Anti-blocking drainage tube device with spiral groove

Abstract

The invention relates to the technical field of medical instruments, in particular to an anti-blocking drainage tube device with a spiral groove, which comprises a tube body, a liquid suction port and a control button, the buffer cleaning mechanism comprises a buffer opening, a connecting column, a movable ring and an expansion sleeve; the dredging mechanism comprises a spiral groove, a piston ring and a driving rod, the driving rod and the piston ring move synchronously, and the stroke of the driving rod is increased along with increase of the pressure intensity in the expansion sleeve; the piston ring is driven by the driving rod to move and rotate to clean and block the pipe body, after the pipe body is blocked, the expansion sleeve deforms outwards, so that the moving ring descends, the stroke of the driving rod is increased, the whole pipe body is dredged, the dredging and anti-blocking functions are achieved while buffering and positioning are achieved, and auxiliary flushing and cleaning are achieved through the auxiliary pipe; meanwhile, the device can be used as a standby pipe to assist in removing fester during dredging, one-way communication of multiple media such as gas and liquid is achieved through the sealing ball, sensitivity is higher, and the fester is prevented from being mixed and flowing back or cleaning liquid and gas are prevented from entering an affected part.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to an anti-blocking drainage tube device with a spiral groove. Background Art

[0002] The purpose of surgical drainage is to guide the pus, blood, and fluid accumulated between human tissues or in the body cavity to the outside of the body, which has the functions of preventing postoperative infection and promoting wound healing. There are many types of surgical drainage tubes used clinically, such as urinary catheters, pleural effusion drainage tubes, abdominal effusion drainage tubes, and orthopedic postoperative drainage tubes.

[0003] Pus usually contains a large number of white blood cells, dead cells, bacteria and proteins. These components make the pus highly viscous and easily accumulate inside the drainage tube, causing the drainage tube to be blocked by pus, affecting the drainage effect, increasing the risk of infection, and causing the patient's recovery time to be prolonged. At the same time, the curved and folded parts of the drainage tube are also prone to form blockage points. Poor drainage will cause the accumulated fluid in the surgical site to not be discharged in time, increasing the risk of infection and pain.

[0004] The existing Chinese patent with publication number CN109498958A discloses an anti-blockage drainage tube, the drainage tube includes a main body, the main body includes a first end and a second end, the first end is provided with an inlet tube, and a plurality of spindle-shaped drainage holes are provided near the first end of the main body. The invention can effectively solve the problem of drainage tube blockage when liquid and solid components are drained and transported to other places under negative pressure suction, and can be used for suction of sputum under negative pressure suction, drainage and flushing of gastric cavity decompression, drainage and flushing of abscess cavity and purulent duct, drainage and flushing of various osteomyelitis and arthritis, drainage and flushing of various surgical incisions, etc., all of which have anti-blockage effects.

[0005] However, since the above patent solution cannot directly clean the inner wall of the drainage tube and can only rely on water flow and negative pressure suction, the cleaning effect is poor. At the same time, there is no spare pipeline, and it needs to be replaced when blockage occurs, which is time-consuming and labor-intensive. Summary of the invention

[0006] In view of the above problems in the prior art, the present invention is proposed.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a drainage tube device with spiral grooves to prevent blockage, comprising: a flow guiding mechanism, comprising: a tube body, a liquid suction port provided at one end of the tube body, and a control button provided at the other end of the tube body, wherein there are two control buttons, and the flow guiding mechanism is controlled to suction or spray water by pressing the control button;

[0008] The buffer cleaning mechanism comprises a buffer port extending through the outer wall of the tube body, a connecting column arranged in the buffer port, a moving ring slidably sleeved on the outer wall of the buffer port, and an expansion sleeve sleeved on the outer wall of the buffer port, wherein one end of the expansion sleeve is fixedly connected to the tube body, and the other end is connected to the moving ring and slides synchronously with the moving ring;

[0009] The dredging mechanism includes a spiral groove arranged on the inner wall of the tube body, a piston ring rotatably arranged on the inner wall of the spiral groove, and a driving rod slidably arranged on the inner wall of the tube body. The driving rod moves synchronously with the piston ring, and the stroke of the driving rod increases according to the increase of the pressure in the expansion sleeve.

