Compression type hemostasis device applied to emergency surgery department

Abstract

The invention discloses a compression type hemostasis device applied to emergency surgery, and particularly relates to the technical field of hemostasis instruments, the compression type hemostasis device comprises a pressing head used for pressing and covering wound gauze, a pressurizing box used for pushing the pressing head to extrude a wound is arranged at the top of the pressing head, and a bandage box and a bandage clamping box are fixed to the two sides of the pressurizing box respectively; a bandage is arranged in the bandage box; the pressurizing box comprises a plurality of inner cylinders fixed to the top of the pressing head, iron rings are fixed to the tops of the outer ends of the inner cylinders, annular electromagnets are arranged at the tops of the iron rings and attract the iron rings after being powered on, and springs in a compressed state are fixed in the inner cylinders. The spring quickly pushes the pressing head to press the wound to stop bleeding at the moment when the annular electromagnet is powered off. The compressed spring can quickly push the inner cylinder downwards at the moment that the annular electromagnet is powered off, pressure is applied to the pressing head, the pressurizing speed is increased, and quick hemostasis is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of hemostatic instruments, and more particularly to a compression type hemostatic device used in emergency surgery. Background Art

[0002] The emergency department is one of the core departments of major hospitals, mainly responsible for 24-hour reception and treatment of various acute diseases, trauma and sudden critical patients. The department that first contacts various traumatic patients is also the first to receive patients in the emergency department. Such traumatic patients are often accompanied by severe bleeding symptoms. Therefore, when emergency doctors receive traumatic patients with bleeding, they often have to stop the bleeding of the patients first. Direct pressure hemostasis is suitable for most bleeding situations. The specific operation is: use clean gauze / clean cloth to directly press the bleeding area, apply force evenly, and continue to press for 5-10 minutes.

[0003] During the process of compression hemostasis, the doctor needs to keep applying pressure on the bleeding wound. Since the pressure can last for more than ten minutes, it is easy to consume the doctor's physical strength. In addition, some patients are in serious conditions and may need to be transferred to designated surgery. During the transfer process, the bumps of the transport vehicle may affect the doctor's force when pressing the wound, resulting in insufficient force and affecting the hemostasis effect.

[0004] Although some compression hemostasis devices are used clinically to replace manual compression, such as those shown in prior art publications CN119564278A and CN118662184A, these devices all achieve the purpose of pressurization by rotating a screw and pushing a pressure plate to press the wound. The process of rotating the screw takes a certain amount of time, resulting in a slower pressurization speed during compression hemostasis, causing the patient to bleed more. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a compression-type hemostatic device for use in emergency surgery, which enables the compressed spring to quickly push the inner tube downward and apply pressure to the pressing head at the moment when the annular electromagnet is powered off, thereby accelerating the pressurization speed and achieving rapid hemostasis, thereby solving the problems arising from the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a compression type hemostatic device used in emergency surgery, comprising a pressing head for pressing gauze covering a wound, a pressurizing box for pushing the pressing head to squeeze the wound is provided on the top of the pressing head, a binding box and a binding card box are respectively fixed on both sides of the pressurizing box, a binding box is provided inside the binding box, and the binding box is pulled out from the inside of the binding box, bypasses the pressing head, and is clamped, so as to fix the pressing head on the wound;

[0007] The pressure box includes a plurality of inner cylinders fixed to the top of the pressing head. An iron ring is fixed to the top of the outer end of the inner cylinder. An annular electromagnet is provided on the top of the iron ring. After the annular electromagnet is energized, it adsorbs the iron ring. A spring in a compressed state is fixed inside the inner cylinder. When the annular electromagnet is de-energized, the spring quickly pushes the pressing head to press the wound for hemostasis.

[0008] In a preferred embodiment, the pressure box further includes a box body. A plurality of outer cylinders are fixed inside the box body. The inner cylinder is inserted inside the outer cylinder. The annular electromagnet is fixed to the top end inside the outer cylinder. The iron ring is located inside the outer cylinder;

[0009] Two electromagnets with opposite magnetic polarities are provided at the top end inside the inner cylinder. The two electromagnets are distributed vertically. A moving plate is provided at the bottom of the lower electromagnet. The bottom of the moving plate is fixed to the top end of the spring. When the electromagnet is energized, it pushes the moving plate downward and compresses the spring downward, so as to increase the force exerted by the spring on the pressing head.

[0010] In a preferred embodiment, a variable resistor for adjusting the magnitude of the current flowing through the electromagnet is provided inside the strap cartridge. The magnitude of this current is proportional to the force exerted by the electromagnet on the moving plate.

[0011] In a preferred embodiment, a control chip for controlling the energization and de-energization of the annular electromagnet, controlling the energization and de-energization of the electromagnet, and controlling the variable resistor is provided inside the strap cartridge. A display for displaying the magnitude of the current and the magnitude of the resistance is installed on the top of the strap cartridge. A plurality of buttons for emergency doctors to operate are also installed on the top of the strap cartridge.

[0012] In a preferred embodiment, a limiting rod is fixed to one end of the strap. The limiting rod is located outside the strap box. A slot for accommodating the limiting rod is fixed to the inner wall of the strap cartridge. After the strap is pulled out of the strap box, the limiting rod is inserted into the slot, so as to wind the strap and the slot around the body part of the patient with a wound.

[0013] A strap locking assembly for locking the pulled-out length of the strap is provided inside the strap box, so as to wrap the strap around the body parts of patients with different circumferences.

[0014] In a preferred embodiment, the strap locking assembly includes a reel rotatably connected inside the strap box. The strap is wound around the outside of the reel in a roll shape. Gear a is fixed to both ends of the reel. A limiting plug for preventing gear a from rotating is provided on the top of gear a. A plug moving member for driving the limiting plug to move is fixed to one side of the limiting plug. When the plug moving member pushes the limiting plug into the adjacent tooth gap of gear a, gear a cannot rotate.

[0015] In a preferred embodiment, the insert moving member includes a bent rod fixed to the limiting insert. One end of the bent rod away from the limiting insert passes through the strap box and extends to the top of the strap box. The outer wall of the end of the bent rod extending out of the top of the strap box is processed with an external thread, and the helix directions of the external threads on the outer walls of the two bent rods are opposite. The ends of the two bent rods away from the limiting insert are threadedly connected with a threaded cylinder. The inner wall of the threaded cylinder is processed with internal threads with opposite helix directions, and a rubber sleeve is fixed on the outer wall of the threaded cylinder.

[0016] In a preferred embodiment, a plurality of limiting seats are fixed to the inner top end of the strap box. The number of limiting seats at the outer end of each bent rod is two. A square rod with a rectangular cross-section is fixed to the outer end of each bent rod. The square rod penetrates through the limiting seat to limit the rotation of the bent rod.

[0017] A strip-shaped groove for the movement of the square rod is opened at the top of the strap box, and the length of the strip-shaped groove is the same as the moving distance of the limiting insert.

[0018] In a preferred embodiment, the bottom end of gear a meshes with gear b. A rotating shaft is fixedly penetrated through the middle of gear b. One end of the rotating shaft is movably connected with the inner wall of the strap box through a bearing. A torsion spring for pulling gear b to rotate is sleeved on the rotating shaft. One end of the torsion spring is fixed to the outer wall of the rotating shaft, and the other end of the torsion spring is fixed to the inner wall of the strap box, for pulling gear b and gear a to rotate in the opposite direction to wind up the strap after it is pulled out.

[0019] The technical effects and advantages of the present invention:

[0020] 1. The present invention uses the pressing head to press the gauze on the wound to achieve the effect of compressive hemostasis. Then, by pressing a button to control the power-off of the annular electromagnet, the compressed spring can quickly push the inner cylinder downward and exert pressure on the pressing head at the moment when the annular electromagnet is powered off, so as to accelerate the pressurization speed and achieve rapid hemostasis.

