Thrombolytic filtration and drug delivery catheter with a self-expanding portion
First Claim
Patent Images
1. A catheter comprising:
- a shaft with a proximal and distal portion, the distal portion comprising longitudinal ribs which in a first position flare beyond the diameter of the shaft;
means for compressing the longitudinal ribs such that when the means for compressing is released from the longitudinal ribs, the longitudinal ribs flare to the first position; and
delivery conduits extending longitudinally through the shaft and ribs and at least one port in each rib for a delivered drug or agent to exit each rib.
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Accused Products
Abstract
A thrombolytic filtration and drug delivery catheter is disclosed comprising a shaft which longitudinal ribs. The ribs are compressed while being advanced to the site of interest and are released at the site, flaring to a diameter greater than the diameter of the shaft. The ribs can be compressed by a sleeve or thread, for example. Drugs or other agents can be delivered through lumens in the shaft and ribs, out through ports in the ribs. Preferably, the ports are positioned to deliver the drugs or other agents between the ribs and within the region defined by the ribs.
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Citations
35 Claims
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1. A catheter comprising:
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a shaft with a proximal and distal portion, the distal portion comprising longitudinal ribs which in a first position flare beyond the diameter of the shaft;
means for compressing the longitudinal ribs such that when the means for compressing is released from the longitudinal ribs, the longitudinal ribs flare to the first position; and
delivery conduits extending longitudinally through the shaft and ribs and at least one port in each rib for a delivered drug or agent to exit each rib. - View Dependent Claims (2, 3, 4)
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5. A catheter comprising:
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a shaft with a proximal and distal portion, the distal portion comprising a plurality of longitudinal ribs which in a first position flare beyond the diameter of the shaft, the shaft further comprising delivery lumens extending longitudinally through the shaft and ribs and at least one port in each rib for a delivered drug or agent to exit each rib; and
a sleeve receiving at least the distal portion of the shaft, wherein the sleeve and shaft can move with respect to each other such that when the sleeve is retracted from the distal portion, the longitudinal ribs are in their first position and when the distal portion is within the sleeve, the member compresses the ribs into a second position. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. A catheter comprising:
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a shaft with a proximal and distal portion, the distal portion comprising a plurality of longitudinal ribs which in a first position flare beyond the diameter of the shaft, the shaft further comprising delivery conduits extending longitudinally through the shaft and ribs and at least one port in each rib for a delivered drug or agent to exit each rib; and
thread tied about the longitudinal ribs to compress the ribs in a second position such that when the thread is released from the distal portion, the longitudinal ribs flare into their first position. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method of delivering drugs or other agents within a lumen by a catheter comprising:
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advancing the catheter with compressed, expandable-hollow, longitudinal ribs to a desired site within the lumen;
releasing the compressed longitudinal ribs, to allow the expandable longitudinal ribs to flare beyond the diameter of the shaft; and
delivering drugs or other agents to the site through the longitudinal ribs. - View Dependent Claims (20, 21, 22, 24, 25, 28)
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23. The method of 19, further comprising delivering the drugs or other agents to a region within the longitudinal ribs.
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26. A method of filtering thrombolytic material from a vessel within the cardiovascular system comprising:
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advancing a catheter to a desired site within the vessel;
retracting a portion of the catheter to allow a plurality of compressed longitudinal ribs in the distal portion of the catheter to flare beyond the diameter of the catheter to contact the lumen; and
delivering drugs or other agents out of the catheter through the ribs. - View Dependent Claims (27, 29, 30, 31)
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32. A catheter comprising:
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a shaft with a proximal and distal portion, the distal portion comprising longitudinal ribs which in a first position flare beyond the diameter of the shaft;
a thread for compressing the longitudinal ribs such that when the thread is released from the longitudinal ribs, the longitudinal ribs flare to the first position; and
means for delivering drugs to the longitudinal ribs.
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33. A catheter comprising:
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a shaft with a proximal and distal portion, the distal portion comprising logitudinal ribs which in a first position flare beyond the diameter of the shaft;
a member receiving at least the distal portion of the shaft, wherein the member and shaft can move with respect to each other such that when the member is retracted from the distal portion, the longitudinal ribs are in the first position and when the distal portion is within the member, the member compresses the longitudinal ribs into a second position; and
means for delivering drugs or other agents to the longitudinal ribs. - View Dependent Claims (34)
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35. A catheter comprising:
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a shaft with a proximal and distal portion, the distal portion comprising filtration means which in a first position flares beyond the diameter of the shaft;
means for compressing the filtration means such that when the means for compressing is released from the filtration means the filtration means flares to the first position, so that the filtration means bears against walls of a lumen when released at a site; and
means for delivering drugs or other agents to the filtration means.
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Specification