Plastic ice bag

Abstract

The invention relates to the technical field of medical ice bags, and discloses a plastic ice bag which comprises an ice bag body, a sealing edge is arranged on the periphery of the ice bag body, a cavity is formed in the sealing edge, magnetorheological fluid is accumulated in the cavity, a wire is arranged in the cavity, the wire is immersed in the magnetorheological fluid, a power supply assembly is arranged on one side of the ice bag body, and the power supply assembly is arranged on the other side of the ice bag body. When the power supply assembly supplies power to the wire, a magnetic field generated by the wire changes the state of the magnetorheological fluid, and the ice bag body is shaped. By utilizing the characteristic that the rheological property of the magnetorheological fluid is reversible and rapidly changed under the action of a magnetic field, the magnetorheological fluid is solidified by electrifying the wire, the ice bag body is fixed into a required shape and is tightly attached to the curved surface of the body of a patient, and the problems that the cooling efficiency is reduced, and displacement and sliding are prone to occurring due to insufficient contact of a traditional ice bag are solved; after the magnetic field is removed, the magnetorheological fluid rapidly recovers to be in the liquid state, and reshaping is facilitated to adapt to different parts or adjust the cold compress posture.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical ice bags, in particular to a plastic ice bag. BACKGROUND

[0002] A medical ice bag is a cooling device specially designed for medical purposes, which realizes physical cooling, pain relief or auxiliary treatment through low-temperature effect. Its core principle is to use internal cold storage material to absorb heat to achieve the purpose of continuous cooling.

[0003] For the medical ice bag in the prior art, it does not have the function of shaping, that is, the ice bag cannot form a shape that fits the patient's body, which will directly lead to insufficient contact between the cooling area and the target site, forming a local gap. This gap will hinder the effective conduction of heat, greatly reduce the heat exchange efficiency between the ice bag and the skin, and thus weaken the physical cooling effect. For example, when used in joint sprain or postoperative swelling site, it may not be able to accurately control the local temperature due to poor fit, prolonging the period of swelling and pain relief. At the same time, the ice bag that does not fit is easy to shift or fall when the patient moves, and needs to be adjusted manually frequently, which not only increases the nursing burden, but also may cause the ice bag to be damaged or the cold compress to be interrupted due to improper operation.

[0004] Therefore, it is necessary to design a plastic ice bag to solve the above problems. SUMMARY

[0005] The purpose of the present application is to solve the problems existing in the prior art and provide a plastic ice bag.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme: A plastic ice bag, comprising an ice bag body, the ice bag body is provided with an edge around, the edge is internally provided with a cavity, the cavity is internally accumulated with a magnetorheological fluid, and a wire is arranged in the cavity and immersed in the magnetorheological fluid. One side of the ice bag body is provided with a power supply assembly for supplying power to the wire, when the power supply assembly supplies power to the wire, the magnetic field generated by the wire changes the state of the magnetorheological fluid, and the ice bag body is shaped.

[0007] As a preferred technical scheme of the present application, a circular opening is formed on one side of the ice bag body, an annular fixing piece is fixed on one side of the ice bag body, and the annular opening of the fixing piece is arranged opposite to the circular opening, a fixing tube is fixed in the annular opening of the fixing piece, both ends of the fixing tube are in an open structure, one end of the fixing tube is connected with the circular opening, a screw cap is threadedly sleeved on the fixing tube, the power supply assembly is arranged on the fixing tube, and two first electric contacts are arranged on the fixing piece.

[0008] As a preferred embodiment of the present invention, the power supply component includes a mounting ring, which is sleeved on a fixed tube. A battery compartment is fixed on the mounting ring. Two second electrical contacts are provided on one side of the mounting ring. When the mounting ring is assembled in place, the two second electrical contacts respectively contact the two first electrical contacts, so that the battery compartment, the two second electrical contacts, the two first electrical contacts, and the wires together form a connected circuit loop.

[0009] As a preferred embodiment of the present invention, the outer surface of the fixing tube is provided with two protrusions, and the opening of the mounting ring is provided with two grooves.

