DE9405499U1 - Handle for operating surgical tools such as scissors, grasping forceps and grippers - Google Patents

Description

Handle for operating surgical tools such as scissors, forceps and grippers.

State of the art

In the sales catalog of the company WiLo-Medizintechnik, Lothar Wilberg GmbH, Bergweg 15, 74424 Bühlertann, various handles are listed for grasping forceps that are arranged at the distal end of an endoscopic shaft. The handles are characterized by the fact that they can be gripped like household scissors. The front handle part is connected to the shaft. The rear handle part is movable and operates the surgical tool at the distal end of the endoscopic shaft via a rod. The thumb grips through an opening in the rear handle part, and in the front handle part it is the index, middle or ring finger that grips through the opening. With this scissor grip it is not possible to apply a very finely dosed force to operate the surgical tool using the thumb. Furthermore, when the thumb is moved, the finger in the front part of the handle moves in the opposite direction, causing the endoscopic shaft with the surgical tool to be torn.

problem

The invention specified in claim 1 is based on the problem of creating a handle for operating surgical tools, in which a finely dosed force effect on the actuating mechanism for the surgical tools at the distal end of the shaft is possible and tearing of the shaft is excluded.

invention

This problem is solved by the measures of claim 1.

Advantageous effect of the invention

In the specified application, the invention enables a finely dosed effect of force to be applied to the front, movable handle part. This is achieved by using the fingers inserted into the opening of the front handle part to vary the lever arm of the front handle part to the pivot point on the fixed rear handle part, and thus the force can be applied to the surgical tool in a finely dosed manner. Furthermore, the grip of several fingers on the front, movable handle part enables the thumb to be held steady on the rear, rod-shaped handle part that is adapted to the palm of the hand. This means that the shaft is not torn when the surgical tool is operated.

Further development of the invention .!.*..* * *..***·* ""I*"·

An advantageous embodiment of the invention is specified in claim 2.

Thanks to the two tensioned leaf springs, after the front part of the handle has been pushed towards the rear part of the handle, no opposing force has to be applied to return the front part of the handle by the inserted fingers, which also contributes to the stable position of the shaft.

Description of the invention

An embodiment is explained using a figure. The figure shows a handle for operating a surgical tool (not shown in the figure) at the distal end of an endoscopic shaft 15, which is firmly connected to a rotary handle 10 on the rear handle part 2 by a union nut 11. The rotary handle 10 can be rotated step by step via a locking disk 12.

The rear handle part 2 has a H/F connection 9. A front handle part 1 is pivotably mounted on the rear handle part 2 via a bolt 16. A slider 14 is hinged in the front handle part 1. This slider 14 is guided in a sleeve 13 and acts on the mechanism of the surgical tool. The front handle part 1 has a through opening 17 for several fingers of one hand. The catch 7 is hinged on the rear handle part 2 and is tensioned against the locking pin 8 by a spring 6. The front handle part 1 is pushed away from the rear handle part 2 by the two leaf springs 3, 4 and can be held in a certain position by means of the catch 7. The leaf springs 3, 4 are each attached to the front handle part 1 and the rear handle part 2 by the screws 5.

To operate the surgical tool, the rear handle part 2 is placed on the palm of the hand between the thumb and the edge of the hand. The nose 18 prevents the handle from slipping. The thumb operates the catch 7. The middle, ring and little fingers are inserted into the through-opening 17 and press the front handle part 1 against the leaf springs 3, 4 and against the rear handle part 2, whereby the slider 14 is pulled backwards and the surgical tool is moved. If the force of the fingers is less than the spring force of the leaf spring 3, 4, the front handle part 1 is moved forwards and the slider 14 is pushed forwards.

List of reference marks used..' "..· "j*

1 Handle part 2 Handle part 3 Leaf spring 4 Leaf spring 5 screw 6 Feather 7 Rest 8th Locking pin 9 H/F - connection 10 Twist grip 11 Union nut 12 Locking disc 13 Sleeve 14 Slider 15 shaft 16 bolt 17 Reach-through opening 18 Nose

Claims (2)

Protection claims .:. \.: * \ J "j* ' ''/J H' 1. Handle for operating surgical tools such as scissors, grasping forceps and grippers at the distal end of an endoscopic shaft via a slider in the handle which is operatively connected to the surgical tool, consisting of a rear and a front handle part, with a catch on the rear handle part with a locking pin on the front handle part, characterized in that the front handle part (1) is movably arranged on the rear handle part (2) via a bolt (16), the slider (14) is articulated on the front handle part (1), the rear handle part (2) is connected to the endoscopic shaft (15), a compression spring is clamped between the front handle part (1) and the rear handle part (2), the rear handle part (2) is rod-shaped and adapted to the palm between the thumb and the edge of the hand, and the front handle part (1) has a through opening (17) for several fingers of one hand. 2. Handle according to claim 1, characterized in that the compression spring consists of two leaf springs (3, 4) which are connected to one another at their front ends, are stretched between the two handle parts (1, 2) at their rear ends and are fastened to them via screws (5).