DEFIBRILLATION SYSTEM, POWER SUPPLY DEVICE, SWITCHING DEVICE, AND CONNECTION STATE SWITCHING CONTROL METHOD

Abstract

To provide a defibrillation system, etc. capable of improving convenience.SOLUTION: A defibrillation system includes: a power supply device for supplying power to a defibrillation catheter for executing electric defibrillation; and a switching unit for switching the connection state between an electrode catheter and cardiac potential equipment. The electrode catheter is provided separately from the defibrillation catheter. In the cardiac potential equipment, the cardiac potential measured by using the defibrillation catheter or the electrode catheter is displayed. The power supply device includes a power supply unit for outputting the power, and a switching control unit for executing switching control for the switching unit so that the electrode catheter and the cardiac potential equipment are interrupted during a defibrillation execution period.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a defibrillation system, a power supply device, a switching device, and Switching connection status It relates to a control method. [Background technology]

[0002] A defibrillation system (defibrillation catheter system) has been disclosed as one type of medical device for removing atrial fibrillation (performing electrical defibrillation) that occurs during cardiac catheterization (for example, Patent Document 1). The defibrillation system includes a defibrillation catheter that is inserted into the cardiac cavity to perform defibrillation, and a power supply device that supplies power to the defibrillation catheter during defibrillation. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] WO2019 / 155941 publication Summary of the Invention [Problem to be solved by the invention]

[0004] In general, there is a demand for improved convenience when using defibrillation systems and the like. Switching connection status It is desirable to provide a method of control. [Means for solving the problem]

[0005] A defibrillation system according to an embodiment of the present disclosure includes a power supply device that supplies power to a defibrillation catheter that performs electrical defibrillation, and a switching unit that switches a connection state between the electrode catheter and a cardiac potential device. The electrode catheter is provided separately from the defibrillation catheter. , electricThe cardiac potential measured using the electrode catheter is displayed. The power supply device has a power supply section that outputs the power, and a switching control section that performs switching control on the switching section so that the electrode catheter and the cardiac potential device are disconnected during the execution of defibrillation.

[0006] A power supply device according to an embodiment of the present disclosure includes a power supply unit that supplies power to a defibrillation catheter that performs electrical defibrillation, a switching unit that switches the connection state between the electrode catheter and the cardiac potential device, and a switching control unit that controls the switching unit so that the electrode catheter and the cardiac potential device are disconnected during the execution of defibrillation. The electrode catheter is provided separately from the defibrillation catheter. , electric A display of cardiac potentials measured using a polar catheter is provided.

[0007] The switching device according to an embodiment of the present disclosure is a device provided separately from a power supply device that supplies power to a defibrillation catheter that performs electrical defibrillation, and includes a switching unit that switches a connection state between the electrode catheter and a cardiac potential device. The electrode catheter is provided separately from the defibrillation catheter. , electric The cardiac potential measured using the electrode catheter is displayed. The above-mentioned connection state switching control is performed so that the connection between the electrode catheter and the cardiac potential device is cut off during the execution of defibrillation.

[0008] According to one embodiment of the present disclosure Switching connection status The control method is A method for controlling switching of a connection state between an electrode catheter provided separately from a defibrillation catheter that performs electrical defibrillation and a cardiac potential device that displays a cardiac potential measured using the electrode catheter, comprising: During the defibrillation period, the electrode catheter and the cardiac potential device are disconnected from each other. The switching control unit Controls the switching of connection states. [Brief description of the drawings]

[0009] [Figure 1] 1 is a block diagram illustrating an example of the overall configuration of a defibrillation system according to an embodiment of the present disclosure. [Diagram 2] FIG. 2 is a schematic diagram illustrating an example of a schematic configuration of the defibrillation catheter shown in FIG. [Figure 3A] 4 is a flowchart illustrating an example of a defibrillation process according to an embodiment. [Figure 3B] 3B is a flowchart showing an example of a defibrillation process subsequent to FIG. 3A. [Figure 4] 3B is a block diagram illustrating an example of an operating state during the impedance measurement illustrated in FIG. 3A. FIG. [Diagram 5] 3B is a block diagram illustrating an example of an operating state during cardiac potential measurement (before defibrillation is performed) illustrated in FIG. 3A. FIG. [Figure 6] FIG. 3C is a block diagram that illustrates a schematic example of an operating state during the defibrillation execution period illustrated in FIG. 3B. [Figure 7] FIG. 3C is a circuit diagram showing a schematic example of a detailed operating state during the execution of defibrillation shown in FIG. 3B. [Figure 8] 3C is a block diagram illustrating an example of an operating state during cardiac potential measurement (after defibrillation) illustrated in FIG. 3B. FIG. [Figure 9] FIG. 2 is a block diagram illustrating an example of the overall configuration of a defibrillation system according to a first modified example. [Figure 10] FIG. 11 is a block diagram illustrating an example of the overall configuration of a defibrillation system according to a second modification. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. The description will be made in the following order. 1. Embodiment (Example in which the first switching unit is built into the power supply device and the second switching unit is provided externally) 2. Variations Modification 1 (Example in which both the first switching unit and the second switching unit are built into the power supply device) Modification 2 (Example in which both the first switching unit and the second switching unit are provided outside the power supply device) 3. Other Modifications

[0011] <1. Preferred embodiment> [Overall configuration] FIG. 1 is a schematic block diagram showing an example of the overall configuration of a defibrillation system 6 according to an embodiment of the present disclosure. The defibrillation system 6 is a system used to eliminate (perform electrical defibrillation) atrial fibrillation occurring in a patient 9 during, for example, cardiac catheterization. Switching connection status The "control method" is embodied in the defibrillation system of the present disclosure, and will be described below.

[0012] As shown in Fig. 1, the defibrillation system 6 includes a defibrillation catheter 1a, an electrode catheter 1b, a power supply device 2, and a switching device 3. When performing defibrillation using the defibrillation system 6, for example, the electrocardiograph 4 and the electrocardiogram display device 5 (waveform display device) shown in Fig. 1 are also used as appropriate.

[0013] The electrocardiograph 4 and the electrocardiogram display device 5 correspond to a specific example of a "cardiac potential device" in the present disclosure.

[0014] (A. Defibrillation Catheter 1a) The defibrillation catheter 1a is an electrode catheter that is inserted into the body (cardiac cavity) of a patient 9 through a blood vessel to perform electrical defibrillation. Fig. 2 shows a schematic configuration example of the defibrillation catheter 1a. The defibrillation catheter 1a has a shaft 11 (catheter shaft) as a catheter body, and a handle 12 attached to the base end of the shaft 11.

[0015] (Shaft 11) The shaft 11 is made of a flexible tubular structure (tubular member) and extends along its own axial direction (Z-axis direction). The shaft 11 is made of synthetic resin such as polyolefin, polyamide, polyether polyamide, polyurethane, etc. The shaft 11 has a lumen (pore, through hole) formed therein. Various thin wires (conductors, operation wires, etc.) (not shown) are inserted into the lumen while being electrically insulated from each other.

[0016] In the tip region P1 of the shaft 11, for example, as shown in FIG. 2, a plurality of electrodes (tip electrode 110 and ring electrodes 111, 112, 113) are provided. Specifically, one tip electrode 110 and a plurality of ring electrodes 111, 112, 113 are arranged at a predetermined interval in this order from the tip side to the base end side of the shaft 11 along the axial direction (Z-axis direction) of the shaft 11. The ring electrodes 111, 112, 113 are fixedly arranged on the outer circumferential surface of the shaft 11, and the tip electrode 110 is fixedly arranged at the tip end of the shaft 11. As shown in FIG. 2, an electrode group 111G is formed by a plurality of ring electrodes 111 arranged at intervals from each other. Similarly, an electrode group 112G is formed by a plurality of ring electrodes 112 arranged at intervals from each other, and an electrode group 113G is formed by a plurality of ring electrodes 113 arranged at intervals from each other.

[0017] In this context, the term "electrode group" refers to a collection of multiple electrodes that constitute the same pole (have the same polarity) or have the same purpose and are attached at close intervals (for example, 5 mm or less).

[0018] The ring electrodes 111, 112, and 113 are each electrically connected to the handle 12 via a plurality of conductors (lead wires) inserted into the lumen of the shaft 11. Although details will be described later, a cardiac potential signal Sc1 measured using the ring electrodes 111, 112, and 113 is output to the power supply device 2 side via the conductors (see FIG. 1). Meanwhile, in this example, no conductors are connected to the tip electrode 110. However, conductors may also be connected to the tip electrode 110.

[0019] The tip electrode 110 and the ring electrodes 111, 112, 113 are each made of a metal material with good electrical conductivity, such as aluminum (Al), copper (Cu), stainless steel (SUS), gold (Au), platinum (Pt), etc., or various resin materials.

[0020] The electrode group 111G is composed of a plurality of ring-shaped electrodes 111 that constitute the same pole (negative pole or positive pole). The number of ring-shaped electrodes 111 that constitute the electrode group 111G varies depending on the width and arrangement interval of the electrodes, and is, for example, 4 to 13, and preferably 8 to 10. The width (axial length) of the ring-shaped electrodes 111 is preferably, for example, about 2 to 5 mm, and a suitable example is 4 mm. The attachment interval (the distance between adjacent electrodes) of the ring-shaped electrodes 111 is preferably, for example, about 1 to 5 mm, and a suitable example is 2 mm. When the defibrillation catheter 1a is used (placed in the cardiac cavity), the electrode group 111G is located, for example, in the coronary vein.

[0021] The electrode group 112G is composed of a plurality of ring-shaped electrodes 112 that constitute the electrode group 111G with the polarity (positive or negative) opposite to that of the electrode group 111G. The number of ring-shaped electrodes 112 that constitute the electrode group 112G varies depending on the width and the arrangement interval of the electrodes, and is, for example, 4 to 13, and preferably 8 to 10. The width (axial length) of the ring-shaped electrodes 112 is preferably, for example, about 2 to 5 mm, and a suitable example is 4 mm. The attachment interval (the distance between adjacent electrodes) of the ring-shaped electrodes 112 is preferably, for example, about 1 to 5 mm, and a suitable example is 2 mm. When the defibrillation catheter 1a is used, the electrode group 112G is located, for example, in the right atrium.

[0022] 2, the electrode group 113G is composed of four ring-shaped electrodes 113. The width (axial length) of the ring-shaped electrodes 113 is preferably, for example, about 0.5 to 2.0 mm, and a suitable example is 1.2 mm. The attachment interval (the distance between adjacent electrodes) of the ring-shaped electrodes 113 is preferably, for example, about 1.0 to 10.0 mm, and a suitable example is 5 mm. When the defibrillation catheter 1a is in use, the electrode group 113G is located, for example, in the superior vena cava where abnormal potential is likely to occur.

[0023] (Handle 12) The handle 12 has a handle body 121 (grip portion) and a rotating plate 122 .

[0024] The handle body 121 is a portion that is grasped (held) by an operator (doctor) when using the defibrillation catheter 1a. Inside the handle body 121, the various thin wires (the conducting wires, the operating wires, etc.) described above are drawn out from inside the shaft 11 while being electrically insulated from each other.

[0025] The rotating plate 122 is a member that is operated when bending the vicinity of the tip of the shaft 11. For example, the rotating plate 122 can be rotated (rotating operation) along the direction indicated by the arrow d1 in FIG.

[0026] (B. Electrode Catheter 1b) The electrode catheter 1b is a catheter used when performing electrical defibrillation using the defibrillation catheter 1a, and is provided separately from the defibrillation catheter 1a.

[0027] The electrode catheter 1b, like the defibrillation catheter 1a, has a shaft with an electrode near the tip and a handle attached to the base end of the shaft. As will be described in detail later, a cardiac potential signal Sc2 measured using an electrode on the shaft of the electrode catheter 1b is output to a switching device 3 (described later) via a predetermined conductor (see FIG. 1).

[0028] (C. Power supply 2) The power supply device 2 supplies power to the defibrillation catheter 1a. As shown in Fig. 1, the power supply device 2 has an input unit 21, a power supply unit 22, an internal circuit 24, a switching unit 31, a display unit 25, and an audio output unit 26. In addition, as will be described in detail later, the power supply device 2 is capable of switching among multiple (three) modes: a "cardiac potential measurement mode," an "impedance measurement mode," and a "defibrillation mode."

[0029] The "cardiac potential measurement mode" is a mode in which cardiac potential measurement is performed using the defibrillation catheter 1a or the electrode catheter 1b described above. The "impedance measurement mode" is a mode in which measurement processing of impedance Z, which will be described later, is performed using the defibrillation catheter 1a. The "defibrillation mode" is a mode in which electrical defibrillation is performed using the defibrillation catheter 1a.

[0030] (Input section 21, power supply section 22) The input unit 21 is a part that outputs various set values ​​or instruction signals (operation signals Sin) for instructing a predetermined operation. The operation signals Sin are output from the input unit 21 to the internal circuit 24 in response to the operation of a button (switch) or the like by an operator (e.g., an engineer) of the power supply device 2. However, the various set values ​​may not be input in response to an operation by an operator, but may be set in advance in the power supply device 2, for example, at the time of product shipment.

[0031] Examples of the switches include a mode changeover switch for switching between the multiple modes described above, an applied energy setting switch for setting the electrical energy (DC voltage Vdc) to be applied during defibrillation, a charging switch for charging the power supply unit 22, and an energy application switch (discharge switch) for applying electrical energy to perform defibrillation.

[0032] The power supply unit 22 outputs power (the above-mentioned DC voltage Vdc) to the electrode groups 111G, 112G (ring electrodes 111, 112) of the defibrillation catheter 1a under the control of the internal circuit 24. The power supply unit 22 is configured using a predetermined power supply circuit (e.g., a switching regulator, etc.), a capacitor (capacitive element) for charging electrical energy, etc.

[0033] (internal circuit 24) The internal circuit 24 is a part that controls the entire power supply device 2 and performs predetermined arithmetic processing, and is configured using, for example, a microcomputer. The internal circuit 24 controls the operations of the power supply unit 22, switching units 31 and 32 (described later), the display unit 25, and the audio output unit 26. As shown in FIG. 1, the internal circuit 24 has an output circuit 241, a storage unit 242, an impedance measurement circuit 243, and a switching control unit 244.

[0034] The output circuit 241 outputs the DC voltage Vdc output from the power supply unit 22 to the defibrillation catheter 1a (electrode groups 111G, 112G) via a switching unit 31 and an output terminal (described later). Specifically, the output circuit 241 outputs the DC voltage Vdc so that the electrode groups 111G, 112G have polarities different from each other (when one electrode group is negative, the other electrode group is positive).

[0035] The storage unit 242 is a part (memory) that holds various data.

[0036] The impedance measuring circuit 243 measures the impedance Z using the defibrillation catheter 1a. Specifically, the impedance measuring circuit 243 measures the impedance Z between the electrode groups 111G and 112G of the defibrillation catheter 1a. The measured value of the impedance Z is input to the impedance measuring circuit 243 via a switching unit 31, which will be described later.

[0037] The switching control unit 244 uses a control signal CTL to perform switching control on switching units 31 and 32, which will be described later. Specifically, the switching control unit 244 performs switching control on the supply paths of the DC voltage Vdc, the cardiac potential signal Sc1, and the impedance Z in the switching unit 31, and also performs switching control on the supply path of the cardiac potential signal Sc2 in the switching unit 32. Details of the switching control by the switching control unit 244 will be described later (FIGS. 3A to 8).

[0038] (Switching unit 31) The switching unit 31 has a relay structure including three contacts 31a to 31c. The contact 31a is electrically connected to the defibrillation catheter 1a via a wire, the contact 31b is electrically connected to the electrocardiograph 4 via a wire, and the contact 31c is electrically connected to the internal circuit 24 via a wire. The switching unit 31 switches the connection state between the defibrillation catheter 1a, the electrocardiograph 4 (and the electrocardiogram display device 5), and the internal circuit 24. Specifically, as will be described in detail later, the connection state is switched in response to a control signal CTL supplied from a switching control unit 244 so that the contact 31a in the switching unit 31 is connected to the contact 31b (electrocardiograph 4 side) or the contact 31c (internal circuit 24 side).

[0039] The switching unit 31 corresponds to a specific example of a "first switching unit" in the present disclosure, and the contact 31a corresponds to a specific example of a "first contact" in the present disclosure.

[0040] (Display unit 25, audio output unit 26) The display unit 25 is a part (monitor) that displays various information and outputs it to the outside.

[0041] The audio output unit 26 is a part that outputs various sounds to the outside based on the audio signal Ss (see FIG. 1) supplied from the internal circuit 24.

[0042] (D. Electrocardiograph 4) The electrocardiograph 4 records information such as cardiac potential signals. In the example of Fig. 1, the electrocardiograph 4 inputs and records a cardiac potential signal Sc1 output from the defibrillation catheter 1a via the above-mentioned switching unit 31 and a cardiac potential signal Sc2 output from the electrode catheter 1b via a switching device 3 (switching unit 32) described later. The cardiac potential signals Sc1 and Sc2 are each output from the electrocardiograph 4 to an electrocardiogram display device 5.

[0043] (E. Electrocardiogram display device 5) The electrocardiogram display device 5 displays a cardiac potential waveform (electrocardiogram) and the like based on the cardiac potential signal (cardiac potential signal Sc1 or cardiac potential signal Sc2) output from the electrocardiograph 4. The electrocardiograph 4 and the electrocardiogram display device 5 are sometimes collectively called a polygraph, a vital sign monitor, a cardiac catheter examination device, or an EP recording system. The cardiac potential waveform and the like displayed on the electrocardiogram display device 5 are monitored at all times by, for example, the operator (doctor) of the defibrillation catheter 1a.

[0044] (F. Switching device 3) The switching device 3 includes a switching section 32. That is, in this embodiment, the switching section 32 described below is provided in the switching device 3 that is provided separately from the power supply device 2.

[0045] The switching unit 32 has a relay structure including three contacts 32a to 32c, similar to the switching unit 31 described above. The contact 32a is electrically connected to the electrode catheter 1b via a wiring, the contact 32b is electrically connected to the electrocardiograph 4 via a wiring, and the contact 31c is not connected to the outside (is cut off from the outside). The switching unit 32 switches the connection state between the electrode catheter 1b (contact 32a) and the electrocardiograph 4 (and the electrocardiogram display device 5). Specifically, as will be described in detail later, the connection state is switched so that the contact 32a in the switching unit 32 is connected to the contact 32b (electrocardiograph 4 side) or the contact 32c in response to a control signal CTL supplied from the switching control unit 244. In other words, the connection state between the electrode catheter 1b and the electrocardiograph 4 (and the electrocardiogram display device 5) is switched so that contact 32a is connected (contacts 32a and 32b are connected to each other) or disconnected (contacts 32a and 32c are connected to each other).

[0046] The switching unit 32 corresponds to a specific example of a "switching unit" and a "second switching unit" in the present disclosure, and the contact 32a corresponds to a specific example of a "second contact" in the present disclosure.

[0047] [Operation and Effects] (A.Basic movement) In the defibrillation system 6, for example, during defibrillation treatment (defibrillation process) during cardiac catheterization, the distal end side of the shaft 11 of the defibrillation catheter 1a is inserted into the body of the patient 9 through a blood vessel (see FIG. 1). At this time, the shape of the vicinity of the distal end region P1 of the shaft 11 inserted into the body of the patient 9 changes in response to the operation of the handle 12 by the operator (doctor) of the defibrillation catheter 1a. Specifically, when the rotating plate 122 is rotated by the operator's finger, for example, along the direction indicated by the arrow d1 in FIG. 2, an operation wire (not shown) within the shaft 11 is pulled toward the base end side. As a result, the vicinity of the distal end region P1 of the shaft 11 is curved along the direction indicated by the arrow d2 in FIG. 2.

[0048] (A-1. Defibrillation treatment) When the above-mentioned defibrillation process is performed, a DC voltage Vdc is supplied as electrical energy for defibrillation from the power supply device 2 (power supply unit 22) to the electrode groups 111G, 112G (ring-shaped electrodes 111, 112) of the defibrillation catheter 1a. Specifically, the output circuit 241 in the power supply device 2 outputs the DC voltage Vdc so that the electrode groups 111G, 112G have mutually different polarities (when one electrode group is negative, the other electrode group is positive). The DC voltage Vdc, which gives the electrode groups 111G, 112G mutually different polarities, is applied as direct electrical energy from the tip region P1 of the defibrillation catheter 1a inserted into the body of the patient 9 to the heart of the patient 9, thereby performing electrical defibrillation.

[0049] The defibrillation treatment using the defibrillation system 6 (defibrillation catheter 1a) has the following advantages over, for example, an AED (Automated External Defibrillator), which is a device that supplies electrical energy from outside the patient's body. That is, first, the electrode groups 111G, 112G of the defibrillation catheter 1a arranged in the cardiac cavity directly apply electrical energy to the fibrillated heart, so that electrical stimulation (electric shock) necessary and sufficient for defibrillation treatment is reliably supplied to the heart. As a result, it is possible to perform defibrillation treatment more effectively (efficiently) than, for example, when the above-mentioned AED is used. In addition, since electrical energy is directly applied to the heart, unlike, for example, when the above-mentioned AED is used, burns are not caused on the surface of the patient 9's body, and therefore, it is possible to reduce the invasiveness of the defibrillation treatment to the patient.

[0050] (A-2. Cardiac potential measurement processing) On the other hand, when measuring the cardiac potential of the patient 9, the cardiac potential (cardiac potential signals Sc1, Sc2) is measured using the defibrillation catheter 1a or the electrode catheter 1b inserted into the body of the patient 9 (see FIG. 1). The measured cardiac potential signals Sc1, Sc2 are input to the electrocardiograph 4 via switching units 31, 32, respectively, and then supplied to the electrocardiogram display device 5 (see FIG. 1). Then, the cardiac potential waveform based on the cardiac potential signals Sc1, Sc2 is displayed on the electrocardiogram display device 5, so that the cardiac potential waveform can be appropriately monitored by the operator (engineer, etc.) of the power supply device 2 or the operator (doctor) of the defibrillation catheter 1a.

[0051] However, in conventional defibrillation systems using a defibrillation catheter and an electrode catheter, there is a problem in that after electrical defibrillation is performed, the cardiac potential measured by the electrode catheter cannot be monitored (cardiac potential waveform cannot be displayed) for a certain period (for example, about 8 [s]). This is because the influence of electrical energy generated from the defibrillation catheter during defibrillation is received by the electrocardiograph and the electrocardiogram display device via the electrode catheter. In this way, in conventional defibrillation systems, there is a period after defibrillation that the cardiac potential cannot be monitored, which may impair convenience when used.

[0052] (B. Details of defibrillation treatment) Therefore, in the defibrillation system 6 of the present embodiment, during the above-mentioned defibrillation process, the switching control unit 244 performs the switching control described below. The defibrillation process (defibrillation treatment) including the switching control will be described in detail below with reference to Figs. 3A to 8.

[0053] 3A and 3B each show an example of a defibrillation process according to the present embodiment in the form of a flow chart. FIG. 4 shows, in a block diagram, a typical example of an operating state during the measurement process of the impedance Z shown in FIG. 3A (see step S15). FIG. 5 shows, in a block diagram, a typical example of an operating state during the measurement process of the cardiac potential shown in FIG. 3A (before defibrillation is performed: see step S18). FIG. 6 shows, in a block diagram, a typical example of an operating state during the execution period of defibrillation shown in FIG. 3B (see steps S23 to S24). FIG. 7 shows, in a circuit diagram, a typical example of a detailed operating state during the execution period of defibrillation shown in FIG. 3B (see steps S23 to S24). FIG. 8 shows, in a block diagram, a typical example of an operating state during the measurement process of the cardiac potential shown in FIG. 3B (after defibrillation is performed: see step S27).

[0054] 3A and 3B, first, when the power supply device 2 is turned on (step S11), the applied energy for defibrillation is set (step S12). Specifically, an operator (such as an engineer) of the power supply device 2 operates the input unit 21 (for example, the above-mentioned applied energy setting switch) to supply an operation signal Sin to the internal circuit 24, thereby setting the applied energy for defibrillation. Note that the applied energy at this time is set in a range of, for example, 1 J (joule) to 30 J in increments of 1 J.

[0055] Next, the operator of the power supply device 2 operates the input unit 21 (for example, operates the mode change switch described above) to supply an operation signal Sin to the internal circuit 24, thereby transitioning to a "defibrillation mode" for performing defibrillation (step S13). Then, the switching control unit 244 uses the control signal CTL to perform switching control on the switching unit 31 so that the connection destination of the contact 31a in the switching unit 31 is switched from the contact 31b side (the electrocardiograph 4 side) to the contact 31c side (the internal circuit 24 side) (step S14). As a result, the defibrillation catheter 1a is connected to the internal circuit 24, and the defibrillation catheter 1a is disconnected from the electrocardiograph 4 (see FIG. 4).

[0056] Next, as shown in Fig. 4, for example, the impedance measuring circuit 243 measures the impedance Z between the electrode groups 111G and 112G of the defibrillation catheter 1a (step S15). That is, the defibrillation system 6 is set to the "resistance measurement mode" described above, thereby measuring the impedance Z. The measured value of the impedance Z is input from the defibrillation catheter 1a to the impedance measuring circuit 243 via the switching unit 31 (contacts 31a and 31c) (see Fig. 4).

[0057] Next, the switching control unit 244 performs switching control on the switching unit 31 using the control signal CTL so that the connection destination of the contact 31a in the switching unit 31 is switched from the contact 31c side (internal circuit 24 side) to the contact 31b side (electrocardiograph 4 side) (step S16). As a result, the connection between the defibrillation catheter 1a and the internal circuit 24 is blocked, and the connection between the defibrillation catheter 1a and the electrocardiograph 4 is established (see FIG. 1).

[0058] Subsequently, the internal circuit 24 in the power supply device 2 determines whether the measured value of the impedance Z falls within a predetermined range defined by predetermined threshold values Zth1 and Zth2 (whether Zth1 < Z < Zth2 is satisfied) (step S17).

