Insert sensing system with medial-lateral shims and method therefor

Patent metadata

Field	Value
Publication number	US-11534316-B2
Application number	US-201816122764-A
Country	US
Kind code	B2
Filing date	Sep 5, 2018
Priority date	Sep 14, 2017
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

An orthopedic system to monitor a parameter related to the muscular-skeletal system is disclosed. The orthopedic system includes electronic circuitry, at least one sensor, and a computer to receive measurement data in real-time. The orthopedic system comprises a first plurality of shims of a first type, a second plurality of a second type, a measurement module, and the computer. The measurement module houses the electronic circuitry and at least one sensor. The measurement module is adapted to be used with the first plurality of shims and the second plurality of shims. The measurement module has a medial surface that differs from a lateral surface by shape, size, or contour.

First claim

What is claimed is:

1. A prosthetic knee component system comprising:
a measurement module having a first side and a second side configured to couple to (i) a first shim on the first side and (ii) a second shim on the second side;
the first shim, wherein the first shim has a first medial articular surface and a first lateral articular surface, wherein a first plurality of columns of the first shim are configured to couple to the first medial articular surface and a second plurality of columns of the first shim are configured to couple to the first lateral articular surface; and
the second shim, wherein the second shim has a second medial articular surface and a second lateral articular surface, wherein a third plurality of columns of the second shim are configured to couple to the second medial articular surface and a fourth plurality of columns of the second shim are configured to couple to the second lateral articular surface;
wherein the measurement module is configured to measure loading applied to at least one of the first shim and the second shim; and
wherein the measurement module comprises:
a first medial surface on the first side of the measurement module,
a first lateral surface on the first side of the measurement module,
a first load sensor,
a second load sensor;
a first raised portion protruding outwardly from the first medial surface, wherein the first raised portion is aligned with the first load sensor and configured to align with a column of the first plurality of columns of the first shim; and
a second raised portion protruding outwardly from the first lateral surface, wherein the second raised portion is aligned with the second load sensor and configured to align with a column of the second plurality of columns of the first shim.

2. The prosthetic knee component system of claim 1 , wherein the first shim and the second shim are non-symmetrical.

3. The prosthetic knee component system of claim 1 ,
wherein the first medial articular surface differs in area or contour from the first lateral articular surface of the first shim; and
wherein the second medial articular surface differs in area or contour from the second lateral articular surface.

4. The prosthetic knee component system of claim 1 , wherein the first shim includes a first structural webbing coupling a first sidewall of the first shim to the first plurality of columns of the first shim or the second plurality of columns of the first shim; and
wherein the second shim includes a second structural webbing coupling a second sidewall of the second shim to the third plurality of columns of the second shim or the fourth plurality of columns of the second shim.

5. The prosthetic knee component system of claim 4 ,
wherein the first structural webbing extends between a plurality of columns of the first plurality of columns of the first shim, and wherein the first structural webbing extends between a plurality of columns of the second plurality of columns of the first shim; or
wherein the second structural webbing extends between a plurality of columns of the third plurality of columns of the second shim, and wherein the second structural webbing couples between a plurality of columns of the fourth plurality of columns of the second shim.

6. The prosthetic knee component system of claim 1 , further including a third shim and a fourth shim, wherein the third shim has a different height from the first shim and the fourth shim has a different height from the second shim.

7. The prosthetic knee component system of claim 1 ,
wherein the measurement module further includes a post extending outward from a first side surface;
wherein the first shim includes a first slot;
wherein the second shim includes a second slot;
wherein the post extends outward in a direction transverse to (i) a first direction in which the first side faces and (ii) a second direction in which the second side faces; and
wherein the post is configured to be inserted into at least one of:
the first slot to couple the measurement module to the first shim, and the second slot to couple the measurement module to the second shim.

8. The prosthetic knee component system of claim 1 , wherein the measurement module further comprises:
a third load sensor,
a fourth load sensor;
a third raised portion protruding outwardly from the first medial surface, wherein the third raised portion is aligned with the third load sensor; and
a fourth raised portion protruding outwardly from the first lateral surface, wherein the fourth raised portion is aligned with the fourth load sensor.

9. The prosthetic knee component system of claim 8 , wherein the measurement module further comprises a peripheral raised region protruding outwardly from the first medial surface and extending along an edge of the first medial surface, wherein the peripheral raised region extends from the first raised portion to the third raised portion.

10. The prosthetic knee component system of claim 1 , wherein the measurement module further comprises
a second medial surface on the second side of the measurement module,
a second lateral surface on the second side of the measurement module,
a third raised portion protruding outwardly from the second medial surface, wherein the third raised portion is aligned with the first load sensor; and
a fourth raised portion protruding outwardly from the second lateral surface, wherein the fourth raised portion is aligned with the second load sensor;
wherein each of the first medial surface and the first lateral surface is on the first side of the measurement module, and each of the second medial surface and the second lateral surface is on the second side of the measurement module.

11. A prosthetic knee component system comprising:
a first shim having a first medial articular surface and a first lateral articular surface, wherein each of a first plurality of columns is coupled to the first medial articular surface and each of a second plurality of columns is coupled to the first lateral articular surface, and wherein the first medial articular surface differs in area or contour from the first lateral articular surface;
a second shim having a second medial articular surface and a second lateral articular surface, wherein each of a third Plurality of columns is coupled to the second medial articular surface and each of a fourth Plurality of columns is coupled to the second lateral articular surface, wherein the second medial articular surface differs in area or contour from the second lateral articular surface, and wherein the second shim is different from the first shim;
a measurement module having a first side medial surface, a first side lateral surface, a first load sensor configured to measure load applied to the first side medial surface, and a second load sensor configured to measure load applied to the first side lateral surface, wherein each of the first side medial surface and the first side lateral surface is on a first side of the measurement module;
wherein each column of the first plurality of columns is configured to align with a corresponding raised portion of the first side medial surface, and each column of the second plurality of columns is configured to align with a corresponding raised portion of the first side lateral surface;
wherein a first raised portion of the corresponding raised portions of the first side medial surface projects outwardly from the first side medial surface and is aligned with the first load sensor, and a second raised portion of the corresponding raised portions of the first side lateral surface projects outwardly from the first side lateral surface and is aligned with the second load sensor;

Assignees

• Orthosensor Inc

Inventors

• Goodchild Gordon
• Ortiz Ryan
• Chase Andrew
• Chilton Iii Robert

Classifications

• A61F2/38

  for elbows or knees · CPC title

• A61F2002/4632

  using computer-controlled surgery, e.g. robotic surgery · CPC title

• A61B2034/2048

  using an accelerometer or inertia sensor · CPC title

• A61F2002/4666

  for measuring force, pressure or mechanical tension · CPC title

• A61F2/4684

  Trial or dummy prostheses · CPC title