A urinary catheter

Abstract

The present application relates to the technical field of medical care in general, in particular to a urinary catheter, comprising a catheter body, a first air bag, an inflation channel and a negative pressure indicating channel, the first air bag is in a suction disc shape in a full state and is sleeved on the catheter body near one end of a urine inlet; the inflation channel is in communication with the first air bag for inflating or liquid filling of the first air bag; the negative pressure indicating channel is provided with a suction inlet at one end, and the suction inlet is arranged below the first air bag. The first air bag is inflated or liquid filled by the inflation channel, so that the first air bag is fully expanded, the first air bag is downwardly inverted and covers the bladder opening, the negative pressure indicating channel generates negative pressure, a negative pressure interval is formed below the first air bag through the suction inlet, the first air bag is firmly adsorbed downward due to the negative pressure below, so as to offset the upward floating force generated by urine, urine leakage is avoided, the fixation of the catheter body is more stable, the urethra is not pulled, and the occurrence of urethritis and discomfort is reduced.

Description

Technical Field

[0001] This invention generally relates to the field of medical care technology, and more specifically, to a urinary catheter. Background Technology

[0002] A urinary catheter is a tube made of natural rubber, silicone rubber, or polyvinyl chloride (PVC) that is inserted into the bladder through the urethra to drain urine. After insertion into the bladder, the catheter is connected to a urine bag to collect the urine. Existing urinary catheters typically consist of a catheter body, a balloon at one end, and a urinary outlet at the other end. The urinary outlet is connected to a balloon inflation catheter that communicates with an inflation tubing.

[0003] Currently, because the balloon is filled with gas, even when liquid is filled, the gas in the inflation catheter cannot be completely emptied, resulting in gas remaining inside the balloon. In this case, the balloon density is less than that of urine. When the balloon is located in the bladder, it will be lifted upwards by the buoyancy of the urine, causing the balloon to shift. A gap will appear between the balloon and the bladder opening, and urine will flow into the urethra through this gap, easily causing urethral inflammation. At the same time, the displacement of the balloon will also cause the catheter to shift, thus pulling on the urethra. Since the urethra is very sensitive, this can easily cause urethral discomfort. Summary of the Invention

[0004] This application provides a urinary catheter to solve the technical problems of urine leakage and catheter displacement caused by balloon buoyancy.

[0005] This application provides a urinary catheter, including a catheter body, a first balloon, an inflation channel, and a negative pressure indicator channel. The first balloon, when inflated, is shaped like a suction cup and is fitted onto the catheter body at the end near the inlet. The inflation channel communicates with the first balloon for inflating or filling the first balloon with fluid. One end of the negative pressure indicator channel is provided with a suction port, which is located below the first balloon.

[0006] According to some embodiments of the present invention, a second airbag is also included, which is inflated in a ring shape and is fitted over the catheter body below the suction port.

[0007] According to some embodiments of the present invention, the second airbag is connected to the inflation channel, and the inflation channel is used to inflate or fill the second airbag with liquid.

[0008] According to some embodiments of the present invention, the catheter body includes an inner tube and an outer tube, the inner tube and the outer tube being nested together, the outer tube and the inner tube being separated by a partition and serving as an inflation channel and a negative pressure indication channel respectively, and the inner tube serving as a drainage channel.

[0009] According to some embodiments of the present invention, multiple suction ports are provided at equal intervals along the circumferential direction of the catheter body, and the negative pressure indicator channel is divided by a partition into multiple independent channels corresponding to the suction ports.

[0010] According to some embodiments of the present invention, one end of the catheter body is bullet-shaped, and the inlet is evenly distributed on the side wall of the catheter body.

[0011] According to some embodiments of the present invention, the end of the catheter body is provided with the urine inlet.

[0012] According to some embodiments of the present invention, a striped ring is provided at the bottom of the first airbag.

[0013] According to some embodiments of the present invention, the inflation channel is connected to the inflation assembly, the negative pressure indicator channel is connected to the negative pressure assembly, and the catheter body is connected to the drainage assembly.

[0014] According to some embodiments of the present invention, the inflation component is an inflatable airbag, the negative pressure component is a syringe, and the drainage component is a drainage bag.

