Negative pressure fracture fixing device for emergency treatment

Abstract

A negative pressure fracture fixing device for emergency treatment comprises a bottom plate elastically connected with a bearing plate through a reset piece; the piston cavities are formed in the bottom plate, slidable pistons are arranged in the piston cavities, piston rods are arranged at the top ends of the pistons, and the pistons are connected with the bearing plate through the piston rods; the detachable fastening belt is arranged at the top of the bearing plate, and a fastening air bag communicated with the piston cavity is arranged on the inner side of the fastening belt; the vertical grooves are symmetrically formed in the two sides of the bearing plate, a side protection piece is arranged in each vertical groove, and side air bags communicated with the piston cavities are arranged on the inner sides of the side protection pieces; the device is novel in structure, ingenious in conception and capable of adjusting the fastening force in a self-adaptive mode, the heavier a patient is, the larger the downward moving distance of the bearing plate is, the larger the amount of compressed gas of the piston is, the more gas obtained by the fastening air bag is, the larger the expansion degree is, the higher the fastening force on the limbs of the patient is, self-adaptive adjustment can be achieved, and the applicability is good.

Description

Technical Field

[0001] This invention relates to fixation devices, specifically a negative pressure fracture fixation device for emergency treatment. Background Technology

[0002] In the field of emergency medicine, fractures are a common type of trauma. Timely and effective immobilization of the fracture site is crucial for preventing secondary injury, reducing patient suffering, and ensuring the smooth progress of subsequent treatment. However, existing fracture fixation devices have many shortcomings in practical applications.

[0003] Traditional fracture fixation devices, such as plaster casts and splints, while widely used, suffer from cumbersome operation and inconvenient adjustment. Plaster casts require on-site preparation and shaping, which is time-consuming, and once formed, they are difficult to adjust and cannot be optimized according to real-time changes in the patient's limb. Splint fixation relies on the tightness of the bandage wrapping; if wrapped too loosely, the fixation effect is poor, and the fracture site may still shift; if wrapped too tightly, it will affect the patient's limb's blood circulation, causing discomfort such as swelling and numbness, and may even lead to tissue necrosis.

[0004] While some pneumatic immobilization devices address convenience issues, the inflation process often requires an external air source. In complex emergency situations, especially in the field or at accident scenes where an external air source is unavailable, this makes rapid and effective immobilization difficult. Furthermore, existing pneumatic immobilization devices offer limited pressure adjustment and cannot automatically adjust the tightening force based on the patient's weight or limb condition, potentially leading to insecure immobilization or excessive pressure that could damage the limb.

[0005] Meanwhile, existing fracture fixation devices are insufficient in lateral protection and have limited all-around protection capabilities for the fracture site, failing to adequately meet the needs for stable support and protection of the fracture site during emergency treatment. Therefore, there is an urgent need for an emergency fracture fixation device that can adaptively adjust the tightening force, is easy to operate, provides comprehensive protection, and can be used stably in various complex environments. Summary of the Invention

[0006] In view of the above situation and to overcome the defects of the prior art, the present invention provides a negative pressure fracture fixation device for emergency treatment that can be adaptively adjusted and has good applicability. The heavier the patient, the greater the downward distance of the support plate, the more gas the piston compresses, the more gas the tightening airbag obtains, the greater the degree of expansion, and the stronger the tightening force on the patient's limb. This effectively solves the above problems.

[0007] To achieve the above objectives, the present invention provides the following technical solution: The present invention includes:

[0008] The base plate is elastically connected to the support plate via a reset component;

[0009] At least one piston chamber is provided in the base plate, and a slidable piston is provided in the piston chamber. A piston rod is provided at the top of the piston, and the piston is connected to the support plate through the piston rod.

[0010] A detachable fastening band is provided on the top of the support plate, and a fastening airbag communicating with the piston chamber is provided on the inner side of the fastening band;

[0011] The vertical grooves are symmetrically arranged on both sides of the bearing plate. Each vertical groove is provided with a side guard, and the inner side of the side guard is provided with a side airbag that communicates with the piston chamber.

[0012] When the support plate is pressed down, the reset component generates a reset elastic force and drives the piston to slide in the piston chamber through the piston rod, causing the fastening airbag and the side airbag to expand.

[0013] According to the above technical solution: the reset component is a helical spring, and its upper and lower ends are respectively fixedly connected to the lower surface of the bearing plate and the upper surface of the base plate.

[0014] According to the above technical solution: the side guard is connected to the base plate through a support column, and the support column passes through a through hole provided on the bearing plate.

[0015] According to the above technical solution: the fastening airbag is set in a cavity opened in the fastening band, and the side airbag is set in a side groove opened in the side guard.

