Ventricular drainage regulator

Abstract

The invention discloses a ventricular drainage regulator, which belongs to the field of drainage devices, is used for ventricular drainage and comprises a liquid storage tank with a tank body connecting pipe, the liquid storage tank is connected with a negative pressure tank with a main piston through a thread structure, the main piston is connected with an auxiliary rack through a main piston rod, and the auxiliary rack is in meshing transmission with a driving gear of a rack driving motor; a main cavity in the negative pressure tank is communicated with an auxiliary cavity in the negative pressure auxiliary pipe through a cavity connecting hole; an auxiliary piston is arranged in the auxiliary cavity, the auxiliary piston blocks the cavity connecting hole in the initial state, the auxiliary piston is connected with an auxiliary piston rod, the auxiliary piston rod is connected with a linkage rod, the linkage rod is connected with a linkage plate, and the linkage plate is connected with an auxiliary rack. Generation and fine adjustment of the negative pressure environment can be achieved through adjustment of the structure, the stability of the negative pressure environment can be effectively guaranteed, increase and fine adjustment of negative pressure can be achieved, better flexibility and adaptability are achieved, ventricular drainage can be achieved conveniently, and the drainage amount can be observed conveniently.

Description

Technical Field

[0001] The present application belongs to the field of drainage devices, and more specifically, relates to a ventricular drainage regulator. Background Art

[0002] External ventricular drainage devices are generally used in external ventricular puncture and drainage surgery. The drainage bottle is generally connected to the patient's ventricle through a drainage tube, and the inflow of liquid is achieved by controlling the pressure in the bottle. In the prior art, there is a drainage device with the following structure. See the patent document with Chinese Patent Publication No. CN222899826U, which discloses an external ventricular quantitative drainage bottle and specifically discloses the following technical content: it includes a bottle body, the top of the bottle body is connected to a negative pressure tube, the bottom is connected to a liquid inlet pipe and a liquid discharge pipe, the bottle body also has a partition, the partition is provided with a liquid drop port near the edge, the liquid drop port is connected to a short tube downward, the outer wall of the bottle body is provided with an adjustment switch for controlling the opening and closing of the short tube, the partition is also provided with a balance pipe connected to the space below the partition, the end of the balance pipe extends out of the bottle body and is installed with a switch valve. This structure divides the bottle body into two parts, upper and lower parts, by setting a partition. At the same time, a liquid droplet and a balance pipe are set on the partition. Under normal circumstances, the accumulated liquid flows from the liquid droplet to the lower space. When the lower space is full, the subsequent one-time drainage can be completed. The negative pressure machine does not need to be paused during the whole process, and continuous liquid extraction can be achieved. Each time the accumulated liquid fills the lower space, achieving quantitative drainage.

[0003] Continuing with the prior art, for example, Chinese Patent Publication No. CN221618067U discloses a blockage-resistant ventricular drainage device comprising a drainage tube and a drainage bag. The drainage tube comprises a drainage hole formed in the outer wall of the end portion, a first flexible tube being snap-connected to the right top end of the drainage tube, a surrounding anti-folding sleeve being connected to the outer wall of the fixing clamp, and the drainage bag being disposed at the right end portion of the first flexible tube. The blockage-resistant ventricular drainage device comprises a fixing clamp disposed on the outer wall of the first flexible tube. The fixing clamp is threadedly disposed around the outer wall of the first flexible tube, increasing the outer wall thickness of the first flexible tube without affecting its flexibility, thereby reducing blockage caused by bending of the first flexible tube due to adjustment of its position and height. Since the drained cerebrospinal fluid contains thick substances such as protein and blood clots, which can cause blockage of the inner wall of the first flexible tube, the outer wall of the first flexible tube is squeezed by the surrounding squeezing ring, thereby clearing the blockage.

[0004] It can be seen that in the above-mentioned prior art, the negative pressure generating structure has not been effectively improved, so that the negative pressure generated by its negative pressure structure cannot be effectively fine-tuned according to actual conditions, and by improving the structural coordination between the negative pressure generating environment and the liquid storage tank, it can better adapt to ventricular drainage. Summary of the Invention

[0005] The purpose of the present application is to provide a ventricular drainage regulator, which can achieve the generation and fine-tuning of a negative pressure environment through structural adjustment, can effectively ensure the stability of the negative pressure environment, and can achieve the increase and fine-tuning of the negative pressure, and has better flexibility and adaptability, while facilitating the realization of ventricular drainage and the observation of drainage volume.

