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  4. Bistable Puncturing Tool for Retinal Vein Cannulation
 
conference paper

Bistable Puncturing Tool for Retinal Vein Cannulation

Bonnefoy, Lisa Anaïs Jeanne  
•
Baur, Charles  
•
Bellouard, Yves  
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June 12, 2020
Proceedings of the 20th International Conference of the European Society for Precision Engineering and Nanotechnology
Euspen’s 20th International Conference & Exhibition

An innovative surgical tool prototype dedicated to safe puncturing has been developed for the treatment of retinal vein occlusions (RVOs). The tool is manufactured monolithically by femtolaser printing in fused silica. It consists of a programmable bistable mechanism equipped with a puncturing needle and a fluidic channel to transport and inject drugs into retinal veins. The outer diameter of the segment of the tool entering the eye is below 1mm. The innovative approach used for the manufacturing of the long flexible fluidic channel is based on a series of chimneys reducing the etching time, which are then sealed by CO2 laser melting. First tests made by a medical surgeon with tool prototypes show that the puncturing function is successful: the rapid and repeatable puncturing motion of the tool tip provided by the bistable mechanism allows safe vein puncturing, while the programming allows the tuning of the puncturing stroke.

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Type
conference paper
Author(s)
Bonnefoy, Lisa Anaïs Jeanne  
Baur, Charles  
Bellouard, Yves  
Henein, Simon  
Date Issued

2020-06-12

Published in
Proceedings of the 20th International Conference of the European Society for Precision Engineering and Nanotechnology
Total of pages

4

Subjects

Bistable Mechanism

•

Compliant Mechanism

•

Needles

•

Surgery

•

Femtolaser printing

•

Glass

•

Retina

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
INSTANT-LAB  
Event nameEvent placeEvent date
Euspen’s 20th International Conference & Exhibition

Geneva, Switzerland

June 8-12, 2020

Available on Infoscience
November 14, 2023
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/202137
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