WO2022237294A1 - State detection and control device - Google Patents

Abstract

A state detection and control device for detecting the state of the handle of a freezing instrument. At least two electrodes are provided on the surface of the handle of the freezing instrument close to an area to be frozen. The device comprises: providing an excitation electrical signal to at least one pair of electrodes (22); acquiring an output electrical signal of the pair of electrodes (24); calculating, according to the amplitude of the excitation electrical signal and the amplitude of the output electrical signal, an impedance value corresponding to the electrodes (26); and determining the state of the handle according to the change of the impedance value in a preset monitoring period (28). The state of the handle of the freezing instrument is determined directly by measuring the impedance value corresponding to the electrodes in contact with the area to be frozen, so that the state of the handle of the freezing instrument can be detected more promptly, accurately, and comprehensively, thereby improving the intelligence, convenience, and safety of the freezing instrument.

Description

State detection and control device

This application claims the priority of the Chinese patent application with the application number 2021104996882 and the application name "Status Detection and Control Device" filed with the China Patent Office on May 8, 2021, the entire contents of which are incorporated herein by reference.

technical field

The application belongs to the technical field of medical devices, and in particular relates to a state detection and control device.

Background technique

With the improvement of people's living standards, obesity, poor body shape, skin pigmentation, acne and other body and skin problems caused by excessive oil secretion by sebaceous glands have gradually increased the demand for various bodybuilding and beauty products. Freezing can achieve effects such as weight loss, depigmentation, and acne removal. However, in the process of freezing treatment, overtreatment may occur, resulting in skin damage, or less than ideal therapeutic effect and obvious side effects. For example, freezing fat can cause frostbite to the skin, freezing to remove pigment leads to depigmentation, and freezing to remove acne leads to incomplete removal of acne.

In summary, although freezing technology can achieve the effect of reducing fat, inhibiting pigment production, and treating acne, it is difficult to avoid skin frostbite during the process of freezing and melting fat, excessive treatment of skin pigmentation, or effective acne treatment. Effect.

Contents of the invention

Based on this, it is necessary to address the technical problems in the above-mentioned background technology and provide a state detection and control device that can detect the state of the refrigeration equipment in real time during the freezing process of the area to be frozen, so as to effectively improve the intelligence of the freezing treatment of the refrigeration equipment, Safety and reliability.

In order to achieve the above purpose and other purposes, the first aspect of the present application provides a state detection device, which is used to detect the state of the handle of the freezer, so as to improve the intelligence, convenience and safety of the freezer. The handle of the freezer At least two electrodes are arranged on the surface close to the area to be frozen, and the device includes a controller electrically connected to each of the electrodes, and the controller is configured to:

controlling the excitation source to provide an excitation electrical signal to at least one pair of electrodes;

obtaining output electrical signals of the pair of electrodes;

calculating an impedance value corresponding to the electrode according to the amplitude of the excitation electrical signal and the amplitude of the output electrical signal;

Judging the state of the handle according to the variation of the impedance value within the preset monitoring period, the state of the handle includes being in a normal freezing state, falling off event, non-frozen processing state, displacement event and being in a freezing area Freezing working state;

If the decrease of the impedance value within the preset monitoring period is greater than or equal to the first preset decrement threshold, it is determined that the handle is in the icing working state in the freezing area, wherein the first preset decrement threshold is greater than zero .

In the state detection device in the above-mentioned embodiment, since the impedance value of the area to be frozen under normal conditions should be within a stable impedance range with little change, when the area to be frozen freezes, the local liquid in it will freeze , the phase change of the liquid will cause a sharp change in the conductivity properties, resulting in a sharp and large change in the impedance value measured via the electrode in contact with the area to be frozen. Therefore, the present application arranges a plurality of electrodes on the surface of the handle of the freezer close to the area to be frozen, and provides an excitation electric signal to at least one pair of electrodes, and calculates according to the amplitude of the excitation electric signal and the amplitude of the output electric signal The impedance value corresponding to the electrode is used to judge the state of the handle according to the variation of the impedance value within a preset monitoring period. That is, the present application detects the state of the handle of the freezer by using electrodes to detect changes in the conductivity of the area to be frozen, so as to take corresponding countermeasures in a timely manner and improve the safety and effectiveness of the freezer. In addition, since a plurality of evenly distributed electrodes can be arranged on the surface of the handle of the freezer close to the area to be frozen to comprehensively detect changes in the conductivity of the area to be frozen, avoiding problems caused by the large area of the area to be frozen and uneven temperature distribution. Uniform detection blind spots are generated, resulting in the inability to completely detect all events accurately and in a timely manner. Compared with the traditional method of using the temperature sensor to detect the temperature value of the area to be frozen to indirectly detect the handle status of the freezer, due to the sensitivity of the temperature sensor, a large temperature change is required to identify an effective signal. The impedance value corresponding to the electrode in contact with the freezing area can be used to judge the handle status of the freezer, which can more timely and accurately identify slight changes in the freezing area, so that the handle status of the freezer can be detected more timely, accurately and comprehensively, and improve The intelligence, convenience and safety of the freezer reduce the dependence on the user's operating experience.

In one of the embodiments, the judging the state of the handle according to the variation of the impedance value within the preset monitoring period includes:

Obtain a curve of the impedance value changing with time;

The state of the handle is judged according to the curve.

In the state detection device in the above-mentioned embodiment, since the change of the state of the frozen region will lead to the change of its impedance during the freezing process of the region to be frozen, by obtaining the impedance value corresponding to the electrode in contact with the region to be frozen that changes with time According to the curve, the amount of change of the curve in the preset monitoring period can be obtained according to the curve, so that the handle state of the freezer can be judged in a timely, accurate and comprehensive manner according to the change of the impedance value in the preset monitoring period, so as to improve the freezing efficiency. The intelligence, safety and effectiveness of the instrument.

In one of the embodiments, the judging the state of the handle according to the curve includes:

If the variation of the impedance value within the preset monitoring period is within the range of the preset stable threshold, it is determined that the handle is in a normal freezing state.

In one of the embodiments, the judging the state of the handle according to the curve includes:

If the increase of the impedance value in two adjacent preset monitoring periods is greater than or equal to the first preset increment threshold, it is determined that the handle has fallen off and/or the handle is in an unfrozen state, wherein , the first preset increment threshold is greater than zero.

In one of the embodiments, the judging the state of the handle according to the curve includes:

If within two adjacent preset monitoring periods, the increase of the impedance value in the previous preset monitoring period is greater than or equal to the first preset increment threshold, and within the latter preset monitoring period If the decrease of the impedance value is greater than or equal to the second preset reduction threshold, it is determined that the handle has a displacement event and/or the handle is in a non-refrigerated state, wherein the first preset reduction threshold , the second preset decrement thresholds are all greater than zero.

In one of the embodiments, the excitation electric signal includes at least one of a direct current signal, an alternating current signal or a pulse electric signal whose amplitude is within a preset range.

In one of the embodiments, the providing the excitation electrical signal to at least one pair of electrodes comprises:

providing an excitation electrical signal to an adjacent pair of electrodes; and/or

An electrode is selected as a common electrode, and an electrode pair is formed with different electrodes, so as to provide an excitation electric signal to each of the electrode pairs.

In one of the embodiments, the cryo-apparatus includes at least one of a cryo-fat dissolving instrument, a cryo-pigmentation freckle-removing instrument, and a cryo-acne treatment instrument.

The second aspect of the present application provides a state monitoring device, which is used to detect and control the working state of the handle of the freezer, so as to improve the intelligence, convenience and safety of the freezer. The handle of the freezer is close to the area to be frozen. The surface is provided with at least two electrodes, the device comprising a controller electrically connected to each of the electrodes, the controller being configured to:

controlling the excitation source to provide an excitation electrical signal to at least one pair of electrodes;

obtaining output electrical signals of the pair of electrodes;

Calculate the impedance value corresponding to the electrode according to the amplitude of the excitation electrical signal and the amplitude of the output electrical signal, and control the working state of the handle according to the variation of the impedance value within the preset monitoring period, and the control unit The working state of the handle includes controlling the cooling temperature of the handle to remain unchanged and controlling the handle to perform preset actions, and the preset actions include at least one of stopping cooling, lifting, raising the temperature, turning off the power supply, and recording movement information kind;

If the decrease in the impedance value within the preset monitoring period is greater than or equal to the first preset decrement threshold, control the handle to lift up and/or control the handle to increase the temperature, wherein the first preset Let the decrement threshold be greater than zero.

In the state monitoring device in the above embodiment, the working state of the handle of the freezer is controlled by using electrodes to detect changes in the impedance value of the area to be frozen, and corresponding countermeasures are taken in time to improve the safety and effectiveness of the freezer. sex. Compared with the traditional method of using the temperature sensor to detect the temperature value of the area to be frozen to indirectly detect the handle status of the freezer, due to the sensitivity of the temperature sensor, a large temperature change is required to identify an effective signal. The impedance value corresponding to the electrode in contact with the freezing area can be used to judge the state of the handle of the freezer, which can more timely and accurately identify slight changes in the area to be frozen, so that the working status of the handle of the freezer can be controlled more timely and accurately, and the freezer can be improved. Intelligence, ease of use and safety.

In one of the embodiments, the controlling the working state of the handle according to the variation of the impedance value within the preset monitoring period includes:

Obtain a curve of the impedance value changing with time;

The working state of the handle is controlled according to the curve.

In the state monitoring device in the above-mentioned embodiment, since the change of the state of the frozen region will cause the change of its impedance during the freezing process of the region to be frozen, by obtaining the impedance value corresponding to the electrode in contact with the region to be frozen that changes with time Curve, so as to obtain the variation of the curve in the preset monitoring period according to the curve, so as to control the working state of the handle according to the variation of the impedance value, and improve the safety and effectiveness of the freezer.

In one of the embodiments, the controlling the working state of the handle according to the curve includes:

If the variation of the impedance value within the preset monitoring period is within the range of the preset stable threshold, the cooling temperature of the handle is controlled to remain unchanged.

In one of the embodiments, the controlling the working state of the handle according to the curve includes:

If the increase of the impedance value in two adjacent preset monitoring periods is greater than or equal to the first preset increment threshold, the handle is controlled to perform the first preset action, wherein the first preset increment Volume threshold is greater than zero.

In one of the embodiments, the controlling the working state of the handle according to the curve includes:

If within two adjacent preset monitoring periods, the increase of the impedance value in the previous preset monitoring period is greater than or equal to the first preset increment threshold, and within the latter preset monitoring period If the reduction of the impedance value is greater than or equal to the second preset reduction threshold, the handle is controlled to perform a third preset action, and the first preset reduction threshold and the second preset reduction threshold are both Greater than zero.

In one of the embodiments, controlling the handle to perform the first preset action includes:

Control the handle to stop refrigeration and/or alarm.

In one of the embodiments, controlling the handle to perform a third preset action includes:

Control the handle to turn off the power supply and/or record movement information.

In one of the embodiments, the cryo-apparatus includes at least one of a cryo-fat dissolving instrument, a cryo-pigmentation freckle-removing instrument, and a cryo-acne treatment instrument.

The third aspect of the present application provides a state detection device, which is used to detect the state of the handle of the freezer, so as to improve the intelligence, convenience and safety of the freezer. The device includes:

There are at least two electrodes, and they are all arranged on the surface of the freezer handle close to the area to be frozen, for contacting the area to be frozen;

An excitation electrical signal source, connected to at least one pair of electrodes, for providing an excitation electrical signal to the pair of electrodes;

an output electrical signal acquisition unit, connected to the pair of electrodes, for acquiring output electrical signals of the pair of electrodes;

The handle working state judging unit is connected to both the excitation electrical signal source and the output electrical signal acquisition unit, and is configured to calculate the impedance corresponding to the electrode according to the amplitude of the excitation electrical signal and the amplitude of the output electrical signal value, and

Judging the state of the handle according to the variation of the impedance value within the preset monitoring period, the state of the handle includes being in a normal freezing state, falling off event, non-frozen processing state, displacement event and being in a freezing area Freezing working state;

If the decrease of the impedance value within the preset monitoring period is greater than or equal to the first preset decrement threshold, the handle working state judging unit determines that the handle is in the freezing working state of the freezing area, and the first preset The decrement threshold is greater than zero.

In the state detection device in the above-mentioned embodiment, by arranging a plurality of electrodes on the surface of the handle of the freezer close to the area to be frozen, and then providing an excitation electric signal to at least one pair of electrodes, and obtaining the pair of electrodes through the output electric signal acquisition unit For the output electrical signal of the electrode, use the handle working state judging unit to calculate the impedance value corresponding to the electrode in contact with the area to be frozen according to the amplitude of the excitation electrical signal and the amplitude of the output electrical signal, so that according to the preset monitoring period The change amount of the impedance value judges the state of the handle. That is, the state of the handle of the freezer is detected by using electrodes to detect changes in the conductivity of the region to be frozen, so that corresponding countermeasures can be taken in a timely manner, and the intelligence, safety and effectiveness of use of the freezer can be improved. In addition, since a plurality of evenly distributed electrodes can be arranged on the surface of the handle of the freezer close to the area to be frozen to comprehensively detect changes in the conductivity of the area to be frozen, avoiding problems caused by the large area of the area to be frozen and uneven temperature distribution. Uniform detection blind spots are generated, resulting in the inability to completely detect all events accurately and in a timely manner. Compared with the traditional method of using the temperature sensor to detect the temperature value of the area to be frozen to indirectly detect the handle status of the freezer, due to the sensitivity of the temperature sensor, a large temperature change is required to identify an effective signal. The impedance value of the area can be used to judge the state of the handle of the freezer, which can more timely and accurately identify slight changes in the area to be frozen, so that the state of the handle of the freezer can be detected more timely, accurately and comprehensively, and the intelligence of the freezer can be improved. , Ease of use, safety and effectiveness.

In one of the embodiments, the handle working state judging unit is further configured to:

Obtain a curve of the impedance value changing with time;

The state of the handle is judged according to the curve.

