This paper describes the development of an articulating endoscopic screw driver that can be used to place screws in osteosynthetic plates during thoracoscopic surgery. The device is small enough to be used with a 12 mm trocar sleeve and transmits sufficient torque to fully secure bone screws. The articulating joint enables correct screw alignment at obtuse angles of up to 60 deg from the tool axis. A novel articulating joint is presented, wherein a flexible shaft both transmits torque and actuates the joint; antagonist force is provided by a superelastic spring. Screws are secured against the driver blade during insertion and with a retention mechanism that can passively release the screw when it has been securely placed in the bone. The prototype has been fitted with a blade compatible with 2.0 mm and 2.3 mm self-drilling screws although a different driver blade or drill bit can easily be attached. Efficacy of the tool is demonstrated by securing an osteosynthetic plate to a rib in a mock surgical setup. This tool enables minimally invasive, thoracoscopic rib fixation.
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An Articulating Tool for Endoscopic Screw Delivery
Joseph Petrzelka,
Joseph Petrzelka
Massachusetts Institute of Technology
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Dimitris Chatzigeorgiou,
Dimitris Chatzigeorgiou
Massachusetts Institute of Technology
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Manas C. Menon,
Manas C. Menon
Massachusetts Institute of Technology
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Michelle E. Lustrino,
Michelle E. Lustrino
Massachusetts Institute of Technology
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Clara J. Stefanov-Wagner,
Clara J. Stefanov-Wagner
Massachusetts Institute of Technology
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Alexander H. Slocum,
Alexander H. Slocum
Massachusetts Institute of Technology
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Suresh K. Agarwal
Suresh K. Agarwal
Boston University
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Joseph Petrzelka
Massachusetts Institute of Technology
Dimitris Chatzigeorgiou
Massachusetts Institute of Technology
Manas C. Menon
Massachusetts Institute of Technology
Michelle E. Lustrino
Massachusetts Institute of Technology
Clara J. Stefanov-Wagner
Massachusetts Institute of Technology
Alexander H. Slocum
Massachusetts Institute of Technology
Suresh K. Agarwal
Boston University
J. Med. Devices. Jun 2010, 4(2): 027526 (1 pages)
Published Online: August 10, 2010
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Published:
August 10, 2010
Citation
Petrzelka, J., Chatzigeorgiou, D., Menon, M. C., Lustrino, M. E., Stefanov-Wagner, C. J., Slocum, A. H., and Agarwal, S. K. (August 10, 2010). "An Articulating Tool for Endoscopic Screw Delivery." ASME. J. Med. Devices. June 2010; 4(2): 027526. https://doi.org/10.1115/1.3443317
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