# US 11,992,226 B2 · Femoral neck resection jig

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- Number: US 11,992,226 B2
- Document ID: US11992226B2
- Status: Granted
- Kind: B2
- Application number: 17/251,938
- Filed: 2019-06-24
- Published: 2021-08-26
- Granted: 2024-05-28
- Earliest claimed: 2018-06-26
- Assignees: Depuy Ireland Unlimited Company
- Applicants: Depuy Ireland Unlimited Company
- Inventors: David Beverland; Sarah Bushell; Jason Naylor
- Web page: https://patentgrep.com/patent/US11992226B2

## CPC

- A61B 17/15: Guides therefor
- A61B 90/08: {Accessories or related features not otherwise provided for}
- A61B 5/1072: {measuring distances on the body, e.g. measuring length, height or thickness (A61B5/1076 takes precedence)}
- A61B 2090/061: {for measuring dimensions, e.g. length}
- A61B 2090/0811: {for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

The invention provides a surgical apparatus for performing a controlled resection of the neck of a femur during a hip replacement procedure, the surgical apparatus comprising: a body portion. The body portion comprises a frame that is mountable on a femoral head of the femur to position the body portion with respect to a centre of the femoral head. The body portion also includes a resection guide for indicating a position of a resection plane on the femoral neck, and an arm extending from the frame and including markings for reading off a femoral head offset. The apparatus also includes a connector for mounting the body portion on an intramedullary rod located in an intramedullary canal of the femur, and for slidably receiving the arm. The connector includes a pointer. The femoral head offset is indicated by reading the position of the pointer relative to the markings on the arm.

## Claims

### Claim 1

A surgical apparatus for performing a controlled resection of the neck of a femur during a hip replacement procedure, the surgical apparatus comprising:
a body portion comprising:
a frame comprising an aperture, wherein the aperture is dimensioned for receiving a femoral head of the femur to position the body portion with respect to a centre of the femoral head;
a resection guide for indicating a position of a resection plane on the femoral neck, and
an arm extending from the frame and including markings for reading off a femoral head offset,
a connector for mounting the body portion on an intramedullary rod located in an intramedullary canal of the femur, and for slidably receiving the arm, wherein the connector includes a pointer, the femoral head offset being indicated by reading the position of the pointer relative to the markings on the arm.

### Claim 2 (depends on 1)

The surgical apparatus of claim 1, wherein the connector comprises a slot configured for slidable receipt of the arm.

### Claim 3 (depends on 1)

The surgical apparatus of claim 1, wherein the connector further comprises a locking mechanism for locking the connector at a location along the arm.

### Claim 4 (depends on 1)

The surgical apparatus of claim 1, in which the connector includes a viewing window through which the markings on the arm can be viewed.

### Claim 5 (depends on 1)

The surgical apparatus of claim 1, in which the connector further includes a cutting slot.

### Claim 6 (depends on 5)

The surgical apparatus of claim 5, in which the connector has a proximal end and a distal end, and wherein the cutting slot extends in a proximal direction from the distal end.

### Claim 7 (depends on 1)

The surgical apparatus of claim 1, wherein the resection guide includes a guide slot or guide surface for indicating a position of a resection plane on the femoral neck.

### Claim 8 (depends on 7)

The surgical apparatus of claim 7, wherein the guide slot is a cutting slot for receiving a blade of a cutting device during said resection of the neck.

### Claim 9 (depends on 1)

The surgical apparatus of claim 1, wherein the frame includes a pin hole configured for removable receipt of a bone pin for removably mounting the frame on the femoral head.