Anti-loosening drainage bag

Abstract

The utility model discloses an anti-loosening drainage bag, and relates to the technical field of drainage bags. The anti-loosening drainage bag comprises a drainage bag body, a liquid outlet pipe, a protective sleeve and a pulling cover, the liquid outlet pipe is arranged at the end part of the drainage bag body; the protective sleeve is arranged on the side, away from the drainage bag body, of the liquid outlet pipe in a sleeving mode, and a cavity is formed in the protective sleeve. One end of the pulling cover is inserted into the cavity and connected with the liquid outlet pipe, the other end of the pulling cover extends out of the cavity, and the pulling cover is used for opening and closing a liquid outlet of the liquid outlet pipe. The liquid outlet of the liquid outlet pipe is opened and closed by adopting the traditional plug-pull type pull cover, so that the production and manufacturing process is simple, the production efficiency is high, the cost is low, and the use is convenient. The protective sleeve is arranged at the joint of the pulling cover and the liquid outlet pipe and serves as an additional barrier, and the situations that the pulling cover is loosened and liquid in the drainage bag body leaks due to the fact that an external object scratches or hooks the joint of the pulling cover and the liquid outlet pipe can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage bags, in particular to an anti-loosening drainage bag. Background Art

[0002] At present, drainage bags are a common medical device, mainly used to collect urine from patients with urinary incontinence, patients in a coma after surgery and people with limited mobility, or used in conjunction with other devices to collect wound drainage fluid.

[0003] Drainage bags are used for clinical surgical drainage. They can guide pus, blood, and liquid accumulated between human tissues or in body cavities to the outside of the body to prevent postoperative infection and promote wound healing. There are many types of surgical drainage bags used clinically, some are used for urinary catheterization, some are used for wounds, and they are used in the chest cavity, brain cavity, gastrointestinal tract, bile duct, etc. The purpose of surgical drainage is to guide pus, blood, and liquid accumulated between human tissues or in body cavities to the outside of the body to prevent postoperative infection and affect wound healing.

[0004] The drainage bag is generally composed of a protective cap (including a connector), a drainage catheter, a film bag body, a check valve, and a drain valve, and is made of medical polymer materials. For example, Chinese patent application number 202320034743.5 discloses an anti-pollution drainage bag, and its specification states that a drain valve is clamped on the liquid outlet tube.

[0005] However, to prevent infection, drainage bags are usually disposable items, and drainage bags are equipped with a discharge valve component at the outlet pipe to prevent leakage of the liquid in the drainage bag. However, the valve structure production and manufacturing process are complex, with low production efficiency, high cost, inconvenience in use, and low popularity. Most hospitals are still using traditional plug-in drainage bags with lower production costs, and the plug-in plug-in head does not have a structure to prevent loosening. During use, it is easy for the plug-in head to fall off due to scratches or hooking of external objects by the patient's activities, causing the liquid in the drainage bag to leak.

[0006] Therefore, the prior art still needs to be improved and developed. Utility Model Content

[0007] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a drainage bag that prevents loosening, aiming to solve the problem that the plug-in head of a traditional plug-in drainage bag does not have an anti-loosening structure, and the plug-in head is easily fallen off due to scratches or hooking of external objects by the patient's activities during use, thereby causing liquid leakage in the drainage bag.

[0008] The technical solution of the utility model is as follows:

[0009] A drainage bag that prevents loosening, wherein the drainage bag comprises a drainage bag body, a liquid outlet tube, a protective sleeve and a pull-out cover; the liquid outlet tube is arranged at the end of the drainage bag body; the protective sleeve is arranged on the side of the liquid outlet tube away from the drainage bag body, and a cavity is formed in the protective sleeve; one end of the pull-out cover is inserted into the cavity and connected to the liquid outlet tube, and the other end extends outside the cavity, and the pull-out cover is used to open and close the liquid outlet of the liquid outlet tube.

[0010] The anti-loosening drainage bag, wherein the pull-out cover includes a clamping protrusion arranged on one side close to the drainage bag body, and the protective sleeve is used to cover the clamping protrusion.

