Patent ID: 6752821
Filing Date: 2004-06-22
Classification: A61B

Abstract:
Pincers (1) for endoscopy surgery, comprising a terminal structure (3) to which is affixed a proximal end segment (15) of a tube (2) constituting a stem of the pincers, further a stationary handle (14) affixed to the terminal structure (3) and a displaceable handle (12) which rests on said stationary handle and which is fitted on an axis of the tube (2) at a proximal side of the terminal structure (3) with a swivel seat (11), further comprising a pincers head (4) which bears pincer arms (9) and which is both rotatably connected to the distal end of the tube (2) and is axially connected to it in detachable, geometrically locking manner (6, 7), further comprising a rod (8) which drives the pincers arms (9) and which in the pincers' assembled state runs through the tube (2) and detachably rests by its distal end in the swivel seat (11), further comprising an axially clear rotary connection (16, 18) between the rod (8) and the tube (2) in the proximal end segment (15) of the tube (2), wherein, in the pincers' assembled state, the rod (8), when being in the region of the rotary connection (16, 18), will exhibit at least one engagement zone (21) having an axially parallel, rotationally asymmetric cross-section, and in that a slider (17) rests in a transverse clearance (16) of the tube (2), said slider being fitted with an elongated slot (18) which admits and passes the rod (8) and which, in a passage zone (19), freely passes a maximum-diameter circular cross-section of the proximal segment of the rod (8) and which, in a gripping zone (20) that is offset in a sliding direction, encloses in an irrotationally locking manner the engagement zone (21) of the rod (8).