Compression device for wound hemostasis in emergency trauma surgery department

Abstract

The invention belongs to the technical field of compression hemostasis instruments, and discloses an emergency trauma surgery wound hemostasis compression device which comprises a base and an inflator pump, the base is connected with a connecting seat, the connecting seat is connected with a compression plate, a pressure prompt assembly and a compression time control assembly, the compression plate is connected with a compression air bag, and the pressure prompt assembly comprises a first box body. The first box body is connected with a fixed cylinder, a variable resistance block, a resistor body and a prompter, the fixed cylinder is connected with an air guide pipe and a piston rod group, and the variable resistance block is connected with a second spring; the compression time control assembly comprises a pressure relief pipe with a side hole and a second box body, the second box body is connected with a control rotating shaft, a spring assembly and a rack, the control rotating shaft is connected with a gear, and the rack is connected with a control cylinder. The compression plate and the compression air bag are used for conducting compression hemostasis on the wound, the pressure prompt assembly and the compression time control assembly are used for displaying / controlling the pressure / compression time on the wound, and therefore accurate and scientific compression hemostasis is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of compression hemostasis devices, specifically a compression device for stopping bleeding in emergency trauma surgery wounds. Background Technology

[0002] In clinical practice of emergency trauma surgery, rapid and effective control of wound bleeding is a crucial step. Especially for active bleeding on the body surface or proximal limbs, timely application of appropriate external pressure for hemostasis can not only reduce blood loss and the risk of shock, but also buy valuable time for subsequent treatment.

[0003] Currently, commonly used external compression hemostasis methods in clinical practice mainly rely on manual pressure from medical staff or the use of pressure bandages. While manual pressure is direct, it is difficult to maintain a stable and appropriate pressure for extended periods, resulting in significant physical exertion for medical personnel and making it difficult to sustain during patient transport. Existing pressure bandages (such as inflatable tourniquets or bandages) alleviate the problem of prolonged and stable pressure hemostasis to some extent, but the application pressure and duration of pressure application rely heavily on experience, hindering rapid and accurate hemostasis in clinical practice. Specifically, insufficient pressure may lead to incomplete hemostasis, delaying treatment; excessive pressure can easily cause compressive damage to nerves, blood vessels, muscles, and other tissues, even leading to serious complications such as compartment syndrome. Insufficient pressure duration fails to effectively stop bleeding, while excessive pressure duration also increases tissue ischemia and necrosis, leading to serious complications such as compartment syndrome and nerve paralysis. Summary of the Invention

[0004] This invention aims to provide a compression device for wound hemostasis in emergency trauma surgery. It utilizes a compression plate and a compression balloon to apply pressure to the wound for hemostasis. A pressure indicator displays the pressure applied to the wound, and a spring-loaded component controls the compression time, quantifying both the pressure and the compression duration to ensure precise and scientific hemostasis. This invention solves the problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An emergency trauma surgery wound hemostasis compression device includes a base and an air pump. The base is connected to a connecting seat, the connecting seat is connected to a compression plate, and the compression plate is connected to a compression airbag. The air pump communicates with the compression airbag and controls its inflation state. The compression plate is also connected to a pressure indicator component and a compression time control component. The pressure indicator component includes a first housing connected to the compression plate, the first housing being connected to a fixed cylinder, a resistor, and an indicator. The fixed cylinder is fixedly connected to the first housing and communicates with the compression airbag through an air duct. A piston rod assembly is slidably and sealingly connected to the inner side of the fixed cylinder. A variable resistance block is connected to the end of the piston rod assembly away from the air duct. The variable resistance block slides against the resistor, and the end of the variable resistance block away from the piston rod assembly is connected to a first... Two springs are connected to the inner wall of the first housing. The indicator is electrically connected to the resistor and the variable resistor block and displays their relative positions. The pressure time control assembly includes a pressure relief pipe and a second housing. The pressure relief pipe is connected to the pressure airbag and has a side hole. The second housing is connected to a control shaft and a spring assembly. The control shaft is rotatably connected to the second housing and connected to the spring body of the spring assembly. The control shaft is also fixedly connected to a gear. The gear meshes with a rack that is slidably connected to the second housing. The rack is fixedly connected to a control cylinder that is slidably sealed on the outside of the pressure relief pipe. When the side hole is located inside the control cylinder, the side hole is sealed and blocked. When the side hole is located outside the control cylinder, the side hole communicates with the outside and releases the gas inside the pressure airbag.

