A cold compress type anti-swelling and fixation device for orthopedic limb trauma

Abstract

This invention discloses a cold-compression fixation device for orthopedic limb trauma, belonging to the field of medical device technology. It includes a main positioning plate, a secondary positioning plate, a cold compress plate, and a cold water circulation mechanism. The main positioning plate has rope channels on both sides, with a storage rope inside each channel. A storage mechanism is mounted on the surface of the main positioning plate, and the bottom end of the storage rope is connected to the secondary positioning plate. The storage mechanism includes a motor mounting box fixed to the middle of the outer side of the main positioning plate and storage boxes fixed to both ends of the outer side of the main positioning plate. A dual-axis servo motor is fixedly connected inside the motor mounting box, and a storage roller is rotatably connected inside the storage boxes. One end of the storage roller is fixedly connected to the output shaft of the dual-axis servo motor. This invention achieves electric adjustment of the distance between the main and secondary positioning plates through a storage rope system driven by a dual-axis servo motor. The long-stroke storage rope and the arc-shaped positioning plate can conform to different parts such as the arm, leg, and waist, expanding the applicability of traditional fixation devices.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically to a cold compress type swelling reduction and fixation device for orthopedic limb trauma. Background Technology

[0002] In orthopedic clinical treatment, swelling control and stable immobilization after limb trauma are crucial treatment aspects. Traditional immobilization devices (such as plaster casts, bandages, or simple braces) generally have the following limitations:

[0003] Most fixation devices require manual adjustment of tightness via straps, which demands a high level of skill from the operator and makes it difficult to accurately match the differences in limb parts (such as the thickness of the arm and the length of the leg). The fixation range is limited by the length and width of the straps, making it difficult to cover the curved anatomical structures such as the arms, legs, and waist. This results in unstable fixation effects, which can easily cause blood circulation disorders due to excessive tightness or secondary injury risks due to excessive looseness.

[0004] Existing cold compress devices are mostly independent modules that require additional wearing, and the cold compress medium (such as ice packs) is separate from the fixation device, resulting in a mismatch between the cold compress area and the fixation range; some cold compress devices rely on complex pipelines to connect to the circulating refrigeration system, which is bulky and cumbersome to operate, limiting the patient's freedom of movement during the recovery period.

[0005] For areas requiring special positioning for immobilization, such as the lower leg and lower back, traditional devices require patients to remove their shoes, keep the limb horizontal, or be inserted from the side of the head. This not only increases the risk of infection but may also exacerbate the patient's pain or psychological burden. For example, Chinese invention patent application number 202010297717.2 discloses a cold-compression emergency limb immobilizer. Although this product can quickly and conveniently immobilize fractured limbs with a clamping mechanism, and then apply cold compresses to the immobilized limbs, it can only immobilize the arm or lower leg, and the immobilization is inconvenient.

[0006] Therefore, it is necessary to propose a cold compress-type swelling-reducing fixation device for orthopedic limb trauma to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to address the problems of limited fixation methods and poor adaptability of existing cold compress-type swelling-reducing fixators for orthopedic limb trauma. This invention provides a cold compress-type swelling-reducing fixator for orthopedic limb trauma.

[0008] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0009] A cold compress type swelling reduction and fixation device for orthopedic limb trauma includes a main positioning plate, a secondary positioning plate, a cold compress plate, and a cold water circulation mechanism. The main positioning plate has rope channels on both sides, and a storage rope is provided inside the rope channel. A storage mechanism is installed on the surface of the main positioning plate. The top end of the storage rope is connected to the storage mechanism, and the bottom end of the storage rope is connected to the secondary positioning plate.

[0010] The storage mechanism includes a motor mounting box fixed to the middle of the outer side of the main positioning plate, and storage boxes fixed to both ends of the outer side of the main positioning plate. A dual-axis servo motor is fixedly connected inside the motor mounting box, and a storage roller is rotatably connected inside the storage box. One end of the storage roller is inserted into the motor mounting box and fixedly connected to the output shaft of the dual-axis servo motor. The top end of the storage rope extends into the storage box and is fixedly connected to the storage roller.

[0011] Furthermore, the main positioning plate, the secondary positioning plate, and the cold compress plate are all arc-shaped with an arc of 50-70 degrees.

[0012] Furthermore, the end of the storage rope is fixedly connected to a pin, the top of the pin is arc-shaped, the middle of the pin has a slot, and both ends of the sub-positioning plate have slots, with the pin and slots being compatible.

[0013] Furthermore, a self-locking limiting mechanism is fixedly connected to the outer side of the sub-positioning plate. The self-locking limiting mechanism includes a mounting box fixed to the outside of the slot. A locking post is provided in the middle of the mounting box. The top end of the locking post extends into the slot and is adapted to the slot. The outer side of the top end of the locking post is arc-shaped. The bottom end of the locking post passes through the mounting box and is fixedly connected to a pull ring. A limiting block is fixedly connected to the outer side of the middle part of the locking post. The bottom of the limiting block is fixedly connected to the mounting box by a first spring.

[0014] Furthermore, the cooling plate has multiple cylindrical liquid storage pipes inside, one end of the cooling plate is connected to a water pipe connector, and the multiple liquid storage pipes are connected end to end and connected to the water pipe connector through a circulation channel.

[0015] Furthermore, one end of the liquid storage pipe passes through the cold compress plate and is threadedly connected to an external threaded ring, and one end of the external threaded ring is fixedly connected to a sealing cap.

[0016] Furthermore, one end of the cold water circulation mechanism is connected to a circulating water pipe, and the end of the circulating water pipe is connected to a female water pipe connector. The female water pipe connector is compatible with the male water pipe connector. Both the female and male water pipe connectors have two pipes inside for circulating cold water. The surface of the cold water circulation mechanism is equipped with a display screen and a control panel. The interior of the cold water circulation mechanism is equipped with a pump body, a water tank, and a refrigeration mechanism.

[0017] Furthermore, multiple guide posts are fixedly connected to the outer side of the cold compress plate, and multiple through holes are opened in the middle of the main positioning plate. The guide posts pass through the through holes and are fixedly connected to anti-detachment blocks. A second spring is sleeved on the outer side of the guide posts, and the second spring is located between the main positioning plate and the cold compress plate.

[0018] Furthermore, the inner side of the cold compress plate is provided with a surface layer, an intermediate layer, and a contact layer in sequence.

[0019] Furthermore, the surface layer is a 3D honeycomb breathable layer, the middle layer is a graphene thermally conductive layer, and the contact layer is a medical-grade silicone layer.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. This invention achieves electric adjustment of the distance between the main positioning plate and the secondary positioning plate through a storage rope system driven by a dual-axis servo motor. The long-stroke storage rope and the arc-shaped positioning plate can fit different parts such as the arms, legs and waist, expanding the application range of traditional fixation devices. The long-stroke storage rope design eliminates the need for manual stretching, and the distance is precisely controlled by the motor, avoiding problems such as unstable fixation or excessive tightness caused by improper manual adjustment.

[0022] 2. This invention adds a pin and a self-locking limiting mechanism to achieve quick separation / fixation of the storage rope and the secondary positioning plate. When used on sensitive areas such as the calves and waist, it can be put on without taking off shoes or adjusting body position, which significantly improves the user experience.

[0023] 3. The present invention adopts a dual-mode design of "cold water circulation + ice pop" for the cold compress system and optimizes the liquid storage pipe structure. Connecting the cold water circulation mechanism can realize continuous low-temperature cold compress; inserting pre-packaged ice pops can facilitate temporary cooling when the patient is moving around, meeting the needs of different scenarios. The cylindrical liquid storage pipe design promotes uniform distribution of the refrigerant and improves the efficiency of cold compress. The sealed cap structure supports quick replacement of ice pops.

[0024] 4. In this invention, a spring buffer system and an anti-dislodgement guide structure are introduced between the main positioning plate and the cold compress plate. The second spring provides elastic buffering to avoid excessive local pressure caused by rigid fixation, which is especially suitable for patients with soft tissue injuries.

[0025] 5. The present invention uses a three-layer composite structure for the cold compress plate. The graphene layer achieves ultra-thin and efficient heat conduction, the 3D honeycomb structure accelerates air circulation, and takes into account both the cold compress efficacy and skin dryness. The medical silicone contact layer inhibits bacterial growth and its flexible texture reduces friction and irritation to the wound surface, reducing the risk of secondary damage. The structural design with decreasing hardness from the outside to the inside maximizes skin adhesion while ensuring support. Attached Figure Description

[0026] Figure 1This is a three-dimensional schematic diagram of the cold compress type swelling reduction and fixation device for orthopedic limb trauma of the present invention;

[0027] Figure 2 This is a three-dimensional schematic diagram of the main positioning plate, the secondary positioning plate, and the cold compress plate of the present invention;

[0028] Figure 3 This is a three-dimensional schematic diagram of the storage mechanism of the present invention;

[0029] Figure 4 This is a cross-sectional schematic diagram of the auxiliary positioning plate and the self-locking limiting mechanism of the present invention;

[0030] Figure 5 This is a cross-sectional schematic diagram of the cold-applied plate structure of the present invention;

[0031] Figure 6 This is an exploded view of the cold-applied plate structure of the present invention.

[0032] Reference numerals: 1. Main positioning plate; 2. Secondary positioning plate; 3. Cooling plate; 4. Cold water circulation mechanism; 6. Storage rope; 7. Storage mechanism; 8. Motor mounting box; 9. Dual-axis servo motor; 10. Storage box; 11. Storage roller; 12. Through hole; 13. Pin; 14. Slot; 15. Slot; 16. Self-locking limit mechanism; 17. Mounting box; 18. Locking post; 19. Pull ring; 20. Limiting block; 21. First spring; 2 2. Liquid storage pipe; 23. Sealing cap; 24. External threaded ring; 25. Circulation channel; 26. Water pipe male connector; 27. Guide post; 28. Anti-detachment block; 29. ​​Second spring; 30. Surface layer; 31. Intermediate layer; 32. Contact layer; 33. Circulating water pipe; 34. Water pipe female connector; 35. Display screen; 36. Control panel; 37. Temperature display panel; 38. Pressure sensor; 39. Temperature sensor; 40. Counterweight. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0034] Please see Figure 1-3A cold compress-type swelling reduction and fixation device for orthopedic limb trauma includes a main positioning plate 1, a secondary positioning plate 2, a cold compress plate 3, and a cold water circulation mechanism 4. The main positioning plate 1, secondary positioning plate 2, and cold compress plate 3 are all arc-shaped with an arc of 50-70 degrees. Rope channels are opened on both sides of the main positioning plate 1, and a storage rope 6 is installed inside the rope channel. A storage mechanism 7 is installed on the surface of the main positioning plate 1. The top end of the storage rope 6 is connected to the storage mechanism 7, and the bottom end of the storage rope 6 is connected to the secondary positioning plate 2. A counterweight 40 is fixedly connected to the middle of the outer side of the secondary positioning plate 2. When the injured area is located on the side, the main positioning plate 1 is fixed on the side to avoid the main positioning plate 1 generating rotational stress under the action of gravity, which would cause discomfort to the patient. Therefore, a counterweight 40 is set to offset the rotational stress and avoid the rotational stress pulling on the injured limb. The weight of the counterweight 40 can be considered based on the weight of the main positioning plate 1, the cold compress plate 3, and the weight after adding ice / water.

[0035] The storage mechanism 7 includes a motor mounting box 8 fixed to the middle of the outer side of the main positioning plate 1, and storage boxes 10 fixed to both ends of the outer side of the main positioning plate 1. A dual-axis servo motor 9 is fixedly connected inside the motor mounting box 8, and a storage roller 11 is rotatably connected inside the storage box 10. One end of the storage roller 11 is inserted into the motor mounting box 8 and fixedly connected to the output shaft of the dual-axis servo motor 9. The top end of the storage rope 6 extends into the storage box 10 and is fixedly connected to the storage roller 11.

[0036] A pressure sensor 38 and a temperature sensor 39 are fixedly connected to the inner wall of the cooling plate 3. The main positioning plate 1 has an independent power supply and a processor inside. The processor is used to control the operation of the dual-axis servo motor 9 and to receive the signal from the pressure sensor 38 to control the dual-axis servo motor 9 to stop running.

[0037] The surface of the main positioning plate 1 is provided with a temperature display panel 37 for displaying the measured temperature of the temperature sensor 39; the independent power supply can be a lithium battery, which is used to power the dual-axis servo motor 9, the pressure sensor 38 and the temperature sensor 39.

