Medical heating blanket

Abstract

The utility model relates to a medical warming blanket. The medical heating blanket comprises a host, a blanket body, a body temperature sensor, a blanket body temperature sensor and an overheating protection sensor, the host comprises a controller; the body temperature sensor is electrically connected with the controller; the blanket body comprises an upper cloth layer, a lower cloth layer, a middle heating layer, and an upper heat preservation layer and a lower heat preservation layer which are respectively clamped between the upper cloth layer and the lower cloth layer and the heating layer; the heating layer is electrically connected with the controller; the blanket body temperature sensor and the overheating protection sensor are arranged in the blanket body and electrically connected with the controller. The medical heating blanket has the advantages that the thermal reaction time is short, the temperature measurement precision is high, the temperature of the blanket body can be accurately collected in real time, and therefore heat preservation protection measures can be taken in time.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a medical warming blanket. Background Art

[0002] During surgery, the patient's body temperature is a basic and very important vital sign item during the surgical period. Since the national anesthesia medical quality control standard was promulgated in 2015, the body temperature during surgery is one of the 17 anesthesia quality control indicators, and the low body temperature rate (≤35.5°C) of patients during surgery is an indicator that third-level hospitals must report. Due to the influence of multiple factors such as the operating room environment, anesthesia, and infusion, the body temperature of surgical patients changes greatly. Especially for major surgeries, elderly or pediatric surgical patients, hypothermia is likely to occur, and intraoperative complications are likely to be caused by hypothermia, including shivering, arrhythmia, cardiovascular accidents, abnormal coagulation function, immune suppression and other abnormal complications, increasing the risk during the perioperative period. Therefore, perioperative body temperature protection and monitoring are very important, and thus a medical warming blanket is usually used for surgical patients during surgery, where the medical warming blanket can be laid under the patient or covered on the patient.

[0003] At the same time, during the body temperature protection process, since the patient is in a state of anesthesia throughout the process and cannot perceive the temperature, in order to ensure the safety of using the device, medical warming blankets are equipped with overheat protection to prevent scalding accidents caused by overheating to the human body. Existing overheat protection for medical warming blankets all uses mechanical temperature control switches, and the mechanical temperature control switches have the following deficiencies: the temperature deviation when the temperature control switch disconnects (generally greater than ±3°C), and the temperature difference before and after disconnection is at least 6 degrees different; the mechanical temperature control switch uses physical principles, it cannot be miniaturized, the temperature perception is not sensitive, and there is a certain lag.

[0004] The existing overheat protection for medical warming blankets has a large temperature deviation when disconnecting and a lag in response time. When a medical warming blanket fails, the time from the appearance of high temperature to its stop working is relatively long. During this process, because the patient is in a state of anesthesia, unconscious and has no self-help ability. Once overheating occurs, the patient will be injured to varying degrees. Content of the Utility Model

[0005] Based on this, the purpose of the present utility model is to provide a medical warming blanket.

[0006] A medical warming blanket includes a main unit, a blanket body, a body temperature sensor, a blanket body temperature sensor, and an overheat protection sensor; the main unit includes a controller; the body temperature sensor is electrically connected to the controller; the blanket body includes upper and lower layers of cloth, a middle heating layer, and upper and lower layers of heat insulation layers respectively sandwiched between the upper and lower layers of cloth and the heating layer; the heating layer is electrically connected to the controller; the blanket body temperature sensor and the overheat protection sensor are arranged in the blanket body and electrically connected to the controller.

[0007] For the medical warming blanket described in the present utility model, through a miniaturized overheat protection sensor, it has a fast thermal response time and high temperature measurement accuracy. It can collect the temperature of the blanket in real time and accurately, so as to take timely heat preservation and protection measures. It is heated by a separate heating layer to ensure the uniformity of heating. The miniaturized overheat protection sensors are respectively arranged between the heat preservation layer and the upper and lower layers of cloth, ensuring that the blanket does not deform and maintaining the uniformity of the blanket, without affecting the doctor's surgical operation.

[0008] Furthermore, the blanket is rectangular, and the upper and lower layers of cloth hermetically wrap the heating layer and the heat preservation layer. The blanket is rectangular, and its length and width can accommodate a human body.

[0009] Furthermore, the blanket temperature sensor and the overheat protection sensor are arranged between the upper layer of cloth and the heat preservation layer.

[0010] Furthermore, the blanket temperature sensor and the overheat protection sensor are arranged between the upper and lower heat preservation layers and each layer of cloth, and the blanket temperature sensor and the overheat protection sensor are respectively arranged on both the upper and lower sides of the blanket. The blanket temperature sensor and the overheat protection sensor are respectively arranged on both the upper and lower sides of the blanket, uniformly measuring the temperature of the blanket to ensure the accuracy of temperature measurement.

[0011] Furthermore, the blanket temperature sensors are evenly spaced on the same heat preservation layer. This ensures the accuracy of temperature measurement and prevents deviation.

[0012] Furthermore, the cloth is polyurethane or thermoplastic polyurethane composite cloth, the heating layer is a carbon fiber heating layer or a graphene heating layer, and the heat preservation layer is a needle punched cotton heat preservation layer. Among them, the needle punched cotton has a high density, a hard texture, and a low cost, and also has the functions of flame retardancy and heat insulation. It is heated by a separate layer of carbon fiber or graphene heating layer to ensure the uniformity of heating.

[0013] Furthermore, the overheat protection sensor includes an NTC thermistor. The NTC thermistor is miniaturized, has the characteristic that its resistance decreases with the increase of temperature, has a fast thermal response time, and high temperature measurement accuracy.

[0014] Furthermore, the main body also includes a housing and a temperature display screen. The controller is provided with a control panel, and the control panel and the temperature display screen are arranged on the outer wall of the housing. The control panel is used to set the operating parameters of the main body; the temperature display screen is used to display the blanket temperature and the human body temperature; the controller is arranged inside the housing, and the controller is electrically connected to the temperature display screen.

[0015] Further, the controller includes a body temperature measurement module, a blanket temperature measurement module, an overheat protection module, and a control system module. The body temperature measurement module is electrically connected to the body temperature sensor, the blanket temperature measurement module is electrically connected to the blanket temperature sensor, and the overheat protection module is electrically connected to the overheat protection sensor. The control system module receives the blanket temperature signal transmitted by the blanket temperature measurement module, and the control system module is used to regulate the temperature of the blanket and alarm for high temperature.

[0016] Further, the temperature display screen includes a display driving system. The body temperature measurement module and the blanket temperature measurement module transmit temperature signals to the display driving system, and the display driving system processes the signals and displays the body temperature and the blanket temperature on the temperature display screen.

[0017] For better understanding and implementation, the present utility model will be described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a medical warming blanket in the present utility model;

[0019] Figure 2 It is a schematic structural diagram of the blanket body in the present utility model;

[0020] Figure 3 It is a schematic diagram of the connection relationship of the medical warming blanket in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Please refer to Figures 1 to 3 , the medical warming blanket of the present utility model includes a main unit 1, a blanket body 2, a body temperature sensor 3, a blanket body temperature sensor 4, and an overheat protection sensor 5. The body temperature sensor 3 is electrically connected to the main unit 1, and the main unit 1 is connected to the warming blanket 2 through a connecting wire 100.

[0022] The host 1 includes a housing 10, a controller 12, and a temperature display screen 11. The controller 12 is provided with a control panel, and the control panel of the controller 12 and the temperature display screen 11 are arranged on the outer wall of the housing 10. The controller 12 is used to set the operating parameters of the host 1 through its control panel; the temperature display screen 11 is used to display the temperature of the blanket body 2 and the human body temperature detected by the body temperature sensor 3. The controller 12 is arranged inside the housing 10 and is electrically connected to the temperature display screen 11. The controller 12 includes a body temperature measurement module 121, a blanket temperature measurement module 122, an overheat protection module 123, and a control system module 124. The body temperature measurement module 121 is electrically connected to the body temperature sensor 3, the blanket temperature measurement module 122 is electrically connected to the blanket body temperature sensor 4, and the overheat protection module 123 is respectively electrically connected to the overheat protection sensor 5 and the blanket body 2. When the overheat protection sensor 5 transmits a high-temperature signal to the overheat protection module 123, the overheat protection module 123 starts open-circuit protection and stops supplying power to the blanket body 2; the control system module 124 receives the blanket temperature signal transmitted by the blanket temperature measurement module 122, and the control system module 124 regulates the temperature of the blanket body 2 and alarms for high temperature. The temperature display screen 11 is provided with a display driving system. The body temperature measurement module 121 and the blanket temperature measurement module 122 transmit temperature signals to the display driving system, and the display driving system processes the signals and then displays the body temperature and the blanket body temperature on the temperature display screen 11. Among them, the body temperature measurement module 121 and the blanket temperature measurement module 122 can adopt temperature measurement devices in the prior art, the overheat protection module 123 can adopt an overheat protection device in the prior art, and the control system module 124 can adopt a controller in the prior art for controlling the overheat protection device according to the measurement results of the temperature measurement device.

[0023] The blanket body 2 includes two upper and lower layers of cloth 22, a heating layer 21 in the middle, and heat insulation layers 23 respectively sandwiched between each layer of cloth 22 and the heating layer 21. The heating layer 21 is laid flat according to the shape of the blanket body 2, the heat insulation layers 23 evenly cover the upper and lower sides of the heating layer 21, and the two upper and lower layers of cloth 22 hermetically wrap the middle heating layer 21 and the two heat insulation layers 23 therein. In this embodiment, the blanket body 2 is rectangular, and its length and width can accommodate a human body. The heating layer 21 is electrically connected to the controller 12, which facilitates the controller 12 to adjust the operating parameters of the heating layer 21. Preferably, the cloth 22 is a polyurethane or thermoplastic polyurethane composite cloth, the heating layer 21 is a carbon fiber heating layer or a graphene heating layer, and a whole-layer heating layer 21 is adopted to achieve uniform heating. In this embodiment, the heat insulation layer 23 is a needle-punched cotton heat insulation layer.

[0024] A temperature sensor 4 of the blanket body 2 and the overheat protection sensor 5 are provided between the upper heat insulation layer 23 and the cloth 22. The blanket body 2 is placed under the patient. The temperature sensor 4 of the blanket body 2 and the overheat protection sensor 5 on the upper layer are closer to the human body, and the detected temperature is more accurate and reliable.

[0025] Further, the temperature sensor 4 of the blanket body 2 and the overheat protection sensor 5 are respectively provided between the upper and lower heat insulation layers 23 and each layer of cloth 22. The temperature sensor 4 of the blanket body 2 and the overheat protection sensor 5 are respectively arranged on both the upper and lower sides of the blanket body 2. Therefore, no matter whether the patient is above or below the blanket body 2, the temperature of the blanket body 2 can be evenly measured, ensuring the accuracy of the measured temperature and preventing deviation. Further, the number of the temperature sensor 4 of the blanket body and / or the overheat protection sensor 5 between each layer of heat insulation layer 23 and each layer of cloth 22 is more than two, and they are evenly arranged at intervals on the heat insulation layer 23. The temperature sensor 4 of the blanket body and the overheat protection sensor 5 are electrically connected to the controller 12, and are used to detect the temperature of the blanket body 2 and feedback the temperature signal to the controller 12; the overheat protection sensor 5 includes an NTC thermistor. While realizing miniaturization, the NTC thermistor also has the characteristic that its resistance value decreases with the increase of temperature, has a fast thermal response time and high temperature measurement accuracy. When overheating occurs, it can timely feedback the temperature to the host overheat protection module to make a protection action and stop powering on the blanket body 2.

[0026] The body temperature sensor 3 is arranged outside the blanket body 2 and is electrically connected to the controller 12.

[0027] During use, the body temperature sensor 3 and the blanket body 2 are respectively connected to the host 1. The blanket body 2 is placed under the patient or covered on the patient, and the body temperature sensor 3 is connected to the natural body cavity of the human body.

[0028] The analog signal of the human body temperature collected by the body temperature sensor 3 is transmitted to the body temperature measurement module 121. The body temperature measurement module 121 amplifies and converts the analog signal of the human body temperature through A / D recognition and conversion to obtain a temperature digital signal, and transmits it to the display driving system. The display driving system processes the temperature digital signal and displays it on the temperature display screen 11.

[0029] The analog signal of the blanket temperature collected by the blanket body temperature sensor 4 is transmitted to the blanket temperature measurement module 122. The blanket temperature measurement module 122 amplifies and converts the analog signal of the blanket temperature through A / D recognition and conversion to obtain a temperature digital signal, and then transmits it to the display driving system and the control system module 124 respectively. The display driving system processes the temperature digital signal and displays it on the temperature display screen 11. At the same time, the control system module 124 recognizes and processes the temperature digital signal. When the temperature of the blanket body 2 is higher than the set temperature of the blanket body 2, the control system of the host 1 automatically cuts off the output to the blanket body 2 and stops heating; when the temperature of the blanket body 2 approaches the set temperature of the blanket body 2, the control system of the host 1 automatically reduces the heating power of the blanket body 2 to keep the blanket body 2 at the set temperature; when the temperature of the blanket body 2 is lower than the set temperature of the blanket body 2, the control system of the host 1 automatically adjusts the blanket body 2 to full-power heating; when the body temperature or the blanket temperature exceeds the set upper and lower limit temperatures respectively, the control system of the host 1 emits an alarm sound and the alarm light flashes.

