IP Library › Granted Patent US 12708374

Granted Patent B2

US 12708374 · App. 18/508,735 · Granted Aug 18, 2026

Computer-assisted tibia resection

Inventors: Joseph Madier Vigneux (Montreal, CA); Sharif Sharifzadeh (Montreal, CA); Sarathkumar Kumaraiah (Montreal, CA); Karine Duval (Montreal, CA); Louis-Philippe Amiot (Montreal, CA); Alex Bouchard (Montreal, CA); Anne Cabral (Montreal, CA)

Assignee: ORTHOSOFT ULC

A61B17/157 A61B17/1675 A61B34/10 A61B2034/101 A61B2034/2048

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Quick Facts

Patent No.: US 12708374
App. No.: 18/508,735
Granted: Aug 18, 2026
Kind: B2

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Abstract

A resection system for the proximal tibia may include an implantable device having at least a first sensor configured to collect first data regarding one or more characteristics of a bone of a patient, wherein the implantable device is configured for implantation in a medullary canal of the tibia. The resection system may also include a cutting tool, a second sensor configured to collect second data regarding at least an angle of the cutting tool and a controller. The controller can be configured to: determine a first position of the implantable device from the first data, determine an orientation of a mechanical axis of the tibia based at least in part on the first data; and determine an orientation for the cutting tool relative to the tibia based upon the second data and at least one of the orientation of the mechanical axis and the first data.

Claims (39)

1 . A system for positioning a tool in surgery relative to a bone, the system comprising:

an implantable device having at least a first sensor configured to collect first data regarding one or more characteristics of a bone of a patient, wherein the implantable device including the at least first sensor is configured for implantation in a medullary canal of the tibia with the at least first sensor in the medullary canal;

the tool;

a second sensor configured to collect second data regarding at least an angle of the tool;

an adjustment mechanism configured to orient the tool relative to the bone;

an attachment member coupled with the implantable device when the implantable device is implanted in the medullary canal of the bone, wherein the adjustment mechanism is coupled with the attachment member; and

a controller, communicatively coupled to the first sensor of the implantable device, the adjustment mechanism and the second sensor, the controller configured to:

determine a first position of the implantable device from the first data;

determine an orientation of a landmark of the bone based at least in part on the first data;

determine an orientation for the tool relative to the bone based upon the second data and at least one of the orientation of the landmark and the first data; and

orient the tool via the adjustment mechanism.

2 . The system of claim 1 , wherein the tool comprises at least one of a cut guide having at least one cut slot or a sharp configured to perform the resection of the proximal end portion of the bone.

3 . The system of claim 1 , wherein the adjustment mechanism is configured to pivot the tool about at least two axes of rotation.

4 . The system of claim 3 , wherein the adjustment mechanism is configured to translate the tool relative to the bone to adjust a proximal-distal depth of the resection of the proximal end portion of the bone.

5 . The system of claim 1 , wherein the adjustment mechanism includes at least one arcuate shaped worm track configured to be driven by a worm, wherein the worm is driven by an actuator.

6 . The system of claim 1 , wherein the adjustment mechanism is configured to provide two or more tracks upon which the cutting tool can move to perform the resection of the proximal end portion of the bone.

7 . A system for positioning a tool relative to a bone, the system comprising:

an attachment member configured to couple with the bone;

an adjustment mechanism configured to couple with the attachment member and having one or more portions moveable relative to the attachment member in at least two degrees of freedom of rotation, the adjustment mechanism including at least one arcuate shaped worm track configured to be driven by a worm gear, wherein the worm gear is driven by an actuator;

a tool secured to the one or more portions of the adjustment mechanism and movable about at least two axes of rotation relative to the bone;

a sensor configured to collect data regarding at least an angle of the tool; and

a controller, communicatively coupled to the sensor, the controller configured to:

determine a position of the bone;

determine an orientation of the tool relative to the bone based at least in part on the data; and

orient, with the adjustment mechanism, the tool relative to the bone upon the orientation of the tool, the position of the bone and the data.

8 . The system of claim 7 , wherein the adjustment mechanism is configured to translate the tool relative to the bone to adjust a depth of the tool relative to the bone.

9 . The system of claim 7 , wherein the at least one arcuate track is rotatable about an axis defined by the attachment member.

10 . The system of claim 9 , wherein a main body of the adjustment mechanism is moveably received on the attachment member and is moveable along the attachment member to adjust a position of the adjustment mechanism relative to the bone.

11 . The system of claim 7 , wherein the tool is a cut guide including an aperture configured to receive an attachment for mounting the sensor to the cut guide.

12 . A system for positioning a tool in surgery relative to a bone, the system comprising:

an implantable device having a housing including at least a first sensor configured to collect first data regarding one or more characteristics of a bone of a patient, wherein the housing is configured for implantation in a medullary canal of the tibia;