A device (2) for providing circulatory assistance is provided and comprises a balloon (4) comprising a membrane defining a cavity having an internal volume (Vc), wherein the balloon comprises a proximal portion (4a) comprising a proximal end and a distal portion (4b) comprising a distal end. The device (2) further comprises a first catheter, affixed to the distal end of the balloon (4) at a first fixation point (P1) and a second catheter (8), affixed to the proximal end of the balloon at a second fixation point (P2). The second catheter (8) is configured for axial movement with respect to the first catheter or guide wire (6) between a first position in which the first and second fixation points (P1, P2) are spaced apart from each other in the longitudinal direction by a first distance (Dx), which is variable to bring about inversion of the balloon.

A device for reducing pulsatile pressure within a vessel to treat heart disease, such as pulmonary hypertension, includes a compliant body structured to expand and contract upon changes in pressure within the vessel, a reservoir structured for holding a fluid therein, and a conduit extending between and fluidly coupling the reservoir and the compliant body, wherein the device includes a graphene-polymer composite designed to resist diffusion of the fluid through the device.

A cardiac assist device (1) with a cup element (2), an inner balloon element (5) and a tube element (6). The cup element (2) has a cup wall (2a), one or more in-flow openings (3), and an outflow element (4 having an aperture (4a). The inner balloon element (5) is positioned inside the cup element (2) free from the outflow element (4). The tube element (6) is arranged for inflating and deflating the inner balloon element (5) during operation. During operation in a pumping operational mode, the combination of first material, dimensions of the cup wall (2a), and dimensions of the outflow element (4) provides a containment force by the cup element (2) counteracting an outward directed force of the inner balloon element (5).

An intravascular fluid movement device that includes an expandable member having a collapsed, delivery configuration and an expanded, deployed configuration, the expandable member having a proximal end and a distal end, a rotatable member disposed radially and axially within the expandable member, and a conduit coupled to the expandable member, the conduit at least partially defining a blood flow lumen between a distal end of the conduit and a proximal end of the conduit, the conduit disposed solely radially inside of the expandable member in a distal section of the expandable member.

An intravascular fluid movement device that includes an expandable member having a collapsed, delivery configuration and an expanded, deployed configuration, the expandable member having a proximal end and a distal end, a rotatable member disposed radially and axially within the expandable member, and a conduit coupled to the expandable member, the conduit at least partially defining a blood flow lumen between a distal end of the conduit and a proximal end of the conduit, the conduit disposed solely radially inside of the expandable member in a distal section of the expandable member.

The present invention relates to a perfusion balloon catheter that has an expandable (enlargeable) inner lumen (114) with a novel design feature that allows a continuous flow through this enlarged lumen sufficient perfusion to the distal lumen of the blood vessel or air passage concurrent to and independently of balloon (104) inflation or deflation resulting in the prolonged dilatation and avoiding the high risks of blood or air flow stricture during balloon inflation.

The present invention relates to a perfusion balloon catheter that has an expandable (enlargeable) inner lumen (114) with a novel design feature that allows a continuous flow through this enlarged lumen sufficient perfusion to the distal lumen of the blood vessel or air passage concurrent to and independently of balloon (104) inflation or deflation resulting in the prolonged dilatation and avoiding the high risks of blood or air flow stricture during balloon inflation.

A circulatory assist apparatus comprises an inflatable pumping balloon having a proximal end joined to an elongated balloon catheter, the catheter having a distal end joined to the pumping balloon and a proximal end, separated from the distal end by a length sufficient to extend from within the circulatory lumen to the outside of a patient's body, for receiving positive and negative pressure pulses from a pump to inflate and deflate the pumping balloon; a proximal expandable frame comprising a distal portion of an elongated shaft surrounding the catheter; and a distal expandable frame. The distal end of the elongated shaft is abuttable against a stopping element surrounding the catheter as the shaft is advanced towards the inflatable pumping balloon, or is joined to the catheter in which case the proximal expandable frame is heat set to deploy spontaneously to a predetermined diameter upon release of the elongated shaft.

A circulatory assist apparatus comprises an inflatable pumping balloon having a proximal end joined to an elongated balloon catheter, the catheter having a distal end joined to the pumping balloon and a proximal end, separated from the distal end by a length sufficient to extend from within the circulatory lumen to the outside of a patient's body, for receiving positive and negative pressure pulses from a pump to inflate and deflate the pumping balloon; a proximal expandable frame comprising a distal portion of an elongated shaft surrounding the catheter; and a distal expandable frame. The distal end of the elongated shaft is abuttable against a stopping element surrounding the catheter as the shaft is advanced towards the inflatable pumping balloon, or is joined to the catheter in which case the proximal expandable frame is heat set to deploy spontaneously to a predetermined diameter upon release of the elongated shaft.

An intravascular fluid movement device that includes an expandable member having a collapsed, delivery configuration and an expanded, deployed configuration, the expandable member having a proximal end and a distal end, a rotatable member disposed radially and axially within the expandable member, and a conduit coupled to the expandable member, the conduit at least partially defining a blood flow lumen between a distal end of the conduit and a proximal end of the conduit, the conduit disposed solely radially inside of the expandable member in a distal section of the expandable member.