Remotely steered catheterization device

Details Remotely steered catheterization device Remotely steered catheterization device

1993-07-28

1995-05-16

Rosenbaum, C. Fred

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604281, 128657, 128772, A61M 3700

Patent

active

054156335

ABSTRACT:
A remotely steerable guidewire, catheter or insertable active implement is disclosed. A steerable guidewire or a catheter for coronary and peripheral catheterizations is illustrated, using smart materials such as piezoelectrics for controlling its motions inside the body via control inputs applied from outside the body. A steerable portion of the device, which may be either an active flexible tip or an active region along the length of the implement, controls the shaft position or modifies its stiffness. In one embodiment, manipulation of electrical control inputs permits deflection of the steerable region through a range of motion about the axis of the implement in a single plane. In further embodiments, the tip may deflect in multiple planes about its longitudinal axis, or the catheter may be selectively stiffened to assume an arc shape or to firmly lodge the tip in position in a vessel.

REFERENCES:
patent: 4799474 (1989-01-01), Ueda
patent: 4838859 (1989-06-01), Strassman
patent: 4921482 (1990-05-01), Hammerslag et al.
patent: 4934340 (1990-06-01), Ebling et al.
patent: 4944727 (1990-07-01), McCoy
patent: 4984581 (1991-01-01), Stice
patent: 5238005 (1993-08-01), Imran
patent: 5281213 (1994-01-01), Milder et al.
Pilot Cardiovascular Systems Inc. flyer.

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