Fluid delivery apparatus and method
US5785688A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 1996 |
| Grant date | Jul 28, 1998 |
| Priority date | — |
| Expiry date | May 7, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/14252
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus (120) useful for, among other things, subcutaneous drug delivery includes a housing (124), a fluid reservoir (154) disposed within the housing for storing the fluid, a pump or pressurized chamber for pressurizing a driving gas and exerting a force on the fluid reservoir to expel the fluid reservoir's contents, and a needle (150) or absorbent pad fluidically communicating with the reservoir. The apparatus may further include a pump activation mechanism such as a button and an electrical circuit such that pushing the button activates a circuit and connects a battery (138) to a pump (126), and a pump control mechanism such as electrical circuitry to control the voltage gradient to a pump to control fluid delivery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.