Body surface temperature adjusting film and temperature adjusting liquid box

Abstract

The invention provides a body surface temperature adjusting film and a temperature adjusting liquid box, the temperature adjusting film comprises a double-layer film, a liquid flowing channel is formed between the double-layer film through a bonding line, a temperature adjusting inlet and a temperature adjusting outlet are formed in the free end of the liquid flowing channel, the temperature adjusting inlet and outlet are communicated with the temperature adjusting liquid box, and liquid in the temperature adjusting liquid box circulates between the liquid flowing channel and the temperature adjusting liquid box. Heat transfer is formed with the body surface to regulate the body temperature of the patient; the temperature-regulating liquid box is provided with a body temperature probe for monitoring the body temperature of a patient and controlling the temperature of liquid in the temperature-regulating liquid box in a linkage manner so as to regulate the body temperature of the patient, and is simple in structure, low in cost and easy to popularize.

Description

Technical Field

[0001] The present invention relates to the field of medical equipment, and in particular to a body surface temperature regulating film and a temperature regulating liquid tank. Background Art

[0002] In medical scenarios, patients are prone to temperature imbalance, which manifests as hypothermia or fever; in emergency scenarios, it is even necessary to lower the patient's brain temperature to implement brain protection and gain time for rescue. The details are as follows:

[0003] During surgery, due to low room temperature, exposed surgical field, decreased temperature regulation ability of patients after anesthesia, and intraoperative flushing, hypothermia is very likely to occur, causing various adverse effects, increasing surgical risks, and postoperative complications. Anesthesia and nursing guidelines clearly require that patients be kept warm during surgery. The main measures include: heating blankets, hot air baths, and infusion heating.

[0004] Most heating blankets are electric blankets, which need to be placed under the patient before surgery. They pose a risk of electric leakage and are expensive, making them difficult to implement widely. There are also hydrothermal blankets, which are expensive, but are very likely to rupture and leak due to sharp injury when used during surgery, and therefore cannot be widely used.

[0005] Hot air baths are the most widely used heat preservation measure. However, during surgery, hot air baths are mostly applied to the limbs far from the surgical area, where the blood circulation is small and the heat preservation effect is extremely limited. Even during the hot air bath, the body temperature continues to drop. At the same time, although the operating room is a relatively clean environment, the air may still cause bacteria on non-sterile surfaces around the sterile incision (such as clothing, ground, body surface, walls) to enter the surgical incision due to gas flow, increasing the risk of postoperative incision infection.

[0006] Infusion heating heats the fluid injected into the patient's body. The patient's infusion speed and total amount are limited, the temperature of the injected fluid cannot be higher than 42 degrees, and the insulation effect is extremely useless.

[0007] In the ICU, fever is common among patients, which can lead to increased intracranial pressure and increased brain oxygen consumption, which can easily lead to brain damage. When patients have fever, the cooling measure is air bath cooling, which seriously increases the risk of cross-infection in the ICU and the effect is unsatisfactory.

[0008] Both the operating room and the ICU are high-risk places for patients. Severe hypotension or cardiac arrest may occur from time to time, and emergency treatment requires emergency brain protection. At present, the main means of brain protection is cooling with an ice cap. The ice cap is small in size and can only take away a limited amount of heat. It becomes a warm cap after more than ten minutes. Such patients are in urgent need of a continuous low-temperature protection method.

[0009] In short, there is an urgent need for a heat preservation or cooling measure that can be implemented directly, does not cause gas flow, is low-cost, and can be effectively and continuously implemented. Summary of the invention

[0010] In view of the above-mentioned defects of the prior art, the present invention provides a body surface temperature regulating film and a temperature regulating liquid box, wherein the body surface temperature regulating film comprises a soft inner thermal conductive film and an outer film, wherein the inner thermal conductive film and the outer film are bonded by a plurality of bonding lines to form a plurality of liquid flow passages;

[0011] Two free ends of the fluid flow passage are connected to set a temperature adjustment inlet and a temperature adjustment outlet respectively, and a plurality of fluid flow passages are adjacent to form a body surface temperature adjustment area;

[0012] The area of ​​the body surface temperature adjustment zone on the inner thermal film and the outer surface is 2-200dm 2 The bonding line and the temperature regulation area on the body surface account for less than 18%.

[0013] Furthermore, the inner thermally conductive film, or / and the outer film is located on the inner side wall of the liquid flow passage, and a plurality of protrusions with a height less than 2.8 mm are provided; the protrusions include dispersed point-shaped protrusions or linear protrusions parallel to the liquid flow passage.

[0014] Furthermore, the thickness of the inner thermally conductive film and the outer film is less than 1 mm, and the total volume of the liquid flow passage is less than 15L.

[0015] Furthermore, the inner heat conductive film and the outer film on both sides corresponding to the same liquid flow passage are of equal length in the same direction;

[0016] In the body surface temperature adjustment area, corresponding to the same cross section of the fluid flow passage, the cross-sectional curve length of the inner thermal conductive film is greater than the cross-sectional curve length of the outer film.

