A lariat-based dilatation device for hysteroscopy: an in vitro study

Area of Science:

• Minimally Invasive Surgery
• Gynecological Endoscopy
• Medical Device Design

Background:

• Hysteroscopy is a standard diagnostic and therapeutic procedure for uterine conditions.
• Current uterine dilation methods (CO2, saline, pharmaceuticals) can cause adverse syndromes.
• A need exists for safer and more effective uterine dilation techniques.

Purpose of the Study:

• To design and evaluate a novel mechanical dilator and operating system for hysteroscopy.
• To overcome the limitations of existing uterine dilation methods.
• To improve surgical space and visualization during hysteroscopic procedures.

Main Methods:

• A mechanical dilator with adjustable diameter (9mm to 60mm) was developed.
• An operating system with a motion-controlled endoscope and instrument driving tube was designed.
• Analysis of tension, diameter, and visual/operating space parameters was conducted.
• Surgical experiments were performed to validate the system's performance.

Main Results:

• The dilator effectively supported simulated organ walls, creating adequate space.
• The operating system enabled navigation and polyp excision within the dilator's channel (6mm diameter).
• The system demonstrated efficient expansion and provided sufficient operating space for hysteroscopy.

Conclusions:

• The novel mechanical dilator and operating system show efficient application in hysteroscopy.
• This system offers a promising alternative for organ expansion and surgical operations.
• The device facilitates improved surgical access and maneuverability in hysteroscopic procedures.