Dehydration of hydrogels
US5522898A · kind A · utility
84Cited by
7References
9Claims
0Family size
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Inventor
Key dates
| Filing date | Sep 16, 1993 |
| Grant date | Jun 4, 1996 |
| Priority date | — |
| Expiry date | Sep 16, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/901
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.