Abstract: A system for delivering a stent into a body lumen includes an inner tubular member configured to advance through an access site in a wall of a body lumen for delivering a stent into the body lumen and an electrode configured to create the access site in the wall of the body lumen. A tubular sleeve is disposed coaxially over the distal end portion of the inner tubular member and is configured to thermally insulate at least a portion of the inner tubular member.

Abstract: Methods, apparatuses, and systems are described for stent delivery and positioning for transluminal application. The method may include positioning the stent in an undeployed configuration through an access site in a wall of a first body lumen. In some cases, the method may include retracting an outer sheath proximally and past an anchoring component disposed at a distal portion of an inner tubular member based on positioning the stent. A distal portion of the stent may be disposed between the anchoring component and the outer sheath while the stent is in the undeployed configuration. The method may further include deploying the distal portion of the stent from the outer sheath and within the first body lumen and expanding a proximal portion of the stent from within the outer sheath such that upon fully exiting the outer sheath, the proximal portion expands to a deployed configuration within a second body lumen.

Abstract: Methods, apparatuses, and systems are described for stent delivery and positioning for transluminal application. The system may include a stent that is disposed coaxially onto an inner tubular member. In some cases, the system may include an outer sheath disposed coaxially along at least a portion of the inner tubular member. The system may include a distal cutting element coupled with a distal end of the inner tubular member and an anchoring component disposed at a distal portion of the inner tubular member. The anchoring component may be configured to retain a distal portion of the stent in place along the inner tubular member as the outer sheath is retracted proximally to deploy the stent, wherein upon retraction of the outer sheath, the stent releases from the anchoring component and expands into a deployed configuration within the body lumen.

Abstract: Methods, apparatuses and systems are described for providing access to a body lumen. The access system may include an access catheter with a lumen extending from a proximal end to a distal end of the access catheter and a stylet configured to fit within the lumen of the access catheter. The stylet may include a lumen extending from a proximal end to a distal end of the stylet and a piercing tip at the distal end of the stylet configured to protrude from the distal end of the access catheter. The access system may be advanced adjacent to the body lumen and the piercing tip of the stylet may pierce the wall of the body lumen by advancing the stylet and the access catheter together.

Abstract: An end tube has an interior and exterior diameter and a length. A central tube has an interior and an exterior diameter and a length. The length of the central tube is greater than the length of the end tube. The exterior diameter of the end tube is essentially equal to the interior diameter of the central tube. An upper portion of the end tube is inserted into and attached to a lower portion of the central tube. In this manner a lower portion of the end tube is adapted to be inserted into a vent pipe of a roof.