DE8711051U1 - Biopsy and foreign body forceps - Google Patents

Description

Biopsy and fromdkbrperzango Qeechtreibungt

The invention relates to a biopsy and foreign body forceps. These instruments are intended to be inserted into a body cavity using an endoscope in order to take tissue samples or remove foreign bodies.

For this purpose, the forceps of this type are equipped with a jaw, which consists of a rigid and a movable jaw part and forms the tip of the instrument, which is round or oval in cross-section. The movable jaw part is connected in an articulated manner to a pull rod, which is guided longitudinally in the spiral or shaft part of the instrument and can be operated by hand at the end of the shaft. By closing the initially open jaw, tissue particles or foreign bodies inside an organ can now be grasped and removed from the endoscopic body opening by pulling the forceps back. *

Known biopsy and foreign body forceps with a jaw forming their tip, consisting of a rigid and a movable jaw part, are designed in such a way that the opening of the two jaw parts points forward, i.e. at the

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The tip of the instrument gapes open. This type of training is advantageous for certain invasive surgical procedures for removing tissue parts and, in appropriate cases, for removing foreign bodies. However, it has been shown that if the position of the foreign body or the removal point is unfavorable, it is extremely difficult, if not impossible, to reach the exact removal point, especially if it is in the most peripheral area of a narrow body cavity. In such cases, even with skillful handling, a point located on the outer edge of a narrow body cavity can be difficult or impossible to reach.

The aim of the invention is therefore to create an instrument of this type which does not have this disadvantage but is also suitable for reaching very unfavorably located points in a body cavity for sampling purposes.

To solve this problem, it is now proposed in accordance with the invention for a biopsy and foreign body forceps with a jaw forming _the tip that the opening of the two jaw parts faces backwards, whereby the movable jaw part is pivotally mounted in a closed head part forming the tip of the instrument and the fixed jaw part is formed by a recess which closes backwards on the head part and into which the movable jaw part engages when closed.

According to a further proposal, it is advantageous if the flattened depression forming the rigid jaw part has a flat recess with a depth of about one third

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tal to half of the cross-section of the instrument head part. In a variation of this, the flattened depression also has a recess that is slightly concave towards the bottom.

According to a further feature, the movable jaw part is attached to an edge pointing downwards and backwards.

Furthermore, it is intended that the movable jaw part mounted in the head part is connected to a lifting arm guided in the head part by means of a joint bracket with a spiral

or shaft part longitudinally adjustable pulling rod

j is articulated.

Further features and special features are shown in the drawing.

\ nung ischematically shown execution example to

which is explained in more detail below.

In the drawing, 1 indicates the spiral,

\ which can also be replaced by a rigid shaft. The

[ Instrument head 2 contains the Leger 7 .for the

possible jaw part 5 , u/elchee in geechloasener and

a is shown in dash-dotted line in the open position.

In the closed position, the movable haul part

\ 5 with the rigid jaw part 3 which in the

flattened recess k . The movable jaw part 5 can be sharpened in the area of the edge 6,

A lever arm 8 is also formed on the movable jaw 5, which carries the hinge pin 10, by means of which the lever arm B is connected in an articulated manner to the hinge bracket 9. This in turn is connected by means of the hinge

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Spiral 1 or» the shaft length adjustable

is.

By moving the forceps 11, the opening of the movable main part 5 can be controlled, ■so that after inserting the forceps through the endoscope it is possible to reach the place where the extraction is to be carried out.

should be, after opening the pliers and briefly pulling them back

·■■ hen the batch to be removed - or the

To grasp object 2u and hold it by clamps.

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Claims (1)

Biopsy and foreign body forceps Expectations 1. Biopsy and foreign body forceps with a jaw forming the tip of the &bgr; inatumenta, consisting of a spar and a movable jaw part, characterized by that the opening of the two jaw parts (3, 5) points backwards, the movable jaw part (5) being pivotally mounted in a closed head part (2) forming the tip of the instrument and the rigid jaw part (3) being formed by a flattened recess (O) adjoining the head part (2) to the rear, into which the movable jaw part (5) engages in the closed position. 2. Pliers according to claim 1, characterized in that that the flattened recess (4) forming the rigid jaw part (3) is a flat recess of approximately one third to one half of the cross-section of the instrument head part (?.). 3. Pliers according to claim 1, characterized in that that the "flattened" recess (4) forming the rigid jaw part (3) forms a recess which is slightly concave towards the bottom and which is approximately one third to one half of the cross-section of the instrument head part (2). A2 - 7S23 62894 *» ¹ ^ ¹ =- ³ «&lgr;»* 13.08.87. 17:14 I * . &ogr; ti >>> »J 1-165 A/s „rt. below _g eri=htetan K ₃ Ht, (6) ₅ . ^ _rrrr /;r: _n r _(a , .itfl. a ^"""»■ ^h · "^* or Soh«ftt.il (D lSnglv«eohl«bUDh (11) gelangkig angebracht i»t.