Systems and methods for forming an anastomosis between two adjacent walls of a digestive tract are provided. The system can include a first and second magnetic implants that are configured to magnetically couple to each other through the two adjacent walls of the digestive tract to compress a portion of the two adjacent walls therebetween and form a necrotic area that becomes surrounded by a scarred edge following a healing time period. The system can also include a retention member that can extend outwardly from a corresponding one of the first and second magnetic implants, the retention member being configured to retain the first and second magnetic implants in position and prevent passage thereof through the necrotic area during the healing time period.

The present technology relates to interatrial shunting systems and methods. In some embodiments, the present technology includes interatrial shunting systems that include a shunting element having a lumen extending therethrough that is configured to fluidly couple the left atrium and the right atrium when the shunting element is implanted in a patient. The system can also include an anchoring mechanism coupled to the shunting element and configured to secure the shunting element within the patients heart.

An anastomotic coupler is provided. A ring can include a receiving portion. A fixation device includes a cartridge. The cartridge includes a plurality of fasteners. Upon actuation of the fixation device, the fasteners puncture the tubular structure. The fasteners are received by the receiving portions such that the tubular structure is coupled with the ring.

Described here are devices, systems, and methods for forming a fistula between two blood vessels. Generally, the systems may comprise a first catheter and a second catheter, which may comprise one or more fistula-forming elements. The first and second catheters may comprise one or more magnetic elements, which may be used to assist in bringing the first and catheters in closer proximity to facilitate fistula formation. In some variations, the magnetic elements may have magnetization patterns such that the flux generated by the magnetic elements is locally concentrated. In some instances, the system may comprise a magnetic control device, which may comprise a magnet, and may be used to increase or create an attractive force between the first and second catheters.

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.

A method is provided for operating a powered surgical stapler having a motor unit, a controller. and a stapling assembly having a closure member, a staple driver member, and a knife member. The controller receives a user input that indicates a tissue gap to be defined by the stapling assembly in a closed state. Based on the user input, the controller controls the motor unit to actuate the closure member to transition the stapling assembly to the closed state to define the tissue gap and clamp tissue therein. The controller then controls the motor unit to actuate the staple driver member to drive staples into the clamped tissue. In response to determining that the staple driver member has reached a predetermined longitudinal position, the controller controls the motor unit to initiate actuation of the knife member to cut the clamped tissue.

A method of producing an arteriovenous (AV) fistula includes producing an anastomosis between a primary blood vessel (e.g., a vein) and a secondary blood vessel (e.g., an artery). A collateral (or competing) blood vessel in fluid communication with one of the primary blood vessel or the secondary blood vessel is identified. A reversible flow restrictor is then applied to the collateral blood vessel to reduce a blood flow rate through the collateral blood vessel. In some embodiments, the anastomosis can be produced percutaneously. In some embodiments, the reversible flow restriction (or a portion thereof) can be removed from the collateral blood vessel. In other embodiments, the reversible flow restriction (or a portion thereof) can be adjusted to allow increased blood flow therethrough while within the collateral blood vessel.

Methods for creating and maintaining an anastomosis between two adjacent blood vessels using percutaneous techniques, for use in hemodialysis procedures are disclosed and described.

Devices and methods divert blood flow from a first vessel to a second vessel and maintain blood flow in the first vessel. The device includes a first segment and a second segment. The first segment is configured to anchor in the first vessel. The first segment includes a window to allow blood to flow into the first segment, through the window, and distal in the first vessel. The second segment is configured to anchor in the second vessel. The second segment is configured to allow blood to flow into the first segment, through the second segment, and into the second vessel.

A system for forming a fistula includes a first catheter, a second catheter, one or more magnetic field sensors, a user output device, and a control unit. The first catheter includes one or more first catheter magnetic elements and a fistula-forming element. The second catheter includes one or more second catheter magnetic elements. The one or more magnetic field sensors are configured to output a magnetic field signal. The control unit is configured to determine a distance of separation of the first catheter from the second catheter based the magnetic field signal from the one or more magnetic field sensors and output a ready signal with the user output device in response to determining that the distance of separation of the first catheter from the second catheter is a predetermined distance or less.