| 摘要 |
A medical instrument has a shaft with a longitudinal axis, a jaw head on a distal end of the shaft having two jaw parts, at least one of the jaw parts being pivotable about a pivot axis extending transversely to the longitudinal axis, the pivotable jaw part having a wheel portion with toothing mounted about the pivot axis, at least one actuation element having a distal end portion with toothing that meshes with the toothing of the wheel portion such that movement of the actuation element along the longitudinal axis pivots the pivotable jaw part, control elements at a proximal end of the shaft controlling movement of the actuation element, said distal end portion with toothing is flexible, one of the jaws having a hollow space arranged distally to the pivot axis, wherein the distal end portion comes in or out of the hollow space when moving the actuation element. |
| 主权项 |
1. A medical instrument, comprising
a shaft having a distal end, a proximal end and a longitudinal axis, a jaw head arranged on said distal end of said shaft, said jaw head having two jaw parts, at least one of said two jaw parts being pivotable about a pivot axis extending transversely to said shaft axis, said at least one pivotable jaw part having a wheel portion mounted about said pivot axis, said wheel portion having a toothing, at least one actuation element for pivoting said at least one pivotable jaw part, said actuation element having a distal end portion provided with a toothing, said toothing of said actuation element meshes with said toothing of said wheel portion in such a way that an axial movement of said actuation element along said longitudinal axis of said shaft pivots said pivotable jaw part, and control elements arranged at said proximal end of said shaft, said control elements controlling a movement of said at least one actuation element, wherein
said distal end portion of said actuation element provided with said toothing is made flexible, andat least one of said two jaws having a hollow space arranged distally to said pivot axis, and whereinsaid flexible distal end portion of said actuation elements comes in or comes out of said hollow space when moving said actuation element along said shaft axis to distal and to proximal respectively. |
