Balloon catheter for upper urinary tract perfusion

Abstract

The utility model discloses a kind of balloon catheters for upper urinary tract perfusion, including catheter body and balloon;Catheter body is flexible tubular structure;The inside of catheter body is equipped with perfusion channel and inflation channel, inflation channel is parallel with perfusion channel and is not connected;Annular groove is provided on the outer wall of the proximal end of catheter body, balloon is fixed in annular groove;The front end of inflation channel is communicated with balloon, rear end extends to the outside of catheter body, for inflating balloon;The front end of balloon is trumpet-shaped, rear end gradually narrows, the front end part of balloon after inflation, rear end part respectively adhere to the inner wall of renal pelvis and ureter of upper urinary tract;Several convex points are arranged on the outer wall of the rear end of balloon.The balloon catheter of the utility model can better adhere to the anatomical structure of upper urinary tract, and the positioning effect of balloon catheter is enhanced, to solve the problems in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a balloon catheter for upper urinary tract irrigation. Background Technology

[0002] Upper urinary tract irrigation is a common procedure in the treatment of urinary system diseases, mainly used for drug delivery, contrast agent injection, or drainage. Traditional balloon catheters, typically with a symmetrical circular or elliptical design, are difficult to perfectly conform to the complex anatomical structures of the upper urinary tract (such as the renal pelvis and the narrow sections of the upper ureter), leading to problems such as inaccurate positioning and poor fit. Furthermore, the balloon lacks stability within the ureter, making it prone to slippage and affecting treatment outcomes. Utility Model Content

[0003] The purpose of this invention is to provide a balloon catheter for upper urinary tract irrigation that can better fit the anatomical structure of the upper urinary tract and enhance the positioning effect, so as to solve the problems existing in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a balloon catheter for upper urinary tract irrigation, comprising a catheter body and a balloon; the catheter body is a flexible tubular structure; The catheter body has an infusion channel inside, with an infusion channel inlet at the rear end and an infusion channel outlet at the front end, for delivering infusion fluid; An annular groove is provided on the outer wall of the catheter body near the front end, and the balloon is fixed in the annular groove; The catheter body is also provided with an inflation channel inside; the inflation channel is parallel to and not connected to the infusion channel; the front end of the inflation channel is connected to the balloon and the rear end extends to the outside of the catheter body for inflating the balloon. The balloon has a trumpet-shaped front end and gradually narrows to the rear end. After inflation, the front and rear ends of the balloon are respectively attached to the inner walls of the renal pelvis and ureter in the upper urinary tract. Several protrusions are also arranged on the outer wall of the balloon near the rear end.

[0005] This invention relates to a balloon catheter for upper urinary tract irrigation. The balloon's anterior and posterior ends are designed with asymmetry. The front end is funnel-shaped to better conform to the anatomical structure of the renal pelvis or upper ureter; the rear end gradually narrows to accommodate narrow sections of the ureter. This asymmetric design significantly improves the fit between the balloon and the upper urinary tract, enhancing positioning accuracy and stability. Simultaneously, the raised dots on the balloon surface increase friction with the ureteral wall, preventing slippage and ensuring smooth irrigation. Furthermore, the front and rear ends of the balloon are respectively provided with radiopaque markings, which facilitates observation of the balloon's position under X-ray or fluoroscopic guidance, thereby further improving the accuracy of the operation.

[0006] Furthermore, the balloon is made of medical-grade silicone material, which has good biocompatibility and elasticity.

[0007] Furthermore, side holes are evenly distributed circumferentially at the front end of the catheter body. These side holes serve as the outlet of the infusion channel and are used to evenly distribute the infusion fluid. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of the balloon catheter for upper urinary tract irrigation according to the present invention; Figure 2 This is a cross-sectional view of the balloon catheter for upper urinary tract irrigation according to the present invention. Detailed Implementation

[0009] The following detailed description of the specific implementation of the balloon catheter for upper urinary tract irrigation of this utility model is provided in conjunction with the accompanying drawings.

[0010] Combination Figure 1 and Figure 2 A balloon catheter for upper urinary tract irrigation includes a catheter body 10 and a balloon 20; the catheter body 10 is a flexible tubular structure. The catheter body 10 has an infusion channel 30 inside, and the rear end of the catheter body 10 has an infusion channel inlet 31 and the front end has an infusion channel outlet 32 ​​for delivering infusion fluid (such as drugs, contrast agents, etc.). An annular groove 11 is provided on the outer wall near the front end of the catheter body 10, and the balloon 20 is fixed in the annular groove 11. The catheter body 10 is further provided with an inflation channel 40; the inflation channel 40 is parallel to and not connected to the infusion channel 30; the front end of the inflation channel 40 is connected to the balloon 20 and the rear end extends to the outside of the catheter body 10 for inflating the balloon 20. The front end of the balloon 20 is trumpet-shaped and gradually narrows at the rear end. After inflation, the front end 201 and the rear end 202 of the balloon 20 are respectively attached to the inner walls of the renal pelvis and ureter in the upper urinary tract. Several tiny protrusions 21 are evenly distributed on the outer wall of the balloon 20 near the rear end.

[0011] The upper urinary tract in the human body generally includes the renal pelvis and ureters; the lower urinary tract includes the bladder and urethra.

[0012] This invention relates to a balloon catheter for upper urinary tract irrigation. The balloon 20 features an asymmetrical design at its front and rear ends. The front end of the balloon 20 is funnel-shaped, allowing for better contact with the inner wall of the renal pelvis or upper ureter. Simultaneously, the rear end of the balloon 20 gradually narrows to accommodate narrow sections of the ureter. This asymmetrical design significantly improves the fit between the balloon 20 and the upper urinary tract, enhancing positioning accuracy and stability. Furthermore, the balloon 20 is positioned within the annular groove 11, and protrusions 21 are distributed on the outer wall near the rear end to increase friction with the inner wall of the ureter, preventing slippage and ensuring smooth irrigation.

[0013] Furthermore, such as Figure 1 As shown, the front and rear ends of the balloon 20 are respectively provided with radiopaque markers (22, 23) to facilitate observation of the position of the balloon 20 under X-ray or fluoroscopic guidance, thereby further improving the accuracy of the operation.

[0014] Furthermore, the balloon 20 is made of medical-grade silicone material, which has good biocompatibility and elasticity.

[0015] Furthermore, such as Figure 1 , Figure 2 As shown, side holes are evenly distributed circumferentially at the front end of the catheter body 10. The side holes serve as the outlet 32 ​​of the infusion channel for uniformly distributing the infusion fluid.

[0016] In use, the balloon catheter for upper urinary tract irrigation of this invention is first inserted into the upper urinary tract through the urethra until the balloon 20 reaches the target position (such as the junction of the renal pelvis and ureter). Inflation is then performed through the inflation channel 40 to inflate the balloon 20, at which point the anterior end of the balloon adheres to the inner wall of the renal pelvis and the posterior end adheres to the inner wall of the upper ureter. Next, irrigation fluid (such as medication or contrast agent) is delivered to the target area through the irrigation channel 30. The irrigation fluid is evenly distributed through the side hole at the front end of the catheter body 10, ensuring that the medication or contrast agent can fully act on the target area. After the irrigation operation is completed, the gas inside the balloon 20 is expelled through the inflation channel 40, causing the balloon 20 to contract. The catheter body 10 is then removed from the urethra.

[0017] The balloon catheter for upper urinary tract irrigation of this invention has the following advantages: (1) Good fit: The front end of the balloon 20 is trumpet-shaped and the rear end gradually narrows, which can better fit the inner wall of the renal pelvis and ureter, improving the accuracy and stability of positioning.

[0018] (2) Anti-slip design: The protrusion 21 at the rear end of the balloon 20 increases the friction with the inner wall of the ureter, preventing the balloon from sliding and ensuring the smooth progress of the perfusion process.

[0019] (3) Easy to operate: The flexible design of the catheter body 10 and the rapid inflation and deflation function of the balloon 20 make the operation easier and reduce the operation time.

[0020] (4) Visual positioning: The radiopaque markings (22, 23) at the front and rear ends of the balloon 20 facilitate observation of the balloon's position under X-ray or fluoroscopic guidance, further improving the accuracy of the operation.

[0021] (5) Biocompatibility: The balloon 20 is made of medical silicone material, which has good biocompatibility and elasticity, reducing patient discomfort and the risk of complications.

[0022] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent process transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A balloon catheter for upper urinary tract irrigation, comprising a catheter body and a balloon; the catheter body is a flexible tubular structure; the catheter body has an irrigation channel inside, with an irrigation channel inlet at the rear end and an irrigation channel outlet at the front end, for delivering irrigation fluid; characterized in that: An annular groove is provided on the outer wall of the catheter body near the front end, and the balloon is fixed in the annular groove; the interior of the catheter body is also provided with an inflation channel; the inflation channel is parallel to the infusion channel and is not connected; the front end of the inflation channel is connected to the balloon and the rear end extends to the outside of the catheter body for inflating the balloon; the front end of the balloon is funnel-shaped and gradually narrows at the rear end, and after inflation, the front and rear ends of the balloon are respectively attached to the inner walls of the renal pelvis and ureter of the upper urinary tract; several protrusions are also provided on the outer wall of the balloon near the rear end.

2. The balloon catheter for upper urinary tract irrigation according to claim 1, characterized in that: The front and rear ends of the balloon are respectively provided with radiopaque markings.

3. The balloon catheter for upper urinary tract irrigation according to claim 1, characterized in that: The balloon is made of medical-grade silicone material.

4. The balloon catheter for upper urinary tract irrigation according to claim 1, characterized in that: Side holes are evenly distributed circumferentially at the front end of the catheter body, and the side holes serve as the outlet of the infusion channel.

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