Puncture drainage device for thoracic surgery department

Abstract

The invention discloses a thoracic surgery puncture drainage apparatus, which relates to the technical field of medical puncture drainage, and comprises a drainage needle, a drainage tube communicated with the drainage needle, and a negative pressure part communicated with the drainage tube, the negative pressure component comprises an expansion rubber pipe and a shell, an adjusting assembly matched with the expansion rubber pipe is installed on the shell, and the adjusting assembly is used for driving the expansion rubber pipe to stretch and deform. The drainage device has the advantages that when pleural effusion drainage is carried out, adaptive negative pressure drainage can be carried out according to the fluctuation frequency and fluctuation degree of the thoracic cavity, damage to the thoracic cavity is effectively reduced, meanwhile, pressurization dredging can be carried out when slight blockage is caused, backwashing dredging is carried out on the drainage device when high blockage is caused, dredging and drainage integration is achieved, and the drainage effect is good. And back-flushing dredging air is prevented from entering the drainage apparatus to cause drainage infection, so that the drainage apparatus has higher safety and is more convenient to operate.

Description

Technical Field

[0001] The invention relates to the technical field of medical puncture and drainage, and in particular to a thoracic surgery puncture and drainage device. Background Art

[0002] Puncture and drainage is a technique commonly used in clinical treatment. It is mainly performed through puncture under local anesthesia or general anesthesia to drain the accumulated fluid, pus or gas in the body. The drainer is one of the devices needed for puncture and drainage.

[0003] At present, puncture drainage tube blockage is a common problem, which may lead to poor drainage effect and complications. Traditional drainage tubes are easily blocked by fibrous tissue, blood clots and foreign matter during use, thus affecting the drainage effect, which is not conducive to improving the surgical effect and has a great impact on the patient's recovery speed.

[0004] Therefore, publication number CN221555837U discloses a thoracic surgery anti-blockage puncture drainage device, which includes a drainage mechanism and a filtering mechanism, the drainage mechanism includes a filtering drainage tube and a transmission drainage tube, one end of the filtering drainage tube is fixedly connected to an infusion connector, the other end of the filtering drainage tube is fixedly connected to the filtering mechanism, one end of the transmission drainage tube is fixedly connected to a drainage bag, the other end of the transmission drainage tube is fixedly connected to the filtering mechanism, the filtering mechanism includes a filtering shell, a filtering component is arranged in the filtering shell, and a monitoring component is arranged on the filtering mechanism.

[0005] The above-mentioned drain device can effectively filter out fibrous tissue, blood clots and foreign matter in the drainage fluid through the filtering mechanism, which can effectively prevent the occurrence of blockage problems and avoid blockage of the drainage tube. However, when the above-mentioned drain device is used in practice, the drainage mechanism and the filtering drainage tube still have the probability of blockage. Like the existing drain device, the drainage tube is connected to the one-way tube. After blockage, the drainage tube and the drainage needle are backwashed and unblocked by replacing the one-way tube. The replacement operation is cumbersome, and during replacement, outside air will enter the drainage tube, resulting in an increased probability of wound infection. Secondly, the existing and the above-mentioned drain devices all use a collection bag to collect the accumulated fluid. The negative pressure of the collection bag is constant, and the probability of blockage is high.

[0006] Therefore, a novel thoracic surgery puncture drainage device can be used to solve the shortcomings of the prior art. Summary of the invention

[0007] The purpose of the present invention is to solve the problems existing in the prior art and to propose a thoracic surgery puncture drainage device.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A thoracic surgical puncture drainage device, comprising a drainage needle and a drainage tube connected to the drainage needle, and also comprising a negative pressure component connected to the drainage tube;

[0010] The negative pressure component includes an expansion rubber tube and a shell, an adjustment component matched with the expansion rubber tube is installed on the shell, the adjustment component is used to drive the expansion rubber tube to expand and contract, and the pressure change and constant pressure extraction of the pleural effusion are achieved through the expansion and contraction of the expansion rubber tube. The upper part of the expansion rubber tube is fixedly connected with a drainage syringe, and the drainage syringe is connected to the drainage tube through a third control component. The bottom of the expansion rubber tube is fixedly connected with a drainage bucket, and the drainage bucket is fixedly connected with a connecting pipe, and the drainage bucket is installed with a collecting part and a backwashing part;

[0011] The collecting part comprises a collecting bottle, which is connected to the drainage bucket through a second control component; the backwashing part comprises a cleaning bottle, which is fixed with a connector, and the connector is connected to the connecting pipe through a first control component.

