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EP2710292A1 - Medical illumination device for operating unit - Google Patents

Medical illumination device for operating unit

Info

Publication number
EP2710292A1
EP2710292A1 EP12725118.9A EP12725118A EP2710292A1 EP 2710292 A1 EP2710292 A1 EP 2710292A1 EP 12725118 A EP12725118 A EP 12725118A EP 2710292 A1 EP2710292 A1 EP 2710292A1
Authority
EP
European Patent Office
Prior art keywords
lighting
hub
lighting module
light
movable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12725118.9A
Other languages
German (de)
French (fr)
Other versions
EP2710292B1 (en
Inventor
Jean-Marie L'hegarat
Olivier Derrien
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Steris SAS
Original Assignee
Steris Surgical Technologies SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Steris Surgical Technologies SAS filed Critical Steris Surgical Technologies SAS
Publication of EP2710292A1 publication Critical patent/EP2710292A1/en
Application granted granted Critical
Publication of EP2710292B1 publication Critical patent/EP2710292B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/06—Controlling the distribution of the light emitted by adjustment of elements by movement of refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/26—Pivoted arms
    • F21V21/28—Pivoted arms adjustable in more than one plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/40—Hand grips
    • F21V21/403—Hand grips for operation or dentist lamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/008—Combination of two or more successive refractors along an optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/20—Lighting for medical use
    • F21W2131/202—Lighting for medical use for dentistry
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/20—Lighting for medical use
    • F21W2131/205—Lighting for medical use for operating theatres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a medical lighting device for operating theater.
  • Such a lighting device conventionally comprises an articulated arm whose one end is fixed and whose opposite mobile end is equipped with a lighting module.
  • the lighting module can be moved by a surgeon, so as to direct the light beam towards an area to be lit by a patient.
  • the requirements in terms of quantity of light, shape and size of the light task generated by the lighting device may vary, in particular as a function of the type of intervention practiced.
  • US 7,465,065 proposes a lighting device comprising several identical or similar hexagonal lighting modules, mechanically assembled and electrically connected to each other by their lateral edges, the modules being pivotable relative to each other.
  • the number of modules and how to assemble them to each other may vary depending on the amount of light needed or the shape of the light task to get.
  • the invention aims in particular to provide a simple, effective and economical solution to these problems.
  • a medical lighting device for operating theater comprising an articulated arm whose one end is fixed and whose opposite mobile end is connected to a hub comprising at least a connection and fixing area of a lighting module, on which is mounted at least one lighting module, each lighting module having a generally helical shape.
  • the hub being chosen so as to have a number of connection areas corresponding to the number of necessary lighting modules.
  • the lighting modules are all fixed and connected to the hub.
  • connection modules from the same articulated arm, identical connection modules, and a similar range of hubs whose only number of connection areas varies, it is possible to produce lighting devices adapted to interventions or to very different needs.
  • Such a lighting device is also simple, inexpensive and reliable.
  • the helical shape of the modules makes it possible to obtain a relatively homogeneous light task even with a reduced number of lighting modules.
  • the helical shape of the lighting modules makes it possible to place light sources, such as LEDs mounted in collimators around or partially around an area to be illuminated (seen from above).
  • the helical shape also makes it possible to place all the light sources on a sphere whose center is the area to be illuminated.
  • the hub comprises a central portion connected to the aforementioned housing mounted on the movable end of the articulated arm, and one or more connection areas radially connected to the central portion.
  • each lighting module comprises a plurality of light sources, for example light-emitting diodes, oriented towards the same area to be illuminated and located at the same distance from this area.
  • light sources for example light-emitting diodes
  • Air can also flow between the different lighting modules.
  • Such a shape is particularly suitable for rooms or operating theaters equipped with laminar flow ceiling type ventilation systems generating a flow of air directed from the ceiling downwards.
  • the lighting device may comprise several identical or similar lighting modules, helically connected at one end to connection areas of the central part of the hub.
  • each lighting module comprises light diffusion means comprising two lenses, movable relative to each other, and each comprising a flat surface and a corrugated surface having recesses and projections, said corrugated surfaces of the lenses being arranged facing one another, so as to converge or diverge the light rays which pass through according to their respective positions, each lens having a generally helical shape or in a circular arc and being mounted on the lower face of the corresponding lighting module, the movable lens being guided by its lateral edges on rails defining a helical or arcuate path.
  • one of the lenses may be fixed, the other may be movable and operated by a handle.
  • the handle is fixed to the central portion of the hub and pivoting about an axis, the rotation of the handle about its axis causing the displacement of the movable lens by means of rods.
  • the same handle can thus be used for manual positioning of the lighting modules vis-à-vis the area to be illuminated, and the adjustment of the surface of the light task.
  • FIG. 1 is an exploded view, in perspective, of a lighting device according to a first embodiment of the invention
  • FIG. 2 is an exploded view, in perspective, of a lighting module equipping the device of FIG. 1;
  • FIG. 3 is an exploded perspective view of a lighting device according to a second embodiment of the invention.
  • FIG. 4 is an exploded view, in perspective, of a lighting module equipping the device of FIG. 3;
  • FIG. 5 and 6 are representations of the corrugated surfaces of the lenses, according to two embodiments
  • FIGS. 1 and 2 A medical lighting device for the operating theater according to a first embodiment is shown in FIGS. 1 and 2.
  • the term "operating theater” also includes the cases in which the lighting device is adapted to a dental chair or to a surgical area. similar activity.
  • This device comprises an articulated arm whose one end is fixed and whose opposite mobile end is connected by a housing 1 to a hub 2.
  • the fixed end is for example fixed to a wall, a ceiling or a distribution arm.
  • the articulated arm is, in a manner known per se, formed of several elements connected to each other by means of articulations making it possible to manually move the free end at any point in the space and to orient this end and thus the hub 2 in all directions.
  • the movable end of the articulated arm is connected to the housing 1 by an angled arm 3, one end of which has a hinge 4 allowing a pivoting about an axis A and connected to the movable end of the articulated arm, the housing 1 being mounted on the other end of the crank arm 3.
  • the casing 1 has an elongate shape and serves to house electrical control means of the lighting device. It has an opposite end to the crank arm 3 and equipped with a hinge 5 for pivoting about an axis B, substantially perpendicular to the axis A.
  • the hub 2 is mounted on the housing 1 via the hinge 5.
  • the hub 2 comprises a central part 6 of elongate shape, connected to the articulation 5, and a zone 7 of electrical connection and fixing of a lighting module, radially connected to the central portion 6.
  • a handle 8 is mounted on a lower face of the central portion 6 and a lighting module 9 is fixed on the zone 7 of connection and attachment.
  • the zone 7 for connection and fixing comprises a recess 10 serving to accommodate electrical control means 1 1 of the lighting module 9, closed by a cover 12.
  • the lighting module 9 comprises a hollow body 13, open downwards, and generally helical or arcuate, in top view. One end of the body 13 has a zone 14 for connection and attachment to the zone 7 of the hub 2, a seal 15 being mounted between the body and the hub.
