Method and system for measuring flow at patient utilizing differential force sensor
US7775127B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 20, 2009 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Mar 9, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/50
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A fluid delivery system and method for measuring flow at a patient utilizing a differential force sensor in order to precisely control the flow of fluid at very low flow rates. The system includes a fluid line through which a fluid is conveyed to the patient, and a flow controller that selectively varies a rate of flow of the fluid through the fluid line. The differential force sensor can be mounted very close to a point of entry of the fluid into the patient's body. An onboard communications device is controllably coupled to the flow controller and to the force sensor, responds to an output signal, and provides a feedback to the flow controller in a closed-loop process. The system can pump the fluid at a higher frequency until the flow rate is actually reached at the patient and then adjust to the flow rate needed to ensure patient health.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.