Systems, devices, methods for delivering hydrogel compositions with self-purging to prevent clogging
US9662098B2 · kind B2 · utility
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2Claims
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Key dates
| Filing date | Feb 3, 2014 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Feb 3, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00942
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A hydrogel composition is formed by conveying separate first and second liquid components subject to a selectively applied application pressure P(A) into an outlet path for mixing and discharge. A liquid flushing agent is automatically conveyed into the outlet path subject to a substantially constantly applied purge pressure P(P) when the application of P(A) is interrupted, to continuously flush residual hydrogel composition from the outlet path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.