Devices and methods for aspirating from filters
First Claim
1. An aspiration catheter, comprising:
- an elongate catheter body;
a guidewire lumen extending longitudinally through at least a portion of the elongate catheter body, the guidewire lumen having a proximal end and a distal end and being adapted for slidably receiving a guidewire; and
an aspiration lumen extending longitudinally through the elongate catheter body, the aspiration lumen having a proximal end and a distal end, the aspiration lumen having an aspiration port along the distal end sized for aspirating particles from a blood vessel;
wherein the elongate catheter body includes a distal segment wherein the aspiration lumen extends distally beyond the distal end of the guidewire lumen.
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Accused Products
Abstract
A method and apparatus for aspirating emboli and other particles from a vascular filter within a patient'"'"'s vasculature. The aspiration catheter comprises an elongate body with an aspiration lumen having an aspiration port at the distal end and a guidewire lumen for receiving a guidewire. The aspiration lumen extends substantially beyond the distal end of the guidewire lumen such that the aspiration port may be,inserted into the interior volume of a filter. Accordingly, embolic particles may be aspirated from the interior volume of the filter. The aspiration port may have an oblique shape for increasing aspiration efficiency. The aspiration catheter may also have a therapy device mounted thereon, such as, for example, an inflatable balloon.
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Citations
41 Claims
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1. An aspiration catheter, comprising:
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an elongate catheter body;
a guidewire lumen extending longitudinally through at least a portion of the elongate catheter body, the guidewire lumen having a proximal end and a distal end and being adapted for slidably receiving a guidewire; and
an aspiration lumen extending longitudinally through the elongate catheter body, the aspiration lumen having a proximal end and a distal end, the aspiration lumen having an aspiration port along the distal end sized for aspirating particles from a blood vessel;
wherein the elongate catheter body includes a distal segment wherein the aspiration lumen extends distally beyond the distal end of the guidewire lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An aspiration catheter system, comprising:
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a guidewire;
a vascular filter disposed along a distal end portion of the guidewire;
an elongate catheter body;
a guidewire lumen extending longitudinally through at least a portion of the elongate catheter body, the guidewire lumen having a proximal end and a distal end and being adapted for slidably receiving the guidewire; and
an aspiration lumen extending longitudinally through the elongate catheter body, the aspiration lumen having a proximal end and a distal end, the aspiration lumen having an aspiration port along the distal end;
wherein the elongate catheter body includes a distal segment in which the aspiration lumen extends distally beyond the distal end of the guidewire lumen such that the aspiration port is advanceable into an interior volume of the vascular filter for removing embolic particles therefrom. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for treating a blood vessel, comprising:
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providing a guidewire having a proximal end and a distal end and an expandable member disposed adjacent the distal end;
providing an aspiration catheter defining a guidewire lumen and an aspiration lumen having an aspiration port, the aspiration port being located distal to a distal end of the guidewire lumen;
delivering the guidewire transluminally through the blood vessel until the expandable member is located distal to a treatment site;
expanding the expandable member within the blood vessel such that the expandable member forms an interior volume adapted to capture and retain particles therein;
transluminally delivering the aspiration catheter over the guidewire until the aspiration port is located within the interior volume of the expandable member; and
applying a negative pressure at a proximal end of the aspiration lumen, thereby drawing particles from the interior volume into the aspiration lumen. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28. A method for performing a procedure in a blood vessel, comprising:
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delivering an elongate member transluminally through the blood vessel, the elongate member having a proximal end and a distal end and an expandable member disposed adjacent the distal end, the elongate member being advanced until the distal end is located in a desired location;
expanding the expandable member within the blood vessel, the expandable member when expanded at least partially enclosing an interior volume adapted to retain particles therein;
delivering an aspiration catheter transluminally through the blood vessel relative to the elongate member, the aspiration catheter having a proximal connector adapted for connection to a source of negative pressure and an aspiration port in fluid communication with the proximal connector and an aspiration lumen extending between the proximal connector and the aspiration port; and
applying a negative pressure to the proximal connector of the aspiration catheter while the aspiration port of the aspiration catheter is positioned within the interior volume of the expandable member to draw particles from the interior volume and out of the blood vessel. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification