US20160100848A1
Active / In Force
US
⏱️ 7.9 years remaining
Auxiliary jig for trapeziometacarpal joint arthroplasty
Assignee: National Cheng Kung University
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Filing: 2014-10-09
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Granted: —
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Expires: 2034-10-09
Abstract
Abstract An auxiliary jig for a trapeziometacarpal joint arthroplasty is disclosed. The jig has a body, two grip portions, and a positioning portion. The positioning portion has a plurality of positioning holes so that pins can be fixed on the first metacarpal bone through the positioning holes. The jig can provide accurate positioning operations for cutting and drilling during a trapeziometacarpal joint arthroplasty.
Inventors
- 👤 Wei-Jr Lin
- 👤 I-Ming Jou
- 👤 Che-Chia Hsu
- 👤 Fong-Chin Su
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:20
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; A61B17/17; A61B17/1739; A61B17/14; A61B17/15; A61B17/1782; A61B2017/1782
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
88 words
1 . An auxiliary jig for trapeziometacarpal joint arthroplasty, comprising: a body having an inner surface for abutting against a metacarpal bone and an outer surface opposite the inner surface; two grip portions provided on two sides of the outer surface of the body, respectively; and a positioning portion extended from an end of the body, the positioning portion having a plurality of positioning holes, and the body being fixed on the metacarpal bone by fixing a plurality of pins on the metacarpal bone through the positioning holes.
Claim 2
Dependent Claim
88 words
1 . An auxiliary jig for trapeziometacarpal joint arthroplasty, comprising: a body having an inner surface for abutting against a metacarpal bone and an outer surface opposite the inner surface; two grip portions provided on two sides of the outer surface of the body, respectively; and a positioning portion extended from an end of the body, the positioning portion having a plurality of positioning holes, and the body being fixed on the metacarpal bone by fixing a plurality of pins on the metacarpal bone through the positioning holes.
Claim 3
Dependent Claim
21 words
2 . The auxiliary jig according to claim 1 , wherein each of the grip portions has a concave curved surface.
Claim 4
Dependent Claim
25 words
3 . The auxiliary jig according to claim 1 , wherein the positioning holes are spaced from each other and arranged in a straight line.
Claim 5
Dependent Claim
18 words
4 . The auxiliary jig according to claim 1 , wherein the positioning portion has a tapered end.
Claim 6
Dependent Claim
40 words
5 . The auxiliary jig according to claim 1 , wherein the body is formed with a first linear through hole, and a blade inserts to remove an articular surface of the metacarpal bone through the first linear through hole.
Claim 7
Dependent Claim
35 words
6 . The auxiliary jig according to claim 5 , wherein the body is formed with a second linear through hole, and the first linear through hole is perpendicular to the second linear through hole.
Claim 8
Dependent Claim
29 words
7 . The auxiliary jig according to claim 1 , further comprising: a fin extended from the inner surface for abutting against an articular surface of the metacarpal bone.
Claim 9
Dependent Claim
17 words
8 . The auxiliary jig according to claim 7 , wherein the fin has a tapered end.
Claim 10
Dependent Claim
27 words
9 . The auxiliary jig according to claim 8 , wherein the fin has a third linear through hole close to the inner surface of the body.
Claim 11
Dependent Claim
49 words
10 . The auxiliary jig according to claim 1 , further comprising: a drilling positioning plate projected from a distal end of the body, and the drilling positioning plate is formed with at least one through hole, so that a drill drills the metacarpal bone through the through hole.
References Cited (Backward Citations)
US5454816A
Cited
US8118811B2
Cited
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