In one of the embodiments, the judging the state of the handle according to the curve includes:

If the variation of the impedance value within the preset monitoring period is within the range of the preset stable threshold, it is determined that the handle is in a normal freezing state.

In one of the embodiments, the judging the state of the handle according to the curve includes:

If the increase of the impedance value in two adjacent preset monitoring periods is greater than or equal to the first preset increment threshold, it is determined that the handle has fallen off and/or the area to be frozen is not frozen, Wherein, the first preset increment threshold is greater than zero;

In one of the embodiments, the judging the state of the handle according to the curve includes:

If within two adjacent preset monitoring periods, the increase of the impedance value in the previous preset monitoring period is greater than or equal to the first preset increment threshold, and the latter preset monitoring If the decrease of the impedance value within a period is greater than or equal to the second preset decrease threshold, it is determined that the handle has been displaced and/or the handle is in a non-refrigerated state, wherein the first preset decrease Both the volume threshold and the second preset decrement threshold are greater than zero.

In one of the embodiments, the state detection device also includes:

Cooling surface for contacting the area to be frozen;

Wherein, the cooling surface includes a plane and/or an arc surface.

In one of the embodiments, the electrode is arranged on the cooling surface, and the electrode is configured as:

columnar, the surface of the electrode close to the area to be frozen is higher than the surface of the handle close to the area to be frozen; or

Planar shape, the surface of the electrode close to the area to be frozen is flush with the surface of the handle close to the area to be frozen.

In one of the embodiments, the handle further includes an antifreeze film, and the antifreeze film is arranged between the cooling surface and the area to be frozen.

In one of the embodiments, the antifreeze film includes a plurality of electrode through holes, and the electrodes are exposed to the electrode through holes.

In one of the embodiments, the excitation electric signal includes at least one of a direct current signal, an alternating current signal or a pulse electric signal whose amplitude is within a preset range.

In one of the embodiments, each of the electrodes is distributed in a uniform array, wherein two adjacent electrodes form an electrode pair, and/or

One electrode is a common electrode, and forms electrode pairs with different electrodes, so as to provide excitation electrical signals to each of the electrode pairs.

In one of the embodiments, the cryo-apparatus includes at least one of a cryo-fat dissolving instrument, a cryo-pigmentation freckle-removing instrument, and a cryo-acne treatment instrument.

The fourth aspect of the present application provides a state monitoring device, including any state detection device described in the embodiments of the present application, which is used to detect and control the working state of the handle of the freezer, so as to effectively freeze local areas and improve It ensures the intelligence, safety and effectiveness of the freezer.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. Those of ordinary skill in the art can also obtain the drawings of other embodiments according to these drawings without any creative effort.

FIG. 1 is a schematic flowchart of a state detection device provided in the first embodiment of the present application;

FIG. 2 is a schematic flow diagram of a part of a state detection device provided in the second embodiment of the present application;

FIG. 3 is a schematic flow diagram of a part of a state detection device provided in the third embodiment of the present application;

FIG. 4 is a schematic flow diagram of a part of a state detection device provided in the fourth embodiment of the present application;

FIG. 5 is a schematic flow diagram of a part of a state detection device provided in the fifth embodiment of the present application;

FIG. 6 is a schematic flowchart of a state detection device provided in the sixth embodiment of the present application;

FIG. 7 is a schematic flowchart of a state monitoring device provided in the seventh embodiment of the present application;

FIG. 8 is a schematic flow diagram of a part of a state monitoring device provided in the eighth embodiment of the present application;

FIG. 9 is a partial flow diagram of a state monitoring device provided in the ninth embodiment of the present application;

FIG. 10 is a schematic flowchart of a part of a state monitoring device provided in the tenth embodiment of the present application;

Fig. 11 is a schematic flow diagram of a part of a state monitoring device provided in the eleventh embodiment of the present application;

FIG. 12 is a schematic structural diagram of a state detection device provided in the twelfth embodiment of the present application;

Fig. 13 is a schematic structural view of a handle of a freezer provided in the thirteenth embodiment of the present application;

Fig. 14a is a top view structural schematic diagram of a handle of a freezer provided in an embodiment of the present application;

Fig. 14b is a top view structure diagram of a handle of a freezer provided in another embodiment of the present application;

Fig. 15 is a schematic exploded view of a handle of a freezer provided in an embodiment of the present application.

Detailed ways

In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Preferred embodiments of the application are shown in the accompanying drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the application more thorough and comprehensive.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the case of using "comprising", "having", and "comprising" described herein, another element may also be added unless an explicit qualifying term such as "only", "consisting of" etc. is used . Unless mentioned to the contrary, the terms of a singular form may include a plural form and shall not be construed as one in number.

It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present application.

In this application, unless otherwise clearly specified and limited, terms such as "connected" and "connected" should be interpreted in a broad sense, for example, they can be directly connected or indirectly connected through an intermediary, and they can be internally connected to each other. connectivity or interaction between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

In the process of freezing and melting the skin with a cryofat dissolving instrument, since the operating object is the skin of a living object, it is difficult to monitor and judge the actual working status of the cryoapparatus, resulting in blindness and low efficiency of the operation, and prone to skin frostbite event.

Hyperpigmentation of the skin can lead to dark areas of the skin such as freckles, age spots, café-au-lait spots or bags under the eyes. Temporary cooling or freezing of skin tissue results in hypopigmentation of skin tissue, and hypopigmentation following cooling or freezing of the skin may result from decreased melanosome production, destruction of melanocytes, or transport of melanosomes into lower epidermal regions The transfer of keratinocytes is inhibited, therefore, the hypopigmentation caused by freezing the skin can be chronic or permanent. Freezing can inhibit pigment production or apoptotic pigment cells. In the traditional treatment process, long-term freezing of the pigment will lead to the apoptosis of the pigment cells. This excessive treatment method will lead to the apoptosis of the melanocytes, and clinically, it will show depigmentation phenomena such as white spots and even pigment loss.

Eccrine glands in the skin lubricate or cool the body's skin or hair follicles by expelling a water-based, oily, or waxy substance through the skin pores or hair follicles. Overproduction or oversecretion of these substances by certain eccrine glands such as the sebaceous and sweat glands may lead to skin disorders. Treating acne by freezing, because the operation object is the skin of a living object, it is difficult to monitor and judge the actual working status of the cryogenic acne treatment device, resulting in blindness and low efficiency of the operation, and often incomplete acne treatment.

Therefore, the present application provides a state detection and control device for detecting the state of the handle of the freezer, so as to improve the intelligence, safety and reliability of the freezer.

