Balancing device for arthroplasty and methods for use
AssigneeXpandortho, Inc.
InventorsDarryl D. D'Lima, Clifford W. Colwell
Life of this patent
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Abstract
A joint balancing insert with an actuated mechanism is for balancing a joint during a joint surgery is disclosed. The joint balancing insert includes a first plate, a second plate and an actuator there between. The second plate includes an integrated mounting portion for mounting a cutting block used to guide surgical cuts of the joint during the joint surgery. Various configurations of the integrated mounting portion may be implemented in the insert to provide for mounting various types of cutting blocks, such as cutting blocks for tibial cuts, femoral cuts, and distal femoral cuts.
Claims16
An insert for balancing a joint during repair of the joint, the insert comprising:
- a first plate configured to interface with a bone structure of a joint;
- a second plate elastically coupled with the first plate and including
- a plate portion spaced apart from the first plate and configured to interface with an opposing bone structure of the joint,
- a transition portion extending from the plate portion protruding beyond the perimeter of the first plate, and
- a mounting portion extending from the transition portion in a transverse direction relative to the plate portion in the direction of the first plate;
- and
- an actuator located between the first plate and the plate portion and configured to apply a force to the first plate and to the plate portion.
An insert for balancing a joint during repair of the joint, the insert comprising:
- a top plate configured to interface with a bone structure of a joint;
- a bottom plate including
- a bottom portion spaced apart from the top plate and configured to interface with an opposing bone structure of the joint,
- a bottom transition portion extending from the bottom portion in the general direction of the bottom portion, and
- a bottom mounting portion extending from the bottom transition portion towards and beyond the top plate;
- and
- a pneumatic actuator located between the top plate and the bottom portion, the pneumatic actuator including a bellows made of an inflatable material, the bellows configured to inflate and pneumatically apply the force to the first plate and to the plate portion.
The insert of claim 15, wherein the bottom plate includes a mounting guide, the mounting guide including a flange protruding from the bottom mounting portion, the insert further comprising an adjustment device affixed to the bottom mounting portion for adjusting a placement of a guide pin.
An insert for balancing a joint during repair of the joint, the insert comprising:
- a top plate configured to interface with a bone structure of a joint;
- a bottom plate including
- a bottom portion spaced apart from the top plate and configured to interface with an opposing bone structure of the joint,
- a bottom transition portion extending from the bottom portion in the general direction of the bottom portion, the bottom transition portion including a first transition leg extending from the bottom portion and a second transition leg extending from the bottom portion, and
- a bottom mounting portion extending from the bottom transition portion towards and beyond the top plate and including
- a first leg extending upward from the first transition leg,
- a second leg extending upward from second transition leg and joined to the first leg at the distal end of the bottom mounting portion,
- a first mounting portion protruding from the first leg, and
- a second mounting portion protruding from the second leg;
- and
- an actuator located between the top plate and the bottom portion for distributing a force to the top plate and to the bottom portion.
Dependencies are inferred from the claim text.