# US 2019/0167434 A1 · Version-replicating instrument and orthopaedic surgical procedure for using the same to implant a revision hip prosthesis

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2019/0167434 A1
- Document ID: US20190167434A1
- Status: Published application
- Kind: A1
- Application number: 16/269,057
- Filed: 2019-02-06
- Published: 2019-06-06
- Earliest claimed: 2011-04-06
- Assignees: DePuy Synthes Products, Inc.
- Applicants: Depuy Synthes Products, Inc.
- Inventors: Rodney E. Satterthwaite; William Muhammad; Jonathan E. Carr
- Web page: https://patentgrep.com/patent/US20190167434A1

## CPC

- A61F 2/30734: {Modular inserts, sleeves or augments, e.g. placed on proximal part of stem for fixation purposes or wedges for bridging a bone defect}
- A61B 17/1637: {Hollow drills or saws producing a curved cut, e.g. cylindrical (A61B10/025, A61B17/1695 take precedence)}
- A61B 17/164: {intramedullary}
- A61B 17/1659: {Surgical rasps, files, planes, or scrapers}
- A61F 2/36: Femoral heads {; Femoral endoprostheses}
- A61F 2/3662: {Femoral shafts}
- A61F 2/4607: {of hip femoral endoprostheses}
- A61F 2/4637: {for connecting or disconnecting two parts of a prosthesis}
- A61F 2/4657: {Measuring instruments used for implanting artificial joints (for surgical instruments A61B90/06)}
- A61F 2/4684: {Trial or dummy prostheses}
- A61B 17/1668: {for the upper femur (A61B17/164 takes precedence)}
- A61B 2017/00464: {for use with different instruments}
- A61B 2090/062: {penetration depth}
- A61F 2002/30235: {tubular, e.g. sleeves}
- A61F 2002/30332: {Conically- or frustoconically-shaped protrusion and recess}
- A61F 2002/30507: {using a threaded locking member, e.g. a locking screw or a set screw}
- A61F 2002/30515: {using a locking wedge or block}
- A61F 2002/3054: {about a connection axis or implantation axis for selecting any one of a plurality of radial orientations between two modular parts, e.g. Morse taper connections, at discrete positions, angular positions or continuous positions}
- A61F 2002/30616: {Sets comprising a plurality of prosthetic parts of different sizes or orientations}
- A61F 2002/30617: {Visible markings for adjusting, locating or measuring}
- A61F 2002/30738: {Sleeves}
- A61F 2002/3625: {Necks}
- A61F 2002/3652: {Connections of necks to shafts}
- A61F 2002/3674: {Connections of proximal parts to distal parts}
- A61F 2002/4622: {having the shape of a forceps or a clamp}
- A61F 2002/4627: {with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument}
- A61F 2002/4629: {connected to the endoprosthesis or implant via a threaded connection}
- A61F 2002/4662: {for measuring penetration depth}
- A61F 2002/4668: {for measuring angles}
- A61F 2002/4681: {by applying mechanical shocks, e.g. by hammering}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A modular femoral prosthesis for use during performance of a hip revision procedure includes a proximal body component, a distal stem component, and a locking bolt. Surgical instruments and methods for use in implanting such a modular femoral prosthesis are disclosed.

## Claims

### Claim 1

A method of performing a surgical procedure to implant an orthopaedic hip prosthesis, comprising:
implanting a distal stem component into an intramedullary canal of a patient's femur,
installing a proximal trial instrument to the proximal end of the implanted distal stem component,
rotating the proximal trial instrument relative to the implanted distal stem component so as to position the proximal trial instrument in a selected version,
locking the proximal trial instrument in the selected version,
uninstalling the proximal trial instrument from the implanted distal stem component with the proximal trial instrument locked in the selected version,
installing a version-replicating instrument to the proximal end of the implanted distal stem component, and
installing the proximal trial instrument on the version-replicating instrument with the proximal trial instrument being locked in the selected version.

### Claim 2 (depends on 1)

The method of claim 1, wherein:
the proximal trial instrument comprises a modular proximal instrument having a discrete trial shaft and a discrete trial neck, and
installing the proximal trial instrument on the implanted distal stem component comprises: (i) installing the trial shaft to the proximal end of the implanted distal stem component, and (ii) installing the trial neck on the trial shaft.

### Claim 3 (depends on 2)

The method of claim 2, wherein the trial neck is installed on the trial shaft prior to installation of the trial shaft to the implanted distal stem component.

### Claim 4 (depends on 2)

The method of claim 2, wherein the trial neck is installed on the trial shaft after the trial shaft is installed to the implanted distal stem component.

### Claim 5 (depends on 1)

The method of claim 1, wherein:
the proximal trial instrument comprises a rotatable locking screw having a number of threads formed in a distal end thereof, and
installing the proximal trial instrument to the implanted distal stem component comprises threading the threads of the locking screw into a threaded bore of the implanted distal stem component.

### Claim 6 (depends on 1)

The method of claim 1, further comprising:
installing a proximal body component on the version-replicating instrument, and
rotating the proximal body component so that a version of the proximal body component matches the selected version of the proximal trial instrument.

### Claim 7 (depends on 6)

The method of claim 6, wherein the proximal body component is installed on the version-replicating instrument prior to installation of the trial shaft on the version-replicating instrument.

### Claim 8 (depends on 1)

The method of claim 1, wherein:
the proximal trial instrument has an alignment key formed in an outer surface thereof,
the implanted distal stem component further has a keyway formed in a superior surface thereof, and
installing the proximal trial instrument to the proximal end of the implanted distal stem component comprises positioning the alignment key of the proximal trial instrument in the keyway of the implanted distal stem component.

### Claim 9 (depends on 8)

The method of claim 8, wherein:
the version-replicating instrument has an alignment key formed in an outer surface thereof, and
installing the version-replicating instrument to the proximal end of the implanted distal stem component comprises positioning the alignment key of the version-replicating instrument in the keyway of the implanted distal stem component.

### Claim 10 (depends on 8)

The method of claim 8, wherein:
the version-replicating instrument has an alignment slot formed in the proximal end thereof, and
installing the proximal trial instrument on the version-replicating instrument comprises positioning the alignment key of the proximal trial instrument in the alignment slot of the version-replicating instrument.