[0007] Furthermore, the connecting seat and the base are connected by an angle adjustment assembly. The angle adjustment assembly includes a connecting cylinder fixedly connected to the base. The inner side of the connecting cylinder is provided with an internal spline and a blanking portion. The connecting seat is provided with a connecting shaft. The outer side of the connecting shaft is provided with an external spline that cooperates with the internal spline. The circumferential length of the external spline is shorter than the length of the blanking portion. When the external spline and the internal spline mesh with each other, the connecting seat and the base are circumferentially locked. When the external spline is entirely located in the blanking portion, the circumferential angle between the connecting seat and the base is adjustable.

[0008] Furthermore, the blanking portion is located on the lower side of the inner spline portion, and the connecting shaft slides through the connecting cylinder; a first spring is sleeved on the outer side of the connecting shaft, and the two ends of the first spring are respectively connected to the end face of the outer spline and the end face of the blanking portion away from the inner spline, and the length of the first spring is not shorter than the length of the blanking portion.

[0009] Furthermore, the pressure plate and the connecting seat are connected by a height adjusting bolt, the bolt body of the height adjusting bolt is threadedly connected to the connecting seat, and the pressure plate is rotatably connected to the height adjusting bolt.

[0010] Furthermore, the pressure plate is an arc-shaped plate, the height adjustment bolt is connected to the outer side of the arc surface of the pressure plate, and the pressure airbag is detachably connected to the inner side of the arc surface of the pressure plate; the connecting cylinder is detachably connected to a fixing plate located on the lower side of the pressure plate, the fixing plate is also an arc-shaped plate, and the inner sides of the arc surfaces of the pressure plate and the fixing plate are arranged opposite each other in a "()" shape.

[0011] Furthermore, the connecting seat has sliders slidably connected to both sides of the height adjusting bolt, and the sliders are rotatably connected to guide rods. The end of the guide rod away from the slider is rotatably connected to the pressure plate.

[0012] Furthermore, a hemostatic sponge is detachably connected to the side of the compression airbag away from the compression plate, and the hemostatic sponge is made by chemically cross-linking chitosan and graphene oxide, and obtained by freeze-drying.

[0013] Furthermore, both the air guide pipe and the pressure relief pipe are connected to a control valve to control their conduction state; the pressure relief pipe is uniformly provided with a plurality of side holes, and the diameter of the plurality of side holes gradually increases from the side of the control valve to the side away from the control valve.

[0014] Furthermore, both the first and second housings are provided with sliding grooves on their inner sides, and both the variable resistance block and the rack are provided with protrusions that cooperate with the sliding grooves, with the protrusions slidably disposed on the inner side of the sliding grooves.

[0015] Furthermore, the outer side of the second housing is engraved with angle markings, and the control shaft is fixedly connected to a control knob located on the outer side of the second housing. The control knob is provided with an indicator arrow that cooperates with the angle markings.

[0016] The principles and beneficial effects of the technical solution:

[0017] 1. This invention provides a compression device for wound hemostasis in emergency trauma surgery, comprising a base and an air pump. A connecting seat is connected to the base, and a compression plate is connected to the connecting seat. The compression plate is connected to a compression airbag. The compression plate / compression airbag is placed above the wound. The air pump inflates the compression airbag, which applies stable pressure to the wound. The compression plate is also connected to a pressure indicator component and a compression time control component to display / control the pressure magnitude / compression time on the wound. The fixed cylinder of the pressure indicator component is connected to the compression airbag via an air duct. The air pressure inside the compression airbag pushes a piston rod assembly to move against the elastic force of a second spring. The piston rod assembly drives a variable resistor block to slide on a resistive element, changing the resistance value of the indicator, resistive element, and resistive block connected in the circuit (its principle is the same as that of a sliding rheostat). The indicator (such as a voltmeter, LED indicator, or digital display) displays the corresponding pressure value or level in real time, achieving intuitive and quantitative display of the compression pressure. This allows medical personnel to accurately set and monitor the pressure during the compression hemostasis process, avoiding excessive or insufficient pressure. The pressure time control component's control shaft is connected to the mainspring body of the mainspring assembly. Rotating the control shaft winds up the mainspring body to store energy. Simultaneously, a gear drives a rack and its fixed control cylinder to move away from the side holes, sealing all side holes inside the control cylinder and maintaining the pressure bladder's inflation. Subsequently, the mainspring body slowly releases its stored energy, causing the control shaft to rotate in the opposite direction. The gear drives the rack and control cylinder to gradually move back. When the control cylinder moves to the point where the side holes are exposed, the gas inside the pressure bladder is slowly released through the pressure relief pipe and side holes, gradually relieving the pressure. In other words, the pressure time control component can set different pressure maintenance times by controlling the initial rotation angle of the control shaft (corresponding to the amount of energy stored in the mainspring), achieving precise and automatic control of the pressure time and ensuring the scientific and consistent duration of hemostasis.