  • the module 9 is fixed to the hub 2 by means of screws 16, visible in FIG.
  • the curved lateral outer edge of the body 13 has a handle 23 extending over part of its length.
  • Five lighting sub-assemblies 17 each comprise four point light sources, for example light-emitting diodes, each mounted in a support 18 adapted from In a general square form, they are housed and fixed inside the body 13.
  • Each support 18 comprises, for example, four collimators 19 in which the light-emitting diodes are placed.
  • An additional lighting subassembly 20 for ambient illumination is also mounted in the body 13.
  • a helical or arcuate optical element 21 is mounted on the underside of the body 13, a seal 22 being disposed between the optical element 21 and the body 13.
  • the optical element 21 comprises a transparent protective plate 24 or a lens in the form of a helical plate or an arc of a circle.
  • the light-emitting diodes are all oriented towards the same surface to be illuminated.
  • the light-emitting diodes are located on the outer surface of a sphere with a diameter of 1 m, said diodes thus illuminating an area around the center of the sphere.
  • the invention proposes to increase the number of lighting modules 9.
  • FIG. 3 illustrates another embodiment of the invention, in which four identical lighting modules 9 are helically mounted on a hub 2 comprising four connection and fixing zones 7, all radially connected to the central part 6.
  • At least one of the lighting modules 9 is equipped with light diffusion means comprising two lenses 25, 26 (see FIGS. 7 and 8), movable relative to one another, and each comprising a flat surface 27 and a corrugated surface 28 having depressions and projections, said corrugated surfaces 28 of the lenses 25, 26 being arranged facing one another, so as to converge or diverge the light rays that pass through them according to their respective positions.
  • light diffusion means comprising two lenses 25, 26 (see FIGS. 7 and 8), movable relative to one another, and each comprising a flat surface 27 and a corrugated surface 28 having depressions and projections, said corrugated surfaces 28 of the lenses 25, 26 being arranged facing one another, so as to converge or diverge the light rays that pass through them according to their respective positions.
  • One of the lenses is fixed and belongs to the optical element 21, the other 26 being movable and guided by its side edges 29 on slides defining a helical or arcuate path ( Figure 4).
  • the slides are formed by tabs 30 on a peripheral rim of the optical element and having grooves in which the lateral edges 29 of the movable lens 26 slide.
  • the corrugations of the lenses 25, 26 can be directed outwards, without modifying the operation of the invention.
  • each lens 25 or 26 is formed of a transparent circular-arc plate, the alternations of recessed and protruding zones being oriented in two directions, respectively in the circumferential direction and in the radial direction.
  • the pitches and protrusions are identical from one lens to the other, both in the circumferential direction and in the radial direction.
  • the two lenses 25, 26 cancel each other out and the collimated light beam 31 coming from the light-emitting diodes emerges from the second lens which is still substantially collimated (see arrows 32), that is to say in a non-transparent manner. broadcasts.
  • This is represented by the reference lines 33 in FIG.
  • the two lenses 25, 26 are positioned in such a way that the recesses of the fixed lens 25 are arranged facing the recesses of the moving lens 26.
  • each lens 25, 26 is a sinusoidal sheet that can be expressed in spherical coordinates in the following mathematical form:
  • ⁇ is the angle of longitude
  • ⁇ is the angle of latitude
  • R is the radius of curvature (curvature) of the lenses
  • K is the relative amplitude of the sinusoidal layer
  • ⁇ is the period according to the angle ⁇
  • ⁇ is the period according to the angle ⁇
  • ⁇ is the difference of latitude between the longitudinal edges of the corrugated surface
  • the desired corrugated optical surface is obtained, which is then applied to the surfaces 28 facing the lenses 25, 26.
  • the period of the undulations preferably depends on the apparent diameter of the light sources, that is to say the light-emitting diodes. It is indeed preferable that a half-period of undulation (hump or hollow) is entirely contained in the apparent diameter of a light source.
  • the apparent diameter of the light source is much larger than half a period of the undulating surface. This period also influences the amplitude of displacement, between the two lenses 25, 26, necessary for the passage of the diffusion position ( Figure 7) to the non-diffusion position ( Figure 8).
  • the corrugated surface 28 of a lens is shown in FIG. 5, the amplitude of the undulations being substantially constant, regardless of the angle of longitude.
  • an alternative embodiment consists in varying the amplitude of the corrugations as a function of the longitude so that the corrugated surface 28 has a very diffusing zone, making it possible to obtain a large spot with a zone of central shadow, and a less diffusing zone, making it possible to obtain a task of smaller diameter illuminating the shadow zone.
  • a corrugated surface 28 is shown in FIG.
  • this operation consists in replacing the relative amplitude K in the aforementioned formula by a function ⁇ ( ⁇ ) which depends on the longitude ⁇ non-linearly.
  • This embodiment makes it possible, for example, to obtain a light spot with a diameter of 650 mm and a uniform intensity over its entire surface, compared with 500 mm for the embodiment of FIG. 5. For example, it is defined by the diameter of the light spot. , the diameter of the zone whose luminous intensity is greater than 10% of the maximum intensity.
  • the light task could be further enlarged, but this is not useful for the usual medical applications and the corrugation processing would in this case be more complex to achieve.
  • the displacement of the movable lens 26 is obtained by pivoting the handle 8 around its axis C.
  • the upper end of the handle 8 comprises an annular flange 35 whose external periphery is connected to one end of a rod 36 by a pivot axis, the other end of the rod being rotatably coupled to an end 38 of a return member 37 (see also Figure 4).
  • the deflection member 38 has an L shape, comprising two branches substantially perpendicular to one another, and is pivotally mounted at its center 39 on the zone 14 for connecting and fixing the body 13 of the module 9.
  • One of the branches of the deflection member 37 is connected to the link 36, the other branch being connected to the end of a tilting rod 40 passing through a light (not visible) formed in the zone 14 for fastening and connecting the body 13.
  • the rod 40 is pivotally mounted about an axis 41 of the body, one end of the rod 40 being pivotally mounted on the deflection member 37, the other end of the rod 40 being connected to the movable lens 26.
  • the movable lens 26 is displaceable between the two extreme positions shown schematically in FIGS. 7 and 8, these two positions being defined for example by pressing the movable plate 26 on stops.
  • the invention thus proposes a lighting device whose structure is modular, the type of hub 2 used and the number of lighting modules 9 being chosen according to the needs. Regardless of the number of lighting modules 9, the articulated arm, the handle 8 and the lighting modules 9 are identical, only the hub 2 being chosen from among a plurality of similar hubs each comprising from 1 to 4 connection zones. for example.
  • the helical arrangement of the lighting modules 9 allows the air coming from the ventilation systems, for example laminar flow ceiling lamps, to be able to circulate correctly between the lighting modules 9, generally from the ceiling to the ceiling. ground.
  • this lighting device may, if necessary, be equipped with light diffusion means or not allowing an operator such as a surgeon to adjust the diameter of the light task as needed.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Medical illumination device for operating unit. The invention relates to a medical illumination device for an operating unit, comprising an articulated arm one end of which is fixed and a mobile opposite end of which is connected to a hub (2) comprising at least one region (7) of connection and attachment of a lighting module (9), on which region at least one lighting module (9) is mounted. Each lighting module (9) is of helicoid overall shape.

Description

Dispositif d'éclairage médical pour bloc opératoire  Medical lighting device for operating theater
La présente invention concerne un dispositif d'éclairage médical pour bloc opératoire. The present invention relates to a medical lighting device for operating theater.
Un tel dispositif d'éclairage comporte classiquement un bras articulé dont une extrémité est fixe et dont une extrémité opposée mobile est équipée d'un module d'éclairage.  Such a lighting device conventionally comprises an articulated arm whose one end is fixed and whose opposite mobile end is equipped with a lighting module.
Le module d'éclairage peut être déplacé par un chirurgien, de manière à orienter le faisceau lumineux vers une zone à éclairer d'un patient.  The lighting module can be moved by a surgeon, so as to direct the light beam towards an area to be lit by a patient.
Les besoins en quantité de lumière, en forme et en taille de la tâche lumineuse générée par le dispositif d'éclairage peuvent varier, notamment en fonction du type d'intervention pratiquée.  The requirements in terms of quantity of light, shape and size of the light task generated by the lighting device may vary, in particular as a function of the type of intervention practiced.
Le document US 7 465 065 propose un dispositif d'éclairage comportant plusieurs modules d'éclairage hexagonaux identiques ou similaires, assemblés mécaniquement et connectés électriquement les uns aux autres par leurs bords latéraux, les modules pouvant pivoter les uns par rapport aux autres. Le nombre de modules ainsi que la manière de les assembler les uns aux autres peuvent varier en fonction de la quantité de lumière nécessaire ou encore de la forme de la tâche lumineuse à obtenir.  US 7,465,065 proposes a lighting device comprising several identical or similar hexagonal lighting modules, mechanically assembled and electrically connected to each other by their lateral edges, the modules being pivotable relative to each other. The number of modules and how to assemble them to each other may vary depending on the amount of light needed or the shape of the light task to get.
Un tel montage est relativement complexe et ne permet pas d'adapter la forme de chaque module d'éclairage puisque cette forme est imposée par le montage en « nid d'abeilles ».  Such an assembly is relatively complex and does not allow to adapt the shape of each lighting module since this shape is imposed by the assembly in "honeycomb".
En outre, dans les salles ou blocs opératoires équipés de systèmes de ventilation de type plafonniers à flux laminaire, le flux d'air orienté du plafond vers le bas, est stoppé par le dispositif d'éclairage.  In addition, in rooms or operating theaters equipped with laminar flow ceiling type ventilation systems, the airflow directed from the ceiling downwards is stopped by the lighting device.
L'invention a notamment pour but d'apporter une solution simple, efficace et économique à ces problèmes.  The invention aims in particular to provide a simple, effective and economical solution to these problems.
A cet effet, elle propose un dispositif d'éclairage médical pour bloc opératoire, comportant un bras articulé dont une extrémité est fixe et dont une extrémité opposée mobile est reliée à un moyeu comportant au moins une zone de raccordement et de fixation d'un module d'éclairage, sur laquelle est monté au moins un module d'éclairage, chaque module d'éclairage ayant une forme générale hélicoïdale. For this purpose, it proposes a medical lighting device for operating theater, comprising an articulated arm whose one end is fixed and whose opposite mobile end is connected to a hub comprising at least a connection and fixing area of a lighting module, on which is mounted at least one lighting module, each lighting module having a generally helical shape.
De cette manière, il est possible de faire varier le nombre de modules d'éclairage en fonction des besoins, le moyeu étant choisi de façon à avoir un nombre de zones de raccordement correspondant au nombre de modules d'éclairage nécessaires. Les modules d'éclairage sont tous fixés et raccordés au moyeu.  In this way, it is possible to vary the number of lighting modules according to the needs, the hub being chosen so as to have a number of connection areas corresponding to the number of necessary lighting modules. The lighting modules are all fixed and connected to the hub.
Ainsi, à partir d'un même bras articulé, de modules de raccordement identiques, et d'une gamme de moyeux similaires dont seul le nombre de zones de raccordement varie, il est possible de réaliser des dispositifs d'éclairage adaptés à des interventions ou à des besoins très différents.  Thus, from the same articulated arm, identical connection modules, and a similar range of hubs whose only number of connection areas varies, it is possible to produce lighting devices adapted to interventions or to very different needs.
Un tel dispositif d'éclairage est en outre simple, peu coûteux et fiable.  Such a lighting device is also simple, inexpensive and reliable.
Enfin, la forme hélicoïdale des modules permet d'obtenir une tâche lumineuse relativement homogène même avec un nombre réduit de modules d'éclairage. La forme hélicoïdale des modules d'éclairage permet en effet de placer des sources lumineuses, telles que des LEDs montés dans des collimateurs autour ou partiellement autour d'une zone à éclairer (en vue de dessus). La forme hélicoïdale permet en outre de placer toutes les sources lumineuses sur une sphère dont le centre est la zone à éclairer.  Finally, the helical shape of the modules makes it possible to obtain a relatively homogeneous light task even with a reduced number of lighting modules. The helical shape of the lighting modules makes it possible to place light sources, such as LEDs mounted in collimators around or partially around an area to be illuminated (seen from above). The helical shape also makes it possible to place all the light sources on a sphere whose center is the area to be illuminated.
Selon une caractéristique de l'invention, le moyeu comporte une partie centrale reliée au boîtier précité monté sur l'extrémité mobile du bras articulé, et une ou des zones de raccordement reliées radialement à la partie centrale.  According to a feature of the invention, the hub comprises a central portion connected to the aforementioned housing mounted on the movable end of the articulated arm, and one or more connection areas radially connected to the central portion.
De manière avantageuse, chaque module d'éclairage comporte une pluralité de sources lumineuses, par exemple à diodes électroluminescentes, orientées vers une même zone à éclairer et situées à même distance de cette zone.  Advantageously, each lighting module comprises a plurality of light sources, for example light-emitting diodes, oriented towards the same area to be illuminated and located at the same distance from this area.
Ceci permet d'obtenir une tâche lumineuse homogène. De l'air peut également circuler entre les différents modules d'éclairage. Une telle forme est particulièrement adaptée aux salles ou blocs opératoires équipés de systèmes de ventilation de types plafonniers à flux laminaire générant un flux d'air orienté du plafond vers le bas. This makes it possible to obtain a homogeneous luminous task. Air can also flow between the different lighting modules. Such a shape is particularly suitable for rooms or operating theaters equipped with laminar flow ceiling type ventilation systems generating a flow of air directed from the ceiling downwards.
