Abdomen decontamination device for traumatology department

Abstract

The invention relates to the technical field of medical instruments, in particular to a trauma surgery abdomen decontamination device which comprises a disinfection box and a spray pipe, an infusion tube is inserted into the side wall of the spray pipe, a spray head is mounted at the bottom end of the spray pipe, a piston slides in the spray pipe, a pull rod is fixed to the top end of the piston, and a spring sleeves the outer wall of the pull rod. An adjusting mechanism is arranged on the outer side of the spray pipe and comprises a shell fixed to the outer wall of the spray pipe, a threaded rod A is rotationally arranged in the shell, a rotary knob is fixed to the bottom end of the threaded rod A, a sliding block is in threaded connection with the outer wall of the threaded rod A, and the surface of the threaded rod A is movably sleeved with a sliding sleeve A; the rotary knob synchronously drives the threaded rod B to rotate, so that the sliding sleeve B moves up and down, the adjusting rod pushes the moving plate to slide in the inner cavity of the spray head, the moving plate drives the ball to synchronously move through the vertical rod, the output amount and the spraying form of the decontamination liquid are synchronously adjusted, and the decontamination requirements of different abdominal wounds are met.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an abdominal decontamination device for trauma surgery. Background Technology

[0002] In the clinical diagnosis and treatment of trauma surgery, abdominal trauma is often accompanied by open wounds, tissue damage and residual contaminants. It is necessary to remove foreign bodies, necrotic tissue and pathogenic microorganisms from the surface and deep layers of the wound through professional debridement and disinfection operations to lay the foundation for subsequent debridement and suturing, infection control and tissue repair. Therefore, abdominal wound debridement devices are one of the core instruments in trauma surgery nursing.

[0003] However, the nozzle structure of traditional decontamination devices is fixed and can only output a single type of water flow. When medical staff face wounds of different depths and conditions, the water flow is either too strong and damages the tissue, or too weak and fails to achieve the desired decontamination effect, resulting in poor decontamination results.

[0004] In view of this, this study aims to address the existing problems and improve upon them by providing an abdominal decontamination device for trauma surgery. The goal is to solve the problems and enhance the practical value of this technology. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and to propose an abdominal decontamination device for trauma surgery.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an abdominal disinfection device for trauma surgery, comprising a disinfection box and a spray pipe, wherein an infusion tube is inserted into the side wall of the spray pipe, a nozzle is installed at the bottom end of the spray pipe, a piston slides inside the spray pipe, a pull rod is fixed at the top end of the piston, and a spring is sleeved on the outer wall of the pull rod. An adjustment mechanism is provided on the outside of the nozzle. The adjustment mechanism includes a housing fixed to the outer wall of the nozzle. A threaded rod A rotates inside the housing. A knob is fixed to the bottom end of the threaded rod A. A slider is threaded to the outer wall of the threaded rod A. A sliding sleeve A is movably fitted on the surface of the threaded rod A. A connecting rod A is fixed between the pull rod and the sliding sleeve A. A threaded rod B is fixed to the bottom end of the knob. A sliding sleeve B is threaded to the outer wall of the threaded rod B. A movable plate is provided in the inner cavity of the nozzle. A vertical rod penetrating the nozzle is fixed to the bottom end of the movable plate. A ball is fixed to the bottom end of the vertical rod. An adjustment rod is fixed between the sliding sleeve B and the movable plate. The nozzle is provided with a protective mechanism at its bottom end. The protective mechanism includes a protective cover fitted on the bottom end of the nozzle, a sleeve fixed to the outer wall of the nozzle, an air supply pipe connected to the outer wall of the sleeve, a venturi tube connected to one end of the air supply pipe, and a connecting pipe connecting the protective cover and the venturi tube. The protective cover is equipped with a collection mechanism inside.

[0007] Preferably, one end of the spring is fixedly connected to the top of the piston, and the other end of the spring is fixedly connected to the inner wall of the nozzle.

[0008] Preferably, the threaded rod A has a greater pitch than the threaded rod B, and the threaded rod A is used to drive the sliding sleeve A and the connecting rod A to move the pull rod along the nozzle axial direction to adjust the piston stroke and control the output of the decontamination liquid in the nozzle. The threaded rod B is used to drive the sliding sleeve B and the adjusting rod to move the moving plate along the nozzle cavity to adjust the nozzle outlet diameter.

[0009] Preferably, the outer wall of the nozzle is fixed with a slide rail, and the outer wall of the adjusting rod slides inside the slide rail.

[0010] Preferably, a connecting rod B slides inside the sleeve, a magnetic block A is installed at the bottom end of the connecting rod B, a magnetic block B slides at the bottom end of the sleeve, a push rod is fixed at the bottom end of the magnetic block B, and a top rod is fixed at the top end of the sleeve.

[0011] Preferably, both magnetic block A and magnetic block B are neodymium iron boron strong magnets, and the magnetic poles of the opposite sides of magnetic block A and magnetic block B are opposite.

[0012] Preferably, the protective cover has a hollow structure, and multiple sets of air holes are provided at the bottom of the protective cover.

[0013] Preferably, the collection mechanism includes an annular tube inside the protective cover, the outer wall of the annular tube is connected to a suction tube that extends into the inside of the protective cover, a collection bottle is installed inside the disinfection box, a return pipe is connected between the annular tube and the collection bottle, an air suction tube is connected between the collection bottle and the outer wall of the sleeve, and a one-way valve is provided at the connection between the sleeve and the air supply pipe and the air suction tube.

[0014] Preferably, the outer wall of the nozzle is made of transparent glass, and a one-way valve is provided at the connection between the nozzle and the infusion pipe and the nozzle head.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, when the slider moves upward, the sliding sleeve A pulls the lever and piston upward, increasing the volume formed by the piston and the bottom of the nozzle, thereby reducing the output of the disinfectant solution when the lever is pressed once. When the slider moves downward, the sliding sleeve A pushes the lever and piston downward, reducing the volume between the piston and the bottom of the nozzle, thus increasing the output of the disinfectant solution when the lever is pressed once. By changing the stroke of the piston inside the nozzle, the amount of disinfectant solution sprayed can be quickly adjusted according to the actual wound depth of the patient's abdominal trauma. This avoids excessive waste of disinfectant solution due to shallow wounds and prevents insufficient disinfectant solution or inadequate wound coverage due to deep wounds. It achieves precise dosage of disinfectant solution and efficient adaptation to the nursing needs of different degrees of abdominal trauma, ensuring the practicality of the disinfection operation.

[0016] 2. This invention uses a knob to synchronously rotate the threaded rod B, causing the sliding sleeve B to move up and down along its axis. This, in turn, drives the adjusting rod to push the moving plate to slide within the nozzle cavity. The moving plate, through the vertical rod, drives the ball to move synchronously. When the sliding sleeve A moves upward, the sliding sleeve B moves upward simultaneously. The adjusting rod pulls the moving plate, the vertical rod, and the ball upward, reducing the distance between the ball and the water spray hole. The decontamination solution is squeezed out at high speed from the gap to form a water mist with weak impact force, which can remove surface contaminants and protect newly formed epithelium. When the sliding sleeve B moves downward, the adjusting rod pushes the moving plate, the vertical rod, and the ball downward, increasing the distance between the ball and the water spray hole. The decontamination solution flows out smoothly to form a columnar flow, which can penetrate deep tissues to remove necrotic tissue and foreign objects, reducing the risk of infection. This invention achieves synchronous adjustment of the decontamination solution output and spray pattern, and can adapt to the decontamination needs of different abdominal wounds.

