A human body closed cavity drainage model

Abstract

The present invention discloses a barrel assembly, including a barrel. The bottom of the barrel is a barrel bottom, and an inner cavity is provided inside. An assembly through hole is provided on the barrel bottom, and the assembly through hole is hermetically assembled with a fixed table. A flexible ribbon is fixed on the top surface of the fixed table. The top of the inner cavity is hermetically assembled with an assembly ring of a barrel cover, and a fluid is contained in the inner cavity. The barrel cover is also provided with a first pipe joint, a second pipe joint, and a third pipe joint. The flexible ribbon is made of a soft material. The present invention also discloses a human closed body cavity drainage model applying the above barrel assembly. The structure of the present invention is simple, easy to use, durable and low in cost, and is very suitable for trainees to practice operations. The present invention can dynamically simulate the intestinal peristalsis environment through the floating of the flexible ribbon, so that the whole model has a high reduction effect.

Description

Technical Field

[0001] The present invention relates to a human body drainage model, and particularly to a drainage model for simulating a closed body cavity of a human body. Background Art

[0002] In clinical teaching, drainage teaching is very important. Currently, a human body model similar to a real person is generally used, that is, a model similar to a real person is made, and then drained through a drainage bottle to exercise and teach the operation of trainees.

[0003] However, the model similar to a real person is costly and not strong and durable enough. Moreover, the liquid inside this model is static and cannot truly restore the scene of draining a living person.

[0004] Therefore, the applicant believes that it is necessary to design a drainage model for a human closed body cavity, which has a simple structure, a low cost, is strong and durable, and can more truly restore the closed body cavity drainage scene of a living person. Summary of the Invention

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a barrel body component and a human closed body cavity drainage model applying the barrel body component.

[0006] To achieve the above object, the present invention provides a barrel body component, including a barrel body, the bottom of the barrel body is a barrel bottom, and an inner cavity is provided inside;

[0007] An assembly through hole is provided on the barrel bottom, the assembly through hole is hermetically assembled with a fixed table, and a flexible ribbon is fixed on the top surface of the fixed table;

[0008] The top of the inner cavity is hermetically assembled with an assembly ring of a barrel cover, and a fluid is contained in the inner cavity;

[0009] The barrel cover is further provided with a first pipe joint, a second pipe joint, and a third pipe joint, and the flexible ribbon is made of a soft material.

[0010] As a further improvement of the present invention, a sealing groove is provided on the fixed table, a sealing ring is assembled in the sealing groove, and the sealing ring is made of expanded rubber.

[0011] As a further improvement of the present invention, a matching pressing plate is provided above the fixed table, a spherical through hole is provided on the matching pressing plate, one end of an assembly shaft body of a connecting ball passes through the spherical through hole, and the bottom of the connecting ball is assembled with a spherical groove, and the spherical groove is arranged on the top surface of the fixed table;

[0012] The outer walls of the fixed table and the matching pressing plate are assembled and fixed with the inner wall of a fixed cylinder;

[0013] A limiting ring is provided on the described assembly shaft body. A connecting portion is provided at the bottom of the flexible ribbon. After the assembly shaft body passes through the connecting portion, it is assembled with a locking nut by screw thread to press the connecting portion between the limiting ring and the locking nut.

[0014] The outer wall of the described fixed cylinder is rotatably assembled with the inner hole of the turntable, and the turntable is rotatably assembled with the driving ball.

[0015] As a further improvement of the present invention, the turntable is provided with an upper rotating hole, a lower rotating hole, and a connecting through hole. The upper rotating hole is communicated with the lower rotating hole through the connecting through hole.

[0016] The driving ball includes an upper hemisphere and a lower hemisphere. An assembly column is provided on the lower hemisphere, and a mating assembly hole is provided on the upper hemisphere. After the assembly column passes through the connecting through hole, it is assembled and fixed with the mating assembly hole. The driving ball is made of a magnetic material, and a stirring piece is provided on the turntable.

