Body temperature maintaining device

Abstract

The invention relates to medical experiment equipment and discloses a body temperature maintaining device which comprises a constant-temperature water bath kettle, a containing bottle, a circulating water pump, a water-cooling heat dissipation plate, a heat conduction pipe, a backflow pipe, a digital anal thermometer and a temperature recorder. The constant-temperature water bath kettle comprises a heater, a water tank and a ferrule, the heater is used for heating water bath liquid to a target temperature, and the ferrule is mounted at the top of the water tank; the containing bottle is clamped into the ferrule, so that the bottom of the containing bottle is in contact with the water bath liquid, and the containing bottle is used for containing heat conduction liquid; the circulating water pump is arranged in the containing bottle and comprises a water inlet and a water outlet, and the circulating water pump sucks the heat conduction liquid from the containing bottle and discharges the heat conduction liquid from the water outlet; the water-cooling heat dissipation plate comprises a heat exchange opening, a backflow opening and an internal pipeline, and the internal pipeline is communicated with the outside through the heat exchange opening and the backflow opening. The heat conduction pipe is used for guiding heat conduction liquid into the internal pipeline; the backflow pipe is used for enabling the heat conduction liquid in the internal pipeline to flow back to the containing bottle; and the temperature recorder is connected with the digital anal thermometer.

Description

Technical Field

[0001] The present application relates to medical experimental equipment, and in particular to a body temperature maintaining device. Background Art

[0002] As medical research on surgical hypothermia deepens, the problem of hypothermia during animal anesthesia has received increasing attention. Hypothermia not only seriously affects the perioperative survival rate of experimental animals, but may also interfere with experimental results. Therefore, it is crucial to warm anesthetized animals and control the temperature during the perioperative period to avoid excessive burns. At present, existing heating pads mainly rely on heat conduction heating by fitting against the back of the animal, which has the problem of unstable heating. Summary of the invention

[0003] The technical problem to be solved by the present application is that the heating is unstable when the body temperature is maintained.

[0004] In order to solve the above technical problems, the present application provides a body temperature maintenance device, which is specifically implemented by the following scheme:

[0005] The body temperature maintenance device includes: a constant temperature water bath, which includes a heater, a water tank and a ring. The heater is installed at the bottom of the water tank, and the water tank contains water bath liquid. The heater is used to heat the water bath liquid to a target temperature, and the ring is installed at the top of the water tank; a containing bottle, the containing bottle is inserted into the ring so that the bottom of the containing bottle contacts the water bath liquid, and the containing bottle is used to contain heat transfer liquid; a circulating water pump, the circulating water pump is placed in the containing bottle, and the circulating water pump includes a water inlet and a water outlet. The water inlet is arranged at the bottom of the circulating water pump. When the circulating water pump is in operation, the heat transfer liquid is sucked from the containing bottle and discharged from the water outlet; a water-cooled heat sink, the water-cooled heat sink The hot plate includes a heat exchange port, a reflux port and an internal pipeline, the internal pipeline is connected to the outside of the water-cooled heat sink via the heat exchange port and the reflux port, and the water-cooled heat sink is used to place the animal whose body temperature needs to be maintained; a heat pipe, the heat pipe is connected to the heat exchange port and the water outlet, and the heat pipe is used to introduce the heat transfer fluid into the internal pipeline; a reflux pipe, the reflux pipe is connected to the reflux port and the containing bottle, and the reflux pipe is used to return the heat transfer fluid that has absorbed excess heat in the internal pipeline to the containing bottle; a digital rectal thermometer, the digital rectal thermometer is used to measure the rectal temperature of the animal whose body temperature needs to be maintained; a temperature recorder, the temperature recorder is connected to the digital rectal thermometer, and is used to record the rectal temperature collected by the digital rectal thermometer.

[0006] In one embodiment, the constant temperature water bath further includes an adjustment button and a display screen, the display screen is used to display the target temperature, and the adjustment button is used to adjust the target temperature.

[0007] In another embodiment, a plurality of heat dissipation fins are provided at the bottom of the water-cooled heat sink, and the heat dissipation fins are used to dissipate the heat of the water-cooled heat sink into the air.