[0017] 3. This invention, through piston stroke adjustment, allows medical staff to pull the lever, causing the piston to move upwards, creating negative pressure inside the nozzle. A measured amount of disinfectant solution is drawn from the storage bottle via the infusion tube. Simultaneously, the protective cover is placed against the patient's abdomen. The upward movement of the lever also moves connecting rod B and magnetic block A upwards. Magnetic block A, through attraction, moves magnetic block B upwards along the sleeve, creating negative pressure inside the sleeve and absorbing gas from the collection bottle via the suction tube. Magnetic block B rises to a specific position and contacts the top rod. The top rod pushes it away from magnetic block A, causing magnetic block B to reset and compress the gas inside the sleeve. The gas is then discharged through the gas delivery tube into the Venturi tube. Utilizing the pressure difference in the Venturi tube, negative pressure is created inside the protective cover via the connecting tube. The protective cover, through its vents, adheres to the abdomen, forming a seal. This prevents the disinfectant solution from contaminating the operating table, medical staff clothing, and other surrounding environments, and also avoids irritation of the patient's non-traumatic skin by leaked disinfectant solution, thus improving the cleanliness and safety of the disinfection operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the nozzle structure of the present invention; Figure 3This is a schematic cross-sectional view of the housing structure of the present invention; Figure 4 This is a schematic cross-sectional view of the nozzle structure of the present invention; Figure 5 This is a schematic diagram of the protective mechanism structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram of section A; Figure 7 For the present invention Figure 5 Enlarged structural diagram of section B; Figure 8 This is a schematic diagram of the bottom structure of the protective cover of the present invention.