[0017] As a further improvement of the present invention, the barrel body further includes an outer barrel and an inner barrel. An installation platform is provided on the inner barrel, and a fixing platform matching the installation platform is provided on the outer barrel.

[0018] The structure of the inner barrel is the same as that of the barrel body, and the assembly top of the inner barrel is hermetically assembled with the assembly ring.

[0019] A human closed body cavity drainage model is applied with the above barrel body assembly.

[0020] As a further improvement of the present invention, it further includes a catheter assembly and a base assembly. The base assembly includes a housing. An installation cavity is provided inside the housing. A support ring is installed in the installation cavity. A through groove is provided in the support ring. A driving disk is provided below the through groove. A magnetic steel block is provided at the position corresponding to the driving ball on the driving disk. The driving disk is rotatably assembled with the output shaft.

[0021] The output shaft is arranged on the motor, and the motor can drive the output shaft to rotate. A third gear is also fixed on the output shaft. The third gear is meshed and driven with the second gear. The second gear is meshed and driven with the internal teeth of the fourth gear. The inner wall of the fourth gear is also meshed and driven with the tooth shaft. The tooth shaft is meshed and driven with the teeth provided on the outer wall of the driving disk.

[0022] The second gear is fixed on the second shaft body. The bottom of the tooth shaft and the second shaft body are rotatably assembled with the bottom cover.

[0023] A tightening ring is provided on the bottom cover. The tightening ring tightly assembles the fourth gear between the support ring and the tightening ring.

[0024] The upper and lower end faces of the fourth gear are respectively provided with a first arc groove and a second arc groove. A first mating arc groove is provided at the position corresponding to the first arc groove on the supporting ring; a second mating arc groove is provided at the position corresponding to the second arc groove on the tightening ring. A first ball is assembled between the first arc groove and the first mating arc groove; a second ball is assembled between the second arc groove and the second mating arc groove.

[0025] As a further improvement of the present invention, the drainage tube assembly includes a single - lumen drainage tube, a cigarette - type drainage tube, and a double - lumen drainage tube. The first pipe joint is assembled and communicated with one end of the single - lumen drainage tube;

[0026] The second pipe joint is assembled and communicated with the cigarette - type drainage tube, and the third pipe joint is assembled and communicated with the double - lumen drainage tube;

[0027] A suction cup is provided at one end of the single - lumen drainage tube away from the first pipe joint;

[0028] The cigarette - type drainage tube is filled with a water - absorbing material;

[0029] The double - lumen drainage tube includes a first drainage tube and a second drainage tube. A diversion hole is provided at the connection of the first drainage tube and the second drainage tube. The first drainage tube and the second drainage tube are fixed by an installation column, and the installation column fixes the first drainage tube and the second drainage tube;

[0030] The installation column is hermetically assembled with the third pipe joint.

[0031] As a further improvement of the present invention, at least one third drainage tube is added to the double - lumen drainage tube, and the third drainage tube can also be separated from the second drainage tube.

[0032] As a further improvement of the present invention, installation columns and joint assemblies can be provided on the single - lumen drainage tube, the double - lumen drainage tube, and the cigarette - type drainage tube.

[0033] The installation column is inserted into the first pipe joint and hermetically assembled with it. A fixed joint is also sleeved on the single - lumen drainage tube. A reciprocating groove and a reciprocating through - hole are provided on the fixed joint. A tightening rod is installed in the reciprocating through - hole, and an elastic ring is installed in the reciprocating groove. The elastic ring is assembled and fixed with one end of the tightening rod by a screw, and the other end of the tightening rod is connected and fixed with a snap ring; the elastic ring is made of an elastic material;

[0034] A mating clamping groove is provided at the position corresponding to the snap ring on the first pipe joint, and the mating clamping groove is clamped and tightened with the snap - ring arc surface on the snap ring;

[0035] A retaining ring part is also provided on the fixed joint, and the retaining ring part is tightly assembled with the top surface of the first pipe joint;

[0036] A clearance gap is provided between the elastic ring and the opening end of the reciprocating groove, and the clearance gap is used to provide a clearance space for the elastic ring to open.

[0037] The beneficial effects of the present invention are: the present invention has a simple structure, is easy to use, is durable and has a relatively low cost, and is very suitable for students to practice operation.

[0038] The present invention can dynamically simulate the environment of intestinal peristalsis through the floating of flexible ribbons, so that the entire model has a higher restoration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic structural diagram of a barrel assembly of a specific implementation mode of a human body closed body cavity drainage model of the present invention.

[0040] Figure 2 It is a bottom view of a barrel assembly of a specific implementation mode of a human body closed body cavity drainage model of the present invention.

[0041] Figure 3 It is a top view of a barrel assembly of a specific implementation mode of a human body closed body cavity drainage model of the present invention.

[0042] Figure 4 It is a schematic structural diagram of a barrel assembly of a specific implementation mode of a human body closed body cavity drainage model of the present invention.

[0043] Figure 5 It is a schematic diagram of the internal structure of a barrel assembly of a specific implementation mode of a human closed body cavity drainage model of the present invention.

[0044] Figure 6 It is a schematic structural diagram of a barrel assembly of a specific implementation mode of a human body closed body cavity drainage model of the present invention.

[0045] Figure 7 yes Figure 6 Enlarged view of F1 in the middle.

[0046] Figure 8 It is a schematic structural diagram of a base component of a specific implementation of a human closed body cavity drainage model of the present invention.

[0047] Figure 9 It is a schematic structural diagram of a base component of a specific implementation of a human closed body cavity drainage model of the present invention.

[0048] Figure 10 It is a schematic structural diagram of a base component of a specific implementation of a human closed body cavity drainage model of the present invention.

[0049] Figure 11 It is an assembly structure diagram of a barrel component and a base component of a specific implementation mode of a human body closed body cavity drainage model of the present invention.

[0050] Figure 12 It is another structural schematic diagram of the barrel assembly in a specific embodiment of a human closed body cavity drainage model of the present invention.

[0051] Figure 13 It is another structural schematic diagram of the barrel assembly in a specific embodiment of a human closed body cavity drainage model of the present invention.

[0052] Figure 14 It is a structural schematic diagram of a specific embodiment of a human closed body cavity drainage model of the present invention.

[0053] Figure 15 It is a top view of a specific embodiment of a human closed body cavity drainage model of the present invention.

[0054] Figure 16 It is a structural schematic diagram of a double - lumen drainage tube in a specific embodiment of a human closed body cavity drainage model of the present invention.

[0055] Figure 17 It is a structural schematic diagram of a cigarette - shaped drainage tube in a specific embodiment of a human closed body cavity drainage model of the present invention.

[0056] Figure 18 It is a cross - sectional structural schematic diagram of a cigarette - shaped drainage tube in a specific embodiment of a human closed body cavity drainage model of the present invention.

[0057] Figure 19 It is a structural schematic diagram of a triple - lumen drainage tube in a specific embodiment of a human closed body cavity drainage model of the present invention.

[0058] Figure 20 It is another cross - sectional structural schematic diagram of a triple - lumen drainage tube in a specific embodiment of a human closed body cavity drainage model of the present invention.

[0059] Figure 21 It is an assembly structure diagram of a single - lumen drainage tube and a first pipe joint in a specific embodiment of a human closed body cavity drainage model of the present invention. Specific Embodiment

[0060] The present invention will be further described below in conjunction with the drawings and embodiments:

[0061] Refer to Figures 1 - 21 , a human closed body cavity drainage model, including a barrel assembly, a catheter assembly, and a base assembly;

[0062] Refer to Figures 1 - 7 , the described barrel assembly includes a barrel 100, the bottom of the barrel 100 is a barrel bottom 110, and an inner cavity 101 is provided inside;

