Uterine cavity effusion suction device
By designing a uterine cavity fluid aspiration device, an electromagnet-controlled adsorption component and polymer materials were used to achieve 24-hour continuous adsorption within the uterine cavity, overcoming the shortcomings of existing methods, improving the fluid removal effect, and reducing the risk of damage.
Patent Information
- Application Number
- CN202511848673.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-09
- Publication Date
- 2026-01-27
AI Technical Summary
Existing methods for aspirating intrauterine fluid are ineffective, often leaving residual fluid, and may damage the endometrium or affect pregnancy rates. There is also a lack of specialized aspiration devices.
A device for aspirating uterine cavity fluid was designed, comprising an outer shell, a release component, an adsorption component, and a cap. The release and retraction of the adsorption component are controlled by an electromagnet. The device uses a polymer adsorption material and a ring-shaped airbag to continuously adsorb the uterine cavity fluid for 24 hours and then removes it by pulling a string.
It achieves efficient and safe adsorption of uterine cavity fluid, avoids the side effects of traditional methods, ensures pregnancy needs, and the removal process is simple and requires no additional operations.
Smart Images
Figure CN121400945A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of medical device technology, specifically relating to a device for aspirating fluid from the uterine cavity. Background Technology
[0002] Intrauterine fluid accumulation refers to the accumulation of fluid within the uterine cavity of a woman. Its causes are complex and varied, broadly categorized into infectious and non-infectious factors, and are related to factors such as uterine scar diverticulum, endometritis, intrauterine adhesions, and hydrosalpinx. Intrauterine fluid accumulation not only affects embryonic development but can also create an unfavorable endometrial environment for embryo implantation, thus impacting pregnancy outcomes. Studies have shown that intrauterine fluid accumulation not only reduces the probability of natural pregnancy but also significantly affects the success rate of embryo transfer. Therefore, necessary pre-treatment is crucial before IVF. These pre-treatment measures typically include surgical intervention and drug therapy.
[0003] Drug treatment typically involves using antibiotics or hormones to reduce inflammation or regulate endocrine function, but the effectiveness of these methods varies from person to person and may be accompanied by side effects. Surgical interventions such as hysteroscopy can directly remove the fluid, but surgical risks and recovery time are factors that patients need to consider, and they cannot address the patient's need for pregnancy that month.
[0004] Clinically, the commonly used method for aspirating intrauterine fluid before embryo transfer involves inserting an artificial insemination tube or urinary catheter into the uterine cavity for aspiration. However, this method is ineffective when the fluid is concentrated on one side of the uterine horn or when the amount is small. Fluid often remains, and excessive suction force can damage the endometrium, potentially leading to the cancellation of the embryo transfer cycle or affecting pregnancy rates after embryo transfer. Current technology shows that although some new materials are used in medical devices, dedicated adsorption devices for intrauterine fluid accumulation remain scarce. To some extent, the technology still has limitations.
[0005] Therefore, a device for aspirating fluid from the uterine cavity is needed to solve the above-mentioned technical problems. Summary of the Invention
[0006] To address the aforementioned technical problems, this invention designs a uterine cavity fluid aspiration device. This device absorbs uterine cavity fluid by placing a component capable of absorbing uterine cavity fluid into the patient's uterine cavity. After use (24 hours), the fluid can be directly removed via an external pull line. This method replaces traditional drug treatment and direct aspiration, effectively absorbing uterine cavity fluid and preventing multiple side effects.
[0007] To achieve the above-mentioned technical effects, the present invention discloses a uterine cavity fluid aspiration device, comprising: an outer shell, a release component, an adsorption component, and a cover; the cover is movably installed at the front end of the outer shell, the adsorption component is movably installed inside the outer shell, and the release component is sleeved inside the adsorption component; the release and retraction of the adsorption component are controlled by pushing and pulling the release component. The adsorption assembly includes: a fixed cylinder, an annular airbag, and an adsorption layer; multiple annular airbags are arranged in a linear array on the outside of the fixed cylinder, and the adsorption layer is fixedly arranged inside the fixed cylinder. The adsorption layer is made of a polymer adsorption material; an opening is also provided at the upper end of the annular airbag on the fixed cylinder; and an inclined part is also installed at the lower end of the opening of the fixed cylinder; the adsorption assembly is released by a release component to adsorb the uterine cavity fluid. Furthermore, the release assembly includes: a release lever and a handle; the release lever is fixedly installed at the front end of the handle, and an electromagnet is fixedly installed at the front end of the release lever; a control module and a power supply are fixedly installed inside the handle, and a display screen is fixedly installed on the side of the handle near the release lever, and control buttons are fixedly installed on one side of the display screen. Furthermore, the release lever is also provided with a scale; Furthermore, a metal groove is provided in the middle of the lower end of the fixed cylinder; at the same time, a pull wire is fixedly installed on one side of the lower end of the fixed cylinder. Furthermore, a magnet is fixedly installed at the other end of the hood, which is opposite to the rotating mounting position, and another magnet of opposite polarity is installed on the release rod. The hood has a spherical structure.
