Prevention of premature gelling of delivery devices for pH dependent forming materials
US9445795B2 · kind B2 · utility
9Cited by
37References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2010 |
| Grant date | Sep 20, 2016 |
| Priority date | — |
| Expiry date | Sep 24, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00522
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present disclosure provides treatment of an apparatus, in embodiments a delivery device, which prevents premature gelling of any materials or precursor(s) of a pH dependent forming material, in embodiments a hydrogel, dispensed by the delivery device. The pH microenvironment near the surface of a lumen of the device, in embodiments the tip of a spray applicator through which the material to be dispensed is expelled from the device, may be controlled to prevent premature gelling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.