[0017] Furthermore, the body surface temperature control zone is embedded with an infusion temperature control pipeline between adjacent fluid flow passages (4), and both ends of the infusion temperature control pipeline are provided with a Luer male interface and a Luer female interface respectively at the exit of the body surface temperature control zone;

[0018] Alternatively, the body surface temperature regulating area is recessed between adjacent fluid flow passages to provide an infusion warming groove for clamping the infusion pipeline, and both ends of the infusion warming groove are respectively provided with fixers for temporarily fixing the infusion pipeline, and the fixers include a clamping strip, a clamping ring, or a buckle.

[0019] The temperature regulating liquid tank comprises a water tank, a liquid outlet and a liquid inlet connected to the water tank, a temperature regulating module, a water pump (8), a temperature regulating switch and a water tank adjustment switch (7). The temperature regulating switch is linked to the temperature regulating module, the liquid outlet and the liquid inlet are respectively connected to the temperature regulating inlet and the temperature regulating outlet of the body surface temperature regulating membrane, when the temperature regulating switch is turned on, the temperature regulating module regulates the temperature of the liquid in the water tank; the water pump (8) pumps the liquid in the water tank out through the liquid outlet, enters the liquid flow passage through the temperature regulating inlet, exits the liquid flow passage through the liquid outlet, and finally returns to the water tank through the liquid inlet.

[0020] Furthermore, the temperature control module adopts a refrigeration plate, and the water tank includes a cold water tank and a warm water tank, the cold water tank and the warm water tank are separated by the refrigeration plate, the cooling side of the refrigeration plate is attached to the cold water tank, and the heating side of the refrigeration plate is attached to the warm water tank; the water tank adjustment switch (7) selects one of the cold water tank or the warm water tank to be circulated and connected to the body surface temperature control membrane.

[0021] Furthermore, a heater and a cold water temperature sensor are also provided in the cold water tank. The cold water temperature sensor is connected to the central controller via electrical signals and transmits temperature data in real time. The central controller controls the opening and closing of the heater. A radiator and a warm water temperature sensor are also provided on the side wall of the warm water tank. The warm water temperature sensor is connected to the central controller via electrical signals and transmits temperature data in real time. The central controller controls the opening and closing of the radiator.

[0022] Furthermore, the temperature regulating liquid tank also includes a temperature probe for monitoring the patient's body temperature. The temperature probe is linked to the temperature regulating module to adjust and control the working state of the temperature regulating module in the water tank.

[0023] Furthermore, a cold light is provided corresponding to the cold water tank, and a warm light is provided corresponding to the warm water tank, and both the cold light and the warm light are linked to the water tank adjustment switch (7); when the water tank adjustment switch (7) selects the cold water tank to be connected to the surface temperature regulating membrane, the water pump (8) works, the cold light is on, and the warm light is off; when the water tank adjustment switch (7) selects the warm water tank to be connected to the surface temperature regulating membrane, the water pump (8) works, the warm light is on, and the cold light is off; when the water pump (8) stops working, both the cold light and the warm light are off.

[0024] Furthermore, the temperature regulating liquid tank working modes include a heat preservation mode, a cooling mode and a brain protection mode:

[0025] During the warm-keeping mode, the body surface temperature regulating film covers the patient's body surface and is connected to the warm water tank, and the water pump (8) continues to work. When the body temperature is greater than 37.0°C, the temperature regulating switch controls the temperature regulating module to stop working; when the body temperature is less than 36.5°C, the temperature regulating switch controls the temperature regulating module to restart working;

[0026] During the cooling mode, the body surface temperature regulating film covers the patient's body surface and is connected to the cold water tank, and the water pump (8) continues to work. When the body temperature is greater than 37.5°C, the central controller controls the temperature regulating module to start working. When the body temperature is less than 37.0°C, the central controller controls the temperature regulating module to stop working.

[0027] During the brain protection mode, the body surface temperature control membrane wraps around the patient's head and neck and is connected to the cold water tank. The water pump (8) continues to work. When the body temperature is lower than 15°C, the central controller controls the temperature control module to stop working; when the body temperature is higher than 25°C, the central controller controls the temperature control module to restart working.

[0028] Beneficial effects of the present invention:

[0029] 1. The body surface temperature regulating film is made of two films heat-sealed and bonded together, which is low-cost and can be used by one person to avoid cross infection caused by repeated use;

[0030] 2. The body surface temperature regulating film is attached to the patient's body surface, which directly transfers heat without increasing gas circulation, and does not increase the risk of cross infection of intraoperative incisions and ICU patients;

[0031] 3. The body surface temperature regulating film is attached to the patient's body surface and relies on heat transfer to regulate body temperature, with reliable effect;

[0032] 4. The refrigeration plate and the cold and hot water tanks are separated, realizing the integration of heat preservation and cooling, which is extremely convenient to use;

[0033] 5. Keep warm during surgery, and protect the brain immediately in case of emergency, thus reducing brain complications after successful rescue;

[0034] 6. The cold light and warm light settings make the temperature adjustment measures clear at a glance, simple and convenient;

[0035] 7. The liquid flow in the body surface thermoregulatory membrane is linked with body temperature to achieve automatic body temperature control. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Schematic diagram of the use of the body surface temperature regulating film and the temperature regulating liquid tank of the present invention

[0037] Figure 2 This is a schematic diagram of the body surface temperature regulating film of the present invention;

[0038] Figure 3 It is a schematic diagram of the body surface fluid flow path of the present invention;

[0039] Figure 4 It is a schematic diagram of another solution of the body surface fluid flow passage of the present invention;

[0040] Figure 5 For the present invention Figure 2 A local enlarged view of point A;

[0041] Figure 6 This is a schematic diagram of the interior of the body surface fluid flow passage of the present invention;

[0042] Figure 7 It is an internal schematic diagram of another solution of the body surface fluid flow passage of the present invention;

[0043] Figure 8 It is a schematic diagram of the temperature regulating liquid tank of the present invention;

[0044] Fig. 9 This is a schematic diagram of the interior of the temperature regulating liquid tank of the present invention;

[0045] Fig.10 This is a schematic diagram of a water tank adjustment switch (7) of the present invention;

[0046] Fig.11 This is a schematic diagram of the principle of the water tank adjustment switch (7) of the present invention;

[0047] Fig.12 This is a diagram showing the coordination of the switch and the cold and warm lamp circuits of the present invention;

[0048] In the figure,

[0049] 1. Inner thermal conductive film; 2. Outer film; 3. Bonding line; 4. Liquid flow path; 6. Contact; 7. Water tank adjustment switch; 8. Water pump; 9. Adjustment protrusion; 41. Warm liquid inlet; 42. Warm liquid outlet; 5. Protrusion block. DETAILED DESCRIPTION

[0050] In order to make the technical solution of the present invention better understood by the technical personnel in the field, and to make the above-mentioned features, purposes and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with the embodiments. The embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0051] Body surface temperature regulating film and temperature regulating liquid tank, wherein, reference Figure 1 , 2 and 3, the body surface temperature regulating film comprises a soft inner thermal conductive film (1) and an outer film (2), the inner thermal conductive film (1) and the outer film (2) are bonded by a plurality of bonding lines (3) to form a plurality of liquid flow passages (4); Figure 6 Or 7, during use, the liquid flow passage (4) will be in a convex state, and the bonding line (3) serves as bonding points on both sides of the liquid flow passage (4).

[0052] The two free ends of the liquid flow passage (4) are connected to set a temperature adjustment inlet (41) and a temperature adjustment outlet (42), respectively, and a plurality of liquid flow passages (4) are adjacent to form a body surface temperature adjustment zone. When in use, one side of the inner thermal conductive film (1) of the body surface temperature adjustment zone needs to be attached to the surface of the human body. There will be a temperature difference between the liquid and the human body, which is beneficial to control the body temperature. The inner thermal conductive film (1) is preferentially attached to the superficial area of ​​large blood vessels (such as the neck where the jugular artery and vein are distributed, the groin where the femoral artery and vein are distributed, etc.). After the temperature adjustment liquid circulates in the body surface temperature adjustment zone, heat transfer continues to occur between the liquid and the human body. Blood circulation is conducive to rapid heat transfer between the body surface temperature adjustment zone and the human body, thereby regulating the body temperature. The liquid flow rate is generally controlled at 0.5-3cm / s, which is adjusted according to actual usage.

[0053] refer to Figure 3 or Figure 4 The area of ​​the body surface temperature adjustment zone on the outer side of the inner thermal conductive film (1) is 2-200dm 2 The width of the liquid flow passage (4) on the outer side of the inner thermal conductive film (1) is 3-15 mm, and the bonding line (3) accounts for less than 18% of the surface temperature adjustment area. Figure 3In this embodiment, the distribution is carried out by bending and arranging, which has a low pressure requirement and facilitates the flow of liquid inside the liquid passage (4). Figure 4 In another implementation, the distribution is carried out in a circuitous manner, which requires a higher pressure, but the temperature distribution is more balanced.

[0054] As a product, the temperature regulation area of ​​the newborn's body surface is generally 20dm 2 About 200dm for adults 2 About. Under normal circumstances, the body surface temperature control area covers or wraps the local body surface to control the body temperature; when the body temperature is seriously abnormal, a large area of ​​the body surface temperature control area is selected to cover or include the patient's entire body to control the body temperature. In order to ensure the efficiency and ability of temperature transfer, in the body surface temperature control area, the bonding line (3) is an invalid temperature control area, and its proportion must be maintained at a low ratio. The coverage rate of the effective temperature control area of ​​the liquid flow passage (4) needs to be maintained at more than 80%. During the liquid circulation process, the liquid flow passage (4) expands and produces a 1%-5% gap that is not in contact with the body surface. Therefore, the bonding line (3) accounts for a maximum of 18%, and the lower this value, the better.

[0055] refer to Figure 1 and 2 The temperature adjustment inlet (41) and the temperature adjustment outlet (42) are arranged adjacently or integrally, which is convenient for connection with the temperature adjustment liquid tank during use. The liquid in the temperature adjustment liquid tank enters the liquid flow passage 4 from the temperature adjustment inlet (41), repeatedly turns back and forth to form a body surface temperature adjustment zone, and finally returns to the temperature adjustment liquid tank through the temperature adjustment outlet (42). The liquid circulates in the temperature adjustment liquid tank and the liquid flow passage (4), transfers heat between the body surface temperature adjustment zone and the human body, and heats or cools the liquid in the temperature adjustment liquid tank, thereby ensuring a temperature difference between the body surface temperature adjustment zone and the human body, so that the heat transfer between the body surface temperature adjustment zone and the human body is continuous and effective.

[0056] Alternatively, the temperature control inlet (41) and the temperature control outlet (42) are located at the two ends of the body surface temperature control area, and the fluid flow passage 4 enters the body surface temperature control area from the temperature control inlet (41) and covers it, and is connected to the outside at the temperature control outlet (42) at the other end.

[0057] The principles of the two are the same, and the design of the corresponding positions of the temperature control inlet (41) and the temperature control outlet (42) can be selected according to external requirements.

[0058] refer to Figure 7As one embodiment, the inner side wall of the inner thermal conductive film (1) corresponding to the outer film (2), or / and the inner side wall of the outer film (2) corresponding to the inner thermal conductive film (1), is provided with a plurality of protrusions (5) with a height less than 2.8 mm; the protrusions (5) include linear protrusions parallel to the liquid flow path (4) or dispersed dot protrusions. In conventional use, due to pressure from external objects (sheets, infusion lines, surgical instruments, etc.) and the patient's own pressure, the conventional liquid flow path (4) may be squeezed and the liquid cannot flow. In order to avoid such a situation, a protrusion (5) is provided on the inner side wall of the liquid flow path (4), that is, on the side of the inner thermal conductive film (1) corresponding to the outer film (2) used to form the liquid flow path (4), or / and on the side of the outer film (2) corresponding to the inner thermal conductive film (1) used to form the liquid flow path (4). When the liquid flow passage (4) is compressed, the protruding block (5) will still retain some circulation space inside the liquid flow passage (4), thereby ensuring that the liquid flow passage (4) is unobstructed and that the liquid circulates.

[0059] refer to Figure 6 As another embodiment, the thickness of the inner thermal conductive film (1) and the outer film (2) is less than 1 mm, and the total volume of the liquid flow passage (4) is less than 15 L. A smaller thickness is beneficial to the heat transfer between the temperature-controlled liquid and the human body, but it is easy to be damaged if it is too thin. The best thickness is between 20 filaments and 100 filaments.

[0060] In this embodiment, the cross section of the liquid flow passage (4) is elliptical, and the cross-sectional area formula is S = πab (a is the major semi-axis of the ellipse, b is the minor semi-axis of the ellipse), which is generally controlled to be 0.6πcm 2 (The major axis is 2 cm, the minor axis is 0.3 cm, and the area is 2*0.3*π=0.6πcm 2 ).

[0061] 200dm based on the temperature control area of ​​the body surface of an adult fully wrapped 2 Calculated, 200 dm*10 dm, i.e. 200 cm*100 cm, of which the area occupied by the liquid flow passage (4) is calculated as 80%, which is about 16000 cm 2 The total length of the liquid flow passage (4) is 8000 cm, and the volume limit of the liquid inside it is about 8000 cm*π cm 2 =8000πcm 3 , i.e. about 24L. During the use of the full package, some areas will be pressed under the body, and the overall utilization rate of the liquid flow passage (4) is generally controlled at 30-60%, i.e. about 7-14L.

[0062] The body surface temperature adjustment area is 50dm under the commonly used local heating conditions. 2Calculated, 10dm*5dm, i.e. 100cm*50cm, of which the area occupied by the liquid flow passage (4) is calculated as 80%, which is about 4000cm 2 The total length of the liquid flow passage (4) is 2000 cm, and the volume limit of the liquid inside it is about 2000 cm*π cm 2 =2000πcm 3 During use, the overall usage rate of the liquid flow passage (4) is generally controlled at 60-80%, that is, about 4-5L.

[0063] In infants and young children, especially when wrapping the neck partially, the temperature regulation area of ​​the body surface is further reduced to a minimum of 2dm 2 , its volume is about 0.2L.

[0064] In actual use, the total volume of the fluid passage (4) determines the weight covered on the patient's body surface. A smaller volume can reduce the weight, but is not conducive to temperature control; a larger volume is conducive to temperature control, but the patient's weight increases, and a balance must be made between the two. The unit body surface weight mainly depends on the cross-sectional area of ​​the fluid passage (4). The thickness of the fluid passage (4) is controlled to be less than 5 mm, and the width is controlled to be less than 20 mm.

[0065] Furthermore, the inner thermally conductive film (1) includes a graphene film, a thermoplastic polyurethane elastomer rubber (TPU) film, and other materials with good thermal conductivity, good flexibility, good biocompatibility, and low cost, which is conducive to production cost control. The outer film (2) is preferably a flexible water-blocking and breathable film, which can be a polyurethane (PU) film, a polytetrafluoroethylene (PTFE) film, a thermoplastic polyurethane elastomer rubber (TPU) film, etc., which is conducive to discharging the gas in the fluid passage (4). The two are fixed by heat sealing, bonding, or adhesion. In order to ensure the stability of the bonding point, the two are preferably made of the same material.

[0066] Furthermore, the inner thermal conductive film (1) and the outer film (2) on both sides of the same liquid flow passage (4) are of equal length in the same direction; the two constitute a liquid passage, which is conducive to the circulation of liquid, one end of which is connected to an external liquid source, and the other end is connected to the body surface temperature control area.

[0067] refer to Figure 7 In the body surface temperature adjustment area, corresponding to the same cross section of the liquid flow passage (4), the cross-sectional curve length of the inner thermal conductive film (1) is greater than the cross-sectional curve length of the outer film (2). After the liquid is perfused, the outer film (2) swells and the inner thermal conductive film (1) is close to a straight state. When in use, the inner thermal conductive film (1) close to the patient's body surface can contact the body surface to the maximum extent, thereby reducing the gap between the liquid flow passage (4), thereby reducing the pressure on the body surface, and improving the heat transfer efficiency between the body surface temperature adjustment area and the human body.

[0068] Furthermore, an infusion temperature control pipeline is embedded on the outer side surface of the outer layer membrane (2) between adjacent fluid flow passages (4), and a male Luer connector and a female Luer connector are respectively arranged at both ends of the infusion temperature control pipeline at the temperature adjustment zone on the surface of the body. The male Luer connector and the female Luer connector are respectively connected to the infusion pipeline outlet and the venous passage. The infusion temperature control pipeline becomes a part of the patient's infusion pipeline. The temperature of the infusion liquid is synchronously controlled by the temperature of the fluid flow passage (4), thereby increasing the efficiency of regulating the patient's temperature.

[0069] Or, refer to Figure 7 The outer side surface of the outer layer film (2) is provided with an infusion heating groove between adjacent fluid passages (4) for holding the infusion pipeline, and two ends of the infusion heating groove are provided with a fixer for fixing the two ends of the infusion pipeline, and the fixer includes a clamping strip, a clamping ring, or a buckle. The infusion pipeline is inserted into the infusion heating groove by embedding and fixed by the fixer. The fluid passage (4) heats the infusion pipeline simultaneously while heating the patient.

[0070] refer to Figure 8-11 The temperature regulating liquid tank comprises a water tank, a liquid outlet and a liquid inlet connected to the water tank, a temperature regulating module, a water pump (8), a temperature regulating switch and a water tank adjustment switch (7); the temperature regulating switch is linked to the temperature regulating module, the liquid outlet and the liquid inlet are respectively connected to the temperature regulating inlet (41) and the temperature regulating outlet (42) of the body surface temperature regulating membrane, when the temperature regulating switch is turned on, the temperature regulating module regulates the temperature of the liquid in the water tank; the water pump (8) pumps the liquid in the water tank out through the liquid outlet, enters the liquid flow passage (4) through the temperature regulating inlet (41), exits the liquid flow passage (4) through the temperature regulating outlet (42), and finally returns to the water tank through the temperature regulating inlet (41).

[0071] Under normal conditions, the water pump (8) and the thermostat are in the off state, and the water tank adjustment switch (7) is connected to the cold water tank. Before use, it is necessary to turn on the thermostat, start the thermostat module, and then connect the external body surface thermostat membrane through the thermostat inlet (41) and the thermostat outlet (42), and start the water pump (8). The water tank adjustment switch (7) can use an electronic three-way valve. Figure 8 , 9 10, the water tank adjustment switch (7) is divided into two parts, the upper and lower parts, which are connected to the cold water tank and the hot water tank respectively through two three-way structures, and are synchronously controlled by the same switch control rod. Specifically, in this embodiment, the two three-way structures are arranged vertically, and the upper three-way structure is controlled by the water tank adjustment switch (7), and the lower three-way structure is connected by an extension rod. When the switch is turned, the upper circuit changes, for example, entering Fig.11 The state in the middle. Synchronously, the three-way structure below will also enter this state due to the torque transmission of the extension rod. At this time, the liquid outlet and liquid inlet in the cold water tank are synchronously connected to the outer surface temperature regulating membrane, and the liquid circulation is completed through the pressure increase of the water pump. When it is necessary to adjust to the warm water tank, the principle is similar and no further elaboration is made.

[0072] refer to Fig.10 and 11 An "L"-shaped connecting pipe is arranged inside the three-way structure, and the body surface temperature regulating membrane is selectively connected to the inside of the cold water tank and the hot water tank by rotation. In this embodiment, the lower three-way structure is connected to the temperature regulating inlet (41) after being pressurized by a water pump (8), and the upper three-way structure is connected to the temperature regulating outlet (42).

[0073] The power of the water pump (8) determines the flow rate of the liquid in the liquid flow passage (4), and can be set to two states: normal power and high power. Normal power is generally selected. When the body temperature is difficult to reach the target temperature, the high power state is activated to accelerate the flow rate of the temperature control liquid and improve the heat exchange efficiency between the liquid in the liquid flow passage (4) and the human body, thereby achieving body temperature control.

[0074] The temperature control module adopts a cooling sheet, which is also called a thermoelectric semiconductor cooling component. After power is turned on, the heat on the cold side is moved to the hot side, resulting in a decrease in the temperature of the cold side and an increase in the temperature of the hot side. The water tank includes a cold water tank and a warm water tank. The adjacent sides of the cold water tank and the warm water tank are preferably made of materials with good thermal conductivity. The adjacent sides of the two are separated by a cooling sheet. The cooling side of the cooling sheet is attached to the cold water tank, and the heating side of the cooling sheet is attached to the warm water tank. When the cooling sheet is working, the temperature of the cold water tank decreases and the temperature of the warm water tank increases. The water tank adjustment switch (7) selects one of the cold water tank or the warm water tank to be connected to the body surface temperature control membrane in a loop, thereby regulating the body temperature.

[0075] Furthermore, a cold light is set corresponding to the cold water tank, and a warm light is set corresponding to the warm water tank, and both the cold light and the warm light are linked to the water tank adjustment switch (7); when the water tank adjustment switch (7) selects the cold water tank to be connected to the surface temperature adjustment membrane, and the water pump (8) is working, the cold light is on and the warm light is off; when the water tank adjustment switch (7) selects the warm water tank to be connected to the surface temperature adjustment membrane, and the water pump (8) is working, the warm light is on and the cold light is off; when the water pump (8) stops working, both the cold light and the warm light are off. For details, refer to Fig.10 and Fig.12 The water tank adjustment switch (7) is configured as a two-way switch, one way of which controls the start and stop of the water pump (8), and the other way of which connects the circuit through the contact (6). The outer wall of the water tank adjustment switch (7) is provided with an adjustment protrusion (9) for connecting with the contact (6). The adjustment protrusion (9) occupies one third of the side wall of the water tank adjustment switch (7), so as to ensure that it can touch the contact (6) after rotation. When the water tank adjustment switch (7) rotates to one position, the adjustment protrusion (9) contacts the contact (6), the circuit is connected, and the cold light or the warm light is lit.

[0076] refer to Fig.12In this embodiment, when the water tank adjustment switch (7) is connected to the cold water tank, the contact near the cold water tank is triggered, and the contact of the warm water tank on the other side is in an open state. When the contact at the cold water tank is triggered, the switch behind the contact is squeezed and closed, and the entire circuit where the cold lamp is connected is connected, and the cold lamp is lit. When the water tank adjustment switch (7) is connected to the warm water tank, the contact at the warm water tank is triggered, and the contact at the cold water tank on the other side is in an open state. When the contact at the warm water tank is triggered, the switch behind the contact is squeezed and closed, and the entire circuit where the warm lamp is connected is connected, and the warm lamp is lit.

[0077] By setting the cold light and warm light, medical staff can directly observe the temperature control status of the body surface temperature control film to avoid incorrect use. Cold light is preferably in a cold color scheme, and warm light is preferably in a warm color scheme.

[0078] The cold water tank is also provided with a heater and a cold water temperature sensor. The cold water temperature sensor is connected to the central controller through an electrical signal and transmits temperature data in real time. The central controller controls the opening and closing of the heater. The heater can be a heating rod. When the patient is continuously heated, the cold water tank is prevented from freezing due to the low temperature when the warm water tank is used for a long time. The cold water tank that is about to freeze is heated by the heating rod to ensure that the liquid in the cold water tank will not freeze. This setting is mainly suitable for operating room environments: there is a high probability that the patient will be kept warm during surgery, and severe hypotension or cardiac arrest may occasionally occur during surgery. During surgery, the heating side of the refrigeration plate is used to heat the warm water tank, and then keep the patient warm (the body surface temperature regulating membrane is generally in the patient's neck or groin); while keeping warm, the cooling side of the refrigeration plate cools the cold water tank.

[0079] Once the patient suffers from accidental severe hypotension or cardiac arrest, the water tank adjustment switch (7) immediately selects the cold water tank to connect to the body surface thermostatic film, and wraps the body surface thermostatic film around the patient's head and neck to immediately implement brain protection. After the patient is successfully rescued, the body surface thermostatic film can be moved to the patient's neck or groin again, and switched to the insulation mode to keep the patient warm.