[0018] 2. This invention provides a compression device for hemostasis of wounds in emergency trauma surgery. The connecting seat and base are connected by an angle adjustment component. The connecting cylinder between the connecting seat and the angle adjustment component, through the engagement of the inner spline, outer spline, and blanking portion, combined with a first spring, enables rapid adjustment and locking of the angle between the connecting seat and the base. Pressing down on the connecting seat disengages the outer spline from the inner spline and into the blanking portion, allowing free rotation to adjust the angle of the compression plate to suit different wound locations. Upon release, under the elastic force of the first spring, the outer spline re-engages with the inner spline, achieving circumferential locking. The operation is simple and quick, and it improves the device's adaptability to different body positions and wound locations.

[0019] 3. This invention provides a compression device for hemostasis of wounds in emergency trauma surgery. The compression plate is connected to the connecting seat by a height adjustment bolt. The vertical height of the compression plate relative to the connecting seat can be finely adjusted by the height adjustment bolt. Combined with the stable support structure formed by the sliders and guide rods on both sides, the stability of the compression plate during height adjustment is ensured, and deviation is avoided. The arc-shaped compression plate design can better conform to the curvature of the limb, improving the uniformity and comfort of the compression. The fixing plate, which is in the shape of "()" with the compression plate, can clamp and fix the limb, further expanding the scope of application and improving the hemostatic effect of compression. The side of the compression airbag that contacts the wound is provided with a hemostatic sponge composed of chitosan and graphene oxide. Chitosan has good biocompatibility, antibacterial properties and the ability to promote erythrocyte adsorption and aggregation, while graphene oxide has excellent platelet adhesion and activation properties. The sponge material formed by the two can synergistically promote the rapid formation of blood clots and enhance their strength, thereby enhancing the local biochemical hemostatic effect on the basis of physical compression, achieving rapid, effective and safe hemostasis.

[0020] 4. The present invention provides a compression device for wound hemostasis in emergency trauma surgery, wherein both the air inlet tube and the pressure relief tube are connected to control valves, so that the pressure indication component and the compression time control component can be disabled, one component can be operated, or both components can be operated simultaneously to meet different clinical needs; multiple side holes with gradually increasing diameters are provided on the pressure relief tube, and combined with the movement of the control cylinder, stepwise or gradual pressure relief of the compression balloon can be achieved, avoiding the bleeding rebound that may be caused by sudden pressure drop, which is more in line with the clinical requirements of physiological hemostasis.

[0021] 5. The present invention provides a compression device for hemostasis of wounds in emergency trauma surgery. Slide grooves are formed on the first and second housings. Protrusions are connected to the variable resistance block and the rack, which slide within the slider. These protrusions guide and limit the relative movement of the variable resistance block relative to the resistive element and the control cylinder relative to the pressure relief pipe, ensuring uniformity and stability of the relative motion and thus guaranteeing the functionality of the entire device. An angle indicator is provided on the outside of the second housing, and a control knob with an indicator arrow is provided on the control shaft. Through the indicator arrow and angle indicator, the setting and ending times of the compression time control component can be intuitively known, further improving the accuracy of time control. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a compression device for wound hemostasis in emergency trauma surgery according to the present invention;

[0023] Figure 2 This is a side view of a compression device for stopping bleeding in emergency trauma surgery according to the present invention;

[0024] Figure 3 for Figure 2Sectional view of AA;

[0025] Figure 4 This is a front view of a compression device for stopping bleeding in emergency trauma surgery according to the present invention;

[0026] Figure 5 for Figure 4 Sectional view of BB;

[0027] Figure 6 for Figure 4 Sectional view of CC;

[0028] Figure 7 for Figure 4 A sectional view of DD.

[0029] The names of the corresponding labels in the attached diagram are:

[0030] 1. Base, 2. Connecting seat, 3. Pressure plate, 4. Pressure airbag, 5. Angle adjustment assembly, 6. Height adjustment bolt, 7. Pressure indicator assembly, 8. Pressure time control assembly, 9. Slider, 10. Guide rod, 11. Connecting cylinder, 12. First spring, 13. Air guide pipe, 14. First housing, 15. Fixed cylinder, 16. Piston rod assembly, 17. Resistor, 18. Variable resistance block, 19. Second spring, 20. Second housing, 21. Pressure relief pipe, 22. Side hole, 23. Control cylinder, 24. Control shaft, 25. Spring assembly, 26. Gear, 27. Rack, 28. Fixed plate. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0032] like Figures 1 to 7 As shown, an emergency trauma surgery wound hemostasis compression device includes a base 1. The base 1 is connected to a connecting seat 2 via an angle adjustment assembly 5. The angle adjustment assembly 5 includes a connecting cylinder 11 fixedly connected to the base 1. The upper part of the inner side of the connecting cylinder 11 is provided with an internal spline, and the lower part is a smooth blank part. The lower end of the connecting seat 2 is provided with a connecting shaft. The outer side of the connecting shaft is provided with an external spline that cooperates with the internal spline. The axial length of the external spline is shorter than the axial length of the blank part. The connecting shaft slides through the connecting cylinder 11 and... A first spring 12 is fitted on its outer side, with its two ends abutting against the upper end face of the outer spline and the lower end face of the blank part, respectively. Under normal circumstances, the elastic force of the first spring 12 causes the outer spline to mesh with the inner spline, and the connecting seat 2 and the base 1 are circumferentially locked. When the angle needs to be adjusted, the connecting seat 2 is pressed down to overcome the elastic force of the first spring 12, so that the outer spline moves down to the blank part. Then the connecting seat 2 can be rotated to the required angle. After being released, the outer spline and the inner spline re-mesh under the action of the first spring 12, locking the connecting seat 2 and the base 1.

[0033] The connecting seat 2 is connected to a height adjusting bolt 6 via a thread. The lower end of the height adjusting bolt 6 is rotatably connected to a pressure plate 3. The connecting seat 2 is symmetrically connected to sliders 9 on both sides of the height adjusting bolt 6. Each slider 9 is rotatably connected to the upper side of the pressure plate 3 via a guide rod 10, forming a stable support structure. Rotating the height adjusting bolt 6 can drive the pressure plate 3 to rise and fall smoothly to adapt to different clinical needs. Among them, the compression plate 3 is an arc-shaped plate, and the connecting cylinder 11 is detachably connected to the fixing plate 28 located on the lower side of the compression plate 3. The fixing plate 28 is also an arc-shaped plate, and the inner sides of the arc surfaces of the compression plate 3 and the fixing plate 28 are arranged in a vertical "()" shape. The inner side of the arc surface of the compression plate 3 can be detachably connected to the compression airbag 4. The compression airbag 4 is connected to an independent inflation pump (not shown in the figure) through a pipeline. The side of the compression airbag 4 facing the wound can be detachably attached with a hemostatic sponge. The hemostatic sponge is a composite sponge material made by chemical cross-linking chitosan and graphene oxide and freeze-drying process, which has good hemostatic and antibacterial properties.

[0034] The connecting seat 2 is connected to a pressure indication component 7. The pressure indication component 7 includes a first housing 14 fixed to the outside of the pressure plate 3. A fixed cylinder 15 is fixed inside the first housing 14. The fixed cylinder 15 is connected to the inside of the pressure airbag 4 through an air guide pipe 13. A control valve is provided on the air guide pipe 13. A piston rod assembly 16 is slidably and sealed inside the fixed cylinder 15. A variable resistance block 18 is connected to the end of the piston rod assembly 16 away from the air guide pipe 13. The variable resistance block 18 slides and engages with the sliding groove on the inner wall of the first housing 14 through a protrusion on its back. The variable resistance block 18 slides and contacts a linear resistor 17 fixed to the inner wall of the first housing 14. The end of the variable resistance block 18 away from the piston rod assembly 16 is connected to the inner wall of the first housing 14 through a second spring 19. An indicator (such as a voltmeter, LED indicator, or digital display) is electrically connected to the resistor 17 and the variable resistance block 18 through wires to display the real-time position of the variable resistance block 18 on the resistor 17 (corresponding to the pressure value or level of the piston rod assembly 16). Specifically, when the inflation pressure of the airbag 4 increases, the air pressure pushes the piston rod assembly 16 to the left, compressing the second spring 19, and simultaneously causing the variable resistance block 18 to slide on the resistor body 17, changing the circuit resistance (indicator, variable resistance block 18 and resistor body 17), and the indicator displays the corresponding pressure value; conversely, when the inflation pressure of the airbag 4 decreases, the piston rod assembly 16 moves to the right under the self-restoring force of the second spring 19, and simultaneously causes the variable resistance block 18 to slide on the resistor body 17, again changing the circuit resistance (indicator, variable resistance block 18 and resistor body 17), and the indicator updates and displays the pressure value at this time in real time.

