CT-Compatible Medical Drilling Stylet
Name
med-6-4-041001.pdf
Size
1.95 MB
Format
Adobe PDF
Checksum (MD5)
9309356bec303fefa6bbbb661cdb95bf
Author(s)
Meskers, Arjan J. H.
Gupta, Rajiv
Walsh, Conor James
Slocum Jr., Alexander H
Date Issued
October 2012
Journal
Journal of Medical Devices
Publisher
ASME International
Citation
Walsh, Conor J., Arjan J. H. Meskers, Alexander H. Slocum, and Rajiv Gupta. “CT-Compatible Medical Drilling Stylet.” Journal of Medical Devices 6, no. 4 (October 11, 2012): 041001. © 2012 American Society of Mechanical Engineer
Version
Final published version
Abstract
This paper describes the design of a compact, lightweight CT-compatible, drill-press that is designed to be used in either a hand-held or stand-alone mode to assist with percutaneous bone based interventions. Previous medical drilling tools that have been developed have a metal structure and typically have one actuator for advancing the drill (feed) and another for rotating it (speed). After defining the device functional requirements and specifications, a deterministic design process was followed to generate several design concepts that were then evaluated based on their ability to satisfy the functional requirements. A final concept that uses a custom screw-spline to achieve helical motion of a shaft that is attached to a standard orthopedic drill was selected for prototyping. The design uses a single actuator to drive both the screw and spline nuts through two different gear ratios, resulting in a fixed ratio between the feed and speed. Apart from the motor which is placed away from the central drill axis, the device is largely made from plastic materials. A custom experimental setup was developed that enabled drilling into bone inside a CT scanner to be examined. Results showed that the device was successfully able to penetrate thick cortical bone and that its structure did not appreciably distort the medical images. Keywords: medical robotics, computed tomography, X-ray, drill, interventional radiology, bone
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1115/1.4007280
