Switching mechanism and anti-reflux drainage device
By designing the switch mechanism and anti-reflux drainage device on the connecting tube of the drainage bag, the problem of difficulty in controlling the drainage speed and quantity of ICU patients during the initial drainage is solved, and adapting to different types of beds, ensuring the safety of patients and Applicability of the equipment.
Patent Information
- Application Number
- CN202420364779.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-27
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-02-27
AI Technical Summary
When a critically ill patient in ICU is in a first catheter drainage, it is difficult to control the drainage speed and amount, which can easily lead to retentative pulmonary edema and congestion in the abdominal organs. The bed models of different hospitals are different, resulting in the drainage bag being unable to match the suspension.
A switch mechanism is designed, including a drainage bag, a connecting pipe, a clamping unit and a sealing unit. The opening and closing of the connecting pipe is achieved through limiting parts, pushing parts and sliding parts, thereby expanding the storage space of the drainage bag; at the same time, it provides An anti-reflux drainage device is provided, including a suspension unit, which can adapt to different types of hospital beds to ensure that the drainage bag can be hung correctly.
Through the design of the switch mechanism, the workload of nurses is reduced, the patient's life safety is ensured, and complications caused by improper drainage are avoided; the anti-reflux drainage device improves the adaptability and scope of use of the equipment, and is suitable for different models of Hospital bed.
Smart Images
Figure CN222488259U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to a switch mechanism and an anti-reflux drainage device. Background Art
[0002] Critically ill patients in the ICU often have intracavitary effusions, which require catheter drainage. The amount of drainage needs to be controlled during the initial drainage, especially for chest drainage. If too much is drained too quickly, it can easily lead to re-expansion pulmonary edema. However, the drainage rate of the drainage fluid is affected by many factors, such as the location, amount, and nature of the patient's effusion, as well as the patient's body position, activity status and many other factors. The drainage rate and amount are difficult to control, and the workload of ICU nurses is very large. It is impossible for them to pay attention to the drainage bag all the time. Therefore, clinically, it is not uncommon for patients to develop pulmonary edema and congestion of abdominal organs due to failure to control the amount of initial catheter drainage. Moreover, due to the different bed models in different hospitals or wards, the configurations of the drainage bags on the beds of different models are different, making it impossible for unmatched drainage bags to be hung next to the bed for patients to use. Utility Model Content
[0003] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.
[0004] In view of the problem that the amount of initial catheter drainage cannot be well controlled in the above-mentioned or prior art, which may lead to pulmonary edema in patients, the present utility model is proposed.
[0005] Therefore, one of the objects of the present invention is to provide a switch mechanism.
[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a switch mechanism, comprising:
[0007] A drainage bag, and a connecting tube arranged on the drainage bag;
[0008] A clamping unit, comprising a limiting component arranged on the connecting pipe, a pushing component arranged on the limiting component, and a sliding component arranged on the pushing component; and,
[0009] The blocking unit includes an opening and closing component arranged on the sliding component, and a leakage-proof component arranged on the sliding component.
[0010] As a preferred solution of the switch mechanism of the utility model, the limiting component includes a fixing sleeve arranged on the connecting tube, a fixing column symmetrically arranged on the fixing sleeve, a limiting plate connected to the fixing column, a push-pull groove opened on the limiting plate, and a plurality of limiting grooves symmetrically opened on the limiting plate.
[0011] As a preferred solution of the switch mechanism of the utility model, the pushing component includes a pushing block, a connecting column arranged on the pushing block, and a pushing plate arranged on the connecting column.
[0012] As a preferred solution of the switch mechanism of the utility model, the sliding component includes a slide plate arranged on the push plate, a plurality of slide grooves opened on the slide plate, a limit strip arranged in the limit groove, a limit column arranged on the limit strip, and a clamping block arranged on the limit strip.
[0013] As a preferred solution of the switch mechanism of the utility model, wherein: the opening and closing component includes a telescopic groove provided on the connecting pipe, a sealing plate symmetrically arranged in the fixing sleeve, a telescopic hole provided on the fixing sleeve, a connecting strip provided on the sealing plate, and an inclined plate provided on the connecting strip;
[0014] The upper end of the connecting strip is arranged as an inclined surface.
[0015] As a preferred solution of the switch mechanism of the utility model, wherein: the leakage-proof component includes a limiting frame arranged on the fixing sleeve, and a leakage-proof plate arranged on the limiting frame.