[0021] 2. The present invention controls the magnitude of the current flowing through two electromagnets with opposite magnetic polarities, so that the electromagnet located below can move downward along the inner wall of the inner cylinder and continuously compress the spring, so as to increase the pressure exerted by the spring on the pressing head, enabling the present invention to flexibly adjust the magnitude of the compressive hemostasis pressure according to the severity of the wound.

[0022] 3. The present invention passes the strap around the hemostatic part of the patient to tightly fix the pressing head on the gauze of the wound, so as to ensure the accuracy of the compression position. At the same time, the present invention is small in size and can also be conveniently used on a stretcher with limited space, so as to ensure that the present invention can play a hemostatic role during the transportation of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the first view of the overall structure of the present invention;

[0024] Figure 2 It is the second view of the overall structure of the present invention;

[0025] Figure 3 It is a schematic diagram after the strap of the present invention is pulled out;

[0026] Figure 4 It is a schematic diagram after the strap of the present invention bypasses the bottom of the pressing head;

[0027] Figure 5 It is a schematic diagram of the structure of the inner cylinder, the ring-shaped electromagnet and the iron ring of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the inner cylinder, the outer cylinder, the electromagnet and the spring of the present invention;

[0029] Figure 7 It is a cross-sectional view of the strap box of the present invention;

[0030] Figure 8 For the present invention Figure 7 An enlarged view of A in

[0031] Figure 9 For the present invention Figure 7 An enlarged view of B in

[0032] Figure 10 It is a cross-sectional view of the strap card box of the invention.

[0033] Reference numerals are:

[0034] 1. Pressing head; 2. Pressurizing box; 3. Strap box; 4. Strap; 5. Limit rod; 6. Strap card box; 7. Strap locking assembly; 8. Handle; 9. Button; 10. Display; 11. Slot; 12. Control chip; 13. Rod sleeve;

[0035] 21. Box body; 22. Outer cylinder; 23. Inner cylinder; 24. Iron ring; 25. Ring-shaped electromagnet; 26. Spring; 27. Moving plate; 28. Electromagnet; 29. Variable resistor;

[0036] 71. Reel; 72. Gear a; 73. Limit insertion block; 74. Insertion block moving part; 75. Rotating shaft; 76. Gear b; 77. Torsion spring;

[0037] 741. Bent rod; 742. Square rod; 743. Limit seat; 744. Threaded cylinder; 745. Rubber sleeve; 746. Strip-shaped groove. Detailed implementation manners

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Refer to the instruction manual Figure 1-10 The present invention provides a compression type hemostatic device for emergency surgery, comprising a pressing head 1 for pressing a gauze covering a wound, the bottom end of the pressing head 1 being processed into a smooth cambered surface, which can avoid causing secondary damage to the patient's wound, a pressurizing box 2 for pushing the pressing head 1 to squeeze the wound is provided on the top of the pressing head 1, a strap box 3 and a strap card box 6 are fixed on both sides of the pressurizing box 2, a strap 4 is provided inside the strap box 3, a limiting rod 5 is fixed at one end of the strap 4, the limiting rod 5 is clamped on the outside of the strap box 3, a slot 11 for accommodating the limiting rod 5 is fixed on the inner wall of the strap card box 6, when fixing the position of the pressing head 1, first pull the strap 4 out of the strap box 3, then bypass the strap 4 from the wounded part of the patient (for example, bypass the wounded arm, thigh, calf or abdomen), and then insert the limiting rod 5 into the slot 11, so that the pressing head 1, the pressurizing box 2 and the strap 4 are as follows Figure 4 In the state shown in , the wounded part of the patient is located between the strap 4 and the pressing head 1, so that the pressing head 1 can be fixed on the wound of the patient, so as to facilitate the use of the present invention on a transport bed with effective operating space. Moreover, under the fixation of the strap 4, the bumps of the transport bed can be prevented from affecting the accuracy of the pressing position of the pressing head 1, so that the pressing head 1 can always be fixed on the wound of the patient;

