Back to results
US 8,298,240 B2Granted
Remotely adjustable tissue displacement device
AssigneeSynthes USA, LLC
InventorsLukas Giger, Hans Flueckiger, Hugo Flueckiger
Life of this patent
Estimating the term…
Abstract
The invention relates to an apparatus for displacing tissue within the body, wherein the apparatus includes two or more attachment members selectively displaceable with respect to each other via a driving member. The driving member preferably is rotatable and is caused to rotate by manually activating an actuator by applying a depressing force from outside the body.
Claims28
An expandable device for moving tissue, the device comprising:
- a first elongated member having a threaded portion;
- a second elongated member operably associated with a driving member, the driving member having a threaded portion constructed and arranged to engage the threaded portion of the first elongated member;
- a displacement mechanism including a lever;
- and
- a clutch mechanism associated with the displacement mechanism, wherein the lever extends laterally away from an outer surface of the clutch mechanism, and the driving member, the clutch mechanism having a first condition wherein upon movement of the lever for rotation of the displacement mechanism in a first direction, the driving member rotates in the first direction, the clutch mechanism having a second condition wherein upon movement of the lever for rotation of the displacement mechanism in a second direction different from the first direction, the driving member remains stationary without rotating.
2 more elements
A bone displacement apparatus comprising:
- a first attachment member;
- a second attachment member;
- a driven member coupled to the first bone attachment member;
- a rotatable driving member coupled to the second bone attachment member;
- screw threads engaged between the driving member and the driven member to move the driven member axially relative to the second bone attachment member for displacement of the bone attachment members upon rotation of the driving member in a displacement direction;
- a manually rotatable actuator including a lever laterally extending away from an outside surface of the clutch mechanism;
- and
- a clutch mechanism operative between the actuator and the driving member to advance the driving member in the displacement direction upon rotation of the actuator back and forth in opposite directions using the lever, the clutch being interposed radially between the actuator and the driving member in a position axially overlying the screw threads positioned between the driving member and the driven member.
5 more elements
A bone displacement apparatus comprising:
- a first bone attachment member;
- a second bone attachment member having a driving member;
- an actuator;
- a clutch mechanism operatively associated with the driving member to advance the driving member in a displacement direction, the clutch mechanism including
- a plurality of rollers;
- a housing containing the rollers and the driving member, the housing having a converging inner wall portion;
- a first condition wherein upon rotation of the housing in a first direction, the rollers are wedged between the housing and the driving member, and the driving member rotates in the first direction;
- and
- a second condition wherein upon rotation of the housing in a second direction different from the first direction, the driving member remains stationary without rotating;
- wherein the actuator includes a displaceable lever, the lever constructed and arranged to rotate the housing in the first direction upon displacement of the lever in a first displacement direction, the lever further constructed and arranged to rotate the housing in the second direction upon displacement of the lever in a second displacement direction.
7 more elements
Dependencies are inferred from the claim text.