KR101935151B1 - Heart pacemaker with motion detection - Google Patents

Abstract

The present invention relates to a pacemaker provided with a motion detection function, which can precisely detect a motion state of a patient wearing a pacemaker and then control the pacemaking so that the pacemaker can be adjusted to a suitable heart rate for exercise, The present invention relates to a heart pacemaker equipped with a motion detection function that smoothly prevents dizziness from occurring during exercise.
That is, the present invention provides a heart pacemaker comprising: a heartbeat inserted into a heart of a patient and having an electrode formed at an end thereof and a heartbeat generator connected to the lead wire to enable electrical stimulation; A tuning device for adjusting and supplying a pulse to be transmitted to the lead wire; and a controller for controlling the tuning device in response to the signal from the sensing device, A central control device for allowing stimulation to be performed and a movement sensing part for sensing movement information of the patient, and the central control device is capable of controlling the tuning device by receiving sensed exercise information of the movement sensing part .

Description

Heart pacemaker with motion detection [0002]

The present invention relates to a pacemaker provided with a motion detection function, which can precisely detect a motion state of a patient wearing a pacemaker and then control the pacemaking so that the pacemaker can be adjusted to a suitable heart rate for exercise, The present invention relates to a heart pacemaker equipped with a motion detection function that smoothly prevents dizziness from occurring during exercise.

In general, a pacemaker is a device that maintains a normal heartbeat artificially by being used in various arrhythmia diseases, hemodynamic disorders, conduction system disorders and the like which are not normal heartbeats.

The configuration of the pacemaker includes a power supply in which power is stored inside the pacemaker, a sensing device that senses the heartbeat information of the human body, a tuning device that adjusts and supplies pulses to be delivered to the lead wire, And a central control device for receiving the signal and controlling the tune device so that accurate electrical stimulation can be achieved.

The most important configuration of such a pacemaker is the atrium and ventricular tune device that controls the timing of electrical stimulation supplied to the lead wire and the central control device that controls the device.

In fact, if you exercise like running, your body needs a lot of oxygen, so your heart rate should also increase accordingly. However, since the pacemaker of the pacemaker adjusts the heart rate at regular intervals irrespective of whether the patient is exercising or not, the patient who wears the pacemaker has a problem that the oxygen deficiency phenomenon is rapidly detected and the motion can not be continued because of the dizziness there was.

The tuning method of the tuning device is largely divided into a fixed type and a demand type. Fixed mode Pacemaking is a method of continuously adjusting the heart rate at regular intervals regardless of the patient's heart rate. Demand Mode is to adjust the heart rate according to the patient's condition. The pacemaker should be paced only if the patient's heart rate is not present within the Escaped Interval, or if the patient's heart rate is not present at regular intervals (Automatic Interval) after pacemaking.

The type of coordination is divided into inhibition type and induction type. The inhibited heart rate and ventricular pacemaker detects the ventricle and heartbeat of the patient to adjust if there is no ventricle and heartbeat, and suppresses the cochlear output if there is ventricle and atrial pace. Triggered atrial and ventricular tune detects atrial and ventricular beats of the patient and adjusts if there is no atrial and ventricular beats. It triggers the tune output in 0.04 to 0.08 seconds after sensing if atrial and ventricular beats are present.

The pacemaker has various tuning mode algorithms according to the tuning method, the tuning part, the sensing part, various functions (program, heart rate response, anti-tachycardia), and the kind of algorithm is VOO (Ventricular Asynchronous Pacing) Atrial Asynchronous Pacing (AOO), Atrial Pacing, Sensing, and Inhibition (VVI), Ventricular Pacing, Sensing, and Triggering (VVT) Atrial Pacing, Sensing, and Triggering (AAT), Dual-Chamber Asynchronous Pacing (DOO), Dual-Chamber Pacing, Sensing, and Inhibition (Atrial Tracking) .

However, in the various tuning modes of the pacemaker, the tuning control is not performed depending on whether the patient is exercising, and there is no configuration to detect whether the patient is exercising, so that the existing problems can not be solved at all.

As a prior art relating to coordination of a pacemaker, Patent No. 1462084 (a pacemaker simulation device for medical use) includes a heartbeat simulation unit for simulating various heartbeat waveforms, a heartbeat waveform output unit for simulating a heartbeat waveform simulated by the heartbeat simulation unit, A D / A converter for outputting a heartbeat waveform as an electric signal, and a display unit for displaying the heartbeat waveform state visually, the display state being changed in accordance with a heartbeat waveform state output from the D / A converter unit, A technique including a human dummy portion is disclosed.

However, the prior art described above is a technique for confirming whether the pacemaker is operating normally by using a virtual heartbeat. It is not possible to grasp whether the subject is exercising at all, The information on the actual heart pacemaker can not be solved and there is no description to suggest the problem.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a heart pacemaker that can detect motion information of a patient, An object of the present invention is to provide a heart pacemaker equipped with a motion detection function to smoothly supply oxygen and prevent dizziness by adjusting the heart rate to a suitable heart rate when a patient wearing a pacemaker performs running.

The heartbeat pump includes a heartbeat inserted into a patient's heart and having an electrode formed at an end thereof and a heartbeat generator connected to the lead wire to enable electrical stimulation. A tuning device for adjusting and supplying a pulse to be transmitted to the lead wire; and a controller for controlling the tuning device in response to the signal from the sensing device, A central control device for allowing stimulation to be performed and a movement sensing part for sensing movement information of the patient, and the central control device is capable of controlling the tuning device by receiving sensed exercise information of the movement sensing part .

And a gyroscope sensor for sensing information about a rotation angle of the patient, wherein the central control unit is configured to detect the acceleration information of the acceleration sensor, And the sensor information of the gyroscope sensor is comprehensively analyzed to control the tuning device.

In addition, the acceleration sensor and the gyroscope sensor are made of information on the X, Y, and Z axes of the patient.

Further, the central control unit sets a threshold value of the acceleration sensor and the gyroscope sensor, and when the measured value of the two sensors exceeds the threshold value, the central control unit recognizes that the exercise is in progress and controls the tuning interval.

Further, the exercise intensity is determined according to an excess of the threshold value, and the tune interval is controlled step by step according to the exercise intensity.

Further, the threshold value is set as information obtained through the actual exercise process of the patient.

The present invention has the effect of detecting the exercise information of a patient wearing a pacemaker through the movement sensing part and adjusting the heart rate accordingly, thereby facilitating oxygen supply to the body and preventing dizziness of the patient.

In addition, the movement sensing part of the present invention includes a acceleration sensor and a gyroscope sensor, and then the sensing information measured by each sensor is comprehensively analyzed to perform coordination control, thereby preventing erroneous coordination control due to mistaken recognition, The reliability of the tuning control is improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a heart pacemaker equipped with a motion detection function according to the present invention;
Fig. 2 is a view showing characteristics relating to exercise information when a patient runs; Fig.
3 is a view showing a difference in rotation angle between a patient's walking and running;
4 is a flowchart showing a tuning control process according to the threshold value of the present invention

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

As shown in FIG. 1, the present invention includes a lead wire 10 inserted into a heart of a patient and having an electrode formed at an end thereof, and a heartbeat generator 20 connected to the lead wire 10, To a heart pacemaker.

As shown in FIG. 1, a heart pacemaker equipped with a motion sensing function of the present invention includes a power supply unit 100 storing a power source, a sensing device 200 sensing heartbeat information of a patient, A central control unit 400 for controlling the tuning device 300 to receive a signal from the sensing device 200 to enable accurate electrical stimulation, And a movement sensing unit 500 for sensing movement information of the patient. The central control device 400 receives the sensed exercise information of the movement sensing unit 500 and controls the tuning device 300 .

The central control device 400 for controlling the power supply part 100, the sensing device 200, the tuning device 300 and the tuning device 300 is a known technology. The configurations listed above are disclosed in the patent application No. 1731211 (A pacemaker capable of low power operation). Therefore, detailed description of each configuration will be omitted.

The present invention detects motion information of a patient through the movement sensing unit 500 and then analyzes the sensed information in the central control unit 400 to determine whether the exercise is not in motion or lightly walking, And then control the tuning according to the situation.

The movement sensor unit 500 includes an acceleration sensor 510 for sensing the movement speed and vibration of the patient, a gyroscope sensor for sensing information about the rotation angle of the patient, 520). Accordingly, the central controller 400 controls the tuning device by comprehensively analyzing the sensing information of the acceleration sensor 510 and the sensing information of the gyroscope sensor 520.

The acceleration sensor 510 is configured to acquire general information on the motion of the patient through the vibration information and the movement speed of the patient in the X, Y, and Z axes. The vibration information includes motion information according to the reciprocating motion of each axis It means. The gyroscope sensor 520 detects rotation information about the X, Y, and Z axes of the patient, that is, how much the angle when the patient's body rotates is changed.

The reason why the movement sensing part 500 is further comprised of the acceleration sensor 510 as well as the gyroscope sensor 520 is that the movement is not performed when motion detection is performed only by the acceleration sensor 510 It can be mistaken. For example, when a person is riding in a vehicle having a heavy vibration or using a massage chair, the robot does not actually exercise but can be judged that the robot is exercising when only the sensing information of the acceleration sensor 510 is used. Therefore, (510) and the gyroscope sensor (520) together.

As shown in FIG. 2, the measured value of the acceleration sensor 510 at the time of actual running increases the reciprocating motion (vibration) in the Z-axis direction more than when walking, and increases the moving speeds of the X-axis and the Y- And the angle value of the gyroscope sensor 520 is changed. In fact, since the body tends to rotate more when the person is running, the angle of rotation when walking is about 10 degrees, as shown in Fig. 3, but when it is running, it rotates at a relatively large angle of about 30 degrees.

Accordingly, the central controller 400 sets the threshold values of the acceleration sensor 510 and the gyroscope sensor 520, and if the measured values of the two sensors exceed the threshold value, the central controller 400 recognizes that the exercise is in progress, . As shown in FIG. 4, when the acceleration values of X, Y, and Z measured by the acceleration sensor 510 exceed a predetermined threshold value, the gyroscope sensor 520 confirms the measured value. If the X, Y, and Z angular values of the gyroscope sensor 520 also exceed the preset threshold value, the exercise condition is determined and the tuning interval of the tuning device 300 is shortened to increase the heart rate of the patient. If only the acceleration sensor 510 has exceeded the threshold value, the central control device 400 does not determine the motion state and maintains the tuning interval of the tuning device 300 in its original state.

In addition, the central control unit 400 determines the intensity of the exercise according to the degree of exceedance of the threshold value, allows the tuning interval of the tuning device 300 to be controlled step by step according to the intensity of exercise, Control can be performed.

Also, since the threshold value is different for each individual and the standard of heart rate required is different according to the health state, it is preferable that the threshold value is set as information obtained through the actual exercise process of the patient.

While the present invention has been described with reference to the exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

10: Lead wire
20: Heartbeat generator
100: Power supply
200: sensing device
300: Tuning device
400: Central control unit
500:
510: Accelerometer
520: Gyroscope sensor

Claims (6)

The sensing device 200 and the tuning device 300 are connected to the lead wire 10 and the lead wire 10, which are inserted into the heart of the patient and have electrodes formed at the ends thereof, And a heart controller (20) including a central controller (400) for receiving the signal of the sensing device (200) and controlling the tuning device (300) so that accurate electric stimulation can be performed,
The central controller 400 receives the sensed exercise information of the movement detector 500 and transmits the sensed exercise information to the coordinator 300. The controller 400 controls the operation of the tuning device 300, To be controlled,
The acceleration sensor unit 500 includes an acceleration sensor 510 for sensing information on a moving speed and a vibration of a patient and a gyroscope sensor 520 for sensing information about a rotation angle of the patient, The sensor 510 and the gyroscope sensor 520 are made up of information on the X, Y, and Z axes of the patient,
The central control device (400)
After setting the threshold values of the acceleration sensor 510 and the gyroscope sensor 520,
When the acceleration values of X, Y and Z measured by the acceleration sensor 510 exceed the set threshold value, the gyroscope sensor 520 confirms the measured values and then the X, Y, and Z values of the gyroscope sensor 520, If the angle value of Z also exceeds the set threshold value, it is determined that the exercise condition is satisfied and the tuning interval of the tuning device 300 is shortened to increase the heart rate of the patient. If only the acceleration sensor 510 exceeds the threshold value The central control device (400) maintains the tune interval of the tune device (300) in a circular state without judging the motion state.
delete delete delete The method according to claim 1,
Wherein the exercise intensity is determined according to the degree of excess of the threshold value, and the tune interval is controlled step by step according to the exercise intensity.
The method according to claim 1,
Wherein the threshold value is set as information obtained through an actual exercise process of the patient,

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