Attachment mechanisms for motor of catheter pump

• US 9,675,738 B2
• Filed: 01/21/2016
• Issued: 06/13/2017
• Est. Priority Date: 01/22/2015
• Status: Active Grant

• Current Assignee: TC1 LLC (Abbott Laboratories)
• Original Assignee: TC1 LLC (Abbott Laboratories)
• Inventors: Tanner, Adam R., Butler, Michael R.
• Primary Examiner(s): Wieland, Robert N
• Application Number:
  US15/003,696
• Publication Number:
  US 20160213825A1
• Time in Patent Office: 509 Days
• CPC Class Codes: A61M 39/00 Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use for respiratory devices, e.g. tracheal tubes A61M16/00; artificial heart valves A61F2/24
• CPC Class Codes: A61M 60/13 by means of a catheter allowing explantation, e.g. catheter pumps temporarily introduced via the vascular system
• CPC Class Codes: A61M 60/148 in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
• CPC Class Codes: A61M 60/174 discharging the blood to the ventricle or arterial system via a cannula internal to the ventricle or arterial system
• CPC Class Codes: A61M 60/216 including a rotating member acting on the blood, e.g. impeller
• CPC Class Codes: A61M 60/414 transmitted by a rotating cable, e.g. for blood pumps mounted on a catheter
• CPC Class Codes: A61M 60/416 transmitted directly by the motor rotor drive shaft
• CPC Class Codes: A61M 60/585 User interfaces
• CPC Class Codes: A61M 60/808 specially adapted for deformable impellers, e.g. expandable impellers
• CPC Class Codes: A61M 60/857 Implantable blood tubes

Abstract

A catheter pump includes an impeller and a drive shaft coupled with the impeller. The catheter pump includes a motor assembly coupled with the drive shaft. The motor assembly includes a motor housing having an opening through a wall of the motor housing and a flexible member disposed about the opening, the flexible member configured to engage a connection portion of a platform.

Claims

1. A catheter pump system comprising:

an impeller;

a drive shaft coupled with the impeller; and

a motor assembly coupled with the drive shaft, the motor assembly comprising a motor housing having an opening through a wall of the motor housing and a flexible member disposed about the opening, the flexible member configured to engage a connection portion of a platform.

2. The catheter pump system of claim 1, further comprising the platform.

3. The catheter pump system of claim 2, wherein the platform includes a clamp or a band sized and shaped to be disposed about a portion of a patient.

4. The catheter pump system of claim 1, wherein the connection portion of the platform comprises a projection having a groove formed about a perimeter of the projection, wherein the motor assembly is secured to the platform by inserting the projection into the opening such that the flexible member is captured in the groove.

5. A kit for a catheter pump system comprising:

an impeller;

a drive shaft coupled with the impeller;

a motor assembly coupled with the drive shaft, the motor assembly comprising a connector;

a first platform to be mounted to a patient or a structure to support the motor assembly, the first platform configured to attach to the motor assembly by way of the connector; and

a second platform to be mounted to the patient or the structure to support the motor assembly, the second platform configured to attach to the motor assembly by way of the connector.

6. The kit of claim 5, wherein the first platform comprises a band or a clamp.

7. A medical device housing, comprising:

a housing enclosing the contents of a medical device, wherein the housing is substantially water resistant;

a coupling mechanism disposed on the housing;

wherein the coupling mechanism is configured to couple to a corresponding connection piece on a first support structure and a common connection piece on a second support structure.

8. The medical device of claim 7, wherein the housing further comprises:

a first segment;

at least a second segment joined to the first segment by a hinge; and

a latch for securing the first segment to the at least second segment thereby enclosing the contents of the housing.

9. The medical device of claim 8, wherein one of the coupling mechanism and the connection piece comprises a protrusion projecting from the housing surface and forming a radial groove, and the other comprises a spring lock mechanism for locking into the groove.

10. The medical device of claim 7, wherein the coupling mechanism comprises a housing connector for cooperating with the respective connection piece.

11. The medical device of claim 10, wherein the coupling mechanism comprises a canted spring locking mechanism.

12. The medical device of claim 10, further comprising a locking mechanism for locking the coupling mechanism after the coupling mechanism cooperates with the respective connection piece.

13. A catheter pump system comprising:

an impeller;

a drive shaft coupled with the impeller;

a motor assembly coupled with the drive shaft, the motor assembly comprising a motor housing having a first connector portion; and

a mount platform having a second connector portion;

wherein one of the first and second connector portions comprises an opening having a flexible member disposed therein, the other of the first and second connector portions being insertable into the opening to compress the flexible member within the opening to secure the first and second connector portions together.

14. The catheter pump system of claim 13, wherein the other of the first and second connector portions comprises a projection, the projection wider than the opening.

15. The catheter pump system of claim 13, wherein the mount platform comprises an articulating arm.

16. The catheter pump system of claim 13, wherein the mount platform comprises a band configured to be disposed about an arm or a leg of a patient.

17. The catheter pump system of claim 13, wherein the first connector portion comprises the opening having the flexible member and the second connector portion comprises a projection insertable into the opening.