[0010] As a preferred solution of the anti-blocking drainage pipe device with spiral grooves described in the present invention, the outer wall of the piston ring is provided with a sliding column, the sliding column is slidably arranged in the spiral groove, the inner wall of the piston ring is provided with arc-shaped blades in a circular array, and the end face of the drive rod is fixedly provided with a swivel, and the swivel is rotatably arranged in the piston ring.

[0011] As a preferred solution of the anti-blocking drainage tube device with spiral grooves described in the present invention, a driving column is provided on the outer wall of one end of the driving rod away from the piston ring, a turntable is rotatably provided inside the expansion sleeve, a rotating groove is opened on the turntable, and the driving column is slidably arranged in the rotating groove.

[0012] As a preferred solution of the anti-blocking drainage tube device with spiral grooves described in the present invention, a slider is provided at one end of the turntable, a sliding groove is provided on the sliding sleeve of the outer wall of the slider, an adjusting rod is also penetrated by the end surface of the slider, and the adjusting rod slides through the sliding groove and is connected to the movable ring.

[0013] As a preferred solution of the anti-blocking drainage tube device with spiral grooves described in the present invention, a rotating tube is rotatably penetrated through the outer wall of the expansion sleeve, the rotating tube is fixedly connected to the slide groove, a window is opened on the rotating tube, and the window is also controlled by the control button.

[0014] As a preferred solution of the anti-blocking drainage tube device with spiral grooves described in the present invention, one end of the rotating tube protruding to the outer wall of the expansion sleeve is provided with a power cylinder, and the outer wall of the power cylinder is also connected to an auxiliary pipe, and the auxiliary pipe is also controlled by the control button.

[0015] As a preferred solution of the anti-blocking drainage tube device with spiral grooves described in the present invention, the tube body is provided with a first conical cylinder and a second conical cylinder at both ends close to the expansion sleeve, and sealing balls are provided in the first conical cylinder and the second conical cylinder.

[0016] As a preferred solution of the anti-blocking drainage tube device with spiral grooves described in the present invention, the first conical cylinder and the second conical cylinder are both hollow conical cylinders, and are arranged in a direction where the end with a larger diameter is close to the control button.

[0017] As a preferred solution of the anti-blocking drainage tube device with spiral grooves described in the present invention, the larger end faces of the first conical cylinder and the second conical cylinder are provided with a limiting frame, and a first elastic member is provided between the limiting frame and the sealing ball.

[0018] As a preferred solution of the anti-blocking drainage tube device with spiral grooves described in the present invention, the first elastic member is a spring, and the first elastic member pushes the sealing ball to roll downward along the first conical cylinder and the second conical cylinder and fit against the inner wall.

[0019] The beneficial effects of the present invention are as follows: the piston ring is driven to rotate by the driving rod to clean the tube body and prevent blockage. After the tube body is blocked, the expansion sleeve deforms outward, causing the movable ring to descend and the driving rod stroke to increase, thereby unblocking the entire tube body, achieving buffer positioning while realizing the unblocking and anti-blocking functions. Auxiliary flushing and cleaning are achieved through the auxiliary tube, and it can also be used as a spare tube to assist in clearing pus during unblocking. The sealing ball realizes one-way conduction of multiple media such as gas and liquid, with higher sensitivity, preventing pus mixing and backflow or cleaning liquid gas from entering the affected area. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. 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 creative work. Among them:

[0021] Figure 1 It is an overall schematic diagram of the anti-blocking drainage tube device with spiral grooves in the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the anti-blocking drainage tube device with spiral grooves in the present invention;

[0023] Figure 3 It is a schematic diagram of the piston ring structure in the present invention;

[0024] Figure 4 It is a schematic diagram of the internal structure of the expansion sleeve in the present invention;

[0025] Figure 5 This is a schematic diagram of the interior of the second cone cylinder in the present invention;

[0026] Figure 6 It is a schematic diagram of the internal structure of the tube body in the present invention;

[0027] Figure 7 Based Figure 6 An enlarged schematic diagram of the transfer tube area in FIG.

[0028] Figure 8 The figure is a comparison of the expansion sleeve before and after deformation in the present invention.