[0015] As can be seen from the above technical solution, the advantages and positive effects of the urinary catheter of the present invention are as follows: This application inserts one end of the urinary catheter body into the patient's bladder, and then inflates or fills the first balloon with liquid through the inflation channel, so that the first balloon is fully expanded. The first balloon is in the inflated state and is shaped like a suction cup. The first balloon is inverted downward and covers the bladder opening. The negative pressure indicator channel generates negative pressure, and a negative pressure zone is formed below the first balloon through the suction port. Due to the negative pressure below, the first balloon will be firmly sucked downward, thereby counteracting the upward buoyancy of urine and preventing urine leakage. At the same time, it makes the fixation of the urinary catheter body more stable, avoids traction on the urethra, and reduces the occurrence of urethral inflammation and discomfort. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a urinary catheter disclosed in an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the AA cross-section of a urinary catheter disclosed in an embodiment of this application;

[0019] Figure 3This is a schematic diagram of the BB cross-section of a urinary catheter disclosed in an embodiment of this application;

[0020] Figure 4 This is a schematic diagram of the CC cross-section of a urinary catheter disclosed in an embodiment of this application;

[0021] Figure 5 This is a schematic diagram of the initial state of a urinary catheter disclosed in an embodiment of this application;

[0022] Figure 6 This is a schematic diagram of the usage status of a urinary catheter disclosed in an embodiment of this application;

[0023] Figure 7 This is a schematic diagram of the overall structure of a urinary catheter disclosed in an embodiment of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Catheter body; 2. First balloon; 10. Inlet; 3. Inflation channel; 4. Negative pressure indicator channel; 40. Suction port; 5. Second balloon; 11. Inner tube; 12. Outer tube; 13. Drainage channel; 6. Inflation assembly; 7. Negative pressure assembly; 8. Drainage assembly; 90. Bladder wall; 91. Urethral wall. Detailed Implementation

[0026] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application. This application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0027] These embodiments are provided to make the application thorough and complete, and to fully express the scope of the application to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​illustrated in these embodiments should be interpreted as merely exemplary and not as limiting.

[0028] It should be noted that, in the description of this application, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] Furthermore, the terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well.

[0030] It should also be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" 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 depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0031] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0032] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0033] like Figure 1As shown, an embodiment of a urinary catheter includes a catheter body 1, a first balloon 2, an inflation channel 3, and a negative pressure indicator channel 4. The first balloon 2, when inflated, is shaped like a suction cup and is fitted onto the catheter body 1 near the inlet 10. The inflation channel 3 communicates with the first balloon 2 for inflating or filling it with fluid. The negative pressure indicator channel 4 has a suction port 40 at one end, located below the first balloon 2. The diameter of the catheter body 1 is typically smaller than the diameter of the urethra to facilitate insertion and reduce urethral damage. This also places higher demands on the sealing of the bladder opening during drainage to prevent urine leakage and urethral inflammation. It is particularly important to note that drainage is usually necessary because urethral injury and urine entering the urethra can cause inflammation and hinder recovery. The first airbag 2 used in this application, being suction-cup shaped when inflated, can effectively cover the bladder opening after fixation. Furthermore, the pressure of urine will firmly secure it to the bladder opening. The negative pressure indicator channel 4 serves two purposes: firstly, it provides conditions for creating negative pressure below the first airbag 2, making the adhesion tighter and preventing loosening; secondly, even if the first airbag 2 shifts, leaked urine will flow from the suction port 40 into the negative pressure indicator channel 4 and out of the body along with it, preventing urine from directly entering the urethra. Moreover, the urine flowing out of the negative pressure indicator channel 4 will alert medical staff, serving both as a temporary treatment and a reminder, facilitating early detection and correction by medical personnel.

[0034] like Figure 5 and Figure 6 As shown, in use, this application inserts one end of the catheter body 1 (inlet 10) into the patient's bladder. The first balloon 2 is then inflated or filled with liquid via the inflation channel 3. Inflation can be either air or liquid, or a mixture of both, causing the first balloon 2 to fully expand. In its inflated state, the first balloon 2 resembles a suction cup, inverted downwards to abut against the bladder wall 90, and covering the bladder opening. The negative pressure indicator channel 4 generates negative pressure, creating a negative pressure zone below the first balloon 2 through the suction port 40. Due to this negative pressure, the first balloon 2 firmly adheres to the bladder wall 90, thus counteracting the upward buoyancy of urine and preventing leakage. Simultaneously, it makes the catheter body 1 more stable, preventing traction on the urethra and reducing the occurrence of urethral inflammation and discomfort. It should be noted that without the second balloon 5, the negative pressure indicator channel 4 may need to continuously generate negative pressure to compensate for pressure loss.