[0080] The side wall of the warm water tank is also provided with a radiator and a warm water temperature sensor. The warm water temperature sensor is connected to the central controller through an electrical signal and transmits temperature data in real time. The central controller controls the opening and closing of the radiator. The radiator can use a cooling fan. When the patient is continuously cooled down, it is necessary to avoid burns caused by accidental contact with the hot water tank due to the high temperature of the hot water tank when the cold water tank is used for a long time. The hot water tank with a high temperature is cooled by a heating rod to ensure that the temperature of the liquid in the hot water tank is not too high. This setting is mainly suitable for ICU environments. ICU patients are likely to have a fever and need to be continuously cooled down. At the same time, it is necessary to avoid burns caused by accidental contact with the hot water tank due to the high temperature.

[0081] Furthermore, it also includes a temperature probe for monitoring the patient's body temperature. The temperature probe is linked with the temperature control module to adjust and control the working state of the temperature control module in the water tank.

[0082] The temperature regulating liquid tank includes a temperature keeping mode, a temperature lowering mode and a brain protection mode;

[0083] During the warm-keeping mode, the water pump (8) works continuously, the temperature regulating membrane on the body surface is connected to the warm water tank, and when the body temperature is greater than 37.8°C, the temperature regulating switch controls the temperature regulating module to stop working; when the body temperature is less than 36.5°C, the temperature regulating switch controls the temperature regulating module to restart working; the body temperature between 36.5°C and 37.8°C is the optimal temperature for surgery, the human body's various enzyme activities are high, the coagulation function remains in a normal and active state, and at the same time the metabolic rates of various organs are basically normal, the oxygen consumption is not high, which is conducive to reducing bleeding and various complications.

[0084] Similarly, during the cooling mode, the water pump (8) continues to work, the body surface temperature regulating membrane is connected to the cold water tank, and when the body temperature is greater than 37.0°C, the central controller controls the temperature regulating module to start working, and when the body temperature is less than 36.0°C, the central controller controls the temperature regulating module to stop working. When used in patients with fever, it can prevent the patient's body temperature from being too high, keep the patient's basal metabolism basically normal, avoid an increase in oxygen consumption, and thus reduce the resulting heart and brain complications.

[0085] During the brain protection mode, the water pump (8) continues to work, the body surface temperature control membrane is connected to the cold water tank, and when the body temperature is lower than 15°C, the central controller controls the temperature control module to stop working, and when the body temperature is higher than 20°C, the central controller controls the temperature control module to start working. 15°C-20°C is the optimal temperature range for deep hypothermia, which can not only avoid frostbite of brain cells, but also reduce brain oxygen consumption, thereby reducing complications caused by hypoxia and necrosis of brain cells during emergency resuscitation.

[0086] In the above, the body temperature is monitored by a temperature probe, and the temperature data is transmitted to the central controller, which controls the working state of the temperature control module and automatically controls the patient's body temperature.

[0087] The insulation mode is mainly used for wrapping or local heating of ordinary patients. The liquid temperature in the temperature-regulating liquid tank will be maintained at 42-45°C under normal circumstances, which will not cause local burns;

[0088] The cooling mode is mainly used for wrapping or local cooling of patients with fever symptoms. The liquid temperature in the cold water tank will be maintained at around 20-25℃ under normal circumstances, which will not cause local frostbite;

[0089] Brain protection mode is used to reduce the patient's brain oxygen consumption during surgery, avoid brain hypoxia damage, and promote brain function recovery. The liquid temperature in the cold water tank will be maintained at 5-15°C under normal circumstances. The 5-15°C liquid temperature counteracts the heat brought by the patient's own blood flow, thereby achieving the goal of adjusting the brain temperature to 15-20°C.

[0090] In short, the invention can be used to keep patients warm during surgery and to protect the brain when patients undergo accidental first aid. It can also be used to cool down patients with fever to avoid burns. The matching consumable surface temperature regulating membrane is low-cost and can be discarded after use to avoid cross infection. The temperature control is linked with the body temperature to keep the body temperature within the optimal range. It is more powerful than existing products, easy to use, and not technically difficult, and can be transformed into clinical practice.

[0091] The above embodiments are merely illustrative of the principles and effects of this patent application, and are not intended to limit this patent application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of this patent application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in this patent application should still be covered by the claims of this patent application.

Claims

1. Body surface temperature regulating film, characterized in that: It comprises a soft inner thermal conductive film (1) and an outer film (2), wherein the inner thermal conductive film (1) and the outer film (2) are bonded together by a plurality of bonding lines (3) to form a plurality of liquid flow passages (4); The two free ends of the fluid flow passage (4) are respectively connected to form a temperature adjustment inlet (41) and a temperature adjustment outlet (42), and a plurality of fluid flow passages (4) are adjacent to each other to form a body surface temperature adjustment zone; The area of ​​the body surface temperature adjustment zone on the outer side of the inner thermal conductive film (1) is 2-200dm 2 , the bonding line (3) accounts for less than 18% of the body surface temperature regulation area.

2. The body surface temperature regulating film according to claim 1, characterized in that: The inner thermal conductive film (1) and / or the outer film (2) are located on the inner side wall of the liquid flow passage (4), and a plurality of protrusions (5) with a height less than 2.8 mm are provided; the protrusions (5) include dispersed point protrusions or linear protrusions parallel to the liquid flow passage (4).