[0006] To achieve the above objectives, this application is implemented through the following technical solutions: The present application discloses a ventricular drainage regulator, comprising a liquid storage tank, the liquid storage tank having a tank body connecting pipe, the tank body connecting pipe being located at the top opening of the liquid storage tank, the top opening of the liquid storage tank being further provided with a threaded structure, the liquid storage tank being connected to the bottom end of a negative pressure tank through the threaded structure, the interior of the negative pressure tank being provided with a main piston, the main piston being connected to a main piston rod, the main piston rod extending from a tank top plate and being connected to an auxiliary rack, the tank top plate being located at the top opening of the negative pressure tank and being fixedly connected to the negative pressure tank; the auxiliary rack being connected to a driving gear Meshing transmission, the driving gear is connected to the rack drive motor; the negative pressure tank forms a main chamber inside, and the negative pressure tank is circumferentially distributed with a negative pressure auxiliary tube fixed as a whole, and an auxiliary chamber is formed in the negative pressure auxiliary tube, and the auxiliary chamber is connected to the main chamber through a cavity connecting hole; an auxiliary piston is provided in the auxiliary chamber, and the auxiliary piston blocks the cavity connecting hole in the initial state, the auxiliary piston is connected to the auxiliary piston rod, the auxiliary piston rod is connected to the linkage rod, the linkage rod is connected to the linkage plate, and the linkage plate is connected to the auxiliary rack.

[0007] As one of the preferred technical solutions of the present application, the top end of the main piston rod is connected to an auxiliary rack, the auxiliary rack is a U-shaped structure, and a plurality of rod adjustment holes are provided at the middle notch position of the auxiliary rack, and the rod adjustment holes are distributed in the length direction of the auxiliary rack; a rod is provided in the rod adjustment hole and is connected to the linkage orifice plate through the rod body; the linkage orifice plate is located in the middle notch of the auxiliary rack and is connected to the linkage plate; a through hole for accommodating the linkage orifice plate is provided at the middle position of the linkage plate.

[0008] As one of the preferred technical solutions of the present application, the bottom end of the linkage plate is fixedly connected to a linkage rod, the bottom end of the linkage rod is connected to a linkage ring, the auxiliary piston rod passes through the inside of the linkage ring and is fixedly connected to an auxiliary rod ring at the top, and the auxiliary rod ring and the auxiliary piston rod form a T-shaped structure.

[0009] As one of the preferred technical solutions of the present application, the auxiliary piston rod is distributed circumferentially of the negative pressure tank and its length increases successively, and the distance between the bottom surface of the auxiliary rod ring and the top surface of the tank top plate increases successively; the bottom surface of the linkage ring and the top surface of the tank top plate are in contact with each other in the initial state.

[0010] As one of the preferred technical solutions of the present application, the linkage plate is circumferentially distributed with a number of threaded guide adjustment rods, the bottom end of the guide adjustment rod is threadedly connected to a piston guide rod, and the piston guide rod has a blind hole threadedly connected to the guide adjustment rod; the piston guide rod extends from the tank top plate into the interior of the negative pressure tank and is connected to the main piston.

[0011] As one of the preferred technical solutions of the present application, the negative pressure tank is provided with a sealing groove at the bottom end, the sealing groove accommodates the top end of the liquid storage tank, and a sealing ring body is provided inside the sealing groove.

[0012] As one of the preferred technical solutions of the present application, the negative pressure tank is provided with several tank body connecting plates on the outer wall between the circumferentially adjacent negative pressure auxiliary tubes, and the tank body connecting plates are distributed in the height direction of the negative pressure tank; the tank body connecting plates are provided with connecting holes connected to the connecting plates, and the connecting plates are connected to the adjusting frame, and the bottom end of the adjusting frame has an integrally arranged support rod, and the bottom end of the support rod is fixedly connected to the base.

[0013] As one of the preferred technical solutions of the present application, the adjustment frame is provided with a sliding guide rail, and a sliding adjustment sleeve is slidably provided on the sliding guide rail. The sliding adjustment sleeve and the sliding guide rail are provided with a number of connecting adjustment holes on both sides in the length direction, and the sliding adjustment sleeve and the sliding guide rail are connected through the aligned connecting adjustment holes and fasteners.

[0014] As one of the preferred technical solutions of the present application, the adjustment frame and the sliding guide rail are provided with a plurality of pipe-through holes distributed in the length direction, and the pipe-through holes are distributed on the end faces facing toward and away from the negative pressure tank.

