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You searched for id:"oai:tudelft.nl:uuid:d886576a-c74c-410d-8297-bbe7696271f1". One record found.

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Delft University of Technology

1. Hiemstra, Olivier (author). Design of an external patient specific guide for drilling a tunnel through the scaphoid.

Degree: 2020, Delft University of Technology

In recent years, patient specific instrumentation (PSI) has shown to be a promising application of 3D printing in orthopedic surgery. By aiding the surgeon with accurate placement of instruments such as saws or drills, surgeries can be performed faster, and require less surgeon experience. While most of these devices interface directly with the bone, invasiveness can be greatly decreased by applying the device to the outside of the body. Such an external device also allows for guidance with respect to bones that are too small to place a device on directly, for example the carpal bones in the wrist. In this thesis, an external PSI is designed to aid surgeons in accurately drilling a tunnel through the scaphoid; one of the carpal bones. The main challenge addressed in this thesis is how to rigidly attach a guide to the largely soft and elastic exterior of the hand. This was overcome by ensuring that the guide only contacts the hand at locations where the bone lies directly under the skin. Exact constraint design was applied to determine a minimal set of such contact locations that fully constrain the relevant anatomy. A 3D printed prototype was made for 6 participants and measurements were done to determine the positioning accuracy as well as the stiffness of the connection between the guide and the body. The results show that external PSI is a promising technology for application to wrist surgery, but may not be applicable to other parts of the body due to a limited number of suitable contact locations.

Mechanical Engineering

Advisors/Committee Members: Breedveld, P. (mentor), Kraan, Gerald (graduation committee), de Kater, E.P. (graduation committee), Harlaar, J. (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: Exact constraint design; modified Brunelli procedure; patient specific instrumentation; surgical guide; wrist surgery

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Hiemstra, O. (. (2020). Design of an external patient specific guide for drilling a tunnel through the scaphoid. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:d886576a-c74c-410d-8297-bbe7696271f1

Chicago Manual of Style (16th Edition):

Hiemstra, Olivier (author). “Design of an external patient specific guide for drilling a tunnel through the scaphoid.” 2020. Masters Thesis, Delft University of Technology. Accessed January 16, 2021. http://resolver.tudelft.nl/uuid:d886576a-c74c-410d-8297-bbe7696271f1.

MLA Handbook (7th Edition):

Hiemstra, Olivier (author). “Design of an external patient specific guide for drilling a tunnel through the scaphoid.” 2020. Web. 16 Jan 2021.

Vancouver:

Hiemstra O(. Design of an external patient specific guide for drilling a tunnel through the scaphoid. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Jan 16]. Available from: http://resolver.tudelft.nl/uuid:d886576a-c74c-410d-8297-bbe7696271f1.

Council of Science Editors:

Hiemstra O(. Design of an external patient specific guide for drilling a tunnel through the scaphoid. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:d886576a-c74c-410d-8297-bbe7696271f1

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