# US 9,433,716 B2 · Controller and power source for implantable blood pump

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- Number: US 9,433,716 B2
- Document ID: US9433716B2
- Status: Granted
- Kind: B2
- Application number: 14/843,529
- Filed: 2015-09-02
- Published: 2015-12-24
- Granted: 2016-09-06
- Earliest claimed: 2013-01-04
- Assignees: HeartWare, Inc.
- Applicants: HeartWare, Inc.
- Inventors: Charles Joseph Vadala, Jr.; Jeffrey A. LaRose; John Rudser; Michael Ashenuga
- Web page: https://patentgrep.com/patent/US9433716B2

## CPC

- G06F 1/3212: Monitoring battery levels, e.g. power saving mode being initiated when battery voltage goes below a certain level
- 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
- A61M 60/216: including a rotating member acting on the blood, e.g. impeller
- A61M 60/411: generated by an electromotor
- A61M 60/508: Electronic control means, e.g. for feedback regulation
- A61M 60/876: Implantable batteries
- G06F 1/263: {Arrangements for using multiple switchable power supplies, e.g. battery and AC (G06F1/30 takes precedence)}
- A61M 60/148: in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
- A61M 2205/18: with alarm
- A61M 2205/44: making noise when used incorrectly
- A61M 2205/50: with microprocessors or computers
- A61M 2205/502: User interfaces, e.g. screens or keyboards
- A61M 2205/52: with memories providing a history of measured variating parameters of apparatus or patient
- A61M 2205/8206: battery-operated
- A61M 2205/8262: connectable to external power source, e.g. connecting to automobile battery through the cigarette lighter
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}

## Abstract

Methods and apparatus for controlling the operation of, and providing power for and to, implantable ventricular assist devices which include a brushless DC motor-driven blood pump, are disclosed. In one embodiment, a control system for driving an implantable pump is provided. The digital processor is responsive to data associated with the operation of the pump received at the data transfer port, and from the program data stored in memory, (i) to determine therefrom, the identity of the pump, (ii) to determine therefrom, electrical characteristics and features of the identified pump, and (iii) to adaptively generate and apply to the data port, control signals for driving the identified pump. Latch mechanisms, an elongated flexible electrical cable with a strain relief segment, and a lower housing portion that is heavier than an upper housing portion, may also be provided with the control system.

## Claims

### Claim 1

A control system for driving an implantable blood pump comprising:
a first housing including electronic components configured to drive the pump;
speakers; and
a vibrating mechanism;
wherein the vibrating mechanism vibrates during a first interval following the detection of an alarm condition,
wherein the speakers sound an audible alarm during a second interval following the detection of the alarm condition,
wherein the first interval precedes the second interval,
wherein the speakers are silent during the first interval.

### Claim 2 (depends on 1)

The control system of claim 1, wherein the alarm condition is a low battery condition.

### Claim 3 (depends on 1)

The control system of claim 1, wherein the first interval is about 60 seconds or less.

### Claim 4 (depends on 1)

The control system of claim 1, wherein, during the second interval, the vibrating mechanism does not vibrate.

### Claim 5 (depends on 1)

The control system of claim 1, wherein, during the second interval, the vibrating mechanism does vibrate.

### Claim 6 (depends on 1)

The control system of claim 1, further comprising a first display device coupled to first housing, wherein following the detection of the alarm condition, the first display device illuminates with one of a solid and flashing light alarm.

### Claim 7 (depends on 6)

The control system of claim 6, further comprising a second display device coupled to the first housing, wherein following the detection of the alarm condition, the second display device illuminates with one of a solid and flashing light alarm.