CN112138282B - Defibrillation instrument - Google Patents
Defibrillation instrument Download PDFInfo
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- CN112138282B CN112138282B CN201910584272.3A CN201910584272A CN112138282B CN 112138282 B CN112138282 B CN 112138282B CN 201910584272 A CN201910584272 A CN 201910584272A CN 112138282 B CN112138282 B CN 112138282B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/38—Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
- A61N1/39—Heart defibrillators
- A61N1/3904—External heart defibrillators [EHD]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/38—Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
- A61N1/39—Heart defibrillators
- A61N1/3925—Monitoring; Protecting
- A61N1/3931—Protecting, e.g. back-up systems
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/38—Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
- A61N1/39—Heart defibrillators
- A61N1/3975—Power supply
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Abstract
The application provides a defibrillator. The defibrillator comprises a processing module, an impedance detection module, an energy storage discharge module, a first electrode plate and a second electrode plate, wherein the impedance detection module is used for detecting the impedance between the first electrode plate and the second electrode plate to obtain a detection impedance value, the processing module is used for comparing the detection impedance value with a preset impedance range, and when the detection impedance value is positioned in the preset impedance range and the heart rhythm of a target object is an shockable heart rhythm, the processing module controls the energy storage discharge module to discharge to the first electrode plate and the second electrode plate. The defibrillator provided by the application has longer service life.
Description
Technical Field
The application relates to the technical field of medical instruments, in particular to a defibrillator.
Background
Cardiac diseases such as sudden cardiac arrest are one of the leading causes of death in humans. About 85-90% of patients with cardiac arrest early stage are ventricular fibrillation, and the main mode of treating ventricular fibrillation is to use an automatic external defibrillator (Automated External Defibrillator, AED) to perform electric shock defibrillation on the patients. However, conventional defibrillators have limited service lives for a variety of reasons.
Content of the application
The application provides a defibrillator, which comprises a processing module, an impedance detection module, an energy storage discharge module, a first electrode plate and a second electrode plate, wherein the impedance detection module is used for detecting the impedance between the first electrode plate and the second electrode plate to obtain a detection impedance value, the processing module is used for comparing the detection impedance value with a preset impedance range, and when the detection impedance value is in the preset impedance range and the heart rhythm of a target object is an shockable heart rhythm, the processing module controls the energy storage discharge module to discharge to the first electrode plate and the second electrode plate.
Compared with the prior art, the impedance detection module in the defibrillator detects the impedance between the first electrode plate and the second electrode plate, and when the detected impedance value is in the preset impedance range and the heart rhythm of the target object is the shockable heart rhythm, the processing module controls the energy storage discharge module to discharge to the first electrode plate and the second electrode plate, so that the damage to devices in the defibrillator caused by lower impedance between the first electrode plate and the second electrode plate or still discharge of the energy storage discharge module when the first electrode plate and the second electrode plate are in short circuit is avoided, and the service life of the defibrillator is further prolonged.
The application also provides a defibrillator, which comprises a processing module, an energy storage discharging module, a first electrode plate and a second electrode plate, wherein after the processing module controls the energy storage discharging module to discharge to the first electrode plate and the second electrode plate, the processing module is also used for cutting off a path for releasing energy of the energy storage discharging module, and the energy storage discharging module stores energy.
Compared with the prior art, after the energy storage discharging module discharges to the first electrode plate and the second electrode plate, the processing module cuts off the energy release path of the energy storage discharging module, and the energy storage discharging module stores energy, so that energy loss caused by energy release in the energy storage discharging module is avoided, and the service life of the defibrillator after single charging is finished is further prolonged.
Drawings
In order to more clearly illustrate the structural features and efficacy of the present application, it is obvious that the following description is given in connection with the accompanying drawings and the specific embodiments thereof, in which it is evident that other drawings can be obtained according to the same drawings without the need for inventive work for a person skilled in the art.
Fig. 1 is a schematic circuit diagram of a defibrillator according to a first embodiment of the present application.
Fig. 2 is a schematic diagram of a defibrillator according to a first embodiment of the present application when applied to a subject for treatment.
Fig. 3 is a schematic circuit diagram of a defibrillator according to a first embodiment of the present application.
Fig. 4 is an enlarged schematic view at a in fig. 3.
Fig. 5 is a schematic circuit diagram of a defibrillator according to the related art.
Fig. 6 is a schematic diagram showing the relationship between the load impedance and the energy of the capacitor of the defibrillator according to the present application.
Fig. 7 is a schematic circuit diagram of a defibrillator according to a second embodiment of the present application.
Fig. 8 is a schematic circuit diagram of a defibrillator according to a third embodiment of the present application.
Fig. 9 is a schematic circuit diagram of a defibrillator according to a fourth embodiment of the present application.
Fig. 10 is a schematic circuit diagram of a defibrillator according to a fifth embodiment of the present application.
Fig. 11 is a schematic circuit diagram of a defibrillator according to a second embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are some, but not all, of the embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments. The term "module" used in the present application may be an integrated chip with a certain function, or may be a common circuit composed of circuit components, or be other forms, and the present application is not limited to a specific form of implementing a certain "module", and only needs to implement a corresponding function. In order to make the technical scheme provided by the embodiment of the application clearer, the scheme is described in detail below with reference to the attached drawings.
The present application provides a defibrillator 1. The defibrillator 1 is typically placed in a dense stream of people in public places such as airports, train stations, high-speed rail stations, shops, etc. The defibrillator 1 is used for the rescue of a heart attack of a target subject. Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic circuit diagram of a defibrillator according to a first embodiment of the present application; fig. 2 is a schematic diagram of a defibrillator according to a first embodiment of the present application when applied to a subject for treatment. The defibrillator 1 includes a processing module 10, an impedance detection module 20, an energy storage discharge module 30, a first electrode sheet 40, and a second electrode sheet 50. The impedance detection module 20 is configured to detect an impedance between the first electrode pad 40 and the second electrode pad 50 to obtain a detected impedance value. The processing module 10 is configured to compare the detected impedance value with a preset impedance range, and when the detected impedance value is within the preset impedance range and the target heart rhythm is a shockable heart rhythm, the processing module 10 controls the energy storage discharging module 30 to discharge to the first electrode pad 40 and the second electrode pad 50.
When the defibrillator 1 is applied to a subject, the first electrode sheet 40 and the second electrode sheet 50 are attached to the subject. Generally, the first electrode sheet 40 may be attached between 2-3 intercostals (the bottom of the heart) on the right sternum of the target object, and the second electrode sheet 50 may be attached between 5 th intercostals (the apex of the heart) in the left anterior axillary line of the target object. When the first electrode sheet 40 and the second electrode sheet 50 are attached to the body of the target object, a detection loop is formed among the impedance detection module 20, the first electrode sheet 40, the target object, and the second electrode sheet 50, so as to detect the impedance value among the first electrode sheet 40, the second electrode sheet 50, and the target object. When the detected impedance is within the preset impedance range, the first electrode sheet 40 is well inserted with the impedance detection module 20 and the energy storage discharge module 30, the second electrode sheet 50 is well inserted with the impedance detection module 20 and the energy storage discharge module 30, the first electrode sheet 40 and the second electrode sheet 50 are well contacted with the target object, and the first electrode sheet 40 and the second electrode sheet 50 are attached to the correct position of the target object. In other words, the discharge circuit between the energy storage discharge module 30 and the target object is normal. Then, if the heart rate of the target subject is a shockable heart rate, the processing module 10 controls the energy storage discharging module 30 to discharge to the first electrode pad 40 and the second electrode pad 50 so as to treat the target subject.
For example, the defibrillator 1 further comprises a heart rhythm detection module 60. The heart rate detection module 60 may be a heart rate detection sensor, and the heart rate detection module 60 is electrically connected to the first electrode pad 40 and the second electrode pad 50, respectively. The heart rhythm detection module 60 senses heart activity of the target subject through the first electrode pad 40 and the second electrode pad 50 to obtain a corresponding electrocardiogram (Electrocardiograph, ECG) signal. The processing module 10 analyzes the ECG signal to determine whether the target subject meets shock conditions. When the heart rhythm of the target subject is determined to include at least one of ventricular fibrillation, ventricular tachycardia, and ventricular flutter based on the ECG signal, the heart rhythm of the target subject may be determined to be a shockable heart rhythm. When the heart rhythm of the target subject is judged to be any one of bradycardia, electromechanical separation, ventricular spontaneous rhythm, and normal rhythm based on the ECG signal, the heart rhythm of the target subject may be judged to be a non-shockable heart rhythm.
Compared with the prior art, the impedance detection module 20 in the defibrillator 1 of the present application detects the impedance between the first electrode pad 40 and the second electrode pad 50, and when the detected impedance value is within the preset impedance range and the heart rhythm of the target object is a shockable heart rhythm, the processing module 10 controls the energy storage discharge module 30 to discharge to the first electrode pad 40 and the second electrode pad 50, thereby avoiding the damage to the devices in the defibrillator 1 caused by the discharge of the energy storage discharge module 30 when the impedance between the first electrode pad 40 and the second electrode pad 50 is lower or the short circuit between the first electrode pad 40 and the second electrode pad 50, and further improving the service life of the defibrillator 1.
Further, the range of the preset impedance value is 25-300 ohms.
Because of the difference of the human body types and the difference of the fat and the thin, the impedance values of different people are different, and therefore, the preset impedance range is selected to be 25-300 ohms, so that the difference of the impedance values caused by the difference of the human body types can be met, the error caused by the fact that the processing module 10 judges whether a discharge loop between the energy storage discharge module 30 and a target object is normal or not is avoided, the probability of success in rescuing the target object is improved, and the life of the target object is saved.
Further, when the detected impedance value is greater than the maximum value in the preset impedance range or when the detected impedance value is less than the minimum value in the preset impedance range, the processing module 10 prohibits the energy storage discharging module 30 from discharging to the first electrode pad 40 and the second electrode pad 50. In general, when the detected impedance value is smaller than the minimum value in the preset impedance range, there may be a case where the first electrode pad 40 and the second electrode pad 50 are shorted or the first electrode pad 40 and the second electrode pad 50 are attached to the target object at too close a distance; when the detected impedance value is greater than the maximum value in the preset impedance range, there may be a case where at least one of the first electrode sheet 40 and the second electrode sheet 50 is poorly adhered to the target object, or at least one of the first electrode sheet 40 and the second electrode sheet 50 is not well inserted, or the like. In the embodiment of the present application, when the detected impedance value is greater than the maximum value in the preset impedance range or when the detected impedance value is less than the minimum value in the preset impedance range, the processing module 10 prohibits the energy storage discharging module 30 from discharging to the first electrode pad 40 and the second electrode pad 50, so that the target object or a salvation person salving the target object can be prevented from being injured by the erroneous discharge.
Further, referring to fig. 3, fig. 3 is a schematic circuit diagram of a defibrillator according to a first embodiment of the present application. The energy storage discharging module 30 includes a first capacitor C1, a first switch SW1, a second switch SW3, and a first relay K1. The first capacitor C1 is electrically connected to the first electrode pad 40 through the first switch SW1 and the first relay K1, and the first capacitor C1 is also electrically connected to the second electrode pad 50 through the second switch SW3 and the first relay K1. When the detected impedance value is within the preset range and the target heart rhythm is a shockable heart rhythm, the processing module 10 controls the first switch SW1, the second switch SW3 and the first relay K1 to be closed, and the first capacitor C1 performs a first type discharge to the first electrode pad 40 and the second electrode pad 50.
Further, referring to fig. 4, fig. 4 is an enlarged schematic diagram of fig. 3 a. The first relay K1 includes a first input terminal a, a second input terminal b, a first output terminal c, and a second output terminal d. One end of the first capacitor C1 is electrically connected to the first switch SW1 to the first input terminal a, and the other end of the second capacitor C2 is electrically connected to the second switch SW3 to the second input terminal b. The first output terminal c is electrically connected to the first electrode pad 40, and the second output terminal d is electrically connected to the second electrode pad 50.
When the first relay K1 is closed, the first input terminal a is electrically connected to the first output terminal c, and the second input terminal b is electrically connected to the second output terminal d.
Further, referring to fig. 3 again, the energy storage discharging module 30 further includes a current limiting resistor Rc, where a resistance range of the current limiting resistor Rc is: 10 milliohms to 50 milliohms. In the present embodiment, the current limiting resistor Rc is connected between the first capacitor C1 and the second switch SW 3. Optionally, the resistance of the current limiting resistor Rc is 20 milliohms.
Further, after the first relay K1 is closed for a first preset time, the processing module 10 controls the first capacitor C1 to perform the first type discharge to the first electrode pad 40 and the second electrode pad 50.
The first type of discharge is also called I-phase discharge. After the first relay K1 is closed for a first preset time, the first input end a and the first output end c of the first relay K1 can form good electrical contact, and the second input end b and the second output end d can form good electrical contact. Therefore, after the first relay K1 is closed for the first preset time, the processing module 10 in this embodiment controls the first capacitor C1 to perform the first type discharge to the first electrode pad 40 and the second electrode pad 50, so that the stability and reliability of the first capacitor C1 in discharging the first electrode pad 40 and the second electrode pad 50 can be ensured, and the probability of success in rescuing the target object is improved. Alternatively, the value of the first preset time may be, but is not limited to, 0.5 seconds.
Further, the energy storage discharging module 30 further includes a second capacitor C2, a third switch SW2, and a fourth switch SW4. The second capacitor C2 and the first capacitor C1 are electrically connected to the first electrode pad 40 through the third switch SW2 and the first relay K1, and the second capacitor C2 and the first capacitor C1 are also electrically connected to the second electrode pad 50 through the fourth switch SW4 and the first relay K1. The processing module 10 is further configured to control the first switch SW1 to be turned off, the second switch SW3 to be turned off, the third switch SW2 to be turned on, and the fourth switch SW4 to be turned on at a second preset time interval after the first type of discharge is completed, and the first capacitor C1 and the second capacitor C2 perform the second type of discharge to the first electrode pad 40 and the second electrode pad 50.
Further, one end of the second capacitor C2 is electrically connected to one end of the first capacitor C1, which is not connected to the second switch SW3, and the other end of the second capacitor C2 is electrically connected to the third switch SW2 to the second input terminal b. The fourth switch SW4 is electrically connected to the first switch SW1 and the second switch SW3, and a node of the fourth switch SW4 electrically connected to the second switch SW3 is electrically connected to the first capacitor C1.
In the defibrillator 1 according to the present embodiment, the discharge circuit between the energy storage discharge module 30 and the first electrode sheet 40 and the second electrode 50 does not include the first energy dissipation resistor Rs. Specifically, in this embodiment, the energy storage and discharge module 30 is directly electrically connected to the first electrode sheet 40 and the second electrode sheet 50, the energy storage and discharge module 30 does not include the first energy dissipation resistor Rs between the first electrode sheet 40 and the energy storage and discharge module 30 does not include the first energy dissipation resistor Rs between the second electrode sheet 50. The first capacitor C1 is directly connected with the second capacitor C2, and the first energy dissipation resistor Rs is not included between the first capacitor C1 and the second capacitor C2. Specifically, the discharge circuit between the energy storage discharge module 30 and the first electrode pad 40 and the second electrode 50 does not include the first dissipation resistor Rs, which means any one of a structure in which the first dissipation resistor Rs is connected in series with the inductor Ls, or a structure in which the first dissipation resistor Rs is connected in series with the inductor Ls and then connected in parallel with the diode D4. Referring to fig. 5, fig. 5 is a schematic circuit diagram of a defibrillator in the related art. The defibrillator 1 shown in fig. 5 has a current limiting module 91 electrically connected between the first capacitor C1 and the second capacitor C2, the current limiting module 91 comprising a first dissipation resistor Rs, an inductance Ls and a diode D4. One end of the first dissipation resistor Rs is electrically connected to the second capacitor C2, and the other end of the first dissipation resistor Rs is electrically connected to the inductor Ls to the first capacitor C1. When the first type of discharge and the second type of discharge are performed, since the first energy dissipation resistor Rs is included between the first capacitor C1 and the second capacitor C2, a part of the electric energy is consumed by the first energy dissipation resistor Rs, that is, unnecessary energy loss is caused, so that the energy consumption of the battery 90 is accelerated. Assuming that the detected impedance value of the target object is 50 ohms, when the first energy dissipation resistance Rs is 5 ohms, the proportion of energy loss on the first energy dissipation resistance Rs is 5/(5+50) ≡9%, and assuming that the energy storage discharging module 30 releases 360J of energy, the energy loss on the first energy dissipation resistance Rs is 360×5/(5+50) ≡32.7J; assuming that the detected impedance value of the target object is 25 ohms, when the first dissipation resistor Rs is 5 ohms, the proportion of energy loss on the first dissipation resistor Rs is 5/(5+25) ≡16.6%. The greater the proportion of energy loss across the first dissipative resistor Rs, the more energy loss the battery 90, and the battery 90 is typically a disposable battery, the fewer times the battery 90 is available to treat a patient for a given capacity. In addition, the energy loss on the first energy dissipation resistor Rs is completely dissipated to the inside of the defibrillator 1 by heat, thereby causing the temperature of the defibrillator 1 to rise, thereby reducing the service life of the defibrillator 1.
The defibrillator 1 provided by the embodiment of the application does not include the first energy dissipation resistor Rs between the first capacitor C1 and the second capacitor C2, and can avoid the temperature rise of the defibrillator 1 caused by the discharge of the first capacitor C1 and the second capacitor C2, thereby being beneficial to prolonging the service life of the defibrillator 1. Further, in the case where the impedance of the target object electrically connected between the first electrode sheet 40 and the second electrode sheet 50 is constant, the charge cutoff voltage of the capacitor corresponds to the energy one by one, that is, the higher the energy of the capacitor is, the higher the charge cutoff voltage of the capacitor is; the lower the energy of the capacitor, the lower the charge cut-off voltage of the capacitor. For the same charging voltage, the higher the charging cutoff voltage of the capacitor, the longer the time required to charge to the charging cutoff voltage; the lower the charge cutoff voltage of the capacitor, the shorter the time required to charge to the charge cutoff voltage. Therefore, the defibrillator 1 provided in the embodiment of the present application does not include the first energy dissipation resistor Rs between the first capacitor C1 and the second capacitor C2, so that the charging cut-off voltage of the first capacitor C1 and the second capacitor C2 can be reduced while reducing the energy loss, so that the time from the charging of the first capacitor C1 and the second capacitor C2 to the charging cut-off voltage is reduced, thereby shortening the time for rescuing the target object, and being beneficial to saving the life of the target object.
Referring to fig. 6, fig. 6 is a schematic diagram showing the relationship between the load impedance and the energy of the capacitor of the defibrillator according to the present application. In fig. 6, the abscissa is given in units of impedance, ohm (Ω), and the ordinate is given in units of energy, joules (J). Fig. 6 is a graph ① showing the relationship between the load impedance and the capacitance energy of a conventional defibrillator, and fig. ② is a graph showing the relationship between the load impedance and the capacitance energy of a defibrillator according to the present application. As can be seen from fig. 6, under the condition that the load impedance is constant, the energy of the capacitors (the first capacitor C1 and the second capacitor C2) in the defibrillator provided by the present application is lower, that is, the shorter the time for the capacitor to charge to the target cutoff voltage.
Further, referring to fig. 4, the current generated by the first type of discharge is opposite to the current generated by the second type of discharge.
Further, referring to fig. 4, after the second type discharge is completed, the processing module 10 controls the third switch SW2 and the fourth switch SW4 to be turned off.
Further, referring to fig. 4, after the energy storage discharging module 30 finishes discharging the first electrode pad 40 and the second electrode pad 50, the processing module 10 is further configured to cut off a path for releasing energy of the first capacitor C1 and the second capacitor C2, and the first capacitor C1 and the second capacitor C2 store energy. After the energy storage and discharge module 30 discharges the first electrode plate 40 and the second electrode plate 50, the defibrillator 1 of the embodiment of the present application stores energy in the first capacitor C1 and the second capacitor C2, so that energy loss caused by the energy release of the first capacitor C1 and the second capacitor C2 can be avoided, and the more times the battery 90 with a certain capacitance can be used for patient treatment.
Further, referring to fig. 4, the defibrillator 1 further includes a battery 90, a charging module 110, and a first diode D2. The battery 90 is electrically connected to the charging module 110, the charging module 110 is configured to boost a voltage output by the battery 90, the charging module 110 includes a first charging end 111 and a second charging end 112, the first charging end 111 is electrically connected to the first capacitor C1 and is electrically connected to one end of the third switch unit SW3, the second charging end 112 is electrically connected to the anode of the first diode D2, and the cathode of the first diode D2 is electrically connected to the other end of the first capacitor C1.
Further, the defibrillator 1 further comprises a second diode D1. The charging module 110 further includes a third charging terminal 113, where the third charging terminal 113 is electrically connected to the positive electrode of the second diode D1, and the negative electrode of the second diode D1 is electrically connected to one end of the second capacitor C2. The first diode D2 and the second diode D1 function to rectify the voltage output from the charging module 110.
Further, the defibrillator 1 further comprises a third diode D3. The positive electrode of the third diode D3 is electrically connected to a node where the second capacitor C2 is electrically connected to the first capacitor C1, and the negative electrode of the third diode D3 is electrically connected to the other end of the second capacitor C2. The third diode D3 is configured to overvoltage protect the second capacitor C2.
Further, referring to fig. 7 together, fig. 7 is a schematic circuit diagram of a defibrillator according to a second embodiment of the present application. The defibrillator 1 in this embodiment is substantially identical to the defibrillator 1 described above, except that in this embodiment the defibrillator 1 further comprises a voltage monitoring module 70. The voltage monitoring module 70 is configured to monitor the voltage of the first capacitor C1 to obtain a first monitored voltage, and is also configured to monitor the voltage of the second capacitor C2 to obtain a second monitored voltage. The processing module 10 is configured to compare the first monitored voltage with a first preset voltage range, the processing module 10 is further configured to compare the second monitored voltage with a second preset voltage range, and when the first monitored voltage falls within the first preset voltage range and the second monitored voltage falls within the second preset voltage range, the processing module 10 cuts off a path of the battery 90 connected to the charging module 110.
Further, referring to fig. 8, fig. 8 is a schematic circuit diagram of a defibrillator according to a third embodiment of the present application. The defibrillator 1 of this embodiment is basically the same as the defibrillator 1 described above, except that in this embodiment the defibrillator 1 further comprises a heart rhythm detection module 60, a battery 90. The heart rhythm detection module 60 is configured to detect a heart rhythm of a target subject, the processing module 10 is configured to compare the heart rhythm of the target subject with a preset shockable heart rhythm to determine whether the heart rhythm of the target subject is a shockable heart rhythm, and the processing module 10 controls the battery 90 to start charging the energy storage discharge module 30 before determining that the heart rhythm of the target subject is a shockable heart rhythm. Before determining that the heart rhythm of the target object is the shockable heart rhythm, the processing module 10 controls the battery 90 to charge the energy storage discharging module 30, so that the electric quantity in the energy storage discharging module 30 is favorably charged to the electric quantity required by shock treatment of the target object in advance, the time from the completion of charging the energy storage discharging module 30 to the discharge of the energy storage discharging module 30 to the first electrode sheet 40 and the second electrode sheet 50 for treatment of the target object can be shortened, and the life of the target object can be saved. It may be understood that, in this embodiment, only the time node at which the processing module 10 controls the battery 90 to start charging the energy storage and discharging module 30 is limited, and the time node at which the battery 90 ends charging the energy storage and discharging module 30 is not limited, and the time node at which the battery 90 ends charging the energy storage and discharging module 30 may be before determining that the heart rhythm of the target object is a shockable heart rhythm, or after determining that the heart rhythm of the target object is a shockable heart rhythm, even if the time node at which the charging ends is exactly the time node at which the heart rhythm of the target object is determined to be a shockable heart rhythm, or the like.
Further, the defibrillator 1 further comprises a power-on monitoring module 80, wherein the power-on monitoring module 80 is used for detecting whether the defibrillator 1 is powered on or not. The processing module 10 is configured to control the battery 90 to start charging the energy storage and discharge module 30 when the power-on monitoring module 80 detects that the defibrillator 1 is powered on. In this embodiment, the processing module 10 controls the battery 90 to start charging the energy storage and discharge module 30 when detecting that the defibrillator 1 is started, which greatly advances the time for completing charging the energy storage and discharge module 30, and is further beneficial to saving the life of the target object.
Referring to fig. 9, fig. 9 is a schematic circuit diagram of a defibrillator according to a fourth embodiment of the present application. The defibrillator 1 includes a processing module 10, an energy storage discharge module 30, a first electrode sheet 40, and a second electrode sheet 50. After the processing module 10 controls the energy storage discharging module 30 to discharge to the first electrode sheet 40 and the second electrode sheet 50, the processing module 10 is further configured to cut off a path for releasing energy of the energy storage discharging module 30, and the energy storage discharging module 30 stores energy.
In the defibrillator 1 of the present embodiment, after the energy storage discharge module 30 discharges to the first electrode sheet 40 and the second electrode sheet 50, the energy discharge path of the energy storage discharge module 30 is cut off, and the energy of the energy storage discharge module 30 cannot be discharged. When the target object is treated next time, the energy storage and discharge module 30 stores energy, so that the energy storage and discharge module 30 can be rapidly charged to preset energy, and the life of the target object can be saved. It will be appreciated that the energy required to rescue the target object may be satisfied when the energy storage and discharge module 30 is charged to a predetermined energy.
Compared with the prior art, after the energy storage discharging module discharges to the first electrode plate and the second electrode plate, the processing module cuts off the energy release path of the energy storage discharging module, and the energy storage discharging module stores energy, so that energy loss caused by energy release in the energy storage discharging module is avoided, and the service life of the defibrillator after single charging is finished is further prolonged.
Further, referring to fig. 10, fig. 10 is a schematic circuit diagram of a defibrillator according to a fifth embodiment of the present application. The defibrillator 1 according to the present embodiment is substantially the same as the defibrillator 1 according to the fourth embodiment, except that in the present embodiment, the defibrillator 1 further includes an impedance detection module 20, and the impedance detection module 20 is configured to detect the impedance between the first electrode pad 40 and the second electrode pad 50 to obtain a detected impedance value. The processing module 10 is configured to compare the detected impedance value with a preset impedance range, and when the detected impedance value is within the preset impedance range and the target heart rhythm is a shockable heart rhythm, the processing module 10 controls the energy storage discharging module 30 to discharge to the first electrode pad 40 and the second electrode pad 50.
Further, the defibrillator 1 also includes a heart rhythm detection module 60. The heart rate detection module 60 may be a heart rate detection sensor, and the heart rate detection module 60 is electrically connected to the first electrode pad 40 and the second electrode pad 50, respectively. The heart rhythm detection module 60 senses heart activity of the target subject through the first electrode pad 40 and the second electrode pad 50 to obtain a corresponding electrocardiogram (Electrocardiograph, ECG) signal. The processing module 10 analyzes the ECG signal to determine whether the target subject meets shock conditions. When the heart rhythm of the target subject is determined to include at least one of ventricular fibrillation, ventricular tachycardia, and ventricular flutter based on the ECG signal, the heart rhythm of the target subject may be determined to be a shockable heart rhythm. When the heart rhythm of the target subject is judged to be any one of bradycardia, electromechanical separation, ventricular spontaneous rhythm, and normal rhythm based on the ECG signal, the heart rhythm of the target subject may be judged to be a non-shockable heart rhythm.
Referring to fig. 11, fig. 11 is a schematic circuit diagram of a defibrillator according to a second embodiment of the present application. The schematic circuit configuration of the defibrillator 1 provided in this embodiment can be combined with any one of the fourth embodiment and the fifth embodiment. The energy storage discharging module 30 includes a first capacitor C1, a first switch SW1, a second switch SW3, and a first relay K1, where the first capacitor C1 is electrically connected to the first electrode pad 40 through the first switch SW1 and the first relay K1, and the first capacitor C1 is further electrically connected to the second electrode pad 50 through the second switch SW3 and the first relay K1, and when the detected impedance value is within the preset range and the heart rhythm of the target object is an shockable heart rhythm, the processing module 10 controls the first switch SW1, the second switch SW3, and the first relay K1 to be closed, and the first capacitor C1 discharges the first electrode pad 40 and the second electrode pad 50 in a first type.
Further, the energy storage discharging module 30 further includes a second capacitor C2, a third switch SW2, and a fourth switch SW4, the second capacitor C2 and the first capacitor C1 are electrically connected to the first electrode pad 40 through the third switch SW2 and the first relay K1, the second capacitor C2 and the first capacitor C1 are further electrically connected to the second electrode pad 50 through the fourth switch SW4 and the first relay K1, and the processing module 10 is further configured to control the first switch SW1 to be opened, the second switch SW3 to be opened, the third switch SW2 to be closed, and the fourth switch SW4 to be closed, and the first capacitor C1 and the second capacitor C2 to discharge the second type to the first electrode pad 40 and the second electrode pad 50 at a second preset time interval after the first type of discharge is completed.
Further, the current generated by the first type of discharge is opposite to the current generated by the second type of discharge.
Further, the defibrillator 1 further includes a second energy dissipation resistor Rd and a second relay K2, wherein the second energy dissipation resistor Rd is electrically connected to the energy storage discharging module 30 through the second relay K2, and the processing module 10 is further configured to keep the second relay K2 in an off state after the energy storage discharging module 30 discharges the first electrode pad 40 and the second electrode pad 50.
The foregoing has outlined rather broadly the more detailed description of the embodiments of the application in order that the detailed description of the principles and embodiments of the application may be implemented in conjunction with the detailed description of the embodiments that follows, the claims being merely intended to facilitate the understanding of the method and concepts underlying the application; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the idea of the present application, the present disclosure should not be construed as limiting the present application in summary.
Claims (23)
1. The defibrillator is characterized by comprising a processing module, an impedance detection module, an energy storage discharge module, a first electrode plate and a second electrode plate, wherein the impedance detection module is used for detecting the impedance between the first electrode plate and the second electrode plate to obtain a detection impedance value, the processing module is used for comparing the detection impedance value with a preset impedance range, and when the detection impedance value is in the preset impedance range and the heart rhythm of a target object is an shockable heart rhythm, the processing module controls the energy storage discharge module to discharge to the first electrode plate and the second electrode plate; when the detected impedance value is greater than the maximum value in the preset impedance range or when the detected impedance value is less than the minimum value in the preset impedance range, the processing module prohibits the energy storage discharge module from discharging to the first electrode sheet and the second electrode sheet;
The energy storage discharging module is connected with the first electrode plate and the second electrode plate, and a discharging loop between the energy storage discharging module and the first electrode plate does not comprise a first energy consumption resistor.
2. The defibrillator of claim 1 wherein said predetermined impedance range is: 25-300 ohms.
3. The defibrillator of claim 1 wherein the energy storage discharge module comprises a first capacitor, a first switch, a second switch, and a first relay, wherein the first capacitor is electrically connected to the first electrode pad through the first switch and the first relay, and the first capacitor is further electrically connected to the second electrode pad through the second switch and the first relay, and the processing module controls the first switch, the second switch, and the first relay to be closed when the detected impedance value is within the preset impedance range and the heart rhythm of the target subject is a shockable heart rhythm, and the first capacitor discharges a first type to the first electrode pad and the second electrode pad.
4. The defibrillator of claim 3 wherein the first relay comprises a first input, a second input, a first output, and a second output, one end of the first capacitor electrically connects the first switch to the first input, the other end of the first capacitor electrically connects the second switch to the second input, the first output is electrically connected to the first electrode pad, and the second output is electrically connected to the second electrode pad.
5. The defibrillator of claim 1 wherein the energy storage discharge module further comprises a current limiting resistor having a resistance value ranging from: 10 milliohms to 50 milliohms.
6. The defibrillator of claim 4 wherein after said first relay is closed for a first predetermined time, said processing module controls said first type of discharge of said first capacitor to said first electrode pad and said second electrode pad.
7. The defibrillator of claim 4 or 6 wherein the energy storage discharge module further comprises a second capacitor, a third switch, and a fourth switch, wherein the second capacitor and the first capacitor are electrically connected to the first electrode pad through the third switch and the first relay, and wherein the second capacitor and the first capacitor are electrically connected to the second electrode pad through the fourth switch and the first relay, and wherein the processing module is further configured to control the first switch to open, the second switch to open, the third switch to close, and the fourth switch to close, and wherein the first capacitor and the second capacitor are electrically connected to the first electrode pad and the second electrode pad for a second predetermined time interval when the first type of discharge is completed.
8. The defibrillator of claim 7 wherein one end of said second capacitor is electrically connected to one end of said first capacitor not connected to said second switch, the other end of said second capacitor is electrically connected to said third switch to said second input, said fourth switch is connected to said first switch and second switch, and a node of said fourth switch electrically connected to said second switch is electrically connected to said first capacitor.
9. The defibrillator of claim 8 wherein the current produced by the first type of discharge is opposite to the current produced by the second type of discharge.
10. The defibrillator of claim 8 wherein the processing module controls the third switch and the fourth switch to open after the second type of discharge is completed.
11. The defibrillator of claim 8 wherein the processing module is further configured to cut off the path of energy release from the first capacitor and the second capacitor after the energy storage discharge module has discharged to the first electrode pad and the second electrode pad, the first capacitor and the second capacitor conserving energy.
