Intravascular imaging apparatus and methods for use and manufacture
First Claim
1. A drive cable for use in an imaging device for ultrasonic imaging of small vessels of a patient'"'"'s body, the imaging device having an elongate member with a distal end positionable within a small vessel of the patient'"'"'s body and a proximal end positionable outside the body, a transducer located at a distal end of the elongate member and operable to scan the vessel walls, the drive cable being electrically connected to a proximal end of the transducer for conducting pulses to and from the transducer, a signal processor operable to send and receive electrical signals to and from said transducer, the drive cable being electrically connected to the signal processor for conducting pulses to and from the signal processor, and the drive cable further comprising:
- a rotatable outer layered coil assembly;
a core wire located inside of said layered coil assembly and connected thereto for rotation therewith andwherein said outer layered coil assembly further comprises a plurality of coaxial coil layers around said core wirewherein said plurality of coaxial coil layers comprises three coaxial coil layers around said core wire.
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Accused Products
Abstract
A device for ultrasonic imaging, and methods for the use an manufacture thereof, particularly of small coronary vessels. The device comprises an elongate member with a distal end that can be positioned within a small vessel of a patient'"'"'s body while a proximal end is located outside the body, a transducer located at a distal end of the elongate member and operable to scan the distal coronary vessels with ultrasonic pulses, and a signal processor connected to a proximal end of the elongate member and to the transducer for generating and receiving pulses to and from the transducer. A motor may be also connected to the proximal end of the elongate member for rotating the transducer.
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Citations
19 Claims
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1. A drive cable for use in an imaging device for ultrasonic imaging of small vessels of a patient'"'"'s body, the imaging device having an elongate member with a distal end positionable within a small vessel of the patient'"'"'s body and a proximal end positionable outside the body, a transducer located at a distal end of the elongate member and operable to scan the vessel walls, the drive cable being electrically connected to a proximal end of the transducer for conducting pulses to and from the transducer, a signal processor operable to send and receive electrical signals to and from said transducer, the drive cable being electrically connected to the signal processor for conducting pulses to and from the signal processor, and the drive cable further comprising:
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a rotatable outer layered coil assembly; a core wire located inside of said layered coil assembly and connected thereto for rotation therewith and wherein said outer layered coil assembly further comprises a plurality of coaxial coil layers around said core wire wherein said plurality of coaxial coil layers comprises three coaxial coil layers around said core wire. - View Dependent Claims (3)
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2. A drive cable for use in an imaging device for ultrasonic imaging of small vessels of a patient'"'"'s body, the imaging device having an elongate member with a distal end positionable within a small vessel of the patient'"'"'s body and a proximal end positionable outside the body, a transducer located at a distal end of the elongate member and operable to scan the vessel walls, the drive cable being electrically connected to a proximal end of the transducer for conducting pulses to and from the transducer, a signal processor operable to send and receive electrical signals to and from said transducer, the drive cable being electrically connected to the signal processor for conducting pulses to and from the signal processor, and the drive cable further comprising:
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a rotatable outer layered coil assembly; a core wire located inside of said layered coil assembly and connected thereto for rotation therewith; and wherein said outer layered coil assembly further comprises a plurality of coaxial coil layers around said core wire wherein said outer layered coil assembly further is comprised of at least one layer of flat wire.
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4. A drive cable for use in an imaging device for ultrasonic imaging of small vessels of a patient'"'"'s body, the imaging device having an elongate member with a distal end positionable within a small vessel of the patient'"'"'s body and a proximal end positionable outside the body, a transducer located at a distal end of the elongate member and operable to scan the vessel walls, the drive cable being electrically connected to a proximal end of the transducer for conducting pulses to and from the transducer, a signal processor operable to send and receive electrical signals to and from said transducer, the drive cable being electrically connected to the signal processor for conducting pulses to and from the signal processor, and the drive cable further comprising:
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a rotatable outer layered coil assembly; a core wire located inside of said layered coil assembly and connected thereto for rotation therewith; and wherein said outer layered coil assembly further comprises a plurality of coaxial coil layers around said core wire; wherein each layer of said plurality of coil layers is comprised of multiple individual strands of wires.
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5. A drive cable for use in an imaging device for ultrasonic imaging of small vessels of a patient'"'"'s body, the imaging device having an elongate member with a distal end positionable within a small vessel of the patient'"'"'s body and a proximal end positionable outside the body, a transducer located at a distal end of the elongate member and operable to scan the vessel walls, the drive cable being electrically connected to a proximal end of the transducer for conducting pulses to and from the transducer, a signal processor operable to send and receive electrical signals to and from said transducer, the drive cable being electrically connected to the signal processor for conducting pulses to and from the signal processor, and the drive cable further comprising:
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a rotatable outer layered coil assembly; a core wire located inside of said layered coil assembly and connected thereto for rotation therewith; and wherein said outer layered coil assembly further comprises a plurality of coaxial coil layers around said core wire; wherein each layer of said plurality of individual layers is wound in an opposite helical direction from the layer immediately adjacent thereto.
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6. An intravascular drive cable imaging device for ultrasonic imaging of small vessels of a patient'"'"'s body and a proximal end positionable outside the body, a transducer located at a distal end of the imaging device and operable to scan the vessel walls, the drive cable being electrically connected to a proximal end of the transducer for conducting pulses to and from the transducer, a signal processor operable to send and receive electrical signals to and from said transducer, the drive cable being operatively adapted for conducting pulses to and from the signal processor, and the drive cable further comprising:
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a rotatable outer layered coil assembly; and
coil assembly and connected thereto for rotation therewith;wherein said core wire comprises a coaxial cable having an internal conductor and a external conductor separated from said internal conductor by an insulator. - View Dependent Claims (7, 8, 9)
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10. In an imaging device for ultrasonic imaging of small vessels of a patient'"'"'s body, the imaging device having an elongate member with a distal end positionable within an intravascular vessel while a proximal end is located outside the body, a transducer located at a distal end of the elongate member and operable to scan the vessel with ultrasonic pulses, a distal drive cable connected at a distal end thereof to the transducer and operable to transmit electrical signals to and from said transducer, a proximal drive cable, a signal processor connected to a proximal end Of the proximal drive cable for generating and receiving pulses to and from the transducer, a motor connected to the proximal end of the proximal drive cable to rotate the transducer, and a coupling member for connecting the distal drive cable and the proximal drive cable, the coupling member further comprising:
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a distal section connected to the elongate member and to the proximal end of the distal drive cable and adapted to allow rotational movement between the elongate member and the distal drive cable, and a proximal section releasably connectable to the distal section, said proximal section connected the proximal drive cable; a sleeve portion connected to the elongate member, and a first rotating coaxial member located inside said sleeve portion connected to the distal drive cable. - View Dependent Claims (11, 12, 13)
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14. A data processing architecture for use in an imaging device for ultrasonic imaging of a small vessel of a patient'"'"'s body, the imaging device having an elongate member with a distal end positionable within the small vessel and a proximal end positionable outside the body, a transducer located at a distal end of the elongate member and operable to scan the vessel walls, a drive cable connected to the transducer and operable to transmit electrical signal to and from the transducer, and a signal processor connected to a proximal end of the drive cable for generating and receiving pulses to and from the transducer, the data processing architecture comprising:
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a raw data pipeline adapted to process polar coordinate data derived from the signals produced by the transducer; a means responsive to the raw data pipeline and a look up table for converting data from the raw data pipeline to rectangular coordinate data and outputting rectangular coordinate data; and a graphics data pipeline responsive to the output of the converting means. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification