Drainage device for cardiothoracic surgery

Abstract

The invention belongs to the technical field of medical equipment, and particularly relates to a drainage device for cardiothoracic surgery, which comprises a mounting shell, a storage part is arranged in the mounting shell, and the storage part is used for storing drainage liquid; a fixing part is further arranged in the mounting shell, and the fixing part can extrude and fix the storage part; the fixing part comprises a driving motor, a driving screw rod, a driving seat, a limiting seat, a rotating seat, a fixing cover, a negative pressure tank and an air pump, the driving motor is fixedly connected with the interior of the mounting shell, the driving screw rod is rotationally arranged in the mounting shell, and the limiting seat is fixedly connected with the driving seat. And one end of the driving screw is fixedly connected with the output end of the driving motor, the driving seat is slidably arranged in the mounting shell, and the interior of the driving seat is in threaded connection with the outer edge of the driving screw. Liquid in the body of a patient is pumped out through the drainage tube, and the liquid can be conveniently replaced after being stored in the storage part.

Description

Technical Field

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

[0002] Drainage devices after cardiothoracic surgery are used to remove blood, fluid, and gas from the surgical site to reduce the risk of infection, promote wound healing, and prevent other complications. These devices are particularly important after heart and chest surgery, because hematomas or fluid accumulation are prone to form after these surgeries, which can affect recovery.

[0003] Initially, the traditional drainage tubes were used in cardiothoracic surgery. After connecting the syringe for extraction, the interface needed to be loosened, the syringe removed, and the accumulated fluid in the syringe drained into the waste bucket. The syringe was then connected to the drainage tube and the above operation was repeated until the accumulated fluid was completely drained. The operation steps were cumbersome. Summary of the invention

[0004] The purpose of the present invention is to provide a drainage device for cardiothoracic surgery, which can extract the fluid in the patient's body through the drainage tube and can also be easily replaced after the internal storage of the storage part is completed.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A drainage device for cardiothoracic surgery, comprising a mounting shell, wherein a storage portion is provided inside the mounting shell, and the storage portion is used to store drainage liquid;

[0007] A fixing portion is also provided inside the installation shell, and the fixing portion can squeeze and fix the storage portion;

[0008] The upper end of the fixing part is provided with a blocking part, and the blocking part can squeeze and block the input end at the fixing part:

[0009] The fixing part includes a driving motor, a driving screw, a driving seat, a limiting seat, a rotating seat, a fixing cover, a negative pressure tank and an air pump. The driving motor is fixedly connected to the interior of the mounting shell, the driving screw is rotatably arranged inside the mounting shell, one end of the driving screw is fixedly connected to the output end of the driving motor, the driving seat is slidably arranged inside the mounting shell, and the interior of the driving seat is threadedly connected to the outer edge of the driving screw, the limiting seat is fixedly connected to the mounting shell, and the outer side of the limiting seat is slidably connected to the inner side of the driving seat, the lower end of the rotating seat is rotatably connected to the interior of the limiting seat, the upper end of the rotating seat is slidably connected to the inner side of the lower end of the driving seat, the fixing cover is fixedly arranged on the upper end of the driving seat, the negative pressure tank is fixedly arranged inside the mounting shell, the negative pressure tank is connected to the interior of the fixing cover through a pipeline, and the input end of the air pump is connected to the interior of the negative pressure tank.

[0010] In a preferred solution, an arc-shaped limiting groove is provided inside the limiting seat, and the limiting groove matches the rotation path of the rotating seat.

[0011] In a preferred embodiment, an extrusion groove is provided at the lower end of the driving seat, the extrusion groove cooperates with the limiting groove, and a vertical locking section and an inclined extrusion section are provided inside the extrusion groove.

[0012] In a preferred embodiment, an air guide groove is provided inside the fixed cover, and the inside of the air guide groove is connected to the inside of the negative pressure tank through a pipeline. A flow guide pipe is also provided inside the fixed cover, and the flow guide pipe is connected to the inside of the blocking part.

[0013] In a preferred embodiment, an air pressure monitor is provided at the negative pressure tank.

[0014] In a preferred embodiment, the storage part is provided with a storage tank, a mounting seat, a sliding column, a connecting frame, an elastic reset member, a closing plate and a closing ball. The upper end of the storage tank cooperates with the interior of the fixed cover, the lower end of the storage tank cooperates with the interior of the rotating seat, the lower end of the mounting seat is fixedly connected to the inner side of the lower end of the storage tank, the sliding column is slidably arranged inside the mounting seat, the lower end of the connecting frame is fixedly connected to the lower end of the sliding column, the elastic reset member is arranged between the mounting seat and the sliding column, the lower end of the closing plate is fixedly connected to the upper end of the connecting frame, the closing plate corresponds vertically to the fixed cover, the closing ball is arranged inside the mounting seat, and the closing ball corresponds vertically to the sliding column.

[0015] In a preferred solution, the interior of the closing ball is configured to be hollow.

[0016] In a preferred embodiment, a plurality of guide grooves are provided inside the mounting seat at the closing ball.

[0017] In a preferred embodiment, the blocking part includes a connecting tube, a fixing rod, an extrusion block and an elastic extrusion piece, one end of the connecting tube is connected to the guide tube inside the fixing cover, the fixing rod is fixedly arranged inside the mounting shell, the extrusion block is slidably arranged inside the mounting shell, and the extrusion block is vertically corresponding to the fixing rod, the connecting tube is located between the fixing rod and the extrusion block, the upper end of the elastic extrusion piece is fixedly connected to the lower end of the extrusion block, and the lower end of the elastic extrusion piece is fixedly connected to the upper end of the driving seat.

[0018] In a preferred embodiment, the upper end of the extrusion block is configured to be in an arc shape.

[0019] The technical effects achieved by the present invention are:

[0020] The present invention adopts the design of the storage part, through which the drained liquid can be stored, and the sealing ball is used to block the inside of the mounting seat when the drained liquid flows back, so as to prevent the liquid from flowing back into the patient's body; at the same time, when the storage part needs to be taken out of the interior of the mounting shell, the sliding column and the support frame can be pushed to move by the elastic extrusion member, so that the sliding column can squeeze the sealing ball to block the inside of the mounting seat, and at the same time, the support frame can drive the sealing plate to be inserted between the mounting seat and the storage tank for sealing, so as to achieve the sealing of the interior of the storage part and prevent the storage part from leaking during the replacement process;

[0021] The present invention adopts the design of the fixed part, and the driving motor drives the driving screw to rotate. The rotation of the driving screw can drive the driving seat to move vertically inside the installation shell, and the driving seat can first drive the fixed cover to move upward and separate from the storage part, so that the storage part loses the squeezing of the fixed cover and is self-sealed. As the driving seat continues to move, the driving seat can squeeze the rotating seat, so that the rotating seat rotates and drives the storage part to extend out of the installation shell. The elongation of the storage part is convenient for operators to replace; the reverse rotation of the driving screw can make the rotating seat first drive the newly installed storage part;

[0022] The present invention adopts the design of the blocking part, and the movement of the driving seat can drive the elastic extrusion part and the extrusion block to move, so that the extrusion block moves toward the fixed rod, thereby squeezing the connecting tube between the extrusion block and the fixed rod, so that the connecting tube is closed due to deformation, and the connection between the drainage tube and the storage part is blocked by the closure of the connecting tube, thereby preventing the air inside the connecting tube from entering the patient's body through the drainage tube and causing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an overall schematic diagram of an embodiment of the present invention;

[0024] Figure 2 is a schematic diagram of an integral rotating seat extending out of an embodiment of the present invention;

[0025] Figure 3 is a cross-sectional view of the interior of the housing installed in an embodiment of the present invention;

[0026] Figure 4 is an overall cross-sectional view of an embodiment of the present invention;

[0027] Figure 5 An embodiment of the present invention Figure 4 Schematic diagram at A in the middle;

[0028] Figure 6 is an overall exploded view of an embodiment of the present invention;

[0029] Figure 7 is an exploded view of a storage portion of an embodiment of the present invention;

[0030] Figure 8 is an exploded view of a blocking portion of an embodiment of the present invention;

[0031] Fig. 9 is a cross-sectional view of the interior of a fixed cover according to an embodiment of the present invention;

[0032] Fig.10 2 is a cross-sectional view of a sliding column according to an embodiment of the present invention.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1. Install the shell; 2. Storage part; 201. Storage tank; 202. Mounting seat; 203. Sliding column; 204. Connecting frame; 205. Elastic reset member; 206. Closing plate; 207. Closing ball; 3. Fixing part; 301. Driving motor; 302. Driving screw; 303. Driving seat; 3031. Extrusion groove; 304. Limiting seat; 3041. Limiting groove; 305. Rotating seat; 306. Fixed cover; 3061. Air guide groove; 3062. Guide pipe; 307. Negative pressure tank; 308. Air pump; 4. Blocking part; 401. Connecting pipe; 402. Fixing rod; 403. Extrusion block; 404. Elastic extrusion member. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0038] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0039] See also Figures 1 to 10As shown, the present invention provides a drainage device for cardiothoracic surgery, comprising a mounting shell 1, wherein a storage portion 2 is disposed inside the mounting shell 1, and the storage portion 2 is used to store drainage liquid;

[0040] A fixing portion 3 is also provided inside the mounting housing 1, and the fixing portion 3 can squeeze and fix the storage portion 2;

[0041] The upper end of the fixing part 3 is provided with a blocking part 4, which can squeeze and block the input end of the fixing part 3:

[0042] The fixing part 3 includes a driving motor 301, a driving screw 302, a driving seat 303, a limiting seat 304, a rotating seat 305, a fixing cover 306, a negative pressure tank 307 and an air pump 308. The driving motor 301 is fixedly connected to the interior of the mounting shell 1, the driving screw 302 is rotatably arranged inside the mounting shell 1, one end of the driving screw 302 is fixedly connected to the output end of the driving motor 301, the driving seat 303 is slidably arranged inside the mounting shell 1, and the interior of the driving seat 303 is threadedly connected to the outer edge of the driving screw 302, and the limiting seat 305 is fixedly connected to the inner edge of the driving screw 302. The position seat 304 is fixedly connected to the mounting shell 1, and the outer side of the limit seat 304 is slidingly connected to the inner side of the driving seat 303, the lower end of the rotating seat 305 is rotationally connected to the inside of the limit seat 304, the upper end of the rotating seat 305 is slidingly connected to the inner side of the lower end of the driving seat 303, the fixed cover 306 is fixedly set on the upper end of the driving seat 303, the negative pressure tank 307 is fixedly set inside the mounting shell 1, the negative pressure tank 307 is connected to the inside of the fixed cover 306 through a pipeline, and the input end of the air pump 308 is connected to the inside of the negative pressure tank 307.

[0043] Specifically, the drainage tube blocking part 4 at the patient's location is connected so that the patient's drainage tube is connected to the storage part 2, and the air pressure inside the negative pressure tank 307 is changed by starting the air pump 308 so that the air pressure inside the negative pressure tank 307 is always lower than the air pressure at the patient's heart and chest, thereby making the air pressure inside the storage part 2 always lower than the air pressure at the patient's pneumothorax, and utilizing the negative pressure inside the storage part 2 to extract the liquid at the patient's heart and chest;

[0044] When the liquid in the storage part 2 is full and needs to be replaced, the drive motor 301 is started to drive the drive screw 302 to rotate. The rotation of the drive screw 302 can drive the drive seat 303 to move vertically inside the mounting shell 1, so that the drive seat 303 can first drive the fixed cover 306 to move upward and separate from the storage part 2, so that the storage part 2 loses the squeezing of the fixed cover 306 and is self-sealed. At the same time, the drive seat 303 can squeeze the blocking part 4, so that the blocking part 4 squeezes and seals the connection between the drainage tube and the storage part 2. As the drive seat 303 continues to move, the drive seat 303 can squeeze the rotating seat 305, so that the rotating seat 305 rotates and drives the storage part 2 to extend out of the mounting shell 1, thereby facilitating the replacement of the storage part 2.

[0045] After the new storage part 2 is installed into the interior of the rotating seat 305, the driving motor 301 drives the driving screw 302 to rotate in the opposite direction, and the reverse rotation of the driving screw 302 drives the driving seat 303 to move in the opposite direction, so that the movement of the driving seat 303 first squeezes the rotating seat 305, so that the rotating seat 305 drives the storage part 2 to rotate into the interior of the installation shell 1, and as the driving seat 303 continues to move, the driving seat 303 drives the fixed cover 306 to insert into the upper end of the storage part 2, so that the fixed cover 306 and the storage part 2 are docked and fixed.

[0046] See also Figure 6 As shown, an arc-shaped limiting groove 3041 is provided inside the limiting seat 304, and the limiting groove 3041 matches the rotation path of the rotating seat 305. In the initial state, the rotating seat 305 is inside the mounting shell 1, and the upper end of the rotating seat 305 is at one end of the limiting groove 3041. When the driving seat 303 moves, it can squeeze the upper end of the rotating seat 305, so that the upper end of the rotating seat 305 can slide along the inside of the limiting groove 3041 toward the other end of the limiting groove 3041, so that the rotating seat 305 can rotate and extend;

[0047] The limiting groove 3041 provides guidance and limitation for the rotation of the rotating seat 305, thereby ensuring the stability of the rotating seat 305 during rotation.

[0048] See also Figure 6 As shown, an extrusion groove 3031 is provided at the lower end of the driving seat 303, and the extrusion groove 3031 cooperates with the limiting groove 3041, and a vertical locking section and an inclined extrusion section are provided inside the extrusion groove 3031;

[0049] When the rotating seat 305 needs to extend out of the mounting shell 1, the upper end of the rotating seat 305 is located at the upper end of the locking section of the extrusion groove 3031. During the upward movement of the driving seat 303, the rotating seat 305 is in a stationary state because the rotating seat 305 is located inside the locking section of the extrusion groove 3031. At the same time, the upward movement of the driving seat 303 can drive the fixed cover 306 to separate from the storage portion 2.

[0050] As the driving seat 303 continues to move, the upper end of the rotating seat 305 enters the interior of the extrusion section of the extrusion groove 3031, so that the extrusion section squeezes the upper end of the rotating seat 305, causing the rotating seat 305 to rotate inside the installation shell 1 and extend out, thereby completing the extension of the rotating seat 305 inside the installation shell 1;

[0051] When the rotating seat 305 needs to be retracted into the interior of the installation shell 1, the extrusion section of the extrusion groove 3031 first squeezes the rotating seat 305 through the reverse movement of the driving seat 303, so that the rotating seat 305 gradually rotates into the interior of the installation shell 1, so that the storage part 2 inside the rotating seat 305 is vertically corresponding to the fixed cover 306. As the rotating seat 305 continues to move, the upper end of the rotating seat 305 enters the interior of the extrusion groove 3031, so that the rotating seat 305 is in a stationary state. At the same time, the rotating seat 305 drives the fixed cover 306 to move toward the upper end of the storage part 2, so that the fixed cover 306 can be connected with the storage part 2, and the fixed cover 306 completes the fixation of the storage part 2 to the fixed cover 306;

[0052] The linkage operation of the rotating seat 305 rotating out and rotating in is achieved through the mutual cooperation between the extrusion groove 3031 inside the driving seat 303 and the limiting groove 3041 inside the limiting seat 304.

