Pressure-controllable continuous negative pressure drainage device for orthopedic nursing

Abstract

The invention belongs to the technical field of orthopedic nursing, and discloses an orthopedic nursing pressure-controllable continuous negative pressure drainage device which comprises a U-shaped frame, a bottom plate is fixed to the bottom of the U-shaped frame, a positioning plate is slidably arranged at the position, close to the top, in the U-shaped frame, and a drainage assembly is assembled at the top of the positioning plate. Through the arrangement of the drainage assembly, the locking effect between the guide cylinder and the liquid collection bottle is quickly relieved, the time spent on replacing the lock of the full liquid collection bottle is short, the drainage working efficiency is improved in a disguised mode, the liquid collection bottle replacement steps are indirect, extra pain on a wound of a patient can be avoided, and the drainage effect is improved. Meanwhile, by means of the efficient dinner cleaning effect of the disposable bag body, when the sealing cap is in butt joint with the liquid collecting bottle, the adsorption effect on the disposable bag body is achieved, the bag body is in the opening maximized state, it is avoided that liquid drained today and night is blocked, and the space in the liquid collecting bottle can be fully utilized.

Description

Technical Field

[0001] The present invention relates to the technical field, and in particular to a continuous negative pressure drainage device with controllable pressure for orthopedic care. Background Art

[0002] Negative pressure drainage devices are required for postoperative care in orthopedics. They are mostly used for major orthopedic surgery, large-area subcutaneous soft tissue injuries, infectious bone and joint diseases, etc. In addition to maintaining drainage, they can also generate negative pressure in the wound area, maintain more efficient drainage, fit the wound surface, reduce exudation, and prevent skin flaps from floating. They have been accepted by most doctors. This technology not only reduces the use of antibiotics, effectively reduces nosocomial cross-infection, and shortens hospital stays, but also eliminates the need for daily dressing changes, which relieves patients from the pain of dressing changes and medical staff from the labor of frequent dressing changes. At the same time, it greatly relieves patients' psychological pressure.

[0003] A search of the prior art (CN113521403 B) discloses a controllable pressure continuous negative pressure drainage device for orthopedic care. The two movable blocks 2 are driven to move closer or farther from each other by adjusting the bidirectional screw rod. The hinged action between the movable block 2, the connecting rod and the placement seat is coordinated. Under the support and limiting action of the guide rail and the guide block, the drainage collection bottle on the placement seat is driven to rise or fall. The threaded connection between the internal thread block and the liquid outlet pipe and the liquid inlet pipe can realize convenient installation and disassembly of the drainage collection bottle, and avoid the situation where the drainage collection bottle is unstable and tipped over, causing liquid overflow, thereby realizing convenient replacement of the drainage collection bottle. The drainage collection bottle has good stability and improved work efficiency.

[0004] However, the above technical solution has certain shortcomings. Since the internal capacity of the drainage bottle is limited, the drainage bottle filled with accumulated fluid needs to be replaced, and the drainage collecting bottle is connected to the drainage tube by a threaded manner, which leads to a long time for replacing the drainage collecting bottle and even causes extra pain to the patient. In addition, the accumulated fluid drained into the drainage collecting bottle has a certain viscosity, which makes it difficult to clean the drainage collecting bottle after replacement, creating a burden for manual cleaning work. Therefore, a continuous negative pressure drainage device with controllable pressure for orthopedic nursing is proposed. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a continuous negative pressure drainage device with controllable pressure for orthopedic care, which can.

[0006] The present invention also provides a controllable pressure continuous negative pressure drainage device for orthopedic care, comprising: a U frame, a bottom plate fixed to the bottom of the U frame, a positioning plate slidingly provided near the top of the U frame, and a drainage component mounted on the top of the positioning plate;

[0007] The drainage assembly includes a guide tube that passes through the bottom of the positioning plate, the bottom of the positioning plate is equipped with a negative pressure structure connected to the top of the guide tube, the bottom of the guide tube is funnel-shaped, and the bottom of the drainage assembly is connected to a sealing cap. The outer wall of the guide tube is rotatably sleeved with a handle ring, and the bottom of the handle ring is fixed with an outer tube for driving the sealing cap to rise. A base plate is rotatably provided below the sealing cap, and three groups of liquid collecting bottles are movably connected to the top of the base plate. A disposable bag is installed in the liquid collecting bottle, and multiple groups of liquid collecting bottles connected to the outer wall of the bottom of the liquid collecting bottle are fixed on the top of the base plate. A threaded cylinder connected by threads, each group of the liquid collecting bottles is slidably provided with a force-bearing plate extending into the liquid collecting bottle at the bottom, the top of the force-bearing plate is located in the liquid collecting bottle and a driven rod is provided, a rubber barrel is fixed between the top of the force-bearing plate and the bottom of the driven rod, a piston cavity is opened in the liquid collecting bottle below the two ends of the driven rod, a piston is slidably provided in the piston cavity, a piston rod fixed to the bottom of the driven rod is provided on the top of the piston, a plurality of groups of channels connected to the piston cavity are longitudinally opened inside the liquid collecting bottle, and each group of the channels is provided with a plurality of groups of air holes connected to the inner wall of the liquid collecting bottle.

[0008] According to some embodiments of the present invention, the negative pressure structure includes a positioning shell fixed to the bottom of the positioning plate, a piston disk is slidably provided in the positioning shell, one side of the piston disk and the positioning shell form a negative pressure chamber, the other side of the piston disk is equipped with an electric push rod for moving the piston disk, the end face of the positioning shell is provided with an air inlet pipe connected to the negative pressure chamber, the end of the air inlet pipe passes through the top of the positioning plate and is connected to the top of the guide tube, the end face of the air inlet pipe is located on one side of the air inlet pipe and is connected to an air outlet pipe, and the end faces of the air outlet pipe and the air inlet pipe located in the negative pressure chamber are both equipped with a one-way valve.

[0009] According to some embodiments of the present invention, a support plate for supporting the base plate is fixed inside the positioning plate, and a storage box is fixed on the top of the bottom plate below the support plate.

[0010] According to some embodiments of the present invention, a placement groove is provided at the contact position between the top of the positioning plate and the guide tube, an arc groove for the outer tube to rotate is provided inside the positioning plate on the outer side of the placement groove, an inner rod extending to the bottom of the outer tube is provided for sliding inside the outer tube, the end of the inner rod is fixed to the outer wall of the sealing cap, a guide groove is provided on the curved inner wall of the arc groove, a follower block penetrating through the outside of the outer tube and extending into the guide groove is provided on the outer wall of the inner rod, and a long straight groove for the follower block to be lifted and lowered is provided on the outer wall of the outer tube.

[0011] According to some embodiments of the present invention, a telescopic tube connected to the bottom of the guide tube is provided on the top of the sealing cap, and a one-way sheet is installed in the top of the telescopic tube.

[0012] According to some embodiments of the present invention, a base shaft rotatably connected to the top of the positioning plate is fixed at the center of the top of the base plate, the outer wall of the base shaft is sleeved with a constraint ring fixed to the bottom of the positioning plate, and the curved outer wall of the base shaft is fixed with three groups of elastic protrusions that are clamped with the inner wall of the constraint ring.

[0013] According to some embodiments of the present invention, trash cans are embedded in the front and rear outer walls of the U frame, and a groove for storing the trash can is formed in the outer wall of the U frame.

[0014] According to some embodiments of the present invention, a drainage tube connected to the guide tube is fixed on the top of the positioning plate, and a pressure strip for fixing the drainage tube is provided on the top of the positioning plate. The pressure strip is detachably connected to the top of the positioning plate by bolts.

[0015] According to some embodiments of the present invention, four sets of universal wheels are fixed to the bottom of the base plate near the corners, and handrails are fixed to the side walls of the U frame near the top fixed positions.

