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EP0366878A1 - Operating table - Google Patents

Operating table Download PDF

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Publication number
EP0366878A1
EP0366878A1 EP89113929A EP89113929A EP0366878A1 EP 0366878 A1 EP0366878 A1 EP 0366878A1 EP 89113929 A EP89113929 A EP 89113929A EP 89113929 A EP89113929 A EP 89113929A EP 0366878 A1 EP0366878 A1 EP 0366878A1
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EP
European Patent Office
Prior art keywords
patient support
support
patient
operating
axis
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.)
Ceased
Application number
EP89113929A
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German (de)
French (fr)
Inventor
Rudolf Heller
Alfred Michel
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.)
Carl Zeiss SMT GmbH
Original Assignee
Oerlikon Contraves AG
Carl Zeiss SMT GmbH
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 Oerlikon Contraves AG, Carl Zeiss SMT GmbH filed Critical Oerlikon Contraves AG
Publication of EP0366878A1 publication Critical patent/EP0366878A1/en
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/02—Adjustable operating tables; Controls therefor
    • A61G13/04—Adjustable operating tables; Controls therefor tiltable around transverse or longitudinal axis

Definitions

  • the invention relates to an operating table, in particular for ear, nose and ear microsurgery, in which the operating field remains essentially in the same place during the surgically required pitching and rolling movements of the patient support, and which one in a parallel to the longitudinal direction of the patient support has vertical axis lying roll axis.
  • the support frame which supports the patient support is carried by the parallel axis of the operating table via a parallel lever.
  • a drive guides the rolling movements of the patient support around its longitudinal axis of symmetry by means of the parallel lever steering. Due to the parallel steering, the rolling movements of the patient support run in such a way that an operating point lying in the longitudinal plane of symmetry remains unchanged in the same place in the patient's operating field.
  • the parallel lever steering is complicated. It contributes significantly to the manufacturing costs of an operating table, especially since it has to be carried out twice for structural reasons.
  • the relatively large number of moving parts also has the disadvantage of a large number of articulated connections, so that quite a lot of effort is necessary even in the production of a “play-free” articulation.
  • the overall game increases with the operating time and thus the movement precision and stability. One can imagine what this can mean in the field of microsurgery.
  • the invention is based on the object of creating an operating table of the type mentioned at the outset, which has a substantially low table storage effort with respect to the rolling movements of the patient support, such that the operating field is not shifted. According to the invention, this object is achieved by the features specified in the characterizing part of claim 1.
  • the subclaims relate to advantageous developments.
  • the operating table 1 consists essentially of a standing on the floor 2 and lockable chassis 3, a column 4 attached to it and a box support 5 for a support frame 6 with a patient support 7.
  • the patient support can optionally be in one Head, back, pelvis and leg support part can be divided, which are each adjustable in their position to each other.
  • In the standing column 4 there is a device for height adjustment of the operating table.
  • At the upper end of the pedestal there is an inclined axis pin 36, the elongated longitudinal axis of which forms the roll axis 43 and runs through the operating field 45.
  • the patient support can be pivoted about this axle bolt by means of a drive 50 arranged between the stand column and the support frame.
  • FIG. 3 now shows details of the operating table according to the invention.
  • a hydraulic drive 8 for the vertical lifting and lowering movement of the patient support 7.
  • the free end 10 of the piston rod 11 of the drive also referred to here as a lifting drive, is fastened in a telescopic tube 12 which is guided vertically in the column 4.
  • the cylinder 13 of the drive 8 is attached to the chassis 3 of the operating table.
  • the pitch bearing 16 is fastened on the free end 14 of the telescopic tube 12, in which the pitch axis pin 18 directed transversely to the patient support 7 is rotatably fastened.
  • the box beam 5 is carried by the pitch axis pin 18, which is orthogonal to the vertical plane x-x, in which the roll axis 43 lies, and can be pivoted about it.
  • the box girder 5 (FIG. 4) is provided with two bearings 20 and 21, which can be rotated about the two free ends 23 and 24 of the pitch axle pin 18 protruding from the pitch bearing 16.
  • the pitching movements of the box support 5 with the patient support 7 are controlled by a hydraulic drive 25, for example.
  • the drive 25, hereinafter referred to as the pitch drive can be rotated about a pin 26 on the box support 5, while the free end of its piston rod 27 can be rotated about a pin 28 on an offset 30 of the pitch bearing 16.
  • the box support 5 is provided with a roller bearing 35 in which the axle pin 36 of the patient support 7 is fastened.
  • the axis pin 36 lies in the vertical plane x - x parallel to the longitudinal direction of the patient support.
  • a bearing 40 or 41 of the support frame 6 of the patient support 7 is rotatably supported.
  • the axis pin 36 forms such an angle ⁇ with the patient support 7 that its elongated longitudinal axis 43, i.e. the roll axis, after penetrating the patient support at a point 44, through the center 49 of an operating field 45 which is in or on the head 47 of one on the patient support patient 48 outstretched, runs.
  • the rolling movements of the patient support 7 around the axle pin 36 are controlled by a hydraulic drive 50, for example.
  • the cylinder 51 of the drive 50 hereinafter referred to as a roller drive, is articulated to a pin 52 on the box support 5.
  • the free end 53 of the piston rod 54 is articulated to a pin 55 attached to the support frame 6.
  • the drive 50 is actuated, the patient support 7 is rotated about the roll axis 43 by the axle pin 36 depending on the direction of adjustment according to the arrows 56 and 56 '. Since the roll axis 43 runs through the center 49 of the operation field 45 in or on the head 47 of the patient, the head remains unchanged at the same location during the roll movements of the patient support.
  • the patient's surgical site 58 e.g. the inner ear, describes only a small part of an arc with the radius of the relatively small distance between roll axis 43 and inner ear. The surgical microscope directed at the surgical site 58 therefore only needs to be slightly adjusted by the surgeon.
  • the pitch drive 25 and the lifting drive 8 are controlled in a manner known per se with opposite, as it were compensating movements, by the piston rod 27 of one drive and the piston rod 11 of the other drive simultaneously, but with a predetermined speed ratio in order to compensate for the change in height of the operating field 45 caused by the pitch rotation around the pitch axis pin 18.
  • the operating field 45 and the head 47 of the patient would be raised or lowered.
  • the patient support is simultaneously lowered or raised by the lifting drive 8 by an amount compensating for the height difference, so that the operating field and the head remain virtually unchanged at the same location.
  • this compensation remains subject to a residual error, since only one of a rotational movement, which consists of two translational movements in Cartesian decomposition, for example a vertical and a horizontal translation compensating translational movement, here the vertical one.
  • the remaining error includes the omitted translation movement, here the horizontal one, which, however, is much smaller than the compensated vertical one.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)

