Body surface temperature adjusting film and temperature adjusting liquid box

Abstract

The utility model 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 application relates to the field of medical devices, in particular to a body surface temperature regulating film and a temperature regulating liquid tank. BACKGROUND

[0002] In a medical scenario, a patient is prone to temperature imbalance, which manifests as hypothermia or fever; in an emergency scenario, the patient's brain temperature needs to be lowered to implement brain protection and win time for rescue. Specifically as follows:

[0003] During surgery, due to the low room temperature, the surgical field is exposed, and the patient's body temperature regulation ability decreases after anesthesia, plus the flushing during surgery, which is prone to hypothermia, causing various adverse effects and increasing the risk of surgery and postoperative complications. The anesthesia and nursing guidelines clearly require that the patient be given intraoperative warming. The main measures are: heating blanket, hot air bath, and infusion warming.

[0004] The heating blanket is mostly an electric heating blanket that needs to be placed under the patient before surgery, which has the risk of electric shock and is expensive, making it difficult to implement widely; there are also water heating blankets, which are expensive, but during surgery, they are prone to rupture and water leakage due to sharp instrument damage, making them difficult to popularize.

[0005] Hot air bath is the most widely used warming measure, but during surgery, the hot air bath is usually applied to the limbs far from the surgical area, which has a small amount of circulating blood, and the warming effect is very limited, and even while the hot air bath is being applied, the body temperature continues to drop. At the same time, although the operating room is a relatively clean environment, blowing air can still cause bacteria on the non-sterile surfaces (such as clothing, floor, body surface, and wall) around the sterile incision to enter the surgical incision due to air flow, increasing the risk of postoperative incision infection.

[0006] Infusion warming involves heating the liquid input into the patient's body, and the patient's infusion speed and total amount are limited, and the temperature of the input liquid cannot exceed 42 degrees, making the warming effect very limited.

[0007] In the ICU, fever is common in patients, and fever can cause increased brain pressure and increased brain oxygen consumption, making it prone to brain injury. The cooling measure for patients with fever is air bath cooling, which increases the risk of cross-infection in the ICU and has a less-than-satisfactory effect.

[0008] Both the operating room and the ICU are high-risk places for patients, and patients are prone to severe hypotension or cardiac arrest, which requires emergency brain protection during first aid. The current main means of brain protection is ice cap cooling, which has a small volume and limited heat removal, and becomes a warm cap after ten minutes or so, and such patients urgently need a continuous low-temperature protection means.

[0009] In summary, there is an urgent need for a direct contact, low-cost, and effective continuous warming or cooling measure that does not cause air flow. SUMMARY

[0010] In view of the above defects of the prior art, the present application provides a body surface temperature regulating film and a temperature regulating liquid tank. The body surface temperature regulating film comprises a soft inner heat-conducting film and an outer film. The inner heat-conducting film and the outer film are bonded by a plurality of bonding lines to form a plurality of flow liquid passages.

[0011] The two free ends of the flow liquid passage are respectively connected to a temperature regulating inlet and a temperature regulating outlet. The adjacent flow liquid passages form a body surface temperature regulating area.

[0012] The area of the inner heat-conducting film and the outer film in the body surface temperature regulating area is 2-200 dm 2 The bonding lines account for less than 18% of the area of the body surface temperature regulating area.

[0013] Further, the inner heat-conducting film and / or the outer film is located on the inner side wall of the flow liquid passage and is provided with a plurality of convex blocks with a height of less than 2.8 mm. The convex blocks include point-shaped convex blocks or linear convex blocks parallel to the flow liquid passage.

[0014] Further, the thickness of the inner heat-conducting film and the outer film is less than 1 mm, and the total volume of the flow liquid passage is less than 15 L.

[0015] Further, the inner heat-conducting film and the outer film on the same flow liquid passage are of the same length and direction.

[0016] In the body surface temperature regulating area, the cross-sectional curve length of the inner heat-conducting film is greater than that of the outer film at the same cross section of the flow liquid passage.

[0017] Further, the body surface temperature regulating area is inlaid with an infusion temperature control pipeline between adjacent flow liquid passages (4). The two ends of the infusion temperature control pipeline are respectively provided with a luer male connector and a luer female connector out of the body surface temperature regulating area.

