Spiral perfusion dilatation balloon for use in valvuloplasty procedure
First Claim
1. A balloon catheter comprising:
- a catheter shaft having an inflation lumen;
a perfusion dilatation balloon mounted on a distal portion of the catheter shaft and being formed from an inflatable tube having a balloon inflation lumen extending therethrough and being in fluid communication with the catheter shaft, wherein in the inflated configuration the tube is coiled into a series of contacting windings that together form an hourglass profile wherein inner surfaces of the coiled windings of the inflatable tube define a lumen of the perfusion dilatation balloon to allow blood flow therethrough,wherein in a deflated configuration, the windings of the inflatable tube are radially collapsed to a reduced profile smaller than the hourglass profile and wherein the lumen of the perfusion dilatation balloon is closed to prevent blood flow therethrough; and
one or more guide struts that connect a proximal loop of the perfusion dilatation balloon and the catheter shaft and are operable in the deflated configuration to guide the perfusion balloon into a guide catheter.
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Accused Products
Abstract
A balloon dilatation catheter for use in a valvuloplasty procedure includes a catheter shaft and a spiral perfusion balloon mounted thereon. The perfusion balloon is formed from an inflatable tube that is in fluid communication with a catheter shaft inflation lumen. The inflatable tube is coiled into a series of windings that in an inflated configuration form a cylindrical or hourglass profile. In the inflated configuration, inner surfaces of the coiled windings of the inflatable tube define a perfusion lumen to allow blood flow through the perfusion balloon. Adjacent windings may be secured together with a flexible adhesive and/or a support weave formed from one or more filaments of material that criss-crosses between the adjacent windings along substantially the entire length of the spiral perfusion balloon.
21 Citations
11 Claims
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1. A balloon catheter comprising:
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a catheter shaft having an inflation lumen; a perfusion dilatation balloon mounted on a distal portion of the catheter shaft and being formed from an inflatable tube having a balloon inflation lumen extending therethrough and being in fluid communication with the catheter shaft, wherein in the inflated configuration the tube is coiled into a series of contacting windings that together form an hourglass profile wherein inner surfaces of the coiled windings of the inflatable tube define a lumen of the perfusion dilatation balloon to allow blood flow therethrough, wherein in a deflated configuration, the windings of the inflatable tube are radially collapsed to a reduced profile smaller than the hourglass profile and wherein the lumen of the perfusion dilatation balloon is closed to prevent blood flow therethrough; and one or more guide struts that connect a proximal loop of the perfusion dilatation balloon and the catheter shaft and are operable in the deflated configuration to guide the perfusion balloon into a guide catheter. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A perfusion dilatation balloon comprising:
an inflatable tube having an inflation lumen extending therethrough, wherein the inflatable tube is wrapped into a series of windings the inner surfaces of which define a perfusion lumen to allow blood flow through the perfusion balloon when in an expanded configuration, and wherein adjacent windings of the inflatable tube are secured to each other with a support weave formed from one or more filaments of surgical suture that are woven over and under and criss-crossing between all adjacent windings along substantially the entire length of the inflatable tube. - View Dependent Claims (8, 9, 10, 11)
Specification