Seroperitoneum puncture negative pressure drainage apparatus with pressure limiting function and use method thereof

Abstract

The invention belongs to the technical field of drainage apparatuses, particularly relates to a seroperitoneum puncture negative pressure drainage apparatus with a pressure limiting function and a use method thereof, and aims to solve the problems that the pressure in an existing drainage bottle changes intermittently and pauses, the pressure in the drainage bottle cannot be manually controlled in the pressing process, and the drainage effect is poor. In order to solve the problems that in the prior art, in the prior art, negative pressure cannot be controlled to be at a relatively accurate numerical value, the following scheme is provided that the drainage bottle comprises a drainage bottle base and a drainage bottle top cover located above the drainage bottle base, and the drainage bottle base and the drainage bottle top cover form a sealed cavity used for enabling the negative pressure to be formed in the drainage bottle base and the drainage bottle top cover to extract peritoneal effusion; according to the drainage bottle, the operation of stably extracting seroperitoneum can be completed by alternately and continuously pressing the negative pressure air bag, discomfort caused by intermittent extraction to a patient is avoided, and in addition, the drainage bottle base and the drainage bottle top cover can be decompressed finely through lifting of the sealing plug and rotation of the rotating ball.

Description

Technical Field

[0001] The present invention relates to the technical field of drainers, and particularly relates to an abdominal effusion puncture negative pressure drainer with a pressure limiting function and a using method thereof. Background Art

[0002] Negative pressure drainage is widely used in clinical practice. For postoperative patients, there are two purposes of negative pressure drainage. One is to drain the exudate from the wound surface out of the body; the other is to reduce the cavity of the wound surface through negative pressure, which is beneficial to the healing of the wound tissue.

[0003] For example, the utility model with the publication number CN211610955U discloses a thoracic and abdominal effusion puncture negative pressure drainer. There are still some deficiencies in the use of this patent:

[0004] 1. In the above technical solution, when in use, it is necessary to continuously press the negative pressure balloon, so that the pressure in the drainage bottle changes intermittently and pauses. When extracting abdominal effusion, the abdominal effusion is extracted intermittently, which is likely to bring discomfort and pain to the patient;

[0005] 2. When squeezing the negative pressure balloon, it is generally manually pressed. Manually, it is impossible to control the magnitude of the pressure in the drainage bottle during the pressing process. When the pressure is relatively large, when extracting abdominal effusion or reducing the cavity of the wound surface, it is easy to cause excessive extraction of abdominal effusion and squeezing of the cavity of the wound surface, affecting the treatment of the patient;

[0006] 3. When reducing the cavity of the wound surface through negative pressure, it is impossible to control the negative pressure at a relatively accurate value, resulting in too large or too small negative pressure, affecting the healing of the wound surface.

[0007] In view of the above problems, the present invention document proposes an abdominal effusion puncture negative pressure drainer with a pressure limiting function and a using method thereof. Summary of the Invention

[0008] The purpose of the present invention is to solve the shortcomings that the pressure in the drainage bottle changes intermittently and pauses in the prior art, it is impossible to control the magnitude of the pressure in the drainage bottle during the pressing process manually, and it is impossible to control the negative pressure at a relatively accurate value, and to propose an abdominal effusion puncture negative pressure drainer with a pressure limiting function and a using method thereof.

[0009] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0010] A peritoneal effusion puncture negative pressure drainage device with a pressure limiting function, comprising a drainage bottle base and a drainage bottle top cover located above the drainage bottle base, and the drainage bottle base and the drainage bottle top cover form a sealed cavity for creating a negative pressure inside the drainage bottle base and the drainage bottle top cover to extract peritoneal effusion. After the peritoneal effusion is drained, the drainage bottle base and the drainage bottle top cover are separated, and the effusion can be quickly discharged;

[0011] It further includes a box body, and the box body is located on one side of the drainage bottle base. Two negative pressure air bags are arranged inside the box body. Squeezing the negative pressure air bags can create a negative pressure inside the drainage bottle base and the drainage bottle top cover;

[0012] A continuous pressing structure is arranged on one side of the box body for alternately and continuously squeezing the two negative pressure air bags, so that the negative pressure inside the drainage bottle base and the drainage bottle top cover can continuously and stably extract peritoneal effusion;

[0013] A pressure reducing structure is arranged on the top of the drainage bottle top cover for reducing the negative pressure between the drainage bottle base and the drainage bottle top cover to ensure that the pressure between the drainage bottle base and the drainage bottle top cover is at a stable value.

[0014] In a possible design, the continuous pressing structure includes two sliding seats slidably connected to one side of the box body. Fixed blocks are welded to the sides of the two sliding seats close to each other. Convex rods are welded to one side of the two fixed blocks. A rotating rod is rotatably connected to one side of the box body. Two sliding holes are arranged inside the rotating rod, and the convex rods are slidably matched with the sliding holes. Two first connecting rods are rotatably connected to one side of the two sliding seats. Two pressing plates are slidably connected to the inner wall of the top of the box body. The two pressing plates on the same side are adhesively connected to both sides of the negative pressure air bag respectively. A pin rod is fixed to one side of the pressing plate by a bolt. One end of the pin rod slidably penetrates the box body, and one end of the pin rod rotatably penetrates the first connecting rod; Through the cooperation of the rotating rod and the two convex rods, the two sliding seats can be alternately and continuously driven to move up and down reciprocally, so that the pressing plates can continuously press the two negative pressure air bags, so that the negative pressure inside the drainage bottle base and the drainage bottle top cover can continuously and smoothly extract peritoneal effusion, avoiding discomfort to the patient caused by intermittent extraction.

[0015] In a possible design, the continuous pressing structure also includes a second connecting rod rotatably connected to one side of the box body, wherein a sliding plate is slidably connected to the bottom of one of the sliding seats, a rotating shaft is fixed to one side of the sliding plate by bolts, one end of the rotating shaft rotates and penetrates the second connecting rod, a turntable is rotatably connected to one side of the box body, an eccentric pin is fixed to the side of the turntable deviating from the center of the circle by bolts, a sliding hole slidably matched with the eccentric pin is provided in the second connecting rod, a driving motor is provided in the box body, and the output shaft of the driving motor is fixedly connected to one side of the turntable, and a control structure is provided in the box body, and the negative pressure value generated each time the negative pressure airbag is squeezed can be controlled by the control structure; the turntable is driven to rotate by the driving motor, and the turntable drives the second connecting rod to reciprocate through the cooperation of the eccentric pin and the sliding hole, and the second connecting rod drives one of the sliding seats to reciprocate up and down through the rotating shaft and the sliding plate, and the two sliding seats move back and forth up and down alternately through the rotating rod, the fixed block and the sliding hole, so that the negative pressure airbag can be squeezed alternately and uninterruptedly through the squeezing plate, and then the negative pressure airbag can be squeezed at a uniform speed, ensuring that the ascites can be continuously and smoothly extracted.

[0016] In a possible design, the control structure includes a threaded rod rotatably connected to the box body, and one end of the threaded rod extends to the outside of the box body, an inner wall of one side of the box body is slidably connected to a frame, and the drive motor is fixed to the top of the frame by bolts, one end of the threaded rod threadedly penetrates the frame, and a clearance hole is provided on one side of the box body, and the clearance hole is used to make way for the movement of the drive motor and the turntable; the threaded rod is rotated to drive the drive motor to move, and the drive motor drives the turntable to move. The movement of the turntable can control the sliding range of the eccentric pin in the sliding hole, and then the amplitude of the reciprocating rotation of the second connecting rod can be controlled, and the distance that the extrusion plate squeezes the negative pressure airbag can be controlled, thereby controlling the negative pressure generated by each squeezing of the negative pressure airbag to avoid excessive or insufficient negative pressure caused by artificial squeezing.

[0017] In a possible design, the decompression structure includes an air injection cylinder fixed to the top of the top cover of the drainage bottle by bolts. A communicating pipe is fixedly penetrated through the bottom of the air injection cylinder, and the bottom end of the communicating pipe extends into the top cover of the drainage bottle. A concentric sealing ring is fixed in the air injection cylinder by bolts. A plurality of sliding rods are fixed to the top of the concentric sealing ring by bolts. The outer walls of the plurality of sliding rods are slidably sleeved with the same piston plate. A sealing plug is fixed to the bottom of the piston plate by bolts, and the bottom end of the sealing plug extends into the concentric sealing ring and seals the concentric sealing ring. Two L-shaped air-permeable holes are provided in the sealing plug, and the two L-shaped air-permeable holes are symmetrically arranged. A screw rod is rotatably connected to the top of the piston plate, and the top end of the screw rod threadedly penetrates through the air injection cylinder and extends above the air injection cylinder; when the negative pressure in the drainage bottle base and the top cover of the drainage bottle is too large, resulting in the wound surface being squeezed, rotate the screw rod, and the screw rod drives the piston plate and the sealing plug to move upward. One end of the L-shaped air-permeable hole moves out of the concentric sealing ring. At this time, the gas discharged from the negative pressure airbag enters the drainage bottle base and the top cover of the drainage bottle through the L-shaped air-permeable hole, which is used to reduce the negative pressure in the drainage bottle base and the top cover of the drainage bottle. The negative pressure value is read in real time through the airbag pressure gauge to ensure that the negative pressure in the drainage bottle base and the top cover of the drainage bottle is within a suitable range to reduce the cavity of the wound surface.

[0018] In a possible design, a same first connecting pipe is provided at the tops of the two negative pressure airbags. Two air inlet one-way valves are provided on the outer wall of the first connecting pipe, and the two air inlet one-way valves are respectively used for one-way air inlet into the two negative pressure airbags. A second connecting pipe is sleeved on the outer wall of the first connecting pipe, and the second connecting pipe is communicated with the first connecting pipe. An airbag pressure gauge is provided on the outer wall of the second connecting pipe. One end of the second connecting pipe extends into the top cover of the drainage bottle. An air outlet pipe is provided at the bottom of each of the two negative pressure airbags. Air outlet one-way valves are sleeved on the outer walls of the two air outlet pipes. The bottom ends of the two air outlet pipes are fixedly connected to a same U-shaped pipe. A return air pipe is provided on one side of the U-shaped pipe and is communicated with the U-shaped pipe. One end of the return air pipe extends into the air injection cylinder, and one end of the return air pipe is located above the concentric sealing ring; when the negative pressure airbag is squeezed, the gas in the drainage bottle base and the top cover of the drainage bottle is discharged into the air injection cylinder through the cooperation of the air inlet one-way valve and the air outlet one-way valve, so that a negative pressure is formed in the drainage bottle base and the top cover of the drainage bottle, and then the abdominal cavity effusion can be extracted. The gas discharged from the negative pressure airbag is discharged into the air injection cylinder through the return air pipe, which is used to control the pressure in the drainage bottle base and the top cover of the drainage bottle later.

[0019] In a possible design, a sealing ring is fixedly sleeved on the outer wall of the top cover of the drainage bottle, and the sealing ring is located on the outer wall of the drainage bottle base. The sealing ring can ensure the sealing performance between the drainage bottle base and the top cover of the drainage bottle. A drainage pipe is fixedly penetrated through the top cover of the drainage bottle, and a puncture needle is fixed to one end of the drainage pipe.

[0020] In one possible design, a plurality of ultraviolet sterilization lamps are fixed to the top inner wall of the drainage bottle top cover by bolts, and the ultraviolet sterilization lamps are used to sterilize the inside of the drainage bottle base and the drainage bottle top cover. A filter is fixed to the inside of the drainage bottle top cover by bolts, and the bottom end of the drainage tube passes through the filter and is located in the drainage bottle base. When the second connecting tube extracts the gas in the drainage bottle base and the drainage bottle top cover, the gas can be filtered through the filter.

[0021] In one possible design, a rotating ball is rotatably connected inside the sealing plug, and both sides of the rotating ball extend into two L-shaped air holes respectively, the outer wall of the rotating ball is provided with a plurality of grooves, a rotating shaft is rotatably connected inside the sealing plug, and one end of the rotating shaft is fixedly passed through the rotating ball, and a small motor for driving the rotating shaft to rotate is provided inside the sealing plug; the rotating ball is driven to rotate by the rotating shaft, and when the groove rotates into the L-shaped air hole, the groove discharges the gas in the L-shaped air hole into the bottom of the concentric closed ring, and then the gas can be intermittently discharged into the drainage bottle base and the drainage bottle top cover, so as to finely adjust the negative pressure value.

[0022] In the present application, a method for using a peritoneal effusion puncture negative pressure drainage device with a pressure limiting function comprises the following steps:

[0023] S1: Driving motor and turntable linkage: Start the driving motor to drive the turntable to rotate, and drive the second connecting rod to reciprocate through the cooperation of the eccentric pin and the sliding hole. The sliding seat is driven to move up and down alternately through the rotating shaft and the sliding plate. The extrusion plate is used to continuously squeeze the negative pressure airbag, and the air inlet check valve and the air outlet check valve are used to form negative pressure to extract the peritoneal effusion.

[0024] S2: Screw-adjusted negative pressure release: When the negative pressure in the drainage bottle is too large, turn the screw to drive the piston plate and the sealing plug upward, so that the L-shaped air hole is separated from the concentric closed ring, and the gas discharged from the negative pressure airbag enters the drainage bottle through the air hole. The negative pressure value is monitored using the airbag pressure gauge.

[0025] S3: Precise control of the rotating ball: The rotating ball is driven to rotate by the shaft to align the groove with the L-shaped air hole, and the gas is intermittently discharged into the drainage bottle to achieve fine adjustment of the negative pressure value.

[0026] S4: Threaded rod controls extrusion amplitude: Rotate the threaded rod to adjust the position of the drive motor, change the sliding range of the turntable and the eccentric pin, thereby controlling the rotation amplitude of the second connecting rod and the extrusion distance of the extrusion plate on the negative pressure airbag, and adjusting the amount of negative pressure generated.

[0027] Beneficial effects: In the present invention, a rotating rod is rotatably connected to one side of the box body. Both sliding seats are slidably engaged with the rotating rod through convex rods. Two first connecting rods are rotatably connected to one side of each of the two sliding seats. A pin rod is fixed to one side of the pressing plate by a bolt, and one end of the pin rod rotatably penetrates through the first connecting rod. Through the cooperation of the rotating rod and the two convex rods, the two sliding seats can be alternately and continuously driven to move up and down reciprocally, so that the pressing plate can continuously press the two negative pressure air bags, thereby enabling the negative pressure in the drainage bottle base and the drainage bottle top cover to continuously and stably extract peritoneal effusion, avoiding discomfort caused to the patient by intermittent extraction.

[0028] In the present invention, a sealing plug is fixed to the bottom of the piston plate. Two L-shaped air vents are provided in the sealing plug. A screw rod is rotatably connected to the top of the piston plate and threadedly penetrates through the top of the air injection cylinder. When the screw rod rotates, it drives the piston plate and the sealing plug to move upward. At this time, the gas discharged from the negative pressure air bag enters the drainage bottle base and the drainage bottle top cover through the L-shaped air vents, which is used to reduce the negative pressure in the drainage bottle base and the drainage bottle top cover. The negative pressure value is read in real time through the air bag pressure gauge to ensure that the negative pressure in the drainage bottle base and the drainage bottle top cover is within an appropriate range to reduce the wound surface cavity.

[0029] In the present invention, a rotating ball is rotatably connected in the sealing plug, and both sides of the rotating ball extend into the two L-shaped air vents respectively. A plurality of grooves are provided on the outer wall of the rotating ball. By driving the rotating ball to rotate through a rotating shaft, when the grooves rotate into the L-shaped air vents, the grooves discharge the gas in the L-shaped air vents below the concentric closed ring, and thus the gas can be intermittently discharged into the drainage bottle base and the drainage bottle top cover for fine adjustment of the negative pressure value.

[0030] In the present invention, a frame is slidably connected to one side inner wall of the box body, and the driving motor is fixed to the top of the frame by a bolt. One end of the threaded rod threadedly penetrates through the frame. Rotating the threaded rod drives the driving motor to move, and the driving motor drives the turntable to move. Through the movement of the turntable, the sliding range of the eccentric pin in the sliding hole can be controlled, and thus the reciprocating rotation amplitude of the second connecting rod can be controlled, and the distance for the pressing plate to press the negative pressure air bag can be controlled, so as to control the negative pressure generated by each pressing of the negative pressure air bag and avoid the phenomenon of excessive or too small negative pressure caused by manual pressing.

