Dehydration of hydrogels

Details Dehydration of hydrogels Dehydration of hydrogels

1993-09-16

1996-06-04

Isabella, David

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

623 11, 623901, 264340, 264344, 34475, 236 44C, A61F 244, F26B 300

Patent

active

055228984

ABSTRACT:
Novel prosthetic nuclear implants for insertion into vertebral discs are prepared by dehydrating hydrated bulky hydrogel discs under specific conditions so as to reduce the water content as low as possible (down to about 10% by weight) but without distortion of the implants, without the formation of concavities and sharp edges, and without changing the shape of the hydrated implant.

REFERENCES:
patent: 3234659 (1966-02-01), Smith
patent: 3760045 (1973-09-01), Thiele et al.
patent: 4663358 (1987-05-01), Hyoa et al.
patent: 4808353 (1989-02-01), Mambu et al.
patent: 5012503 (1991-04-01), Mambu et al.
patent: 5047055 (1991-09-01), Bao
patent: 5314478 (1994-05-01), Oka et al.
Journal of Applied Polymer Science; Y. T. Shah and J. H. Porter, vol. 17, pp. 605-618 (1973).
European Polymer Journal; N. A. Peppas, vol. 12, pp. 495 to 498, Pergamon Press, 1976.

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