Multi-lumen biliary catheter with angled guidewire exit
AssigneeConmed Endoscopic Technologies, Inc.
InventorsIsac Raijman, John E Dimitriou
Life of this patent
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Abstract
A multi-lumen biliary catheter in which at least one of the lumens (14, 16) has a side opening port (24, 26) configured to guide a guidewire (32) out of that port at an angle to the longitudinal axis of the catheter. Radiopaque marker bands (34) having different lengths are placed on the distal end of the catheter adjacent the distal openings to facilitate fluoroscopic identification of the distal end orientation in the biliary tract.
Claims40
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A biliary catheter comprising:
- a shaft having at least two lumens wherein the shaft comprises:
- a first tubular member defining a first lumen having a first exit port at its distal end;
- a second tubular member defining a second lumen having a second exit port at its distal end;
- a third tubular member defining a third lumen having a third exit port, wherein
- the first tubular member is longer than the second tubular member and
- the second and third exit ports each have an axis that forms an angle with the longitudinal axis of the catheter shaft and at least the second exit port is configured to direct a guidewire out of the second exit port at an angle to the longitudinal axis of the shaft.
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A catheter comprising:
- a shaft having at least two lumens wherein the shaft comprises:
- a first tubular member defining a first lumen having a first exit port at its distal end;
- a second tubular member defining a second lumen having a second exit port at its distal end;
- a third tubular member defining a third lumen having a third exit port, wherein
- the first tubular member is longer than the second tubular member and
- the second and third exit ports each have an axis that forms an angle with the longitudinal axis of the catheter shaft and at least the second exit port is configured to direct a guidewire out of the second exit port at an angle to the longitudinal axis of the shaft.
The catheter of claim 22 wherein the block co-polymer is a grade or a blend of grades of PEBAX.
A method for accessing a pair of adjacent branches of a biliary tract comprising:
- providing a catheter comprising a shaft having at least two lumens including a first lumen and a second lumen;
- the first lumen having a first exit port at its distal end;
- the second lumen having a second exit port at its distal end, the second exit port having an axis that forms an angle with the longitudinal axis of the catheter wherein the second exit port is configured to direct a guidewire out of the second exit port at an angle to a longitudinal axis of the shaft;
- advancing a distal end of the catheter into the biliary tree;
- orienting one of the exit ports in registry with the entrance to a first of the pair of adjacent branches such that an axis of emergence of the exit port is in registry with the entry to the branch;
- and
- passing a guidewire through the lumen associated with the one of the exit ports in registry with the first branch and out of the one of the exit ports into the first branch.
Dependencies are inferred from the claim text.