[0063] The bottom 110 of the bucket is provided with an assembly through hole 111, and the assembly through hole 111 is hermetically assembled with the fixed platform 400. A flexible ribbon 300 is fixed on the top surface of the fixed platform 400;

[0064] The top of the inner cavity 101 is hermetically assembled with the assembly ring 210 of the bucket cover 200. The inner cavity 101 is filled with a fluid, and the fluid can be water;

[0065] The bucket cover 200 is further provided with a first pipe joint 220, a second pipe joint 230, and a third pipe joint 240. One end of the single - chamber drainage tube A100 is assembled and communicated with the first pipe joint 220;

[0066] The second pipe joint 230 is assembled and communicated with the cigarette drainage tube A200, and the third pipe joint 240 is assembled and communicated with the double - chamber drainage tube A300;

[0067] One end of the single - chamber drainage tube 100 away from the first pipe joint 220 is provided with a suction cup 110. The suction cup 110 is provided with at least 4 drainage holes, and the drainage holes are communicated with the single - chamber drainage tube 110;

[0068] The cigarette drainage tube A200 is filled with a water - absorbing material, and the water - absorbing material can be super - absorbent fiber A210;

[0069] The double - chamber drainage tube A300 includes a first drainage tube A310 and a second drainage tube 320. A diversion hole A301 is provided at the connection of the first drainage tube A310 and the second drainage tube A320. The first drainage tube A310 and the second drainage tube A320 are fixed by an installation column A340, and the installation column A340 fixes the first drainage tube A310 and the second drainage tube A320;

[0070] The installation column A340 is hermetically assembled with the first pipe joint 220.

[0071] The flexible ribbon 300 is made of a soft material, which can be a soft cloth.

[0072] During use, the fluid in the inner cavity 101 will cause the flexible ribbon 300 to float, thus simulating intestinal peristalsis; then the fluid in the inner cavity 101 is drained through the drainage tube assembly (single - chamber drainage tube A100, cigarette drainage tube A200, double - chamber drainage tube A300), thereby realizing the drainage process of simulating the closed body cavity of the human body.

[0073] See Figures 4 - 7, a sealing groove 401 is provided on the fixed table 400, and a sealing ring 700 is assembled in the sealing groove 401. The sealing ring 700 is made of expandable rubber, which can be water-swellable rubber or oil-swellable rubber. When in use, if water is filled in the inner cavity, the sealing ring is made of water-swellable rubber. In this way, once leakage occurs between the fixed table 400 and the assembly through-hole, the water will contact the sealing ring, causing the sealing ring to expand, so as to completely squeeze and seal the gap between the fixed table and the assembly through-hole, thereby preventing leakage.

[0074] A mating pressing plate 410 is provided above the fixed table 400. A spherical through-hole 411 is provided on the mating pressing plate 410. One end of the assembly shaft body 321 of the connecting ball 320 passes through the spherical through-hole 411, and the bottom of the connecting ball 320 is assembled with the spherical groove 402. The spherical groove 402 is arranged on the top surface of the fixed table 400.

[0075] The outer walls of the fixed table 400 and the mating pressing plate 410 are assembled and fixed with the inner wall of the fixed cylinder 600, and can be assembled by screw-threading.

[0076] A limiting ring 311 is provided on the assembly shaft body 321. A connecting portion 301 is provided at the bottom of the flexible ribbon 300. After the assembly shaft body 321 passes through the connecting portion 301, it is assembled with a locking nut 312 by screw-threading to press the connecting portion 301 between the limiting ring 311 and the locking nut 312.

[0077] The outer wall of the fixed cylinder 600 is rotatably assembled with the inner hole of the turntable 500, and the turntable 500 is rotatably assembled with the driving ball 520.

[0078] Further, an upper rotation hole 501, a lower rotation hole 502, and a connecting through-hole 503 are provided on the turntable 500. The upper rotation hole 501 is communicated with the lower rotation hole 502 through the connecting through-hole 503. The turntable is also provided with a stirring piece 510 for stirring the fluid in the inner cavity.

