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US 11,766,264 B2Granted
Apparatus and method for deploying stent across adjacent tissue layers
AssigneeBoston Scientific Scimed, Inc.
InventorsHoang Phan, John Lunsford, Kenneth F. Binmoeller
Life of this patent
Estimating the term…
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.
Claims16
A device, comprising:
- a shaft configured to support a self-expanding drainage device, the shaft comprising a distal end;
- a tissue penetrating member coaxial with the shaft, the tissue penetrating member comprising an electrosurgical tip having a distalmost end that is coplanar with the shaft distal end;
- a holding component coaxial with the shaft, the holding component configured to deploy the self-expanding drainage device from the shaft, wherein the holding component comprises a retractable sheath slidably disposed over the shaft;
- and
- a securing mechanism configured to maintain a plurality of predetermined positions of the holding component relative to the shaft, the securing mechanism comprising:
- a first lock configured to maintain at least a first one of the plurality of predetermined positions between the holding component and the shaft and to prevent movement of the retractable sheath proximally with respect to the shaft, and
- a second lock configured to maintain at least a second one of the plurality of predetermined positions between the holding component and the shaft and to prevent movement of the retractable sheath proximally with respect to the shaft;
- wherein a guidewire is receivable within a lumen of the tissue penetrating member and a lumen of the shaft.
5 more elements
A medical device, comprising:
- a shaft, wherein a distal end of the shaft includes an electrosurgical component that is coaxial with the shaft configured to create or enlarge an opening between first and second body sites, wherein the electrosurgical component comprises a distalmost tip that is coplanar with the shaft distal end;
- a self-expanding stent carried on the shaft proximal to and coaxial with the electrosurgical component;
- a sheath coaxial with the shaft, movably disposed over the shaft, and constraining the self-expanding stent on the shaft;
- and
- a securing mechanism comprising a first lock and a second lock,
- wherein the first lock is configured to maintain the sheath relative to the shaft such that the self-expanding stent is constrained;
- wherein, responsive to unlocking the first lock, the sheath is movable a first predetermined distance proximal relative to the shaft such that a portion of the self-expanding stent becomes unconstrained to deploy a distal flange of the self-expanding stent;
- wherein the second lock is configured to maintain the position of the sheath relative to the shaft at the first predetermined distance;
- and
- wherein, responsive to unlocking the second lock, the sheath is movable to a second predetermined distance proximal relative to the shaft such that a remaining portion of the self-expanding stent becomes unconstrained to deploy a proximal flange of the self-expanding stent.
7 more elements
A device, comprising:
- a shaft having a distal end, a proximal end and a lumen extending therebetween;
- an electrosurgical component coaxially disposed on the distal end of the shaft and configured to create or enlarge an opening between adjacent tissues of a first body lumen and a second body, wherein the electrosurgical component comprises a distalmost tip that is coplanar with the shaft distal end;
- a retractable sheath slidably and coaxially disposed over the shaft;
- a securing mechanism comprising a first lock and a second lock;
- and
- a self-expanding drainage device constrained between the shaft and the retractable sheath;
- wherein the retractable sheath is configured to be proximally retracted to a first predetermined position relative to the shaft to deploy a distal flange of the self-expanding drainage device responsive to the first lock being unlocked;
- wherein the first lock is configured to maintain the position of the sheath relative to the shaft at the first predetermined position;
- wherein the retractable sheath is configured to be proximally retracted to a second position relative to the shaft to deploy a proximal flange of the self-expanding drainage device responsive to the second lock being unlocked;
- and
- wherein the second lock is configured to maintain the position of the sheath relative to the shaft at the second position.
8 more elements
Dependencies are inferred from the claim text.