Defibrillator

Abstract

To provide a defibrillator that enables rapid and accurate setting operation of electric energy.SOLUTION: A defibrillator includes a dial type selector, a direction type selector, and an energy control unit that controls defibrillation energy on the basis of a combination of operations of the dial type selector and the direction type selector.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure relates to defibrillators. [Background technology]

[0002] A defibrillator is a medical device that delivers an electric shock to the heart to restore a normal sinus rhythm to a heart that is in atrial or ventricular fibrillation. There are two types of defibrillation: external defibrillation and intracardiac defibrillation.

[0003] External defibrillation is achieved by applying electrical energy to external paddles or pads (hereafter referred to as "paddles / pads"), whereas intracardiac defibrillation is achieved by applying electrical energy to an intracardiac defibrillation catheter.

[0004] Intracardiac defibrillation will be explained. In ablation treatment of atrial fibrillation, atrial fibrillation, atrial flutter, or atrial tachycardia may occur as a spontaneous attack during surgery. Intracardiac defibrillation is a method of removing fibrillation by applying electrical energy to the heart via an intracardiac defibrillation catheter that has been placed in the heart in advance when atrial fibrillation that occurs during surgery needs to be stopped by electrical defibrillation.

[0005] Intracardiac defibrillation has the advantage that it requires less electrical energy to be delivered to the patient than external defibrillation (for example, external defibrillation requires around 150-200 J, while intracardiac defibrillation requires less than 30 J), which places a smaller burden on the patient.

[0006] An intracardiac defibrillation system is described in, for example, Patent Document 1. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2017-176351 A Summary of the Invention [Problem to be solved by the invention]

[0008] Incidentally, when performing intracardiac defibrillation, it is necessary for a medical professional such as a doctor to set the electrical energy to be applied to a patient. For example, in Patent Document 1, this electrical energy is set by operating an output setting dial. In another example, the electrical energy is set based on the number of times a button is pressed.

[0009] Here, it is necessary to set the electrical energy in the defibrillator as quickly as possible and without making any mistakes, but conventional configurations have not been able to fully meet this requirement.

[0010] The present disclosure has been made in consideration of the above points, and provides a defibrillator that allows for rapid and accurate setting of electrical energy. [Means for solving the problem]

[0011] One aspect of the defibrillator of the present disclosure comprises: A dial selector and A directional selector, an energy control unit that controls defibrillation energy based on a combination of operations of the dial selector and the directional selector; Equipped with. Effect of the Invention

[0012] According to the present invention, a defibrillator capable of quickly and accurately setting the electrical energy can be realized. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a perspective view showing an external configuration of a defibrillator according to an embodiment; [Diagram 2] FIG. 1 is a perspective view showing an external configuration of a defibrillator according to an embodiment; [Diagram 3]Enlarged view of the dial selector and its surroundings [Figure 4] FIG. 1 is a block diagram showing a configuration of a main part of an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings.

[0015] Fig. 1 and Fig. 2 are perspective views showing the external configuration of a defibrillator 100 according to an embodiment. Fig. 1 is a perspective view of the defibrillator 100 as seen obliquely from the front, and Fig. 2 is a perspective view of the defibrillator 100 as seen obliquely from the rear. Fig. 3 is an enlarged view of the vicinity of a dial-type selector. Fig. 4 is a block diagram showing the main configuration of an embodiment.

[0016] Defibrillator 100 has an intracardiac defibrillation function, an external defibrillation function, and a monitor function. An intracardiac defibrillation catheter for performing intracardiac defibrillation and an external paddle / pad for performing external defibrillation can be connected to defibrillator 100. Defibrillator 100 generates electrical energy (i.e., defibrillation energy) by charging a capacitor (not shown). This generated electrical energy is supplied to an intracardiac defibrillation catheter to perform intracardiac defibrillation, and is supplied to an external paddle / pad to perform external defibrillation.

[0017] As shown in FIG. 1, the defibrillator 100 is provided with a display 1, various function keys 2, a lead switching key 3, a print key 4, an alarm sound pause key 5, a directional selector (a cross key in the present embodiment) 6, an AC power LED 7, a battery charging LED 8, a speaker 9, a synchronization button 10, an energy output connector 11, a shock button 12, a charging button 13, a dial selector 14, a recorder 15, an SD card slot 16, a status indicator 17, and a microphone 18.

[0018] As shown in FIG. 2, the defibrillator 100 is also provided with a paddle holder 19, a battery box 20, an AC inlet 21, an ECG connector 22, an RS-232C port connector 23, an analog output connector 24, and a test electrode 25.

[0019] 4, the electrical energy generated for intracardiac defibrillation or external defibrillation is output to an intracardiac defibrillation catheter 200 or an external paddle / pad 300, respectively, via an energy output connector 11. In this embodiment, the intracardiac defibrillation catheter 200 is connected to the energy output connector 11 via a box unit (not shown) for intracardiac defibrillation.

[0020] Next, the operation of the defibrillator 100 will be described.

[0021] A user such as a medical professional can use the dial selector 14 to set the mode and electrical energy of the defibrillator 100. The dial selector 14 has a rotary switch and outputs a signal indicating the rotation position. When the dial position of the dial selector 14 is rotated counterclockwise from the "off" position shown in FIG. 3 to the "AED" position, the defibrillator 100 enters the AED (Automated External Defibrillator) mode (i.e., external defibrillation mode). In the AED mode, the defibrillator 100 automatically analyzes an electrocardiogram, determines whether or not an electrical shock is necessary, and charges the device with electrical energy. In the AED mode, a guidance function is activated to instruct operations by screen messages and voice messages.

[0022] Furthermore, when the dial position of dial selector 14 is rotated clockwise from the "off" position shown in Fig. 3, defibrillator 100 switches the operating mode and sets the electrical energy according to the rotation position. Specifically, when the dial position is set to the "monitor" position, defibrillator 100 enters a monitor mode in which an electrocardiogram waveform is monitored. On the other hand, when the dial position is set to the "pacing" position, defibrillator 100 enters a pacing mode.

[0023] When the dial position is further rotated clockwise to reach a number area, the defibrillator 100 sets the electrical energy according to that number.

[0024] Here, the defibrillator 100 selects whether to perform intracardiac defibrillation or external defibrillation based on whether an intracardiac defibrillation catheter 200 or an external paddle / pad 300 is connected to the energy output connector 11. In reality, the defibrillator 100 determines which is connected to the energy output connector 11 based on the difference between the resistance value of the connector of the cable of the intracardiac defibrillation catheter 200 and the resistance value of the connector of the cable of the external paddle / pad 300, and executes the intracardiac defibrillation mode when an intracardiac defibrillation catheter is connected, and executes the external defibrillation mode when an external paddle / pad is connected.

[0025] In the intracardiac defibrillation mode, even if an energy greater than 30 [J] is set, the defibrillator 100 limits the upper limit to 30 [J]. In other words, when the dial is operated with an intracardiac defibrillation catheter connected to the energy output connector 11, if the dial position is in the range of 1 to 30 [J], that value is output, and if the dial position is in the range of 40 [J] or more, the value is limited to 30 [J]. On the other hand, when the dial is operated with an external paddle / pad connected to the energy output connector 11, electrical energy in the range of 0 to 200 [J] according to the dial position is output.

[0026] Furthermore, when the dial position of dial selector 14 is in the number area, defibrillator 100 sets the electrical energy based on the operation signal from directional selector 6 in addition to the operation position of dial selector 14. That is, in this embodiment, defibrillation energy is set based on a combination of the operations of dial selector 14 and directional selector 6.

[0027] A more specific explanation will be given below. For example, when the dial position of the dial selector 14 is set to "20" and the down key of the directional selector 6 is pressed, the value is subtracted by 1 for each press. For example, when the down key is pressed three times, the set value of the electric energy is set to 20-3=17 [J].

[0028] In this manner, in defibrillator 100 of the present embodiment, the dial selector 14 is assigned to set a rough value of the electric energy, and the directional selector 6 is assigned to set a fine value of the electric energy. In other words, the unit setting value of the electric energy that can be set by the directional selector 6 is smaller than the unit setting value of the electric energy that can be set by the dial selector 14.

[0029] This allows the user to quickly and accurately set the electrical energy.

[0030] The directional selector 6 is assigned to energy setting when the operation position of the dial selector 14 is the energy setting position, and is assigned to other settings such as setting an item when the operation position of the dial selector 14 is other than the energy setting position. This eliminates the need to provide a directional selector dedicated to setting the electric energy, thereby preventing the device from becoming larger.

[0031] As a comparative example, consider a case where the numerical values ​​of the dial selector 14 are incremented by 1 [J] and the electric energy is set only by the dial selector 14. In this case, it is necessary to display a large number of scales within a limited display area, which has the disadvantage that it is difficult for the user to visually recognize the numerical display. In addition, due to the structure, it is necessary to stop the dial at all numerical values. Therefore, it is necessary to make the operation feel (click feeling) of the dial light, and as a result, there is a risk that the user will mistakenly turn the dial to a value larger than the intended electric energy.

[0032] In particular, intracardiac defibrillation has the advantage of being able to perform defibrillation with a small electrical energy, which places a small burden on the patient (less damage to the myocardium); however, if an energy level higher than the intended energy level is set, this advantage is reduced.

[0033] In contrast, in this embodiment, detailed settings are assigned to the directional selector 6, so that rough settings can be made with the dial selector 14. Therefore, since the dial selector 14 can be configured to stop at rough rotation positions, such as in increments of 10 [J], making the clicking sensation stronger does not burden the operation. Therefore, the user can accurately stop the rotation position of the dial selector 14 at a position that does not exceed the desired position.

[0034] For example, as described above, when setting the electric energy to 17 [J], the user first adjusts the dial position of the dial selector 14 to the "20" position. At this time, the dial selector 14 has a strong clicking sensation, which prevents the user from erroneously rotating the dial to a position of 30 [J] or more, which exceeds 20 [J]. In this state, the user presses the down key of the directional selector 6 three times to set the electric energy setting value to 20-3=17 [J]. The current setting value is displayed on the display unit 1, and the user sets the value while looking at this display. For example, when the dial position is adjusted to the "20" position, "20" is displayed on the display unit 1, and the value displayed on the display unit 1 changes according to the operation of the directional selector 6.

[0035] Here, in the case of this embodiment, when the dial position of dial selector 14 is set to "20", it is not possible to set a value higher than this by operating directional selector 6. In other words, operation of the up key on directional selector 6 to a value higher than the value set by dial selector 14 is invalid. This makes it impossible to set an electrical energy value higher than the value selected by dial selector 14, and as a result, it is possible to prevent a user from mistakenly setting a high electrical energy value.

[0036] In addition, it is impossible to set a value below 15 by operating the directional selector 6. This makes it impossible to set an electric energy value smaller than the range of values ​​selected by the dial selector 14, and as a result, it is possible to prevent the user from accidentally setting an electric energy value that is too small.

[0037] In this embodiment, when the dial position of dial selector 14 is set to "20", the electrical energy can be set from "16" to "20" in accordance with the operation of directional selector 6, but this is not limiting, and when the dial position of dial selector 14 is set to "20", the electrical energy can be set from "20" to "29" in accordance with the operation of directional selector 6. That is, in the embodiment, the numerical value indicated by the dial position of dial selector 14 is set as the upper limit of the electrical energy that can be set by directional selector 6, but the numerical value indicated by the dial position of dial selector 14 may be set as the lower limit of the electrical energy that can be set by directional selector 6.

[0038] In short, the range of values ​​that can be set by the directional selector 6 should not exceed the range of values ​​selected by the dial selector 14. This is based on the inventor's insight that setting by a dial is less likely to result in a setting error than setting by the number of times a push button is pressed.

[0039] FIG. 4 is a block diagram showing a configuration of a main part of the embodiment.

[0040] The energy control unit 110 receives dial position information from the dial selector 14 and an operation signal from the directional selector 6, and sets the electric energy based on these. The energy control unit 110 controls the generation of electric energy by the energy generation unit 130 so that the set electric energy is output.

[0041] As described above, the energy control unit 110 determines whether the intracardiac defibrillation catheter 200 or the external paddle / pad 300 is connected to the energy output connector 11, and executes the intracardiac defibrillation mode when the intracardiac defibrillation catheter is connected, and executes the external defibrillation mode when the external paddle / pad is connected. Specifically, in the intracardiac defibrillation mode, even if energy greater than 30 [J] is set, the energy control unit 110 limits the upper limit to 30 [J]. On the other hand, in the external defibrillation mode, the energy generation unit 120 controls the energy generation unit 120 to generate electric energy in the range of 0 to 200 [J] according to the dial position.

[0042] Specifically, the energy supply unit 120 is configured by a battery and an AC inlet 21. The electric energy of the energy supply unit 120 is supplied to the energy generation unit 130 at the timing when the charge button 13 is pressed.

[0043] Specifically, the energy generating unit 130 is composed of a boost circuit, a capacitor, a resistor, a connection switch, etc. The state of the connection switch of the energy generating unit 130 is controlled by the energy control unit 110, thereby controlling the electrical energy generated by the energy generating unit 130. After the shock button 12 is pressed, the electrical energy generated by the energy generating unit 130 is output to the intracardiac defibrillation catheter 200 or the external paddle / pad 300 via the energy output connector 11.

[0044] As described above, this embodiment is provided with dial selector 14, directional selector 6, and energy control unit 110 that controls defibrillation energy based on a combination of the operations of dial selector 14 and directional selector 6. This makes it possible to realize defibrillator 100 that can quickly and accurately set the electrical energy.

[0045] Furthermore, according to this embodiment, the unit setting value that can be set by the directional selector 6 (1 [J] in this embodiment) is smaller than the unit setting value that can be set by the dial selector 14 (5 [J], 10 [J], etc. in this embodiment). This allows rough settings to be assigned to the dial selector 14 and fine settings to be assigned to the directional selector 6, thereby simplifying the display and structure of the dial selector 14. Also, the clicking sensation of the dial selector 14 can be made stronger, which can reduce erroneous operation of the dial selector 14 by the user.

[0046] Furthermore, according to this embodiment, the set value that can be set by the directional selector 6 is equal to or lower than the set value set by the dial selector 14. In other words, the user cannot increase the set value by the directional selector 6 beyond the range of values ​​set by the dial selector 14. This makes it possible to prevent the user from erroneously operating the directional selector 6 to set an electrical energy value higher than the desired value. This configuration is effective even when the shock button 12 is pressed to perform defibrillation after setting an electrical energy as in the embodiment, but is particularly effective in that it can reliably prevent electrical energy more than necessary from being applied to the patient when the electrical energy value is changed while electrical stimulation is being performed.

[0047] The above-described embodiment is merely an example of the embodiment of the present invention, and the technical scope of the present invention should not be interpreted as being limited by the embodiment. In other words, the present invention can be embodied in various forms without departing from the gist or main characteristics of the present invention.

[0048] In the above embodiment, the defibrillator 100 has a function as an external defibrillator in addition to a function as an intracardiac defibrillator, but the configuration of the present disclosure may be applied to a defibrillator that does not have an external defibrillation function but has an intracardiac defibrillation function. In particular, in intracardiac defibrillation, the electrical energy needs to be set with finer accuracy than in external defibrillation, and therefore the configuration of the present disclosure is effective.

[0049] The dial selector of the above embodiment may essentially be any selector capable of selecting intermittent positions corresponding to intermittent numerical values, and may be, for example, a slide or lever type selector that stops at intermittent positions. The directional selector of the above embodiment may essentially be any selector capable of controlling the increase / decrease of a numerical value by a touch operation. [Industrial Applicability]

[0050] The present disclosure is generally useful in defibrillators that deliver user-defined electrical energy to a patient. [Explanation of symbols]

[0051] 6-way selector 11 Energy output connector 12 Shock Button 13 Charging button 14 Dial selector 100 Defibrillator 110 Energy Control Unit 200 Intracardiac defibrillation catheter 300 External Paddles / Pads

Claims

1. A dial selector and A directional selector, an energy control unit that controls defibrillation energy based on a combination of operations of the dial selector and the directional selector; A defibrillator comprising:

2. a unit setting value that can be set by the directional selector is smaller than a unit setting value that can be set by the dial selector; 2. The defibrillator of claim 1.

3. A setting value that can be set by the directional selector is within a range of setting values ​​set by the dial selector.

2. The defibrillator of claim 1.

4. The dial selector is capable of selecting discrete positions corresponding to discrete numerical values, The directional selector can control the increase / decrease of a numerical value by a touch operation.

2. The defibrillator of claim 1.

5. the directional selector is assigned to an energy setting when the dial selector is in an energy setting position, and is assigned to another setting when the dial selector is in a position other than the energy setting position; 2. The defibrillator of claim 1.

6. The defibrillation energy is electrical energy for performing intracardiac defibrillation, and is output to an intracardiac defibrillation catheter.

6. A defibrillator according to any one of claims 1 to 5.

7. The defibrillation energy is electrical energy for performing intracardiac defibrillation and external defibrillation, and is selectively output to either an intracardiac defibrillation catheter or an external paddle / pad.

6. A defibrillator according to any one of claims 1 to 5.

8. A defibrillator capable of switching between an external defibrillation mode and an intracardiac defibrillation mode, A dial selector and A directional selector, an energy control unit that controls defibrillation energy based on a combination of operations of the dial selector and the directional selector; A defibrillator comprising:

9. when the dial selector is rotated in a first direction, the external defibrillation mode is selected, and when the dial selector is rotated in a second direction different from the first direction, the intracardiac defibrillation mode is selected.

9. The defibrillator of claim 8.

10. A connector to which an intracardiac defibrillation catheter and an external paddle / pad are connected, the energy control unit controls the defibrillation energy based on a connection state of the intracardiac defibrillation catheter and the external paddles / pads to the connector, and further limits the defibrillation energy to a threshold value or less when the intracardiac defibrillation catheter is connected to the connector.

9. The defibrillator of claim 8.

11. the energy control unit determines the connection state based on resistance values ​​of connectors of the intracardiac defibrillation catheter and the external paddles / pads connected to the connector; 11. The defibrillator of claim 10.

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