Abstract

Der Operationstisch besitzt eine Patientenauflage (7), die auf einem Rolllager (35) gelagert ist. Die Lagerachse entspricht der Rollachse und bildet mit der Patientenauflage (7) einen Winkel (α), so dass die Verlängerung der Lagerachse nach Durchstossen der Patientenauflage (7) in einem Punkt (44) durch den Mittelpunkt (49) eines Operationsfeldes (45) im oder am Kopfe (47) eines auf der Patientenauflage (7) ausgestreckten Patienten (48) verläuft. Auf diese Weise wird erreicht, dass dieser Mittelpunkt (49) beim Ausführen von Rollbewegungen mit der Patientenauflage (7) mittels des Antriebs für die Rollbewegung (50) unverändert am selben Ort bleibt. Durch diese Anordnung der Rollachse (43) wird der Stellmittelaufwand für die Rollbewegungen der Patientenauflage (7) erheblich verringert.The operating table has a patient support (7) which is mounted on a roller bearing (35). The bearing axis corresponds to the roll axis and forms an angle (α) with the patient support (7), so that the extension of the bearing axis after the patient support (7) is pierced at a point (44) through the center (49) of an operating field (45) in the or on the head (47) of a patient (48) stretched out on the patient support (7). In this way it is achieved that this center point (49) remains unchanged at the same location when performing rolling movements with the patient support (7) by means of the drive for the rolling movement (50). This arrangement of the roll axis (43) considerably reduces the amount of actuating means for the roll movements of the patient support (7).