[0016] According to some embodiments of the present invention, dovetail grooves are provided on both sides of the positioning plate, and dovetail bars fixed to the inner wall of the U frame are slidably provided in the dovetail grooves.

[0017] The embodiments of the present invention have at least the following beneficial effects:

[0018] The continuous negative pressure drainage device with controllable pressure for orthopedic care of the present invention can quickly release the locking effect between the guide tube and the liquid collecting bottle through the setting of the drainage component, so that the time spent on replacing the lock of the full liquid collecting bottle is reduced, the drainage work efficiency can be improved in a variable manner, and the step of replacing the liquid collecting bottle is indirect, which can avoid causing additional pain to the patient's wound. At the same time, the taken out liquid collecting bottle can be used with the help of the disposable bag body to achieve the effect of efficient dinner cleaning. When the sealing cap is docked with the liquid collecting bottle, the disposable bag body is adsorbed, so that the bag body is in a maximized state of expansion, thereby avoiding the blockage of the drainage liquid tonight and making full use of the space inside the liquid collecting bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a structural schematic diagram of the first viewing angle of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the present invention;

[0022] Figure 3 It is a cutaway three-dimensional schematic diagram of the present invention;

[0023] Figure 4It is a three-dimensional structural schematic diagram of the drainage component of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the drainage assembly and the positioning plate of the present invention cut away from the front;

[0025] Figure 6 It is a schematic diagram of the cross-sectional structure of the guide tube of the present invention;

[0026] Figure 7 It is a schematic diagram of the cut-away plan structure of the arc groove of the present invention;

[0027] Figure 8 This is a schematic diagram of the cross-section plan structure of the liquid collecting bottle of the present invention;

[0028] Fig. 9 For the present invention Figure 8 A is an enlarged schematic diagram of the structure;

[0029] Fig.10 It is a schematic diagram of the top cross-sectional structure of the base shaft and the constraint ring of the present invention;

[0030] Fig.11 It is a schematic diagram of the structure of the positioning shell of the present invention when viewed from above.

[0031] 100, U frame; 110, positioning plate; 111, dovetail groove; 112, dovetail strip; 113, placement groove; 114, arc groove; 115, guide groove; 120, bottom plate; 130, support plate; 140, storage box; 200, drainage assembly; 210, drainage tube; 211, pressure strip; 220, guide tube; 230, base plate; 231, threaded tube; 232, base shaft; 233, restraint ring; 234, elastic protrusion; 240, Liquid collecting bottle; 241, force-bearing plate; 242, rubber barrel; 243, driven rod; 244, channel; 245, air hole; 246, piston; 247, piston rod; 248, piston chamber; 250, positioning shell; 251, air outlet pipe; 252, air inlet pipe; 253, piston disc; 254, electric push rod; 260, handle ring; 270, outer tube; 271, inner rod; 272, driven block; 280, sealing cap; 281, telescopic tube. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] The technical solution of the present invention is described in detail below through the accompanying drawings and specific embodiments:

[0037] like Figures 1 to 6 A controllable pressure continuous negative pressure drainage device for orthopedic care shown in the figure comprises: a U frame 100, a bottom plate 120 is fixed at the bottom of the U frame 100, a positioning plate 110 is slidably provided near the top of the U frame 100, and a drainage assembly 200 is assembled on the top of the positioning plate 110;