[0011] The anti-loosening drainage bag, wherein the side of the protective cover facing away from the drainage bag body is provided with an abutment portion and an escape portion, the pull-out cover can be rotatably arranged in the protective cover, and the cross-sectional shape of the escape portion is adapted to the cross-sectional shape of the snap-fit ​​protrusion.

[0012] The anti-loosening drainage bag, wherein the side of the protective cover facing away from the drainage bag body is provided with an abutment portion and an escape portion, the pull-out cover is rotatably arranged at the end of the liquid outlet tube, and the cross-sectional shape of the escape portion is adapted to the cross-sectional shape of the clamping protrusion.

[0013] The anti-loosening drainage bag, wherein the pull-out cover comprises a gripping portion for holding, and the gripping portion is arranged on a side of the pull-out cover away from the drainage bag body and extends outside the protective sleeve.

[0014] The anti-loosening drainage bag, wherein the gripping portion is provided with a plurality of anti-slip grooves along the circumferential direction.

[0015] The anti-loosening drainage bag, wherein the upper end of the drainage bag body is provided with a liquid inlet, and the lower end is provided with a sealing port, and the end of the liquid outlet tube is inserted into the sealing port.

[0016] The anti-loosening drainage bag, wherein the inner bottom surface of the drainage bag body is provided with an inclined surface inclined in a direction toward the sealing opening.

[0017] The anti-loosening drainage bag, wherein a supporting edge is extended from the periphery of the drainage bag body.

[0018] The anti-loosening drainage bag, wherein the drainage bag body is marked with scale.

[0019] Compared with the prior art, the embodiment of the utility model has the following advantages:

[0020] The anti-loose drainage bag disclosed in the present application adopts a traditional plug-in type pull-out cover to open and close the liquid outlet of the liquid outlet tube, and has a simple production and manufacturing process, high production efficiency, low cost, and convenient use. The pull-out cover is inserted into the cavity of the protective cover and connected to the liquid outlet tube, that is, a protective cover is set at the connection between the pull-out cover and the liquid outlet tube. The protective cover serves as an additional barrier. During the patient's activities, it can effectively prevent the pull-out cover from being loosened due to scratches or hooks on the connection between the pull-out cover and the liquid outlet tube, thereby ensuring the stability of the pull-out cover and reducing the situation where the pull-out cover is separated from the liquid outlet tube and the liquid in the drainage bag body leaks.

[0021] In actual use, when medical staff need to pull out the pull-out cover, they mainly pull it out by holding the end of the pull-out cover, and the outer surface of the part that can be held is smooth and has no protrusions, which can prevent the pull-out cover from being pulled away when scratched. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is an assembly diagram of the anti-loosening drainage bag in the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the liquid outlet pipe, the pull-out cover and the protective sleeve in the utility model;

[0025] Figure 3 for Figure 2 The cross-sectional view along the AA` direction;

[0026] Figure 4 It is a schematic structural diagram of the liquid outlet pipe, the cover and the protective sleeve in another state of the utility model;

[0027] Figure 5 It is an exploded view of the structure of the liquid outlet pipe, the pull-out cover and the protective sleeve in the utility model.

[0028] Among them, 10, drainage bag body; 11, sealing mouth; 12, inclined surface; 13, supporting edge; 20, liquid outlet tube; 30, pull-out cover; 31, snap-on protrusion; 32, elastic member; 33, gripping part; 331, anti-slip groove; 40, protective cover; 41, abutting part; 42, avoidance part; 43, horizontal partition. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the utility model, the following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Due to the complex production and manufacturing process of the valve structure, low production efficiency, high cost, inconvenience in use and low popularity, most hospitals are still using traditional plug-in drainage bags, and the plug-in plug-in head does not have a structure to prevent loosening. The diameter of the plug-in head must be larger than the diameter of the outlet tube to be mounted on the outlet tube. Due to the inconsistent diameters, the connection between the plug-in head and the outlet tube is stepped. During use, the plug-in head is easily scratched by the patient's activities, causing the plug-in head to fall off and the liquid in the drainage bag to leak.

[0031] See also Figure 1 and Figure 5 In one embodiment of the utility model application, a drainage bag with an anti-loosening function is disclosed, wherein the anti-loosening drainage bag comprises a drainage bag body 10, a liquid outlet tube 20, a protective cover 40 and a pull-out cover 30; the liquid outlet tube 20 is arranged at the end of the drainage bag body 10; the protective cover 40 is sleeved on the side of the liquid outlet tube 20 away from the drainage bag body 10, and a cavity is formed in the protective cover 40; one end of the pull-out cover 30 is inserted into the cavity and connected to the liquid outlet tube 20, and the other end extends outside the cavity, and the pull-out cover 30 is used to open and close the liquid outlet of the liquid outlet tube 20.

[0032] The anti-loose drainage bag disclosed in this embodiment uses a conventional plug-in type pull-out cover 30 to open and close the liquid outlet of the liquid outlet tube 20, and the outer diameter of the pull-out cover 30 is greater than the outer diameter of the liquid outlet tube 20. The pull-out cover 30 is sleeved on the liquid outlet tube 20, and has good sealing performance, which can prevent the liquid in the liquid outlet tube 20 from leaking. The production and manufacturing process of the pull-out cover 30 and the protective cover 40 is simple, with high production efficiency, low cost, and convenient use.

[0033] The pull cap 30 extends into the cavity of the protective cover 40 and is connected to the liquid outlet tube 20, that is, the protective cover 40 is provided at the connection between the pull cap 30 and the liquid outlet tube 20. The protective cover 40 serves as an additional barrier. During the patient's activities, the pull cap 30 can be effectively prevented from being loosened due to scratches or hooks of external objects at the connection between the pull cap 30 and the liquid outlet tube 20, thereby ensuring the stability of the pull cap 30 and reducing the situation in which the pull cap 30 is separated from the liquid outlet tube 20 and the liquid in the drainage bag body 10 leaks.

[0034] In actual use, when medical staff need to pull out the pull cover 30, they mainly pull it out by holding the end of the pull cover 30, and the outer surface of the holdable part is smooth and has no protrusions, which can avoid the pull cover 30 being pulled away when scratched.

[0035] Specifically, one end of the liquid outlet tube 20 disclosed in this embodiment extends from bottom to top through the lower end of the drainage bag body 10 into the drainage bag body 10, and the other end extends outside the drainage bag body 10. The protective cover 40 and the pull-out cover 30 are both arranged on the side of the liquid outlet tube 20 away from the drainage bag body 10, so as to facilitate the medical staff to operate the drainage work.

[0036] Specifically, the protective cover 40 disclosed in this embodiment is bonded and sealed to the drainage bag body 10, so that the protective cover 40 is tightly connected to the drainage bag body 10 and is not easy to come loose.

[0037] Compared with the valve structure in the prior art, the production and manufacturing process of this embodiment is simple and the cost is lower; compared with the threaded connection method in the prior art, the production and assembly are faster and there is no need to screw the pull cap 30 multiple times, so that medical staff can quickly pull out the pull cap 30, thereby improving the efficiency of liquid discharge.

[0038] Specifically, the pull-out cover 30 disclosed in this embodiment is sleeved on the opening of the liquid outlet pipe 20 , which can also ensure the cleanliness of the pipe opening of the liquid outlet pipe 20 and prevent pollutants from directly contacting the pipe opening.

[0039] Specifically, the anti-loosening drainage bag disclosed in this embodiment also includes a liquid inlet tube, one end of which extends from top to bottom through the upper end of the drainage bag body 10 into the drainage bag body 10, and the other end extends outside the drainage bag body 10. The liquid discharged by the patient can flow through the liquid inlet tube and be collected in the drainage bag body 10 to ensure hygiene.

[0040] Specifically, the drainage bag body 10 disclosed in this embodiment is a transparent drainage bag body, which can facilitate medical staff to observe the color of the liquid flowing out of the patient.

[0041] like Figure 2 , Figure 3 and Figure 5 As shown, as another implementation of this embodiment, the pull-out cover 30 includes a snap-in protrusion 31 disposed on one side of the drainage bag body 10. The snap-in protrusion 31 can be tightly connected with the liquid outlet tube 20, thereby increasing the stability and structural strength of the pull-out cover 30 and the liquid outlet tube 20, and preventing accidental loosening during normal use. The protective cover 40 is used to cover the snap-in protrusion 31 to prevent the snap-in protrusion 31 from being hooked by external objects, causing the pull-out cover 30 to accidentally detach from the liquid outlet tube 20.