[0031] In the present invention, the operation of stably extracting peritoneal effusion can be completed by alternately and continuously pressing the negative pressure air bag, avoiding discomfort caused to the patient by intermittent extraction. In addition, through the lifting of the sealing plug and the rotation of the rotating ball, the drainage bottle base and the drainage bottle top cover can be precisely decompressed to ensure that the pressure in the drainage bottle base and the drainage bottle top cover is in a stable state, which is used to reduce the wound surface cavity and is beneficial to the healing of the wound tissue. Description of the Drawings

[0032] Figure 1 A schematic diagram of the three-dimensional structure of a peritoneal effusion puncture negative pressure drainage device with a pressure limiting function provided in Example 1 of the present invention;

[0033] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure of a drainage bottle base and a drainage bottle top cover of a peritoneal effusion puncture negative pressure drainage device with a pressure limiting function provided in Example 1 of the present invention;

[0034] Figure 3 A schematic diagram of a three-dimensional cross-sectional structure of an insufflation cylinder of a peritoneal effusion puncture negative pressure drainage device with a pressure limiting function provided in Example 1 of the present invention;

[0035] Figure 4 A schematic diagram of a three-dimensional exploded cross-sectional structure of a concentric closed ring, a sealing plug and a piston plate of a peritoneal effusion puncture negative pressure drainage device with a pressure limiting function provided in Example 1 of the present invention;

[0036] Figure 5 A schematic diagram of the three-dimensional structure of a box body of a peritoneal effusion puncture negative pressure drainage device with a pressure limiting function provided in Example 1 of the present invention;

[0037] Figure 6 A schematic diagram of the three-dimensional structure of the cooperation between the relinquishment hole and the driving motor of a peritoneal effusion puncture negative pressure drainage device with a pressure limiting function provided in Example 1 of the present invention;

[0038] Figure 7 A three-dimensional structural schematic diagram of a continuous pressing structure of a peritoneal effusion puncture negative pressure drainage device with a pressure limiting function provided in Example 1 of the present invention;

[0039] Figure 8 A schematic diagram of the three-dimensional structure of an extrusion plate, a negative pressure airbag and a pin rod of a peritoneal effusion puncture negative pressure drainage device with a pressure limiting function provided in Example 1 of the present invention;

[0040] Figure 9 A schematic diagram of the three-dimensional structure of the cooperation between the slide seat and the second connecting rod of a peritoneal effusion puncture negative pressure drainage device with a pressure limiting function provided in Example 1 of the present invention;

[0041] Figure 10 A schematic diagram of a three-dimensional exploded structure of a turntable, a second connecting rod and a driving motor of a peritoneal effusion puncture negative pressure drainage device with a pressure limiting function provided in Example 1 of the present invention;

[0042] Figure 11 A schematic diagram of the main cross-sectional structure of a sealing plug of a peritoneal effusion puncture negative pressure drainage device with a pressure limiting function provided in Example 2 of the present invention;

[0043] Figure 12Schematic diagram when installing the protective shell of a peritoneal effusion puncture negative pressure drainage device with a pressure limiting function provided by the present invention.

[0044] In the figure: 1, drainage bottle base; 2, drainage bottle top cover; 3, sealing ring; 4, drainage tube; 5, puncture needle; 6, box body; 7, negative pressure airbag; 8, extrusion plate; 9, first connecting pipe; 10, intake one-way valve; 11, second connecting pipe; 12, airbag pressure gauge; 13, pin rod; 14, first connecting rod; 15, sliding seat; 16, rotating rod; 17, fixed block; 18, convex rod; 19, sliding hole; 20, sliding plate; 21, rotating shaft; 22, second connecting rod; 23, driving motor; 24, turntable; 25, eccentric pin; 26, sliding hole; 27, threaded rod; 28, frame; 29, relief hole; 30, air injection cylinder; 31, communicating pipe; 32, concentric closed ring; 33, piston plate; 34, sliding rod; 35, screw; 36, sealing plug; 37, L-shaped ventilation hole; 38, ultraviolet germicidal lamp; 39, filter screen; 40, U-shaped tube; 41, outlet one-way valve; 42, return air pipe; 43, outlet pipe; 44, rotating ball; 45, groove; 46, rotating shaft; 47, protective shell. Specific embodiments

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0046] Example 1, referring to Figures 1-10 , a peritoneal effusion puncture negative pressure drainage device with a pressure limiting function, which is applied in the field of drainage devices, includes a drainage bottle base 1 (wall thickness 3 mm) and a drainage bottle top cover 2 made of medical-grade polycarbonate (ISO 10993 certified). The two form a sealed cavity through a silicone rubber sealing ring 3 (Shore hardness 50 ± 5) to form a negative pressure inside the drainage bottle base 1 and the drainage bottle top cover 2 to extract peritoneal effusion. After the peritoneal effusion is completed, separating the drainage bottle base 1 and the drainage bottle top cover 2 can quickly drain the effusion;

[0047] It also includes a box body 6, and the box body 6 is located on one side of the drainage bottle base 1. The box body 6 is made of aluminum alloy 6061-T6 (anodized treatment), and two medical silicone negative pressure airbags 7 (wall thickness 2 mm, burst pressure ≥ 200 kPa) are provided inside. Squeezing the negative pressure airbag 7 can form a negative pressure inside the drainage bottle base 1 and the drainage bottle top cover 2.

