Rotatable catheter assembly
First Claim
Patent Images
1. A catheter assembly comprising:
- an outer catheter shaft, the outer catheter shaft having a length and an outer surface;
an inner catheter shaft, the inner catheter shaft having a length and an outer surface;
a balloon, the balloon comprising a proximal balloon waist, a distal balloon waist and a body portion there between, a proximal balloon cone extending between the proximal balloon waist and the balloon body, a distal balloon cone extending between the distal balloon waist and the balloon body;
the balloon having an expanded state and a unexpanded state, in the expanded state the body portion having an expanded diameter and in the unexpanded state the body portion having an unexpanded diameter that is less than the expanded diameter; and
a proximal collar and a distal collar, the proximal collar fixedly engaged to the outer catheter shaft and the distal collar fixedly engaged to the inner catheter shaft, each collar having a body portion and at least one lip portion, the at least one lip portion extending radially outward from the body portion, each collar having a nonactivated state and an activated state, in the nonactivated state the balloon being rotatable around the proximal collar and the distal collar, in the nonactivated state each lip portion constructed and arranged to abut a portion of the balloon to prevent the balloon from moving longitudinally relative thereto, in the activated state the body portion of the proximal collar being expanded to sealingly engage at least a portion of the proximal balloon waist and the distal collar being expanded to sealingly engage at least a portion of the distal balloon waist.
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Accused Products
Abstract
A catheter assembly comprises a catheter shaft, a balloon and a pair of collars engaged to the catheter shaft. Each collar has a body portion and at least one lip portion extending radially outward from the body portion. Each collar has a nonactivated state and an activated state, wherein in the nonactivated state the balloon is rotatable about the collars and each lip portion is constructed and arranged to abut a portion of the balloon to prevent the balloon from moving longitudinally relative thereto. In the activated state the body portion of each collar is sealingly engaged to at least a portion of the balloon.
248 Citations
30 Claims
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1. A catheter assembly comprising:
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an outer catheter shaft, the outer catheter shaft having a length and an outer surface; an inner catheter shaft, the inner catheter shaft having a length and an outer surface; a balloon, the balloon comprising a proximal balloon waist, a distal balloon waist and a body portion there between, a proximal balloon cone extending between the proximal balloon waist and the balloon body, a distal balloon cone extending between the distal balloon waist and the balloon body;
the balloon having an expanded state and a unexpanded state, in the expanded state the body portion having an expanded diameter and in the unexpanded state the body portion having an unexpanded diameter that is less than the expanded diameter; anda proximal collar and a distal collar, the proximal collar fixedly engaged to the outer catheter shaft and the distal collar fixedly engaged to the inner catheter shaft, each collar having a body portion and at least one lip portion, the at least one lip portion extending radially outward from the body portion, each collar having a nonactivated state and an activated state, in the nonactivated state the balloon being rotatable around the proximal collar and the distal collar, in the nonactivated state each lip portion constructed and arranged to abut a portion of the balloon to prevent the balloon from moving longitudinally relative thereto, in the activated state the body portion of the proximal collar being expanded to sealingly engage at least a portion of the proximal balloon waist and the distal collar being expanded to sealingly engage at least a portion of the distal balloon waist. - 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)
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26. A catheter assembly comprising:
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a catheter shaft, the catheter shaft having a length and an outer surface; a balloon including a proximal balloon waist, a distal balloon waist, and a body portion therebetween, the body portion of the balloon having an expanded state and an unexpanded state, wherein the body portion has a first diameter in the expanded state and a second diameter in the unexpanded state, the second diameter less than the first diameter; and one or more collars disposed radially between the outer surface of the catheter shaft and at least one of the proximal balloon waist and the distal balloon waist of the balloon, the one or more collars having a body portion and at least one lip portion, the at least one lip portion extending radially outward from the body portion, in the nonactivated state the at least one lip portion constructed and arranged to abut a portion of the at least one of the proximal balloon waist and the distal balloon waist of the balloon to prevent the balloon from moving longitudinally relative to the catheter shaft, the one or more collars including an electroactive polymer material having a contracted state and an expanded state, wherein the balloon is rotatable relative to the catheter shaft when the electroactive polymer material of the one or more collars is in the contracted state and the balloon is sealingly engaged to the catheter shaft when the electroactive polymer material of the one or more collars is in the expanded state. - View Dependent Claims (27, 28, 29)
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30. A catheter assembly comprising:
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a catheter shaft including a proximal end, a distal end, and a lumen extending at least partially therebetween; a balloon disposed about at least a portion of the catheter shaft adjacent to the distal end, wherein the balloon includes a proximal waist and a distal waist; and one or more electroactive polymers disposed radially between the catheter shaft and at least one of the proximal waist and the distal waist of the balloon, wherein the one or more electroactive polymers are fixed to the catheter shaft and configured to expand when activated by an electrical current, the one or more electroactive polymers having at least one lip portion extending radially outward to abut a portion of the proximal waist and/or the distal waist of the balloon to prevent the balloon from moving longitudinally relative to the catheter shaft; wherein the balloon is rotatable relative to the catheter shaft when the one or more electroactive polymers are nonactivated and the balloon is sealingly engaged to the catheter shaft when the one or more electroactive polymers are activated.
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Specification