[0059] Here, when it is determined that the impedance Z does not fall within the predetermined range (corresponding to Z ≦ Zth1 or Zth2 ≦ Z) (step S17: N), it means that the electrode groups 111G and 112G of the defibrillation catheter 1a are not surely in contact with a predetermined site in the patient 9's body (for example, the wall of the coronary vein or the inner wall of the right atrium). Therefore, in this case, a transition is made to the above-described "electrocardiogram measurement mode" (step S18), and the electrocardiogram measurement process before the execution of defibrillation is performed. Specifically, for example, as shown in FIG. 5, the electrocardiogram signal Sc1 measured using the defibrillation catheter 1a is supplied from the defibrillation catheter 1a to the electrocardiograph 4 (and the electrocardiogram display device 5) via the switching unit 31 (contacts 31a and 31b). Also, the electrocardiogram signal Sc2 measured using the electrode catheter 1b is supplied from the electrode catheter 1b to the electrocardiograph 4 (and the electrocardiogram display device 5) via the switching unit 32 (contacts 32a and 32b). As a result, the electrocardiogram display device 5 displays an electrocardiogram (electrocardiogram waveform) based on the electrocardiogram signals Sc1 and Sc2. Thereafter, the process returns to step S12 described above.

[0060] On the other hand, when it is determined that the impedance Z falls within a predetermined range (satisfying Zth1 < Z < Zth2) (step S17: Y), as described above, it means that the electrode groups 111G and 112G of the defibrillation catheter 1a are surely in contact with a predetermined site in the body of the patient 9. Therefore, in this case, next, the capacitor in the power supply unit 22 of the power supply device 2 is charged with energy (charge) for defibrillation (step S19). Specifically, an operation signal Sin is supplied to the internal circuit 24 by an operation on the input unit 21 by the operator of the power supply device 2 (for example, an operation on the charging switch described above), so that the capacitor in the power supply unit 22 is charged with energy for defibrillation.

[0061] Next, after the completion of the energy charging of the capacitor described above, a transition is made to the standby state for defibrillation (step S20). Specifically, an operation signal Sin is supplied to the internal circuit 24 by an operation on the input unit 21 by the operator of the power supply device 2 (for example, an operation on the energy application switch described above), so that a transition is made to the standby state for defibrillation.

[0062] Then, the switching control unit 244 uses the control signal CTL to perform switching control on the switching unit 31 so that the connection destination of the contact 31a in the switching unit 31 is switched from the contact 31b side (ECG meter 4 side) to the contact 31c side (internal circuit 24 side) (step S21). Thereby, the defibrillation catheter 1a and the internal circuit 24 are connected, and the defibrillation catheter 1a and the ECG meter 4 are disconnected (see FIG. 6).

[0063] Subsequently, the switching control unit 244 uses the control signal CTL to perform switching control on the switching unit 32 so that the connection destination of the contact 32a in the switching unit 32 is switched from the contact 32b side (ECG meter 4 side) to the contact 32c side (step S22). Thereby, the electrode catheter 1b (contact 32a) and the ECG meter 4 (and the electrocardiogram display device 5) are disconnected and enter a disconnected state (see FIG. 6).

[0064] Here, the execution order of the above-mentioned step S21 (switching control for the switching unit 31 before defibrillation is performed) and step S22 (switching control for the switching unit 32 before defibrillation is performed) (see reference symbol P21 in Fig. 3B) may be reversed from the example in Fig. 3B. That is, step S21 (switching control for the switching unit 31 before defibrillation is performed) may be performed after step S22 (switching control for the switching unit 32 before defibrillation is performed).

[0065] Next, defibrillation is started at a predetermined trigger timing (step S23), and the operation shifts to the defibrillation execution period (the above-mentioned "defibrillation mode": see FIG. 6). During this defibrillation execution period, the contact 31a in the switching unit 31 is connected to the contact 31c side (the internal circuit 24 side), so that the DC voltage Vdc output from the power supply unit 22 in the power supply device 2 is supplied to the defibrillation catheter 1a via the output circuit 241 and the switching unit 31 (contacts 31c, 31a) (see FIG. 6). As a result, the DC voltage Vdc is applied as electrical energy between the electrode groups 111G, 112G in the defibrillation catheter 1a, and defibrillation is performed inside the body of the patient 9. On the other hand, during the defibrillation execution period, the contact 32a in the switching unit 32 is connected to the contact 32c side, so that the electrode catheter 1b (contact 32a) and the electrocardiograph 4 (and the electrocardiogram display device 5) are disconnected from each other, as described above. As a result, the cardiac potential signal Sc2 measured using the electrode catheter 1b is no longer input to the electrocardiograph 4 and the electrocardiogram display device 5 (see FIG. 6).

[0066] Here, a detailed example of the operating state during the above-mentioned defibrillation execution period will be described with reference to Fig. 7. Fig. 7(A) shows, in a schematic circuit diagram, an example of the operating state when defibrillation output is made on the "+" side during the defibrillation execution period. Fig. 7(B) shows, in a schematic circuit diagram, an example of the operating state when defibrillation output is made on the "-" side during the defibrillation execution period.

[0067] 7(A) and 7(B), for ease of explanation, some components of the defibrillation system 6 are extracted and partially simplified. Specifically, the power supply unit 22 includes the above-mentioned capacitor (capacitor C). The switching unit 31 includes a relay RL that connects or disconnects the above-mentioned contacts 31a and 31c, and for ease of explanation, the contact 31b on the electrocardiograph 4 side is omitted from the illustration. The output circuit 241 includes, as some of the components within the circuit, four switches SW1 to 4, each configured of, for example, a field effect transistor (FET).

[0068] The switch SW1 is disposed on the wiring connecting the connection points P31 and P32, and the switch SW2 is disposed on the wiring connecting the connection points P32 and P34. The switch SW3 is inserted and disposed on the wiring connecting the connection points P31 and P33, and the switch SW4 is inserted and disposed on the wiring connecting the connection points P33 and P34. The connection point P31 is connected to one end of the capacitor C via a wiring, and the connection point P34 is connected to the other end of the capacitor C via a wiring. A defibrillation catheter 1a is disposed on the wiring between the connection points P32 and P33 via a relay RL.

[0069] Here, in the above-mentioned step S20, when the energy application switch is operated to transition to a standby state for defibrillation after the completion of energy charging of the capacitor C, the relay RL in the switching unit 31 is turned on. As a result, as shown in Figs. 7(A) and 7(B), the internal circuit 241 and the defibrillation catheter 1a are connected (see the above-mentioned step S21). Then, the process transitions to the execution period of defibrillation from the above-mentioned step S23 to the following step S24. In this execution period of defibrillation, in detail, the processes of the following steps S31 to S34 are performed. In other words, the period during which the processes of the following steps S31 to S34 are performed corresponds to one specific example of a "defibrillation execution period" in the present disclosure.