[0029] Reference numerals: 1001, first cone cylinder; 1002, second cone cylinder; 1003, sealing ball; 101, tube body; 1004, first elastic member; 1005, limit frame; 102, liquid suction port; 103, control button;

[0030] 200, buffer port; 2001, rotating tube; 2002, window; 2003, power cylinder; 2004, auxiliary tube; 201, connecting column; 202, moving ring; 203, expansion sleeve;

[0031] 300, spiral groove; 3001, sliding column; 3002, arc-shaped blade; 3003, driving column; 3004, rotating disk; 3005, rotating groove; 3006, sliding block; 3007, sliding groove; 3008, adjusting rod; 301, piston ring; 302, driving rod. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] 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 term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0035] Example 1

[0036] Reference Figures 1 to 8, which is the first embodiment of the present invention, provides an anti-blocking drainage tube device with a spiral groove, including a guide mechanism, a buffer cleaning mechanism and a dredging mechanism. The driving rod 302 drives the piston ring 301 to move and rotate to clean the tube body 101 and prevent blockage. After the tube body 101 is blocked, the expansion sleeve 203 deforms outward, causing the moving ring 202 to descend, and the travel of the driving rod 302 increases, thereby dredging the entire tube body 101, realizing buffer positioning while achieving the dredging and anti-blocking functions.

[0037] Specifically, it includes a flow guiding mechanism, including a tube body 101, a liquid suction port 102 provided at one end of the tube body 101, and a control button 103 provided at the other end of the tube body 101. There are two control buttons 103. By pressing the control button 103, the flow guiding mechanism is controlled to suction or spray water.

[0038] The buffer cleaning mechanism includes a buffer port 200 penetrating through the outer wall of the tube body 101, a connecting column 201 arranged in the buffer port 200, a moving ring 202 slidably sleeved on the outer wall of the buffer port 200, and an expansion sleeve 203 sleeved on the outer wall of the buffer port 200, wherein one end of the expansion sleeve 203 is fixedly connected to the tube body 101, and the other end is connected to the moving ring 202 and slides synchronously therewith;

[0039] The dredging mechanism includes a spiral groove 300 arranged on the inner wall of the tube body 101, a piston ring 301 rotatably arranged on the inner wall of the spiral groove 300, and a driving rod 302 slidably arranged on the inner wall of the tube body 101. The driving rod 302 moves synchronously with the piston ring 301, and the stroke of the driving rod 302 increases according to the increase of the pressure in the expansion sleeve 203.

[0040] Preferably, when used in application scenarios such as the trachea and esophagus, in this embodiment, a one-way valve is provided on the inner wall of the tube body 101 located on the left and right of the buffer port 200 to prevent pus from flowing back. When inhaling, the air pressure in the expansion sleeve 203 expands within a normal range, thereby fitting to the inner wall of the tissue for fixation, playing an auxiliary positioning function, and preventing the tube body 101 from shaking and damaging the inner wall tissue of the esophagus.

[0041] Among them, the tube body 101 is made of medical hard plastic and is a hollow circular tube. The liquid suction port 102 is elliptical and opened on the outer wall of the tube body 101 to prevent puncturing the affected tissue. The control button 103 controls the suction and spraying of the cleaning liquid respectively. During the suction process, the pus in the affected area is sucked out and discharged from the other end of the tube body 101. The cleaning liquid is physiological saline.

[0042] Among them, the expansion sleeve 203 is made of highly elastic rubber. When the side of the tube body 101 close to the control button 103 is blocked, pus is absorbed in the expansion sleeve 203. The expansion sleeve 203 has elastic force and is located on the upper side of the buffer port 200 in the initial state. The expansion sleeve 203 deforms and expands radially, and at the same time pulls the movable ring 202 downward.

[0043] Among them, the connecting column 201 is used to connect the tube body 101 at both ends of the buffer port 200 to prevent the tube body 101 from being misplaced. The movable ring 202 is made of hard rubber and is always sealed and connected to the tube body 101 to prevent pus leakage. The lower end surface of the movable ring 202 can also slide along the connecting column 201.

[0044] Preferably, a sliding column 3001 is provided on the outer wall of the piston ring 301, and the sliding column 3001 is slidably arranged in the spiral groove 300. The inner wall of the piston ring 301 is provided with an arc blade 3002 in a circular array. A rotating ring is fixed on the end face of the driving rod 302, and the rotating ring is rotatably arranged in the piston ring 301.

