Cooling bag with uniform cooling effect

Abstract

The application provides a cold compress bag with uniform cooling effect, which places cold storage agent in the inner cavities of a first water bag and a second water bag. When used, the cooling part is cooled through the side of the water-proof layer. The cross sections of the first water bag and the second water bag are both in the shape of narrow at both ends and wide in the middle, and the second water bag is arranged below the narrow part of the first water bag. No matter whether the cold storage agent is in the form of gel or liquid, the cold storage agent is loaded separately by the first water bag and the second water bag. Even if the cold storage agent is affected by gravity and flows, the cold storage agent in the second water bag can fill the space formed between the first water bag and the water-proof layer, and the uniformity of the cold compress bag in cooling is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of cold compress bag technology, specifically a cold compress bag with uniform cooling effect. Background Technology

[0002] Cold compresses, typically long strips or pillow-shaped ice packs, are common physical cooling products. They usually contain a cold-storing agent inside, often a saline solution composed of sodium carbonate and ammonium salts, or a polymer gel containing sodium polyacrylate. When used, the cold compress or ice pack is placed on the area requiring cooling; the cold-storing agent absorbs heat, achieving physical cooling. In clinical applications of dynamic infrared thermal imaging, before certain experiments, cold compresses or ice packs are used to cool the arms or legs of participants. Then, thermal infrared equipment is used to observe the cooled areas in real time, monitoring the dynamic warming process of the condensed area.

[0003] Currently, the laboratory uses common disposable pillow-shaped ice packs. However, due to their shape, these ice packs cannot fit snugly against the area being cooled, resulting in uneven cooling of the cooled area. Figure 1 As shown, this is an infrared image of the area cooled by a pillow-shaped ice pack. It can be clearly seen that a localized area in the center of the cold compress zone appears yellowish-green, rather than a uniform purple. Uneven cooling in the examined area affects the accuracy of the examination. Longer strip-shaped cold compresses are also available on the market, but to reduce the influence of gravity on liquid flow, these longer cold compresses use parallel partitions inside to divide the internal coolant into strips. The image clearly shows that the middle sections connecting the strips have less coolant, resulting in poorer cooling and failing to meet the experimental requirement for uniform cooling. Summary of the Invention

[0004] To address the issue that existing commercially available cold compress bags cannot meet the requirements for uniform cooling in experiments, this invention provides a cold compress bag with uniform cooling effect, which can improve the uniformity of cooling effect.

[0005] The structure of this utility model is as follows: a cooling compress bag with uniform cooling effect, comprising: a bag body and a binding structure, the binding structure being located on both sides of the bag body, characterized in that: The bag body includes: a water-proof layer, a connector, a first water bag and a second water bag; a cold storage agent is placed in the inner cavity of the first water bag and the second water bag; The waterproof layer is a rectangular sheet structure, and its length and width are set according to experimental requirements. The first water bag is elongated in length and has a centrally symmetrical cross-section that is narrow at both ends and wide in the middle in width. The first water bags are connected end to end in width to form the first layer of bags, and the overall length and width of the first layer of bags are the same as the waterproof layer. The inner cavities of adjacent first water bags are not interconnected. The central portion of the sidewall on the same side of all the first water bags is fixedly connected to the waterproof layer; The four sides of the first layer of the bag are respectively connected to the waterproof layer through the connector to form a closed connection; The space between the sidewall of the first water bag and the waterproof layer, and the space formed between the first water bag, the waterproof layer and the connector, constitute the second water bag; all the second water bags constitute the second bag body; The binding structure is connected to the connector head in the longitudinal direction.

[0006] Its further features are: The thickness TH of the edge of the connector that connects to the first layer of the bag body is: TH≥th2+th1 / 2; Where th1 is the thickness of the first water bag after it is filled with liquid, and th2 is the thickness of the waterproof layer; The inner cavities of the second water bags are sealed to each other; It also includes: insert structure and shaped metal sheet; The insert structure is elongated, with a length less than or equal to the width of the first bag body. The slot is located on the side wall of the connector head away from the waterproof layer. The shaped metal sheet is movably inserted into the insert structure. The insertion structure is a slot or a bag-shaped structure; The cross-sectional shape of the first water bag includes: a centrally symmetrical rhombus or a spindle shape; It also includes: a skin-friendly layer, which is based on a cooling fabric and is disposed on the side of the waterproof layer away from the first and second bag bodies; the skin-friendly layer is a rectangular sheet structure, the size and shape of which are adapted to the waterproof layer.

[0007] This application provides a cooling compress bag with uniform cooling effect, in which a cold storage agent is placed in the inner cavity of a first water bag and a second water bag. In use, the area to be cooled is cooled through the side containing the water-resistant layer. Both the first and second water bags have a cross-section that is narrow at both ends and wide in the middle. The second water bag is positioned below the narrower part of the first water bag. Regardless of whether the cold storage agent is gel-like or liquid, the cold storage agent is separated and loaded by the first and second water bags. Even if the cold storage agent flows due to gravity, the cold storage agent in the second water bag can fill the space between the first water bag and the water-resistant layer, effectively improving the uniformity of cooling. Attached Figure Description

[0008] Figure 1 Infrared imaging of the area cooled by an existing ice pack; Figure 2 This is a structural schematic diagram of the surface where the first water bag of the cold compress bag of this application is located; Figure 3 This is a structural schematic diagram of the surface where the waterproof layer of the cold compress bag of this application is located; Figure 4 for Figure 2 Example 1 of a bag structure viewed in the middle aa direction; Figure 5 for Figure 2 Example 2 of a bag structure viewed in the middle aa direction. Detailed Implementation

[0009] like Figures 2-5 As shown, this utility model includes a cooling pack with uniform cooling effect, comprising: a pack body 1 and a binding structure 5. The binding structure 5 is located on both sides of the pack body 1. The binding structure 5 in this application is based on existing technology, such as a rope structure, a buckle structure, or an elastic structure, etc., and the specific length is set according to actual needs. In this embodiment, the area to be cooled is mainly located on a cylindrical structure on the arm or thigh, so it is based on a flexible strip structure. Velcro 6 is set on the strip structure to fix the pack body 1 to the area to be cooled.

[0010] The bag body 1 includes: a water-resistant layer 2, a connector 3, a first water bag 11, and a second water bag 12; a coolant is placed in the inner cavity of the first water bag 11 and the second water bag 12. The water-resistant layer 2 is a rectangular sheet structure, and the length and width of the water-resistant layer 2 are set according to experimental requirements; in this embodiment, the size of the water-resistant layer 2 is set to 20cm*12cm.

[0011] The first water bag 11 is elongated in length, and the cross-section of the bag body in width direction is a centrally symmetrical structure that is narrow at both ends and wide in the middle; such as a centrally symmetrical rhombus or spindle shape. Figure 4 The first embodiment shown is a first water bag 11 with a horizontally rhomboid structure. Figure 5 In the second embodiment shown, the first water bag 11 has a spindle-shaped cross-section. For example... Figure 1 As shown, in this embodiment, the length direction is marked as L, and the horizontal direction is marked as W.

[0012] The first water bags 11 are connected end to end in the width direction to form a first layer of bags. The overall length and width of the first layer of bags are adapted to the water-proof layer 2. The inner cavities of adjacent first water bags 11 are not interconnected. The center of the sidewall on the same side of all first water bags 11 is fixedly connected to the water-proof layer 2. The four sides of the first layer of bags are respectively connected to the water-proof layer 2 through connectors 3 to form a closed connection. The space between the sidewall of the first water bag and the water-proof layer 2, and the space formed by the first water bag 11, the water-proof layer 2 and the connectors 3, constitute the second water bag 12. All second water bags 12 constitute the second layer of bags. The inner cavities of the second water bags 12 are sealed to each other. In this application, the cold storage agent is encapsulated in two layers of bags, and each layer of bags is further divided into smaller spaces, reducing the fluidity of the cold storage agent.

[0013] In this application, the binding structure 5 is connected to the connector 3 in the length direction. In specific use, the part to be cooled is placed horizontally in the experiment, and the bag 1 is fixed to the part to be cooled with the water-proof layer 2 facing downward by the binding structure 5. Even if the part to be cooled shakes during the process, the probability of liquid flow in the length direction of the bag 1 is low. When the part to be cooled is cylindrical, the probability of cold storage agent flow in the lateral direction of the bag 1 is high. In this application, the first water bag 11 is set as a centrally symmetrical structure with narrow ends and a wide middle. The second water bag 12 located between two adjacent first water bags is a left-right symmetrical structure in the width direction. This can effectively limit the lateral flow of cold storage agent in the inner cavity of the first water bag. At the same time, the second water bag 12 can fill the gap between the narrow part of the adjacent first water bag 11 and the water-proof layer 2, ensuring that the part to be cooled below the water-proof layer 2 can be cooled evenly.

[0014] To ensure that the bag body 1 does not deform due to the connection structure, in this application, a thicker connector 3 is used to form a second water bag 12 together with the first water bag 11 and the waterproof layer 2. The thickness TH of the edge of the connector 3 connecting to the first layer of the bag body is: TH≥th2+th1 / 2; Among them, such as Figure 5 As shown, th1 is the thickness of the first water bag 11 after it is filled with liquid, and th2 is the thickness of the water-proof layer 2.

[0015] By controlling the thickness of the connector 3, it is ensured that when the first water bag 11 and the second water bag 12 are filled with refrigerant, the connector 3 can keep the first water bag 11 and the water-proof layer 2 located at the edge in a horizontal state, thus avoiding the problem of the water-proof layer 2 warping or bending due to the narrowness of the connector causing the edge of the water bag to shrink.

[0016] In practical implementation, the waterproof layer 2, connector 3, and first water bag 11 in the bag body 1 of this application can be integrally formed, or they can be separate structures joined together. They are manufactured using commonly used medical materials such as PVC, PE composite plastics, rubber, or resin. Disinfection can be achieved by wiping with alcohol. The specific materials used can be selected based on cost.

[0017] To ensure that the cold compress remains flat during use, this application also provides an insert structure 7 and a shaping metal sheet (not marked in the figure) on the bag body.

[0018] The insert structure 7 is elongated, with a length less than or equal to the width of the first layer of the bag. The slot is located on the side wall of the connector 3 away from the waterproof layer 2. A shaped metal sheet is movably inserted into the insert structure 7. The insert structure 7 is either a slot or a bag-shaped structure with one open side. The metal sheet is made of thin aluminum or galvanized iron sheets, as is available in the prior art. During use, it is inserted into the insert structure 7, and the curvature of the metal sheet is adjusted according to the curvature of the area being cooled to ensure that the edges of the cooling bandage do not curl up, thus improving the uniformity of cooling. The insert structure 7 can be directly installed on the connector 3, or it can be molded from plastic and then glued to the connector 3.

[0019] To improve user comfort, such as Figure 4 As shown, this application also includes a skin-friendly layer 8, which is based on a cooling fabric and is disposed on the side of the waterproof layer 2 away from the first and second bag bodies 1. The skin-friendly layer 8 has a rectangular sheet structure, and its size and shape are adapted to the waterproof layer 2. In specific implementation, the skin-friendly layer 8 can be made of a soft and breathable material, such as non-woven fabric or some existing cooling fabrics. It is attached to the waterproof layer 2 by an adhesive method.

Claims

1. A cooling compress bag with uniform cooling effect, comprising: The bag body and the binding structure, with the binding structure on both sides of the bag body, are characterized by: The bag body includes: a water-proof layer, a connector, a first water bag and a second water bag; a cold storage agent is placed in the inner cavity of the first water bag and the second water bag; The waterproof layer is a rectangular sheet structure, and its length and width are set according to experimental requirements. The first water bag is elongated in length and has a centrally symmetrical cross-section that is narrow at both ends and wide in the middle in width. The first water bags are connected end to end in width to form the first layer of bags, and the overall length and width of the first layer of bags are the same as the waterproof layer. The inner cavities of adjacent first water bags are not interconnected. The central portion of the sidewall on the same side of all the first water bags is fixedly connected to the waterproof layer; The four sides of the first layer of the bag are respectively connected to the waterproof layer through the connector to form a closed connection; The space between the sidewall of the first water bag and the waterproof layer, and the space formed between the first water bag, the waterproof layer and the connector, constitute the second water bag; all the second water bags constitute the second bag body; The binding structure is connected to the connector head in the longitudinal direction.

2. The cooling compress bag with uniform cooling effect according to claim 1, characterized in that: The thickness TH of the edge of the connector that connects to the first layer of the bag body is: TH≥th2+th1 / 2; Where th1 is the thickness of the first water bag after it is filled with liquid, and th2 is the thickness of the waterproof layer.

3. The cooling compress bag with uniform cooling effect according to claim 1, characterized in that: The inner cavities of the second water bag are sealed to each other.

4. The cooling compress bag with uniform cooling effect according to claim 1, characterized in that, It also includes: insert structure and shaped metal sheet; The insert structure is elongated, with a length less than or equal to the width of the first layer of the bag. The insert structure based on the slot is located on the side wall of the connector head away from the waterproof layer. The shaped metal sheet is movably inserted into the insert structure.

5. The cooling compress bag with uniform cooling effect according to claim 4, characterized in that: The insertion structure is a slot or a bag-shaped structure.

6. The cooling compress bag with uniform cooling effect according to claim 1, characterized in that: The cross-sectional shape of the first water bag includes: a centrally symmetrical rhombus or a spindle shape.

7. The cooling compress bag with uniform cooling effect according to claim 1, characterized in that: It also includes: a skin-friendly layer, which is based on a cooling fabric and is disposed on the side of the waterproof layer away from the first and second water bags; the skin-friendly layer is a rectangular sheet structure, the size and shape of which are adapted to the waterproof layer.

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