Disposable clean bag with filter screen
By designing a drainage clean bag with a filter, the problems of difficult collection of uterine cavity tissue and leakage of distension fluid during hysteroscopic surgery were solved, achieving efficient and safe collection of distension fluid and extraction of uterine cavity tissue.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FIRST PEOPLES HOSPITAL OF YUHANG DISTRICT HANGZHOU
- Filing Date
- 2025-03-07
- Publication Date
- 2026-06-12
AI Technical Summary
During hysteroscopic surgery, the removed intrauterine tissue is small and difficult to collect, and the distending fluid is prone to leakage, affecting the efficiency and safety of the operation.
A disposable clean bag with a filter was designed, which includes a liquid collection bag, a drainage component and a filter. It uses an adhesive sterile membrane to form an inverted triangular drainage limiting slope, combined with a pull ring and pull rope structure, to easily extract uterine tissue from the filter.
It improves the collection efficiency of distending fluid, avoids leakage, enhances operational safety, simplifies the extraction process of uterine tissue, and improves the work efficiency and safety of medical staff.
Smart Images

Figure CN224345222U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical devices, and in particular to a disposable clean bag with a filter for drainage. Background Technology
[0002] Currently, distilled water, saline solution, and 5% glucose solution are commonly used as distension media in gynecological hysteroscopic surgery. To maintain the distension effect, fluid is continuously injected into the uterine cavity using an infusion bag. After distension, excess fluid is collected in a collection container through a disposable clean bag. After entering the uterine cavity, some of the distension fluid enters the bloodstream and is excreted through the kidneys; some is drained directly into the vagina through the dilated cervix and then excreted; and some flows out through the hysteroscope's outlet. This excreted distension fluid is collected in the collection container through a drainage bag. The uterine tissue removed during the surgery will also flow into the collection container along with the distension fluid due to the pressure within the uterine cavity. These excised specimens need to be collected completely and sent for pathological examination to confirm the diagnosis.
[0003] However, since the amount of distending fluid required in a single surgery is large, the amount of fluid flowing into the collection bucket can be as many as several liters. Meanwhile, the specimens removed during hysteroscopic surgery are often quite fragmented and small, sometimes only a few millimeters in size, making it difficult to find the tissue specimens that flow into the collection bucket. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a disposable drainage clean bag with a filter, which aims to improve the problem that specimens removed during hysteroscopic surgery are often fragmented and small, making them difficult to find in the prior art.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a disposable clean bag with filter screen for drainage, including a liquid collection bag, wherein a drainage component is fixedly connected to the top of the liquid collection bag, a connecting tube is fixedly connected to the bottom of the liquid collection bag, a urine drainage bag tube is fixedly installed at the bottom of the connecting tube, and an extraction component is installed inside the connecting tube;
[0006] The extraction component includes a plastic sleeve installed inside the connecting tube. A filter screen is fixedly connected to the bottom of the plastic sleeve, and a pull rope is fixedly connected to the top of the plastic sleeve. A pull ring is fixedly connected to the top of the pull rope.
[0007] As a further description of the above technical solution:
[0008] The liquid collection bag is funnel-shaped with openings at both the top and bottom.
[0009] As a further description of the above technical solution:
[0010] A hook is fixedly installed at the center of the outer wall of the liquid collection bag, and the pull ring and the hook are engaged.
[0011] As a further description of the above technical solution:
[0012] The drainage assembly includes an adhesive sterile membrane connected between the bottom of the adhesive sterile membrane and the top of the liquid collection bag. A protective film is glued to one side of the adhesive sterile membrane, and a drainage membrane is glued to the other side of the adhesive sterile membrane.
[0013] As a further description of the above technical solution:
[0014] The liquid collection bag is fitted with an elastic support tube at the top.
[0015] As a further description of the above technical solution:
[0016] The adhesive sterile membrane has adhesive on both sides, and both the drainage membrane and the protective membrane have easily peelable openings on both sides of their bottom.
[0017] As a further description of the above technical solution:
[0018] The outer wall of the plastic sleeve and the inner wall of the connecting pipe are interference-fitted.