[0048] Referring to Figure 1 , Figure 2 , Figure 7 and Figure 8, at the top of the two negative pressure air bags 7, there is a same first connecting pipe 9. Two air inlet check valves 10 are arranged on the outer wall of the first connecting pipe 9, and the two air inlet check valves 10 are respectively used for one-way air inlet of the two negative pressure air bags 7. A second connecting pipe 11 is sleeved on the outer wall of the first connecting pipe 9, and the second connecting pipe 11 is communicated with the first connecting pipe 9. An air bag pressure gauge 12 is arranged on the outer wall of the second connecting pipe 11. One end of the second connecting pipe 11 extends into the top cover 2 of the drainage bottle. At the bottom of the two negative pressure air bags 7, there are air outlet pipes 43. Air outlet check valves 41 are sleeved on the outer walls of the two air outlet pipes 43. The bottom ends of the two air outlet pipes 43 are fixedly connected with a same U-shaped pipe 40. A return air pipe 42 is arranged on one side of the U-shaped pipe 40 and is communicated with the U-shaped pipe 40. One end of the return air pipe 42 extends into the air injection cylinder 30, and one end of the return air pipe 42 is located above the concentric closed ring 32; when squeezing the negative pressure air bag 7, through the cooperation of the air inlet check valve 10 and the air outlet check valve 41, the gas in the drainage bottle base 1 and the top cover 2 of the drainage bottle is discharged into the air injection cylinder 30, so that a negative pressure is formed in the drainage bottle base 1 and the top cover 2 of the drainage bottle, and thus abdominal effusion can be extracted. Moreover, the gas discharged from the negative pressure air bag 7 is discharged into the air injection cylinder 30 through the return air pipe 42, which is used to control the pressure in the drainage bottle base 1 and the top cover 2 of the drainage bottle later.

[0049] Refer to Figure 1 and Figure 2 , on the inner wall of the top of the top cover 2 of the drainage bottle, a plurality of ultraviolet germicidal lamps 38 (which can be UVC LED lamps (wavelength 275nm, radiation intensity 90μW / cm 2 )) are fixed by bolts. The ultraviolet germicidal lamps 38 are used to sterilize the inside of the drainage bottle base 1 and the top cover 2 of the drainage bottle. A filter screen 39 is fixed in the top cover 2 of the drainage bottle by bolts. The bottom end of the drainage pipe 4 passes through the filter screen 39 and is located in the drainage bottle base 1. When the second connecting pipe 11 extracts the gas in the drainage bottle base 1 and the top cover 2 of the drainage bottle, the filter screen 39 can filter the gas.

[0050] Refer to Figure 1 and Figure 2 , a sealing ring 3 is fixedly sleeved on the outer wall of the top cover 2 of the drainage bottle, and the sealing ring 3 is located on the outer wall of the drainage bottle base 1. The sealing ring 3 can ensure the sealing performance between the drainage bottle base 1 and the top cover 2 of the drainage bottle. A drainage pipe 4 is fixedly penetrated in the top cover 2 of the drainage bottle, and a puncture needle 5 is fixed at one end of the drainage pipe 4.

[0051] Refer to Figures 5-9, the drainage device further includes a continuous pressing structure disposed on one side of the box body 6 for alternately and continuously squeezing the two negative pressure air bags 7, so that the negative pressure in the drainage bottle base 1 and the drainage bottle top cover 2 can continuously and stably extract peritoneal effusion; the continuous pressing structure includes two sliding seats 15 slidably connected to one side of the box body 6, fixed blocks 17 are welded to the sides of the two sliding seats 15 close to each other, convex rods 18 are welded to one side of the two fixed blocks 17, a rotating rod 16 is rotatably connected to one side of the box body 6, two sliding holes 19 are provided in the rotating rod 16, and the convex rod 18 is slidably matched with the sliding hole 19. Two first connecting rods 14 are rotatably connected to one side of the two sliding seats 15. Two pressing plates 8 are slidably connected to the inner wall of the top of the box body 6. The two pressing plates 8 on the same side are adhesively connected to both sides of the negative pressure air bag 7 respectively. A pin rod 13 is fixed to one side of the pressing plate 8 by bolts. One end of the pin rod 13 slidably penetrates through the box body 6, and one end of the pin rod 13 rotatably penetrates through the first connecting rod 14; through the cooperation of the rotating rod 16 and the two convex rods 18, the two sliding seats 15 can be alternately and continuously driven to move up and down reciprocally, so that the pressing plates 8 can continuously press the two negative pressure air bags 7, so that the negative pressure in the drainage bottle base 1 and the drainage bottle top cover 2 can continuously and stably extract peritoneal effusion, avoiding discomfort caused to the patient by intermittent extraction.

[0052] Refer to Figure 9 , the continuous pressing structure further includes a second connecting rod 22 rotatably connected to one side of the box body 6. A sliding plate 20 is slidably connected to the bottom of one of the sliding seats 15. A rotating shaft 21 is fixed to one side of the sliding plate 20 by bolts. One end of the rotating shaft 21 rotatably penetrates through the second connecting rod 22. A turntable 24 is rotatably connected to one side of the box body 6. An eccentric pin 25 is fixed to the side of the turntable 24 deviating from the center by bolts. A sliding hole 26 slidably matched with the eccentric pin 25 is provided in the second connecting rod 22. A driving motor 23 is provided in the box body 6, and the output shaft of the driving motor 23 is fixed to one side of the turntable 24. A control structure is provided in the box body 6, and the negative pressure value generated each time the negative pressure air bag 7 is squeezed can be controlled through the control structure; by driving the turntable 24 to rotate by the driving motor 23, the turntable 24 drives the second connecting rod 22 to reciprocally rotate through the cooperation of the eccentric pin 25 and the sliding hole 26. The second connecting rod 22 drives one of the sliding seats 15 to move up and down reciprocally through the rotating shaft 21 and the sliding plate 20, and the two sliding seats 15 alternately reciprocally move up and down through the rotating rod 16, the fixed block 17 and the sliding hole 19. Therefore, the pressing plate 8 can alternately and continuously, and thus can uniformly squeeze the negative pressure air bag 7, ensuring that peritoneal effusion can be continuously and stably extracted.

