EP0399782A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Modifying a membrane for use as a graft
Assignee: 3M Co
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Filing: 1990-05-22
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Granted: —
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Expires: 2010-05-22
Abstract
Abstract Disclosed is a cohesive membrane (1) useful in tissue grafting having at least one perforation therein, which preferably further has a handle (2) projecting angularly at least about 500 µm from one surface of the membrane. The invention relates particularly to tympanic membrane repair.
Inventors
- 👤 Matthew T. C/O Minnesota Mining And Scholz
- 👤 Paul H. C/O Minnesota Mining And Stypulkowski
- 👤 David C. C/O Minnesota Mining And Muchow
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 18:17
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/36; A61L27/3641; A61F; A61F2/00; A61F2/02; A61F2/18; A61L27/14; A61L27/16; A61L27/18; A61L27/22; A61L27/24; A61F2002/183; A61F2310/00; A61F2310/00005; A61F2310/00365; A61L2430/00; A61L2430/14
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
36 words
A cohesive membrane useful in tissue grafting having at least one perforation therein wherein the perforation has a minimum cross dimension greater than about 50 µm and a maximum cross dimension less than about 400 µm.
Claim 2
Dependent Claim
36 words
A cohesive membrane useful in tissue grafting having at least one perforation therein wherein the perforation has a minimum cross dimension greater than about 50 µm and a maximum cross dimension less than about 400 µm.
Claim 3
Dependent Claim
14 words
The membrane of claim 1 wherein the perforation has edges projecting from the membrane.
Claim 4
Dependent Claim
17 words
The membrane of claim 1 wherein the film has a thickness between about 0.1 and 0.5 mm.
Claim 5
Dependent Claim
21 words
The membrane of claim 2 further having a handle projecting at least about 500 µm from one surface of the membrane.
Claim 6
Dependent Claim
21 words
A non-toxic membrane useful in tissue grafting having a handle projecting at least 500 µm from one surface of the membrane.
Claim 7
Dependent Claim
21 words
A non-toxic membrane useful in tissue grafting having a handle projecting at least 500 µm from one surface of the membrane.
Claim 8
Dependent Claim
20 words
The membrane of claim 5 wherein the handle comprises a suture, the ends of which are anchored in the membrane.
Claim 9
Independent Claim
14 words
A method comprising the step of perforating a non-toxic membrane useful in tissue grafting.
Claim 10
Independent Claim
14 words
A method comprising the step of perforating a non-toxic membrane useful in tissue grafting.
Claim 11
Dependent Claim
35 words
The method of claim 7 comprising perforating the membrane to obtain at least one perfcration having a minimum cross dimension greater than about 50 µm and a maximum cross dimension less than about 400 µm.
Claim 12
Dependent Claim
26 words
The method of claim 7 wherein perforating is effected using parallel, pyramidal spikes projecting from a plate and located between about 200 and 500 µm apart.
Claim 13
Dependent Claim
35 words
Use of a membrane in preparing a membrane for repairing the eardrum of a mammal by surgically applying a membrane to the eardrum wherein the membrane comprises the membrane of any one of claims 1-6.
References Cited (Backward Citations)
No citation records indexed.
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