[0038] The drainage assembly 200 includes a guide tube 220 that penetrates the bottom of the positioning plate 110. The bottom of the positioning plate 110 is equipped with a negative pressure structure connected to the top of the guide tube 220. The bottom of the guide tube 220 is funnel-shaped. A sealing cap 280 is connected to the bottom of the drainage assembly 200. A handle ring 260 is rotatably sleeved on the outer wall of the guide tube 220. The inner wall of the handle ring 260 and the guide tube 220 are connected by a torsion spring. An outer tube 270 for driving the sealing cap 280 to rise is fixed to the bottom of the handle ring 260. A base plate 230 is rotatably provided below the sealing cap 280. Three groups of liquid collecting bottles 240 are movably connected to the top of the base plate 230. A disposable bag body is assembled in the liquid collecting bottle 240. Multiple groups of liquid collecting bottles 240 are fixed to the top of the base plate 230. A threaded cylinder 231 is threadedly connected to the outer wall of the bottom, and a force-bearing sheet 241 extending into the liquid collecting bottle 240 is slidably provided at the bottom of each group of liquid collecting bottles 240, and a driven rod 243 is provided at the top of the force-bearing sheet 241 in the liquid collecting bottle 240, and a rubber barrel 242 is fixed between the top of the force-bearing sheet 241 and the bottom of the driven rod 243, and a piston cavity 248 is provided below the two ends of the driven rod 243 in the liquid collecting bottle 240, and a piston 246 is slidably provided in the piston cavity 248, and a piston rod 247 fixed to the bottom of the driven rod 243 is provided on the top of the piston 246, and a plurality of groups of channels 244 connected to the piston cavity 248 are longitudinally provided inside the liquid collecting bottle 240, and each group of channels 244 is provided with a plurality of groups of air holes 245 connected to the inner wall of the liquid collecting bottle 240;

[0039] A placement groove 113 is provided at the contact position between the top of the positioning plate 110 and the guide tube 220, and an arc groove 114 is provided on the outer side of the placement groove 113 and located inside the positioning plate 110 for the outer tube 270 to rotate. An inner rod 271 extending to the bottom of the outer tube 270 is provided inside the outer tube 270 for sliding, and the end of the inner rod 271 is fixed to the outer wall of the sealing cap 280. A guide groove 115 is provided on the curved inner wall of the arc groove 114, and a follower block 272 penetrating through the outside of the outer tube 270 and extending into the guide groove 115 is provided on the outer wall of the inner rod 271, and a long straight groove is provided on the outer wall of the outer tube 270 for the follower block 272 to be raised and lowered.

[0040] The device is moved to one side of the patient's bed, and the positioning plate 110 is pulled out of the U frame 100, so that the base plate 230 is also located outside the U frame 100. At this time, the drainage needle is installed on the end of the drainage tube 210 and inserted into the patient's wound. The speed of the telescopic end of the electric push rod 254 is controlled according to the condition of the wound, so that the negative pressure generated inside the negative pressure structure can be controlled. The accumulated fluid at the patient's wound will enter the guide tube 220 through the drainage tube 210, and finally enter the liquid collection bottle 240. When the liquid collection bottle 240 is full, an external force is applied to the manual handle ring 260, and the outer tube 270 and the inner rod 271 will move in an arc trajectory in the arc groove 114, and the driven block 272 will move along the guide groove 11 5 The inner wall moves in an arc track and generates an upward supporting force on the inner rod 271, so that the sealing cap 280 rises upward and separates from the full liquid collecting bottle 240. Then, the manual base plate 230 applies an external force to make the base plate 230 rotate around the axis of the base shaft 232 until a jamming effect occurs. At this time, the new liquid collecting bottle 240 is already located directly below the sealing cap 280. The external force applied to the handle ring 260 can be removed, and the torsion spring will generate a resisting force on the handle ring 260. The sealing cap 280 will be lowered and firmly sleeved on the top of the liquid collecting bottle 240. Since a disposable bag is sleeved in the liquid collecting bottle 240, the sealing cap 280 will be sealed and sleeved on the top of the liquid collecting bottle 240. At this time, the drainage step can be continued;

