Patent ID: 7621932
Filing Date: 2009-11-24
Classification: A61B

Abstract:
1. A surgical punching instrument, comprising: a fixed handle; a tubular guide part, said fixed handle being attached to said tubular guide part, said tubular guide part defining a cylindrical guide part cavity; an actuating lever mounted on said fixed handle in a pivotingly movable manner, said actuating lever having a short lever arm; a plunger, said actuating lever being connected to said plunger via said short lever arm; a compression spring; a punching bar having a rearward mounting part, said rearward mounting part having an at least partially cylindrical guide section, said punching bar being guided in said guide part rotatably via said guide section, said punching bar having a ring shoulder, said ring shoulder being located in said guide part, said rearward mounting part being mounted in said cylindrical guide part cavity of said guide part; a mobile punching slide, said plunger engaging said compression spring, said compression spring resetting said mobile punching slide, said plunger being detachably connected to a rear end of said punching slide such that said plunger moves in an axial direction in said guide part, said plunger compressing said compression spring when said plunger moves in said axial direction, said cylindrical guide part cavity having a dimension equal to or greater than said rearward mounting part such that said rearward mounting part is received by said guide part in a direction opposite a direction of actuation of said mobile punching slide, whereby said mobile punching slide is disconnected from said guide part in said direction of actuation of said mobile punching slide punching slide, wherein said punching bar and said punching slide have guide elements, said guide elements of said punching slide detachably engaging said guide elements of said punching bar such that said guide elements of said punching slide form a positive-lock connection with said guide elements of said punching slide, said punching slide being axially movable along said punching bar, said punching slide and said punching bar having bent portions, said bent portions being located in front of said guide part, wherein said punching slide and said punching bar extend radially offset in relation to an axis of said guide part; and a spring-loaded locking lever defining an axial stop, said locking lever extending radially through a guide slot defined by said guide part such that said locking lever detachably engages said ring shoulder in said cylindrical cavity of said guide part, whereby said ring shoulder is lockable in a plurality of rotated positions, said locking lever locking said mounting part of said punching bar when said locking lever engages said ring shoulder.