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Cardiac monitoring system and method

A monitoring system, heart technology, applied in the direction of cardiac catheterization, pulse rate/heart rate measurement, diagnostic recording/measurement, etc., can solve problems such as difficult to balance the accuracy of different time scales and pressure ranges

Pending Publication Date: 2022-03-11
NEDERLANDSE ORG VOOR TOEGEPAST NATUURWETENSCHAPPELIJK ONDERZOEK TNO
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] However, piezoelectric sensors typically generate time-dependent signals, which may require individual and continuous monitoring
It may also be difficult to balance accuracy for different time scales and pressure ranges

Method used

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  • Cardiac monitoring system and method
  • Cardiac monitoring system and method
  • Cardiac monitoring system and method

Examples

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Embodiment Construction

[0012] The terminology used to describe particular embodiments is not intended to be limiting of the invention. As used in this disclosure, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. The term "and / or" includes any and all combinations of one or more of the associated listed items. It will be understood that the terms "comprises" and / or "comprising" specify the presence of a described feature, but do not exclude the presence or addition of one or more other features. It will be further understood that when a particular step of a method is referred to as being a subsequent step of another step, that particular step may directly follow said other step, or may be performed before performing the particular step, unless otherwise stated. One or more intermediate steps. Also, it should be understood that when a connection between structures or components is described, unless stated otherwis...

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Abstract

A heart monitoring system (100) includes an array of force sensitive resistors (10), the array of force sensitive resistors spanning a sensor surface (50). Each resistor (10) is configured to vary a respective resistance value (R) as a function of an amount of static pressure (P) exerted by an object (200) on the sensor surface (50) at a respective position of the force sensitive resistor (10). The array of piezoelectric transducers (20) is interspersed among the array of force sensitive resistors (10). Each transducer (20) is configured to generate a respective time-dependent electrical signal (S) as a function of a respective vibration (F) exerted on the sensor surface (50) by the object (200) at a respective position of the transducer (20). The controller (30) is configured to determine the heart rate (H1) of the subject (200) from a combination of the measured resistance value (R) of the force sensitive resistor (10) and the time-dependent electrical signal (S) of the piezoelectric transducer (20).

Description

technical field [0001] The present disclosure relates to systems and methods for measuring heart rate. Background technique [0002] For example, piezoelectric sensors can be used to perform ballistocardiography (BCG) in a semi-contact manner through clothing or bedding / cushions such as chairs / beds to measure heart rate, respiration rate, and even pulse wave velocity. Preferably, the sensor needs to be close to the relevant part of the body to transmit the vibrations. Unfortunately, it is difficult to extract this contact information from sensor signals. Therefore, artefacts are common, and such artifacts are more serious when the position of the object is uncertain. [0003] A multi-element piezoelectric sensor for in-bed physiological measurements is described in US2018 / 0337325A1. The monitoring system may perform a first scan of all piezoelectric sensors. This first scan may be, for example, an advanced scan to roughly determine the position of the user along the mat....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0205A61B5/08A61B5/024A61B5/00
CPCA61B5/0205A61B5/721A61B5/7264A61B5/7267A61B5/0816A61B5/6892A61B5/02444A61B2562/0247A61B2562/066A61B5/1036A61B5/1102A61B5/02141A61B5/0255A61B5/6891
Inventor 艾兹格·康斯坦特·彼得·施密特斯达妮埃莱·拉伊泰里J·范登布兰德
Owner NEDERLANDSE ORG VOOR TOEGEPAST NATUURWETENSCHAPPELIJK ONDERZOEK TNO
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