eprintid: 10063559
rev_number: 20
eprint_status: archive
userid: 608
dir: disk0/10/06/35/59
datestamp: 2018-12-10 14:31:55
lastmod: 2021-12-10 23:46:09
status_changed: 2018-12-10 14:31:55
type: article
metadata_visibility: show
creators_name: Poduval, R
creators_name: Coote, J
creators_name: Mosse, C
creators_name: Finlay, M
creators_name: Papakonstantinou, I
creators_name: Desjardins, A
title: 3D printed micro-scale fiber optic probe for intravascular pressure sensing
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F43
divisions: F46
divisions: F42
note: This version is the version of the record. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: Small form-factor invasive pressure sensors are widely used in minimally invasive surgery, for example to guide decision making in coronary stenting procedures. Current fiber-optic sensors can have high manufacturing complexities and costs, which severely constrains their adoption outside of niche fields. A particular challenge is the ability to rapidly prototype and iterate upon sensor designs to optimize performance for different applications and medical devices. Here, we present a new sensor fabrication method, which involves two-photon polymerization printing and integration of the printed structure onto the end-face of a single-mode optical fiber. The active elements of the sensor were a pressure-sensitive diaphragm and an intermediate temperature-sensitive spacer that was insensitive to changes in external pressure. Deflection of the diaphragm and thermal expansion the spacer relative to the fiber end-face were monitored using phase-resolved low coherence interferometry. A pressure sensitivity of 0.031 rad/mmHg across the range of 760 to 1060 mmHg (absolute pressure), and a temperature sensitivity of 1.2 mrad/°C across the range 20 to 45°C were observed. This method will enable the fabrication of a wide range of fiber-optic sensors with pressure and temperature sensitivities suitable for guiding minimally invasive surgery.
date: 2018-09-05
date_type: published
official_url: https://doi.org/10.1117/12.2321980
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1606796
doi: 10.1117/12.2321980
lyricists_name: Coote, Joanna
lyricists_name: Desjardins, Adrien
lyricists_name: Papakonstantinou, Ioannis
lyricists_name: Poduval, Radhika
lyricists_id: JCOOT01
lyricists_id: AEDES16
lyricists_id: IPAPA54
lyricists_id: RPODU23
actors_name: Poduval, Radhika
actors_id: RPODU23
actors_role: owner
full_text_status: public
publication: Proceedings of Biosensing and Nanomedicine XI
volume: 10728
article_number: 107280B (2018)
issn: 0277-786X
citation:        Poduval, R;    Coote, J;    Mosse, C;    Finlay, M;    Papakonstantinou, I;    Desjardins, A;      (2018)    3D printed micro-scale fiber optic probe for intravascular pressure sensing.                   Proceedings of Biosensing and Nanomedicine XI , 10728     , Article 107280B (2018).  10.1117/12.2321980 <https://doi.org/10.1117/12.2321980>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10063559/1/107280B%281%29.pdf