Sheath for use with an ultrasound element
First Claim
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1. A method for treating a clot in a blood vessel, the method comprising:
- advancing a guidewire at least partially through a clot,advancing a sheath having a utility lumen, a distal energy delivery section, and a drug delivery member over the guidewire such that at least a portion of the distal energy delivery section is located in the clot,withdrawing the guidewire from the utility lumen,when at least a portion of the distal energy delivery section is located in the clot, inserting an elongated body having at least one ultrasound element into the utility lumen defined by the sheath, such that the at least one ultrasound element is positioned at least partially within the distal energy delivery section,abutting a proximal stop portion of the elongated body against a proximal portion of the sheath, wherein the proximal stop portion comprises a conically-shaped portion of the elongated body, at least a portion of which has a larger diameter than an inner diameter of the utility lumen,delivering a drug solution to the clot through the drug delivery member,delivering ultrasound energy to the clot, andmoving the elongated body relative to the sheath to enhance an effect of the ultrasonic energy.
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Abstract
A system for delivering ultrasound energy to a treatment section in a vessel is disclosed. The system includes a sheath with a utility lumen and an energy delivery section at least partially constructed from a material which transmits ultrasound energy. The system also includes a drug delivery member having a plurality of drug delivery ports which are positioned adjacent the energy delivery section. The system further includes an elongated body including at least one ultrasound element and configured to be movably positioned within the utility lumen to transmit the ultrasound energy from the ultrasound element through the energy delivery section.
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Citations
31 Claims
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1. A method for treating a clot in a blood vessel, the method comprising:
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advancing a guidewire at least partially through a clot, advancing a sheath having a utility lumen, a distal energy delivery section, and a drug delivery member over the guidewire such that at least a portion of the distal energy delivery section is located in the clot, withdrawing the guidewire from the utility lumen, when at least a portion of the distal energy delivery section is located in the clot, inserting an elongated body having at least one ultrasound element into the utility lumen defined by the sheath, such that the at least one ultrasound element is positioned at least partially within the distal energy delivery section, abutting a proximal stop portion of the elongated body against a proximal portion of the sheath, wherein the proximal stop portion comprises a conically-shaped portion of the elongated body, at least a portion of which has a larger diameter than an inner diameter of the utility lumen, delivering a drug solution to the clot through the drug delivery member, delivering ultrasound energy to the clot, and moving the elongated body relative to the sheath to enhance an effect of the ultrasonic energy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for delivering ultrasound energy and a drug solution to a vascular occlusion, the method comprising:
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advancing a sheath having a lumen through a patient'"'"'s vasculature, such that a distal end of the sheath is advanced at least partially through the vascular occlusion; inserting an elongated body having at least one ultrasound element into the lumen; after the distal end of the sheath is advanced at least partially through the vascular occlusion, advancing the elongated body through the lumen until the at least one ultrasound element is positioned adjacent the vascular occlusion; abutting a proximal stop portion of the elongated body against a proximal portion of the sheath, wherein the proximal stop portion comprises a conically-shaped portion of the elongated body, at least a portion of which has a larger diameter than an inner diameter of the lumen; delivering a drug solution to the vascular occlusion from the sheath, and delivering ultrasound energy to the vascular occlusion. - View Dependent Claims (12, 13)
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14. A method of treating an occlusion in a blood vessel at a treatment site, the method comprising:
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advancing a guidewire to the treatment site; advancing a sheath having a lumen and a drug delivery member over the guidewire, such that at least a portion of the sheath is advanced at least partially through the occlusion; withdrawing the guidewire from the lumen; inserting an elongated body having at least one ultrasound element into the lumen; advancing the elongated body through the lumen such that the at least one ultrasound element is positioned at the treatment site; abutting a proximal stop portion of the elongated body against a proximal portion of the sheath, wherein the proximal stop portion comprises a conically-shaped portion of the elongated body, at least a portion of which has a larger diameter than an inner diameter of the lumen; delivering a drug solution to the treatment site through the drug delivery member; and delivering ultrasound energy to the treatment site. - View Dependent Claims (15)
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16. A method for treating a clot in a blood vessel, the method comprising:
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advancing a guidewire at least partially through a clot; providing a sheath having a utility lumen, a proximal region having a first ultrasonic absorption, a distal energy delivery section having a second ultrasonic absorption that is lower than the first ultrasonic absorption, and a drug delivery member; advancing the sheath over the guidewire such that at least a portion of the distal energy delivery section is located in the clot; withdrawing the guidewire from the utility lumen; inserting an elongated body having at least one ultrasound element into the utility lumen defined by the sheath, such that the at least one ultrasound element is positioned at least partially within the distal energy delivery section; abutting a proximal stop portion of the elongated body against a proximal portion of the sheath, wherein the proximal stop portion comprises a conically-shaped portion of the elongated body, at least a portion of which has a larger diameter than an inner diameter of the utility lumen; delivering a drug solution to the clot through the drug delivery member; delivering ultrasound energy to the clot; and moving the elongated body relative to the sheath to enhance an effect of the ultrasonic energy. - View Dependent Claims (17, 18, 19)
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20. A method for treating a clot in a blood vessel, the method comprising:
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advancing a guidewire at least partially through a clot; providing a sheath having a utility lumen, a distal energy delivery section, and a drug delivery member that is hydraulically separated from the utility lumen; advancing the sheath over the guidewire such that at least a portion of the distal energy delivery section is located in the clot; withdrawing the guidewire from the utility lumen; when at least a portion of the distal energy delivery section is located in the clot, inserting an elongated body having at least one ultrasound element into the utility lumen defined by the sheath, such that the at least one ultrasound element is positioned at least partially within the distal energy delivery section; delivering a drug solution to the clot through the drug delivery member; delivering ultrasound energy to the clot; and moving the elongated body relative to the sheath to enhance an effect of the ultrasonic energy. - View Dependent Claims (21, 22, 23)
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24. A method for treating a clot in a blood vessel, the method comprising:
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advancing a guidewire at least partially through a clot; providing a sheath having a utility lumen, a distal energy delivery section, and a drug delivery member having a plurality of drug delivery ports on a sheath circumferential surface; advancing the sheath over the guidewire such that at least a portion of the distal energy delivery section is located in the clot; withdrawing the guidewire from the utility lumen; inserting an elongated body having at least one ultrasound element into the utility lumen defined by the sheath, such that the at least one ultrasound element is positioned at least partially within the distal energy delivery section; delivering a drug solution to the clot through the plurality of drug delivery ports; delivering ultrasound energy to the clot; and moving the elongated body relative to the sheath to enhance an effect of the ultrasonic energy. - View Dependent Claims (25, 26, 27)
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28. A method for treating a clot in a blood vessel, the method comprising:
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advancing a guidewire at least partially through a clot, advancing a sheath having a utility lumen, a distal energy delivery section, and a drug delivery member over the guidewire such that at least a portion of the distal energy delivery section is located in the clot, withdrawing the guidewire from the utility lumen, when at least a portion of the distal energy delivery section is located in the clot, inserting an elongated body having at least one ultrasound element into the utility lumen defined by the sheath, such that the at least one ultrasound element is positioned at least partially within the distal energy delivery section, delivering a drug solution to the clot through the drug delivery member, delivering ultrasound energy to the clot, and moving the elongated body relative to the sheath to enhance an effect of the ultrasonic energy, wherein the elongated body is not extended past a distal end of the sheath. - View Dependent Claims (29, 30, 31)
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Specification