[0016] The beneficial effects of the switch mechanism of the utility model: the utility model arranges a blocking unit at the connecting tube between the upper and lower drainage bags, so that when the patient's vital signs are stable and it is necessary to continue to drain the fluid, the connecting tube that was originally in a closed state can be opened by pulling the push block to move the two blocking plates toward the inner cavity of the fixed sleeve, and the body fluid stored in the upper drainage bag can flow from the connecting tube into the lower drainage bag, thereby expanding the space for storing body fluid in the drainage bag, reducing the workload of nurses, and ensuring the patient's life safety.
[0017] In actual use, there is still the problem that the drainage bag cannot be hung due to different bed models.
[0018] In order to solve the above technical problems, the utility model also provides the following technical solutions: an anti-reflux drainage device, comprising the above switch mechanism; and;
[0019] The drainage bag comprises a drainage bag body and a drainage bag mother body, a drainage tube arranged on the drainage bag body, a one-way valve arranged in the drainage tube and the connecting tube, a liquid outlet tube arranged on the drainage bag mother body, and a switch knob arranged on the liquid outlet tube; and,
[0020] The hanging unit comprises a hanging component arranged on the drainage bag body, a lifting component arranged on the hanging component, and a hooking component arranged on the lifting component.
[0021] As a preferred solution of the anti-reflux drainage device of the utility model, the hanging component includes a hanging rope arranged on the drainage bag body, a ring sleeve arranged on the hanging rope, and a support column arranged on the ring sleeve.
[0022] As a preferred solution of the anti-reflux drainage device of the utility model, the lifting component includes a lifting rod arranged on the support column, a lifting groove opened on the lifting rod, a screw arranged in the lifting groove, a torsion block arranged on the screw, and a sliding block sleeved on the screw.
[0023] As a preferred solution of the anti-reflux drainage device of the utility model, wherein: the hooking component includes a fixing seat arranged on the sliding block, and a hook arranged on the fixing seat.
[0024] The beneficial effects of the anti-reflux drainage device of the present invention are as follows: by arranging a hanging unit on the back of the drainage bag body, when the present device is used on a hospital bed with a hook, the hanging rope can be directly hung on the hook; when the present device is used on a hospital bed without a hook but with a hanging rope, the hanging hook can be hung on the hanging rope, and the height of the hanging hook can also be adjusted to meet the height adjustment requirements of the hanging hook, thereby improving the adaptability and application scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:
[0026] Figure 1 It is the overall schematic diagram of the switch mechanism.
[0027] Figure 2 Partial schematic diagram of the switch mechanism.
[0028] Figure 3 It is a partial cross-sectional schematic diagram of the switch mechanism.
[0029] Figure 4 This is an overall schematic diagram of the anti-reflux drainage device.
[0030] Figure 5 This is an overall cross-sectional view of the anti-reflux drainage device.
[0031] Figure 6 Schematic diagram of the suspension unit installed on the drainage bag.
[0032] Figure 7 A cross-sectional schematic diagram of the suspension unit. DETAILED DESCRIPTION
[0033] In order to make the above-mentioned purposes, 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.
[0034] 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.
[0035] 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.
[0036] Example 1
[0037] Reference Figure 1 to Figure 3 , is the first embodiment of the utility model, which provides a switch mechanism that can achieve the effect of opening and closing the drainage tube 102, and includes a drainage bag 100, and a connecting tube 101 arranged on the drainage bag 100; a clamping unit 200, including a limiting component 201 arranged on the connecting tube 101, a pushing component 202 arranged on the limiting component 201, and a sliding component 203 arranged on the pushing component 202; and a blocking unit 300, including an opening and closing component 301 arranged on the sliding component 203, and a leak-proof component 302 arranged on the sliding component 203.
[0038] Among them, the drainage bag 100 is divided into an upper and lower part, which is used to store body fluids drained from the patient's body. The connecting tube 101 is used to connect the upper and lower parts of the drainage bag 100; the limiting component 201 is arranged on the outside of the connecting tube 101, and is used to limit the pushing component 202 when it moves; the pushing component 202 is arranged on the side of the limiting component 201 away from the connecting tube 101, and is used to drive the sliding component 203 to move; the opening and closing component 301 is arranged inside the connecting tube 101, and is used to control the opening and closing of the connecting tube 101; the leak-proof component 302 is arranged on the limiting component 201, and is used to ensure that the connecting tube 101 is always in a closed state to prevent body fluids from leaking outward.
[0039] Specifically, the limiting component 201 includes a fixing sleeve 201a arranged on the connecting tube 101, a fixing column 201b symmetrically arranged on the fixing sleeve 201a, a limiting plate 201c connected to the fixing column 201b, a push-pull groove 201d opened on the limiting plate 201c, and a plurality of limiting grooves 201e symmetrically opened on the limiting plate 201c.
[0040] Among them, the fixed sleeve 201a is arranged on the outer side of the middle part of the connecting pipe 101, there are two fixed columns 201b, which are symmetrically fixedly installed on the lower end surface of the fixed sleeve 201a, the limiting plate 201c is fixedly connected to the two fixed columns 201b at the same time, the push-pull groove 201d is opened in the middle of the upper side of the limiting plate 201c, the limiting groove 201e is divided into two groups, distributed on both sides of the push-pull groove 201d, each group has two, each limiting groove 201e is connected to the push-pull groove 201d, and the depth of the limiting groove 201e is less than the push-pull groove 201d.
[0041] Furthermore, the pushing component 202 includes a pushing block 202a, a connecting column 202b disposed on the pushing block 202a, and a pushing plate 202c disposed on the connecting column 202b.
[0042] Among them, the push block 202a is fixedly connected to the connecting column 202b, one end of the push plate 202c is fixedly connected to the connecting column 202b, and the other end is fixedly connected to the slide plate 203a. A groove that can be engaged with a person's finger is provided on the side of the push block 202a away from the connecting column 202b, which is convenient for a person to press and push the push block 202a. The width of the push plate 202c and the push-pull groove 201d are equal.
[0043] Furthermore, the sliding component 203 includes a slide plate 203a arranged on the push plate 202c, a plurality of slide grooves 203b opened on the slide plate 203a, a limit bar 203c arranged in the limit groove 201e, a limit column 203d arranged on the limit bar 203c, and a clamping block 203e arranged on the limit bar 203c.
[0044] Among them, the slide plate 203a is slidably installed in the push-pull groove 201d of the limit plate 201c, there are two slide grooves 203b, the slide grooves 203b are V-shaped, both ends and the top of the slide groove 203b are connected to the outside world, there are four limit bars 203c, which are slidably installed in the corresponding limit grooves 201e, and the limit column 203d is rotatably installed on the corresponding limit bar 203c. At the same time, the limit column 203d can roll in the limit groove 201e, and the two adjacent limit bars 203c are fixedly connected to the corresponding clamping block 203e on the same side. When the limit bar 203c moves, it can drive the clamping block 203e to move synchronously.
[0045] During use, when it is necessary to close the connecting tube 101, the medical staff presses the push block 202a by hand, and the push block 202a drives the connecting column 202b to move in the direction close to the connecting tube 101, and the connecting column 202b drives the push plate 202c to move synchronously, and the push plate 202c drives the slide plate 203a to move synchronously, and the slide plate 203a drives the limiting columns 203d on both sides to roll in the slide groove 203b along the side walls of the slide groove 203b through the slide groove 203b, and the limiting columns 203d move toward the center position of the slide groove 203b when rolling, and the limiting columns 203d synchronously drive the limiting bar 203c to move when moving, and the limiting bar 203c moves toward the limiting groove 201e in the direction close to the slide plate 203a, and the limiting bar 203c drives the clamping block 203e to move synchronously, and the clamping block 203e drives the opening and closing component 301 installed inside the connecting tube 101 to move, thereby closing the connecting tube 101.
[0046] In summary, by setting the clamping unit 200 on the outside of the connecting tube 101, when the connecting tube 101 needs to be closed, the medical staff can press the push block 202a by hand to drive the clamping block 203e to move closer to each other through the slide groove 203b and the limit column 203d. The clamping block 203e drives the opening and closing component 301 installed inside the connecting tube 101 to realize the opening and closing of the connecting tube 101, thereby ensuring the normal use of the drainage bag 100.
[0047] Example 2
[0048] Reference Figure 1 to Figure 3 , which is the second embodiment of the utility model. Different from the previous embodiment, this embodiment provides an opening and closing component 301 of a switch mechanism, which solves the problem of draining the drainage bag 100. The opening and closing component 301 includes a telescopic groove 301a provided on the connecting tube 101, a sealing plate 301b symmetrically arranged in the fixing sleeve 201a, a telescopic hole 301c provided on the fixing sleeve 201a, a connecting strip 301d provided on the sealing plate 301b, and an inclined plate 301e provided on the connecting strip 301d; the upper end of the connecting strip 301d is arranged as an inclined surface.
