A cutter with rotational-speed dependent diameter for interventional catheter systems

Author

Ruzzu, A. ; Fahrenberg, J. ; Müller, M. ; Rembe, C. ; Wallrabe, U.

Author_Institution

Inst. fur Mikrostrukturetech., Forschungszentrum Karlsruhe GmbH, Germany

fYear

1998

fDate

25-29 Jan 1998

Firstpage

499

Lastpage

503

Abstract

A new type of cutter for the use in catheters for minimal invasive therapy is presented. The cutter is designed for removing sclerotic plaque inside partially occluded vessels by means of rotational ablation. It has a length of 5 mm and a variable diameter from 2 mm to 5 mm. The variation of the cutting diameter is obtained by the use of centrifugal forces at 30.000 to 100.090 rpm. Cutting tests in chalk have been successfully performed. The removal of other materials is currently under investigation

Keywords

biomedical equipment; cutting; micromechanical devices; surgery; 2 to 5 mm; 5 mm; Ni-Ti wire; NiTi; PA-5 cutter; centrifugal forces; cutter; cutting diameter; diameter; interventional catheter; mechanical stability; minimal invasive therapy; nylon; optimisation; partially occluded vessels; photomicrography; rotational ablation; rotational-speed; sclerotic plaque; stainless steel; Angioplasty; Catheters; Medical treatment; Performance evaluation; Rough surfaces; Shafts; Steel; Surface roughness; Surgery; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Micro Electro Mechanical Systems, 1998. MEMS 98. Proceedings., The Eleventh Annual International Workshop on

Conference_Location

Heidelberg

ISSN

1084-6999

Print_ISBN

0-7803-4412-X

Type

conf

DOI

10.1109/MEMSYS.1998.659808

Filename

659808