Le dispositif d'éclairage peut comprendre plusieurs modules d'éclairage identiques ou similaires, reliés en hélice par une extrémité à des zones de raccordement de la partie centrale du moyeu.  The lighting device may comprise several identical or similar lighting modules, helically connected at one end to connection areas of the central part of the hub.
Selon une forme de réalisation de l'invention, chaque module d'éclairage comporte des moyens de diffusion de la lumière comprenant deux lentilles, mobiles l'une par rapport à l'autre, et comportant chacune une surface plane et une surface ondulée présentant des creux et des saillies, lesdites surfaces ondulées des lentilles étant agencées en regard l'une de l'autre, de façon à faire converger ou diverger les rayons lumineux qui les traversent en fonction de leurs positions respectives, chaque lentille présentant une forme générale hélicoïdale ou en arc de cercle et étant montée en face inférieure du module d'éclairage correspondant, la lentille mobile étant guidée par ses bords latéraux sur des glissières définissant une trajectoire hélicoïdale ou en arc de cercle.  According to one embodiment of the invention, each lighting module comprises light diffusion means comprising two lenses, movable relative to each other, and each comprising a flat surface and a corrugated surface having recesses and projections, said corrugated surfaces of the lenses being arranged facing one another, so as to converge or diverge the light rays which pass through according to their respective positions, each lens having a generally helical shape or in a circular arc and being mounted on the lower face of the corresponding lighting module, the movable lens being guided by its lateral edges on rails defining a helical or arcuate path.
Il est ainsi possible d'augmenter ou de diminuer la dimension de la tâche lumineuse, par déplacement d'une lentille par rapport à l'autre.  It is thus possible to increase or decrease the size of the light spot by moving one lens relative to the other.
En particulier, l'une des lentilles peut être fixe, l'autre pouvant être mobile et actionnée par une poignée.  In particular, one of the lenses may be fixed, the other may be movable and operated by a handle.
Selon une autre caractéristique de l'invention, la poignée est fixée à la partie centrale du moyeu et pivotante autour d'un axe, la rotation de la poignée autour de son axe entraînant le déplacement de la lentille mobile par l'intermédiaire de biellettes.  According to another characteristic of the invention, the handle is fixed to the central portion of the hub and pivoting about an axis, the rotation of the handle about its axis causing the displacement of the movable lens by means of rods.
La même poignée peut ainsi servir au positionnement manuel des modules d'éclairage vis-à-vis de la zone à éclairer, et à l'ajustement de la surface de la tâche lumineuse.  The same handle can thus be used for manual positioning of the lighting modules vis-à-vis the area to be illuminated, and the adjustment of the surface of the light task.
L'invention sera mieux comprise et d'autres détails, caractéristiques et avantages de l'invention apparaîtront à la lecture de la description suivante faite à titre d'exemple non limitatif en référence aux dessins annexés dans lesquels : The invention will be better understood and other details, features and advantages of the invention will become apparent on reading the following description given by way of non-limiting example with reference to the accompanying drawings in which:
- la figure 1 est une vue éclatée, en perspective, d'un dispositif d'éclairage selon une première forme de réalisation de l'invention ;  - Figure 1 is an exploded view, in perspective, of a lighting device according to a first embodiment of the invention;
- la figure 2 est une vue éclatée, en perspective, d'un module d'éclairage équipant le dispositif de la figure 1 ;  FIG. 2 is an exploded view, in perspective, of a lighting module equipping the device of FIG. 1;
- la figure 3 est une vue éclatée, en perspective, d'un dispositif d'éclairage selon une deuxième forme de réalisation de l'invention ;  FIG. 3 is an exploded perspective view of a lighting device according to a second embodiment of the invention;
- la figure 4 est une vue éclatée, en perspective, d'un module d'éclairage équipant le dispositif de la figure 3 ;  FIG. 4 is an exploded view, in perspective, of a lighting module equipping the device of FIG. 3;
- les figures 5 et 6 sont des représentations des surfaces ondulées des lentilles, selon deux variantes de réalisation ; - Figures 5 and 6 are representations of the corrugated surfaces of the lenses, according to two embodiments;
- les figures 7 et 8 illustrent le principe de diffusion de la tâche lumineuse, pour deux positions différentes de la lentille mobile vis-à-vis de la lentille fixe. - Figures 7 and 8 illustrate the principle of diffusion of the light task, for two different positions of the moving lens vis-à-vis the fixed lens.
Un dispositif d'éclairage médical pour bloc opératoire selon une première forme de réalisation est représenté aux figures 1 et 2. Le terme "bloc opératoire" inclut également les cas où le dispositif d'éclairage est adapté à un fauteuil dentaire ou à un domaine d'activité similaire. Ce dispositif comporte un bras articulé dont une extrémité est fixe et dont une extrémité opposée mobile est reliée par un boîtier 1 à un moyeu 2.  A medical lighting device for the operating theater according to a first embodiment is shown in FIGS. 1 and 2. The term "operating theater" also includes the cases in which the lighting device is adapted to a dental chair or to a surgical area. similar activity. This device comprises an articulated arm whose one end is fixed and whose opposite mobile end is connected by a housing 1 to a hub 2.
L'extrémité fixe est par exemple fixée à un mur, à un plafond ou encore à un bras de distribution. Le bras articulé est, de manière connue en soi, formé de plusieurs éléments reliés les uns aux autres par des articulations permettant de déplacer manuellement l'extrémité libre en tout point de l'espace et d'orienter cette extrémité et donc le moyeu 2 dans toutes les directions.  The fixed end is for example fixed to a wall, a ceiling or a distribution arm. The articulated arm is, in a manner known per se, formed of several elements connected to each other by means of articulations making it possible to manually move the free end at any point in the space and to orient this end and thus the hub 2 in all directions.
L'extrémité mobile du bras articulé est reliée au boîtier 1 par un bras coudé 3 dont une extrémité comporte une articulation 4 permettant un pivotement autour d'un axe A et raccordée à l'extrémité mobile du bras articulé, le boîtier 1 étant monté sur l'autre extrémité du bras coudé 3. The movable end of the articulated arm is connected to the housing 1 by an angled arm 3, one end of which has a hinge 4 allowing a pivoting about an axis A and connected to the movable end of the articulated arm, the housing 1 being mounted on the other end of the crank arm 3.
Le boîtier 1 présente une forme allongée et sert au logement de moyens de commande électrique du dispositif d'éclairage. Il comporte une extrémité opposée au bras coudé 3 et équipée d'une articulation 5 permettant le pivotement autour d'un axe B, sensiblement perpendiculaire à l'axe A.  The casing 1 has an elongate shape and serves to house electrical control means of the lighting device. It has an opposite end to the crank arm 3 and equipped with a hinge 5 for pivoting about an axis B, substantially perpendicular to the axis A.
