A diaphragm assembly for a pulsatile fluid pump includes an edge-mounted flexible diaphragm, the diaphragm configured for operation cyclically between a diastole mode and a systole mode. The diaphragm assembly further includes a systolic distribution brace having an interior wall configured to cup a portion of the outside surface of the diaphragm, and a diastolic plate, embedded in the diaphragm, mechanically coupled to a portion of the inside surface of the diaphragm. In the course of the systole mode, force is applied across the maximum radial extent of the systolic distribution brace, so as to impart tension in the diaphragm around the periphery of the systolic distribution brace. In the course of the diastole mode, force is applied across the maximum radial extent of the diastolic plate, so as to impart tension in the diaphragm around the diastolic plate.

A blood flow assist device includes a flexible sleeve, at least one blood flow stimulator incorporated into the sleeve, and an actuator assembly coupled to the blood flow stimulator. The sleeve has a first portion configured to receive at least a portion of a arm and a second portion configured to engage a portion of a hand. The first and second portions of the sleeve properly position each blood flow stimulator on the arm. The actuator assembly individually controls and selectively actuates each blood flow stimulator to apply a stimulus to the arm to control blood flow through a vein in the arm or hand having a vein access device connected thereto. The blood flow assist device may be paired with a blood processing device, with a controller of the blood processing device controlling the actuator assembly based on a pressure and/or flow rate of blood into the blood processing device.

A vascular access tube (2) for a fluid subject to a driving pressure comprises a wall (4) defining a main lumen. A portion of the wall comprises an access port (10) for an object (14) to be introduced through the wall. The access port comprises a biasing structure (12) which provides a self-closing behaviour that is sufficiently strong to remain fluid-tight when exposed to a driving pressure of up to 50 mmHg. The access port is therefore sufficiently fluid-tight to contain pressurised fluid flowing through the vascular access tube.

A portable arm support can be secured to an arm of a patient, for instance during a medical procedure (e.g., filtration of blood of the patient). The arm support can inhibit movement of the arm of the patient in one or more degrees of freedom (e.g., elevation, abduction, adduction, flexion, or the like). In some examples, the arm support includes a cuff and abase. In another example, the arm support includes an elongated member. In yet another example, the arm support includes a constricting band. The arm support can help maintain blood flow in the arm of the patient, and can help protect a catheter inserted into the arm of the patient (or protect other medical equipment proximate to the patient).

The invention relates to a system for treating blood, which includes a single cassette capable of carrying out the various CRRT treatments.

A multiple lumen device for percutaneous left ventricular unloading during venoarterial extracorporeal membrane oxygenation comprising: an expandable cage, an outer catheter, and an inner catheter, wherein a proximal end of the expandable cage is attached to the outer catheter and a distal end of the expandable cage is attached to the inner catheter, such that when the proximal end of the inner catheter is retracted, the cage moves from a compressed configuration to an expanded configuration is described. Also provided are methods for causing the blood of a subject to flow in a retrograde manner using a multiple lumen device.

A pump head is provided. The pump head includes a casing including a blood inlet configured to receive a flow of a blood and a blood outlet configured to allow the blood to flow out of the casing. The pump head also includes a shaft disposed in the casing. The pump head also includes a magnetic structure mounted onto the shaft. The pump head further includes an impeller having an open structure and mounted to an exterior surface of the magnetic structure through an opening provided at the open structure.

Intravascular blood pumps and methods of use. The blood pump include a pump portion that includes a collapsible blood conduit defining a blood flow lumen between an inflow and an outflow. The pump portion includes a distal collapsible impeller axially spaced from a proximal collapsible impeller, at least a portion of each of the distal and proximal collapsible impellers disposed between the inflow and the outflow.

Intravascular blood pumps and methods of use. The blood pump include a pump portion that includes a collapsible blood conduit defining a blood flow lumen between an inflow and an outflow. The pump portion includes a distal collapsible impeller axially spaced from a proximal collapsible impeller, at least a portion of each of the distal and proximal collapsible impellers disposed between the inflow and the outflow.

A catheter assembly includes a catheter including an expandable and contractible tube provided with a lumen and a contact portion provided in a distal end portion of the tube. A stylet can be inserted in the lumen to make the tube expand in the longitudinal direction by coming into contact with the contact portion. A straight connector is provided on a proximal end side of the catheter which can be coupled to the stylet. The connector includes a male screw portion that is engageable with the stylet. The stylet includes a stylet hub disposed on the proximal end side of the catheter and a coupling member that couples the style hub and the straight connector to each other and is engageable with the male screw portion by rotating independently of the stylet hub.