Valvuloplasty catheter with balloon which remains stable during

Details Valvuloplasty catheter with balloon which remains stable during Valvuloplasty catheter with balloon which remains stable during

1989-09-22

1991-01-22

Pellegrino, Stephen C.

Surgery

Instruments

Internal pressure applicator

604 96, A61M 2900

Patent

active

049868306

ABSTRACT:
A valvuloplasty catheter is described which includes an elongated flexible plastic tube dimensioned so as to allow it to be passed through the vascular system. Affixed to the distal end portion of the tube is an inflatable expander member which is intended to be positioned in the annulus of the valve to be treated. Inflation ports expose the interior of the expander member to the lumen of the tube so that when an inflation fluid is injected, under pressure, at the distal end of the tube, the expander member expands radially outward to spread the valve and free-up its leaflets. The novelty resides in providing first and second inflation ports of differing size so that the expander member inflates so as to create a dog-bone effect, tending to stabilize the expander member relative to the valve being treated.

REFERENCES:
patent: 4327736 (1982-05-01), Inoue

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