A ureteral stone-blocking balloon that can reduce renal pelvis pressure

Abstract

This utility model discloses a ureteral stone-blocking balloon that can reduce renal pelvis pressure. It includes a catheter, one end of which is fixedly connected to an inflation tube, and the other end of the inflation tube is fixedly connected to a balloon. The balloon is fixedly connected to the other end of the catheter, and a connecting tube is provided on the inflation tube. The device is inserted through the patient's urethra, bladder, and ureter, moving the balloon portion above the ureteral stone. By connecting the connecting tube to an external inflation device and pushing the plug, the connecting tube is opened, allowing inflation of the balloon. The inflated balloon blocks the patient's ureter. Therefore, when the staff flushes ureteral stone fragments with a flushing solution, the balloon can block the kidney stone, preventing fragments from entering the kidney during flushing. Simultaneously, the catheter can effectively drain the fluid above the stone, preventing excessive renal pelvis pressure that could lead to bacterial reflux into the bloodstream and systemic infection.

Description

Technical Field

[0001] This utility model relates to the field of catheter technology, specifically to a ureteral stone-blocking balloon that can reduce renal pelvis pressure. Background Technology

[0002] Ureteral stones are a common disease in urology. To treat this condition, doctors typically use ureteroscopic lithotripsy, a surgical procedure that involves inserting a ureteroscope through the urethra and bladder into the ureter to break up and remove ureteral or kidney stones. However, during lithotripsy, the need for continuous irrigation can easily cause stones and fragments in the middle and upper ureter to reflux back into the renal pelvis or calyces, increasing the complexity of the procedure and even leading to failure. Therefore, an important method to prevent stones from refluxing into the kidneys is to use a device to block the area above the ureteral stone. Although some ureteral occlusion devices are available, they still have some drawbacks. Currently, most common ureteral occlusion devices are basket-shaped, and the aperture of the basket directly affects the interception effect of stone fragments. An aperture that is too large may allow small stone fragments to pass through the basket's opening into the renal pelvis and calyces, reducing the stone clearance rate and increasing the recurrence rate. Conversely, if the orifice is too small, it will affect the smooth flow of fluid, causing excessive irrigation fluid to be unable to flow smoothly out of the renal pelvis and calyces, increasing the pressure in the renal pelvis and calyces, and increasing the risk of bacteria reflux into the blood vessels, thereby increasing the probability of intraoperative and postoperative infection. Therefore, in order to solve the above problems, we need to design a ureteral stone-blocking balloon that can reduce renal pelvis pressure, effectively intercepting stone fragments and improving local fluid circulation to reduce the pressure in the renal pelvis and calyces. Utility Model Content

[0003] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0004] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0005] A ureteral stone-blocking balloon that can reduce renal pelvis pressure includes:

[0006] A catheter, one end of which is fixedly connected to an inflation tube, one end of which is fixedly connected to a balloon, the balloon being fixedly connected to the other end of the catheter, and a connecting tube being provided on the inflation tube.

[0007] As a preferred embodiment of the ureteral stone-blocking balloon that can reduce renal pelvis pressure according to the present invention, one side of the inflation tube is set as an air inlet, the other side of the inflation tube is set as an air outlet, the air outlet is fixedly connected to the balloon, and the connecting tube is located on the air inlet.

[0008] In a preferred embodiment of the ureteral stone-blocking balloon that can reduce renal pelvis pressure according to the present invention, the connecting tube is fixedly connected to the air inlet, and a plug is slidably connected in the connecting tube.

[0009] As a preferred embodiment of the ureteral stone-blocking balloon that can reduce renal pelvis pressure according to the present invention, one end of the catheter is fixedly connected to a drainage port, the other end of the catheter is provided with a water outlet, the side of the drainage port is provided with an anti-scratch layer, and a pressure sensor is provided at the water outlet.

[0010] As a preferred embodiment of the ureteral stone-blocking balloon that can reduce renal pelvis pressure according to the present invention, the catheter is provided with a placement groove, the inflation tube is provided with a protective sleeve, and the protective sleeve is fixedly connected to the placement groove.

[0011] As a preferred embodiment of the ureteral stone-blocking balloon that can reduce renal pelvis pressure according to this utility model, a fixing plate is fixedly connected to the connecting tube, a vent hole is provided on the fixing plate, a guide roller is fixedly connected to the fixing plate, and a spring is fixedly connected to the fixing plate.

[0012] As a preferred embodiment of the ureteral stone-blocking balloon that can reduce renal pelvis pressure according to the present invention, one end of the plug is provided with a groove, the other end of the plug is provided with a connecting groove, the guide roller is slidably connected in the connecting groove, and the other end of the spring is fixedly connected in the connecting groove.

[0013] Compared with existing technologies, the advantages of this invention are as follows: When using the device, the operator inserts it through the patient's urethra, bladder, and ureter, moving the balloon portion of the device above the ureteral stone (i.e., between the stone and the renal pelvis). It is then connected to an external inflation device via a connecting tube. Pushing the plug opens the connecting tube, allowing inflation of the balloon. Inflation through the connecting tube causes the balloon to inflate, blocking the ureter. This allows the balloon to effectively irrigate the kidney when the operator flushes away ureteral stone fragments with a flushing solution. The procedure intercepts the kidney stone, preventing fragments from entering the kidney during flushing. Simultaneously, the catheter effectively drains fluid above the stone, preventing excessive pressure in the renal pelvis that could lead to bacterial reflux into the bloodstream and systemic infection. Furthermore, when the balloon is used to block the kidney stone, the flushing fluid may seep from the balloon's sidewall into the renal pelvis due to the impact, causing excessive pressure and adverse effects on the patient. The drainage port guides the flushing fluid that has seeped in from the balloon's sidewall into the catheter and out through the outlet, preventing it from entering the renal pelvis and causing excessive internal pressure. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0015] Figure 1 This is a front view of the overall structure of the ureteral stone-blocking balloon that can reduce renal pelvis pressure according to this utility model.

[0016] Figure 2 This is an exploded view of the overall structure of the ureteral stone-blocking balloon that can reduce renal pelvis pressure according to this utility model.

[0017] Figure 3 This is a schematic diagram of the balloon in the ureteral stone-blocking balloon that can reduce renal pelvis pressure according to this utility model;

[0018] Figure 4 This is a schematic diagram of the connecting tube in a ureteral stone-blocking balloon that can reduce renal pelvis pressure according to this utility model;

[0019] Figure 5 This is a schematic diagram of the plug in a ureteral stone-blocking balloon that can reduce renal pelvis pressure according to this utility model;

[0020] Figure 6This is a schematic cross-sectional view of the connecting tube in a ureteral stone-blocking balloon that can reduce renal pelvis pressure according to this utility model. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0024] Please see Figures 1-5 This utility model provides a ureteral stone-blocking balloon that can reduce renal pelvis pressure, comprising:

[0025] The catheter 1 has an inflation tube 2 fixedly connected to one end, a balloon 3 fixedly connected to one end of the inflation tube 2, and the balloon 3 fixedly connected to the other end of the catheter 1. A connecting tube 11 is provided on the inflation tube 2.

[0026] Specifically, when using the device, the operator inserts it through the patient's urethra, bladder, and ureter, positioning the balloon portion above the ureteral stone, between the stone and the renal pelvis. The connecting tube 12 is then connected to an external inflation device, linking the inflation tube 2 to the connecting tube 11. When air is inflated into the connecting tube 11, the gas flows through the inflation tube 2, causing the balloon 3 to inflate and block the ureter. This allows the balloon 3 to effectively block the ureter during flushing with the irrigation fluid, preventing the stone from being flushed away. During the flushing process, the stone enters the kidney, and the catheter can effectively drain the fluid above the stone, preventing excessive pressure in the renal pelvis from causing bacteria to flow back into the bloodstream and lead to systemic infection. Furthermore, when the balloon 3 is used to block the kidney stone, the flushing fluid may seep into the renal pelvis from the side wall of the balloon 3 due to the impact. This fluid can be drained through the drainage port 4 on the catheter 1, allowing it to flow into the catheter 1 and out of the patient's body, thus preventing the flushing fluid from entering the renal pelvis and causing excessive internal pressure.

[0027] Please see Figures 1-5One side of the inflation tube 2 is configured as an air inlet 19, and the other side is configured as an exhaust outlet 9. The exhaust outlet 9 is fixedly connected to the balloon 3, and the connecting tube 11 is located on the air inlet 19. The connecting tube 11 is fixedly connected to the air inlet 19, and a plug 12 is slidably connected in the connecting tube 11.

[0028] Specifically, after the device is placed in the patient's body, the plug 12 on the connecting tube 11 is brought into contact with the external inflation device. By pushing the plug 12, the plug 12 slides in the connecting tube 11, thereby opening the connecting tube 11 and allowing the balloon 3 to be inflated. The balloon 3 can prevent the device from moving in the ureter, fixing the device in the ureter and blocking stones, preventing kidney stones from entering the patient's kidney and causing adverse effects on the patient.

[0029] Please see Figures 1-4 One end of the conduit 1 is fixedly connected to a drain port 4, and the other end of the conduit 1 is provided with a water outlet 5. The drain port 4 is provided with an anti-scratch layer 6 on its side, and a pressure sensor 8 is provided at the water outlet 5. A placement groove 10 is provided in the conduit 1, and a protective sleeve 7 is provided on the air inflator 2. The protective sleeve 7 is fixedly connected to the placement groove 10.