[0049] Among them, the telescopic groove 301a is opened in the middle part of the connecting pipe 101, and the telescopic groove 301a is connected with the fixed sleeve 201a. The telescopic groove 301a and the cavity in the fixed sleeve 201a can be combined into a rectangular groove, which is used for the telescopic movement of the sealing plate 301b and the connecting strip 301d. There are two sealing plates 301b, which are symmetrically slidably installed in the fixed sleeve 201a and the telescopic groove 301a. The telescopic hole 301c is opened in the middle part of one side of the fixed sleeve 201a close to the limit plate 201c. One end of the telescopic hole 301c is connected with the telescopic groove 301a, and the other end is connected with the outside world. There are two connecting strips 301d, which are fixedly connected with the corresponding sealing plate 301b. The inclined plate 301e is fixedly connected with the corresponding connecting strip 301d. The inclined surface on the inclined plate 301e can drive the leakage-proof plate 302b to move up and down when moving.
[0050] Specifically, the leakage-proof component 302 includes a limiting frame 302a disposed on the fixing sleeve 201a, and a leakage-proof plate 302b disposed on the limiting frame 302a.
[0051] Among them, there are two limit frames 302a, which are symmetrically fixed on the upper end of the fixed sleeve 201a. The limit frames 302a are U-shaped as a whole. The gap formed at the bending part can accommodate the extension of the leakage-proof plate 302b, and can limit the leakage-proof plate 302b when it moves up and down. The leakage-proof plate 302b is an inverted trapezoid. When moving, the leakage-proof plate 302b can always block the telescopic hole 301c to prevent the body fluid in the connecting tube 101 from flowing out.
[0052] During use, when the patient's vital signs are stable and it is necessary to continue to drain the fluid, the body fluid stored in the upper drainage bag 100 needs to be drained into the lower drainage bag 100. The medical staff pinches the push block 202a with their hands and pulls it in the direction away from the connecting tube 101. The push block 202a drives the connecting column 202b to move synchronously. The connecting column 202b drives the push plate 202c to move synchronously. The push plate 202c drives the slide plate 203a to move synchronously. The slide plate 203a drives the four limiting columns 203d to roll in the corresponding slide grooves 203b through the slide grooves 203b and move toward the two ends of the slide grooves 203b. The limiting columns 203d drive the corresponding limiting bars 203c to move synchronously to the limiting grooves 20 1e moves away from the side of the push-pull groove 201d, the limiting strip 203c drives the corresponding clamping block 203e to move synchronously, the clamping block 203e drives the corresponding inclined plate 301e to move synchronously, the inclined plate 301e drives the corresponding connecting strip 301d to move synchronously, the connecting strip 301d drives the corresponding blocking plate 301b to move synchronously, the blocking plate 301b moves into the cavity of the fixing sleeve 201a, and finally contacts with the inner walls on both sides of the fixing sleeve 201a, the blocking plate 301b no longer blocks the connecting tube 101, the connecting tube 101 is in an open state, and the body fluid in the upper drainage bag 100 can flow from the connecting tube 101 into the lower drainage bag 100, completing the continued discharge of the patient;
[0053] When the two inclined plates 301e are driven by the clamping block 203e to move in the two sides, the leakage-proof plate 302b in contact with the inclined plate 301e is no longer squeezed by the inclined plate 301e, and moves toward the direction close to the limiting plate 201c under the influence of gravity. The leakage-proof plate 302b moves downward from the U-shaped gap of the limiting frame 302a. The leakage-proof plate 302b is always in close contact with the outer wall of the fixed sleeve 201a when moving, and the coverage area of the leakage-proof plate 302b is always larger than the area of the telescopic hole 301c. The leakage-proof plate 302b and the inclined plate 301e can always block the telescopic hole 301c in cooperation with each other, thereby preventing the body fluid flowing to the connecting pipe 101 from flowing out of the telescopic hole 301c.
[0054] In summary, by setting a sealing unit 300 at the connecting tube 101 between the upper and lower drainage bags 100, when the patient's vital signs are stable and the drainage needs to continue, it is only necessary to pull the push block 202a to move the two sealing plates 301b toward the inner cavity of the fixed sleeve 201a, so that the connecting tube 101 that was originally in a closed state can be opened, and the body fluid stored in the upper drainage bag 100 can flow from the connecting tube 101 into the lower drainage bag 100, thereby expanding the space for storing body fluid in the drainage bag 100, reducing the workload of nurses, and ensuring the patient's life safety.
