US4224946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical sutures derived from segmented polyether-ester block copolymers
Assignee: Covidien AG
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Filing: 1978-08-14
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Granted: 1980-09-30
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Expires: 1998-08-14
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
2026-10-25 17:36
CPC Classifications
A; A61; A61L; A61L17/00; A61L17/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
200 words
A 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 ##STR11## 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 is defined by R and R 2 , by R 1 in polymeric block (B), and by the total molecular weight of the copolymer; 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 ##STR12## 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 ##STR13## 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
200 words
A 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 ##STR11## 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 is defined by R and R 2 , by R 1 in polymeric block (B), and by the total molecular weight of the copolymer; 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 ##STR12## 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 ##STR13## 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 6.
Claim 8
Dependent Claim
11 words
The surgical suture package of claim 6 wherein R is butylene.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-30 | 1984-03-31 | 1984-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-30 | 1988-03-31 | 1988-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-30 | 1992-03-31 | 1992-09-30 | $7700.00 | Window Closed / Lapsed |