[0079] The driving ball 520 includes an upper hemisphere 524 and a lower hemisphere 521. An assembly column 522 is provided on the lower hemisphere 521. A mating assembly hole 523 is provided on the upper hemisphere 524. After the assembly column 522 passes through the connecting through-hole 503, it is assembled and fixed with the mating assembly hole 523. The driving ball 520 is made of magnetic material.

[0080] The base assembly 900 includes a housing 940. The interior of the housing 940 is an installation cavity 941. A support ring 910 is installed in the installation cavity 941. A through groove 911 is provided in the support ring 910. A driving disk 921 is provided below the through groove 911. A magnetic steel block 9211 is provided at the position of the driving disk 921 corresponding to the driving ball 520.

[0081] The described driving disk 921 is rotatably assembled with the output shaft 931. Preferably, the driving disk 921 and the output shaft 931 are assembled by bearings.

[0082] The output shaft 931 is arranged on the motor 960. The motor 960 can drive the output shaft 931 to rotate. A third gear 923 is also fixed on the output shaft 931. The third gear 923 meshes and drives with the second gear 922. The second gear 922 meshes and drives with the internal teeth of the fourth gear 924. The inner wall of the fourth gear 924 also meshes and drives with the tooth shaft 925. The tooth shaft 925 meshes and drives with the teeth arranged on the outer wall of the driving disk 921. During use, the motor drives the output shaft to rotate. The output shaft drives the second gear 922 to rotate through the third gear 923. The second gear 922 drives the fourth gear 924 to rotate. The fourth gear 924 drives the tooth shaft 925 to rotate. The tooth shaft 925 drives the driving disk 921 to rotate. This process can reduce the rotational speed transmitted from the output shaft to the driving disk, thereby increasing the torque of the driving disk. The magnetic steel block 9211 on the driving disk attracts and tightly holds the driving ball magnetically. When the driving disk rotates, the driving ball also rotates, thereby causing the turntable to rotate, so that the water around the fixed table is disturbed, causing the flexible ribbon to flutter to dynamically simulate the scenario of intestinal peristalsis.

[0083] Of course, an air blowing pipe can also be arranged at the bottom of the flexible ribbon, and the air pump blows air to the bottom of the flexible ribbon to make the flexible ribbon flutter. However, this method will increase the exhaust structure of the inner cavity and affect the operation.

[0084] The second gear is fixed on the second shaft body 932. The tooth shaft 925 and the bottom of the second shaft body 932 are rotatably assembled with the bottom cover 950.

[0085] A tightening ring 951 is arranged on the bottom cover 950. The tightening ring 951 tightly holds the fourth gear 924 and assembles it between the support ring 910 and the tightening ring 951.

[0086] See Figure 11 , further, first arc grooves 9241 and second arc grooves 9242 are respectively arranged on the upper and lower end faces of the fourth gear. A first mating arc groove 912 is arranged at the position corresponding to the first arc groove 9241 on the support ring 910. A second mating arc groove 9511 is arranged at the position corresponding to the second arc groove 9242 on the tightening ring 951. First balls 970 are assembled between the first arc groove and the first mating arc groove 9241.

[0087] A second ball 971 is assembled between the second arc groove and the second mating arc groove. During use, the fourth gear can be clamped between the support ring and the pressing ring 951 by the first ball and the second ball. At the same time, the friction between the fourth gear and the support ring and the pressing ring can be minimized.

[0088] The pressing ring 951 is arranged on the bottom cover body 952.

[0089] See Figures 12 - 13 , further, the barrel 100 can be set as an outer barrel 130 and an inner barrel 120. An installation platform 121 is provided on the inner barrel 120, and a fixing platform 131 matching with the installation platform 121 is provided on the outer barrel 130;

[0090] The structure of the inner barrel is the same as that of the barrel. At this time, the base assembly can be arranged at the bottom of the outer barrel.