[0018] Alternatively, the body surface temperature regulating area is recessed between adjacent flow liquid passages to form an infusion warming groove for clamping the infusion pipeline. The two ends of the infusion warming groove are respectively provided with a fixer for temporarily fixing the infusion pipeline. The fixer includes a clamping strip, a clamping ring, or a clasp.

[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 distribution 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 film. When the temperature regulating switch is turned on, the temperature regulating 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, into the flow liquid passage through the temperature regulating inlet, out of the flow liquid passage through the liquid outlet, and finally back into the water tank through the liquid inlet.

[0020] Further, the temperature adjusting module adopts a refrigerating sheet, the water tank comprises a cold water tank and a warm water tank, the cold water tank and the warm water tank are separated by the refrigerating sheet, the refrigerating sheet is attached to the cold water tank on the refrigerating side, and the refrigerating sheet is attached to the warm water tank on the heating side; the water tank adjustment switch (7) selects one of the cold water tank and the warm water tank to be in circulation communication with the body surface temperature adjusting film.

[0021] Further, the cold water tank is further provided with a heater and a cold water temperature sensor, the cold water temperature sensor is in electrical signal communication with the central controller and transmits temperature data in real time, and the central controller controls the opening and closing of the heater; the sidewall of the warm water tank is further provided with a radiator and a warm water temperature sensor, the warm water temperature sensor is in electrical signal communication with the central controller and transmits temperature data in real time, and the central controller controls the opening and closing of the radiator.

[0022] Further, the temperature adjusting liquid tank further comprises a body temperature probe for monitoring the body temperature of the patient, the body temperature probe is linked with the temperature adjusting module, and the working state of the temperature adjusting module in the water tank is adjusted and controlled.

[0023] Further, a cold lamp is arranged corresponding to the cold water tank, and a warm lamp is arranged corresponding to the warm water tank, the cold lamp and the warm lamp are linked with the water tank adjustment switch (7); when the water tank adjustment switch (7) selects the cold water tank to be in communication with the body surface temperature adjusting film, the water pump (8) works, the cold lamp is on, and the warm lamp is off; when the water tank adjustment switch (7) selects the warm water tank to be in communication with the body surface temperature adjusting film, the water pump (8) works, the warm lamp is on, and the cold lamp is off; when the water pump (8) stops working, the cold lamp and the warm lamp are both off.

[0024] Further, the working mode of the temperature adjusting liquid tank comprises a heat preservation mode, a cooling mode and a brain protection mode.

[0025] During the heat preservation mode, the body surface temperature adjusting film covers the body surface of the patient and is in communication with the warm water tank, the water pump (8) continuously works, the body temperature is greater than 37.0 DEG C, the temperature adjusting switch controls the temperature adjusting module to stop working, and the body temperature is less than 36.5 DEG C, the temperature adjusting switch controls the temperature adjusting module to restart working.

[0026] During the cooling mode, the body surface temperature adjusting film covers the body surface of the patient and is in communication with the cold water tank, the water pump (8) continuously works, the body temperature is greater than 37.5 DEG C, the central controller controls the temperature adjusting module to start working, and the body temperature is less than 37.0 DEG C, the central controller controls the temperature adjusting module to stop working.

[0027] During the brain protection mode, the body surface temperature adjusting film wraps the head and neck of the patient and is in communication with the cold water tank, the water pump (8) continuously works, the body temperature is lower than 15 DEG C, the central controller controls the temperature adjusting module to stop working, and the body temperature is greater than 25 DEG C, the central controller controls the temperature adjusting module to restart working.

[0028] The beneficial effects of the present application are as follows:

[0029] 1. The body surface temperature adjusting film is formed by heat sealing and bonding of two films, which is low in cost and can be used by one person at a time, thereby avoiding cross infection caused by repeated use.

[0030] 2. The body surface temperature regulating film is attached to the body surface of a patient, and heat transfer occurs directly, without increasing gas circulation, and without increasing the risk of cross infection for patients in the operating room and ICU;

[0031] 3. The body surface temperature regulating film is attached to the body surface of a patient, and heat transfer is relied on to regulate body temperature, and the effect is reliable;

[0032] 4. The refrigeration sheet and the cold water tank are separately arranged, and the heat preservation and cooling integration is realized, and the use is extremely convenient;

[0033] 5. The heat preservation is implemented in the operation, and brain protection can be implemented in the first time in case of emergency, and brain complications after successful rescue are reduced;

[0034] 6. The cold lamp and the warm lamp are arranged, and the temperature regulating measures are clear at a glance, and the operation is simple and convenient;

[0035] 7. The liquid flow in the body surface temperature regulating film is linked with the body temperature, and automatic temperature control is realized. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a schematic view of the body surface temperature regulating film and the temperature regulating liquid tank of the application.

[0037] Figure 2 It is a schematic view of the body surface temperature regulating film of the application.

[0038] Figure 3 It is a schematic view of the body surface liquid flow path of the application.

[0039] Figure 4 It is a schematic view of another scheme of the body surface liquid flow path of the application.

[0040] Figure 5 It is a local enlarged view of A of the application. Figure 2

[0041] Figure 6 It is a schematic view of the internal part of the body surface liquid flow path of the application.

[0042] Figure 7 It is a schematic view of the internal part of another scheme of the body surface liquid flow path of the application.

[0043] Figure 8 It is a schematic view of the temperature regulating liquid tank of the application.

[0044] Figure 9 It is a schematic view of the internal part of the temperature regulating liquid tank of the application.

[0045] Figure 10 It is a schematic view of the water tank regulating switch (7) of the application.

[0046] Figure 11 It is a schematic view of the principle of the water tank regulating switch (7) of the application.​

[0047] Figure 12 The matching diagram of the regulating switch and the cold light and warm light circuit of the present application;

[0048] In the figure,

[0049] 1, inner heat-conducting film; 2, outer film; 3, adhesive line; 4, liquid flow path; 6, contact; 7, water tank regulating switch; 8, water pump; 9, regulating protrusion; 41, warm liquid inlet; 42, warm liquid outlet; 5, protrusion block. DETAILED DESCRIPTION

[0050] In order to make the person skilled in the art better understand the technical solutions of the present application, and make the above-mentioned features, objects and advantages of the present application more clear and easy to understand, the present application will be further described below in combination with examples. The examples are only used to illustrate the present application and not to limit the scope of the present application.

[0051] Body surface temperature regulating film and temperature regulating liquid tank, wherein, referring to Figure 1 , 2 and 3, the body surface temperature regulating film comprises a soft inner heat-conducting film (1) and an outer film (2), the inner heat-conducting film (1) and the outer film (2) are bonded by a plurality of adhesive lines (3) to form a plurality of liquid flow paths (4); referring to Figure 6 or 7, the liquid flow path (4) will present a protruding state during use, and the adhesive line (3) serves as a bonding point on both sides of the liquid flow path (4).

[0052] The two free ends of the liquid flow path (4) are respectively connected to the temperature regulating inlet (41) and the temperature regulating outlet (42), and a plurality of adjacent liquid flow paths (4) form a body surface temperature regulating area. When in use, one side of the inner heat-conducting film (1) of the body surface temperature regulating area is attached to the surface of the human body, and there is a temperature difference between the liquid and the human body, which is conducive to controlling the temperature of the human body. The inner heat-conducting film (1) is preferentially attached to the area where the superficial large blood vessels are distributed (for example, the neck where the carotid artery and vein are distributed, the groin where the femoral artery and vein are distributed, etc.), and after the temperature regulating liquid flows through the body surface temperature regulating area, the liquid and the human body continuously undergo heat transfer, and the blood circulation is conducive to rapid heat transfer between the body surface temperature regulating area and the human body, thereby regulating the temperature of the human body. The liquid flow rate is generally controlled at 0.5-3 cm / s, which can be adjusted according to actual use.

[0053] Referring to Figure 3 or Figure 4 , the area of the body surface temperature regulating area on the outer side of the inner heat-conducting film (1) is 2-200 dm 2 , the width of the liquid flow path (4) on the outer side of the inner heat-conducting film (1) is 3-15 mm, and the area ratio of the adhesive line (3) in the body surface temperature regulating area is less than 18%. Referring to Figure 3In this embodiment, the distribution is achieved by folding arrangement, which requires less pressure and facilitates the flow of liquid in the flow path (4). Referring to Figure 4 In another embodiment, the distribution is achieved by winding arrangement, which requires more pressure but balances the temperature distribution.