[0035] like Figure 1 , Figure 5 and Figure 6As shown, in some embodiments of the present invention, a second balloon 5 is further included. The second balloon 5, when inflated, is ring-shaped and fitted onto the catheter body 1 below the suction port 40. By adding the second balloon 5, after the catheter body 1 is inserted into the patient's bladder at the inlet 10, the second balloon 5 inflates. In the inflated state, the second balloon 5 contacts the urethral wall 91, thereby sealing the urethra. This prevents urine from continuing to leak downwards in case of leakage and facilitates the formation of a negative pressure zone above. In this case, the negative pressure indicator channel 4 does not need to continuously generate negative pressure; it only needs to maintain negative pressure. Preferably, the second balloon 5 is fitted onto the catheter body 1 approximately 1 cm below the suction port 40. It is particularly important to note that the contact between the second balloon 5 and the urethral wall 91 should not be excessive, as this can easily cause urethral discomfort and only serve as a seal, failing to achieve a secure function.

[0036] In some embodiments of the present invention, the second airbag 5 is connected to the inflation channel 3, which is used to inflate or fill the second airbag 5 with liquid. The inflation channel 3 can be connected to both the first airbag 2 and the second airbag 5 simultaneously, allowing for simultaneous inflation of both airbags, which facilitates operation and saves space. The second airbag 5 can be inflated or filled with liquid through the inflation channel 3; either inflating or filling with liquid, or a mixture of both, is possible. The above are preferred embodiments of this application. The inflation channels 3 of the first airbag 2 and the second airbag 5 can also be independent of each other. All such modifications should be included within the scope of protection of this application.

[0037] like Figures 1-4 As shown, in some embodiments of the present invention, the catheter body 1 includes an inner tube 11 and an outer tube 12, which are nested together. The outer tube 12 is separated from the inner tube 11 by a partition and serves as an inflation channel 3 and a negative pressure indicator channel 4, respectively. The inner tube 11 serves as a drainage channel 13. The negative pressure indicator channel 4 occupies a larger portion of the space, while the inflation channel 3 only requires a small portion. In a preferred embodiment, the inflation channel 3 is formed by an arc-shaped partition and the wall of the outer tube 12 to form an elliptical channel, which extends along its length and covers the inflation port of the first airbag 2, the inflation port of the second airbag 5, and the inflation port connecting to the inflation assembly 6. Its two ends are sealed to form an independent channel. The negative pressure indicator channel 4 is mainly formed by the inner tube 11, the outer tube 12, and the partitions at both ends. Its cross-section is C-shaped to facilitate coverage of multiple suction ports 40.

[0038] like Figure 3As shown, in some embodiments of the present invention, multiple suction ports 40 are equally spaced along the circumferential direction of the catheter body 1, and the negative pressure indicating channel 4 is divided into multiple independent channels corresponding to the suction ports 40 by partitions. The multiple suction ports 40 are equally spaced along the circumferential direction of the catheter body 1, so even if some suction ports 40 become blocked, others can still provide negative pressure, preventing structural failure. Multiple suction ports 40 can also be arranged in the longitudinal direction; this application does not impose any limitations. Dividing the negative pressure indicating channel 4 into multiple channels by partitions also provides a certain degree of anti-blocking effect, preventing impurities from entering the negative pressure indicating channel 4 and causing complete blockage, providing a redundant design solution. The independent channels at the bottom of the negative pressure indicating channel 4 can communicate with each other, ultimately connecting to the connection port of the negative pressure component 7.

[0039] like Figure 1 As shown, in some embodiments of the present invention, one end of the catheter body 1 is bullet-shaped, and the inlet 10 is evenly distributed on the sidewall of the catheter body 1. The bullet-shaped end of the catheter body 1 facilitates its passage through the urethra during insertion; while the inlet 10, located on the sidewall of the catheter body 1, ensures a horizontal flow of fluid, allowing catheterization to begin from the bottom of the bladder and carrying away sediment, thus reducing sediment retention.