[0019] Legend: 1. Disinfection box; 2. Spray nozzle; 3. Infusion tube; 4. Nozzle; 5. Pull rod; 6. Piston; 7. Spring; 8. Adjustment mechanism; 81. Housing; 82. Threaded rod A; 83. Knob; 84. Slider; 85. Sliding sleeve A; 86. Connecting rod A; 87. Threaded rod B; 88. Sliding sleeve B; 89. Adjustment rod; 810. Moving plate; 811. Vertical rod; 812. Ball; 813. Slide rail; 9. Protective mechanism; 91. Protective cover; 92. Sleeve; 93. Connecting rod B; 94. Magnetic block A; 95. Magnetic block B; 96. Push rod; 97. Gas delivery tube; 98. Venturi tube; 99. Connecting tube; 910. Top rod; 10. Collection mechanism; 101. Ring tube; 102. Suction tube; 103. Collection bottle; 104. Return tube; 105. Suction tube. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] See Figures 1 to 8 As shown, the present invention provides an abdominal disinfection device for trauma surgery, including a disinfection box 1 and a spray pipe 2. An infusion tube 3 is inserted into the side wall of the spray pipe 2, a nozzle 4 is installed at the bottom end of the spray pipe 2, a piston 6 slides inside the spray pipe 2, a pull rod 5 is fixed at the top end of the piston 6, and a spring 7 is sleeved on the outer wall of the pull rod 5. An adjustment mechanism 8 is provided on the outside of the nozzle 2. The adjustment mechanism 8 includes a housing 81 fixed to the outer wall of the nozzle 2. A threaded rod A82 is rotatably mounted inside the housing 81. A knob 83 is fixed to the bottom end of the threaded rod A82. A slider 84 is threadedly connected to the outer wall of the threaded rod A82. A sliding sleeve A85 is movably fitted on the surface of the threaded rod A82. A connecting rod A86 is fixed between the pull rod 5 and the sliding sleeve A85. A threaded rod B87 is fixed to the bottom end of the knob 83. A sliding sleeve B88 is threadedly connected to the outer wall of the threaded rod B87. A movable plate 810 is provided in the inner cavity of the nozzle 4. A vertical rod 811 penetrating the nozzle 4 is fixed to the bottom end of the movable plate 810. A ball 812 is fixed to the bottom end of the vertical rod 811. An adjustment rod 89 is fixed between the sliding sleeve B88 and the movable plate 810. It should be noted that when medical staff perform decontamination operations according to the required depth of the patient's abdominal wound, rotating the knob 83 clockwise or counterclockwise causes the threaded rod A82 to rotate. Since the threads on the outer wall of the threaded rod A82 mesh with the slider 84, which is limited by the inner wall of the housing 81, the slider 84 moves up and down along the axial direction of the threaded rod A82. The sliding sleeve A85, which is linked to the slider 84 and movably sleeved on the surface of the threaded rod A82, moves synchronously with the slider 84. The sliding sleeve A85 then drives the pull rod 5 and piston 6 to slide along the inner cavity of the nozzle 2 via the connecting rod A86. When the slider 84 moves upward, the sliding sleeve A85 pulls the pull rod 5 and piston 6 upward, causing the piston 6 to form a contact point with the bottom end of the nozzle 2. The increased volume reduces the amount of disinfectant output when the lever 5 is pressed once. When the slider 84 moves downward, the sliding sleeve A85 pushes the lever 5 and piston 6 downward, reducing the volume of piston 6 and the bottom of nozzle 2, thereby increasing the amount of disinfectant output when the lever 5 is pressed once. By changing the stroke of piston 6 inside nozzle 2, the amount of disinfectant sprayed can be quickly adjusted according to the actual wound depth of the patient's abdominal trauma. This avoids excessive waste of disinfectant due to shallow wounds and prevents insufficient disinfectant coverage due to deep wounds. It achieves precise dosage of disinfectant and efficient adaptation to the nursing needs of different degrees of abdominal trauma, ensuring the practicality of the disinfection operation. Meanwhile, as knob 83 drives threaded rod A82 to rotate, knob 83 also drives threaded rod B87 to rotate synchronously, causing sliding sleeve B88 to move up and down along the axial direction of threaded rod B87. Sliding sleeve B88 further drives adjusting rod 89 to move. The movement of adjusting rod 89 pushes moving plate 810 to slide in the inner cavity of nozzle 4. Moving plate 810 then drives ball 812 to move synchronously via vertical rod 811. Since the threads on the surfaces of threaded rod A82 and threaded rod B87 are designed in the same direction, when sliding sleeve A85 moves upward, causing sliding sleeve B88 to move upward synchronously, adjusting rod 89 pulls moving plate 810 upward. Vertical rod 811 then drives ball 812 upward, shortening the distance between ball 812 and the spray hole of nozzle 4. The flow channel of the spray hole is partially blocked by ball 812, and the decontamination liquid needs to be squeezed out at high speed from the gap between ball 812 and nozzle 4. The fluid generates strong turbulence in the gap. After being sprayed out, the fluid rapidly impacts and breaks up, forming a fine water mist. At this point, the fluid impact force is relatively weak, which can effectively remove tiny contaminants from the wound surface while avoiding secondary damage to fragile superficial tissues, thus protecting newly formed epithelial tissue. When the sliding sleeve B88 moves downward, the adjusting rod 89 pushes the moving plate 810 downward, and the vertical rod 811 drives the sphere 812 downward, increasing the distance between the sphere 812 and the spray hole of the nozzle 4. The shielding effect of the sphere 812 on the fluid is weakened, and the decontamination solution can flow smoothly out along the axis of the spray hole and flow downward along the surface of the sphere 812, forming a continuous columnar flow. This columnar flow can penetrate to the deep tissues of the wound, effectively peeling off necrotic tissue and flushing out deeply embedded foreign objects, reducing the risk of infection caused by incomplete debridement, improving the convenience of abdominal wound decontamination operations, and realizing the synchronous adjustment of the decontamination solution output and spray pattern, which can adapt to the decontamination needs of different abdominal wounds.

