Medical drainage ball
By designing the recuperative and collection balloons and controlling the one-way valve of the negative pressure component, the operation of medical drainage balls has been automated and continuous, solving the problems of cumbersome and error-prone operation of traditional drainage balls and improving safety and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE UNIVERSITY OF HONG KONG SHENZHEN HOSPITAL
- Filing Date
- 2025-02-27
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional medical drainage balls are cumbersome to operate and prone to medical accidents. Existing designs require medical staff to perform additional operations while squeezing the ball to prevent gas backflow, which is inefficient and prone to errors.
The design employs a capsule and a collection capsule, combined with a one-way valve control mechanism for the negative pressure component, to achieve automated and continuous drainage operations. Negative pressure is formed and liquid is drawn in by compressing and releasing the capsule, and the unidirectional flow of fluid is controlled by an inlet one-way valve and an outlet one-way valve, respectively.
It reduces operational complexity, minimizes human error, improves surgical safety, and prevents the risk of infection caused by fluid backflow and gas contamination.
Smart Images
Figure CN224523673U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical devices, and in particular to medical drainage balls. Background Technology
[0002] Medical drainage balls, as key devices in the medical field for draining fluid from patients, are widely used in postoperative care of various surgeries and in the daily management of patients with chronic diseases. Traditional medical drainage balls typically consist of a single spherical structure that draws out fluid by manually squeezing to create negative pressure.
[0003] Current designs require healthcare professionals to perform additional operations on the inhalation tube, such as folding or clamping, while squeezing the bulb to ensure no gas backflow occurs. This method is not only inefficient but also prone to causing medical accidents due to improper operation. Utility Model Content
[0004] This invention provides a medical drainage ball that solves the problems of cumbersome operation and the risk of medical accidents associated with drainage balls.
[0005] This utility model provides a medical drainage ball, which includes:
[0006] The retractable capsule is equipped with an intake port and an exhaust port.
[0007] A collection bladder, the sidewall of which is connected to the sidewall of the retractable bladder, and the collection bladder communicates with the interior of the retractable bladder through a connecting channel;
[0008] A liquid guide tube has an inlet end and an outlet end, the outlet end being connected to the suction port; and
[0009] The negative pressure assembly includes an inlet check valve and an outlet check valve. The inlet check valve is disposed in the suction port or the liquid guide tube, and the outlet check valve is disposed in the exhaust port.
[0010] When the recoil bladder is compressed and its volume decreases, the inlet one-way valve closes and the outlet one-way valve opens, so that the gas in the recoil bladder is discharged through the outlet one-way valve; when the recoil bladder retracts and its volume increases, the inlet one-way valve opens and the outlet one-way valve closes, so that a negative pressure is formed in the liquid guide tube to draw in fluid through the suction port, and then the fluid is introduced into the recoil bladder and flows into the collection bladder.
[0011] Preferably, the outer wall of the collection bag is provided with several scale lines.
[0012] Preferably, the bottom of the collection bag is provided with a plurality of positioning posts, and each positioning post is provided with a positioning hole;
[0013] The medical drainage ball also includes a measurement and calibration component, which includes a calibration base and several insertion posts. Each insertion post is detachably inserted into each of the positioning holes, thereby defining the relative position of the calibration base and the collection bag.
[0014] Preferably, the measurement calibration component further includes a level, and the calibration base has a clearance groove, with the level disposed in the clearance groove.
[0015] Preferably, the discharge check valve includes a valve body, a support frame, a valve core, and an elastic element. A limiting skirt is provided on the outer periphery of the valve body. The valve body is inserted into the exhaust port, and the limiting skirt blocks the exhaust port. The support frame is disposed in the valve body, and a valve hole is opened in the valve body. The valve core is slidably disposed on the support frame and passes through the valve hole. The elastic element is disposed on the support frame and drivenly connected to the valve core. The elastic element is used to provide a force to drive the valve core to slide and block the valve hole. The valve body is configured to move under the pressure of the fluid in the plenum, thereby opening the valve hole.
[0016] Preferably, the inlet one-way valve includes a duckbill valve, which includes a valve seat, two first closing lips and two second closing lips. The valve seat is disposed inside the inlet, the two first closing lips are disposed opposite to each other on the valve seat, and the two second closing lips are disposed opposite to each other on the valve seat. The two first closing lips and the two second closing lips all face the retractable bladder, and the two first closing lips and the two second closing lips together form a one-way channel.
