US4871366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soft tissue implants for promoting tissue adhesion to same
Assignee: Clemson University
•
Filing: 1988-05-23
•
Granted: 1989-10-03
•
Expires: 2008-05-23
Abstract
Abstract A soft tissue implant comprises a flexible main body portion, having tissue-facing surfaces and a thin layer of pure titanium covering the tissue-facing surfaces. A method of promoting tissue adhesion of a soft tissue host to the tissue-facing surfaces of a soft tissue implant comprising a strip of polyethylene terephthalate velour comprises the steps of cleaning the strip with a low-residue detergent and rinsing same with fresh distilled water; refluxing the strip in distilled water for one hour at a temperature of less than 30° C.; drying the strip in a room-temperature desicator for several days; sterilizing the strip and packaging same; degasing the strip and storing same in a dust-free environment; removing the strip from the packaging and mounting the strip in the vacuum evaporator at an approximate angle of incidence of 90° from a pure titanium metal evaporant; evacuating the vacuum evaporator to a vacuum of about 2×10 -5 Torr; evaporating the titanium by direct resistance heating same; coating the strip with a layer of pure titanium on the order of one micron thick; and resterilizing and implanting the titanium-coated strip into the tissue host.
Inventors
- 👤 Andreas F. von Recum
- 👤 Francis W. Cooke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:16
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/28; A61L27/30; A61L27/306; A61F; A61F2/00; A61F2/0077; A61F2310/00; A61F2310/00389; A61F2310/00395; A61F2310/00407
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
57 words
A soft tissue implant, comprising: a flexible main body portion having tissue-facing surfaces; a thin non-porous layer of pure titanium covering said tissue-facing surfaces of said main body portion; and a thin layer of titanium oxide covering said pure titanium layer, said oxide layer forming a free surface of said implant for adhesion of soft tissue thereto.
Claim 2
Dependent Claim
57 words
A soft tissue implant, comprising: a flexible main body portion having tissue-facing surfaces; a thin non-porous layer of pure titanium covering said tissue-facing surfaces of said main body portion; and a thin layer of titanium oxide covering said pure titanium layer, said oxide layer forming a free surface of said implant for adhesion of soft tissue thereto.
Claim 3
Dependent Claim
19 words
A soft tissue implant as in claim 1, wherein said tissue-facing surfaces are formed of a flexible polymeric structure.
Claim 4
Dependent Claim
53 words
A soft tissue implant, comprising: a flexible main body portion having tissue-facing surfaces; and a thin non-porous layer of pure titanium covering said tissue-facing surfaces of said main body portion; wherein said tissue-facing surfaces are formed of a porous polymeric material having pores with diameters in the range of 1 to 150 microns.
Claim 5
Dependent Claim
53 words
A soft tissue implant, comprising: a flexible main body portion having tissue-facing surfaces; and a thin non-porous layer of pure titanium covering said tissue-facing surfaces of said main body portion; wherein said tissue-facing surfaces are formed of a porous polymeric material having pores with diameters in the range of 1 to 150 microns.
Claim 6
Dependent Claim
64 words
A soft tissue implant comprising: a flexible main body portion having tissue-facing surfaces; and a thin non-porous layer of pure titanium covering said tissue-facing surfaces of said main body portion; wherein said tissue-facing surfaces are formed of as polymeric material having a roughened surface texture, the roughness being hills and valleys in a range of 1 to 100 microns in height, depth and width.
Claim 7
Dependent Claim
64 words
A soft tissue implant comprising: a flexible main body portion having tissue-facing surfaces; and a thin non-porous layer of pure titanium covering said tissue-facing surfaces of said main body portion; wherein said tissue-facing surfaces are formed of as polymeric material having a roughened surface texture, the roughness being hills and valleys in a range of 1 to 100 microns in height, depth and width.
Claim 8
Dependent Claim
67 words
A soft tissue implant, comprising: a flexible main body portion having tissue-facing surfaces; a thin non-porous layer of pure titanium covering said tissue-facing surfaces of said main body portion; a thin layer of titanium oxide covering said pure titanium layer, said oxide layer forming a free surface of the implant for adhesion of soft tissue thereto; and wherein said tissue-facing surfaces are formed of a polymeric fabric.
Claim 9
Dependent Claim
67 words
A soft tissue implant, comprising: a flexible main body portion having tissue-facing surfaces; a thin non-porous layer of pure titanium covering said tissue-facing surfaces of said main body portion; a thin layer of titanium oxide covering said pure titanium layer, said oxide layer forming a free surface of the implant for adhesion of soft tissue thereto; and wherein said tissue-facing surfaces are formed of a polymeric fabric.
Claim 10
Dependent Claim
67 words
A soft tissue implant, comprising: a flexible main body portion having tissue-facing surfaces; a thin non-porous layer of pure titanium covering said tissue-facing surfaces of said main body portion; a thin layer of titanium oxide covering said pure titanium layer, said oxide layer forming a free surface of the implant for adhesion of soft tissue thereto; and wherein said main body portion comprises a polymeric velour fabric.
Claim 11
Dependent Claim
67 words
A soft tissue implant, comprising: a flexible main body portion having tissue-facing surfaces; a thin non-porous layer of pure titanium covering said tissue-facing surfaces of said main body portion; a thin layer of titanium oxide covering said pure titanium layer, said oxide layer forming a free surface of the implant for adhesion of soft tissue thereto; and wherein said main body portion comprises a polymeric velour fabric.
Claim 12
Dependent Claim
26 words
A soft tissue implant as in claim 1, wherein said main body portion comprises a flexible material to which a coating of pure titanium will adhere.
Claim 13
Dependent Claim
27 words
A soft tissue implant as in claim 1, wherein said main body portion comprises a stretchable polymeric film to which a coating of pure titanium will adhere.
References Cited (Backward Citations)
US3557795A
Cited
US3677795A
Cited
US3952334A
Cited
US4374669A
Cited
US4149277A
Cited
US4272855A
Cited
US4531916A
Cited
US4588667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-02 | 1993-04-03 | 1993-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-02 | 1997-04-03 | 1997-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-02 | 2001-04-03 | 2001-10-03 | $7700.00 | Window Closed / Lapsed |