BALLOON DESIGN TO REDUCE DISTAL LENGTH
First Claim
1. A medical device for thermally affecting tissue comprising:
- an elongate body;
a shaft disposed in the elongate body;
an inflatable element defining a chamber and having a proximal neck coupled to the catheter body and forming a proximal seal, the inflatable element also having a distal neck coupled to the shaft and forming a distal seal that is substantially coterminous with the shaft;
wherein the distal seal extends within the chamber of the inflatable body.
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Accused Products
Abstract
A device and system for thermally affecting tissue that includes a balloon catheter with a reduced distal length for ease of navigation and that also includes a balloon that is more resistant to bursting and delamination. The balloon may include a proximal neck generally attached to an elongate body and a distal neck generally attached to a shaft disposed within the elongate body. The distal neck is turned inward to extend within the balloon chamber and the proximal neck may either extend within the chamber or extend proximally away from the balloon chamber. Alternatively, the device may include an inner balloon and an outer balloon, the distal necks of both being turned inward and extending within the inner balloon chamber. The proximal necks may both also be turned inward to extend within the chamber or the proximal neck of the outer balloon may extend away from the balloon chamber.
37 Citations
20 Claims
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1. A medical device for thermally affecting tissue comprising:
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an elongate body; a shaft disposed in the elongate body; an inflatable element defining a chamber and having a proximal neck coupled to the catheter body and forming a proximal seal, the inflatable element also having a distal neck coupled to the shaft and forming a distal seal that is substantially coterminous with the shaft; wherein the distal seal extends within the chamber of the inflatable body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A medical device for thermally affecting tissue comprising:
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an elongate body; a shaft movably disposed in the elongate body; a first balloon disposed within a second balloon, each balloon defining a chamber and having a proximal adhesive junction and a distal adhesive junction, the second balloon when expanded defining a substantially continuous surface with the distal end of the shaft. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A medical device for thermally affecting tissue comprising:
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an elongate body defining a proximal portion, a distal portion, and a lumen therebetween; a shaft slidably disposed within the catheter body lumen, the shaft defining a proximal portion and a distal portion; a first balloon disposed within a second balloon, each balloon defining a chamber and having a proximal neck coupled to the distal portion of catheter body to form a proximal seal, and each balloon having a distal neck coupled to the distal portion of the shaft, the distal neck of the second balloon forming a distal seal that is substantially coterminous with the distal portion of the shaft; a fluid injection conduit disposed within the chamber of the first balloon; the first balloon being symmetrically positioned within the second balloon, with the proximal seal of the first balloon comprising an adhesive junction between the first balloon and the distal portion of the catheter body and extending within the chamber of the first balloon, and the proximal seal of the second balloon comprising an adhesive junction between the second balloon and the distal portion of the catheter body at a distance proximal to the proximal seal of the first balloon, the proximal seal of the second balloon extending externally to the chamber of the first balloon; the at least one distal seal of the first balloon comprising an adhesive junction between the first balloon and the distal portion of the shaft, the distal seal of the first balloon extending within the chamber of the first balloon; the second balloon defining a distal face when inflated, the shaft being coterminous with the distal face; and the proximal seal and the distal seal of the first balloon each defining a length of approximately 10% to 30% of the inflated balloon length.
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Specification