[0070] First, in step S31, as shown in FIG. 7(A), the switches SW1 and SW4 are set to the ON state, and the switches SW2 and SW3 are set to the OFF state. In the initial state, all the switches SW1 to SW4 are set to the OFF state. Then, the defibrillation energy E charged in the capacitor C is circulated from one end of the capacitor C to the other end of the capacitor C via the switch SW1, the relay RL, the defibrillation catheter 1a, and the switch SW4. As a result, the defibrillation energy E is supplied from the power supply unit 22 to the defibrillation catheter 1a, and the defibrillation output is performed on the "+" side.

[0071] Next, in step S32, the switches SW1 and SW4 are each switched from the on state to the off state.

[0072] Next, in step S33, the switches SW2 and SW3 are each switched from the OFF state to the ON state. Then, as shown in Fig. 7(B), the defibrillation energy E charged in the capacitor C circulates from one end of the capacitor C to the other end of the capacitor C via the switch SW3, the relay RL, the defibrillation catheter 1a, and the switch SW2. As a result, the defibrillation energy E is supplied from the power supply unit 22 to the defibrillation catheter 1a in the opposite direction to that in Fig. 7(A) (the opposite direction within the defibrillation catheter 1a), and a defibrillation output is performed on the "-" side.

[0073] In step S34, the switches SW2 and SW3 are each switched from the on state to the off state, and in the following step S24, defibrillation is stopped (the above-mentioned execution period of defibrillation ends). Note that in step S26 (switching control of the switching unit 31 after execution of defibrillation) described later, the relay RL in the switching unit 31 is switched from the on state to the off state.

[0074] Next, after a predetermined time has elapsed, the internal circuit 24 stops the output of the DC voltage Vdc from the power supply unit 22, thereby stopping defibrillation (step S24), and the above-mentioned execution period of defibrillation ends.

[0075] Next, the switching control unit 244 uses the control signal CTL to perform switching control on the switching unit 32 so that the connection destination of the contact 32a in the switching unit 32 is switched from the contact 32c side to the contact 32b side (the electrocardiograph 4 side) (step S25). As a result, the electrode catheter 1b (contact 32a) and the electrocardiograph 4 (and the electrocardiogram display device 5) are connected to each other, resulting in a connected state (see FIG. 8).

[0076] Next, the switching control unit 244 uses the control signal CTL to perform switching control on the switching unit 31 so that the connection destination of the contact 31a in the switching unit 31 is switched from the contact 31c side (the internal circuit 24 side) to the contact 31b side (the electrocardiograph 4 side) (step S26). As a result, the defibrillation catheter 1a is disconnected from the internal circuit 24, and the defibrillation catheter 1a is connected to the electrocardiograph 4 (see FIG. 8).

[0077] Here, the execution order of the above-mentioned step S25 (switching control for the switching unit 32 after defibrillation is performed) and step S26 (switching control for the switching unit 31 after defibrillation is performed) (see reference symbol P22 in Fig. 3B) may be reversed from that in the example of Fig. 3B. That is, step S25 (switching control for the switching unit 32 after defibrillation is performed) may be performed after step S26 (switching control for the switching unit 31 after defibrillation is performed).

[0078] Next, the mode shifts to the "cardiac potential measurement mode" described above, and a process of measuring the cardiac potential after defibrillation is performed (step S27). Specifically, for example, as shown in Fig. 8, a cardiac potential signal Sc1 measured using the defibrillation catheter 1a is supplied from the defibrillation catheter 1a to the electrocardiograph 4 (and the electrocardiogram display device 5) via the switching unit 31 (contacts 31a, 31b). Also, a cardiac potential signal Sc2 measured using the electrode catheter 1b is supplied from the electrode catheter 1b to the electrocardiograph 4 (and the electrocardiogram display device 5) via the switching unit 32 (contacts 32a, 32b). As a result, the cardiac potential (cardiac potential waveform) based on the cardiac potential signals Sc1 and Sc2 is displayed on the electrocardiogram display device 5.

[0079] Thereafter, the power supply device 2 is turned off (step S28), thereby completing the series of defibrillation processes shown in FIGS. 3A and 3B.

[0080] (C. Actions and Effects) In this embodiment, the connection state between the electrode catheter 1b and the electrocardiograph 4 (and the electrocardiogram display device 5) is switched, and during the period in which defibrillation is performed using the defibrillation catheter 1a, the connection state switching control is performed so that the connection between the electrode catheter 1b and the electrocardiograph 4 (and the electrocardiogram display device 5) is disconnected.

[0081] As a result, in this embodiment, unlike the conventional defibrillation system described above, the risk of the electrocardiograph 4 and the electrocardiogram display device 5 being affected by the electrical energy generated from the defibrillation catheter 1a during defibrillation via the electrode catheter 1b is avoided. In other words, in this embodiment, unlike the conventional defibrillation system, it is possible to avoid the occurrence of a period in which the cardiac potential cannot be monitored after defibrillation is performed. As a result, in this embodiment, it is possible to improve the convenience of using the defibrillation system 6 (the power supply device 2 and the switching device 3).

[0082] In particular, in this embodiment, of the switching units 31 and 32, the switching unit 32 is provided in the (external) switching device 3 provided separately from the power supply 2, so that it is possible to obtain, for example, the following effects. That is, since the power supply 2 itself can be left with its existing configuration, the above-mentioned switching control can be realized for the entire defibrillation system 6 simply by providing an external switching device 3 separately, and as a result, it is possible to further improve convenience.

[0083] <2. Modifications> Next, modified examples (modifications 1 and 2) of the above embodiment will be described. Note that the same components as those in the embodiment will be given the same reference numerals, and the description will be omitted as appropriate.

[0084] [Variation 1] (composition) Fig. 9 is a schematic block diagram showing an example of the overall configuration of a defibrillation system 6A according to Modification 1. The defibrillation system 6A of Modification 1 includes a defibrillation catheter 1a, an electrode catheter 1b, and a power supply device 2A. That is, in the defibrillation system 6A, the switching device 3 is not provided (is omitted) and a power supply device 2A is provided instead of the power supply device 2 in the defibrillation system 6 (Fig. 1) of the embodiment, but the other configurations are the same.

[0085] The power supply device 2A has an input unit 21, a power supply unit 22, an internal circuit 24, switching units 31 and 32, a display unit 25, and an audio output unit 26. That is, the power supply device 2A further includes a switching unit 32 in the power supply device 2 (FIG. 1) of the embodiment, but has the same other configuration. In other words, the switching unit 32 that was provided in the switching device 3 in the defibrillation system 6 (FIG. 1) of the embodiment is provided (built-in) in the power supply device 2A in the defibrillation system 6A of the first modification.

[0086] (Action and effect) In the first modification, basically, the same effect as in the embodiment can be obtained by the same action. That is, in the first modification, by performing switching control in the same manner as in the embodiment, it is possible to improve the convenience when using the defibrillation system 6A (power supply device 2A).

[0087] In particular, in the first modification, both switching units 31, 32 are provided within power supply device 2A, which makes it possible to obtain the following effects, for example: By consolidating the two switching functions of switching units 31, 32 within power supply device 2A, an external switching device 3 is not required and the connection wiring between devices is simplified, which makes it possible to simplify the overall configuration of defibrillation system 6A.

[0088] [Variation 2] Fig. 10 is a schematic block diagram showing an example of the overall configuration of a defibrillation system 6B according to Modification 2. The defibrillation system 6B of Modification 2 includes a defibrillation catheter 1a, an electrode catheter 1b, a power supply device 2B, and a switching device 3B. That is, in the defibrillation system 6B, a power supply device 2B is provided instead of the power supply device 2 and a switching device 3B is provided instead of the switching device 3 in the defibrillation system 6 (Fig. 1) of the embodiment, but the other configurations are the same.

[0089] The power supply device 2B has an input unit 21, a power supply unit 22, an internal circuit 24, a display unit 25, and an audio output unit 26. That is, in the power supply device 2B, the switching unit 31 is not provided (is omitted) in the power supply device 2 (FIG. 1) of the embodiment, but the other configurations are the same.

[0090] The switching device 3B has switching units 31 and 32. That is, in the switching device 3B, the switching unit 32 is further provided in the switching device 3 (FIG. 1) of the embodiment, and the other configurations are similar. In other words, the switching unit 32 provided in the power supply device 2 in the defibrillation system 6 (FIG. 1) of the embodiment is provided (built-in) in the switching device 3B in the defibrillation system 6B of the second modification.

[0091] (Action and effect) In the second modification, basically, the same effect as in the embodiment can be obtained by the same action. That is, in the second modification, by performing switching control in the same manner as in the embodiment, it is possible to improve the convenience when using the defibrillation system 6B (power supply device 2B and switching device 3B).

[0092] In particular, in the second modification, since both of the switching units 31 and 32 are provided in the switching device 3B, it is possible to obtain, for example, the following effects: That is, by consolidating the two switching functions of the switching units 31 and 32 in the switching device 3B, it is possible to simplify (reduc) the configuration of the power supply 2B.

[0093] <3. Other Modifications> Although the present disclosure has been described above by giving several embodiments and modified examples, the present disclosure is not limited to these embodiments, and various modifications are possible.

[0094] For example, in the above embodiment, the configuration of the defibrillation catheter 1a is specifically described, but not all of the components are necessarily included, and other components may be included. The configuration of the electrodes in the shaft 11 (the arrangement, shape, number, etc. of the ring-shaped electrodes and the tip electrode) is not limited to those described in the above embodiment. Furthermore, the configuration of each component in the defibrillation catheter 1a (shape, arrangement, material, number, etc.) is not limited to those described in the above embodiment, and may be other shapes, arrangements, materials, numbers, etc. In addition, the values, ranges, magnitude relationships, etc. of the various parameters described in the above embodiment are not limited to those described in the above embodiment, and may be other values, ranges, magnitude relationships, etc.

[0095] In the above embodiment and the like, a defibrillation catheter of a type in which the shape of the shaft 11 near the tip region P1 changes in one direction in response to operation of the handle 12 has been described as an example, but the present disclosure is not limited to this example. That is, the present disclosure can also be applied to a defibrillation catheter of a type in which the shape of the shaft 11 near the tip region P1 changes in both directions in response to operation of the handle 12, in which case multiple operating wires are used. The present disclosure can also be applied to a defibrillation catheter of a type in which the shape of the shaft 11 near the tip region P1 is fixed, in which case operating wires, rotating plate 122, etc. are not required.

[0096] In the above embodiment, each block configuration in the power supply device and the switching device is specifically described, but it is not necessary to include all of the blocks described in the above embodiment, and other blocks may be further included. Furthermore, the defibrillation system as a whole does not necessarily have to include all of the devices described in the above embodiment, and other devices may be further included. Specifically, at least one of the defibrillation catheter 1a and the electrode catheter 1b may not be included in the defibrillation system. Furthermore, for example, at least one of the electrocardiograph 4 and the electrocardiogram display device 5 may be included in the defibrillation system. Furthermore, not only one electrode catheter for measuring cardiac potential signals may be provided, but multiple electrode catheters may be provided.

[0097] In the above embodiment and the like, the configurations of the switching units 31 and 32 have been specifically described, but the present invention is not limited to these examples, and other configurations may be used.

[0098] In the above embodiment etc., the entire defibrillation process including the switching control process for the switching units 31, 32 has been specifically described, but the processing methods for the switching control process and the entire defibrillation process are not limited to the methods described in the above embodiment etc. In other words, the switching control process and the entire defibrillation process may be performed using other methods.

[0099] The series of processes described in the above embodiments may be performed by hardware (circuits) or software (programs). When performed by software, the software is composed of a group of programs for causing a computer to execute each function. Each program may be, for example, pre-installed in the computer and used, or may be installed in the computer from a network or a recording medium and used.

[0100] Furthermore, the various examples described above may be applied in any combination.

[0101] It should be noted that the effects described in this specification are merely examples and are not limiting, and other effects may also be obtained.

[0102] The present disclosure may also have the following configurations. (1) a power supply device that supplies power to a defibrillation catheter that performs electrical defibrillation; A switching unit for switching the connection state between the electrode catheter and the cardiac potential device; Equipped with the electrode catheter is provided separately from the defibrillation catheter; The cardiac potential device displays the cardiac potential measured using the defibrillation catheter or the electrode catheter, The power supply device is A power supply unit that outputs the power; a switching control unit that performs switching control on the switching unit so that the electrode catheter and the cardiac potential device are disconnected during the execution of the defibrillation; A defibrillation system having (2) The power supply device comprises: An internal circuit including the switching control unit; a first switching unit that switches a first contact electrically connected to the defibrillation catheter so that the first contact is connected to the cardiac potential device side or the internal circuit side; and a second switching unit as the switching unit switches a connection state between a second contact electrically connected to the electrode catheter and the cardiac potential device; The switching control unit, during the execution period of the defibrillation, The first contact is connected to the internal circuit to supply the power to the defibrillation catheter; so that the second contact is disconnected from the cardiac potential device. Performing switching control for the first switching unit and the second switching unit A defibrillation system as described in (1) above. (3) After the execution period of the defibrillation, the switching control unit The first contact is connected to the cardiac potential device, A connection is made between the second contact and the cardiac potential device. Performing switching control for the first switching unit and the second switching unit A defibrillation system as described in (2) above. (4) a power supply unit that supplies power to a defibrillation catheter that performs electrical defibrillation; A switching unit for switching a connection state between the electrode catheter and the cardiac potential device; a switching control unit that performs switching control on the switching unit so that the electrode catheter and the cardiac potential device are disconnected during the execution of the defibrillation; Equipped with the electrode catheter is provided separately from the defibrillation catheter; The cardiac potential device displays the cardiac potential measured using the defibrillation catheter or the electrode catheter. power supply. (5) An internal circuit including the switching control unit is provided, The switching unit is a first switching unit that switches a first contact electrically connected to the defibrillation catheter so that the first contact is connected to the cardiac potential device side or the internal circuit side; a second switching unit that switches a connection state between a second contact that is electrically connected to the electrode catheter and the cardiac potential device; Contains The switching control unit, before the execution period of the defibrillation, The first contact is connected to the internal circuit to supply the power to the defibrillation catheter; so that the second contact is disconnected from the cardiac potential device. Performing switching control for the first switching unit and the second switching unit The power supply device according to (4) above. (6) A device provided separately from a power supply device that supplies power to a defibrillation catheter that performs electrical defibrillation, a switching unit for switching a connection state between the electrode catheter and the cardiac potential device, the electrode catheter is provided separately from the defibrillation catheter; The cardiac potential device displays the cardiac potential measured using the defibrillation catheter or the electrode catheter, During the execution of the defibrillation, the connection state is switched so that the electrode catheter and the cardiac potential device are disconnected. Switching equipment. (7) A method for controlling a defibrillation system that performs electrical defibrillation using a defibrillation catheter, comprising: an electrode catheter is provided separately from the defibrillation catheter, and a cardiac potential measured using the defibrillation catheter or the electrode catheter is displayed in a cardiac potential device; During the execution of the defibrillation, a switching control is performed on the connection state between the electrode catheter and the cardiac potential device so that the connection between the electrode catheter and the cardiac potential device is cut off. A method for controlling a defibrillation system. [Explanation of symbols]

[0103] 1a...defibrillation catheter, 1b...electrode catheter, 11...shaft, 110...tip electrode, 111, 112, 113...ring-shaped electrodes, 111G, 112G, 113G...electrode group, 12...handle, 121...handle body, 122...rotating plate, 2, 2A, 2B...power supply device, 21...input section, 22...power supply section, 24...internal circuit, 241...output circuit, 242...storage section, 243...impedance measurement circuit, 244...switching control section, 25...display section, 26...audio output section, 3, 3B ...switching device, 31, 32...switching section, 31a to 31c, 32a to 32c...contacts, 4...electrocardiograph, 5...electrocardiogram display device, 6, 6A, 6B...defibrillation system, 9...patient, Vdc...DC voltage, Z...impedance, Zth1, Zth2...threshold, CTL...control signal, Sc1, Sc2...cardiac potential signal, Sin...operation signal, Ss...audio signal, P1...tip region, P31 to P34...connection points, SW1 to SW4...switches, RL...relay, C...capacitor, E...defibrillation energy.

Claims

1. a power supply device that supplies power to a defibrillation catheter that performs electrical defibrillation; A switching unit for switching the connection state between the electrode catheter and the cardiac potential device; Equipped with the electrode catheter is provided separately from the defibrillation catheter; The cardiac potential device displays the cardiac potential measured using the electrode catheter, The power supply device is A power supply unit that outputs the power; a switching control unit that performs switching control on the switching unit so that the electrode catheter and the cardiac potential device are disconnected during the execution of the defibrillation; A defibrillation system having

2. The power supply device includes: An internal circuit including the switching control unit; a first switching unit that switches a first contact electrically connected to the defibrillation catheter so that the first contact is connected to the cardiac potential device side or the internal circuit side; and a second switching unit as the switching unit switches a connection state between a second contact electrically connected to the electrode catheter and the cardiac potential device; The switching control unit, during the execution period of the defibrillation, The first contact is connected to the internal circuit to supply the power to the defibrillation catheter; so that the second contact is disconnected from the cardiac potential device. Performing switching control for the first switching unit and the second switching unit 2. The defibrillation system of claim 1.

3. After the execution period of the defibrillation, the switching control unit The first contact is connected to the cardiac potential device, A connection is established between the second contact and the cardiac potential device. Performing switching control for the first switching unit and the second switching unit 3. The defibrillation system of claim 2.

4. a power supply unit that supplies power to a defibrillation catheter that performs electrical defibrillation; A switching unit for switching a connection state between the electrode catheter and the cardiac potential device; a switching control unit that performs switching control on the switching unit so that the electrode catheter and the cardiac potential device are disconnected during the execution of the defibrillation; Equipped with the electrode catheter is provided separately from the defibrillation catheter; The cardiac potential device displays the cardiac potential measured using the electrode catheter. power supply.

5. An internal circuit including the switching control unit; a first switching unit that switches a first contact electrically connected to the defibrillation catheter so that the first contact is connected to the cardiac potential device side or the internal circuit side; Further comprising: a second switching unit as the switching unit switches a connection state between a second contact electrically connected to the electrode catheter and the cardiac potential device; The switching control unit, during the execution period of the defibrillation, The first contact is connected to the internal circuit to supply the power to the defibrillation catheter; so that the second contact is disconnected from the cardiac potential device. Performing switching control for the first switching unit and the second switching unit 5. The power supply device according to claim 4.

6. A device provided separately from a power supply device that supplies power to a defibrillation catheter that performs electrical defibrillation, a switching unit for switching a connection state between the electrode catheter and the cardiac potential device, the electrode catheter is provided separately from the defibrillation catheter; The cardiac potential device displays the cardiac potential measured using the electrode catheter, During the execution of the defibrillation, the connection state is switched so that the electrode catheter and the cardiac potential device are disconnected. Switching equipment.

7. A method for controlling switching of a connection state between an electrode catheter provided separately from a defibrillation catheter for performing electrical defibrillation and a cardiac potential device for displaying a cardiac potential measured using the electrode catheter, comprising: a switching control unit that performs switching control of the connection state so that the electrode catheter and the cardiac potential device are disconnected during the execution period of the defibrillation. A method for controlling switching of connection states.

Images