Multichannel balloon catheter for delivering fluid
First Claim
1. An inflatable medical device for delivering fluid internally to a patient comprising:
- a) a catheter comprising an external wall and multiple lumens disposed therein, at least one of the lumens being a fluid delivery lumen communicating with a fluid delivery port on the external wall of the catheter;
b) a hollow, inflatable balloon having at least one fluid transmitting conduit,1) the fluid transmitting conduit extending from a proximal opening for receiving fluid to at least one external outlet on balloon,2) the fluid transmitting conduit having an inner wall and an outer wall, the inner wall extending axially beyond the proximal terminus of the outer wall to form an inner extension for attaching the inner fluid transmitting conduit wall to the external wall of the catheter; and
c) an outer collar attached at its distal end to the outer wall of the balloon'"'"'s fluid transmitting and at its proximal end to the external wall of the catheter at a point proximal to the fluid delivery port,whereby fluid is conveyed from the catheter'"'"'s fluid delivery port to the fluid transmitting conduit of the balloon through a closed path that is formed between the outer collar and the outer wall of the catheter.
1 Assignment
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Accused Products
Abstract
An inflatable medical device for delivering fluid internally to a patient comprising a catheter having a fluid delivery lumen communicating between a fluid entry port at its proximal end and a fluid delivery port on an external wall of the catheter and a hollow, inflatable balloon having at least one fluid transmitting conduit disposed between inner and outer balloon walls. The fluid transmitting conduit receives fluid from the fluid delivery port of the catheter and is connected to at least one outlet on the outer balloon wall. The inner balloon wall extends axially beyond the proximal terminus of the outer balloon wall to form an inner sleeve for attaching the inner balloon wall to the catheter. An outer collar is attached at its distal end to the outer balloon wall and at its proximal end to the catheter at a point proximal to the fluid delivery port. The outer collar forms a conduit between the fluid delivery port and the proximal opening of the fluid transmitting conduit of the balloon. The diameter of the outer collar decreases gradually, or in at least one discrete step, from an enlarged area to a proximal catheter attachment area.
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Citations
16 Claims
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1. An inflatable medical device for delivering fluid internally to a patient comprising:
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a) a catheter comprising an external wall and multiple lumens disposed therein, at least one of the lumens being a fluid delivery lumen communicating with a fluid delivery port on the external wall of the catheter; b) a hollow, inflatable balloon having at least one fluid transmitting conduit, 1) the fluid transmitting conduit extending from a proximal opening for receiving fluid to at least one external outlet on balloon, 2) the fluid transmitting conduit having an inner wall and an outer wall, the inner wall extending axially beyond the proximal terminus of the outer wall to form an inner extension for attaching the inner fluid transmitting conduit wall to the external wall of the catheter; and c) an outer collar attached at its distal end to the outer wall of the balloon'"'"'s fluid transmitting and at its proximal end to the external wall of the catheter at a point proximal to the fluid delivery port, whereby fluid is conveyed from the catheter'"'"'s fluid delivery port to the fluid transmitting conduit of the balloon through a closed path that is formed between the outer collar and the outer wall of the catheter. - View Dependent Claims (2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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5. An inflatable medical device for delivering fluid internally to a patient comprising:
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(a) a catheter comprising an external wall and multiple lumens disposed therein, at least one of the lumens being a fluid delivery lumen communicating with a fluid delivery port on the external catheter wall; (b) a hollow, inflatable balloon comprising inner and outer balloon walls and having at least one fluid transmitting conduit disposed between the inner and outer balloon walls, the fluid transmitting conduit comprising a proximal opening for receiving fluid from the fluid delivery port of the catheter and the fluid transmitting conduit being connected to at least one outlet on the outer balloon wall, the balloon comprising an inner sleeve for attaching the inner balloon wall to the catheter; and (c) an outer collar attached at its distal end to the outer balloon wall and at its proximal end to the catheter at a point proximal to the fluid delivery port, the outer collar thereby forming a conduit between the fluid delivery port and the proximal opening of the fluid transmitting conduit of the balloon, the outer collar having a distal balloon attachment area sized to surround and attach to the outer balloon wall and a radially enlarged area immediately proximal to the balloon attachment area, the enlarged area having a diameter larger than the diameter of the balloon attachment area.
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15. A collar for connecting a catheter comprising a fluid delivery lumen to a balloon that comprises fluid transmitting channels, the collar comprising:
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(a) a distal balloon attachment area sized to surround and attach to the outer balloon wall; and (b) a radially enlarged area immediately proximal to the balloon attachment area, the enlarged area having a diameter larger than the diameter of the balloon attachment area.
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16. A balloon for connection to a catheter to form an inflatable medical device for delivering fluid internally to a patient, the balloon comprising at least one fluid transmitting conduit,the fluid transmitting conduit extending from a proximal opening for receiving fluid to at least one external outlet on balloon,the fluid transmitting conduit having an inner wall and an outer wall, the inner wall extending axially beyond the proximal terminus of the outer wall to form an inner extension for attaching the inner wall to the external wall of the catheter.
Specification