Description

Die Erfindung betrifft einen Operationstisch, insbesondere für die Hals-, Nasen- und Ohren-Mikrochirurgie, bei welchem das Operationsfeld während der chirurgisch erforderlichen Nick- und Rollbewegungen der Patientenaufla­ge im wesentlichen am selben Ort verbleibt, und welcher eine in einer par­allel zur Längsrichtung der Patientenauflage stehenden Vertikalebene liegen­de Rollachse aufweist.The invention relates to an operating table, in particular for ear, nose and ear microsurgery, in which the operating field remains essentially in the same place during the surgically required pitching and rolling movements of the patient support, and which one in a parallel to the longitudinal direction of the patient support has vertical axis lying roll axis.

Bei einem bekannten Operationstisch (EP 0086 881 B1) ist der Auflagerah­men, der die Patientenauflage trägt, über eine Hebel-Parallellenkung von der Längsachse des Operationstisches getragen. Ein Antrieb führt mittels der Hebel-Parallellenkung die Rollbewegungen der Patientenauflage um ihre Längs-Symmetrieachse. Durch die Parallellenkung verlaufen die Rollbewegun­gen der Patientenauflage so, dass ein in der Längs-Symmetrieebene liegen­der Operationspunkt im Operationsfeld des Patienten unverändert am selben Ort bleibt.Die Hebel-Parallellenkung ist jedoch kompliziert. Sie trägt nicht unerheblich zu den Herstellungskosten eines Operationstisches bei, zumal sie aus statischen Gründen doppelt ausgeführt werden muss. Die relativ grosse Anzahl beweglicher Teile hat auch den Nachteil einer grossen An­zahl gelenkiger Verbindungen, sodass schon bei der Herstellung eines "spiel­freien" Gelenkwerkes ein ziemlicher Aufwand nötig ist. Das Gesamtspiel nimmt mit der Betriebsdauer zu und damit die Bewegungspräzision und Stabili­tät ab. Man kann sich vorstellen was dies im Gebiet der Mikrochirurgie be­deuten kann.In a known operating table (EP 0086 881 B1), the support frame which supports the patient support is carried by the parallel axis of the operating table via a parallel lever. A drive guides the rolling movements of the patient support around its longitudinal axis of symmetry by means of the parallel lever steering. Due to the parallel steering, the rolling movements of the patient support run in such a way that an operating point lying in the longitudinal plane of symmetry remains unchanged in the same place in the patient's operating field. However, the parallel lever steering is complicated. It contributes significantly to the manufacturing costs of an operating table, especially since it has to be carried out twice for structural reasons. The relatively large number of moving parts also has the disadvantage of a large number of articulated connections, so that quite a lot of effort is necessary even in the production of a “play-free” articulation. The overall game increases with the operating time and thus the movement precision and stability. One can imagine what this can mean in the field of microsurgery.

Der Erfindung liegt die Aufgabe zugrunde, einen Operationstisch der ein­gangs erwähnten Art zu schaffen, der einen wesentlich geringen Tischlage­rungsaufwand bezüglich der Rollbewegungen der Patientenauflage, derart, dass das Operationsfeld nicht verschoben wird, erfordert. Diese Aufgabe wird erfindungsgemäss durch die im Kennzeichen des Anspruchs 1 angegebe­nen Merkmale gelöst. Die Unteransprüche betreffen vorteilhafte Weiterbil­dungen.The invention is based on the object of creating an operating table of the type mentioned at the outset, which has a substantially low table storage effort with respect to the rolling movements of the patient support, such that the operating field is not shifted. According to the invention, this object is achieved by the features specified in the characterizing part of claim 1. The subclaims relate to advantageous developments.

Ein Ausführungsbeispiel des Erfindungsgegenstandes ist nachfolgend an­hand der Zeichnungen beschrieben. Es zeigt:

  • Fig. 1 eine Seitenansicht des Operationstisches gemäss der Erfindung;
  • Fig. 2 die Vorderansicht in Pfeilrichtung II in Fig. 1;
  • Fig. 3 den Längsschnitt gemäss III-III in Fig. 2;
  • Fig. 4 die Ansicht in Pfeilrichtung IV in Fig. 3, teilweise im Schnitt.
An embodiment of the subject matter of the invention is described below with reference to the drawings. It shows:
  • Figure 1 is a side view of the operating table according to the invention.
  • Fig. 2 is the front view in the direction of arrow II in Fig. 1;
  • 3 shows the longitudinal section according to III-III in Fig. 2.
  • Fig. 4 is a view in the direction of arrow IV in Fig. 3, partly in section.