[0030] Specifically, once the device is fixed, when the balloon 3 is impacted by the flushing fluid, and the flushing fluid seeps in from the side of the balloon 3, the flushing fluid in the ureter can be drained through the drainage port 4 at the front end, allowing it to enter the inner groove of the catheter 1 and be discharged from the patient's body through the outlet 5. This facilitates the discharge of the flushing fluid from the patient's body and avoids the flushing fluid entering the renal pelvis and causing damage to the patient. Furthermore, the anti-scratching layer 6 on the side of the drainage port 4 can prevent the device from causing harm to the patient when inserted into the body. The pressure sensor 8 located on the outside of the catheter provides pressure feedback to know the pressure at the outlet, i.e., inside the renal pelvis, guiding the adjustment of the flushing speed during the operation.

[0031] Please see Figures 1-5 A fixing plate 13 is fixedly connected to the connecting pipe 11. A vent hole 15 is provided on the fixing plate 13. A guide roller 16 is fixedly connected to the fixing plate 13. A spring 14 is fixedly connected to the fixing plate 13. One end of the plug 12 is provided with a slot 17, and the other end of the plug 12 is provided with a connecting groove 18. The guide roller 16 is slidably connected in the connecting groove 18, and the other end of the spring 14 is fixedly connected in the connecting groove 18.

[0032] Specifically, when the staff contacts the external inflation device with the plug 12, the groove 17 facilitates contact between the external inflation device and the plug 12. When the staff pushes the external inflation device, the plug 12 moves in the connecting tube 11, connecting the external inflation device with the inner groove of the connecting tube 11. This allows the external inflation device to inflate the connecting tube 11, and the gas enters the inflation tube 2 through the vent 15, causing the balloon 3 to inflate and allowing the balloon 3 to be fixed in the patient's ureter. At this time, the spring 14 is in a compressed state. Furthermore, since the surface of the end of the plug 12 with the groove 17 is made of rubber, when the staff separates the external inflation device from the plug 12, the force of the spring 14 causes the plug 12 to move in the connecting tube 11, returning the plug 12 to its original position. The rubber end of the plug 12 then abuts against the vent of the connecting tube 11, sealing the connecting tube 11 and achieving a sealing effect on the inflation port.

[0033] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A ureteral stone-blocking balloon for reducing pressure in a renal pelvis, characterized by, include: A catheter (1) is fixedly connected to an inflation tube (2) at one end, and a balloon (3) is fixedly connected to one end of the inflation tube (2). The balloon (3) is fixedly connected to the other end of the catheter (1), and a connecting tube (11) is provided on the inflation tube (2).

2. The ureteral stone-blocking balloon for reducing pressure in the renal pelvis according to claim 1, characterized by, One side of the inflation tube (2) is configured as an air inlet (19), and the other side of the inflation tube (2) is configured as an exhaust port (9). The exhaust port (9) is fixedly connected to the balloon (3), and the connecting tube (11) is located on the air inlet (19).

3. A ureteral stone-blocking balloon for reducing renal pelvis pressure according to claim 2, characterized in that, The connecting pipe (11) is fixedly connected to the air inlet (19), and a plug (12) is slidably connected in the connecting pipe (11).

4. A ureteral stone-blocking balloon for reducing renal pelvis pressure according to claim 1, characterized in that, One end of the conduit (1) is fixedly connected to a drain port (4), and the other end of the conduit (1) is provided with a water outlet (5). The drain port (4) is provided with a scratch-resistant layer (6) on its side, and a pressure sensor (8) is provided at the water outlet (5).

5. A ureteral stone-blocking balloon for reducing renal pelvis pressure according to claim 4, characterized in that, The conduit (1) is provided with a placement groove (10), and the inflation tube (2) is provided with a protective sleeve (7), which is fixedly connected to the placement groove (10).

6. A ureteral stone-blocking balloon for reducing renal pelvis pressure according to claim 3, characterized in that, A fixing plate (13) is fixedly connected to the connecting pipe (11). A vent hole (15) is provided on the fixing plate (13). A guide roller (16) is fixedly connected to the fixing plate (13). A spring (14) is fixedly connected to the fixing plate (13).

7. A ureteral stone-blocking balloon for reducing renal pelvis pressure according to claim 6, characterized in that, One end of the plug (12) is provided with a slot (17), and the other end of the plug (12) is provided with a connecting groove (18). The guide roller (16) is slidably connected in the connecting groove (18), and the other end of the spring (14) is fixedly connected in the connecting groove (18).

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