[0040] In some embodiments of the present invention, the end of the catheter body 1 is provided with a urine inlet 10 (not shown in the figure). The urine inlet 10 at the end is an alternative solution; during drainage, it can increase the efficiency of catheterization. When not used for drainage, it also expands the catheter's other uses; for example, the catheter can also be used as an irrigation tube, with the urine inlet 10 at the end serving as the outlet for bladder irrigation. All related functions achieved using this structure should be included within the scope of protection of this application, and will not be listed here individually.

[0041] In some embodiments of the present invention, the bottom of the first airbag 2 is provided with a striped ring. The striped ring at the bottom of the first airbag 2 is similar to multiple annular pleats, which can both increase the friction at the bottom and improve the airtightness.

[0042] like Figure 7 As shown, in some embodiments of the present invention, the inflation channel 3 is connected to the inflation assembly 6, the negative pressure indicator channel 4 is connected to the negative pressure assembly 7, and the catheter body 1 is connected to the drainage assembly 8. The inflation assembly 6 can be an air pump, syringe, inflatable balloon, etc. If liquid is to be inflated, it can be injected using a syringe. The negative pressure indicator channel 4 can be a negative pressure machine, suction pump, syringe, etc. The drainage assembly 8 includes a drainage bag, drainage bottle, etc.

[0043] In some embodiments of the present invention, the inflation component 6 is an inflatable airbag, the negative pressure component 7 is a syringe, and the drainage component 8 is a drainage bag. The inflation component 6, using an inflatable airbag, is convenient to use; inflation is achieved by squeezing the airbag. The negative pressure component 7, using a syringe, creates negative pressure by pulling the syringe outwards. When urine leaks, the leaked urine enters the syringe barrel through the negative pressure indicator channel 4, facilitating early observation by medical personnel. The drainage component 8, using a drainage bag, also includes other accessories such as a three-way valve, which will not be described in detail here.

[0044] The embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0045] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any manner.

Claims

1. A urinary catheter, comprising a catheter body (1), characterized in that, include: The first airbag (2) is inflated and has a suction cup shape, and is fitted on the end of the catheter body (1) near the inlet (10); An inflation channel (3) is connected to the first airbag (2) for inflating or filling the first airbag (2) with liquid. A negative pressure indicator channel (4) is provided at one end of which is an inlet (40), which is located below the first airbag (2).

2. The urinary catheter according to claim 1, characterized in that: It also includes a second airbag (5), which is inflated in a ring shape and is fitted around the catheter body (1) below the suction port (40).

3. The urinary catheter according to claim 2, characterized in that: The second airbag (5) is connected to the inflation channel (3), which is used to inflate or fill the second airbag (5) with liquid.

4. The urinary catheter according to claim 1, characterized in that: The catheter body (1) includes an inner tube (11) and an outer tube (12), the inner tube (11) and the outer tube (12) are nested together, the outer tube (12) and the inner tube (11) are separated by a partition and serve as an inflation channel (3) and a negative pressure indication channel (4) respectively, and the inner tube (11) serves as a drainage channel (13).

5. The urinary catheter according to claim 4, characterized in that: The suction port (40) is provided at equal intervals along the circumferential direction of the catheter body (1), and the negative pressure indicator channel (4) is divided by a partition into multiple independent channels corresponding to the suction port (40).

6. The urinary catheter according to claim 1, characterized in that: One end of the catheter body (1) is bullet-shaped, and the inlet (10) is evenly distributed on the side wall of the catheter body (1).

7. The urinary catheter according to claim 1, characterized in that: The catheter body (1) has a urine inlet (10) at its end.

8. The urinary catheter according to claim 1, characterized in that: The bottom of the first airbag (2) is provided with a striped ring.

9. The urinary catheter according to any one of claims 1 to 8, characterized in that: The inflation channel (3) is connected to the inflation assembly (6), the negative pressure indicator channel (4) is connected to the negative pressure assembly (7), and the catheter body (1) is connected to the drainage assembly (8).

10. The urinary catheter according to claim 9, characterized in that: The inflation component (6) is an inflatable airbag, the negative pressure component (7) is a syringe, and the drainage component (8) is a drainage bag.

Images