Drainage device for thoracic surgery department

Abstract

The invention discloses a thoracic surgery drainage device, and relates to the technical field of thoracic drainage medical instruments, the thoracic surgery drainage device comprises: a first drainage tube, the tail end of which is closed to form an interception part; the branch pipes are communicated with the side face of the first drainage pipe, and the communication position is located between the head end of the first drainage pipe and the interception part. The head end of the second drainage tube is communicated with a plurality of branch tubes, the cross sectional areas of the first drainage tube and the second drainage tube are the same and are A1, the cross sectional areas of the branch tubes are A2, and the total cross sectional areas of the branch tubes are A3 and A3gt; a1gt; a2, the tail end of the second drainage tube is communicated with the drainage bag or the other first drainage tube. When blood is drained to the first drainage tube from the thoracic cavity of a patient, blood clots in the blood can be intercepted in the first drainage tube and are gathered at the position where the interception part is located under the flowing impact effect of the blood, and due to the fact that the communication position of the branch tube is located between the head end of the first drainage tube and the interception part; therefore, the blood with the blood clots intercepted can smoothly flow into the branch pipe without being affected by the blood clots, and the problem of drainage blockage can be reduced or even avoided.

Description

Technical Field

[0001] The invention relates to the technical field of external chest drainage medical devices, and in particular to a drainage device for chest surgery. Background Art

[0002] Closed thoracic drainage is a commonly used treatment method in the field of cardiothoracic surgery, which is used to drain gas and fluid from the thoracic cavity. The thoracic drainage device is a commonly used medical device for closed thoracic drainage, which is mainly composed of a drainage tube, a disposable drainage bottle or a closed drainage bag.

[0003] When the existing drainage device is used for patients with hemothorax, blood clots easily accumulate in the drainage tube and cause blockage. In order to keep the drainage tube unobstructed, the drainage tube needs to be manually squeezed to break up the blood clots. However, manual squeezing is difficult to break up the blood clots, and it is difficult for medical staff to quickly find the location of the blood clot.

[0004] In view of this, how to provide a device that can reduce the blockage of the drainage tube and automatically clear the drainage tube when it is blocked is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] The purpose of the present invention is to provide a thoracic surgery drainage device to solve the problems existing in the prior art.

[0006] To achieve the above object, the present invention provides a thoracic surgery drainage device, comprising:

[0007] A first drainage tube, the first end of which is connected to the patient's chest cavity and the tail end of which is closed to form a retention portion;

[0008] A plurality of branch pipes are connected to the side of the first drainage pipe, and the connection point is located between the head end of the first drainage pipe and the interception portion;

[0009] The second drainage tube, the head end is connected to the multiple branch tubes, the cross-sectional areas of the first drainage tube and the second drainage tube are the same, both are A1, the cross-sectional area of ​​the branch tube is A2, the total cross-sectional area of ​​the multiple branch tubes is A3, A3>A1>A2, the interception portion is used to intercept blood clots, and the tail end of the second drainage tube is connected to the drainage bag or another first drainage tube.

[0010] Furthermore, it also includes:

[0011] A base, the upper surface of which defines a first mounting groove, a second mounting groove and a third mounting groove with flush bottom surfaces, the first drainage pipe is arranged in the first mounting groove, the second drainage pipe is arranged in the second mounting groove, and the plurality of branch pipes are arranged in the third mounting groove;

[0012] The squeezing mechanism, the first drainage tube, the second drainage tube and the branch tubes are all made of flexible materials, and the squeezing mechanism can press down the first drainage tube and / or multiple branch tubes.

[0013] Furthermore, the plurality of branch pipes are stacked from top to bottom to form a multi-layer branch pipe group, the third installation groove is a through groove or the inner wall of the third installation groove is spaced apart from the branch pipe group, and when the extrusion mechanism presses down the branch pipe, the branch pipe can produce lateral deformation.

[0014] Furthermore, the first drainage pipe is connected to the inner wall of the first installation groove.

[0015] Furthermore, the extrusion mechanism comprises:

[0016] A first roller, used for rolling the first drainage tube, has an outer diameter of D1;

[0017] The second roller is used for rolling a plurality of branch pipes, and its outer diameter is D2, D1>D2, a mounting hole is provided in the middle of the first roller, the second roller is adapted to the shape of the mounting hole and is fixed in the mounting hole, and the first roller and the second roller are coaxially arranged;

[0018] A driving mechanism, wherein the driving mechanism can drive the first roller and the second roller to press down the first drainage tube and / or multiple branch tubes.

