Perfusion catheters and related methods
First Claim
1. A method, comprising:
- passing a perfusion catheter, including a balloon, formed of a cross-linked inner tube and a non-cross-linked outer tube, and an elongate shaft that is attached to the balloon, into a blood vessel until the balloon is positioned adjacent a perforation or dissection in a wall of the blood vessel;
inflating the balloon to seal the perforation or dissection in the wall of the blood vessel, including urging fluid through a lumen of the elongate shaft and into the inner tube to inflate a series of helical windings of the balloon held together via adhesive properties of the outer tube;
the balloon, upon inflation, moving from a deflated configuration to an inflated configuration at which an outer surface of the balloon engages the wall of the blood vessel and an inner surface of the balloon'"'"'s series of helical windings defines a passage; and
after inflating the balloon, passing a treatment device at least partially through the passage, including receiving, in a distal-to-proximal direction, or delivering, in a proximal-to-distal direction, the treatment device.
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Accused Products
Abstract
This patent document discloses perfusion catheters and related methods for treating complications related to CTO interventions or dilating a vessel occlusion while maintaining a passage through the treated vessel segment. A perfusion catheter can include a balloon formed of an inflatable tube and an elongate shaft having a lumen for providing inflation fluid to, or withdrawing inflation fluid from, the balloon. The inflatable tube can be coiled in a helical manner around a central axis into a series of windings. Adjacent windings can be stacked against and bonded to each other, and an inner surface of the series of windings, when inflated, can define the passage. The elongate shaft can be eccentrically attached to a proximal portion of the balloon and the shaft'"'"'s lumen can be in fluid communication with the interior of the balloon, specifically the inflatable tube. The inflatable tube can include two different polymer tubes, one slightly smaller than the other.
77 Citations
19 Claims
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1. A method, comprising:
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passing a perfusion catheter, including a balloon, formed of a cross-linked inner tube and a non-cross-linked outer tube, and an elongate shaft that is attached to the balloon, into a blood vessel until the balloon is positioned adjacent a perforation or dissection in a wall of the blood vessel; inflating the balloon to seal the perforation or dissection in the wall of the blood vessel, including urging fluid through a lumen of the elongate shaft and into the inner tube to inflate a series of helical windings of the balloon held together via adhesive properties of the outer tube; the balloon, upon inflation, moving from a deflated configuration to an inflated configuration at which an outer surface of the balloon engages the wall of the blood vessel and an inner surface of the balloon'"'"'s series of helical windings defines a passage; and after inflating the balloon, passing a treatment device at least partially through the passage, including receiving, in a distal-to-proximal direction, or delivering, in a proximal-to-distal direction, the treatment device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method, comprising:
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passing a perfusion catheter, including a balloon formed of a cross-linked inner tube and a non-cross-linked outer tube having a collective thickness between 0.1 mm-0.5 mm, inclusive, and an elongate shaft attached to the balloon, into a blood vessel until the balloon is positioned near or within a treatment site; inflating the balloon by urging fluid through a lumen of the elongate shaft and into the inner tube, including inflating a series of helical windings of the inner and outer tubes; the balloon, upon inflation, moving from a deflated configuration to an inflated configuration at which an outer surface of the balloon engages a wall of the blood vessel or occlusive material accumulation within the wall and seals a perforation or dissection, and an inner surface of the series of helical windings defines a passage having a central axis offset from an axis of the elongate shaft; and after inflating the balloon, passing a treatment device at least partially through the passage. - View Dependent Claims (18, 19)
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Specification