[0012] Preferably, the adjustment component includes a negative pressure hood fixedly mounted inside the outer shell, an upper driving ring and a lower driving ring being rotatably mounted on the negative pressure hood, the upper driving ring and the lower driving ring being fixedly connected via a connecting ring, a plurality of push grooves being provided on the upper driving ring and the lower driving ring, a plurality of patches being fixedly mounted on the side wall of the expansion rubber tube, a cross bar being fixedly mounted on each of the patches, two rotating rods matching the push grooves on the corresponding upper driving ring and the lower driving ring being rotatably mounted on each of the cross bars, and a driving mechanism matching the upper driving ring is installed on the negative pressure hood.

[0013] Preferably, the driving mechanism includes a driving motor fixedly mounted on the negative pressure hood, a shaft rod is rotatably mounted on the negative pressure hood, the shaft rod and the driving end of the driving motor are connected through a crawler unit, a gear is fixedly mounted on the shaft rod, and a gear ring meshing with the gear is fixedly mounted on the upper driving ring.

[0014] Preferably, the third control component includes a first shell, both ends of which are fixedly connected to the drainage syringe and the drainage tube respectively, a first sealing ball is installed in the first shell through a first pressing mechanism, the diameter of the first sealing ball is larger than the diameter of the upper opening of the first shell, a backwash hole is opened on the first sealing ball, a one-way mechanism matching the backwash hole is installed on the first sealing ball, and a first locking mechanism matching the first sealing ball is installed on the first shell.

[0015] Preferably, the first pressing mechanism comprises a plurality of first fixing frames fixedly mounted inside the first shell, each of the first fixing frames is fixedly mounted with a first elastic telescopic rod, and each of the first elastic telescopic rods is fixedly connected to the first blocking ball.

[0016] Preferably, the one-way mechanism comprises a plurality of second elastic telescopic rods fixedly mounted in the backwash hole, and a sealing disk matched with the backwash hole is fixedly mounted on the telescopic ends of the plurality of second elastic telescopic rods.

[0017] Preferably, the first locking mechanism includes a first rotating ring installed on the outside of the first shell through a threaded groove, a plurality of first sliding grooves are opened on the side wall of the first shell, a first push rod matching with a first blocking ball is slidably installed in each of the first sliding grooves, a first sealing ring is slidably installed on the outside of the first shell, the first sealing ring and the plurality of first push rods are fixedly connected, and the first rotating ring and the first sealing ring are rotatably connected.

[0018] Preferably, the first control component includes a second shell, both ends of which are respectively connected to the drainage bucket and the collecting bottle, a second sealing ball is installed in the second shell through a second pressing mechanism, the diameter of the second sealing ball is larger than the diameter of the upper port of the second shell, and a second locking mechanism matching the second sealing ball is installed on the second shell.

[0019] Preferably, the second pressing mechanism comprises a plurality of second fixing frames fixedly mounted on the inner wall of the second shell, each of the second fixing frames is fixedly mounted with a third elastic telescopic rod, and each telescopic end of the third elastic telescopic rod is fixedly connected to the second blocking ball.

[0020] Preferably, the second locking mechanism includes a second rotating ring threadably mounted on the outside of the second shell, a second sealing ring is rotatably mounted on the second rotating ring, the second sealing ring is slidably connected to the second shell, a plurality of second push rods cooperating with the second sealing balls are fixedly mounted on the second sealing ring, each of the second push rods passes through the second shell and extends into the interior of the second shell, and a plurality of grooves cooperating with the corresponding second push rods are opened on the side wall of the second shell.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. When draining pleural effusion, the puncture drainage device drives the expansion rubber tube to expand and contract by setting an adjustment component to simulate the rise and fall of chest breathing. It can automatically adjust the negative pressure according to the internal pressure of the chest cavity, with better adaptability. It can also enhance the negative pressure when a slight blockage occurs, which is used for pressurization and dredging, and can effectively reduce the probability of blockage.

[0023] 2. When the puncture drainage device is used to drain pleural effusion, the speed of expansion and contraction of the expansion rubber tube is changed by setting the rotation speed of the driving motor in the driving mechanism to adjust the negative pressure, and the expansion and contraction frequency of the expansion rubber tube is adjusted by changing the reversing speed of the driving motor to match the chest breathing frequency and avoid damage to the chest due to excessive chest negative pressure.

[0024] 3. When the puncture drainage device is used to drain pleural effusion, the one-way tube is replaced by the first control component, the second control component and the third control component. There is no need to replace the one-way tube for backwashing and dredging. The flow direction of the liquid inside the drainage device is directly changed through the first locking mechanism, the second locking mechanism and the one-way mechanism. The operation is simple, the drainage and flushing are integrated, the probability of air infection is reduced, and the safety is higher.

