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Updated: Jun 6, 2026

Implantation of Combined Telemetric ECG and Blood Pressure Transmitters to Determine Spontaneous Baroreflex Sensitivity in Conscious Mice

Implantation of Combined Telemetric ECG and Blood Pressure Transmitters to Determine Spontaneous Baroreflex Sensitivity in Conscious Mice

Published on: February 14, 2021

Development of artificial bionic baroreflex system.

Kenji Sunagawa¹, Masaru Sugimachi

¹Kyushu Univ., Japan.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

|November 25, 2010

Summary

This summary is machine-generated.

Researchers developed a bionic baroreflex system to restore arterial pressure regulation. This artificial system successfully mimicked the native baroreflex function in animal models with baroreflex failure.

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Area of Science:

Physiology
Biomedical Engineering
Control Systems

Background:

The baroreflex system is the body's fastest arterial pressure regulator.
Quantitative dynamics of the baroreflex were unknown due to its closed-loop nature.
Previous studies were largely observational and qualitative.

Purpose of the Study:

To develop an artificial baroreflex system (bionic baroreflex).
To quantitatively characterize the native baroreflex system's dynamics.
To implement and test the bionic system in animal models.

Main Methods:

Anatomically isolated carotid sinuses to open the baroreflex loop.
Used white noise pressure perturbations to identify the open-loop transfer function.
Stimulated sympathetic efferent nerves to identify actuator transfer functions.
Implemented the bionic system in animal models of baroreflex failure.

Main Results:

The native baroreflex system functions as a low-pass filter and is remarkably linear.
Actuator responses were well-described by linear transfer functions.
The bionic baroreflex system restored normal arterial pressure regulation against orthostatic stress.

Conclusions:

The transfer functions of the native baroreflex and actuator enable controller design for a bionic system.
The developed bionic baroreflex system effectively replicates native baroreflex performance.
This technology holds promise for treating conditions with baroreflex dysfunction.