Systems and methods for making and using percutaneously- delivered pumping systems for providing hemodynamic support

Abstract

A percutaneous pumping system for providing hemodynamic support to a patient includes a pumping sleeve that defines a lumen extending along the length of the pumping sleeve. The pumping sleeve is configured and arranged for insertion into patient vasculature. At least one rotatable magnet is disposed in the pumping sleeve. The at least one first magnet is configured and arranged to be driven to rotate by a magnetic field generated external to the pumping sleeve. At least one impeller is coupled to the at least one magnet. Rotation of the at least one magnet causes a corresponding rotation of the at least one impeller. An anchoring arrangement is coupled to the pumping sleeve. The anchoring arrangement is configured and arranged to anchor the pumping sleeve at a target pumping location when the pumping sleeve is inserted into patient vasculature.

1 . (canceled) 
     
     
         2 . A percutaneous pumping system for providing hemodynamic support to a patient, the percutaneous pumping system comprising:
 a stent defining a flow path and being sized for insertion into a blood vessel;   a rotor rotatably mounted within the stent, the rotor defined in part by at least one blade angled with respect to the flow path;   at least one rotatable magnet configured and arranged to be driven to rotate by a magnetic field generated adjacent the stent, wherein rotation of the magnet causes the rotor to rotate;   a power supply configured to generate the magnetic field to drive the rotatable magnet; and   a controller operatively coupled to the power supply to selectively control the power supply to control the rotational speed of the rotor.   
     
     
         3 . The system of  claim 2 , further comprising magnetic field windings configured and arranged to provide the magnetic field. 
     
     
         4 . The system of  claim 3 , wherein the windings are positioned external to the patient. 
     
     
         5 . The system of  claim 3 , wherein the windings are positioned within the patient. 
     
     
         6 . The system of  claim 1 , further comprising a shaft along which the at least one magnet rotates, wherein the shaft does not extend beyond the stent. 
     
     
         7 . The system of  claim 1 , wherein the at least one rotatable magnet comprises a plurality of link magnets coupled to one another in series. 
     
     
         8 . The system of  claim 1 , wherein the at least one blade is expandable. 
     
     
         9 . The system of  claim 1 , wherein the at least one blade is coupled directly to the at least one rotatable magnet. 
     
     
         10 . A percutaneous pumping system for providing hemodynamic support to a patient, the percutaneous pumping system comprising:
 an expandable stent configured and arranged for insertion into patient vasculature;   at least one rotatable magnet disposed within the expandable stent, wherein the at least one rotatable magnet is configured and arranged to be driven to rotate by a magnetic field; and   at least one blade coupled to the at least one rotatable magnet such that rotation of the at least one magnet causes a corresponding rotation of the at least one blade.   
     
     
         11 . The system of  claim 10 , further comprising:
 a power supply configured to generate the magnetic field to drive the rotatable magnet; and   a controller operatively coupled to the power supply to selectively control the power supply to control the rotational speed of the magnet.   
     
     
         12 . The system of  claim 10 , wherein the magnetic field is generated within the patient. 
     
     
         13 . The system of  claim 10 , wherein the magnetic field is generated external to the patient. 
     
     
         14 . The system of  claim 10 , wherein the at least one blade is collapsible. 
     
     
         15 . A percutaneous pumping system for providing hemodynamic support to a patient, the percutaneous pumping system comprising:
 an expandable stent defining a flow path and being sized for insertion into a blood vessel;   a rotor rotatably mounted within the stent;   at least one blade mounted to the rotor;   at least one rotatable magnet configured and arranged to be driven to rotate by a magnetic field generated adjacent the stent, wherein rotation of the magnet causes the rotor to rotate; and   a power supply configured to generate the magnetic field to drive the rotatable magnet.   
     
     
         16 . The system of  claim 15 , further comprising a controller operatively coupled to the power supply to selectively control the power supply to control the rotational speed of the rotor. 
     
     
         17 . The system of  claim 15 , further comprising magnetic field windings configured and arranged to provide the magnetic field. 
     
     
         18 . The system of  claim 17 , wherein the windings are positioned external to the patient. 
     
     
         19 . The system of  claim 17 , wherein the windings are positioned within the patient. 
     
     
         20 . The system of  claim 15 , wherein the at least one blade is collapsible. 
     
     
         21 . The system of  claim 15 , wherein the at least one blade is coupled directly to the at least one rotatable magnet.