Patent US5236453A successfully refreshed from Google Patents.
US5236453A
Expired / Lapsed
US
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Mammary implant and method for reducing capsule contracture
Assignee: Individual
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Filing: 1990-03-09
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Granted: 1993-08-17
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Expires: 2010-03-09
Abstract
Abstract A mammary implant is disclosed. Extending from the outer surface of the mammary implant are a plurality of projections of specific combinations of height and width dimensions selected from the group of (1) approximately 750 microns high and approximately 250 microns wide and (2) approximately 1600 microns high and approximately 800 microns wide. Preferred edge to edge spacing distances between adjacent projections and center-to-center spacings between adjacent projections are also disclosed. The projections are thickened near the base.
Inventors
- 👤 George J. Picha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:18
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/12; A61B; A61B90/00; A61B90/02
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
66 words
An implantable mammary prosthesis having an improved nonclassical tissue response comprising a supporting structure having an outer surface and a plurality of projections extending from the outer surface of said supporting structure, said projections having height and width dimensions selected from the group consisting of (1) approximately 750 microns high and approximately 250 microns wide and (2) approximately 1600 microns high and approximately 800 microns wide.
Claim 2
Dependent Claim
66 words
An implantable mammary prosthesis having an improved nonclassical tissue response comprising a supporting structure having an outer surface and a plurality of projections extending from the outer surface of said supporting structure, said projections having height and width dimensions selected from the group consisting of (1) approximately 750 microns high and approximately 250 microns wide and (2) approximately 1600 microns high and approximately 800 microns wide.
Claim 3
Dependent Claim
30 words
An implantable mammary prosthesis according to claim 1, wherein each of said projections are spaced apart by a lateral spacing sized to allow tissue penetration without promoting classical tissue response.
Claim 4
Dependent Claim
22 words
An implantable mammary prosthesis according to claim 1, wherein the projections have a width to center-to-center spacing ratio between 1:1.4 and 1:6.
Claim 5
Dependent Claim
29 words
An implantable mammary prosthesis according to claim 1, wherein the projections have a width equal to approximately 250 microns and a width to center-to-center spacing ratio of approximately 1:2.
Claim 6
Dependent Claim
29 words
An implantable mammary prosthesis according to claim 1, wherein the projections have a width equal to approximately 800 microns and a width to center-to-center spacing ratio of approximately 1:1.5.
Claim 7
Dependent Claim
23 words
An implantable mammary prosthesis according to claim 1, wherein the projections extend from substantially all of the outer surface of said supporting structure.
Claim 8
Dependent Claim
36 words
An implantable mammary prosthesis according to claim 1, wherein said projections are arranged in a uniform array, and each of said projections are substantially cylindrical with a thickened area near a base adjacent said outer surface.
Claim 9
Dependent Claim
121 words
An implantable mammary prosthesis having improved nonclassical tissue response comprising a supporting structure having an outer surface and a plurality of uniform projections extending from the outer surface of said supporting structure, said projections having a preselected height and width, each of said projections being spaced apart by a lateral spacing sized to allow fascial tissue penetration without promoting classical tissue response, said projections having height and width dimensions selected from the group consisting of (1) a height of from about 675 to about 825 microns and a width of from about 225 to about 275 microns and (2 ) a height of from about 1,440 to about 1,760 microns and a width of from about 720 to about 880 microns.
Claim 10
Dependent Claim
121 words
An implantable mammary prosthesis having improved nonclassical tissue response comprising a supporting structure having an outer surface and a plurality of uniform projections extending from the outer surface of said supporting structure, said projections having a preselected height and width, each of said projections being spaced apart by a lateral spacing sized to allow fascial tissue penetration without promoting classical tissue response, said projections having height and width dimensions selected from the group consisting of (1) a height of from about 675 to about 825 microns and a width of from about 225 to about 275 microns and (2 ) a height of from about 1,440 to about 1,760 microns and a width of from about 720 to about 880 microns.
Claim 11
Dependent Claim
23 words
An implantable mammary prosthesis according to claim 8, wherein said adjacent projections have a width to lateral spacing ratio between 1:0.4 and 1:5.
Claim 12
Dependent Claim
36 words
An implantable mammary prosthesis according to claim 9, wherein said projections are arranged in a uniform array, and each of said projections are substantially cylindrical with a thickened area near a base adjacent said outer surface.
Claim 13
Dependent Claim
120 words
An implantable mammary prosthesis having improved nonclassical tissue response comprising a supporting structure having an outer surface and a plurality of uniform projections extending from the outer surface of said supporting structure, said projections having a preselected height and width, each of said projections being spaced apart by a lateral spacing sized to allow fatty tissue penetration without promoting classical tissue response, said projections having height and width dimensions selected from the group consisting of (1) a height of from about 675 to about 825 microns and a width of from about 225 to about 275 microns and (2) a height of from about 1,440 to about 1,760 microns and a width of from about 720 to about 880 microns.
Claim 14
Dependent Claim
120 words
An implantable mammary prosthesis having improved nonclassical tissue response comprising a supporting structure having an outer surface and a plurality of uniform projections extending from the outer surface of said supporting structure, said projections having a preselected height and width, each of said projections being spaced apart by a lateral spacing sized to allow fatty tissue penetration without promoting classical tissue response, said projections having height and width dimensions selected from the group consisting of (1) a height of from about 675 to about 825 microns and a width of from about 225 to about 275 microns and (2) a height of from about 1,440 to about 1,760 microns and a width of from about 720 to about 880 microns.
Claim 15
Dependent Claim
23 words
An implantable mammary prosthesis according to claim 11, wherein said adjacent projections have a width to lateral spacing ratio between 1:0.4 and 1:5.
Claim 16
Independent Claim
86 words
A method to reduce the incidence of capsule contracture around an implantable mammary prosthesis comprising implanting an implantable mammary prosthesis including a supporting structure having an outer surface with a surface morphology, said surface morphology comprising a plurality of projections extending from the outer surface of the supporting structure of said prosthesis, said projections having height and width dimensions selected from the groups consisting of (1) approximately 750 microns high and approximately 250 microns wide and (2) approximately 1,600 microns high and approximately 800 microns wide.
Claim 17
Independent Claim
86 words
A method to reduce the incidence of capsule contracture around an implantable mammary prosthesis comprising implanting an implantable mammary prosthesis including a supporting structure having an outer surface with a surface morphology, said surface morphology comprising a plurality of projections extending from the outer surface of the supporting structure of said prosthesis, said projections having height and width dimensions selected from the groups consisting of (1) approximately 750 microns high and approximately 250 microns wide and (2) approximately 1,600 microns high and approximately 800 microns wide.
Claim 18
Dependent Claim
28 words
A method according to claim 13, wherein each of said projections are spaced apart by a lateral spacing sized to allow tissue penetration without promoting classical tissue response.
Claim 19
Dependent Claim
20 words
A method according to claim 13, wherein the projections have a width to center-to-center spacing ratio between 1:1.4 and 1:6.
Claim 20
Dependent Claim
27 words
A method according to claim 13, wherein the projections have a width equal to approximately 250 microns and a width to center-to-center spacing ratio of approximately 1:2.
Claim 21
Dependent Claim
27 words
A method according to claim 13, wherein the projections have a width equal to approximately 800 microns and a width to center-to-center spacing ratio of approximately 1:1.5.
Claim 22
Dependent Claim
21 words
A method according to claim 13, wherein the projections extend from substantially all of the outer surface of said supporting structure.
Claim 23
Dependent Claim
34 words
A method according to claim 13, wherein said projections are arranged in a uniform array, and each of said projections are substantially cylindrical with a thickened area near a base adjacent said outer surface.
Claim 24
Independent Claim
150 words
A method to reduce classical tissue response including the incidence of capsule contracture around an implantable mammary prosthesis comprising the step of implanting an implantable mammary prosthesis having a supporting structure having an outer surface and a plurality of uniform projections extending from the outer surface of said supporting structure, said projections having a preselected height and width, each of said projections being adapted to penetrate fascial tissue and said edge to edge distance being spaced apart by a lateral spacing sized to allow fascial tissue penetration without promoting classical tissue response, said projections having height and width dimensions selected from the group consisting of (1) a height of from about 675 to about 825 microns and a width of from about 225 to about 275 microns and (2) a height of from about 1,440 to about 1,760 microns and a width of from about 720 to about 880 microns.
Claim 25
Independent Claim
150 words
A method to reduce classical tissue response including the incidence of capsule contracture around an implantable mammary prosthesis comprising the step of implanting an implantable mammary prosthesis having a supporting structure having an outer surface and a plurality of uniform projections extending from the outer surface of said supporting structure, said projections having a preselected height and width, each of said projections being adapted to penetrate fascial tissue and said edge to edge distance being spaced apart by a lateral spacing sized to allow fascial tissue penetration without promoting classical tissue response, said projections having height and width dimensions selected from the group consisting of (1) a height of from about 675 to about 825 microns and a width of from about 225 to about 275 microns and (2) a height of from about 1,440 to about 1,760 microns and a width of from about 720 to about 880 microns.
Claim 26
Dependent Claim
21 words
A method according to claim 20, wherein said adjacent projections have a width to lateral spacing ratio between 1:0.4 and 1:5.
Claim 27
Dependent Claim
34 words
A method according to claim 21, wherein said projections are arranged in a uniform array, and each of said projections are substantially cylindrical with a thickened area near a base adjacent said outer surface.
Claim 28
Independent Claim
138 words
A method to reduce classical tissue response including the incidence of capsule contracture around an implantable mammary prosthesis comprising the step of implanting an implantable mammary prosthesis having a supporting structure having an outer surface and a plurality of uniform projections extending from the outer surface of said supporting structure, said projections having a preselected height and width, each of said projections being spaced apart by a lateral spacing sized to allow fatty tissue penetration without promoting classical tissue response, said projections having height and width dimensions selected from the group consisting of (1) a height of from about 675 to about 825 microns and a width of from about 225 to about 275 microns and (2) a height of from about 1,440 to about 1,760 microns and a width of from about 720 to about 880 microns.
Claim 29
Independent Claim
138 words
A method to reduce classical tissue response including the incidence of capsule contracture around an implantable mammary prosthesis comprising the step of implanting an implantable mammary prosthesis having a supporting structure having an outer surface and a plurality of uniform projections extending from the outer surface of said supporting structure, said projections having a preselected height and width, each of said projections being spaced apart by a lateral spacing sized to allow fatty tissue penetration without promoting classical tissue response, said projections having height and width dimensions selected from the group consisting of (1) a height of from about 675 to about 825 microns and a width of from about 225 to about 275 microns and (2) a height of from about 1,440 to about 1,760 microns and a width of from about 720 to about 880 microns.
Claim 30
Dependent Claim
21 words
A method according to claim 23, wherein said adjacent projections have a width to lateral spacing ratio between 1:0.4 and 1:5.
References Cited (Backward Citations)
US4531244A
Cited
US4955909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-08-16 | 1997-02-15 | 1997-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-16 | 2001-02-15 | 2001-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-16 | 2005-02-15 | 2005-08-17 | $7700.00 | Window Closed / Lapsed |