Laser angioplasty device with magnetic direction control

Details Laser angioplasty device with magnetic direction control Laser angioplasty device with magnetic direction control

1993-03-25

1994-08-02

Pellegrino, Stephen C.

Surgery

Instruments

Light application

606 15, 606 16, 604 95, A61B 1736

Patent

active

053342070

ABSTRACT:
A laser angioplasty device having magnetic steerability and forward imaging capability. The device includes a probe, an electromagnetic control system coupled with the probe, a fluid injection system, an imaging system, a laser source and a balloon system. A laser fiber and a plurality of control wires, fluid injection tubes, balloon tubes, light-emitting optical fibers and imaging optical fibers extend throughout the length of the probe. A magnetized sleeve is journaled around a portion of the laser fiber which protrudes from the tip of the probe. The electromagnetic control system includes a joystick, a plurality of electromagnets and an electronic circuit for varying the magnetic fields of the electromagnets in response to the position of the joystick. The magnetic fields are induced into the control wires of the probe to influence the magnetized sleeve for steering and aiming the tip of the laser fiber.

REFERENCES:
patent: 3674014 (1972-07-01), Tillander
patent: 4483341 (1984-11-01), Witteles
patent: 4758222 (1988-07-01), McCoy
patent: 4784133 (1988-11-01), Mackin
patent: 4826087 (1989-05-01), Chinery
patent: 4848336 (1989-07-01), Fox et al.
patent: 4913142 (1990-04-01), Kittrell et al.
patent: 4934340 (1990-06-01), Ebling
Article "Design of an Endoscopic Carrier with Complete Directional Control," Lachiver and Seufert, Annals of Biomedical Engineering, vol. 7, No. 3-4, pp. 345-355, 1979.
Article, "Selective Angiography with a Catheter Guided by a Magnet," Tillander, IEEE Transactions on Magnetion, vol. MAG-6, No. 2, Jun. 1970.

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