[0008] In another embodiment, the body temperature maintaining device further includes a PTC temperature sensing probe and a fan. The fan is disposed on a side of the water-cooled heat sink. The PTC temperature sensing probe and the fan are connected in parallel. The PTC temperature sensing probe extends into the accommodating bottle.

[0009] In yet another embodiment, the temperature measurement range of the digital rectal thermometer is 20 degrees Celsius to 80 degrees Celsius, and the temperature measurement accuracy of the digital rectal thermometer is 0.1 degrees Celsius.

[0010] In one embodiment, the water-cooled heat sink further includes a thermal insulation layer, and the thermal insulation layer is laid on the top of the water-cooled heat sink.

[0011] In yet another embodiment, the constant temperature water bath further comprises a partition, and the partition is arranged between the heater and the containing bottle.

[0012] In another embodiment, the circulating water pump further comprises a filter screen, which is arranged at the water inlet and is used to filter impurities in the thermal fluid.

[0013] In another embodiment, the water-cooled heat sink also includes a pressure probe, which is installed at the bottom of the water-cooled heat sink. The feedback line of the pressure probe is connected to a constant temperature water bath, and the constant temperature water bath is also used to adjust the heating power of the heater according to the pressure detected by the pressure probe.

[0014] In one embodiment, the water-cooled heat sink includes a plurality of sub-heat sinks, which are connected in series. The sub-heat sinks include internal sub-pipes. The heat transfer fluid entering the water-cooled heat sink from the heat exchange port flows through the plurality of internal sub-pipes and then flows out of the water-cooled heat sink from the return port.

[0015] Compared with the prior art, the body temperature maintenance device of the present application has the following beneficial effects:

[0016] The body temperature maintenance device of the embodiment of the present application adopts water bath heating. In the existing scheme, the animal is directly in contact with the heater. The heater is usually metal with low specific heat capacity, so the temperature fluctuates greatly. However, the present application adopts water bath heating. Both the water bath liquid and the heat transfer liquid have high specific heat capacity. Therefore, even if the power supply or the heating power of the heater fluctuates, the impact on the temperature maintenance effect is small. At the same time, using a water-cooled heat sink as an object in contact with the animal can dissipate excess heat to a certain extent and avoid heat accumulation. The water-cooled heat sink combined with water bath heating can better reduce the probability of excessive temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a body temperature maintenance device exemplarily shown in an embodiment of the present application.

[0018] Figure 2 It is a partial structural diagram of a body temperature maintenance device exemplarily shown in an embodiment of the present application.

[0019] Figure 3 It is a cross-sectional schematic diagram of a constant temperature water bath pot exemplarily shown in an embodiment of the present application.

[0020] Reference numerals:

[0021] 1. Body temperature maintenance device, 10. Constant temperature water bath, 101. Heater, 102. Sink, 103. Ring, 104. Bath liquid, 105. Adjustment button, 106. Display screen, 107. Partition, 11. Container bottle, 111. Thermal fluid, 12. Circulating water pump, 121. Water inlet, 122. Water outlet, 123. Filter, 13. Water-cooled heat sink, 131. Heat exchange port, 132. Reflux port, 133. Internal pipeline, 134. Heat dissipation fins, 135. Pressure probe, 136. Insulation layer, 14. Heat conduction pipe, 15. Reflux pipe, 16. Digital rectal thermometer, 17. Temperature recorder, 18. PTC temperature sensor, 19. Fan, 2. Animals whose body temperature is to be maintained. DETAILED DESCRIPTION

[0022] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, a body temperature maintaining device 1 of a preferred embodiment of the present application is provided, and the body temperature maintaining device 1 includes: a constant temperature water bath 10, a containing bottle 11, a circulating water pump 12, a water-cooled heat sink 13, a heat pipe 14, a reflux pipe 15, a digital rectal thermometer 16, and a temperature recorder 17.

[0024] The constant temperature water bath 10 may include a heater 101 , a water tank 102 and a ring 103 . The heater 101 is installed at the bottom of the water tank 102 . The water tank 102 contains a bath liquid 104 . The heater 101 is used to heat the bath liquid 104 to a target temperature. The ring 103 is installed at the top of the water tank 102 .

