Bladder irrigation drainage device capable of preventing backflow

Abstract

The invention provides a bladder irrigation drainage device capable of preventing backflow, and belongs to the technical field of medical instruments. Comprising a drainage tube, one end of the drainage tube is fixedly connected with a water bag, the other end of the drainage tube is fixedly connected with a liquid outlet, a penetrating assembly is inserted into the drainage tube, the penetrating assembly is used for assisting the drainage tube in entering the bladder, and the penetrating assembly is connected with the drainage tube; the expansion assembly is used for assisting the drainage tube in being inserted into the bladder and preventing the drainage tube from being blocked, and the expansion assembly is connected with the drainage tube. Through the arrangement of the insertion assembly and the expansion assembly, the insertion assembly can guide implantation, the implantation success rate of the drainage tube is increased, and the implantation difficulty of medical staff for a patient suffering from urethral obstruction is reduced; the expansion assembly can flexibly expand the narrow part of the male urethra, and when the drainage tube is blocked in the indwelling process, blood clots or floccules are squeezed out, and smooth urination is kept.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a bladder flushing and drainage device capable of preventing backflow. Background Art

[0002] Bladder irrigation and drainage is a common medical operation. Usually, a urinary catheter is used with a drainage bag to prevent backflow and to perform catheterization irrigation on the patient. The irrigation and injection port of a three-lumen urinary catheter is used for bladder irrigation or drug infusion. The water injection hard valve of the three-lumen urinary catheter is used to inject sterile water to inflate the water balloon and fix it at the bladder neck. The top of the traditional urinary catheter adopts a "bullet-shaped head" structure that is 2 to 3 cm higher than the balloon, causing the top wall of the bladder to be continuously compressed and stimulated by the structure, resulting in severe mucosal trauma to the top wall of the bladder only in the area that can be touched by the bullet-shaped head structure at the top of the catheter.

[0003] In order to solve the above problems, open-ended catheters with flat balloon tops are now available on the market to effectively avoid bladder mucosal damage. When the catheter is blocked, the guide tube is inserted to the end for unblocking. However, for male urethra, which is long and narrow, catheterization is difficult and can easily cause urinary tract infection. In addition, some patients will have macroscopic hematuria accompanied by blood clots, which can easily block the catheter when passing through it, and the accumulation of sediment in the urine may cause catheter blockage. Catheter blockage may cause bladder spasm, manifested as perineal pain, discomfort accompanied by urine leakage. Catheter blockage may cause urine leakage, and the patient may feel pain and discomfort. Therefore, based on the above problems, the present invention provides a bladder flushing and drainage device to prevent backflow to meet the needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a bladder flushing and drainage device for preventing backflow by setting an insertion component and an expansion component. The insertion component can not only guide the insertion, improve the success rate of drainage tube insertion, and reduce the difficulty of insertion for medical staff of patients with urethral obstruction, but also the medical staff can pull the expansion bag from one end of the drainage tube to the inside of the drainage tube by hand; the expansion component can not only flexibly expand the narrow part of the male urethra to reduce the discomfort during insertion, but also when the drainage tube encounters blockage during the retention process, the blood clot or flocculent material can be discharged through the cooperation of the airbag and the expansion bag to keep urination unobstructed. The above settings can solve the problems of long and narrow male urethra, difficulty in catheterization, and easy urinary tract infection, and some patients will have macroscopic hematuria accompanied by blood clots, and the blood clots are easy to block the catheter when passing through the catheter, and the accumulation of sediment in the urine may cause catheter blockage.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A bladder flushing and drainage device for preventing backflow comprises a drainage tube, one end of the drainage tube is fixedly connected to a water bag, the other end of the drainage tube is fixedly connected to a liquid outlet, an insertion component is inserted into the interior of the drainage tube, the insertion component is used to assist the drainage tube to enter the bladder, and the insertion component is connected to the drainage tube; an expansion component is used to assist the drainage tube to be inserted into the bladder and prevent the drainage tube from being blocked, and the expansion component is connected to the drainage tube.

