WO2023108795A1 - Medical solid-state variable-temperature blanket - Google Patents

Abstract

A medical solid-state variable-temperature blanket, comprising base housings (1). Each base housing (1) is provided with a heat dissipation base (2); the upper surface of the heat dissipation base (2) is provided with a graphite easily-conductive film layer (3); semiconductor cooling/heating modules (6) are provided between the graphite easily-conductive film layer (3) and the heat dissipation base (2); the semiconductor cooling/heating modules (6) are connected to a power supply by means of an intelligent temperature controller (7); the intelligent temperature controller (7) controls, according to a real-time human body temperature signal fed back by a high-sensitivity temperature sensor connected to a human body, the semiconductor cooling/heating modules (6) to select heating/cooling. The solid-state variable-temperature blanket overcomes the problems in the traditional liquid variable-temperature blanket that water replacement is complicated and an aerosol easily pollutes the environment, and the problem that during use, the liquid variable-temperature blanket is easily pressed by the body of a patient, resulting in deformation of a water supply pipeline and uneven temperature supply. The solid-state variable-temperature blanket has no leakage, outstanding sterilization performance and high reliability, features light weight, portability, durability, easy maintenance and low cost, are both practical and safe, and can achieve application of semiconductor temperature control technology in the field of extracorporeal circulation to temperature varying requirements.

Description

A medical solid-state temperature-changing blanket technical field

The present application relates to the technical field of medical equipment, in particular to a medical solid-state temperature-changing blanket.

Background technique

The medical temperature-changing blankets in the prior art are water-cooled temperature-changing blankets or other liquid temperature-changing blankets. The medical temperature-changing blankets in the prior art have the following defects: 1. The cold-heat switching response caused by the large thermal inertia of water in the traditional liquid temperature-changing blankets 2. The deformation of the water supply pipeline and the uneven temperature caused by the pressure of the patient's body during use; 3. The hidden danger of infection caused by the leakage of the liquid temperature-changing blanket; 4. The cumbersome water change and aerosol pollution problems5 , killing more troublesome, low reliability.

Contents of the invention

The purpose of the present invention is to provide a medical solid-state temperature-variable blanket that fundamentally eliminates the problems of cumbersome water changes, aerosol pollution, and other problems in traditional liquid temperature-variable blankets.

In order to achieve the purpose of the present invention, the technical solution provided by the present invention is: a medical solid-state temperature-changing blanket, including a base shell, a heat-dissipating base is arranged on the base shell, and a graphite easy-conducting film is arranged on the upper surface of the heat-dissipating base layer, a semiconductor refrigeration/heating module is arranged between the graphite easily conductive film layer and the heat dissipation base, and the semiconductor refrigeration/heating module is connected to the power supply through an intelligent temperature controller; The real-time human body temperature signal fed back by the sensor controls the semiconductor refrigeration/heating module to choose heating/cooling. The semiconductor refrigeration/heating module is a Peltier thermoelectric refrigeration/heating module, and the intelligent temperature controller controls the Peltier thermoelectric refrigeration/heating module to select heating/cooling based on a PID algorithm. The upper surface of the graphite easily conductive film layer is also covered with a high thermal conductivity surface coating layer. Both sides of the heat dissipation base are provided with heat dissipation fans. The heat dissipation base is a heat dissipation fin base.

The present invention also provides another technical solution: a medical solid-state temperature-changing blanket, including a base shell, a heat dissipation base is arranged on the base shell, and a graphite easy-to-conduct film layer is arranged on the upper surface of the heat-radiation base, and the graphite is easy to conduct A semiconductor refrigeration/heating module is arranged between the film layer and the heat dissipation base, and the semiconductor refrigeration/heating module is connected to the power supply through an intelligent temperature controller; each base shell is shaped into a temperature-changing blanket module unit, and more than two temperature-changing blanket module units Sequential collapsible connections.

Preferably, adjacent temperature-changing blanket module units are foldably connected through installation hinges. Handles are provided on both sides of the temperature-changing blanket module unit.

