Lumbar cistern drainage anti-infection decompression external fixing device

Abstract

The invention discloses a lumbar cistern drainage anti-infection decompression external fixing device, which belongs to the field of medical devices, is used for medical treatment, and comprises a drainage bottle, an adjusting fixing plate, a support rod and a base, the drainage bottle forms a disinfectant chamber through a partition plate in the bottle, and a drainage tube is respectively connected with the drainage chamber and a dressing box; the dressing box is provided with a dressing cavity which is provided with dressing and is communicated with the disinfection tube; the dressing box is provided with a leading-out hole for the drainage tube to penetrate through, the dressing box is provided with a guide piece in the leading-out direction of the drainage tube, the guide piece is located on one side of the leading-out hole, and the other side of the leading-out hole is provided with a protection piece; the disinfection tube is communicated with a disinfectant chamber in the drainage bottle through a pumping device; and the drainage chamber in the drainage bottle is also communicated with a liquid discharge pipe. The lumbar cistern drainage tube can be fixed under reduced pressure, the laying position of the drainage tube is disinfected, infection is avoided, the drainage pressure is conveniently adjusted, and liquid in the drainage bottle is prevented from polluting the external environment in the adjusting process.

Description

Technical Field

[0001] This application belongs to the field of medical devices, and more specifically, relates to a lumbar cistern drainage, anti-infection, decompression, and external fixation device. Background Technology

[0002] In the treatment of hydrocephalus, intracranial infection, ruptured aneurysm, etc., lumbar cistern drainage may be used to relieve symptoms such as hydrocephalus. For example, Chinese patent publication number CN215082819U discloses a lumbar cistern drainage device with decompression and fixation functions, and specifically discloses the following technical solution: the drainage device includes a lumbar patch, a spinal patch, and a shoulder patch made of decompression dressing. The shoulder patch and the spinal patch are arranged in a T-shape. The lumbar patch is placed below the spinal patch. The back of the lumbar patch, the spinal patch, and the shoulder patch is an adhesive layer. The surface of the spinal patch and the shoulder patch is provided with a limiting groove. A transparent layer is provided on the top of the lumbar patch, the spinal patch, and the shoulder patch.

[0003] Meanwhile, Chinese patent publication CN118236610A discloses a lumbar sac drainage device, specifically disclosing the following technical solution: The lumbar sac drainage device includes a drainage device and a drainage speed controller. The drainage device includes a drip pot, a second conduit, a suction cylinder, and a control valve. The drip pot has a drip pot air inlet pipe. The suction cylinder includes a cylinder body, a piston, and a piston rod. The inner cavities of the cylinder body on both sides of the piston are a rod chamber and a rodless chamber, respectively. The control valve has a control valve air inlet pipe. The drip pot, the rod chamber, and the rodless chamber are respectively connected to the control valve. The control valve can control one of the rod chamber and the rodless chamber to be connected to the drip pot while the other is connected to the control valve air inlet pipe. The drainage speed controller includes a suction cylinder driver, a control valve driver, a fixing structure, and a pipe clamp. The drip pot, the suction cylinder, and the control valve are fixed on the fixing structure. The suction cylinder driver is connected to the suction cylinder. The control valve driver is connected to the control valve. The second conduit and the drip pot air inlet pipe are placed in the pipe clamp.

[0004] However, the applicant argues that the aforementioned technical solution does not include a protective structure at the point where the drainage tube exits the skin, nor does it improve the structure of the drainage tube or drainage bottle to achieve better disinfection and prevent infection. Furthermore, it does not allow for the adjustment of the environment inside the drainage bottle to avoid the impact on the external environment and the internal environment of the drainage bottle during the environmental adjustment process. Summary of the Invention

[0005] The purpose of this application is to provide an external fixation device for lumbar sac drainage with anti-infection and decompression, which can achieve decompression and fixation of the lumbar sac drainage tube, disinfect the location where the drainage tube is laid to avoid infection, facilitate the adjustment of drainage pressure, and prevent the liquid in the drainage bottle from contaminating the external environment during the adjustment process.

[0006] To achieve the above objectives, this application employs the following technical solution: The external fixation device for lumbar sac drainage, anti-infection, and decompression described in this application includes a drainage bottle, which is mounted on an adjustment and fixing plate. The adjustment and fixing plate is connected to a base via a support rod. A drainage tube is mounted on the drainage bottle. An internal partition divides the inner cavity of the drainage bottle into a disinfectant chamber and a drainage chamber. The drainage tube communicates with the drainage chamber. A dressing box is provided at the skin contact point of the drainage tube, covering the point where the drainage tube exits the skin. A dressing cavity is provided on the skin-facing side of the dressing box, containing a dressing. This dressing cavity communicates with the disinfectant tube. The dressing box has an outlet hole for the drainage tube to pass through. A guide is provided in the direction of the drainage tube's exit, located on one side of the outlet hole, and a protective element is provided on the other side. The disinfectant tube communicates with the disinfectant chamber inside the drainage bottle via a pumping device. The drainage chamber inside the drainage bottle is also connected to a drain pipe.

[0007] As one of the preferred technical solutions, the dressing box described in this application is provided with upper fixing members on both sides of the guide member, and the dressing box is provided with lower fixing members on both sides of the protective member. The upper fixing members and the lower fixing members are connected to the skin by adhesive restraint straps.

[0008] As one of the preferred technical solutions, the dressing box described in this application has a medical adhesive pad at the edge of the dressing cavity; the disinfection tube has several through holes on its wall extending into the dressing cavity, and the disinfection tube is coiled inside the dressing cavity.

[0009] As one of the preferred technical solutions, the disinfection tubes described in this application are arranged on both sides of the drainage tube and connected to the drainage tube through guide fixing members; there are multiple guide fixing members and they are distributed along the length of the drainage tube.

[0010] As one of the preferred technical solutions, the guide fixing component described in this application includes a fixing body that snaps into the outer wall of the drainage tube. The fixing body has a drainage slot at the middle position and disinfection slots on both sides of the drainage slot. A guide limiting hole formed by a through hole penetrating the fixing body is provided between the drainage slot and the disinfection slot. The fixing body has a guide opening at the end. Several reinforcing ribs are provided on the outer side of the drainage slot.

[0011] As one of the preferred technical solutions, the drainage bottle described in this application is provided with bottle body sliders on both sides. The bottle body sliders are slidably disposed on the adjustment slide plate. The adjustment slide plate is provided with a plurality of adjustment holes in the length direction. The adjustment holes are threadedly connected to the fixing knobs. After the fixing knobs are screwed into the adjustment holes, they are in contact with the bottle body sliders.

[0012] As one of the preferred technical solutions, the top opening of the drainage bottle described in this application is sealed and fixed with a drainage cap. The drainage cap is provided with a drainage tube, a disinfection one-way valve, and a disinfection tube. The drainage tube is connected to the drainage chamber inside the drainage bottle. The disinfection one-way valve and the disinfection tube are connected to the disinfectant chamber. The disinfection one-way valve allows external air to be filtered and sent into the disinfectant chamber.

[0013] As one of the preferred technical solutions, the drainage bottle described in this application has a plurality of silicone capsules arranged on the inner partition of the bottle, and the silicone capsules are located in the drainage chamber; the silicone capsules are elastic hollow cylinders, and the top of the silicone capsules are connected to the bottom of the negative pressure regulator through a negative pressure connecting pipe; the negative pressure regulator is located at the top of the drainage cover, and a piston plate with the same cross-section as the negative pressure regulator is arranged inside the negative pressure regulator, and the top of the piston plate is connected to the negative pressure lifter through a telescopic rod; the negative pressure lifter is connected to the top of the negative pressure regulator.

