A combined urinary catheter device for heart and kidney department nursing

Abstract

This invention discloses a combined catheterization device for cardiology and nephrology nursing, belonging to the field of medical device technology. It includes a catheter, a catheter tip, and a balloon. The catheter tip is located at the insertion end of the catheter, and a telescopic mechanism is provided inside the insertion end of the catheter. The catheter tip is located at the moving end of the telescopic mechanism, and the balloon is wrapped around the outer surface of the moving end of the telescopic mechanism. It also includes a pneumatic mechanism located inside the catheter, which connects the balloon to the air chamber of the telescopic mechanism. This combined catheterization device for cardiology and nephrology nursing, through the innovative design of the telescopic and pneumatic mechanisms, achieves automatic contraction and expansion control of the balloon, effectively reducing irritation and damage to the urethra during catheterization and improving the safety and comfort of catheterization. Simultaneously, the device integrates catheterization, flushing, and automatic adjustment functions, making it suitable for various clinical scenarios and showing good application prospects.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a combined urinary catheterization device for cardiology and nephrology nursing. Background Technology

[0002] In clinical nursing practice, urinary catheterization is a common and important basic nursing procedure, widely used in various departments such as cardiology, nephrology, urology, and intensive care. Especially for patients with heart or kidney dysfunction, urinary retention, postoperative patients, or critically ill patients requiring precise monitoring of urine output, catheterization not only alleviates urinary difficulties but also provides crucial information for condition assessment and treatment. However, traditional catheterization devices still have certain technical deficiencies in their structural design, affecting their safety and comfort during clinical use.

[0003] Currently, the most widely used urinary catheters are Foley catheters, whose structure mainly includes the catheter body, drainage cavity, balloon cavity, and a balloon at the end of the catheter. The balloon is usually directly fitted onto the outer surface of the catheter and is fixed in the bladder by inflation or fluid filling. However, this design has revealed some problems in clinical practice. First, because the balloon is directly fitted onto the outer wall of the catheter, it may not completely conform to the catheter body during insertion, leading to an increased local volume and uneven overall outer diameter of the catheter. This increases friction when passing through the urethra, easily causing mechanical irritation and damage to the urethral mucosa. Especially in male patients, the urethra is longer and has physiological curvature, resulting in greater resistance when the catheter passes through. The presence of the balloon makes it more likely to cause complications such as pain, bleeding, and even false passage formation in the urethra. Second, during catheterization, if the operator fails to accurately determine whether the catheter has fully entered the bladder and inflates the balloon prematurely, the balloon may become stuck in the urethra, causing severe urethral compression or even injury. Therefore, a combined catheterization device for cardiology and nephrology nursing is proposed. Summary of the Invention

[0004] In view of the obvious defects in the existing technology where the balloon is directly sleeved on the outer wall of the urinary catheter, the local volume may increase due to incomplete fitting of the tube body during the insertion process, which can easily cause mechanical irritation and damage to the urethral mucosa. The purpose of this invention is to provide a combined urinary catheterization device for cardiology and nephrology nursing.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A combined urinary catheterization device for cardiology and nephrology nursing includes a urinary catheter, a catheter tip, and a balloon. The catheter tip is located at the insertion end of the urinary catheter, and a telescopic mechanism is provided inside the insertion end of the urinary catheter. The catheter tip is located at the moving end of the telescopic mechanism, and the balloon is wrapped around the outer surface of the moving end of the telescopic mechanism.

[0007] It also includes a pneumatic mechanism disposed inside the catheter, the pneumatic mechanism connecting the balloon and the air chamber of the telescopic mechanism, the pneumatic mechanism enabling the moving end of the telescopic mechanism to be removed from the catheter and enabling the balloon to inflate.

[0008] Optionally, the telescopic mechanism includes a groove disposed within the insertion end of the catheter, a movable rod disposed inside the groove, the movable rod being configured as an inverted T-shape, the lower part of the movable rod slidingly and sealingly engaging with the groove, the upper part of the movable rod penetrating the catheter and being fixedly connected to the catheter head, the balloon being wrapped around the outer surface of the movable rod, and a limit spring being fixedly connected between the movable rod and the groove.

[0009] Optionally, the length of the movable rod is set to 2-5 cm.

[0010] Optionally, the pneumatic mechanism includes an air delivery channel inside the catheter, an air cavity is formed between the bottom of the moving rod and the inner surface of the slide groove, the air delivery channel is connected to the air cavity, an inflation channel is provided inside the moving rod, and the inflation channel connects the air cavity and the air bag, a groove is provided at one end of the inflation channel that connects to the air cavity, and a sealing element is provided inside the groove, the sealing element being used to control the opening and closing of the inflation channel and the air cavity.