[0041] When the full liquid collecting bottle 240 is taken out, an external force is applied to the liquid collecting bottle 240 to rotate it out of the threaded barrel 231. At this time, the base plate 230 no longer produces an upward squeezing force on the force-bearing sheet 241, and the rubber barrel 242 relies on its own elasticity to restore the force-bearing sheet 241. The driven rod 243 will drive the piston rod 247 to lower, and the piston 246 will lower inside the piston chamber 248, so that the normal pressure value inside the piston chamber 248 will release air through the channel 244 and multiple air inlet pipes 252, and the disposable bag inside the liquid collecting bottle 240 will no longer be adsorbed. The disposable bag can be manually taken out by holding the edge of the disposable bag, and the cleaning work inside the liquid collecting bottle 240 can be quickly completed, and the disposable bag can be put into the liquid collecting bottle 240 again. After the liquid collecting bottle 240 is docked with the threaded barrel 231, the air hole 245 can produce an adsorption effect on the outer wall of the disposable bag body, so that the disposable bag body is opened to the maximum state, which can better accommodate the accumulated fluid drained from the patient's wound.

[0042] Please refer to Fig.11The negative pressure structure includes a positioning shell 250 fixed to the bottom of the positioning plate 110, a piston disk 253 is slidably arranged in the positioning shell 250, one side of the piston disk 253 and the positioning shell 250 form a negative pressure chamber, and the other side of the piston disk 253 is equipped with an electric push rod 254 for moving the piston disk 253, and the end surface of the positioning shell 250 is provided with an air inlet pipe 252 connected to the negative pressure chamber, the end of the air inlet pipe 252 passes through the top of the positioning plate 110 and is connected to the top of the guide tube 220, the end surface of the air inlet pipe 252 is located on one side of the air inlet pipe 252 and is connected to the air outlet pipe 251, and the end surfaces of the air outlet pipe 251 and the air inlet pipe 252 located in the negative pressure chamber are both equipped with a one-way valve;

[0043] A drainage tube 210 connected to the guide tube 220 is fixed on the top of the positioning plate 110. A pressure strip 211 for fixing the drainage tube 210 is provided on the top of the positioning plate 110. The pressure strip 211 is detachably connected to the top of the positioning plate 110 by bolts.

[0044] The pressure strip 211 limits the position of the drainage tube 210 to ensure stable drainage of the accumulated fluid in the patient's body without easily causing additional pain.

[0045] A telescopic tube 281 connected to the bottom of the guide tube 220 is provided at the top of the sealing cap 280 , and a one-way sheet is installed inside the top of the telescopic tube 281 .

[0046] When the electric push rod 254 is working, its output end will drive the piston disc 253 to move inside the positioning shell 250. When it moves horizontally to the left, the one-way valve in the end of the air inlet pipe 252 is in an open state, and the one-way valve in the end of the air outlet pipe 251 is in a closed state. The inside of the guide tube 220 is drawn into the negative pressure chamber through the air inlet pipe 252. At this time, the accumulated fluid in the patient's body can be drawn into the inside of the guide tube 220 through the drainage tube 210. When the piston disc 253 moves horizontally to the right in the positioning shell 250, the one-way valve in the end of the air inlet pipe 252 is in a closed state, and the one-way valve in the end of the air outlet pipe 251 is in an open state. The inside of the negative pressure chamber is discharged through the air outlet pipe 251. At this time, the one-way sheet in the telescopic tube 281 is squeezed to generate a downward squeezing force, so the one-way sheet will open, and the accumulated fluid will pass through the telescopic tube into the liquid collecting bottle 240 below. After a certain amount of accumulated fluid is collected, the liquid collecting bottle 240 can be replaced.

[0047] The provision of the telescopic tube 281 can lift the sealing cap 280 upward to a certain height, so that the replacement of the liquid collecting bottle 240 is not restricted.

[0048] Please refer to Figure 2 A support plate 130 supporting the base plate 230 is fixed in the positioning plate 110 , and a storage box 140 is fixed on the top of the bottom plate 120 below the support plate 130 .

