Fluid infusion pump driver
US4639245A · kind A · utility
100Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1985 |
| Grant date | Jan 27, 1987 |
| Priority date | — |
| Expiry date | Dec 20, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18576
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A fluid infusion pump driver device for pumping fluid from the chamber of a disposable cassette. The pump driver includes a reciprocatable plunger which is driven by a stepping motor. The motor and plunger are coupled through a universal joint which provides a threaded connection translating the incremental angular movements of the motor into incremental linear movements of the plunger, and the plunger is coupled directly to the frame through a flexible leaf spring to prevent wear in the threaded connection from generating undue noise or creating accuracy problems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.