[0019] Furthermore, it also includes:

[0020] A box body, wherein the base and the driving mechanism are located in the box body, and the base is arranged on the bottom surface of the box body, and the driving mechanism is arranged on the top surface of the box body;

[0021] The first mounting groove and the second mounting groove are arranged along the length direction of the base and have corresponding positions, and the third mounting groove is respectively connected to the first mounting groove and the second mounting groove and is located between the first mounting groove and the second mounting groove.

[0022] Furthermore, the driving mechanism comprises:

[0023] A rotating shaft, wherein the second roller is rotatably connected to the rotating shaft;

[0024] A connecting rod, one end of which is connected to the rotating shaft, and the other end of which extends upward and is connected to the output end of the vertical telescopic motor;

[0025] A slide rail is arranged above the base in the horizontal direction, the vertical telescopic motor is installed on the top seat, and the top seat is slidably connected to the slide rail;

[0026] A horizontal telescopic motor is mounted on the inner surface of the box and / or the slide rail, and an output end of the horizontal telescopic motor is connected to the top seat;

[0027] The vertical telescopic motor can drive the first roller and the second roller to move up and down and press down the first drainage tube and / or multiple branch tubes; the horizontal telescopic motor can drive the first roller and the second roller to move to positions corresponding to the first drainage tube and / or multiple branch tubes.

[0028] Furthermore, the length of the interception portion is 3-5 cm.

[0029] The present invention discloses the following technical effects:

[0030] 1. A plurality of branch tubes are connected on the side of the first drainage tube and a retention portion is provided at the tail end of the first drainage tube; the cross-sectional area of ​​a single branch tube is smaller than that of the first drainage tube, so when blood is drained from the patient's chest cavity to the first drainage tube, blood clots in the blood can be retained in the first drainage tube and gathered at the location of the retention portion under the impact of blood flow; since the connecting position of the branch tube is between the head end of the first drainage tube and the retention portion, the blood after the blood clot is retained can flow smoothly into the branch tube without being affected by the blood clot, thereby reducing or even avoiding the problem of drainage blockage.

[0031] 2. The total cross-sectional area of ​​the multiple branches is larger than the first drainage tube, while the first drainage tube and the second drainage tube have the same cross-sectional area, and the total flow rate remains unchanged. Based on the Bernoulli principle, when blood flows from the first drainage tube into the branch, the blood flow rate decreases. Under the premise that the blood clot has been trapped in the interception part, the blood contains only microscopic blood clots. When the blood flow rate decreases, the impact force of the blood clot decreases, and it is difficult to adhere to the branch, which can further reduce the risk of drainage blockage.

[0032] 3. The present application adopts a first roller and a second roller to roll the first drainage tube and the branch tube respectively. Based on the interception effect of the interception part, the blood clot aggregation position in the first drainage tube is clear, and the interception part can be directly rolled by the first roller to break the blood clot, and the broken blood clot flows out along the branch tube; when a large-area blockage occurs, the first roller and the second roller can also be used to roll the first drainage tube and the branch tube as a whole. The blood clot breaking efficiency is high, the dredging effect is obvious, and the drainage blockage problem can be effectively dealt with.

[0033] 4. The first roller and the second roller are integrated into one and share a unified driving mechanism, with a compact structure and easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1This is a schematic diagram of the anti-blocking unit structure of the present invention;

[0036] Figure 2 It is a layout diagram of the first drainage tube, the second drainage tube and the branch tube;

[0037] Figure 3 is a schematic diagram of the base structure;

[0038] Figure 4 Arrangement diagram for multiple anti-blocking units;

[0039] Figure 5 It is a schematic diagram of the structure of the first roller and the second roller;

[0040] Figure 6 It is a schematic diagram of the overall structure of the present invention;

[0041] Among them, 1. the first drainage pipe; 101. the interception part; 2. the branch pipe; 3. the second drainage pipe; 4. the base; 401. the first installation groove; 402. the second installation groove; 403. the third installation groove; 5. the first roller; 6. the second roller; 7. the box body; 8. the rotating shaft; 9. the connecting rod; 10. the slide rail; 11. the vertical telescopic motor; 12. the horizontal telescopic motor; 13. the top seat. DETAILED DESCRIPTION

[0042] Among the prior arts that have been retrieved, patent CN112972797B discloses an anti-blockage drainage device for thoracic surgery, which includes a sealing tank, an anti-blockage device and a stirring device, which are connected by a hose, and a drainage head is provided at the other end of the hose.