[0053] Refer to Figure 9 and Figure 10, the control structure includes a threaded rod 27 rotatably connected inside the box body 6, and one end of the threaded rod 27 extends to the outside of the box body 6. A rack 28 is slidably connected to one inner wall of the box body 6, and the driving motor 23 is fixed to the top of the rack 28 by bolts. One end of the threaded rod 27 threadedly penetrates through the rack 28. A relief hole 29 is provided on one side of the box body 6, and the relief hole 29 is used to make way for the movement of the driving motor 23 and the turntable 24; rotating the threaded rod 27 drives the driving motor 23 to move, the driving motor 23 drives the turntable 24 to move, and the movement of the turntable 24 can control the sliding range of the eccentric pin 25 in the sliding hole 26, thereby controlling the amplitude of the reciprocating rotation of the second connecting rod 22 and the distance between the pressing plate 8 and the negative pressure air bag 7, so as to control the negative pressure generated by each extrusion of the negative pressure air bag 7 and avoid the phenomenon of excessive or too small negative pressure caused by manual extrusion.

[0054] Refer to Figures 2-4 , the drainage device further includes a pressure relief structure provided on the top of the drainage bottle top cover 2 for maintaining the negative pressure between the drainage bottle base 1 and the drainage bottle top cover 2 and ensuring that the pressure between the drainage bottle base 1 and the drainage bottle top cover 2 is at a stable value; the pressure relief structure includes an air injection cylinder 30 fixed to the top of the drainage bottle top cover 2 by bolts. A communicating pipe 31 is fixedly penetrated through the bottom of the air injection cylinder 30, and the bottom end of the communicating pipe 31 extends into the drainage bottle top cover 2. A concentric sealing ring 32 is fixed inside the air injection cylinder 30 by bolts. A plurality of sliding rods 34 are fixed to the top of the concentric sealing ring 32 by bolts. The outer walls of the plurality of sliding rods 34 are slidably sleeved with the same piston plate 33. A sealing plug 36 is fixed to the bottom of the piston plate 33 by bolts, and the bottom end of the sealing plug 36 extends into the concentric sealing ring 32 and seals the concentric sealing ring 32. Two L-shaped air permeable holes 37 are provided in the sealing plug 36, and the two L-shaped air permeable holes 37 are symmetrically arranged. A stainless steel 316L screw rod 35 is rotatably connected to the top of the piston plate 33, and the top end of the screw rod 35 threadedly penetrates through the air injection cylinder 30 and extends above the air injection cylinder 30; when the negative pressure in the drainage bottle base 1 and the drainage bottle top cover 2 is too high, resulting in the wound surface being squeezed, rotate the screw rod 35, the screw rod 35 drives the piston plate 33 and the sealing plug 36 to move upward, and one end of the L-shaped air permeable hole 37 moves out of the concentric sealing ring 32. At this time, the gas discharged from the negative pressure air bag 7 enters the drainage bottle base 1 and the drainage bottle top cover 2 through the L-shaped air permeable hole 37 to reduce the negative pressure in the drainage bottle base 1 and the drainage bottle top cover 2. The negative pressure value is read in real time through the air bag pressure gauge 12 to ensure that the negative pressure in the drainage bottle base 1 and the drainage bottle top cover 2 is within a suitable range to reduce the wound surface cavity.

[0055] Example 2, refer to Figure 11, on the basis of Embodiment 1, an improvement is made: a rotating ball 44 is rotatably connected inside the sealing plug 36, and both sides of the rotating ball 44 extend into two L-shaped ventilation holes 37 respectively. A plurality of grooves 45 are provided on the outer wall of the rotating ball 44. A rotating shaft 46 is rotatably connected inside the sealing plug 36, and one end of the rotating shaft 46 fixedly penetrates through the rotating ball 44. A small motor for driving the rotation of the rotating shaft 46 is provided inside the sealing plug 36; the rotating ball 44 is driven to rotate by the rotating shaft 46. When the groove 45 rotates into the L-shaped ventilation hole 37, the gas in the L-shaped ventilation hole 37 is discharged below the concentric closed ring 32, and then the gas can be intermittently discharged into the drainage bottle base 1 and the drainage bottle top cover 2 for finely adjusting the negative pressure value.

[0056] As Figure 12 shown, a protective shell 47 is installed on one side of the box body 6 by screws. The protective shell 47 is used to protect the first connecting rod 14, the sliding seat 15, the rotating rod 16, and the fixed block 17.

[0057] A method for using an abdominal effusion puncture negative pressure drainage device with a pressure limiting function includes the following steps:

[0058] S1. During drainage, insert the puncture needle 5 into the patient's abdominal cavity, start the drive motor 23 to drive the turntable 24 to rotate. The turntable 24 drives the second connecting rod 22 to reciprocate through the cooperation of the eccentric pin 25 and the sliding hole 26. The second connecting rod 22 drives one of the sliding seats 15 to reciprocate up and down through the rotating shaft 21 and the sliding plate 20, and the two sliding seats 15 reciprocate up and down alternately through the rotating rod 16, the fixed block 17, and the sliding hole 19. Therefore, the extrusion plate 8 can alternately, continuously, and continuously extrude the negative pressure airbag 7. During the process of extruding the negative pressure airbag 7, the gas in the drainage bottle base 1 and the drainage bottle top cover 2 can be discharged into the air injection cylinder 30 through the cooperation of the intake one-way valve 10 and the outlet one-way valve 41, so that a negative pressure is formed in the drainage bottle base 1 and the drainage bottle top cover 2, and then abdominal effusion can be extracted. Since the two negative pressure airbags 7 are alternately and continuously extruded, the abdominal effusion can be extracted uniformly and continuously, avoiding discomfort to the patient;

[0059] S2. When the puncture needle 5 is inserted into the wound surface, the negative pressure in the drainage bottle base 1 and the drainage bottle top cover 2 is required to reduce the cavity. When the negative pressure in the drainage bottle base 1 and the drainage bottle top cover 2 is too large and the wound surface is squeezed, rotate the screw rod 35. The screw rod 35 drives the piston plate 33 and the sealing plug 36 to move upward. One end of the L-shaped ventilation hole 37 moves out of the concentric closed ring 32. At this time, the gas discharged from the negative pressure airbag 7 enters the drainage bottle base 1 and the drainage bottle top cover 2 through the L-shaped ventilation hole 37 to reduce the negative pressure in the drainage bottle base 1 and the drainage bottle top cover 2. The negative pressure value is read in real time through the airbag pressure gauge 12 to ensure that the negative pressure in the drainage bottle base 1 and the drainage bottle top cover 2 is within an appropriate range to reduce the cavity of the wound surface;

