Methods and apparatus for assisted aspiration
First Claim
Patent Images
1. An aspiration catheter comprising:
- a catheter body having a distal end, a proximal end, and an aspiration lumen therethrough, wherein the aspiration lumen terminates at a distal aspiration port;
a hub at the proximal end of the catheter body, said hub adapted to connect the aspiration lumen to a vacuum source; and
means at the distal aspiration port for disrupting sealing between the port and material being aspirated.
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Abstract
An aspiration catheter comprises a catheter body having an aspiration lumen therethrough. The distal opening of the aspiration lumen can be modified in various ways or can have the addition of structure in order to disrupt sealing between the port and material being aspirated. Examples of modifications include slots, castellations, zig-zag features, and other geometries which resist sealing of aspirated material. Blades, rollers, vibrating elements, and other structures may be provided within or around the distal end of the aspiration lumen in order to dislodge and disrupt aspirated material which can seal against the opening.
123 Citations
32 Claims
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1. An aspiration catheter comprising:
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a catheter body having a distal end, a proximal end, and an aspiration lumen therethrough, wherein the aspiration lumen terminates at a distal aspiration port;
a hub at the proximal end of the catheter body, said hub adapted to connect the aspiration lumen to a vacuum source; and
means at the distal aspiration port for disrupting sealing between the port and material being aspirated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method for aspirating clot from a blood vessel, said method comprising:
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engaging clot with an aspiration port of an aspiration catheter, applying a vacuum to an aspiration lumen in the catheter to draw clot into the lumen and through the aspiration port, and disrupting sealing between the clot and the port as the clot is drawn into the lumen. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
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Specification