Back to results
US 12,465,377 B2Granted
Talar implant
AssigneeWright Medical Technology, Inc.
InventorDavid G. Reynolds
Life of this patent
Estimating the term…
Abstract
Provided is a prosthesis for ankle arthroplasty including a talar dome component configured to be attached to a talus bone. Also provided is a guide instrument for guiding a reamer to prepare a talus to receive the talar dome component.
Claims5
A guide comprising:
- a main body having a first end and a second end;
- a pin-receiving portion provided at the first end and configured to slide over one or more guide pins placed in a bone, wherein the guide is registered at a desired position relative to a resected flat surface of the bone when the pin-receiving portion is slid over the one or more guide pins;
- wherein the main body is configured as a bridge extending from the first end to the second end over the resected flat surface of the bone and rests against the resected flat surface of the bone at the second end and defines a space under the main body between the main body and the bone wherein the second end of the main body comprises a footing that rests against the bone to help stabilize the main body's seating on the bone;
- a reamer guide portion provided on the main body, wherein the reamer guide portion comprises an outer wall defining a channel for receiving and guiding a shaft of a reamer at a first angle so that a bladed end of the shaft of the reamer would cut into the bone at a second angle that is orthogonal to the first angle, wherein the channel is open to the space under the main body;
- and
- a hole provided on the main body between the reamer guide portion and the pin-receiving portion, wherein the hole is sufficiently large to pass a bladed end of the shaft of the reamer through and into the space under the main body;
- wherein the outer wall of the reamer guide portion comprises a slot that connects the channel to the hole so that the shaft of the reamer that is placed in the hole can pass through the slot and be received in the channel;
- and
- wherein the first angle and the second angle are measured with respect to the resected flat surface of the bone.
6 more elements
A guide comprising:
- a main body having a first end and a second end;
- a pin-receiving portion provided at the first end and configured to slide over one or more guide pins placed in a bone, wherein the guide is registered at a desired position relative to a resected flat surface of the bone when the pin-receiving portion is slid over the one or more guide pins;
- wherein the main body is configured like a bridge extending from the first end to the second end over the resected flat surface of the bone and rests against the resected flat surface of the bone at the second end and defines a space under the main body between the main body and the bone;
- a reamer guide portion provided on the main body, wherein the reamer guide portion comprises an outer wall defining a channel for receiving and guiding a shaft of a reamer at a first angle so that a bladed end of the shaft of the reamer would cut into the bone at a second angle that is orthogonal to the first angle, wherein the channel is open to the space under the main body;
- and
- a hole provided on the main body between the reamer guide portion and the pin-receiving portion, wherein the hole is sufficiently large to pass a bladed end of the shaft of the reamer through and into the space under the main body;
- wherein the outer wall of the reamer guide portion comprises a slot that connects the channel to the hole so that the shaft of the reamer that is placed in the hole can pass through the slot and be received in the channel;
- and
- wherein the first angle and the second angle are measured with respect to the resected flat surface of the bone;
- further comprising a saw blade guide slot provided between the reamer guide portion and the pin-receiving portion to guide a saw blade for cutting into the bone at a third angle that is measured with respect to the resected flat surface of the bone.
7 more elements
Dependencies are inferred from the claim text.