[0011] Optionally, the sealing component includes a plug block movably installed inside the groove. A support rod is fixedly connected to the upper surface of the plug block. The upper end of the support rod passes through the movable rod, and a support spring is sleeved on the outer surface of the movable rod. The upper end of the support spring is fixedly connected to the upper end of the support rod, and the lower end of the support spring is fixedly connected to the movable rod.

[0012] Optionally, when the moving rod moves to the top of the groove, the support rod moves downward relative to the moving rod, causing the block to move out of the groove.

[0013] Optionally, it also includes a catheterization mechanism, which includes a catheterization channel formed inside the catheter, catheter tip and moving rod, and an elastic tube is fixedly connected between the moving rod and the catheterization channel of the catheter.

[0014] Optionally, it also includes a flushing cavity located on one side of the catheter, wherein a water outlet valve is provided inside the flushing end of the flushing cavity.

[0015] Optionally, the catheter tip has an alignment channel inside, which is aligned with the port of the flushing cavity, and both the alignment channel and the port of the urinary catheter channel are provided with a water inlet valve.

[0016] Optionally, the catheter channel is provided with a movable groove, which is located below the connection between the alignment channel and the catheter channel, and a movable block is provided inside the movable groove. A vertical groove is provided on the lower surface of the catheter head, and a vertical rod is slidably connected inside the vertical groove. A connecting spring is provided inside both the vertical groove and the movable groove. The connecting spring keeps the movable block from obstructing the catheter channel when there is no external force. A connecting rope is fixedly connected between the movable block and the vertical rod, and the connecting rope slides through the inner wall of the catheter head.

[0017] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects:

[0018] In the above solution, the balloon is kept in a contracted state during catheter insertion by the cooperation of the telescopic mechanism and the pneumatic mechanism, thereby reducing the outer diameter of the catheter, reducing urethral friction, and reducing irritation and damage to the urethral mucosa.

[0019] In this invention, after the urinary catheter is inserted into the bladder, a pneumatic mechanism is used to move the balloon out of the urinary catheter and inflate the balloon, thereby fixing the urinary catheter and preventing it from falling out due to patient activity or bladder contraction, thus improving the stability and safety of the catheterization.

[0020] By setting up an irrigation channel on one side of the catheter, the irrigation fluid can directly enter the bladder, facilitating bladder irrigation, preventing infection and catheter blockage, and is suitable for patients with long-term indwelling catheters; and by setting up an alignment channel, it is easy to determine the insertion position of the irrigation channel, so that the irrigation tube opening of the irrigation channel is located proximal to the bladder outlet. Attached Figure Description

[0021] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0024] Figure 3 This is a schematic diagram of the pneumatic mechanism of the present invention;

[0025] Figure 4 For the present invention Figure 2 Enlarged view of point A in the image;

[0026] Figure 5 This is a schematic diagram of the structure of the airbag of the present invention during inflation;

[0027] Figure 6This is a schematic diagram of the structure of the present invention when the plug is removed from the groove;

[0028] Figure 7 This is a cross-sectional view of the catheter tip of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure when the vertical rod of the present invention is removed from the vertical groove.

[0030] [Figure Labels]

[0031] 1. Urinary catheter;

[0032] 2. Catheter tip;

[0033] 3. Airbags;

[0034] 4. Telescopic mechanism; 41. Slide groove; 42. Moving rod; 43. Limiting spring; 44. Air chamber.

[0035] 5. Urinary catheterization mechanism; 51. Urinary catheterization channel; 52. Elastic tube; 53. Inlet valve; 54. Alignment channel; 541. Alignment port; 55. Moving block; 56. Connecting rope; 57. Connecting spring; 58. Vertical rod; 59. Vertical groove.

[0036] 6. Pneumatic mechanism; 61. Air supply channel; 62. Air filling channel; 63. Block; 64. Support spring; 65. Support rod; 66. Groove;

[0037] 7. Flushing cavity; 71. Flushing port;

[0038] 8. Water outlet valve.

