Unlock instant, AI-driven research and patent intelligence for your innovation.

Continuous Blood Pressure Measurement

a continuous blood pressure and measurement technology, applied in the field of human blood pressure measurement, can solve the problem of the upper limit of the sampling frequency of 1 ghz

Pending Publication Date: 2020-08-06
SENSIFREE
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a cardiovascular model that can accurately track the pressure of a person's arteries for extended periods of time, even during a medical procedure. The model uses a calibration process that ensures accuracy for a specific person and can be repeated at any time to ensure continued accuracy. The model is calibrated by fitting the output of the model to the actual pressure measurements using harmonic frequencies. This processing system uses a single calibration and accurately monitors the pressure of a person's arteries during a medical procedure. The invention is useful for medical professionals who need to accurately monitor the pressure of a person's arteries.

Problems solved by technology

If conductive cabling is used to carry the sensor signal to remote processing circuitry, signal dispersion in the cabling may result in a sampling frequency upper limit of 1 GHz.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Continuous Blood Pressure Measurement
  • Continuous Blood Pressure Measurement
  • Continuous Blood Pressure Measurement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0226]FIG. 1 shows system 100 of a first embodiment and their structural interrelationship with arm 101 of a subject. System 100 comprises PCM 103, cuff 110, and tracking transducer 102.

[0227]Tracking transducer 102 comprises a PPG transducer and is mounted on a subject's finger 106. Cable 107 connects tracking transducer 102 to PCM 103. Cuff 110 is mounted around a subject's arm. Two tubes 109 connect cuff 110 to PCM 103. Cuff 110, tubes 109, and PCM 103 comprise an oscillometric cuff based sphygmomanometer. Preferably, tracking transducer 102 obtains signals from a region of the subject whose blood flow is not cut off by cuff 110, such as a finger on the opposite are as the cuff

[0228]PCM 103 comprises display 104 and user controls 108.

[0229]Display 104 can preferably display graphic representation of biometric data versus time 104. Biometric data versus time, as shown in FIG. 1, may include arterial pressure. Display 104 can preferably display numerical data 105 representing time ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

We disclose a system and method for estimating values of hemodynamic parameters of a subject, by calibrating arterial pressure during one time and tracking arterial pressure at another time.

Description

RELATED APPLICATIONS[0001]U.S. provisional application 62 / 609,435 titled “Estimating the relationship between MAP value and pulse amplitude and methods to achieve so,” is hereby incorporated herein by reference.BACKGROUNDField of the Invention[0002]This invention relates to measurement of human blood pressure values (BPVs). Sphygmomanometers, tonometers, and Penaz devices, for measuring blood pressure, are known. See for example U.S. Pat. No. 5,579,776 (cuff); U.S. Pat. No. 6,413,223 (tonometer); and U.S. Pat. No. 9,107,588 (Penaz device). Hemodynamic parameters include Mean Arterial Pressure (MAP), Pulse Pressure (PP), Systolic pressure (Ps), Diastolic pressure (Pd), and Stroke Volume Variation (SVV).[0003]A medical practitioner normally uses a manual sphygmomanometer and a stethoscope to determine Ps and Pd. A convention formula for estimating MAP from Ps, and Pd is:MAP=⅔Pd+⅓Ps  (1)[0004]Oscillometric cuff based sphygmomanometers may determine MAP, Ps, and Pd directly from pressur...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61B5/022A61B5/00
CPCA61B5/02225A61B5/72A61B5/6843A61B2560/0223A61B5/02A61B5/02028A61B5/02108A61B5/022A61B5/7257A61B5/7235A61B5/6826A61B5/14551A61B5/6824A61B5/7275A61B5/021A61B5/02427A61B5/02444A61B5/7225A61B5/742G16H50/50A61B5/0004A61B5/743
Inventor BARAK, ILANAGMON, ERANKLEIN, ROINEUBERGER, NADAVNOMAZOV, ALEXEI
Owner SENSIFREE