Low-temperature-difference medical heating blanket

Abstract

The utility model relates to a medical warming blanket with low temperature difference, which comprises a blanket body (10), the blanket body (10) comprises a first outer surface layer (101), a second outer surface layer (102), a heating layer (100) and a heat conducting layer (104), the heating layer (100) and the heat conducting layer (104) are arranged between the first outer surface layer (101) and the second outer surface layer (102) and are distributed along the thickness direction of the blanket body; the heating layer (100) is composed of at least three independent heating areas, and each heating area is provided with an independent heating source. The heat conduction layer (104) is used for transmitting heat generated by the heating layer (100) in the thickness direction of the blanket body (10). According to the low-temperature-difference medical heating blanket, the heating uniformity of the blanket body can be improved, and the temperature difference on the surface of the blanket body is reduced. The device is simple in structure, high in practicability and good in economical efficiency.

Description

Technical Field

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

[0002] When a surgical patient undergoes surgery in the operating room environment, due to the influence of multiple factors such as the operating room environment, anesthesia, and infusion, the body temperature changes greatly. Especially for major surgeries, elderly or pediatric surgical patients, hypothermia is likely to occur. Hypothermia during surgery in patients is likely to cause complications, including shivering, arrhythmia, cardiovascular accidents, abnormal coagulation function, immunosuppression and other abnormal complications, increasing the risk during the perioperative period.

[0003] To avoid hypothermia in patients during surgery, an electric warming blanket or an inflatable warming blanket is usually used to protect the patient's body temperature. Among them, the surface of the blanket body of the inflatable warming blanket is provided with air holes, and the hot air flows out of the holes and blows towards the human body. However, since the air inlet of the inflatable warming blanket is arranged at one end of the blanket body, when inflating, the air flow flows through the heating source in the blanket body from the air inlet and then flows out from the air holes evenly distributed on the surface of the blanket body. Such a setting method makes the temperature difference between the hot air flowing out of the air holes close to the air inlet and the hot air flowing out of the air holes far from the air inlet relatively large (at least 10 °C different) during actual use, and at the same time, the air flow blown out from the air holes will disrupt the laminar flow in the operating room; in the electric warming blanket, due to the large distribution range of the metal heating wires, there is an attenuation phenomenon in heat transfer, resulting in differences in the heat transferred to the surface of the blanket body at different positions, thus resulting in a certain temperature difference on the surface of the blanket body. Content of the Utility Model

[0004] Based on this, the purpose of the utility model is to provide a medical warming blanket with a small temperature difference, which can improve the uniformity of the blanket body in heating up and reduce the temperature difference on the surface of the blanket body.

[0005] A medical warming blanket with a small temperature difference includes a blanket body, the blanket body includes a first outer layer and a second outer layer, and a heating layer and a heat conduction layer distributed along the thickness direction of the blanket body arranged between the first outer layer and the second outer layer; the heating layer is composed of at least three independent heating zones, and each heating zone is respectively provided with an independent heating source; the heat conduction layer is used to transfer the heat generated by the heating layer along the thickness direction of the blanket body.

[0006] The low-temperature-difference medical warming blanket described in the present utility model is provided with a heating layer composed of at least three heating zones and independent heat sources corresponding to the heating zones one by one in the blanket body, reducing the heat generation area of each heat source to increase the heat transfer speed along the extending direction of the blanket body. At the same time, a heat conduction layer is provided in the heating layer along the thickness direction of the blanket body to quickly transfer the heat generated by the heating layer along the thickness direction of the blanket body, so as to increase the heat transfer speed along the thickness direction of the blanket body, thereby improving the temperature rise uniformity of the blanket body and reducing the temperature difference on the surface of the blanket body.

[0007] Further, the areas of the heating zones are the same.

[0008] Further, the heat source is carbon fiber or metal heating wire.

[0009] Further, the material of the heat conduction layer is aluminum foil cloth.

[0010] Further, the blanket body further includes a first heat insulation layer and a second heat insulation layer respectively arranged on both sides of the heating layer along the thickness direction and in contact with the heating layer, wherein the first heat insulation layer is located between the heating layer and the heat conduction layer.

[0011] Further, the materials of the first heat insulation layer and the second heat insulation layer are both needle-punched cotton.

[0012] Further, the first outer layer and the second outer layer both include a waterproof layer close to the heating layer and a contact layer located on the outer side of the waterproof layer along the thickness direction.

[0013] Further, the material of the contact layer in the first outer layer and the contact layer in the second outer layer is PU, and the material of the waterproof layer in the first outer layer and the waterproof layer in the second outer layer is TPU.

[0014] Further, the low-temperature-difference medical warming blanket further includes a control device, and the control device includes a device body and a blanket temperature sensor arranged in the first heat insulation layer and close to the position of the heat conduction layer; the blanket temperature sensors correspond to the heating zones one by one; the device body is electrically connected to each blanket temperature sensor and the heat sources in each heating zone respectively, and is used to control the heating power of the heat sources in each heating zone according to the temperature monitored by the blanket temperature sensors.

[0015] Further, the control device further includes a body temperature sensor electrically connected to the device body, which is used to monitor the body temperature of the patient and display the measured body temperature of the patient through the device body.

[0016] For better understanding and implementation, the present utility model will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0017] Figure 1 Schematic diagram of the structure of the blanket body in an embodiment of the low-temperature-difference medical warming blanket of the present invention;

[0018] Figure 2 Schematic diagram of the structure of the blanket body and the control device in an embodiment of the low-temperature-difference medical warming blanket of the present invention;

[0019] Figure 3 Schematic diagram of the industrial control process of the device body in the blanket body in an embodiment of the low-temperature-difference medical warming blanket of the present invention;

[0020] Reference numerals:

[0021] 10. Blanket body; 100. Heating layer; 1001. First heating area; 1002. Second heating area; 1003. Third heating area; 101. First outer surface layer; 102. Second outer surface layer; 104. Heat conduction layer; 105. First heat insulation layer; 106. Second heat insulation layer;

[0022] 20. Control device; 200. Device body; 2000. Main control module; 2002. Blanket temperature monitoring module; 2004. Display module; 2006. Body temperature monitoring module; 2008. Alarm module; 201. Blanket temperature sensor; 202. Body temperature sensor; 2014. Display screen. Detailed implementation manners

[0023] It should be clear that the described embodiments are only some embodiments of the embodiments of the present application, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the embodiments of the present application without creative efforts belong to the scope protected by the embodiments of the present application.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" or "fixedly connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0026] When performing surgery on a patient, in order to avoid complications caused by a decrease in the patient's body temperature during the operation, an inflatable low-temperature-difference medical warming blanket or an electric heating blanket is usually used to protect the patient's body temperature. The surface of the blanket body of the traditional inflatable low-temperature-difference medical warming blanket is provided with air holes, and hot air flows out from the air holes and blows towards the human body. However, due to the different distances between the air holes and the inflation port, there is a large temperature difference in the hot air flowing out from different air holes. The traditional electric heating blanket heats the entire blanket body through an electric metal heating wire. However, due to the wide distribution area of the metal heating wire in the blanket body, there is a phenomenon of heat transfer attenuation, resulting in different amounts of heat transferred to the surface of the blanket body, and thus there is also a certain temperature difference on the surface of the blanket body.

[0027] Based on this, an embodiment of the present utility model provides a low-temperature-difference medical warming blanket, which can improve the uniformity of the temperature rise on the surface of the blanket body and reduce the temperature difference.

[0028] Figure 1 Shows the specific structure of an embodiment of the low-temperature-difference medical warming blanket of the present invention. As Figure 1 shown, the low-temperature-difference medical warming blanket includes a blanket body 10, and the blanket body 10 specifically includes a first outer layer 101 and a second outer layer 102, as well as a heating layer 100 and a heat-conducting layer 104 disposed between the first outer layer 101 and the second outer layer 102 and distributed along the thickness direction of the blanket body 10.

[0029] Specifically, the heating layer 100 is divided into three heating zones, namely a first heating zone 1001, a second heating zone 1002, and a third heating zone 1003. Each heating zone is provided with an independent heat source, and the heat source is carbon fiber or a metal heating wire, and generates heat by connecting to an external power supply. The heat-conducting layer 104 is specifically an aluminum foil cloth, which is located between the heating layer 100 and the first outer layer 101. The first outer layer 101 includes a first contact layer, and the first contact layer is specifically made of PU (polyurethane material). The PU texture is soft, breathable and waterproof, which can not only transfer heat from the inside to the patient's body surface, but also prevent the water vapor generated by the evaporation of the patient's body surface from penetrating into the inside of the blanket body 10. Moreover, the PU material is easy to wipe and clean. Similarly, the second outer layer 102 also includes a second contact layer, and the material of the second contact layer is also PU like the first contact layer. In this way, when the blanket body 10 is covered on the patient, it prevents the water vapor in the air from penetrating into the inside of the blanket body 10 from the second outer layer 102.

[0030] During use, cover the blanket body 10 on the patient, so that the first contact layer of the first outer surface layer 101 contacts the patient. By arranging a plurality of independent heat sources in the heating layer 100 to generate heat in zones, the heat transfer speed is increased, and the temperature difference along the extension direction of the blanket body 10 is reduced; moreover, the heat generated by the heat source is quickly transferred to the first outer surface layer 101 of the blanket body 10 along the thickness direction of the blanket body 10 through the heat conduction layer 104, reducing the temperature difference along the thickness direction of the blanket body 10, realizing uniform and rapid heating of the blanket body to stabilize the patient's body temperature. Here, only one heat conduction layer 104 is arranged in the blanket body 10. In this way, it can be ensured that the heat generated by the heating layer 100 is concentrated and transferred to the side where the heat conduction layer 104 is located, and heat loss from the other side is avoided as much as possible.

[0031] In practical applications, the areas of the first heating zone 1001, the second heating zone 1002, and the third heating zone 1003 are the same. In this way, it can be ensured that the heating efficiencies of each heating zone are consistent, reducing the temperature difference. Of course, four, five or even more heating zones can also be set according to needs, but the more heating zones there are, the higher the manufacturing cost will be.

[0032] Furthermore, as Figure 1 shown, the blanket body 10 further includes a first heat preservation layer 105 and a second heat preservation layer 106. The first heat preservation layer 105 and the second heat preservation layer 106 are respectively arranged on both sides of the heating layer 100 along the thickness direction and are both in contact with the heating layer 100. Among them, the first heat preservation layer 105 is located between the heating layer 100 and the heat conduction layer 104. The materials of the first heat preservation layer 105 and the second heat preservation layer 106 are needle-punched cotton. By arranging the first heat preservation layer 105 and the second heat preservation layer 106 in the heating layer 100, it can buffer the heat generated by the heating layer 100, avoid rapid heat dissipation, and at the same time enable the heat to be evenly diffused to the heat conduction layer 104.

[0033] Furthermore, to further enhance the waterproof effect, the first outer surface layer 101 further includes a first waterproof layer arranged inside the first contact layer, and the first waterproof layer is located between the first heat preservation layer 105 and the first contact layer. The material of the first waterproof layer is specifically TPU (thermoplastic polyurethane elastomer rubber). Similarly, the second outer surface layer 102 also includes a second waterproof layer arranged inside the second contact layer, and the second waterproof layer is located between the second heat preservation layer 106 and the second contact layer.

[0034] Furthermore, as Figure 2As shown in the figure, in order to achieve automatic control of the heating of the blanket body, the above-mentioned low-temperature difference medical warming blanket further includes a control device 20. Specifically, the control device 20 includes a device body 200 and a blanket temperature sensor 201. The blanket temperature sensor 201 is arranged in the first heat preservation layer 105 and corresponds to the heating areas one by one. The device body 200 is electrically connected to each blanket temperature sensor 201 and the heat sources in each heating area respectively. The device body 200 specifically includes a main control module 2000 and a blanket temperature monitoring module 2002. Among them, the main control module 2000 is electrically connected to the blanket temperature monitoring module 2002 and the heat sources in each heating area respectively, and the blanket temperature monitoring module 2002 is electrically connected to each blanket temperature sensor 201. Preferably, each blanket temperature sensor 201 is arranged at a position in the first heat preservation layer 105 closer to the heat conduction layer 104. In this way, the temperature of the blanket body 10 in contact with the patient's body surface can be accurately reflected.

[0035] As Figure 3 shown in the figure, before use, the required temperature, temperature upper limit and temperature lower limit are set through the main control module 2000. The blanket temperature sensor 201 monitors the temperature of the corresponding heating area. When the temperature of the heating area exceeds the set required temperature, the blanket temperature monitoring module 2002 converts the blanket temperature analog signal collected by the blanket temperature sensor 201 into a blanket temperature digital signal and transmits it to the main control module 2000. The main control module 2000 controls the heat source in the corresponding heating area to reduce the heating power, so that the temperature of the heating area drops back to the set temperature; on the contrary, when the temperature of the heating area is lower than the required temperature, the main control module 2000 controls the corresponding heat source to increase the heating power, so that the temperature of the heating area rises back to the set temperature.

[0036] Furthermore, the device body 200 further includes a display screen 2014 and a display module 2004. The display module 2004 is electrically connected to the blanket temperature monitoring module 2002 and the display screen 2014 respectively. The display screen 2014 is located on the outer surface of the device body 200. The blanket temperature digital signals of each heating area received by the blanket temperature monitoring module 2002 are displayed on the display screen 2014 through the display module 2004 to observe the temperature changes of each heating area in real time.

[0037] Furthermore, the control device 20 further includes a body temperature sensor 202. Correspondingly, a body temperature monitoring module 2006 is further included in the device body 200. The body temperature monitoring module 2006 is electrically connected to the body temperature sensor 202 and the display screen 2014 respectively. When in use, the body temperature sensor 202 contacts with the natural cavity of the patient (such as oral cavity, nasal cavity or anus, etc.). The body temperature monitoring module 2006 converts the body surface temperature analog signal of the patient collected by the body temperature sensor 202 into a body temperature digital signal and displays it on the display 2014 through the display module 2004.

[0038] Furthermore, an alarm module 2008 is also included in the device body 200. The alarm module 2008 is electrically connected to the main control module 2000. When the blanket temperature sensor 201 or the body temperature sensor 202 detects that the temperature of the blanket 10 or the patient's body temperature is lower than the set upper temperature limit or lower temperature limit, the main control module 2000 activates the alarm module 2008. The alarm module 2008 can be a buzzer, an alarm light, or other equivalent devices that can play a prompting role. An alarm sound is emitted or the alarm light flashes through the alarm module 2008 to prompt the user to pay attention to the patient's body temperature situation.

[0039] Compared with the prior art, the low-temperature-difference medical warming blanket of the present utility model improves the heat transfer speed along the extending direction of the blanket body by setting a heating layer composed of at least three heating zones and independent heat sources corresponding to the heating zones one by one in the blanket body to reduce the heat generation area of each heat source. At the same time, by arranging a heat conduction layer along the thickness direction of the blanket body in the heating layer, the heat generated by the heating layer is quickly transferred along the thickness direction of the blanket body to improve the heat transfer speed along the thickness direction of the blanket body, thereby improving the uniformity of the blanket body temperature rise and reducing the temperature difference on the surface of the blanket body. The structure of the present utility model is simple, has strong practicability, and good economy.

[0040] The above-described embodiments only represent several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting 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 improvements.

Claims

1. A low temperature differential medical warming blanket, comprising a blanket body (10), characterized in that: The blanket body (10) comprises a first outer surface layer (101) and a second outer surface layer (102), and a heat-generating layer (100) and a heat-conducting layer (104) arranged between the first outer surface layer (101) and the second outer surface layer (102) and distributed along the thickness direction of the blanket body; The heating layer (100) is composed of at least three independent heating zones, each of which is provided with an independent heating source; The heat-conducting layer (104) is used to transfer the heat generated by the heat-generating layer (100) along the thickness direction of the blanket body (10).

2. The low temperature difference medical warming blanket according to claim 1, characterized in that: The areas of the heating zones are the same.

3. The low temperature difference medical warming blanket according to claim 1, characterized in that: The heat source is carbon fiber or metal heating wire.

4. The low temperature difference medical warming blanket according to claim 1, characterized in that: The material of the heat-conducting layer (104) is aluminum foil cloth.

5. The low temperature difference medical warming blanket according to any one of claims 1 to 4, characterized in that: The blanket body (10) further comprises a first thermal insulation layer (105) and a second thermal insulation layer (106) respectively arranged on both sides of the heating layer (100) in the thickness direction and in contact with the heating layer (100), wherein the first thermal insulation layer (105) is located between the heating layer (100) and the heat conducting layer (104).

6. The low temperature difference medical warming blanket according to claim 5, characterized in that: The first thermal insulation layer (105) and the second thermal insulation layer (106) are both made of needle-punched cotton.

7. The low temperature difference medical warming blanket according to claim 5, characterized in that: The first outer surface layer (101) and the second outer surface layer (102) both include a waterproof layer close to the heat-generating layer (100), and a contact layer located outside the waterproof layer in the thickness direction.

8. The low temperature difference medical warming blanket according to claim 5, characterized in that: The contact layer in the first outer layer (101) and the contact layer in the second outer layer (102) are made of PU, and the waterproof layer in the first outer layer (101) and the waterproof layer in the second outer layer (102) are made of TPU.

9. The low temperature difference medical warming blanket according to claim 5, characterized in that: The invention also comprises a control device (20), wherein the control device (20) comprises a device body (200) and a blanket temperature sensor (201) arranged in the first thermal insulation layer (105) and close to the thermal conductive layer (104); The blanket temperature sensors (201) correspond to the heating zones one by one; The device body (200) is electrically connected to each blanket temperature sensor (201) and a heat source in each heating zone, respectively, and is used to control the heating power of the heat source in each heating zone according to the temperature monitored by the blanket temperature sensor (201).

10. The low temperature difference medical warming blanket according to claim 9, characterized in that: The control device (20) also includes a body temperature sensor (202) electrically connected to the device body (200), which is used to monitor the patient's body temperature and display the measured patient's body temperature through the device body (200).

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