An Articulating Tool for Endoscopic Screw Delivery
Name
MED-10-1046 Final.pdf
Size
760 KB
Format
Adobe PDF
Checksum (MD5)
082838cff440bfcaffc96f8a7cbfe741
Author(s)
Petrzelka, Joseph Edward
Menon, Manas C.
Stefanov-Wagner, Clara J.
Agarwal, Suresh K.
Chatzigeorgiou, Dimitrios
Lustrino, Michelle E.
Slocum, Alexander H.
Date Issued
February 2011
Journal
Journal of Medical Devices
Publisher
American Society of Mechanical Engineers
Citation
Petrzelka, Joseph E. et al. “An Articulating Tool for Endoscopic Screw Delivery.” Journal of Medical Devices 5.1 (2011): 011004.
Version
Author's final manuscript
Abstract
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, 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 with a retention mechanism that passively releases the screw once it is securely seated in the bone. The prototype has been fitted with a blade compatible with 2.0 and 2.3 mm self-drilling screws, though a different driver blade or drill bit can be easily attached. Efficacy of the tool has been demonstrated by thoracoscopically securing an osteosynthetic plate to a rib during an animal trial. This tool enables minimally invasive, thoracoscopic rib fixation.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike 3.0
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1115/1.4003435