[0025] In summary, when draining pleural effusion, the present invention can perform adaptive negative pressure drainage according to the frequency and degree of chest fluctuation, effectively reducing damage to the chest, and can also perform pressurized dredging when there is slight blockage, and backwash dredge the drain device when there is severe blockage, thereby realizing integrated dredging and drainage, avoiding backwash dredging air from entering the drain device and causing drainage infection, having higher safety and being more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0027] Figure 1 This is a schematic diagram of the structure of a thoracic surgery puncture drainage device proposed by the present invention;

[0028] Figure 2 for Figure 1 Detailed schematic diagram of the structure after removing the outer shell and rotating it to a certain angle;

[0029] Figure 3 for Figure 2 Detailed schematic diagram of the structure after removing the negative pressure cover, drive mechanism and adjustment components;

[0030] Figure 4 for Figure 3 Detailed schematic diagram of the exploded structure after the drainage needle and drainage tube are removed;

[0031] Figure 5 for Figure 4 An enlarged schematic detailed diagram of the expansion rubber tube and its surrounding components;

[0032] Figure 6 for Figure 5 A schematic detailed view of the plan structure along one of the angles;

[0033] Figure 7 for Figure 6Detailed schematic diagram of the three-dimensional structure along the AA section;

[0034] Figure 8 for Figure 4 A schematic diagram of the enlarged structure of the third control component;

[0035] Fig. 9 for Figure 8 A schematic detailed view of the plan structure along one of the angles;

[0036] Fig.10 for Fig. 9 Detailed schematic diagram of the three-dimensional structure along the BB section;

[0037] Fig.11 for Fig.10 A detailed schematic diagram of the structure after the first sealing ring and the first rotating ring are removed and rotated to a certain angle;

[0038] Fig.12 for Fig.11 A schematic detailed diagram of the planar structure of the first blocking ball, the first fixing frame and the first elastic telescopic rod along one of the angles;

[0039] Fig.13 for Fig.12 Detailed schematic diagram of the three-dimensional structure along the CC section;

[0040] Fig.14 for Fig.13 The enlarged structural schematic detail diagram of the D part;

[0041] Fig.15 for Figure 4 A schematic detailed diagram of the enlarged structure of the second control assembly;

[0042] Fig.16 for Fig.15 A schematic detailed view of the plan structure along one of the angles;

[0043] Fig.17 for Fig.16 Detailed schematic diagram of the three-dimensional structure along the EE section;

[0044] Fig.18 for Figure 2 A detailed schematic diagram of the enlarged structure of the medium negative pressure hood, the drive mechanism and the adjustment assembly;

[0045] Fig.19 for Fig.18 Detailed schematic diagram of the structure after the connecting ring is removed;

[0046] Fig. 20 for Fig.19 Detailed schematic diagram of the structure after the negative pressure cover is removed and rotated to a certain angle;

[0047] Fig.21for Fig. 20 Detailed schematic diagram of the exploded structure after removing the drive mechanism.

[0048] In the figure: 1 drainage needle, 2 drainage tube, 3 shell, 4 cleaning bottle, 5 collecting bottle, 6 negative pressure cover, 7 driving mechanism, 8 adjustment component, 9 first control component, 10 second control component, 11 third control component, 12 expansion rubber tube, 13 connector, 14 connecting tube, 15 drainage bucket, 16 drainage syringe, 17 first shell, 18 first sealing ring, 19 first rotating ring, 20 first blocking ball, 21 first fixing frame, 22 first elastic telescopic rod, 23 The first push rod, 24 the first sliding groove, 25 the threaded groove, 26 the sealing disk, 27 the backwashing hole, 28 the second elastic telescopic rod, 29 the second sealing ball, 30 the second shell, 31 the second sealing ring, 32 the second rotating ring, 33 the second fixed frame, 34 the third elastic telescopic rod, 35 the second push rod, 36 the upper driving ring, 37 the lower driving ring, 38 the connecting ring, 39 the driving motor, 40 the crawler unit, 41 the gear, 42 the gear ring, 43 the rotating rod, 44 the pushing groove. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Example 1: Reference Figure 1-Figure 7 , Figure 18-Figure 21 , a thoracic surgical puncture drainage device, comprising a drainage needle 1 and a drainage tube 2 connected to the drainage needle 1, and also comprising a negative pressure component connected to the drainage tube 2;

[0051] The space inside the chest cavity will compress and expand with breathing, so its internal pressure is in a changing state. In order to maintain the pressure balance in the chest cavity, using constant pressure negative pressure drainage will cause certain damage to the chest cavity. Variable pressure drainage is needed to protect the chest cavity.