Le moyeu 2 est monté sur le boîtier 1 par l'intermédiaire de l'articulation 5.  The hub 2 is mounted on the housing 1 via the hinge 5.
Le moyeu 2 comporte une partie centrale 6 de forme allongée, reliée à l'articulation 5, et une zone 7 de raccordement électrique et de fixation d'un module d'éclairage, reliée radialement à la partie centrale 6.  The hub 2 comprises a central part 6 of elongate shape, connected to the articulation 5, and a zone 7 of electrical connection and fixing of a lighting module, radially connected to the central portion 6.
Une poignée 8 est montée sur une face inférieure de la partie centrale 6 et un module d'éclairage 9 est fixé sur la zone 7 de raccordement et de fixation.  A handle 8 is mounted on a lower face of the central portion 6 and a lighting module 9 is fixed on the zone 7 of connection and attachment.
La zone 7 de raccordement et de fixation comporte un évidement 10 servant au logement de moyens électriques de commande 1 1 du module d'éclairage 9, refermé par un capot 12.  The zone 7 for connection and fixing comprises a recess 10 serving to accommodate electrical control means 1 1 of the lighting module 9, closed by a cover 12.
La structure du module d'éclairage 9 va maintenant être décrite en référence à la figure 2.  The structure of the lighting module 9 will now be described with reference to FIG.
Le module d'éclairage 9 comporte un corps creux 13, ouvert vers le bas, et de forme générale hélicoïdale ou en arc de cercle, en vue de dessus. L'une des extrémités du corps 13 comporte une zone 14 de raccordement et de fixation à la zone 7 du moyeu 2, un joint 15 étant monté entre le corps et le moyeu . Le module 9 est fixé au moyeu 2 à l'aide de vis 16, visibles à la figure 1 .  The lighting module 9 comprises a hollow body 13, open downwards, and generally helical or arcuate, in top view. One end of the body 13 has a zone 14 for connection and attachment to the zone 7 of the hub 2, a seal 15 being mounted between the body and the hub. The module 9 is fixed to the hub 2 by means of screws 16, visible in FIG.
Le bord externe latéral courbe du corps 13 comporte une poignée 23 s'étendant sur une partie de sa longueur.  The curved lateral outer edge of the body 13 has a handle 23 extending over part of its length.
Cinq sous-ensembles d'éclairage 17, comprennent chacun quatre sources d'éclairage ponctuelles, par exemple des diodes électroluminescentes, montées chacune dans un support 18 adapté de forme générale carrée, sont logés et fixés à l'intérieur du corps 13. Chaque support 18 comporte par exemple quatre collimateurs 19 dans lesquels sont placées les diodes électroluminescentes. Five lighting sub-assemblies 17 each comprise four point light sources, for example light-emitting diodes, each mounted in a support 18 adapted from In a general square form, they are housed and fixed inside the body 13. Each support 18 comprises, for example, four collimators 19 in which the light-emitting diodes are placed.
Un sous-ensemble d'éclairage supplémentaire 20, servant à l'éclairage dit d'ambiance, est également monté dans le corps 13.  An additional lighting subassembly 20 for ambient illumination is also mounted in the body 13.
Un élément optique 21 hélicoïdal ou en arc de cercle est monté sur la face inférieure du corps 13, un joint 22 étant disposé entre l'élément optique 21 et le corps 13.  A helical or arcuate optical element 21 is mounted on the underside of the body 13, a seal 22 being disposed between the optical element 21 and the body 13.
L'élément optique 21 comporte une plaque transparente de protection 24 ou une lentille en forme de plaque hélicoïdale ou en arc de cercle.  The optical element 21 comprises a transparent protective plate 24 or a lens in the form of a helical plate or an arc of a circle.
Les diodes électroluminescentes sont toutes orientées vers une même surface à éclairer. En particulier, les diodes électroluminescentes sont situées sur la surface externe d'une sphère d'un diamètre de 1 m, lesdites diodes éclairant ainsi une zone autour du centre de la sphère.  The light-emitting diodes are all oriented towards the same surface to be illuminated. In particular, the light-emitting diodes are located on the outer surface of a sphere with a diameter of 1 m, said diodes thus illuminating an area around the center of the sphere.
Lorsque les besoins en lumière sont plus importants, l'invention propose d'augmenter le nombre de modules d'éclairage 9.  When the light requirements are greater, the invention proposes to increase the number of lighting modules 9.
La figure 3 illustre une autre forme de réalisation de l'invention, dans laquelle quatre modules d'éclairage 9 identiques sont montés en hélice sur un moyeu 2 comportant quatre zones 7 de raccordement et de fixation, toutes reliées radialement à la partie centrale 6.  FIG. 3 illustrates another embodiment of the invention, in which four identical lighting modules 9 are helically mounted on a hub 2 comprising four connection and fixing zones 7, all radially connected to the central part 6.
Dans cette forme de réalisation, au moins l'un des modules d'éclairage 9 est équipé de moyens de diffusion de la lumière comprenant deux lentilles 25, 26 (voir figures 7 et 8), mobiles l'une par rapport, et comportant chacune une surface plane 27 et une surface ondulée 28 présentant des creux et des saillies, lesdites surfaces ondulées 28 des lentilles 25, 26 étant agencées en regard l'une de l'autre, de façon à faire converger ou diverger les rayons lumineux qui les traversent en fonction de leurs positions respectives.  In this embodiment, at least one of the lighting modules 9 is equipped with light diffusion means comprising two lenses 25, 26 (see FIGS. 7 and 8), movable relative to one another, and each comprising a flat surface 27 and a corrugated surface 28 having depressions and projections, said corrugated surfaces 28 of the lenses 25, 26 being arranged facing one another, so as to converge or diverge the light rays that pass through them according to their respective positions.
L'une 25 des lentilles est fixe et appartient à l'élément optique 21 , l'autre 26 étant mobile et guidée par ses bords latéraux 29 sur des glissières définissant une trajectoire hélicoïdale ou en arc de cercle (figure 4). Les glissières sont formées par des languettes 30 situées sur un rebord périphérique de l'élément optique et présentant des rainures dans lesquelles coulissent les bords latéraux 29 de la lentille mobile 26. Les ondulations des lentilles 25, 26 peuvent être dirigées vers l'extérieur, sans modifier le fonctionnement de l'invention. One of the lenses is fixed and belongs to the optical element 21, the other 26 being movable and guided by its side edges 29 on slides defining a helical or arcuate path (Figure 4). The slides are formed by tabs 30 on a peripheral rim of the optical element and having grooves in which the lateral edges 29 of the movable lens 26 slide. The corrugations of the lenses 25, 26 can be directed outwards, without modifying the operation of the invention.
Comme représenté schématiquement à la figure 5, chaque lentille 25 ou 26 est formée d'une plaque transparente en arc de cercle, les alternances de zones en creux et en saillie étant orientées dans deux directions, respectivement en direction circonférentielle et en direction radiale.  As shown diagrammatically in FIG. 5, each lens 25 or 26 is formed of a transparent circular-arc plate, the alternations of recessed and protruding zones being oriented in two directions, respectively in the circumferential direction and in the radial direction.