[0045] The rotating ring is coaxially rotated in the piston ring 301 through a bearing, and the rotating ring and the piston ring 301 slide synchronously along the axial direction of the tube body 101, and the rotating ring and the piston ring 301 can rotate relative to each other.

[0046] Preferably, there are three arc-shaped blades 3002 in a circular array, which rotate simultaneously when the driving rod 302 drives the piston ring 301 to move. During the rotation of the three arc-shaped blades 3002, the agglomerated pus impurities can be crushed and sucked out, thereby solving the problem of agglomeration and blockage in the tube body 101.

[0047] More preferably, a driving column 3003 is provided on the outer wall of one end of the driving rod 302 away from the piston ring 301 , a rotating disk 3004 is rotatably provided in the expansion sleeve 203 , a rotating groove 3005 is opened on the rotating disk 3004 , and the driving column 3003 is slidably provided in the rotating groove 3005 .

[0048] Among them, the driving column 3003 is cylindrical, the axis of the turntable 3004 coincides with the axis of the tube body 101, the rotating groove 3005 is a circular groove in this embodiment, and in other embodiments it is changed to an elliptical shape according to the degree of pus blockage, and the driving column 3003 is slidably arranged in the rotating groove 3005 and cannot fall off.

[0049] Among them, a slider 3006 is provided at the other end of the turntable 3004, and a sliding groove 3007 is provided on the sliding sleeve of the outer wall of the slider 3006. An adjusting rod 3008 is also penetrated through the end surface of the slider 3006. The adjusting rod 3008 slides through the sliding groove 3007 and is connected to the moving ring 202.

[0050] Furthermore, the sliding direction of the slider 3006 in the slide groove 3007 is parallel to the axial direction of the tube body 101, and the adjustment rod 3008 is fixedly connected to the slider 3006 and slides through the slide groove 3007. In this embodiment, the slide groove 3007 is driven by a micro motor to rotate as a whole, driving the slider 3006 disposed therein to rotate, and the centrifugal force during the rotation process is not sufficient to cause the slider 3006 and the slide groove 3007 to slide relative to each other.

[0051] In summary, when in use, the control button 103 is pressed to generate negative pressure in the tube body 101 and inhale air, and the wound tissue enters the tube body 101 through the suction port 102 and enters the buffer port 200 through the one-way valve. At this time, the rotating shaft of the micro motor and the center of the circle of the turntable 3004 do not coincide, and there is a deviation of one-fifth of the length of the slide groove 3007 between the two axes. When the slide groove 3007 is started, it rotates and drives the slider 3006 and the turntable 3004 located therein to rotate eccentrically, and the slider 3006 located on the other side of the turntable 3004 rotates eccentrically. The driving column 3003 in the rotating groove 3005 on the side rotates around the rotating groove 3005. Since the turntable 3004 rotates eccentrically at this time, the driving column 3003 rotates around the rotating groove 3005 and shakes up and down in the vertical direction, thereby pushing the piston ring 301 up and down through the rotating ring on the driving rod 302, and the sliding column 3001 slides in the spiral groove 300 to rotate the piston ring 301. The arc-shaped blades 3002 rotate to break up and suck out the blocked pus to prevent blockage.

[0052] When the tube body 101 is blocked, the pus sucked out through the one-way valve accumulates in the tube body 101, causing the expansion sleeve 203 to expand and deform, and the internal pressure increases. During the radial expansion of the expansion sleeve 203, the movable ring 202 is pulled downward, so that the adjustment rod 3008 connected to the movable ring 202 drives the slider 3006 to slide along the slide groove 3007, so that the eccentricity increases by more than one-fifth of the length of the slide groove 3007, so that the up and down movement amplitude of the driving rod 302 increases, and the entire tube body 101 is cleared of slag and blockage. After dredging, the pressure in the expansion sleeve 203 is reduced and it is automatically reset.

[0053] Example 2

[0054] Reference Figures 1 to 8 , which is the second embodiment of the present invention, is based on the previous embodiment, but differs in that auxiliary flushing and cleaning is achieved through the auxiliary tube 2004, which can also be used as a spare tube to assist in clearing pus during dredging.

[0055] Specifically, a rotating tube 2001 is rotatably penetrated through the outer wall of the expansion sleeve 203 , and the rotating tube 2001 is fixedly connected to the slide groove 3007 . A window 2002 is opened on the rotating tube 2001 , and the window 2002 is also controlled by the control button 103 .