The beneficial effects of the present invention are:

To sum up, it can be clarified that the design scheme of this temperature-changing blanket is compared with the current temperature-changing blanket products. The scheme is reliable, with obvious characteristics and remarkable excellence, which is specifically reflected in the following aspects:

1. Fundamentally eliminate the cumbersome water change and aerosol pollution problems of traditional liquid temperature-changing blankets, as well as the deformation of water supply pipelines and uneven temperature problems caused by the gravity of patients during use. The design of pure solid-state temperature-changing blanket avoids the hidden danger of infection caused by the leakage of liquid temperature-changing blanket from the structure, and has the characteristics of no leakage, outstanding disinfecting performance and high reliability.

2. It solves the problem of slow cooling and heating switching response caused by the large thermal inertia of water in the traditional liquid temperature-changing blanket. The invention can quickly realize the switching of cooling and heating functions through the adjustment of the reverse power switch. It adopts semiconductor refrigeration/heating temperature control method combined with air-cooled fin heat dissipation under-body variable temperature blanket design, which has low use and maintenance costs, high temperature control accuracy, and has the characteristics of rapid temperature change. The total cooling power provided by the overall variable temperature blanket reaches 388.8W, which fully meets the cooling needs of the human body.

3. It has strong practicability and safety such as light weight, portability, durability, easy maintenance, and low cost. The 3-fold folding underbody temperature-changing blanket solution can greatly reduce the occupied space. The design of 12V DC power supply can be quickly connected to mobile power supply in special scenarios such as vehicles and outdoors, without the safety problem of electric shock. With the means of portable UPS power supply, it can deal with the loss of function of the temperature-changing blanket caused by sudden power failure.

4. It can greatly expand the usage scenarios of variable temperature blankets, and can adapt to various emergency rescue scenarios such as emergency external compression, ambulance transfer, and mild hypothermia treatment scenarios. Aiming at the problem of loss of the temperature-changing function caused by the pressure of the pipeline when the water-cooled pipeline of the traditional water-cooled temperature-changing blanket is pressed outside the heart during emergency rescue, a new structural design with higher rigidity is adopted to achieve high-strength compression resistance of the temperature-changing blanket. It can be used in scenarios such as ambulances.

5. The lightweight folding underbody temperature-changing blanket solution is convenient and practical and greatly reduces the occupied space. Through the three-fold design, the storage size of the temperature-changing blanket is only 1/3 of that in use, and the total weight of 8kg can adapt to the daily operations of various medical staff.

6. The world's first application of semiconductor temperature control technology in the field of extracorporeal circulation. According to clinical use and related literature, patents and consulting searches, there is no similar technology application and product in the world.

Description of drawings

Fig. 1 is the exploded schematic diagram of three-dimensional structure of the present invention;

Fig. 2 is a schematic diagram of the structure of the storage state of the present invention;

Fig. 3 is a structural schematic diagram of the unfolded state of the present invention;

Fig. 4 is a schematic diagram of the structure of the final state of the present invention;

Fig. 5 is a schematic diagram of the practical application of the present invention.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

Fig. 1 is a three-dimensional structure exploded schematic diagram of the present invention, as shown in Fig. 1, the medical solid-state temperature-variable blanket of the present invention includes a base shell 1, and a heat dissipation base 2 is arranged on the base shell 1, and the heat dissipation base 2 is a heat dissipation fin Sheet base, the both sides of heat dissipation base 2 are provided with cooling fan 5. The upper surface of the heat dissipation base 2 is provided with a graphite easily conductive film layer 3, and the upper surface of the graphite easily conductive film layer 3 is also covered with a high thermal conductivity surface coating layer 4. The high thermal conductivity surface coating layer 4 effectively improves the temperature uniformity of the surface of the temperature-changing blanket. A semiconductor refrigeration/heating module 6 is arranged between the graphite easily conductive film layer 3 and the heat dissipation base 2, and the semiconductor refrigeration/heating module 6 is a Peltier thermoelectric refrigeration/heating module, and the semiconductor refrigeration/heating module 6 is controlled by intelligent control. The thermostat 7 is connected to a power supply; wherein, the intelligent thermostat 7 controls the Peltier thermoelectric cooling/warming module to select heating/cooling based on the PID algorithm based on the real-time human body temperature signal fed back by a high-sensitivity temperature sensor connected to the human body.

