Miniature ultrasonic probe construction for minimal access surgery

Area of Science:

• Medical imaging
• Surgical technology
• Biomedical engineering

Background:

• Minimal access surgery necessitates specialized imaging tools for intraoperative guidance.
• Ultrasound offers an interventional imaging modality due to its probe's accessibility.
• Miniaturized, high-frequency ultrasound probes are crucial for navigating confined surgical sites.

Purpose of the Study:

• To establish design parameters for miniaturized, high-frequency ultrasound probes for interventional surgery.
• To address the technical challenges associated with fabricating sub-miniature ultrasound probes.
• To demonstrate a practical solution through the development of a 1 mm diameter intravascular probe.

Main Methods:

• Development of design curves correlating element count and frequency with probe dimensions for linear and cylindrical arrays.
• Investigation of interconnect and packaging solutions for high-frequency, sub-miniature probe construction.
• Fabrication and testing of a 1 mm diameter intravascular ultrasound probe.

Main Results:

• Design curves provide a framework for creating ultrasound probes with specific dimensions and frequencies.
• Identified and addressed critical technical challenges in high-frequency probe fabrication.
• Successfully produced a functional 1 mm diameter intravascular ultrasound probe.

Conclusions:

• Miniaturized, high-frequency ultrasound probes are feasible for interventional applications.
• Addressing interconnect and packaging challenges is key to successful sub-miniature probe development.
• The developed intravascular probe exemplifies a viable solution for minimally invasive surgical imaging.