[0019] This utility model has the following beneficial effects:
[0020] 1. In this invention, the combination of an adhesive sterile membrane and a drainage membrane forms an inverted triangular drainage limiting slope, ensuring that the distending fluid will not leak along the sides of the adhesive sterile membrane, but can flow smoothly into the liquid collection bag. This improves the liquid collection efficiency during the drainage process, effectively avoids leakage, and ensures that the distending fluid is accurately collected during the drainage process.
[0021] 2. In this invention, uterine tissue in the distending fluid is filtered through a filter screen, and a pull ring and pull rope mechanism are designed. Medical staff can easily extract the uterine tissue from the filter screen, avoiding the risk of direct contact with the distending fluid, thereby improving the safety of the operation. Furthermore, the extraction process is more convenient, avoiding the troubles and safety hazards that may arise from traditional manual operation, and improving the work efficiency and safety of medical staff. Attached Figure Description
[0022] Figure 1 A perspective view of the disposable clean bag with filter screen proposed in this utility model;
[0023] Figure 2 This is a structural diagram of the adhesive sterile membrane of the disposable clean bag with filter screen proposed in this utility model;
[0024] Figure 3 This is a schematic diagram of the filter structure of the disposable clean bag with filter screen for drainage proposed in this utility model;
[0025] Figure 4 This is a schematic diagram of the drawstring structure of the disposable clean bag with filter screen proposed in this utility model.
[0026] Legend:
[0027] 1. Liquid collection bag; 2. Adhesive sterile membrane; 3. Protective membrane; 4. Drainage membrane; 5. Elastic support tube; 6. Connecting tube; 7. Drainage urine bag tube; 8. Plastic sleeve; 9. Filter screen; 10. Pull rope; 11. Pull ring; 12. Hook. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] Reference Figures 1-4 An embodiment of this utility model provides: a disposable drainage clean bag with filter screen, including a liquid collection bag 1, a drainage component fixedly connected to the top of the liquid collection bag 1, a connecting tube 6 fixedly connected to the bottom of the liquid collection bag 1, a drainage urine bag tube 7 fixedly installed at the bottom of the connecting tube 6, and an extraction component installed inside the connecting tube 6. The distending fluid flowing out of the patient's body will flow into the liquid collection bag 1 along the drainage component, and then pass through the extraction component into the drainage urine bag tube 7, until it flows into the collection bucket;
[0030] Reference Figure 1 , Figure 3 and Figure 4 The extraction component includes a plastic sleeve 8, which is installed inside the connecting tube 6. A filter screen 9 is fixedly connected to the bottom of the plastic sleeve 8, and a pull rope 10 is fixedly connected to the top of the plastic sleeve 8. A pull ring 11 is fixedly connected to the top of the pull rope 10. When the distending fluid passes through the extraction component, it is filtered out of the uterine cavity tissue by the filter screen 9. Then, the medical staff only needs to pull the pull ring 11 and lift it upwards. With the pull rope 10 connected, the plastic sleeve 8 is pulled out from the inside of the connecting tube 6. Finally, the plastic sleeve 8 and the filter screen 9 are removed upwards from the inside of the liquid collection bag 1, making it easier for the medical staff to extract the uterine cavity tissue intercepted on the filter screen 9.
[0031] Reference Figure 1 , Figure 3 and Figure 4The liquid collection bag 1 is funnel-shaped with openings at both ends, allowing the distending fluid flowing from the drainage assembly to enter the drainage urine bag tube 7 connected to the collection bucket under the guidance of the liquid collection bag 1. A hook 12 is fixedly installed at the center of the outer wall of the liquid collection bag 1. The pull ring 11 and the hook 12 are engaged, preventing the pull ring 11 and the pull rope 10 from shaking during use and affecting the use of the device. An elastic support tube 5 is installed at the top of the liquid collection bag 1. The elastic support tube 5 can open the top opening of the liquid collection bag 1 to form an opening for the distending fluid to enter. The outer wall of the plastic sleeve 8 and the inner wall of the connecting tube 6 are press-fitted, so that the plastic sleeve 8 can be fixed inside the connecting tube 6, ensuring that the uterine cavity tissue is collected when the distending fluid flows down.