Nach den Fig. 1 und 2 besteht der Operationstisch 1 im wesentlichen aus einem auf dem Boden 2 stehenden und feststellbaren Fahrgestell 3, einer darauf befestigten Standsäule 4 und einem Kastenträger 5 für einen Auflage­rahmen 6 mit einer Patientenauflage 7. Die Patientenauflage kann ggf. in einen Kopf-, Rücken-, Becken- und Beinauflageteil unterteilt sein, die je­weils in ihrer Lage zueinander verstellbar sind. In der Standsäule 4 befin­det sich eine Vorrichtung zur Höhenverstellung des Operationstisches. Am oberen Ende der Standsäule ist ein schräg gestellter Achsbolzen 36 angeord­net, dessen verlängerte Längsachse die Rollachse 43 bildet und durch das Operationsfeld 45 verläuft. Mittels eines zwischen der Standsäule und dem Auflagerahmen angeordneten Antriebs 50 kann die Patientenauflage um die­sen Achsbolzen verschwenkt werden.1 and 2, the operating table 1 consists essentially of a standing on the floor 2 and lockable chassis 3, a column 4 attached to it and a box support 5 for a support frame 6 with a patient support 7. The patient support can optionally be in one Head, back, pelvis and leg support part can be divided, which are each adjustable in their position to each other. In the standing column 4 there is a device for height adjustment of the operating table. At the upper end of the pedestal there is an inclined axis pin 36, the elongated longitudinal axis of which forms the roll axis 43 and runs through the operating field 45. The patient support can be pivoted about this axle bolt by means of a drive 50 arranged between the stand column and the support frame.

Figur 3 zeigt nun Details des erfindungsgemässen Operationstisches. In der Standsäule 4 befindet sich ein bspw. hydraulischer Antrieb 8 für die vertikale Hub- und Senkbewegung der Patientenauflage 7. Das freie Ende 10 der Kolbenstange 11 des Antriebs, hier weiterhin als Hubantrieb bezeich­net, ist in einem Teleskoprohr 12 befestigt, das in der Standsäule 4 verti­kal geführt ist. Der Zylinder 13 des Antriebs 8 ist auf dem Fahrgestell 3 des Operationstisches befestigt. Auf dem freien Ende 14 des Teleskoprohres 12 ist das Nicklager 16 befestigt, in dem der quer zur Patientenauflage 7 gerichtete Nickachsbolzen 18 drehbar befestigt ist.FIG. 3 now shows details of the operating table according to the invention. In the pedestal 4 there is, for example, a hydraulic drive 8 for the vertical lifting and lowering movement of the patient support 7. The free end 10 of the piston rod 11 of the drive, also referred to here as a lifting drive, is fastened in a telescopic tube 12 which is guided vertically in the column 4. The cylinder 13 of the drive 8 is attached to the chassis 3 of the operating table. The pitch bearing 16 is fastened on the free end 14 of the telescopic tube 12, in which the pitch axis pin 18 directed transversely to the patient support 7 is rotatably fastened.

Der Kastenträger 5 ist vom Nickachsbolzen 18, der orthogonal zur Vertikal­ebene x-x steht, in der die Rollachse 43 liegt, getragen und um diesen schwenkbar. Dazu ist der Kastenträger 5 (Fig. 4) mit zwei Lagern 20 bzw. 21 versehen, die um die beiden, aus dem Nicklager 16 hervorstehenden, freien Enden 23 bzw. 24 des Nickachsbolzens 18 drehbar sind.The box beam 5 is carried by the pitch axis pin 18, which is orthogonal to the vertical plane x-x, in which the roll axis 43 lies, and can be pivoted about it. For this purpose, the box girder 5 (FIG. 4) is provided with two bearings 20 and 21, which can be rotated about the two free ends 23 and 24 of the pitch axle pin 18 protruding from the pitch bearing 16.