[0054] As a product, the body surface temperature control area of a newborn is generally 20dm 2 around, and that of an adult is generally 200dm 2 around. In general, the body surface temperature control area covers or wraps the local body surface to control the body temperature; when the body temperature is severely abnormal, a large-area body surface temperature control area is selected to cover or include the whole body to control the body temperature. In order to ensure the efficiency and capacity of temperature transfer, the bonding line (3) in the body surface temperature control area is an ineffective temperature control area, and the proportion thereof must be maintained at a relatively low proportion. The coverage rate of the effective temperature control area of the flow path (4) needs to be maintained at more than 80%. During the liquid flow process, the expansion of the flow path (4) will generate 1%-5% of the gap that does not contact the body surface, so the proportion of the bonding line (3) is at most 18%, and the lower the value is, the better.

[0055] Referring to Figure 1 and 2 , the temperature control inlet (41) and the temperature control outlet (42) are adjacent or integrated, which is beneficial for connection with the temperature control liquid tank during use. The liquid in the temperature control liquid tank enters the flow path (4) from the temperature control inlet (41), repeatedly returns and winds to form the body surface temperature control area, and finally returns to the temperature control liquid tank through the temperature control outlet (42). The liquid circulates in the temperature control liquid tank and the flow path (4), transfers heat with the human body in the body surface temperature control area, and is heated or cooled in the temperature control liquid tank, so as to ensure the temperature difference between the body surface temperature control area and the human body and continuously and effectively transfer heat between the body surface temperature control area and the human body.

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

[0057] Both have the same principle, and the design of the corresponding positions of the temperature control inlet (41) and the temperature control outlet (42) can be selected according to the needs of the outside.

[0058] Referring to Figure 7, as one of the embodiments, the inner layer heat conducting film (1) corresponds to the inner side wall of the outer layer film (2), or / and the outer layer film (2) corresponds to the inner side wall of the inner layer heat conducting film (1), a plurality of convex blocks (5) with a height less than 2.8mm are arranged; the convex blocks (5) include linear convex blocks parallel to the flow liquid passage (4) or dispersedly distributed point-shaped convex blocks. In the conventional use, the conventional flow liquid passage (4) is squeezed due to the external pressure (bed sheet, infusion pipeline, surgical instruments, etc.) and the patient's own pressure, and the liquid cannot flow. In order to avoid such situation, the convex blocks (5) are arranged on the inner side wall of the flow liquid passage (4), that is, on the side of the inner layer heat conducting film (1) corresponding to the outer layer film (2) for constituting the flow liquid passage (4), or / and on the side of the outer layer film (2) corresponding to the inner layer heat conducting film (1) for constituting the flow liquid passage (4). When the flow liquid passage (4) is pressed, the convex blocks (5) still leave some flow space inside the flow liquid passage (4), so as to ensure the smoothness of the flow liquid passage (4) and ensure the circulation of the liquid.

[0059] Reference Figure 6 , as another embodiment, the thickness of the inner layer heat conducting film (1) and the outer layer film (2) is less than 1mm, and the total volume of the flow liquid passage (4) is less than 15L. Smaller thickness is beneficial to the heat transfer of the temperature control liquid and the human body, but too thin is easy to be damaged, and the thickness between 20 silk and 100 silk is optimal.

[0060] In the present embodiment, the cross section of the flow liquid passage (4) is oval, and the sectional area formula is S=πab (a is the long half axis of the ellipse, and b is the short half axis of the ellipse), which is generally controlled to be 0.6πcm 2 (long axis 2cm, short axis 0.3cm, area 2*0.3*π=0.6πcm 2 ).

[0061] The body surface temperature adjusting area under the premise of completely wrapping an adult is 200dm 2 , 200dm*10dm, that is, 200cm*100cm, wherein the area occupied by the flow liquid passage (4) is calculated as 80%, about 16000cm 2 , the overall length of the flow liquid passage (4) is 8000cm, and the volume limit of the liquid inside is about 8000cm*πcm 2 =8000πcm 3 , that is, about 24L. During the use of full wrapping, part of the area will be pressed into the body, and the overall use rate of the flow liquid passage (4) is generally controlled to be 30-60%, that is, about 7-14L.

