GB1604177A
Expired / Lapsed
GB
⏱️ 0.0 years remaining
Surgical articles formed from copolymeric lactide polyesters
Assignee: Wyeth Holdings LLC
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Filing: 1978-04-28
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Granted: —
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Expires: 1998-04-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-23 04:09
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/08; A; A61; A61L; A61L17/00; A61L17/06; A61L17/10; A61L17/12
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
87 words
A method for the manufacture of a sterile absorbable surgical article, comprising the steps of:
1) preparing a synthetic absorbable copolymeric lactide ester from copolymerizable monomers comprising at least one lactide monomer, the polymerization being conducted in two or more stages employing sequential addition of the comonomers whereby there is formed in each stage a polymeric chain of different composition from the polymeric chain formed in the or each other stage; and
2) forming a sterile surgical article from the copolymeric lactide polyester obtained in step 1).
Claim 2
Independent Claim
87 words
A method for the manufacture of a sterile absorbable surgical article, comprising the steps of:
1) preparing a synthetic absorbable copolymeric lactide ester from copolymerizable monomers comprising at least one lactide monomer, the polymerization being conducted in two or more stages employing sequential addition of the comonomers whereby there is formed in each stage a polymeric chain of different composition from the polymeric chain formed in the or each other stage; and
2) forming a sterile surgical article from the copolymeric lactide polyester obtained in step 1).
Claim 3
Dependent Claim
19 words
A method according to Claim 1, wherein said lactide monomer or monomers is (are) selected from L(-)lactide and glycolide.
Claim 4
Dependent Claim
22 words
A method according to Claim 2, wherein L(-)lactide is polymerized in a first stage and glycolide is polymerized in a second stage.
Claim 5
Dependent Claim
14 words
A method according to Claim 3, wherein L(-)lactide is polymerized in a third stage.
Claim 6
Independent Claim
17 words
A method according to any preceding claim, wherein a sterile surgical suture is formed in step 2).
Claim 7
Dependent Claim
62 words
A sterile absorbable surgical article formed from a synthetic absorbable copolymeric lactide polyester prepared from copolymerizable monomers comprising at least one lactide monomer by conducting the polymerization in two or more stages employing sequential addition of the comonomers whereby there is formed in each stage a polymeric chain of different composition from the polymeric chain formed in the or each other stage.
Claim 8
Dependent Claim
62 words
A sterile absorbable surgical article formed from a synthetic absorbable copolymeric lactide polyester prepared from copolymerizable monomers comprising at least one lactide monomer by conducting the polymerization in two or more stages employing sequential addition of the comonomers whereby there is formed in each stage a polymeric chain of different composition from the polymeric chain formed in the or each other stage.
Claim 9
Dependent Claim
29 words
A surgical article according to Claim 6, wherein said copolymeric lactide polyester contains units derived from the polymerization of a lactide monomer or monomers selected from L(-)lactide and glycolide.
Claim 10
Dependent Claim
40 words
A surgical article according to Claim 7, wherein said copolymeric lactide polyester contains units derived from the polymerization of L(-)lactide in a first stage of polymerization and units derived from the polymerization of glycolide in a second stage of polymerization.
Claim 11
Dependent Claim
27 words
A surgical article according to Claim 8, wherein said copolymeric lactide polyester further contains units derived from the polymerization of L(-)lactide in a third stage of polymerization.
Claim 12
Dependent Claim
25 words
A surgical article according to any one of Claims 7-9, wherein said copolymeric lactide polyester contains up to 25 percent of units derived from L(-)lactide.
Claim 13
Dependent Claim
9 words
A suture according to any one of Claims 6-10.
Claim 14
Dependent Claim
12 words
A suture according to Claim 11 in combination with a sterile needle.
Claim 15
Dependent Claim
34 words
A method for the manufacture of a sterile absorbable surgical article according to
Claim 1, wherein said synthetic absorbable copolymeric lactide ester is prepared sqbstantially as described in any one of the Examples herein.
Claim 16
Dependent Claim
32 words
A sterile absorbable surgical article according to Claim 6, and formed from a synthetic absorbablecopol meric lactide ester which has been prepared substantially as ascribed in any one of the Examples herein.
References Cited (Backward Citations)
No citation records indexed.
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