[0025] The accommodating bottle 11 is inserted into the ring 103 so that the bottom of the accommodating bottle 11 contacts the water bath liquid 104. The accommodating bottle 11 is used to contain the thermal conductive liquid 111. The circulating water pump 12 is placed in the accommodating bottle 11. The circulating water pump 12 includes a water inlet 121 and a water outlet 122. The water inlet 121 is arranged at the bottom of the circulating water pump 12. When the circulating water pump 12 is in operation, it absorbs the thermal conductive liquid 111 from the accommodating bottle 11 and discharges the thermal conductive liquid 111 from the water outlet 122.

[0026] The water-cooled heat sink 13 includes a heat exchange port 131 , a return port 132 and an internal pipe 133 . The internal pipe 133 is connected to the outside of the water-cooled heat sink 13 via the heat exchange port 131 and the return port 132 . The water-cooled heat sink 13 is used to place the animal 2 whose body temperature needs to be maintained.

[0027] The heat pipe 14 connects the heat exchange port 131 and the water outlet 122, and is used to guide the heat transfer liquid 111 into the internal pipe 133. The reflux pipe 15 connects the reflux port 132 and the accommodating bottle 11, and is used to return the heat transfer liquid 111 absorbed by the internal pipe 133 to the accommodating bottle 11.

[0028] The digital rectal thermometer 16 is used to measure the rectal temperature of the animal 2 whose body temperature is to be maintained. The temperature recorder 17 is connected to the digital rectal thermometer 16 and is used to record the rectal temperature collected by the digital rectal thermometer 16.

[0029] Through the above scheme, a combination of water bath heating and water-cooled heat sink 13 is adopted, and by virtue of the large specific heat capacity of the liquid, even if the power supply or the heating power of the heater 101 fluctuates, the effect on the temperature maintenance effect is small. At the same time, the water-cooled heat sink 13 is used as an object in contact with the animal, which can dissipate excess heat to a certain extent and avoid heat accumulation, so that the body temperature maintenance device 1 can still maintain a stable temperature under large power fluctuations, which can effectively improve the problem of unstable heating.

[0030] For experiments that require long-term observation of the physiological state of animals, such as experiments to explore the effect of motion sickness on the anesthesia duration of mice, the body temperature maintenance device 1 can continuously and stably control the animal's body temperature, ensuring that the experiment is conducted under the same temperature conditions, thereby increasing the credibility of the experimental results.

[0031] At the same time, since the surface temperature of the water-cooled heat sink 13 is relatively uniform, the experimental animals will not feel local overheating or overcooling when in contact, which improves the comfort of the animals during the experiment and reduces the stress response of the animals due to discomfort, thereby helping to obtain more accurate experimental results.

[0032] On this basis, in one embodiment, the constant temperature water bath 10 may further include an adjustment button 105 and a display screen 106, wherein the display screen 106 is used to display the target temperature, and the adjustment button 105 is used to adjust the target temperature.

[0033] By adjusting the button 105 and the display screen 106, the temperature can be adjusted more intuitively, which is convenient for use. For animals of different body sizes and body temperatures, the target temperature corresponding to the required body temperature can be quickly adjusted.

[0034] In another embodiment of the present application, a plurality of heat dissipation fins 134 may be provided at the bottom of the water-cooled heat sink 13 , and the heat dissipation fins 134 are used to dissipate the heat of the water-cooled heat sink 13 into the air.

[0035] By designing a plurality of heat dissipation fins 134 , the heat dissipation efficiency can be improved and the possibility of overheating of the water-cooled heat sink 13 can be reduced as much as possible.

[0036] At the same time, the heat dissipation fins 134 can appropriately reduce the weight of the water-cooled heat sink 13 , reduce the use of heat-conducting materials, and reduce costs.

[0037] Since the heat dissipation fins 134 can effectively increase the heat dissipation surface area without significantly increasing the overall volume of the water-cooled heat sink 13, it can effectively ensure the smooth progress of the experiment in some environments with limited experimental space, and can avoid occupying too much experimental table or operating space while ensuring good heat dissipation effect, making the experimental layout more compact and reasonable.