[0039] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0040] The present invention provides a combined urinary catheterization device for cardiology and nephrology nursing, described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0041] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0042] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0043] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0044] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0045] like Figure 1 and Figure 2As shown, this embodiment of the invention provides a combined urinary catheterization device for cardiology and nephrology nursing, including a urinary catheter 1, a catheter head 2, and a balloon 3. The catheter head 2 is disposed at the insertion end of the urinary catheter 1, and a telescopic mechanism 4 is disposed inside the insertion end of the urinary catheter 1. The catheter head 2 is disposed at the moving end of the telescopic mechanism 4, and the balloon 3 is disposed on the outer surface of the moving end of the telescopic mechanism 4. It also includes a pneumatic mechanism 6 disposed inside the urinary catheter 1. The pneumatic mechanism 6 connects the balloon 3 and the air chamber 44 of the telescopic mechanism 4. The pneumatic mechanism 6 can move the moving end of the telescopic mechanism 4 out of the urinary catheter 1 and can inflate the balloon 3.

[0046] In this embodiment, the insertion end of the catheter 1 is configured as a retractable catheter head 2 structure, and the balloon 3 is automatically deployed and contracted through the pneumatic mechanism 6, thereby effectively reducing the stimulation of the urethra and bladder during catheterization and improving the safety and comfort of the catheterization operation.

[0047] like Figure 2 and Figure 3 As shown, the telescopic mechanism 4 includes a groove 41 disposed in the insertion end of the catheter 1. A movable rod 42 is disposed inside the groove 41. The movable rod 42 is configured as an inverted T-shape, and the lower part of the movable rod 42 is slidably sealed with the groove 41. The upper part of the movable rod 42 passes through the catheter 1 and is fixedly connected to the catheter head 2. The balloon 3 is wrapped around the outer surface of the movable rod 42. A limit spring 43 is fixedly connected between the movable rod 42 and the groove 41.

[0048] In practice, medical staff slowly insert the catheter 1 along the urethra. At this time, the balloon 3 is in a contracted state, closely attached to the outer surface of the moving rod 42 and located inside the catheter 1, avoiding urethral friction damage due to sudden increase in volume. After the catheter 1 enters the bladder, medical staff inject gas into the catheter 1 through the pneumatic mechanism 6, pushing the moving rod 42 upward. The moving rod 42 has an inverted T-shaped structure, with its lower part slidingly and sealingly engaged with the groove 41, and its upper part fixedly connected to the catheter tip 2. As the moving rod 42 moves upward, the catheter tip 2 gradually extends from the end of the catheter 1, while the balloon 3 gradually inflates as the moving rod 42 moves out of the catheter 1.

[0049] like Figures 2 to 6 As shown, the pneumatic mechanism 6 includes an air delivery channel 61 opened inside the catheter 1. An air cavity 44 is formed between the bottom of the moving rod 42 and the inner surface of the sliding groove 41. The air delivery channel 61 is connected to the air cavity 44. An inflation channel 62 is opened inside the moving rod 42, and the inflation channel 62 connects the air cavity 44 and the airbag 3. A groove 66 is opened at one end of the inflation channel 62 that is connected to the air cavity. A sealing element is provided inside the groove 66. The sealing element is used to control the opening and closing of the inflation channel 62 and the air cavity.

[0050] like Figure 4 As shown, the sealing component includes a blocking block 63 movably installed inside the groove 66. A support rod 65 is fixedly connected to the upper surface of the blocking block 63. The upper end of the support rod 65 passes through the moving rod 42, and a support spring 64 is sleeved on the outer surface of the moving rod 42. The upper end of the support spring 64 is fixedly connected to the upper end of the support rod 65, and the lower end of the support spring 64 is fixedly connected to the moving rod 42. When the moving rod 42 moves to the top of the slide groove 41, the support rod 65 moves downward relative to the moving rod 42, causing the blocking block 63 to move out of the groove 66.

[0051] In this embodiment, medical staff inflate the air chamber through the air delivery channel 61, pushing the moving rod 42 to move. When the moving rod 42 rises to the top of the slide groove 41, the support rod 65 moves downward due to the force, causing the block 63 to move out of the groove 66 (e.g., Figure 6 As shown), the inflation channel 62 is opened, and gas is inflated into the airbag 3 through the gas delivery channel 61 and the inflation channel 62, causing the airbag 3 to expand further. The airbag 3 can then fix the urinary catheter 1 in the bladder, forming a stable fixed structure and preventing the urinary catheter 1 from slipping out.

[0052] like Figure 2 and Figure 3 It also includes a catheterization mechanism 5, which includes a catheterization channel 51 opened inside the catheter 1, the catheter head 2 and the moving rod 42. An elastic tube 52 is fixedly connected between the moving rod 42 and the catheterization channel 51 of the catheter 1.

[0053] In this embodiment, the urinary catheterization channel 51 passes through the urinary catheter 1, the catheter tip 2, and the movable rod 42. The urinary catheterization pathway between the urinary catheter 1 and the movable rod 42 is connected by the elastic tube 52. During the catheterization process, urine enters the urinary catheter 1 through the urinary catheterization channel 51 of the catheter tip 2 and eventually flows into the drainage bag.