[0022] The nozzle 2 is provided with a protective mechanism 9 at its bottom end. The protective mechanism 9 includes a protective cover 91 fitted onto the bottom end of the nozzle 2, a sleeve 92 fixed to the outer wall of the nozzle 2, an air supply pipe 97 connected to the outer wall of the sleeve 92, a venturi tube 98 connected to one end of the air supply pipe 97, and a connecting pipe 99 connected between the protective cover 91 and the venturi tube 98. It should be noted that after the piston 6's stroke is adjusted, the medical staff pulls the lever 5, causing the piston 6 to move upward along the inside of the nozzle 2. The upward movement of the piston 6 creates a negative pressure inside the nozzle 2, drawing a measured amount of disinfectant solution from the storage bottle through the infusion tube 3. At this time, the medical staff applies the protective cover 91 to the patient's abdominal wound. During the upward movement of the lever 5, the connecting rod B93 moves upward simultaneously, which in turn moves the magnetic block A94 upward. Due to the mutual attraction between magnetic blocks A94 and B95, magnetic block A94 causes magnetic block B95 to move upward synchronously along the inside of the sleeve 92. The upward movement of magnetic block B95 creates a negative pressure inside the sleeve 92, drawing gas from the collection bottle 103 through the suction tube 105. When magnetic block B95 rises to a specific position, its top... When the push rod 910 contacts the bottom end, it pushes the magnetic block B95 to separate from the magnetic block A94. The magnetic block B95, which loses its attraction, squeezes the gas inside the sleeve 92 under its own restoring force. The squeezed gas enters the venturi tube 98 along the gas supply pipe 97 and is discharged from one end of the venturi tube 98. Using the pressure difference generated when the venturi tube 98 is working, a negative pressure is formed in the inner cavity of the protective cover 91 through the connecting pipe 99. The protective cover 91 adheres to the patient's abdomen through its own pores, forming a sealed structure. This avoids the problem of disinfection solution leakage during the disinfection process. It prevents the disinfection solution from contaminating the operating table, medical staff clothing and other surrounding environments, and also prevents the leaked disinfection solution from irritating the patient's non-traumatic skin areas, thus improving the cleanliness and safety of the disinfection operation.

[0023] The protective cover 91 has a collection mechanism 10 inside.

[0024] See Figure 2 As shown, one end of the spring 7 is fixedly connected to the top of the piston 6, and the other end of the spring 7 is fixedly connected to the inner wall of the nozzle 2. When medical staff pull the lever 5 to move the piston 6 upward along the inner wall of the nozzle 2 to absorb the disinfectant, the spring 7 will be stretched synchronously and store elastic potential energy. After the absorption action is completed, the lever 5 is released, and the spring 7 will release the elastic potential energy, automatically pulling the piston 6 downward along the inner wall of the nozzle 2 to reset, pushing the disinfectant in the nozzle 2 to be stably output to the nozzle 4, ensuring the stability of the disinfectant output.

[0025] See Figure 3 As shown, the pitch of threaded rod A82 is greater than that of threaded rod B87. Threaded rod A82 is used to drive sliding sleeve A85 and connecting rod A86 to move pull rod 5 axially along nozzle 2, thereby adjusting the stroke of piston 6 to control the output of decontamination liquid in nozzle 2. Threaded rod B87 is used to drive sliding sleeve B88 and adjusting rod 89 to move moving plate 810 along the inner cavity of nozzle 4, thereby adjusting the outlet diameter of nozzle 4.

[0026] See Figure 4As shown, a slide rail 813 is fixed to the outer wall of the nozzle 2, and the outer wall of the adjusting rod 89 slides inside the slide rail 813. The slide rail 813 can restrict the adjusting rod 89 to slide smoothly only along the axial direction.

[0027] See Figures 5 to 6 As shown, a connecting rod B93 slides inside the sleeve 92. A magnetic block A94 is installed at the bottom end of the connecting rod B93, and a magnetic block B95 slides at the bottom end of the sleeve 92. A push rod 96 is fixed at the bottom end of the magnetic block B95, and a push rod 910 is fixed at the top end of the sleeve 92. When the stroke of the piston 6 is adjusted, the position of the magnetic block A94 changes with the connecting rod B93. During subsequent disinfection, a certain gap will be generated between the magnetic block A94 and the magnetic block B95. If the sleeve 92 cannot form a negative pressure through magnetic attraction, medical staff can manually push the push rod 96 to move the magnetic block B95 upward along the inside of the sleeve 92 until the magnetic block B95 and the magnetic block A94 re-contact and are attracted by magnetic force, thereby restoring the attraction relationship between the magnetic blocks A94 and B95 and ensuring that the sleeve 92 can normally complete the negative pressure formation and gas compression actions.