[0030] After receiving the temperature signal of the blanket body 2 monitored by the overheat protection sensor 5, the overheat protection module 123 recognizes and processes it. When the temperature control of the blanket body 2 fails and the temperature of the blanket body 2 continues to rise and reaches its overheat protection temperature, the overheat protection module 123 activates open-circuit protection and stops supplying power to the blanket body 2.

[0031] When the body temperature of the patient changes, medical staff can also manually adjust the heating temperature of the blanket body 2 according to the patient's body temperature through the control panel of the controller 12.

[0032] A medical warming blanket of the present utility model uses a miniaturized overheat protection sensor 5 to reduce the heat reaction time and has high temperature measurement accuracy. It can collect the temperature of the blanket body 2 in real time and accurately, so as to take timely heat preservation and protection measures. Moreover, the blanket body 2 of the medical warming blanket includes two upper and lower layers of cloth 22, a heating layer 21 in the middle, and heat preservation layers 23 respectively sandwiched between each layer of cloth 22 and the heating layer 21. The heat preservation layer 23 is a needle-punched cotton heat preservation layer. The needle-punched cotton has a high density, a hard texture, and a low cost, and also has the functions of flame retardancy, heat insulation and heat preservation. It is heated by a single heating layer 21 to ensure uniform heating. The miniaturized overheat protection sensor is arranged between the heat preservation layer 23 and the cloth 22, and the blanket body 2 does not deform, ensuring the uniformity of the blanket body 2 and not affecting the doctor's surgical operation.

[0033] The above-described embodiments merely represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and the present utility model also intends to include these modifications and variations.

Claims

1. A medical warming blanket, characterized in that: The invention comprises a host, a blanket, a body temperature sensor, a blanket body temperature sensor and an overheat protection sensor; the host comprises a controller, a shell and a temperature display screen, the controller is provided with a control panel, the control panel and the temperature display screen are arranged on the outer wall of the shell, the control panel is used to set the operating parameters of the host; the temperature display screen is used to display the blanket body temperature and the human body temperature; the controller is arranged in the shell, the controller is electrically connected to the temperature display screen; the controller comprises a body temperature measurement module, a blanket temperature measurement module, an overheat protection module and a control system module, the body temperature measurement module is electrically connected to the body temperature sensor, The blanket temperature measurement module is electrically connected to the blanket body temperature sensor, the overheat protection module is electrically connected to the overheat protection sensor, the control system module receives the blanket temperature signal transmitted by the blanket temperature measurement module, and the control system module is used to regulate the temperature of the blanket body and alarm for high temperature; the blanket body includes upper and lower layers of cloth, a heating layer in the middle, and upper and lower insulation layers sandwiched between the upper and lower layers of cloth and the heating layer, respectively, and the heating layer is electrically connected to the controller; the blanket body temperature sensor and the overheat protection sensor are arranged between the upper layer of cloth and the insulation layer; the overheat protection sensor includes an NTC thermistor.

2. The medical warming blanket according to claim 1, characterized in that: The blanket body is rectangular, and the upper and lower layers of cloth seal and wrap the heating layer and the heat-insulating layer.

3. The medical warming blanket according to claim 2, characterized in that: The blanket temperature sensor and the overheat protection sensor are arranged between the upper and lower insulation layers and each layer of cloth, and the blanket temperature sensor and the overheat protection sensor are respectively arranged on the upper and lower sides of the blanket body.

4. The medical warming blanket according to claim 3, characterized in that: The blanket temperature sensors are evenly spaced and arranged on the same insulation layer.

5. The medical warming blanket according to claim 4, characterized in that: The cloth is polyurethane or thermoplastic polyurethane composite cloth, the heating layer is a carbon fiber heating layer or a graphene heating layer, and the thermal insulation layer is a needle-punched cotton thermal insulation layer.

6. The medical warming blanket according to claim 5, characterized in that: The temperature display screen includes a display driving system. The body temperature measuring module and the blanket temperature measuring module transmit temperature signals to the display driving system. The display driving system processes the signals and displays the body temperature and blanket temperature on the temperature display screen.

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