[0040] Moreover, in order to further press the pressing head 1 tightly against the wound, a strap locking assembly 7 for locking the length of the strap 4 after it is pulled out is provided in the strap box 3. Specifically, Figure 8 and Figure 9 As shown in: the strap locking assembly 7 includes a reel 71 rotatably connected to the inside of the strap box 3, the strap 4 is rolled around the reel 71, gears a72 are fixed at both ends of the reel 71, a limit plug 73 is provided on the top of the gear a72 to prevent the gear a72 from rotating, and a plug moving member 74 for driving the limit plug 73 to move is fixed on one side of the limit plug 73, and the gear a72 can be prevented from rotating by pushing the limit plug 73 into the adjacent tooth gap of the gear a72 using the plug moving member 74, so that the gear a72 cannot rotate, and the length of the strap 4 pulled out can be locked at this time;

[0041] In this embodiment, the specific structure of the insert moving member 74 is as follows: Figure 9As shown in the figure: The insert block moving member 74 includes a bent rod 741 fixed to the limit insert block 73. One end of the bent rod 741 away from the limit insert block 73 passes through the strap box 3 and extends to the top of the strap box 3. The outer wall of the end of the bent rod 741 extending out of the top of the strap box 3 is processed with an external thread. Threaded sleeves 744 are threadedly connected to the ends of the two bent rods 741 away from the limit insert block 73, and a rubber sleeve 745 is fixed to the outer wall of the threaded sleeve 744;

[0042] A plurality of limit seats 743 are also fixed to the inner top of the strap box 3. The number of limit seats 743 at the outer end of each bent rod 741 is two. A square rod 742 with a rectangular cross-section is fixed to the outer end of each bent rod 741. The square rod 742 penetrates through the limit seat 743 to limit the rotation of the bent rod 741. A strip-shaped groove 746 for the movement of the square rod 742 is opened at the top of the strap box 3, and the length of the strip-shaped groove 746 is the same as the moving distance of the limit insert block 73.

[0043] When the length of the strap 4 pulled out is long enough to wrap around the body part of the patient with a wound, the rubber sleeve 745 can be rotated to drive the threaded sleeve 744 inside it to rotate. Since the threaded sleeve 744 is threadedly connected to the bent rod 741, and the external threads on the outer walls of the two bent rods 741 have opposite helix directions, and the internal threads at both ends of the inner wall of the threaded sleeve 744 also have opposite helix directions, rotating one threaded sleeve 744 can drive the two bent rods 741 to move in different directions respectively, so as to be able to push the limit insert block 73 into the tooth gaps of the two gears a72 to prevent the gear a72 from rotating, achieving the effect of locking the pulled-out length of the strap 4.

[0044] After locking the length of the strap 4, the wound can be compressed by using the pressing head 1. The pressing head 1 is pushed by the pressurizing box 2 to compress the wound. Among them, the specific structure of the pressurizing box 2 is as Figure 3-7 shown in the figure. The pressurizing box 2 includes a plurality of inner cylinders 23 fixed to the top of the pressing head 1. An iron ring 24 is fixed to the top of the outer end of the inner cylinder 23. An annular electromagnet 25 is arranged on the top of the iron ring 24. The annular electromagnet 25 can select an electromagnet of model KK-P75 / 20, which is a device that uses the electromagnetic principle to adsorb ferromagnetic materials. It can generate magnetic force under the action of electromagnetic induction after being powered on. Therefore, the annular electromagnet 25 in the present invention can adsorb the iron ring 24 made of ferromagnetic materials after being powered on;

[0045] The structure of the pressure box 2 further includes a box body 21. A plurality of outer cylinders 22 are fixed inside the box body 21. The inner cylinder 23 is inserted inside the outer cylinder 22. The annular electromagnet 25 is fixed at the top end inside the outer cylinder 22. The iron ring 24 is located inside the outer cylinder 22, and when the annular electromagnet 25 is energized, it will adsorb the iron ring 24, so that the inner cylinder 23 can be adsorbed and fixed inside the pressure box 2 by the annular electromagnet 25. At this time, the spring 26 is in a compressed state. Therefore, when it is necessary to start compressing and stopping bleeding, only need to control the annular electromagnet 25 to cut off the power, so that the annular electromagnet 25 no longer adsorbs and fixes the position of the iron ring 24. At this time, the compressed spring 26 can push the inner cylinder 23 to extend from inside the outer cylinder 22 at the moment of power failure, and push the pressing head 1 to tightly press on the patient's wound to achieve the effect of compressing and stopping bleeding;