[0015] Compared with the prior art, the present invention has the following advantages: The present application can realize negative pressure in the main chamber inside the negative pressure tank, and at the same time realize negative pressure in the main chamber, fine-tune the negative pressure through the auxiliary chamber in the negative pressure auxiliary tube, so as to meet the slow absorption of liquid in the drainage tube by the liquid storage tank through the tank body connecting tube, meet the flow requirements of the liquid in the drainage tube, and realize observation of the liquid inventory through the design of the transparent structure of the liquid storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure of this application is three-dimensional Figure 1 .

[0017] Figure 2 yes Figure 1 A partial enlarged view of part I.

[0018] Figure 3 The overall structure of this application is three-dimensional Figure 2 .

[0019] Figure 4 yes Figure 3 A partial enlarged view of part II.

[0020] Figure 5 It is a top view of this application.

[0021] Figure 6 yes Figure 5 Cross-sectional view at the position and direction shown by AA.

[0022] Figure 7 yes Figure 6 A partial enlarged view of part III.

[0023] Figure 8 yes Figure 5 Cross-sectional view at the position and direction shown by BB.

[0024] In the figure: 1. Base; 2. Support rod; 3. Adjustment frame; 4. Pipe hole; 5. Connecting plate; 6. Liquid storage tank; 7. Negative pressure tank; 8. Tank connecting plate; 9. Negative pressure auxiliary pipe; 10. Tank top plate; 11. Linkage plate; 12. Top plate connector; 13. Linkage rod; 14. Linkage ring; 15. Auxiliary piston rod; 16. Auxiliary rod ring; 17. Piston guide rod; 18. Motor plate; 19. Drive gear; 20. Auxiliary gear 21. Rod adjustment hole; 22. Rack drive motor; 23. Linkage orifice plate; 24. Guide adjustment rod; 25. Main piston rod; 26. Piston sealing sleeve; 27. Sliding adjustment sleeve; 28. Sliding guide rail; 29. ​​Connection adjustment hole; 30. Main piston; 31. Auxiliary piston; 32. Cavity connection hole; 33. Auxiliary chamber; 34. Main chamber; 35. Tank connecting pipe; 36. Sealing slot; 37. Piston limit block. DETAILED DESCRIPTION

[0025] The technical solution described in this application is further described below with reference to the accompanying drawings and embodiments. Example 1

[0026] like Figures 1 to 8 As shown, the ventricular drainage regulator includes a liquid storage tank 6, which is made of transparent medical material, with a sealed bottom end and an open top end. A tank body connecting pipe 35 is connected to the position near the top opening, and the tank body connecting pipe 35 is connected to the drainage tube. The top end of the liquid storage tank 6 has a threaded structure, and the liquid storage tank 6 is connected to the bottom end of the negative pressure tank 7 through a threaded structure. The negative pressure tank 7 is a hollow structure with two ends open. There are several negative pressure auxiliary tubes 9 distributed circumferentially around the negative pressure tank 7. The bottom end of the negative pressure auxiliary tube 9 is sealed and the top end is open. The top opening of the negative pressure tank 7 is connected to a tank top plate 10, and the tank top plate 10 is connected to the negative pressure tank 7 through a top plate connector 12. The tank top plate 10 is used to seal the top openings of the negative pressure tank 7 and the negative pressure auxiliary tube 9.

[0027] The interior of the negative pressure tank 7 forms a main chamber 34, within which a main piston 30 is disposed. The main piston 30 is connected to a main piston rod 25, the top of which extends from the tank top plate 10 and is connected to the auxiliary rack 20. Initially, the main piston 30 is located below a cavity connection hole 32, which communicates with an auxiliary chamber 33. The auxiliary chamber 33 is located in the negative pressure auxiliary tube 9. An auxiliary piston 31 is placed within the auxiliary chamber 33. Initially, the auxiliary piston 31 is located at the position of the cavity connection hole 32 and blocks the cavity connection hole 32. The auxiliary piston 31 is connected to an auxiliary piston rod 15, which extends from the top tank top plate 10 and is connected to an auxiliary rod ring 16.

[0028] The auxiliary rod ring 16 is located in the space formed by the linkage rod 13. The bottom end of the linkage rod 13 is connected to the linkage ring 14. The linkage ring 14 slides along the auxiliary piston rod 15 and drives the auxiliary rod ring 16 after contacting it. The top end of the linkage rod 13 is connected to the linkage plate 11, which is arranged parallel to the tank top plate 10.

[0029] A through hole is provided at the middle position of the linkage plate 11, and a linkage orifice plate 23 is provided in the through hole. The linkage orifice plate 23 is located at the middle notch position of the auxiliary rack 20. The auxiliary rack 20 is a U-shaped structure, and a gear structure is processed on the end faces on both sides. The auxiliary rack 20 is engaged with the driving gear 19 at the corresponding position through the gear structure. The driving gear 19 is connected to the rack drive motor 22. The rack drive motor 22 is located on the motor plate 18. The motor plate 18 extends from the through hole at the middle position of the linkage plate 11 and is connected to the tank top plate 10 below.