[0056] Among them, a power cylinder 2003 is provided at one end of the rotating tube 2001 protruding to the outer wall of the expansion sleeve 203 , and the outer wall of the power cylinder 2003 is also connected to an auxiliary pipe 2004 , and the auxiliary pipe 2004 is also controlled by the control button 103 .

[0057] Among them, an impeller is provided in the power cylinder 2003. When a medium such as cleaning fluid, water, pus, or compressed air flows through the power cylinder 2003, the power cylinder 2003 can drive the rotating tube 2001 to rotate through the rotating joint, and at the same time transmit the medium in the auxiliary tube 2004 to the rotating tube 2001.

[0058] Preferably, the rotating tube 2001 is made of hard plastic and is sealed with the expansion sleeve 203. When the expansion sleeve 203 is pressurized and expanded, the expansion sleeve 203 deforms, expands and slides along the outer wall of the rotating tube 2001, so that the rotating tube 2001 plays a guiding role. At the same time, the moving ring 202 will fall more sensitively, thereby improving the detection accuracy.

[0059] Furthermore, in this embodiment, the window 2002 is a circular through hole and a circular array is arranged on the outer wall of the rotating tube 2001, and each window 2002 is in the process of rotation. The window 2002 is set to be obliquely crossed. When the control button 103 controls the delivery of clean water into the auxiliary pipe 2004, the water is thrown out through each window 2002 during the rotation process to flush various places in the expansion sleeve 203. At the same time, due to the presence of the one-way valve, the water flow will only be sucked away by the tube body 101 to achieve the cleaning function.

[0060] When the tube body 101 is blocked, the control button 103 controls the auxiliary tube 2004 to inhale air, so that the auxiliary tube 2004 forms a spare pipeline to clear the accumulated pus, thereby improving safety and reliability and avoiding the time spent on cleaning and blockage replacement.

[0061] More preferably, after the blockage of the tube body 101 is cleared through the auxiliary tube 2004, compressed gas is introduced into the auxiliary tube 2004, combined with the up and down crushing of the piston ring 301, the suction of the tube body 101 and the blowing of the auxiliary tube 2004, to eliminate the lumps and pus in the tube body 101.

[0062] Example 3

[0063] Reference Figure 1-Figure 8 , which is the third embodiment of the present invention. This embodiment is based on the previous embodiment, but is different in that a sealing ball 1003 is used to achieve one-way conduction of multiple media such as gas and liquid, with higher sensitivity, preventing pus mixing and backflow or cleaning liquid and gas from entering the affected area.

[0064] Specifically, a first cone cylinder 1001 and a second cone cylinder 1002 are provided at two ends of the tube body 101 close to the expansion sleeve 203 , and sealing balls 1003 are provided in both the first cone cylinder 1001 and the second cone cylinder 1002 .

[0065] Among them, the first cone cylinder 1001 and the second cone cylinder 1002 are both hollow cone cylinders, and are arranged in the direction where the end with a larger diameter is close to the control button 103. The first cone cylinder 1001 and the tube body 101 are sealed so that the gas and liquid medium can only pass through the inside of the first cone cylinder 1001 and the second cone cylinder 1002.

[0066] Furthermore, the sealing ball 1003 is made of rubber. When negative pressure is generated in the tube body 101 by the control button 103 for adsorption, the gas and liquid can roll upward when passing through, so that the gas and liquid medium can pass smoothly.

[0067] When blockage occurs and the negative pressure is small, the sealing ball 1003 is reset and fully contacts the inner wall of the tube body 101, thereby forming a seal to prevent pus and other media from flowing back.

[0068] The larger end faces of the first conical cylinder 1001 and the second conical cylinder 1002 are provided with a limiting frame 1005 , and a first elastic member 1004 is provided between the limiting frame 1005 and the sealing ball 1003 .

[0069] Preferably, the first elastic member 1004 is a spring, and the first elastic member 1004 pushes the sealing ball 1003 to roll downward along the first cone cylinder 1001 and the second cone cylinder 1002 and fit against the inner wall, thereby enhancing the sealing effect.

[0070] The sealing ball 1003 can limit the mixture of gas, liquid and pus in one direction, and the limiting frame 1005 is made of plastic and has a certain elasticity.

