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Technical Briefs

Ultrafast Laser Micromachining of Latex for Balloon Angioplasty

[+] Author and Article Information
Diwakar Ramanathan

Department of Mechanical Engineering, Laboratory for Lasers, MEMS and Nanotechnology, Iowa State University, Ames, IA 50011

Pal Molian1

Department of Mechanical Engineering, Laboratory for Lasers, MEMS and Nanotechnology, Iowa State University, Ames, IA 50011molian@iastate.edu

1

Corresponding author.

J. Med. Devices 4(1), 014501 (Dec 28, 2009) (3 pages) doi:10.1115/1.4000680 History: Received March 26, 2008; Revised September 15, 2008; Published December 28, 2009; Online December 28, 2009

Latex balloons used in percutaneous transluminal coronary angioplasty are micromachined by mechanical, electrical, and optical methods. However, the cleanliness, straightness, and thermal damage obtained in these methods must be improved in order to minimize the adhesion of a balloon on the catheter tube. In this work, a femtosecond pulsed laser was used to micromachine 1.5 mm diameter latex tubes. The focused beam coupled with argon shield gas substantially improved the quality of cuts and holes acceptable by the Food and Drug Administration. Ultrafast laser by virtue of nonthermal ablation enabled the best quality in machined profiles.

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Figures

Grahic Jump Location
Figure 1

Schematic of experimental setup for the Ultrafast laser cutting of latex tubes

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Figure 2

Photograph of experimental setup for the Ultrafast laser cutting of latex tubes

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Figure 3

Laser cut profiles of latex: (ac) femtosecond pulses (0.4 W, focused beam, argon gas, unsupported); (df) nanosecond pulses (1.6 W, focused beam, argon, unsupported)

Grahic Jump Location
Figure 4

Femtosecond laser drilled holes in latex tubes

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