[0052] During drainage, the drainage needle 1 is inserted into the location of the pleural effusion, and the effusion in the pleural cavity is drained into the drainage tube 2 through the drainage needle 1 by the negative pressure generated by the negative pressure component, and then the effusion is discharged into the negative pressure component through the drainage tube 2 for collection.

[0053] The negative pressure component includes an expansion rubber tube 12 and a shell 3, on which is mounted an adjustment component 8 that matches the expansion rubber tube 12. The adjustment component 8 is used to drive the expansion rubber tube 12 to expand and contract, and to achieve variable pressure and constant pressure extraction of pleural effusion through the expansion and contraction of the expansion rubber tube 12.

[0054] Constant pressure extraction is suitable for non-pleural effusion drainage, and variable pressure is suitable for effusion drainage in the pleural cavity and other variable pressure areas.

[0055] By setting the adjustment component 8 to drive the expansion rubber tube 12 to expand and contract, the chest breathing rise and fall can be simulated, and the negative pressure can be automatically adjusted according to the internal pressure of the chest cavity, with better adaptability. In addition, the negative pressure can be enhanced when a slight blockage occurs, which is used for pressurization and dredging, and can effectively reduce the probability of blockage.

[0056] The adjustment component 8 includes a negative pressure cover 6 fixedly installed inside the outer shell 3, and an upper driving ring 36 and a lower driving ring 37 are rotatably installed on the negative pressure cover 6. The upper driving ring 36 and the lower driving ring 37 are fixedly connected by a connecting ring 38. A plurality of push grooves 44 are provided on the upper driving ring 36 and the lower driving ring 37. A plurality of patches are fixedly installed on the side wall of the expansion rubber tube 12, and a cross bar is fixedly installed on each patch. Two rotating rods 43 that match the corresponding push grooves 44 on the upper driving ring 36 and the lower driving ring 37 are rotatably installed on each cross bar. A driving mechanism 7 that matches the upper driving ring 36 is installed on the negative pressure cover 6.

[0057] The rotation of the upper driving ring 36 will drive the lower driving ring 37 to rotate along with the upper driving ring 36 through the connecting ring 38. The pushing grooves 44 on the upper driving ring 36 and the lower driving ring 37 will push the rotating rod 43 to move. The rotating rod 43 drives the cross bar to move, thereby driving the middle position of the expansion rubber tube 12 to move through the patch, so that the expansion rubber tube 12 changes from the original cylindrical shape to an elliptical shape. At this time, the internal space of the expansion rubber tube 12 increases, generating negative pressure for discharging accumulated fluid.

[0058] A movable groove matching the cross bar is provided on the side wall of the negative pressure cover 6. The cross bar is restricted by the movable groove and cannot move left and right, but can only slide on the negative pressure cover 6 (the cross bar extends out or retracts into the negative pressure cover 6). The rotating rod 43 is located outside the negative pressure cover 6.

[0059] The push groove 44 is designed to be inclined at 45 degrees. When the upper driving ring 36 and the lower driving ring 37 rotate, the side wall of the push groove 44 will resist the rotating rod 43. Due to the inclined design of the push groove 44, it will generate thrusts in two directions on the rotating rod 43. The force in one direction is limited by the movable groove and will not produce any effect, while the thrust in the other direction will push the rotating rod 43 to move on the straight line connecting the center points of the rotating rod 43 and the upper driving ring 36 and the lower driving ring 37, thereby driving the cross bar to extend and retract (move in the movable groove).

[0060] The purpose of the rotational connection between the rotating rod 43 and the cross bar is to convert the sliding friction generated by the pressing into rolling friction when the rotating rod 43 abuts against the side wall of the pushing groove 44, thereby effectively reducing the friction force and extending the service life of the pushing groove 44 and the rotating rod 43.

[0061] The driving mechanism 7 includes a driving motor 39 fixedly mounted on the negative pressure cover 6, on which a shaft is rotatably mounted, the shaft is connected to the driving end of the driving motor 39 via a track unit 40, a gear 41 is fixedly mounted on the shaft, and a gear ring 42 meshing with the gear 41 is fixedly mounted on the upper driving ring 36.

[0062] The driving end of the driving motor 39 rotates to drive the gear 41 to rotate through the crawler unit 40, and then drives the gear ring 42 meshing with the gear 41 to rotate, and the rotation of the gear ring 42 drives the upper driving ring 36 to rotate.

