US5284489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filament fabricated from a blend of ionomer resin and nonionic thermoplastic resin
Assignee: United States Surgical Corp
•
Filing: 1992-08-19
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Granted: 1994-02-08
•
Expires: 2012-08-19
Abstract
Abstract A filament is fabricated from a biologically acceptable blend of an ionomer resin such as an ionically crosslinked ethylene-methacrylic acid copolymer and a nonionic thermoplastic resin, e.g., a polyolefin such as an isotactic polypropylene.
Inventors
- 👤 Cheng-Kung Liu
- 👤 John C. Brewer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:40
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/44; D01F6/46; A; A61; A61L; A61L17/00; A61L17/04; A61L31/00; A61L31/04; A61L31/041
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
20 words
A medical device comprising a filament fabricated from a biologically acceptable resin blend comprising ionomer resin and nonionic thermoplastic resin.
Claim 2
Dependent Claim
20 words
A medical device comprising a filament fabricated from a biologically acceptable resin blend comprising ionomer resin and nonionic thermoplastic resin.
Claim 3
Dependent Claim
29 words
The device of claim 1 wherein the blend contains from about 1 to about 95 parts by weight of ionomer resin based on the total weight of the blend.
Claim 4
Dependent Claim
29 words
The device of claim 1 wherein the blend contains from about 2 to about 50 parts by weight of ionomer resin based on the total weight of the blend.
Claim 5
Dependent Claim
29 words
The device of claim 1 wherein the blend contains from about 5 to about 20 parts by weight of ionomer resin based on the total weight of the blend.
Claim 6
Dependent Claim
37 words
The device of claim 1 wherein the ionomer resin is based on a copolymer of at least one alpha olefin and a member selected from the group consisting of ethylenically unsaturated carboxylic acids and carboxylic acid anhydrides.
Claim 7
Dependent Claim
19 words
The device of claim 1 wherein the ionomer resin is based on a copolymer of ethylene and methacrylic acid.
Claim 8
Dependent Claim
13 words
The device of claim 1 wherein the nonionic thermoplastic resin is a polyolefin.
Claim 9
Dependent Claim
14 words
The device of claim 1 wherein the nonionic thermoplastic resin is a crystalline polypropylene.
Claim 10
Dependent Claim
29 words
The device of claim 1 wherein the nonionic thermoplastic resin is an isotactic polypropylene having a melt flow index, in g/10 min, of from about 2 to about 6.
Claim 11
Dependent Claim
48 words
The device of claim 1 wherein the blend contains from about 1 to about 40 parts by weight of ionomer resin, the ionomer resin is based on a copolymer of an alpha olefin and an ethylenically unsaturated carboxylic acid and the nonionic thermoplastic resin is an isotactic polypropylene.
Claim 12
Dependent Claim
16 words
A suture fabricated from a biologically acceptable resin blend comprising ionomer resin and nonionic thermoplastic resin.
Claim 13
Dependent Claim
16 words
A suture fabricated from a biologically acceptable resin blend comprising ionomer resin and nonionic thermoplastic resin.
Claim 14
Dependent Claim
10 words
The suture of claim 11 which is of monofilament construction.
Claim 15
Dependent Claim
10 words
The suture of claim 11 which is of multifilament construction.
Claim 16
Dependent Claim
29 words
The suture of claim 11 wherein the blend contains from about 1 to about 99 parts by weight of ionomer resin based on the total weight of the blend.
Claim 17
Dependent Claim
29 words
The suture of claim 11 wherein the blend contains from about 2 to about 50 parts by weight of ionomer resin based on the total weight of the blend.
Claim 18
Dependent Claim
29 words
The suture of claim 11 wherein the blend contains from about 5 to about 20 parts by weight of ionomer resin based on the total weight of the blend.
Claim 19
Dependent Claim
37 words
The suture of claim 11 wherein the ionomer resin is based on a copolymer of at least one alpha olefin at a member selected from the group consisting of ethylenically unsaturated carboxylic acids and carboxylic acid anhydrides.
Claim 20
Dependent Claim
18 words
The suture of claim 11 wherein the ionomer resin is based on a copolymer of ethylene and methacrylic
Claim 21
Dependent Claim
13 words
The suture of claim 11 wherein the nonionic thermoplastic resin is a polyolefin.
Claim 22
Dependent Claim
14 words
The suture of claim 11 wherein the nonionic thermoplastic resin is a crystalline polypropylene.
