Torque wrench for implantable medical devices
AssigneeMedtronic, Inc.
InventorEric John Wengreen
Life of this patent
Estimating the term…
Abstract
A torque wrench for implantable medical devices is disclosed. The torque wrench comprises a first and a second component. The first component has first and second ends with a bore extending between the first and second ends of the first component. The first component includes a plurality of anti-rotation members extending from an inner surface of the bore at the second end of the first component. A second component includes a middle portion having a first and second ends. A drive shaft extends from the first end and a plurality of fingers extends from an exterior surface of the second end. The second component is received in the bore of the first component such that the fingers are interdigitate with the anti-rotation members.
Claims16
An instrument comprising:
- a torque wrench for use with an implantable medical device, the torque wrench comprising:
- a handle having first and second ends and defining a bore extending between the first and second ends, the handle including a plurality of anti-rotation members extending from an inner surface into the bore at the second end of the handle;
- a drive shaft member including a middle portion having a first and second ends, a drive shaft extending from the first end and a plurality of fingers extending from an exterior surface that is located inside the handle, the plurality of fingers interdigitate with the anti-rotation members;
- and
- a compressible member surrounding a middle portion of the drive shaft member, the compressible member being movable between a first configuration in which the plurality of fingers are disengaged from the anti-rotation members and a second configuration in which the plurality of fingers are engaged to the anti-rotation members for transferring torque to the drive shaft.
An instrument comprising:
- a torque wrench for use with an implantable medical device, the torque wrench comprising:
- a handle having first and second ends and defining a bore extending between the first and second ends, the handle including a plurality of anti-rotation members extending from an inner surface into the bore at the second end of the handle;
- a drive shaft member including a middle portion having a first and second ends, a drive shaft extending from the first end and a plurality of fingers extending from an exterior surface that is located inside the handle, the plurality of fingers interdigitate with the anti-rotation members;
- and
- a compressible member surrounding a middle portion of the drive shaft member, the compressible member being movable between a first configuration in which the plurality of fingers are disengaged from the anti-rotation members and a second configuration in which the plurality of fingers are engaged to the anti-rotation members for transferring torque to the drive shaft;
- wherein at least one finger has a first portion, a second portion and a third portion.
Dependencies are inferred from the claim text.