Patent JPS5987113A successfully refreshed from Google Patents.
US4246904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical suture derived from segmented polyether-ester block copolymers
Assignee: Wyeth Holdings LLC
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Filing: 1979-01-29
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Granted: 1981-01-27
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Expires: 1999-01-29
Abstract
Abstract A synthetic nonabsorbable surgical suture compound of segmented polyether--ester block copolymers is disclosed.
Inventors
- 👤 Donald S. Kaplan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:41
CPC Classifications
A; A61; A61L; A61L17/00; A61L17/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
176 words
A annealed non-absorbable monofilament sterile surgical suture or ligature having an attached needle comprising a polymeric block (A) consisting of a polyalkylene ether of the formula ##STR10## having a number average molecular weight of from about 500-3000 wherein R is a straight or branched chain alkyl group of from about 2 to 10 carbon atoms and R 2 is 1,4-phenylene or cyclohexylene and n is the number of repeating units; and a polymeric block (B) which is the reaction product of an aromatic dicarboxylic acid or a cycloaliphatic acid, and a short chain aliphatic or cycloaliphatic diol, having the formula ##STR11## wherein R 1 is a straight or branched chain alkyl group of from about 2 to 10 carbon atoms or a cyclic group having the formula ##STR12## and R 2 is 1,4-phenylene or cyclohexylene, said block (B) comprising from about 30% to 95% of said copolymer, and said copolymer having a number average molecular weight of from about 25,000 to 30,000, such that said suture has good flexibility, good fatigue life and high tensile strength.
Claim 2
Dependent Claim
176 words
A annealed non-absorbable monofilament sterile surgical suture or ligature having an attached needle comprising a polymeric block (A) consisting of a polyalkylene ether of the formula ##STR10## having a number average molecular weight of from about 500-3000 wherein R is a straight or branched chain alkyl group of from about 2 to 10 carbon atoms and R 2 is 1,4-phenylene or cyclohexylene and n is the number of repeating units; and a polymeric block (B) which is the reaction product of an aromatic dicarboxylic acid or a cycloaliphatic acid, and a short chain aliphatic or cycloaliphatic diol, having the formula ##STR11## wherein R 1 is a straight or branched chain alkyl group of from about 2 to 10 carbon atoms or a cyclic group having the formula ##STR12## and R 2 is 1,4-phenylene or cyclohexylene, said block (B) comprising from about 30% to 95% of said copolymer, and said copolymer having a number average molecular weight of from about 25,000 to 30,000, such that said suture has good flexibility, good fatigue life and high tensile strength.
Claim 3
Dependent Claim
22 words
The surgical suture or ligature of claim 1, wherein the polymeric block (B) comprises from about 50% to 85% of the copolymer.
Claim 4
Dependent Claim
22 words
The surgical suture or ligature of claim 1, wherein the polymeric block (B) comprises from about 55% to 80% of the copolymer.
Claim 5
Dependent Claim
21 words
The surgical suture or ligature of claim 1, wherein R is selected from the group consisting of ethylene, propylene or butylene.
Claim 6
Dependent Claim
12 words
The surgical suture or ligature of claim 4, wherein R is butylene.
Claim 7
Dependent Claim
21 words
A surgical suture package comprising a sterile enclosure and therein a non-absorbable monofilament sterile surgical suture or ligature of claim 1.
Claim 8
Dependent Claim
11 words
The surgical suture package of claim 6 wherein R is butylene.
Claim 9
Dependent Claim
24 words
The surgical suture or ligature of claim 1 or 3 or 5 or 7 wherein said suture or ligature is heated at constant length.
References Cited (Backward Citations)
US3359983A
Cited
US3652713A
Cited
US3766146A
Cited
DE2265294A1
Cited
US3784520A
Cited
US3861521A
Cited
US3875946A
Cited
US4032993A
Cited
US4127127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-27 | 1984-07-28 | 1985-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-27 | 1988-07-28 | 1989-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-27 | 1992-07-28 | 1993-01-27 | $7700.00 | Window Closed / Lapsed |