[0038] In this embodiment, the limb is placed between the main positioning plate 1 and the secondary positioning plate 2, and then the dual-axis servo motor 9 is activated. The dual-axis servo motor 9 drives the storage roller 11 to rotate, and the storage roller 11 winds the storage rope 6, shortening the exposed storage rope 6, thereby adjusting the distance between the main positioning plate 1 and the secondary positioning plate 2 to fix the limb. The storage rope 6 system driven by the dual-axis servo motor 9 realizes the electric adjustment of the distance between the main positioning plate 1 and the secondary positioning plate 2. The long-stroke storage rope 6 and the arc-shaped positioning plate can fit different parts such as the arm, leg and waist, expanding the application range of traditional fixation devices. The long-stroke storage rope 6 design does not require manual stretching. The distance is precisely controlled by the motor, and the pressure sensor 38 installed inside the cold compress plate 3 is used to monitor the body parts clamped between the cold compress plate 3 and the secondary positioning plate 2. A pressure threshold can be preset. If the pressure is greater than or equal to the threshold, the pressure sensor 38 transmits a signal to the processor, and the processor controls the dual-axis servo motor 9 to stop running, avoiding the problem of excessive tightness caused by improper manual adjustment.

[0039] A temperature sensor 39 is integrated inside the cooling plate 3 to provide real-time feedback on skin temperature. The real-time temperature is displayed on the temperature display panel 37 to guide operators in proper use. Example

[0040] Please see Figure 1 , 2 In embodiment 4, this embodiment is a further optimization based on embodiment 1. Specifically, the end of the storage rope 6 is fixedly connected to a pin 13, the top of the pin 13 is arc-shaped, and a slot 14 is opened in the middle of the pin 13. Both ends of the sub-positioning plate 2 are provided with slots 15, and the pin 13 is adapted to the slot 15. A self-locking limiting mechanism 16 is fixedly connected to the outside of the sub-positioning plate 2. The self-locking limiting mechanism 16 includes an installation box 17 fixed to the outside of the slot 15. A locking post 18 is provided in the middle of the installation box 17. The top of the locking post 18 extends into the slot 15 and is adapted to the slot 14. The outer side of the top of the locking post 18 is arc-shaped. The bottom of the locking post 18 passes through the installation box 17 and is fixedly connected to a pull ring 19. A limiting block 20 is fixedly connected to the outer side of the middle of the locking post 18. The bottom of the limiting block 20 is fixedly connected to the installation box 17 through a first spring 21.

[0041] In this embodiment, by pulling the pull ring 19, the pull ring 19 causes the locking pin 18 to leave the slot 14, and the pin 13 can be pulled out. During installation, the pin 13 is inserted into the slot 15. The pin 13 first pushes open the locking pin 18, and then enters the slot 15. When the slot 14 corresponds to the locking pin 18, the locking pin 18 is inserted into the slot 14 under the tension of the first spring 21, which limits the pin 13 and achieves the effect of self-locking.

[0042] By incorporating a detachable storage rope 6, the storage rope 6 can be separated from the secondary positioning plate 2. When the device is inconvenient to fix to the patient's limb, the pin 13 can be pulled out first to separate the storage rope 6 from the secondary positioning plate 2. When the device is placed on the patient's limb, the pin 13 can be inserted again for fixation. For example, when fixing to the lower leg, existing products require removing shoes to avoid contamination of the device, and the foot and leg must be kept horizontal before the device can be put through the foot. Similarly, when fixing to the ribs of the waist, it needs to be placed from the head down, which is very inconvenient. This product solves this problem by adding a pin 13 and a self-locking limiting mechanism 16, which enables quick separation / fixation of the storage rope 6 from the secondary positioning plate 2. When used on sensitive areas such as the lower leg and waist, it can be put on without removing shoes or adjusting body position, significantly improving the user experience. The secondary positioning plate 2 can be disassembled and cleaned or replaced independently, avoiding the maintenance difficulties caused by cleaning traditional fixation devices. Example

[0043] Please see Figure 1 and 5 This embodiment is a further optimization based on embodiment 2. Specifically, the cooling plate 3 has multiple cylindrical liquid storage pipes 22 inside. One end of the cooling plate 3 is connected to a water pipe male connector 26. The multiple liquid storage pipes 22 are connected end to end and connected to the water pipe male connector 26 through a circulation channel 25. One end of the liquid storage pipe 22 passes through the cooling plate 3 and is threaded with an external threaded ring 24. One end of the external threaded ring 24 is fixedly connected to a sealing cap 23. One end of the cold water circulation mechanism 4 is connected to a circulating water pipe 33, and the end of the circulating water pipe 33 is connected to a water pipe female connector. The female water pipe connector 34 and the male water pipe connector 26 are compatible. Both the female water pipe connector 34 and the male water pipe connector 26 are equipped with two pipes for the inlet and outlet of cold water for circulation. The surface of the cold water circulation mechanism 4 is equipped with a display screen 35 and a control panel 36. The internal components of the cold water circulation mechanism 4 include a pump body, a water tank, and a refrigeration mechanism. The refrigeration mechanism is a compression refrigeration cycle mechanism. The refrigerant (such as R134a) is compressed by the compressor. After the condenser releases heat, the refrigerant expands and evaporates to absorb heat. Then, the evaporator absorbs heat from the water. Finally, the low-temperature water is transported to the cooling plate by the water pump.

[0044] In this embodiment, the first method of use involves inserting the male connector 26 of the water pipe on the cooling plate 3 into the female connector 34 of the water pipe on the cold water circulation mechanism 4 to form a connection in the circulation pipeline. Then, the cold water circulation mechanism 4 is activated, and the water pump drives the cold water to flow in the pipeline, allowing the cold water to enter the liquid storage pipeline 22 of the cooling plate 3 for cooling. The second method of use involves unscrewing the sealing cap 23, inserting the prepared ice pop into the cylindrical liquid storage pipeline 22, and then screwing on the sealing cap 23. The ice pop needs to be packaged.

[0045] The cold compress system adopts a dual-mode design of "cold water circulation + ice pops" and optimizes the structure of the liquid storage pipe 22. Connecting to the cold water circulation mechanism 4 can achieve continuous low-temperature cold compresses; inserting pre-packaged ice pops facilitates temporary cooling when the patient is moving around, meeting the needs of different scenarios. The cylindrical liquid storage pipe 22 design promotes uniform distribution of the refrigerant and improves the efficiency of cold compresses. The sealing cap 23 structure supports quick replacement of ice pops, reducing equipment maintenance time. Example

[0046] Please see Figure 1 and 6 This embodiment is a further optimization based on embodiment 3. Specifically, multiple guide posts 27 are fixedly connected to the outer side of the cold compress plate 3, and multiple through holes 12 are opened in the middle of the main positioning plate 1. The guide posts 27 pass through the through holes 12 and are fixedly connected to the anti-detachment block 28. A second spring 29 is sleeved on the outer side of the guide posts 27. The second spring 29 is located between the main positioning plate 1 and the cold compress plate 3.

[0047] In this embodiment, by setting a second spring 29 between the main positioning plate 1 and the cold compress plate 3, and using guide posts 27 and anti-dislodgement blocks 28 for limiting, the cold compress plate 3 has a certain buffer space to avoid pressure sores caused by the device being fixed too tightly. The introduction of a spring buffer system and an anti-dislodgement guide structure between the main positioning plate 1 and the cold compress plate 3, the second spring 29 provides elastic buffering to avoid excessive local pressure caused by rigid fixation, which is especially suitable for patients with soft tissue injuries. The spring buffer can absorb some of the external impact and reduce the wear of mechanical parts. Example

[0048] Please see Figure 1 and 6 This embodiment is a further optimization based on embodiment 4. Specifically, the inner side of the cold compress plate 3 is provided with a surface layer 30, a middle layer 31, and a contact layer 32 in sequence. The surface layer 30 is a 3D honeycomb breathable layer, the middle layer 31 is a graphene thermal conductive layer, and the contact layer 32 is a medical silicone layer. The graphene is oxidized functional graphene, which is used to improve the ability to resist shear stress and avoid damage to the heat dissipation layer caused by changes in the contact layer 32.

[0049] In this embodiment, by setting up a 3D honeycomb breathable layer, a graphene thermal conductive layer, and a medical silicone layer distributed at the top, middle, and bottom, the 3D honeycomb layer achieves rapid moisture removal, the graphene thermal conductive layer achieves ultra-high thermal conductivity and ultra-thin thickness, and the medical silicone layer achieves skin-friendly, flexible, and antibacterial effects. The cooling plate 3 adopts a three-layer composite structure (3D honeycomb layer / graphene layer / medical silicone layer). The graphene layer achieves ultra-thin and efficient heat conduction, the 3D honeycomb structure accelerates air circulation, and balances cooling efficiency with skin dryness. The medical silicone contact layer inhibits bacterial growth, and its flexible texture reduces friction and irritation to the wound surface, reducing the risk of secondary damage. The structural design with decreasing hardness from the outside to the inside (honeycomb → graphene → silicone) maximizes skin adhesion while ensuring support.

[0050] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A cold compress type anti-swelling fixation device for orthopedic limb trauma, comprising a main positioning plate (1), a secondary positioning plate (2), a cold compress plate (3), and a cold water circulation mechanism (4), characterized in that: The main positioning plate (1) has rope channels on both sides, and a storage rope (6) is provided inside the rope channel. A storage mechanism (7) is installed on the surface of the main positioning plate (1). The top end of the storage rope (6) is connected to the storage mechanism (7), and the bottom end of the storage rope (6) is connected to the auxiliary positioning plate (2). The storage mechanism (7) includes a motor mounting box (8) fixed in the middle of the outer side of the main positioning plate (1) and storage boxes (10) fixed at both ends of the outer side of the main positioning plate (1). A dual-axis servo motor (9) is fixedly connected inside the motor mounting box (8), and a storage roller (11) is rotatably connected inside the storage box (10). One end of the storage roller (11) is inserted into the motor mounting box (8) and fixedly connected to the output shaft of the dual-axis servo motor (9). The top end of the storage rope (6) extends into the storage box (10) and is fixedly connected to the storage roller (11). The end of the storage rope (6) is fixedly connected to a pin (13). The top of the pin (13) is arc-shaped, and a slot (14) is opened in the middle of the pin (13). Slots (15) are opened at both ends of the sub-positioning plate (2). The pin (13) and the slot (15) are compatible. A self-locking limiting mechanism (16) is fixedly connected to the outer side of the sub-positioning plate (2). The self-locking limiting mechanism (16) includes an installation box (17) fixed to the outside of the slot (15). A locking post (18) is provided in the middle of the installation box (17). The top of the locking post (18) extends into the slot (15) and is adapted to the slot (14). The outer side of the top of the locking post (18) is arc-shaped. The bottom of the locking post (18) passes through the installation box (17) and is fixedly connected to a pull ring (19). A limiting block (20) is fixedly connected to the outer side of the middle of the locking post (18). The bottom of the limiting block (20) is fixedly connected to the installation box (17) through a first spring (21).

2. The cold compress type swelling reduction and fixation device for orthopedic limb trauma according to claim 1, characterized in that: The main positioning plate (1), the secondary positioning plate (2) and the cold compress plate (3) are all arc-shaped with an arc of 50-70 degrees.

3. The cold compress type swelling reduction and fixation device for orthopedic limb trauma according to claim 1, characterized in that: The cold compress plate (3) has multiple cylindrical liquid storage pipes (22) inside. One end of the cold compress plate (3) is connected to a water pipe connector (26). The multiple liquid storage pipes (22) are connected end to end and connected to the water pipe connector (26) through a circulation channel (25).

4. The cold compress type swelling reduction and fixation device for orthopedic limb trauma according to claim 3, characterized in that: One end of the liquid storage pipe (22) passes through the cold compress plate (3) and is threadedly connected to an external threaded ring (24), and one end of the external threaded ring (24) is fixedly connected to a sealing cap (23).

5. A cold compress type swelling reduction and fixation device for orthopedic limb trauma according to claim 3, characterized in that: One end of the cold water circulation mechanism (4) is connected to a circulating water pipe (33), and the end of the circulating water pipe (33) is connected to a female water pipe connector (34). The female water pipe connector (34) is compatible with the male water pipe connector (26). Both the female water pipe connector (34) and the male water pipe connector (26) are equipped with two pipes for circulating cold water. The surface of the cold water circulation mechanism (4) is equipped with a display screen (35) and a control panel (36). The interior of the cold water circulation mechanism (4) is equipped with a pump body, a water tank, and a refrigeration mechanism.

6. A cold compress type swelling reduction and fixation device for orthopedic limb trauma according to claim 1, characterized in that: Multiple guide posts (27) are fixedly connected to the outer side of the cold compress plate (3). Multiple through holes (12) are opened in the middle of the main positioning plate (1). The guide posts (27) pass through the through holes (12) and are fixedly connected to anti-detachment blocks (28). A second spring (29) is sleeved on the outer side of the guide posts (27). The second spring (29) is located between the main positioning plate (1) and the cold compress plate (3).

7. A cold compress type swelling reduction and fixation device for orthopedic limb trauma according to claim 1, characterized in that: The inner side of the cold compress plate (3) is provided with a surface layer (30), an intermediate layer (31), and a contact layer (32) in sequence.

8. A cold compress type swelling reduction and fixation device for orthopedic limb trauma according to claim 7, characterized in that: The surface layer (30) is a 3D honeycomb breathable layer, the middle layer (31) is a graphene thermal conductive layer, and the contact layer (32) is a medical silicone layer.

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