[0008] The beneficial effects of this invention are: This invention designs a device for aspirating uterine cavity fluid, comprising an outer shell, a release component, an adsorption component, and a cover; the cover is movably mounted at the front end of the outer shell, the adsorption component is movably mounted inside the outer shell, and the release component is fitted inside the adsorption component; the release and retraction of the adsorption component are controlled by pushing and pulling the release component. The designed adsorption component can adsorb fluid accumulated in the patient's uterine cavity. This component can be fully inserted into the uterine cavity for 24 hours, effectively enhancing the adsorption effect. After adsorption is complete, the adsorption component can be easily removed using the designated release component. Furthermore, the electromagnet on the release rod allows the adsorption component to be released directly into the patient's uterine cavity. Multiple linearly arrayed airbags on the adsorption component expand to a certain volume after release, fixing the adsorption component at the cervix for easy adsorption. To ensure accurate placement, the release rod is marked with graduations, allowing for precise control of the release depth. Attached Figure Description
[0009] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.
[0010] Figure 1 This is a schematic diagram of the overall structure of a device for aspirating fluid from the uterine cavity. Figure 2 An exploded view of a device for aspirating fluid from a uterine cavity. Figure 3 This is a schematic diagram of the overall structure of the adsorption component of a uterine cavity fluid aspiration device. Figure 4 This is a cross-sectional view of the adsorption component of a uterine cavity fluid aspiration device; Figure 5 This is a cross-sectional view of a device for aspirating fluid from the uterine cavity. Figure 6 This is an enlarged structural diagram of the head end of the outer shell of a device for aspirating fluid from the uterine cavity.
[0011] The attached diagram lists the components represented by each number as follows: 1-Outer shell, 11-Headpiece, 111-Magnet, 112-Through groove, 2-Release assembly, 20-Handle, 21-Display screen, 22-Control button, 23-Scale, 24-Release lever, 241-Electromagnet, 25-Control module, 26-Power supply, 3-Adsorption assembly, 31-Fixing cylinder, 32-Annular airbag, 33-Pull cord, 34-Adsorption layer, 35-Inclined part, 351-Opening. Detailed Implementation
[0012] In response to the problems of traditional methods for treating uterine effusion, such as "limited effectiveness, numerous side effects, and inability to meet the needs of the current month's pregnancy," this invention achieves efficient removal of uterine effusion through "24-hour in-situ intrauterine adsorption," avoiding the drawbacks of drugs and surgery.
