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Handheld-Level Electromechanical Cartilage Reshaping Device.

Sehwan Kim¹, Cyrus T Manuel², Brian J F Wong²

¹Department of Biomedical Engineering, College of Medicine, Dankook University, Cheonan-si, Chungnam, Republic of Korea.

Facial Plastic Surgery : FPS

|July 1, 2015

Summary

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A new handheld electromechanical reshaping (EMR) device effectively reshapes cartilage with minimal heat generation. This cartilage reshaping technology shows feasibility for clinical outpatient settings, preserving cell viability.

Area of Science:

Biomedical Engineering
Materials Science
Tissue Engineering

Background:

Cartilage reshaping is crucial for various clinical applications.
Existing methods may lack precision or cause thermal damage.
A need exists for minimally invasive, controllable cartilage modification techniques.

Purpose of the Study:

To develop and assess a handheld multichannel electromechanical reshaping (EMR) device for cartilage.
To evaluate the feasibility of EMR for cartilage reshaping in an outpatient clinical setting.
To determine optimal parameters (voltage, time) for cartilage reshaping using EMR.

Main Methods:

Developed a handheld multichannel electromechanical reshaping (EMR) device.
Tested EMR on pig costal cartilage specimens (23 × 6.0 × 0.7 mm).

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Applied voltages (5-8 V) for up to 8 minutes, measuring shape change, temperature, and cell viability.

Main Results:

Increased voltage and application time correlated with greater cartilage bend angle.
Achieved a maximum bend angle of 70.5° ± 7.3° at 8 V for 5 minutes.
EMR demonstrated a nonthermal effect, with maximum cartilage temperature reaching only 20.3°C at 8 V; cell viability remained unaffected.

Conclusions:

The developed multichannel EMR device is feasible for cartilage reshaping.
EMR offers precise shape modification with minimal thermal impact on cartilage tissue.
This technology shows promise for clinical applications in cartilage repair and modification.