[0014] As one of the preferred technical solutions, the drainage cover described in this application is further provided with a pressure balancing tube, which is connected to the drainage chamber and is sealed by a plug.

[0015] Compared with the prior art, the beneficial effects of this application are: This application enables the guidance, pressure reduction, and fixation of the lumbar sac drainage tube by setting up a dressing box and dressing. Furthermore, the dressing, disinfection tube, pumping device, and disinfectant chamber are used to disinfect the drainage tube installation location, preventing infection. The drainage pressure in the drainage chamber is regulated through the structural design of the drainage chamber and silicone capsule, and the regulation process prevents the liquid in the drainage bottle from contaminating the external environment. Attached Figure Description

[0016] Figure 1 The dressing box, drainage tube, and disinfection tube in this application are three-dimensional structures. Figure 1 .

[0017] Figure 2 The dressing box, drainage tube, and disinfection tube in this application are three-dimensional structures. Figure 2 .

[0018] Figure 3 The dressing box, drainage tube, and disinfection tube in this application are three-dimensional structures. Figure 3 .

[0019] Figure 4 It is a three-dimensional guide fastener in this application. Figure 1 .

[0020] Figure 5 It is a three-dimensional guide fastener in this application. Figure 2 .

[0021] Figure 6It is a three-dimensional structure consisting of a drainage bottle, support rod, adjustment and fixing plate, and base. Figure 1 .

[0022] Figure 7 It is a three-dimensional structure consisting of a drainage bottle, support rod, adjustment and fixing plate, and base. Figure 2 .

[0023] Figure 8 This is the front view of the drainage bottle, support rod, adjustment and fixing plate, and base.

[0024] Figure 9 yes Figure 8 A cross-sectional view at the position and direction shown in AA.

[0025] Figure 10 yes Figure 8 A cross-sectional view at the position and direction shown in BB.

[0026] In the diagram: 1. Dressing box; 2. Upper fixing component; 3. Lower fixing component; 4. Protective component; 5. Drainage tube; 6. Drainage hole; 7. Guide component; 8. Auxiliary tube; 9. Sterilization tube; 10. Guide fixing component; 11. Dressing cavity; 12. Medical adhesive pad; 13. Guide slot; 14. Base; 15. Support rod; 16. Adjustment fixing plate; 17. Adjustment slide plate; 18. Fixing knob; 19. Adjustment hole; 20. Drainage bottle; 21. Inner partition of the bottle; 22. Pressure balancing tube; 23. Negative pressure lifter; 24. Negative pressure adjuster; 25. Sterilization one-way valve; 26. Drainage tube; 27. Piston plate; 28. Negative pressure connecting tube; 29. ​​Silicone capsule body; 30. Bottle body slider; 31. Drainage slot; 32. Sterilization slot; 33. Guide limiting hole; 34. Fixing body; 35. Reinforcing rib; 36. Drainage cap. Detailed Implementation

[0027] The technical solutions described in this application will be further described below with reference to the accompanying drawings and embodiments. Example

[0028] See Figures 1 to 10A lumbar sac drainage, anti-infection, decompression, and external fixation device includes a drainage bottle 20, which is mounted on an adjusting and fixing plate 16. The adjusting and fixing plate 16 is connected to a base 14 via a support rod 15. A drainage tube 5 is mounted on the drainage bottle 20. An internal partition 21 is provided inside the drainage bottle 20, dividing the inner cavity of the drainage bottle 20 into a disinfectant chamber and a drainage chamber. The drainage tube 5 communicates with the drainage chambers. A dressing box 1 is provided at the point where the drainage tube 5 contacts the skin, covering the point where the drainage tube 5 exits the skin. The dressing box 1 has a dressing chamber 11 on the side facing the skin, and a dressing is placed inside the dressing chamber 11. The dressing chamber 11 is connected to the disinfection tube 9. The dressing box 1 has an outlet hole 6 for the drainage tube 5 to pass through. The dressing box 1 has a guide 7 in the direction of the drainage tube 5. The guide 7 is located on one side of the outlet hole 6, and a protective member 4 is provided on the other side of the outlet hole 6. The disinfection tube 9 is connected to the disinfectant chamber in the drainage bottle 20 through a pumping device. The drainage chamber in the drainage bottle 20 is also connected to a drain pipe 26, and a shut-off valve is provided on the drain pipe 26.

[0029] In this embodiment, the drainage bottle 20 is used to temporarily hold the drainage liquid and generate a negative pressure environment so as to adjust the drainage speed.

[0030] In this embodiment, the drainage bottle 20 is disposed on the adjustment and fixing plate 16, and the adjustment and fixing plate 16 is provided with a plurality of strip-shaped connecting holes. The strip-shaped connecting holes on the adjustment and fixing plate 16 can realize the connection of accessories such as pumping devices, as well as the connection of support rod 15 and base 14, and realize the fine adjustment of the position of drainage bottle 20.

[0031] In this embodiment, the support rod 15 connects to the adjustment fixing plate 16.

[0032] In this embodiment, the base 14 is used to support the support rod 15 and the adjustment fixing plate 16, and the base 14 can also serve as a counterweight for the above structure.

[0033] In this embodiment, the drainage bottle 20 is provided with an internal partition 21, which divides the drainage bottle 20 into two independent chambers: a drainage chamber and a disinfectant chamber. The drainage chamber is connected to the drainage tube 5, and the disinfectant chamber is connected to the disinfection tube 9.

[0034] In this embodiment, the dressing box 1 is used to achieve contact with the skin, which can protect the protrusion position of the disinfection tube 9, guide and protect the disinfection tube 9, and fix the dressing box 1 to the skin.

[0035] In this embodiment, the dressing box 1 has a dressing cavity 11, which is filled with dressing to disinfect the disinfectant at the exit point of the drainage tube 5. The dressing cavity 11 can cooperate with the disinfection tube 9 to achieve uniform distribution of the disinfectant.

[0036] In this embodiment, the outlet hole 6 enables the drainage tube 5 to pass through and bend.

[0037] In this embodiment, the protective component 4 and the guide component 7 protect the drainage tube 5. Both the protective component 4 and the guide component 7 consist of paired L-shaped integral parts. The guide component 7 forms a space to accommodate the drainage tube 5, and the tops of the protective component 4 and the guide component 7 are flush. A through hole is provided on the guide component 7 to allow for the installation of a U-shaped housing. The U-shaped housing protects the drainage tube 5 between the protective component 4 and the guide component 7.

[0038] In this embodiment, the drainage tube 5 is also integrally provided with an auxiliary tube 8 for sampling or drug injection, and the auxiliary tube 8 has a sealing body at its tail end.

[0039] In this embodiment, other auxiliary components from the prior art can be provided on the drainage tube 5, such as... In this embodiment, the disinfection tube 9 is used to deliver the disinfectant solution. The disinfectant solution is pumped through the pumping device to deliver the disinfectant solution in the drainage bottle 20 to the dressing position, so as to achieve the soaking of the dressing and disinfection of the skin at the corresponding position of the dressing. Example