[0049] Please refer to Figure 4 and Fig.10 A base shaft 232 rotatably connected to the top of the positioning plate 110 is fixed at the center of the top of the base plate 230, and the outer wall of the base shaft 232 is sleeved with a constraint ring 233 fixed to the bottom of the positioning plate 110. Three groups of elastic protrusions 234 that are clamped with the inner wall of the constraint ring 233 are fixed to the curved outer wall of the base shaft 232, and the inner wall of the constraint ring 233 is provided with grooves that match the three groups of elastic protrusions 234.

[0050] When the base shaft 232 rotates with the base plate 230, the elastic protrusion 234 will be squeezed and deformed, and will enter the adjacent slot as the base shaft 232 rotates, causing the rotation of the base plate 230 to produce a jamming effect. At this time, the liquid collecting bottle 240 is located directly below the sealing cap 280, which can ensure the precise docking of the two and improve the efficiency of replacing the liquid collecting bottle 240.

[0051] Please refer to Figure 1 and Figure 2 The front and rear outer walls of the U frame 100 are both embedded with trash cans, and the outer wall of the U frame 100 is provided with a groove for storing the trash can.

[0052] It can store the waste generated during drainage of patients, and it is convenient to take out the waste bin for cleaning.

[0053] Please refer to Figure 1 and Figure 2 Four sets of universal wheels are fixed at the bottom of the base plate 120 near the corners, and handrails are fixed at the side walls of the U frame 100 near the top fixed positions.

[0054] The handrail can be held to apply external force to make the universal wheels at the bottom roll to drive the device to move to the destination for drainage operation.

[0055] Please refer to Figure 2 Dovetail grooves 111 are provided on both sides of the positioning plate 110 , and dovetail bars 112 fixed to the inner wall of the U frame 100 are slidably provided in the dovetail grooves 111 .

[0056] The positioning plate 110 can be extended to one side to replace or clean the liquid collecting bottle 240 located below, and can also be extended to a certain length to better drain the patient.

[0057] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A continuous negative pressure drainage device with controllable pressure for orthopedic care, characterized in that: include: A U frame (100), wherein a bottom plate (120) is fixed at the bottom of the U frame (100), a positioning plate (110) is slidably provided near the top of the U frame (100), and a drainage assembly (200) is mounted on the top of the positioning plate (110); The drainage assembly (200) comprises a guide tube (220) penetrating the bottom of the straight positioning plate (110); the bottom of the positioning plate (110) is equipped with a negative pressure structure connected to the top of the guide tube (220); the bottom of the guide tube (220) is funnel-shaped; the bottom of the drainage assembly (200) is connected to a sealing cap (280); the outer wall of the guide tube (220) is rotatably sleeved with a handle ring (260); the bottom of the handle ring (260) is fixed with an outer tube (270) for driving the sealing cap (280) to rise; a base plate (230) is rotatably provided below the sealing cap (280); the top of the base plate (230) is movably connected with three groups of liquid collecting bottles (240); a disposable bag is installed in the liquid collecting bottle (240); the top of the base plate (230) is fixed with multiple groups of threaded tubes (270) threadedly connected to the outer wall of the bottom of the liquid collecting bottle (240); 31), a force-bearing sheet (241) extending into the liquid collecting bottle (240) is slidably provided at the bottom of each group of the liquid collecting bottles (240), a driven rod (243) is provided at the top of the force-bearing sheet (241) located in the liquid collecting bottle (240), a rubber barrel (242) is fixed between the top of the force-bearing sheet (241) and the bottom of the driven rod (243), and a rubber barrel (242) is provided in the liquid collecting bottle (240) below the two ends of the driven rod (243). A piston chamber (248) is provided with a piston (246) which is slidably disposed in the piston chamber (248); a piston rod (247) is provided at the top of the piston (246) and is fixed to the bottom of the driven rod (243); a plurality of groups of channels (244) which are connected to the piston chamber (248) are longitudinally provided inside the liquid collecting bottle (240); and each group of the channels (244) is provided with a plurality of groups of air holes (245) which are connected to the inner wall of the liquid collecting bottle (240).