Among them, regarding the selection of components, the semiconductor refrigeration/heating module 6 is calculated based on the fact that the total heating power of the organs and tissues around the human body is not higher than 200W in a resting state. Below 200W. Considering the influence of heat leakage, taking a margin of 1.5, the cooling power of the variable temperature blanket should reach 300W. Therefore, the single variable temperature blanket module of this scheme is equipped with 8 semiconductor refrigeration/heating modules 6, each with a power of 16.2W, the total cooling power of a single variable temperature blanket is 129.6W, and the total cooling power provided by the overall variable temperature blanket reaches 388.8W. Meet the cooling needs of the human body.

Table 1 List of selection parameters of semiconductor refrigeration/heating module 6

model	Dimensions mm	Number of component pairs	Maximum voltage V/current A	Maximum cooling capacity W	Maximum temperature difference K
CP-07103	30*30*3.6	71	8.6/3.4	16.2	65

fan

The temperature at the hot end of the semiconductor refrigeration/heating module 6 is lost by the fin base. In order to increase the heat dissipation efficiency of the fins, each variable temperature blanket module is equipped with 9 to 12 miniature axial flow fans for forced convection. Table 2 gives the specific parameters of the fans .

Table 2 List of fan selection parameters

Fig. 2 is a schematic diagram of the structure of the storage state of the present invention, Fig. 3 is a schematic diagram of the structure of the unfolded state of the present invention, and Fig. 4 is a schematic diagram of the structure of the final state of deployment of the present invention, wherein each of the above-mentioned base shells 1 is formed into a variable temperature blanket module unit 8, two The temperature-changing blanket module units 8 above the blocks are sequentially and foldably connected. Adjacent temperature-changing blanket module units 8 are foldably connected through installation hinges 10 . Handles 9 are provided on both sides of the temperature-changing blanket module unit 8 . As shown in Figure 2, the three temperature-changing blanket module components are linked together through installation hinges, which can be quickly opened and folded, which can greatly save the energy of clinical medical staff and logistics maintenance personnel. The unfolded size is 1500mm×550mm×30mm (shown in Figure 4), the volume of the folded temperature-changing blanket is only 500mm×550mm×90mm (shown in Figure 2), and the total weight is about 15kg.

Fig. 5 is a schematic diagram of the practical application of the present invention. As shown in Fig. 5, the foldable temperature-changing blanket is opened and laid on the bed during use, and a disposable protective sheet is laid between the human body and the temperature-changing blanket to isolate the patient's body/body fluid /Blood is in direct contact with the surface of the temperature-changing blanket, covered with a thermal insulation quilt to keep the human body warm, and the temperature monitoring status and temperature control are displayed through the thermostat.

The described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

Claims (8)

1. A medical solid-state temperature-variable blanket, comprising a base shell, characterized in that, the base shell is provided with a heat dissipation base, and the upper surface of the heat dissipation base is provided with a graphite easy-to-conduct film layer, and the graphite easy-to-conduct film layer and the heat-dissipation base A semiconductor refrigeration/heating module is provided, and the semiconductor refrigeration/heating module is connected to a power supply through an intelligent temperature controller; wherein, the intelligent temperature controller controls the semiconductor refrigeration/heating module according to the real-time human body temperature signal fed back by a high-sensitivity temperature sensor connected to the human body. The heating module selects heating/cooling.
2. A medical solid-state temperature-variable blanket according to claim 1, wherein the semiconductor refrigeration/heating module is a Peltier thermoelectric refrigeration/heating module, and the intelligent temperature controller controls Peltier based on the PID algorithm. Stick thermoelectric cooling/heating module to choose heating/cooling.
3. The medical solid temperature variable blanket according to claim 1, characterized in that the upper surface of the graphite easily conductive film layer is also covered with a high thermal conductivity surface coating layer.
4. The medical solid-state variable temperature blanket according to claim 1, wherein cooling fans are arranged on both sides of the cooling base.
5. The medical solid-state variable temperature blanket according to claim 1, wherein the heat dissipation base is a heat dissipation fin base.
6. A medical solid-state temperature-changing blanket adopting any one of claims 1-5, wherein each base shell is shaped as a temperature-changing blanket module unit, and more than two temperature-changing blanket module units are sequentially foldable and connected .
7. The medical solid-state temperature-changing blanket according to claim 6, wherein the adjacent temperature-changing blanket module units are foldably connected through installation hinges.
8. The medical solid-state temperature-changing blanket according to claim 6, wherein handles are provided on both sides of the temperature-changing blanket module unit.

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