US4467478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Human ligament replacement
Assignee: Individual
•
Filing: 1982-09-20
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Granted: 1984-08-28
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Expires: 2002-09-20
Abstract
Abstract The ligament replacement is obtained by taking a tendon from an animal of appropriate size to function as the substitute for the particular human ligament to be replaced. This tendon is cut to an appropriate length and immersed in a fixing solution such as glutaraldehyde for a sufficient length of time to bind the tissue. The tendon is wrapped in a protective covering and absorbable sutures are passed through the tendon to provide openings. After the tendon is grafted to the human portions formerly connected to the ligament to be replaced and healing has begun, scar tissue can then migrate into the openings left by the absorbable sutures to increase the strength and the securement of the tendon to the bone portions.
Inventors
- 👤 John A. Jurgutis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:05
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
137 words
A method of making a human ligament replacement including the steps of: (a) obtaining an animal tendon of appropriate thickness to function as a substitute for the particular human ligament to be replaced; (b) cutting the tendon to an appropriate length as determined by the ligament to be replaced; (c) immersing the tendon in a fixing solution for a sufficient length of time to bind the tendon tissue; (d) wrapping the tendon with a protective covering; and (e) passing absorbable sutures through the tendon to provide openings therein whereby after the tendon ends are grafted to the human bone portions formerly connected to the ligament being replaced and healing has begun, scar tissue can migrate into the openings left by the absorbable sutures to increase the strength and the securement of the tendon to said bone portions.
Claim 2
Independent Claim
137 words
A method of making a human ligament replacement including the steps of: (a) obtaining an animal tendon of appropriate thickness to function as a substitute for the particular human ligament to be replaced; (b) cutting the tendon to an appropriate length as determined by the ligament to be replaced; (c) immersing the tendon in a fixing solution for a sufficient length of time to bind the tendon tissue; (d) wrapping the tendon with a protective covering; and (e) passing absorbable sutures through the tendon to provide openings therein whereby after the tendon ends are grafted to the human bone portions formerly connected to the ligament being replaced and healing has begun, scar tissue can migrate into the openings left by the absorbable sutures to increase the strength and the securement of the tendon to said bone portions.
Claim 3
Dependent Claim
33 words
The method of claim 1, including the step of forming at least one longitudinal channel through said tendon by passing a wire therethrough prior to immersing of the tendon in said fixing solution.
Claim 4
Dependent Claim
12 words
The method of claim 1, in which said fixing solution is glutaraldehyde.
Claim 5
Dependent Claim
16 words
The method of claim 1, in which said protective covering is a piece of a pericardium.
Claim 6
Dependent Claim
15 words
The method of claim 1, in which said protective covering is a synthetic porous material.
Claim 7
Dependent Claim
88 words
A human ligament replacement comprising, in combination: (a) an animal tendon whose tissue has been bound by immersion in a fixing solution; (b) a protective covering wrapped about said tendon; and (c) absorbable sutures passing longitudinally through the tendon whereby after the tendon ends are grafted to the human bone portions formerly connected to the ligament being replaced and healing has begun, scar tissue can migrate into the openings left by the absorbable sutures to increase the strength and the securement of the tendon to said bone portions.
Claim 8
Dependent Claim
88 words
A human ligament replacement comprising, in combination: (a) an animal tendon whose tissue has been bound by immersion in a fixing solution; (b) a protective covering wrapped about said tendon; and (c) absorbable sutures passing longitudinally through the tendon whereby after the tendon ends are grafted to the human bone portions formerly connected to the ligament being replaced and healing has begun, scar tissue can migrate into the openings left by the absorbable sutures to increase the strength and the securement of the tendon to said bone portions.
Claim 9
Dependent Claim
83 words
A human ligament replacement according to claim 6, in which said sutures extend into end and side areas adjacent to one end of the tendon and pass out end and side areas adjacent to the opposite end of the tendon to leave central side surfaces extending over a substantial longitudinal length of the tendon between its ends free of any incoming or outgoing sutures, said central side surfaces constituting that portion of the tendon passing through a joint area between said bone portions.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-28 | 1988-02-27 | 1988-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-28 | 1992-02-27 | 1992-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-28 | 1996-02-27 | 1996-08-28 | $7700.00 | Window Closed / Lapsed |