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Circuits that allow low current operation of devices capable of determining blood properties

A technology for circuits, devices, applied in the field of circuits that allow low current operation of devices capable of determining blood properties, and can solve problems such as incompatibility

Active Publication Date: 2021-10-08
PHILIPS HEALTHCARE INFORMATICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, current pulse oximeter designs are not conducive to being powered by ultra-low power sources such as small coin cell batteries, and are therefore not suitable for incorporation into body-worn patches

Method used

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  • Circuits that allow low current operation of devices capable of determining blood properties
  • Circuits that allow low current operation of devices capable of determining blood properties
  • Circuits that allow low current operation of devices capable of determining blood properties

Examples

Experimental program
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Embodiment Construction

[0016] Various embodiments will be described in detail with reference to the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. References made to particular examples and implementations are for purposes of illustration and are not intended to limit the scope of the invention or the claims.

[0017] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations.

[0018] Pulse oximeters monitor oxygen levels in the bloodstream. Pulse oximeters typically operate by sending light at two different wavelengths through a body part and measuring the relative difference in amplitude of the original and received light at the two different wavelengths. For example, one wavelength may be red while another wavelength is inf...

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PUM

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Abstract

The systems, methods and devices of various embodiments provide devices capable of determining blood attributes based at least in part on measurements of the amount of light received by a receiver circuit, wherein a capacitor is charged with a low voltage power supply and intermittently discharged through a light emitting diode Instead, the receiver circuit has limited current capability. 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 for determining heart rate based on the amount of light passing through tissue. Various embodiments may enable a pulse oximeter and / or heart rate monitor to be incorporated into a small, unobtrusive body patch while enabling the pulse oximeter to operate on a power output equal to that of a small button cell or printed battery power output to operate.

Description

Background technique [0001] Continuous monitoring of vital signs with the ability to remotely monitor patient status is a growing field and incorporates multiple measurement capabilities into a single small, unobtrusive patch that can be worn by the patient for multiple days at a time (i.e., a body-worn patch) Competence within is a desirable characteristic. One such measurement is blood oxygen concentration, often achieved by a pulse oximeter. However, current pulse oximeter designs do not facilitate being powered by ultra-low power sources such as small coin cell batteries, and are therefore not suitable for incorporation into body worn patches. Contents of the invention [0002] The systems, methods, and devices of the various aspects provide devices capable of determining blood properties (e.g., taking blood oxygen and / or pulse readings) based at least in part on measurements of the amount of light received by a receiver circuit while being powered by a power source wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/00A61B5/0205A61B5/1455
CPCA61B5/0205A61B5/02427A61B5/02438A61B5/0261A61B5/14552A61B5/6816A61B5/6826A61B5/7239A61B5/7278A61B5/7292A61B2560/0204A61B2560/0214A61B2560/0412A61B2562/0238A61B2562/164
Inventor R·S·巴拉姆R·B·甘顿
Owner PHILIPS HEALTHCARE INFORMATICS INC