US3924630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of controlled release fluid swellable sutures
Assignee: Ethicon Inc
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Filing: 1974-11-18
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Granted: 1975-12-09
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Expires: 1994-11-18
Abstract
Abstract A system is provided for preserving controlled-release properties in a needle-suture combination in which a fluidswellable suture is held by swaging in a recess in the blunt end of a needle. A controlled excess cross-sectional area is provided within the swaged portion of the needle recess to permit swelling of the suture end without excessive change in pressure in the areas where the suture end is pressed by the swaged inner walls of the recess.
Inventors
- 👤 Diann J Walldorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:40
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/04; A61B17/06; A61B17/06166; A61B17/06004
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
98 words
In a needle-suture combination comprising a needle with a sharp end and a blunt end and a fluid-swellable suture inserted at one end into a recess in said blunt end and held therein by swaging, the improvement comprising the dimensioning and configuration of said recess, said recess being provided within the swaged portion thereof with a cross-sectional area equivalent to from about 150% to about 250% of the cross-sectional area of the suture end therein when said suture is in a non-swollen state so that a suture pull-out value of from about 3 to 26 ounces is obtained.
Claim 2
Dependent Claim
98 words
In a needle-suture combination comprising a needle with a sharp end and a blunt end and a fluid-swellable suture inserted at one end into a recess in said blunt end and held therein by swaging, the improvement comprising the dimensioning and configuration of said recess, said recess being provided within the swaged portion thereof with a cross-sectional area equivalent to from about 150% to about 250% of the cross-sectional area of the suture end therein when said suture is in a non-swollen state so that a suture pull-out value of from about 3 to 26 ounces is obtained.
Claim 3
Dependent Claim
24 words
A needle-suture combination of claim 1 wherein said suture comprises a water-swellable collagen selected from the group consisting of natural collagen and extruded collagen.
Claim 4
Dependent Claim
20 words
A needle-suture combination of claim 2 wherein said combinations are hermetically sealed in a package containing an aqueous alcohol solution.
Claim 5
Dependent Claim
24 words
A needle-suture combination of claim 3 wherein said solution comprises about 90% by volume of isopropyl alcohol and about 10% by volume of Water.
Claim 6
Dependent Claim
21 words
A needle-suture combination of claim 2 wherein the diameter of the dry suture is from about 0.2 to about 0.6 millimeters.
Claim 7
Dependent Claim
28 words
A needle-suture combination of claim 1 wherein the suture pull-out value is from about 3 ounces to about 26 ounces when the suture is in a non-swollen state.
Claim 8
Dependent Claim
28 words
A needle-suture combination of claim 1 wherein the suture pull-out value is from about 3 ounces to about 26 ounces when the suture is in a swollen state.
Claim 9
Dependent Claim
29 words
A needle-suture combination of claim 1 wherein said suture end is compressed within said swaged recess to from about 64% to about 91% of its original dry state diameter.
Claim 10
Dependent Claim
17 words
The needle-suture combination of claim 1 wherein said recess is a drilled hole or a closed channel.
Claim 11
Dependent Claim
126 words
In a method for making a needle-suture combination in which a needle having a sharp end and a blunt end is attached at its blunt end to a suture comprising a fluid swellable material by the insertion of one tip of said suture into a recess in said blunt end followed by the swaging of said blunt end and the distortion of said recess to bring at least a portion of the inner surface of said recess into tight engagement with said suture tip, the improvement comprising dimensioning said recess to provide after swaging a cross-sectional area in the swaged portion thereof equivalent to from about 150% to about 250% of the cross-sectional area of said suture tip when said suture is in a dry state.
Claim 12
Dependent Claim
126 words
In a method for making a needle-suture combination in which a needle having a sharp end and a blunt end is attached at its blunt end to a suture comprising a fluid swellable material by the insertion of one tip of said suture into a recess in said blunt end followed by the swaging of said blunt end and the distortion of said recess to bring at least a portion of the inner surface of said recess into tight engagement with said suture tip, the improvement comprising dimensioning said recess to provide after swaging a cross-sectional area in the swaged portion thereof equivalent to from about 150% to about 250% of the cross-sectional area of said suture tip when said suture is in a dry state.
Claim 13
Dependent Claim
11 words
A method of claim 10 wherein said swaging is flat swaging.
Claim 14
Dependent Claim
12 words
A method of claim 10 wherein said suture comprises a collagenous material.
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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |