Back to results
US 6,913,613 B2Granted
Surgical instrument for minimally invasive surgical interventions
AssigneeTuebingen Scientific Surgical Products OHG
InventorsKnut M. Schwarz, Marc O. Schurr, Gerhard F. Buesz
Life of this patent
Estimating the term…
Abstract
A surgical instrument for minimally invasive surgery includes a hollow shank with an actuating device arranged at the one end thereof and a bendable instrument tip arranged at the other end. The instrument tip is bendable toward the shank and carries a mouth part. The surgical instrument also includes a gear mechanism which transforms at least a movement of said actuating device by an operator into a rotation of said mouth part according to a predetermined transmission ratio in relation to the actuating movement.
Claims14
A surgical instrument, comprising:
- a hollow shank having a proximal end and a distal end;
- an actuating device arranged at said proximal end of said hollow shank and movable in a first actuating movement direction;
- an instrument tip arranged at the distal end of said hollow shank, said instrument tip being pivotably connected relative to said hollow shank by a pivoting axis so that said instrument tip is pivotable about the pivoting axis toward said hollow shank;
- a mouth part having a longitudinal axis and rotatably arranged on the instrument tip such that said mouth part is rotatable relative to said instrument tip about said longitudinal axis;
- and
- a gear mechanism connected between said actuating device and said instrument tip for rotating said mouth part in response to a movement of said actuating device in the first actuating movement direction in accordance with a first transmission ratio, wherein said first actuating movement is in response to an operator movement of said actuating device, wherein
- said actuation device comprises a handle having a grip end fixed thereto and a trigger relatively moveably connected to said handle, and said actuation device further comprising a joint mechanism formed at the proximal end of said hollow shank, wherein said grip end is twistably and swivelably connected to said hollow shank by said joint mechanism such that said grip end is twistable about a twisting axis and swivelable about a swivelling axis that is separate from said from said twisting axis.
4 more elements
A surgical instrument, comprising:
- a hollow shank having a proximal end and a distal end;
- an actuating device arranged at said proximal end of said hollow shank and movable in a first actuating movement direction;
- an instrument tip arranged at the distal end of said hollow shank, said instrument tip being pivotably connected relative to said hollow shank by a pivoting axis so that said instrument tip is pivotable about the pivoting axis toward said hollow shank;
- a mouth part having a longitudinal axis and rotatably arranged on the instrument tip such that said mouth part is rotatable relative to said instrument tip about said longitudinal axis;
- a gear mechanism connected between said actuating device and said instrument tip for rotating said mouth part in response to a movement of said actuating device in the first actuating movement direction in accordance with a first transmission ratio, wherein said first actuating movement is in response to an operator movement of said actuating device;
- an actuating element movably connected to said actuating device, said actuating element being actuatable independently of the relative position of said actuating device to said hollow shank, said actuating element being operatively connected with said mouth part for a decoupled opening and closing of said mouth part in response to a movement of said actuating element relative to said actuating device, wherein said gear mechanism comprises a torsion-resistant flexible shaft supported in said hollow shank and connected to said mouth part for transmitting a moment of rotation to said mouth part for rotating said mouth part in said seat, and an actuating pull guided inside of said flexible shaft, said actuating element being operatively connected to said actuating pull;
- and
- an eccentric rod connected to said actuating element, first and second pinions in meshed engagement arranged on said bearing head, the eccentric rod being adapted to drive the first and second pinions, an elongation rod eccentrically supported on said second pinion, a rocker arm arranged at said proximal end of said hollow shank and to which said mouth part actuating pull is connected such that the movement of said elongation rod is deflected by said rocker arm into a movement of said mouth part actuating pull.
5 more elements
Dependencies are inferred from the claim text.