A hemodialysis catheter pressure guard

Abstract

This utility model relates to the field of medical device technology, and in particular to a pressure-resistant device for hemodialysis catheters. The technical solution is as follows: A pressure-resistant device for hemodialysis catheters includes a dialysis catheter assembly disposed on the top of the epidermal layer, with a pressure-resistant component on one side of the dialysis catheter assembly. The dialysis catheter assembly includes a dialysis main tube, which is fixedly installed on the top of the epidermal layer by the pressure-resistant component. The spring and arc-shaped cover plate provide elastic pressure protection for the dialysis main tube. When external pressure is applied, the spring buffers the pressure, preventing direct compression of the dialysis main tube and reducing the risk of damage or impaired dialysis function due to pressure. The positioning groove and positioning mark ensure accurate installation of the pressure-resistant component on the dialysis main tube, ensuring precise alignment of the components, guaranteeing the stability and reliability of the pressure-resistant effect, and facilitating rapid installation and use of the device.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a pressure-prevention device for hemodialysis catheters. Background Technology

[0002] In modern medicine, hemodialysis is a crucial treatment for diseases such as kidney failure, providing vital support for many patients to maintain life and improve their quality of life. For patients dependent on hemodialysis, the dialysis catheter becomes the "lifeline" connecting the external dialysis device to the body's circulatory system. However, traditional hemodialysis catheters face numerous serious challenges in practical use. During daily life and treatment, external factors such as body activity, sleeping posture, and clothing can easily compress the dialysis catheter. Once the dialysis catheter is compressed, it not only obstructs blood flow and affects dialysis effectiveness, but prolonged compression can also lead to catheter rupture and damage, increasing the risk of infection, and in severe cases, even endangering the patient's life.

[0003] A search revealed that Chinese Patent CN221814881U discloses a pressure-resistant device for hemodialysis catheters, comprising a first protective cover and a second protective cover. The first and second protective covers are rotatably connected via a pivot. Rubber rings are fixedly connected at equal intervals on one side of the inner surface of the first protective cover, and first springs are symmetrically arranged at equal intervals on one side of the inner surface of the second protective cover. A pressure plate is fixedly connected to one end of the first spring, and clamps are symmetrically arranged on the inner surface of the first protective cover away from the rubber rings. This prior art can prevent the patient's body or bedding from squeezing the dialysis catheter during sleep, protecting the dialysis catheter's blood vessels from external blockage and facilitating the smooth progress of hemodialysis.

[0004] However, the above-mentioned existing technologies still have the following shortcomings in application: the protective cover structure of the device relying on rotational connection is relatively complex, and in actual use, frequent opening and closing may cause wear of components, affecting the use effect; in addition, the device only focuses on external protection and lacks fixation and protection for the inside of the dialysis catheter, and cannot prevent the dialysis main tube from shifting or shaking; furthermore, the external protection structure of the existing technology cannot provide effective buffering for the dialysis catheter, and the protection effect of the dialysis catheter is not good. Utility Model Content

[0005] In order to solve the problems mentioned in the background art, the present invention provides a pressure-prevention device for hemodialysis catheters.

[0006] This utility model provides a hemodialysis catheter anti-pressure device, which adopts the following technical solution: a hemodialysis catheter anti-pressure device includes an epidermal layer, a dialysis catheter assembly is provided on the top of the epidermal layer, and an anti-pressure component is provided on one side of the dialysis catheter assembly; the dialysis catheter assembly includes a dialysis main tube, and the dialysis main tube is fixedly installed on the top of the epidermal layer by the anti-pressure component;

[0007] The anti-pressure assembly includes a breathable dressing, a first base, a limiting post, a spring, an arc-shaped cover plate, a positioning groove, a positioning mark, and a retaining roller. The breathable dressing is adhered to the epidermis near the puncture site. The first base is symmetrically positioned on the top of the breathable dressing. A limiting post is fixedly connected to the top of the first base. A spring is fitted onto one side of the limiting post. An arc-shaped cover plate is fixedly connected to the bottom of the spring. A positioning groove is formed on the top of the arc-shaped cover plate. A positioning mark is positioned directly below the positioning groove. The positioning mark is fixedly connected to the top of the dialysis tube. The retaining roller is fixedly installed inside the dialysis tube. The retaining roller, installed inside the dialysis tube, cooperates with the arc-shaped lower pressure block and the arc-shaped top block to fix the dialysis tube and prevent it from shifting or being excessively compressed.