Please refer to Figure 1. In one embodiment of the present application, a state detection device is provided for detecting the state of the handle of the freezer, so as to improve the intelligence, convenience and safety of the freezer. The freezer At least two electrodes are arranged on the surface of the handle close to the area to be frozen, and the device includes a controller electrically connected to each of the electrodes, and the controller is configured to at least perform the following steps:

Step 22: controlling the excitation source to provide an excitation electrical signal to at least one pair of electrodes;

Step 24: Acquiring output electrical signals of the pair of electrodes;

Step 26: Calculate the impedance value corresponding to the electrode according to the amplitude of the excitation electrical signal and the amplitude of the output electrical signal;

Step 28: Judging the state of the handle according to the amount of change in the impedance value within the preset monitoring period, the state of the handle includes being in a normal freezing state, falling off, not being frozen, a displacement event, and It is in the icing working state of the freezing area; if the decrease of the impedance value within the preset monitoring period is greater than or equal to the first preset decrement threshold, it is determined that the handle is in the icing working state of the freezing area, wherein the first A predetermined decrement threshold is greater than zero.

Specifically, since the impedance value of the area to be frozen under normal conditions should be within a stable impedance range with little change, when the frozen area such as skin or artificial skin freezes, the local liquid in it will freeze, because the liquid The phase change will cause a sharp change in the conductivity characteristics, resulting in a sharp change in its impedance value and a large amount of change. Therefore, the present application arranges a plurality of electrodes on the surface of the freezer handle close to the area to be frozen, and provides an excitation electric signal such as an excitation current signal to at least one pair of electrodes. According to the amplitude of the excitation current signal and the output electric signal such as It is the amplitude of the output voltage signal to calculate the impedance value corresponding to the electrode, so as to judge the state of the handle according to the change of the impedance value within the preset monitoring period, wherein the excitation electric signal includes a direct current whose amplitude is within a preset range At least one of a signal, an alternating current signal or a pulse electric signal, for example, the excitation electric signal may be a constant amplitude direct current signal, and the electric signal includes a current signal or a voltage signal. That is, the present application detects the state of the handle of the freezer by detecting the change of the impedance value corresponding to the electrode in contact with the area to be frozen, so as to take corresponding countermeasures in a timely manner, avoid frostbite events in the frozen area, and improve the intelligence of the freezer , Use safety and reliability. In addition, a plurality of electrodes distributed in a uniform array can be arranged on the surface of the handle of the freezer close to the area to be frozen to comprehensively detect changes in the impedance value of the area to be frozen, and to avoid problems caused by large area of the area to be frozen and uneven temperature distribution. Uniform detection blind spots are generated, resulting in the inability to completely detect all events accurately and in a timely manner. Compared with the traditional method of using the temperature sensor to detect the temperature value of the area to be frozen to indirectly detect the handle status of the freezer, due to the sensitivity of the temperature sensor, a large temperature change is required to identify an effective signal. This application directly uses the detected impedance Value to judge the handle status of the freezer, which can more timely and accurately identify slight changes in the freezing area, so that the handle status of the freezer can be detected more timely, accurately and comprehensively, improving the intelligence and safety of the freezer and effectiveness, and reduce reliance on user experience.

As an example, in one embodiment of the present application, the cryo-apparatus includes at least one of a cryo-fat dissolving instrument, a cryo-pigmentation freckle-removing instrument, and a cryo-acne treatment instrument. In the process of using the cryofat dissolving instrument to freeze and melt fat, the electrode is used to detect the change of the conductivity of the area to be frozen to detect the handle status of the cryofat dissolving instrument, so as to take corresponding countermeasures in time to avoid frostbite incidents. In the process of using the frozen pigment freckle removal instrument to perform frozen pigment freckle removal, the electrode is used to detect the change in the conductivity of the area to be frozen to detect the handle status of the frozen pigment freckle removal instrument, and the cooling output can be terminated after detection of freezing in the frozen area to avoid excessive The treatment causes side effects caused by uneven skin tone, and improves the safety and reliability of the frozen pigment freckle removal instrument. In the process of cryotherapy acne with the cryoacne treatment device, the electrode is used to detect the change of the conductivity of the area to be frozen to detect the state of the handle of the cryoacne treatment device, so as to maintain the refrigeration temperature after detecting that the frozen area is frozen Preset the time to freeze acne, avoid incomplete acne treatment, and improve the safety and reliability of the frozen acne treatment device.

Specifically, in general, the impedance value of the frozen treated region entering a normal and stable state should be maintained within a preset stable threshold range, for example, remain unchanged. When the frozen area freezes, the local liquid in the frozen area will freeze, and the phase change of the liquid will cause a sharp change in the electrical conductivity, resulting in a sharp decrease in the measured impedance value and a large amount of change. For example, the preset monitoring period can be set to 0s-3s. If the decrease in the impedance value within the preset monitoring period is greater than or equal to the first preset decrement threshold, it is determined that the handle is in the icing working state in the freezing area. Wherein, the first preset decrement threshold is greater than zero. Under normal circumstances, when the handle of the freezer detects icing events in the freezing area, it will immediately stop further reducing the temperature or take measures to increase the temperature slightly to avoid expanding the scope of frostbite.

Further, please refer to FIG. 2. In one embodiment of the present application, the judging the state of the handle according to the variation of the impedance value within a preset monitoring period includes:

Step 282: Obtain the curve of the impedance value changing with time, the state of the handle includes being in the normal freezing state, falling off event, not in the freezing state, shifting event, and freezing working state in the freezing area;

Step 284: Judging the state of the handle according to the curve, if the decrease of the impedance value within the preset monitoring period is greater than or equal to the first preset reduction threshold, then it is determined that the handle is in the working state of icing in the freezing area , wherein the first preset decrement threshold is greater than zero. .

Specifically, since the change of the state of the frozen region will lead to the change of its impedance during the freezing process of the region to be frozen, by obtaining the curve of the impedance value corresponding to the electrode in contact with the region to be frozen as a function of time, it can be obtained according to the curve Preset the change of the curve in the monitoring period, so as to judge the handle status of the freezer timely, accurately and comprehensively according to the change of impedance value in the freezing area, avoid frostbite events in the freezing area, and improve the intelligence and use of the freezer Safety and reliability.

Further, please refer to FIG. 3 , in an embodiment of the present application, the judging the state of the handle according to the curve includes:

Step 2841: If the variation of the impedance value within the preset monitoring period is within the preset stable threshold range, it is determined that the handle is in a normal freezing treatment state; if the decrease of the impedance value within the preset monitoring period is greater than or equal to If the first preset decrement threshold is used, then it is determined that the handle is in the working state of icing in the freezing area, wherein the first preset decrement threshold is greater than zero.

Specifically, under normal circumstances, the impedance value of the cryoprocessed into a normal and stable state should be maintained within a preset stable threshold range, for example, remain unchanged. Therefore, if it is monitored that the variation of the impedance value corresponding to the electrode in contact with the area to be frozen within the preset monitoring period is within the preset stable threshold range, it is determined that the handle is in a normal freezing treatment state, or that the handle is in a normal working state .

Further, please refer to FIG. 4. In one embodiment of the present application, the judging the state of the handle according to the curve includes:

Step 2842: If the increase of the impedance value in two adjacent preset monitoring periods is greater than or equal to the first preset increment threshold, it is determined that the handle has fallen off and/or the handle is not frozen state, wherein the first preset increment threshold is greater than zero.

Specifically, in general, if the increase in the impedance value corresponding to the electrode in contact with the area to be frozen within the preset monitoring period is greater than or equal to the first preset increment threshold, it is determined that the handle is in an abnormal working state, wherein, The first preset increment threshold is greater than zero. Generally, the first preset increment threshold is significantly greater than the variation of the impedance value of the region to be frozen within the preset stable threshold range. That is, during the actual freezing process of the freezing area, if it is detected that the impedance value of the area being frozen suddenly increases sharply, it is determined that the handle is in an abnormal working state. If the measured impedance value increases sharply during the preset monitoring period, and the increase in impedance value in two consecutive preset monitoring periods is greater than or equal to the first preset increment threshold, it is determined that the handle has fallen off and/or The handle is in an unfrozen state, wherein the first preset increment threshold is greater than zero.

Further, please refer to FIG. 5. In one embodiment of the present application, the judging the state of the handle according to the curve includes:

Step 2843: If within two adjacent preset monitoring periods, the increase of the impedance value in the previous preset monitoring period is greater than or equal to the first preset increment threshold, and the latter preset If the decrease in the impedance value within the monitoring period is greater than or equal to the second preset reduction threshold, it is determined that the handle has a displacement event and/or the handle is in an unfrozen state, wherein the first preset Both the decrement threshold and the second preset decrement threshold are greater than zero.

Specifically, if within two consecutive preset monitoring periods, the impedance value measured in the previous monitoring period increases sharply and the impedance value measured in the subsequent monitoring period decreases sharply, and even returns to a stable freezing treatment state, then it is determined that the The handle has been displaced, and/or the handle is not frozen.

As an example, input an excitation current I to a pair of electrodes on the handle of the freezer near the side surface of the area to be frozen. The amplitude of the excitation current I is 100nA to 10uA. The output voltage signal V is obtained through this pair of electrodes, based on Ohm’s law R=V /I, calculate the impedance value R between the electrodes. During the process of this pair of electrodes being in contact with the skin of the fat-reducing area and undergoing freezing treatment, the skin impedance value R is 1K-10M. When the handle of the cryostat is lifted and detached from the skin surface, the measured impedance value will increase sharply and approach the impedance value of the atmosphere between the two electrodes. The preset monitoring period can be set to 0s-3s. If preset The skin impedance value measured during the monitoring period increases sharply, and the increase in the skin impedance value in two consecutive preset monitoring periods is greater than or equal to the first preset increment threshold, then it is determined that the handle has fallen off and/or The skin is in a non-frozen state, wherein the first preset increment threshold is greater than zero. When the skin is frozen, the local liquid in the skin will freeze, and the phase change of the liquid in the skin will cause a sharp change in the electrical conductivity of the skin, resulting in a sharp decrease in the skin impedance value and a large amount of change. For example, the preset monitoring period can be set to 0s-3s, and if the decrease in the skin impedance value within the preset monitoring period is greater than or equal to the first preset reduction threshold, it is determined that the skin is in a frozen state, wherein the The first preset decrement threshold is greater than zero. Under normal circumstances, when the handle of the freezer detects a skin freezing event, it will immediately stop further lowering the temperature or take measures to increase the temperature slightly to avoid expanding the scope of skin frostbite. When the handle of the freezer is displaced, the measured impedance value will increase sharply, but because the handle is placed in another freezing area, the impedance value will decrease instantaneously. Therefore, the preset monitoring period can be set to 0s-3s , if in two consecutive preset monitoring periods, the skin impedance value measured in the previous monitoring period increases sharply and the skin impedance value measured in the latter monitoring period decreases sharply, and even returns to a stable state of cryotreatment, then It is determined that a displacement event has occurred in the handle and/or the handle is in an unfrozen state. If no one of the above-mentioned shedding events, icing events, and displacement events is detected, it can be preliminarily determined that the handle of the freezer is in a normal working state. In this application, during the operation of the handle of the freezer, the working state of the skin can be judged according to the impedance value of the skin, including at least the non-frozen state, the frozen state or the normal frozen state. If it is detected that the skin is in a frozen state, the handle of the freezer should be controlled in time to stop and continue to cool down, so as to avoid expanding the scope of skin frostbite.

Further, please refer to FIG. 6 , in one embodiment of the present application, providing an excitation electrical signal to at least one pair of electrodes includes:

Step 221: providing an excitation electrical signal to a pair of adjacent electrodes; and/or selecting one electrode as a common electrode, and forming electrode pairs with different electrodes, so as to provide an excitation electrical signal to each of the electrode pairs.

As an example, the electrodes on the side surface of the freezer handle close to the area to be frozen can be arranged in a uniform array, and then two adjacent electrodes can be set to form electrode pairs to provide excitation electrical signals to each electrode pair; one electrode can also be selected as a common electrode , and form electrode pairs with different electrodes respectively, use the common electrode as a common anode or cathode, and provide excitation electric signals to each of the electrode pairs.

Further, please refer to FIG. 7. In one embodiment of the present application, a state monitoring device is provided for detecting and controlling the working state of the handle of the freezer, so as to improve the intelligence, convenience and safety of the freezer. Specifically, the handle of the freezer is provided with at least two electrodes on the surface of the area to be frozen, and the device includes a controller electrically connected to each of the electrodes, and the controller is configured to at least perform the following steps:

Step 32: controlling the excitation source to provide an excitation electrical signal to at least one pair of electrodes;

Step 34: Obtain the output electrical signal of the pair of electrodes;

Step 36: Calculate the impedance value corresponding to the electrode according to the amplitude of the excitation electrical signal and the amplitude of the output electrical signal, and control the working state of the handle according to the variation of the impedance value within the preset monitoring period, so that The control of the working state of the handle includes controlling the cooling temperature of the handle to remain unchanged and controlling the handle to perform preset actions. The preset actions include stopping cooling, lifting, raising the temperature, turning off the power, and recording movement information. At least one of: if the decrease in the impedance value within the preset monitoring period is greater than or equal to the first preset reduction threshold, control the handle to lift and/or control the handle to increase the temperature, wherein, The first preset decrement threshold is greater than zero.

In the state monitoring device in the above-mentioned embodiments, the working state of the handle of the freezer is controlled by using the electrodes to detect the change of the impedance value of the area to be frozen, and corresponding countermeasures are taken in time to avoid frostbite events and improve the performance of the freezer. Use safety and reliability. Compared with the traditional method of using the temperature sensor to detect the temperature value of the area to be frozen to indirectly detect the handle status of the freezer, due to the sensitivity of the temperature sensor, a large temperature change is required to identify an effective signal. The impedance value corresponding to the electrode in contact with the freezing area can be used to judge the state of the handle of the freezer, which can more timely and accurately identify slight changes in the area to be frozen, so that the working status of the handle of the freezer can be controlled more timely and accurately, and avoid accidents caused by accidents. Failure to recognize the characteristic signal and not controlling the handle movement of the freezer in time will result in missing the best protection period and causing unnecessary damage to the user, which can improve the intelligence, convenience and safety of the freezer.