[0038] like Figure 2 As shown, in another embodiment, the body temperature maintaining device 1 also includes a PTC temperature sensing probe 18 and a fan 19. The fan 19 is arranged on the side of the water-cooled heat sink 13. The PTC temperature sensing probe 18 and the fan 19 are connected in parallel. The PTC temperature sensing probe 18 extends into the accommodating bottle 11.

[0039] Since the resistance of the PTC temperature probe 18 increases with the increase of temperature, when the temperature is high, the resistance of the PTC temperature probe 18 increases. Therefore, the fan 19 connected in parallel with the PTC temperature probe 18 can obtain a higher voltage, thereby increasing the rotation speed, further improving the heat dissipation efficiency, and maintaining a balance between heating and heat dissipation.

[0040] Exemplarily, the temperature measurement range of the digital rectal thermometer 16 used in the present application is 20 degrees Celsius to 80 degrees Celsius, and the temperature measurement accuracy of the digital rectal thermometer 16 is 0.1 degrees Celsius. 20 degrees Celsius to 80 degrees Celsius can cover the needs of most animals to maintain body temperature, and are all within the temperature range that can be provided by water bath heating.

[0041] To improve comfort, Figure 1 and Figure 2 As shown, in one embodiment, the water-cooled heat sink 13 may further include a thermal insulation layer 136 , and the thermal insulation layer 136 is laid on the top of the water-cooled heat sink 13 .

[0042] The experimental animals will not feel local overheating or overcooling when in contact, which improves the comfort of the animals during the experiment and reduces the stress response of the animals due to discomfort.

[0043] For example, Figure 3 As shown, the constant temperature water bath 10 may further include a partition 107 , which is disposed between the heater 101 and the accommodating bottle 11 .

[0044] If the accommodating bottle 11 directly contacts the heater 101, the heat transfer fluid 111 in the accommodating bottle 11 may be in thermal runaway, and a large amount of heat will be concentrated in the accommodating bottle 11. However, due to the presence of the partition 107, even if the position of the accommodating bottle 11 changes, it is difficult to directly contact the heater 101, thereby reducing the probability of experimental accidents.

[0045] At the same time, the partition 107 acts as a physical barrier, further ensuring that even if there is an unexpected external impact or equipment vibration during the experiment, the accommodating bottle 11 will not easily come into direct contact with the heater 101. This greatly reduces the probability of dangerous situations such as the rupture of the accommodating bottle 11 and the leakage of the thermal fluid 111 due to sudden thermal shock, providing higher safety protection for the experimenters and the experimental environment.

[0046] In any embodiment of the present application, the circulating water pump 12 may further include a filter screen 123 , which is disposed at the water inlet 121 , and is used to filter impurities in the thermal liquid 111 .

[0047] By providing the filter 123, impurities in the thermal fluid 111 can be prevented from entering the circulating water pump 12. Impurities may include particulate matter, sediment, etc. If these impurities enter the circulating water pump 12, they may wear the internal components of the pump, such as the impeller, bearings, etc., and reduce the service life of the circulating water pump 12. Through the filtering effect of the filter 123, the damage of impurities to the circulating water pump 12 can be effectively reduced, its service life can be extended, and the equipment maintenance cost can be reduced.

[0048] Filtering impurities helps to maintain the cleanliness of the thermal liquid 111. During long-term use, the thermal liquid 111 may be mixed with impurities due to various reasons, such as falling objects on the inner wall of the container, dust in the external environment, etc. The filter 123 can remove these impurities in time and keep the thermal liquid 111 clean, thereby ensuring the thermal conductivity of the thermal liquid 111 is stable and ensuring the temperature control accuracy of the constant temperature water bath 10.

[0049] In the experimental environment, reducing impurities means reducing the probability of damaging the circulating water pump 12 or other components through which the thermal fluid 111 flows. With the filtering effect of the filter 123, the probability of system failure can be reduced, the stability and reliability of the system can be improved, and the experiment can be ensured to proceed smoothly.