[0013] Example 1 A device for aspirating intrauterine fluid includes: an outer shell 1, a release component 2, an adsorption component 3, and a cover 11; the cover 11 is movably mounted on the front end of the outer shell 1, the adsorption component 3 is movably mounted inside the outer shell 1, and the release component 2 is sleeved inside the adsorption component 3; the release component 3 is controlled to be released and retracted by pushing and pulling the release component 2; the adsorption component 3 includes: a fixed cylinder 31, an annular airbag 32, and an adsorption layer 34; multiple annular airbags 32 are arranged in a linear array on the outside of the fixed cylinder 31, while the fixed cylinder 31... The adsorption layer 34 is fixedly installed inside, and the adsorption layer 34 is made of polymer adsorption material; the upper end of the annular airbag 32 is provided with an opening 351 on the fixed cylinder 31; at the same time, an inclined part 35 is installed at the lower end of the fixed cylinder 31 at the opening 351. Specifically, the inclined part 35 allows the uterine cavity fluid at the corresponding position to flow into the adsorption layer 34 installed inside, and the upper end of the fixed cylinder 31 is open to directly receive the uterine cavity fluid; the adsorption component 3 is released by the release component 2 to adsorb the uterine cavity fluid. The release assembly 2 includes a release rod 24 and a handle 20. The release rod 24 is fixedly mounted at the front end of the handle 20, and an electromagnet 241 is fixedly mounted at the front end of the release rod 24. A control module 25 and a power supply 26 are fixedly mounted inside the handle 20. A display screen 21 is fixedly mounted on the side of the handle 20 near the release rod 24, and a control button 22 is fixedly mounted on one side of the display screen 21. The release rod 24 is also provided with a scale 23. With clear scale 23 on the release rod 24, medical staff can intuitively grasp the depth of the device entering the uterine cavity through the scale 23 when pushing the adsorption assembly 3, and accurately control it. The placement of the adsorption component 3 is as follows (e.g., 2-3 cm above the internal cervical os, which is the core area where uterine fluid accumulates); at the same time, an electromagnet 241 is installed at the front end of the release rod 24 of the release component 2, and a metal groove is opened in the middle of the lower end of the fixing cylinder 31 of the adsorption component 3. During the pushing process, the electromagnet 241 is adsorbed and fixed with the metal groove, ensuring that the adsorption component 3 moves synchronously with the release rod 24, and avoiding the adsorption component 3 from falling off or shifting during the pushing process; when it reaches the designated position, the power supply 26 of the electromagnet 241 is cut off through the control module 25 (specifically the control button 22), and the adsorption component 3 separates from the release rod 24 to achieve precise release.
[0014] A magnet 111 is fixedly installed at the other end of the hood 11 opposite to the rotating mounting position, and an electromagnet 241 is installed on the release rod 24. The hood 11 has a spherical structure, which makes it easier to insert into the patient's body. A spherical cover 11 is movably installed at the front end of the outer shell 1. A magnet 111 is fixedly installed at the other end of the cover 11 opposite to the rotating position. An electromagnet 241 is installed on the release rod 24. When the adsorption component 3 is pushed, the cover 11 remains closed under the adsorption of the magnet 111, enclosing the adsorption component 3 inside the outer shell 1 and preventing the adsorption component 3 from directly contacting the uterine cavity mucosa. When the release rod 24 is pushed to the designated position, the electromagnet 241 on the release rod 24 moves forward with the release rod 24 and separates from the magnet 111 of the cover 11, opening the cover 11 and exposing the adsorption component 3. When storing, the release rod 24 is pulled, and the electromagnet 241 on the release rod 24 re-adsorbs with the cover 11. More specifically, a metal plate is also fixedly installed in the middle of the inside of the cover 11 to ensure that when the cover 11 is not completely closed during the removal process (due to the compression closure of the vaginal wall), it can still be attracted by the adsorption of the release rod 24. In summary, this invention features a linear array of multiple annular airbags 32 outside the fixed cylinder 31 of the adsorption component 3, with an adsorption layer 34 made of polymer adsorption material fixed inside. The fixed cylinder 31 has an opening 351 corresponding to the position of the adsorption layer 34. In use, after the adsorption component 3 is pushed to the designated position in the uterine cavity by the release component 2, the annular airbags 32 expand and adhere to the inner wall of the uterine cavity, stably fixing the adsorption component 3 near the cervix. At the same time, the fluid in the uterine cavity enters the adsorption layer 34 through the opening 351 of the fixed cylinder 31. The polymer adsorption material, with its high water absorption ratio (capable of adsorbing liquids tens of times its own weight), continuously adsorbs the fluid, and the adsorption process lasts for 24 hours, ensuring that the fluid in areas that are difficult to reach by traditional aspiration, such as the side of the uterine horn and the depth of the uterine cavity, is fully absorbed. Meanwhile, the present invention has a pull wire 33 fixedly installed on one side of the lower end of the fixed tube 31. After the adsorption component 3 completes 24 hours of fluid adsorption, medical staff do not need to perform additional uterine cavity operations. They can simply pull the external pull wire 33 to remove the adsorption component 3 from the uterine cavity. The entire removal process is short and does not require cervical dilation or the use of instruments to enter the uterine cavity.
[0015] Specifically, the operating principle of this device is as follows: Before use, the device preparation must be completed: ensure that the annular airbag 32 of the adsorption component 3 is in an uninflated state and that the adsorption layer 34 is dry and intact; check that the power supply of the release component 2 is sufficient and that the display screen 21, control button 22 and electromagnet 241 are functioning normally; the electromagnet 241 at the front end of the release rod 24 is adsorbed and fixed to the metal groove at the lower end of the fixing cylinder 31 of the adsorption component 3, so that the adsorption component 3 is tightly attached to the front end of the release rod, and at the same time, the cover 11 is kept closed under the adsorption of the magnet 111, enclosing the adsorption component 3 inside the outer shell 1, so as to avoid direct contact between the adsorption component and the uterine cavity mucosa during the pushing process and cause damage.
