Method and apparatus for in situ formation of hydrogels
US6165201A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1999 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | Sep 3, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/0071
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Methods and apparatus of forming in situ tissue adherent barriers are provided using a sprayer capable of applying two or more viscous crosslinkable solutions to tissue. The sprayer comprises separate spray nozzles for each of two or more crosslinkable solutions, wherein each nozzle is either surrounded by an annular gas flow outlet or in communication with a gas-pressurized chamber, and also may include valves that prevent backflow through the supply lines carrying the crosslinkable solutions, and a venting system for venting excess pressure for laparoscopic applications In the presence of gas flow, the crosslinkable solutions are atomized and mixed to form a spray. Multi-component hydrogel systems suitable for use with the inventive methods and apparatus are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.