[0062] The body surface temperature adjusting area under the premise of completely wrapping an adult is 200dm 2The calculation is 10 dm*5 dm, i.e. 100 cm*50 cm, wherein the area occupied by the flow liquid passage (4) is calculated at 80%, about 4000 cm 2 The overall length of the flow liquid passage (4) is 2000 cm, and the volume limit of the liquid inside is about 2000 cm*π cm 2 =2000π cm 3 i.e. about 6 L. During use, the overall flow liquid passage (4) is generally controlled at a usage rate of 60-80%, i.e. about 4-5 L.

[0063] In infants, especially when the neck is partially wrapped, the area of the body surface temperature regulating zone is further reduced, and the minimum can be 2 dm 2 , and the volume is about 0.2 L.

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

[0065] Further, the inner layer heat conducting film (1) includes graphene film, thermoplastic polyurethane elastomer rubber (TPU) film, and the like. Such materials have good heat conduction, good flexibility, good biocompatibility, and low cost, and are conducive to production control cost. The outer layer film (2) is preferably a water-resistant and breathable film with flexible texture, and can use polyurethane (PU) film, polytetrafluoroethylene (PTFE) film, thermoplastic polyurethane elastomer rubber (TPU) film, and the like, which is conducive to the discharge of gas in the flow liquid passage (4). The two are fixed by heat sealing or adhesion or bonding. In order to ensure the stability of the adhesion, the two preferentially use the same material.

[0066] Further, the inner layer heat conducting film (1) and the outer layer film (2) corresponding to the same flow liquid passage (4) are the same length and in the same direction; the two constitute a liquid passage, which is conducive to the flow of liquid, one end is connected to an external liquid source, and the other end is connected to the body surface temperature regulating zone.

[0067] Reference Figure 7 In the body surface temperature regulating zone, the cross-sectional curve length of the inner layer heat conducting film (1) corresponding to the same cross section of the flow liquid passage (4) is greater than that of the outer layer film (2). After the liquid is perfused, the outer layer film (2) is raised, and the inner layer heat conducting film (1) is in a nearly straight state. In use, the inner layer heat conducting film (1) close to the patient's body surface can maximize contact with the body surface, thereby reducing the gap between the flow liquid passages (4), reducing the pressure on the body surface, and improving the heat transfer efficiency of the body surface temperature regulating zone and the human body.

[0068] Further, the outer side surface of the outer film (2) is inlaid with infusion control temperature pipeline between adjacent flow liquid passages (4), the two ends of the infusion control temperature pipeline are provided with luer male connector and luer female connector respectively in the body surface temperature adjusting area, the luer male connector and the luer female connector are connected with the infusion pipeline outlet and the vein passage respectively, the infusion control temperature pipeline becomes part of the patient infusion pipeline, and the infusion liquid is controlled temperature synchronously by the temperature of the flow liquid passage (4), so that the efficiency of adjusting the temperature of the patient is increased.

[0069] Or, refer to Figure 7 , the outer side surface of the outer film (2) is recessed with infusion warming groove for clamping infusion pipeline between adjacent flow liquid passages (4), and the two ends of the infusion warming groove are provided with fixers for fixing the two ends of the infusion pipeline respectively, the fixers include clamping strip, clamping ring or clamping buckle. The infusion pipeline is placed in the infusion warming groove by inlaying and is fixed by the fixer. The flow liquid passage (4) synchronously heats the infusion pipeline while heating the patient.

[0070] Refer to Figure 8-11 , the temperature adjusting liquid tank comprises water tank, liquid outlet and liquid inlet communicated with the water tank, temperature adjusting module, water pump (8), temperature adjusting switch and water tank distribution switch (7); the temperature adjusting switch is linked with the temperature adjusting module, the liquid outlet and the liquid inlet are respectively communicated with the temperature adjusting inlet (41) and the temperature adjusting outlet (42) of the body surface temperature adjusting film, the temperature adjusting switch is opened, and the temperature adjusting module adjusts the temperature of the liquid in the water tank; the water pump (8) pumps out the liquid in the water tank through the liquid outlet, enters the flow liquid passage (4) through the temperature adjusting inlet (41), exits the flow liquid passage (4) through the temperature adjusting outlet (42), and finally returns to the water tank through the temperature adjusting inlet (41).

