Surgery – Instruments – Sutureless closure
Patent
1998-04-22
1999-11-30
Buiz, Michael
Surgery
Instruments
Sutureless closure
606 76, 606 78, 606216, A61B 1708
Patent
active
059934751
ABSTRACT:
A biodegradable device for repairing torn meniscal cartilage comprising a shaft and tissue gripping means at both ends. One end is adapted to pierce the tissue and the opposite end is adapted to fit a driver. The central portion of the device is essentially smooth along its length. The device has been subjected to a drawing operation after fabrication leaving the molecules in the shaft in a higher state of residual stress. When the device is exposed to an aqueous environment, the water absorbed by the polymer lowers the glass transition temperature of the polymer. Lowering glass transition temperature allows increased molecular mobility causing the device to contract. The contraction pulls the torn tissues into close apposition during healing. As the tissue heals, the tension is released by the polymer resorbing.
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Krebs Steven L.
Lin Steve T.
Bristol-Myers Squibb Co.
Buiz Michael
Pham Tina T. D.
Reeves Cary R.
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