Surgical punching instrument

Details Surgical punching instrument Surgical punching instrument

2005-11-17

2010-02-02

Nguyen, Anhtuan T (Department: 3731)

Surgery

Instruments

Cutting, puncturing or piercing

C606S083000

Reexamination Certificate

active

07655020

ABSTRACT:
A surgical punching instrument is provided with a fixed handle (14) attached to a punching bar (2) and with an actuating lever (16), which is mounted thereon in a pivotingly movable manner and which is connected via a short lever arm (17) to a punching slide (1), which is in turn under the action of a restoring spring (23). The punching slide (1) lies with its flat sliding surface (3) on a flat guiding surface (4) of the punching bar (2) over its entire length and is guided at same in an axially movable manner by means of guide elements (5through8), which have a T-shaped profile, engage one another in a positive-locking manner and are detachable by longitudinal displacement. To make it possible to remove the restoring spring, which is not arranged between the handle and the actuating lever, from the punching bar in a simple manner, for example, for cleaning purposes, and to bring it into connection with same again, the restoring spring (23), designed as a compression coil spring, is arranged and guided at least partially in a guide groove (24) of the sliding surface of the punching slide (1) by means of a guide shaft (22, 22/1), which passes axially through it. A distal stop face (27), which is rigidly connected to the punching slide (1), is provided as a step bearing for the rear spring end of the restoring spring (23), and the restoring spring (23) is in contact by its front end with a proximal stop face (30) of the punching slide (1) when the punching slide (1) is removed, and with a proximal stop face (26) of the punching bar (2) when the punching slide (1) is mounted ready for operation.

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