US4610690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rupture resistant prosthesis with bonded surface layer and method of forming same
Assignee: Mentor Worldwide LLC
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Filing: 1983-02-22
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Granted: 1986-09-09
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Expires: 2003-02-22
Abstract
Abstract A surgically implantable prosthesis such as a mammary implant, that is rendered rupture-resistant by a lubricious layer bonded to the inner surface, outer surface, or both such surfaces of a wall of a flexible, creasable shell of the prosthesis. The lubricious layer reduces self-abrasion damage between sliding surfaces of the shell in a folding or creased area of the shell after surgical implantation. The lubricious layer can be mechanically bonded, such as through physical locking within an interpenetrating lattice structure of such wall, or can be attached to the shell's wall through a covalent chemical bond. An example of the rupture-resistant prosthesis includes a lubricious layer of an acrylamide polymer radiation bonded to at least one wall surface of a silicone shell or bag.
Inventors
- 👤 John S. Tiffany
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:51
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/12
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
89 words
A surgically implantable rupture-resistant breast prosthesis comprising: a flexible, creasable shell of silicone polymer adapted to contain a saline inflating liquid and having a wall with inner and outer surfaces; and an abrasion resistant hydrogel layer having substantially greater lubricity than the shell bonded to one of such wall surfaces to substantially reduce self-abrasion damage to the shell wall during sliding contact between opposing areas of this one surface when a saline inflating liquid is confined within the shell and the shell wall has a crease after surgical implantation.
Claim 2
Dependent Claim
89 words
A surgically implantable rupture-resistant breast prosthesis comprising: a flexible, creasable shell of silicone polymer adapted to contain a saline inflating liquid and having a wall with inner and outer surfaces; and an abrasion resistant hydrogel layer having substantially greater lubricity than the shell bonded to one of such wall surfaces to substantially reduce self-abrasion damage to the shell wall during sliding contact between opposing areas of this one surface when a saline inflating liquid is confined within the shell and the shell wall has a crease after surgical implantation.
Claim 3
Dependent Claim
20 words
A rupture-resistant prosthesis as set forth in claim 1, wherein the abrasion-resistant layer is bonded to the shell's inner surface.
Claim 4
Dependent Claim
20 words
A rupture-resistant prosthesis as set forth in claim 1, wherein the abrasion-resistant layer is bonded to the shell's outer surface.
Claim 5
Dependent Claim
25 words
A rupture-resistant prosthesis as set forth in claim 1, wherein there are abrasion-resistant layers bonded to both the inner and outer surfaces of the shell.
Claim 6
Dependent Claim
23 words
A rupture-resistant prosthesis as set forth in claim 1, wherein the abrasion-resistant layer is bonded to the one surface by a mechanical bond.
Claim 7
Dependent Claim
22 words
A rupture-resistant prosthesis as set forth in claim 5, wherein the mechanical bond includes a physical locking within an interpenetrated lattice structure.
Claim 8
Dependent Claim
23 words
A rupture-resistant prosthesis as set forth in claim 1, wherein the abrasion-resistant layer is bonded to the one surface by a chemical bond.
Claim 9
Dependent Claim
17 words
A rupture-resistant prosthesis as set forth in claim 7, wherein the chemical bond is a covalent bond.
Claim 10
Dependent Claim
17 words
A rupture-resistant prosthesis as set forth in claim 7, wherein the bond is a graft polymerization bond.
Claim 11
Dependent Claim
25 words
A rupture-resistant prosthesis as set forth in claim 1, wherein the abrasion-resistant layer is selected from the group consisting of acrylamide, vinylpyrrolidone, and hydroxymethyl methacrylate.
Claim 12
Dependent Claim
21 words
A rupture-resistant prosthesis as set forth in claim 1, wherein the shell is in an unfilled state prior to surgical inflation.
Claim 13
Dependent Claim
23 words
A rupture-resistant prosthesis, as set forth in claim 1, wherein the shell is prefilled with a saline inflating liquid prior to surgical implantation.
Claim 14
Dependent Claim
15 words
A rupture-resistant prosthesis as set forth in claim 13, wherein the inflating liquid is biocompatible.
Claim 15
Dependent Claim
24 words
A rupture-resistant prosthesis as set forth in claim 1, wherein the shell wall has a thickness of from about 0.003 to about 0.050 inch.
Claim 16
Dependent Claim
23 words
A rupture-resistant prosthesis as set forth in claim 1, wherein the abrasion-resistant layer has a thickness from about 0.0001 to about 0.005 inch.
Claim 17
Dependent Claim
15 words
A rupture-resistant prosthesis as set forth in claim 1, wherein the abrasion-resistant layer is biocompatible.