Specifically, if the decrease in the impedance value within the preset monitoring period is greater than or equal to the first preset decrement threshold, it means that the handle of the freezer is frozen, and the handle is controlled to be lifted and/or the handle is controlled to be lifted. Increase the temperature of the handle in an appropriate amount to prevent the handle from continuing to cool down, so as to start the rewarming protection function and avoid increasing the area of frostbite.

In one embodiment of the present application, the cryo-apparatus includes at least one of a cryo-fat dissolving instrument, a cryo-pigmentation freckle-removing instrument, and a cryo-acne treatment instrument.

Further, please refer to FIG. 8. In one embodiment of the present application, a state monitoring device is provided, and the controlling the working state of the handle according to the variation of the impedance value within a preset monitoring period includes:

Step 362: Obtain the curve of the impedance value changing with time, the controlling the working state of the handle includes controlling the cooling temperature of the handle to remain unchanged and controlling the handle to perform a preset action, the preset action includes stopping At least one of cooling, lifting, raising the temperature, turning off the power and recording movement information;

Step 364: Control the working state of the handle according to the curve, if the decrease in the impedance value within the preset monitoring period is greater than or equal to the first preset reduction threshold, control the handle to be lifted and/or Or control the handle to increase the temperature, wherein the first preset decrement threshold is greater than zero.

Specifically, since the change of the state of the frozen region will lead to the change of its impedance during the freezing process of the region to be frozen, by obtaining the curve of the impedance value corresponding to the electrode in contact with the region to be frozen as a function of time, to obtain Preset the variation of the curve in the monitoring period, so as to control the working state of the handle according to the variation of the impedance value, and take corresponding protective measures in time to avoid frostbite events and improve the safety and reliability of the freezer .

Further, please refer to FIG. 9 , in one embodiment of the present application, the controlling the working state of the handle according to the curve includes:

Step 3641: If the variation of the impedance value within the preset monitoring period is within the preset stable threshold range, control the cooling temperature of the handle to remain unchanged; if the decrease of the impedance value within the preset monitoring period is greater than or equal to The first preset decrement threshold is to control the handle to lift up and/or control the handle to increase the temperature, wherein the first preset decrement threshold is greater than zero.

Specifically, if the variation of the impedance value within the preset monitoring period is within the preset stable threshold range, it indicates that the area to be frozen is in a normal frozen state, and the cooling temperature of the handle is controlled to be constant for normal freezing operation. .

Further, please refer to FIG. 10 , in one embodiment of the present application, a state monitoring device is provided, and the controlling the working state of the handle according to the curve includes:

Step 3642: If the increase of the impedance value in two adjacent preset monitoring periods is greater than or equal to the first preset increment threshold, control the handle to perform a first preset action, wherein the first The preset delta threshold is greater than zero.

Specifically, if the increase of the impedance value obtained in two consecutive preset monitoring periods is greater than or equal to the first preset increment threshold, it means that the handle of the freezer is lifted and detached from the surface of the freezing area, and the handle can be controlled to perform the first Preset actions, such as controlling the handle to stop refrigeration and/or alarm.

Further, please refer to FIG. 11 , in one embodiment of the present application, a state monitoring device is provided, and the controlling the working state of the handle according to the curve includes:

Step 3643: If within two adjacent preset monitoring periods, the increase of the impedance value in the previous preset monitoring period is greater than or equal to the first preset increment threshold, and the latter preset If the decrease in the impedance value within the monitoring period is greater than or equal to the second preset decrease threshold, the handle is controlled to perform a third preset action, the first preset decrease threshold, the second preset decrease thresholds are greater than zero.

Specifically, if within two adjacent preset monitoring periods, the increase of the impedance value in the previous preset monitoring period is greater than or equal to the first preset increment threshold, and the latter The reduction of the impedance value within the preset monitoring period is greater than or equal to the second preset reduction threshold, and the first preset reduction threshold and the second preset reduction threshold are both greater than zero, indicating that the freezer handle When a displacement event occurs, control the handle to perform a third preset action, such as controlling the handle to turn off the power and/or record movement information, so as to avoid freezing the undesired frozen area; recording movement information is easy to detect The reason for the handle move event.

In the above embodiment, when the handle of the freezer is detached from the surface of the freezing area, the handle is controlled to give an alarm, which can promptly remind the relevant staff to take corresponding measures, and improve the convenience and efficiency of freezing treatment in the freezing area.

Further, please refer to FIG. 12 , in one embodiment of the present application, a state detection device 100 is provided for detecting the working state of the freezer handle 10, the state detection device 100 includes an electrode 12, an excitation electrical signal source 20 1. The output electric signal acquisition unit 30 and the handle working state judgment unit 40, the electrodes 12 are configured as at least two, and are all arranged on the surface 11 of the freezer handle close to the area to be frozen; the excitation electric signal source 20 and at least one The pair of electrodes is connected to provide an excitation electric signal to the pair of electrodes, and the excitation electric signal includes at least one of a direct current signal, an alternating current signal or a pulse electric signal with an amplitude within a preset range, and the electric signal includes A voltage signal or a current signal; the output electrical signal acquisition unit 30 is connected to the pair of electrodes for acquiring the output electrical signal of the pair of electrodes, and the electrical signal includes a voltage signal or a current signal; the handle working state judgment unit 40 is connected to the excitation Both the electrical signal source 20 and the output electrical signal acquisition unit 30 are connected, and the handle working state judgment unit 40 is configured to calculate the impedance value corresponding to the electrode according to the amplitude of the excitation electrical signal and the amplitude of the output electrical signal, and according to The state of the handle is judged by the amount of change in the impedance value within the preset monitoring period, and the state of the handle includes being in a normal freezing state, falling off, not being frozen, shifting, and frozen. Ice working state; if the decrease of the impedance value within the preset monitoring period is greater than or equal to the first preset decrement threshold, the handle working state judging unit determines that the handle is in the freezing working state of the freezing area, and the The first preset decrement threshold is greater than zero.

Specifically, please continue to refer to FIG. 12 , by arranging a plurality of electrodes on the surface 11 of the freezer handle 10 close to the area to be frozen, and then controlling the excitation electrical signal source 20 to provide an excitation electrical signal to at least one pair of electrodes, and obtain the electrical signal via the output electrical signal. The unit 30 acquires the output electrical signals of the pair of electrodes, so as to use the handle working state judgment unit 40 to calculate the impedance value corresponding to the electrodes according to the amplitude of the excitation electrical signal and the amplitude of the output electrical signal, so as to The change amount of the impedance value within the monitoring period is used to judge the state of the handle. That is, the present application detects the state of the handle of the freezer by using electrodes to detect changes in the conductivity of the area to be frozen, so as to take corresponding countermeasures in a timely manner, avoid frostbite events, and improve the safety and reliability of the freezer. In addition, since a plurality of evenly distributed electrodes can be arranged on the surface of the handle of the freezer close to the area to be frozen, it can comprehensively detect the change in the conductivity of the area to be frozen, and avoid problems caused by the large area of the area to be frozen and uneven temperature distribution. As a result, detection blind spots are generated, resulting in the inability to completely detect all events accurately and in a timely manner. Compared with the traditional method of using the temperature sensor to detect the temperature value of the area to be frozen to indirectly detect the handle status of the freezer, due to the sensitivity of the temperature sensor, a large temperature change is required to identify an effective signal. The impedance value corresponding to the electrode in contact with the freezing area can be used to judge the handle status of the freezer, which can more timely and accurately identify slight changes in the freezing area, so that the handle status of the freezer can be detected more timely, accurately and comprehensively. In one embodiment of the present application, the cryo-apparatus includes at least one of a cryo-fat dissolving instrument, a cryo-pigmentation freckle-removing instrument, and a cryo-acne treatment instrument.