[0040] See Figures 1 to 10This is a lumbar drainage, anti-infection, decompression, and external fixation device. Based on Example 1, the dressing box 1 has upper fixation members 2 on both sides of the guide member 7, and lower fixation members 3 on both sides of the protective member 4. The upper and lower fixation members 2 and 3 are connected to the skin via adhesive restraint straps. The dressing box 1 has a medical adhesive pad 12 at the edge of the dressing cavity 11. The disinfection tube 9 has several through holes on its wall extending into the dressing cavity 11, and is coiled within the dressing cavity 11. The disinfection tubes 9 are arranged on both sides of the drainage tube 5 and connected to the drainage tube 5 via guide fixation members 10. Multiple guide fixation members 10 are distributed along the length of the drainage tube 5. Each guide fixation member 10 includes a fixing body 34 that engages with the outer wall of the drainage tube 5. The fixing body 34 has a drainage slot 31 at its center, and the fixing body 34 has drainage slots 31 on both sides of the drainage slots 31. The device includes a disinfection slot 32, a guide limiting hole 33 formed by a through hole penetrating the fixing body 34 between the drainage slot 31 and the disinfection slot 32, and a guide bayonet 13 at the end of the fixing body 34; the outer side of the drainage slot 31 is provided with several reinforcing ribs 35; bottle body sliders 30 are provided on both sides of the drainage bottle 20, the bottle body sliders 30 are slidably mounted on the adjustment slide plate 17, the adjustment slide plate 17 is provided with several adjustment holes 19 in the length direction, the adjustment holes 19 are threadedly connected to the fixing knob 18, and the fixing knob 18 is screwed into the adjustment hole 19 and then abuts against the bottle body slider 30.

[0041] In this embodiment, the upper fixing member 2 can cooperate with the connected bandage to achieve fixation at the body position through the bandage.

[0042] In this embodiment, the lower fixing member 3 can cooperate with the connected bandage to achieve fixation at the body position via the bandage. In this application, a bandage with an adhesive layer can be used.

[0043] In this embodiment, the dressing box 1 has a medical pad 12 at the edge of the dressing cavity 11. The medical pad 12 is a rectangular ring that matches the shape of the dressing box 1. It can prevent excess disinfectant from leaking out of the dressing and ensure the tightness between the dressing box 1 and the skin.

[0044] In this embodiment, the disinfection tube 9 can be provided with several through holes on the tube wall inside the dressing cavity 11 so that the disinfectant is distributed evenly on the dressing to the greatest extent. The disinfection tube 9 is coiled inside the dressing cavity 11 to help achieve the distribution of the disinfectant.

[0045] In this embodiment, the disinfection tube 9 consists of two thinner tubes distributed on both sides of the drainage tube 5, and can be connected to the drainage tube 5 via a snap-fit ​​guide fixing member 10. The number of the guide fixing members 10 is set along the length of the disinfection tube 9 and the drainage tube 5 according to the specific situation.

[0046] In this embodiment, the guide fixing member 10 has disinfection slots 32 on both sides that engage with the disinfection tube 9, and a drainage slot 31 at the middle position of the guide fixing member 10 that engages with the drainage tube 5. Reinforcing ribs 35 are provided at the arc-shaped walls on both sides of the drainage slot 31. Both the drainage slot 31 and the disinfection slot 32 are located on the fixing body 34. The fixing body 34 has a guide limiting hole 33 at the position between the drainage slot 31 and the disinfection slot 32. A bent guide rod can be inserted into the guide limiting hole 33; the rod can be a plastic rod or a metal rod.

[0047] In this embodiment, the fixing body 34 is provided with a guide slot 13 on the bottom end face away from the drainage slot 31. A long strip plate can be provided in the guide slot 13. The long strip plate is engaged with the guide slot 13 through the slot. In addition to fixing the spacing of the guide fixing member 10, the long strip plate can also protect the drainage tube 5.

[0048] In this embodiment, the adjustment hole 19 and the fixing knob 18 can adjust the position of the bottle slider 30 relative to the adjustment fixing plate 16. Example