[0035] The connecting seat 2 is also connected to a pressure time control component 8, a pressure relief pipe 21, and a second housing 20. The pressure relief pipe 21 is connected to the pressure airbag 4 and is equipped with a control valve. A series of side holes 22 are axially formed on the wall of the pressure relief pipe 21, and the diameter of the side holes 22 gradually increases from the end near the control valve to the far end. A control shaft 24 and a spring assembly 25 are connected inside the second housing 20. The control shaft 24 is rotatably connected to the second housing 20, and the inner end of the control shaft 24 is connected to the inner end of the spring body of the spring assembly 25. The outer shell of the spring assembly 25 is fixed to the second housing 20, and teeth are fixed on the control shaft 24. Wheel 26 and gear 26 mesh with rack 27. Rack 27 slides with a groove on the inner wall of the second housing 20 through a protrusion on its back. Rack 27 is fixedly connected to control cylinder 23. Control cylinder 23 is slidably and sealingly sleeved on the outside of pressure relief pipe 21. When side hole 22 is located inside control cylinder 23, side hole 22 is sealed and blocked. When side hole 22 is located outside control cylinder 23, side hole 22 communicates with the outside and releases the gas inside the pressure bladder 4. The outer end of control shaft 24 extends to the outside of the second housing 20 and is fixed with control knob. Angle markings are engraved on the outer surface of the second housing 20. Control knob is provided with an indicator arrow that cooperates with the angle markings.

[0036] The specific implementation process is as follows:

[0037] When using this compression device, first, stabilize and fix the base 1, or use the patient's body to press the base 1 firmly. According to the wound location, press down and rotate the connecting seat 2 to adjust to the appropriate angle and then lock it (if the wound is on a limb, the patient can be placed on the fixation plate 28). Rotate the height adjustment bolt 6, align the compression airbag 4 containing the hemostatic sponge with and gently touch the wound. Next, open the control valve of the air inlet tube 13, close the control valve of the pressure relief tube 21, operate the air pump to inflate the compression airbag 4, and observe the display value of the pressure indicator component 7 at the same time. When the pressure reaches the clinically required hemostatic pressure, stop the inflation. Then, open the control valve of the pressure relief tube 21, and according to the required compression hemostasis time, rotate the control knob to the corresponding angle mark position. This process will tighten the spring component 25 and drive the gear 26, rack 27 and control cylinder 23 to move, so that all side holes 22 are sealed by the control cylinder 23. After the setting is completed, the device enters the automatic timing hemostasis state. The spring assembly 25 is slowly released, gradually driving the control cylinder 23 to move back; when the set time is reached, the control cylinder 23 gradually moves away, the side hole 22 is exposed in sequence, the gas in the compressed airbag 4 is slowly released through the pressure relief pipe 21 and the side hole 22, the pressure is steadily released, and the hemostasis process ends.