[0028] See Figure 6 As shown, both magnetic blocks A94 and B95 are neodymium iron boron strong magnets, and the magnetic poles of opposite sides of magnetic blocks A94 and B95 are opposite.

[0029] See Figures 7 to 8 As shown, the protective cover 91 has a hollow structure, and multiple sets of air holes are opened at the bottom of the protective cover 91.

[0030] See Figures 5 to 7 As shown, the collection mechanism 10 includes an annular tube 101 located inside the protective cover 91. The outer wall of the annular tube 101 is connected to a suction tube 102 that extends into the protective cover 91. A collection bottle 103 is installed inside the disinfection box 1. A return pipe 104 connects the annular tube 101 and the collection bottle 103. A suction pipe 105 connects the collection bottle 103 to the outer wall of the sleeve 92. A one-way valve is provided at the connection between the sleeve 92 and the air supply pipe 97 and the suction pipe 105.

[0031] It should be noted that during the secondary disinfection process, the pull rod 5 will cause the connecting rod B93 and the magnetic block A94 to move upward again. The magnetic block A94, through the attraction between itself and the magnetic block B95, will cause the magnetic block B95 to move upward again along the inside of the sleeve 92, so that a negative pressure is re-established inside the sleeve 92. This negative pressure is then transmitted to the inside of the collection bottle 103 through the return pipe 104. The annular pipe 101 then uses the suction pipe 102 to suck up the disinfection waste liquid accumulated inside the protective cover 91, and finally collects the waste liquid back into the collection bottle 103 for storage. After a single disinfection is completed, the waste liquid accumulated inside the protective cover 91 is automatically recovered by the negative pressure of the collection bottle 103, eliminating the need for manual cleaning by medical staff. This improves the disinfection efficiency, achieves centralized storage of the disinfection liquid, and facilitates subsequent unified treatment such as harmless treatment or filtration and reuse that meets the conditions, thereby reducing the cost of medical waste liquid treatment and the risk of environmental pollution.

[0032] See Figure 2 As shown, the outer wall of the nozzle 2 is made of transparent glass. A one-way valve is provided at the connection between the nozzle 2 and the infusion tube 3 and the nozzle 4. The transparent glass material allows medical staff to directly observe the single output volume of the disinfectant in the nozzle 2, which is convenient for precise control of the dosage according to the depth of the wound, avoiding waste or insufficient dosage. The one-way valve at the connection can restrict the one-way flow of the disinfectant and prevent the disinfectant from flowing back.

