# US 2019/0167448 A1 · Orthopaedic surgical system for determining joint forces of a patient's knee joint

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- Number: US 2019/0167448 A1
- Document ID: US20190167448A1
- Status: Published application
- Kind: A1
- Application number: 16/269,041
- Filed: 2019-02-06
- Published: 2019-06-06
- Earliest claimed: 2012-03-31
- Assignees: Depuy Ireland Unlimited Company
- Applicants: Depuy Ireland Unlimited Company
- Inventors: Jason T. Sherman; Michael J. Rock; Daren L. Deffenbaugh; Kyle S. Moore
- Web page: https://patentgrep.com/patent/US20190167448A1

## CPC

- A61F 2/4684: {Trial or dummy prostheses}
- A61B 17/025: {Joint distractors}
- A61F 2/4657: {Measuring instruments used for implanting artificial joints (for surgical instruments A61B90/06)}
- A61B 2017/0268: {for the knee}
- A61B 2090/061: {for measuring dimensions, e.g. length}
- A61B 2090/064: {for measuring force, pressure or mechanical tension}
- A61B 2090/065: {for measuring contact or contact pressure}
- A61F 2002/4661: {for measuring thickness}
- A61F 2002/4666: {for measuring force, pressure or mechanical tension}
- 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

An orthopaedic surgical system includes a sensor module for determining the joint force of a patient's knee joint and an adaptor for coupling various tibial trialing components to the sensor module. The sensor module includes a tibial paddle to which the adaptor is configured to couple. The adaptor and tibial paddle include structures that control the orientation at which the adaptor is attachable to the tibial paddle. Some tibial trialing components may be positioned over the adaptor in a mobile orientation that facilities rotation of the tibial trialing component relative to the tibial paddle or a fixed orientation that restricts the rotation of the tibial trialing component.

## Claims

### Claim 1

An adaptor for coupling a tibial trialing component to a tibial paddle of a sensor module, the adaptor comprising:
a central hub having a top side and a bottom side,
a plurality of lower retainer clips sized to be received in an aperture to the tibial paddle, each lower retainer clip comprising a stem extending downwardly from the central hub and a lip extending outwardly from a distal end of the corresponding stem,
a plurality of upper retainer clips sized such that the upper retainer clips are not receivable within the aperture of the tibial paddle, each upper retainer clip comprising a stem extending upwardly from the central hub and a lip extending outwardly from a distal end of the corresponding stem,
a first alignment tab extending downwardly from the central hub, and
a second alignment tab extending downwardly from the central hub, the second alignment tab having a length greater than the length of the first alignment tab.