Method and device for sensing and mapping temperature profile of a hollow body organ
First Claim
1. A device for sensing a temperature profile of a hollow body organ, comprising:
- a guidewire having a tubular helix structure continuous along an entire length of the guidewire, and sized for intravascular insertion and adapted to be disposed in a relaxed configuration externally of a catheter where a distal tip of the guidewire is laterally displaced relative to a longitudinal axis of the guidewire, and in a contracted configuration internally of the catheter; and
a temperature sensor connected to the distal tip of the guidewire and moveable therewith, the temperature sensor being adapted to be displaced laterally with the guidewire when in the relaxed configuration, wherein the temperature sensor is further adapted to be rotated about the longitudinal axis via the guidewire.
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Abstract
A method and device for sensing the temperature profile of a hollow body organ includes a catheter and a hollow guidewire carrying a thermal sensor. The guidewire is configured to displace the thermal sensor radially relative to the catheter when unconstrained and can be rotated about the longitudinal axis of the catheter. When constrained within the catheter, the guidewire can be advanced to a region of interest in hollow body organ. The catheter can be withdrawn, leaving the guidewire in place in an expanded configuration wherein the thermal sensor contacts the inner wall of the hollow body organ. The guidewire is moveable to sense the temperature at multiple locations. The thermal sensor can be replaced with an electrode for sensing the impedance profile of the hollow body organ.
297 Citations
41 Claims
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1. A device for sensing a temperature profile of a hollow body organ, comprising:
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a guidewire having a tubular helix structure continuous along an entire length of the guidewire, and sized for intravascular insertion and adapted to be disposed in a relaxed configuration externally of a catheter where a distal tip of the guidewire is laterally displaced relative to a longitudinal axis of the guidewire, and in a contracted configuration internally of the catheter; and a temperature sensor connected to the distal tip of the guidewire and moveable therewith, the temperature sensor being adapted to be displaced laterally with the guidewire when in the relaxed configuration, wherein the temperature sensor is further adapted to be rotated about the longitudinal axis via the guidewire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A device for sensing an impedance profile of a body organ, comprising:
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a catheter having a longitudinal axis; a guidewire having a tubular helix structure continuous along an entire length of the guidewire, and sized for intravascular insertion and being adapted to be disposed in a relaxed configuration externally of the catheter where a distal tip of the guidewire is laterally displaced relative to a longitudinal axis of the guidewire, and in a contracted configuration internally of the catheter; and an electrode connected to the distal tip of the guidewire and moveable therewith, the electrode being adapted to be displaced laterally with the guidewire when in the relaxed configuration, wherein the electrode is further adapted to be rotated about the longitudinal axis via the guidewire.
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20. A method for sensing a temperature profile of a hollow body organ, comprising the steps of:
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providing a guidewire having a tubular helix structure which is adapted to be disposed in a relaxed configuration externally of a catheter where a distal tip of the guidewire is laterally displaced relative to a longitudinal axis of the guidewire, and in a contracted configuration internally of the catheter; providing at least one thermal sensor connected to the distal tip of the guidewire and moveable therewith, the at least one thermal sensor being adapted to be displaced laterally with the guidewire when in the relaxed configuration; advancing the guidewire to a region of interest in a hollow body organ; relaxing the guidewire within the hollow body organ such that the at least one thermal sensor is displaced laterally in contact with the hollow body organ; and rotating the at least one thermal sensor about the longitudinal axis. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification