[THE CONTENTS OF FORMATION OF THE ELECTRIC WELDING ANASTOMOSIS OF STOMACH AND SMALL INTESTINE]

Area of Science:

• Gastroenterology
• Biomedical Engineering
• Surgical Technology

Background:

• Gastrointestinal anastomosis is a critical surgical procedure.
• Current methods for gastrointestinal tissue joining have limitations.
• Understanding the tissue response to electrical stimulation is essential for developing new techniques.

Purpose of the Study:

• To investigate the structural changes in gastrointestinal tissues during electric welding.
• To characterize the sequence of tissue alterations under impulse and constant electric pressure (440 kHz).
• To define the key elements and outcomes of electric gastrointestinal anastomosis.

Main Methods:

• Utilized the ЕКВЗ-300 «Patonmed» apparatus for electric pressure delivery.
• Applied forces ranging from 2 to 6 N/mm² to the gastrointestinal tissue.
• Monitored electric parameters using LCard E20-10 and Tektronix TDS 3014C oscilloscope.

Main Results:

• Identified three stages in electric conjunction: mucosa destruction, tissue fusion, and formation of a homogenous electric welding suture.
• Observed simultaneous occurrence of mucosa destruction and tissue fusion, independent of each other.
• Determined that non-destructive tissue changes extend up to 1 mm beyond electrode apposition.

Conclusions:

• Electric welding of the stomach and small intestine results in a distinct three-element process.
• The formation of a homogenous electric suture is a key outcome of this procedure.
• The localized nature of non-destructive changes suggests potential for precise tissue joining.