The present disclosure relates generally to the field of medical devices and establishing fluid communication between body lumens. In particular, the present disclosure relates to devices and methods for establishing a controlled flow or access passage between body lumens.

An occluder, an occluding system, and a conveying device are provided. The occluder includes an occluding frame. The occluding frame includes a first occluding unit, a middle portion occluding unit, a second occluding unit, and waist portions. Both ends of the middle portion occluding unit are connected to the first occluding unit and the second occluding unit, respectively, by the waist portions. A fixing member is sleeved on each waist portion. A channel is formed at a middle portion of each fixing member. The occluding frame has an inner cavity. A first opening is formed on the first occluding unit. A second opening is formed on the second occluding unit. The first opening, the channel, the inner cavity, and the second opening are communicated to form a path. A locking member can be omitted in the occluder.

Disclosed is a false lumen closure assembly for closing a false lumen in a body vessel including a compressed false lumen occluder, a carrier catheter and a retractable sheath. The compressed false lumen occluder includes a stent graft including at least one occlusive barrier across the stent graft to occlude blood flow through an interior of the stent graft. The carrier catheter carries the false lumen occluder and extends from a proximal end proximal of the false lumen occluder to a distal end distal of the false lumen occluder, and passes the false lumen occluder exteriorly of the stent graft. The compressed false lumen occluder and at least part of the carrier catheter are disposed in a lumen of the retractable sheath.

A device and method is provided herein for esophageal impingement of a patient's aorta. The device may be inserted into a patient's esophagus and positioned at the location where the esophagus passes over the patient's aorta. In this position, an actuation device is used to apply pressure to the patient's aorta through their esophagus to impinge or occlude the aorta to stop or significantly reduce hemorrhaging. A manually operable actuator handle enables a physician to manipulate a head assembly of the device through three distinct degrees of freedom of movement so as to control placement and direction of force against the patient's esophagus and, in turn, their aorta.

An endoluminal pursestring device is provided and includes a handle assembly, a shaft, an elongated fork, a plurality of surgical fasteners disposed with the shaft, and a suture engaged with the surgical fasteners. The suture is secured to a head of each of the surgical fasteners, and extends proximally through the handle assembly. In use, a distal end of the endoluminal pursestring device is positioned adjacent tissue surrounding a lumen, and the handle assembly is rotated to cause the distal-most surgical fastener to be rotated into the tissue. The following surgical fasteners are also rotated into other portions of the tissue surrounding a lumen. The suture connecting each of the surgical fasteners is then pulled such that the surgical fasteners are pulled together, thereby closing the lumen.

Intrasaccular flow diverter including: an interior fill braid physically inverted over itself forming a proximal inverted end and an opposite free end; and a dome braid disposed distally of and secured to the interior fill braid. Subject to application of an external mechanical force, the dome braid is transitionable between an expanded state and a compressed state. The dome braid has a proximal end with an opening defined therein through which starting at the free end the interior fill braid is passable therethrough exerting a radially outward force on the dome braid. A delivery wire is releasably detachable from the proximal inverted end of the interior fill braid. The dome braid has a stiffer profile relative to that of the interior fill braid to maintain in position within the aneurysm the dome braid as the interior fill braid is advanced therein.

A sheath, including a sheath body, a handle, and a traction wire. The traction wire includes a first traction wire. The handle includes a first guide rail member and a first slider. The first slider is connected to the first traction wire. A first groove is provided on an outer wall of the first guide rail member along an axial direction. The first groove includes a first bottom and a first side wall. The first slider slides in the first groove along the first side wall so as to drive the first traction wire to move. At least part of the outer wall of the first guide rail member is radially recessed to a central shaft of the first guide rail member to form the first groove.

The inventive device may include a delivery catheter that remains coupled to an expandable stent portion having an hourglass or “diabolo” shape. The temporary stent device is configured to lodge the shunt portion securely in the atrial septum, preferably the fossa ovalis, to function as an interatrial shunt, allowing blood flow between the left atrium to the right atrium responsive to a pressure differential across the atrial septum. Upon completion of the treatment, a delivery sheath may be used in conjunction with cinching cord coupled to the stent portion to retrieve and remove the temporary shunt device from the patient.

An occluder device is provided for occluding a cardiovascular defect or a gap between a medical device and adjacent body tissue, the device including a compliant balloon defining a fluid-tight balloon chamber and a balloon channel forming a longitudinal passage from a proximal to a distal side of the balloon, the balloon including a fluid port for filling a fluid into the balloon chamber. A tip and a base are coupled to the distal and the proximal sides of the balloon, respectively. At least one connecting strut is attached to the tip and to the base. An elongate actuator is disposed longitudinally slidable in the balloon channel and connected to the tip, and longitudinally slidable with respect to the base so as to set a distance between the tip and the base. A lock is configured to maintain the distance between the tip and the base. Other embodiments are also described.

A medical device for making foam includes a syringe having a plunger for dispensing a liquid from a liquid dispensing port, and a mixing chamber including a mixing chamber inlet, a mixing chamber outlet, a liquid flow channel extending between the mixing chamber inlet and the mixing chamber outlet, and a gas inlet channel that intersects with the liquid flow channel. The system has a gas cartridge containing the gas, a first gas conduit connected with the syringe, and a second gas conduit connected with the gas inlet channel. An actuator is coupled with the gas cartridge for releasing the gas into the first and second gas conduits. The released gas in the first gas conduit forces the plunger toward the liquid dispensing port for dispensing the liquid from the liquid dispensing port and into the liquid flow channel while the released gas in the second gas conduit flows into the gas inlet channel of the mixing chamber for mixing with the liquid in the liquid flow channel.