[0008] Optionally, the anti-pressure assembly further includes a second base, a positioning block, an arc-shaped top block, and an arc-shaped downward pressing block. The second base is fixedly connected to the top of the breathable dressing. The positioning block is fixedly connected to the top of the second base. The arc-shaped top block is fixedly connected to the top of the positioning block. The arc-shaped downward pressing block is fixedly connected to the bottom of the arc-shaped cover plate. The positions of the arc-shaped downward pressing block and the arc-shaped top block correspond to the slots of the chuck.

[0009] Optionally, an annular groove is provided at the contact point between the caliper and the inner wall of the dialysis tube, and the size of the annular groove is adapted to the shape of the arc-shaped lower pressure block and the arc-shaped top block.

[0010] Optionally, the positioning groove and the positioning mark have the same width, and when the positioning groove and the positioning mark coincide, the arc-shaped pressing block and the arc-shaped top block press the dialysis tube until it deforms and engages with the annular groove of the caliper.

[0011] Optionally, the dialysis catheter assembly further includes a bifurcation tube, a bundle block, and a puncture tube. The bifurcation tube is connected to the dialysis main tube via the bundle block, and the puncture tube is connected to an internal dialysis catheter in the patient's body.

[0012] In summary, this utility model has the following beneficial technical effects:

[0013] This invention provides elastic pressure protection for the dialysis tubing through the use of springs and an arc-shaped cover plate. When external pressure is applied, the springs buffer the pressure, preventing direct compression of the dialysis tubing and reducing the risk of damage or impaired dialysis function due to pressure. The positioning grooves and positioning marks ensure accurate installation of the pressure-resistant components on the dialysis tubing, ensuring precise alignment of each component and guaranteeing the stability and reliability of the pressure-resistant effect. This also facilitates rapid installation and use of the device. The arc-shaped lower pressure block, arc-shaped top block, and the groove of the caliper wheel work together to compress the dialysis tubing until it deforms and engages with the annular groove of the caliper wheel. This effectively prevents the dialysis tubing from shifting or shaking, keeping the dialysis tubing stable during use and ensuring the smooth progress of the dialysis process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the device in an embodiment of this utility model;

[0015] Figure 2 This is a partial structural diagram of the device in an embodiment of this utility model;

[0016] Figure 3 This is a partial structural diagram of the anti-pressure component in an embodiment of this utility model;

[0017] Figure 4 This is a schematic diagram of the partial structure installation of the anti-pressure component in an embodiment of this utility model;

[0018] Reference numerals: 2. Dialysis catheter assembly; 201. Bifurcation tube; 202. Bundle block; 203. Main dialysis tube; 204. Puncture tube; 3. Anti-pressure assembly; 301. Breathable dressing; 302. First base; 303. Limiting post; 304. Spring; 305. Arc-shaped cover plate; 306. Positioning groove; 307. Positioning mark; 308. Clip roller; 309. Second base; 310. Positioning block; 311. Arc-shaped top block; 312. Arc-shaped downward pressure block. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below.

[0020] This utility model discloses a pressure-prevention device for hemodialysis catheters.

[0021] Please see Figure 1 A pressure-resistant device for a hemodialysis catheter, comprising an epidermal layer ( Figure 1 The area shown at the bottom is the epidermis. A dialysis catheter assembly 2 is provided on the top of the epidermis, and an anti-pressure component 3 is provided on one side of the dialysis catheter assembly 2. The dialysis catheter assembly 2 includes a dialysis main tube 203, which is fixedly installed on the top of the epidermis by the anti-pressure component 3.

[0022] Please see Figures 2 to 4 The pressure-resistant component 3 includes a breathable dressing 301, a first base 302, a limiting post 303, a spring 304, an arc-shaped cover plate 305, a positioning groove 306, a positioning mark 307, and a retaining wheel 308. The breathable dressing 301 is adhered to the epidermis near the puncture site. The first base 302 is symmetrically arranged on the top of the breathable dressing 301. The limiting post 303 is fixedly connected to the top of the first base 302. A spring 304 is sleeved on one side of the limiting post 303. The arc-shaped cover plate 305 is fixedly connected to the bottom of the spring 304. The positioning groove 306 is opened on the top of the arc-shaped cover plate 305. The positioning mark 307 is arranged directly below the positioning groove 306. The positioning mark 307 is fixedly connected to the top of the dialysis main tube 203. The retaining wheel 308 is fixedly installed inside the dialysis main tube 203.

