Active catheter with integrated circuit for communication and control

Ki Tae Park, Masayoshi Esashi

Research output: Contribution to conferencePaper

21 Citations (Scopus)

Abstract

This paper describes an active catheter with flexible polyimide-based integrated CMOS interface circuits for communication and control (C&C IC) to be used for applications in biomedicine. The active catheter has a multi-link structure and distributed micro Shape Memory Alloy (SMA) coils are utilized as actuators for multi-degree of freedom movement. The C&C ICs are incorporated within the links and require three common lead wires to address all the links and control the selected SMA actuators in the active catheter. A MOS transistor with large channel width is used for switching the SMA actuator. To reduce system size and simplify assembly work, the C&C circuit and three lead wires are fabricated on the same substrate using a CMOS-compatible polyimide-based process. The outer diameter of the fabricated active catheter is approximately 2.0 mm. The fabricated C&C IC measures 1.0 mm×3.35 mm×0.2 mm. The link addressing and the actuator switching functions of the fabricated chip were confirmed. The minimum access time for addressing and actuating a single unit was 6.4 μs. The active catheter was actuated by the fabricated C&C IC chip with flexible interconnect leads in response to the C&C signals from the outside controller.

Original languageEnglish
Pages400-405
Number of pages6
DOIs
Publication statusPublished - 1999
EventProceedings of the 1999 12th IEEE International Conference on Micro Electro Mechanical Systems, MEMS - Orlando, FL, USA
Duration: 1999 Jan 171999 Jan 21

Other

OtherProceedings of the 1999 12th IEEE International Conference on Micro Electro Mechanical Systems, MEMS
CityOrlando, FL, USA
Period99/1/1799/1/21

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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