Apparatus for performing diagnostic and therapeutic modalities in the biliary tree
AssigneeSciMed Life Systems, Inc.
InventorsChristopher A. Rowland, Michael G. Vergano, Bryan P. Eddy, Peter B. Cotton
Life of this patent
Estimating the term…
Abstract
Catheter apparatus for performing diagnostic and therapeutic modalities in the biliary tree includes a catheter with multiple lumens. A first lumen is adapted to receive a guidewire and can serve as a transport lumen for contrast agent. A second lumen carries a cutting wire for performing a sphincterotomy. A third lumen can be used as an inflation lumen for a distally located balloon. Expansion of the balloon occludes a portion of the biliary tree and allows the catheter to sweep any gallstones through the sphincter of Oddi into the duodenum.
Claims30
A multi-lumen catheter for treatment of a patient, the catheter extending from a proximal end to a distal end and having a proximal portion, a distal portion, and a central axis, the catheter comprising:
- a first lumen, a second lumen, and a third lumen;
- wherein each lumen extends from the proximal end to the distal end generally in parallel and has an entry port at the proximal portion and an exit port at the distal portion;
- said first lumen having a first diameter that is larger than a diameter of either the second lumen or the third lumen;
- said first lumen having a first central axis that is radially offset from the central axis of the catheter;
- and
- wherein said catheter has a gradually reducing diameter in a direction from the proximal end to the distal end.
A multi-lumen catheter for treatment of a patient, the catheter extending from a proximal end to a distal end and having a proximal portion and a distal portion, the catheter comprising:
- a first lumen being adapted to receive a guiding device for guiding insertion of the catheter into a body cavity of the patient;
- a second lumen having an entry port at the proximal portion and an exit port at the distal portion, the second lumen including an expansible device at the exit port;
- a third lumen being adapted to receive an operating device for performing an operation on the patient;
- and
- wherein said catheter has a gradually reducing diameter in a direction from the proximal end to the distal end.
A method of removing an object from an internal passage of a patient, the method comprising the steps of:
- inserting a catheter into the passage, the catheter having a first lumen and a second lumen each extending therethrough from a distal end inserted within the patient to a proximal end to remain exterior the patient, the first lumen being adapted to receive a guiding device, and the second lumen being provided with an expansible device provided near the distal end thereof and an entry port provided near the proximal end thereof, said catheter having a gradually reducing diameter from a proximal end to a distal end;
- using the guiding device to position the catheter within the passage until the expansible device passes beyond the object to be removed;
- expanding the expansible device;
- and
- withdrawing the catheter from the patient while the expansible device is expanded to dislodge the object from the internal passage of the patient.
A multi-lumen catheter for treatment of a patient, the catheter extending from a proximal end to a distal end and having a proximal portion, a distal portion and a central axis, the catheter comprising:
- a first lumen, a second lumen and a third lumen;
- wherein each lumen extends from the proximal end to the distal end generally in parallel and has an entry port at the proximal portion and an exit port at the distal portion;
- said first lumen having a first diameter that is larger than a diameter of either the second or third lumen;
- said first lumen having a first central axis that is radially offset from the central axis of the catheter and where said first lumen is adapted to receive a guidewire;
- said third lumen is adapted to receive a cutting device for cutting a patient's internal tissue;
- and
- the catheter further comprises an actuator connectable to the cutting device at the proximal end of the catheter for actuating the cutting blade.
Dependencies are inferred from the claim text.