Trapezium Implant for Hemiarthroplasty of the Trapeziometacarpal Joint
Summary
The USPTO published patent application US20260096907A1 for a trapezium implant designed for hemiarthroplasty of the thumb carpo-metacarpal joint. The invention by Mark Joseph Warburton includes a saddle-shaped articular surface, a single keel design for press-fit insertion, and an accompanying insertion guide system. Patent applications are published 18 months after filing and are subject to examination before any patent rights are granted.
What changed
The USPTO published patent application US20260096907A1 for a trapezium implant system designed for thumb carpo-metacarpal joint replacement. The application discloses an implant with a saddle-shaped articular surface configured to articulate with the natural base of the first metacarpal, featuring a single keel extending from the mounting surface for press-fit insertion into a prepared channel in the trapezium bone. The invention also includes an insertion guide system with cutting guides and slot guides for surgical preparation and implantation.
Affected parties including medical device manufacturers, orthopedic surgeons, and healthcare institutions should monitor this application's examination status. If granted, the patent would cover the implant design and surgical methods, potentially affecting product development strategies and market entry considerations for competing trapeziometacarpal joint replacement devices.
What to do next
- Monitor for updates on patent examination status
Archived snapshot
Apr 11, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Trapezium Implant for Hemiarthroplasty of the Trapeziometacarpal Joint
Application US20260096907A1 Kind: A1 Apr 09, 2026
Inventors
Mark Joseph Warburton
Abstract
A trapezium implant for replacing the distal articular surface of the trapezium at the carpo-metacarpal joint of the thumb by press fit insertion into a prepared channel in a target trapezium, and an insertion guide system and method for inserting the implant. The implant has a saddle-shaped articular surface configured to articulate with a natural existing base of a first metacarpal, articular surface features mimicking natural trapezium bone anatomy and preserving two centers of rotation of the carpo-metacarpal joint, and a single keel extending from a mounting surface and configured to embed the implant into the thickest area of the target trapezium. The single keel minimizes damage to the trapezium and improves surgical implantation. The target trapezium is prepared using an implant insertion guide system including at least one cutting guide and a slot guide, each of which is releasably securable and configured to receive a cutting device.
CPC Classifications
A61F 2/4606 A61B 17/15 A61B 17/1782 A61F 2002/30116 A61F 2002/30884 A61F 2002/4258
Filing Date
2024-10-04
Application No.
18906515
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