[0033] Working principle: When medical staff perform disinfection operations according to the required depth of the abdominal wound, they rotate knob 83 clockwise or counterclockwise, causing the threaded rod A82 to rotate. Because the threads on the outer wall of the threaded rod A82 mesh with the slider 84, which is limited by the inner wall of the housing 81, the slider 84 moves up and down along the axial direction of the threaded rod A82. The sliding sleeve A85, which is linked to the slider 84 and movably sleeved on the surface of the threaded rod A82, moves synchronously with the slider 84. A85 then drives the pull rod 5 and piston 6 to slide along the inner cavity of the nozzle 2 via the connecting rod A86. When the slider 84 moves upward, the sliding sleeve A85 will pull the pull rod 5 and piston 6 upward, which increases the volume formed by the piston 6 and the bottom of the nozzle 2, thereby reducing the amount of decontamination liquid output when the pull rod 5 is pressed once. When the slider 84 moves downward, the sliding sleeve A85 pushes the pull rod 5 and piston 6 downward, reducing the volume of the piston 6 and the bottom of the nozzle 2, thereby increasing the amount of decontamination liquid output when the pull rod 5 is pressed once. Meanwhile, as knob 83 drives threaded rod A82 to rotate, knob 83 also drives threaded rod B87 to rotate synchronously, causing sliding sleeve B88 to move up and down along the axial direction of threaded rod B87. Sliding sleeve B88 further drives adjusting rod 89 to move. The movement of adjusting rod 89 pushes moving plate 810 to slide in the inner cavity of nozzle 4. Moving plate 810 then drives ball 812 to move synchronously via vertical rod 811. Since the threads on the surfaces of threaded rod A82 and threaded rod B87 are designed in the same direction, when sliding sleeve A85 moves upward, causing sliding sleeve B88 to move upward synchronously, adjusting rod 89 pulls moving plate 810 upward, and vertical rod 811 subsequently drives ball 812 to move upward. 12 moves upward, shortening the distance between the sphere 812 and the spray hole of the nozzle 4. The flow channel of the spray hole is partially blocked by the sphere 812, and the decontamination liquid needs to be squeezed out at high speed from the gap between the sphere 812 and the nozzle 4. The fluid generates strong turbulence in the gap. After being sprayed out, it collides and breaks rapidly with the fluid, forming a fine water mist. When the sliding sleeve B88 moves downward, the adjusting rod 89 pushes the moving plate 810 downward, and the vertical rod 811 drives the sphere 812 downward, increasing the distance between the sphere 812 and the spray hole of the nozzle 4. The blocking effect of the sphere 812 on the fluid is weakened, and the decontamination liquid can flow smoothly out along the axis of the spray hole and flow downward along the surface of the sphere 812, forming a continuous columnar flow. After the piston 6's stroke is adjusted, medical staff pull rod 5, causing piston 6 to move upwards along the inside of nozzle 2. The upward movement of piston 6 creates negative pressure inside nozzle 2, drawing a measured amount of disinfectant solution from the storage bottle through infusion tubing 3. At this time, medical staff attach the protective cover 91 to the patient's abdominal wound. As rod 5 moves upwards, it simultaneously moves connecting rod B93 upwards, which in turn moves magnetic block A94 upwards. Due to the mutual attraction between magnetic blocks A94 and B95, magnetic block A94 causes magnetic block B95 to move upwards synchronously along the inside of sleeve 92. The upward movement of magnetic block B95 creates negative pressure inside sleeve 92. The gas inside the collection bottle 103 is drawn in through the suction tube 105. When the magnetic block B95 rises to a specific position, its top end contacts the bottom end of the push rod 910. The push rod 910 pushes the magnetic block B95 to separate from the magnetic block A94. The magnetic block B95, which loses its attraction force, squeezes the gas inside the sleeve 92 under its own restoring force. The squeezed gas enters the Venturi tube 98 along the gas delivery tube 97 and is discharged from one end of the Venturi tube 98. Using the pressure difference generated when the Venturi tube 98 is working, a negative pressure is formed in the inner cavity of the protective cover 91 through the connecting tube 99. The protective cover 91 is adsorbed on the patient's abdomen through its own pores. During the secondary decontamination process, the pull rod 5 will cause the connecting rod B93 and the magnetic block A94 to move upward again. The magnetic block A94, through the attraction between itself and the magnetic block B95, will cause the magnetic block B95 to move upward again along the inside of the sleeve 92, so that a negative pressure is re-established inside the sleeve 92. The negative pressure inside the sleeve 92 is then transmitted to the inside of the collection bottle 103. This negative pressure will be transmitted to the inside of the annular tube 101 through the return pipe 104. The annular tube 101 will then suck up the decontamination waste liquid accumulated inside the protective cover 91 through the suction pipe 102, and finally the waste liquid will be recycled into the collection bottle 103 for storage.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is 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. An abdominal disinfection device for trauma surgery, comprising a disinfection box (1) and a spray nozzle (2), characterized in that: An infusion tube (3) is inserted into the side wall of the nozzle (2), a nozzle (4) is installed at the bottom end of the nozzle (2), a piston (6) slides inside the nozzle (2), a pull rod (5) is fixed at the top of the piston (6), and a spring (7) is sleeved on the outer wall of the pull rod (5). An adjustment mechanism (8) is provided on the outside of the nozzle (2). The adjustment mechanism (8) includes a housing (81) fixed to the outer wall of the nozzle (2). A threaded rod A (82) is rotatably mounted inside the housing (81). A knob (83) is fixed to the bottom end of the threaded rod A (82). A slider (84) is threadedly connected to the outer wall of the threaded rod A (82). A sliding sleeve A (85) is movably mounted on the surface of the threaded rod A (82). The pull rod (5) is fixed to the sliding sleeve A (85). There is a connecting rod A (86), and a threaded rod B (87) is fixed at the bottom of the knob (83). A sliding sleeve B (88) is threadedly connected to the outer wall of the threaded rod B (87). A moving plate (810) is provided in the inner cavity of the nozzle (4). A vertical rod (811) penetrating the nozzle (4) is fixed at the bottom of the moving plate (810). A ball (812) is fixed at the bottom of the vertical rod (811). An adjusting rod (89) is fixed between the sliding sleeve B (88) and the moving plate (810). The nozzle (2) is provided with a protective mechanism (9) at its bottom end. The protective mechanism (9) includes a protective cover (91) sleeved on the bottom end of the nozzle (2). A sleeve (92) is fixed on the outer wall of the nozzle (2). An air supply pipe (97) is connected to the outer wall of the sleeve (92). One end of the air supply pipe (97) is connected to a venturi tube (98). A connecting pipe (99) is connected between the protective cover (91) and the venturi tube (98). The protective cover (91) is equipped with a collection mechanism (10) inside.

