Implantable medical devices

• US 8,858,416 B2
• Filed: 08/26/2013
• Issued: 10/14/2014
• Est. Priority Date: 12/08/2005
• Status: Active Grant

• Current Assignee: Thoratec LLC
• Original Assignee: Thoratec LLC
• Inventors: Crosby, Peter Andrew, Woodard, John Campbell
• Primary Examiner(s): Holmes, Rex R
• Application Number:
  US14/010,349
• Publication Number:
  US 20140005466A1
• Time in Patent Office: 414 Days
• Field of Search: 600/16, 607 2- 3, 607 16- 17
• US Class Current: 600/16
• CPC Class Codes: A61M 2205/3507 with implanted devices, e.g. external control
• CPC Class Codes: A61M 2205/8243 by induction
• 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 60/178 drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
• CPC Class Codes: A61M 60/232 Centrifugal pumps
• CPC Class Codes: A61M 60/422 the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
• CPC Class Codes: A61M 60/515 Regulation using real-time patient data
• CPC Class Codes: A61M 60/538 Regulation using real-time blood pump operational parameter data, e.g. motor current
• CPC Class Codes: A61M 60/585 User interfaces
• CPC Class Codes: A61M 60/824 Hydrodynamic or fluid film bearings
• CPC Class Codes: A61M 60/871 Energy supply devices; Converters therefor
• CPC Class Codes: A61M 60/876 Implantable batteries
• CPC Class Codes: A61M 60/88 Percutaneous cables

Abstract

An active implantable medical device comprising a therapeutic device, a controller and at least one rechargeable battery, wherein a single hermetically sealed housing encapsulates a therapeutic device, controller and rechargeable battery. A hermetically sealed housing additionally encapsulates a wireless interface and a commutator.

Claims

1. A ventricular assist device, comprising:

a blood pump including stators and an impeller;

a first controller configured to energize the stators to produce a rotational torque on the impeller;

at least one rechargeable battery configured to supply power to the blood pump and the first controller;

a first hermetically sealed housing encapsulating the blood pump; and

a second controller and data manager, configured for

providing controller functions in the event the first controller fails, and

storing data about the patient and/or pump.

2. The ventricular assist device of claim 1, wherein the second controller and data manager stores a motor speed and/or motor current data.

3. The ventricular assist device of claim 1, wherein the first hermetically sealed housing includes the blood pump and the first controller.

4. The ventricular assist device of claim 1, further including a second hermetically sealed housing encapsulating the rechargeable battery and the first controller.

5. The ventricular assist device of claim 1, wherein the blood pump is a centrifugal blood pump.

6. The ventricular assist device of claim 1, further comprising,

an external power supply,

a first coil for placement beneath the skin layer,

a second coil for placement above the skin layer, and

a second hermetically sealed housing encapsulating the at least one rechargeable battery and the first coil,

wherein the ventricular assist device is configured to switch between the at least one rechargeable battery and the external power supply to satisfy power requirements of the blood pump.

7. The ventricular assist device of claim 6, wherein the first and second coils interact by one coil inducing an electrical current in the opposed coil thereby allowing the transmission and receipt of electrical energy and coded data transmission between the first and second coils.

8. The ventricular assist device of claim 6, further including a percutaneous lead for recharging the at least one rechargeable battery.

9. The ventricular assist device of claim 6, wherein the first hermetically sealed housing also encapsulates a commutator, which sequentially energizes the stators to produce a rotational torque on the impeller in accordance with a speed signal.

10. The ventricular assist device of claim 6, further including a wireless interface electrically connected to the first controller and configured to transmit and receive data and instructions to and from the ventricular assist device.

11. The ventricular assist device of claim 6, wherein the second controller is coupled to the external power supply.

12. The ventricular assist device of claim 11, wherein the first controller includes a wireless interface for transmitting and receiving data and instructions to and from the second controller.

13. The ventricular assist device of claim 1, wherein the first controller includes a wireless interface for transmitting and receiving data instructions.

14. The ventricular assist device of claim 13, wherein the first controller is configured to transmit and receive data and instructions to and from the second controller.

15. The ventricular assist device of claim 1, wherein the first controller is connected to the second controller by a percutaneous lead.

16. The ventricular assist device of claim 1, wherein the second controller is an external controller and/or data manager (EDCM).

17. The ventricular assist device of claim 16, wherein the second controller comprises a controller running software designed for the purpose of an active implantable medical device control.

18. The ventricular assist device of claim 1, wherein the second controller comprises a controller running software.

19. The ventricular assist device of claim 1, wherein in use the second controller is disposed externally of a patient.

20. The ventricular assist device of claim 1, wherein the second controller and the rechargeable battery are integrated into one housing.

21. The ventricular assist device of claim 1, wherein the first controller and the rechargeable battery are integrated into one hermetically sealed housing.