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Related Concept Videos

Assessment of radial pulse01:11

Assessment of radial pulse

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Related Experiment Video

Updated: Jan 31, 2026

Engineering Biological-Based Vascular Grafts Using a Pulsatile Bioreactor
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A compact pulsatile simulator based on cam-follower mechanism for generating radial pulse waveforms.

Tae-Heon Yang1, Gwanghyun Jo2, Jeong-Hoi Koo3

  • 1Department of Electronic Engineering, Korea National University of Transportation, Chungju-si, Chungbuk, Republic of Korea.

Biomedical Engineering Online
|January 4, 2019
PubMed
Summary

A novel cam-based simulator accurately replicates human pulse waveforms, offering a cost-effective tool for medical research and training. This device can generate diverse pulse patterns for various conditions and age groups.

Keywords:
Augmentation indexCamRadial artery pressure waveformRadial pulsation simulator

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Area of Science:

  • Biomedical Engineering
  • Cardiovascular Physiology
  • Medical Device Design

Background:

  • Growing need for affordable, portable, and versatile pulsation simulators for medical applications.
  • Existing simulators lack the ability to generate diverse pulse waveforms realistic to human physiology.
  • Development of a compact pulsation simulator using a pneumatic actuator and cam-follower mechanism is proposed.

Purpose of the Study:

  • To design and construct a novel cam-based pulsatile simulator.
  • To generate realistic human pulse waveforms for various cardiovascular conditions and age groups.
  • To validate the simulator's accuracy against in vivo human pulse data.

Main Methods:

  • Collected in vivo radial pulse waveforms from a healthy subject using a robotic tonometry system (RTS).
  • Mathematically analyzed data to derive a representative human radial pulse waveform for cam profile design.
  • Constructed a prototype simulator with adjustable pressure and heart rate, and integrated a real-time display.
  • Validated the prototype's performance by comparing its generated waveforms with the representative human pulse waveform using RTS.

Main Results:

  • Augmentation Index analysis showed a sufficiently small percent error between simulator and human pulse profiles.
  • Phase analysis confirmed adequately small phase delay errors, indicating realistic waveform simulation.
  • The prototype simulator demonstrated capability in generating accurate radial pressure waveforms.

Conclusions:

  • A cam-based simulator can accurately reproduce radial pressure waveforms.
  • The design and testing methodology can be extended to generate pulse waveforms for different demographics and target conditions.
  • The simulator has potential applications in developing wearable sensors, standardizing pulse diagnosis, and medical training.