The present invention relates to a percutaneous blood pump (1) and an introducer system to be placed in the circulatory system of a patient e.g. using the Seldinger technique without the need of surgical access. The percutaneous blood pump (1) comprises a pump housing (11) inside which a radially pumping impeller (12) is arranged for rotation by means of a rotating flexible cable housed inside a protective flexible catheter (15) and attached to a bearing housing (21) in which a set of radial and axial bearings are housed and arranged for rotation by means of a flexible cable housed inside another protective flexible catheter (25) and driven by an electric motor (30) in a motor housing (31). In addition, an introducer system, comprising an expandable introducer is provided, arranged to facilitate easy and safe introduction of the percutaneous blood pump. The introducer system may comprise a hemostatic valve to limit blood loss during insertion and percutaneous blood pump use. More particularly, the present invention relates to a per-cutaneous blood pump that can be large enough to deliver full circulatory support and is easily and safely introduced into the circulatory system by means of an expandable introducer. The introducer system may include a closure device that is configured to close the incision site after removal of the blood pump and introducer.

An intravascular blood pump comprises a pump casing having a blood flow inlet and a blood flow outlet, and an impeller arranged in said pump casing so as to be rotatable about an axis of rotation, wherein the impeller has blades sized and shaped for conveying blood from the blood flow inlet to the blood flow outlet. The blood pump further comprises a drive unit for rotating the impeller, the drive unit comprising a plurality of posts arranged about the axis of rotation, wherein each of the posts includes a shaft portion and a head portion. Coil windings around the posts are sequentially controllable so as to create a rotating magnetic field. The drive unit further comprises a back plate which engages ends of the shaft portions of the posts opposite the head portions.

The present invention generally relates to heart treatment systems. In some aspects, methods and systems are provided for facilitating communication between implanted devices. For example, an implantable cardiac rhythm management device may be configured to communicate with an implantable blood pump. The implantable cardiac rhythm management device may deliver heart stimulation rate information in addition to information associated with any detected abnormalities in heart function. In response, the pump may be configured to adjust pumping by the pump to better accommodate a patient's particular needs.

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.

The approach presented here concerns a pump for delivering a fluid. The pump comprises an impeller, a drive device with a shaft, a shaft housing and a sealing device. The impeller is shaped to deliver the fluid. The drive device with the shaft is designed to drive the impeller. The shaft housing is shaped to receive the shaft and/or the drive device. The sealing device comprises at least one casing sealing element and/or an impeller sealing element which is received between the drive device and the impeller and which is designed to prevent fluid from entering the drive device and/or the shaft casing during operation of the pump.

Various aspects of the present disclosure are directed toward apparatuses, systems, and methods that may include a magnetic drive system of a blood pump. The magnetic drive system may include a drive shaft coupled to an impeller, a driven magnet assembly coupled to at least one of the drive shaft and the impeller, and a driving coil assembly configured to drive the driven magnet assembly.

Various aspects of the present disclosure are directed to apparatuses, systems, and methods that may include a magnetic drive system of a blood pump. The magnetic drive system may include an impeller, a drive shaft, a driven magnet assembly, a driving magnet assembly, and a flux enhancer.

A mechanical circulatory support device is provided. The device has a housing containing separate first and second pumps. Each pump having an inlet, an outlet, and an impeller. The device also having a switching mechanism located within the housing and movable from a first position to a second position to divert blood flow within the housing to an inlet of one of the pumps and/or to bypass blood flow relative to one of the pumps within the housing.

A mechanical circulatory support device is provided. The device has a housing containing separate first and second pumps. Each pump having an inlet, an outlet, and an impeller. The device also having a switching mechanism located within the housing and movable from a first position to a second position to divert blood flow within the housing to an inlet of one of the pumps and/or to bypass blood flow relative to one of the pumps within the housing.

The invention relates to a radially compressible and expandable rotor for a pump having at least one impeller blade, wherein the impeller blade has an impeller blade body whose material is elastically deformable as well as at least one stiffening strut which is at least partially embedded in the material of the impeller blade body. The struts are designed suitably in size, shape and arrangement and are integrated in suitable hollow spaces of the impeller blade body for stabilizing the impeller blade. Elements with tensile strength can additionally be provided.