[0007] Optionally, the expansion component includes an expansion bag fixedly connected to one end of the drainage tube near the water bag, one end of the expansion bag is fixedly connected with evenly distributed point-break connection points, and the free end of the point-break connection point is fixedly connected with an interlaced component.

[0008] Optionally, the insertion component includes a probe fixedly connected to one end of the expansion sac via the point-break connection point, the point-break connection point separates the expansion sac and the probe by applying external force, one end of the probe is fixedly connected to a guide tube, and the free end of the guide tube extends to the liquid outlet.

[0009] Optionally, a water injection hard valve and a flushing and drug injection port are respectively provided on both sides of the liquid outlet, and a urine drainage channel, a water bag water injection channel and an expansion bag inflation channel are provided through the center of the drainage tube.

[0010] Optionally, an airbag is fixedly sleeved on one end of the drainage tube close to the liquid outlet, and the airbag passes through the inflation channel of the expansion bag to the interior of the expansion bag.

[0011] Optionally, the outer wall size of the expansion bag in a non-inflated state matches the inner wall size of the urine drainage channel.

[0012] Optionally, the water injection hard valve passes through the water bag water injection channel to the interior of the water bag.

[0013] Optionally, the drainage tube, the water bag, the liquid outlet, the water injection hard valve, the flushing and injection port, the expansion bag and the air bag are an integrated manufacturing structure and are all made of imported medical silicone.

[0014] Optionally, the outer wall size of the probe is smaller than the inner wall size of the urine drainage channel, and the outer wall size of the guide tube is smaller than the outer wall size of the probe.

[0015] Optionally, the thickness of the water bag is smaller than the thickness of the drainage tube, and the thickness of the expansion bag is smaller than the thickness of the water bag.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above scheme, by setting an insertion component and an expansion component, the insertion component and the expansion component are respectively arranged inside and at the insertion end of the drainage tube. The insertion component can not only guide the insertion, improve the success rate of drainage tube insertion, and reduce the difficulty of insertion for medical staff of patients with urethral obstruction, but also the medical staff can pull the expansion bag from one end of the drainage tube to the inside of the drainage tube by hand; the expansion component can not only flexibly expand the narrow part of the male urethra to reduce the discomfort during insertion, but also when the drainage tube encounters blockage during the retention process, the blood clot or flocculent material can be expelled through the cooperation of the airbag and the expansion bag to keep urination unobstructed. Compared with inserting the guide tube into the insertion end of the drainage tube for dredging, the cooperation of the expansion component and the airbag is more convenient and simple to operate, so that the drainage tube will not cause pain and discomfort to the patient due to untimely dredging during the retention process, and the patient can use the airbag for dredging independently during actual use, thereby ensuring the comfort and convenience of the patient's indwelling catheter and reducing the possibility of urinary tract injury and urinary tract infection.

[0018] By setting up an expansion bag, the overall contour of the expansion bag is a double-layer circular ring structure. During the process of inserting the drainage tube, when passing through the narrow urethra, the medical staff can pinch the air bag by hand to inflate the expansion bag cavity, so that the urethra is flexibly expanded before continuing to insert the tube, reducing the severe pain caused by rigid and violent insertion. Moreover, after the expansion bag is separated from the probe, the expansion bag is tightly attached to the inner wall of the urine drainage channel, and the expansion bag does not protrude from the water bag. When encountering a blood clot blockage, the expansion bag cavity is switched back and forth between the inflated and expanded state and the deflated and contracted state by cooperating with the air bag, so that the blood clots and flocs blocking the end can be squeezed away, thereby achieving the purpose of smooth urination.

[0019] By setting up a guide tube, the drainage tube can be inserted with the help of the guide tube during the process of medical staff inserting the drainage tube, thereby improving the success rate of drainage tube insertion. When the drainage tube is inserted to the target position and fixed inside the bladder, the guide tube is pulled out from the liquid outlet. During the pulling process, the position of the expansion bag is changed, which facilitates the anti-blockage function of the expansion bag, reduces the patient's discomfort, and improves the comfort of bladder flushing.

