A stent delivery system including an elongate shaft of a medical device, a stent selectively coupled to a distal portion of the elongate shaft, and a coupling mechanism for selectively coupling the stent to the elongate shaft by inserting a tab on one of the stent or the elongate shaft into an opening in the other of the stent or the elongate shaft. The tab may be deflected from a first position to a second position to disengage the tab from the opening.

A stent delivery system including an elongate shaft of a medical device, a stent selectively coupled to a distal portion of the elongate shaft, and a coupling mechanism for selectively coupling the stent to the elongate shaft by inserting a tab on one of the stent or the elongate shaft into an opening in the other of the stent or the elongate shaft. The tab may be deflected from a first position to a second position to disengage the tab from the opening.

A guide catheter extension, having a push member having a proximal end and a distal end; a tube frame coupled to the distal end of the push member, the tube frame defining a lumen having a diameter sufficient to receive an interventional vascular device therethrough; and an inflatable element coupled to the tube frame, wherein the inflatable element is expandable into the lumen.

A guide catheter extension, having a push member having a proximal end and a distal end; a tube frame coupled to the distal end of the push member, the tube frame defining a lumen having a diameter sufficient to receive an interventional vascular device therethrough; and an inflatable element coupled to the tube frame, wherein the inflatable element is expandable into the lumen.

A catheter device for transvascular delivery of a medical device to a cardiac valve region of a patient comprises an elongate sheath with a first lumen, a distal end for positioning at a heart valve, a second lumen that extends parallel to or in the sheath, and an expandable embolic protection filter. The filter is arranged to extend from an orifice of the second lumen and, in the expanded, covers ostia of the side branch vessels in the aortic arch.

Systems and methods are provided for performing a medical procedure within a patient's body that involves a thoracic duct including an ostium communicating with the patient's venous system. A distal end of a catheter is introduced through the patient's venous system into a body lumen adjacent the ostium of the thoracic duct. An expandable member on the distal end of the tubular member may be expanded adjacent the ostium, e.g., within the body lumen or the thoracic duct itself, and used to isolate the thoracic duct from the body lumen, whereupon a medical procedure may be performed via the thoracic duct. For example, lymphatic fluid may be removed from the thoracic duct through a lumen of the tubular member and/or one or more agents may be introduced into the thoracic duct through the tubular member.

In certain examples, aspects are directed to an ablation tool or other procedure-specific tool to treat or assess biological tissue (e.g., ablate cardiac tissue) having a first tissue side and a second, opposite tissue side at which a magnetic-draw element is to be located. In a specific example, a first magnetic element is associated with or coupled to a catheter tool having an expandable portion to transition from a first state towards a second state for providing an expanded girth, so that the expandable portion surrounds the first magnetic element and moves the procedure-specific tool, in part by the first magnetic element moving via magnetic attraction. While the first magnetic element and the magnetic-draw element align on either side of the biological tissue, the procedure-specific tool may be used for the procedure.

A covered catheter, including a catheter body coated with a lubricant to facilitate entry into tissue of a user, and a covering sheath, including a sheath body to cover at least a portion of the catheter body in an extended position, and expose the catheter body in a retracted position, a first end cap disposed on at least a portion of a first end of the sheath body to enclose the first end of the sheath body, and a second end cap disposed on at least a portion of a second end of the sheath body to enclose the second end of the sheath body.

Described herein are various embodiments of flexible catheters comprising one or more flexibility regions. In one embodiment, a catheter comprises an elongate body having a proximal segment and a distal segment; a first lumen defined by the elongate body and configured for drainage of a liquid from a bodily region; and a plurality of flexibility regions on or in the distal segment of the elongate body. The plurality of flexibility regions, collectively, is configured to passively bend anteriorly. Further, at least one of the plurality of flexibility regions has a defined percent volume of material removed and a defined cut depth percentage. The features and arrangement of the flexibility regions described herein result in the catheter requiring reduced force during insertion into a bodily lumen.

A system for treating heart disease, such as pulmonary hypertension or right heart failure, including an implantable component and external components for monitoring the implantable component is provided. The implantable component may include a compliant member, e.g., balloon, coupled to a reservoir via a conduit. Preferably, the compliant member is adapted to be implanted in a pulmonary artery and the reservoir is adapted to be implanted subcutaneously. The external components may include a clinical controller component, monitoring software configured to run a clinician's computer, a patient monitoring device, and a mobile application configured to run on a patient's mobile device.