Systems and methods for clot disruption and retrieval
First Claim
1. A catheter for removing occlusive material from a body lumen, said catheter comprising:
- a catheter body having a proximal end, a distal end, and a lumen therethrough;
a radially expansible positioning cage near the distal end of the catheter body, wherein the catheter body has a lumen and at least one infusion port disposed t deliver an agent from the lumen to within the interior of the cage; and
a radially expansible macerator configured to break up occlusive material within the cage and draw the material into the catheter body lumen.
7 Assignments
0 Petitions
Accused Products
Abstract
Thrombectomy and other treatments are achieved using a catheter having a positioning cage and a macerator within the positioning cage. The catheter is introduced to a target body lumen, typically a blood vessel, and a positioning cage deployed at a treatment site. The macerator is then operated to disrupt thrombus, clot, or other occlusive materials at the treatment site, and the catheter is used to collect and remove the disruptive materials from the body lumen. In particular examples, the macerator may be radially expansible and optionally rotated and/or axially translated within the positioning cage to effect disruption of the occlusive material.
211 Citations
33 Claims
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1. A catheter for removing occlusive material from a body lumen, said catheter comprising:
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a catheter body having a proximal end, a distal end, and a lumen therethrough;
a radially expansible positioning cage near the distal end of the catheter body, wherein the catheter body has a lumen and at least one infusion port disposed t deliver an agent from the lumen to within the interior of the cage; and
a radially expansible macerator configured to break up occlusive material within the cage and draw the material into the catheter body lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for thrombus in a blood vessel, said method comprising:
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positioning a catheter within a region of thrombus in the blood vessel;
centering the catheter along an axis of the blood vessel within a positioning cage;
releasing a thrombolytic agent through the catheter to said region; and
rotating a macerator to disrupt the clot. - View Dependent Claims (13, 14)
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15. A catheter for removing occlusive material from a body lumen, said catheter comprising:
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a catheter body having a proximal end, a distal end, and a lumen therethrough;
a radially expansible positioning cage near the distal end of the catheter body;
a radially expansible macerator configured to break up occlusive material within the cage and draw the material into the catheter body lumen; and
means for within the catheter body for aspirating material disrupted by the macerator from within the cage. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A catheter for removing occlusive material from a body lumen, said catheter comprising:
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a catheter body having a proximal end, a distal end, and a lumen therethrough;
a radially expansible positioning cage near the distal end of the catheter body;
a radially expansible macerator configured to break up occlusive material within the cage and draw the material into the catheter body lumen; and
means for selectively adjusting the diameter of the radially expansible positioning cage and the radially expansible macerator. - View Dependent Claims (27, 28, 29, 30, 31)
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32. A method for disrupting and removing occlusive material from a blood vessel, said method comprising:
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introducing a first catheter into the blood vessel from one side of the occlusive material;
introducing a second catheter into the blood vessel from another side of the clot;
releasing a thrombolytic agent and mechanically disrupting the clot with the first catheter; and
aspirating the disrupted clot with the second catheter. - View Dependent Claims (33)
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Specification