12. The defibrillator of claim 8 wherein the defibrillator further comprises a battery, a charging module, and a first diode, the battery being electrically connected to the charging module, the charging module being for boosting a voltage output by the battery, the charging module comprising a first charging terminal electrically connected to one terminal of the first capacitor electrically connected to the second switch, and a second charging terminal electrically connected to the positive terminal of the first diode, the negative terminal of the first diode being electrically connected to the other terminal of the first capacitor.
13. The defibrillator of claim 12 wherein the defibrillator further comprises a second diode, wherein the charging module further comprises a third charging terminal, wherein the third charging terminal is electrically connected to the anode of the second diode, and wherein the cathode of the second diode is electrically connected to one end of the second capacitor.
14. The defibrillator of claim 13 wherein the defibrillator further comprises a third diode, the anode of the third diode being electrically connected to a node of the second capacitor that is electrically connected to the first capacitor, and the cathode of the third diode being electrically connected to the other end of the second capacitor.
15. The defibrillator of claim 12 further comprising a voltage monitoring module for monitoring the voltage of the first capacitor for a first monitored voltage and for monitoring the voltage of the second capacitor for a second monitored voltage, the processing module for comparing the first monitored voltage to a first preset voltage range, the processing module further for comparing the second monitored voltage to a second preset voltage range, the processing module cutting off the path of the battery to the charging module when the first monitored voltage falls within the first preset voltage range and the second monitored voltage falls within the second preset voltage range.
16. The defibrillator of claim 1, wherein the defibrillator further comprises a heart rhythm detection module for detecting a heart rhythm of the target subject, a battery, and wherein the processing module is configured to compare the heart rhythm of the target subject with a preset shockable heart rhythm to determine whether the heart rhythm of the target subject is shockable, and wherein the processing module is configured to control the battery to begin charging the energy storage discharge module prior to determining that the heart rhythm of the target subject is shockable.
17. The defibrillator of claim 16 wherein the defibrillator further comprises a power-on monitoring module for detecting whether the defibrillator is powered on, and wherein the processing module is configured to control the battery to begin charging the energy storage discharge module when the power-on monitoring module detects that the defibrillator is powered on.
18. The defibrillator is characterized by comprising a processing module, an impedance detection module, an energy storage discharge module, a first electrode plate and a second electrode plate, wherein after the processing module controls the energy storage discharge module to discharge to the first electrode plate and the second electrode plate, the processing module is also used for cutting off a path for releasing energy of the energy storage discharge module, and the energy storage discharge module stores energy;
The impedance detection module is used for detecting the impedance between the first electrode plate and the second electrode plate to obtain a detection impedance value;
The processing module is used for comparing the detected impedance value with a preset impedance range, and when the detected impedance value is larger than the maximum value in the preset impedance range or the detected impedance value is smaller than the minimum value in the preset impedance range, the processing module prohibits the energy storage discharge module from discharging to the first electrode slice and the second electrode slice;
The energy storage discharging module is connected with the first electrode plate and the second electrode plate, and a discharging loop between the energy storage discharging module and the first electrode plate does not comprise a first energy consumption resistor.
19. The defibrillator of claim 18 wherein the processing module controls the discharge of the energy storage discharge module to the first electrode pad and the second electrode pad when the detected impedance value is within the preset impedance range and the heart rhythm of the target subject is a shockable heart rhythm.
20. The defibrillator of claim 19 wherein the energy storage discharge module comprises a first capacitor, a first switch, a second switch, and a first relay, wherein the first capacitor is electrically connected to the first electrode pad through the first switch and the first relay, and wherein the first capacitor is further electrically connected to the second electrode pad through the second switch and the first relay, and wherein the processing module controls the first switch, the second switch, and the first relay to be closed when the detected impedance value is within the preset impedance range and the heart rhythm of the target subject is a shockable heart rhythm, and wherein the first capacitor discharges a first type to the first electrode pad and the second electrode pad.
21. The defibrillator of claim 20 wherein the energy storage discharge module further comprises a second capacitor, a third switch, and a fourth switch, wherein the second capacitor and the first capacitor are electrically connected to the first electrode pad through the third switch and the first relay, and wherein the second capacitor and the first capacitor are electrically connected to the second electrode pad through the fourth switch and the first relay, and wherein the processing module is further configured to control the first switch to open, the second switch to open, the third switch to close, and the fourth switch to close, and wherein the first capacitor and the second capacitor are configured to discharge a second type to the first electrode pad and the second electrode pad at a second predetermined time interval after the first type of discharge is completed.
22. The defibrillator of claim 21 wherein the current produced by said first type of discharge is opposite to the current produced by said second type of discharge.
23. The defibrillator of claim 18 wherein the defibrillator further comprises a second dissipative resistor, and a second relay, wherein the second dissipative resistor is electrically connected to the energy storage discharge module through the second relay, and wherein the processing module is further configured to maintain the second relay in an off state after the energy storage discharge module discharges the first electrode pad and the second electrode pad.
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