[0091] The assembly top 122 of the inner barrel 120 is hermetically assembled with the assembly ring 210.

[0092] See Figure 19 , at least one third drainage tube A330 can be added to the double - cavity drainage tube. During use, the drainage efficiency and the external interface can be improved through the third drainage tube A330.

[0093] See Figure 20 , the third drainage tube A330 can be separated from the second drainage tube A320.

[0094] See Figure 21 , mounting posts A340 and joint assemblies can be arranged on the single - cavity drainage tube, the double - cavity drainage tube, and the cigarette - type drainage tube. Taking the single - cavity drainage tube as an example for description:

[0095] The mounting post A340 is inserted into the first pipe joint 220 and hermetically assembled with it. A fixed joint A400 is also sleeved on the single - cavity drainage tube. The fixed joint A400 is provided with a reciprocating groove A410 and a reciprocating through - hole A420. A pressing rod A600 is installed in the reciprocating through - hole A420, and an elastic ring A500 is installed in the reciprocating groove A410. The elastic ring A500 is assembled and fixed with one end of the pressing rod A600 by a screw A510, and the other end of the pressing rod A600 is connected and fixed with a snap ring A700; The elastic ring A500 is made of an elastic material, such as rubber or silica gel.

[0096] The first pipe joint 220 is provided with a mating card slot 221 corresponding to the snap ring A700. The mating card slot 221 and the snap - ring arc surface A701 on the snap ring A700 are matched and clamped.

[0097] The fixed joint A400 is also provided with a retaining ring portion A430, and the retaining ring portion A430 is tightly assembled with the top surface of the first pipe joint 220.

[0098] When in use, the elastic force of the elastic ring can be used to clamp the clamping ring and the matching slot to fix the mounting column A340. When the mounting column 340 needs to be removed, the fixing joint is first pulled upward to disengage the clamping ring from the matching slot and then the mounting column is removed. During this process, the clamping ring will exert force on the tightening rod A600 to keep the tightening rod away from the matching slot, thereby disengaging the retaining ring from the matching slot.

[0099] Furthermore, a clearance gap A440 is provided between the elastic ring A500 and the opening end of the reciprocating groove A410, and the clearance gap A440 is used to provide a clearance space for the opening of the elastic ring.

