'The Microhand': a new concept of micro-forceps for ocular robotic surgery

作者：Hubschman J P^*; Bourges J L; Choi W; Mozayan A; Tsirbas A; Kim C J; Schwartz S D

来源：Eye, 2010, 24(2): 364-367.

DOI：10.1038/eye.2009.47

• robotic surgery
• microsurgery
• forceps
• micro electromechanical systems
• ocular surgery
• surgical device

Purpose To test the feasibility of retinal manipulations using a new micromanipulator (Microhand) for ocular robotic microsurgery.
Methods Pneumatically actuated four-finger microhands were developed at UCLA with micro electromechanical systems (MEMS) technology to mimic a human hand for small object manipulation. Microhands with four 4mm finger lengths were used for this study to lift caliper weights and fresh retinal tissue of porcine cadaver eyes to find the maximum force at a given pressure and feasibility of the microhands for retinal manipulation in real surgery.
Results A full closure of the microhand used for caliper weight lifting was achieved under 65 psi (448 kPa) of air pressure. The four-fingered microhand was able to develop about 20mN of total lifting force and 5mN per finger at 80 psi (551 kPa), and was strong enough to displace and lift the retina of pig eyes.
Conclusions The microhand is able to apply calibrated forces to ocular tissues and is suitable for ocular microsurgical procedures. This new tool would be useful in the development of robotic microsurgery. Eye (2010) 24, 364-367; doi: 10.1038/eye.2009.47; published online 20 March 2009

• 出版日期2010-2