[0046] For some wounds that require increasing the compression force, the present invention also has two electromagnets 28 with opposite magnetic poles fixed at the top end inside the inner cylinder 23 (the electromagnet 28 can adopt a sucker-type electromagnet with the model KK-P59 / 34. This sucker-type electromagnet can carry magnetism after being energized, and the magnetic force of the electromagnet can also be adjusted by changing the magnitude of the current flowing through it). The two electromagnets 28 are distributed up and down;

[0047] The upper electromagnet 28 is fixed at the bottom end inside the inner cylinder 23. A moving plate 27 is fixed at the bottom of the lower electromagnet 28. The top end of the spring 26 is fixedly connected to the bottom of the moving plate 27. A variable resistor 29 for adjusting the magnitude of the current flowing through the electromagnet 28 is also provided in the strap cartridge 6. The variable resistor 29 can be a variable resistor with the model SP5-2. This variable resistor is an electronic component that can manually or automatically adjust the resistance value. In the present invention, a manually adjustable variable resistor is selected;

[0048] By adjusting the resistance value of the variable resistor 29 to control the magnitude of the current flowing through the electromagnet 28. It is known that the magnitude of this current is proportional to the magnetic force of the electromagnet 28 after being energized. That is to say, the greater the current flowing through the electromagnet 28, the greater the magnetic force of the electromagnet 28. Also, because the magnetic poles of the two electromagnets 28 are opposite, the two electromagnets 28 will push the lower electromagnet 28 to squeeze the moving plate 27 downward under the action of the same-sex repulsion after being energized, so that the moving plate 27 can continue to compress the spring 26. The greater the squeezing force received by the spring 26, the greater the force it exerts on the inner cylinder 23 and the pressing head 1, thereby being able to increase the force exerted by the pressing head 1 on the patient's wound, enhance the effect of compressing and stopping bleeding, and also enable the present invention to be applicable to wounds with different bleeding degrees.

[0049] In this embodiment, for the convenience of controlling the annular electromagnet 25 and the electromagnet 28, such as Figure 10As shown in the figure: Inside the strap cartridge 6, there is a control chip 12 for controlling the power on and off of the ring electromagnet 25, the power on and off of the electromagnet 28, and the variable resistor 29. There are also multiple buttons 9 installed on the top of the strap cartridge 6 for emergency doctors to operate. One of the buttons 9 is the power button for starting the device. Another button 9 is a switch for separately controlling the power off of the ring electromagnet 25. By pressing this button 9, the effect of controlling the power off of the ring electromagnet 25 can be achieved. The remaining button 9 is a control knob for controlling the resistance value of the variable resistor 29 connected to the circuit. By rotating this control knob, the magnitude of the current flowing through the electromagnet 28 can be controlled, thereby enabling the adjustment of the magnetic force magnitude of the electromagnet 28. The above control process can be displayed through the display 10 installed on the top of the strap cartridge 6. The display 10 can be used to display the magnitude of the current flowing through the electromagnet 28, the range of the resistance value of the variable resistor 29, and the power on and off state of the ring electromagnet 25.

[0050] In addition, it is worth noting that the circuit between the electromagnet 28 and the ring electromagnet 25 used in the present invention is a parallel circuit. In the branch where the electromagnet 28 is located, a variable resistor 29 and a control knob for adjusting the resistance value of the variable resistor 29 are connected in series. In the branch where the ring electromagnet 25 is located, a switch for controlling the power on and off of the ring electromagnet 25 is connected in series. The control chip 12, the display 10, and the storage battery for power supply are connected in series with this parallel circuit. This circuit connection can be achieved by using existing technical means and belongs to mature prior art, so it will not be further described in the present invention.

