Title:
DIFFERENTIAL FORCE SENSOR
Document Type and Number:
WIPO Patent Application WO/2010/048040
Kind Code:
A3
Abstract:
A differential force sensor method and apparatus for automatically monitoring manual injections through an intravenous line. The differential force sensor includes two piezoresistive sense die that are packaged in close proximity utilizing a number of packaging processes. The two piezoresistive sense die can be utilized to measure forces exerted on a diaphragm on either side of an orifice. The piezoresistive sense die can be packaged in close proximity to make intimate contact with the diaphragms on either side of the orifice. The differential force sensor further includes two plungers that make intimate contact with the diaphragm and transfer the force into the piezo-resistive sense dies. Additionally, one or more ASICs and microcontrollers can be utilized to provide thermal calibration and differential calculation.
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Inventors:
ECKHARDT TODD (US)
WADE RICHARD (US)
JONES RYAN (US)
WADE RICHARD (US)
JONES RYAN (US)
Application Number:
PCT/US2009/060951
Publication Date:
July 08, 2010
Filing Date:
October 16, 2009
Export Citation:
Assignee:
HONEYWELL INT INC (US)
ECKHARDT TODD (US)
WADE RICHARD (US)
JONES RYAN (US)
ECKHARDT TODD (US)
WADE RICHARD (US)
JONES RYAN (US)
International Classes:
A61M5/168; A61M5/00; G01N27/00; G01N27/10
Foreign References:
| US6229190B1 | 2001-05-08 | |||
| US20060000265A1 | 2006-01-05 | |||
| US4395915A | 1983-08-02 | |||
| US6612179B1 | 2003-09-02 | |||
| US4528855A | 1985-07-16 |
Other References:
KREMER H. ET AL: "Signal Conditioning Circuits for Sensors Frame ASICs or Modular Signal Conditioning", ANALOG MICROELECTRONICS, August 2000 (2000-08-01)
Attorney, Agent or Firm:
BEATUS, Carrie (Law Department AB/2B101 Columbia Road,P. O. Box 224, Morristown New Jersey, US)
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