The irrigation jet: an aid in microvascular surgery

Area of Science:

• Microsurgery
• Vascular Surgery
• Biomedical Engineering

Background:

• Traditional jeweler's forceps cause significant trauma to blood vessel walls and intima during microsurgery.
• Need for improved atraumatic techniques in microvascular procedures.

Purpose of the Study:

• To introduce and evaluate an irrigation jet device for atraumatic blood vessel manipulation.
• To assess the efficacy of the device in achieving vessel patency in animal models and its clinical utility.

Main Methods:

• Design and implementation of a novel irrigation jet device for vessel handling.
• Anastomosis of rat arteries and veins (0.6 mm external diameter) using the device.
• Assessment of vessel patency rates at 3 weeks post-surgery.
• Successful anastomosis of smaller vessels (0.2-0.4 mm) and evaluation of long-term patency.

Main Results:

• Over 95% patency rate observed in 0.6 mm rat vessels after 3 weeks.
• Approximately 50% long-term patency achieved for 0.2-0.4 mm vessels.
• The device facilitated atraumatic positioning, controlled dilation, and enhanced visualization.

Conclusions:

• The irrigation jet device offers a significant advancement in atraumatic microvascular surgical techniques.
• The device demonstrates high patency rates and is clinically useful for human replantation and revascularization.
• This innovation minimizes vessel trauma, improving surgical success in delicate vascular procedures.