[0060] S3. When precise negative pressure control is required, the rotating ball 44 is driven to rotate by the rotating shaft 46. When the groove 45 rotates into the L-shaped ventilation hole 37, the gas in the L-shaped ventilation hole 37 is discharged below the concentric closed ring 32 by the groove 45, so that the gas can be intermittently discharged into the drainage bottle base 1 and the drainage bottle top cover 2 for fine adjustment of the negative pressure value.

[0061] S4. Rotate the threaded rod 27 to drive the drive motor 23 to move. The drive motor 23 drives the turntable 24 to move. By moving the turntable 24, the sliding range of the eccentric pin 25 in the sliding hole 26 can be controlled. Furthermore, the amplitude of the reciprocating rotation of the second connecting rod 22 can be controlled, and the distance between the pressing plate 8 and the negative pressure airbag 7 can be controlled, so as to control the negative pressure generated by each extrusion of the negative pressure airbag 7, and avoid the phenomenon of excessive or too small negative pressure caused by manual extrusion.

[0062] However, as is well known to those skilled in the art, the working principles and wiring methods of the drive motor 23, the ultraviolet germicidal lamp 38, and the airbag pressure gauge 12 are common knowledge. They all belong to conventional means or well-known common sense, and will not be elaborated here. Those skilled in the art can make arbitrary selections according to their needs or convenience.

[0063] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. A negative pressure drainage device for peritoneal effusion puncture with pressure limiting function, characterized in that: The device comprises a drainage bottle base (1) and a drainage bottle top cover (2) located above the drainage bottle base (1), wherein the drainage bottle base (1) and the drainage bottle top cover (2) form a sealed cavity, which is used to form a negative pressure in the drainage bottle base (1) and the drainage bottle top cover (2) to extract the peritoneal effusion, and after the peritoneal effusion is completed, the drainage bottle base (1) and the drainage bottle top cover (2) are separated, so that the effusion can be quickly discharged; The device further comprises a box body (6), and the box body (6) is located on one side of the drainage bottle base (1), and two negative pressure air bags (7) are arranged in the box body (6), and negative pressure can be formed in the drainage bottle base (1) and the drainage bottle top cover (2) by squeezing the negative pressure air bags (7); A continuous pressing structure is arranged on one side of the box body (6) and is used to alternately and continuously squeeze the two negative pressure air bags (7) so that the negative pressure in the drainage bottle base (1) and the drainage bottle top cover (2) can continuously and stably extract the peritoneal effusion; The pressure reducing structure is arranged on the top of the drainage bottle top cover (2) and is used to reduce the negative pressure between the drainage bottle base (1) and the drainage bottle top cover (2) to ensure that the pressure between the drainage bottle base (1) and the drainage bottle top cover (2) is at a stable value.

2. The ascites puncture negative pressure drainage device with pressure limiting function according to claim 1, characterized in that: The continuous pressing structure comprises two slide seats (15) slidably connected to one side of the box body (6), a fixed block (17) is welded on one side of the two slide seats (15) close to each other, and a convex rod (18) is welded on one side of the two fixed blocks (17). A rotating rod (16) is rotatably connected to one side of the box body (6), and two sliding holes (19) are provided in the rotating rod (16), and the convex rod (18) and the sliding holes (19) are slidably matched. One side of the two slide seats (15) are rotatably connected to two first connecting rods (14), and the top inner wall of the box body (6) is slidably connected to two extrusion plates (8), and the two extrusion plates (8) located on the same side are respectively glued to the two sides of the negative pressure airbag (7), and a pin rod (13) is fixed to one side of the extrusion plate (8) by bolts, and one end of the pin rod (13) slides through the box body (6), and one end of the pin rod (13) rotates through the first connecting rod (14).

3. The ascites puncture negative pressure drainage device with pressure limiting function according to claim 2, characterized in that: The continuous pressing structure also includes a second connecting rod (22) rotatably connected to one side of the box body (6), wherein a sliding plate (20) is slidably connected to the bottom of one of the sliding seats (15), a rotating shaft (21) is fixed to one side of the sliding plate (20) by bolts, and one end of the rotating shaft (21) rotates through the second connecting rod (22), a rotating disk (24) is rotatably connected to one side of the box body (6), an eccentric pin (25) is fixed to the side of the rotating disk (24) deviating from the center of the circle by bolts, and a sliding hole (26) slidably matched with the eccentric pin (25) is provided in the second connecting rod (22), a driving motor (23) is provided in the box body (6), and the output shaft of the driving motor (23) is fixedly connected to one side of the rotating disk (24), and a control structure is provided in the box body (6), and the negative pressure value generated each time the negative pressure airbag (7) is squeezed can be controlled by the control structure.

4. The ascites puncture negative pressure drainage device with pressure limiting function according to claim 3, characterized in that: The control structure comprises a threaded rod (27) rotatably connected to the inside of the box (6), and one end of the threaded rod (27) extends to the outside of the box (6), an inner wall of one side of the box (6) is slidably connected to a frame (28), and a drive motor (23) is fixed to the top of the frame (28) by bolts, one end of the threaded rod (27) is threadedly passed through the frame (28), and a clearance hole (29) is provided on one side of the box (6), and the clearance hole (29) is used to make way for the movement of the drive motor (23) and the turntable (24).