[0063] The crawler unit 40 is an existing transmission structure, which is composed of a crawler and a crawler roller. The purpose of using the crawler unit 40 here is to reduce the influence of the vibration generated by the operation of the drive motor 39 on the rotation of the upper driving ring 36 (the crawler has a certain tension, which can weaken the displacement caused by the vibration, thereby reducing the vibration propagation), so that the upper driving ring 36 can rotate more stably, which is conducive to the precise control of the negative pressure.

[0064] Embodiment 2: This embodiment is different from the embodiment 1 in that: Figure 1-Figure 4 , Figure 8-Figure 17 The upper part of the expansion rubber tube 12 is fixedly connected with a drainage syringe 16, and the drainage syringe 16 is connected to the drainage tube 2 through the third control component 11. The bottom of the expansion rubber tube 12 is fixedly connected with a drainage bucket 15, and the drainage bucket 15 is fixedly connected with a connecting pipe 14. The drainage bucket 15 is equipped with a collecting part and a backwashing part;

[0065] The third control component 11 includes a first shell 17, both ends of which are fixedly connected to the drainage syringe 16 and the drainage tube 2 respectively, and a first blocking ball 20 is installed in the first shell 17 through a first pressing mechanism. The diameter of the first blocking ball 20 is larger than the diameter of the upper opening of the first shell 17, and a backwash hole 27 is opened on the first blocking ball 20. A one-way mechanism matching the backwash hole 27 is installed on the first blocking ball 20, and a first locking mechanism matching the first blocking ball 20 is installed on the first shell 17.

[0066] When the expansion rubber tube 12 expands, negative pressure is generated in the expansion rubber tube 12, which will drain the accumulated fluid in the drainage tube 2 to the drainage syringe 16 (the liquid outlet of the drainage syringe 16 is designed to be inclined, so the accumulated fluid will be discharged along the drainage syringe 16 and will not contact the inner wall of the expansion rubber tube 12), and then the accumulated fluid will pass through the drainage syringe 16 and fall directly into the drainage bucket 15 (the upper opening size of the drainage bucket 15 is larger than the lower opening size, in order to better receive the accumulated fluid).

[0067] The size of the first blocking ball 20 is larger than the diameter of the upper opening of the first shell 17 , so when the first blocking ball 20 abuts against the upper opening of the first shell 17 , the upper opening of the first shell 17 will be blocked, and the accumulated liquid cannot pass through, thus playing a sealing role.

[0068] The first pressing mechanism includes a plurality of first fixing frames 21 fixedly mounted inside the first shell 17 , each of the first fixing frames 21 is fixedly mounted with a first elastic telescopic rod 22 , and each of the first elastic telescopic rods 22 is fixedly connected to the first blocking ball 20 .

[0069] Under the action of the first elastic telescopic rod 22, the first sealing ball 20 will always be against the upper opening of the first shell 17. When negative pressure is generated in the expansion rubber tube 12, the first sealing ball 20 will be pulled to the side close to the expansion rubber tube 12, so that the first sealing ball 20 is always separated from the upper opening of the first shell 17. At this time, the accumulated fluid will pass through the first sealing ball 20 and enter the first shell 17.

[0070] The first fixing frame 21 adopts a partially raised design, which can effectively reduce the probability of accumulation of effusion on the first fixing frame 21 .

[0071] The one-way mechanism includes a plurality of second elastic telescopic rods 28 fixedly mounted in the backwash hole 27 , and a blocking disk 26 matched with the backwash hole 27 is fixedly mounted on the telescopic ends of the plurality of second elastic telescopic rods 28 .

[0072] A limit card is fixedly installed in the backwash hole 27, and a limit groove cooperating with the limit card is opened on the sealing disk 26. Under the action of the limit card and the limit groove, the extent to which the sealing disk 26 retracts into the backwash hole 27 will be limited and it cannot be fully retracted. When the sealing disk 26 is retracted to the limit, the top of the sealing disk 26 is still located outside the backwash hole 27, which can prevent the accumulated liquid from entering the backwash hole 27 and causing liquid accumulation.

