A catheter blood pump includes a cannula with an expandable central portion having a proximal end, a distal end and a blood flow conduit therebetween. A flexible inlet portion at the distal end is provided with a plurality of spaced apart inlet struts configured to prevent an obstruction from entering, and a flexible outlet portion is provided with a plurality of spaced apart outlet struts operative to reduce a swirl velocity of blood, wherein the plurality of spaced apart inlet struts and the plurality of spaced apart outlet struts are fabricated from a collapsible shape memory material.

A device to assist the performance of a heart with at least one pump that is formed as a rotary pump and driven via a magneto coupling.

A percutaneous circulatory support device includes a housing and an impeller disposed within the housing. The impeller is rotatable relative to the housing to cause blood to flow through the percutaneous circulatory support device. The device further includes a reservoir disposed within the housing, and the reservoir carries at least one anticoagulant.

A percutaneous circulatory support device includes a housing and an impeller disposed within the housing. The impeller is rotatable relative to the housing to cause blood to flow through the percutaneous circulatory support device. The device further includes a reservoir disposed within the housing, and the reservoir carries at least one anticoagulant.

A catheter pump system includes a catheter assembly having a proximal end, a distal end, and an elongate body extending therebetween. The catheter pump system also includes a motor assembly including a shaft assembly extending at least partially within the elongate body of the catheter assembly. The shaft assembly is configured to rotate about an axis. The catheter pump system further includes a flow diverter housing defining a chamber and a fluid pathway through which a proximally-conveyed fluid flows. The shaft assembly extends outward from the chamber into an inner lumen of the elongate body. The catheter pump system also includes a seal configured to extend around and engage the shaft assembly to inhibit fluid within the elongate body of the catheter assembly from entering the chamber at least about an outer periphery of the shaft assembly.

A catheter pump system includes a catheter assembly having a proximal end, a distal end, and an elongate body extending therebetween. The catheter pump system also includes a motor assembly including a shaft assembly extending at least partially within the elongate body of the catheter assembly. The shaft assembly is configured to rotate about an axis. The catheter pump system further includes a flow diverter housing defining a chamber and a fluid pathway through which a proximally-conveyed fluid flows. The shaft assembly extends outward from the chamber into an inner lumen of the elongate body. The catheter pump system also includes a seal configured to extend around and engage the shaft assembly to inhibit fluid within the elongate body of the catheter assembly from entering the chamber at least about an outer periphery of the shaft assembly.

A catheter pump is disclosed. The catheter pump can include an impeller and a catheter body having a lumen therethrough. The catheter pump can also include a drive shaft disposed inside the catheter body. A motor assembly can include a chamber. The motor assembly can include a rotor disposed in the at least a portion of the chamber, the rotor mechanically coupled with a proximal portion of the drive shaft such that rotation of the rotor causes the drive shaft to rotate. The motor assembly can also comprise a stator assembly disposed about the rotor. The motor assembly can also include a heat exchanger disposed about the stator assembly, the heat exchanger may be configured to direct heat radially outward away from the stator assembly, the rotor, and the chamber.

A catheter pump is disclosed. The catheter pump can include an impeller and a catheter body having a lumen therethrough. The catheter pump can also include a drive shaft disposed inside the catheter body. A motor assembly can include a chamber. The motor assembly can include a rotor disposed in the at least a portion of the chamber, the rotor mechanically coupled with a proximal portion of the drive shaft such that rotation of the rotor causes the drive shaft to rotate. The motor assembly can also comprise a stator assembly disposed about the rotor. The motor assembly can also include a heat exchanger disposed about the stator assembly, the heat exchanger may be configured to direct heat radially outward away from the stator assembly, the rotor, and the chamber.

A quick-connection type magnetic transmission apparatus for use in a medical interventional instrument, comprising a drive-side housing and a driven-side housing. The drive-side housing and the driven-side housing are coaxially arranged and are connected in a nested mode; a magnetic coupling structure, a magnetic coupling and coaxial guiding mechanism, and an integral coaxial guiding mechanism are sequentially comprised from inside to outside; the magnetic coupling structure consists of a magnetic transmission drive end (12), a magnetic transmission driven end (11), and a quick-connection separation sleeve (13); the magnetic coupling and coaxial guiding mechanism consists of a magnetic coupling and guiding sleeve (21) and a magnetic coupling and guiding groove (22); the integral coaxial guiding mechanism consists of a coaxial guiding sleeve (31), a coaxial guiding groove (32), and a coaxial locking structure. The quick-connection type magnetic transmission apparatus for use in the medical interventional instrument uses a double guiding-locking fit structure, achieves quick connection, and ensures a minimal transmission gap.

A quick-connection type magnetic transmission apparatus for use in a medical interventional instrument, comprising a drive-side housing and a driven-side housing. The drive-side housing and the driven-side housing are coaxially arranged and are connected in a nested mode; a magnetic coupling structure, a magnetic coupling and coaxial guiding mechanism, and an integral coaxial guiding mechanism are sequentially comprised from inside to outside; the magnetic coupling structure consists of a magnetic transmission drive end (12), a magnetic transmission driven end (11), and a quick-connection separation sleeve (13); the magnetic coupling and coaxial guiding mechanism consists of a magnetic coupling and guiding sleeve (21) and a magnetic coupling and guiding groove (22); the integral coaxial guiding mechanism consists of a coaxial guiding sleeve (31), a coaxial guiding groove (32), and a coaxial locking structure. The quick-connection type magnetic transmission apparatus for use in the medical interventional instrument uses a double guiding-locking fit structure, achieves quick connection, and ensures a minimal transmission gap.