[0049] See Figures 1 to 10 The lumbar sac drainage anti-infection decompression external fixation device, based on Example 2, has a drainage cap 36 sealed at the top opening of the drainage bottle 20. The drainage cap 36 is equipped with a drainage tube 5, a disinfection one-way valve 25, and a disinfection tube 9. The drainage tube 5 communicates with the drainage chamber inside the drainage bottle 20, and the disinfection one-way valve 25 and disinfection tube 9 communicate with the disinfectant chamber. The disinfection one-way valve 25 allows filtered external air to be introduced into the disinfectant chamber. The drainage bottle 20 has several silicone capsules 29 arranged on the inner partition 21, and the silicone capsules 29 are located within the drainage chamber. The capsule body 29 is an elastic hollow cylinder. The top of the silicone capsule body 29 is connected to the bottom of the negative pressure regulator 24 through the negative pressure connecting pipe 28. The negative pressure regulator 24 is located at the top of the drainage cover 36. A piston plate 27 with the same cross-section as the negative pressure regulator 24 is provided inside the negative pressure regulator 24. The top of the piston plate 27 is connected to the negative pressure lifter 23 through a telescopic rod. The negative pressure lifter 23 is connected to the top of the negative pressure regulator 24. A pressure balance pipe 22 is also provided on the drainage cover 36. The pressure balance pipe 22 is connected to the drainage chamber and is sealed by a plug.

[0050] In this embodiment, the drainage cap 36 can seal and fix the top opening of the drainage bottle 20, and facilitates the fixing of the disinfection one-way valve 25, the drainage tube 5, and the disinfection tube 9.

[0051] In this embodiment, the drainage tube 5 is connected to the drainage chamber inside the drainage bottle 20, and the disinfection one-way valve 25 and the disinfection tube 9 are respectively connected to the disinfectant chamber inside the drainage bottle 20.

[0052] In this embodiment, a silicone capsule 29 is fixedly provided on the side of the inner partition 21 facing the drainage chamber. There are multiple silicone capsules 29, and they are respectively connected to the negative pressure regulator 24 through a negative pressure connecting pipe 28 with a sealed top.

[0053] In this embodiment, the bottom end of the negative pressure adjuster 24 is fixedly mounted on the drainage cover 36. A piston plate 27 with the same cross-section is disposed inside the negative pressure adjuster 24. The piston plate 27 can be lifted relative to the negative pressure adjuster 24 by the lifting action of the negative pressure lifter 23 and its telescopic rod. Under the lifting action of the negative pressure adjuster 24, a negative pressure space is formed between the piston plate 27 and the bottom surface of the negative pressure adjuster 24. Since it is connected to the silicone capsule body 29 through the negative pressure connecting pipe 28, a negative pressure environment is formed inside the drainage bottle 20.

[0054] In this embodiment, the silicon capsule 29 needs to be in an expanded state in the initial state. Under the action of the negative pressure booster 23, the negative pressure adjuster 24, and the negative pressure connecting pipe 28, the volume of the silicon capsule 29 is reduced, thereby forming a negative pressure controllable environment in the drainage chamber of the drainage bottle 20. Furthermore, the silicon capsule 29 can isolate its internal gas from the drainage chamber, avoiding the influence of the liquid in the drainage bottle 20 on the external environment and the device.

[0055] In this embodiment, the pressure balancing tube 22 can assist the drainage bottle 20 in discharging liquid.

[0056] Finally, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A lumbar sac drainage, anti-infection, decompression, and external fixation device, comprising a drainage bottle (20), the drainage bottle (20) being mounted on an adjusting and fixing plate (16), the adjusting and fixing plate (16) being connected to a base (14) via a support rod (15), and a drainage tube (5) being mounted on the drainage bottle (20), characterized in that, The drainage bottle (20) is equipped with an internal partition (21), which divides the inner cavity of the drainage bottle (20) into a disinfectant chamber and a drainage chamber. The drainage tube (5) is connected to the drainage chamber, and a dressing box (1) is provided at the position where the drainage tube (5) contacts the skin. The dressing box (1) covers the position where the drainage tube (5) exits the skin. A dressing cavity (11) is provided on the side of the dressing box (1) facing the skin. A dressing is provided in the dressing cavity (11). The dressing cavity (11) contains a dressing. 1) Connected to the disinfection tube (9); the dressing box (1) is provided with an outlet hole (6) for the drainage tube (5) to pass through, and the dressing box (1) is provided with a guide (7) in the direction of the drainage tube (5). The guide (7) is located on one side of the outlet hole (6), and a protective part (4) is provided on the other side of the outlet hole (6); the disinfection tube (9) is connected to the disinfection liquid chamber in the drainage bottle (20) through a pumping device; the drainage chamber in the drainage bottle (20) is also connected to a drain pipe (26).

