Method and apparatus for electrosurgically obtaining access to t

Details Method and apparatus for electrosurgically obtaining access to t Method and apparatus for electrosurgically obtaining access to t

1994-11-01

1996-07-16

McDermott, Corrine M.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604280, 606 45, 606108, A61M 3100

Patent

active

055362486

ABSTRACT:
A method of electrosurgically obtaining access to the biliary tree of a patient and visualizing a duct thereof using a catheter having a least a first lumen and a second lumen. The first lumen has a needle-knife disposed therein, which knife may be moved between a deployed position and a sheathed position and is in electrical communication with a power source. The method includes the steps of (1) inserting the catheter through an endoscope and into the duodenum of a patient proximal to the entrance to the common bile duct, (2) deploying the needle-knife, (3) manipulating the needle-knife and applying current thereto to incise tissue proximal to the entrance to the common bile duct, (4) withdrawing the needle-knife into the sheathed position, (5) advancing the catheter into the common bile duct to a desired location within said duct; and (6) infusing a contrast medium through a second lumen of the catheter to visualize the common bile duct through the use of the contrast medium while the needle-knife remains in the first lumen of the catheter.

REFERENCES:
patent: 4832023 (1989-05-01), Murphy-Chutorian et al.
patent: 5026366 (1991-06-01), Leckrone
patent: 5026377 (1991-06-01), Burton et al.
patent: 5241970 (1993-09-01), Johlin, Jr. et al.
patent: 5334143 (1994-08-01), Carroll
patent: 5437659 (1995-08-01), Leckrone

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