[0030] The auxiliary rack 20 is machined with several rod adjustment holes 21 on the end face of the middle notch. The rod adjustment holes 21 are connected to the linkage orifice plate 23 through the rod body. The rod body is located on the bottom surface of the linkage orifice plate 23, and a groove for accommodating the top end of the rod body is machined at the connection position between the linkage orifice plate 23 and the rod body. Example 2

[0031] like Figures 1 to 8 As shown, in the ventricular drainage regulator, the auxiliary piston rod 15 is distributed in the circumferential direction of the negative pressure tank 7, and the height of the auxiliary piston rod 15 extending from the top of the tank top plate 10 in the circumferential direction of the negative pressure tank 7 increases successively, and the distance between the bottom surface of the auxiliary rod ring 16 and the top surface of the tank top plate 10 increases; in the initial state of the linkage ring 14, the bottom surface of the linkage ring 14 is in contact with the top surface of the tank top plate 10.

[0032] The main piston 30 has several piston guide rods 17 distributed circumferentially around the main piston rod 25. The piston guide rods 17 extend from the tank top plate 10 and are threadedly connected to the guide adjustment rod 24. The tank top plate 10 has a threaded hole on the top surface that is threadedly connected to the guide adjustment rod 24; the guide adjustment rod 24 is threadedly connected to the linkage plate 11.

[0033] The structures and connection structures of the remaining parts are the same as the structures and connection relationships described in the aforementioned embodiments. Those skilled in the art can understand the solutions described in this embodiment based on the aforementioned embodiments. Example 3

[0034] like Figures 1 to 8 As shown, the ventricular drainage regulator also includes piston sealing sleeves 26 provided at the locations where the main piston rod 25 and auxiliary piston rod 15 extend from the tank top plate 10. Several sealing rings are arranged vertically within the piston sealing sleeves 26. A piston stopper 37 is provided at the connection point between the main piston 30 and the piston guide rod 17. The piston stopper 37 is located on the top surface of the main piston 30. A sealing groove 36 is provided at the connection point between the negative pressure tank 7 and the top surface of the liquid storage tank 6. A sealing ring is disposed within the sealing groove 36.

[0035] The structures and connection structures of the remaining parts are the same as the structures and connection relationships described in the aforementioned embodiments. Those skilled in the art can understand the solutions described in this embodiment based on the aforementioned embodiments. Example 4

[0036] like Figures 1 to 8 As shown, the ventricular drainage regulator, the negative pressure tank 7 is provided with a tank body connecting plate 8 on the outer wall, the tank body connecting plate 8 is located between adjacent negative pressure auxiliary tubes 9, and is distributed in the height direction of the negative pressure tank 7; the tank body connecting plate 8 is provided with a connecting space, and is connected to the connecting plate 5 through a connecting hole and a fastener, the connecting plate 5 is fixed on the sliding adjustment sleeve 27, the sliding adjustment sleeve 27 slides on the sliding guide rail 28, and the sliding adjustment sleeve 27 and the sliding guide rail 28 are provided with a plurality of connection adjustment holes 29. After the sliding adjustment sleeve 27 and the connecting adjustment hole 29 on the sliding guide rail 28 are aligned, they are connected and fixed by fasteners; the sliding guide rail 28 is integrally arranged with the adjustment frame 3, and the sliding guide rail 28 and the adjustment frame 3 are processed with a plurality of through-tube holes 4 on the end faces facing and away from the negative pressure tank 7, and the through-tube holes 4 are distributed in the length direction of the adjustment frame 3 and the sliding guide rail 28; the bottom of the adjustment frame 3 is processed with a support rod 2, the support rod 2 and the adjustment frame 3 are fixed as a whole, and the bottom end of the adjustment frame 3 is connected to the base 1.

[0037] The structures and connection structures of the remaining parts are the same as the structures and connection relationships described in the aforementioned embodiments. Those skilled in the art can understand the solutions described in this embodiment based on the aforementioned embodiments.

[0038] Based on the above embodiments, the following paragraphs will continue to describe in detail the technical features involved and the functions and roles played by the technical features in this technical solution, so as to help technical personnel in this field to fully understand the technical solution and reproduce it.

[0039] In the present application, the base 1 is placed on a horizontal plane, which can provide a counterweight for the overall structure and ensure the stability of the overall structure.

[0040] In the present application, the bottom end of the support rod 2 is fixedly connected to the base 1 , which can realize the connection between the base 1 and the adjustment frame 3 .

[0041] In this application, the adjustment frame 3 and the sliding guide rail 28 are fixed as one body, and the adjustment frame 3 and the sliding guide rail 28 are of the same length. A through-hole 4 is processed in the length direction of the adjustment frame 3 and the sliding guide rail 28, and the through-hole 4 is used to realize the insertion and limiting of the drainage tube.

[0042] In the present application, the sliding guide rail 28 is slidably connected to the sliding adjustment sleeve 27. Connection adjustment holes 29 are machined on the sides of both. The connection adjustment holes 29 on the sliding guide rail 28 and the sliding adjustment sleeve 27 are aligned and connected via fasteners. The sliding guide rail 28 facilitates position adjustment of the sliding adjustment sleeve 27. The sliding adjustment sleeve 27 and the sliding guide rail 28 are aligned and connected via fasteners to fix their relative positions. A fixed connection plate 5 is provided on the sliding adjustment sleeve 27. The connection plate 5 adjusts the relative positions of the negative pressure tank 7 and the liquid storage tank 6 as the sliding adjustment sleeve 27 moves.

[0043] In the present application, the connection plate 5 is connected to the negative pressure tank 7 via a tank body connection plate 8. The tank body connection plate 8 is located between adjacent negative pressure auxiliary tubes 9 and is fixedly connected to the negative pressure tank 7 and the negative pressure auxiliary tubes 9. The tank body connection plates 8 are distributed along the height of the negative pressure tank 7. Different tank body connection plates 8 can be selected for the connection plate 5. At the same time, the tank body connection plates 8 can protect the negative pressure tank 7 from external forces.

[0044] In the present application, the negative pressure tank 7 is a circular cylindrical structure, and a through-hole structure with openings at both ends is processed at the central axis position of the negative pressure tank 7, and a main chamber 34 is formed inside the negative pressure tank 7. A main piston 30 is placed inside the main chamber 34, and the outer wall of the main piston 30 fits with the inner wall of the main chamber 34, so as to realize the negative pressure structure inside the negative pressure tank 7 during the movement. The negative pressure tank 7 is circumferentially distributed with a number of negative pressure auxiliary tubes 9 protruding from the outer wall of the negative pressure tank 7, and an auxiliary chamber 33 is provided inside the negative pressure auxiliary tube 9. The auxiliary chamber 33 is provided with a cavity connecting hole 32 near the bottom position, and the cavity connecting hole 32 is used to realize the communication between the auxiliary chamber 33 and the main chamber 34. The top end of the negative pressure auxiliary tube 9 is open and flush with the top end opening of the negative pressure tank 7. The top openings of the negative pressure tank 7 and the top openings of the negative pressure auxiliary tube 9 are both blocked by the tank top plate 10, and the tank top plate 10 is connected to the negative pressure tank 7 and the negative pressure auxiliary tube 9 via a top plate connector 12. The tank top plate 10 can cooperate with the main piston 30 and the auxiliary piston 31 to form a negative pressure structure inside the auxiliary chamber 33 and the main chamber 34. The auxiliary piston 31 is placed in the auxiliary chamber 33 in the negative pressure auxiliary tube 9. In the initial state, the auxiliary piston 31 is located at the bottom surface of the negative pressure auxiliary tube 9 and can block the tank body connecting tube 35. In the initial state, the main piston 30 is located below the cavity connecting hole 32.

[0045] In the present application, the main piston 30 is connected to the main piston rod 25, the top end of the main piston rod 25 extends out of the tank top plate 10, and a piston sealing sleeve 26 for improving sealing is provided at the connection position between the main piston rod 25 and the tank top plate 10. The piston sealing sleeve 26 is provided with several sealing rings at the connection position with the main piston rod 25, and the sealing rings are distributed along the height direction of the piston sealing sleeve 26.

[0046] In this application, the auxiliary rack 20 is integrally mounted on the top of the main piston rod 25. The auxiliary rack 20 is a U-shaped plate structure with gear teeth machined on the front and rear ends of the notch in the middle of the auxiliary rack 20. These gears mesh with corresponding drive gears 19. The drive gears 19 are driven by a rack drive motor 22, which is located on a motor plate 18, which is perpendicular to the tank top plate 10 and is located on either side of the auxiliary rack 20. The rack drive motor 22, through a dual-output gearbox, delivers power to two drive gears 19 on the same side, thus providing power to the auxiliary rack 20 in the lifting and lowering directions. Because the rack drive motor 22, via the drive gear 19, drives the auxiliary rack 20 to the same height, the main piston 30, connected to the auxiliary rack 20, rises to the same height within the main chamber 34. The main chamber 34 and the main piston 30 cooperate to generate a corresponding negative pressure within the liquid reservoir 6. Similarly, after the auxiliary piston 31 and the auxiliary chamber 33 follow the movement of the linkage plate 11, they will also generate a corresponding negative pressure value in the liquid storage tank 6. A digital pressure sensor is set at the connection position between the negative pressure tank 7 and the liquid storage tank 6. The digital pressure sensor can facilitate the operator to observe the negative pressure in the internal space formed by the negative pressure tank 7 and the liquid storage tank 6, so that the operator can manually start and stop the rack drive motor 22. The negative pressure environment formed by the auxiliary piston 31, the auxiliary piston rod 15, and the auxiliary chamber 33 can cooperate with the negative pressure environment formed by the main piston rod 25, the main piston 30, and the main chamber 34 to achieve a sequential increase in the negative pressure value under the same stroke of the auxiliary rack 25.

[0047] In the present application, the auxiliary rack 20 has a plurality of rod adjustment holes 21 evenly distributed within the central notch. The rod adjustment holes 21 are distributed along the length of the auxiliary rack 20. A rod is inserted and fixed into the rod adjustment holes 21. A linkage hole plate 23 is connected to the top of the rod. The linkage hole plate 23 has a groove structure that cooperates with the rod at the position corresponding to the rod. The auxiliary rack 20 can connect the rod adjustment holes 21 at different positions to adjust the position of the linkage plate 11 relative to the tank top plate 10. The linkage hole plate 23 is located at the central through-hole position of the linkage plate 11 to cooperate with the rod, so that it can be driven by the rod during the ascending stage.

[0048] In the present application, the linkage plate 11 is located above the tank top plate 10 and is arranged parallel to the tank top plate 10. The linkage plate 11 has a number of guide adjustment rods 24 distributed circumferentially around the central through hole. The guide adjustment rods 24 are threadedly connected to the linkage plate 11. The bottom end of the guide adjustment rod 24 is threadedly connected to the top end of the piston guide rod 17. To this end, a threaded hole needs to be machined at the top end of the piston guide rod 17. In the above structure, the guide adjustment rod 24 can connect the linkage plate 11 with the piston guide rod 17, thereby realizing the linkage between the two. The guide adjustment rod 24 is threadedly connected, which can facilitate the adjustment of the relative position between the two, and then cooperate with the linkage hole plate 23, the rod body adjustment hole 21 and the rod body structure to achieve the stability of the linkage plate 11 and its linkage structure.

[0049] In this application, the linkage plate 11 is fixedly connected to a linkage rod 13 on its bottom surface. The bottom end of the linkage rod 13 is connected to a linkage ring 14. The linkage ring 14 is a circular ring. The linkage rods 13 are distributed circumferentially around the linkage ring 14, forming a space to accommodate the auxiliary piston rod 15 and the auxiliary rod ring 16. The auxiliary rod ring 16 is located at the top of the auxiliary piston rod 15, and its outer diameter is larger than that of the auxiliary piston rod 15, forming a T-shaped structure with the auxiliary piston rod 15. The inner diameter of the inner hole of the linkage ring 14 matches the outer diameter of the auxiliary piston rod 15, ensuring that the linkage ring 14 can slide along the auxiliary piston rod 15. The above structure enables the linkage plate 11 to drive the auxiliary piston rod 15 and the auxiliary rod ring 16 to move upward through the linkage rod 13 and the linkage ring 14, thereby forming a negative pressure environment inside the auxiliary chamber 33 of the negative pressure auxiliary tube 9. Since the auxiliary chamber 33 is connected to the main chamber 34 through the cavity connecting hole 32, the negative pressure value of the main chamber 34 can be increased when it moves upward a unit distance, so that the negative pressure value inside the main chamber 34 can be fine-tuned through the increased negative pressure value.

[0050] In the present application, the auxiliary piston rods 15 are distributed circumferentially around the negative pressure tank 7, with one auxiliary piston rod 15 extending from the tank top plate 10 at its lowest height. The height of the auxiliary piston rods 15 extending from the tank top plate 10 then gradually increases along the circumference of the negative pressure tank 7. Specifically, the distance between the bottom end of the auxiliary rod ring 16 and the top surface of the tank top plate 10 gradually increases along the circumferential direction of the negative pressure tank 7; the distance between the top end surface of the auxiliary piston rod 15 and the top end surface of the tank top plate 10 gradually increases along the circumferential direction of the negative pressure tank 7. A piston sealing sleeve 26 structure that cooperates with the auxiliary piston rod 15 and the tank top plate 10 also needs to be provided at the connection point between the auxiliary piston rod 15 and the tank top plate 10 to meet sealing requirements.