[0073] When the drainage device is blocked with high intensity and needs backwashing (high intensity blockage is generally caused by blockage at the needle port of the drainage needle 1, which cannot be cleared by increasing the negative pressure, and backwashing is required), the first blocking ball 20 is locked by the first locking mechanism, so that the first blocking ball 20 is always against the upper opening of the first shell 17, and the first elastic telescopic rod 22 cannot be compressed. At this time, the negative pressure will not drive the first blocking ball 20 to move downward (the upper and lower positions of this place refer to Fig.11 ), the accumulated fluid will not enter the first shell 17. On the contrary, when the expansion rubber tube 12 retracts, the space inside the expansion rubber tube 12 is compressed and the pressure increases (the pressure is greater than the pressure inside the chest cavity), which will push the sealing disk 26 open and introduce the cleaning fluid in the expansion rubber tube 12 into the chest cavity through the backwashing hole 27 to backwash and clear the port of the drainage needle 1.

[0074] The first locking mechanism includes a first rotating ring 19 threadably mounted on the outside of the first shell 17 through a threaded groove 25, a plurality of first sliding grooves 24 are opened on the side wall of the first shell 17, a first push rod 23 cooperating with the first blocking ball 20 is slidably mounted in each first sliding groove 24, a first sealing ring 18 is slidably mounted on the outside of the first shell 17, the first sealing ring 18 and the plurality of first push rods 23 are fixedly connected, and the first rotating ring 19 and the first sealing ring 18 are rotatably connected.

[0075] Rotating the first rotating ring 19 will drive the first sealing ring 18 to move under the action of the thread groove 25, thereby driving the first push rod 23 to move upward (reference to the upper and lower positions). Fig.11 ), so that the first push rod 23 abuts against the first blocking ball 20, and the first blocking ball 20 is locked.

[0076] The first push rod 23 is L-shaped, and the bottom horizontal section of the L-shape is convex, which is consistent with the function of the first fixing frame 21 to avoid accumulation of liquid.

[0077] The collecting part includes a collecting bottle 5, which is connected to the drainage bucket 15 through a second control component 10; the backwashing part includes a cleaning bottle 4, which is fixed with a connector 13, and the connector 13 is connected to the connecting pipe 14 through a first control component 9.

[0078] The first control component 9 includes a second shell 30, both ends of which are respectively connected to the drainage bucket 15 and the collecting bottle 5, and a second sealing ball 29 is installed in the second shell 30 through a second pressing mechanism. The diameter of the second sealing ball 29 is larger than the diameter of the upper port of the second shell 30, and a second locking mechanism matching the second sealing ball 29 is installed on the second shell 30.

[0079] The first control assembly 9 and the second control assembly 10 have the same components, but are oriented differently. The second blocking ball 29 inside the first control assembly 9 is located on the left side (here, left and right refer to Figure 4 ), the second blocking ball 29 inside the second control assembly 10 is located at the upper part (see the upper and lower parts here Figure 4 ).

[0080] During drainage, the fluid in the chest cavity passes through Figure 4 The middle FF pathway drains the accumulated fluid from the chest cavity into the collection bottle 5.

[0081] During backwashing, the cleaning liquid in the cleaning bottle 4 will pass through Figure 4 The middle GG path enters the chest cavity and backwashes and dredges the drainage needle 1.

[0082] The second pressing mechanism includes a plurality of second fixing frames 33 fixedly mounted on the inner wall of the second shell 30 , each of which is fixedly mounted with a third elastic telescopic rod 34 , and each of which has a telescopic end fixedly connected to the second blocking ball 29 .

[0083] The principle of this part is the same as that of the first pressing mechanism mentioned above. For the convenience of distinction, this part is divided into two different groups of mechanisms.

[0084] The second locking mechanism includes a second rotating ring 32 threadably mounted on the outside of the second shell 30, a second sealing ring 31 is rotatably mounted on the second rotating ring 32, the second sealing ring 31 is slidably connected to the second shell 30, a plurality of second push rods 35 cooperating with the second blocking balls 29 are fixedly mounted on the second sealing ring 31, each second push rod 35 penetrates the second shell 30 and extends into the interior of the second shell 30, and a plurality of grooves cooperating with the corresponding second push rods 35 are opened on the side wall of the second shell 30.

[0085] The principle of this part is the same as that of the first locking mechanism mentioned above. For the convenience of distinction, this part is divided into two different groups of mechanisms.

[0086] Rotating the second rotating ring 32 will drive the second sealing ring 31 to move, thereby driving the second push rod 35 so that the second push rod 35 abuts against the second blocking ball 29 to lock the second blocking ball 29 .

[0087] When draining, the second blocking ball 29 in the first control component 9 is locked, the second blocking ball 29 in the second control component 10 is unlocked, and the third control component 11 is unlocked. When the expansion rubber tube 12 expands, negative pressure is generated, and the effusion in the pleural cavity is sucked into the expansion rubber tube 12. Then the expansion rubber tube 12 retracts, and the effusion in the expansion rubber tube 12 is squeezed into the collection bottle 5. The drainage path is as follows: Figure 4 Middle FF path.