[0051] After hemostasis, first cut off the power supply to the electromagnet 28, then start the power supply to the ring electromagnet 25, so that the ring electromagnet 25 can re-adsorb the iron ring 24, control the inner cylinder 23 to retract into the box body 21, and then pull out the limit rod 5 from the rod sleeve 13. Next, the stretched strap 4 needs to be re-wound onto the reel 71. To facilitate this operation of the strap 4, as Figure 8 shown in the figure: A gear b76 is also meshed at the bottom end of the gear a72. A rotating shaft 75 is fixedly penetrated through the middle of the gear b76. One end of the rotating shaft 75 is movably connected to the inner wall of the strap box 3 through a bearing. A torsion spring 77 for pulling the gear b76 to rotate is sleeved outside the rotating shaft 75. One end of the torsion spring 77 is fixed to the outer wall of the rotating shaft 75, and the other end of the torsion spring 77 is fixed to the inner wall of the strap box 3;

[0052] During the above process, stretching the binding strap 4 will drive the reel 71 and the gears a72 at both ends of the reel 71 to rotate. Then, the gear a72 will drive the gear b76 to rotate, and further drive the rotating shaft 75 to rotate through the gear b76. During the rotation of the rotating shaft 75, one end of the coil spring 77 is stretched. It is known that the coil spring 77 is an elastic element wound into a spiral shape by spring steel and has a certain elasticity itself. Therefore, before removing the limiting rod 5 from the inside of the rod sleeve 13, the rubber sleeve 745 can be rotated reversely first to move the limiting plug 73 out of the tooth gaps of the gear a72, and then the limiting rod 5 can be removed, so that the gear b76 can rotate reversely under the elastic action of the coil spring 77 and drive the gear a72 and the reel 71 to rotate reversely, so as to be able to rewind the stretched binding strap 4 onto the outside of the reel 71. There is no need for medical staff to operate manually, so as to further enhance the convenience of using the present invention. Moreover, the present invention is also fixed with a handle 8 on the top of the pressurizing box 2, which can also facilitate emergency doctors to pick up the present invention to stop bleeding for patients in an emergency, and is convenient to carry, so as to enhance the convenience of the present invention.

[0053] Finally: The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A compression hemostasis device applied to emergency surgery, comprising a pressing head (1) for pressing and covering a gauze on a wound, characterized in that: At the top of the pressing head (1), there is a pressurizing box (2) for pushing the pressing head (1) to squeeze the wound. On both sides of the pressurizing box (2), a strap box (3) and a strap clamping box (6) are respectively fixed. Inside the strap box (3), there is a strap (4). After the strap (4) is pulled out from the inside of the strap box (3), it bypasses the pressing head (1) and is clamped to fix the pressing head (1) on the wound. The pressurizing box (2) includes a plurality of inner cylinders (23) fixed on the top of the pressing head (1). At the top of the outer end of the inner cylinder (23), an iron ring (24) is fixed. At the top of the iron ring (24), there is an annular electromagnet (25). After the annular electromagnet (25) is powered on, it adsorbs the iron ring (24). Inside the inner cylinder (23), a spring (26) in a compressed state is fixed. At the moment when the annular electromagnet (25) is powered off, the spring (26) quickly pushes the pressing head (1) to press the wound for hemostasis.

2. The compression hemostasis device applied to emergency surgery according to claim 1, characterized in that: The pressurizing box (2) further includes a box body (21). Inside the box body (21), a plurality of outer cylinders (22) are fixed. The inner cylinder (23) is inserted inside the outer cylinder (22). The annular electromagnet (25) is fixed at the top end inside the outer cylinder (22), and the iron ring (24) is located inside the outer cylinder (22). At the top end inside the inner cylinder (23), there are two electromagnets (28) with opposite magnetic polarities. The two electromagnets (28) are distributed vertically. At the bottom of the electromagnet (28) located below, there is a moving plate (27). The bottom of the moving plate (27) is fixed to the top end of the spring (26). After the electromagnet (28) is powered on, it pushes the moving plate (27) downward and compresses the spring (26) downward to increase the force exerted by the spring (26) on the pressing head (1).

