A new type of urinary catheter

Abstract

The utility model discloses a novel catheter, the catheter is equipped with inner layer wall, middle layer wall, and the inner layer wall and the middle layer wall divide the catheter into drainage cavity, flushing cavity and air bag cavity from inside to outside, the inner surface of the inner layer wall is equipped with sharkskin bionic texture, and the sharkskin bionic texture is formed by a plurality of V-shaped grooves closely arranged along the axial direction of the drainage cavity, the front end of the drainage cavity is equipped with a drainage port, the front end of the flushing cavity is equipped with a flushing port, the outer wall of the front end of the catheter is equipped with an air bag, and the front end of the air bag cavity is connected with the air bag. The utility model optimizes the microstructure of the inner wall of the pipeline, effectively reduces the frictional resistance between the fluid and the pipe wall, and inhibits the growth of bacteria.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a novel urinary catheter. Background Technology

[0002] For patients with difficulty urinating, a urinary catheter is required. The catheter is inserted into the bladder through the urethra to drain urine. The other end of the catheter is connected to a urine bag to collect urine. To prevent the catheter from falling out, it must be secured.

[0003] The increased surface tension of the catheter and urine increases drainage resistance, which may prevent urine from draining smoothly. In particular, crystalline substances in the urine (such as magnesium ammonium phosphate) can easily precipitate inside the catheter, causing blockage. Bacterial biofilms can also easily form inside the catheter, leading to urinary tract infections. Although some catheters are coated with antibiotics (such as silver ions), they are prone to developing drug resistance. According to statistics from the US CDC, catheter-associated urinary tract infections (CAUTI) account for 40% of hospital-acquired infections. Utility Model Content

[0004] To address the shortcomings of the existing technology, this invention provides a novel urinary catheter that can be easily and effectively fixed, reduces the flow resistance between urine and the catheter wall, and allows for flushing to prevent bacterial growth.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0006] A novel urinary catheter is provided, comprising an inner wall and a middle wall, which divide the catheter from the inside out into a drainage chamber, an irrigation chamber, and an airbag chamber. The inner surface of the inner wall is provided with a sharkskin-inspired texture, which consists of several V-shaped grooves closely arranged along the axial direction of the drainage chamber. The drainage chamber has a drainage port at its front end, the irrigation chamber has an irrigation port at its front end, and an airbag is provided on the outer wall of the front end of the catheter. The airbag chamber is connected to the front end of the airbag chamber.

[0007] Furthermore, the width b of the V-shaped groove is 2-3 μm, and the depth h is 1-2 μm.

[0008] Furthermore, the front end of the drainage cavity is closed and a urinary catheter extends out, with the drainage port located on the front side wall of the drainage cavity.

[0009] Furthermore, the inner wall material is medical-grade silicone.

[0010] Furthermore, a magnetic base is embedded on the inner side of the inner wall of the catheter head, and the magnetic base is magnetically connected to an integrated sensor, which is then connected to an external terminal.

[0011] Furthermore, the integrated sensor includes a waterproof housing and a pH sensing electrode, a temperature sensor, a pressure sensor, a power module, and a wireless transmission module encapsulated within the waterproof housing. The surface of the waterproof housing is provided with a magnetic end and a detection end. The magnetic end is coupled to a magnetic base, and the detection end is electrically connected to the pH sensing electrode, the temperature sensor, and the pressure sensor. The pH sensing electrode, the temperature sensor, and the pressure sensor are electrically connected to the power module and the wireless transmission module.

[0012] Furthermore, the intermediate wall material is silicone or polyurethane.

[0013] Furthermore, the middle wall has a spiral corrugated structure.

[0014] Furthermore, the airbag is a double-layer composite airbag, with an outer layer of hydrogel and an inner layer of silicone, both of which are coated with an antibacterial agent.

[0015] Furthermore, a micro pump and a liquid storage bag are sequentially connected to the rear end of the flushing chamber.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention can conveniently and effectively fix the urinary catheter, reduce drainage resistance, flush the bladder and urinary catheter, reduce the risk of crystallization, prevent bacterial growth, and reduce urinary tract infections caused by the urinary catheter. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 for Figure 1 Detailed sectional view of part A in the middle;

[0021] Figure 3 A schematic diagram of the cross-section of the grooves in the shark skin biomimetic texture;

[0022] Figure 4 This is a schematic diagram of the middle layer wall structure;

[0023] In the diagram: 1-catheter, 2-inner wall, 3-middle wall, 4-drainage cavity, 5-airbag cavity, 6-sharkskin biomimetic texture, 7-drainage port, 8-irrigation port, 9-airbag, 10-magnetic base, 11-integrated sensor, 12-irrigation cavity. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] In the description of the embodiments of this application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is not intended to 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, it should not be construed as a limitation of this application.

[0026] In the description of the embodiments of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] like Figure 1-2 As shown, a novel urinary catheter is provided, wherein the urinary catheter 1 has an inner wall 2 and a middle wall 3, which divide the interior of the urinary catheter 1 into a drainage cavity 4, an irrigation cavity 12 and an air balloon cavity 5 from the inside out.

