High-strength balloon nephrostomy drainage tube

Abstract

The utility model relates to kidney fistula technical field, especially high -strength balloon kidney fistula drainage pipe fitting, including bearing sheath pipe and central drainage catheter, its outer surface is equipped with balloon, central drainage catheter is worn in bearing sheath pipe and extends to outside, and its end surface is opened to have lateral diversion micropore array, and central drainage catheter inside is provided with reverse hooking minimally invasive cutting array blade radially, the instrument interface connecting section is connected with pressure medium delivery interface to inject liquid in annular diversion chamber, and bearing sheath pipe is opened to have fluid diffusion pore group of aperture group with axial liquid injection channel intercommunication on the region that the balloon is wrapped. The utility model discloses removable central drainage catheter and the reverse hooking minimally invasive cutting array blade in central drainage catheter, further avoid the problem of plugging under the environment of kidney high viscosity liquid or tissue fragment, further guarantee the drainage effect, can take out tissue fragment together after moving out the catheter, avoid appearing secondary plugging.

Description

Technical Field

[0001] This utility model relates to the field of nephrostomy technology, and in particular to a high-strength balloon nephrostomy drainage tube. Background Technology

[0002] In the field of interventional urological surgery, nephrostomy drainage tubes are core instruments for treating urinary tract obstruction, hydronephrosis, and other diseases. Traditional nephrostomy catheters mostly use a single-lumen structure, and their functional limitations and structural defects often lead to low clinical operation efficiency and increased risk of complications. Specifically, existing technologies have the following drawbacks: First, conventional catheters rely on a single opening at the end for drainage, which is prone to blockage in the environment of high-viscosity renal fluid or tissue debris, requiring repeated flushing or even catheter replacement, increasing patient suffering and operational complexity; Second, during catheter removal, tissue debris attached to the tube wall may detach and remain in the body, forming a secondary source of obstruction, requiring additional interventional treatment. Utility Model Content

[0003] The present invention aims to solve the above-mentioned defects and provide a high-strength balloon nephrostomy drainage tube.

[0004] In order to overcome the defects in the background technology, the technical solution adopted by this utility model to solve its technical problem is: a high-strength balloon nephrostomy drainage tube, including a carrying sheath, a balloon disposed on its outer surface, a radially abrupt change at its rear end to form an instrument interface connection section, and an axially opened axial injection channel and an annular drainage chamber communicating with the axial injection channel inside.

[0005] The central drainage catheter is inserted into the supporting sheath and extends to the outside. Its end surface is provided with a lateral drainage micropore array, and its interior is provided with a reverse hook thorn micro-invasive cutting array blade.

[0006] The instrument interface connection section is connected to a pressure medium delivery interface to inject liquid into the annular guide chamber, and the area of ​​the bearing sheath wrapped by the balloon is provided with a group of fluid diffusion pores that communicate with the axial injection channel.

[0007] Further improvements include the provision of a limiting engagement groove on the end face of the instrument interface connection section, the radial abrupt change on the central drainage catheter forming a catheter positioning flange, and the catheter positioning flange being accommodated within the limiting engagement groove.

[0008] Further improvements include a detachable connection between the instrument interface connection section and the modular sealing end cap, wherein the modular sealing end cap has an interface channel corresponding to the inner hole of the central drainage catheter.

[0009] Further improvements include a gradual decrease in pore size from the distal to the proximal end in the fluid diffusion pore group.

[0010] Further improvements include the use of ultra-thin medical-grade polyurethane for the balloon.

[0011] The beneficial effects of this utility model are: This design uses a removable central drainage catheter and a reverse hook puncture micro-invasive cutting array blade inside the central drainage catheter, thereby avoiding blockage problems in the environment of high viscosity fluid or tissue fragments in the kidney, further ensuring the drainage effect. After the catheter is removed, the tissue fragments can be taken out together to avoid secondary blockage. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is the front view of this utility model;

[0014] Figure 2 yes Figure 1 Sectional view of BB;

[0015] Figure 3 yes Figure 1 Sectional view of CC;

[0016] Figure 4 yes Figure 1 Sectional view of AA;

[0017] In the figure, 1-central drainage catheter, 2-lateral drainage micropore array, 3-fluid diffusion pore group, 4-balloon, 5-bearing sheath, 6-pressure medium delivery interface, 7-instrument interface connection section, 8-annular drainage chamber, 9-axial injection channel, 10-reverse hook thorn minimally invasive cutting array blade.

[0018] 101 - Catheter positioning flange;

[0019] 701-Modular sealing end cap, 702-Interface channel, 703-Limit locking groove. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort in accordance with the embodiments of the basic utility model are within the scope of protection of this utility model.

[0021] refer to Figure 1 , Figure 2 and Figure 3A high-strength balloon nephrostomy drainage tube includes a support sheath 5, on the outer surface of which is fitted with a balloon 4. The balloon 4 is made of ultra-thin medical-grade polyurethane, with its thickness precisely controlled between 50-80 μm. This specific thickness range ensures that the balloon 4 possesses good flexibility to adapt to the complex physiological environment inside the human body, while also meeting the requirements of high-strength use. Simultaneously, the balloon 4 has excellent burst pressure performance, with a burst pressure greater than 5 atm, ensuring that the balloon 4 will not rupture due to internal pressure changes during normal use, providing a solid guarantee for the safety of medical operations. Its rear end radially abruptly forms an instrument interface connection section 7. This connection section is designed to ensure a stable and precise connection with other related medical equipment or tubing. In practical medical applications, reliable connections are crucial for the smooth conduct of medical operations. Internally, it has an axially opened axial injection channel 9 and an annular drainage chamber 8 communicating with the axial injection channel 9. This internal structural design lays the foundation for subsequent fluid delivery and distribution, ensuring that the fluid can flow along a predetermined path, achieving the normal expansion and other functions of the balloon 4.