[0050] In another embodiment of the present application, the water-cooled heat sink 13 may further include a pressure probe 135, which is installed at the bottom of the water-cooled heat sink 13. The feedback line of the pressure probe 135 is connected to the constant temperature water bath 10, and the constant temperature water bath 10 is also used to adjust the heating power of the heater 101 according to the pressure detected by the pressure probe 135.

[0051] The pressure probe 135 can sense the weight of the animal on the water-cooled heat sink 13, and then adjust the heating power to adapt to the heating needs of animals of different sizes.

[0052] For example, if a mouse weighs 200 grams, setting the heating power to 80 watts can meet the temperature increase and maintenance requirements, while a rabbit weighing 4000 grams or mice whose weight remains the same but the number increases, requires a larger heating power.

[0053] The heating power is positively correlated with the pressure. The specific corresponding ratio and function curve are designed according to the actual experimental requirements, ambient temperature, ambient humidity, etc., and this application does not impose any restrictions.

[0054] In one embodiment, the water-cooled heat sink 13 includes a plurality of sub-heat sinks, which are connected in series. The sub-heat sinks include internal sub-pipes. The heat transfer fluid 111 enters the water-cooled heat sink 13 from the heat exchange port 131 and flows through the plurality of internal sub-pipes before flowing out of the water-cooled heat sink 13 from the return port 132 .

[0055] The water-cooled heat sink 13 is divided into a plurality of sub-heat sinks connected in series, and the size of the water-cooled heat sink 13 can be adjusted according to the experimental object for reasonable arrangement, thereby reducing heat waste and increasing the adaptability of the body temperature maintenance device 1.

[0056] At the same time, each sub-heat sink can receive the heat from the thermal fluid 111 and dissipate it to the surrounding environment. Compared with a single large heat sink, this design can reduce local overheating or overcooling, improve the uniformity of heat dissipation, and thus better maintain the temperature stability of the experimental animal contact area.

[0057] Since the thermal conductive liquid 111 flows through multiple internal sub-pipes, its flow path in each sub-heat sink is relatively short, which enables the thermal conductive liquid 111 to transfer heat to the sub-heat sink faster, thereby improving the heat dissipation efficiency. At the same time, the shorter flow path also reduces the energy loss of the thermal conductive liquid 111 during the flow process, ensuring that the heat can be dissipated more effectively.

[0058] The body temperature maintenance device 1 of the embodiment of the present application adopts water bath heating. In the existing scheme, the animal is directly in contact with the heater 101. The heater 101 is usually metal with a low specific heat capacity, so the temperature fluctuates greatly. However, the present application adopts water bath heating. The water bath liquid 104 and the thermal conductive liquid 111 both have a high specific heat capacity. Therefore, even if the power supply or the heating power of the heater 101 fluctuates, the impact on the temperature maintenance effect is small. At the same time, the water-cooled heat sink 13 is used as an object in contact with the animal, which can dissipate excess heat to a certain extent and avoid heat accumulation. The water-cooled heat sink 13 combined with water bath heating can better reduce the probability of excessive temperature.

[0059] On this basis, improvements were proposed in turn for specific experimental details, such as adjusting the heat dissipation power according to temperature, technical means for objects of different weights, and technical means for objects of different body shapes, in order to overcome the various difficulties of current experimental conditions and provide value for medical research.

[0060] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present application. These improvements and substitutions should also be regarded as the scope of protection of the present application.