Claim 23
Dependent Claim
29 words
The suture of claim 11 wherein the nonionic thermoplastic resin is an isotactic polypropylene having a melt flow index, in g/10 min, of from about 2 to about 6.
Claim 24
Dependent Claim
29 words
The suture of claim 11 wherein the nonionic thermoplastic resin is an isotactic polypropylene having a melt flow index, in g/10 min, of from about 2.5 to about 4.5.
Claim 25
Dependent Claim
40 words
The suture of claim 11 wherein the nonionic thermoplastic resin is an isotactic polypropylene possessing a weight average molecular weight of from about 200,000 to about 350,000 and a number average molecular weight of from about 50,000 to about 180,000.
Claim 26
Dependent Claim
48 words
The suture of claim 11 wherein the blend contains from about 1 to about 40 parts by weight of ionomer resin, the ionomer resin is based on a copolymer of an alpha olefin and an ethylenically unsaturated carboxylic acid and the nonionic thermoplastic resin is an isotactic polypropylene.
Claim 27
Dependent Claim
17 words
The suture of claim 11 containing at least one bioactive substance ionically bonded to the ionomer resin.
Claim 28
Dependent Claim
17 words
A surgical mesh fabricated from a biologically acceptable resin blend comprising ionomer resin and nonionic thermoplastic resin.
Claim 29
Dependent Claim
17 words
A surgical mesh fabricated from a biologically acceptable resin blend comprising ionomer resin and nonionic thermoplastic resin.
Claim 30
Dependent Claim
43 words
A suture fabricated from a filament obtained by the process comprising melt extruding a biologically acceptable and compatible resin blend comprising ionomer resin and nonionic thermoplastic resin to provide a monofilament, cooling the monofiliment, stretching the cooled monofilament and annealing the stretched monofilament.
Claim 31
Dependent Claim
43 words
A suture fabricated from a filament obtained by the process comprising melt extruding a biologically acceptable and compatible resin blend comprising ionomer resin and nonionic thermoplastic resin to provide a monofilament, cooling the monofiliment, stretching the cooled monofilament and annealing the stretched monofilament.
Claim 32
Dependent Claim
71 words
A suture fabricated from a filament obtained by the process of claim 27 wherein extruding is carried out at from about 180° to about 250° C., stretching is carried out from about 60 to about 180° C. at a stretch ratio of from about 3 to about 8 and annealing is carried out at from about 60 to about 160° C. with recovery to within about 80 to about 97 percent.
Claim 33
Dependent Claim
112 words
A suture fabricated from a filament obtained by the process of claim 27 wherein the blend contains from about 1 to about 40 parts by weight of ionomer resin, the ionomer resin is based on copolymer of an alpha olefin and an ethylenically unsaturated carboxylic acid and the nonionic thermoplastic resin is an isotactic polypropylene, extruding is carried out at from about 190 to about 230° C., stretching is carried out from about 80 to about 120° C. at a stretch ratio of from about 5 to about 7 and annealing is carried out at from about 100 to about 150° C. with recovery to within about 85 to about 95 percent.
Claim 34
Dependent Claim
17 words
The suture of claim 27 containing at least one bioactive substance ionically bonded to the ionomer resin.
Claim 35
Dependent Claim
32 words
A process of closing a wound comprising: providing a suture fabricated from a biologically acceptable resin blend comprising ionomer resin an nonionic thermoplastic resin; and suturing said wound closed with said suture.
Claim 36
Dependent Claim
32 words
A process of closing a wound comprising: providing a suture fabricated from a biologically acceptable resin blend comprising ionomer resin an nonionic thermoplastic resin; and suturing said wound closed with said suture.
Claim 37
Dependent Claim
21 words
A process as in claim 31 wherein the suture contains at least one bioactive substance ionically bonded to the ionomer resin.
Claim 38
Dependent Claim
32 words
A process of hernia repair comprising: providing a surgical mesh fabricated from a biologically acceptable resin blend comprising ionomer resin and nonionic thermoplastic resin; and employing said mesh in repairing a hernia.
Claim 39
Dependent Claim
32 words
A process of hernia repair comprising: providing a surgical mesh fabricated from a biologically acceptable resin blend comprising ionomer resin and nonionic thermoplastic resin; and employing said mesh in repairing a hernia.
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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) | 1997-02-07 | 1997-08-09 | 1998-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-07 | 2001-08-09 | 2002-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-07 | 2005-08-09 | 2006-02-08 | $7700.00 | Window Closed / Lapsed |