Motor assembly with heat exchanger for catheter pump
First Claim
1. A catheter pump system comprising:
- an impeller;
a catheter body having a supply lumen therethrough, and through which a first fluid is supplied to a distal portion of the catheter body;
a drive shaft disposed inside the catheter body and coupled with the impeller at a distal portion of the drive shaft; and
a motor assembly comprising;
a rotor mechanically coupled with a proximal portion of the drive shaft; and
a stator assembly disposed about the rotor and configured to cause the rotor to rotate; and
a heat exchanger coupled with the motor assembly to remove heat therefrom, the heat exchanger comprising a volume to receive a second fluid, wherein the heat exchanger is disposed about a portion of the stator assembly, and wherein the volume is in fluid isolation from the supply lumen of the catheter body.
3 Assignments
0 Petitions
Accused Products
Abstract
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.
487 Citations
20 Claims
-
1. A catheter pump system comprising:
-
an impeller; a catheter body having a supply lumen therethrough, and through which a first fluid is supplied to a distal portion of the catheter body; a drive shaft disposed inside the catheter body and coupled with the impeller at a distal portion of the drive shaft; and a motor assembly comprising; a rotor mechanically coupled with a proximal portion of the drive shaft; and a stator assembly disposed about the rotor and configured to cause the rotor to rotate; and a heat exchanger coupled with the motor assembly to remove heat therefrom, the heat exchanger comprising a volume to receive a second fluid, wherein the heat exchanger is disposed about a portion of the stator assembly, and wherein the volume is in fluid isolation from the supply lumen of the catheter body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method of cooling a motor of a catheter pump system, the method comprising:
-
directing a distal flow of a first fluid through a supply lumen of a catheter body of the catheter pump system, the catheter body having a drive shaft disposed therein and coupled to an impeller at a distal portion of the drive shaft; directing a proximal flow of the first fluid through a chamber of a motor assembly of the catheter pump system, the chamber having a rotor of the motor assembly disposed therein; and directing a coolant flow through a lumen of a heat exchanger coupled about a portion of a stator assembly of the motor assembly, the lumen in fluid isolation from the supply lumen. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
-
Specification