[0016] Pushing and Positioning Phase: Medical staff hold the handle 20 and slowly insert the closed outer shell 1 into the patient's uterine cavity. Using the clear markings on the release lever, they can visually determine the depth of the device's entry into the uterine cavity and accurately deliver the adsorption component 3 to the target location (such as the core area of fluid accumulation above the internal cervical os). During the pushing process, the spherical cap 11 reduces friction and irritation to the vaginal wall and cervix, ensuring smooth insertion; the adsorption and fixation relationship between the electromagnet 241 and the adsorption component 3 prevents the adsorption component 3 from falling off or shifting during pushing, ensuring accurate positioning.
[0017] Release and Adsorption Phase: Upon reaching the designated location, medical staff issue a command via control button 22 on handle 20. Control module 25 cuts off the power to electromagnet 241, causing electromagnet 241 to separate from the metal groove of adsorption component 3. Simultaneously, electromagnet 241 on release rod 24 detaches from the metal plate on cover 11, and cover 11 naturally opens under the influence of the intrauterine environment, exposing adsorption component 3. Subsequently, the annular airbag 32 of adsorption component 3 slowly expands upon contact with the uterine cavity wall, adhering to the uterine cavity wall with appropriate expansion force, thus stably fixing adsorption component 3 in the target position and preventing displacement during adsorption. At this time, the fluid in the uterine cavity can flow smoothly into the adsorption layer 34 inside the fixed cylinder 31 through the opening at the upper end and the guide of the inclined part. The adsorption layer 34 is made of high molecular adsorption material, which, with its high water absorption ratio, continuously adsorbs the fluid, especially reaching areas that are difficult to cover with traditional aspiration, such as the uterine horn and deep within the uterine cavity, achieving 24-hour in-situ continuous adsorption to ensure thorough removal of the fluid.
[0018] Removal Stage: After 24 hours of adsorption, medical staff do not need to perform any additional intrauterine operations. They only need to pull the external pull wire 33 on one side of the lower end of the adsorption component 3 to slowly remove the adsorption component 3 from the intrauterine cavity.
[0019] The preferred embodiments of the present invention disclosed above are only for the purpose of illustrating the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation described.
Claims
1. A device for aspirating uterine cavity fluid, characterized in that, It includes an outer shell, a release component, an adsorption component, and a cover; the cover is movably mounted on the front end of the outer shell, the adsorption component is movably mounted inside the outer shell, and the release component is fitted inside the adsorption component; the release and retraction of the adsorption component are controlled by pushing and pulling the release component. The adsorption assembly includes: a fixed cylinder, an annular airbag, and an adsorption layer; multiple annular airbags are arranged in a linear array on the outside of the fixed cylinder, and the adsorption layer is fixedly arranged inside the fixed cylinder, the adsorption layer being made of a polymer adsorption material; an opening is also provided at the upper end of the annular airbag on the fixed cylinder; and an inclined part is also installed at the lower end of the opening position of the fixed cylinder; the adsorption assembly is released by a release component to adsorb the uterine cavity fluid.
2. The device for aspirating uterine cavity fluid according to claim 1, characterized in that, The release assembly includes a release lever and a handle; the release lever is fixedly installed at the front end of the handle, and an electromagnet is fixedly installed at the front end of the release lever; a control module and a power supply are fixedly installed inside the handle, and a display screen is fixedly installed on the side of the handle near the release lever, and control buttons are fixedly installed on the side of the display screen.
3. The device for aspirating uterine cavity fluid according to claim 1, characterized in that, The release lever is also equipped with a scale.
4. The device for aspirating uterine cavity fluid according to claim 1, characterized in that, A metal groove is provided in the middle of the lower end of the fixed cylinder; at the same time, a pull wire is fixedly installed on one side of the lower end of the fixed cylinder.
5. The device for aspirating uterine cavity fluid according to claim 1, characterized in that, A magnet is also fixedly installed at the other end of the hood, which is opposite to the rotating mounting position. At the same time, another magnet of opposite polarity is installed on the release rod, and the hood has a spherical structure.