Multi-lumen endoscopic catheter
DCFirst Claim
1. A method of obtaining access to a duct of the biliary tree using a catheter having at least three lumens, a first of said at least three lumens being configured for receiving a guidewire therethrough, a second of said lumens being configured for injection of fluid through the lumen and a third of said lumens being configured for receiving an electrosurgical cutting instrument, the method comprising:
- threading a guidewire and catheter through an endoscope and into said duct to a desired position;
actuating the electrosurgical cutting instrument received in the third lumen to cut tissue in said duct; and
injecting a fluid through the second lumen.
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Accused Products
Abstract
Multi-lumen catheters are intended for advancement through the accessory channel on endoscope into a body passage into the gastrointestinal system. The catheters have two or more independent lumens extending continuously to ports at the distal tip for injection of a contrast medium simultaneously with a guide wire for ERCP procedures and for passage of accessories such as visualization devices, polypectomy snares, cytology brushes, papillotomes and stone baskets for catheterization, diagnosis and treatment within the biliary tract. Use of balloons for maintaining a catheter in fixed position in the biliary tract and for dilatation is also disclosed. The catheters employed are extrusions of a resin comprised of nylon and PEBA. The catheters may also be extruded from polyurethane. Multi-lumen catheters having a reduced diameter distal tip portion on which a dilatation balloon is located are also disclosed. The reduced diameter distal tip portion may serve as a platform for support of a stent.
250 Citations
22 Claims
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1. A method of obtaining access to a duct of the biliary tree using a catheter having at least three lumens, a first of said at least three lumens being configured for receiving a guidewire therethrough, a second of said lumens being configured for injection of fluid through the lumen and a third of said lumens being configured for receiving an electrosurgical cutting instrument, the method comprising:
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threading a guidewire and catheter through an endoscope and into said duct to a desired position;
actuating the electrosurgical cutting instrument received in the third lumen to cut tissue in said duct; and
injecting a fluid through the second lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for obtaining access to a duct or the biliary tree, the method comprising:
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selecting a catheter having at least three lumens;
disposing a guidewire in a first lumen of the at least three lumens and placing the guidewire and catheter through an endoscope;
injecting fluid through a second lumen of the at least three lumens; and
cutting tissue of the biliary tree with a cutting instrument disposed in a third lumen of the at least three lumens. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A multi-lumen biliary catheter comprising:
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an elongate catheter body having first, second and third lumens, the first lumen being configured for passing a guidewire therethrough, and the third lumen having an electrosurgical cutting instrument disposed therein; and
a guidewire, the first lumen configured to pass the guidewire through an exit port at the distal tip of the catheter body, the guidewire configured to be positioned to a desired location directly within a patient, the catheter body advanceable over the guidewire in order to position the catheter body to the desired location; and
wherein the second lumen is configured to allow for the passage of contrast medium while the guidewire is positioned in the first lumen. - View Dependent Claims (19, 20, 21, 22)
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Specification