Surgical instrument for minimally invasive surgery

Inventors: Dirk Weitkamp (Waldkirch, DE); Thomas Dunz (Teningen, DE); Lothar Mitzlaff (Lagos, PT); Michael Thoss (Nagold, DE); André Fichtner (Wildberg, DE)

Assignee: Sutter Medizintechnik GmbH

A61B17/2841 A61B2017/00367 A61B2217/007

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Quick Facts

Patent No.: US 12708393
App. No.: 17/959,626
Granted: Aug 18, 2026
Kind: B2

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Abstract

A surgical instrument comprising two jaw portions, at least one of which is rotatably mounted via an axis of rotation at a distal end of a shaft and is connected via a traction cable or a push rod to a gripping portion at the proximal end of the shaft, wherein the jaw formed by the jaw portions is held in an open or closed position by means of a suspension when the instrument is at rest.

Claims (7)

1 . A surgical instrument ( 100 ) comprising two jaw portions ( 102 ), at least one of which is rotatably mounted via an axis of rotation ( 302 ) at a distal end of a shaft ( 104 ) and is connected via a traction cable or a push rod ( 304 ) to a gripping portion ( 106 ) at a proximal end of the shaft ( 104 ), wherein jaws formed by each of the jaw portions ( 102 ) is held in an open or closed position by means of a suspension when the instrument ( 100 ) is at rest, wherein the suspension comprises spring elements ( 306 ) which each connect one of the jaw portions ( 102 ) to the traction cable or the push rod ( 304 ), and, wherein the spring elements ( 306 ) are each connected to the traction cable or the push rod ( 304 ) by at least one of: cohesively ( 308 ) and integrally.

2 . The surgical instrument ( 100 ) according to claim 1 , wherein the spring elements ( 306 ) are each formed integrally with one of the jaw portions ( 102 ).

3 . The surgical instrument ( 100 ) according to claim 1 , wherein the spring elements ( 306 ) each comprise at least a portion of a leaf spring.

4 . The surgical instrument ( 100 ) according to claim 1 , wherein the suspension further comprises at least one spring arm ( 904 ) which is located in the gripping portion ( 106 ).

5 . The surgical instrument ( 100 ) according to claim 1 , wherein the instrument ( 100 ) further comprises at least one of an electrical connector and a rinsing connector ( 108 ) provided at a proximal end of the gripping portion ( 106 ).

6 . The surgical instrument according to claim 1 , wherein the suspension further comprises at least one compression spring ( 906 ) which is located in the gripping portion ( 106 ).

7 . The surgical instrument according to claim 6 , wherein the at least one compression spring is located adjacent to a proximal end of the gripping portion ( 106 ).