Assessment of tension between bone anchors

Patent metadata

Field	Value
Publication number	US-11883243-B2
Application number	US-202017087281-A
Country	US
Kind code	B2
Filing date	Nov 2, 2020
Priority date	Oct 31, 2019
Publication date	Jan 30, 2024
Grant date	Jan 30, 2024

Abstract

A system for interconnecting bones includes an implantable member configured to be mechanically coupled to a first bone, configured to be mechanically coupled to a second bone, configured to provide substantially no resistance to compression of the implantable member, configured to support a tensile load within a predetermined range of tensile loads extending from a first load to a second load, configured to have a predetermined elasticity within the range of tensile loads, configured to have a first characteristic at the first load, and configured to have a second characteristic at the second load. The system also includes a means for measuring the first characteristic and the second characteristic. And the system includes a means for calculating a tension between the first bone and the second bone based on the first characteristic and the second characteristic.

First claim

What is claimed is:

1. A system for interconnecting bones, the system comprising:
an implantable member configured to be mechanically coupled to a first bone, configured to be mechanically coupled to a second bone, configured to provide substantially no resistance to compression of the implantable member, configured to support a tensile load within a predetermined range of tensile loads extending from a first load to a second load, configured to have a predetermined elasticity within the range of tensile loads, configured to have a first width at the first load, the first width being generally transverse to the first load at the first load, and configured to have a second width at the second load, the second width being generally transverse to the second load at the second load;
a means for measuring the first width and the second width; and
a means for calculating a tension between the first bone and the second bone based on the first width and the second width.

2. The system of claim 1 , wherein the implantable member comprises a tether band.

3. The system of claim 2 , wherein the means for calculating comprises a smart phone.

4. The system of claim 3 , wherein the means for measuring comprises an optical detector.

5. The system of claim 1 , wherein the means for calculating comprises a means for calculating the tension between the first bone and the second bone based on a Poisson Effect.

6. A system for interconnecting bones, the system comprising:
a first bone anchor;
a second bone anchor;
an elastically deformable coupling connecting the first bone anchor to the second bone anchor, having a length extending between the first bone anchor and the second bone anchor, and having a width being generally transverse to the length;
an optical device configured to observe the width and to generate data based thereon; and
a computing device configured to calculate a tension between the first bone anchor and the second bone anchor based on the data.

7. The system of claim 6 , wherein the optical device is configured to observe at least two dimensions of the coupling and to generate the data based thereon.

8. The system of claim 7 , wherein the computing device is configured to calculate the tension between the first bone anchor and the second bone anchor based on a Poisson Effect.

9. The system of claim 7 , wherein the coupling comprises a tether band.

10. The system of claim 9 , wherein the computing device is configured to calculate the tension between the first bone anchor and the second bone anchor based on a Poisson Effect.

11. The system of claim 9 , wherein the computing device comprises a smart phone.

12. The system of claim 11 , wherein the computing device is configured to calculate the tension between the first bone anchor and the second bone anchor based on a Poisson Effect.

13. The system of claim 6 , wherein the computing device comprises a smart phone.

Assignees

• Orthopediatrics Corp

Inventors

• Prygoski Matthew
• Detlefsen Richard
• Tozakoglou Evangelos
• Daniluck John V

Classifications

• A61B90/06 Primary

  Measuring instruments not otherwise provided for · CPC title

• A61B17/0401

  Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors (A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811) · CPC title

• A61B17/7053

  with parts attached to bones or to each other by flexible wires, straps, sutures or cables · CPC title

• A61B2017/564

  Methods for bone or joint treatment · CPC title

• A61B2090/064

  for measuring force, pressure or mechanical tension · CPC title