[0043] The anti-blocking device comprises a lower base, an upper cover plate, a U-shaped through groove, a hollow cylinder, an electric push rod, a moving plate, a fixed pulley, a thin rod, a thin round rod, a shaft sleeve, a rotating rod and a rotating blade.

[0044] The stirring device comprises a box body, a micro stirring motor, a stirring rod, a connecting rod and a filter screen.

[0045] The clamping mechanism comprises a fixed plate, a triangular plate, a through rod, a U-shaped frame, a folding plate, a movable rod, an inclined slide groove, a secondary movable rod, an arc plate and a cotton pad.

[0046] This patent uses a hose to extract gas or liquid, and the waste gas or liquid enters the stirring device, the anti-blocking device and the inside of the sealed tank in turn. When the hose is blocked, the one-way air inlet valve enters the air due to the low air pressure in the inner cavity of the sealed tank, thereby avoiding damage to the medical negative suction pump. The micro-stirring motor finally drives the filter to rotate so that the filter can stir the liquid, thereby breaking the blood clot and facilitating its extraction, thereby achieving a preliminary anti-blocking effect. The electric push rod is used to drive the three fixed pulleys to press the hose in the inner cavity of the U-shaped slot back and forth to reduce the blockage of the blood clot.

[0047] The hose is connected to the empty cylinder, and the other side of the empty cylinder is also connected to a hose, but the number of hoses connected to the other side of the empty cylinder is three. These three hoses are embedded in three U-shaped grooves. The terminal ends of these three hoses are connected to the sealing tank. Therefore, the number of flow meters is three, which are respectively set on these three hoses. The purpose of designing three hoses in this way is to allow gas or liquid to be transmitted from these three hoses to the interior of the final sealed tank. If one of the delivery pipes is blocked, it can be discharged from the other two delivery pipes, thereby achieving the ultimate purpose of preventing blockage. Moreover, through the design of three hoses, it ultimately has a diversion effect, and further has a blocking effect on blood clots. Before the blood clots enter the anti-blocking device through the hose, they first enter the empty cylinder. Rotating blades are set in the empty cylinder. After the blood clots and liquids enter, they can drive the rotating blades to rotate, so that the rotating blades set have a certain effect of crushing the blood clots, thereby further having an anti-blocking effect.

[0048] The device can effectively prevent the drainage tube from being blocked. On the basis of the original drainage tube, a stirring mechanism and a hollow cylinder are additionally arranged. Both of them are hollow structures that can buffer and reduce blood pressure, resulting in that normal drainage operation cannot be achieved relying solely on gravity. A negative suction pump must be used to draw blood from the patient's chest cavity.

[0049] In addition, the patent does not consider the drainage blockage problem before the blood enters the stirring device. If the blood can enter the stirring device smoothly, then directly replacing the stirring device with a drainage bag has actually completed the blood collection operation, and there is no point in setting up the subsequent devices. Most importantly, the premise for the normal use of the device is that the blood in the patient's chest cavity can fill the stirring device and the empty cylinder, so that the filter in the stirring device can stir the blood and the rotating blades in the empty cylinder can break up the blood clots. However, not all patients have a large amount of blood effusion, and the limitations of the use of this device are too large.

[0050] In summary, although this patent can solve the problem of drainage blockage, it needs to be used in conjunction with a negative suction pump, and cannot avoid blockage of the drainage tube before the stirring device. It also has requirements for the amount of pleural effusion in the patient and has no practical use value.

[0051] 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.

[0052] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0053] The embodiment of the present invention provides a thoracic surgical drainage device, comprising: a first drainage tube 1 whose head end is connected to the patient's chest cavity through a drainage head, and whose tail end is closed to form a retention portion 101, wherein the length of the retention portion 101 is 3-5 cm; a plurality of branch tubes 2 are connected to the side of the first drainage tube 1, wherein the connection point is located between the head end of the first drainage tube 1 and the retention portion 101; the radius of the branch tube 2 is approximately half of that of the first drainage tube 1, and a total of eight branch tubes 2 are provided, wherein four are located on the left side of the first drainage tube 1, and the other four are located on the left side of the first drainage tube 1. On the right side of the first drainage tube 1, the branch tubes 2 located on the same side are stacked up and down to form a two-layer branch tube group; the second drainage tube 3 has the same inner diameter as the first drainage tube 1, and its head end is connected to multiple branch tubes 2. The cross-sectional areas of the first drainage tube 1 and the second drainage tube 3 are the same, both A1, the cross-sectional area of ​​the branch tube 2 is A2, and the total cross-sectional area of ​​the multiple branch tubes 2 is A3, A3>A1>A2, the retention portion 101 is used to retain blood clots, and the tail end of the second drainage tube 3 is connected to the drainage bag or another first drainage tube 1.