[0023] The anti-pressure component 3 also includes a second base 309, a positioning block 310, an arc-shaped top block 311, and an arc-shaped downward pressing block 312. The second base 309 is fixedly connected to the top of the breathable dressing 301. The positioning block 310 is fixedly connected to the top of the second base 309. The arc-shaped top block 311 is fixedly connected to the top of the positioning block 310. The arc-shaped downward pressing block 312 is fixedly connected to the bottom of the arc-shaped cover plate 305. The positions of the arc-shaped downward pressing block 312 and the arc-shaped top block 311 correspond to the slots of the retaining roller 308.

[0024] An annular groove is provided at the contact point between the caliper 308 and the inner wall of the dialysis tube 203, and the size of the annular groove is adapted to the shape of the arc-shaped lower pressure block 312 and the arc-shaped top block 311.

[0025] The positioning groove 306 and the positioning mark 307 have the same width. When the positioning groove 306 and the positioning mark 307 coincide, the arc-shaped pressing block 312 and the arc-shaped top block 311 press the dialysis tube 203 until it deforms and then engages with the annular groove of the caliper 308.

[0026] The dialysis catheter assembly 2 also includes a bifurcation tube 201, a bundle block 202, and a puncture tube 204. The bifurcation tube 201 is connected to the dialysis main tube 203 through the bundle block 202, and the puncture tube 204 is connected to the patient's internal dialysis catheter.

[0027] Further explanation is needed:

[0028] The pressure-resistant component 3 plays a crucial role in the hemodialysis catheter system. First and foremost, its most direct function is to provide reliable pressure protection for the dialysis tube 203. The breathable dressing 301 adheres to the epidermis near the puncture site, providing a stable mounting base for the entire component. The limiting post 303 and spring 304 on the first base 302 work together with the arc-shaped cover plate 305. When external pressure strikes, the spring 304 can buffer the pressure, preventing the dialysis tube 203 from being subjected to hard compression. This greatly reduces the possibility of the dialysis tube 203 being damaged or blocked due to pressure, ensuring the smooth flow of fluid during hemodialysis.

[0029] Secondly, the anti-pressure component 3 also serves to accurately position and securely fix the dialysis tube 203. The positioning groove 306 and the positioning mark 307 work together to ensure that the anti-pressure component 3 can be accurately installed on the dialysis tube 203, guaranteeing the precise correspondence of each component during operation. The coordinated operation of the second base 309, positioning block 310, arc-shaped top block 311, arc-shaped lower pressing block 312, and chuck 308 effectively prevents the dialysis tube 203 from shifting or shaking by pressing it into deformation and tightly engaging it with the annular groove of the chuck 308. This not only ensures the stability of the dialysis process but also reduces a series of adverse effects that may be caused by changes in the position of the dialysis tube 203, providing strong support for the smooth implementation of hemodialysis treatment.

[0030] The implementation principle of the anti-pressure device for hemodialysis catheters in this embodiment of the utility model is as follows:

[0031] First, the breathable dressing 301 is attached to the side of the epidermis near the puncture site, which serves as a stable base for the entire anti-pressure component 3. At the same time, the precise correspondence between the positioning groove 306 and the positioning mark 307 ensures that the anti-pressure component 3 can be accurately installed on the dialysis tube 203, laying the foundation for the subsequent coordinated operation of various components.

[0032] Secondly, in daily use, when there is a potential threat from external pressure to the dialysis tube 203, the limiting post 303, spring 304, and arc-shaped cover plate 305 on the first base 302 begin to function. The spring 304, with its own elasticity, provides an upward buffering force for the arc-shaped cover plate 305. Once pressure is applied, the arc-shaped cover plate 305, supported by the spring 304, can effectively buffer the pressure, prevent the dialysis tube 203 from being subjected to hard compression, reduce the risk of the dialysis tube 203 being damaged or blocked due to pressure, and ensure the smooth flow of fluid during hemodialysis.

