Catheter having ultrasonic device
First Claim
1. A catheter comprising:
- an elongated catheter tube having proximal and distal ends and an inner lumen extending the length of the tube;
an ultrasonic transducer mounted at the distal end of the catheter tube, the transducer having a wall with inner and outer surfaces, the transducer having a plurality of sensor holes formed completely through the wall of the transducer;
a temperature sensing device disposed within each sensor hole in the wall of the transducer; and
an adhesive disposed over each sensor hole on the outer surface of the transducer to seal the hole and the respective temperature sensing device thereby sealing the temperature sensing device from contact with fluids exterior to the transducer.
3 Assignments
0 Petitions
Accused Products
Abstract
A catheter includes a piezoelectric transducer mounted to the distal end of a catheter. In one embodiment, the piezoelectric transducer has the shape of a cylinder and in another embodiment, a convex shape with a mounting flange. In the cylindrical shape, a plurality of surface mounted temperature sensors are disposed within the piezoelectric transducer. The sensors are electrically insulated and a sealing technique prevents the leakage of body fluids from penetrating the interior of the catheter through the sensor bores. The cylindrical transducer is supported on mounting members so that it is accurately mounted and sealed while at the same time, the material used does not significantly dampen the transducer. The convex shape includes a temperature sensor at its tip.
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Citations
24 Claims
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1. A catheter comprising:
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an elongated catheter tube having proximal and distal ends and an inner lumen extending the length of the tube; an ultrasonic transducer mounted at the distal end of the catheter tube, the transducer having a wall with inner and outer surfaces, the transducer having a plurality of sensor holes formed completely through the wall of the transducer; a temperature sensing device disposed within each sensor hole in the wall of the transducer; and an adhesive disposed over each sensor hole on the outer surface of the transducer to seal the hole and the respective temperature sensing device thereby sealing the temperature sensing device from contact with fluids exterior to the transducer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A catheter comprising:
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an elongated catheter tube having proximal and distal ends and an inner lumen extending the length of the tube; a hollow, cylindrical piezoelectric transducer mounted at the distal end of the catheter tube, the transducer having a wall and inner and outer surfaces; an internal mounting member; one or more sensor holes formed completely through the wall of the transducer; a temperature sensing device disposed within one or more of the sensor holes in the wall of the transducer; and wherein the cylindrical ultrasonic transducer is mounted to the internal mounting member by an elastomeric member that positions the transducer properly in relation to the catheter and isolates the transducer mechanically from the catheter so that transducer vibrations are not significantly damped. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A catheter comprising:
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an elongated catheter tube having proximal and distal ends and an inner lumen extending the length of the tube; a mounting member disposed in the distal end; and a hollow, piezoelectric transducer having a convex shape with an integral mounting flange, the transducer having a wall and inner and outer surfaces; wherein the integral mounting flange of the transducer is mounted at the distal end of the catheter tube on the mounting member distal to the catheter tube so that the transducer forms the distal tip of the catheter. - View Dependent Claims (18, 19, 20)
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21. A catheter comprising:
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an elongated catheter tube having proximal and distal ends and an internal mounting member at the distal end of the tube; a hollow, cylindrical piezoelectric transducer mounted axially around the internal mounting member of the catheter tube, the transducer having a wall with inner and outer surfaces; an elastomeric member positioned between the internal mounting member of the catheter tube and the inner surface of the wall of the transducer, said elastomeric member positioning the transducer properly in relation to the catheter and isolating the transducer mechanically from the catheter so that transducer vibrations are not significantly damped. - View Dependent Claims (22, 23, 24)
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Specification