CN114053584A - Defibrillator with position adjustment indication - Google Patents
Defibrillator with position adjustment indication Download PDFInfo
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- CN114053584A CN114053584A CN202111454295.6A CN202111454295A CN114053584A CN 114053584 A CN114053584 A CN 114053584A CN 202111454295 A CN202111454295 A CN 202111454295A CN 114053584 A CN114053584 A CN 114053584A
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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
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/053—Measuring electrical impedance or conductance of a portion of the body
- A61B5/0531—Measuring skin impedance
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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
- A61N1/3925—Monitoring; Protecting
- A61N1/3937—Monitoring output parameters
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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
- A61N1/3968—Constructional arrangements, e.g. casings
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Abstract
The invention discloses a defibrillator with position adjustment indication, which relates to the field of medical auxiliary instruments, can judge the appropriateness of the placement positions of two electrode plates through the color of a signal lamp, and then enables the invalid energy between the two electrode plates to be lower by adjusting the positions of the two electrode plates so as to improve the success rate of defibrillation, and the specific scheme is as follows: the human body impedance measuring device comprises a human body impedance measuring device, electrode plates and signal lamps, wherein the electrode plates and the signal lamps are respectively connected with the human body impedance measuring device through circuits, and the signal lamps send signals with different colors when the human body impedance measuring device measures impedances in different intervals. The defibrillator with the position adjusting indication function can detect the sticking positions of the two electrode plates, so that the defibrillation effect of the sticking positions of the electrode plates under the same energy is better; the defibrillator with the position adjusting and indicating function can accurately position the electrode plates in an emergency, so that the number of defibrillation attempts is reduced, and the life of a patient can be saved in time.
Description
Technical Field
The present invention relates to the field of medical aids, and more particularly, it relates to a defibrillator with position adjustment indication.
Background
The defibrillator is a medical appliance which eliminates arrhythmia by utilizing stronger pulse current to pass through the heart so as to recover sinus rhythm, and is a necessary emergency equipment for various departments of a hospital.
The service conditions of the defibrillator comprise emergency and non-emergency, under the emergency, the defibrillator defibrillates by attaching the two electrode plates to the left and right sides of the heart, the rescue time of a patient is short, therefore, the electrode plates cannot be accurately attached, the defibrillating is relatively blind, and the defibrillating is not well retreated due to emergency. In non-emergency situations, such as atrial fibrillation, supraventricular tachycardia, ventricular tachycardia and the like, sufficient preparation time is provided during defibrillation, and position pasting can be performed better according to a course.
In practical situations, according to the difference of the thickness and the width of the chest wall of each person, the positions where the two electrode plates are attached have obvious influence on the effect, when the positions where the two electrode plates are attached are different, the impedance between the two electrode plates is different, the invalid energy consumption between the two defibrillation electrode plates is different, a certain failure rate is caused, and the defibrillation operation needs to be performed for many times.
Disclosure of Invention
In order to solve the technical problems, the invention provides a defibrillator with position adjustment indication, which can judge the appropriateness of the placement positions of two electrode plates through the color of a signal lamp, and then enable the invalid energy between the two electrode plates to be lower by adjusting the positions of the two electrode plates, thereby improving the success rate of defibrillation.
The technical purpose of the invention is realized by the following technical scheme:
a defibrillator with position adjustment indication comprises a human body impedance measuring device, electrode plates and signal lamps, wherein the electrode plates and the signal lamps are respectively in circuit connection with the human body impedance measuring device, and the signal lamps send signals of different colors when the human body impedance measuring device measures impedances in different intervals.
In the above scheme, the device for measuring the impedance of the human body can adopt the prior art, and applies a high-frequency low-current excitation signal to the human body, then obtains a thoracic impedance signal corresponding to the excitation signal, and digitally collects the thoracic impedance signal. After the human body impedance value is detected, corresponding interval signals corresponding to the signal lamps through presetting the color of the signal lamps corresponding to the impedance value, and then lighting the signal lamps; and judging whether the two electrode plates are in the optimal positions or not according to different colors of the lighted signal lamps, and adjusting the position between the two electrode plates according to the condition to finally achieve the purpose of improving the defibrillation success rate.
