EP0202090A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method for producing a surgical fastener member
Assignee: Ethicon Inc
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Filing: 1986-05-12
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Granted: —
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Expires: 2006-05-12
Abstract
Abstract A tissue fastening device comprising (a) a fastener member having a pair of legs extending from the same side of a connecting cross piece, said fastener member adapted to be placed on one side of the tissue to be joined with the legs penetrating the tissue, said fastener member being an oriented crystalline polymeric material, whereby the fastener member has sufficient inherent strength and stiffness so said legs can penetrate the tissue to be fastened, and (b) a receiver member to secure said fastener member in place.
Inventors
- 👤 Glen Clarence Dorband
- 👤 Alfred Liland
- 👤 Edgar Vithal Menezes
- 👤 Peter Steinheuser
- 👤 Nicholas Popadiuk
- 👤 Stephen Joseph Failla
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 04:03
CPC Classifications
B; B29; B29C; B29C71/00; B29C71/02; A; A61; A61B; A61B17/00; A61B17/064; A61B17/0643; A61L; A61L31/00; A61L31/04; A61L31/06; A61L31/14; A61L31/148; B29C55/00; B29C55/005; B29C69/00; B29C69/001; B29C69/002; B29C69/003; A61F; A61F2/00; A61F2/0059; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30084; B29K; B29K2067/00; B29L; B29L2031/00; B29L2031/727; B29L2031/753
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
111 words
A tissue fastening device comprising (a) a fastener member having a pair of legs extending from the same side of a connecting cross piece, said fastener member adapted to be placed on one side of the tissue to be joined with "the legs penetrating the tissue, said fastener member being an oriented crystalline polymeric material, whereby the fastener member has sufficient inherent strength and stiffness so said legs can penetrate the tissue to be fastened, and (b) a receiver member to secure said fastener member in place, whereby said tissue fastening device retains measurable separation strength after 21 days immersion in physiological saline solution at 37°C. and a pH of 7.2.
Claim 2
Dependent Claim
111 words
A tissue fastening device comprising (a) a fastener member having a pair of legs extending from the same side of a connecting cross piece, said fastener member adapted to be placed on one side of the tissue to be joined with "the legs penetrating the tissue, said fastener member being an oriented crystalline polymeric material, whereby the fastener member has sufficient inherent strength and stiffness so said legs can penetrate the tissue to be fastened, and (b) a receiver member to secure said fastener member in place, whereby said tissue fastening device retains measurable separation strength after 21 days immersion in physiological saline solution at 37°C. and a pH of 7.2.
Claim 3
Dependent Claim
130 words
A tissue fastening device comprising (a) a fastener member having a pair of legs extending from the same side of a connecting cross piece, said fastener member adapted to be placed on one side of the tissue to be joined with the legs of said fastener member penetrating the tissue, and (b) a receiver member adapted to be placed on the opposite side of the tissue to be joined and engaging said legs of said fastener member to secure the device in place, said fastener member being an oriented crystalline polymeric material, whereby the fastener member has sufficient inherent strength so said legs can penetrate the tissue and said fastener member remains secured to said receiver member with measurable strength for at least seven days after implantation in said tissue.
Claim 4
Dependent Claim
130 words
A tissue fastening device comprising (a) a fastener member having a pair of legs extending from the same side of a connecting cross piece, said fastener member adapted to be placed on one side of the tissue to be joined with the legs of said fastener member penetrating the tissue, and (b) a receiver member adapted to be placed on the opposite side of the tissue to be joined and engaging said legs of said fastener member to secure the device in place, said fastener member being an oriented crystalline polymeric material, whereby the fastener member has sufficient inherent strength so said legs can penetrate the tissue and said fastener member remains secured to said receiver member with measurable strength for at least seven days after implantation in said tissue.
Claim 5
Dependent Claim
18 words
The tissue fastening device of claim 1 or claim 2 wherein said polymeric material is an absorbable polymer.
Claim 6
Dependent Claim
22 words
The tissue fastening device of claim 3 wherein said absorbable polymer is a lactide polymer, a glycolide polymer, or a lactide/glycolide copolymer.
Claim 7
Dependent Claim
24 words
The tissue fastening device of claim 4 wherein the fastener member is made of a lactide/glycolide cpolymer and wherein the receiver member is poly-(p-dioxanone).
Claim 8
Dependent Claim
20 words
The tissue fastening device of claim 5 wherein said copolymer is made from a 90/10 (mol per cent) glycolide/lactide mixture.
Claim 9
Dependent Claim
27 words
7 . The tissue fastening device of any one of claims 1 to 6, wherein the stress-strain curve of said oriented polymeric material exhibits no yield point.
Claim 10
Dependent Claim
81 words
Process for producing a fastener member as described in any one of claims 1 to 7, which process comprises forming an oriented polymeric filament into the configuration of said fastener member, annealing the thus formed filament at a temperature between the glass transition and melting temperatures of said polymer while restraining said filament from shrinking, and cooling the filament to a temperature below the glass transition temperature of said polymer while maintaining said filament under such restraint in the said configuration.
Claim 11
Dependent Claim
35 words
The process of claim 8 wherein the forming of the oriented polymeric filament into the configuration of the fastener member includes the step of winding said filament around a forming bar having a rectangular cross-section.
Claim 12
Dependent Claim
18 words
The process of claim 9 further including the step of clamping the wound filament againstthe. said forming bar.
References Cited (Backward Citations)
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