Le principe général des moyens de diffusion à l'aide de deux plaques mobiles l'une par rapport à l'autre est connu du document US 5 775 799. L'invention permet d'adapter ce principe général au cas des modules d'éclairage précité.  The general principle of the diffusion means using two movable plates relative to each other is known from US 5,775,799. The invention makes it possible to adapt this general principle to the case of lighting modules. supra.
Ce principe va maintenant être décrit en référence aux figures 7 et 8 représentent schématiquement les deux lentilles 25, 26, dans deux positions différentes de la lentille mobile 26. La figure 6 sera commentée ultérieurement.  This principle will now be described with reference to Figures 7 and 8 show schematically the two lenses 25, 26, in two different positions of the movable lens 26. Figure 6 will be discussed later.
En position de non diffusion, représentée à la figure 7, les lentilles In non-diffusion position, represented in FIG. 7, the lenses
25, 26 sont positionnées de telle manière que les creux de la lentille fixe 25 soient disposés en regard des saillies de la lentille mobile 26 et inversement. Les pas des creux et des saillies sont identiques d'une lentille à l'autre, aussi bien en direction circonférentielle qu'en direction radiale. 25, 26 are positioned such that the recesses of the fixed lens 25 are arranged facing the projections of the movable lens 26 and vice versa. The pitches and protrusions are identical from one lens to the other, both in the circumferential direction and in the radial direction.
Dans cette position, les effets des deux lentilles 25, 26 s'annulent et le faisceau de lumière collimaté 31 provenant des diodes électroluminescentes émerge de la deuxième lentille encore sensiblement collimaté (voir flèches 32), c'est-à-dire de manière non diffuse. Ceci est représenté par les lignes de référence 33 sur la figure 7. Pour la diffusion de la lumière, les deux lentilles 25, 26 sont positionnées de telle manière que les creux de la lentille fixe 25 sont disposés en regard des creux de la lentille mobile 26. In this position, the effects of the two lenses 25, 26 cancel each other out and the collimated light beam 31 coming from the light-emitting diodes emerges from the second lens which is still substantially collimated (see arrows 32), that is to say in a non-transparent manner. broadcasts. This is represented by the reference lines 33 in FIG. For the light diffusion, the two lenses 25, 26 are positioned in such a way that the recesses of the fixed lens 25 are arranged facing the recesses of the moving lens 26.
Dans cette position, les effets de divergence des deux lentilles 25, 26 se cumulent et le faisceau de lumière émerge de la deuxième lentille 26 de façon très diffuse. Ceci est représenté schématiquement par les lignes de référence 34 sur la figure 8.  In this position, the divergence effects of the two lenses 25, 26 are cumulative and the light beam emerges from the second lens 26 in a very diffuse manner. This is schematically represented by reference lines 34 in FIG.
Des positions intermédiaires de la lentille mobile 26 vis-à-vis de la lentille fixe 25 permettent d'obtenir une diffusion plus moins ou moins importante du flux de lumière, et donc une tâche lumineuse plus ou moins grande.  Intermediate positions of the movable lens 26 with respect to the fixed lens 25 make it possible to obtain a less or less significant diffusion of the light flux, and therefore a more or less large luminous task.
La surface ondulée 28 de la chaque lentille 25, 26 est une nappe sinusoïdale qui peut être exprimée en coordonnées sphériques sous la forme mathématique suivante :  The corrugated surface 28 of each lens 25, 26 is a sinusoidal sheet that can be expressed in spherical coordinates in the following mathematical form:
* 0) dans laquelle : * 0) in which :
Θ est l'angle de longitude,  Θ is the angle of longitude,
φ est l'angle de latitude,  φ is the angle of latitude,
R est le rayon de courbure (galbe) des lentilles,  R is the radius of curvature (curvature) of the lenses,
K est l'amplitude relative de la nappe sinusoïdale,  K is the relative amplitude of the sinusoidal layer,
ΡΘ est la période selon l'angle Θ,  ΡΘ is the period according to the angle Θ,
Ρφ est la période selon l'angle φ,  Ρφ is the period according to the angle φ,
ϋφ est la différence de latitude entre les bords longitudinaux de la surface ondulée,  ϋφ is the difference of latitude between the longitudinal edges of the corrugated surface,
(pmin est l'angle de latitude minimal.  (pmin is the minimum latitude angle.
En ajustant la formule mathématique du paragraphe précédent aux paramètres dimensionnels du module d'éclairage, on obtient la surface optique ondulée recherchée, qui est ensuite appliquée sur les surfaces 28 en regard des lentilles 25, 26. La période des ondulations dépend préférentiellement du diamètre apparent des sources lumineuses, c'est-à-dire des diodes électroluminescentes. Il est en effet préférable qu'une demi-période d'ondulation (bosse ou creux) soit entièrement contenue dans le diamètre apparent d'une source lumineuse. By adjusting the mathematical formula of the preceding paragraph to the dimensional parameters of the lighting module, the desired corrugated optical surface is obtained, which is then applied to the surfaces 28 facing the lenses 25, 26. The period of the undulations preferably depends on the apparent diameter of the light sources, that is to say the light-emitting diodes. It is indeed preferable that a half-period of undulation (hump or hollow) is entirely contained in the apparent diameter of a light source.
Préférentiellement, le diamètre apparent de la source lumineuse est beaucoup plus grand qu'une demi-période de la surface ondulée. Cette période influe également sur l'amplitude de déplacement, entre les deux lentilles 25, 26, nécessaire pour le passage de la position de diffusion (figure 7) à la position de non-diffusion (figure 8).  Preferably, the apparent diameter of the light source is much larger than half a period of the undulating surface. This period also influences the amplitude of displacement, between the two lenses 25, 26, necessary for the passage of the diffusion position (Figure 7) to the non-diffusion position (Figure 8).
La surface ondulée 28 d'une lentille est représentée à la figure 5, l'amplitude des ondulations étant sensiblement constante, quel que soit l'angle de longitude.  The corrugated surface 28 of a lens is shown in FIG. 5, the amplitude of the undulations being substantially constant, regardless of the angle of longitude.
Afin d'augmenter le diamètre de la tâche de lumière, il est notamment possible d'augmenter l'amplitude des ondulations de la lentille illustrée à la figure 5. Si l'on cherche à obtenir une trop grande tâche de lumière, c'est-à-dire une trop grande diffusion du flux lumineux émis par les diodes électroluminescentes, on observe que la tâche comporte en son centre une zone dont l'intensité lumineuse est plus faible, appelée zone « d'ombre ».  In order to increase the diameter of the light spot, it is possible in particular to increase the amplitude of the corrugations of the lens illustrated in FIG. 5. If one seeks to obtain a too large task of light, it is that is to say, a too wide diffusion of the luminous flux emitted by the light-emitting diodes, it is observed that the task comprises in its center an area whose luminous intensity is lower, called zone of "shadow".