3. The compression hemostasis device applied to emergency surgery according to claim 2, wherein: Inside the strap clamping box (6), there is a variable resistor (29) for adjusting the magnitude of the current flowing through the electromagnet (28), and the magnitude of this current is proportional to the force exerted by the electromagnet (28) on the moving plate (27).

4. The compression hemostasis device for emergency surgery according to claim 3, wherein: Inside the strap clamping box (6), there is a control chip (12) for controlling the power on and off of the annular electromagnet (25), the power on and off of the electromagnet (28), and the variable resistor (29). On the top of the strap clamping box (6), a display (10) for displaying the magnitude of the current and the magnitude of the resistance is installed. On the top of the strap clamping box (6), a plurality of buttons (9) for emergency doctors to operate are also installed.

5. The compression hemostasis device applied to emergency surgery according to claim 1, wherein: One end of the strap (4) is fixed with a limiting rod (5). The limiting rod (5) is located outside the strap box (3). On the inner wall of the strap clamping box (6), a slot (11) for accommodating the limiting rod (5) is fixed. After the strap (4) is pulled out from the strap box (3), the limiting rod (5) is inserted into the slot (11) to wrap the strap (4) and the slot (11) around the body part of the patient with the wound. Inside the strap box (3), there is a strap locking assembly (7) for locking the pulling length of the strap (4) to wrap the strap (4) around the body parts of different circumferences of the patient.

6. The compression hemostasis device for emergency surgery according to claim 5, wherein: The strap locking assembly (7) includes a reel (71) rotatably connected inside the strap box (3). The strap (4) is wound around the outside of the reel (71) in a roll. Gear a (72) is fixed at both ends of the reel (71). A limit plug (73) for preventing the rotation of gear a (72) is provided at the top of gear a (72). A plug moving member (74) for driving the movement of the limit plug (73) is fixed to one side of the limit plug (73). When the plug moving member (74) pushes the limit plug (73) into the adjacent tooth gap of gear a (72), gear a (72) cannot rotate.

7. The compression hemostasis device applied to emergency surgery according to claim 6, characterized in that: The plug moving member (74) includes a bent rod (741) fixed to the limit plug (73). One end of the bent rod (741) away from the limit plug (73) passes through the strap box (3) and extends to the top of the strap box (3). The outer wall of the end of the bent rod (741) extending out of the top of the strap box (3) is processed with an external thread, and the external threads on the outer walls of the two bent rods (741) have opposite helix directions. A threaded cylinder (744) is threadedly connected to the ends of the two bent rods (741) away from the limit plug (73). The inner wall of both ends of the threaded cylinder (744) is processed with internal threads having opposite helix directions. A rubber sleeve (745) is fixed to the outer wall of the threaded cylinder (744).

8. The compression hemostasis device for emergency surgery according to claim 7, characterized in that: A plurality of limit seats (743) are fixed to the inner top of the strap box (3). The number of limit seats (743) at the outer end of each bent rod (741) is two. A square rod (742) with a rectangular cross-section is fixed to the outer end of each bent rod (741). The square rod (742) passes through the limit seat (743) to limit the rotation of the bent rod (741). A strip-shaped slot (746) for the movement of the square rod (742) is provided at the top of the strap box (3). The length of the strip-shaped slot (746) is the same as the movement distance of the limit plug (73).

9. The compression hemostasis device for emergency surgery according to claim 6, characterized in that: Gear b (76) is engaged with the bottom end of gear a (72). A rotating shaft (75) is fixedly penetrated through the middle of gear b (76). One end of the rotating shaft (75) is movably connected to the inner wall of the strap box (3) through a bearing. A torsion spring (77) for pulling gear b (76) to rotate is sleeved on the rotating shaft (75). One end of the torsion spring (77) is fixed to the outer wall of the rotating shaft (75), and the other end of the torsion spring (77) is fixed to the inner wall of the strap box (3) to pull gear b (76) and gear a (72) to rotate in the opposite direction to wind up the pulled-out strap (4).

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