[0054] The flow rate of blood in the first drainage tube 1 and the branch tube 2 is described as follows:

[0055] According to the continuity equation of fluid mechanics: Q = Av where:

[0056] Q is the flow

[0057] A is the cross-sectional area of ​​the pipe

[0058] v is the velocity of the fluid (unit: length / time, such as cm / s)

[0059] When blood enters from a first drainage tube 1 into multiple smaller branches 2, the total flow rate Q remains unchanged, but the cross-sectional area A changes. Specifically, the total cross-sectional area A3 of the multiple branches 2 is greater than A1, so the flow velocity v decreases.

[0060] In this embodiment, a base 4 is also included, and the base 4 is used to position the first drainage tube 1, the second drainage tube 3 and the branch tube 2 as a whole. The upper surface of the base 4 defines a first mounting groove 401, a second mounting groove 402 and a third mounting groove 403 with flush bottom surfaces. The first mounting groove 401 and the second mounting groove 402 are arranged along the length direction of the base 4, and the third mounting groove 403 is arranged along the width direction of the base 4. The first mounting groove 401 is substantially perpendicular to the third mounting groove 403, and the first mounting groove 401 and the second mounting groove 402 correspond in position. The third mounting groove 403 is connected to the first mounting groove 401 and the second mounting groove 402 respectively and is located between the first mounting groove 401 and the second mounting groove 402. The first drainage tube 1 is arranged in the first installation groove 401, the second drainage tube 3 is arranged in the second installation groove 402, and the multiple branch tubes 2 are arranged in the third installation groove 403; the first drainage tube 1, the second drainage tube 3 and the branch tube 2 are all made of flexible material, and the extrusion mechanism can press down the first drainage tube 1 and / or the multiple branch tubes 2.

[0061] In this embodiment, the base 4 and the first drainage tube 1, the second drainage tube 3 and the branch tube 2 on the base 4 constitute an anti-blocking unit. There are multiple anti-blocking units (three anti-blocking units are used as an example in this embodiment). The first drainage tube 1 of the first anti-blocking unit is connected to the drainage head, and a one-way valve is provided at the connection to prevent backflow. The second drainage tube 3 of the last anti-blocking unit is connected to the drainage bag for collecting the patient's chest blood. Adjacent anti-blocking units are connected through the first drainage tube 1 and the second drainage tube 3 to form a multi-stage anti-blocking unit.

[0062] In this embodiment, the first mounting groove 401 and the second mounting groove 402 are through grooves arranged along the length direction of the base 4, and the third mounting groove 403 is a through groove arranged along the width direction of the base 4. When the extrusion mechanism presses down the branch pipe 2, the branch pipe 2 can produce lateral deformation. The first drainage pipe 1 is connected to the inner wall of the first mounting groove 401, the lower half of the first drainage pipe 1 is located in the first mounting groove 401, and the upper half is located outside the first mounting groove 401. In the two-layer branch pipe group formed by multiple branch pipes 2, the lower branch pipe group is located in the third mounting groove 403, and the upper branch pipe group is located outside the third mounting groove 403. The upper half of the first drainage pipe 1 and the upper branch pipe group are structures directly connected to the extrusion mechanism.

[0063] In this embodiment, the extrusion mechanism includes: a first roller 5, used to roll the first drainage tube 1, whose outer diameter is D1, and whose width is slightly smaller than the groove width of the first mounting groove 401; a second roller 6, used to roll multiple branch tubes 2, whose outer diameter is D2, D1>D2, the width of the second roller 6 is slightly smaller than the width of the base 4, a mounting hole is opened in the middle of the first roller 5, the second roller 6 is adapted to the shape of the mounting hole and fixed in the mounting hole, and the first roller 5 and the second roller 6 are coaxially arranged; a driving mechanism, the driving mechanism can drive the first roller 5 and the second roller 6 to press down the first drainage tube 1 and / or multiple branch tubes 2.

