Low power and personal pulse oximetry systems

• US 20050234317A1
• Filed: 03/21/2005
• Published: 10/20/2005
• Est. Priority Date: 03/19/2004
• Status: Abandoned Application

• Current Assignee: Masimo Corporation
• Original Assignee: Masimo Corporation
• Inventors: Kiani, Massi E.
• Application Number:
  US11/085,637
• Publication Number:
  US 20050234317A1
• Time in Patent Office: Days
• US Class Current: 600/323
• CPC Class Codes: A61B 2560/0209 adapted for power saving
• CPC Class Codes: A61B 2560/0431 Portable apparatus, e.g. comprising a handle or case
• CPC Class Codes: A61B 5/0002 Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network A61B5/07 takes precedence; transmission systems for measured values G08C; transmission H04B; transmission of digital information H04L; wireless communication networks H04W
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/6804 Garments; Clothes
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6838 Clamps or clips

Abstract

Personal pulse oximetry systems and methods are disclosed which provide monitoring, powering, and wireless communications for measurement of an individual'"'"'s blood oxygen levels in medical, military, or athletic applications. In an embodiment, at least one intensity signals is disabled so as to reduce power consumption.

Claims

1. A method of reducing power used in a pulse oximetry system, the method comprising the steps of:

receiving intensity signals generated by the detection of light attenuated by a fleshy medium;

processing said intensity signals so as to provide a physiological measurement; and

disabling at least one of said intensity signals so as to reduce power consumption.

2. The method according to claim 1 further comprising the step of:

establishing a baseline measurement responsive to at least another one of said intensity signals;

providing a subsequent measurement responsive to said at least another one of said intensity signals;

comparing said subsequent measurement to said baseline measurement; and

re-enabling said at least one of said intensity signals in response to said comparing step.

3. The method according to claim 1 wherein said disabling step comprises the substep of deactivating at least one emitter of a sensor adapted to attach to fleshy media.

4. The method according to claim 3 wherein said deactivating substep comprises the substep of disabling drive current to said at least one emitter.

5. A low power pulse oximetry method comprising the steps of:

establishing a baseline measurement responsive to at least one of first and second intensity signals generated by the detection of light having at least first and second wavelengths after absorption by constituents of pulsatile blood flowing within a fleshy medium;

providing a subsequent measurement responsive to at least one of said intensity signals;

comparing said subsequent measurement to said baseline measurement; and

based on said comparing, foregoing a signal processing technique relating to at least one of said intensity signals so as to reduce power consumption.

6. The low power pulse oximetry method according to claim 5, further comprising restarting said signal processing technique in response to said comparing step.

7. The low power pulse oximetry method according to claim 6 wherein:

said foregoing step comprises the substep of disabling drive current to a sensor emitter; and

said restarting step comprises the substep of enabling drive current to said emitter.

8. A monitoring system comprising:

a personal pulse oximeter configured to process one or more intensity signals indicative of one or more physiological parameters of a monitored patient;

a sensor configured to output the one or more intensity signals;

a wireless adapter configured to control communication between the personal pulse oximeter and the sensor; and

an external patient monitoring system capable of communicating with the personal pulse oximeter.

9. The monitoring system of claim 8, wherein the communication between the external patient monitoring system and the personal pulse oximeter includes location tracking data sufficient for the external patient monitoring system to track a location of the personal pulse oximeter.

10. The monitoring system of claim 8, wherein the external patient monitoring system includes software capable of determining a wireless communication protocol being used by the personal pulse oximeter and configures the external monitoring system to receive the data according to the protocol.

11. The monitoring system of claim 8, wherein the wireless adapter communicates signals through body tissue.