2. The external fixation device for lumbar sac drainage, anti-infection, and decompression according to claim 1, characterized in that, The dressing box (1) has upper fixing members (2) on both sides of the guide (7) and lower fixing members (3) on both sides of the protective member (4). The upper fixing members (2) and lower fixing members (3) are connected to the skin by adhesive restraint straps.

3. The external fixation device for lumbar sac drainage, anti-infection, and decompression according to any one of claims 1 to 2, characterized in that, The dressing box (1) has a medical pad (12) at the edge of the dressing cavity (11); the disinfection tube (9) has several through holes on the tube wall that extends into the dressing cavity (11), and the disinfection tube (9) is coiled inside the dressing cavity (11).

4. The external fixation device for lumbar sac drainage, anti-infection, and decompression according to claim 3, characterized in that, The disinfection tubes (9) are arranged on both sides of the drainage tube (5) and connected to the drainage tube (5) through the guide fixing parts (10); there are multiple guide fixing parts (10) and they are distributed along the length of the drainage tube (5).

5. The external fixation device for lumbar sac drainage, anti-infection, and decompression according to claim 4, characterized in that, The guide fixing component (10) includes a fixing body (34) that is snapped into the outer wall of the drainage tube (5). The fixing body (34) has a drainage slot (31) at the middle position and disinfection slots (32) on both sides of the drainage slot (31). A guide limiting hole (33) formed by a through hole penetrating the fixing body (34) is provided between the drainage slot (31) and the disinfection slot (32). The fixing body (34) has a guide opening (13) at the end. The outer side of the drainage slot (31) is provided with several reinforcing ribs (35).

6. The external fixation device for lumbar sac drainage, anti-infection, and decompression according to claim 5, characterized in that, The drainage bottle (20) is provided with bottle body sliders (30) on both sides. The bottle body sliders (30) are slidably disposed on the adjustment plate (17). The adjustment plate (17) is provided with a plurality of adjustment holes (19) in the length direction. The adjustment holes (19) are threadedly connected to the fixing knob (18). After the fixing knob (18) is screwed into the adjustment hole (19), it is in contact with the bottle body slider (30).

7. The external fixation device for lumbar sac drainage, anti-infection, and decompression according to claim 1, characterized in that, The top opening of the drainage bottle (20) is sealed with a drainage cap (36). The drainage cap (36) is provided with a drainage tube (5), a disinfection one-way valve (25), and a disinfection tube (9). The drainage tube (5) is connected to the drainage chamber inside the drainage bottle (20). The disinfection one-way valve (25) and the disinfection tube (9) are connected to the disinfectant chamber. The disinfection one-way valve (25) allows external air to be filtered and sent into the disinfectant chamber.

8. The external fixation device for lumbar sac drainage, anti-infection, and decompression according to claim 7, characterized in that, The drainage bottle (20) has several silicone capsules (29) on the inner partition (21) of the bottle. The silicone capsules (29) are located in the drainage chamber. The silicone capsules (29) are elastic hollow cylinders. The top of the silicone capsules (29) is connected to the bottom of the negative pressure adjuster (24) through the negative pressure connecting pipe (28). The negative pressure adjuster (24) is located at the top of the drainage cover (36). The negative pressure adjuster (24) is provided with a piston plate (27) with the same cross-section as the negative pressure adjuster (24). The top of the piston plate (27) is connected to the negative pressure lifter (23) through the telescopic rod. The negative pressure lifter (23) is connected to the top of the negative pressure adjuster (24).

9. The external fixation device for lumbar sac drainage, anti-infection, and decompression according to claim 8, characterized in that, The drainage cover (36) is also provided with a pressure balance tube (22), which is connected to the drainage chamber and is sealed by a plug.

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