DE3023266A1 - WOUND HOOK FOR SURGICAL PURPOSES - Google Patents

Description

Hanau, June 20, 1930 ZPL-Zw / W

ORIGINAL HAlNiAU HERAEUS GmbH, Hanau (Main)

Patent and utility model auxiliary application

"ΐ / and hook for surgical purposes"

The invention relates to a retractor for surgical purposes. Such retractors are used by the surgeon to ζ. B. by a Cut to keep separate areas of skin apart in order to make a to enable undisturbed work in the operating field.

Known retractors are made of metallic materials, since they must have sufficient mechanical strength, must be hot-sterilizable and toxicologically harmless.

It is known not only the operating room but also Illuminate the operating area specifically, as intensively as possible, as otherwise there will be more or less strong shadows comes through hands and instruments.

A solution to this problem exists according to DE-OS 22 29 In addition to arranging a light guide on an operating room lamp, which is flexible and made up of different types Directions of incidence can be adjusted to the basic field.

130061/0210

Unfortunately, it has been found in practice that users make relatively little use of this option, because the proximity of the end of the light guide to the surgical field can subjectively disturb the surgeon.

The object of the invention is to create low-shadow illumination for an operating field without additional lighting elements to bring into the area of the operating field.

This object is achieved by a retractor according to claim 1. The subclaims contain advantageous embodiments of the invention included.

The solution according to the invention has independent of its embodiments Better operating field lighting without additional, obstructing elements in the vicinity of the wound rum advantage. Illumination with fewer shadows and better The incidence of light makes it possible to recognize surface structures within even deep surgical wounds larger angles of incidence than previously possible.

For the light-guiding inserts or attachments made of light-guiding material, plastics such. B. acrylic glass is used. Such a light guide can easily be manufactured as a disposable item. This also applies to the solution in which the retractor is made entirely of light-conducting material. Such a light-conducting retractor is advantageously connected via a coupling piece to a fiber light guide or a liquid light guide, which in turn is connected to a radiation source. The radiation to be transmitted can be both visible radiation and UV radiation. In addition to radiation via the light-conducting element also germ-free air, in particular laminar pure air can be supplied from a source.

130061/0210

IT)

Show it:

1 shows a retractor made of light-conducting material, FIG. 2 shows a retractor with a light-conducting insert and FIG. 3 shows a retractor with a light-conducting attachment.

In the embodiment according to FIG. 1, the retractor is made entirely of light-conducting material, e.g. B. Plexiglas produced. This has a refractive index of η = 1.5. This is why all the rays of light that pass inside the material become and at an angle of incidence of> 41 ° hit the PLexiglas / air interface, into the interior of the material totally reflected. However, light emission is only possible if the limit angle is not reached, which is achieved through suitable light guidance and shaping the light-conducting part or by Roughening of the surface of the same in the area in which sandblasting is desired is possible. The radiation occurs then out of the retractor in the roughened part, in the direction in which the surgical field is normally located. "Roughened" is understood to mean any type of structuring of the surface, be it chemical, mechanical, physical or other means, as far as this is suitable to direct the beam exit in the desired direction.

The retractor 1 is intended for holding in a handle and for connection to a radiation source via light guides.

FIG. 2 shows an exemplary embodiment in which the retractor is made of conventional material, but only has a frame-like shape ₉ while it is provided with a light-conducting insert 2 approximately in its area opposite the wound (central area). The frame bears the reference number 3. The roughened or structured

_ ₆ _ 130061/0210

Surface areas are numbered 4. The beam exit is indicated by arrows 5. The light guide insert can like the attachment according to FIG. 3, it can be detachably or permanently connected to the metal retractor. It is packaged sterile, designed as a disposable item. In Figure 3, the attachment is denoted by, otherwise the reference numerals are those of previous figures accordingly. The insert or attachment can be fitted with a clamp, e.g. B. elastically resilient, attachable be on the handle of the retractor 1. A coupling piece 7 is used for mechanical and optical coupling to a fiber light guide or liquid light guide that connects to the source connected is. The coupling piece is also designed as a lens system (collimator). If necessary, a Cylindrical lens for radiation into the flat plastic hooks can be used.

At the same time or instead of the visible radiation, UV radiation can also be transferred directly into the air space to reduce germs dea. Surgical field can be introduced to promote wound healing or together with sterile air, e.g. B. by a hollow air supply hose surrounding the light guide. For the transmission of light and UV-A and partly also UV-B, z. B. Acrylic glass can be used. For UV-C transmission is an embodiment of the light-guiding elements, e.g. B. made of quartz glass, advantageous. Then z. B. also one Sterilization at over 100 ° C, for example around 135 ° C, possible.

- 7 - 130061/0210

Claims (1)

Hanau, June 20, 1930 ZPL-Zw / W ORIGINAL HAIiAU HERAEUS GmbH, Hanau (Main) Patent and utility model auxiliary application "v / undhooks for surgical purposes" Claims ι i. ) ^T > v ^r undhaken for surgical purposes, characterized ;. that it consists at least partially of a light-conducting material, or that a light guide is connected to the iundria, so that radiation is directed towards the fund. 2. Retractor according to claim 1, characterized dadurcii, dai3 he ordered made entirely of light-conducting material. 5. Retractor according to claim 1, characterized in that it has a metallic frame which contains a conductive insert. 4. ΐ / undhaken according to claim 1, characterized ^ eiiennzuicrinfM ;, nuii it contains a licnt "Ie ι £ <..n-.u; n essay on the metallic wuncihakun. 1 3006 1/0210 ORIGINAL INSPECTED 5. V / undhaken according to claim 2 or ^, characterized in that that a light-conducting surface facing the wound area is structured in such a way that at least partially the The limit angle of total reflection is not reached. b. Retractor according to one of the preceding claims, characterized in that it has a coupling piece for mechanical and optical coupling with a fiber light guide or liquid light guide which is connected to the radiation source. ? "· V / undhaken according to claim 6, characterized in that the coupling piece has a collimator · for the radiation contains in the planar light-conducting hook area. o. i / undhaken according to one or more of the preceding claims, characterized in that the light guide and iir circle it end hook also UT radiation for germination the air over the wound or direct. To the "irradiation of Wound with UV radiation are designed to transmit or emit. 9. Retractor according to one or more of the preceding claims, characterized in that it has outlets directed at the wound field from channels for the supply of sterile Air, especially pure air, in laminar piston flow from a source. 1 3 O O G 1 / () 2 1 O BATH ORIGINAL