Medical instrument
AssigneeKarl Storz GmbH & Co. KG
InventorUwe Bacher
Life of this patent
Estimating the term…
Abstract
A medical instrument has a shaft. The shaft has an outer shaft and an inner shaft. The outer shaft encloses the inner shaft. The medical instrument further has an actuator for rotating the inner shaft about a longitudinal axis relative to the outer shaft, arranged at a proximal end region of the shaft. The medical instrument has at least two tappet elements for transferring a rotary movement of the actuator to the inner shaft, which are engaged interchangeably with the inner shaft for transferring the rotary movement of the actuator to the inner shaft. The tappet elements reach through peripherally limited openings in a proximal end region of the outer shaft, which openings are offset with respect to one another in the longitudinal direction.
Claims22
A medical instrument, comprising:
- a shaft having an outer shaft and an inner shaft, said outer shaft enclosing said inner shaft, said outer shaft having a longitudinal axis and a proximal end region,
- an actuator for rotating said inner shaft about said longitudinal axis relative to said outer shaft, said actuator being arranged at said proximal end region of said outer shaft and being rotatable about said longitudinal axis,
- at least two tappet elements operatively connected with said actuator for transfer-ring a rotary movement of said actuator to said inner shaft, said at least two tappet elements being engaged alternatingly with respect to one another with said inner shaft for transferring said rotary movement of said actuator to said inner shaft, said at least two tappet elements reaching through peripherally limited openings in said proximal end region of said outer shaft, said openings being offset with respect to one another in direction of said longitudinal axis.
A medical instrument, comprising:
- a shaft having an outer shaft and an inner shaft, said outer shaft enclosing said inner shaft, said outer shaft having a longitudinal axis and a proximal end region,
- an actuator for rotating said inner shaft about said longitudinal axis relative to said outer shaft, said actuator being arranged at said proximal end region of said outer shaft,
- at least two tappet elements operatively connected with said actuator for transferring a rotary movement of said actuator to said inner shaft, said at least two tappet elements being engaged alternatingly with respect to one another with said inner shaft for transferring said rotary movement of said actuator to said inner shaft, said at least two tappet elements reaching through peripherally limited openings in said proximal end region of said outer shaft, said openings being offset with respect to one another in direction of said longitudinal axis,
- said outer shaft having control cams adjacent to said openings of said outer shaft for said at least two tappet elements, said control cams serve for alternate disengagement and engagement of said at least two tappet elements with said inner shaft,
- said control cams having a full circumference and are distanced radially from said inner shaft in sections which are not immediately adjacent to said openings such that said at least two tappet elements are disengaged from said inner shaft.
Dependencies are inferred from the claim text.