Ultrasonic catheter with axial energy field
First Claim
1. A catheter system for delivering ultrasonic energy to a treatment site within a body lumen, the catheter system comprising:
- a tubular body having a proximal end and a distal end; and
an inner core configured for insertion into the tubular body, the inner core comprising;
a first ultrasound radiating member axially separated from a separate and distinct second ultrasound radiating member by an intermediate flexible joint region, the first ultrasound radiating member positioned proximal to the second ultrasound radiating member, each ultrasound radiating member comprising a distal and proximal flat sides that extend generally perpendicular to a longitudinal axis of the tubular body and inner core, the distal and proximal flat sides of the ultrasound radiating member each including an electrode,an electrically conductive portion configured to allow a voltage difference to be applied to the electrodes of the first and second ultrasound radiating members, anda high acoustic impedance member, which is not one of the ultrasound radiating members, positioned proximal to the proximal flat side of the first ultrasound radiating member.
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Accused Products
Abstract
A catheter system for delivering ultrasonic energy to a treatment site within a body lumen comprises a tubular body. The tubular body has a proximal end, a distal end and an energy delivery section positioned between the proximal end and the distal end. The catheter further comprises an inner core configured for insertion into the tubular body. The inner core comprises a first ultrasound radiating member axially separated from a second ultrasound radiating member by an intermediate flexible joint region. The inner core further comprises an electrically conductive portion configured to allow a voltage difference to be applied to at least one of the ultrasound radiating members. The inner core further comprises a high impedance cap positioned proximal to at least one of the ultrasound radiating members.
362 Citations
26 Claims
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1. A catheter system for delivering ultrasonic energy to a treatment site within a body lumen, the catheter system comprising:
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a tubular body having a proximal end and a distal end; and an inner core configured for insertion into the tubular body, the inner core comprising; a first ultrasound radiating member axially separated from a separate and distinct second ultrasound radiating member by an intermediate flexible joint region, the first ultrasound radiating member positioned proximal to the second ultrasound radiating member, each ultrasound radiating member comprising a distal and proximal flat sides that extend generally perpendicular to a longitudinal axis of the tubular body and inner core, the distal and proximal flat sides of the ultrasound radiating member each including an electrode, an electrically conductive portion configured to allow a voltage difference to be applied to the electrodes of the first and second ultrasound radiating members, and a high acoustic impedance member, which is not one of the ultrasound radiating members, positioned proximal to the proximal flat side of the first ultrasound radiating member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An ultrasound assembly comprising:
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an elongate member having a proximal region and a distal region opposite the proximal region; an ultrasound radiating member coupled to the distal region of the elongate member and having the same longitudinal axis as the distal region of the elongate member, the ultrasound radiating member configured to generate a distribution of ultrasonic energy that has a greater density in a region axially distal to the ultrasound radiating member than in an annular region surrounding the ultrasound radiating member, the ultrasound radiating member comprising a distal flat side and a proximal flat side that each extend generally perpendicular to a longitudinal axis of the elongate member, the distal and proximal flat sides of the ultrasound radiating member each including an electrode; and a high acoustic impedance member positioned adjacent the proximal flat side of the ultrasound radiating member. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification