Superabsorbent, freeze dried hydrogels for medical applications
US8795709B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2006 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Feb 18, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/0065
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Methods are provided for making freeze dried hydrogel and structures therefrom that may be introduced into a patient's body for medical applications. Precursor components are combined to initiate crosslinking. The combined precursor components are placed in a chilled tray, and allowed to crosslink to a desired level of complete crosslinking before and/or after being placed onto the tray. The partially crosslinked hydrogel is frozen and freeze dried. After freeze drying, the hydrogel is conditioned to substantially complete crosslinking, and formed into one or more structures, e.g., plugs, hemostatic, or other medical devices. For example, the hydrogel may be cut, machined, rolled, folded, compressed, and/or cored into that may be loaded into delivery devices that may be introduced into a body to implant or otherwise deliver the structures into the body, e.g., to seal a puncture or other passage through tissue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.