3. The body surface temperature regulating film according to claim 1, characterized in that: The thickness of the inner thermal conductive film (1) and the outer film (2) is less than 1 mm, and the total volume of the liquid flow passage (4) is less than 15 L.

4. The body surface temperature regulating film according to claim 1, characterized in that: The inner heat-conducting film (1) and the outer film (2) on both sides corresponding to the same liquid flow passage (4) are of equal length in the same direction; In the body surface temperature adjustment area, corresponding to the same cross section of the liquid flow passage (4), the cross-sectional curve length of the inner thermal conductive film (1) is greater than the cross-sectional curve length of the outer film (2).

5. The body surface temperature regulating film according to claim 4, characterized in that: The body surface temperature adjustment zone is provided with an infusion temperature control pipeline inlaid between adjacent fluid flow passages (4), and both ends of the infusion temperature control pipeline are provided with a Luer male interface and a Luer female interface respectively out of the body surface temperature adjustment zone; Alternatively, the body surface temperature adjustment area is recessed between adjacent fluid flow passages (4) to provide an infusion heating groove for clamping the infusion pipeline, and fasteners for temporarily fixing the infusion pipeline are respectively provided at both ends of the infusion heating groove, and the fasteners include a clamping strip, a clamping ring, or a buckle.

6. Temperature regulating liquid tank, characterized in that: The invention comprises a water tank, a liquid outlet and a liquid inlet connected to the water tank, a temperature control module, a water pump (8), a temperature control switch and a water tank adjustment switch (7); the temperature control switch is linked to the temperature control module, the liquid outlet and the liquid inlet are respectively connected to the temperature control inlet (41) and the temperature control outlet (42) of the body surface temperature control membrane, and when the temperature control switch is turned on, the temperature control module adjusts the temperature of the liquid in the water tank; the water pump (8) pumps the liquid in the water tank out through the liquid outlet, enters the liquid flow passage (4) through the temperature control inlet (41), exits the liquid flow passage (4) through the liquid outlet (42), and finally returns to the water tank through the liquid inlet.

7. The temperature regulating liquid tank according to claim 6, characterized in that: The temperature control module adopts a refrigeration sheet, and the water tank includes a cold water tank and a warm water tank, the cold water tank and the warm water tank are separated by the refrigeration sheet, the cooling side of the refrigeration sheet is attached to the cold water tank, and the heating side of the refrigeration sheet is attached to the warm water tank; The water tank adjustment switch (7) selects one of the cold water tank or the warm water tank to be circulated and connected to the body surface temperature regulating membrane.

8. The temperature regulating liquid tank according to claim 7, characterized in that: The cold water tank is also provided with a heater and a cold water temperature sensor. The cold water temperature sensor is connected to the central controller via electrical signals and transmits temperature data in real time. The central controller controls the opening and closing of the heater. The side wall of the warm water tank is also provided with a radiator and a warm water temperature sensor. The warm water temperature sensor is connected to the central controller via electrical signals and transmits temperature data in real time. The central controller controls the opening and closing of the radiator.

9. The temperature regulating liquid tank according to claim 6, characterized in that: It also includes a temperature probe for monitoring the patient's body temperature. The temperature probe is linked to the temperature control module to adjust and control the working status of the temperature control module in the water tank.

10. The temperature regulating liquid tank according to claim 7, characterized in that: A cold light is provided corresponding to the cold water tank, and a warm light is provided corresponding to the warm water tank, and both the cold light and the warm light are linked to the water tank adjustment switch (7); when the water tank adjustment switch (7) selects the cold water tank to be connected to the surface temperature regulating membrane, the water pump (8) works, the cold light is on, and the warm light is off; when the water tank adjustment switch (7) selects the warm water tank to be connected to the surface temperature regulating membrane, the water pump (8) works, the warm light is on, and the cold light is off; when the water pump (8) stops working, both the cold light and the warm light are off.

11. The temperature regulating liquid tank according to claim 9, characterized in that: The working modes of the temperature regulating liquid tank include a heat preservation mode, a cooling mode and a brain protection mode: During the warm-keeping mode, the body surface temperature regulating film covers the patient's body surface and is connected to the warm water tank, and the water pump (8) continues to work. When the body temperature is greater than 37.0°C, the temperature regulating switch controls the temperature regulating module to stop working; when the body temperature is less than 36.5°C, the temperature regulating switch controls the temperature regulating module to restart working; During the cooling mode, the body surface temperature regulating film covers the patient's body surface and is connected to the cold water tank, and the water pump (8) continues to work. When the body temperature is greater than 37.5°C, the central controller controls the temperature regulating module to start working. When the body temperature is less than 37.0°C, the central controller controls the temperature regulating module to stop working. During the brain protection mode, the body surface temperature control membrane wraps around the patient's head and neck and is connected to the cold water tank. The water pump (8) continues to work. When the body temperature is lower than 15°C, the central controller controls the temperature control module to stop working; when the body temperature is higher than 25°C, the central controller controls the temperature control module to restart working.

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