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Postural mechatronic assistant for laparoscopic solo surgery (PMASS).

Arturo Minor Martinez¹, Jesús Villalobos Gomez, Ricardo Ordorica Flores

¹Departamento de Eléctrica Sección Bioelectrónica, CINVESTAV IPN, Mexico, DF, Mexico.

Surgical Endoscopy

|June 6, 2008

Summary

This study introduces an autonomous laparoscope navigation system, reducing surgical downtime and improving visual control. Surgeons can now perform procedures with enhanced real-time perspective adjustment and free hands.

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Area of Science:

Surgical Technology
Robotics in Medicine
Medical Mechatronics

Background:

Current laparoscope manipulation methods (manual, passive, robotic) incur downtime for cleaning and perspective adjustment.
This downtime limits efficiency and potentially impacts surgical outcomes.
Existing systems lack autonomous control for optical perspective management.

Purpose of the Study:

To develop and evaluate a novel autonomous navigation system for laparoscopes.
To reduce latency and enable real-time adjustment of the visual perspective during laparoscopic surgery.
To enhance surgeon control and efficiency in minimally invasive procedures.

Main Methods:

An intuitive mechatronic system with three degrees of freedom and a single active articulation was designed.

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The system utilizes the insertion point as an invariant navigation point within an inverted cone workspace.

The system was tested in simulated surgical environments and live animal and pediatric surgeries.

Main Results:

Surgeons successfully auto-navigated the laparoscope in all tested procedures.
The system demonstrated no visual tremor, providing stable optical perspective.
Surgeons achieved real-time visual approaches with both hands free to perform surgical tasks.

Conclusions:

The novel mechatronic system enables surgeons to perform solo surgery by autonomously handling the laparoscope.
Reduced downtime for cleaning and positioning is achieved as surgeons directly control optics.
Real-time visual perspective selection by the surgeon enhances procedural control and efficiency.