5. The ascites puncture negative pressure drainage device with pressure limiting function according to claim 4, characterized in that: The decompression structure comprises an air injection cylinder (30) fixed to the top of the drainage bottle top cover (2) by bolts, a connecting pipe (31) is fixedly passed through the bottom of the air injection cylinder (30), and the bottom end of the connecting pipe (31) extends into the drainage bottle top cover (2), a concentric closed ring (32) is fixed in the air injection cylinder (30) by bolts, a plurality of sliding rods (34) are fixed to the top of the concentric closed ring (32) by bolts, and the outer walls of the plurality of sliding rods (34) are slidingly sleeved with the same piston plate (33), The bottom of the piston plate (33) is fixed with a sealing plug (36) by bolts, and the bottom end of the sealing plug (36) extends into the concentric closed ring (32) and seals the concentric closed ring (32). Two L-shaped air holes (37) are provided in the sealing plug (36), and the two L-shaped air holes (37) are symmetrically arranged. The top of the piston plate (33) is rotatably connected with a screw rod (35), and the top thread of the screw rod (35) passes through the gas injection cylinder (30) and extends to the top of the gas injection cylinder (30).

6. The ascites puncture negative pressure drainage device with pressure limiting function according to claim 5, characterized in that: The tops of the two negative pressure airbags (7) are provided with a same first connecting pipe (9), the outer wall of the first connecting pipe (9) is provided with two air intake check valves (10), and the two air intake check valves (10) are respectively used for one-way air intake of the two negative pressure airbags (7), the outer wall of the first connecting pipe (9) is sleeved with a second connecting pipe (11), and the second connecting pipe (11) is connected to the first connecting pipe (9), the outer wall of the second connecting pipe (11) is provided with an airbag pressure gauge (12), and the second connecting pipe (11) One end of the two negative pressure air bags (7) extends into the top cover (2) of the drainage bottle, an air outlet pipe (43) is provided at the bottom of each of the two negative pressure air bags (7), an air outlet non-return valve (41) is sleeved on the outer wall of each of the two air outlet pipes (43), the bottom ends of the two air outlet pipes (43) are fixedly connected to the same U-shaped pipe (40), a connected air return pipe (42) is provided on one side of the U-shaped pipe (40), and one end of the air return pipe (42) extends into the air injection cylinder (30), and one end of the air return pipe (42) is located above the concentric closed ring (32).

7. The ascites puncture negative pressure drainage device with pressure limiting function according to claim 6, characterized in that: The outer wall of the drainage bottle top cover (2) is fixedly sleeved with a sealing ring (3), and the sealing ring (3) is located on the outer wall of the drainage bottle base (1). The sealing ring (3) can ensure the sealing between the drainage bottle base (1) and the drainage bottle top cover (2). A drainage tube (4) is fixedly penetrated in the drainage bottle top cover (2), and a puncture needle (5) is fixed at one end of the drainage tube (4).

8. The ascites puncture negative pressure drainage device with pressure limiting function according to claim 7, characterized in that: A plurality of ultraviolet sterilization lamps (38) are fixed to the inner wall of the top of the drainage bottle cover (2) by means of bolts, and the ultraviolet sterilization lamps (38) are used to sterilize the interior of the drainage bottle base (1) and the drainage bottle cover (2). A filter screen (39) is fixed to the drainage bottle cover (2) by means of bolts, and the bottom end of the drainage tube (4) passes through the filter screen (39) and is located in the drainage bottle base (1).

9. The ascites puncture negative pressure drainage device with pressure limiting function according to claim 8, characterized in that: A rotating ball (44) is rotatably connected inside the sealing plug (36), and both sides of the rotating ball (44) extend into two L-shaped air holes (37) respectively. The outer wall of the rotating ball (44) is provided with a plurality of grooves (45). A rotating shaft (46) is rotatably connected inside the sealing plug (36), and one end of the rotating shaft (46) is fixedly passed through the rotating ball (44). A small motor for driving the rotating shaft (46) to rotate is provided inside the sealing plug (36).

10. The method for using the ascites puncture negative pressure drainage device with pressure limiting function according to claim 9, characterized in that: The following steps are involved: S1, the driving motor (23) and the rotating disk (24) are linked: the driving motor (23) is started to drive the rotating disk (24) to rotate, and the second connecting rod (22) is driven to reciprocate through the cooperation of the eccentric pin (25) and the sliding hole (26), and the sliding seat (15) is driven to move up and down alternately through the rotating shaft (21) and the sliding plate (20), and the negative pressure airbag (7) is continuously squeezed by the squeezing plate (8), and the negative pressure is formed in cooperation with the air inlet check valve (10) and the air outlet check valve (41) to extract the peritoneal effusion; S2, the screw (35) regulates the negative pressure release: when the negative pressure in the drainage bottle is too large, the screw (35) is rotated to drive the piston plate (33) and the sealing plug (36) to move upward, so that the L-shaped vent hole (37) is separated from the concentric closed ring (32), and the gas discharged from the negative pressure airbag (7) enters the drainage bottle through the vent hole, and the negative pressure value is monitored by the airbag pressure gauge (12); S3, precise control of the rotating ball (44): the rotating ball (44) is driven to rotate by the rotating shaft (46), so that the groove (45) is aligned with the L-shaped air hole (37), and the gas is intermittently discharged into the drainage bottle, so as to achieve fine adjustment of the negative pressure value; S4, the threaded rod (27) controls the extrusion amplitude: the threaded rod (27) is rotated to adjust the position of the driving motor (23), and the sliding range of the rotating disk (24) and the eccentric pin (25) is changed, thereby controlling the rotation amplitude of the second connecting rod (22) and the extrusion distance of the extrusion plate (8) on the negative pressure airbag (7), and adjusting the amount of negative pressure generated.

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