[0053] See also Figure 5 and Fig. 9 As shown, the interior of the fixed cover 306 is provided with an air guide groove 3061, and the interior of the air guide groove 3061 is connected to the interior of the negative pressure tank 307 through a pipeline, so that the low air pressure inside the negative pressure tank 307 acts on the fixed cover 306 through the pipeline and the air guide groove 3061. After the fixed cover 306 is docked with the storage part 2, it can not only squeeze the interior of the storage part 2 to open the interior of the storage part 2, but also communicate the interior of the storage part 2 with the interior of the negative pressure tank 307 through the air guide groove 3061, thereby changing the air pressure inside the storage part 2, so that the interior of the storage part 2 is in a low air pressure state;

[0054] A guide tube 3062 is also provided inside the fixed cover 306. The guide tube 3062 is connected to the inside of the blocking part 4, and is connected to the patient's drainage tube through the blocking part 4. The patient's accumulated fluid flows into the inside of the blocking part 4 through the drainage tube, and enters the inside of the guide tube 3062 through the inside of the blocking part 4, and then flows into the inside of the storage part 2 for storage.

[0055] See also Figure 4 As shown, an air pressure monitor is provided at the negative pressure tank 307, which monitors the air pressure state inside the negative pressure tank 307 in real time through the air pressure to ensure that the air pressure inside the negative pressure tank 307 is always in a low pressure state, thereby ensuring the extraction of the patient's internal fluid.

[0056] See also Figure 4 , Figure 5 and Figure 7 As shown, the storage portion 2 is provided with a storage tank 201, a mounting seat 202, a sliding column 203, a connecting frame 204, an elastic reset member 205, a closing plate 206 and a closing ball 207. The upper end of the storage tank 201 cooperates with the interior of the fixed cover 306, the lower end of the storage tank 201 cooperates with the interior of the rotating seat 305, the lower end of the mounting seat 202 is fixedly connected to the inner side of the lower end of the storage tank 201, the sliding column 203 is slidably arranged inside the mounting seat 202, the lower end of the connecting frame 204 is fixedly connected to the lower end of the sliding column 203, the elastic reset member 205 is arranged between the mounting seat 202 and the sliding column 203, the lower end of the closing plate 206 is fixedly connected to the upper end of the connecting frame 204, the closing plate 206 corresponds vertically to the fixed cover 306, the closing ball 207 is arranged inside the mounting seat 202, and the closing ball 207 corresponds vertically to the sliding column 203;

[0057] After the storage tank 201 is installed into the interior of the rotating seat 305, and the upper end of the storage tank 201 is vertically corresponding to the fixed cover 306, after the fixed cover 306 is inserted into the upper end of the storage tank 201, the interior of the fixed cover 306 squeezes the closing plate 206, so that the closing plate 206 squeezes the connecting frame 204 and moves downward, so that the upper end of the storage tank 201 loses the closure of the closing plate 206, and the internal opening of the mounting seat 202 loses the blocking closure of the closing ball 207, thereby realizing the automatic opening of the storage part 2;

[0058] After the storage tank 201 is separated from the fixed cover 306, the elastic reset member 205 elastically recovers itself to squeeze the sliding column 203 to slide inside the mounting seat 202, so that the sliding column 203 drives the connecting frame 204 and the closing plate 206 to move upward until the closing plate 206 closes the opening at the upper end of the storage tank 201. At the same time, the sliding of the sliding column 203 can lift up the closing ball 207 inside the mounting seat 202, so that the closing ball 207 closes the inside of the mounting seat 202 and blocks the connection between the mounting seat 202 and the fixed cover 306, thereby realizing automatic sealing of the inside of the storage tank 201 and preventing the drainage liquid inside the storage tank 201 from leaking;

[0059] When maintaining the storage part 2, it is only necessary to rotate the mounting seat 202 to separate it from the storage tank 201, drain the liquid inside the storage tank 201, and then separate the bolts that fix the connecting frame 204 to the closing plate 206 and the sliding column 203. Then, remove the bolts blocking the sliding column 203, and the sliding column 203 can be pulled out of the interior of the mounting seat 202. At the same time, the closing ball 207 can also be taken out of the interior of the mounting seat 202 without the obstruction of the sliding column 203, completing the complete disassembly of the storage part 2. By completely disassembling the storage part 2, it can be easily cleaned and maintained, so that the storage part 2 can be recycled for many times.

[0060] See also Figure 5 As shown, the interior of the closing ball 207 is configured to be hollow, so that when the liquid inside the mounting seat 202 flows to the closing ball 207, the closing ball 207 floats on the liquid surface to close the interior of the mounting seat 202, thereby preventing the liquid from flowing back through the interior of the mounting seat 202 to the interior of the blocking portion 4 and re-entering the patient's body, thereby ensuring the unidirectional flow of the liquid inside the mounting seat 202.

[0061] See also Figure 5 As shown, the interior of the sliding column 203 is provided with a plurality of guide grooves at the closing ball 207, and the liquid guided inside the blocking portion 4 enters the interior of the mounting seat 202, and the liquid level is not at the closing ball 207. At this time, the liquid can flow into the interior of the guide groove through the gap between the closing ball 207 and the mounting seat 202 and be discharged to the interior of the storage tank 201, through the flow of the liquid inside the mounting seat 202 through the guide groove.

[0062] See also Figure 3 , Figure 4 , Figure 6 and Figure 8 As shown, the blocking part 4 includes a connecting tube 401, a fixing rod 402, an extrusion block 403 and an elastic extrusion piece 404, one end of the connecting tube 401 is connected to the guide tube 3062 inside the fixing cover 306, the fixing rod 402 is fixedly arranged inside the mounting shell 1, the extrusion block 403 is slidably arranged inside the mounting shell 1, and the extrusion block 403 is vertically corresponding to the fixing rod 402, the connecting tube 401 is between the fixing rod 402 and the extrusion block 403, the upper end of the elastic extrusion piece 404 is fixedly connected to the lower end of the extrusion block 403, and the lower end of the elastic extrusion piece 404 is fixedly connected to the upper end of the driving seat 303;

[0063] When the driving seat 303 moves toward the blocking portion 4, the driving seat 303 drives the fixed cover 306 to separate from the storage portion 2, and the driving seat 303 drives the elastic extrusion member 404 and the extrusion block 403 to move, so that the extrusion block 403 moves toward the fixing rod 402, thereby squeezing the connecting tube 401 between the extrusion block 403 and the fixing rod 402, so that the connecting tube 401 is closed due to deformation, and the connection between the drainage tube and the storage portion 2 is blocked by the closure of the connecting tube 401, so as to prevent the air inside the connecting tube 401 from entering the patient's body through the drainage tube and causing damage;

[0064] When the driving seat 303 moves toward the blocking portion 4, the driving seat 303 drives the fixed cover 306 to separate from the storage portion 2, and the driving seat 303 drives the elastic extrusion member 404 and the extrusion block 403 to move, so that the extrusion block 403 moves toward the fixing rod 402, thereby squeezing the connecting tube 401 between the extrusion block 403 and the fixing rod 402, so that the connecting tube 401 is closed due to deformation, and the connection between the drainage tube and the storage portion 2 is blocked by the closure of the connecting tube 401, so as to prevent the air inside the connecting tube 401 from entering the patient's body through the drainage tube and causing damage;

[0065] When the driving seat 303 moves in the direction away from the blocking portion 4, the driving seat 303 drives the fixed cover 306 to move in the direction of the storage portion 2. At this time, the driving seat 303 gradually moves away from the extrusion block 403, so that the elastic pressure of the elastic extrusion member 404 itself gradually decreases until the elastic extrusion member 404 returns to normal. The driving seat 303 drives the elastic extrusion member 404 and the extrusion block 403 away from the connecting tube 401, releasing the closure of the connecting tube 401. The opening of the connecting tube 401 allows the drainage tube to be connected to the storage portion 2.

