Thrombectomy catheter
First Claim
1. A thrombectomy catheter comprising a suction device, a proximal portion fluidly connected to the suction device, a tubular shaft attached at its proximal end to the proximal portion, and a tip portion at the distal end of the tubular shaft with a continuous suction lumen from the proximal portion to the tip portion wherein the tip portion comprises a suction port in fluid communication with the suction lumen, the tip portion having a first configuration and a second configuration that is curved relative to the first configuration.
3 Assignments
0 Petitions
Accused Products
Abstract
Thrombectomy catheters are presented that have curved tip portions. A suction lumen extends from at or near the proximal end of the catheter to a suction port at or near the tip portion of the catheter. The curves of the thrombectomy catheter can be selected to place a suction port at or near a vessel wall for the more effective removal of thrombus resulting from directing the suction in the direction of the thrombus. In some embodiments, the tip portion of the catheter can be transitioned from a first configuration for delivery of the catheter into the vessel to a second more curved configuration with a desired design for application of suction. The catheter can be moved in a circumferential and/or lateral direction to cover selected portions of the inner vessel wall. In some embodiments, a partially occlusive structure can be used to reduce and/or redirect flow within the vessel to improve performance of the thrombectomy.
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Citations
42 Claims
- 1. A thrombectomy catheter comprising a suction device, a proximal portion fluidly connected to the suction device, a tubular shaft attached at its proximal end to the proximal portion, and a tip portion at the distal end of the tubular shaft with a continuous suction lumen from the proximal portion to the tip portion wherein the tip portion comprises a suction port in fluid communication with the suction lumen, the tip portion having a first configuration and a second configuration that is curved relative to the first configuration.
- 13. A thrombectomy catheter comprising a suction device, a proximal portion fluidly connected to the suction device, a tubular shaft attached at its proximal end to the proximal portion, and a tip portion at the distal end of the tubular shaft with a continuous suction lumen from the proximal portion to the tip portion wherein the tip portion comprises a suction port in fluid communication with the suction lumen, the tip portion having a curve to present a displacement from the tip'"'"'s natural outer diameter of at least about 2 mm.
- 19. A thrombectomy catheter comprising a suction device, a proximal portion fluidly connected to the suction device, a tubular shaft attached at its proximal end to the proximal portion, and a tip portion at the distal end of the tubular shaft with a continuous suction lumen from the proximal portion to the tip portion wherein the tip portion comprises a suction port in fluid communication with the suction lumen, the tip portion having a curved structure that provides either at least three curves.
- 23. A method for removing thrombus from a vessel of a patient, the method comprising aspirating fluid from the vessel through a suction port in a thrombectomy catheter having a tubular shaft that forms a majority of the length of the catheter and a tip portion comprising the suction port, the tip portion being connected at the distal end of the shaft with an aspiration lumen extending from a suction device to the aspiration port, wherein the tip portion is curved such that the tip portion has a displacement across the vessel at least as large as the vessel diameter such that a section of the tip portion contacts the vessel wall.
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36. A method for removing thrombus from a vessel of a patient, the method comprising aspirating fluid and/or debris from the vessel through a suction port in a thrombectomy catheter having a tubular shaft that forms a majority of the length of the catheter and a tip portion comprising the suction port, the tip portion being connected at the distal end of the shaft with an aspiration lumen extending from a suction device to the aspiration port, wherein the tip portion is curved to position the suction port adjacent a vessel wall within a distance of the vessel wall that is no more than about 10 percent of the vessel diameter.
- 37. A thrombectomy catheter comprising a suction device, a proximal portion fluidly connected to the suction device, a tubular shaft attached at its proximal end to the proximal portion, a tip portion at the distal end of the tubular shaft with a continuous suction lumen from the proximal portion to the tip portion, and a partially occluding structure comprising a flap that extends outward from other portions of the catheter or a balloon that extends only partially around the circumference of the catheter, wherein the tip portion comprises a suction port in fluid communication with the suction lumen.
- 40. A method for removing thrombus from a vessel of a patient, the method comprising aspirating fluid from the vessel through a suction port in a thrombectomy catheter having a tubular shaft that forms a majority of the length of the catheter and a tip portion comprising the suction port, the tip portion being connected at the distal end of the shaft with an aspiration lumen extending from a suction device to the aspiration port, wherein flow is partially occluded with a partial occlusion structure that extends from the outer diameter of the catheter.
Specification