US 11,812,978 B2 · Knee balancing system using patient specific instruments

Abstract

A system is disclosed to support installation of a prosthetic joint or a prosthetic component. The system includes at least one sensor to measure a parameter. The system uses one or more patient specific instruments in conjunction with a tensor to make one or more bone cuts. The patient specific instruments and tensor make the bone cuts such that an installed prosthetic joint is aligned, balanced, loaded correctly, and positioned optimally for performance and reliability. The use of the tensor simplifies the workflow required when using the patient specific instruments. In one embodiment, the patient specific instruments are bone cutting jigs configured for the patient anatomy.

Claims10

Dependent claims

A surgical orthopedic system comprising:

one or more patient specific instruments (PSI) formed for a patient, the patient specific instruments being formed using a 3D model of at least one bone of the patient;
a tensor having a distraction mechanism and a tilting mechanism wherein a knee joint of the patient is configured to be balanced using the tensor with a leg of the patient placed in flexion greater than 5 degrees and less than 80 degrees, and wherein a drill guide is configured to couple to the tensor, the tensor including one or more sensors;
a computer configured to receive measurement data from the sensors, and
a display coupled to the computer configured to display the measurement data.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

17/069,781Filed 13 Oct 2020 · us provisional application

Priority

15 Oct 2019

Published

US 2021/0259713 A126 Aug 2021

Granted

14 Nov 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification19 codes

A61B 17/155
For preparing bone for knee prosthesis: cutting femur
A61B 17/1764
Specially adapted for particular parts of the body: for the knee
A61B 17/025
For holding wounds open, e.g. retractors; Tractors: joint distractors
A61B 17/157
For preparing bone for knee prosthesis: cutting tibia

Knee balancing system using patient specific instruments

Life of this patent

Knee balancing system using patient specific instruments

Life of this patent

Abstract

Claims10