[0016] According to the above technical solution: a pressure valve is installed in the pipe that connects the fastening band and the piston chamber. The pressure valve is designed to be opened and inflated when a preset pressure is reached.

[0017] According to the above technical solution: the base plate is provided with lifting handles on both sides, and the lifting handles are integrally formed with the base plate.

[0018] According to the above technical solution: the lower surface of the bearing plate is provided with at least two guide posts, and the upper surface of the base plate is provided with a guide sleeve that slides with the guide posts, and the axis of the guide sleeve is parallel to the direction of piston rod movement.

[0019] According to the above technical solution: the fastening band is detachably connected to the top of the support plate by Velcro or buckle, the width of the fastening band is 5-8cm and the surface is provided with anti-slip texture.

[0020] According to the above technical solution: the piston chamber is provided with three chambers arranged in a ring array, and each piston chamber is simultaneously connected to the fastening airbag and the side airbag through the air distribution pipeline.

[0021] According to the above technical solution: a pressure balance valve is provided at the bottom of the piston chamber, and the pressure balance valve is a one-way air intake valve.

[0022] Beneficial effects: Adaptive adjustment of fastening force: The heavier the patient, the greater the downward distance of the support plate, the more gas the piston compresses, the more gas the fastening airbag receives, the greater the degree of expansion, and the stronger the fastening force on the patient's limb. It can achieve adaptive adjustment and has good applicability.

[0023] Provides lateral protection and support: When the load-bearing plate is compressed and moves downward, the side guards extend from the vertical groove to form a lateral protection structure. At the same time, the side airbags inflate and expand to provide support and protection for the patient's limbs from the side, further stabilizing the fracture site and preventing displacement or secondary injury at the fracture site.

[0024] Stable operation: The piston chamber is equipped with a pressure balance valve (one-way air inlet valve) at the bottom, which can maintain the pressure balance in the chamber and ensure the stable operation of the device;

[0025] Easy to operate and transport: The base plate is integrally molded on both sides and has a lifting handle, which makes it easy for medical staff to transport and operate the device during emergency treatment;

[0026] Easy to adjust and remove: The fastening straps are detachably connected to the top of the support plate via Velcro or buckles, making it easy to adjust and remove them according to the patient's limb condition;

[0027] To ensure the stability of the load-bearing plate movement: The lower surface of the load-bearing plate is equipped with guide posts that slide in conjunction with the guide sleeves on the upper surface of the base plate, ensuring the stability and guidance of the load-bearing plate's vertical movement. Attached Figure Description

[0028] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0029] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0030] Figure 2 This is a three-dimensional structural diagram of the second perspective of the present invention;

[0031] Figure 3 This is a three-dimensional structural diagram of the fastening band of the present invention;

[0032] Figure 4 This is the front view of the present invention;

[0033] Figure 5 This is a cross-sectional view of the present invention;

[0034] Figure 6 This is a BB cross-sectional view of the present invention;

[0035] Figure 7 This is a side view of the present invention;

[0036] Figure 8 This is a cross-sectional view of the present invention (FF).

[0037] The following are the labels in the diagram: 1. Base plate; 11. Reset component; 12. Piston chamber; 13. Piston; 14. Piston rod; 2. Bearing plate; 21. Fastening band; 211. Cavity; 212. Fastening airbag; 22. Vertical groove; 23. Side guard; 24. Support column; 25. Side groove; 26. Side airbag; 27. Through hole; 3. Lifting handle. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-8 The specific embodiments of the present invention will be described in further detail below.

[0039] Example 1, by Figure 1-8 The present invention provides a negative pressure fracture fixation device for emergency treatment, comprising a base plate 1, a repositioning component 11, a piston chamber 12, a piston 13, a piston rod 14, a bearing plate 2, a fastening strap 21, a cavity 211, a fastening airbag 212, a vertical groove 22, a side guard 23, a support column 24, a side groove 25, a side airbag 26, a through hole 27, and a lifting handle 3;

[0040] The base plate 1 is elastically connected to the support plate 2 via a reset member 11;

[0041] At least one piston chamber 12 is provided in the base plate 1, and a slidable piston 13 is provided in the piston chamber 12. A piston rod 14 is provided at the top of the piston 13, and the piston 13 is connected to the support plate 2 through the piston rod 14.

[0042] A detachable fastening band 21 is provided on the top of the support plate 2, and a fastening airbag 212 communicating with the piston chamber 12 is provided on the inner side of the fastening band 21.

[0043] Vertical grooves 22 are symmetrically arranged on both sides of the bearing plate 2. Each vertical groove 22 is provided with a side guard 23. The side guard 23 is provided with a side airbag 26 that communicates with the piston chamber 12.

[0044] When the support plate 2 is pressed down, the support plate 2 drives the piston 13 to slide in the piston chamber 12 through the piston rod 14, causing the fastening airbag 212 and the side airbag 26 to expand.

[0045] Base plate 1: Serving as the basic support component of the device, it is elastically connected to the bearing plate 2 via a reset component 11, providing a stable support foundation. The base plate 1 has integrally formed lifting handles 3 on both sides, facilitating the movement and operation of the device by medical personnel during emergency treatment.

[0046] Reset component 11: A helical spring is used, with its upper and lower ends firmly fixed to the lower surface of the support plate 2 and the upper surface of the base plate 1, respectively. When the support plate 2 is pressed down, the helical spring generates a reset force, resetting the device when it is not in use.

[0047] Piston chamber 12 and piston assembly: The base plate 1 has three or more piston chambers 12 arranged in a circular array, and each piston chamber 12 is equipped with a sliding piston 13. A piston rod 14 is connected to the top of the piston 13, and the piston rod 14 is connected to the support plate 2. When the support plate 2 is subjected to downward force, the piston 13 slides within the piston chamber 12, compressing the gas and transmitting pressure. A pressure balance valve (one-way inlet valve) is provided at the bottom of the piston chamber 12 to maintain the pressure balance within the chamber and ensure stable operation of the device.

[0048] Support plate 2: Supports the patient's limb, with a detachable fastening strap 21 on its upper surface and vertical grooves 22 symmetrically distributed on both sides. The lower surface of the support plate 2 is provided with at least two guide posts, which slide in cooperation with the guide sleeve on the upper surface of the base plate 1. The axis of the guide sleeve is parallel to the movement direction of the piston rod 14, ensuring the stability and guidance of the up and down movement of the support plate 2.

[0049] Fastening band 21 and fastening airbag 212: The fastening band 21 is 5-8cm wide and has an anti-slip texture on its surface. It can be detachably connected to the top of the support plate 2 via Velcro or buckles, making it easy to adjust and remove according to the patient's limb condition. The inner side of the fastening band 21 has a cavity 211, in which the fastening airbag 212 is installed. The fastening airbag 212 is connected to the piston cavity 12 via a pipe. A pressure valve is installed in the pipe. When the pressure reaches a preset value, the pressure valve opens, and the fastening airbag 212 inflates to fasten the patient's limb. The faster the patient weighs, the larger the expansion of the fastening airbag 212 becomes, resulting in better fastening force. It is adaptively adjustable and has good applicability.

[0050] Side guards 23 and side airbags 26: Side guards 23 are protective plates or guardrails, symmetrically arranged in the vertical grooves 22 on both sides of the support plate 2. They are connected to the base plate 1 through support columns 24, which pass through the through holes 27 on the support plate 2. Side guards 23 have inner grooves 25, in which side airbags 26 are installed. Side airbags 26 are also connected to the piston chamber 12. When the support plate 2 is pressed down, the side guards 23 extend from the vertical grooves 22, forming lateral protection. Simultaneously, the side airbags 26 inflate, providing support and protection for the patient's limbs from the side.

[0051] Working principle: When the patient's fractured limb is placed on the support plate 2, the weight of the limb exerts downward pressure on the support plate 2, causing it to move downward along the guide post. During the downward movement of the support plate 2, the reset element 11 (coil spring) is compressed, and the spring generates a reverse reset force. This reset force returns the device to its initial state when it is not in use.

[0052] Because the piston chamber 12 has three or more gas chambers arranged in a ring array and a pressure balance valve (one-way air intake valve) at the bottom, the gas in the piston chamber 12 is compressed when the piston 13 moves downward. The compressed gas is then transported to the fastening airbag 212 and the side airbag 26 via gas distribution pipes. A pressure valve is installed in the pipe containing the fastening airbag 212, and this pressure valve is set with a specific opening pressure value. As the support plate 2 continues to move downward, the pressure generated by the gas compressed by the piston 13 gradually increases. When the pressure reaches the preset value of the pressure valve, the pressure valve opens, and gas enters the fastening airbag 212, causing it to inflate.

[0053] The side guard 23 was originally housed in the vertical grooves 22 on both sides of the bearing plate 2. During the downward movement of the bearing plate 2, the side guard 23 extends out from the vertical grooves 22 through the action of the support column 24, forming a lateral protection structure.

[0054] Meanwhile, the heavier the patient, the greater the downward distance of the support plate 2, and the greater the upward distance of the piston 13 within the piston chamber 12. This results in a larger volume of compressed gas, more gas entering the clamping airbag 212, leading to greater expansion and stronger clamping force on the patient's limb, achieving adaptive adjustment. Similarly, the side airbag 26 is also connected to the piston chamber 12. Gas enters the side airbag 26 under pressure, causing it to inflate and provide lateral support and protection for the patient's limb, further stabilizing the fracture site and preventing displacement or secondary injury. Throughout the process, the air pressure balance valve (one-way air intake valve) ensures stable air pressure within the piston chamber 12, guaranteeing continuous and reliable operation of the device.

[0055] Beneficial effects: Adaptive adjustment of fastening force: The heavier the patient, the greater the downward distance of the support plate, the more gas the piston compresses, the more gas the fastening airbag receives, the greater the degree of expansion, and the stronger the fastening force on the patient's limb. It can achieve adaptive adjustment and has good applicability.

[0056] Provides lateral protection and support: When the load-bearing plate is compressed and moves downward, the side guards extend from the vertical groove to form a lateral protection structure. At the same time, the side airbags inflate and expand, providing support and protection for the patient's limbs from the side, further stabilizing the fracture site and preventing displacement or secondary injury at the fracture site.

[0057] Stable operation: The piston chamber is equipped with a pressure balance valve (one-way air inlet valve) at the bottom, which can maintain the pressure balance in the chamber and ensure the stable operation of the device.

[0058] Easy to operate and transport: The base plate is integrally molded on both sides and has a lifting handle, which makes it easy for medical staff to transport and operate the device during emergency treatment.

[0059] Easy to adjust and remove: The fastening straps are detachably connected to the top of the support plate via Velcro or buckles, making it easy to adjust and remove them according to the patient's limb condition.

[0060] To ensure the stability of the load-bearing plate movement: The lower surface of the load-bearing plate is equipped with guide posts that slide in conjunction with the guide sleeves on the upper surface of the base plate, ensuring the stability and guidance of the load-bearing plate's vertical movement.

[0061] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A negative pressure fracture fixation device for emergency treatment, characterized in that, include: The base plate (1) is elastically connected to the bearing plate (2) through a reset member (11); At least one piston chamber (12) is provided in the base plate (1), and a slidable piston (13) is provided in the piston chamber (12). A piston rod (14) is provided at the top of the piston (13), and the piston (13) is connected to the support plate (2) through the piston rod (14). A detachable fastening band (21) is provided on the top of the support plate (2), and a fastening airbag (212) communicating with the piston chamber (12) is provided on the inner side of the fastening band (21). Vertical grooves (22) are symmetrically arranged on both sides of the bearing plate (2). Each vertical groove (22) is provided with a side guard (23). The side guard (23) is provided with a side airbag (26) communicating with the piston chamber (12). When the support plate (2) is pressed down, the support plate (2) drives the piston (13) to slide in the piston chamber (12) through the piston rod (14), causing the fastening airbag (212) and the side airbag (26) to expand.

2. The negative pressure fracture fixation device for emergency treatment according to claim 1, characterized in that: The reset component (11) is a helical spring, with its upper and lower ends fixedly connected to the lower surface of the bearing plate (2) and the upper surface of the base plate (1), respectively.

3. The emergency negative pressure fracture fixation device according to claim 2, characterized in that: The side guard (23) is connected to the base plate (1) through the support column (24), and the support column (24) passes through the through hole (27) provided on the bearing plate (2).

4. The negative pressure fracture fixation device for emergency treatment according to claim 3, characterized in that: The fastening airbag (212) is disposed in the cavity (211) opened in the fastening band (21), and the side airbag (26) is disposed in the side groove (25) opened in the side guard (23).

5. The emergency negative pressure fracture fixation device according to claim 4, characterized in that: A pressure valve is installed in the pipe connecting the fastening band (21) and the piston chamber (12). The pressure valve is configured to open and inflate when a preset pressure is reached.

6. The negative pressure fracture fixation device for emergency treatment according to claim 5, characterized in that: The base plate (1) is provided with lifting handles (3) on both sides, and the lifting handles (3) are integrally formed with the base plate (1).

7. The negative pressure fracture fixation device for emergency treatment according to claim 1, characterized in that: The lower surface of the bearing plate (2) is provided with at least two guide posts, and the upper surface of the base plate (1) is provided with a guide sleeve that slides with the guide posts. The axis of the guide sleeve is parallel to the movement direction of the piston rod (14).

8. The negative pressure fracture fixation device for emergency treatment according to claim 1, characterized in that: The fastening band (21) is detachably connected to the top of the support plate (2) by Velcro or buckle. The fastening band (21) is 5-8cm wide and has anti-slip texture on its surface.

9. The negative pressure fracture fixation device for emergency treatment according to claim 8, characterized in that: The piston chamber (12) has three chambers arranged in a ring array. Each piston chamber (12) is connected to the fastening airbag (212) and the side airbag (26) through the air distribution pipeline.

10. The negative pressure fracture fixation device for emergency treatment according to claim 9, characterized in that: The bottom of the piston chamber (12) is provided with a pressure balance valve, which is a one-way air intake valve.

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