[0051] In the present application, the negative pressure tank 7 is provided with a sealing groove 36 at the connection position with the top end of the liquid storage tank 6. The top end of the liquid storage tank 6 extends into the sealing groove 36 and contacts the sealing ring body in the sealing groove 36. The sealing groove 36 can achieve sealing at the connection position between the two and can prevent the liquid storage tank 6 from being over-screwed and causing damage to the main piston 30.

[0052] In the present application, the main piston 30 has a plurality of piston guide rods 17 distributed in the circumferential direction of the main piston rod 25 . The piston guide rods 17 are used to assist in stabilizing the main piston 30 and the main piston rod 25 .

[0053] In the present application, a piston limit block 37 is provided on the top surface of the main piston 30 at the connection position with the piston guide rod 17. The piston limit block 37 is a rubber block to protect the main piston rod 25 and avoid possible hard collision with the tank top plate 10.

[0054] During use, the liquid storage tank 6 and the negative pressure tank 7 are screwed together using a threaded structure. Once the liquid storage tank 6 contacts the sealing groove 36 and cannot be screwed in further, the screwing is stopped. The tank body connecting tube 35 of the liquid storage tank 6 is plugged into the drainage tube, which facilitates the flow of liquid. The liquid storage tank 6 is made of a transparent material, which facilitates observation of the liquid content.

[0055] The rack drive motor 22 starts to operate, driving the drive gear 19 through the gear transmission. The drive gear 19 meshes with the auxiliary rack 20, thereby driving the auxiliary rack 20 upward. The upward movement of the auxiliary rack 20 drives the main piston rod 25 connected thereto upward. The upward movement of the main piston rod 25 drives the main piston 30 connected to the bottom upward. The upward movement of the main piston 30 creates a negative pressure structure inside the liquid storage tank 6, allowing liquid to flow into the tank through the tank connection pipe 35.

[0056] The meshing transmission of the driving gear 19 and the auxiliary rack 20 can drive the main piston 30 to move slowly upward. During the upward movement, the auxiliary rack 20 drives the linkage plate 23 upward through the rod body connected to the rod body adjustment hole 21. The upward movement of the linkage plate 23 can drive the linkage plate 11 connected thereto upward. The linkage plate 11 can sequentially drive the auxiliary piston rods 15 and auxiliary rod rings 16 distributed circumferentially in the negative pressure tank 7 upward through the linkage rod 13 and linkage ring 14, thereby forming a negative pressure environment inside the negative pressure auxiliary tube 9. The auxiliary chamber 33 inside the negative pressure auxiliary tube 9 is connected to the main chamber 34 through the tank body connecting tube 35, so that the negative pressure environment can also act on the main chamber 34 in the negative pressure tank 7, achieving fine adjustment of the negative pressure environment in the main chamber 34.

[0057] The linkage plate 11 is connected to the piston guide rod 17 via the guide adjustment rod 24 . The piston guide rod 17 enables the linkage plate 11 to move along with the main piston 30 , thereby ensuring stable movement of the main piston 30 .

[0058] Before use, the combination of the liquid storage tank 6 and the negative pressure tank 7 is connected to the connecting plate 5 through the tank body connecting plate 8, and the height of the negative pressure tank 7 and the liquid storage tank 6 combination relative to the base 1 is adjusted by adjusting the relative position of the sliding adjustment sleeve 27 and the sliding guide rail 28.

[0059] Finally, although the present application is described in the form of the best embodiment, any recombination of the technical solutions of the present application by those skilled in the art based on the existing technologies at their disposal can still be understood as an extension of the technical ideas of the present application, and should be understood to still be within the scope of protection of the present application and protected by the present application.

