Title
Friction Modulation for Endoscopes: A Proof of Concept
Author
Tuijp, Jeroen (TU Delft Mechanical, Maritime and Materials Engineering)
Contributor
Atalla, M.A.A. (mentor) 
Wiertlewski, M. (graduation committee)
Sakes, A. (graduation committee)
Degree granting institution
Delft University of Technology
Programme
Mechanical Engineering | BioMechanical Design
Date
2023-01-12
Abstract
Endoscopic instruments are integral components of minimally invasive procedures, widely used for diagnoses and treatment of diseases. When navigating the endoscope, it should experience a minimum of friction, while an increase in friction is beneficial for performing the medical procedure. Friction can be reduced by squeeze film levitation, where air is trapped and pressurized between two surfaces by vibrating one of these surfaces. The squeeze film levitates the two surfaces away from each other, hereby reducing friction. Squeeze film levitation between a rigid curved surface and a soft surface is still poorly understood. Also, a proof of concept of a friction modulation mechanism for endoscopes is not yet available in the research literature. Therefore, this paper describes the design and experimental validation of an ultrasonic vibrating ring that can actively modulate friction by generating a squeeze film. On a steel surface, the friction is reduced considerably. However, on the two soft surfaces described in this paper, the reduction of friction is absent.
Subject
Ultrasonic vibration
Friction
squeeze film
Endoscopes
Piezoelectric
To reference this document use:
http://resolver.tudelft.nl/uuid:d07aa319-6a86-44c5-891c-8fe9a1d819bb
Embargo date
2024-01-31
Coordinates
52.000999996,4.370165186
Part of collection
Student theses
Document type
master thesis
Rights
© 2023 Jeroen Tuijp