[0042] Specifically, as another implementation of this embodiment, the anti-loosening drainage bag, wherein the protective cover 40 is provided with an abutment portion 41 and an avoidance portion 42 on a side facing away from the drainage bag body 10, and the pull-out cover 30 is rotatably provided at the end of the liquid outlet tube 20, and the cross-sectional shape of the avoidance portion 42 is adapted to the cross-sectional shape of the clamping protrusion 31, thereby increasing the stability of the pull-out cover 30 and the protective cover 40, and can further prevent the pull-out cover 30 from accidentally loosening.

[0043] For example, the protective cover 40 disclosed in this embodiment is provided with a relief portion 42 with a "X"-shaped cross section on one side away from the drainage bag body 10, and the cross section of the clamping protrusion 31 of the pull-out cover 30 is adapted thereto. When the anti-loosening drainage bag leaves the factory, the clamping protrusion 31 and the relief portion 42 are staggered, and the clamping protrusion 31 is in an "X" shape. When the pull-out cover 30 is pulled out vertically, the clamping protrusion 31 abuts against the abutment portion 41, and the pull-out cover 30 cannot be pulled out from the protective cover 40, which can further prevent the patient from pulling out by mistake and reduce the leakage of the drainage bag. When the medical staff needs to perform drainage work, they can slightly rotate the pull-out cover 30 so that the clamping protrusion 31 rotates from the "X" shape to the "X" shape, and can be smoothly pulled out from the relief portion 42 of the protective cover 40. The user only needs to simply rotate the pull-out cover 30, which is convenient for the user to operate.

[0044] Here, the cross-sectional shape of the clamping protrusion 31 is not limited and can be set according to actual conditions.

[0045] Specifically, as another implementation of this embodiment, a transverse partition 43 is provided in the protective cover 40, and an elastic member 32 is provided on the side of the clamping protrusion 31 facing the transverse partition 43, one end of the elastic member 32 is fixedly connected to the clamping protrusion 31, and the other end is in contact with the transverse partition 43. The provision of the elastic member 32 provides additional support force, increases the stability between the pull cover 30 and the protective cover 40, and ensures that they will not be accidentally loosened during normal use.

[0046] For example, in the closed state, the one side of the clamping protrusion 31 provided with the elastic member 32 abuts against the transverse partition 43 through the elastic member 32, and the other side abuts against the abutting portion 41 through the compression of the elastic member 32. Even in the process of transportation or shaking, the elastic member 32 can abut against the transverse partition 43 and the avoidance portion 42, preventing the pull-out cover 30 from accidentally rotating to a state where the clamping protrusion 31 faces the avoidance portion 42, thereby reducing the risk of liquid leakage. When the medical staff rotates the pull-out cover 30 so that the clamping protrusion 31 faces the avoidance portion 42, the elastic member 32 restores to generate thrust, exerts force in the direction toward the avoidance portion 42, and causes the pull-out cover 30 to automatically loosen from the liquid outlet tube 20.

[0047] In actual use, before medical staff need to remove the pull-out cover 30, they can first slightly squeeze the pull-out cover 30 in the direction toward the liquid outlet pipe 20, so that the elastic member 32 is contracted by the external force and no longer presses against the transverse partition 43, making it easier to rotate the pull-out cover 30 in the cavity to adjust it to a position where the locking protrusion 31 matches the avoidance portion 42.

[0048] Specifically, the elastic member 32 disclosed in this embodiment can help medical staff to smoothly pull out the pull cover 30 to drain the liquid even in an environment with insufficient light. The pull cover 30 only needs to be slightly rotated. When it is rotated to a position where the engaging protrusion 31 is directly opposite to the avoidance portion 42, the elastic member 32 will push out the pull cover 30, making it convenient for users to drain the liquid at night.