[0020] By setting a point-break connection point and utilizing a connection method of the point-break connection point that facilitates separation of the two with the aid of external force, the two ends of the point-break connection point are respectively connected to the probe and the dilation bag. While the guide tube is pulled outward, the dilation bag first contracts inward to fit closely to the inner wall of the urine drainage channel. As the external force continues, the point-break connection point is disconnected, separating the probe and the dilation bag, thereby ensuring that the dilation bag can change its position smoothly and realize the function of preventing blockage. Not only is the structure simple and ingenious, but the actual operation is also convenient and labor-saving.

[0021] By setting up the inflation channels of the airbag and the dilation bag, the airbag passes through the inflation channels of the dilation bag to the inside of the dilation bag. The airbag and the dilation bag cooperate in three states: when inserting the drainage tube, lightly pinch the airbag when encountering a narrow urethra, so that the dilation bag expands slightly to achieve the purpose of flexible dilation of the urethra; when the drainage tube is blocked, the airbag is pinched and loosened to expand and contract the dilation bag cavity, thereby discharging the blockage. To prevent backflow, pinch the airbag and hold it, so that the dilation bag expands and blocks the drainage tube, preventing urine backflow and reducing the chance of urinary tract infection. In addition, the drainage tube, dilation bag and airbag are an integrated manufacturing structure. Such a setting makes the processing technology of the three simpler during the production process, easier to produce, and reduces the manufacturer's capital investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of a bladder irrigation and drainage device in the first state for preventing backflow;

[0024] Figure 2 A schematic diagram of the three-dimensional structure of the bladder irrigation and drainage device in the second state for preventing backflow;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the guide tube and the probe;

[0026] Figure 4 It is a schematic cross-sectional view of the structure of the water bladder cavity expanding after water injection in the unseparated state of the interpenetrating component;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the interlaced component and the expansion component;

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of the water bag and the expansion bag during implantation;

[0029] Figure 7 This is a schematic diagram of the cross-sectional structure of the water sac and the expansion sac during implantation;

[0030] Figure 8 A schematic diagram of the cross-sectional structure of the water bladder cavity expanding after water injection in a state where the interpenetrating component is separated from the other side;

[0031] Fig. 9 for Figure 8 The enlarged cross-sectional structure diagram at A in the middle;

[0032] Fig.10 A schematic cross-sectional structure diagram from a second perspective of the water bladder cavity expanding after water injection in a state where the interpenetrating assembly is separated;

[0033] Fig.11 for Fig.10 Enlarged cross-sectional view of the structure at B in the middle

[0034] Fig.12 It is a schematic diagram of the cross-sectional structure of the water sac cavity expanding after water is injected and the expansion sac is expanded;

[0035] Fig.13 for Fig.12 The enlarged cross-sectional structure diagram at point C in the middle.

[0036] Reference numerals:

[0037] 1. Drainage tube; 101. Urine drainage channel; 102. Water bag water injection channel; 103. Expansion bag inflation channel; 2. Water bag; 201. Water bag cavity; 3. Liquid outlet; 301. Water injection hard valve; 302. Flushing and injection port; 4. Air bag; 5. Expansion bag; 501. Expansion bag cavity; 6. Probe; 601. Point-break connection point; 7. Guide tube.

