Intra-Articular Ultrasonography Probe for Minimally Invasive Upper Extremity Arthroscopic Surgery: A Phantom Study.

Area of Science:

• Medical Devices
• Surgical Technology
• Ultrasound Imaging

Background:

• Upper extremity arthroscopic surgery demands precise assessment of cartilage and navigation around delicate neurovascular structures.
• The confined joint space presents challenges, increasing the need for assistive devices to mitigate iatrogenic damage risks.

Purpose of the Study:

• To develop and evaluate a novel intra-articular ultrasound (AUS) probe for enhanced visualization during upper extremity joint surgery.
• To assess the safety and efficacy of the AUS probe in a simulated surgical environment.

Main Methods:

• Development of a miniaturized intra-articular ultrasound probe specifically for upper extremity joints.
• Evaluation of the probe's acoustic output safety through underwater sound field measurements.
• Testing the probe's visualization capabilities using an agar phantom embedded with simulated nerves and blood vessels.

Main Results:

• Acoustic measurements confirmed the biological safety of the AUS probe's output, meeting necessary performance levels for an ultrasound measurement probe.
• The AUS probe successfully reconstructed distinct images of embedded blood vessels and nerves using A-mode imaging in the phantom model.
• Proof-of-concept for the AUS probe's utility in upper extremity surgical applications was established.

Conclusions:

• The developed intra-articular ultrasound probe demonstrates feasibility for enhancing visualization and safety in upper extremity arthroscopic surgery.
• Further research and clinical studies are required to secure regulatory approval for its use as a medical device.