Claims
- 1. An absorbable barrier membrane for guided tissue generation, comprising a lactic copolyester in which a polymerization catalyst is deactivated, as an essential component.
- 2. An absorbable barrier membrane according to claim 1, further comprising a calcium phosphate.
- 3. An absorbable barrier membrane according to claim 1, wherein the polymerization catalyst of the lactic copolyester is one which has been subjected to a deactivation treatment using at least one of chelating agents and acidic ester phosphates.
- 4. An absorbable barrier membrane according to claim 1, wherein the lactic copolyester contains a structural unit derived from lactic acid and a polyester structural unit derived from dicarboxylic acid and diol, and the content of the polyester structural unit derived from dicarboxylic acid and diol is from 2 to 60% by weight based on the total weight of the lactic copolyester.
- 5. An absorbable barrier membrane according to claim 4, wherein the lactic copolyester endures being folded at least 100 times accordng to a test for determination of folding endurance in accordance with JIS-P8115.
- 6. An absorbable barrier membrane according to claim 2, wherein the calcium phosphate is tricalcium phosphate.
- 7. An absorbable barrier membrane according to claim 1, the membrane having pores of 0.1 to 200 μm in diameter.
- 8. An absorbable barrier membrane according to claim 2, wherein the membrane is a nonwoven fabric comprising lactic copolyester and calcium phosphate.
- 9. A method for regeneration of a mandible, comprising use of the absorbable barrier membrane of claim 1.
- 10. A method for regeneration of periodontal tissue, comprising use of the absorbable barrier membrane of claim 1.
- 11. A method for regeneration of a defective tubulous bone, comprising use of the absorbable barrier membrane of claim 1.
- 12. A method for regeneration of defective tubulous bone according to claim 11, wherein the defective tubulous bone possesses a segmental bone defect in which both ends of the bone are in separate segments.
Priority Claims (2)
Number |
Date |
Country |
Kind |
9-072475 |
Mar 1997 |
JP |
|
10-006120 |
Jan 1998 |
JP |
|
Parent Case Info
This application is a Continuation-In-Part of application Ser. No. 08/712,994, filed Sep. 10, 1996, new U.S. Pat. No. 5,844,066.
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Number |
Name |
Date |
Kind |
4961707 |
Magnusson et al. |
Oct 1990 |
|
5676699 |
Gogolewski et al. |
Oct 1997 |
|
5844066 |
Kakizawa |
Dec 1998 |
|
Foreign Referenced Citations (2)
Number |
Date |
Country |
10000229 |
Jan 1998 |
JP |
10036651 |
Feb 1998 |
JP |
Non-Patent Literature Citations (1)
Entry |
Grant, Grant and Hackh's Chemical Dictionary, McGraw Hill, p. 106, 1987.* |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
08/712994 |
Sep 1996 |
US |
Child |
09/044162 |
|
US |