Afin d'éviter un tel phénomène, une variante de réalisation consiste à faire varier l'amplitude des ondulations en fonction de la longitude de sorte que la surface ondulée 28 présente une zone très diffusante, permettant d'obtenir une tâche large avec une zone d'ombre centrale, et une zone moins diffusante, permettant d'obtenir une tâche de diamètre plus faible éclairant la zone d'ombre. Une telle surface ondulée 28 est représentée à la figure 6.  In order to avoid such a phenomenon, an alternative embodiment consists in varying the amplitude of the corrugations as a function of the longitude so that the corrugated surface 28 has a very diffusing zone, making it possible to obtain a large spot with a zone of central shadow, and a less diffusing zone, making it possible to obtain a task of smaller diameter illuminating the shadow zone. Such a corrugated surface 28 is shown in FIG.
D'un point de vue mathématique, cette opération consiste à remplacer l'amplitude relative K dans la formule précitée par une fonction Κ(θ) qui dépend de la longitude Θ de manière non linéaire. Cette forme de réalisation permet par exemple d'obtenir une tâche lumineuse de diamètre 650 mm et d'intensité homogène sur toute sa surface, contre 500 mm pour la forme de réalisation de la figure 5. On définit par exemple par diamètre de la tâche lumineuse, le diamètre de la zone dont l'intensité lumineuse est supérieure à 10% de l'intensité maximale. From a mathematical point of view, this operation consists in replacing the relative amplitude K in the aforementioned formula by a function Κ (θ) which depends on the longitude Θ non-linearly. This embodiment makes it possible, for example, to obtain a light spot with a diameter of 650 mm and a uniform intensity over its entire surface, compared with 500 mm for the embodiment of FIG. 5. For example, it is defined by the diameter of the light spot. , the diameter of the zone whose luminous intensity is greater than 10% of the maximum intensity.
On pourrait élargir encore davantage la tâche lumineuse, mais cela n'est pas utile pour les applications médicales usuelles et l'usinage des ondulations serait dans ce cas plus complexe à réaliser.  The light task could be further enlarged, but this is not useful for the usual medical applications and the corrugation processing would in this case be more complex to achieve.
Le déplacement de la lentille mobile 26 est obtenu par pivotement de la poignée 8 autour de son axe C. Comme cela est visible à la figure 3, l'extrémité supérieure de la poignée 8 comporte une collerette annulaire 35 dont la périphérie externe est reliée à une extrémité d'une biellette 36 par un axe de pivotement, l'autre extrémité de la biellette étant couplée en rotation à une extrémité 38 d'un organe de renvoi 37 (voir également figure 4). L'organe de renvoi 38 présente une forme en L, comportant deux branches sensiblement perpendiculaires l'une par rapport à l'autre, et est monté à pivotement en son centre 39 sur la zone 14 de raccordement et de fixation du corps 13 du module d'éclairage 9. L'une des branches de l'organe de renvoi 37 est reliée à la biellette 36, l'autre branche étant reliée à l'extrémité d'une tige basculante 40 traversant une lumière (non visible) ménagée dans la zone 14 de fixation et de raccordement du corps 13.  The displacement of the movable lens 26 is obtained by pivoting the handle 8 around its axis C. As can be seen in FIG. 3, the upper end of the handle 8 comprises an annular flange 35 whose external periphery is connected to one end of a rod 36 by a pivot axis, the other end of the rod being rotatably coupled to an end 38 of a return member 37 (see also Figure 4). The deflection member 38 has an L shape, comprising two branches substantially perpendicular to one another, and is pivotally mounted at its center 39 on the zone 14 for connecting and fixing the body 13 of the module 9. One of the branches of the deflection member 37 is connected to the link 36, the other branch being connected to the end of a tilting rod 40 passing through a light (not visible) formed in the zone 14 for fastening and connecting the body 13.
La tige 40 est montée pivotante autour d'un axe 41 du corps, une extrémité de la tige 40 étant montée pivotante sur l'organe de renvoi 37, l'autre extrémité de la tige 40 étant reliée à la lentille mobile 26.  The rod 40 is pivotally mounted about an axis 41 of the body, one end of the rod 40 being pivotally mounted on the deflection member 37, the other end of the rod 40 being connected to the movable lens 26.
Ainsi, la rotation de la poignée 8 autour de son axe C entraîne le déplacement de la biellette 36 et donc la rotation de l'organe de renvoi 37, ce qui provoque la rotation de la tige 40 et le déplacement de la lentille mobile 26 le long de sa trajectoire en arc de cercle.  Thus, the rotation of the handle 8 about its axis C causes the movement of the rod 36 and therefore the rotation of the deflection member 37, which causes the rotation of the rod 40 and the displacement of the movable lens 26. along its trajectory in an arc.
La lentille mobile 26 est déplaçable entre les deux positions extrêmes représentées schématiquement aux figures 7 et 8, ces deux positions étant définies par exemple par appui de la plaque mobile 26 sur des butées. The movable lens 26 is displaceable between the two extreme positions shown schematically in FIGS. 7 and 8, these two positions being defined for example by pressing the movable plate 26 on stops.
L'invention propose ainsi un dispositif d'éclairage dont la structure est modulaire, le type de moyeu 2 utilisé et le nombre de modules d'éclairage 9 étant choisis en fonction des besoins. Quel que soit le nombre de modules d'éclairage 9, le bras articulé, la poignée 8 et les modules d'éclairage 9 sont identiques, seul le moyeu 2 étant choisi parmi une pluralité de moyeux similaires comprenant chacun de 1 à 4 zones de raccordement par exemple.  The invention thus proposes a lighting device whose structure is modular, the type of hub 2 used and the number of lighting modules 9 being chosen according to the needs. Regardless of the number of lighting modules 9, the articulated arm, the handle 8 and the lighting modules 9 are identical, only the hub 2 being chosen from among a plurality of similar hubs each comprising from 1 to 4 connection zones. for example.
En outre, l'agencement en hélice des modules d'éclairage 9 permet à l'air issu des systèmes de ventilation, par exemple des plafonniers à flux laminaire, de pouvoir circuler correctement entre les modules d'éclairage 9, généralement du plafond vers le sol.  In addition, the helical arrangement of the lighting modules 9 allows the air coming from the ventilation systems, for example laminar flow ceiling lamps, to be able to circulate correctly between the lighting modules 9, generally from the ceiling to the ceiling. ground.
Comme indiqué précédemment, ce dispositif d'éclairage peut, si nécessaire, être équipé ou non de moyens de diffusion de la lumière permettant à un opérateur tel qu'un chirurgien d'ajuster le diamètre de la tâche lumineuse en fonction des besoins.  As indicated above, this lighting device may, if necessary, be equipped with light diffusion means or not allowing an operator such as a surgeon to adjust the diameter of the light task as needed.

