Gas generation dispenser apparatus and method for on-demand fluid delivery
US8113390B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2007 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Nov 18, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/8231
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An on-demand fluid dispenser to dispense fluid in response to gas generation by a gas cell. The on-demand fluid dispenser includes an expandable gas chamber, a fluid chamber, and an on-demand gas cell. The expandable gas chamber includes a moveable plunger forming a wall of the expandable gas chamber. The moveable plunger also forms a wall of the fluid chamber. The on-demand gas cell is configured to generate the gas on demand. The on-demand gas cell is also configured to direct the gas to the expandable gas chamber to expand the expandable gas chamber. Expansion of the expandable gas chamber moves the moveable plunger to reduce a volume of the fluid chamber and to dispense an amount of fluid from the fluid chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.