Die Nickbewegungen des Kastenträgers 5 mit der Patientenauflage 7 werden von einem bspw. hydraulischen Antrieb 25 gesteuert. Der Antrieb 25, nachfol­gend als Nickantrieb bezeichnet, ist um einen Stift 26 am Kastenträger 5 drehbar, während das freie Ende seiner Kolbenstange 27 um einen Stift 28 auf einer Abkröpfung 30 des Nicklagers 16 drehbar ist.The pitching movements of the box support 5 with the patient support 7 are controlled by a hydraulic drive 25, for example. The drive 25, hereinafter referred to as the pitch drive, can be rotated about a pin 26 on the box support 5, while the free end of its piston rod 27 can be rotated about a pin 28 on an offset 30 of the pitch bearing 16.

Der Kastenträger 5 ist mit einem Rollager 35 versehen, in dem der Achsbol­zen 36 der Patientenauflage 7 befestigt ist. Der Achsbolzen 36 liegt in der Vertikalebene x - x parallel zur Längsrichtung der Patientenauflage. Auf den Enden 37 und 38 des Achsbolzens 36, die aus dem Rollager 35 hervor­stehen, ist je ein Lager 40 bzw. 41 des Auflagerahmens 6 der Patientenauf­lage 7 drehbar gelagert. Der Achsbolzen 36 bildet einen solchen Winkel α mit der Patientenauflage 7, dass dessen verlängerte Längsachse 43, also die Rollachse, nach Durchstossen der Patientenauflage in einem Punkt 44, durch den Mittelpunkt 49 eines Operationsfeldes 45, welches im oder am Kopf 47 eines auf der Patientenauflage rücklings ausgestreckten Patienten 48 liegt, verläuft.The box support 5 is provided with a roller bearing 35 in which the axle pin 36 of the patient support 7 is fastened. The axis pin 36 lies in the vertical plane x - x parallel to the longitudinal direction of the patient support. On the ends 37 and 38 of the axle pin 36, which protrude from the roller bearing 35, a bearing 40 or 41 of the support frame 6 of the patient support 7 is rotatably supported. The axis pin 36 forms such an angle α with the patient support 7 that its elongated longitudinal axis 43, i.e. the roll axis, after penetrating the patient support at a point 44, through the center 49 of an operating field 45 which is in or on the head 47 of one on the patient support patient 48 outstretched, runs.

Im Gegensatz zum bekannten Operationstisch gemäss EP 0'086'881 fällt die Längsachse des Rollagers 35 bzw. des Achsbolzens 36 mit der Rollachse 43 zusammen, was die wesentlich einfachere Konstruktion von Lagerung und Antrieb für die Rollbewegung der Patientenauflage 7 ermöglicht.In contrast to the known operating table according to EP 0'086'881, the longitudinal axis of the roller bearing 35 or of the axle pin 36 coincides with the roller axis 43 together, which allows the much simpler construction of storage and drive for the rolling movement of the patient support 7.

Die Rollbewegungen der Patientenauflage 7 um den Achsbolzen 36 werden von einem bspw. hydraulischen Antrieb 50 gesteuert. Der Zylinder 51 des Antriebs 50, nachfolgend als Rollantrieb bezeichnet, ist mit einem Stift 52 am Kastenträger 5 gelenkig verbunden. Das freie Ende 53 der Kolbenstange 54 ist gelenkig mit einem am Auflagerahmen 6 befestigten Stift 55 verbun­den. Beim Betätigen des Antriebs 50 wird die Patientenauflage 7 um die Rollachse 43 durch den Achsbolzen 36 je nach Stellrichtung gemäss den Pfei­len 56 bzw. 56′ gedreht. Da die Rollachse 43 durch den Mittelpunkt 49 des Operationsfeldes 45 im oder am Kopf 47 des Patienten verläuft, bleibt die­ser bei den Rollbewegungen der Patientenauflage mit dem Patienten unverän­dert am selben Ort. Die Operationsstelle 58 des Patienten, z.B. das Innen­ohr, beschreibt nur einen kleinen Teil eines Kreisbogens mit dem Radius des relativ kleinen Abstands zwischen Rollachse 43 und Innenohr. Das auf die Operationsstelle 58 gerichtete Operationsmikroskop braucht somit vom Chirurgen nur geringfügig nachgeführt zu werden.The rolling movements of the patient support 7 around the axle pin 36 are controlled by a hydraulic drive 50, for example. The cylinder 51 of the drive 50, hereinafter referred to as a roller drive, is articulated to a pin 52 on the box support 5. The free end 53 of the piston rod 54 is articulated to a pin 55 attached to the support frame 6. When the drive 50 is actuated, the patient support 7 is rotated about the roll axis 43 by the axle pin 36 depending on the direction of adjustment according to the arrows 56 and 56 '. Since the roll axis 43 runs through the center 49 of the operation field 45 in or on the head 47 of the patient, the head remains unchanged at the same location during the roll movements of the patient support. The patient's surgical site 58, e.g. the inner ear, describes only a small part of an arc with the radius of the relatively small distance between roll axis 43 and inner ear. The surgical microscope directed at the surgical site 58 therefore only needs to be slightly adjusted by the surgeon.

