Mechanical pump for removal of fragmented matter and methods of manufacture and use
First Claim
1. An over-the-wire material transport catheter comprising:
- a catheter body having a proximal end, a distal end, and a lumen therebetween; and
an impeller rotatably disposed in the lumen of the catheter body, said impeller including a tubular shaft having a central guidewire lumen and a helical rotor extending at least partially over an exterior surface thereof.
7 Assignments
0 Petitions
Accused Products
Abstract
Material transport catheters and methods for their use rely on rotation of an impeller within a catheter body. The impeller preferably comprises an inner tube or shaft having a helical rotor formed over an outer surface thereof. Optionally, in the case of a tubular shaft, a second helical rotor may be provided within the shaft lumen in order to induce flow in opposite or in the same direction as induced by the outer helical rotor. Catheters may further comprise structures near their distal ends for disrupting clot, and are preferably introduceable over guidewires where the helical rotors are rotated directly over the guidewire. The catheters may include two or more impellers or impellers having two or more rotors in order to provide for circulation of materials at a target site within a patient body lumen.
235 Citations
39 Claims
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1. An over-the-wire material transport catheter comprising:
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a catheter body having a proximal end, a distal end, and a lumen therebetween; and
an impeller rotatably disposed in the lumen of the catheter body, said impeller including a tubular shaft having a central guidewire lumen and a helical rotor extending at least partially over an exterior surface thereof. - View Dependent Claims (2, 3, 4)
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5. A selective infusion-aspiration catheter comprising:
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a catheter body having a proximal end, a distal end, and a lumen therebetween;
an impeller rotatably disposed in the lumen of the catheter body; and
a driver coupleable to the impeller to selectively rotate said impeller in a first direction to induce aspiration through the catheter body lumen or in a second direction to induce infusion through the catheter body. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. A circulation catheter comprising:
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a catheter body having a proximal end, a distal end, and at least one lumen therebetween;
a first impeller arranged in a lumen of the catheter body to aspirate materials from the distal end to the proximal end of the catheter body; and
a second impeller arranged in a lumen of the catheter body to infuse materials from the proximal end to the distal end of the catheter body. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method for transporting materials between a target site in a body lumen of a patient, and a location external to the patient, said method comprising:
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introducing a distal end of a catheter to the target site over a guidewire; and
rotating a first impeller over a guidewire within a lumen of the catheter to transport material between the distal and a proximal end of the catheter including the step of selectively rotating the first impeller to transport material from the proximal end of the catheter through the catheter lumen to the distal end of the catheter. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
a catheter; and
instructions for use setting forth the method of claim 22.
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30. A kit as claim 29, further comprising a motor drive unit.
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31. A method for selectively infusing and aspirating material between a target site in a body lumen of a patient, and a location external to the patient, said method comprising:
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introducing a distal end of a catheter to the target site;
rotating an impeller within a lumen of the catheter in a first direction to aspirate material from the target site; and
rotating the impeller within the lumen in a second direction to infuse material to the target site. - View Dependent Claims (32, 33)
a catheter; and
instructions for use setting forth the method of claim 31.
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33. A kit as in claim 32, further comprising a motor drive unit.
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34. A method for infusing and aspirating material through a target site in a body lumen of a patient, said method comprising:
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introducing a distal end of a catheter to the target site;
rotating a first impeller within a lumen of the catheter to transport material to the target site; and
rotating a second impeller within a lumen of the catheter to transport material away from the target site. - View Dependent Claims (35, 36, 37, 38, 39)
a catheter, and instructions for use setting forth the method of claim 34.
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39. A kit as in claim 38, further comprising a motor drive unit.
Specification