Claims

REVENDICATIONS
1 . Dispositif d'éclairage médical pour bloc opératoire, comportant un bras articulé dont une extrémité est fixe et dont une extrémité opposée mobile est reliée à un moyeu (2) comportant au moins une zone (7) de raccordement et de fixation d'un module d'éclairage (9), sur laquelle est monté au moins un module d'éclairage (9), caractérisé en ce que chaque module d'éclairage (9) a une forme générale hélicoïdale. 1. Medical lighting device for operating theater, comprising an articulated arm whose one end is fixed and whose opposite movable end is connected to a hub (2) comprising at least one zone (7) for connecting and fixing a module lighting (9), on which at least one lighting module (9) is mounted, characterized in that each lighting module (9) has a generally helical shape.
2. Dispositif selon la revendication 1 , caractérisé en ce que le moyeu (2) comporte une partie centrale (6) reliée au boîtier (1 ) précité monté sur l'extrémité mobile du bras articulé, et une ou des zones (7) de raccordement reliées radialement à la partie centrale (6).  2. Device according to claim 1, characterized in that the hub (2) comprises a central portion (6) connected to the housing (1) above mounted on the movable end of the articulated arm, and one or more zones (7) of connection radially connected to the central part (6).
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que chaque module d'éclairage (9) comporte une pluralité de sources lumineuses, par exemple à diodes électroluminescentes, orientées vers une même zone à éclairer.  3. Device according to claim 1 or 2, characterized in that each lighting module (9) comprises a plurality of light sources, for example light-emitting diodes, oriented towards the same area to be illuminated.
4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce qu'il comprend plusieurs modules d'éclairage (9) identiques ou similaires, reliés en hélice par une extrémité à des zones de raccordement (7) de la partie centrale (6) du moyeu (2).  4. Device according to one of claims 1 to 3, characterized in that it comprises several lighting modules (9) identical or similar, helically connected at one end to the connecting regions (7) of the central portion. (6) of the hub (2).
5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que chaque module d'éclairage (9) comporte des moyens de diffusion de la lumière comprenant deux lentilles (25, 26), mobiles l'une par rapport à l'autre, et comportant chacune une surface plane (27) et une surface ondulée (28) présentant des creux et des saillies, lesdites surfaces ondulées (28) des lentilles (25, 26) étant agencées en regard l'une de l'autre, de façon à faire converger ou diverger les rayons lumineux (31 , 32) qui les traversent en fonction de leurs positions respectives, chaque lentille (25, 26) présentant une forme générale hélicoïdale ou en arc de cercle et étant montée en face inférieure du module d'éclairage (9) correspondant, la lentille mobile (26) étant guidée par ses bords latéraux sur des glissières (30) définissant une trajectoire hélicoïdale ou en arc de cercle. 5. Device according to one of claims 1 to 4, characterized in that each lighting module (9) comprises light diffusion means comprising two lenses (25, 26), movable relative to one another. other, and each having a planar surface (27) and a corrugated surface (28) having depressions and projections, said corrugated surfaces (28) of the lenses (25, 26) being arranged facing each other , so as to converge or diverge the light rays (31, 32) which pass through according to their respective positions, each lens (25, 26) having a generally helical or arcuate shape and being mounted on the underside of the corresponding lighting module (9), the movable lens (26) being guided by its lateral edges on slides (30) defining a helical path or arcuate.
6. Dispositif selon la revendication 5, caractérisé en ce que l'une (25) des lentilles est fixe, l'autre étant mobile (26) et actionnée par une poignée (8).  6. Device according to claim 5, characterized in that one (25) of the lenses is fixed, the other being movable (26) and actuated by a handle (8).
7. Dispositif selon la revendication 6, caractérisé en ce que la poignée (8) est fixée à la partie centrale (6) du moyeu (2) et pivotante autour d'un axe (C), la rotation de la poignée (8) autour de son axe (C) entraînant le déplacement de la lentille mobile (26) par l'intermédiaire de biellettes (36, 37, 40).  7. Device according to claim 6, characterized in that the handle (8) is fixed to the central portion (6) of the hub (2) and pivotable about an axis (C), the rotation of the handle (8) around its axis (C) causing the movable lens (26) to move by means of links (36, 37, 40).
EP12725118.9A 2011-05-16 2012-05-09 Medical illumination device for operating unit Active EP2710292B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1154231A FR2975460B1 (en) 2011-05-16 2011-05-16 MEDICAL LIGHTING DEVICE FOR OPERATIVE BLOCK
PCT/FR2012/051017 WO2012156617A1 (en) 2011-05-16 2012-05-09 Medical illumination device for operating unit

Publications (2)

Publication Number Publication Date
EP2710292A1 true EP2710292A1 (en) 2014-03-26
EP2710292B1 EP2710292B1 (en) 2016-03-30

Family

ID=46201740

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Application Number Title Priority Date Filing Date
EP12725118.9A Active EP2710292B1 (en) 2011-05-16 2012-05-09 Medical illumination device for operating unit

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Country Link
EP (1) EP2710292B1 (en)
FR (1) FR2975460B1 (en)
WO (1) WO2012156617A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3000784B1 (en) 2013-01-04 2018-07-27 Steris MEDICAL LIGHTING DEVICE
CN104235755A (en) * 2013-06-07 2014-12-24 欧司朗有限公司 Lens and lighting device with same
DE202018106344U1 (en) * 2018-11-08 2018-11-14 Karl Leibinger Medizintechnik Gmbh & Co. Kg Surgical lights housing
CA3165963A1 (en) 2020-01-31 2021-08-05 David A. WESTENFELDER II Light head with rotating lens assembly and method of operating same

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0750728A1 (en) * 1994-11-17 1997-01-02 CUNNINGHAM, David W. Lighting device incorporating a zoomable beamspreader
DE502004003272D1 (en) 2004-02-28 2007-05-03 Trumpf Kreuzer Med Sys Gmbh surgical light
ATE526543T1 (en) * 2005-05-13 2011-10-15 Trumpf Medizin Systeme Gmbh & Co Kg SURGICAL LIGHT WITH SEVERAL INDIVIDUAL HEADLIGHTS OR LIGHT MODULES
DE502005002660D1 (en) * 2005-05-14 2008-03-13 Trumpf Kreuzer Med Sys Gmbh Operating light with zone-wise intensity control
US20100210918A1 (en) * 2006-08-24 2010-08-19 Jameson, Llc Task light
DE102007048115A1 (en) * 2007-10-05 2009-04-09 Trilux Gmbh & Co. Kg LED surgical light
FR2947611B1 (en) * 2009-07-02 2013-04-12 Zenium OPTICAL MODULE AND THREE-BRANCH LIGHTING DEVICE FOR THE LIGHTING OF OPERATING FIELDS
CN201621547U (en) * 2009-08-28 2010-11-03 鼎众股份有限公司 Multisource shadowless operating lamp

Also Published As

Publication number Publication date
FR2975460A1 (en) 2012-11-23
WO2012156617A1 (en) 2012-11-22
EP2710292B1 (en) 2016-03-30
FR2975460B1 (en) 2016-04-15

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