Apparatus and method for deploying stent across adjacent tissue layers
First Claim
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1. A method for delivering a stent from a first body lumen to a second body lumen through apposed walls of said lumens, said method comprising:
- positioning an endoscope in the first body lumen adjacent to a target site on the wall of the first body lumen, which is a luminal wall;
advancing a catheter assembly in a working channel of the endoscope to locate a distal region of the catheter assembly at the target site;
advancing a portion of the catheter assembly through a hole in the apposed walls at the target site, the catheter assembly including a stent deployment sub-assembly;
expanding a distal flange on the stent in the second body lumen by retracting a sheath;
stopping the retraction of the sheath at a pre-determined distance that is less than a length of the stent;
drawing proximally on the stent deployment sub-assembly to pull the distal flange against the wall of the second body lumen to maintain the walls in apposition; and
after drawing proximally, expanding a proximal flange on the stent in the first body lumen to complete delivery by further retracting the sheath.
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Abstract
Transluminal access system includes a stent delivery catheter having a handle control mechanism. The catheter comprises a number of components for establishing an initial penetration between adjacent body lumens and subsequently implanting a stent or other luminal anchor therebetween. Manipulation of the stent components is achieved using control mechanisms on the handle while the handle is attached to an endoscope which provides access to a first body lumen.
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Citations
24 Claims
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1. A method for delivering a stent from a first body lumen to a second body lumen through apposed walls of said lumens, said method comprising:
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positioning an endoscope in the first body lumen adjacent to a target site on the wall of the first body lumen, which is a luminal wall; advancing a catheter assembly in a working channel of the endoscope to locate a distal region of the catheter assembly at the target site; advancing a portion of the catheter assembly through a hole in the apposed walls at the target site, the catheter assembly including a stent deployment sub-assembly; expanding a distal flange on the stent in the second body lumen by retracting a sheath; stopping the retraction of the sheath at a pre-determined distance that is less than a length of the stent; drawing proximally on the stent deployment sub-assembly to pull the distal flange against the wall of the second body lumen to maintain the walls in apposition; and after drawing proximally, expanding a proximal flange on the stent in the first body lumen to complete delivery by further retracting the sheath. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification