Rescue device built into the foam bag

Abstract

This invention provides a rescue device built into a foam bag for use in water rescue, on-site medical care, and radiotherapy models. The rescue device includes a plastic bag and a foam bag, wherein: the plastic bag has a sealed cavity structure; the foam bag is placed inside the sealed cavity of the plastic bag; the interior of the foam bag is divided into several independent chambers, with adjacent chambers separated by welded plastic partitions, and each chamber is filled with a different foam material. In use, the partitions are squeezed open by hand, and the foam material mixes, expands, and bursts through the seal, quickly flowing into all corners of the plastic bag. It has a good molding effect, cures rapidly after molding, and is easy to operate.

Description

Technical Field

[0001] This utility model relates to the fields of life-saving equipment and on-site medical rescue technology, specifically to a rescue device built into a foam bag. Background Technology

[0002] Foaming molding technology has been applied in some fields due to its fast molding speed and good molding effect, such as on-site rescue and radiotherapy. However, current foaming technology requires an injection port to be opened in the plastic bag. The foaming material mixed on the outside is injected into the plastic bag through a syringe, or it is mixed in an external container and then poured into the plastic bag. Because the foaming material is molded very quickly, it must be operated by skilled technicians. Moreover, when the plastic bag is large, there is often not enough time for the foaming material to flow to every corner, resulting in poor plasticity.

[0003] In addition, technicians discovered that the lightweight and buoyant foam material is ideal for water rescue. Current pre-molded life rings, life jackets, and life rafts are bulky, making them inconvenient to transport, store, and carry. Inflatable life rings, life jackets, and life rafts require inflation equipment, which can delay rescue efforts in emergency situations. Furthermore, the fabric requires high airtightness; it is prone to leakage and punctures, rendering the device ineffective in rescue operations.

[0004] Application number CN201921890628.8 discloses a life jacket in which foaming material is stored in an external compression bottle. When needed, it is injected into the apron through a control valve and connecting pipe, where a foaming reaction occurs. The disadvantages of this patented design are: 1. Complex structure and high cost. 2. Reliance on external equipment such as compression bottles; the connecting pipe and control valve may malfunction. 3. The injection process may be affected by environmental factors, preventing the foaming material from smoothly flowing into each apron through the connecting channels.

[0005] Application number CN201320422069.4 discloses a ship-launched lifebuoy. This patent uses a highly absorbent resin material (sodium polyacrylate resin) as the trigger mechanism. After the lifebuoy hits the water, water enters through small holes, automatically triggering foaming. The disadvantages of this patented design are: 1. In emergency rescue situations, water entering the lifebuoy through the pin holes takes time, and the reaction time of the foaming material after encountering water is unstable, potentially affecting the rescue effect. 2. It is inconvenient to store; storage conditions must be kept completely dry.

[0006] Application number CN105128246B discloses a method for manufacturing a lifebuoy and a lifebuoy manufactured using this method. This patent first involves evenly placing elastic foamed material (PVC) into upper and lower molds, but requires heating the molds to 170-180°C and maintaining this pre-foaming temperature for 30-40 minutes. This operation is difficult to implement in actual emergency rescue operations. Utility Model Content

[0007] To address the technical problems of existing rescue equipment, such as complex structure and unsuitability for emergency rescue, this utility model provides a rescue device built into a foam bag. When in use, the partition is squeezed open by hand, and after the foaming material is mixed, it expands and bursts open the seal, quickly flowing to all corners of the plastic bag and solidifying rapidly. It has a good molding effect and is easy to operate.

[0008] The solution to the above-mentioned technical problems provided by this utility model is as follows:

[0009] The rescue device built into the foam bag includes a plastic bag and a foam bag, wherein:

[0010] The plastic bag has a closed cavity structure inside;

[0011] The foam bag is placed inside the sealed cavity of the plastic bag;

[0012] The foam bag is divided into several independent chambers, which are separated by plastic welded partitions. Each chamber is filled with a different foaming material.

[0013] This patent allows for the design of multiple foam bags, which can be distributed in different locations on the rescue device to achieve a more uniform foaming effect and improve stability, reliability, and safety.

[0014] Common plastic welding processes include ultrasonic welding, laser welding, friction welding, high-frequency welding, vibration welding, hot plate welding, hot gas welding, and rotary welding.

[0015] The foam bag is a first rectangle, which is folded along the center line to form a second rectangle. Except for the folded edge, the other three sides of the second rectangle are sealed with plastic welding. The axis of symmetry of the second rectangle is separated by plastic welding, and the welding strength of the separated edge is less than that of the sealed edge.

[0016] The foam bag consists of two first rectangles, with the four sides of the two first rectangles welded together to form a sealed edge. The interior of the two first rectangles is uniformly welded together with multiple partitions, and the welding strength of the partitions is less than that of the sealed edge.

[0017] The welding strength can be adjusted by printing on the welding surface, changing the shape of the welding die, and adjusting the pressure and temperature.

[0018] This allows the seal to be broken first when the foam bag is subjected to external pressure, so that the two foaming materials can mix, react and expand, producing a large amount of foam that breaks the seal. However, it is also possible that the expansion speed is too fast and directly breaks the entire foam bag.

[0019] One side of the foam bag is bonded to the inner wall of the plastic bag, so that the foam bag is fixed in a suitable position on the inner wall of the plastic bag.

[0020] The plastic bag is made of waterproof and breathable material, while the foam bag is made of waterproof plastic material.

[0021] The foam bag has two chambers, one filled with a polyether blend and the other with isocyanurate.

[0022] When not in use, the two foaming materials cannot come into contact and react. When needed, simply apply external force, such as squeezing the foaming material by hand, to open the partition and mix the two materials. At this time, you can quickly knead the foaming material to accelerate the reaction. After the foaming material reacts, it will expand in volume, producing a large amount of foam. The foam will quickly burst open the seal and fill the entire interior of the plastic bag. The foam will quickly solidify into a closed-cell rigid foam structure. This rigid foam structure has low density and low specific gravity, which can generate great buoyancy on water, thus achieving the effect of water rescue. Moreover, it is not afraid of being punctured by sharp objects, and it will not affect its buoyancy even if the outer plastic bag is cut, torn, or peeled off.

[0023] The plastic bag is a life ring, life raft, or life jacket used for water rescue.

[0024] The shaping bag is designed for on-site first aid and is adapted to the shape of the human neck, upper limbs, lower limbs, waist, or whole body.

[0025] The shaping bag is a conformal positioning bag for radiotherapy.

[0026] The position and number of foam bags can be rationally arranged according to different product forms to achieve better foaming effects and more easily adapt to various usage scenarios and body shape requirements. Various auxiliary straps or positioning devices can be set on the outside of the plastic bags to facilitate fixing and connecting them to people in need of rescue, or to facilitate rescue personnel to carry out rescue operations.

[0027] This invention has the following advantages over the prior art:

[0028] 1. Simple structure: Primarily composed of a plastic bag and a foam bag, requiring no complex mechanical structure. The foam bag features a compartmentalized design, separating different foaming components through partitions to ensure storage safety. Multiple foam bags can be designed to achieve a more uniform foaming effect.

[0029] 2. Simple operation: The foaming reaction can be triggered by manual squeezing. No additional equipment is required. The reaction speed is fast and it can quickly form a rescue device in an emergency. It does not rely on external energy or inflation equipment, which improves reliability.

[0030] 3. Storage and transportation advantages: When not in use, it is small in size and light in weight, making it easy to store and carry. It can be stockpiled in large quantities to achieve emergency preparedness with "one piece per person". It has low storage requirements and does not require a special environment.

[0031] 4. Safety and Reliability: After foaming, it forms a closed-cell rigid foam structure, which is lightweight. Even if the plastic bag is damaged, it will not affect the use effect. It is not afraid of being punctured by sharp objects, avoiding the problem of easy air leakage in traditional inflatable rescue equipment, thus improving the overall reliability.

[0032] 5. After molding, the plastic bag has high strength, low density, and high X-ray transmittance, allowing it to be directly inserted into X-ray equipment.

[0033] 6. Application Flexibility: It can be designed as (1) life rings, life rafts or life jackets for water rescue. (2) shapes that adapt to the neck, upper limbs, lower limbs, waist or whole body for on-site rescue. (3) conformal positioning bags for radiotherapy. Adapting to different rescue scenarios and usage needs, auxiliary devices such as straps can be added to improve practicality.

[0034] 7. Economic efficiency: The production process is relatively simple, the cost is controllable, mass production is convenient, it is suitable for large-scale manufacturing, the maintenance cost is low, and there is no need for regular inspection or maintenance. Attached Figure Description

[0035] Figure 1 This is a folding diagram of the plastic bag in Example 1 before use.

[0036] Figure 2 This is a structural diagram of the foam bag from Example 1.

[0037] Figure 3 yes Figure 2 The operation diagram.

[0038] Figure 4 yes Figure 3 Image of a bubble wrap bag bursting open.

[0039] Figure 5 yes Figure 1 An unfolded diagram of a plastic bag.

[0040] Figure 6 yes Figure 5 The operation diagram.

[0041] Figure 7 yes Figure 6 The molding diagram.

[0042] Figure 8 This is a folding diagram of the plastic bag in Example 2 before use.

[0043] Figure 9 yes Figure 8 The unfolded diagram.

[0044] Figure 10 yes Figure 9 The operation diagram.

[0045] Figure 11 yes Figure 10 The molding diagram.

[0046] Figure 12 This is a folding diagram of the plastic bag in Example 3 before use.

[0047] Figure 13 yes Figure 12 The unfolded diagram.

[0048] Figure 14 yes Figure 13 The operation diagram.

[0049] Figure 15 yes Figure 14 The molding diagram.

[0050] Figure 16 This is an unfolded diagram of the shaping bag from Example 4.

[0051] Figure 17 yes Figure 16 The operation diagram.

[0052] Figure 18 yes Figure 17 The usage diagram.

[0053] Figure 19 yes Figure 18 The molding diagram.

[0054] Figure 20 This is an unfolded diagram of the plastic bag from Example 5.

[0055] Figure 21 yes Figure 20 The operation diagram.

[0056] Figure 22 yes Figure 21 The usage diagram.

[0057] Figure 23 yes Figure 22 The molding diagram.

[0058] Figure 24 This is an unfolded diagram of the plastic bag from Example 6.

[0059] Figure 25 yes Figure 24 The operation diagram.

[0060] Figure 26 yes Figure 25 The usage diagram.

[0061] Figure 27 yes Figure 26 The molding diagram.

[0062] Figure 28 This is an unfolded diagram of the shaping bag from Example 7.

[0063] Figure 29 yes Figure 28 The operation diagram.

[0064] Figure 30 yes Figure 29 The usage diagram.

[0065] Figure 31 yes Figure 30 The molding diagram.

[0066] Figure 32 This is an unfolded diagram of the plastic bag from Example 8.

[0067] Figure 33 yes Figure 32 The operation diagram.

[0068] Figure 34 yes Figure 33 The usage diagram.

[0069] Figure 35 yes Figure 34 The molding diagram.

[0070] Figure 36 This is an unfolded diagram of the shaping bag from Example 9.

[0071] Figure 37 yes Figure 36 The operation diagram.

[0072] Figure 38 yes Figure 37 The usage diagram.

[0073] Figure 39 yes Figure 38 The molding diagram. Detailed Implementation

[0074] Example 1:

[0075] like Figures 1-7The rescue device built into the foam bag shown includes a plastic bag 1 and a foam bag 2, wherein: the plastic bag 1 has a closed cavity structure inside; the foam bag 2 is placed inside the closed cavity of the plastic bag 1; the foam bag 2 is divided into two independent chambers 3, and the adjacent chambers 3 are separated by plastic welded partitions 4, and each chamber 3 is filled with different foaming materials A and B.

[0076] like Figure 2 As shown, the foam bag 2 is a first rectangle, which is folded along the center line 5 to form a second rectangle. Except for the folded edge 5, the other three sides of the second rectangle are welded with plastic to form a sealing edge 6. The axis of symmetry of the second rectangle is welded with plastic to form a partition edge 4, and the welding strength of the partition edge 4 is less than the welding strength of the sealing edge 6.

[0077] One side of the foam bag 2 is attached to the inner wall of the plastic bag 1.

[0078] The shaping bag 1 is made of waterproof and breathable material, and the foam bag 2 is made of waterproof plastic material.

[0079] Inside the two chambers 3 of the foam bag 2, foaming material A is a composite polyether, and foaming material B is isocyanurate. (Of course, other foaming combinations can also be used.)

[0080] The plastic bag 1 is a lifebuoy used for water rescue.

[0081] Example 2:

[0082] like Figures 8-11 The foam bag shown contains a built-in rescue device. The plastic bag 1 is a life jacket for water rescue. After the foam material is mixed and molded, it can be worn.

[0083] Example 3:

[0084] like Figures 12-15 The foam bag shown contains a built-in rescue device. The plastic bag 1 is a life raft used for water rescue. After the foam material is mixed and molded, it can be used for boarding.

[0085] Example 4:

[0086] like Figures 16-19 The rescue device built into the foam bag shown is a plastic bag 1, which is designed to fit the shape of the human neck for on-site rescue. When worn around the neck during the foam material mixing and molding process, it can quickly form a shape that fits the injured person's neck, providing fixation and support, preventing secondary injuries, and facilitating the transport of the injured person.

[0087] Example 5:

[0088] like Figures 20-23The rescue device built into the foam bag shown is a plastic bag 1, which is designed to fit the shape of the human upper limb for on-site rescue. When it is worn on the upper limb during the foam material mixing and molding process, it can quickly form a shape that fits the injured person's upper limb, playing a role in fixing and supporting, avoiding secondary injury and facilitating the transport of the injured person.

[0089] Example 6:

[0090] like Figures 24-27 The rescue device built into the foam bag shown is a plastic bag 1, which is designed to fit the shape of the lower limbs for on-site rescue. When worn on the lower limbs during the foam material mixing and molding process, it can quickly form a shape that fits the injured person's lower limbs, playing a role in fixation and support, avoiding secondary injury and facilitating the transport of the injured person.

[0091] Example 7:

[0092] like Figures 28-31 The rescue device built into the foam bag shown is a plastic bag 1, which is designed to fit the waist of the human body for on-site rescue. When worn on the waist during the foam material mixing and molding process, it can quickly form a shape that fits the waist of the injured person, playing a role in fixation and support, avoiding secondary injury and facilitating the transport of the injured person.

[0093] Example 8:

[0094] like Figures 32-35 The rescue device built into the foam bag shown is a shaping bag 1 designed to fit the full body shape for on-site rescue. During the foam mixing and molding process, the injured person lies on the shaping bag, which quickly forms a shape that fits the full body shape of the injured person, providing fixation and support, preventing secondary injuries and facilitating the transport of the injured person.

[0095] Example 9:

[0096] like Figures 36-39 The foam bag shown contains a built-in rescue device; the shaping bag 1 is a radiotherapy conformal positioning bag for radiotherapy. During the foam mixing and molding process, the injured person lies on the shaping bag, which quickly forms a shape that adapts to the upper body of the injured person, providing fixation and facilitating radiotherapy.

Claims

1. A rescue device built into a foam bag, characterized in that: Including plastic bags and foam bags, of which: The plastic bag has a closed cavity structure inside; The foam bag is placed inside the sealed cavity of the plastic bag; The foam bag is divided into several independent chambers, which are separated by plastic welded partitions. Each chamber is filled with a different foaming material.

2. The rescue device built into the foam bag according to claim 1, characterized in that: The foam bag is a first rectangle, which is folded along the center line to form a second rectangle. Except for the folded edge, the other three sides of the second rectangle are sealed with plastic welding. The axis of symmetry of the second rectangle is separated by plastic welding, and the welding strength of the separated edge is less than that of the sealed edge.

3. The rescue device built into the foam bag according to claim 1, characterized in that: The foam bag consists of two first rectangles, with four sides of the two first rectangles welded together to form a sealed edge. Multiple partitions are uniformly welded together inside the two first rectangles, and the welding strength of the partitions is less than that of the sealed edge.

4. The rescue device built into the foam bag according to claim 1, characterized in that: One side of the foam bag is bonded to the inner wall of the plastic bag.

5. The rescue device built into the foam bag according to claim 1, characterized in that: The plastic bag is made of waterproof and breathable material, while the foam bag is made of waterproof plastic material.

6. The rescue device built into the foam bag according to claim 2, characterized in that: The foam bag has two chambers, one filled with a polyether blend and the other with isocyanurate.

7. The rescue device built into the foam bag according to claim 1, characterized in that: The plastic bag is a life ring, life raft, or life jacket used for water rescue.

8. The rescue device built into the foam bag according to claim 1, characterized in that: The shaping bag is designed for on-site first aid and is adapted to the shape of the human neck, upper limbs, lower limbs, waist, or whole body.

9. The rescue device built into the foam bag according to claim 1, characterized in that: The shaping bag is a conformal positioning bag for radiotherapy.

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