2. The abdominal decontamination device for trauma surgery according to claim 1, characterized in that: One end of the spring (7) is fixedly connected to the top of the piston (6), and the other end of the spring (7) is fixedly connected to the inner wall of the nozzle (2).

3. The abdominal decontamination device for trauma surgery according to claim 1, characterized in that: The pitch of the threaded rod A (82) is greater than that of the threaded rod B (87). The threaded rod A (82) is used to drive the sliding sleeve A (85) and the connecting rod A (86) to move the pull rod (5) axially along the nozzle (2) to adjust the stroke of the piston (6) and control the output of the decontamination liquid in the nozzle (2). The threaded rod B (87) is used to drive the sliding sleeve B (88) and the adjusting rod (89) to move the moving plate (810) along the inner cavity of the nozzle (4) to adjust the outlet diameter of the nozzle (4).

4. The abdominal decontamination device for trauma surgery according to claim 1, characterized in that: The outer wall of the nozzle (2) is fixed with a slide rail (813), and the outer wall of the adjusting rod (89) slides inside the slide rail (813).

5. The abdominal decontamination device for trauma surgery according to claim 1, characterized in that: A connecting rod B (93) slides inside the sleeve (92), a magnetic block A (94) is installed at the bottom end of the connecting rod B (93), a magnetic block B (95) slides inside the bottom end of the sleeve (92), a push rod (96) is fixed at the bottom end of the magnetic block B (95), and a top rod (910) is fixed at the top end of the sleeve (92).

6. The abdominal decontamination device for trauma surgery according to claim 5, characterized in that: Both magnetic block A (94) and magnetic block B (95) are neodymium iron boron strong magnets, and the magnetic poles of the opposite sides of magnetic block A (94) and magnetic block B (95) are opposite.

7. The abdominal decontamination device for trauma surgery according to claim 1, characterized in that: The protective cover (91) has a hollow structure, and multiple sets of air holes are opened at the bottom of the protective cover (91).

8. The abdominal decontamination device for trauma surgery according to claim 1, characterized in that: The collection mechanism (10) includes an annular tube (101) located inside the protective cover (91). The outer wall of the annular tube (101) is connected to a suction tube (102) that extends into the protective cover (91). A collection bottle (103) is installed inside the disinfection box (1). A return pipe (104) is connected between the annular tube (101) and the collection bottle (103). A suction pipe (105) is connected between the collection bottle (103) and the outer wall of the sleeve (92). A one-way valve is provided at the connection between the sleeve (92) and the gas supply pipe (97) and the suction pipe (105).

9. The abdominal decontamination device for trauma surgery according to claim 1, characterized in that: The outer wall of the nozzle (2) is made of transparent glass, and a one-way valve is provided at the connection between the nozzle (2) and the infusion tube (3) and the nozzle (4).

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