[0017] Preferably, the inlet end has a plurality of through holes along its sidewall, and each of the through holes is evenly distributed around the sidewall of the liquid guide tube.
[0018] Preferably, an outlet column is provided on the side wall of the collection bag, and the outlet column is connected to the collection bag;
[0019] The medical drainage ball also includes a sealing component, which includes an installation ring, a flexible connecting strip, and a plug. The installation ring is sleeved on the outer wall of the outlet column. One end of the flexible connecting strip is connected to the installation ring, and the other end of the flexible connecting strip is connected to the plug. The plug is detachably inserted into the outlet column to seal the outlet column.
[0020] Preferably, the recoil capsule and the collection capsule are integrally formed.
[0021] Preferably, the medical drainage ball further includes a threaded connection assembly, which includes a first connecting ring and a second connecting ring. The first connecting ring is disposed on the retractable sac, and the second connecting ring is disposed on the collection sac. The first connecting ring and the second connecting ring are threadedly connected, thereby the retractable sac communicates with the collection sac.
[0022] The following are the beneficial effects of implementing this utility model:
[0023] This utility model relates to a medical drainage ball, which, through the integrated design of the recuperative and collection balloons and the one-way valve control mechanism of the negative pressure component, achieves automated and continuous drainage operation. Medical staff only need to perform simple operations of compressing and releasing the recuperative balloon to complete the drainage process, without the need for frequent disassembly and assembly of tube-blocking components or folding of the tube to form a blockage, thus significantly reducing operational complexity and the possibility of human error.
[0024] Furthermore, the inlet and outlet check valves in the negative pressure assembly control the drainage and venting processes respectively, ensuring unidirectional flow of fluids (gas and liquid) and preventing backflow. This effectively reduces the risk of infection due to liquid backflow or gas contamination, improving surgical safety. Attached Figure Description
[0025] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally denote like parts.
[0026] Figure 1 This is a schematic diagram of the structure of the medical drainage ball in some embodiments of this utility model;
[0027] Figure 2 yes Figure 1 A schematic diagram of the internal structure of the medical drainage ball shown.
[0028] Figure 3 This is a schematic diagram of the structure of the medical drainage ball in some other embodiments of this utility model;
[0029] Figure 4 yes Figure 2 The enlarged view of the medical drainage ball at point A is shown.
[0030] Figure 5 This is a schematic diagram of the structure of the one-way valve introduced in some embodiments of this utility model;
[0031] Figure 6 yes Figure 1 The image shows a magnified view of the medical drainage ball at point B. Detailed Implementation
[0032] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be more thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.
[0033] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.
[0034] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0035] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0036] Figure 1 The following is an illustration of a medical drainage ball 10 in some embodiments of the present invention. The medical drainage ball 10 includes a retractable bladder 1, a collection bladder 2, a drainage tube 3, and a negative pressure component 4. The collection bladder 2 is connected to the retractable bladder 1, the drainage tube 3 is connected to the retractable bladder 1, and the negative pressure component 4 is disposed on the retractable bladder 1.
[0037] Understandably, the retractable bladder 1 is used to generate negative pressure and temporarily store the drainage fluid. The collection bladder 2 is used to store the fluid flowing in from the retractable bladder 1. The negative pressure assembly 4 is used to control the unidirectional flow of liquid and gas.
[0038] like Figures 1 to 3 As shown, the recoil capsule 1 is provided with an inlet 11 and an outlet 12. The sidewall of the collection capsule 2 is connected to the sidewall of the recoil capsule 1, and the collection capsule 2 is connected to the interior of the recoil capsule 1 through a connecting channel 21. The liquid guide tube 3 has an inlet end 31 and an outlet end 32, and the outlet end 32 is connected to the inlet 11. The negative pressure assembly 4 includes an inlet one-way valve 41 and an outlet one-way valve 42. The inlet one-way valve 41 is disposed in the inlet 11 or in the liquid guide tube 3, and the outlet one-way valve 42 is disposed in the outlet 12.
[0039] When the volume of the retractable bladder 1 decreases due to compression, the inlet check valve 41 closes and the outlet check valve 42 opens, so that the gas in the retractable bladder 1 is discharged through the outlet check valve 42; when the volume of the retractable bladder 1 increases due to retractable deformation, the inlet check valve 41 opens and the outlet check valve 42 closes, so that a negative pressure is formed in the liquid guide tube 3 to draw in fluid through the suction port 11, and then the fluid is introduced into the retractable bladder 1 and flows into the collection bladder 2.
[0040] Understandably, the suction port 11 is used to connect to the outlet end 32 of the liquid guide tube 3, allowing the drainage liquid to enter the recoil capsule 1. The exhaust port 12 is used to expel the gas inside the recoil capsule 1, ensuring the formation of a negative pressure environment.
[0041] A connecting channel 21 is positioned between the collection bag 2 and the recuperative bag 1 to ensure that fluid can flow smoothly from the recuperative bag 1 into the collection bag 2. A drainage tube 3 is used to guide drainage fluid from the patient into the recuperative bag 1. The inlet end 31 is inserted into the patient to collect the fluid. The outlet end 32 is connected to the suction port 11 of the recuperative bag 1 to deliver the fluid to the recuperative bag 1.
[0042] An inlet check valve 41 is installed inside the suction port 11 or the liquid guide tube 3 to ensure that liquid can only flow into the receptacle 1 from the liquid guide tube 3 and cannot flow in the reverse direction. An outlet check valve 42 is used to discharge gas from the receptacle 1 and to prevent external gas from entering the receptacle 1.
[0043] It should be noted that the recoil capsule 1 is made of elastic material, which can be compressed under external pressure and return to its original shape after the pressure is released. When the recoil capsule 1 is compressed, its internal volume decreases and the gas is discharged through the exhaust port 12; when the recoil capsule 1 returns to its original shape, its internal volume increases, forming a negative pressure, thereby drawing in the drainage liquid through the suction port 11.
[0044] In actual operation, medical staff press the rectal retractor 1 to reduce its volume. At this time, the inlet one-way valve 41 closes and the outlet one-way valve 42 opens, allowing the gas inside the rectal retractor 1 to be discharged through the exhaust port 12. Then, the rectal retractor 1 is released, and its elastic deformation increases its volume, creating negative pressure. At this time, the inlet one-way valve 41 opens and the outlet one-way valve 42 closes, allowing the liquid in the drainage tube 3 to be drawn into the rectal retractor 1 through the suction port 11. Subsequently, after the drainage liquid enters the rectal retractor 1, it flows into the collection bag 2 for storage through the connecting channel 21.
[0045] like Figure 2 As shown, in some embodiments of the medical drainage ball 10, several scale lines 22 are provided on the outer wall of the collection bag 2.
[0046] Understandably, the graduation lines 22 are evenly distributed along the height of the collection bladder 2 to indicate the volume of the drained liquid within the collection bladder 2. The graduation lines 22 are marked using a clear, wear-resistant method (such as laser engraving or in-mold injection molding) to ensure that they remain clearly readable even after prolonged use.
[0047] It should be noted that the unit of graduation line 22 can be set to milliliters (mL) or other suitable volume units according to actual needs, making it convenient for medical staff to quickly read the amount of drainage fluid. Through graduation line 22, medical staff can observe the changes in the volume of drainage fluid in real time without opening the collection bag 2, which facilitates timely judgment of the patient's condition progression.
[0048] like Figure 1 and Figure 2 As shown, in some embodiments of the medical drainage ball 10, the bottom of the collection bag 2 is provided with several positioning posts 23, and each positioning post 23 is provided with a positioning hole 231.
[0049] The medical drainage ball also includes a measurement and calibration component 5, which includes a calibration base 51 and several insertion posts 52. Each insertion post 52 is detachably inserted into each positioning hole 231, thereby defining the relative position of the calibration base 51 and the collection bag 2.
[0050] Understandably, the positioning post 23 is located at the bottom of the collection bag 2. The positioning post 23 is mainly used to provide physical support points and to fix the measurement calibration assembly 5. Each positioning post 23 has a positioning hole 231, which is used to match the insertion post 52 in the measurement calibration assembly 5, thereby realizing a detachable connection between the two.
[0051] It should be noted that the calibration base 51 serves a supporting function. The insertion post 52 is inserted into the positioning hole 231, which can position and support the collection bag 2. In this way, the collection bag 2 can be positioned by measuring the calibration component 5, which means that the collection bag 2 is in the correct orientation and position, so that medical staff can accurately read the volume of liquid in the collection bag 2.
[0052] like Figure 1 As shown, in some embodiments of the medical drainage ball 10, the measurement calibration component 5 also includes a level 53, and a clearance groove 511 is provided on the calibration base 51, with the level 53 disposed in the clearance groove 511.