As a preferred scheme, the human body impedance measuring device comprises a direct current generator and an alternating current generator, and the direct current generator and the alternating current generator are respectively connected with the electrode plate circuit through control switches.
In the preferred scheme, the human body impedance value is measured twice by the direct current generator and the alternating current generator, and the finally measured human body impedance value is more accurate by obtaining the average value, so that the defibrillation is better assisted.
As a preferred scheme, the defibrillator with the position adjusting indication function further comprises a defibrillation electric energy generator, the defibrillation electric energy generator is respectively connected with the direct current generator and the alternating current generator in parallel, and the defibrillation electric energy generator, the direct current generator and the alternating current generator are in signal connection with the electrode plates through the three-gear toggle switch.
In the preferred scheme, the impedance value of the human body is measured sequentially by adjusting gears one by one, then the position of an electrode plate is adjusted, and after the electrode plate is adjusted, defibrillation work is performed through a defibrillation electric energy generator; through three-gear setting, the whole device is simpler in structure and better realizes work step by step.
As a preferable scheme, the defibrillation electric energy generator is provided with an electromagnetic switch in series, and the electromagnetic switch is connected with the signal lamp circuit.
In the above preferred scheme, the signal lamp controls the on-off of the circuit where the defibrillation electric energy generator is located, and under the condition that the two electrode plates are attached to the position, when the human body resistance value is higher than a certain threshold value, the signal lamp emits abnormal bright color, and controls the electromagnetic switch of the defibrillation electric energy generator to be turned off according to the circuit signal, so that the defibrillation electric energy generator cannot work even if the gear is adjusted to the circuit where the defibrillation electric energy generator is located. Therefore, the situation that defibrillation work is carried out under the condition that the positions of the two electrode plates are seriously deviated can be effectively prevented.
As a preferred scheme, the defibrillator with the position adjustment indication is arranged in a work box, and the work box further comprises a connecting line placing groove and an article placing groove.
In the above preferred embodiment, the wire housing groove is provided in the work box, so that the used connection wires, the unused electric wires, and the like can be housed and stored.
Preferably, the electrode plates comprise three pairs of electrode plates with successively increased sizes, and the three pairs of electrode plates are placed in the article placing groove in an unused state.
In the above preferred embodiment, a plurality of electrode pads of a plurality of sizes are provided, so that the electrode pads can be used by people of different body types, and when the electrode pads are used, the electrode pads of an appropriate size are selected to be connected into the circuit.
As a preferred scheme, the specific method for measuring the resistance of the human body impedance measuring device is as follows:
s1: attaching a pair of electrode plates to the defibrillation indication position of the human body;
s2: controlling the toggle switch to enable the electrode plate to be in circuit connection with the alternating current generator;
s3: measuring the capacitance of the electrode plate at the fitting position:
wherein: rbIs a body resistance value, RsFor the resistance values of the series of devices, theta is the phase difference and omega is the angular frequency
T is the time of measurement, and T is the period of the input signal; f is the frequency of the input signal;
s4: controlling a toggle switch to disconnect an alternating current generator, connecting the direct current generator with an electrode plate, and measuring the impedance of the electrode plate under the fitting position:
where C is the capacitance measured in S3.
In the scheme, the device can be used for measuring the human body impedance by the detection method, so that equipment of the defibrillator can be simplified, and the measurement effect is accurate.
A defibrillation method of a defibrillator with position adjustment indication is based on the defibrillator with position adjustment indication, and comprises the following steps:
t1: attaching a pair of electrode plates to the defibrillation indication position of the human body;
t2: measuring the impedance of the electrode plate at the fitting position;
t3: controlling the color change of the signal lamp according to the acquired impedance value, wherein the color comprises a normal color and an abnormal color;
t4: the signal lamp starts defibrillation work under the condition of normal color;
t5: and under the condition of abnormal color, the signal lamp redetermines the joint position of the electrode plate until the signal lamp changes to the normal color, and the defibrillation work is started.
As a preferred scheme, the color of the signal lamp comprises three colors of red, yellow and green, wherein the green corresponds to the impedance normal interval, the yellow is the abnormal interval, and the red is the serious abnormal interval.
As a preferable scheme, the calculation method of the charging voltage value U is as follows:
wherein,ZmeasuringFor measuring body impedance, ZPreparation ofImpedance set for pre-defibrillator, W is set defibrillation energy, ZOutput ofIs the output impedance of the defibrillator, C1Is the capacitance value of the defibrillator.
In conclusion, the invention has the following beneficial effects:
(1) the defibrillator with the position adjusting indication function can detect the sticking positions of the two electrode plates, so that the defibrillation effect of the sticking positions of the electrode plates under the same energy is better;
(2) the defibrillator with the position adjusting indication function can accurately position the electrode plate in an emergency, reduce the number of defibrillation attempts and is more beneficial to saving the life of a patient in time;
(3) the defibrillator with the position adjusting indication function has a protection mechanism, and can disconnect a circuit where the defibrillation electric energy generator is located under the condition that the positions of the two electrode plates are not ideal, so that the damage to a patient is reduced;
(4) the defibrillator with the position adjusting indication function can effectively accommodate electric wires and other connecting wires, and avoids the winding condition caused by too many wires;
(5) the defibrillator with the position adjusting indication, provided by the invention, has the advantages that the structure is simplified, the cost is reduced, and the defibrillator is more convenient to carry;
(6) the defibrillator with the position adjusting indication can assist in judging the charging voltage during defibrillation, so that the charging voltage can meet the requirement of human defibrillation and the damage to a patient is reduced;
(7) the defibrillator with the position adjusting indication function provided by the invention has the advantages of simple structure, good use effect, good economical efficiency and good practicability.
Drawings
Figure 1 is a schematic diagram of a defibrillator with position adjustment indication according to an embodiment of the present invention;
FIG. 2 is a pin diagram of single chip microcomputer STC89C51 according to an embodiment of the present invention;
reference numerals:
1. an electrode sheet; 2. a signal lamp; 3. an article placement slot; 4. and an LED display screen.
Detailed Description
This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result.
The terms in upper, lower, left, right and the like in the description and the claims are combined with the drawings to facilitate further explanation, so that the application is more convenient to understand and is not limited to the application.
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1:
a defibrillator with position adjustment indication comprises a human body impedance measuring device, an electrode plate 1 and a signal lamp 2, wherein the electrode plate 1 and the signal lamp 2 are respectively in circuit connection with the human body impedance measuring device, and when the human body impedance measuring device measures impedances in different intervals, the signal lamp 2 sends signals of different colors.
In embodiment 1, the device for measuring the impedance of the human body may adopt the prior art, and apply a high-frequency low-current excitation signal to the human body, then obtain a thoracic impedance signal corresponding to the excitation signal, and digitally collect the thoracic impedance signal. After the human body impedance value is detected, the color of the signal lamp 2 corresponding to the impedance value is preset, an interval signal corresponding to the signal lamp 2 is correspondingly given, and then the signal lamp 2 is lightened; according to different colors of the signal lamp 2, whether the two electrode plates 1 are in the best positions or not is judged, the position between the two electrode plates 1 is adjusted according to the condition, and the purpose of improving the defibrillation success rate is finally achieved.
Example 2:
substantially similar to example 1, except that: the human body impedance measuring device comprises a direct current generator and an alternating current generator, and the direct current generator and the alternating current generator are respectively connected with the electrode plate 1 through circuits of a control switch. The defibrillator with the position adjusting indication function further comprises a defibrillation electric energy generator, the defibrillation electric energy generator is respectively connected with the direct current generator and the alternating current generator in parallel, and the defibrillation electric energy generator, the direct current generator and the alternating current generator are in signal connection with the electrode plate 1 through the three-gear toggle switch.
In embodiment 2, the defibrillation operation is performed after the impedance of the human body is measured by adjusting the gear setting, so that the finally measured data is more accurate.
Example 3:
substantially similar to example 2, except that: as a preferred scheme, the defibrillation electric energy generator is provided with an electromagnetic switch in series, and the electromagnetic switch is electrically connected with the signal lamp 2.