[0033] Next, the second base 309, positioning block 310, arc-shaped top block 311, arc-shaped bottom block 312, and locating wheel 308 together form a fixing system. As the anti-pressure component 3 is installed in place, the positions of the arc-shaped top block 311 and arc-shaped bottom block 312 correspond to the slots of the locating wheel 308, creating conditions for fixing the dialysis tube 203.

[0034] Next, when the positioning groove 306 coincides with the positioning mark 307, it means that the anti-pressure component 3 is installed accurately. At this time, the arc-shaped lower pressure block 312 and the arc-shaped top block 311 work together to compress the dialysis tube 203 to a certain degree of deformation, so that it is tightly engaged with the annular groove of the caliper 308. This tight engagement effectively prevents the dialysis tube 203 from shifting or shaking, ensuring the stability of the dialysis process.

[0035] Finally, throughout the entire hemodialysis process, the pressure-resistant component 3 maintains the above-mentioned working state. On the one hand, it continuously provides pressure protection for the dialysis tube 203 and buffers the possible external pressure. On the other hand, it securely fixes the dialysis tube 203, reducing the adverse effects that may be caused by changes in the position of the dialysis tube 203, and providing comprehensive and continuous strong support for the smooth implementation of hemodialysis treatment.

[0036] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A haemodialysis catheter pressure guard comprising a dialysis catheter assembly (2) characterised in that: The dialysis catheter assembly (2) is disposed on the top of the epidermal layer, and an anti-pressure component (3) is provided on one side of the dialysis catheter assembly (2); the dialysis catheter assembly (2) includes a dialysis main tube (203), which is fixedly installed on the top of the epidermal layer by the anti-pressure component (3); The pressure-resistant component (3) includes a breathable dressing (301), a first base (302), a limiting post (303), a spring (304), an arc-shaped cover plate (305), a positioning groove (306), a positioning mark (307), and a retaining wheel (308). The breathable dressing (301) is adhered to the epidermis near the puncture site. The first base (302) is symmetrically arranged on the top of the breathable dressing (301), and the limiting post is fixedly connected to the top of the first base (302). 303), a spring (304) is sleeved on one side of the limiting post (303), an arc-shaped cover plate (305) is fixedly connected to the bottom of the spring (304), a positioning groove (306) is opened on the top of the arc-shaped cover plate (305), a positioning mark (307) is set directly below the positioning groove (306), the positioning mark (307) is fixedly connected to the top of the dialysis main tube (203), and the chuck (308) is fixedly installed inside the dialysis main tube (203).

2. The anti-pressure device for hemodialysis catheter according to claim 1, characterized in that: The anti-pressure component (3) further includes a second base (309), a positioning block (310), an arc-shaped top block (311), and an arc-shaped downward pressing block (312). The second base (309) is fixedly connected to the top of the breathable dressing (301). The positioning block (310) is fixedly connected to the top of the second base (309). The arc-shaped top block (311) is fixedly connected to the top of the positioning block (310). The arc-shaped downward pressing block (312) is fixedly connected to the bottom of the arc-shaped cover plate (305). The positions of the arc-shaped downward pressing block (312) and the arc-shaped top block (311) correspond to the slots of the retaining roller (308).

3. The anti compression device for hemodialysis catheter according to claim 2, wherein: The caliper (308) has an annular groove at the point where it fits against the inner wall of the dialysis tube (203), and the size of the annular groove is adapted to the shape of the arc-shaped lower pressure block (312) and the arc-shaped top block (311).

4. The anti-pressure device for hemodialysis catheter according to claim 2, characterized in that: The positioning groove (306) has the same width as the positioning mark (307), and when the positioning groove (306) and the positioning mark (307) coincide, the arc-shaped pressing block (312) and the arc-shaped top block (311) press the dialysis tube (203) until it deforms and then engages with the annular groove of the caliper (308).

5. The anti compression device for hemodialysis catheter according to claim 1, wherein: The dialysis catheter assembly (2) also includes a bifurcation tube (201), a bundle block (202), and a puncture tube (204). The bifurcation tube (201) is connected to the dialysis main tube (203) through the bundle block (202), and the puncture tube (204) is connected to the patient's internal dialysis catheter.

Images