Claims

1. A ventricular drainage regulator, comprising a liquid storage tank (6), wherein the liquid storage tank (6) has a tank body connecting pipe (35), the tank body connecting pipe (35) is located at the top opening of the liquid storage tank (6), and the top opening of the liquid storage tank (6) is also provided with a threaded structure, characterized in that: The liquid storage tank (6) is connected to the bottom end of the negative pressure tank (7) through a threaded structure. A main piston (30) is provided inside the negative pressure tank (7). The main piston (30) is connected to the main piston rod (25). The main piston rod (25) extends from the tank top plate (10) and is connected to the auxiliary rack (20). The tank top plate (10) is located at the top opening of the negative pressure tank (7) and is fixedly connected to the negative pressure tank (7); the auxiliary rack (20) is meshed with the driving gear (19) for transmission, and the driving gear (19) is connected to the rack drive motor (22); the negative pressure tank (7) forms a main chamber (34) inside, and the negative pressure tank (7) is circumferentially distributed with a fixed integral negative pressure auxiliary tube (9), wherein an auxiliary chamber (33) is formed in the negative pressure auxiliary tube (9), and the auxiliary chamber (33) is communicated with the main chamber (34) through a cavity connecting hole (32); an auxiliary piston (31) is provided in the auxiliary chamber (33), and the auxiliary piston (31) blocks the cavity connecting hole (32) in the initial state, and the auxiliary piston (31) is connected to the auxiliary piston rod (15), the auxiliary piston rod (15) is connected to the linkage rod (13), the linkage rod (13) is connected to the linkage plate (11), and the linkage plate (11) is connected to the auxiliary rack (20).

2. The ventricular drainage regulator according to claim 1, characterized in that: The top end of the main piston rod (25) is connected to an auxiliary rack (20), and the auxiliary rack (20) is a U-shaped structure. A plurality of rod adjustment holes (21) are provided at the middle notch position of the auxiliary rack (20), and the rod adjustment holes (21) are distributed in the length direction of the auxiliary rack (20); a rod is provided in the rod adjustment hole (21) and is connected to the linkage orifice plate (23) through the rod; the linkage orifice plate (23) is located in the middle notch of the auxiliary rack (20) and is connected to the linkage plate (11); a through hole for accommodating the linkage orifice plate (23) is provided at the middle position of the linkage plate (11).

3. The ventricular drainage regulator according to claim 2, characterized in that: The bottom end of the linkage plate (11) is fixedly connected to a linkage rod (13), the bottom end of the linkage rod (13) is connected to a linkage ring (14), the auxiliary piston rod (15) passes through the interior of the linkage ring (14) and is fixedly connected to an auxiliary rod ring (16) at the top end, and the auxiliary rod ring (16) and the auxiliary piston rod (15) form a T-shaped structure.

4. The ventricular drainage regulator according to claim 3, characterized in that: The auxiliary piston rods (15) are distributed in the circumferential direction of the negative pressure tank (7) and their lengths increase successively. The distance between the bottom surface of the auxiliary rod ring (16) and the top surface of the tank top plate (10) increases successively. The bottom surface of the linkage ring (14) and the top surface of the tank top plate (10) are in contact with each other in an initial state.

5. The ventricular drainage regulator according to claim 2, characterized in that: The linkage plate (11) is circumferentially provided with a plurality of threaded guide adjustment rods (24), the bottom ends of the guide adjustment rods (24) being threadedly connected to piston guide rods (17), the piston guide rods (17) having blind holes threadedly connected to the guide adjustment rods (24); the piston guide rods (17) extend from the tank top plate (10) into the interior of the negative pressure tank (7) and are connected to the main piston (30).

6. The ventricular drainage regulator according to claim 2, characterized in that: The negative pressure tank (7) is provided with a sealing groove (36) at the bottom end, the sealing groove (36) accommodates the top end of the liquid storage tank (6), and a sealing ring body is provided inside the sealing groove (36).

7. The ventricular drainage regulator according to any one of claims 1 to 6, characterized in that: The negative pressure tank (7) is provided with a plurality of tank body connecting plates (8) on the outer wall between circumferentially adjacent negative pressure auxiliary tubes (9), and the tank body connecting plates (8) are distributed in the height direction of the negative pressure tank (7); the tank body connecting plates (8) are provided with connecting holes connected to the connecting plates (5), and the connecting plates (5) are connected to the adjustment frame (3); the bottom end of the adjustment frame (3) is provided with an integral support rod (2), and the bottom end of the support rod (2) is fixedly connected to the base (1).

8. The ventricular drainage regulator according to claim 7, characterized in that: The adjustment frame (3) is provided with a sliding guide rail (28), and a sliding adjustment sleeve (27) is slidably provided on the sliding guide rail (28). The sliding adjustment sleeve (27) and the sliding guide rail (28) are provided with a plurality of connection adjustment holes (29) on both sides in the length direction. The sliding adjustment sleeve (27) and the sliding guide rail (28) are connected through the aligned connection adjustment holes (29) and fasteners.

9. The ventricular drainage regulator according to claim 8, characterized in that: The adjustment frame (3) and the sliding guide rail (28) are provided with a plurality of pipe-through holes (4) distributed in the length direction, and the pipe-through holes (4) are distributed on the end faces facing toward and away from the negative pressure tank (7).

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