[0071] Under normal circumstances, the water pump (8) and the temperature adjusting switch are in the closed state, and the water tank distribution switch (7) is communicated with the cold water tank. Before use, the temperature adjusting switch needs to be opened, the temperature adjusting module needs to be started, the external body surface temperature adjusting film needs to be connected through the temperature adjusting inlet (41) and the temperature adjusting outlet (42), and the water pump (8) needs to be started. The water tank distribution switch (7) can adopt an electronic three-way valve. Refer to Figure 8 , 9 and 10, the water tank distribution switch (7) is divided into upper and lower two parts, and the two three-way structures are respectively communicated with the cold water tank and the hot water tank, and are synchronously controlled to be opened and closed by the same switch control rod. Specifically, in the embodiment, the two three-way structures are vertically arranged, the upper three-way structure is controlled by the water tank distribution switch (7), and the lower three-way structure is connected by an extension rod. When the switch is twisted, the upper loop changes, for example, enters the state in Figure 11 . Synchronously, the lower three-way structure also enters this state synchronously due to the torsion transmission of the extension rod. At this time, the liquid outlet and the liquid inlet in the cold water tank are synchronously connected with the external body surface temperature adjusting film, and the circulation of the liquid is completed through the pressure boosting of the water pump. When it is needed to adjust to the warm water tank, the principle is similar and will not be described in detail.

[0072] Reference Figure 10 and 11 The three-way structure is internally provided with a "L"-like connecting pipeline, which is connected to the inside of the cold water tank and the hot water tank by rotation, and in the embodiment, the lower three-way structure is connected to the temperature regulating inlet (41) after being pressurized by the 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 passage (4), and two states of normal power and high power can be set, and the normal power is generally selected; when the body temperature is difficult to reach the target temperature, the high power state is started to accelerate the flow speed of the temperature control liquid, improve the heat exchange efficiency of the liquid in the liquid passage (4) and the human body, so as to realize the body temperature control.

[0074] The temperature regulating module adopts a refrigeration sheet, which is also called a thermoelectric semiconductor refrigeration assembly. After being powered on, the heat on the cold side is moved to the hot side, resulting in a decrease in the temperature on the cold side and an increase in the temperature on the hot side. The water tank includes a cold water tank and a warm water tank, and the adjacent sides of the cold water tank and the warm water tank are preferably made of a material with good heat conduction effect. The adjacent sides of the two are separated by a refrigeration sheet, and the refrigeration 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. When the refrigeration sheet is working, the temperature of the cold water tank decreases, and the temperature of the warm water tank increases. The water tank distribution switch (7) selectively connects the cold water tank or the warm water tank to the body surface temperature regulating film in circulation, thereby regulating the temperature of the human body.

[0075] Further, a cold light is arranged corresponding to the cold water tank, and a warm light is arranged corresponding to the warm water tank, and the cold light and the warm light are linked with the water tank distribution switch (7); when the water tank distribution switch (7) selects the cold water tank to connect the body surface temperature regulating film, and the water pump (8) works, the cold light is on, and the warm light is off; when the water tank distribution switch (7) selects the warm water tank to connect the body surface temperature regulating film, and the water pump (8) works, the warm light is on, and the cold light is off; when the water pump (8) stops working, the cold light and the warm light are both off. Specifically, referring to Figure 10 and Figure 12 The water tank distribution switch (7) is provided as a double switch, one of which controls the opening and closing of the water pump (8), and the other of which connects the circuit through the contact (6). The outer wall of the water tank distribution switch (7) is provided with a distribution protrusion (9) for connecting with the contact (6), and the distribution protrusion (9) occupies one third of the position of the side wall of the water tank distribution switch (7), so as to ensure that it can touch the contact (6) after rotation. When the water tank distribution switch (7) is rotated to a certain position, the distribution protrusion (9) contacts the contact (6), and the circuit is connected, and the cold light or the warm light is turned on.

[0076] Reference Figure 12In the present embodiment, when the water tank switch (7) is connected to the cold water tank, the contact near the cold water tank is triggered, and the contact on the other side of the warm water tank is in the off state. When the contact near the cold water tank is triggered, the switch behind the contact is pressed to close, and the entire circuit where the cold lamp is located is connected, so that the cold lamp is lit. When the water tank switch (7) is connected to the warm water tank, the contact near the warm water tank is triggered, and the contact near the cold water tank on the other side is in the off state. When the contact near the warm water tank is triggered, the switch behind the contact is pressed to close, and the entire circuit where the warm lamp is located is connected, so that the warm lamp is lit.

