Methods and apparatus for buffering anesthetics
US8162917B2 · kind B2 · utility
14Cited by
50References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2009 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Jun 11, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61J1/2072
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device for delivering buffer solution into a buffer cartridge comprises a needle assembly and a pusher. The septa of a buffer cartridge and an anesthetic cartridge are advanced onto a transfer needle, and the pusher advances a plunger into the buffer cartridge to deliver buffer through the transfer needle into the anesthetic cartridge. A separate exhaust needle allows excess anesthetic from the anesthetic cartridge to be exhausted. A compression member is usually provided to maintain a force against the plunger on the buffer cartridge to pressurize and stabilize the contents during sterilization and/or storage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.