US5824015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for welding biological tissue
Assignee: Baxter Healthcare SA
•
Filing: 1995-06-05
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Granted: 1998-10-20
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Expires: 2015-06-05
Abstract
Abstract A method for joining or reconstructing biological tissue comprises providing a solid filler material in the form of a preformed sheet, where the sheet comprises collagen, gelatin or a mixture thereof. The filler material is placed over tissue. Radiofrequency energy or optical energy is thereafter applied to the filler material in an amount sufficient to melt or denature the filler material.
Inventors
- 👤 Philip N. Sawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:08
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/00491; A61B18/00; A61B18/18; A61L; A61L27/00; A61L27/14; A61L27/22; A61L27/24; A61F; A61F2310/00; A61F2310/00005; A61F2310/00365
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
79 words
A method of joining or reconstructing biological tissue, said method comprising the following steps: providing a solid filler material in the form of a preformed sheet, wherein the sheet comprises collagen, gelatin, or a mixture thereof; placing the filler material over said biological tissue prior to applying energy, and applying radiofrequency or optical energy to the filler material in an amount sufficient to melt or denature the filler material while said filler material is over the said biological tissue.
Claim 2
Independent Claim
79 words
A method of joining or reconstructing biological tissue, said method comprising the following steps: providing a solid filler material in the form of a preformed sheet, wherein the sheet comprises collagen, gelatin, or a mixture thereof; placing the filler material over said biological tissue prior to applying energy, and applying radiofrequency or optical energy to the filler material in an amount sufficient to melt or denature the filler material while said filler material is over the said biological tissue.
Claim 3
Dependent Claim
22 words
A method as in claim 1, wherein the filler material is cut to a desired size prior to placing on the tissue.
Claim 4
Dependent Claim
19 words
A method as in claim 1, wherein the energy is radiofrequency energy applied from an inert gas beam coagulator.
Claim 5
Dependent Claim
21 words
A method as in claim 1, further comprising applying a tissue adhesive to the tissue prior to placing the filler material.
Claim 6
Independent Claim
113 words
A method of joining or restructuring biological tissue, said method comprising the following steps: providing a filler material in the form of a preformed sheet which fuses to said biological tissue upon the application of energy, wherein the filler material comprises collagen, gelatin, or a mixture thereof; placing the filler material over said biological tissue to be joined or restructured prior to applying energy; and applying radiofrequency energy to the filler material in an amount sufficient to melt or denature the filler material and the said biological tissue after said filler material has been placed over the said biological tissue, wherein the radiofrequency energy is applied from an inert gas beam radiofrequency device.
Claim 7
Independent Claim
113 words
A method of joining or restructuring biological tissue, said method comprising the following steps: providing a filler material in the form of a preformed sheet which fuses to said biological tissue upon the application of energy, wherein the filler material comprises collagen, gelatin, or a mixture thereof; placing the filler material over said biological tissue to be joined or restructured prior to applying energy; and applying radiofrequency energy to the filler material in an amount sufficient to melt or denature the filler material and the said biological tissue after said filler material has been placed over the said biological tissue, wherein the radiofrequency energy is applied from an inert gas beam radiofrequency device.
Claim 8
Dependent Claim
45 words
A method as in claim 5, wherein the radiofrequency inert gas beam device is operated at between about 20 and 120 watts for about 1 to 60 seconds, so that about 20 to 1800 joules are delivered to the filler material and the biological tissue.
Claim 9
Dependent Claim
45 words
A method as in claim 6, wherein the radiofrequency inert gas beam device is operated at between about 35 and 80 watts for about 5 to 40 seconds, so that about 100 to 1200 joules are delivered to the filler material and the biological tissue.
Claim 10
Dependent Claim
72 words
An improved method for joining or reconstructing biological tissue wherein a collagen- or gelatin-containing material is placed over the tissue and energy is thereafter applied to fuse the material and tissue together, wherein the improvement comprises the step of applying radiofrequency energy to the material and said tissue under conditions which result in about 20 to 1800 joules of energy being delivered to the collagen or gelatin-containing material and the said tissue.
Claim 11
Dependent Claim
72 words
An improved method for joining or reconstructing biological tissue wherein a collagen- or gelatin-containing material is placed over the tissue and energy is thereafter applied to fuse the material and tissue together, wherein the improvement comprises the step of applying radiofrequency energy to the material and said tissue under conditions which result in about 20 to 1800 joules of energy being delivered to the collagen or gelatin-containing material and the said tissue.
Claim 12
Dependent Claim
20 words
An improved method as in claim 8, wherein the collagen-containing material is in the form of a preformed a sheet.
Claim 13
Dependent Claim
26 words
An improved method as in claim 8, wherein the radiofrequency device is operated at between about 20 and 120 watts for about 1 to 60 seconds.
Claim 14
Dependent Claim
43 words
An improved method as in claim 8, wherein the radiofrequency device is operated at between about 35 and 80 watts for about 5 to 30 seconds, so that about 100 to 1200 joules are delivered to the collagen-containing material and the biological tissue.
Claim 15
Dependent Claim
31 words
An improved method as in claim 8, wherein the collagen-containing material is composed of a material selected from the group consisting of native collagen, collagen cast with a plasticizer, and gelatin.
References Cited (Backward Citations)
US2011169A
Cited
US2510205A
Cited
US2618267A
Cited
US2708933A
Cited
US2808833A
Cited
US3527224A
Cited
US3903891A
Cited
US3578939A
Cited
US3742955A
Cited
US3858586A
Cited
US3834392A
Cited
US3991764A
Cited
US4100390A
Cited
US4040426A
Cited
US4060088A
Cited
SU1091933A1
Cited
US4618885A
Cited
US4672969A
Cited
US4854320A
Cited
US5140984A
Cited
US5002051A
Cited
US4733660A
Cited
US4889120A
Cited
US4638800A
Cited
US4708137A
Cited
US4892098A
Cited
US4633870A
Cited
US4640279A
Cited
US4781175A
Cited
US4901720A
Cited
US4943290A
Cited
US4878492A
Cited
US4930504A
Cited
EP0330135A2
Cited
US5201745A
Cited
US4929246A
Cited
US5021452A
Cited
EP0405429A2
Cited
US5041110A
Cited
WO1991004073A1
Cited
US5071417A
Cited
US5207670A
Cited
WO1992002238A1
Cited
US5292362A
Cited
US5209776A
Cited
EP0480293A1
Cited
US5410016A
Cited
US5219895A
Cited
US5354336A
Cited
JPH04288165A
Cited
EP0526756A1
Cited
WO1993003793A1
Cited
US5272716A
Cited
US5207691A
Cited
WO1993017669A1
Cited
US5290272A
Cited
US5372585A
Cited
US5334191A
Cited
US5409481A
Cited
US5292253A
Cited
US5336221A
Cited
US5354323A
Cited
US5330974A
Cited
EP0640315A1
Cited
US5403312A
Cited
US5421923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-10-19 | 2002-04-20 | 2002-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-10-19 | 2006-04-20 | 2006-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-10-19 | 2010-04-20 | 2010-10-20 | $7700.00 | Window Closed / Lapsed |