In an embodiment of the present application, the state detection device further includes a cooling surface for contacting the area to be frozen, and the cooling surface includes a flat surface and/or an arc surface to meet different requirements of different application scenarios of the freezer handle.

As an example, please refer to FIG. 13. In one embodiment of the present application, the state detection device further includes a cooling surface 11 for contacting the skin of the area to be frozen. The cooling surface 11 is set in an arc shape and forms a storage Cavities for containing the skin to be reduced. A plurality of electrodes 12 are arranged on the cooling surface 11 .

As an example, please continue to refer to FIG. 13. In one embodiment of the present application, the electrode 12 is columnar, and the surface of the electrode 12 close to the area to be frozen is higher than the surface 11 of the handle close to the area to be frozen, so as to be in contact with the area to be frozen, such as the skin. Directly touch and measure the impedance value of the skin. In other embodiments of the present application, the electrode 12 can be set to be planar, and the surface of the electrode 12 close to the area to be frozen is set to be flush with the surface 11 of the handle 10 close to the area to be frozen.

In one embodiment of the present application, a plurality of electrodes are arranged on the surface of the freezer handle close to the area to be frozen, and each of the electrodes is distributed in a uniform array, wherein two adjacent electrodes form an electrode pair, and/or select one The electrodes are used as common electrodes, and form electrode pairs with different electrodes, so as to provide excitation electric signals to each of the electrode pairs.

As an example, please refer to Fig. 14a. In one embodiment of the present application, a plurality of electrodes 12 are arranged on the surface 11 of the freezer handle close to the area to be frozen, and each electrode 12 is arranged to be distributed in a uniform array, and two adjacent electrodes form a Electrode pair, that is, electrode 1 and electrode 2 form an electrode pair, electrode 2 and electrode 3 form an electrode pair, electrode 4 and electrode 5 form an electrode pair, and electrode 5 and electrode 6 form an electrode pair. Each electrode pair provides an excitation electrical signal to measure the impedance value corresponding to the electrode contacting the area to be frozen.

As an example, please refer to FIG. 14b. In one embodiment of the present application, a plurality of electrodes 12 are arranged on the surface 11 of the freezer handle close to the area to be frozen, and each electrode 12 is arranged to be distributed in a uniform array, and the electrode 5 is selected as a common electrode. And form electrode pairs with different electrodes respectively, that is, electrode 5 and electrode 1 form an electrode pair, electrode 5 and electrode 2 form an electrode pair, electrode 5 and electrode 3 form an electrode pair, and electrode 5 and electrode 4 form an electrode pair 1 electrode pair, electrode 5 and electrode 6 form an electrode pair, electrode 5 and electrode 7 form an electrode pair, electrode 5 and electrode 8 form an electrode pair, and electrodes 5 and 9 form an electrode pair. The electrodes 5 are set as a common anode or cathode, and by providing excitation electric signals to each pair of electrodes, the impedance value corresponding to the electrodes in contact with the area to be frozen can be measured and the number of electrodes used can be reduced.

Further, please refer to FIG. 15 , in one embodiment of the present application, the freezer handle 10 also includes an antifreeze film 50, the antifreeze film 50 is arranged between the cooling surface 11 and the skin, and the antifreeze film 50 is used to prevent the cooling surface from 11. Direct contact with the skin will affect the sanitation of the handle. A plurality of electrode through holes 51 can be set on the antifreeze film 50, and the electrodes 12 are exposed to the electrode through holes 51, so that the electrodes 12 can pass through the electrode through holes 51 and directly contact the skin to improve the accuracy of the electrode 12 to measure the skin impedance value.

It should be understood that although the various steps in the flow charts of FIGS. 1-11 are shown sequentially as indicated by the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least some of the steps in Figures 1-11 may include a plurality of sub-steps or stages, these sub-steps or stages are not necessarily performed at the same time, but may be performed at different times, these sub-steps or stages The order of execution is not necessarily performed sequentially, but may be performed alternately or alternately with at least a part of other steps or sub-steps or stages of other steps.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is relatively specific and detailed, but should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims (29)

1. A state detection device is used to detect the state of the handle of the freezer to improve the intelligence, convenience and safety of the freezer. The handle of the freezer is provided with at least two electrodes near the surface of the area to be frozen. The device includes a controller electrically connected to each of said electrodes, said controller being configured to:

   controlling the excitation source to provide an excitation electrical signal to at least one pair of electrodes;

   obtaining output electrical signals of the pair of electrodes;

   calculating an impedance value corresponding to the electrode according to the amplitude of the excitation electrical signal and the amplitude of the output electrical signal;

   Judging the state of the handle according to the variation of the impedance value within the preset monitoring period, the state of the handle includes being in a normal freezing state, falling off event, non-frozen processing state, displacement event and being in a freezing area Freezing working state;

   If the decrease of the impedance value within the preset monitoring period is greater than or equal to the first preset decrement threshold, it is determined that the handle is in the icing working state in the freezing area, wherein the first preset decrement threshold is greater than zero .
2. The device according to claim 1, wherein the judging the state of the handle according to the variation of the impedance value within a preset monitoring period comprises:

   Obtain a curve of the impedance value changing with time;

   The state of the handle is judged according to the curve.
3. The device according to claim 2, wherein said judging the state of the handle according to the curve comprises:

   If the variation of the impedance value within the preset monitoring period is within the range of the preset stable threshold, it is determined that the handle is in a normal freezing state.
4. The device according to claim 2, wherein said judging the state of the handle according to the curve comprises:

   If the increase of the impedance value in two adjacent preset monitoring periods is greater than or equal to the first preset increment threshold, it is determined that the handle has fallen off and/or the handle is in an unfrozen state, wherein , the first preset increment threshold is greater than zero.
5. The device according to claim 2, wherein said judging the state of the handle according to the curve comprises:

   If within two adjacent preset monitoring periods, the increase of the impedance value in the previous preset monitoring period is greater than or equal to the first preset increment threshold, and the impedance value in the latter preset monitoring period If the reduction of the impedance value is greater than or equal to the second preset reduction threshold, it is determined that the handle has been displaced and/or the handle is in a non-refrigerated state, wherein the first preset reduction threshold, the The second preset decrement thresholds are all greater than zero.
6. The device according to any one of claims 1-5, wherein the excitation electric signal comprises at least one of a direct current signal, an alternating current signal or a pulse electric signal with an amplitude within a preset range.
7. The device according to any one of claims 1-5, wherein said providing an excitation electrical signal to at least one pair of electrodes comprises:

   providing an excitation electrical signal to a pair of adjacent electrodes; and/or selecting one electrode as a common electrode, and forming electrode pairs with different electrodes, so as to provide an excitation electrical signal to each of the electrode pairs.
8. The device according to any one of claims 1-5, wherein the cryo-apparatus includes at least one of a cryo-fat dissolving instrument, a cryo-pigmentation freckle-removing instrument, and a cryo-acne treatment instrument.
9. A state monitoring device, used to detect and control the working state of the handle of the freezer to improve the intelligence, convenience and safety of the freezer, the handle of the freezer is provided with at least two electrodes on the surface close to the area to be frozen , the device includes a controller electrically connected to each of the electrodes, the controller is configured to:

   controlling the excitation source to provide an excitation electrical signal to at least one pair of electrodes;

   obtaining output electrical signals of the pair of electrodes;

   Calculate the impedance value corresponding to the electrode according to the amplitude of the excitation electrical signal and the amplitude of the output electrical signal, and control the working state of the handle according to the variation of the impedance value within the preset monitoring period, and the control unit The working state of the handle includes controlling the cooling temperature of the handle to remain unchanged and controlling the handle to perform preset actions, and the preset actions include at least one of stopping cooling, lifting, raising the temperature, turning off the power supply, and recording movement information kind;

   If the decrease in the impedance value within the preset monitoring period is greater than or equal to the first preset reduction threshold, control the handle to lift up and/or control the handle to increase the temperature, wherein the first preset reduction Volume threshold is greater than zero.
10. The device according to claim 9, wherein the controlling the working state of the handle according to the variation of the impedance value within a preset monitoring period comprises:

    Obtain a curve of the impedance value changing with time;

    The working state of the handle is controlled according to the curve.
11. The device according to claim 10, wherein said controlling the working state of said handle according to said curve comprises:

    If the variation of the impedance value within the preset monitoring period is within the range of the preset stable threshold, the cooling temperature of the handle is controlled to remain unchanged.
12. The device according to claim 10, wherein said controlling the working state of said handle according to said curve comprises:

    If the increase of the impedance value in two adjacent preset monitoring periods is greater than or equal to the first preset increment threshold, the handle is controlled to perform the first preset action, wherein the first preset increment Volume threshold is greater than zero.
13. The device according to claim 10, wherein said controlling the working state of said handle according to said curve comprises:

    If within two adjacent preset monitoring periods, the increase of the impedance value in the previous preset monitoring period is greater than or equal to the first preset increment threshold, and the impedance value in the latter preset monitoring period If the reduction of the impedance value is greater than or equal to the second preset decrement threshold, the handle is controlled to perform a third preset action, and the first preset decrement threshold and the second preset decrement threshold are both greater than zero .
14. The device according to claim 12, wherein controlling the handle to perform a first preset action comprises:

    Control the handle to stop refrigeration and/or alarm.
15. The device according to claim 13, wherein controlling the handle to perform a third preset action comprises:

    Control the handle to turn off the power supply and/or record movement information.
16. The device according to any one of claims 9-15, wherein the freezing instrument comprises at least one of a freezing fat dissolving instrument, a freezing pigment freckle removing instrument and a freezing acne treatment instrument.
17. A state detection device is used to detect the state of the handle of the freezer to improve the intelligence, convenience and safety of the freezer. The device includes:

    There are at least two electrodes, and they are all arranged on the surface of the freezer handle close to the area to be frozen, for contacting the area to be frozen;

    An excitation electrical signal source, connected to at least one pair of electrodes, for providing an excitation electrical signal to the pair of electrodes;

    an output electrical signal acquisition unit, connected to the pair of electrodes, for acquiring output electrical signals of the pair of electrodes;

    The handle working state judging unit is connected to both the excitation electrical signal source and the output electrical signal acquisition unit, and is configured to calculate the impedance corresponding to the electrode according to the amplitude of the excitation electrical signal and the amplitude of the output electrical signal value, and

    Judging the state of the handle according to the variation of the impedance value within the preset monitoring period, the state of the handle includes being in a normal freezing state, falling off event, non-frozen processing state, displacement event and being in a freezing area Freezing working state;

    If the decrease of the impedance value within the preset monitoring period is greater than or equal to the first preset decrement threshold, the handle working state judging unit determines that the handle is in the freezing working state of the freezing area, and the first preset The decrement threshold is greater than zero.
18. The device according to claim 17, wherein the handle working state judging unit is further configured to:

    Obtain a curve of the impedance value changing with time;

    The state of the handle is judged according to the curve.
19. The device according to claim 18, wherein the judging the state of the handle according to the curve comprises:

    If the variation of the impedance value within the preset monitoring period is within the range of the preset stable threshold, it is determined that the handle is in a normal freezing state.
20. The device according to claim 18, wherein the judging the state of the handle according to the curve comprises:

    If the increase of the impedance value in two adjacent preset monitoring periods is greater than or equal to the first preset increment threshold, it is determined that the handle has fallen off and/or the area to be frozen is not frozen, Wherein, the first preset increment threshold is greater than zero.
21. The device according to claim 18, wherein the judging the state of the handle according to the curve comprises:

    If within two adjacent preset monitoring periods, the increase of the impedance value in the previous preset monitoring period is greater than or equal to the first preset increment threshold, and the impedance value in the latter preset monitoring period If the reduction of the impedance value is greater than or equal to the second preset reduction threshold, it is determined that the handle has been displaced and/or the handle is in a non-refrigerated state, wherein the first preset reduction threshold, the The second preset decrement thresholds are all greater than zero.
22. The apparatus of claim 17, further comprising:

    Cooling surface for contacting the area to be frozen;

    Wherein, the cooling surface includes a plane and/or an arc surface.
23. The apparatus of claim 22, wherein the electrodes are disposed on the cooling surface, the electrodes being configured to:

    columnar, the surface of the electrode close to the area to be frozen is higher than the surface of the handle close to the area to be frozen; or

    Planar shape, the surface of the electrode close to the area to be frozen is flush with the surface of the handle close to the area to be frozen.
24. The device of claim 22, wherein the handle further comprises:

    The antifreeze film is arranged between the cooling surface and the area to be frozen.
25. The apparatus according to claim 24, wherein the antifreeze film includes a plurality of electrode through holes to which the electrodes are exposed.
26. The device according to any one of claims 17-25, wherein the excitation electric signal comprises at least one of a direct current signal, an alternating current signal or a pulse electric signal with an amplitude within a preset range.
27. The device according to any one of claims 17-25, wherein each of the electrodes is distributed in a uniform array, wherein two adjacent electrodes form an electrode pair, and/or

    One electrode is a common electrode, and forms electrode pairs with different electrodes, so as to provide excitation electrical signals to each of the electrode pairs.
28. The device according to any one of claims 17-25, wherein the cryo-apparatus includes at least one of a cryo-fat dissolving apparatus, a cryo-pigmentation speckle-removing apparatus, and a cryo-acne treatment apparatus.
29. A condition monitoring device, comprising:

    The state detection device according to any one of claims 17-28, which is used to detect and control the handle of the freezer to change the working state.

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