Ultrasound catheter devices and methods
First Claim
1. An ultrasound catheter for disrupting occlusions in blood vessels, the ultrasound catheter 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 member,a heat absorption member disposed around the ultrasound transmission member, the heat absorption member comprising a metalized elastomer;
a first O-ring member disposed around the ultrasound transmission member, and disposed proximal to the heat absorption member; and
a second O-ring member disposed around the ultrasound transmission member, and disposed distal to the heat absorption member.
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.
216 Citations
37 Claims
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1. An ultrasound catheter for disrupting occlusions in blood vessels, the ultrasound catheter comprising:
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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 member, a heat absorption member disposed around the ultrasound transmission member, the heat absorption member comprising a metalized elastomer; a first O-ring member disposed around the ultrasound transmission member, and disposed proximal to the heat absorption member; and a second O-ring member disposed around the ultrasound transmission member, and disposed distal to the heat absorption member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An ultrasound catheter for disrupting occlusions in blood vessels, the ultrasound catheter comprising:
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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, and member; and a plurality of O-ring members disposed around and contacting a portion of the ultrasound transmission member wherein the proximal housing comprises a fluid inlet for allowing passage of one or more heat dissipating fluids into an inner cavity of the proximal housing, and wherein the inlet is disposed along the proximal housing such that the heat dissipating fluid(s) passing through the inlet flows within the inner cavity, and across the plurality of 0-ring members in a distal direction before contacting the ultrasound transmission member. - View Dependent Claims (14, 15, 16, 17, 18)
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19. An ultrasound catheter for disrupting occlusions in blood vessels, the ultrasound catheter comprising:
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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; a vibration absorption member disposed around a portion of the ultrasound transmission member; 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 proximal housing comprises a fluid inlet port for allowing passage of a heat dissipating fluid into an inner cavity of the proximal housing, and wherein the fluid inlet port is disposed along the proximal housing such that the heat dissipating fluid passing through the fluid inlet flows across a portion of the ultrasound transmission member proximal to the vibration absorption member, then flows across the vibration absorption member in a distal direction before contacting a portion of the ultrasound transmission member distal to the vibration absorption member. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. An ultrasound catheter for disrupting occlusions in blood vessels, the ultrasound catheter comprising:
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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; an O-ring member disposed around a portion of the ultrasound transmission member; 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-wi*e member; wherein the proximal housing comprises a fluid inlet port for allowing passage of a heat dissipating fluid into an inner cavity of the proximal housing, and wherein the fluid inlet port is disposed along the proximal housing such that the heat dissipating fluid passing through the fluid inlet flows across a portion of the ultrasound transmission member proximal to the O-ring member, then flows across the O-ring member in a distal direction before contacting a portion of the ultrasound transmission member distal to the vibration absorption member. - View Dependent Claims (32, 33, 34, 35, 36, 37)
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Specification