[0054] like Figure 3 as well as Figure 6 It also includes a flushing channel 7 located on one side of the urinary catheter 1. The flushing end of the flushing channel 7 is equipped with a water outlet valve 8. Medical staff inject saline solution into the bladder through the flushing channel 7 to flush the bladder and prevent infection or blockage. The flushed saline solution flows out of the bladder through the catheter head 2 and the urinary catheter channel 51.

[0055] like Figure 7 and Figure 8The catheter head 2 has an alignment channel 54 inside, and an alignment port 541 at one end of the alignment channel 54. The flushing cavity 7 has a flushing port 71 at one end. The alignment port 541 and the flushing port 71 are at the same height, creating an alignment between the alignment channel 54 and the flushing cavity 7. Both the alignment channel 54 and the flushing cavity 7 have inlet valves 53 inside their ports. Furthermore, the flushing cavity 51 has a moving groove 510, and a moving block 55 is installed inside the moving groove 510. The lower surface of the catheter head 2 has a vertical groove 59, and a vertical rod 58 is slidably connected inside the vertical groove 59. Both the vertical groove 59 and the moving groove 510 have connecting springs 57 inside. One spring 57 connects to the moving groove 510 and the moving block 55 at both ends, and the other spring 57 connects to the vertical groove 59 and the vertical rod 58 at both ends. The connecting springs 57 ensure that the moving block 55 does not obstruct the flushing cavity 51 when no external force is applied (e.g., ...). Figure 8 As shown in the figure, a connecting rope 56 is fixedly connected between the movable block 55 and the vertical rod 58, and the connecting rope 56 slides through the inner wall of the guide tube head 2.

[0056] In this embodiment, the outlet valve 8 inside the irrigation cavity 7, the inlet valve 53 inside the catheterization channel 51, and the alignment channel 54 are all one-way valves. The outlet valve 8 only allows saline or medication to enter the bladder through the irrigation cavity 7; the inlet valve 53 only allows urine from the bladder to be discharged through the catheterization channel 51 and the alignment channel 54. Currently, in clinical practice, to ensure the effectiveness of bladder irrigation, the irrigation port of the irrigation cavity 7 is positioned proximal to the bladder outlet. In this embodiment, by setting the alignment channel 54, it can be ensured that the irrigation port of the irrigation cavity 7 is precisely located proximal to the bladder outlet when the catheter 1 is inserted.

[0057] Specifically, the alignment channel 54 is aligned with the opening of the flushing cavity 7. That is, when the alignment channel 54 enters the bladder, urine is discharged through the alignment channel 54. When medical staff observe urine being discharged during insertion, it indicates that the flushing cavity 7 and the alignment channel 54 are located at the bladder outlet.

[0058] In addition, to prevent urine from being discharged through the catheter channel 51 and affecting the position of the flushing cavity 7, a mechanism such as a moving block 55 and a vertical rod 58 is set up. When the moving rod 42 is not moved out of the catheter 1, the vertical rod 58 is restricted inside the vertical groove 59 by the action of the catheter 1. The moving block 55 blocks the catheter channel 51, so that urine is discharged through the catheter channel 51 and affects the insertion position of the flushing cavity 7.

[0059] Once the location of the flushing cavity 7 is confirmed, medical staff use the pneumatic mechanism 6 to move the moving rod 42 out of the catheter 1. The length of the moving rod 42 is set to 2-5cm, which is just enough to place the catheter head 2 in the trigone of the bladder, ensuring smooth drainage of urine and reducing residual urine. At the same time, the vertical rod 58 is no longer restricted by the catheter 1 and moves out of the vertical groove 59, driving the connecting rope 56 and the moving block 55 to move, so that the moving block 55 no longer blocks the catheter channel 51, ensuring the normal urination and drainage function of the catheter channel 51.

[0060] This invention utilizes the cooperation of the telescopic mechanism 4 and the pneumatic mechanism 6 to keep the balloon 3 in a contracted state during the insertion of the catheter 1, reducing the outer diameter of the catheter 1 and thus reducing urethral friction and irritation and damage to the urethral mucosa. After the catheter 1 enters the bladder, the pneumatic mechanism 6 moves the balloon 3 out of the catheter 1 and inflates it, thus fixing the catheter 1 and preventing it from falling out due to patient activity or bladder contraction, improving the stability and safety of catheterization. In addition, a flushing channel 7 is provided on one side of the catheter 1, allowing flushing fluid to directly enter the bladder for easy bladder irrigation, preventing infection and catheter 1 blockage, and is suitable for patients with long-term indwelling catheters. Furthermore, by providing an alignment channel 54, the insertion position of the flushing channel 7 is determined, ensuring that the flushing port of the flushing channel 7 is located proximal to the bladder outlet.

[0061] This invention provides a combined catheterization device for cardiology and nephrology nursing. Through the innovative design of the telescopic mechanism 4 and the pneumatic mechanism 6, it achieves automatic contraction and expansion control of the balloon 3, effectively reducing irritation and damage to the urethra during catheterization and improving the safety and comfort of catheterization. Simultaneously, the device integrates catheterization, flushing, and automatic adjustment functions, making it suitable for various clinical scenarios and showing promising application prospects.

[0062] In summary, this invention, through its scientific and rational structural design and functional integration, effectively solves the problems of ineffective venom diffusion control, restricted blood flow, and lack of venom removal mechanisms in existing technologies, providing a highly efficient, safe, and convenient emergency treatment device with significant technical advantages and practical application value.

[0063] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0064] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A combined urinary catheterization device for cardiology and nephrology nursing, comprising a catheter, a catheter tip, and a balloon, characterized in that: The catheter tip is located at the insertion end of the urinary catheter, and a telescopic mechanism is provided inside the insertion end of the urinary catheter. The catheter tip is located at the moving end of the telescopic mechanism, and the balloon is wrapped around the outer surface of the moving end of the telescopic mechanism. It also includes a pneumatic mechanism installed inside the catheter, which connects the balloon and the air chamber of the telescopic mechanism. The pneumatic mechanism enables the moving end of the telescopic mechanism to be removed from the catheter and enables the balloon to inflate. The telescopic mechanism includes a groove disposed inside the insertion end of the urinary catheter, a movable rod disposed inside the groove, the movable rod being configured as an inverted T-shape, the lower part of the movable rod slidingly sealingly engaging with the groove, the upper part of the movable rod penetrating the urinary catheter and being fixedly connected to the catheter head, the balloon being wrapped around the outer surface of the movable rod, and a limit spring being fixedly connected between the movable rod and the groove; The pneumatic mechanism includes an air delivery channel inside the catheter. An air cavity is formed between the bottom of the moving rod of the telescopic mechanism and the inner surface of the groove. The air delivery channel is connected to the air cavity. An inflation channel is provided inside the moving rod, and the inflation channel connects the air cavity and the air bag. A groove is provided at one end of the inflation channel that connects to the air cavity. The sealing component includes a plug block that is movably installed inside the groove. A support rod is fixedly connected to the upper surface of the plug block. The upper end of the support rod passes through the moving rod, and a support spring is sleeved on the outer surface of the moving rod. The upper end of the support spring is fixedly connected to the upper end of the support rod, and the lower end of the support spring is fixedly connected to the moving rod.

2. The combined catheterization device for cardiology and nephrology nursing according to claim 1, characterized in that: The length of the movable rod is set to 2-5cm.

3. The combined catheterization device for cardiology and nephrology nursing according to claim 1, characterized in that: When the moving rod moves to the top of the groove, the support rod moves downward relative to the moving rod, causing the block to move out of the groove.

4. The combined catheterization device for cardiology and nephrology nursing according to claim 1, characterized in that: It also includes a catheterization mechanism, which includes a catheterization channel formed inside the catheter, catheter head and moving rod, and an elastic tube is fixedly connected between the moving rod and the catheterization channel of the catheter.

5. The combined catheterization device for cardiology and nephrology nursing according to claim 4, characterized in that: It also includes a flushing channel located on one side of the catheter, wherein a water outlet valve is provided inside the flushing end of the flushing channel.

6. The combined catheterization device for cardiology and nephrology nursing according to claim 5, characterized in that: The catheter tip has an alignment channel inside, which is aligned with the port of the flushing cavity. Both the alignment channel and the port of the urinary catheter channel are equipped with water inlet valves.

7. The combined catheterization device for cardiology and nephrology nursing according to claim 6, characterized in that: The catheter channel is provided with a movable groove, which is located below the connection between the alignment channel and the catheter channel. A movable block is provided inside the movable groove. A vertical groove is provided on the lower surface of the catheter head. A vertical rod is slidably connected inside the vertical groove. A connecting spring is provided inside both the vertical groove and the movable groove. The connecting spring keeps the movable block from obstructing the catheter channel when there is no external force. A connecting rope is fixedly connected between the movable block and the vertical rod. The connecting rope slides through the inner wall of the catheter head.

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