[0071] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0072] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0073] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An anti-blocking drainage tube device with a spiral groove, characterized in that: The flow guiding mechanism comprises: a tube body (101), a liquid suction port (102) arranged at one end of the tube body (101), and a control button (103) arranged at the other end of the tube body (101), wherein there are two control buttons (103) in total, and the flow guiding mechanism is controlled to suction air or spray water by pressing the control button (103); A buffer cleaning mechanism, comprising a buffer port (200) penetrating and opened on the outer wall of the tube body (101), a connecting column (201) arranged in the buffer port (200), a moving ring (202) slidably sleeved on the outer wall of the buffer port (200), and an expansion sleeve (203) sleeved on the outer wall of the buffer port (200), wherein one end of the expansion sleeve (203) is fixedly connected to the tube body (101), and the other end is connected to the moving ring (202) and slides synchronously therewith; The dredging mechanism comprises a spiral groove (300) arranged on the inner wall of the tube body (101), a piston ring (301) rotatably arranged on the inner wall of the spiral groove (300), and a driving rod (302) slidably arranged on the inner wall of the tube body (101), wherein the driving rod (302) moves synchronously with the piston ring (301), and the stroke of the driving rod (302) increases according to the increase of the pressure in the expansion sleeve (203).

2. The anti-blocking drainage tube device with spiral grooves according to claim 1, characterized in that: The outer wall of the piston ring (301) is provided with a sliding column (3001), and the sliding column (3001) is slidably arranged in the spiral groove (300). The inner wall of the piston ring (301) is provided with arc-shaped blades (3002) in a circular array. The end surface of the driving rod (302) is fixedly provided with a rotating ring, and the rotating ring is rotatably arranged in the piston ring (301).

3. The anti-blocking drainage tube device with spiral grooves according to claim 2, characterized in that: A driving column (3003) is provided on the outer wall of one end of the driving rod (302) away from the piston ring (301), a rotating disk (3004) is rotatably provided in the expansion sleeve (203), a rotating groove (3005) is opened on the rotating disk (3004), and the driving column (3003) is slidably arranged in the rotating groove (3005).

4. The anti-blocking drainage tube device with spiral grooves according to claim 3, characterized in that: A slider (3006) is provided at one end of the turntable (3004), and a sliding groove (3007) is provided on the sliding sleeve of the outer wall of the slider (3006). An adjusting rod (3008) is also penetrated through the end surface of the slider (3006), and the adjusting rod (3008) slides through the sliding groove (3007) and is connected to the moving ring (202).

5. The anti-blocking drainage tube device with spiral grooves according to claim 4, characterized in that: A rotating tube (2001) is rotatably provided through the outer wall of the expansion sleeve (203), and the rotating tube (2001) is fixedly connected to the slide groove (3007). A window (2002) is opened on the rotating tube (2001), and the window (2002) is also controlled by the control button (103).

6. The anti-blocking drainage tube device with spiral grooves according to claim 5, characterized in that: A power cylinder (2003) is provided at one end of the rotating tube (2001) protruding from the outer wall of the expansion sleeve (203). The outer wall of the power cylinder (2003) is also connected to an auxiliary tube (2004), and the auxiliary tube (2004) is also controlled by the control button (103).

7. The anti-blocking drainage tube device with spiral grooves according to claim 6, characterized in that: The tube body (101) is provided with a first cone cylinder (1001) and a second cone cylinder (1002) at both ends close to the expansion sleeve (203), and sealing balls (1003) are provided inside the first cone cylinder (1001) and the second cone cylinder (1002).

8. The anti-blocking drainage tube device with spiral grooves according to claim 7, characterized in that: The first cone cylinder (1001) and the second cone cylinder (1002) are both hollow cone cylinders, and are arranged in a direction where the end with a larger diameter is closer to the control button (103).

9. The anti-blocking drainage tube device with spiral grooves according to claim 8, characterized in that: The larger end faces of the first conical cylinder (1001) and the second conical cylinder (1002) are provided with a limiting frame (1005), and a first elastic member (1004) is provided between the limiting frame (1005) and the sealing ball (1003).

10. The anti-blocking drainage tube device with spiral grooves according to claim 9, characterized in that: The first elastic member (1004) is a spring, and the first elastic member (1004) pushes the sealing ball (1003) to roll downward along the first conical cylinder (1001) and the second conical cylinder (1002) and fit against the inner wall.

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