Ultrasonic ablation device adapted for guidewire passage
First Claim
1. An ultrasonic device for removing obstructions from blood vessels, said device comprising:
- a guidewire;
an elongate flexible catheter having a proximal end, a distal end, and a lumen extending longitudinally therethrough;
an ultrasound transmission member extending longitudinally through the luemn of the flexible catheter, said ultrasonic transmission member having a distal end and a proximal end;
a distal head formed on the distal end of said ultrasound transmission member and extending at least partially beyond the distal end of the catheter; and
a guidewire passage aperture extending through said distal head in axial alignment with the lumen of said catheter, wherein said guidewire may be passed through said aperture and thrugh the lumen of said catheter such that said guidewire is spaced apart from said ultrasound transmission member within the lumen.
1 Assignment
0 Petitions
Accused Products
Abstract
An ultrasonic ablation device for effecting ultrasonic ablation of intravascular obstructions such as plaque or thrombi. The ultrasonic ablation device has a) an elongate catheter body, b) a wave guide or ultrasound transmission wire extending through the elongate catheter body, and c) a distal head or probe member positioned at the distal end of the catheter body. A guidewire lumen or passageway extends longitudinally through the catheter body and a guidewire aperture or passageway extends through the distal head or probe such that a guidewire may be passed through the distal head or probe and through the catheter body. Also disclosed is an improved distal head or probe which may be incorporated in any elongate ultrasonic ablation device, the improvement comprising the formation of a concavity or indentation in the distal or frontal face of the distal head or probe to improve the cavitation created thereby.
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Citations
43 Claims
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1. An ultrasonic device for removing obstructions from blood vessels, said device comprising:
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a guidewire; an elongate flexible catheter having a proximal end, a distal end, and a lumen extending longitudinally therethrough; an ultrasound transmission member extending longitudinally through the luemn of the flexible catheter, said ultrasonic transmission member having a distal end and a proximal end; a distal head formed on the distal end of said ultrasound transmission member and extending at least partially beyond the distal end of the catheter; and a guidewire passage aperture extending through said distal head in axial alignment with the lumen of said catheter, wherein said guidewire may be passed through said aperture and thrugh the lumen of said catheter such that said guidewire is spaced apart from said ultrasound transmission member within the lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An ultrasonic device for removing obstructions from blood vessels, said device comprising:
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a guidewire; an elongate flexible catheter having a proximal end, a distal end, and at least two lumens extending longitudinally therethrough; an ultrasound transmission member extending longitudinally through a first lumen of the flexible catheter, said ultrasonic transmission member having a distal end and a proximal end; a distal head formed on the distal end of said ultrasound transmission member and extending at least partially beyond the distal end of the catheter; a guidewire passage aperture extending through said distal head in axial alignment with the first lumen of said catheter, wherein said guidewire may be passed through said aperture and through a second lumen of said catheter, the first and second lumens spaced apart from each other and preventing contact of said guidewire with said ultrasound transmission member. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. An ultrasonic device for removing obstructions from blood vessels, said device comprising:
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a guidewire; an elongate flexible catheter having a proximal end, a distal end, and at least one lumen extending longitudinally therethrough; an ultrasound transmission member extending longitudinally through a lumen of the flexible catheter, said ultrasonic transmission member having a distal end and a proximal end; a distal head formed on the distal end of said ultrasound transmission member and extending at least partially beyond the distal end of the catheter; a guidewire passage aperture extending through said distal head in axial alignment with a lumen of said catheter, wherein said guidewire may be passed through said aperture and through a lumen of said catheter; a guidewire exit aperture formed at the proximal end of said flexible catheter to permit passage of a guidewire out of said flexible catheter; a guidewire diverter member insertable into said flexible catheter adjacent said guidewire exit aperture to divert one end of said guidewire out of said guidewire exit aperture, said diverter member comprising a tubular body having a hollow lumen extending therethrough; and means positioned on said guidewire diverter member for locking said guidewire in a substantially fixed position relative to said catheter, said locking means comprising; gripping apparatus comprising a hollow portion through which said tubular body passes, said hollow portion having a slot extending therethrough, and said gripping apparatus having ribs provided on an outer surface; and a U-shaped slidable locking member having inner surfaces and a central tongue insertable into said slot, said tongue provided with an aperture at a central portion thereat, and a plurality of sets of grooves formed on the inner surfaces of the slidable locking member; said aperture of said tongue aligned with said hollow lumen of said tubular body for said guidewire to extend therethrough, said ribs adapted to be seated within at least one set of said plurality of sets of grooves. - View Dependent Claims (38, 39, 40)
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41. An ultrasonic device for removing obstructions from blood vessels, said device comprising:
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a guidewire; an elongate flexible catheter having a proximal end, a distal end, and at least one lumen extending longitudinally therethrough; an ultrasound transmission member extending longitudinally through the lumen of the flexible catheter, said ultrasonic transmission member having a distal end and a proximal end; a distal head formed on the distal end of said ultrasound transmission member and extending at least partially beyond the distal end of the catheter; a guidewire passage aperture extending through said distal head in axial alignment with the lumen of said catheter, wherein said guidewire may be passed through said aperture and through the lumen of said catheter; a guidewire exit aperture formed at the proximal end of said flexible catheter to permit passage of said guidewire out of said flexible catheter; and means positioned on said guidewire exit aperture for locking said guidewire in a substantially fixed position relative to said catheter, wherein said locking means comprises; a tubular body insertable into said hollow inner chamber adjacent said guidewire exit aperture to divert one end of said guidewire out of said guidewire exit aperture, said tubular body having a hollow lumen extending therethrough; gripping apparatus comprising a hollow portion through which said tubular body passes, said hollow portion having a slot extending therethrough, and said gripping apparatus having ribs provided on an outer surface; and a U-shaped slidable locking member having inner surfaces and a central tongue insertable into said slot, said tongue provided with an aperture at a central portion thereat, and a plurality of sets of grooves formed on the inner surfaces of the slidable locking member; said aperture of said tongue aligned with said hollow lumen of said tubular body for said guidewire to extend therethrough, said ribs adapted to be seated within at least one set of said plurality of sets of grooves.
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42. An ultrasonic device for removing obstructions from blood vessels, said device comprising:
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a guidewire; an elongate flexible catheter having a proximal end, a distal end, and at least one lumen extending longitudinally therethrough; an ultrasound transmission member extending longitudinally through a lumen of the flexible catheter, said ultrasonic transmission member having a distal end and a proximal end; a distal head formed on the distal end of said ultrasound transmission member and extending at least partially beyond the distal end of the catheter; a guidewire passage aperture extending through said distal head in axial alignment with the first lumen of said catheter, wherein said guidewire may be passed through said aperture and through a second lumen of said catheter; a guidewire exit aperture formed at the proximal end of said flexible catheter to permit passage of a guidewire out of said flexible catheter; and a guidewire diverter member insertable into said flexible catheter adjacent said guidewire exit aperture to divert one end of said guidewire out of said guidewire exit aperture, wherein said guidewire diverter member comprises a tubular member having a hollow lumen extending therethrough and a beveled tip, said tubular member insertable into said guidewire exit aperture, wherein said diverter member may be rotatably moved between; (a) a first position wherein the beveled tip of said diverter member is substantially removed from said flexible catheter; and (b) a second position wherein the beveled tip of said diverter member extends at least partially into said flexible catheter such that said guidewire being advanced in a proximal direction through a lumen of said flexible catheter will be received into the hollow lumen of said diverter member and thereby diverted out of said guidewire exit aperture through which said diverter member is inserted.
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43. An ultrasonic device for removing obstructions from blood vessels, said device comprising:
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a guidewire; an elongate flexible catheter having a proximal end, a distal end, and at least one lumen extending longitudinally therethrough; an ultrasound transmission member extending longitudinally through a lumen of the flexible catheter, said ultrasonic transmission member having a distal end and a proximal end; a distal head formed on the distal end of said ultrasound transmission member and extending at least partially beyond the distal end of the catheter; a guidewire passage aperture extending through said distal head in axial alignment with the first lumen of said catheter, wherein said guidewire may be passed through said aperture and through a second lumen of said catheter; a guidewire exit aperture formed at the proximal end of said flexible catheter to permit passage of a guidewire out of said flexible catheter; a guidewire diverter member insertable into said flexible catheter adjacent said guidewire exit aperture to divert one end of said guidewire out of said guidewire exit aperture, wherein said guidewire diverter member comprises a tubular member having a hollow lumen extending therethrough and a beveled tip, said tubular member insertable into said guidewire exit aperture, wherein said diverter member comprises a tubular body having a hollow lumen extending therethrough; and means positioned on said diverter member for locking said guidewire in a substantially fixed position relative to said catheter, wherein said locking means comprises; gripping apparatus comprising a hollow portion through which said tubular body passes, said hollow portion having a slot extending therethrough, and said gripping apparatus having ribs provided on an outer surface; and a U-shaped slidable locking member having inner surfaces and a central tongue insertable into said slot, said tongue provided with an aperture at a central portion thereat, and a plurality of sets of grooves formed on the inner surfaces of the slidable locking member; said aperture of said tongue aligned with said hollow lumen of said tubular body for said guidewire to extend therethrough, said ribs adapted to be seated within at least one set of said plurality of sets of grooves.
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Specification