APPARATUS AND METHOD FOR DEPLOYING STENT ACROSS ADJACENT TISSUE LAYERS
First Claim
Patent Images
1. A method for delivering a stent from a first body lumen, through adjacent luminal walls, to a second body lumen, said method comprising:
- advancing an endoscope having a working channel through the first body lumen to a target site on a wall of the first lumen;
attaching a handle control mechanism to the endoscope so that the handle is immobilized relative to the endoscope;
advancing a stent deployment catheter assembly including a shaft, a self-expanding stent carrier on the shaft, and a sheath constraining the stent on the shaft relative to the handle and the endoscope and through a passage from the first body lumen, through the apposed walls at the target site, and into the second body lumen;
retracting the sheath relative to the endoscope, handle and shaft by a distance sufficient to release a distal portion of the stent for forming a distal flange;
pulling proximally on the stent deployment assembly to engage the distal flange against the wall of the second body lumen to draw the two luminal walls into closer apposition; and
further retracting the sheath relative to the endoscope, handle, and shaft to release the remaining portions of the stent within the passage, wherein a proximal flange expands against the wall of the first body lumen.
2 Assignments
0 Petitions
Accused Products
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.
-
Citations
30 Claims
-
1. A method for delivering a stent from a first body lumen, through adjacent luminal walls, to a second body lumen, said method comprising:
-
advancing an endoscope having a working channel through the first body lumen to a target site on a wall of the first lumen; attaching a handle control mechanism to the endoscope so that the handle is immobilized relative to the endoscope; advancing a stent deployment catheter assembly including a shaft, a self-expanding stent carrier on the shaft, and a sheath constraining the stent on the shaft relative to the handle and the endoscope and through a passage from the first body lumen, through the apposed walls at the target site, and into the second body lumen; retracting the sheath relative to the endoscope, handle and shaft by a distance sufficient to release a distal portion of the stent for forming a distal flange; pulling proximally on the stent deployment assembly to engage the distal flange against the wall of the second body lumen to draw the two luminal walls into closer apposition; and further retracting the sheath relative to the endoscope, handle, and shaft to release the remaining portions of the stent within the passage, wherein a proximal flange expands against the wall of the first body lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method for delivering a stent from a first body lumen through adjacent walls to a second body lumen, said method comprising:
-
positioning an endoscope in the first body lumen adjacent to a target site on 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; penetrating a needle carried by the catheter assembly through the apposed walls at the target site; deploying an anchor on a distal end of a tension wire in the second body lumen; drawing proximally on the tension wire to maintain the walls in close apposition; advancing a stent deployment sub-assembly which carries the stent over the needle while maintaining tension on the tension wire; expanding a distal flange on the stent in the second body lumen; 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 expanding a proximal flange on the stent in the first body lumen to complete delivery. - View Dependent Claims (12, 13, 14, 15, 16, 17)
-
-
18. Apparatus for delivering a self-expanding stent from a first body lumen, through adjacent luminal walls, to a second body lumen, said apparatus comprising:
-
a handle having a distal end, a proximal end, and a coupling member at the distal end which can be removably secured to an endoscope; a catheter operatively coupled to the handle and including a shaft, a self-expanding stent carried on the shaft, and a sheath coaxially received over the shaft and radially constraining the stent on the shaft; a catheter slide actuator on the handle and coupled to the catheter to advance and retract said catheter as a whole relative to the needle; and a collar on the handle and coupled to the catheter to advance and retract the sheath over the shaft and stent while the shaft remains stationary relative to the handle in order to release the self-expanding stent. - View Dependent Claims (19, 20, 21, 22, 23, 24)
-
-
25. A catheter for delivering a self-expanding stent through adjacent luminal walls, said catheter comprising:
-
a shaft having a distal end, a proximal end, and an axial passage therethrough; a needle slidably positioned in the axial passage of the shaft and having a tissue-penetrating distal tip that can be advanced distally beyond the distal end of the shaft and retracted proximally within the passage, said needle having an axial passage therethrough; a tension wire slidably positioned in the axial passage of the needle and having a deployable anchor at its distal end, wherein said anchor can be distally advanced beyond the distal tip of the needle and proximally retracted into the axial passage of the needle; a self-expanding stent carried coaxially over the shaft; and a retractable sheath disposed coaxially over the shaft and the stent so that the sheath maintains the stent in a radially constrained configuration and can be retracted to release the stent from constraint and allow the stent to deploy. - View Dependent Claims (26, 27, 28, 29, 30)
-
Specification