Catheter having a controllable stiffness and adapted for use wit

Details Catheter having a controllable stiffness and adapted for use wit Catheter having a controllable stiffness and adapted for use wit

1997-09-23

1999-04-27

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604264, A61M 2500

Patent

active

058975365

ABSTRACT:
An intravascular catheter having controllable stiffness or flexibility, and adapted for use with various contrast media. The stiffness of the catheter may be increased during the use of the catheter by applying a fluid under pressure at the proximal end of the catheter to thereby fill a cavity within the body of the catheter to thereby cause the region of the catheter defined by the cavity to become less flexible. When the fluid pressure is decreased, this region of the catheter becomes more flexible. The fluids to be applied inside the cavities may be a variety of types of contrast media, used with imaging techniques such as either MRI or X-ray fluoroscopy.

REFERENCES:
patent: 2548602 (1951-04-01), Greenburg
patent: 4096862 (1978-06-01), DeLuca
patent: 5034005 (1991-07-01), Appling
patent: 5464023 (1995-11-01), Viera

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