DE2330182A1 - PLIERS FOR SETTING TANTALUM CLIPS - Google Patents

Description

Dr. Hugo Wilcken
Dipi.-lng. Thomas Wilcken June 13, 1973

Patent attorneys "Dr. W./Al.

24 Lübeck, Breite Strasse 52-64
Telephone 76888

Applicant: Richard Wolf GmbH, 7134 Knittlingen, Pforzheimer

Street 22

Pliers for setting tantalum clips

The invention relates to pliers for setting Tantalum clips for ligating the fallopian tubes in women, consisting of a shaft with a proximal handle that can be opened and closing a distal clip forceps under observation by means of an optical system.

To tie the fallopian tubes in women, so-called clips made of tantalum are used to prevent pregnancy a special forceps under optical sight in the so-called, gynecological laparoscopy. One used two pliers units, namely the actual pliers for setting the clips and a smaller "pliers" or a movable one Hooks to better bring the fallopian tube into the area of the actual clip forceps and bring it better to be able to capture. In these known devices, the optics sit in a separate tube next to the clip pliers, what is disadvantageous because it is not possible to look directly into the area of the operating field, although the optics controls this field with a viewing direction of 160 ° and because this increases the diameter of the device.

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The object of the invention is on the one hand to keep the diameter of the forceps with optics as small as possible and on the other hand to arrange the optics so that one can look directly into the forceps jaws or into the operating field.

the
According to the invention, this object is achieved in that, in the above-mentioned clip pliers, the observation optics with guide tube runs centrally through a shaft which is longitudinally displaceable for opening and closing the pliers jaws and Gisxal has a straight outlook between the pliers jaws. As a result, compared to known clip forceps, a smaller cross-sectional shape is achieved, which is essential for the patient, and the operating field can now be observed directly.

the

The clip pliers according to / invention is described below with reference to the drawing explained in detail. Show it:

Figure 1 is a side view ^{k of} the clip pliers according to the innovation,

FIG. 2 shows an interrupted longitudinal section through the clip pliers according to FIG. 1 _s

Figure 3 is an enlarged cross-section along the line A-B of Figure 2,

FIG. 4 shows an enlarged cross section along the line C-D in FIG.

The clip pliers consist of the shaft tube of the fine flooding sleeve 2, a pair of pliers jaws 3, 4, a scissor handle 5 and

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an inner optics guide tube 6, which is firmly connected distally to a cylinder ring 7 by soldering or the like. A conical rotating part 8 with its annular collar 9 »and between the latter and the guide tube protrudes proximally into the flooding sleeve 2 6 supports a spacer bush 10. Grub screws 11 and 12 fix parts 2, 6, 8, 9 and 10 to a fixed unit.

The cylinder ring 7 is provided distally with two longitudinal recesses 13 in which the two forceps jaws 3 and 4 store with their legs 3a and 4a, respectively. In a corresponding rectangular ring groove in the cylinder ring 7 and in a fixing ring 14 is inserted snugly into both pliers legs 3a, 4a, which is slotted for the purpose of insertion into the annular groove and which is fixed with two small rivets 15 with the cylinder ring 7 Unit is connected.

The jaws 3, 4 with their legs 3a, 4a are designed to be resilient towards the outside in accordance with the shape shown. In order to ensure a seal in the instrument against escaping gas, eg CO ₂ , from the eau-de-sac, sealing rings 16, 17 are inserted distally and proximally in corresponding annular grooves in parts 7 and 10.

The S _c here handle 5 is composed in a known V / else of a pair of handles 18 and 19 which are interconnected by the hinge pin 20th A leaf spring that is fixed to the handle leg 18 by a knurled screw and the other end with a

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Eye 22 of the handle part 19 hinge-like, that is, articulated, is connected, the pliers always hold in the open position. The pliers grip 18 is fixed by soldering to the flooding sleeve 2 connected.

Handle part 19 engages with a square recess at the free end (Fig. 4) over the extension 23a of the U-shaped lock (slide) 23 and is firmly connected to this by soldering. The inner recess of the lock is chosen so that there is space for the inner tube 6, so that it is encompassed. The outer shape of the lock is adapted to the flooding sleeve 2, which is milled out at 24 to a length corresponding to the stroke of the pliers is. The design of the lock means that the axially movable unit of the pliers (pliers handle 19 with lock 23 and shaft tube 1) impossible.

The scissors handle 5 and the pair of pliers jaws 3, 4, however, need do not lie in the same plane as drawn. It is even advantageous to position the handle about 30 - 4-5 ° in relation to the pair of pliers jaws to be staggered because the surgeon holds the handle on the head when looking through the optics and thus when distracted Handle better.

The optics 25 with the eyepiece funnel 26 and in front of this laterally arranged nozzle 27 (90 ° or obliquely directed backwards) for the connection of a licb & eitkabel does not work with your truncated cone shown in the cone of the conical rotating part 8

409881/0675

OHiGINAL INSPECTiO

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and is firmly connected to the pliers by means of a union nut 28 and a screw 29. The lock is designed accordingly so that the light connection piece gets the desired pull, i.e. the fiber optic cable going to the light projector hinders the doctor as little as possible. For precise adjustment, the spacer sleeve 10 therefore has an acute-angled circumferential groove 30 in which the fixing screw 11 engages. This adjustment option can also be used to bring the pair of jaws 3, 4 described above into the appropriate position for the handle 5,

The optics have a direction of view of 180 °, in order to be able to So to be able to look between the jaws 3, 4. It stands back somewhat distally in the cylinder ring 7 (FIG. 2) to not to be damaged.

The way it works is as follows: Between the two open ones The tantalum clip 31 is inserted into jaws 3, 4. The forceps with optics are then inserted into the abdominal cavity in a known manner and includes the fallopian tubes from an optical point of view. The doctor moves the gripped part 19 against the pressure of the spring in the direction of the forceps grip part 18. The shaft 1 moves distally with respect to the optics, slides over the resilient ones Forceps jaw parts 3, 4 and thereby closes the pair of forceps jaws and thus also the clip 31. The fallopian tube is clamped and the passage in the fallopian tube is blocked. If the doctor no longer exerts any pressure on the forceps grip part 19, the spring presses the handle in its starting position, at the same time the shaft

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slides back and the jaws 3.4 as a result of their Also open the spring action again.

A09881 / 0675

Claims (5)

June 13, 1973 Dr.W./Al. 2? :: 018 Applicant: Richard Wolf GmbH, 7134 Knittlingen, Pforzheimer Street 22 Expectations 1 j forceps for setting tantalum clips to ligate the fallopian tubes in women, consisting of a shaft with a proximal handle for opening and closing a distal clip forceps while observing by means of an optical system, characterized in that the observation optical system (25) with a guide tube (6) extends centrally through an initially open and close the forceps jaws (3, 4) longitudinally displaceable shaft (1) and having a distally directed between the jaws (3 _f 4) Geradausblick. 2. Pliers according to claim 1, characterized in that distal between the shaft and the optic one with the distal end of the guide tube (6) rigidly connected ring cylinder (7) is located, which at the distal end with diametrically opposite longitudinal grooves (13) for receiving the longitudinally immovable, spreading resilient legs (3a, 4a) from the Shank (1) protruding jaws (3, 4) is provided. 3. Pliers according to claim 2, characterized in that the legs (3a, 4a) of the pliers jaws (3, 4) by a snap ring (14) are connected immovably to the ring cylinder (7) in the longitudinal direction. AJ) 95 8 1/0675 OWGlNAL INSPECTED 2? 3 01 8 2 - ir - 4. Pliers according to one of claims 1 to 3, characterized in that that the handle of the forceps (3, 4) consists of a scissors handle, one of which is rigid on the proximal side of the handle (18) with the optics guide tube (6) and one of the shaft (1) on the proximal side surrounding flooding sleeve (2) is connected, while the other is sprung spreading, a lower elongated slot (24) of the flooding sleeve (2) guided through handle part (19) through a U-shaped surrounding the guide tube (6) Fork (23) is connected to the shaft for moving the shaft. 5. Pliers according to one of claims 1 to 4, characterized in that that the plane of the scissors handle (18, 19) to the plane of the pliers jaws (3, 4) assumes an angle between about 30-45 °. ORIGINAL INSPECTK) 409881/0675