IP Library › Granted Patent US 12,220,137
Granted Patent B2
US 12,220,137 · App. 17/725,800 · Granted Feb 11, 2025

Cut guide for arthroplasty procedures

Inventors: Daniel P. Bonny (Fremont, CA); Joel Zuhars (Fremont, CA); Stephen M. Howell (Fremont, CA); Timothy Pack (Fremont, CA); Kyle Kuznik (Fremont, CA); Babak Kianmajd (Fremont, CA)
Assignee: Think Surgical, Inc.
A61B17/1764A61B17/155A61B17/157A61B34/10A61B17/1675
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Quick Facts
Patent No.
US 12,220,137
App. No.
17/725,800
Granted
Feb 11, 2025
Kind
B2
Abstract

Systems and methods for creating cuts on a bone are provided utilizing one or more cutting guides assembled to a plurality of bone pins, where the bone pins are inserted on the bone coincident with one or more virtual pin planes defined relative to one or more of the cuts. Alignment guides are also disclosed herein that aid in the creation of pilot holes for receiving a cutting block in a desired position and orientation (POSE). An articulating surgical device actively positions the bone pins coincident with the virtual plane to ensure the cutting guides, when assembled to the pins, aligns one or more guide slots in the desired POSE to create the cuts.

Claims (32)

1. A cut guide for an arthroplasty procedure, comprising:

a first portion comprising a first surface, wherein at least a portion of the first surface has a first length and a first width;

a second portion comprising:

a second surface located relative to the first surface to define a space between the first surface and the second surface, wherein at least a portion of the second surface has a second length and a second width; and

an opening for a cutting tool; and

wherein the space has a height equal to the distance between the first surface and the second surface, a length parallel to the first length and the second length, the space length being greater than the height, and wherein the space is configured to receive a portion of a bone pin.

2. The cut guide of claim 1 further comprising a fastener for changing the height of the space.

3. The cut guide of claim 2 wherein the fastener is configured to move the first portion with respect to the second portion.

4. The cut guide of claim 3 wherein the first portion and second portion each comprise an aperture configured to receive a portion of the fastener.

5. The cut guide of claim 4 wherein the aperture of the second portion is threaded to interact with threads located on the fastener.

6. The cut guide of claim 2 wherein the fastener comprises a knob for rotating the fastener.

7. The cut guide of claim 1 wherein the opening is a guide slot.

8. The cut guide of claim 1 wherein the opening is a guide hole.

9. The cut guide of claim 8 wherein the guide portion comprises two or more guide holes.

10. The cut guide of claim 1 wherein the width of the space is configured to receive a portion of a first bone pin and a portion of a second bone pin.

11. The cut guide of claim 1 wherein the space is configured to receive the portion of the bone pin at any location within the space.

12. The cut guide of claim 1 wherein the space comprises a plane configured to align parallel with a virtual plane having a pre-defined location with respect to a bone.

13. The cut guide of claim 1 wherein the space has a fixed height, wherein the fixed height is adapted to receive the portion of the bone pin that is received in the space.

14. The cut guide of claim 1 wherein the first portion comprises a top surface and the second portion comprises a bottom surface, wherein the top surface and bottom surface comprise grooves.

15. The cut guide of claim 1 wherein the arthroplasty procedure is knee arthroplasty.

16. A system, comprising:

one or more bone pins; and

a cut guide, comprising:

a first portion comprising a first surface, wherein at least a portion of the first surface has a first length and a first width;

a second portion comprising:

a second surface located relative to the first surface to define a space between the first surface and the second surface, wherein at least a portion of the second surface has a second length and a second width; and

an opening for a cutting tool;

wherein the space has a height equal to the distance between the first surface and the second surface, a length parallel to the first length and the second length, the space length being greater than the height, and wherein the space is configured to receive a portion of the one or more bone pins, respectively.

17. The system of claim 16 wherein the cut guide further comprises a fastener for changing the height of the space to clamp the cut guide to the portion of the one or more bone pins, respectively.

18. The system of claim 16 wherein the one or more bone pins are configured to be inserted into a bone coincident with a virtual pin plane have a pre-defined location with respect to the bone.

19. The system of claim 18 wherein the space comprises a plane that aligns parallel with the virtual pin plane when the cut guide is coupled to the one or more bone pins.

20. The system of claim 18 further comprising a robotic device for aligning or maintaining alignment of the one or more bone pins coincident with the virtual plane.

Assignments (2)
SECURITY INTEREST Recorded Jun 12, 2026
From: THINK SURGICAL, INC.
To: SYMBIOTIC CAPITAL AGENCY LLC, AS COLLATERAL AGENT
Reel/Frame 075736/0843 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 21, 2022
From: BONNY, DANIEL P.; ZUHARS, JOEL; HOWELL, STEPHEN M.; PACK, TIMOTHY; KUZNIK, KYLE; KIANMAJD, BABAK
To: THINK SURGICAL, INC.
Reel/Frame 059664/0830 →
Continuity (4)
Continuation In Part 15778811
Provisional Application 62349562 · Jun 13, 2016
Provisional Application 62259487 · Nov 24, 2015
Related Publication 20220249107A1 · Aug 11, 2022
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