Title:
CIRCUITRY TO ALLOW LOW CURRENT OPERATION OF A DEVICE CAPABLE OF DETERMINING A BLOOD PROPERTY
Document Type and Number:
WIPO Patent Application WO/2016/081262
Kind Code:
A3
Abstract:
Systems, methods, and devices of the various embodiments provide a device capable of determining a blood property based at least in part on the measurement of the amount of light received by a receiver circuit with a limited current capacity by charging a capacitor with a low voltage power supply and intermittently discharging the capacitor through a light emitting diode. In some embodiments the device may be a pulse oximeter capable of taking blood oxygen readings. In some embodiments the device may be a heart rate monitor to determine a heart rate based on an amount of light passed through tissue. The various embodiments may enable pulse oximeters and/or heart rate monitors to be incorporated into small unobtrusive body patches, while enabling the pulse oximeters to operate from a power output equivalent to that of a small coin cell battery or printed cell battery.
Inventors:
BALLAM ROBERT SCOTT (US)
GANTON ROBERT BRUCE (US)
GANTON ROBERT BRUCE (US)
Application Number:
PCT/US2015/060273
Publication Date:
August 25, 2016
Filing Date:
November 12, 2015
Export Citation:
Assignee:
QUALCOMM INC (US)
International Classes:
A61B5/024; A61B5/1455; A61B5/026
Domestic Patent References:
| WO2003024325A2 | 2003-03-27 | |||
| WO2005082237A1 | 2005-09-09 |
Foreign References:
| EP1722673B1 | 2009-04-22 | |||
| US6226539B1 | 2001-05-01 | |||
| US20070120542A1 | 2007-05-31 | |||
| US20050187453A1 | 2005-08-25 | |||
| US20130324855A1 | 2013-12-05 | |||
| US20150257663A1 | 2015-09-17 | |||
| US20150289791A1 | 2015-10-15 |
Attorney, Agent or Firm:
HANSEN, Robert M. et al. (PLLC11800 Sunrise Valley Drive 15th Floo, Reston Virginia, US)
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