DE8600868U1 - Microsurgical forceps - Google Patents

Description

Micro-surgical forceps

The innovation relates to micro-surgical forceps according to the preamble of claim 1.

Microsurgical forceps of this type are used for example *, for Cutting through tissue, in that the jaw parts are designed as cutting edges, or for grasping smallest pieces of tissue or foreign bodies, in that the jaws are designed like tweezers. An execution the generic microsurgical forceps is described in DE-GB 1,836,439, for example.

When working with the known microsurgical forceps, difficulties often arise with regard to the adequate lighting of the work area. Although the operating field is sufficiently illuminated, however, the instrument itself or the surgeon's hand often shadows the part of the operating field in which the microsurgical forceps are used.

Postgiroamt: Karlsruhe 76S7Ö-7S4 Ba'nkSontoslJeutearieeank AG Villingen (BLZ 69470039) 146332

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The innovation is based on the task of creating a micro ^ to create surgical forceps that provide adequate illumination of the work area under all operating conditions guaranteed.

This task is performed with microsurgical forceps of the genus mentioned at the beginning, solved according to the innovation by the features of the characterizing part of An ~ claim 1.

Advantageous embodiments of the innovation are in the Subclaims indicated.

In the case of the microsurgical forceps according to the invention by means of a light guide, light is guided directly to the point of the surgical field where the Pliers is used * The light guide is from the rear end of the pliers along this to the guided front end of the pliers shaft, so that the light guide neither the handling of the pliers nor the The surgeon's view of the area of operation is impaired. By guiding the light guide along the Forceps shaft and the arrangement of the front light exit surface directly at the front end of the forceps shaft the light emerging from the light guide is always inevitably directed to the area in which the pliers are used.

In order to protect the light guide and to guide it precisely, a tube is preferably attached to the fixed handle part and the

Soldered pliers shaft into which the light guide is fine-tuned.

The light guide or the tube guiding it are preferably located in the front area of the pliers shaft a rounded, approximately semicircular cross-section on / with the flat side of the cross-section the forceps shaft. This results in a round or almost round overall cross-section of the pliers in the area of the forceps shaft with a small diameter despite the additional light guide.

The jaw parts are appropriately angled against the axis of the forceps shaft or the rod so that they protrude in front of the outlet surface of the light guide. Through this If the light beam emerging from the light guide is directed exactly onto the jaw parts and a lower one The cross-section of the light guide is sufficient for sufficient illumination of the work area.

At the rear end of the light guide, an optical connector is provided, by means of which a light source can be connected to the light guide.

In the following the invention is based on one in the Drawing illustrated embodiment explained in more detail. Show it

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Figure 1 is a side view of the microsurgical Tongs,

Figure 2 is a 90 ° rotated side view of the pliers and

Figure 3 shows a cross section of the forceps aiii anterior End of the pliers shaft.

The micro-surgical forceps have a tubular forceps shaft 10, at the front end of which a solid one The jaw part 12 is attached * The forceps shaft 10 is in the socket-shaped front end of a fixed handle part 14 used and defined in this.

In the pliers shaft 10, a rod is arranged axially displaceably, at the front end in a known manner Way, a pivotable jaw part 16 is articulated, which cooperates with the fixed jaw part 12. In the illustrated In the exemplary embodiment, the two jaw parts 12 and 16 are designed as cutting edges.

For the axial movement of the rod, two levers 18 are articulated at the rear end, which with their other Ends are articulated in the front ends of pushers 20. The front ends of the pushers 20 can move freely against each other and are pushed apart with a spring. The rear ends of the pushers are set in a block 22 which is attached to the rear end of the fixed handle part 14.

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A tube 24 runs along the pliers shaft 10 and the socket-shaped front end of the fixed handle part 14 and is soldered to these parts. From the socket-shaped front end of the fixed handle part 14, the tube 24 runs along the fixed handle part 14 into the block 22. From the rear end face of the block 22, a receptacle 26 leads into the block 22 up to the tube 24. A preferably multi-fiber light guide 28 is inserted into the tube 24, its rear light entry surface being flush with the bottom of the receptacle 26 and its front light exit surface at the front end of the tube 24 directly at the front end of the forceps shaft 10. The receptacle 26 educational k det a connector for connecting a light ί | source to the rear light entry surface of the light 1, conductor 28.

The tube 24 has a substantially semicircular shape Cross-section, which is with its flat side on the flat side of the also semicircular in cross-section Pliers shaft 10 applies. The pliers shaft 10 and the tube 24 thus add up to an approximately circular shape Total cross-section together. The jaw parts 12 and 16 are angled relative to the axis of the forceps shaft 10 and protrude in front of the front light exit surface of the light guide 28.

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Claims (1)

Dipl. Ing. Klaus Westphal . .. ... VValdstrasse 33 Dr. rer.naL Bernd Mussgnug Ί \ " .. jj \ . D-7] '3i) Va-VILLINGEN Dr.rer.nat.Otto Büchner Flossmannstrasse30a PATENTANWÄLTE D-8000 MUNICH 60 European patent attorneys Telephone 07721-56007 Telegr. Westbuch Villingen Telex 177721217 who u d Teletex 7721217 who u d Telephone 089-832446 Telegr. Westbuch Munich Telex 5213177webud Tslecop. 089-8344618 (CCITT3) attention webu 1252.4 Protection claims Microsurgical forceps with a tubular forceps shaft, with a rod displaceable in the forceps shaft, with a fixed mouth part attached to the front end of the forceps shaft, with a movable mouth part articulated at the front end of the rod, with a fixed handle part attached to the rear end of the forceps shaft and having a movable handle part articulated to the rear end of the rod, characterized in that a
Light guide (28) from the rear end of the fixed
Handle part (14) on this fixed handle part U4) and the pliers shaft (10) is guided along to the front end of the pliers shaft (3 0) and that the
Light guide (28) at its rear end a
Has connector. Pliers according to claim 1, characterized in that
the light guide (28) in one attached to the fixed handle part (14) and the pliers shaft (10)
Tube (24) is guided. 3. Pliers according to claim 2, characterized in that
the tube (24) is soldered to the pliers shaft (10)
is. Postgiroamt: Karlsruhe 76979J764 Ödlnkiontoi Üeufeeheiöank AG Villingen (BLZ 69470039) 146332 4 «pliers according to one of the preceding claims, characterized in that the connector in a block (22) is formed which at the same time supports the fixed end of the movable handle part records. (5. Pliers according to claim 4, characterized in that the movable handle part from at least einr-ii its front end resiliently outwardly pressed pusher (20). 6. Pliers according to one of the preceding claims, characterized in that the light guide (28) on its front end has an approximately semicircular cross-section, which with its flat side on the pliers shaft (10). j 7. Pliers according to one of the preceding claims, there characterized in that the jaw parts (12,16) against the axial direction of the forceps shaft (10) and the rod are angled so that they are in front of the front light exit surface of the light guide (28) protrude.