ULTRASOUND CATHETER DEVICES AND METHODS
1 Assignment
0 Petitions
Accused Products
Abstract
Ultrasound catheter devices and methods provide enhanced disruption of blood vessel obstructions. Generally, an ultrasound catheter device includes an elongate flexible catheter body with one or more lumens, an ultrasound transmission member extending longitudinally through the catheter body lumen and a distal head coupled with the transmission member and positioned adjacent the distal end of the catheter body for disrupting occlusions. A proximal housing of the catheter device may include one or more features for dissipating heat from the ultrasound transmission wire, such as a fluid inlet aperture for passage of fluid, use of heat conductive materials in the proximal housing, surface features to increase the housing'"'"'s surface area, heat conductive members disposed adjacent the transmission member and the like. Various irrigation fluids may be used, such as cooled, oxygen supersaturated or lubricious fluids.
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Citations
76 Claims
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1-40. -40. (canceled)
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41. An ultrasound catheter system for disrupting occlusions in blood vessels, the system comprising:
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an ultrasound catheter device, comprising; an elongate flexible catheter body having a proximal end, a distal end and at least one lumen; an ultrasound transmission member extending longitudinally through the lumen of the catheter body and having a proximal end and a distal end; a distal head coupled with the distal end of the ultrasound transmission member and disposed adjacent the distal end of the catheter body; a sonic connector coupled with the proximal end of the ultrasound transmission member for coupling the ultrasound transmission member with an ultrasound transducer device; and a proximal housing coupled with the proximal end of the catheter body and housing the sonic connector and a proximal portion of the ultrasound transmission wire, wherein the housing includes at least one fluid inlet for allowing passage of one or more heat dissipating fluids into an inner cavity of the housing; an ultrasound generator removably coupled with the ultrasound catheter device; and a fluid cooling device removably coupled with the ultrasound catheter device for cooling the heat dissipating fluid(s). - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 56, 57, 58, 76)
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54. (canceled)
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55. (canceled)
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59. A method for disrupting an occlusion in a blood vessel, the method comprising:
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positioning an ultrasound catheter in the blood vessel such that a distal end of the catheter is adjacent the occlusion; transmitting ultrasound energy to an ultrasound transmission member of the ultrasound catheter to disrupt the occlusion into multiple occlusion fragments; and passing a cooled irrigation fluid through the ultrasound catheter to dissipate heat away from the ultrasound transmission member. - View Dependent Claims (60, 61, 62, 63, 64)
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65. A method for disrupting an occlusion in a blood vessel, the method comprising:
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positioning an ultrasound catheter in the blood vessel such that a distal end of the catheter is adjacent the occlusion; transmitting ultrasound energy to an ultrasound transmission member of the ultrasound catheter to disrupt the occlusion into multiple occlusion fragments; and passing an oxygen supersaturated irrigation fluid through the ultrasound catheter to dissipate heat away from the ultrasound transmission member. - View Dependent Claims (66, 67, 68, 69)
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70. A method for disrupting an occlusion in a blood vessel, the method comprising:
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positioning an ultrasound catheter in the blood vessel such that a distal end of the catheter is adjacent the occlusion; transmitting ultrasound energy to an ultrasound transmission member of the ultrasound catheter to disrupt the occlusion into multiple occlusion fragments; and passing a lubricious irrigation fluid through the ultrasound catheter to dissipate heat away from the ultrasound transmission member and reduce friction between the ultrasound transmission member and an ultrasound catheter body. - View Dependent Claims (71, 72, 73, 74, 75)
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Specification