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Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...

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Related Experiment Video

Updated: May 25, 2026

Functional MRI in Conjunction with a Novel MRI-compatible Hand-induced Robotic Device to Evaluate Rehabilitation of Individuals Recovering from Hand Grip Deficits
07:34

Functional MRI in Conjunction with a Novel MRI-compatible Hand-induced Robotic Device to Evaluate Rehabilitation of Individuals Recovering from Hand Grip Deficits

Published on: November 23, 2019

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Conductive Hydrogel-Based Grip Pressure Measuring Device for Hand Rehabilitation.

Jose Garcia-Delgado, Cristina Martin-Salas, Jose L Polo

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |December 3, 2025
    PubMed
    Summary
    This summary is machine-generated.

    Researchers developed a new grip pressure sensor using a flexible hydrogel for hand rehabilitation. This device accurately measures low-pressure variations, aiding in monitoring and controlling recovery for neuromuscular conditions.

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    Area of Science:

    • Biomedical Engineering
    • Materials Science
    • Rehabilitation Technology

    Background:

    • Accurate grip pressure monitoring is crucial for effective hand rehabilitation.
    • Existing sensors often lack the sensitivity or flexibility needed for detecting subtle pressure changes.

    Purpose of the Study:

    • To develop a novel, highly sensitive grip pressure measuring device for hand rehabilitation.
    • To utilize a 2-hydroxyethyl acrylate (2-HEA)-based conductive hydrogel for sensor fabrication.

    Main Methods:

    • Fabrication of a 2-HEA conductive hydrogel using UV-initiated 3D printing.
    • Characterization of hydrogel mechanical properties (Young's modulus, fatigue resistance).
    • Evaluation of electrical properties using an impedance analyzer and a four-probe method with custom electronics.

    Main Results:

    • The hydrogel exhibited robust mechanical properties (Young's modulus: 44.8±8.0 kPa) and high fatigue resistance.
    • The sensor demonstrated high sensitivity (8.54 kΩ per 1% deformation).
    • Experimental validation confirmed the device's accuracy and usability in real-time pressure control tasks.

    Conclusions:

    • The 2-HEA hydrogel-based sensor is a promising tool for advanced rehabilitation monitoring.
    • The device excels at detecting low-pressure variations, beneficial for early-stage rehabilitation and neuromuscular conditions.
    • The novel air-chamber design and four-probe method enhance measurement precision.