Controller expansion sphincter augmentation media
US5855615A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1996 |
| Grant date | Jan 5, 1999 |
| Priority date | — |
| Expiry date | Jun 7, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P13/10
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A composition for injecting into tissues surrounding the urethra or ureter. It comprises a plurality of physiologically acceptable solid polymer particles dispersed in a physiologically acceptable biodissipatable liquid carrier. The polymer comprises a hydrophilic component. The solid polymer particles are a glycerine insoluble poly(ethylene oxide) (PEO) polymer or copolymer or a mineral oil insoluble polyvinylpyrrolidone polymer or copolymer. The plurality of solid polymer particles are capable of hydrating and upon hydration of absorbing at least about 30% water and of swelling to a predetermined volume. The solid particles are substantially insoluble in body fluids and substantially insoluble in and non-swellable by the liquid carrier. The composition is especially suitable in treating patients with urinary incontinence and patients with vesicoureteral reflux via injection into the tissues around the urethra or ureter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.