[0077] By setting the cold lamp and the warm lamp, medical personnel can directly observe the temperature adjustment state of the body surface temperature adjustment film, and avoid incorrect use. The cold lamp preferably uses a cold color tone system, and the warm lamp preferably uses a warm color tone system.

[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 continuously warming the patient, the cold water tank temperature is too low to freeze when the warm water tank is used for a long time. The heating rod can raise the temperature of the cold water tank that is about to freeze, ensuring that the liquid in the cold water tank does not freeze. This setting is mainly suitable for operating room environment: there is a high probability of implementing patient warming during surgery, and there may be severe hypotension or cardiac arrest during surgery. During the operation, the warm water tank is heated by the heating side of the refrigeration sheet, and then the patient is warmed (the body surface temperature adjustment film is generally on the patient's neck or groin); while warming, the cold water tank is cooled by the refrigeration side of the refrigeration sheet.

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

[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 be a cooling fan. When continuously cooling the patient, the warm water tank temperature is too high to cause burns when accidentally touched when the cold water tank is used for a long time. The heating rod can cool the warm water tank with too high temperature, ensuring that the liquid temperature in the warm water tank is not too high. This setting is mainly suitable for ICU environment: ICU patients are likely to have fever, and continuous cooling of the patient is required, while avoiding burns caused by accidentally touching the warm water tank with too high temperature.

[0081] Further, a body temperature probe for monitoring the body temperature of the patient is further included. The body temperature probe is linked with the temperature adjustment module to adjust and control the working state of the temperature adjustment module in the water tank.

[0082] The temperature regulating liquid tank comprises a heat preservation mode, a cooling mode and a brain protection mode;

[0083] During the heat preservation mode, the water pump (8) continuously works, the body surface temperature regulating film is communicated with the warm water tank, the body temperature is greater than 37.8℃, the temperature regulating switch controls the temperature regulating module to stop working; the body temperature is less than 36.5℃, the temperature regulating switch controls the temperature regulating module to restart working; the body temperature is between 36.5℃ and 37.8℃, which is the best temperature during the operation, the enzyme activity of the human body is relatively high, the blood coagulation function keeps normal active state, meanwhile, the metabolism rate of each organ is basically normal, the oxygen consumption is not high, which is beneficial to reduce the bleeding amount and various complications.

[0084] Similarly, during the cooling mode, the water pump (8) continuously works, the body surface temperature regulating film is communicated with the cold water tank, the body temperature is greater than 37.0℃, the central controller controls the temperature regulating module to start working, the body temperature is less than 36.0℃, the central controller controls the temperature regulating module to stop working. When the fever patient is used, the body temperature of the patient is avoided to be too high, the basic metabolism of the patient is kept normal, the oxygen consumption is avoided to increase, so as to reduce the complications caused by the brain and heart.

[0085] During the brain protection mode, the water pump (8) continuously works, the body surface temperature regulating film is communicated with the cold water tank, the body temperature is less than 15℃, the central controller controls the temperature regulating module to stop working, greater than 20℃, the central controller controls the temperature regulating module to start working. 15℃-20℃ is the best temperature range of deep hypothermia, which can avoid the brain cell freezing injury and reduce the oxygen consumption of the brain, so as to reduce the complications caused by the brain cell anoxia and necrosis during the emergency resuscitation.

[0086] In the above, the body temperature is monitored by the body temperature probe, the body temperature data is transmitted to the central controller, the working state of the temperature regulating module is controlled through the central controller, and the body temperature of the patient is automatically controlled.

[0087] The heat preservation mode is mainly used for the wrapping or local heating of ordinary patients, the liquid temperature in the temperature regulating liquid tank is normally maintained at 42-45℃, and local scalding is avoided;

[0088] The cooling mode is mainly used for the wrapping or local cooling of patients with fever symptoms, the liquid temperature in the cold water tank is normally maintained at about 20-25℃, and local frostbite is avoided;

[0089] The brain protection mode is used for reducing the oxygen consumption of the brain of the patient, avoiding the brain anoxia injury, promoting the recovery of the brain function and the like, and the liquid temperature in the cold water tank is normally maintained at 5-15℃. The liquid temperature of 5-15℃ resists the heat brought by the blood flow of the patient, so as to realize the regulation of the temperature in the brain to 15-20℃.