Beim Ausführen von Nickbewegungen der Patientenauflage 7 um die Nickachse werden der Nickantrieb 25 und der Hubantrieb 8 in an sich bekannter Weise mit entgegengesetzten, sich gleichsam kompensierenden Bewegungen gesteuert, indem die Kolbenstange 27 des einen Antriebs und die Kolbenstange 11 des anderen Antriebs gleichzeitig, aber mit einem vorbestimmten Geschwindig­keitsverhältnis bewegt werden, um die durch die Nickdrehung um den Nickachs­bolzen 18 bewirkte Höhenveränderung des Operationsfeldes 45 zu kompen­sieren. Bei einer lediglichen Drehung um den Nickachsbolzen 18, würden ja das Operationsfeld 45 und der Kopf 47 des Patienten angehoben bzw. abgesenkt. Deswegen wird bei einer Nickdrehung die Patientenauflage vom Hubantrieb 8 gleichzeitig um einen die Höhendifferenz kompensierenden Be­trag abgesenkt bzw. angehoben, so dass das Operationsfeld und der Kopf praktisch unverändert am selben Ort bleiben. Allerdings muss beachtet werden, dass diese Kompensation mit einem Restfehler behaftet bleibt, da von einer Rotationsbewegung, die kartesisch zerlegt aus zwei Translati­onsbewegungen besteht, bspw. eine vertikale und eine horizontale Translation, nur eine kompensierende Translationsbewegung, hier die vertikale, ausgeführt wird. Der Restfehler beinhaltet die unterlassene Translationsbewegung, hier die horizontale, die allerdings wesentlich kleiner ist als die kompensierte verti­kale.When executing pitching movements of the patient support 7 about the pitch axis, the pitch drive 25 and the lifting drive 8 are controlled in a manner known per se with opposite, as it were compensating movements, by the piston rod 27 of one drive and the piston rod 11 of the other drive simultaneously, but with a predetermined speed ratio in order to compensate for the change in height of the operating field 45 caused by the pitch rotation around the pitch axis pin 18. In the event of a single rotation about the pitch axis pin 18, the operating field 45 and the head 47 of the patient would be raised or lowered. For this reason, during a pitch rotation, the patient support is simultaneously lowered or raised by the lifting drive 8 by an amount compensating for the height difference, so that the operating field and the head remain virtually unchanged at the same location. However, it must be noted that this compensation remains subject to a residual error, since only one of a rotational movement, which consists of two translational movements in Cartesian decomposition, for example a vertical and a horizontal translation compensating translational movement, here the vertical one. The remaining error includes the omitted translation movement, here the horizontal one, which, however, is much smaller than the compensated vertical one.

Daraus ergibt sich, dass auch dann, wenn eine Rollbewegung der Patien­tenauflage 7 kombiniert mit einer Nickbewegung ausgeführt wird, und diese eine neue Lage 7′ (Fig. 1 und 2) einnimmt, das Operationsfeld 45 und der Kopf 47 des Patienten im wesentlichen, das heisst mit einer tolerierbaren, kleinen Abweichung unverändert am gleichen Ort verbleiben.It follows that even if a rolling movement of the patient support 7 is carried out combined with a pitching movement, and this takes a new position 7 '(FIGS. 1 and 2), the operating field 45 and the head 47 of the patient essentially, that means to remain unchanged with a tolerable, small deviation in the same place.