Claim 18
Dependent Claim
30 words
A rupture-resistant prosthesis as set forth in claim 1, wherein the abrasion resistant hydrogel layer is selected from the group consisting of vinylpyrrolidone, acrylamide, methacrylamide, N-substituted acrylamide and hydroxyalkyl methacrylate.
Claim 19
Dependent Claim
98 words
A surgically implantable rupture-resistant breast prosthesis comprising: a flexible, creasable shell of silicone polymer adapted to contain a saline inflating liquid and having a wall with inner and outer surfaces; and an abrasion-resistant hydrogel layer selected from the group consisting of acrylamide, vinylpyrrolidone, methacrylamide, N-substituted acrylamide and hdyroxymethyl methacrylate mechanically or chemically bonded to one of such wall surfaces to substantially reduce self-abrasion damage to the shell wall during sliding contact between opposing areas of this one surface when a saline inflating liquid is confined within the shell and the shell wall has a crease after surgical implantation.
Claim 20
Dependent Claim
98 words
A surgically implantable rupture-resistant breast prosthesis comprising: a flexible, creasable shell of silicone polymer adapted to contain a saline inflating liquid and having a wall with inner and outer surfaces; and an abrasion-resistant hydrogel layer selected from the group consisting of acrylamide, vinylpyrrolidone, methacrylamide, N-substituted acrylamide and hdyroxymethyl methacrylate mechanically or chemically bonded to one of such wall surfaces to substantially reduce self-abrasion damage to the shell wall during sliding contact between opposing areas of this one surface when a saline inflating liquid is confined within the shell and the shell wall has a crease after surgical implantation.
Claim 21
Dependent Claim
25 words
A rupture-resistant breast prosthesis according to claim 18, wherein the abrasion-resistant hydrogel layer is selected from the group consisting of acrylamide, vinylpyrrolidone and hydroxymethyl methacrylate.
Claim 22
Independent Claim
105 words
A method of forming a surgically implantable rupture-resistant breast prosthesis comprising: (a) forming an unfilled flexible creasable shell of silicone polymer with a wall having inner and outer surfaces; and (b) mechanically or chemically bonding to one of such wall surfaces an abrasion resistant hydrogel layer having substantially greater lubricity than the shell, whereby the shell can be inflated with a saline inflating liquid and surgically implanted to substantially reduce self-abrasion damage to the shell during sliding contact between opposing areas of this one surface when a saline inflating liquid is confined within the shell and the shell wall has a crease after surgical implantation.
Claim 23
Independent Claim
105 words
A method of forming a surgically implantable rupture-resistant breast prosthesis comprising: (a) forming an unfilled flexible creasable shell of silicone polymer with a wall having inner and outer surfaces; and (b) mechanically or chemically bonding to one of such wall surfaces an abrasion resistant hydrogel layer having substantially greater lubricity than the shell, whereby the shell can be inflated with a saline inflating liquid and surgically implanted to substantially reduce self-abrasion damage to the shell during sliding contact between opposing areas of this one surface when a saline inflating liquid is confined within the shell and the shell wall has a crease after surgical implantation.
Claim 24
Dependent Claim
23 words
A method of forming a rupture-resistant prosthesis as set forth in claim 20, wherein the shell is inflated and sealed during surgical implantation.
Claim 25
Dependent Claim
29 words
A method of forming a rupture-resistant prosthesis as set forth in claim 20, wherein the shell is prefilled with a saline inflating liquid and sealed prior to surgical implantation.
Claim 26
Dependent Claim
32 words
A method of forming a rupture-resistant prosthesis as set forth in claim 20, wherein the bonding step includes bonding an abrasive-resistant layer to both inner and outer surfaces of the shell wall.
Claim 27
Dependent Claim
42 words
A method of forming a rupture-resistant prosthesis as set forth in claim 20, wherein the shell is a silicone polymer, the abrasion-resistant layer is selected from the group consisting of acrylamide, vinylpyrrolidone, and hydroxymethyl methacrylate, and the bonding is by graft polymerization.
Claim 28
Dependent Claim
32 words
A method of forming a rupture-resistant prosthesis according to claim 20, wherein the abrasion resistant hydrogel layer is selected from the group consisting of vinylpyrrolidone, acrylamide, methacrylamide, N-substituted acrylamide and hydroxyalkyl methacrylate.
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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) | 1989-09-08 | 1990-03-10 | 1990-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-08 | 1994-03-10 | 1994-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-08 | 1998-03-10 | 1998-09-09 | $7700.00 | Window Closed / Lapsed |