[0049] Specifically, as another implementation of this embodiment, the pull-out cover 30 includes a gripping portion 33 for gripping, and the gripping portion 33 is arranged on a side of the pull-out cover 30 away from the drainage bag body 10 and extends outside the protective cover 40, so that the medical staff can grip the pull-out cover 30 when performing drainage work, and provide a gripping force to the pull-out cover 30. The medical staff can smoothly operate the pull-out cover 30 through the gripping portion 33, open and close the liquid outlet of the liquid outlet tube 20, and facilitate the control of the drainage process.

[0050] Specifically, the setting of the grip portion 33 disclosed in this embodiment also helps to improve the safety of use. Through the grip portion 33, the user can more firmly control the pull cap 30, reducing the risk of accidental sliding or loosening, avoiding unnecessary liquid leakage during operation, and reducing the risk of infection.

[0051] Specifically, the gripping portion 33 disclosed in this embodiment is integrally formed with the clamping protrusion 31, eliminating the connection interface between the two and reducing the possibility of loosening or deformation. This integrally formed design allows the gripping portion 33 to be tightly combined with the clamping protrusion 31, increasing the stability of the connection.

[0052] like Figure 4 As shown, as another implementation of this embodiment, the gripping portion 33 is provided with a plurality of anti-slip grooves 331 along the circumferential direction. The provision of the anti-slip grooves 331 can increase the friction of the gripping portion 33, provide a better gripping area, and prevent the fingers of medical staff from slipping and losing grip due to wet hands or gloves with less friction on their hands.

[0053] Specifically, the anti-slip groove 331 disclosed in this embodiment is arranged along the axial direction of the grip portion 33. The anti-slip groove 331 can increase the stability of the user's grip and reduce the possibility of accidental sliding or loosening. Compared with the anti-slip groove 331 arranged radially, the anti-slip groove 331 arranged along the axial direction of the grip portion 33 can prevent external objects from hooking the anti-slip groove 331 and pulling out the pull cover 30.

[0054] like Figure 1 As shown, as another implementation of this embodiment, the upper end of the drainage bag body 10 is provided with a liquid inlet, and the upper end of the drainage bag body 10 is provided with a liquid inlet for receiving pus, blood, and liquid between human tissues or in the body cavity. The liquid inlet provides a fluid channel so that the liquid can smoothly enter the drainage bag to achieve an effective liquid collection function. The lower end is provided with a sealing port 11, which can effectively seal the bottom of the drainage bag to prevent liquid leakage.

[0055] Specifically, the end of the liquid outlet tube 20 disclosed in this embodiment is inserted into the sealing port 11, and the sealing port 11 can firmly clamp the liquid outlet tube 20. The liquid outlet tube 20 is fixedly connected to the sealing port 11 to ensure the stable connection between the liquid outlet tube 20 and the drainage bag body 10.

[0056] Specifically, as another implementation of this embodiment, the inner bottom surface of the drainage bag body 10 is provided with an inclined surface 12 inclined in the direction toward the sealing port 11. It can be used to better concentrate the liquid in the drainage bag body 10 during the drainage process, and the drainage liquid will not gather in the upper chamber. The liquid in the drainage bag body 10 will flow to the liquid outlet tube 20 in the sealing port 11 along with the guiding function of the inclined surface 12, which is convenient for medical staff to empty the liquid in the drainage bag body 10 more quickly.

[0057] Specifically, as another implementation of this embodiment, a support edge 13 is extended from the periphery of the drainage bag body 10. The support edge 13 can support the drainage bag body 10 and improve the sealing performance of the drainage bag body 10 to prevent leakage from the edge of the drainage bag body 10.

[0058] Specifically, the upper end of the support edge 13 disclosed in this embodiment is provided with a hanging ear, and hanging ropes are provided on both sides of the hanging ear. When in use, the anti-falling drainage bag is hung on the hook of the hospital bed through the hanging ear. During use, it is found that when the drainage tube is pulled unintentionally, the hanging ear will be separated from the hook, causing the drainage bag body 10 to fall. As an improved solution, the function of the hanging rope is to tie and fix the drainage bag body 10. The coordinated use of the hanging ear and the hanging rope can effectively prevent the drainage bag body 10 from accidentally falling.