[0090] In summary, the application can be used for patient intraoperative heat preservation, brain protection when the patient has an accident first aid; can also be used for fever patients to reduce temperature, to avoid scalding; supporting consumable body surface temperature regulating film is low in cost, can be discarded after use, and cross infection is avoided; temperature control is linked with body temperature control, the body temperature is regulated in the best range, the function is stronger than that of the existing product, the use is convenient, the technical difficulty is not great, and clinical transformation can be realized.

[0091] The above embodiments only exemplarily illustrate the principles and effects of the present patent application, and are not used to limit the present patent application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present patent application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present patent application should be covered by the claims of the present patent application.

Claims

1. A body surface temperature regulating film, characterized in that: It includes a soft inner thermal conductive film (1) and an outer film (2), and the inner thermal conductive film (1) and the outer film (2) are bonded together by several adhesive lines (3) to form several flow channels (4); The two free ends of the fluid flow path (4) are respectively connected to the temperature regulating inlet (41) and the temperature regulating outlet (42), and several fluid flow paths (4) are adjacent to form a body surface temperature regulating zone; The surface temperature regulation zone has an area of ​​2-200 dm² on the outer side of the inner thermal conductive film (1). 2 The bonding line (3) accounts for less than 18% of the area of ​​the body surface temperature regulation zone.

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 sidewall of the flow passage (4) and are provided with a number of protrusions (5) with a height of less than 2.8 mm; the protrusions (5) include scattered dot-shaped protrusions or linear protrusions parallel to the 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 fluid flow passage (4) is less than 15 L.

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

5. The body surface temperature regulating film according to claim 4, characterized in that: The body surface temperature regulation zone is inlaid with a liquid infusion temperature control pipeline between adjacent liquid flow channels (4), and Luer male interface and Luer female interface are respectively provided at both ends of the liquid infusion temperature control pipeline exiting the body surface temperature regulation zone; Alternatively, the body surface temperature regulation area is recessed between adjacent fluid passages (4) to provide infusion heating grooves for holding the infusion tubing, and the two ends of the infusion heating grooves are respectively provided with fixers for temporarily fixing the infusion tubing, the fixers including clips, clip rings, or clips.

6. A temperature-regulating liquid tank, characterized in that: It includes 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 control switch (7); the temperature control switch is linked with 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, the temperature control switch is turned on, and 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 uses a cooling element, 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 cooling element. The cooling side of the cooling element is attached to the cold water tank, and the heating side of the cooling element is attached to the warm water tank. The water tank regulating switch (7) connects either the cold water tank or the warm water tank to the body surface temperature regulating membrane in a circulating manner.

8. The temperature-regulating liquid tank according to claim 7, characterized in that: The cold water tank is also equipped with a heater and a cold water temperature sensor. The cold water temperature sensor is connected to the central controller via an electrical signal 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 equipped with a radiator and a warm water temperature sensor. The warm water temperature sensor is connected to the central controller via an electrical signal 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 with 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 set for the cold water tank and a warm light is set for the warm water tank. Both the cold light and the warm light are linked to the water tank control switch (7). When the water tank control switch (7) selects the temperature control membrane on the surface of the cold water tank, the water pump (8) works, the cold light is on, and the warm light is off. When the water tank control switch (7) selects the temperature control membrane on the surface of the warm water tank, 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 temperature-regulating liquid tank has three operating modes: heat preservation mode, cooling mode, and brain protection mode. During the heat preservation mode, the body surface temperature regulating film covers the patient's body surface and is connected to the warm water tank. The water pump (8) works continuously. When the body temperature is greater than 37.0℃, the temperature regulating switch controls the temperature regulating module to stop working; when the body temperature is less than 36.5℃, 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. The water pump (8) works continuously. When the body temperature is greater than 37.5℃, the central controller controls the temperature regulating module to start working. When the body temperature is less than 37.0℃, the central controller controls the temperature regulating module to stop working. During brain protection mode, the body surface temperature regulating film wraps around the patient's head and neck and connects to the cold water tank. The water pump (8) works continuously. When the body temperature is below 15°C, the central controller controls the temperature regulating module to stop working; when the body temperature is above 25°C, the central controller controls the temperature regulating module to restart working.

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