[0055] Example 3
[0056] Reference Figures 4 to 7, which is the third embodiment of the utility model. Different from the previous embodiment, this embodiment provides an anti-reflux drainage device, which solves the problem that the drainage bag 100 cannot be hung on beds of different models, and includes the above-mentioned switch mechanism; and, the drainage bag 100 includes a drainage bag body 100a and a drainage bag mother body 100b, a drainage tube 102 arranged on the drainage bag body 100a, a one-way valve 103 arranged in the drainage tube 102 and the connecting tube 101, a liquid outlet tube 104 arranged on the drainage bag mother body 100b, and a switch knob 105 arranged on the liquid outlet tube 104; and, a hanging unit 400, including a hanging component 401 arranged on the drainage bag body 100a, a lifting component 402 arranged on the hanging component 401, and a hooking component 403 arranged on the lifting component 402.
[0057] Among them, the drainage bag body 100a is located at the upper part of the connecting tube 101, the drainage bag mother body 100b is located at the lower part of the connecting tube 101, and the two are connected through the connecting tube 101. The drainage tube 102 is fixedly installed at the upper end of the drainage bag body 100a, and the liquid outlet tube 104 is fixedly installed at the lower end of the drainage bag mother body 100b. The lower parts of the drainage bag body 100a and the drainage bag mother body 100b are both arranged in an inverted triangle shape, which can play a role in rapid liquid discharge. The drainage tube 102 is connected to the drainage bag body 100a, and can drain the body fluid in the patient's body into the drainage bag body 100a. Two one-way valves 103 are fixedly installed on the corresponding drainage tubes 102 and the connecting tube 101 To prevent the body fluid stored in the drainage bag body 100a and the drainage bag mother body 100b from flowing back, the knob switch is installed on the liquid outlet tube 104, which can control the opening and closing of the liquid outlet tube 104. The drainage bag body 100a and the drainage bag mother body 100b are both provided with scale lines; the hanging component 401 is arranged above the side of the drainage bag body 100a away from the scale lines, and is used to hang the drainage bag 100 on the hook 403b beside the bed; the lifting component 402 is arranged above the middle part of the hanging component 401, and is used to control the height of the hooking component 403; the hooking component 403 is arranged on one side of the lifting component 402, and is used when it is on a bed without a hook 403b with a hanging rope.
[0058] Specifically, the hanging component 401 includes a hanging rope 401a arranged on the drainage bag body 100a, a ring 401b arranged on the hanging rope 401a, and a supporting column 401c arranged on the ring 401b.
[0059] Among them, both ends of the hanging rope 401a are fixedly installed on the outer wall of the drainage bag body 100a, the ring sleeve 401b is rotatably installed in the middle of the hanging rope 401a, and the support column 401c is fixedly installed in the middle of the side wall of the ring sleeve 401b. The hanging rope 401a can be adapted for use on a hospital bed with a hook 403b.
[0060] Furthermore, the lifting component 402 includes a lifting rod 402a arranged on the support column 401c, a lifting slot 402b opened on the lifting rod 402a, a screw 402c arranged in the lifting slot 402b, a torsion block 402d arranged on the screw 402c, and a slider 402e sleeved on the screw 402c.
[0061] Among them, the lifting rod 402a is rotatably installed on the support column 401c, the lifting groove 402b is opened on the side of the support column 401c away from the drainage bag body 100a, the lifting groove 402b is convex, the screw 402c is rotatably installed in the middle of the lifting groove 402b, the torsion block 402d is fixedly installed on the upper end of the screw 402c, and the slider 402e is slidably installed in the lifting groove 402b, and is rotatably installed on the screw 402c.
[0062] Furthermore, the hooking component 403 includes a fixing seat 403a disposed on the slider 402e, and a hanging hook 403b disposed on the fixing seat 403a.
[0063] The fixing seat 403a is fixedly mounted on the slider 402e, and a groove for the suspension hook 403b to rotate is provided on the fixing seat 403a, and the suspension hook 403b is rotatably mounted on the fixing seat 403a.
[0064] During use, when it is necessary to hang the drainage bag 100 on the side of a hospital bed to drain the patient, the hanging rope 401a can be directly hung on the hook 403b on a hospital bed with a hook 403b. When used on a hospital bed without a hook 403b, first rotate the torsion block 402d, and the torsion block 402d drives the screw 402c to rotate synchronously. The screw 402c drives the slider 402e to move in the lifting groove 402b provided on the lifting rod 402a, and the slider 402e drives the fixed seat 403a to move synchronously. The fixed seat 403a drives the hanging hook 403b to move synchronously. After the height of the hanging hook 403b is adjusted appropriately, the hanging hook 403b is hung on a hospital bed without a hook 403b but with a hanging rope or a concave hole for use. At the same time, the lifting rod 402a can also rotate on the support column 401c, so that the hanging hook 403b can be adjusted in angle.