2. The continuous negative pressure drainage device with controllable pressure for orthopedic care according to claim 1, characterized in that: The negative pressure structure comprises a positioning shell (250) fixed to the bottom of the positioning plate (110), a piston disk (253) being slidably arranged in the positioning shell (250), one side of the piston disk (253) and the positioning shell (250) forming a negative pressure chamber, the other side of the piston disk (253) being equipped with an electric push rod (254) for moving the piston disk (253), an end surface of the positioning shell (250) being equipped with an air inlet pipe (252) connected to the negative pressure chamber, the end of the air inlet pipe (252) passing through the top of the positioning plate (110) and being connected to the top of the guide tube (220), the end surface of the air inlet pipe (252) being located on one side of the air inlet pipe (252) being connected to an air outlet pipe (251), and the end surfaces of the air outlet pipe (251) and the air inlet pipe (252) located in the negative pressure chamber being equipped with a one-way valve.

3. The continuous negative pressure drainage device with controllable pressure for orthopedic care according to claim 1, characterized in that: A support plate (130) supporting the base plate (230) is fixed inside the positioning plate (110), and a storage box (140) is fixed below the support plate (130) and located on the top of the bottom plate (120).

4. The continuous negative pressure drainage device with controllable pressure for orthopedic care according to claim 1, characterized in that: A placement groove (113) is provided at a position where the top of the positioning plate (110) contacts the guide tube (220); an arc groove (114) for the outer tube (270) to rotate is provided on the outer side of the placement groove (113) and is located inside the positioning plate (110); an inner rod (271) extending to the bottom of the outer tube (270) is provided inside the outer tube (270) for sliding; the end of the inner rod (271) is fixed to the outer wall of the sealing cap (280); a guide groove (115) is provided on the curved inner wall of the arc groove (114); a driven block (272) penetrating outside the outer tube (270) and extending into the guide groove (115) is provided on the outer wall of the inner rod (271); and a long straight groove for the driven block (272) to rise and fall is provided on the outer wall of the outer tube (270).

5. The continuous negative pressure drainage device with controllable pressure for orthopedic care according to claim 1, characterized in that: A telescopic tube (281) connected to the bottom of the guide tube (220) is provided at the top of the sealing cap (280), and a one-way sheet is installed inside the top of the telescopic tube (281).

6. The continuous negative pressure drainage device with controllable pressure for orthopedic care according to claim 1, characterized in that: A base shaft (232) rotatably connected to the top of the positioning plate (110) is fixed at the center of the top of the base plate (230); the outer wall of the base shaft (232) is sleeved with a restraining ring (233) fixed to the bottom of the positioning plate (110); and the curved outer wall of the base shaft (232) is fixed with three groups of elastic protrusions (234) that are clamped with the inner wall of the restraining ring (233).

7. The continuous negative pressure drainage device with controllable pressure for orthopedic care according to claim 1, characterized in that: Trash cans are embedded in the front and rear outer walls of the U frame (100), and a groove for storing the trash can is provided on the outer wall of the U frame (100).

8. The continuous negative pressure drainage device with controllable pressure for orthopedic care according to claim 1, characterized in that: A drainage tube (210) connected to the guide tube (220) is fixedly provided on the top of the positioning plate (110), and a pressure strip (211) for fixing the drainage tube (210) is provided on the top of the positioning plate (110). The pressure strip (211) is detachably connected to the top of the positioning plate (110) by bolts.

9. The continuous negative pressure drainage device with controllable pressure for orthopedic care according to claim 1, characterized in that: Four sets of universal wheels are fixed at the bottom of the base plate (120) near the corners, and a handrail is fixed at a fixed position near the top of the side wall of the U frame (100).

10. The continuous negative pressure drainage device with controllable pressure for orthopedic care according to claim 1, characterized in that: Dovetail grooves (111) are provided on both sides of the positioning plate (110), and dovetail bars (112) fixed to the inner wall of the U frame (100) are slidably provided in the dovetail grooves (111).

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