[0038] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0039] The following is a detailed description of a bladder flushing and drainage device for preventing backflow provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0040] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0041] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0042] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0043] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0044] like Figures 1 to 13As shown, an embodiment of the present invention provides a bladder flushing and drainage device for preventing backflow, comprising a drainage tube 1, one end of the drainage tube 1 is fixedly connected to a water bag 2, the other end of the drainage tube 1 is fixedly connected to a liquid outlet 3, an insertion component is inserted into the interior of the drainage tube 1, the insertion component is used to assist the drainage tube 1 to enter the bladder, and the insertion component is connected to the drainage tube 1; an expansion component, the expansion component is used to assist the drainage tube 1 to insert into the bladder and prevent the drainage tube 1 from being blocked, and the expansion component is connected to the drainage tube 1. The bladder flushing and drainage device for preventing backflow provided by the present invention is suitable for medical staff to solve the problem of urination for patients who cannot discharge urine normally, and need to drain the drainage tube The tube 1 is inserted into the bladder along the patient's urethra, and then the water bag 2 is expanded and fixed at the bladder neck by injecting sterile water, and is connected to the drainage bag at the liquid outlet 3. The drainage bag is used to collect urine and has a certain elasticity and sealing performance. The existing anti-reflux drainage bag is provided with multiple mechanisms. A valve is provided at the outlet of the anti-reflux drainage bag. This valve is usually composed of two or more sheet structures, and the interface connecting the drainage tube 1 and the drainage bag is usually a one-way valve, which can only allow liquid or gas to flow from the body to the drainage bag, but not reverse flow, which can ensure the one-way flow of liquid and prevent backflow, thereby reducing the risk of infection and keeping the drainage system clean and safe.

[0045] The working principle of the anti-backflow drainage bag in the present invention is disclosed as a prior art and therefore will not be described in detail. By setting an insertion component and an expansion component, the insertion component and the expansion component are respectively arranged inside and at the insertion end of the drainage tube 1. The insertion component can not only guide the insertion, improve the success rate of the insertion of the drainage tube 1, and reduce the difficulty of insertion for medical staff of patients with urethral obstruction, but also the medical staff can pull the expansion bag 5 from one end of the drainage tube 1 to the inside of the drainage tube 1 by hand; the expansion component can not only flexibly expand the narrow part of the male urethra to reduce the discomfort during insertion, but also when the drainage tube If blockage is encountered during the indwelling process, the blood clot or floccules can be expelled through the cooperation of the airbag 4 and the expansion bag 5 to keep urination unobstructed. Compared with inserting the guide tube 7 into the insertion end of the drainage tube 1 for dredging, the cooperation of the expansion component and the airbag 4 is more convenient and simple to operate, so that the drainage tube 1 will not cause pain and discomfort to the patient due to untimely dredging during the indwelling process, and the patient can use the airbag 4 to dredge independently during actual use, thereby ensuring the comfort and convenience of the patient's indwelling catheter and reducing the possibility of urinary tract injury and urinary tract infection.

[0046] like Figures 1 to 13 As shown, the expansion assembly includes an expansion bag 5 fixedly connected to one end of the drainage tube 1 near the water bag 2, and one end of the expansion bag 5 is fixedly connected with evenly distributed point-break connection points 601 (such as Figure 5As shown in FIG. 1 ), the free end of the point-break connection point 601 is fixedly connected with an insertion component. Since the male urethra is narrow and long, and there are local narrow parts inside the urethra, when a narrow part is encountered during the insertion process, the air bag 4 is gently squeezed to make the expansion bag 5 slightly expand, as shown in FIG. Figure 6 and Figure 7 As shown, in order to achieve the purpose of flexible urethral expansion, the expansion bag 5 is arranged at the insertion end of the drainage tube 1, and the interior of the drainage tube 1 is penetrated by an expansion bag inflation channel 103 and is connected with the air bag 4. By gently squeezing the air bag 4, the air is discharged into the expansion bag cavity 501, thereby achieving the expansion effect of the expansion bag 5, so that the urethra is flexibly expanded and then inserted, reducing the severe pain caused by rigid and violent insertion.

[0047] When the drainage tube 1 is placed in a suitable position, the water bag 2 is inflated with a syringe to fix the drainage tube 1. After the water bag 2 is filled with water and expanded and fixed, the guide tube 7 is pulled out from the liquid outlet 3. While the guide tube 7 is pulled outward, the expansion bag 5 is first contracted inward to be close to the inner wall of the urine drainage channel 101. Figure 4 As shown, with the continuation of the external force, the point-break connection point 601 is disconnected, so that the probe 6 and the expansion capsule 5 are separated, as shown in FIG. Figure 8 As shown, it is ensured that the expansion balloon 5 can change its position smoothly.

[0048] Some patients may have visible hematuria accompanied by blood clots, which may easily block the catheter when passing through it, or the accumulation of floccules in the urine may also cause urethral obstruction. By squeezing and releasing the airbag 4, the expansion chamber 501 is expanded and contracted. Figure 8 He Ru Fig.12 As shown, the blockage is squeezed out, and the anti-blockage function of the expansion bag 5 is convenient to realize, and the patient's discomfort is alleviated. By setting the expansion bag 5, the overall contour of the expansion bag 5 is a double-layer circular ring structure. When the medical staff inserts the drainage tube 1, through the narrow urethra, they pinch the air bag 4 by hand to inflate the expansion bag cavity 501, so that the urethra is flexibly expanded before continuing to insert, reducing the severe pain caused by rigid and violent insertion. Moreover, after the expansion bag 5 is separated from the probe 6, the expansion bag 5 is tightly attached to the inner wall of the urine drainage channel 101, and the expansion bag 5 does not protrude from the water bag 2. When encountering a blood clot blockage, the expansion bag 4 cooperates with the expansion bag cavity 501 to switch back and forth between the inflation and deflation states, which is convenient for squeezing out the blood clots and flocs blocking the end, so as to achieve the purpose of smooth urination.

[0049] In this embodiment, if Figures 3 to 9 As shown, the insertion assembly includes a probe 6 fixedly connected to one end of the expansion capsule 5 through a point-break connection point 601, as shown in FIG. Figure 5As shown, the point-break connection point 601 separates the expansion bag 5 and the probe 6 by applying external force. One end of the probe 6 is fixedly connected to the guide tube 7, and the free end of the guide tube 7 extends to the liquid outlet 3. Since the point-break connection can be disconnected quickly and cleanly, and the point-break connection point 601 is easy to disconnect, the medical staff can quickly operate to connect the drainage tube 1 to the drainage bag, which saves time to the maximum extent and reduces the patient's discomfort. The hardness of the guide tube 7 is larger than that of the drainage tube 1. The guide tube 7 is used to assist the medical staff to insert the drainage tube 1 into the patient's urethra, which is convenient for guiding and inserting. The free end of the guide tube 7 is fixedly connected to a pipe fitting that matches the inner wall shape of the liquid outlet 3, such as Figure 3 The hollow arrangement of the pipe is convenient for the finger to exert force when pulling out the guide tube 7. By providing the guide tube 7, the medical staff can insert the drainage tube 1 with the help of the guide tube 7, thereby improving the success rate of the insertion of the drainage tube 1.

[0050] When inserted into the target position and fixed inside the bladder, the guide tube 7 is pulled out from the liquid outlet 3. During the pulling process, the position of the expansion capsule 5 is changed to facilitate the anti-blocking function of the expansion capsule 5, reduce the patient's discomfort, and improve the comfort of bladder flushing. By setting a point-break connection point 601, the connection method of the point-break connection point 601 is used to facilitate the separation of the two with the help of external force. The two ends of the point-break connection point 601 are respectively connected to the probe 6 and the expansion capsule 5. While the guide tube 7 is pulled outward, the expansion capsule 5 first contracts inward to fit closely to the inner wall of the urine drainage channel 101. As the external force continues, the point-break connection point 601 is disconnected, so that the probe 6 and the expansion capsule 5 are separated, ensuring that the expansion capsule 5 can change its position smoothly and realize the function of preventing blockage. It is not only simple and ingenious in structure, but also convenient and labor-saving in actual operation.

[0051] In this embodiment, if Figures 1 to 10 As shown, a water injection hard valve 301 and a flushing injection port 302 are respectively provided on both sides of the liquid outlet 3, and a urine drainage channel 101, a water bag water injection channel 102 and an expansion bag inflation channel 103 are provided at the center of the drainage tube 1. Fig.10 As shown; one end of the drainage tube 1 near the liquid outlet 3 is fixedly connected with an air bag 4, as Figure 1 and Figure 2 As shown, the airbag 4 is connected to the inside of the expansion bag 5 through the expansion bag inflation channel 103, and the water injection hard valve 301 is connected to the inside of the water bag 2 through the water bag water injection channel 102. Figure 7 As shown, the water injection hard valve 301 expands the water bag 2 by injecting physiological saline or sterile water into the water bag injection channel 102, as shown in FIG. Figure 2As shown, to ensure that the drainage tube 1 is fixed in the correct position and prevent the drainage tube 1 from sliding or shifting during use, the urine drainage channel 101 is the main chamber, responsible for transmitting urine out of the bladder, the interior of the urine drainage channel 101 is smooth to reduce the resistance to urine and ensure that urine can flow smoothly, the flushing injection port 302 is the third chamber in the drainage tube 1, it is used to infuse drugs or liquids into the bladder for treatment or flushing, this chamber can be connected to saline for flushing, and the external saline is flushed into the bladder. After flushing, it is led out of the body through the drainage cavity.

[0052] like Figure 1 and Figure 2 As shown, the working principle of the three-lumen urinary catheter in the present invention is disclosed as a prior art and therefore will not be described in detail. By setting up an independent drainage cavity urine channel of the three-lumen urinary catheter, urine can be effectively drained from the bladder to prevent catheter blockage. It is particularly suitable for patients with long-term indwelling catheterization and also suitable for patients who need continuous bladder irrigation. By flushing the injection port 302, water or therapeutic drugs can be regularly injected into the bladder to clean the bladder and prevent blood clots from forming in the bladder, thereby preventing catheter blockage, maintaining unobstructed drainage, cleaning the bladder, performing special treatments, preventing catheter blockage, etc., thereby improving the treatment effect and patient comfort, while reducing the risk of infection.

[0053] In this embodiment, if Figures 4 to 13 As shown, the outer wall size of the probe 6 is smaller than the inner wall size of the urine drainage channel 101, the outer wall size of the guide tube 7 is smaller than the outer wall size of the probe 6, and the outer wall size of the expansion bag 5 in the non-inflated state is consistent with the inner wall size of the urine drainage channel 101, as shown in FIG. Figure 4 and Figure 8 As shown; the thickness of the water bag 2 is less than the thickness of the drainage tube 1, as Fig.10 and Fig.11 The thickness of the expansion sac 5 is less than the thickness of the water sac 2, as shown in FIG. Fig.12 and Fig.13 As shown; the drainage tube 1, the water bag 2, the liquid outlet 3, the water injection hard valve 301, the flushing injection port 302, the expansion bag 5 and the air bag 4 are an integrated manufacturing structure, and are all made of imported medical silicone material, such as Figure 1 and Figure 2 As shown;

[0054] The probe 6 is connected to the guide tube 7 inside the urine drainage channel 101. The outer wall size of the probe 6 is smaller than the inner wall size of the urine drainage channel 101, so that the probe 6 and the guide tube 7 can be easily pulled out. The thinner water bag 2 and the expansion bag 5 can fit the bladder neck more softly after being filled, reducing the pressure on the bladder wall, thereby reducing the patient's discomfort. The thinner water bag 2 is more easily filled with the injected liquid (such as saline) and can be emptied faster when it needs to be emptied, which helps to quickly fix or remove the catheter. The water bag 2 and the expansion bag 5 are thinner in order to improve the patient's comfort, reduce the risk of infection, and facilitate operation and monitoring by medical staff while ensuring their functionality.

[0055] The bladder flushing and drainage device of the present invention adopts an integrated design to ensure a compact structure and reliable durability, which helps to ensure that when the cleaning solution is injected into the patient's bladder through a syringe, leakage of the medicine solution is avoided, hygiene is guaranteed and the flushing solution is prevented from being wasted, and the multi-functions of excretion drainage, cleaning and inflation of the water bag 2 are realized, as well as multi-channel operation. One of the lumens can be used alone, or multiple lumens can be used for synchronous operation. The integrated manufacturing process can improve production efficiency, reduce assembly links, and reduce production costs. In addition, the imported medical silicone material is relatively soft, has little stimulation to the urethra, and reduces the patient's foreign body sensation and discomfort. The surface of the silicone drainage tube 1 is smooth, has little damage to the urethral mucosa and stimulation reaction, is non-sticky, and can reduce adhesion. By setting the air bag 4 and the expansion bag inflation channel 103, the air bag 4 passes through the expansion bag inflation channel 103 to the inside of the expansion bag 5. The air bag 4 and the expansion bag 5 cooperate in three states: when the drainage tube 1 is inserted, the air bag 4 is lightly pinched when encountering a narrow urethra, so that the expansion bag 5 is slightly expanded to achieve the purpose of flexible expansion of the urethra, such as Figure 6 and Figure 7 As shown; when the drainage tube 1 is blocked, the expansion bag cavity 501 is expanded and contracted by pinching and releasing the air bag 4, so that the blockage is discharged. To prevent backflow, the air bag 4 is pinched and held, and the expansion bag 5 expands to block the drainage tube 1, preventing urine backflow and reducing the chance of urinary tract infection. In addition, the drainage tube 1, the expansion bag 5 and the air bag 4 are an integrated manufacturing structure. This arrangement makes the processing technology of the three simpler during the production process, easier to be manufactured, and reduces the manufacturer's capital investment.

[0056] The workflow of the technical solution of the present invention is as follows:

[0057] When in use, an expansion bag 5 is arranged at the insertion end of the drainage tube 1, and an air bag 4 is arranged at a position of the drainage tube 1 near the liquid outlet 3. Through the through-cooperation between the air bag 4 and the expansion bag 5, the medical staff can control the expansion bag 5 by adjusting the air bag 4. After the drainage tube 1 and the drainage bag are installed, the expansion bag 5 is closely attached to the inner wall of the drainage urine channel 101. The expansion bag 5 expands to fill the drainage urine channel 101, and the effect of closing the drainage urine channel 101 can be achieved, thereby preventing backflow. Specifically, before use, the medical staff first inserts the drainage tube 1 into the male The patient's urethra is narrow and long, and there may be local narrow parts inside the urethra. When encountering a narrow position during the insertion process, the airbag 4 is gently squeezed to make the expansion bag 5 slightly expand, so as to achieve the purpose of flexible expansion of the urethra. The expansion bag 5 is arranged at the insertion end of the drainage tube 1. The interior of the drainage tube 1 is penetrated by an expansion bag inflation channel 103 and is connected with the airbag 4. By gently squeezing the airbag 4, the air is discharged into the expansion bag cavity 501, thereby achieving the expansion effect of the expansion bag 5, so that the urethra is flexibly expanded before continuing to be inserted, reducing the severe pain caused by rigid and violent insertion.

[0058] When the drainage tube 1 is placed in a suitable position, the water bag 2 is inflated with a syringe to fix the drainage tube 1. After the water bag 2 is filled with water to expand and fix it, the guide tube 7 is pulled out from the liquid outlet 3. While the guide tube 7 is pulled outward, the expansion bag 5 is first contracted inward to fit closely to the inner wall of the urine drainage channel 101. With the continuation of the external force, the point-break connection point 601 is disconnected, so that the probe 6 and the expansion bag 5 are separated, ensuring that the expansion bag 5 can change its position smoothly. Then the liquid outlet 3 is connected with the drainage bag to facilitate urine collection. For some patients, there will be macroscopic hematuria accompanied by blood clots. The blood clots will pass through the guide tube. The urethra is easily blocked when the catheter is inserted, or the accumulation of flocs in the urine may also cause urethral blockage. By squeezing and loosening the air bag 4, the expansion bag cavity 501 is expanded and contracted, thereby squeezing out the blockage, facilitating the anti-blockage function of the expansion bag 5 and alleviating the patient's discomfort. When the patient's bladder needs to be flushed and drained, the drainage tube 1 on the drainage bag is first clamped, and the flushing liquid is infused through the flushing injection port 302. After a certain amount of infusion, the drainage tube 1 is opened and the flushing liquid flows out. This is repeated, and the liquid in the bladder is drained out using the siphon principle, thereby improving the comfort of bladder flushing.

[0059] The airbag 4 and the expansion bag 5 cooperate in three states: when the drainage tube 1 is inserted, the airbag 4 is gently squeezed when encountering a narrow urethra, so that the expansion bag 5 is slightly expanded to achieve the purpose of flexible expansion of the urethra; when the drainage tube 1 is blocked, the expansion bag cavity 501 is expanded and contracted by squeezing and loosening the airbag 4, thereby discharging the blockage. To prevent backflow, the airbag 4 is pinched and held, and the expansion bag 5 is expanded to block the drainage tube 1, preventing urine backflow and reducing the chance of urinary tract infection. Not only is the structure simple and ingenious, but the actual operation is convenient and labor-saving. In addition, the drainage tube 1, the expansion bag 5 and the airbag 4 are an integrated manufacturing structure. Such a setting makes the processing technology of the three simpler during the production process, easier to be manufactured, and reduces the manufacturer's capital investment.

[0060] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0061] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A bladder flushing and drainage device for preventing backflow, comprising a drainage tube, characterized in that: One end of the drainage tube is fixedly connected to a water bag, the other end of the drainage tube is fixedly connected to a liquid outlet, an insertion component is inserted into the interior of the drainage tube, the insertion component is used to assist the drainage tube to enter the bladder, and the insertion component is connected to the drainage tube; An expansion component is used to assist the drainage tube in being inserted into the bladder and to prevent the drainage tube from being blocked. The expansion component is connected to the drainage tube.

2. The bladder irrigation and drainage device for preventing backflow according to claim 1, characterized in that: The expansion component includes an expansion bag fixedly connected to one end of the drainage tube close to the water bag, one end of the expansion bag is fixedly connected with evenly distributed point-break connection points, and the free end of the point-break connection point is fixedly connected with an interlaced component.

3. The bladder irrigation and drainage device for preventing backflow according to claim 2, characterized in that: The insertion component includes a probe fixedly connected to one end of the expansion bag through the point-break connection point, and the point-break connection point separates the expansion bag and the probe by applying external force. One end of the probe is fixedly connected to a guide tube, and the free end of the guide tube extends to the liquid outlet.

4. The bladder irrigation and drainage device for preventing backflow according to claim 2, characterized in that: A water injection hard valve and a flushing and medicine injection port are respectively provided on both sides of the liquid outlet, and a urine drainage channel, a water bag water injection channel and an expansion bag inflation channel are provided through the center of the drainage tube.

5. The bladder irrigation and drainage device for preventing backflow according to claim 2, characterized in that: An end of the drainage tube close to the liquid outlet is fixedly sleeved with an air bag, and the air bag passes through the inflation channel of the expansion bag to the interior of the expansion bag.

6. The bladder irrigation and drainage device for preventing backflow according to claim 2, characterized in that: The outer wall size of the expansion bag in a non-inflated state matches the inner wall size of the urine drainage channel.

7. The bladder irrigation and drainage device for preventing backflow according to claim 4, characterized in that: The water injection hard valve passes through the water bag water injection channel to the interior of the water bag.

8. The bladder irrigation and drainage device for preventing backflow according to claim 4, characterized in that: The drainage tube, the water bag, the liquid outlet, the water injection hard valve, the flushing and injection port, the expansion bag and the air bag are an integrated manufacturing structure, and are all made of imported medical silicone.

9. The bladder irrigation and drainage device for preventing backflow according to claim 3, characterized in that: The outer wall size of the probe is smaller than the inner wall size of the urine drainage channel, and the outer wall size of the guide tube is smaller than the outer wall size of the probe.

10. The bladder irrigation and drainage device for preventing backflow according to claim 2, characterized in that: The thickness of the water bag is smaller than the thickness of the drainage tube, and the thickness of the expansion bag is smaller than the thickness of the water bag.

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