Gas cell driven fluid delivery device for spill-resistant storage and use
US10696468B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2017 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Jul 26, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/14204
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An orientation independent delivery device including a replaceable cartridge that may be installed on a foundation. A cartridge includes a gas chamber, a delivery chamber, a gas cell, and a delivery aperture. The gas chamber includes a gas-side rigid portion and a gas-side flexible barrier. The gas-side flexible barrier is sealed to the gas-side rigid portion. The delivery chamber includes a delivery-side rigid portion and a delivery-side flexible barrier. The delivery-side flexible barrier is sealed to the delivery-side rigid portion and is oriented adjacent to the gas-side flexible barrier. The gas cell is coupled to the gas-side rigid portion of the gas chamber. The gas cell increases a gas pressure within the gas chamber to expand the gas-side flexible barrier. Expansion of the gas-side flexible barrier applies a compressive force to the delivery-side flexible barrier allowing a delivery material to escape from the delivery chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.