Non-invasive blood pressure sensor
A blood pressure sensor, sensor technology, applied in the direction of sensors, blood vessel evaluation, medical science, etc., can solve the problem of not having a single device
Inactive Publication Date: 2019-09-03
BASIL LEAF TECH LLC
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Problems solved by technology
[0004] Although various devices exist for measuring blood pressure, no single device can reliably measure blood pressure in a small form factor without user training
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[0024] Aspects of the invention provide a non-invasive blood pressure sensor. Without being bound by theory, applicants believe that the optical absorption of blood within a vessel changes in a pulsating manner such that application of multiple wavelengths of light will result in different transmission, reflection and / or transmissiveness depending on the blood content of the subject The spectrum and the time between these measured pulses are based on the subject's blood pressure changes.
[0025] refer to Figure 1A , one embodiment of the present invention provides a non-invasive blood pressure sensor 100 comprising a sensor body 102 , one or more light sources 104 and one or more photodetectors 106 .
[0026] In one embodiment of the invention, a single sensor body 102 may contain two light source and photodetector pairs that, when positioned on the patient's body, may be spaced from each other in order to detect the time between optical fluctuations along a blood vessel. ...
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A non-invasive blood pressure sensor comprises tissue-matable sensor bodies that include a first light-source-and-photodetector pair disposed on one of the sensor bodies in a pre-determined spatial relationship for a proximal anatomical location, and a second light-source-and-photodetector pair disposed on one of the sensor bodies in a pre-determined spatial relationship for a distal anatomical location. The sensor bodies may be mounted on a support structure acting as a jig for aligning and / or spacing them. A controller receives signals from the photodetectors and calculates blood pressure byidentifying peaks and valleys in time series data obtained from the photodetectors, and calculating the subject's blood pressure based on differences in time between: (i) a proximal peak detected bythe first light-source-and-photodetector pair and a distal peak detected by the second light-source-and-photodetector pair; and (ii) a proximal peak detected by the first light-source-and-photodetector pair and a distal valley detected by the second light-source-and-photodetector pair.
Description
[0001] Cross References to Related Applications [0002] This application claims the benefit of priority to U.S. Provisional Patent Application No. 62 / 417,231, filed November 3, 2016, and U.S. Provisional Patent Application No. 62 / 432,171, filed December 9, 2016, which U.S. Patent The entire disclosures of both applications are hereby incorporated by reference herein. technical field [0003] The present invention relates generally, and more particularly, to blood pressure measuring devices, and more particularly, to automatic measurement of blood pressure in the human body without the need for conventional inflatable rubber cuffs of conventional blood pressure monitors, stethoscopes, or healthcare professionals skilled in their use. Blood pressure sensor and method. Background technique [0004] Although various devices exist for measuring blood pressure, no single device can reliably measure blood pressure in a small form factor and without user training. Contents of t...
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IPC IPC(8): A61B5/022
CPCA61B5/6829A61B5/6831A61B5/6838A61B5/02125A61B5/6822A61B5/6824A61B5/6826A61B2562/043A61B2562/046A61B5/02427A61B5/02141A61B5/6806A61B5/021A61B5/02108A61B5/02116
Inventor B·M·哈里斯G·C·哈里斯E·L·赫普勒C·F·哈里斯
Owner BASIL LEAF TECH LLC