[0088] During backwashing, the second blocking ball 29 in the first control component 9 is unlocked, the second blocking ball 29 in the second control component 10 is locked, and the third control component 11 is locked. At this time, the expansion rubber tube 12 expands to generate negative pressure, which will suck the cleaning liquid in the cleaning bottle 4 into the expansion rubber tube 12, and then the expansion rubber tube 12 retracts to squeeze the cleaning liquid in the expansion rubber tube 12 into the chest cavity. The backwashing path is as follows: Figure 4 Middle GG path.

[0089] The specific operation steps of this device are as follows:

[0090] Drainage: The first control component 9 is locked, the second control component 10 is unlocked, the third control component 11 is unlocked, and the drive motor 39 is started. The rotation of the driving end of the drive motor 39 will drive the gear 41 to rotate through the crawler unit 40, and then drive the gear ring 42 meshing with the gear 41 to rotate. The rotation of the gear ring 42 drives the upper driving ring 36 to rotate. The rotation of the upper driving ring 36 will drive the lower driving ring 37 to rotate along with the upper driving ring 36 through the connecting ring 38. The pushing grooves 44 on the upper driving ring 36 and the lower driving ring 37 will push the rotating rod 43 to move, and the rotating rod 43 drives the cross bar to move, thereby driving the middle position of the expansion rubber tube 12 to move through the patch, so that the expansion rubber tube 12 changes from the original cylindrical shape to an elliptical shape. At this time, the internal space of the expansion rubber tube 12 increases, and the effusion in the chest cavity will be sucked into the expansion rubber tube 12. Then the driving end of the drive motor 39 is reversed to squeeze the effusion in the expansion rubber tube 12 into the collection bottle 5.

[0091] Backwashing: the first control component 9 is unlocked, the second control component 10 is locked, the third control component 11 is locked, and the drive motor 39 is started. The rotation of the drive end of the drive motor 39 will drive the gear 41 to rotate through the crawler unit 40, and then drive the gear ring 42 meshing with the gear 41 to rotate. The rotation of the gear ring 42 drives the upper driving ring 36 to rotate. The rotation of the upper driving ring 36 will drive the lower driving ring 37 to rotate along with the upper driving ring 36 through the connecting ring 38. The pushing grooves 44 on the upper driving ring 36 and the lower driving ring 37 will push the rotating rod 43 to move, and the rotating rod 43 drives the cross bar to move, thereby driving the middle position of the expansion rubber tube 12 to move through the patch, so that the expansion rubber tube 12 changes from the original cylindrical shape to an elliptical shape. At this time, the internal space of the expansion rubber tube 12 increases. At this time, when the expansion rubber tube 12 expands and generates negative pressure, the cleaning liquid in the cleaning bottle 4 will be sucked into the expansion rubber tube 12, and then the expansion rubber tube 12 will retract, and the cleaning liquid in the expansion rubber tube 12 will be squeezed into the chest cavity to backwash the drainage needle 1.

[0092] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A thoracic surgical puncture drainage device, comprising a drainage needle (1) and a drainage tube (2) connected to the drainage needle (1), characterized in that: It also includes a negative pressure component connected to the drainage tube (2); The negative pressure component comprises an expansion rubber tube (12) and a housing (3); an adjusting component (8) matched with the expansion rubber tube (12) is mounted on the housing (3); the adjusting component (8) is used to drive the expansion rubber tube (12) to expand and contract, and variable pressure and constant pressure extraction of pleural effusion is achieved through the expansion and contraction of the expansion rubber tube (12); a drainage syringe (16) is fixedly connected to the upper part of the expansion rubber tube (12); the drainage syringe (16) and the drainage tube (2) are connected via a third control component (11); a drainage bucket (15) is fixedly connected to the bottom of the expansion rubber tube (12); a connecting pipe (14) is fixedly connected to the drainage bucket (15); and a collecting portion and a backwashing portion are mounted on the drainage bucket (15); The collecting part comprises a collecting bottle (5), wherein the collecting bottle (5) is connected to a liquid discharge bucket (15) via a second control assembly (10); the backwashing part comprises a cleaning bottle (4), wherein a connector (13) is fixedly connected to the cleaning bottle (4), and the connector (13) is connected to a connecting pipe (14) via a first control assembly (9).