In embodiment 3, the signal lamp 2 controls the on/off of the circuit where the defibrillation electric energy generator is located, and under the condition that the two electrode plates 1 are attached and placed at positions where the human body resistance value is higher than a certain threshold value, the signal lamp 2 emits abnormal bright colors, and controls the electromagnetic switch of the defibrillation electric energy generator to be turned off according to the circuit signal, so that the defibrillation electric energy generator cannot work even if the gear is adjusted to the circuit where the defibrillation electric energy generator is located. This can effectively prevent the defibrillation operation under the condition that the positions of the two electrode pads 1 are seriously deviated.
Example 4:
the specific method for measuring the resistance of the human body impedance measuring device is as follows:
s1: attaching a pair of electrode plates 1 to the indication position of human body defibrillation;
s2: controlling a toggle switch to enable the electrode plate 1 to be in circuit connection with an alternating current generator;
s3: the capacitance of the electrode sheet 1 at this attachment position is measured:
wherein: rbIs a body resistance value, RsFor the resistance values of the series of devices, theta is the phase difference and omega is the angular frequency
T is the time of measurement, and T is the period of the input signal; f is the frequency of the input signal;
s4: controlling the toggle switch to disconnect the alternating current generator, connecting the direct current generator with the electrode plate 1, and measuring the impedance of the electrode plate 1 under the fitting position:
where C is the capacitance measured in S3.
In embodiment 4, the impedance of the human body can be measured by using a common component, and the measured value is more accurate.
In embodiments 1 to 4, a single chip microcomputer is used for transmitting signals and controlling the signal lamp 2, the electromagnetic valve and the like, the model of the single chip microcomputer is STC89C51, and pin diagrams of the single chip microcomputer are shown in FIG. 2. A plurality of impedance intervals are preset through a single chip microcomputer, and the signal lamp 2 is correspondingly controlled to emit light with different colors in different impedance intervals measured by human body impedance; and the electromagnetic valve is controlled to be switched off when the defibrillation electric energy generator is in an abnormal interval, so that the defibrillation electric energy generator is prevented from working at the moment.
Example 5:
a defibrillation method of a defibrillator with position adjustment indication is based on the defibrillator with position adjustment indication, and comprises the following steps:
t1: attaching a pair of electrode plates 1 to the indication position of human body defibrillation;
t2: measuring the impedance of the electrode plate 1 at the fitting position;
t3: controlling the color change of the signal lamp 2 according to the acquired impedance value, wherein the color comprises a normal color and an abnormal color;
t4: the signal lamp 2 starts defibrillation work under the condition of normal color;
t5: and under the condition of abnormal color, the signal lamp 2 redetermines the joint position of the electrode plate 1 until the signal lamp 2 changes to normal color, and the defibrillation work is started.
As a preferred embodiment, the color of the signal lamp 2 includes three colors of red, yellow and green, green corresponds to the impedance normal interval, yellow is the abnormal interval, and red is the serious abnormal interval.
As a preferred embodiment, the calculation method of the charging voltage value U is as follows:
wherein Z isMeasuringFor measuring body impedance, ZPreparation ofImpedance set for pre-defibrillator, W is set defibrillation energy, ZOutput ofIs the output impedance of the defibrillator, C1Is the capacitance value of the defibrillator.
The working principle is as follows: firstly, adjusting a gear to an alternating current generator circuit to be conducted, then selecting two electrode plates 1 with different sizes according to a defibrillation subject, attaching the two electrode plates 1 to the chest of a human body according to an instruction, then adjusting the gear to a direct current generator circuit to be conducted, measuring the impedance of the human body by the method in the embodiment 4, judging whether the positions of the two electrode plates 1 are normal, abnormal or seriously abnormal at the moment according to a signal lamp 2, and enabling the corresponding signal lamp 2 to be green, yellow and red; under the condition of abnormity or serious abnormity, adjusting the positions of the two electrode plates 1 until the electrode plates become normal, and then adjusting the gears to the defibrillation electric energy generator to perform defibrillation work; in an emergency, the defibrillation operation can be performed even if the two electrode pads 1 are abnormal. When serious abnormality occurs, the circuit where the defibrillation electric energy generator is located is disconnected, and the defibrillation electric energy generator is prevented from working at the moment.
