Endoscopic instrument which can be bent
AssigneeKarl Storz GmbH & Co. KG
InventorsChristophe Lafond, Alain Tanguy, Uwe Bacher
Life of this patent
Estimating the term…
Abstract
An endoscopic instrument has an external tube and a hollow cylinder coaxially extending along a longitudinal axis and actuatable to move axially in opposite directions to rotate a distal end of the instrument provided with an engaging element between angular positions. The distal end actuated by the outer tube is rotatable about a pin having an axis of rotation which is spaced radially from the longitudinal axis as another pin formed on and extending radially from the cylinder is guided along an arcuate groove provided on the distal end of the instrument.
Claims17
An endoscopic instrument extending along a longitudinal axis and having a proximal end, comprising:
- an inner hollow sleeve extending along the longitudinal axis;
- a rod traversing the inner sleeve and having an engaging element mounted on a distal end of the rod;
- an outer sleeve coaxial with and spaced radially outwardly from the inner sleeve;
- an actuator simultaneously displacing the outer and inner sleeves in opposite axial directions;
- and
- a pivot extending along the distal end of the rod and rotatable with the engaging element about a rotation axis extending perpendicular to the longitudinal axis and spaced radially therefrom between a first position, wherein the engaging element is aligned with the inner and outer sleeves, and at least one second position, wherein the engaging element is inclined with respect to the sleeves upon axial displacement of the of the outer and inner sleeves.
A surgical instrument comprising:
- an inner sleeve extending along a longitudinal axis and having a radially extending pin;
- an outer sleeve coaxial with and spaced radially apart from the inner sleeve, the inner and outer sleeves being displaceable in opposite axial directions upon applying an external force;
- a pivot having a tool holder, the pivot being axially displaceable with the outer sleeve and rotatable thereon to pivot about a pivot axis extending perpendicular to and radially offset from the longitudinal axis between a first position, wherein the pivot and the sleeves are axially aligned, and at least one second position, wherein the pivot is inclined relative to the sleeves;
- and
- a cam between the tool holder and the inner sleeve to provide the angular displacement of the pivot as the sleeves move in opposite axial directions.
Dependencies are inferred from the claim text.