2. The thoracic surgery puncture drainage device according to claim 1, characterized in that: The adjustment component (8) comprises a negative pressure cover (6) fixedly mounted inside the housing (3), an upper driving ring (36) and a lower driving ring (37) being rotatably mounted on the negative pressure cover (6), the upper driving ring (36) and the lower driving ring (37) being fixedly connected via a connecting ring (38), a plurality of push grooves (44) being provided on the upper driving ring (36) and the lower driving ring (37), a plurality of patches being fixedly mounted on the side wall of the expansion rubber tube (12), each of the patches being fixedly mounted on a cross bar, each of the cross bars being rotatably mounted on two rotating rods (43) matching with the push grooves (44) on the corresponding upper driving ring (36) and the lower driving ring (37), and a driving mechanism (7) matching with the upper driving ring (36) being mounted on the negative pressure cover (6).

3. The thoracic surgery puncture drainage device according to claim 2, characterized in that: The driving mechanism (7) comprises a driving motor (39) fixedly mounted on the negative pressure cover (6); a shaft is rotatably mounted on the negative pressure cover (6); the shaft is connected to a driving end of the driving motor (39) via a crawler unit (40); a gear (41) is fixedly mounted on the shaft; and a gear ring (42) meshing with the gear (41) is fixedly mounted on the upper driving ring (36).

4. The thoracic surgery puncture drainage device according to claim 1, characterized in that: The third control component (11) comprises a first shell (17), the two ends of the first shell (17) are fixedly connected to the drainage syringe (16) and the drainage tube (2) respectively, a first blocking ball (20) is installed in the first shell (17) through a first pressing mechanism, the diameter of the first blocking ball (20) is larger than the diameter of the upper opening of the first shell (17), a backwashing hole (27) is opened on the first blocking ball (20), a one-way mechanism matching the backwashing hole (27) is installed on the first blocking ball (20), and a first locking mechanism matching the first blocking ball (20) is installed on the first shell (17).

5. The thoracic surgery puncture drainage device according to claim 4, characterized in that: The first pressing mechanism comprises a plurality of first fixing frames (21) fixedly mounted inside the first shell (17), each of the first fixing frames (21) having a first elastic telescopic rod (22) fixedly mounted thereon, and each of the first elastic telescopic rods (22) being fixedly connected to the first blocking ball (20).

6. The thoracic surgery puncture drainage device according to claim 4, characterized in that: The one-way mechanism comprises a plurality of second elastic telescopic rods (28) fixedly mounted in the backwash hole (27), and a sealing disk (26) matching the backwash hole (27) is fixedly mounted on the telescopic ends of the plurality of second elastic telescopic rods (28).

7. The thoracic surgery puncture drainage device according to claim 4, characterized in that: The first locking mechanism comprises a first rotating ring (19) threadably mounted on the outside of the first shell (17) via a threaded groove (25); a plurality of first sliding grooves (24) are provided on the side wall of the first shell (17); a first push rod (23) matching with a first blocking ball (20) is slidably mounted in each of the first sliding grooves (24); a first sealing ring (18) is slidably mounted on the outside of the first shell (17); the first sealing ring (18) and the plurality of first push rods (23) are fixedly connected; and the first rotating ring (19) and the first sealing ring (18) are rotatably connected.

8. The thoracic surgery puncture drainage device according to claim 1, characterized in that: The first control component (9) comprises a second shell (30), the two ends of the second shell (30) being respectively connected to the drainage bucket (15) and the collecting bottle (5), a second blocking ball (29) being installed in the second shell (30) via a second pressing mechanism, the diameter of the second blocking ball (29) being larger than the diameter of the upper port of the second shell (30), and a second locking mechanism cooperating with the second blocking ball (29) being installed on the second shell (30).

9. The thoracic surgery puncture drainage device according to claim 8, characterized in that: The second pressing mechanism comprises a plurality of second fixing frames (33) fixedly mounted on the inner wall of the second shell (30), each of the second fixing frames (33) being fixedly mounted with a third elastic telescopic rod (34), and the telescopic end of each of the third elastic telescopic rods (34) being fixedly connected to the second blocking ball (29).

10. The thoracic surgery puncture drainage device according to claim 8, characterized in that: The second locking mechanism comprises a second rotating ring (32) threadably mounted on the outside of the second shell (30); a second sealing ring (31) is rotatably mounted on the second rotating ring (32); the second sealing ring (31) is slidably connected to the second shell (30); a plurality of second push rods (35) cooperating with second blocking balls (29) are fixedly mounted on the second sealing ring (31); each of the second push rods (35) passes through the second shell (30) and extends into the interior of the second shell (30); and a plurality of grooves cooperating with corresponding second push rods (35) are provided on the side wall of the second shell (30).

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