During defibrillation work, calculating a charging voltage value according to the method in the embodiment 5 to obtain a voltage needing to be charged at the moment, and then performing defibrillation work; the charging voltage value is displayed through the LED display screen 4.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (10)
1. The defibrillator with the position adjusting indication function is characterized by comprising a human body impedance measuring device, an electrode plate (1) and a signal lamp (2), wherein the electrode plate (1) and the signal lamp (2) are respectively in circuit connection with the human body impedance measuring device, and when the human body impedance measuring device measures impedances in different intervals, the signal lamp (2) sends signals of different colors.
2. The defibrillator with the position adjustment indication as claimed in claim 1, wherein the body impedance measuring device comprises a DC current generator and an AC current generator, and the DC current generator and the AC current generator are respectively in circuit connection with the electrode plate (1) through a control switch.
3. The defibrillator with the position adjustment indication as claimed in claim 2, wherein the defibrillator with the position adjustment indication further comprises a defibrillation power generator, the defibrillation power generator is respectively connected with the DC power generator and the AC power generator in parallel, and the defibrillation power generator, the DC power generator and the AC power generator are in signal connection with the electrode plate (1) through a three-gear toggle switch.
4. The defibrillator with the indication of the position adjustment as claimed in claim 3, wherein the defibrillation power generator is provided with an electromagnetic switch in series, and the electromagnetic switch is electrically connected with the signal lamp (2).
5. The defibrillator with the indication of the position adjustment of claim 1, wherein the defibrillator with the indication of the position adjustment is disposed in a work box, and the work box further comprises a connecting line placement slot and an item placement slot (3).
6. The defibrillator with the position adjustment indication as claimed in claim 5, wherein the electrode pads (1) comprise three electrode pads (1) having successively larger sizes, and the three electrode pads (1) are placed in the item placement slot (3) in an unused state.
7. The defibrillator with position adjustment indication of claim 1, wherein the specific method of the body impedance measuring device measuring resistance is as follows:
s1: attaching a pair of electrode plates (1) to the indication position of human body defibrillation;
s2: controlling a toggle switch to enable the electrode plate (1) to be in circuit connection with an alternating current generator;
s3: measuring the capacitance of the electrode sheet (1) at the fitting position:
wherein: rbIs a body resistance value, RsFor the resistance values of the series of devices, theta is the phase difference and omega is the angular frequency
T is the time of measurement, and T is the period of the input signal; f is the frequency of the input signal;
s4: control toggle switch makes alternating current generator disconnection, and direct current generator intercommunication electrode slice (1), measures the impedance of electrode slice (1) under this laminating position:
where C is the capacitance measured in S3.
8. A method of defibrillation with position adjustment indication in a defibrillator according to any of claims 1 to 7, comprising the steps of:
t1: attaching a pair of electrode plates (1) to the indication position of human body defibrillation;
t2: measuring the impedance of the electrode plate (1) at the fitting position;
t3: controlling the color change of the signal lamp (2) according to the acquired impedance value, wherein the colors comprise normal colors and abnormal colors;
t4: the signal lamp (2) starts defibrillation work under the condition of normal color;
t5: and under the condition of abnormal color, the signal lamp (2) redetermines the bonding position of the electrode plate (1) until the signal lamp (2) changes to normal color, and starts defibrillation work.
9. The method of defibrillation of the defibrillator with the indication of the position adjustment of claim 8, wherein the color of the signal lamp (2) includes three colors of red, yellow and green, green corresponding to the impedance normal interval, yellow the abnormal interval and red the severe abnormal interval.
10. The method of defibrillation of the defibrillator with position adjustment indication of claim 9, wherein the charging voltage value U is calculated as follows:
wherein Z isMeasuringFor measuring body impedance, ZPreparation ofImpedance set for pre-defibrillator, W is set defibrillation energy, ZOutput ofIs the output impedance of the defibrillator, C1Is the capacitance value of the defibrillator.
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