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Systolic pressure calibration

A systolic and systolic technology, used in medical science, diagnosis, cardiac catheterization, etc.

Inactive Publication Date: 2020-01-03
EDWARDS LIFESCIENCES CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to gradual pressure decay (decay) closer to the periphery and pressure waveform distortion, finger blood pressure can deviate from cuff pressure, there is currently no good method to sufficiently accurately calibrate finger blood pressure volume clamp measurements

Method used

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  • Systolic pressure calibration
  • Systolic pressure calibration
  • Systolic pressure calibration

Examples

Experimental program
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Effect test

Embodiment Construction

[0014] Embodiments of the invention may relate to a method for measuring systolic arterial blood pressure in a finger, the method comprising: placing a cuff around a patient's finger, the cuff including an inflatable bladder and a pulse sensor to detect arterial pulses in the finger ; inflate the pouch of the finger cuff until the cuff exerts a first pressure on the finger that is greater than the systolic pressure to be measured; de-expand the pouch of the cuff until the cuff applies a second pressure on the finger that is greater than the systolic pressure to be measured; The second pressure is less than the systolic blood pressure to be measured; monitoring an arterial pulse in the finger with a pulsation sensor; and obtaining a systolic arterial pressure measurement of the finger based on the pressure applied by the cuff to the finger and the arterial pulse in the finger. As will be described, various techniques are utilized to obtain systolic arterial blood pressure measur...

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PUM

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Abstract

The present invention discloses a method for measuring systolic arterial blood pressure of a patient utilizing a finger cuff including an inflatable bladder and a pulsatility sensor that detects arterial pulsatility in a finger of the patient, the method comprising: placing the finger cuff around the finger of the patient; inflating the bladder of the finger cuff until the finger cuff applies a first pressure to the finger, the first pressure being greater than the systolic pressure to be measured; deflating the bladder of the finger cuff until the finger cuff applies a second pressure to thefinger, the second pressure being less than the systolic pressure to be measured; monitoring the arterial pulsatility in the finger with the pulsatility sensor; and obtaining a measurement of the systolic arterial blood pressure based on pressure applied to the finger by the finger cuff and the arterial pulsatility in the finger.

Description

technical field [0001] Embodiments of the present invention relate to non-invasive blood pressure measurement using finger cuff and volume clamp methods and using systolic blood pressure calibration. Background technique [0002] Volume clamping is a technique for non-invasive blood pressure measurement in which pressure is applied to a subject's digit such that arterial pressure can be balanced by the time-varying pressure to maintain a constant arterial volume. In a properly installed and calibrated system, the applied time-varying pressure is equal to the arterial blood pressure in the finger. The applied pressure can be measured as a function of time to provide a reading of the patient's arterial blood pressure. [0003] This can be achieved by finger cuffs arranged around the patient's fingers. The cuff may include an infrared light source, an infrared sensor, and an inflatable bladder. Infrared light can be sent through the finger where the digital artery is present...

Claims

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Application Information

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IPC IPC(8): A61B5/021A61B5/00
CPCA61B5/6826A61B2560/0223A61B5/02255A61B5/02241
Inventor B·韦斯特霍夫O·施拉亚C·J·J·E·范格伦根李培源J·范古多弗
Owner EDWARDS LIFESCIENCES CORP
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