[0064] In this embodiment, a box body 7 is further included, in which the base 4 and the driving mechanism are located, and the base 4 is arranged on the bottom surface of the box body 7, and the driving mechanism is arranged on the top surface of the box body 7;

[0065] In this embodiment, the driving mechanism includes: a rotating shaft 8, the second roller 6 is rotatably connected to the rotating shaft 8, and two rotating shafts 8 are symmetrically arranged on the left and right sides of the second roller 6; one end of the connecting rod 9 is connected to the rotating shaft 8, and the other end extends upward and is connected to the output end of the vertical telescopic motor 11; the slide rail 10 is arranged above the base 4 in the horizontal direction, the vertical telescopic motor 11 is installed on the top seat 13, and the top seat 13 is slidably connected to the slide rail 10; the horizontal telescopic motor 12 is installed on the inner surface of the box body 7 and / or the slide rail 10, and the output end of the horizontal telescopic motor 12 is connected to the top seat 13; the vertical telescopic motor 11 can drive the first roller 5 and the second roller 6 to move up and down and press down the first drainage pipe 1 and / or multiple branch pipes 2; the horizontal telescopic motor 12 can drive the first roller 5 and the second roller 6 to move to the position corresponding to the first drainage pipe 1 and / or multiple branch pipes 2.

[0066] In this embodiment, a flow meter is provided at the connection point between the second drainage tube 3 of the last anti-blocking unit and the drainage bag to monitor the blood flow. When it is detected that the blood flow is significantly reduced in a short period of time, or when it is detected that the blood flow is continuously reduced, it is determined that the drainage is blocked and can be unblocked.

[0067] The chest drainage process is as follows:

[0068] S1: The medical staff inserts the drainage head into the patient's chest cavity according to the drainage operation requirements. The patient is in a side-lying state. The device used in this embodiment is located below the patient, and gravity is used to drain the patient's chest blood into the first drainage tube 1;

[0069] S2: Blood flows along the first drainage tube 1 to the vicinity of the interception portion 101. If there is a blood clot in the blood, the blood clot is too large to enter the branch tube 2, and is intercepted in the first drainage tube 1 and gathered in the interception portion 101 of the first drainage tube 1 by the impact of blood flow. The interception portion 101 is located at the tail end of the first drainage tube 1, and the branch tube 2 is connected to the side of the first drainage tube 1. Therefore, the interception of the blood clot does not affect the blood flow. The blood after the blood clot is removed enters the branch tube 2 and enters the second drainage tube 3 from the branch tube 2;

[0070] S3: The blood enters the next anti-blocking unit from the second drainage tube 3, and the blood clot interception operation in step S2 is repeated to avoid blood clot blockage.

[0071] The treatment process when drainage is blocked is as follows:

[0072] When drainage blockage occurs, the first roller 5 and the second roller 6 are first moved to the area where the interception part 101 is located. The interception part 101 is pressed down by the first roller 5 to break up the blood clots gathered inside so that the blood clots can enter the branch pipe 2. The interception part 101 is a clear place where blood clots gather. According to tests, more than 95% of the blockages can be solved by pressing down the interception part 101. The cause of the blockage is mostly that the amount of blood clots has reached the level of covering the opening of the branch pipe 2.

[0073] If pressing down the interception part 101 cannot alleviate the blockage problem, the drainage operation can be suspended. Move the first roller 5 and the second roller 6 to the first anti-blocking unit, align the first roller 5 with the first mounting groove 401, and move the second roller 6 downward until the second roller 6 is in contact with the upper surface of the base 4. At this time, the first drainage tube 1 is in a compressed state. Move the first roller 5 and the second roller 6 along the length direction of the base 4. The first roller 5 continues to squeeze the first drainage tube 1. Since the outer surface of the first drainage tube 1 is in contact with the inner wall of the first mounting groove 401, no horizontal deformation can occur. Therefore, the blood pressure in the first drainage tube 1 surges, and the blood clot is quickly broken and enters the branch tube 2 under the downward pressure of the first roller 5 and the pressure of the internal blood.

[0074] The first roller 5 and the second roller 6 continue to move along the length direction of the base 4. When the second roller 6 moves to the third mounting groove 403, the second roller 6 presses down the upper branch pipe group, and the upper branch pipe group presses down the lower branch pipe group. Under the clamping action of the second roller 6 and the base 4, the upper branch pipe 2 and the lower branch pipe 2 are transversely deformed, and the overall shape changes from a cylindrical shape to a flat elliptical shape, which can compress and break the micro blood clots inside. When the first roller 5 moves to the second mounting groove 402, the first roller 5 can also break the blood clots in the second drainage tube 3 in the same way as in the first mounting groove 401.

