Extendable Device On An Aspiration Catheter
First Claim
1. A method for retrieving an embolism protection device having a low profile configuration and an extended deployed configuration, the method comprising withdrawing the embolism protection device into an aspiration catheter within a patient'"'"'s vessel while aspiration is being applied, wherein an extendable device associated with the aspiration catheter is extended and partially occludes flow relative to the flow in which the extendable device does not have an extended configuration, wherein the extendable device lacks cylindrical symmetry around the aspiration catheter.
2 Assignments
0 Petitions
Accused Products
Abstract
Aspiration catheters generally comprise a tube or shaft with an aspiration opening at or near its distal end and a suction device that is at or near the proximal end of the catheter. An aspiration lumen extends from the suction device to the aspiration opening. The aspiration catheter can be associated with an extendable device such that their functions can be combined advantageously. The extendable device can function as a treatment structure and/or as a flow modifier. A treatment structure can be used to expand a constriction in a vessel or to deliver a treatment element into the vessel. A flow modifier generally controls the flow to decrease flow in the vicinity of the aspiration opening to improve the efficiency of the aspiration. Various relationships between the extendable structure and the aspiration catheter are described. Balloons can be used effectively as treatment structures or flow modifiers, although self-extending stents can be used as treatment structures and flaps or the like can be used as flow modifiers.
151 Citations
76 Claims
- 1. A method for retrieving an embolism protection device having a low profile configuration and an extended deployed configuration, the method comprising withdrawing the embolism protection device into an aspiration catheter within a patient'"'"'s vessel while aspiration is being applied, wherein an extendable device associated with the aspiration catheter is extended and partially occludes flow relative to the flow in which the extendable device does not have an extended configuration, wherein the extendable device lacks cylindrical symmetry around the aspiration catheter.
- 8. An aspiration catheter comprising a suction connection, a proximal portion operably connected to the suction connection, a shaft and a self-extending structure, the shaft being operably connected to the proximal portion and having an aspiration opening connected to an aspiration lumen in fluid communication with the suction connection wherein the self-extending structure is within about 20 centimeters of the aspiration opening.
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17-33. -33. (canceled)
- 34. A medical device for performing less invasive medical procedures within a patient, the device comprising an aspiration catheter, a balloon apparatus comprising a balloon element and a balloon catheter, the aspiration catheter having an aspiration lumen operably connected to a suction device and an aspiration opening at the distal end of the aspiration lumen, wherein the aspiration opening is distal to the balloon element and wherein the aspiration opening has an area greater than the average cross section of the aspiration lumen.
- 47. A medical device for performing less invasive medical procedures within a patient, the device comprising a guide structure, an aspiration catheter, a balloon element mounted on the aspiration catheter and a fluid source operably connected to the balloon element, wherein the aspiration catheter comprises a suction device, a proximal portion, a rapid exchange segment having a distal end and a shaft attached between the proximal portion and the rapid exchange segment, wherein the rapid exchange segment comprises a port adjacent the connection between the shaft and the rapid exchange segment, wherein the guide structure passes through the port and wherein the rapid exchange segment has a single lumen.
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58-67. -67. (canceled)
- 68. A medical device comprising an aspiration catheter, a treatment catheter and a guide structure, wherein the aspiration catheter comprises a rapid exchange segment, a proximal section, a shaft connected between the rapid exchange segment and the proximal section to form an aspiration lumen extending between the proximal section and the rapid exchange section, and a suction device connected to the proximal section and in fluid communication with the aspiration lumen, the rapid exchange segment comprising a treatment catheter port, the treatment catheter comprising a shaft, a treatment structure mounted on the shaft, and an actuation device operably connected to the treatment structure, wherein the shaft of the treatment catheter extends through the treatment catheter port.
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73-75. -75. (canceled)
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76. An aspiration catheter comprising a suction connection, a proximal portion operably connected to the suction connection, a shaft and an extendable device, the shaft being operably connected to the proximal portion and having an aspiration opening connected to an aspiration lumen in fluid communication with the suction connection wherein the extendable device lacks cylindrical symmetry around the aspiration catheter.
Specification