[0028] The inner wall 2 is made of medical-grade silicone, and its inner surface features a sharkskin-inspired texture 6. This texture 6 consists of several V-shaped grooves closely arranged along the axis of the drainage cavity 4. Figure 3As shown, the V-shaped groove has a width b of 2-3 μm and a depth h of 1-2 μm, mimicking the optimal proportions of shark dermal denticles. The shark-skin biomimetic texture 6 directly contacts urine, reducing the adhesion rate of urinary salt crystals and the risk of crusting, thus reducing the risk of blockage (clinical data shows a blockage rate reduction of approximately 60%). It can also inhibit bacterial biofilm formation (clinical data shows a reduction of approximately 85% in E. coli), improving antibacterial efficacy and reducing drug resistance. The shark-skin biomimetic texture 6 is formed using a micro-nano injection molding process. The drainage cavity 4 is closed at the front end and extends from the catheter 1, with the drainage port 7 located on the front sidewall of the drainage cavity 4.

[0029] The middle wall layer 3 is made of silicone or polyurethane, such as Figure 4 As shown, the middle wall 3 has a spiral corrugated structure, which can prevent pipe bending and blockage, buffer water flow impact, prevent water splashing, and reduce irritation to the bladder. The front end of the irrigation chamber 12 is provided with an irrigation port 8, and the rear end is connected in sequence to a micro pump and a storage bag. The storage bag stores irrigation solution or medicine. The micro pump pumps the irrigation solution or medicine into the irrigation chamber 12 to irrigate the bladder and the catheter 1.

[0030] The catheter 1 has a balloon 9 on its outer wall at the front end. The balloon cavity 5 is connected to the front end of the balloon 9. Inflating the balloon can effectively fix the catheter 1. The balloon 9 is a double-layer composite balloon. The outer layer is a hydrogel layer and the inner layer is a silicone layer. Both the hydrogel layer and the silicone layer are coated with an antibacterial agent. The hydrogel layer is skin-friendly and reduces discomfort during catheter insertion, while the silicone layer ensures the airtightness and resilience of the balloon. The antibacterial coating has antibacterial function.

[0031] A magnetic base 10 is embedded on the inner side of the inner wall 2 of the catheter head 1. The magnetic base 10 magnetically connects to an integrated sensor 11, which in turn connects to an external terminal. The integrated sensor 11 includes a waterproof housing and a pH sensing electrode, a temperature sensor, a pressure sensor, a power module, and a wireless transmission module encapsulated on the waterproof housing. The bottom of the waterproof housing has a magnetic end coupled to the magnetic base, and the top of the waterproof housing has a detection end electrically connected to the pH sensing electrode, temperature sensor, and pressure sensor. The pH sensing electrode, temperature sensor, and pressure sensor are electrically connected to the power module and wireless transmission module. The pH sensing electrode is used to detect the pH value of urine; a solid-state IrOx electrode or a polyaniline-modified graphene electrode is recommended due to its low cost. The temperature sensor is used to monitor bladder temperature; an NTC thermistor is recommended. The pressure sensor is used to detect intrabladder pressure; a miniature MEMS pressure sensor is recommended. The power module supplies power to the sensors, and the wireless transmission module wirelessly transmits sensor data to an external terminal. The micro pump is electrically connected to an external terminal, which can control the micro pump to start and stop. It can automatically flush based on the received sensor data, or pump fluid into the bladder by setting the time or dosage manually.

[0032] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A novel urinary catheter, characterized in that: The catheter has an inner wall (2) and a middle wall (3). The inner wall (2) and the middle wall (3) divide the catheter (1) from the inside to the outside into a drainage cavity (4), a flushing cavity (12), and an air bladder cavity (5). The inner surface of the inner wall (2) is provided with a sharkskin biomimetic texture (6). The sharkskin biomimetic texture (6) is composed of several V-shaped grooves closely arranged along the axis of the drainage cavity (4). The drainage cavity (4) has a drainage port (7) at the front end. The flushing cavity (12) has a flushing port (8) at the front end. The outer wall of the front end of the catheter (1) is provided with an air bladder (9). The front end of the air bladder cavity (5) is connected to the air bladder (9).

2. The novel urinary catheter according to claim 1, characterized in that: The width b of the V-shaped groove is 2-3 μm, and the depth h is 1-2 μm.

3. The novel urinary catheter according to claim 1, characterized in that: The front end of the drainage cavity (4) is closed and a catheter (1) extends out. The drainage port (7) is located on the front side wall of the drainage cavity (4).

4. The novel urinary catheter according to claim 1, characterized in that: The inner wall (2) is made of medical-grade silicone.

5. The novel urinary catheter according to claim 1, characterized in that: The inner wall (2) of the head of the catheter (1) is embedded with a magnetic base (10), which is magnetically connected to an integrated sensor (11). The integrated sensor (11) is connected to an external terminal.

6. The novel urinary catheter according to claim 5, characterized in that: The integrated sensor (11) includes a waterproof housing and a pH sensing electrode, a temperature sensor, a pressure sensor, a power module, and a wireless transmission module encapsulated within the waterproof housing. The surface of the waterproof housing is provided with a magnetic end and a detection end. The magnetic end is coupled to the magnetic base, and the detection end is electrically connected to the pH sensing electrode, the temperature sensor, and the pressure sensor. The pH sensing electrode, the temperature sensor, and the pressure sensor are electrically connected to the power module and the wireless transmission module.

7. The novel urinary catheter according to claim 1, characterized in that: The material of the middle wall (3) is silicone or polyurethane.

8. The novel urinary catheter according to claim 1, characterized in that: The middle wall (3) has a spiral corrugated structure.

9. The novel urinary catheter according to claim 1, characterized in that: The airbag (9) is a double-layer composite airbag, with an outer layer of hydrogel and an inner layer of silicone. Both the hydrogel and silicone layers are coated with an antibacterial agent.

10. The novel urinary catheter according to claim 1, characterized in that: The rear end of the flushing chamber (12) is connected to a micro pump and a liquid storage bag in sequence.

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