[0075] After repeating the above steps several times, the entire pipeline will be unblocked. After testing, all drainage blockages can be cleared by following the above operations.

[0076] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0077] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A thoracic surgical drainage device, characterized in that: include: A first drainage tube (1), the head end of which is connected to the patient's chest cavity and the tail end of which is closed to form a retention portion (101); A plurality of branch pipes (2) are connected to the side of the first drainage pipe (1), and the connection point is located between the head end of the first drainage pipe (1) and the interception portion (101); The second drainage tube (3) has a head end connected to the multiple branch tubes (2); the cross-sectional areas of the first drainage tube (1) and the second drainage tube (3) are the same, namely, A1; the cross-sectional area of ​​the branch tube (2) is A2; the total cross-sectional area of ​​the multiple branch tubes (2) is A3, and A3>A1>A2; the interception portion (101) is used to intercept blood clots; the tail end of the second drainage tube (3) is connected to a drainage bag or another first drainage tube (1).

2. A thoracic surgery drainage device according to claim 1, characterized in that: Also includes: A base (4), the upper surface of which defines a first mounting groove (401), a second mounting groove (402) and a third mounting groove (403) with flush bottom surfaces, the first drainage pipe (1) being arranged in the first mounting groove (401), the second drainage pipe (3) being arranged in the second mounting groove (402), and the plurality of branch pipes (2) being arranged in the third mounting groove (403); The squeezing mechanism is characterized in that the first drainage tube (1), the second drainage tube (3) and the branch tube (2) are all made of flexible materials, and the squeezing mechanism is capable of pressing down the first drainage tube (1) and / or the plurality of branch tubes (2).

3. A thoracic surgery drainage device according to claim 2, characterized in that: The plurality of branch pipes (2) are stacked from top to bottom to form a multi-layer branch pipe group; the third installation groove (403) is a through groove or the inner wall of the third installation groove (403) is spaced apart from the branch pipe group; when the extrusion mechanism presses down the branch pipe (2), the branch pipe (2) can produce lateral deformation.

4. A thoracic surgery drainage device according to claim 3, characterized in that: The first drainage pipe (1) is connected to the inner wall of the first installation groove (401).

5. A thoracic surgery drainage device according to claim 4, characterized in that: The extrusion mechanism comprises: A first roller (5), used for rolling the first drainage tube (1), and having an outer diameter of D1; a second roller (6) for rolling a plurality of branch pipes (2), having an outer diameter of D2, D1>D2; a mounting hole is provided in the middle of the first roller (5); the second roller (6) is adapted to the shape of the mounting hole and is fixed in the mounting hole; the first roller (5) and the second roller (6) are coaxially arranged; A driving mechanism, wherein the driving mechanism is capable of driving the first roller (5) and the second roller (6) to press down the first drainage tube (1) and / or the plurality of branch tubes (2).

6. A thoracic surgery drainage device according to claim 5, characterized in that: Also includes: A box body (7), wherein the base (4) and the driving mechanism are located in the box body (7), and the base (4) is arranged on the bottom surface of the box body (7), and the driving mechanism is arranged on the top surface of the box body (7); The first mounting groove (401) and the second mounting groove (402) are arranged along the length direction of the base (4) and have corresponding positions, and the third mounting groove (403) is respectively connected to the first mounting groove (401) and the second mounting groove (402) and is located between the first mounting groove (401) and the second mounting groove (402).

7. A thoracic surgery drainage device according to claim 6, characterized in that: The driving mechanism comprises: a rotating shaft (8), the second roller (6) being rotatably connected to the rotating shaft (8); A connecting rod (9), one end of which is connected to the rotating shaft (8), and the other end of which extends upward and is connected to the output end of the vertical telescopic motor (11); A slide rail (10) is arranged above the base (4) in a horizontal direction, and the vertical telescopic motor (11) is installed on a top seat (13), and the top seat (13) is slidably connected to the slide rail (10); A horizontal telescopic motor (12) is mounted on the inner surface of the box (7) and / or the slide rail (10), and an output end of the horizontal telescopic motor (12) is connected to the top seat (13); The vertical telescopic motor (11) can drive the first roller (5) and the second roller (6) to move up and down and press down the first drainage tube (1) and / or the multiple branch tubes (2); the horizontal telescopic motor (12) can drive the first roller (5) and the second roller (6) to move to a position corresponding to the first drainage tube (1) and / or the multiple branch tubes (2).

8. A thoracic surgery drainage device according to claim 7, characterized in that: The length of the interception portion (101) is 3-5 cm.

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