Claims

1. A body temperature maintenance device, characterized in that: The body temperature maintenance device (1) comprises: A constant temperature water bath (10), the constant temperature water bath (10) comprising a heater (101), a water tank (102) and a ring (103), the heater (101) being installed at the bottom of the water tank (102), the water tank (102) containing a water bath liquid (104), the heater (101) being used to heat the water bath liquid (104) to a target temperature, and the ring (103) being installed at the top of the water tank (102); A containing bottle (11), the containing bottle (11) being inserted into the sleeve (103) so that the bottom of the containing bottle (11) is in contact with the water bath liquid (104), and the containing bottle (11) is used to contain a heat transfer liquid (111); a circulating water pump (12), the circulating water pump (12) being disposed in the containing bottle (11), the circulating water pump (12) comprising a water inlet (121) and a water outlet (122), the water inlet (121) being disposed at the bottom of the circulating water pump (12), and the circulating water pump (12) sucking the heat transfer liquid (111) from the containing bottle (11) and discharging the heat transfer liquid (111) from the water outlet (122) when in operation; A water-cooled heat sink (13), the water-cooled heat sink (13) comprising a heat exchange port (131), a return port (132) and an internal pipe (133), the internal pipe (133) being connected to the outside of the water-cooled heat sink (13) via the heat exchange port (131) and the return port (132), the water-cooled heat sink (13) being used to place an animal (2) whose body temperature is to be maintained; a heat conducting pipe (14), the heat conducting pipe (14) connecting the heat exchange port (131) and the water outlet (122), the heat conducting pipe (14) being used to guide the heat conducting liquid (111) into the internal pipe (133); a reflux pipe (15), the reflux pipe (15) connecting the reflux port (132) and the accommodating bottle (11), the reflux pipe (15) being used to return the heat-conducting liquid (111) that has absorbed excess heat in the internal pipe (133) to the accommodating bottle (11); A digital rectal thermometer (16), the digital rectal thermometer (16) being used to measure the rectal temperature of the animal (2) whose body temperature is to be maintained; A temperature recorder (17), the temperature recorder (17) is connected to the digital rectal thermometer (16) and is used to record the rectal temperature collected by the digital rectal thermometer (16).

2. The body temperature maintenance device according to claim 1, characterized in that: The constant temperature water bath (10) further comprises an adjustment button (105) and a display screen (106), wherein the display screen (106) is used to display the target temperature, and the adjustment button (105) is used to adjust the target temperature.

3. The body temperature maintenance device according to claim 1, characterized in that: A plurality of heat dissipation fins (134) are provided at the bottom of the water-cooled heat dissipation plate (13), and the heat dissipation fins (134) are used to dissipate the heat of the water-cooled heat dissipation plate (13) into the air.

4. The body temperature maintenance device according to claim 3, characterized in that: The body temperature maintaining device (1) further comprises a PTC temperature sensing probe (18) and a fan (19), wherein the fan (19) is arranged on the side of the water-cooled heat sink (13), the PTC temperature sensing probe (18) and the fan (19) are connected in parallel, and the PTC temperature sensing probe (18) extends into the containing bottle (11).

5. The body temperature maintenance device according to claim 1, characterized in that: The temperature measurement range of the digital rectal thermometer (16) is 20 degrees Celsius to 80 degrees Celsius, and the temperature measurement accuracy of the digital rectal thermometer (16) is 0.1 degrees Celsius.

6. The body temperature maintenance device according to claim 1, characterized in that: The water-cooled heat sink (13) further comprises a heat-insulating layer (136), wherein the heat-insulating layer (136) is laid on top of the water-cooled heat sink (13).

7. The body temperature maintenance device according to claim 1, characterized in that: The constant temperature water bath (10) further comprises a partition (107), wherein the partition (107) is arranged between the heater (101) and the containing bottle (11).

8. The body temperature maintenance device according to claim 1, characterized in that: The circulating water pump (12) further comprises a filter screen (123), wherein the filter screen (123) is arranged at the water inlet (121), and the filter screen (123) is used to filter impurities in the thermal fluid (111).

9. The body temperature maintenance device according to claim 1, characterized in that: The water-cooled heat sink (13) further comprises a pressure probe (135), wherein the pressure probe (135) is mounted at the bottom of the water-cooled heat sink (13), and a feedback line of the pressure probe (135) is connected to the constant temperature water bath (10), and the constant temperature water bath (10) is further used to adjust the heating power of the heater (101) according to the pressure detected by the pressure probe (135).

10. The body temperature maintenance device according to claim 1, characterized in that: The water-cooled heat sink (13) comprises a plurality of sub-heat sinks, the plurality of sub-heat sinks are connected in series, the sub-heat sinks comprise internal sub-pipes, the heat transfer fluid (111) entering the water-cooled heat sink (13) from the heat exchange port (131) flows through the plurality of internal sub-pipes and then flows out of the water-cooled heat sink (13) from the return port (132).

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