[0010] As a preferred embodiment of the present invention, the mounting ring is provided with a tightening assembly for restraining the ice pack body on the patient's body. The tightening assembly includes a rotating ring, which is rotatably mounted on one side of the mounting ring and is coaxially arranged with the mounting ring. Two straps are fixed to the outer circumferential surface of the rotating ring.

[0011] As a preferred embodiment of the present invention, the two straps are connected by a connector, which is selected from Velcro, plastic buckle or snap fastener.

[0012] As a preferred embodiment of the present invention, the ice pack body is provided with an expansion component, the expansion component includes two expansion ice packs, the two expansion ice packs are respectively disposed on both sides of the ice pack body, each expansion ice pack is connected to the ice pack body, and two constraint pieces are fixed at the end of each expansion ice pack away from the ice pack body, the constraint pieces are made of a malleable material.

[0013] As a preferred embodiment of the present invention, the cap has an opening and an inflation assembly is provided on the cap. The inflation assembly is used to inflate two extended ice packs. The inflation assembly includes a cylinder, which is fixed in the opening. An air inlet is provided at one end of the cylinder away from the opening, and an opening is also provided at the other end of the cylinder away from the opening. A movable rod is slidably disposed in the opening. One end of the movable rod is located inside the cylinder, and the other end is located outside the cylinder. A pressing cap is fixed at the end of the movable rod outside the cylinder, and the pressing cap is connected to the cylinder by a spring. A sliding plug structure is provided at the end of the movable rod inside the cylinder. As the sliding plug structure reciprocates within the cylinder, it inflates the two extended ice packs.

[0014] As a preferred embodiment of the present invention, the sliding plug structure includes an outer ring and a circular plate. The circular plate is connected to one end of the movable rod located inside the cylinder. The outer ring and the circular plate are connected by several connecting strips. There is a gap between the outer ring and the circular plate, which forms an air passage. A flexible diaphragm is connected to the side of the outer ring, and the flexible diaphragm has an annular structure. The opening of the flexible diaphragm is directly opposite the circular plate. The diameter of the opening of the flexible diaphragm is smaller than the diameter of the circular plate. The flexible diaphragm is made of a flexible material.

[0015] As a preferred embodiment of the present invention, a sealing ring is provided on the outer peripheral surface of the outer ring, and the sealing ring is in contact with the inner surface of the cylinder.

[0016] The present invention has the following beneficial effects: 1. Utilizing the reversible and rapid change of rheological properties of magnetorheological fluid under the action of a magnetic field, the magnetorheological fluid is solidified by passing electricity through a wire, fixing the ice pack body into the required shape and closely conforming to the patient's body curves. This avoids the problems of reduced cooling efficiency and easy displacement and slippage caused by insufficient contact of traditional ice packs. After the magnetic field is removed, the magnetorheological fluid quickly returns to a liquid state, making it easy to reshape to adapt to different parts or adjust the cold compress posture. 2. The tightening assembly uses a rotating ring and straps to secure the ice pack to the patient's body, eliminating the need for medical staff or patients to hold it, making it easy to use. The two straps can be quickly connected via connectors, and different lengths of straps can be configured for different ice application sites. 3. The two extended ice packs of the expansion component are connected to the ice pack body. Initially, they are rolled up. When rolled up, the plastic restraint sheet is bent into an L-shape to clamp the ice pack body and fix it in shape, preventing it from spreading out naturally. This makes it easy to use, store and transfer. When the area of ​​the patient that needs to be iced is larger than the size of the ice pack body, one or two extended ice packs can be unfolded. The low temperature medium can enter the extended ice pack through the ice pack body and be used together to ic the patient, increasing the icing area. There is no need to use multiple ice packs for icing at the same time. 4. The inflation component is set on the swivel cap. By pressing the swivel cap, the sliding plug structure reciprocates inside the cylinder. Under the action of the flexible diaphragm, air is continuously supplied to the ice pack body, causing the two extended ice packs to automatically unfold, facilitating the subsequent flow of low-temperature medium into the extended ice packs. 5. The process of adding cryogenic media has been optimized. The fixed tube has a large opening and is made of rigid material. Medical personnel can directly inject the media into the ice pack by simply unscrewing the cap. After adding the media, tightening the cap will seal it without the need for additional tools. The threaded structure has strong self-locking properties and reliable sealing, effectively avoiding the risk of leakage caused by loose seals in traditional ice packs. The large-diameter fixed tube also reduces liquid spillage or splashing during the addition process. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of a malleable ice pack proposed in this invention; Figure 2 for Figure 1 Enlarged view of the structure at point A; Figure 3 This is a cross-sectional structural diagram of a malleable ice pack proposed in this invention; Figure 4 for Figure 3 Enlarged view of the structure at point B; Figure 5 This is a schematic diagram of the exploded structure of a malleable ice pack proposed in this invention; Figure 6 Schematic diagram of the power supply component Figure 1 ; Figure 7 Schematic diagram of the power supply component Figure 2 ; Figure 8 This is a schematic diagram of the inflatable assembly. Figure 9 This is a schematic diagram of the sliding plug structure; Figure 10 This is a schematic diagram of the structure of a flexible diaphragm when it is bent and deformed. Figure 11 This is a schematic diagram illustrating the working principle of the inflatable assembly. Figure 12 This is a schematic diagram of the structure when two extended ice packs are deployed.

[0018] In the diagram: 1. Ice pack body; 11. Sealing edge; 111. Chamber; 112. Magnetorheological fluid; 113. Wire; 2. Fixing plate; 21. First electrical contact; 3. Fixing tube; 31. Rotating cap; 32. Protrusion; 4. Mounting ring; 41. Battery compartment; 42. Second electrical contact; 43. Rotating ring; 431. Strap; 44. Groove; 51. Expanding ice pack; 52. Restraining plate; 61. Cylinder; 611. Air inlet; 612. Opening; 62. Movable rod; 63. Press cap; 64. Spring; 651. Outer ring; 652. Circular piece; 653. Connecting strip; 654. Flexible diaphragm. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Reference Figures 1-12A malleable ice pack includes an ice pack body 1, with a sealing edge 11 around its perimeter. A cavity 111 is formed inside the sealing edge 11, containing a magnetorheological fluid 112. A wire 113 is arranged inside the cavity 111 and immersed in the magnetorheological fluid 112. The core characteristic of the magnetorheological fluid 112 is that its rheological properties change reversibly and rapidly under the influence of a magnetic field. This material is composed of micron- or nano-sized soft magnetic particles (such as carbonyl iron powder) and non-magnetic matrix. The ice pack consists of a carrier fluid (such as silicone oil or mineral oil) and additives (dispersants and anti-settling agents). In the absence of a magnetic field, it exhibits low-viscosity Newtonian fluid characteristics and can flow freely. However, when a magnetic field is applied, the magnetic particles change from magnetic neutrality to strong magnetism due to magnetic induction, interacting with each other to form chain-like or columnar structures. This causes the material to transform into a high-viscosity, low-flow Bingham fluid within milliseconds, exhibiting solid-like properties. After the magnetic field is removed, the material reverts to a liquid state. This liquid-solid transition is completely reversible. When the conductor 113 is energized, the magnetic field generated by the conductor 113 (a physical phenomenon of electromagnetism, which will not be elaborated upon here) can act on the magnetorheological fluid 112 within the chamber 111, causing the magnetorheological fluid 112 to solidify. When the magnetorheological fluid 112 is solidified, the shape of the ice pack body 1 is fixed. This design allows the ice pack body 1 to be fixed in the desired shape, enabling it to closely conform to the patient's body curves, avoiding the reduced cooling efficiency and easy displacement caused by insufficient contact in traditional ice packs. When the magnetic field is removed, the magnetorheological fluid 112 quickly returns to a liquid state, and the ice pack can be reshaped to adapt to different parts or adjust the cold compress posture. Specifically, medical staff first add a low-temperature medium to the inside of the ice pack body 1, and then attach the ice pack body 1 to the position where the patient needs to apply ice. When the ice pack body 1 forms a shape that fits the patient's body, the medical staff control the wire 113 to be energized, thereby causing the magnetorheological fluid 112 inside the sealing edge 11 to solidify and form, and finally fix the shape of the ice pack body 1.

[0021] Reference Figure 3As shown, a circular opening is provided on one side of the ice pack body 1. An annular fixing plate 2 is also fixed to one side of the ice pack body 1, with the annular opening of the fixing plate 2 directly facing the circular opening. A fixing tube 3 is fixed inside the annular opening of the fixing plate 2. Both ends of the fixing tube 3 are open, and one end of the fixing tube 3 is connected to the circular opening, allowing the fixing tube 3 to communicate with the interior of the ice pack body 1. The surface of the fixing tube 3 is threaded (existing technology, not shown in the figure). A screw cap 31 is threaded onto the fixing tube 3. When adding cryogenic medium to the ice pack body 1, medical personnel can remove or remove the screw cap 31 from the fixing tube 3 and add the cryogenic medium through the fixing tube 3. After adding, the screw cap 31 is tightened back onto the fixing tube 3. For existing ice packs, a water inlet is usually provided. When adding cryogenic medium, medical personnel need to first open the seal and use a funnel to assist in adding the medium. Liquid is added, and then the opening is gently squeezed to expel air. The seal is achieved through the pressure difference between the inside and outside of the ice pack, preventing liquid leakage. Compared with the prior art, the ice pack designed in this invention optimizes the process of adding cryogenic media. Because the opening of the fixing tube 3 is large and the fixing tube 3 is made of a rigid material (such as plastic), medical personnel only need to unscrew the cap 31 to directly inject the media into the ice pack through the fixing tube 3. After adding, tightening the cap 31 will achieve a seal. The entire operation does not require any additional tools, and the self-locking nature of the threaded structure ensures the reliability of the seal, effectively avoiding the risk of leakage caused by loose sealing of traditional ice packs. At the same time, the large-diameter fixing tube 3 reduces the spillage or splashing of liquid during the addition process, which is especially suitable for medical scenarios that require rapid replenishment of media. In addition, the threaded connection of the cap 31 is easy to disassemble and reassemble, which supports the replacement of media after a single use and allows for repeated filling to extend the service life of the ice pack. Reference Figures 5-7As shown, the fixing plate 2 is provided with two first electrical contacts 21, and the fixing tube 3 is fitted with a power supply assembly for supplying power to the wire 113. The power supply assembly includes a mounting ring 4, which is fitted onto the fixing tube 3. When the mounting ring 4 is fitted onto the fixing tube 3, the ring opening of the mounting ring 4 fits against the outer surface of the fixing tube 3 to ensure the connection stability between the two. A battery compartment 41 is fixed on the mounting ring 4, and the battery compartment 41 contains a storage battery for power supply. Two second electrical contacts 42 are provided on one side of the mounting ring 4. When the mounting ring 4 is installed in place, the two second electrical contacts 42 contact the two first electrical contacts 21 respectively. At this time, the battery compartment 41, the two second electrical contacts 42, the two first electrical contacts 21, and the wire 113 together form a connected circuit loop, enabling the storage battery in the battery compartment 41 to supply power to the wire 113. The specific wire connection method in this circuit is prior art and is not shown in the figure. It will not be described in detail here. To ensure smooth connection between the two second electrical contacts 42 and the two first electrical contacts 21, two protrusions 32 are provided on the outer surface of the fixing tube 3, and two grooves 44 are opened at the opening of the mounting ring 4. When assembling the mounting ring 4, the two grooves 44 need to be aligned with the two protrusions 32 respectively. When the mounting ring 4 is assembled in place, the two protrusions 32 are respectively inserted into the two grooves 44. The two protrusions 32 and the two grooves 44 together play a positioning role in the assembly angle of the mounting ring 4, so that the two second electrical contacts 42 and the two first electrical contacts 21 can be smoothly connected. Furthermore, the mounting ring 4 can also be equipped with circuit modules such as a PWM controller (which controls the average current by adjusting the duty cycle of the pulse, suitable for scenarios that require precise current control), a microcontroller (such as Arduino, STM32, etc., for control logic), a fuse (overcurrent protection), a Zener diode (overvoltage protection), and a switch (controlling the on and off of the circuit) to ensure the normal use of the above circuits. Reference Figure 1As shown, a tightening assembly is provided on the mounting ring 4 to restrain the ice pack body 1 to the patient's body. The tightening assembly includes a rotating ring 43, which is rotatably mounted on one side of the mounting ring 4 and is coaxially arranged with the mounting ring 4. Two straps 431 are fixed to the outer circumference of the rotating ring 43. After the ice pack body 1 is attached to the patient's ice application position, medical personnel can use the two straps 431 to tie the ice pack body 1 to the patient's body, thereby fixing the position of the ice pack body 1. By setting up the tightening assembly, it is not necessary for medical personnel or patients to hold the ice pack for ice application. To facilitate the practical use of the ice pack body 1, it should be noted that the two straps 431 are connected by a connector, which can be one of Velcro, plastic buckle, or snap fastener, to facilitate quick connection between the two straps 431. In addition, the ice pack body 1 proposed in this invention can be configured with two straps 431 of different lengths. When used for ice application to the patient's limbs, head, or neck, the ice pack body 1 can be configured with a short strap 431. When used for ice application to the patient's waist, back, or chest, the ice pack body 1 can be configured with a long strap 431.

[0022] Reference Figure 12 As shown, to increase the single-application area of ​​the ice pack body 1, this invention designs an extension component, such as... Figure 2 , Figure 4 and Figure 12 As shown, the expansion component includes two expansion ice packs 51, which are respectively disposed on both sides of the ice pack body 1. Each expansion ice pack 51 is connected to the ice pack body 1. In the initial state, both expansion ice packs 51 are in a coiled structure, forming a shape as shown in the figure. Figure 1 As shown, each expandable ice pack 51 has two restraining tabs 52 fixed at the end furthest from the ice pack body 1. The restraining tabs 52 are made of a malleable material, such as thin iron sheets, thin aluminum sheets, or tin foil sheets. When the expandable ice pack 51 is rolled up, medical personnel can bend the two restraining tabs 52 at the ends of the expandable ice pack 51 into an L-shaped structure, using the two restraining tabs 52 to clamp the ice pack body 1, thereby shaping the expandable ice pack 51 in the rolled-up state, preventing the expandable ice pack 51 from unraveling naturally, and facilitating the use, storage, and transfer of the ice pack body 1. The shape of the restraint piece 52 can be freely adjusted and naturally fixed after adjustment. When the area of ​​the patient requiring ice application is larger than the size of the ice pack body 1, medical staff can unfold one or two extended ice packs 51. Since the extended ice pack 51 is connected to the ice pack body 1, when the extended ice pack 51 is unfolded, the low temperature medium can enter the extended ice pack 51 through the ice pack body 1. In this case, the ice pack body 1 and the unfolded extended ice pack 51 can work together to apply ice to the patient, increasing the ice application area of ​​the ice pack, and eliminating the need to use multiple ice packs to apply ice to the patient.

[0023] It is worth mentioning that, for the extended ice pack 51 in the rolled-up state, the bag body of the extended ice pack 51 is in a closed state, which prevents the low-temperature medium inside the ice pack body 1 from entering the extended ice pack 51 during normal use, thus avoiding unnecessary medium flow.

[0024] Reference Figures 8-11 As shown, to facilitate the rapid deployment of the two expandable ice packs 51 and the subsequent entry of the cryogenic medium into the expandable ice packs 51, this invention designs an inflation assembly. The inflation assembly is mounted on the cap 31. Specifically, the cap 31 has an opening. The inflation assembly includes a cylinder 61, which is fixed in the opening. An air inlet 611 is provided at the end of the cylinder 61 away from the opening for replenishing gas. An opening 612 is also provided at the end of the cylinder 61 away from the opening. A movable rod 62 is slidably mounted in the opening 612. One end of the movable rod 62 is located inside the cylinder 61, and the other end is located outside the cylinder 61. A pressing cap 63 is fixed to the end of the movable rod 62 outside the cylinder 61, and the pressing cap 63 is connected to the cylinder 61 by a spring 64. A sliding cap is provided at the end of the movable rod 62 inside the cylinder 61. The plug structure includes an outer ring 651 and a circular plate 652. The circular plate 652 is connected to one end of the movable rod 62 located inside the cylinder 61. The outer ring 651 and the circular plate 652 are connected by several connecting strips 653. There is a gap between the outer ring 651 and the circular plate 652, which forms an air passage. A flexible diaphragm 654 is connected to the side of the outer ring 651. The flexible diaphragm 654 has an annular structure. The opening of the flexible diaphragm 654 is directly opposite the circular plate 652. The diameter of the opening of the flexible diaphragm 654 is smaller than the diameter of the circular plate 652. The flexible diaphragm 654 is made of a flexible material, such as rubber. In the initial state, under the action of the elastic force of the flexible diaphragm 654, the side of the flexible diaphragm 654 is not only in contact with the outer ring 651, but also in contact with the circular plate 652. When two expandable ice packs 51 are needed, the staff first releases the restraint of the restraint piece 52 from the expandable ice packs 51, allowing the two expandable ice packs 51 to naturally open. Then, they pinch the cap 31 with their fingers while continuously pressing the pressing cap 63 with their palm. When the pressing cap 63 is pressed, it can move the circular piece 652 through the movable rod 62. When the circular piece 652 moves, it moves the outer ring 651 through several connecting pieces. At the same time, the pressing cap 63 compresses the spring 64, causing the spring 64 to compress. Conversely, when the pressing cap 63 is not under pressure, it will return to its original position under the elastic force of the spring 64, causing the outer ring 651 and the circular piece 652 to return to their original positions. Therefore, when the medical staff continuously presses the pressing cap 63, the sliding plug structure will reciprocate inside the cylinder 61. Figure 9 , Figure 10 and Figure 11As shown, when the outer ring 651 moves towards the direction closer to the swivel cap 31, the flexible diaphragm 654 will compress the gas on one side of the outer ring 651. Under the resistance of the airflow, the flexible diaphragm 654 is in a state of adhering to the circular piece 652. At this time, the flexible diaphragm 654 can block the gap between the outer ring 651 and the circular piece 652. The outer ring 651, the flexible diaphragm 654, and the circular piece 652 together form a closed surface. This closed surface can force the gas into the two extended ice packs 51. Conversely, when the outer ring 651 moves away from the swivel cap 31, the air pressure between the other side of the outer ring 651 and the cylinder 61 gradually increases. This allows the gas on the other side of the outer ring 651 to push the flexible diaphragm 654, causing the flexible diaphragm 654 to deform. Since the outer edge of the flexible diaphragm 654 is fixed on the outer ring 651, under the pushing action of the gas, the ring position of the flexible diaphragm 654 will move and separate from the circular piece 652, forming a... Figure 10 In the state shown, the flexible diaphragm 654 no longer blocks the gap between the outer ring 651 and the circular plate 652, allowing gas to flow through the air passage between the outer ring 651 and the circular plate 652 and flow to the side of the outer ring 651 near the swivel cap 31. At the same time, the air inlet 611 on the cylinder 61 is used to replenish the gas, so that the gas is automatically replenished into the cylinder 61. Based on the above process, under the action of the flexible diaphragm 654, the sliding plug structure can continuously supply gas to the inside of the ice pack body 1 during the reciprocating movement, so that the gas continuously enters the two extended ice packs 51. With the entry of gas, the two extended ice packs 51 can automatically unfold, and the bag body of the extended ice pack 51 is no longer in a closed state, which facilitates the flow of low temperature medium into the interior of the extended ice pack 51 during subsequent filling.

[0025] Reference Figure 12 As shown, when applying ice packs 51 to the patient, medical personnel can adjust the position of the rotating ring 43 so that the two straps 431 rotate to a position directly opposite the two expanding ice packs 51, forming a shape as shown. Figure 12 As shown, in this state, medical personnel can use two straps 431 to tie the ice pack body 1 and the two extended ice packs 51 together to the patient's body, thereby securing the two extended ice packs 51.

[0026] The specific working principle of this invention is as follows: When this malleable ice pack is in use, medical personnel first unscrew the cap 31 and add the cryogenic medium into the ice pack body 1 through the fixing tube 3. After adding the medium, tighten the cap 31. Because the fixing tube 3 has a large opening and is made of a rigid material, no additional tools are required. The threaded structure has good self-locking properties, avoiding the risk of leakage caused by loose sealing of traditional ice packs. The large diameter also reduces liquid spillage and splashing, making it suitable for medical scenarios where the medium needs to be replenished quickly. The cap 31 is easy to disassemble and reassemble, supporting medium replacement and refilling to extend the life of the ice pack. Next, the ice pack body 1 is placed on the area where the patient needs ice application. Once it has formed a shape that fits the patient's body, the mounting ring 4 is put on the fixing tube 3, so that the two grooves 44 are aligned with the two protrusions 32 respectively. After installation, the two protrusions 32 respectively engage with the two grooves 44. At this point, the two second electrical contacts 42 are in contact with the two first electrical contacts 21 respectively. The battery compartment 41, the two second electrical contacts 42, the two first electrical contacts 21, and the wire 113 together form a connected circuit. The battery supplies power to the wire 113, and the energized wire 113 generates a magnetic field that acts on the magnetorheological fluid 112 in the chamber 111. The magnetic particles in the magnetorheological fluid 112 change from magnetic neutrality to strong magnetism due to magnetic induction, interacting with each other to form chain-like or columnar structures. Within milliseconds, it transforms into a high-viscosity, low-flow Bingham fluid, exhibiting solid-like properties. This fixes the shape of the ice pack body 1, allowing it to closely conform to the patient's body curves. This avoids the problems of reduced cooling efficiency and easy displacement and slippage caused by insufficient contact in traditional ice packs. When the area requiring ice application is larger than the size of the ice pack body 1, the constraint plate 52 is released from its restraining effect on the rolled-up ice pack 51, allowing the two expanded ice packs 51 to naturally unfurl. The fingertips are used to pinch the cap 31, and the palm continuously presses down on the pressing cap 63. The pressing cap 63, via the movable rod 62, moves the circular piece 652. The circular piece 652, via several connecting pieces, moves the outer ring 651. Simultaneously, the pressing cap 63 compresses the spring 64. As the medical staff continuously presses the pressing cap 63, the sliding plug structure... The cylinder 61 reciprocates inside. When the outer ring 651 moves towards the swivel cap 31, the flexible diaphragm 654 compresses the gas on one side of the outer ring 651. Under the action of airflow resistance, it adheres to the circular plate 652, blocking the gap between the outer ring 651 and the circular plate 652. The outer ring 651, the flexible diaphragm 654, and the circular plate 652 together form a closed surface, forcing the gas into the two extended ice packs 51. When the outer ring 651 moves away from the swivel cap 31, the other side of the outer ring 651 adheres to the cylinder 61. The increased air pressure between the two rings causes the flexible diaphragm 654 to deform, moving its annular position and separating it from the circular plate 652. Gas flows through the air passage between the outer ring 651 and the circular plate 652 to the side of the outer ring 651 near the swivel cap 31. Simultaneously, the air inlet 611 replenishes the gas. Under the action of the flexible diaphragm 654, the sliding plug structure reciprocates, continuously supplying gas to the interior of the ice pack body 1, allowing gas to enter the two extended ice packs 51. The two extended ice packs 51 automatically expand, allowing the cryogenic medium to pass through the ice pack. The ice pack body 1 is inserted into the expanded ice pack 51. The ice pack body 1 and the expanded ice pack 51 work together to apply ice to the patient, increasing the ice application area. Then, the position of the rotating ring 43 is adjusted so that the two straps 431 are rotated to face the two expanded ice packs 51. The two straps 431 are used to tie the ice pack body 1 and the two expanded ice packs 51 together to the patient's body for fixation. After the magnetic field is removed, the magnetorheological fluid 112 quickly returns to a liquid state, and the ice pack can be reshaped to adapt to different parts or adjust the cold application posture.

[0027] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A malleable ice pack comprising an ice pack body (1), characterized in that, The ice bag body (1) is provided with an edge (11) around, the edge (11) is internally provided with a cavity (111), the cavity (111) is internally accumulated with magneto-rheological fluid (112), the cavity (111) is internally arranged with wire (113), and wire (113) is immersed in magneto-rheological fluid (112); The ice bag body (1) is provided with a power supply assembly on one side, for supplying power to the wire (113), when the power supply assembly supplies power to the wire (113), the magnetic field generated by the wire (113) changes the state of the magneto-rheological fluid (112), and the ice bag body (1) is shaped.

2. A pliable ice bag according to claim 1, wherein The ice bag body (1) is provided with a circular port on one side, and the ice bag body (1) is further provided with an annular fixing sheet (2) on one side, and the annular port of the fixing sheet (2) is opposite to the circular port, the fixing tube (3) is fixed in the annular port of the fixing sheet (2), both ends of the fixing tube (3) are in open structure, and one end of the fixing tube (3) is connected with the circular port, the rotating cap (31) is threadedly sleeved on the fixing tube (3), the power supply assembly is arranged on the fixing tube (3), and the fixing sheet (2) is provided with two first electric contacts (21).

3. A pliable ice bag according to claim 2, wherein The power supply assembly comprises a mounting ring (4), the mounting ring (4) is sleeved on the fixing tube (3), the mounting ring (4) is fixed with a battery compartment (41), the mounting ring (4) is provided with two second electric contacts (42) on one side, when the mounting ring (4) is assembled in place, the two second electric contacts (42) respectively contact the two first electric contacts (21), so that the battery compartment (41), the two second electric contacts (42), the two first electric contacts (21) and the wire (113) form a connected circuit loop.

4. A pliable ice bag according to claim 3, wherein The outer surface of the fixing tube (3) is provided with two protrusions (32), and the annular port of the mounting ring (4) is provided with two grooves (44).

5. A pliable ice bag according to claim 3, wherein The mounting ring (4) is provided with a tightening assembly for restraining the ice bag body (1) on the patient's body, the tightening assembly comprises a rotating ring (43), the rotating ring (43) is rotatably installed on one side of the mounting ring (4), and the rotating ring (43) and the mounting ring (4) are coaxially arranged, and the outer circumferential surface of the rotating ring (43) is fixed with two belts (431).

6. A pliable ice bag according to claim 5, wherein The two belts (431) are connected by a connecting piece, and the connecting piece is selected from one of magic tape, plastic buckle or snap.

7. A malleable ice pack according to any one of claims 1-3, wherein, The ice bag body (1) is provided with an expansion assembly, the expansion assembly comprises two expansion ice bags (51), and the two expansion ice bags (51) are arranged on both sides of the ice bag body (1) respectively, each expansion ice bag (51) is communicated with the ice bag body (1), and each expansion ice bag (51) is fixed with two constraint sheets (52) away from the ice bag body (1), and the constraint sheet (52) is made of plastic material.

8. A pliable ice bag according to claim 7, wherein The rotating cap (31) is provided with a through hole, and is provided with an inflation assembly for inflating two expansion ice bags (51). The inflation assembly comprises a cylinder (61) fixed in the through hole, an air inlet hole (611) is formed in one end of the cylinder (61) away from the through hole, and an opening (612) is also formed in the one end of the cylinder (61) away from the through hole. An activity rod (62) is slidably arranged in the opening (612), one end of the activity rod (62) is located in the cylinder (61), the other end of the activity rod (62) is located outside the cylinder (61), a pressing cap (63) is fixed to one end of the activity rod (62) located outside the cylinder (61), and the pressing cap (63) is connected with the cylinder (61) through a spring (64). The activity rod (62) is provided with a sliding plug structure at the one end located in the cylinder (61). When the sliding plug structure reciprocates in the cylinder (61), the sliding plug structure performs an inflation action on the two expansion ice bags (51).

9. A pliable ice bag according to claim 8, wherein, The sliding plug structure comprises an outer ring (651) and a circular sheet (652), the circular sheet (652) is connected with the one end of the activity rod (62) located in the cylinder (61), the outer ring (651) and the circular sheet (652) are connected through a plurality of connecting strips (653), and a gap is formed between the outer ring (651) and the circular sheet (652), which forms an air channel. A flexible diaphragm (654) is connected to the side surface of the outer ring (651) and has an annular structure, the annular opening of the flexible diaphragm (654) is arranged opposite to the circular sheet (652), the annular opening of the flexible diaphragm (654) has a smaller diameter than the circular sheet (652), and the flexible diaphragm (654) is made of a flexible material.

10. A pliable ice bag according to claim 9, wherein A sealing ring is arranged on the outer circumferential surface of the outer ring (651) and is attached to the inner surface of the cylinder (61).

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