Means for using single force sensor to supply all necessary information for determination of status of medical pump
US7360999B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2003 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Jun 10, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/3331
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medical pump, for use with a cassette having a pumping chamber, includes a pumping element with a piston slider assembly which intermittently pressurizes the pumping chamber during a pumping cycle and has a piston head connected to a main body with a single pressure sensor positioned therebetween. A camshaft is associated with the pumping element, an inlet control element, and an outlet control element for closing the pumping chamber to flow when the pumping chamber is pressurized. A processing unit receives pressure and position data from the pressure sensor and a position sensor associated with the pumping element, and processes this data to determine the operating condition of the pump. The operating conditions determined include: blocked fluid flow, no fluid in the line, no cassette associated with the pump, proper pump priming, or proper valve sealing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.