[0066] See also Figure 3 , Figure 4 , Figure 6 and Figure 8 As shown, the upper end of the extrusion block 403 is configured to be arc-shaped, and the contact area and pressure applied by the extrusion block 403 on the connecting tube 401 can be increased through the upper end of the extrusion block 403, thereby ensuring that the connecting tube 401 can be completely sealed after deformation.

[0067] The working principle of the present invention is as follows: the drainage tube blocking part 4 at the patient's location is connected so that the patient's drainage tube is connected to the storage part 2, and the air pressure inside the negative pressure tank 307 is changed by starting the air pump 308 so that the air pressure inside the negative pressure tank 307 is always lower than the air pressure at the patient's heart and chest, thereby making the air pressure inside the storage part 2 always lower than the air pressure at the patient's pneumothorax, and utilizing the negative pressure inside the storage part 2 to extract the liquid at the patient's heart and chest;

[0068] When the liquid in the storage part 2 is full and needs to be replaced, the drive motor 301 is started to drive the drive screw 302 to rotate. The rotation of the drive screw 302 can drive the drive seat 303 to move vertically inside the mounting shell 1, so that the drive seat 303 can first drive the fixed cover 306 to move upward and separate from the storage part 2, so that the storage part 2 loses the squeezing of the fixed cover 306 and is self-sealed. At the same time, the drive seat 303 can squeeze the blocking part 4, so that the blocking part 4 squeezes and seals the connection between the drainage tube and the storage part 2. As the drive seat 303 continues to move, the drive seat 303 can squeeze the rotating seat 305, so that the rotating seat 305 rotates and drives the storage part 2 to extend out of the mounting shell 1, thereby facilitating the replacement of the storage part 2.

[0069] After the new storage part 2 is installed into the interior of the rotating seat 305, the driving motor 301 drives the driving screw 302 to rotate in the opposite direction, and the reverse rotation of the driving screw 302 drives the driving seat 303 to move in the opposite direction, so that the movement of the driving seat 303 first squeezes the rotating seat 305, so that the rotating seat 305 drives the storage part 2 to rotate into the interior of the installation shell 1, and as the driving seat 303 continues to move, the driving seat 303 drives the fixed cover 306 to insert into the upper end of the storage part 2, so that the fixed cover 306 and the storage part 2 are docked and fixed.

[0070] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A drainage device for cardiothoracic surgery, characterized in that: It comprises a mounting shell (1), wherein a storage portion (2) is arranged inside the mounting shell (1), and the storage portion (2) is used to store the drained liquid; A fixing portion (3) is also provided inside the installation shell (1), and the fixing portion (3) is capable of squeezing and fixing the storage portion (2); A blocking portion (4) is provided at the upper end of the fixing portion (3), and the blocking portion (4) is capable of squeezing and blocking the input end at the fixing portion (3): The fixing part (3) comprises a driving motor (301), a driving screw (302), a driving seat (303), a limiting seat (304), a rotating seat (305), a fixing cover (306), a negative pressure tank (307) and an air pump (308); the driving motor (301) is fixedly connected to the interior of the mounting shell (1); the driving screw (302) is rotatably arranged inside the mounting shell (1); one end of the driving screw (302) is fixedly connected to the output end of the driving motor (301); the driving seat (303) is slidably arranged inside the mounting shell (1); and the interior of the driving seat (303) is threadedly connected to the outer edge of the driving screw (302); The limiting seat (304) is fixedly connected to the mounting shell (1), and the outer side of the limiting seat (304) is slidably connected to the inner side of the driving seat (303); the lower end of the rotating seat (305) is rotatably connected to the inside of the limiting seat (304); the upper end of the rotating seat (305) is slidably connected to the inner side of the lower end of the driving seat (303); the fixed cover (306) is fixedly arranged on the upper end of the driving seat (303); the negative pressure tank (307) is fixedly arranged inside the mounting shell (1); the negative pressure tank (307) is connected to the inside of the fixed cover (306) through a pipeline; and the input end of the air pump (308) is connected to the inside of the negative pressure tank (307).