[0100] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A human closed body cavity drainage model, characterized in that it includes: A barrel body, the bottom of the barrel body is the barrel bottom, and an inner cavity is provided inside; the characteristics are as follows: An assembly through hole is provided on the barrel bottom, and the assembly through hole is hermetically assembled with a fixed table, and a flexible ribbon is fixed on the top surface of the fixed table; The top of the inner cavity is hermetically assembled with the assembly ring of the barrel cover, and a fluid is contained in the inner cavity; The barrel cover is also provided with a first pipe joint, a second pipe joint, and a third pipe joint, and the flexible ribbon is made of a soft material; A sealing groove is provided on the fixed table, and a sealing ring is assembled in the sealing groove, and the sealing ring is made of expanded rubber; A mating pressure plate is provided above the fixed table, a spherical through hole is provided on the mating pressure plate, one end of the connecting ball provided with an assembly shaft body passes through the spherical through hole, and the bottom of the connecting ball is assembled with a spherical groove, and the spherical groove is arranged on the top surface of the fixed table; The outer walls of the fixed table and the mating pressure plate are assembled and fixed with the inner wall of the fixed cylinder; A limiting ring is provided on the assembly shaft body, a connecting portion is provided at the bottom of the flexible ribbon, and after the assembly shaft body passes through the connecting portion, it is screwed and assembled with a locking nut to press the connecting portion between the limiting ring and the locking nut; The outer wall of the fixed cylinder is rotatably assembled with the inner hole of the turntable, and the turntable is rotatably assembled with the driving ball; The turntable is provided with an upper rotation hole, a lower rotation hole, and a connecting through hole, and the upper rotation hole is communicated with the lower rotation hole through the connecting through hole; The driving ball includes an upper hemisphere and a lower hemisphere. An assembly column is provided on the lower hemisphere, a mating assembly hole is provided on the upper hemisphere, and after the assembly column passes through the connecting through hole, it is assembled and fixed with the mating assembly hole; the driving ball is made of a magnetic material, and stirring blades are provided on the turntable; The barrel body further includes an outer barrel and an inner barrel. An installation table is provided on the inner barrel, and a fixed table matching the installation table is provided on the outer barrel; The structure of the inner barrel is the same as that of the barrel body, and the assembly top of the inner barrel is hermetically assembled with the assembly ring; It also includes a base assembly; the base assembly includes a housing, an installation cavity is provided inside the housing, a support ring is installed in the installation cavity, a through groove is provided in the support ring, a driving disk is provided below the through groove, and a magnetic steel block is provided at the position corresponding to the driving ball on the driving disk; the driving disk is rotatably assembled with an output shaft; The output shaft is arranged on a motor, the motor can drive the output shaft to rotate, a third gear is further fixed on the output shaft, the third gear is meshed and driven with a second gear, the second gear is meshed and driven with the internal teeth of a fourth gear, the inner wall of the fourth gear is also meshed and driven with a tooth shaft, and the tooth shaft is meshed and driven with the teeth arranged on the outer wall of the driving disk; The second gear is fixed on a second shaft body, and the bottom of the tooth shaft and the second shaft body are rotatably assembled with a bottom cover; A tightening ring is provided on the bottom cover, and the tightening ring tightly assembles the fourth gear between the support ring and the tightening ring; The upper and lower end surfaces of the fourth gear are respectively provided with a first arc groove and a second arc groove, the support ring is provided with a first matching arc groove at a position corresponding to the first arc groove; the tightening ring is provided with a second matching arc groove at a position corresponding to the second arc groove, a first ball is mounted between the first arc groove and the first matching arc groove; a second ball is mounted between the second arc groove and the second matching arc groove; It also includes a drainage tube assembly, the drainage tube assembly includes a single-lumen drainage tube, a cigarette drainage tube, and a double-lumen drainage tube, and the first pipe joint is assembled and connected to one end of the single-lumen drainage tube; The second pipe joint is assembled and connected to the cigarette drainage tube, and the third pipe joint is assembled and connected to the double-lumen drainage tube; The single-lumen drainage tube is provided with a suction cup at one end away from the first pipe joint; The cigarette drainage tube is filled with water-absorbing material; The double-lumen drainage tube comprises a first drainage tube and a second drainage tube, wherein a guide hole is provided at the connection between the first drainage tube and the second drainage tube, and the first drainage tube and the second drainage tube pass through a mounting column, and the mounting column fixes the first drainage tube and the second drainage tube; The installation column is sealed and assembled with the third pipe joint; adding at least one third drainage tube to the double-lumen drainage tube; The single-lumen drainage tube, double-lumen drainage tube, and cigarette drainage tube may be provided with mounting posts and joint components. The mounting column is installed in the first pipe joint and sealed therewith, the single-lumen drainage tube is also provided with a fixed joint, the fixed joint is provided with a reciprocating groove and a reciprocating through hole, a tightening rod is installed in the reciprocating through hole, an elastic ring is installed in the reciprocating groove, the elastic ring is assembled and fixed with one end of the tightening rod by a screw, and the other end of the tightening rod is connected and fixed with a clamping ring; the elastic ring is made of elastic material; The first pipe joint is provided with a matching groove at a position corresponding to the clamping ring, and the matching groove is matched and clamped with the clamping ring arc surface on the clamping ring; The fixed joint is also provided with a retaining ring portion, and the retaining ring portion is tightly assembled with the top surface of the first pipe joint; A clearance gap is provided between the elastic ring and the opening end of the reciprocating groove, and the clearance gap is used to provide a clearance space for the elastic ring to open.

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