[0059] Specifically, as another implementation of this embodiment, the drainage bag body 10 is marked with scales to facilitate doctors to judge the patient's condition based on the amount of fluid drained.

[0060] Specifically, the material of the drainage bag body 10 disclosed in this embodiment is usually thin and soft, and wrinkles are easy to appear, which makes it easy to make errors when reading the liquid. The provision of the supporting edge 13 can also facilitate medical staff to read the scale on the drainage bag body 10.

[0061] In summary, the present application discloses a drainage bag that is prevented from loosening. The conventional plug-in type pull-out cover 30 is used to open and close the liquid outlet of the liquid outlet tube 20. The production and manufacturing process is simple, the production efficiency is high, the cost is low, and the use is convenient. A protective cover 40 is provided at the connection between the pull-out cover 30 and the liquid outlet tube 20. The protective cover 40 serves as an additional barrier. During the patient's activities, the pull-out cover 30 can be effectively prevented from being loosened due to scratches or hooks on the connection between the pull-out cover 30 and the liquid outlet tube 20 by external objects, thereby ensuring the stability of the pull-out cover 30 and reducing the situation where the pull-out cover 30 is separated from the liquid outlet tube 20 and the liquid in the drainage bag body 10 leaks.

[0062] In actual use, when medical staff need to pull out the pull cover 30, they mainly pull it out by holding the end of the pull cover 30, and the outer surface of the holdable part is smooth and has no protrusions, which can avoid the pull cover 30 being pulled away when scratched.

[0063] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0064] It should be noted that the utility model takes an anti-loosening drainage bag as an example to introduce the specific structure and working principle of the utility model, but the application of the utility model is not limited to the anti-loosening drainage bag, and can also be applied to the production and use of other similar workpieces.

[0065] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drainage bag that prevents loosening, characterized in that: The anti-loosening drainage bag comprises: Drainage bag body; A liquid outlet tube is arranged at the end of the drainage bag body; A protective sleeve, which is sleeved on a side of the liquid outlet tube away from the drainage bag body, and a cavity is formed in the protective sleeve; A pull-out cover, one end of which is inserted into the cavity and connected to the liquid outlet pipe, and the other end of which extends outside the cavity, and the pull-out cover is used to open and close the liquid outlet of the liquid outlet pipe.

2. The anti-loosening drainage bag according to claim 1, characterized in that: The pull-out cover comprises a clamping protrusion arranged on one side close to the drainage bag body, and the protective sleeve is used for covering the clamping protrusion.

3. The anti-loosening drainage bag according to claim 2, characterized in that: A contact portion and an escape portion are arranged on one side of the protective sleeve away from the drainage bag body, the pull-out cover is rotatably arranged at the end of the liquid outlet tube, and the cross-sectional shape of the escape portion is adapted to the cross-sectional shape of the clamping protrusion.

4. The anti-loosening drainage bag according to claim 3, characterized in that: A transverse partition is arranged in the protective cover, and an elastic member is arranged on the side of the clamping protrusion facing the transverse partition. One end of the elastic member is fixedly connected to the clamping protrusion, and the other end abuts against the transverse partition.

5. The anti-loosening drainage bag according to claim 1, characterized in that: The pull-out cover comprises a gripping portion for gripping, wherein the gripping portion is arranged on a side of the pull-out cover away from the drainage bag body and extends outside the protective sleeve.

6. The anti-loosening drainage bag according to claim 5, characterized in that: The gripping portion is provided with a plurality of anti-slip grooves along the circumferential direction.

7. The anti-loosening drainage bag according to claim 1, characterized in that: The upper end of the drainage bag body is provided with a liquid inlet, and the lower end is provided with a sealing port, and the end of the liquid outlet tube is inserted into the sealing port.

8. The anti-loosening drainage bag according to claim 7, characterized in that: The inner bottom surface of the drainage bag body is provided with an inclined surface inclined in a direction toward the sealing opening.

9. The anti-loosening drainage bag according to claim 1, characterized in that: A supporting edge is extended from the outer periphery of the drainage bag body.

10. The anti-loosening drainage bag according to claim 1, characterized in that: The drainage bag body is marked with scales.

Images