2. A drainage device for cardiothoracic surgery according to claim 1, characterized in that: An arc-shaped limiting groove (3041) is provided inside the limiting seat (304), and the limiting groove (3041) matches the rotation path of the rotating seat (305).

3. A drainage device for cardiothoracic surgery according to claim 1, characterized in that: The lower end of the driving seat (303) is provided with an extrusion groove (3031), the extrusion groove (3031) cooperates with the limiting groove (3041), and a vertical locking section and an inclined extrusion section are arranged inside the extrusion groove (3031).

4. A cardiothoracic surgery drainage device according to claim 1, characterized in that: The interior of the fixed cover (306) is provided with an air guide groove (3061), the interior of the air guide groove (3061) is connected to the interior of the negative pressure tank (307) via a pipeline, and the interior of the fixed cover (306) is also provided with a flow guide pipe (3062), and the flow guide pipe (3062) is connected to the interior of the blocking portion (4).

5. A cardiothoracic surgery drainage device according to claim 1, characterized in that: The negative pressure tank (307) is provided with an air pressure monitor.

6. A cardiothoracic surgery drainage device according to claim 1, characterized in that: The storage portion (2) is provided with a storage tank (201), a mounting seat (202), a sliding column (203), a connecting frame (204), an elastic reset member (205), a closing plate (206) and a closing ball (207); the upper end of the storage tank (201) is matched with the interior of the fixed cover (306); the lower end of the storage tank (201) is matched with the interior of the rotating seat (305); the lower end of the mounting seat (202) is fixedly connected to the inner side of the lower end of the storage tank (201); the sliding column (203) is slidably arranged Inside the mounting seat (202), the lower end of the connecting frame (204) is fixedly connected to the lower end of the sliding column (203), the elastic reset member (205) is arranged between the mounting seat (202) and the sliding column (203), the lower end of the closing plate (206) is fixedly connected to the upper end of the connecting frame (204), the closing plate (206) corresponds vertically to the fixed cover (306), and the closing ball (207) is arranged inside the mounting seat (202), and the closing ball (207) corresponds vertically to the sliding column (203).

7. A drainage device for cardiothoracic surgery according to claim 6, characterized in that: The interior of the closing ball (207) is configured to be hollow.

8. A drainage device for cardiothoracic surgery according to claim 6, characterized in that: The interior of the mounting seat (202) is provided with a plurality of guide grooves at the closing ball (207).

9. The drainage device for cardiothoracic surgery according to claim 1, characterized in that: The blocking portion (4) comprises a connecting tube (401), a fixing rod (402), an extrusion block (403) and an elastic extrusion piece (404); one end of the connecting tube (401) is connected to the guide tube (3062) inside the fixing cover (306); the fixing rod (402) is fixedly arranged inside the mounting shell (1); the extrusion block (403) is slidably arranged inside the mounting shell (1); the extrusion block (403) and the fixing rod (402) are vertically corresponding to each other; the connecting tube (401) is located between the fixing rod (402) and the extrusion block (403); the upper end of the elastic extrusion piece (404) is fixedly connected to the lower end of the extrusion block (403); and the lower end of the elastic extrusion piece (404) is fixedly connected to the upper end of the driving seat (303).

10. A drainage device for cardiothoracic surgery according to claim 9, characterized in that: The upper end of the extrusion block (403) is configured to be in an arc shape.

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