Method of synthesizing swollen hydrogel for sphincter augmentation
US5902832A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1996 |
| Grant date | May 11, 1999 |
| Priority date | — |
| Expiry date | Aug 20, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S524/916
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A synthesis method is set forth for forming a physiologically acceptable composition comprising a plurality of physiologically acceptable hydrogel particles which have been swollen in a water solution containing a low molecular weight water soluble organic compound, the solution having the ability to swell the particles. The concentration of the organic compound is such that the resulting particles can be inserted, without use of a carrier liquid utilizing a hand driven hypodermic syringe. The swollen hydrogel particles are substantially insoluble in body fluids. The method comprises contacting not fully swollen hydrogel particles with the organic compound and with water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.