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Mechatronic design of a fully integrated camera for mini-invasive surgery
C C Zazzarini1, P Patete, G Baroni
1Politecnico di Milano University, Milan 20133, Italy. cynthia.zazzarini@mail.polimi.it
IEEE Transactions on Bio-Medical Engineering
|January 15, 2013
Summary
This study presents an innovative, integrated camera for minimally invasive surgery. The compact device offers autofocus, optical zoom, and automatic light control for enhanced surgical visualization.
Area of Science:
- Medical Imaging
- Surgical Technology
- Miniature Optics
Background:
- Minimally invasive surgery requires advanced visualization tools.
- Existing endoscopic cameras face limitations in size and functionality for single-port access.
Purpose of the Study:
- To describe the design of a novel, fully integrated camera for single-port or transluminal abdominal surgery.
- To detail the components and functionalities of this compact surgical imaging apparatus.
Main Methods:
- The camera integrates a CMOS sensor, LED illumination, and a photodiode.
- A mechanical compensation optical system with four lens groups enables autofocus and 2.75x optical zoom.
- Miniature piezoelectric motors drive the lens actuation, controlled by a microcontroller.
Main Results:
- The apparatus has a tubular design (10 mm diameter, 35 mm length).
- The optical system provides a variable focal length (1.61–4.44 mm) and field of view (16°–40°).
- A closed-loop control system ensures automatic light adjustment.
Conclusions:
- The designed camera offers a compact, integrated solution for advanced surgical visualization.
- Potential design bottlenecks and realization issues were identified.
- The device shows promise for future clinical applications in minimally invasive procedures.