[0022] The central drainage catheter 1 is inserted into the supporting sheath 5 and extends to the outside. Its end surface has a lateral flow-guiding micropore array 2, which employs a distributed micropore design with pore diameters ranging from 0.5 to 1.2 mm. This design allows liquid to smoothly pass through the lateral flow-guiding micropore array 2 into the central drainage catheter 1. Simultaneously, the front end of the central drainage catheter 1 also serves as a channel for liquid entry. In practical use, such as in kidney drainage scenarios, urine enters the central drainage catheter 1 through these channels and then flows out. Due to the rational design of the lateral flow-guiding micropore array 2 and the optimization of the entire catheter structure, blockage can be effectively avoided. If blockage occurs, the central drainage catheter 1 can be withdrawn, ensuring continuous and smooth drainage. Furthermore, the front end of the central drainage catheter 1 is chamfered. This design primarily aims to reduce tissue adhesion. Extensive clinical practice and research have shown that a chamfer angle of 30°-45° minimizes the adhesion of the catheter tip to human tissue. During medical procedures, reducing tissue adsorption can lower the risk of damage to surrounding tissues, improve patient comfort, and also help improve drainage effect and overall quality of medical procedures. Furthermore, it is equipped with a reverse hook minimally invasive cutting array blade 10 in the internal radial direction. The reverse hook minimally invasive cutting array blade 10 is used to cut the tissue flowing through the tube to prevent blockage. When the central drainage catheter 1 is removed due to blockage, the reverse hook minimally invasive cutting array blade 10 will hook the tissue and remove it together with it.

[0023] The instrument interface connection section 7 is connected to a pressure medium delivery interface 6, which is specifically used for injecting liquid into the annular flow chamber 8. A fluid diffusion pore group 3, communicating with the axial injection channel 9, is formed in the area of ​​the supporting sheath 5 enclosed by the balloon 4. When liquid is injected from the pressure medium delivery interface 6, the liquid first enters the annular flow chamber 8, and then flows into the balloon 4 through the axial injection channel 9, causing the balloon 4 to inflate. This design ensures that the balloon 4 can expand stably under the action of liquid to meet the needs of different medical scenarios. Simultaneously, the fluid diffusion pore group 3 adopts a progressive design, with the pore diameter decreasing from the distal to the proximal end. This design ensures that the balloon 4 is subjected to uniform force during expansion, avoiding uneven expansion due to uneven local pressure, thereby guaranteeing the stability and reliability of the balloon 4's expansion.

[0024] refer to Figure 4 In this embodiment, a limiting engagement groove 703 is provided on the end face of the instrument interface connection section 7, and a catheter positioning flange 101 is formed by a radial abrupt change on the central drainage catheter 1. The catheter positioning flange 101 is accommodated in the limiting engagement groove 703. The main function of the catheter positioning flange 101 is to limit the position. It can accurately limit the position of the central drainage catheter 1 and prevent unnecessary displacement during use, thereby ensuring the stability and reliability of the entire system.

[0025] In this embodiment, the instrument interface connection section 7 is detachably connected to the modular sealing end cap 701. The modular sealing end cap 701 has an interface channel 702 corresponding to the inner hole of the central drainage catheter 1, thereby outputting liquid. This connection method allows the catheter positioning flange 101 to remain within the limiting engagement groove 703. On the one hand, this effectively prevents the central drainage catheter 1 from retracting, ensuring that the catheter remains in the correct position during medical operations. On the other hand, it facilitates the replacement of the central drainage catheter 1 when needed. In practical medical applications, depending on the patient's specific condition or the use of the instrument, it is sometimes necessary to replace the central drainage catheter 1 promptly. This detachable connection design greatly facilitates the replacement operation, improving the efficiency and flexibility of medical operations.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-strength balloon nephrostomy drainage tube, characterized by, It includes a carrying sheath (5), a balloon (4) on its outer surface, a radially abrupt change at its rear end to form a device interface connection section (7), an axial injection channel (9) opened in its interior, and an annular flow chamber (8) connected to the axial injection channel (9). The central drainage catheter (1) is inserted into the carrying sheath (5) and extends to the outside. A lateral drainage micropore array (2) is opened on the end surface of the catheter, and a reverse hook puncture micro-cutting array blade (10) is radially arranged inside the catheter. The instrument interface connection section (7) is connected to a pressure medium delivery interface (6) to inject liquid into the annular flow chamber (8), and the area of ​​the bearing sheath (5) wrapped by the balloon (4) is provided with a group of fluid diffusion pores (3) that communicate with the axial injection channel (9).

2. A high-strength balloon nephrostomy drainage tube according to claim 1, wherein: A limiting engagement groove (703) is provided on the end face of the instrument interface connection section (7), and a catheter positioning flange (101) is formed by a radial abrupt change on the central drainage catheter (1), and the catheter positioning flange (101) is accommodated in the limiting engagement groove (703).

3. The high-strength balloon nephrostomy drainage tube as described in claim 2, characterized in that: The instrument interface connection section (7) is detachably connected to the modular sealing end cap (701), and the modular sealing end cap (701) has an interface channel (702) corresponding to the inner hole of the central drainage catheter (1).

4. The high-strength balloon nephrostomy drainage tube as described in claim 1, characterized in that: In the fluid diffusion pore group (3), the pore size gradually decreases from the distal end to the proximal end.

5. The high-strength balloon nephrostomy drainage tube as described in claim 1, characterized in that: The balloon (4) is made of ultra-thin medical polyurethane.

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