[0065] In summary, by setting a hanging unit 400 on the back of the drainage bag body 100a, when the present device is used on a hospital bed with a hook 403b, the hanging rope 401a can be directly hung on the hook 403b. When the present device is used on a hospital bed without a hook 403b but with a hanging rope, the hanging hook 403b can be hung on the hanging rope. At the same time, the height of the hanging hook 403b can also be adjusted to meet the height adjustment requirements of the hanging hook 403b, thereby improving the adaptability and scope of application of the present utility model.
[0066] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A switch mechanism, characterized in that: include, A drainage bag (100), and a connecting tube (101) arranged on the drainage bag (100); The clamping unit (200) comprises a limiting component (201) arranged on the connecting pipe (101), a pushing component (202) arranged on the limiting component (201), and a sliding component (203) arranged on the pushing component (202); and, The blocking unit (300) comprises an opening and closing component (301) arranged on the sliding component (203), and a leakage-proof component (302) arranged on the sliding component (203).
2. The switch mechanism according to claim 1, characterized in that: The limiting component (201) comprises a fixing sleeve (201a) arranged on the connecting pipe (101), a fixing column (201b) symmetrically arranged on the fixing sleeve (201a), a limiting plate (201c) connected to the fixing column (201b), a push-pull groove (201d) provided on the limiting plate (201c), and a plurality of limiting grooves (201e) symmetrically provided on the limiting plate (201c).
3. The switch mechanism according to claim 2, characterized in that: The pushing component (202) comprises a pushing block (202a), a connecting column (202b) arranged on the pushing block (202a), and a pushing plate (202c) arranged on the connecting column (202b).
4. The switch mechanism according to claim 3, characterized in that: The sliding component (203) comprises a slide plate (203a) arranged on the push plate (202c), a plurality of slide grooves (203b) provided on the slide plate (203a), a limit strip (203c) arranged in the limit groove (201e), a limit column (203d) arranged on the limit strip (203c), and a clamping block (203e) arranged on the limit strip (203c).
5. The switch mechanism according to claim 2 or 4, characterized in that: The opening and closing component (301) comprises a telescopic groove (301a) provided on the connecting pipe (101), a sealing plate (301b) symmetrically arranged in the fixing sleeve (201a), a telescopic hole (301c) provided on the fixing sleeve (201a), a connecting strip (301d) provided on the sealing plate (301b), and an inclined plate (301e) provided on the connecting strip (301d); The upper end of the connecting strip (301d) is arranged as an inclined surface.
6. The switch mechanism according to claim 5, characterized in that: The leakage-proof component (302) comprises a limiting frame (302a) arranged on the fixing sleeve (201a), and a leakage-proof plate (302b) arranged on the limiting frame (302a).
7. An anti-reflux drainage device, characterized in that: A switch mechanism comprising any one of claims 1 to 6; and; The drainage bag (100) comprises a drainage bag body (100a) and a drainage bag mother body (100b), a drainage tube (102) arranged on the drainage bag body (100a), a one-way valve (103) arranged in the drainage tube (102) and the connecting tube (101), a liquid outlet tube (104) arranged on the drainage bag mother body (100b), and a switch knob (105) arranged on the liquid outlet tube (104); and, The hanging unit (400) comprises a hanging component (401) arranged on the drainage bag body (100a), a lifting component (402) arranged on the hanging component (401), and a hooking component (403) arranged on the lifting component (402).
8. The anti-reflux drainage device according to claim 7, characterized in that: The hanging component (401) comprises a hanging rope (401a) arranged on the drainage bag body (100a), a ring (401b) arranged on the hanging rope (401a), and a supporting column (401c) arranged on the ring (401b).
9. The anti-reflux drainage device according to claim 8, characterized in that: The lifting component (402) includes a lifting rod (402a) arranged on the support column (401c), a lifting groove (402b) opened on the lifting rod (402a), a screw rod (402c) arranged in the lifting groove (402b), a torsion block (402d) arranged on the screw rod (402c), and a sliding block (402e) sleeved on the screw rod (402c).
10. The anti-reflux drainage device according to claim 9, characterized in that: The hooking component (403) comprises a fixing seat (403a) arranged on the sliding block (402e), and a hook (403b) arranged on the fixing seat (403a).