Towards a procedure-optimised steerable catheter for deep-seated neurosurgery
File(s)biomedicines-11-02008.pdf (6.84 MB)
Published version
Author(s)
Aktas, Ayhan
Demircali, ali anil
Secoli, Riccardo
Temelkuran, Burak
Rodriguez y Baena, ferdinando
Type
Journal Article
Abstract
In recent years, steerable needles have attracted significant interest in relation to minimally invasive surgery (MIS). Specifically, the flexible, programmable bevel-tip needle (PBN) concept was successfully demonstrated in vivo in an evaluation of the feasibility of convection-enhanced delivery (CED) for chemotherapeutics within the ovine model with a 2.5 mm PBN prototype. However, further size reductions are necessary for other diagnostic and therapeutic procedures and drug delivery operations involving deep-seated tissue structures. Since PBNs have a complex cross-section geometry, standard production methods, such as extrusion, fail, as the outer diameter is reduced further. This paper presents our first attempt to demonstrate a new manufacturing method for PBNs that employs thermal drawing technology. Experimental characterisation tests were performed for the 2.5 mm PBN and the new 1.3 mm thermally drawn (TD) PBN prototype described here. The results show that thermal drawing presents a significant advantage in miniaturising complex needle structures. However, the steering behaviour was affected due to the choice of material in this first attempt, a limitation which will be addressed in future work.
Date Issued
2023-07-17
Date Acceptance
2023-07-08
Citation
Biomedicines, 2023, 11 (7), pp.1-17
ISSN
2227-9059
Publisher
MDPI AG
Start Page
1
End Page
17
Journal / Book Title
Biomedicines
Volume
11
Issue
7
Copyright Statement
© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
License URL
Identifier
https://www.mdpi.com/2227-9059/11/7/2008
Publication Status
Published
Article Number
2008
Date Publish Online
2023-07-17