Claims (4)

1. Operationstisch, insbesondere für die Hals-, Nasen- und Ohren-Mikrochirurgie, bei welchem das Operationsfeld während der chirurgisch erforderlichen Nick- und Rollbewegungen der Pa­tientenauflage im wesentlichen am selben Ort verbleibt, und welcher eine in einer parallel zur Längsrichtung der Patientenauflage stehenden Vertikalebene liegende Rollachse auf­weist, dadurch gekennzeichnet, dass das Tischlager (35) zur Patientenauflage (7) um einen Winkel (α) geneigt ist und die ver­längerte Achse des Tischlagers durch einen vorbestimmten, in der Vertikalebene (x-x) liegenden Mittelpunkt (49) in einem Operati­onsfeld (45), in welchen der Patient gelegt wird, verläuft.1. Operating table, in particular for ear, nose and ear microsurgery, in which the operating field remains essentially in the same place during the surgically required pitching and rolling movements of the patient support, and which one in a vertical plane parallel to the longitudinal direction of the patient support has lying roll axis, characterized in that the table support (35) is inclined to the patient support (7) by an angle (α) and the extended axis of the table support by a predetermined center point (49) lying in the vertical plane (xx) in an operating field (45) in which the patient is placed runs. 2. Operationstisch nach Anspruch 1, dadurch gekennzeichnet, dass das Tischlager (35) mit der Patientenauflage (7) einen Winkel (α) bildet, derart, dass die verlängerte Längsachse die Rollachse (43) bildet und nach Durchstossen der Patientenauflage durch den Opera­tionsfeld (45), in welchem der Kopf (47) des auf der Patientenauf­lage (7) ausgestreckten Patienten (48) liegt, verläuft.2. Operating table according to claim 1, characterized in that the table support (35) forms an angle (α) with the patient support (7) such that the elongated longitudinal axis forms the roll axis (43) and after the patient support has been pierced through the operating field ( 45) in which the head (47) of the patient (48) stretched out on the patient support (7) runs. 3. Operationstisch nach Anspruch 1 oder 2, gekennzeichnet durch einen Auflagerahmen (6) für die Patientenauflage (7), eine Standsäule (4) und einen über einen Antrieb für die Höhenverstellung der Pa­tientenauflage von der Standsäule getragenen Kastenträger (5), auf dem ein das Tischlager (35) bildendes Rollager mit dem Rollachs­bolzen (36) so befestigt ist, dass der Auflagerahmen (6) am Tischla­ger (35) drehbar gelagert ist.3. Operating table according to claim 1 or 2, characterized by a support frame (6) for the patient support (7), a pedestal (4) and a box girder (5) carried by a support for the height adjustment of the patient support, on which a the roller bearing forming the table bearing (35) is fastened to the roller axle bolt (36) in such a way that the support frame (6) is rotatably mounted on the table bearing (35). 4. Operationstisch nach Anspruch 3, mit einem Antrieb für die Rollbewegungen der Patientenauflage, dadurch gekennzeichnet, dass der Antrieb (50) einerseits mit dem Auflagerahmen (6) und andererseits mit dem Kastenträger (5) gelenkig verbunden ist.4. Operating table according to claim 3, with a drive for the rolling movements of the patient support, characterized in that the drive (50) is articulated on the one hand with the support frame (6) and on the other hand with the box girder (5).
EP89113929A 1988-11-04 1989-07-28 Operating table Ceased EP0366878A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4105/88 1988-11-04
CH410588 1988-11-04

Publications (1)

Publication Number Publication Date
EP0366878A1 true EP0366878A1 (en) 1990-05-09

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EP89113929A Ceased EP0366878A1 (en) 1988-11-04 1989-07-28 Operating table

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US (1) US4958817A (en)
EP (1) EP0366878A1 (en)
JP (1) JPH02180258A (en)
CA (1) CA2000073A1 (en)

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CN103584971A (en) * 2013-11-20 2014-02-19 赵小祺 Operating table
CN103584971B (en) * 2013-11-20 2015-08-05 赵小祺 A kind of operating-table

Also Published As

Publication number Publication date
US4958817A (en) 1990-09-25
CA2000073A1 (en) 1990-05-04
JPH02180258A (en) 1990-07-13

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