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Medical instrument with a flexible toothed belt

  • US 9,848,897 B2
  • Filed: 12/19/2014
  • Issued: 12/26/2017
  • Est. Priority Date: 12/19/2013
  • Status: Active Grant
First Claim
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1. A medical instrument, comprising:

  • a shaft having a distal end, a proximal end and a longitudinal shaft 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 at least one actuation element having a distal end portion provided with a toothing, said toothing of said at least one actuation element meshes with said toothing of said wheel portion in such a way that an axial movement of said at least one 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 at least one actuation element provided with said toothing is made flexible;

    wherein at least one of said two jaw parts comprises therein a hollow space arranged distally to said pivot axis; and

    wherein said flexible distal end portion of said at least one actuation element comes in or comes out of said hollow space when moving said at least one actuation element along said shaft axis distally and proximally, respectively, wherein said flexible distal end portion of said at least one actuation element is flexed as said at least one pivotable jaw part is pivoted.

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