Medical treatment devices having adjustable length and/or diameter
First Claim
Patent Images
1. A medical treatment device having an adjustable treatment diameter, comprising:
- a catheter having an elongate flexible shaft with a proximal end and a distal end;
a first electrically resistive heating element disposed at and connected to the distal end of the elongate flexible shaft, a heated portion of the first electrically resistive heating element having a first outer diameter measured orthogonal to a longitudinal axis of the elongate flexible shaft;
first electrical contacts on the elongate flexible shaft; and
a second electrically resistive heating element, a heated portion of the second electrically resistive heating element having a second outer diameter measured orthogonal to the longitudinal axis of the elongate flexible shaft, the second outer diameter being larger than the first diameter, and being removeably connectable to the elongate flexible shaft to at least partially surround the heated portion of the first electrically resistive heating element, the second electrically resistive heating element having second electrical contacts removeably connectable to the first electrical contacts.
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Abstract
The present embodiments enable the length and/or diameter of the heating segment of a medical treatment device to be adjusted on the fly during a treatment procedure, without a need to interrupt the procedure, thus allowing a single catheter to be used at different locations in a hollow anatomical structure.
21 Citations
19 Claims
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1. A medical treatment device having an adjustable treatment diameter, comprising:
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a catheter having an elongate flexible shaft with a proximal end and a distal end; a first electrically resistive heating element disposed at and connected to the distal end of the elongate flexible shaft, a heated portion of the first electrically resistive heating element having a first outer diameter measured orthogonal to a longitudinal axis of the elongate flexible shaft; first electrical contacts on the elongate flexible shaft; and a second electrically resistive heating element, a heated portion of the second electrically resistive heating element having a second outer diameter measured orthogonal to the longitudinal axis of the elongate flexible shaft, the second outer diameter being larger than the first diameter, and being removeably connectable to the elongate flexible shaft to at least partially surround the heated portion of the first electrically resistive heating element, the second electrically resistive heating element having second electrical contacts removeably connectable to the first electrical contacts. - View Dependent Claims (2, 3, 4, 5)
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6. A medical treatment kit having an adjustable treatment diameter, comprising:
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a catheter having an elongate flexible shaft with a proximal end and a distal end; a first heating element disposed at and connected to the distal end of the elongate flexible shaft, a heated portion of the first heating element having a first outer diameter measured orthogonal to a longitudinal axis of the elongate flexible shaft; first electrical contacts on the elongate flexible shaft; and a second heating element having second electrical contacts removeably connectable to the first electrical contacts, a heated portion of the second heating element having a second outer diameter measured orthogonal to the longitudinal axis of the elongate flexible shaft that is greater than the first outer diameter, wherein, when the second electrical contacts are connected to the first electrical contacts the heated portion of the second heating element at least partially surrounds the heated portion of the first heating element. - View Dependent Claims (7, 8, 9, 10)
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11. A medical treatment system having an adjustable treatment diameter, comprising:
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a catheter having an elongate flexible shaft with a proximal end and a distal end; a first heating element disposed at and connected to the distal end of the elongate flexible shaft, a heated portion of the first heating element having a first outer diameter orthogonal to a longitudinal axis of the elongate flexible shaft; a second heating element removeably connectable to the distal end of the elongate flexible shaft over the first heating element, a heated portion of the second heating element having a second outer diameter orthogonal to the longitudinal axis of the elongate flexible shaft that is greater than the first outer diameter; and a power source, wherein the power source is configured to automatically detect whether the second heating element is connected to the distal end of the elongate flexible shaft and adjust an energy output to the second heating element to a desired energy output, wherein, when the second heating element is connected to the distal end of the elongate flexible shaft, the heated portion of the second heating element at least partially surrounds the heated element of the first heating element. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification