A novel retractable laparoscopic device for mapping gastrointestinal slow wave propagation patterns

Area of Science:

• Gastroenterology
• Medical Devices
• Surgical Technology

Background:

• Gastric slow waves are crucial for peristalsis; dysrhythmias are linked to functional motility disorders.
• Current methods for high-resolution gastric slow wave recording require invasive open surgery.
• A novel device for laparoscopic gastric slow wave mapping has been developed.

Purpose of the Study:

• To develop and validate a novel device for laparoscopic mapping of gastric slow waves.
• To enable accurate diagnosis of gastric dysrhythmias during minimally invasive procedures.

Main Methods:

• A retractable catheter device with 32 electrodes was designed for laparoscopic deployment.
• Recordings were validated against a reference array in porcine models.
• The device was tested in a human patient for corpus slow wave mapping.

Main Results:

• Porcine recordings showed identical frequency and consistent activation patterns and velocities compared to the reference array.
• Device and reference amplitudes were comparable, with a significantly higher signal-to-noise ratio for the device.
• Human patient testing successfully recorded and mapped corpus slow waves.

Conclusions:

• The novel laparoscopic device provides high-quality serosal slow wave recordings.
• This device facilitates laparoscopic diagnostic studies for gastric motility disorders.
• It offers a minimally invasive approach to documenting slow wave patterns in patients.