[0053] Understandably, the level 53 is used to detect whether the medical drainage ball 10 is placed horizontally, ensuring that the drainage operation is performed in the correct posture. The level 53 is preferably a bubble level, which contains liquid and air bubbles; the horizontal state is determined by observing the position of the bubbles. A recess 511 is provided on the calibration base 51 to accommodate and fix the level 53. The shape and size of the recess 511 match the level 53, ensuring that the level 53 can be securely mounted on the calibration base 51.
[0054] like Figure 4 As shown, in some embodiments of the medical drainage ball 10, the discharge check valve 42 includes a valve body 421, a support frame 422, a valve core 423, and an elastic element 424. A limiting skirt 4211 is provided on the outer periphery of the valve body 421. The valve body 421 is inserted into the exhaust port 12, and the limiting skirt 4211 blocks the exhaust port 12. The support frame 422 is disposed inside the valve body 421, and a valve hole 4212 is opened inside the valve body 421. The valve core 423 is slidably disposed on the support frame 422 and passes through the valve hole 4212. The elastic element 424 is disposed on the support frame 422 and is drivenly connected to the valve core 423. The elastic element 424 is used to provide a force to drive the valve core 423 to slide and block the valve hole 4212. The valve body 421 is configured to move under the support of the fluid in the recuperative bladder 1, thereby opening the valve hole 4212.
[0055] Understandably, the valve body 421 is the main structure of the discharge check valve 42, and a limiting skirt 4211 is provided on its outer periphery. The valve body 421 is inserted into the exhaust port 12, and the limiting skirt 4211 is used to seal the exhaust port 12 to prevent gas or liquid from leaking from the gap between the valve body 421 and the exhaust port 12. The support frame 422 is used to support the valve core 423 and the elastic element 424. A channel can be opened on the support frame 422 to install the valve core 423, thereby ensuring that the valve core 423 can slide in a predetermined direction. The valve core 423 is used to control the opening and closing of the valve orifice 4212. The force provided by the elastic element 424 drives the valve core 423 to slide to seal the valve orifice 4212, ensuring that the valve orifice 4212 is in the closed state when no external force is applied.
[0056] It should be noted that when the retractable bladder 1 is not compressed, the force of the elastic element 424 drives the valve core 423 to slide and block the valve hole 4212, preventing external gas from entering the retractable bladder 1.
[0057] When the retractable bladder 1 is compressed, the internal gas pressure increases, pushing the valve body 421 to move. This causes the valve core 423 to slide against the force of the elastic element 424, thereby opening the valve orifice 4212. Gas is then discharged through the valve orifice 4212, completing the exhaust process.
[0058] When the retractable bladder 1 stops compressing and returns to its original shape, the internal gas pressure decreases, and the force of the elastic element 424 drives the valve core 423 to slide again and block the valve hole 4212, returning to the closed state.
[0059] In this way, the one-way valve 42 can ensure that gas can only be discharged from inside the retractable bladder 1 and cannot flow back in, thus maintaining the stability of the negative pressure environment.
[0060] like Figure 5 As shown, in some embodiments of the medical drainage ball 10, the one-way valve 41 includes a duckbill valve 43. The duckbill valve 43 includes a valve seat 431, two first closing lips 432 and two second closing lips 433. The valve seat 431 is disposed inside the suction port 11. The two first closing lips 432 are disposed opposite to each other on the valve seat 431. The two second closing lips 433 are disposed opposite to each other on the valve seat 431. The two first closing lips 432 and the two second closing lips 433 all face the retractor 1. The two first closing lips 432 and the two second closing lips 433 together form a one-way channel 434.
[0061] Understandably, the valve seat 431 is the base portion of the duckbill valve 43, fixedly disposed within the suction port 11. The shape and size of the valve seat 431 match the suction port 11, ensuring its secure installation within the suction port 11. Two first closing lips 432 are disposed opposite each other on the valve seat 431, forming the first layer of closure structure of the duckbill valve 43. The first closing lips 432 are made of flexible material and can open and close under pressure.
[0062] Two second closing lips 433 are disposed opposite to each other on the valve seat 431, forming the second closing structure of the duckbill valve 43. The second closing lips 433 are also made of flexible material and work together with the first closing lip 432 to enhance the sealing effect.
[0063] The two first closing lips 432 and the two second closing lips 433 together form a one-way channel 434. The design of the one-way channel 434 ensures that the liquid can only flow from the liquid guide tube 3 to the elastic capsule 1, and cannot flow in the opposite direction.
