JP4076479B2 - Extracorporeal battery pack for artificial heart and battery charger with data collection function using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery pack for a controller in an artificial heart pump system, and more particularly to a battery pack for a controller in which a memory device for storing data is mounted in the battery pack and a battery charger with a data collection function using the battery pack.
[0002]
[Prior art]
FIG. 4 shows an example of a conventional auxiliary artificial heart device (refer to Patent Document 1). This artificial heart pump system is composed of a device part embedded in a human body, a human body, Includes equipment parts held externally. The parts embedded in the human body are the rotary pump 50 and the flow meter 51. The parts held outside are a portable controller 52, a clinical data collection device 53 for collecting clinical data, and a patient home support system 54. In this system, the data acquired by the controller 52 is sent to the clinical data collection device 53 where predetermined processing is performed.
[0003]
A device such as the rotary pump 50 implanted in the patient's body is connected to the portable controller 52 through the skin by a cable 55, and the controller 52 is held and fixed by a support device 56 such as a belt. The controller 52 includes two connectors 58 and 59 for connection with one or more batteries 57 for receiving power.
[0004]
Here, the clinical data collection device 53 includes a processor and at least one memory device, and acquires the voltage, current, motor rotation speed, blood flow rate, and the like supplied to the blood pump 50 from the controller 52 to obtain the memory device. To be accumulated. Data acquired from these controllers 52 is displayed on the attached display 60, and control data can be sent to the controller 52 from an input device such as a keyboard (not shown).
[0005]
However, since this clinical data collection device 53 is equipped with a carriage, it can only move within the hospital and is not intended to be brought to the home when the patient returns home. Therefore, there is a need for a portable patient support system 54 that is portable. The home support system 54 is connected to the controller 52 through a cable (not shown) and to a battery connector.
Further, at least one compartment 61 is provided in the home support system 54, and the battery is charged from a charger (not shown) by arranging a battery in this portion.
[0006]
FIG. 5 shows an overall configuration diagram of a conventional artificial heart pump system. This artificial heart pump system includes a pump unit 100 embedded in a human body, a controller 101 that controls the operating state of the pump unit, and a battery 102 that supplies power to a power supply circuit of the controller 101. The controller 101 magnetically connects the processor 103 that controls the entire controller, the memory device 104 that stores the monitoring results of the operating state of the blood pump, the operating conditions of the blood pump unit, and the impeller that constitutes the blood pump 100. A magnetic levitation control circuit 105 that levitates, a motor drive circuit 106 that drives a motor that rotates the impeller, a processor 103, a memory device 104, a magnetic levitation control circuit 105, and a power supply circuit 107 that supplies power to the motor drive circuit 106 A liquid crystal display (LCD) 108 that displays the rotation speed of the impeller of the blood pump, the flow rate of blood, or the discharge pressure, a light emitting element (LED) 109 that displays the operating state of the blood pump and the controller, a blood pump and A buzzer 110 for notifying the controller of an abnormality and a processor And a command button 111 for instructing to change the operation of the blood pump with respect to 03.
[0007]
The operation of the conventional artificial heart pump system shown in FIG. 5 will be described below. The impeller (impeller) provided in the blood pump 100 is controlled so as to be magnetically levitated by the magnetic levitation control circuit 105 and is controlled by the motor driving circuit 106 so as to rotate at a stable rotational speed. The number of rotations of the motor for rotating the impeller is set by a doctor in consideration of the blood viscosity of the patient, the discharge flow rate, and the like, but is usually about 1800 rpm to 2200 rpm (see, for example, Patent Document 2) .)
[0008]
The processor 103 also receives signals from the magnetic levitation control circuit 105 and the motor drive circuit 106, stores necessary information in the memory device 104, and displays a control state of the blood pump 100 on a liquid crystal display device (LCD) 108. Like to do. The display contents of the LCD 108 may be the impeller rotation speed, blood flow rate, blood pump discharge pressure, and the like.
[0009]
Further, when detecting an abnormality of the blood pump 100, the processor 103 changes the display color of the LED light emitting element 109 from, for example, green to red, or activates the buzzer 110 to generate an alarm sound. . The memory device 104 not only records the operating state of the blood pump 100 but also sets conditions for operating the blood pump in advance. The processor 103 stores the set values stored in the memory device 104. It is read and the operating state of the blood pump 100 is controlled.
[0010]
[Patent Document 1]
US Pat. No. 6,183,412 [Patent Document 2]
Japanese Patent Laid-Open No. 8-270595
[Problems to be solved by the invention]
However, in the above-described conventional artificial heart pump system, in order to use the data acquired by the controller 101 of the auxiliary artificial heart system in an external system (such as a monitor), data must be collected by connecting some device to the controller. In addition, since a dedicated process is required, the system configuration and operation feeling must be complicated.
[0012]
In addition, since dedicated equipment is required for data collection, data collection is performed only when a visit is made to a site (such as a hospital) where the equipment is located. For this reason, there has been a problem that the capacity of the memory device 104 in the controller 101 becomes full before that. That is, when the capacity of the memory device 104 is full, no more data is stored, or old data is overwritten, and there is a problem that some data is lost.
[0013]
In order to solve the above-described problems, the present invention provides an extracorporeal battery pack for an auxiliary artificial heart that enables automatic collection of data such as pump data and event logs during daily battery charging. An object of the present invention is to provide a battery charger capable of collecting and accumulating data from.
[0014]
[Means for Solving the Problems]
In order to solve the above problems and achieve the object of the present invention, an extracorporeal battery pack for artificial heart of the present invention includes a blood pump implanted in the body and a controller for controlling the blood pump carried and disposed outside the body. An extracorporeal battery pack used in an artificial heart pump system, the extracorporeal battery pack being provided so as to be separable from the controller, supplying power to the controller, and storing data indicating an operating state of the blood pump and event data The memory device is mounted, and data indicating the operating state of the blood pump is transmitted from the memory device to a controller that controls the operating state of the blood pump . In addition, as a preferred embodiment of the present invention, when the extracorporeal battery pack for artificial heart of the present invention is removed from the controller and charged, the data indicating the operating state of the blood pump stored in the memory device mounted on the battery pack And event data is collected on the charger side of the battery.
[0015]
The battery charger of the present invention is a battery charger with a data collection function electrically connected via a connector to a battery pack including a battery unit and a memory device. The battery charger includes a power supply circuit, a charging circuit, and a battery charger. And a data storage device, and the battery pack used here is, as described above, a blood pump implanted in the body and a controller for controlling the blood pump carried outside the body. It is the extracorporeal battery pack used for the artificial heart pump system provided with. That is, the battery pack is provided so as to be separable from the controller, and is equipped with a memory device for supplying power to the controller and storing data indicating the operating state of the blood pump and event data. Sends the data indicating the operating state of the blood pump to the controller, controls the operating state of the blood pump, and at the time of charging the battery unit, the data stored in the memory device provided in the battery pack is under the control of the processor. It is characterized by being transferred to a data storage device.
[0016]
Furthermore, the battery charger of the present invention includes a network circuit, and can transmit data stored in the memory device to the outside via a communication line when the battery unit is charged.
[0017]
According to the present invention, since the data from the memory device is downloaded to the charger side usually when the battery is charged every day, the capacity of the memory device is full and new data is not accumulated or old data is stored. Will not be erased.
In addition, since the data collection process can be automatically performed simply by connecting the battery pack to the charger for charging, a specific procedure for data collection is not required and the operation is easy.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a block diagram showing an overall configuration of an artificial heart pump system using an artificial heart battery pack. The difference from the conventional artificial heart pump system shown in FIG. 5 is that the memory device 104 provided in the controller 101 in the conventional system is provided in the battery pack.
[0019]
The controller 1 includes a processor 3 that controls the blood pump 2 and the entire controller, a magnetic levitation control circuit 4 that magnetically levitates the impeller in the blood pump 2, and a motor drive circuit 5 that drives a motor that rotates the impeller. A power supply circuit 6, a liquid crystal display (LCD) 7 for displaying the number of revolutions of the impeller of the blood pump 2, a blood flow rate, a discharge pressure, and the like, and a light emitting element for displaying whether the operation of the blood pump and the controller is normal (LED) 8, a buzzer 9 for notifying abnormality of the blood pump and the controller, and an instruction button 10 for instructing the processor 3 to change the operation of the blood pump 2. The power supply circuit 6 supplies power to the processor 3, the magnetic levitation control circuit 4, and the motor drive circuit 5. In FIG. 1, the supply of power is indicated by thick solid arrows, the flow of control signals is indicated by thin solid arrows, and the flow of data is indicated by dotted arrows.
[0020]
The battery pack 11 for an artificial heart according to the present invention includes a battery unit 12 and a memory device 13 each made of a charging battery. The memory device 13 is supplied with electric power from the battery unit 12 and receives data indicating the operating state of the blood pump 2 from the processor 3 of the controller 1 and accumulates it. Data indicating the operating conditions of the blood pump 2 stored in the memory device 13 is sent to the processor 3, and the magnetic levitation control circuit 4 and the motor drive circuit 5 are controlled through the processor 3.
[0021]
Next, the operation of the artificial heart pump system shown in FIG. 1 of the present invention will be described based on the flowchart shown in FIG.
In the flowchart of FIG. 2, first, the magnetic levitation data is acquired from the magnetic levitation control circuit 4 by the processor 3 in the controller 1 (step S1). Based on the acquired data, the processor 3 calculates the control output of the impeller levitation state in the blood pump 2 (step S2), and outputs this to the magnetic levitation control circuit 4 (step S3). The impeller magnetic levitation control is completed in steps S1 to S3.
[0022]
Next, in the processor 3, motor rotation data is acquired from the motor drive circuit 5 (step S4). The processor 3 calculates motor rotation control data based on the acquired data (step S5), and supplies it to the motor drive circuit 5 (step S6). The motor rotation control is completed in steps S4 to S6.
[0023]
When the impeller magnetic levitation control and the motor rotation control are completed, the processor 3 then stores the acquired data in the memory device 13 in the battery pack 11 (step S7). Thereafter, it is determined whether or not to change the data displayed on the LCD 7 of the controller 1 (step S8). When the display data needs to be changed, the processor 3 is instructed to change the display data from the button 10 of the controller 1 or a keyboard or touch panel (not shown), and the data display is updated (step S9). The processing from step S7 to step S9 is a data processing step.
[0024]
Subsequently, it is determined whether there is an abnormality in the display data (step S10). When the display data is abnormal (with an error), an error display such as changing the emission color of the LED 8 in the controller 1 from green to red, for example, is performed (step S11), and at the same time, the buzzer 9 is sounded (step S12). ). Then, error data at the time of abnormality is stored in the memory device 13 in the battery pack 11 through the processor 3 of the controller 1 (step S13). When it is determined that there is no error in the determination step S10, the process returns to the first step S1 to acquire magnetic levitation data.
[0025]
FIG. 3 is a block diagram showing a charger (charger) with a data collection function that collects data stored in the memory device 13 of the battery pack 11 of FIG. 1 according to the embodiment of the present invention.
In FIG. 3, the charger 14 includes a power supply circuit 15 to which AC power is supplied, a charging circuit 16, a processor 17, a data storage device 18 controlled by the processor 17, and a network circuit 19. The power from the power supply circuit 15 is supplied to the charging circuit 16, the processor 17, the data storage circuit 18, and the network circuit 19 as indicated by a thick solid line.
[0026]
In the battery charger with data collection function of FIG. 3, when the battery pack 11 is coupled to the charger 14 by a cable and a connector (not shown) for charging, charging from the charging circuit 16 to the battery unit 12 is started. .
At the same time, in response to a read command from the processor 17 of the charger 14, data stored in the memory device 13 provided in the battery pack 11 is transmitted to the processor 17. The processor 17 stores and saves this data in a large-capacity data storage device 18 and transmits it from a network circuit 19 to a communication line such as a LAN as necessary.
[0027]
Thereby, the data indicating the operating state of the blood pump 2 stored in the memory device 13 of the battery pack 11 is stored in the data storage device 18 of the charger 14 when the battery unit 12 is charged every day. The capacity can be made compact. Moreover, since these clinical data can be transmitted to a distant monitoring department through a communication line such as a LAN, it can be used for early diagnosis.
[0028]
As described above, in the present invention, the memory device 13 for storing data is mounted on the extracorporeal battery pack 11 of the controller 1 for the artificial heart pump, and data indicating the operating state of the blood pump 2 using the communication line from the controller 1 An event log or the like is sent to the battery pack 11 and stored in the memory device 13.
[0029]
Further, since the battery of the artificial heart system needs to be charged on a daily basis, it is periodically removed from the controller 1 and connected to the battery charger 14 (FIG. 3). In the embodiment of the present invention, the data stored in the memory device 13 is downloaded to the large-capacity data storage device 18 in the charger 14 using the charging time of the battery unit 12.
[0030]
【The invention's effect】
As described above, according to the present invention, the pump-related data stored in the memory device 13 in the battery pack 11 can be automatically collected and managed on the battery charger 14 side. It is possible to automatically collect and centrally manage pump data without the need.
Further, since it is not necessary to have a large-scale memory device for recording pump data or the like in the controller 1, it is possible to contribute to downsizing of the controller 1. Furthermore, since it is not necessary for the processor 3 in the controller 1 to perform complicated data management processing, software can be simplified by reducing processing.
[0031]
According to the present invention, it is possible to automatically collect and manage system data without adding any special operation in the auxiliary artificial heart pump system. Further, the controller can be miniaturized by eliminating the memory device from the controller. Furthermore, since the load on the controller processor can be reduced depending on the configuration, a relatively inexpensive processor can be selected.
[Brief description of the drawings]
FIG. 1 is a block diagram showing the overall configuration of an artificial heart pump system using a battery pack equipped with a memory device according to the present invention.
FIG. 2 is a flowchart for explaining the operation of the artificial heart pump system of the present invention.
FIG. 3 is a block diagram of a charger with a data collection function for charging the battery pack of the present invention.
FIG. 4 is a diagram showing an example in which a conventional artificial heart pump system is carried by a human body, a battery charger, and a data collection device.
FIG. 5 is an overall configuration block diagram showing a conventional artificial heart pump system.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1,101 ... Controller, 2, 50, 100 ... Blood pump 3, 17, 103 ... Processor 4, 105 ... Magnetic levitation control circuit 5, 106 ... Motor drive circuit, DESCRIPTION OF SYMBOLS 11 ... Battery pack, 13, 104 ... Memory device, 6, 15, 107 ... Power supply circuit, 7, 108 ... Liquid crystal display (LCD), 8, 109 ... Light emitting element (LED) ), 9, 110 ... buzzer, 10, 111 ... button (for instruction)

Claims (4)

An extracorporeal battery pack for use in an artificial heart pump system comprising a blood pump implanted in the body and a controller for controlling the blood pump carried outside the body , wherein the extracorporeal battery pack is separated from the controller capable provided supplies power to the controller, equipped with a memory device for storing data and event data representing the operation status of said blood pump, the said memory device the operating status of said blood pump An extracorporeal battery pack for an artificial heart, wherein the data to be transmitted is transmitted to the controller that controls an operating state of the blood pump . The external battery pack collects data indicating an operating state of the blood pump and event data stored in the memory device on a battery charger side when the battery pack is removed from the controller and charged. Item 4. The extracorporeal battery pack for artificial heart according to Item 1. A battery charger with a data collection function electrically connected through a connector to a battery pack including a battery unit and a memory device,
The battery charger includes a power supply circuit, a charging circuit, a processor, and a data storage device,
The battery pack connected to the battery charger during charging is
An extracorporeal battery pack for use in an artificial heart pump system comprising a blood pump implanted in the body and a controller for controlling the blood pump carried outside the body,
A memory device is provided so as to be separable from the controller, supplies power to the controller, and stores data indicating an operating state of the blood pump and event data. The memory device includes the blood pump. Means for transmitting data indicating the operating state of the blood pump to the controller for controlling the operating state of the blood pump;
A battery charger with a data collection function, wherein data stored in the memory device provided in the battery pack is transferred to the data storage device under the control of the processor when the battery unit is charged.   The battery charger further includes a network circuit, and when the battery unit is charged, data stored in the memory device is transmitted to the outside through a communication line with the network circuit. The battery charger with the data collection function described.

Images