[0032] Reference Figure 1 and Figure 2 The drainage assembly includes an adhesive sterile membrane 2, with its bottom connected to the top of the liquid collection bag 1. A protective film 3 is glued to one side of the adhesive sterile membrane 2, and a drainage membrane 4 is glued to the other side. By peeling off the protective film 3, the adhesive sterile membrane 2 can be attached to the area to be drained, allowing the distending fluid to be smoothly drained into the collection container. The adhesiveness of both sides of the adhesive sterile membrane 2 allows the drainage assembly to be directly attached to the location requiring drainage, making operation more convenient. Both the drainage membrane 4 and the protective film 3 have easy-to-open openings on both sides of their bottom, making it easier for medical staff to peel off the protective film 3 and the drainage membrane 4 for rapid deployment.
[0033] Working principle: When using a clean bag to drain distending fluid, simply peel off the protective film 3 on the back of the adhesive sterile film 2. Then, use the adhesive structure on the back of the adhesive sterile film 2 to attach it to the area to be drained. Next, medical staff peel off the corners on both sides of the bottom of the drainage film 4, lift a corner, roll up the lifted portion, and press it to adhere it to the adhesive layer on the front side of the adhesive sterile film 2. This creates an inverted triangular drainage limiting slope on both sides of the adhesive sterile film 2. The distending fluid will flow down along the triangular limiting slope and enter the liquid collection bag 1. This prevents the distending fluid from flowing out along the sides of the adhesive sterile film 2 and causing leakage.
[0034] The distending fluid then flows downwards along the inside of the fluid collection bag 1, passes through the filter screen 9, and enters the drainage urine bag tube 7, subsequently flowing into the collection bucket. During this process, the uterine tissue in the distending fluid is filtered and collected by the filter screen 9. After drainage is complete, medical staff simply pull the pull ring 11 to detach it from the hook 12, and simultaneously lift the pull ring 11 upwards. Using the connection between the pull rope 10 and the filter screen 9, the plastic sleeve 8 is pulled out from inside the connecting tube 6, making it easier for medical staff to extract the uterine tissue from the filter screen 9. This avoids direct contact between medical staff and the distending fluid, ensuring the safety of medical staff when extracting uterine tissue from the distending fluid, and also making it easier to obtain the uterine tissue from the distending fluid.
[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A disposable clean bag with a filter screen for drainage, comprising a liquid collection bag (1), characterized in that: The top of the liquid collection bag (1) is fixedly connected to a drainage component, the bottom of the liquid collection bag (1) is fixedly connected to a connecting tube (6), the bottom of the connecting tube (6) is fixedly installed with a drainage urine bag tube (7), and an extraction component is installed inside the connecting tube (6). The extraction component includes a plastic sleeve (8), which is installed inside the connecting tube (6). A filter screen (9) is fixedly connected to the bottom of the plastic sleeve (8), and a pull rope (10) is fixedly connected to the top of the plastic sleeve (8). A pull ring (11) is fixedly connected to the top of the pull rope (10).
2. The disposable clean bag with filter screen for drainage according to claim 1, characterized in that: The liquid collection bag (1) is funnel-shaped with openings at both the top and bottom.
3. The disposable clean bag with filter screen for drainage according to claim 1, characterized in that: A hook (12) is fixedly installed at the center of the outer wall of the liquid collection bag (1), and the pull ring (11) and the hook (12) are engaged.
4. The disposable clean bag with filter screen for drainage according to claim 1, characterized in that: The drainage assembly includes an adhesive sterile membrane (2), the bottom of which is connected to the top of the liquid collection bag (1), a protective film (3) is glued to one side of the adhesive sterile membrane (2), and a drainage membrane (4) is glued to the other side of the adhesive sterile membrane (2).
5. The disposable clean bag with filter screen for drainage according to claim 1, characterized in that: The liquid collection bag (1) is fitted with an elastic support tube (5) at the top.
6. The disposable clean bag with filter screen for drainage according to claim 4, characterized in that: The adhesive sterile membrane (2) has adhesive on both sides, and the drainage membrane (4) and the protective membrane (3) have easily peelable openings on both sides of the bottom.
7. The disposable clean bag with filter screen for drainage according to claim 1, characterized in that: The outer wall of the plastic sleeve (8) and the inner wall of the connecting pipe (6) are interference-fitted.