[0038] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific technical solutions or characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A compression device for hemostasis of wounds in emergency trauma surgery, comprising a base and an air pump, wherein the base is connected to a connecting seat, the connecting seat is connected to a compression plate, the compression plate is connected to a compression airbag, and the air pump is in communication with the compression airbag and controls its inflation state; characterized in that, The pressure plate is also connected to a pressure indication component and a pressure time control component. The pressure indication component includes a first housing connected to the pressure plate. The first housing is connected to a fixed cylinder, a resistor, and an indicator. The fixed cylinder is fixedly connected to the first housing and communicates with the pressure airbag through an air duct. A piston rod assembly is slidably and sealingly connected to the inner side of the fixed cylinder. A variable resistance block is connected to the end of the piston rod assembly away from the air duct. The variable resistance block slides with the resistor, and the end of the variable resistance block away from the piston rod assembly is connected to the inner wall of the first housing through a second spring. The indicator is electrically connected to the resistor and the variable resistance block and displays the pressure difference between them. Relative position; the compression time control component includes a pressure relief pipe and a second housing. The pressure relief pipe is connected to the compression airbag and has a side hole. The second housing is connected to a control shaft and a spring assembly. The control shaft is rotatably connected to the second housing and connected to the spring body of the spring assembly. The control shaft is also fixedly connected to a gear. The gear meshes with a rack that is slidably connected to the second housing. The rack is fixedly connected to a control cylinder that is slidably sealed on the outside of the pressure relief pipe. When the side hole is located inside the control cylinder, the side hole is sealed and blocked. When the side hole is located outside the control cylinder, the side hole communicates with the outside and releases the gas inside the compression airbag.

2. The compression device for stopping bleeding in emergency trauma surgery wounds according to claim 1, characterized in that, The connecting seat and the base are connected by an angle adjustment assembly. The angle adjustment assembly includes a connecting cylinder fixedly connected to the base. The inner side of the connecting cylinder is provided with an internal spline and a blanking portion. The connecting seat is provided with a connecting shaft. The outer side of the connecting shaft is provided with an external spline that cooperates with the internal spline. The circumferential length of the external spline is shorter than the length of the blanking portion. When the external spline and the internal spline are engaged, the connecting seat and the base are circumferentially locked. When the external spline is entirely located in the blanking portion, the circumferential angle between the connecting seat and the base is adjustable.

3. The compression device for stopping bleeding in emergency trauma surgery wounds according to claim 2, characterized in that, The blanking portion is located on the lower side of the inner spline portion, and the connecting shaft slides through the connecting cylinder; a first spring is sleeved on the outer side of the connecting shaft, and the two ends of the first spring are respectively connected to the end face of the outer spline and the end face of the blanking portion away from the inner spline, and the length of the first spring is not shorter than the length of the blanking portion.

4. A compression device for stopping bleeding in emergency trauma surgery wounds according to claim 2, characterized in that, The pressure plate and the connecting seat are connected by a height adjusting bolt. The bolt body of the height adjusting bolt is threadedly connected to the connecting seat, and the pressure plate is rotatably connected to the height adjusting bolt.

5. A compression device for stopping bleeding in emergency trauma surgery wounds according to claim 4, characterized in that, The pressure plate is an arc-shaped plate, the height adjustment bolt is connected to the outer side of the arc surface of the pressure plate, and the pressure airbag is detachably connected to the inner side of the arc surface of the pressure plate; the connecting cylinder is detachably connected to a fixing plate located on the lower side of the pressure plate, the fixing plate is also an arc-shaped plate, and the inner sides of the arc surfaces of the pressure plate and the fixing plate are arranged opposite each other in a "()" shape.

6. A compression device for stopping bleeding in emergency trauma surgery wounds according to claim 4, characterized in that, The connecting seat has sliders slidably connected to both sides of the height adjusting bolt. The sliders are rotatably connected to guide rods, and the end of the guide rod away from the slider is rotatably connected to the pressure plate.

7. A compression device for stopping bleeding in emergency trauma surgery wounds according to claim 4, characterized in that, The compression airbag is detachably connected to a hemostatic sponge on the side away from the compression plate. The hemostatic sponge is made by chemically cross-linking chitosan and graphene oxide, and obtained by freeze-drying.

8. A compression device for stopping bleeding in emergency trauma surgery wounds according to claim 1, characterized in that, Both the air guide pipe and the pressure relief pipe are connected to a control valve to control their conduction state; the pressure relief pipe is uniformly provided with a plurality of side holes, and the diameter of the plurality of side holes gradually increases from the side of the control valve to the side away from the control valve.

9. A compression device for stopping bleeding in emergency trauma surgery wounds according to claim 1, characterized in that, The inner sides of the first and second housings are provided with sliding grooves, and the variable resistance block and the rack are provided with protrusions that cooperate with the sliding grooves. The protrusions are slidably disposed inside the sliding grooves.

10. A compression device for stopping bleeding in emergency trauma surgery wounds according to claim 1, characterized in that, An angle mark is engraved on the outside of the second housing. The control shaft is fixedly connected to a control knob located on the outside of the second housing. The control knob has an indicator arrow that matches the angle mark.

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