[0064] It should be noted that when the recoil bladder 1 recovers its deformation and generates negative pressure, the liquid in the liquid guide tube 3 pushes the first closing lip 432 and the second closing lip 433 open under the action of negative pressure, and the liquid flows into the recoil bladder 1 through the one-way channel 434. When the recoil bladder 1 stops exerting negative pressure or the liquid pressure disappears, the first closing lip 432 and the second closing lip 433 close under their own elasticity, preventing the liquid from flowing back from the recoil bladder 1 into the liquid guide tube 3.
[0065] It should be noted that the first closing lip 432 and the second closing lip 433 are made of medical-grade silicone or other flexible polymer materials to ensure that they have good elasticity and biocompatibility.
[0066] like Figure 1 and Figure 2 As shown, in some embodiments of the medical drainage ball 10, the inlet end 31 has several through holes 33 around its side wall, and each through hole 33 is evenly distributed around the side wall of the fluid guide tube 3.
[0067] Understandably, each through hole 33 is for fluid to pass through, that is, fluid can enter the liquid guide tube 3 through each through hole 33.
[0068] like Figure 2 As shown, in some embodiments of the medical drainage ball 10, an outlet column 24 is provided on the side wall of the collection bag 2, and the outlet column 24 is connected to the collection bag 2.
[0069] like Figure 2 and Figure 6 As shown, the medical drainage ball 10 also includes a sealing component 6, which includes an installation ring 61, a flexible connecting strip 62, and a plug 63. The installation ring 61 is sleeved on the outer wall of the outlet column 24. One end of the flexible connecting strip 62 is connected to the installation ring 61, and the other end of the flexible connecting strip 62 is connected to the plug 63. The plug 63 is detachably inserted into the outlet column 24 to seal the outlet column 24.
[0070] Understandably, the outlet column 24 is for draining the liquid from the collection bladder 2. The mounting ring 61 is designed to ensure that the sealing assembly 6 does not detach from the outlet column 24. The flexible connecting strip 62 is used to define the relative position of the plug 63 and the mounting ring 61, preventing the plug 63 from detaching. The plug 63 is used to seal the outlet column 24 when necessary.
[0071] like Figure 1 and Figure 2 As shown, in some implementations of the medical drainage ball 10, the recuperative bag 1 and the collection bag 2 are integrally formed structures.
[0072] Understandably, the integral molding of the elastic recoil capsule 1 and the collection capsule 2 can improve the connection strength between the two, prevent cracking at the connection point, and improve the durability of the product.
[0073] like Figure 3 As shown, in some embodiments of the medical drainage ball 10, the medical drainage ball also includes a threaded connection assembly 7. The threaded connection assembly 7 includes a first connecting ring 71 and a second connecting ring 72. The first connecting ring 71 is disposed on the retractable sac 1, and the second connecting ring 72 is disposed on the collection sac 2. The first connecting ring 71 and the second connecting ring 72 are threadedly connected, thereby the retractable sac 1 communicates with the collection sac 2.
[0074] Understandably, the threaded connection assembly 7 is used to connect the retractable bladder 1 and the collection bladder 2. The first connecting ring 71 and the retractable bladder 1 can be configured to be integrally molded together. The second connecting ring 72 and the collection bladder 2 can also be configured to be integrally molded together. One of the first connecting ring 71 and the second connecting ring 72 is configured to have an internal thread, and the other of the first connecting ring 71 and the second connecting ring 72 is configured to have an external thread, thus achieving the threaded connection between the first connecting ring 71 and the second connecting ring 72.
[0075] like Figure 1 and Figure 3 As shown, in some embodiments of the medical drainage ball 10, the volumes of both the recuperative bag 1 and the collection bag 2 can be flexibly set.
[0076] Understandably, the volume of the recoil bladder 1 is configured to be equal to the volume of the collection bladder 2, the volume of the recoil bladder 1 can be configured to be greater than the volume of the collection bladder 2, and the volume of the recoil bladder 1 can be configured to be less than the volume of the collection bladder 2.
[0077] The following are the beneficial effects of implementing this utility model:
[0078] This utility model relates to a medical drainage ball, which, through the integrated design of the recuperative and collection balloons and the one-way valve control mechanism of the negative pressure component, achieves automated and continuous drainage operation. Medical staff only need to perform simple operations of compressing and releasing the recuperative balloon to complete the drainage process, without the need for frequent disassembly and assembly of tube-blocking components or folding of the tube to form a blockage, thus significantly reducing operational complexity and the possibility of human error.
[0079] Furthermore, the inlet and outlet check valves in the negative pressure assembly control the drainage and venting processes respectively, ensuring unidirectional flow of fluids (gas and liquid) and preventing backflow. This effectively reduces the risk of infection due to liquid backflow or gas contamination, improving surgical safety.
[0080] The present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to the present invention. Furthermore, it is understood that the steps in the method of the present invention embodiments can be adjusted, combined, and deleted according to actual needs, and the modules in the device of the present invention embodiments can be combined, divided, and deleted according to actual needs.
[0081] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
Claims
1. A medical drainage ball, characterized in that, include: The retractable capsule is equipped with an intake port and an exhaust port. A collection bladder, the sidewall of which is connected to the sidewall of the retractable bladder, and the collection bladder communicates with the interior of the retractable bladder through a connecting channel; A liquid guide tube has an inlet end and an outlet end, the outlet end being connected to the suction port; and The negative pressure assembly includes an inlet check valve and an outlet check valve. The inlet check valve is disposed in the suction port or the liquid guide tube, and the outlet check valve is disposed in the exhaust port. When the recoil bladder is compressed and its volume decreases, the inlet one-way valve closes and the outlet one-way valve opens, so that the gas in the recoil bladder is discharged through the outlet one-way valve; when the recoil bladder retracts and its volume increases, the inlet one-way valve opens and the outlet one-way valve closes, so that a negative pressure is formed in the liquid guide tube to draw in fluid through the suction port, and then the fluid is introduced into the recoil bladder and flows into the collection bladder.
2. The medical drainage ball according to claim 1, characterized in that, The outer wall of the collection capsule is provided with several scale lines.
3. The medical drainage ball according to claim 2, characterized in that, The bottom of the collection bag is provided with several positioning posts, and each positioning post is provided with a positioning hole. The medical drainage ball also includes a measurement and calibration component, which includes a calibration base and several insertion posts. Each insertion post is detachably inserted into each of the positioning holes, thereby defining the relative position of the calibration base and the collection bag.
4. The medical drainage ball according to claim 3, characterized in that, The measurement calibration component also includes a level, and the calibration base has a clearance groove, in which the level is disposed.
5. The medical drainage ball according to claim 1, characterized in that, The discharge check valve includes a valve body, a support frame, a valve core, and an elastic element. A limiting skirt is provided on the outer periphery of the valve body. The valve body is inserted into the exhaust port, and the limiting skirt blocks the exhaust port. The support frame is disposed in the valve body, and a valve hole is opened in the valve body. The valve core is slidably disposed on the support frame and passes through the valve hole. The elastic element is disposed on the support frame and is drivenly connected to the valve core. The elastic element is used to provide a force to drive the valve core to slide and block the valve hole. The valve body is configured to move under the support of the fluid in the plenum, thereby opening the valve hole.
6. The medical drainage ball according to claim 1, characterized in that, The inlet one-way valve includes a duckbill valve, which includes a valve seat, two first closing lips and two second closing lips. The valve seat is disposed inside the inlet. The two first closing lips are disposed opposite to each other on the valve seat, and the two second closing lips are disposed opposite to each other on the valve seat. The two first closing lips and the two second closing lips all face the retractable bladder, and the two first closing lips and the two second closing lips together form a one-way channel.
7. The medical drainage ball according to claim 1, characterized in that, The inlet end has several through holes along its circumference, and each through hole is evenly distributed around the circumference of the side wall of the liquid guide tube.
8. The medical drainage ball according to claim 1, characterized in that, An outlet column is provided on the side wall of the collection bladder, and the outlet column is connected to the collection bladder; The medical drainage ball also includes a sealing component, which includes an installation ring, a flexible connecting strip, and a plug. The installation ring is sleeved on the outer wall of the outlet column. One end of the flexible connecting strip is connected to the installation ring, and the other end of the flexible connecting strip is connected to the plug. The plug is detachably inserted into the outlet column to seal the outlet column.
9. The medical drainage ball according to claim 1, characterized in that, The recoil capsule and the collection capsule are integrally formed.
10. The medical drainage ball according to claim 1, characterized in that, The medical drainage ball also includes a threaded connection assembly, which includes a first connecting ring and a second connecting ring. The first connecting ring is disposed on the retractable sac, and the second connecting ring is disposed on the collection sac. The first connecting ring and the second connecting ring are threadedly connected, so that the retractable sac communicates with the collection sac.