Helical balloon perfusion angioplasty catheter
First Claim
1. A helical balloon catheter comprising an inflatable tube having a proximal, generally straight portion and a distal, helically coiled portion, the helically coiled portion being inflatable from a deflated, furled configuration having a relatively smaller inner and outer diameter to an inflated, unfurled configuration having a relatively larger inner and outer diameter and defining a generally open, central lumen, the balloon further including means for securing turns of the coiled portion with respect to one another.
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Accused Products
Abstract
A perfusion balloon catheter which permits blood flow through the balloon even when the balloon is inflated. The balloon catheter comprises a thin-walled, collapsible and inflatable tube that has a proximal, generally straight portion, and a distal, helically coiled portion that is generally cylindrically shaped and defines an open lumen therethrough. The successive turns of the coil are secured to one another to maintain the balloon'"'"'s configuration when inflated. The furled balloon catheter can be inserted to the desired location and then inflated. Because the helically coiled portion defines a relatively large open lumen, blood flow through the balloon can continue even as the inflated balloon remains in place, facilitating extended inflation periods.
265 Citations
31 Claims
- 1. A helical balloon catheter comprising an inflatable tube having a proximal, generally straight portion and a distal, helically coiled portion, the helically coiled portion being inflatable from a deflated, furled configuration having a relatively smaller inner and outer diameter to an inflated, unfurled configuration having a relatively larger inner and outer diameter and defining a generally open, central lumen, the balloon further including means for securing turns of the coiled portion with respect to one another.
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9. A helical balloon catheter comprising:
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an inflatable tube having a proximal, generally straight portion and a distal, coiled portion defining a generally open, central lumen; means for securing turns of the coiled portion with respect to one another; advancing means for selectively advancing and retracting the coiled portion of the balloon in a bodily passageway, the advancing means comprising a generally central shaft and attachment means for attaching the coiled portion of the balloon to the shaft; and a pushing catheter advancable over the shaft, the pushing catheter having a distal end for pushing against the balloon when it is furled about the shaft.
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- 10. A helical balloon catheter comprising an inflatable tube having a proximal, generally straight portion and a distal, coiled portion defining a generally open, central lumen, means for securing turns of the coiled portion with respect to one another and advancing means for selectively advancing and retracting the coiled portion of the balloon in a bodily passageway, the advancing means comprising a generally central shaft and attachment means for attaching the coiled portion of the balloon to the shaft, the attachment means comprising straps having distal, proximal, and intermediate portions.
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21. A balloon catheter comprising:
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an inflatable tube having a proximal, generally straight portion and a distal, coiled, generally cylindrical portion defining an open, central lumen, at least some of the successive turns of the coiled portion abutting one another; means for securing turns of the coiled portion with respect to one another including a flexible skin attached to at least some of the turns of the coil; and attachment means for attaching the coiled portion of the balloon to a guide wire, comprising straps having distal, proximal, and intermediate portions, the distal portions of the straps being attached to the guide wire and the intermediate portions of the straps being attached to the coiled portion.
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- 22. A balloon catheter comprising a distal, helically coiled, generally cylindrical inflatable sheath portion defining a proximally and distally open lumen, the helically coiled portion being inflatable from a deflated, furled configuration having a relatively smaller inner and outer diameter to an inflated, unfurled configuration having a relatively larger inner and outer diameter, the balloon catheter further including an inflation tube extending proximally from the inflatable sheath portion, and means for advancing and retracting the inflatable sheath portion through a passageway.
- 27. A balloon catheter comprising a distal, generally cylindrical inflatable sheath portion defining a proximally and distally open lumen, an inflation tube extending proximally from the inflatable sheath portion, and means for advancing and retracting the inflatable sheath portion through a passageway, such means comprising a plurality of straps having proximal, intermediate, and distal portions, the intermediate portions of the straps being attached to the inflatable sheath, and the distal portions of the straps being attached to the shaft.
Specification