Urethral catheter

Abstract

The utility model generally relates to the technical field of medical care, in particular to a catheter which comprises a catheter body, a first air bag, an inflation channel and a negative pressure indication channel, and the first air bag is in a sucker shape in the full state and is arranged at the end, close to a urine inlet, of the catheter body in a sleeving mode; the inflation channel is communicated with the first air bag so as to be used for inflating or filling liquid into the first air bag; a suction inlet is formed in one end of the negative pressure indicating channel and located below the first air bag. The first air bag is inflated or filled with liquid through the inflation channel, so that the first air bag is inflated and unfolded, the first air bag is reversely buckled downwards and covers the bladder opening, the negative pressure indication channel generates negative pressure, a negative pressure interval is formed below the first air bag through the suction inlet, the first air bag can firmly adsorb downwards due to the negative pressure below the first air bag, and therefore upward buoyancy generated by urine is counteracted; according to the urethral catheter, urine leakage is avoided, meanwhile, the urethral catheter body is fixed more stably, the urethra is prevented from being dragged, and urethritis and discomfort are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical care technical field in general, specifically, it relates to a catheter. BACKGROUND

[0002] Catheter is a pipeline made of natural rubber, silicone rubber or polyvinyl chloride (PVC), which can be inserted into the bladder through the urethra to drain urine, and the catheter is connected with a urine bag to collect urine after being inserted into the bladder. The structure of the catheter in the prior art comprises a catheter body, one end of the catheter body is provided with a balloon, the other end of the catheter body is an urine outlet, and the urine outlet of the catheter body is connected with a balloon inflation catheter in communication with an inflation pipeline.

[0003] At present, since the balloon is filled with gas, even if liquid is filled, the gas in the inflation catheter cannot be completely emptied, which will also cause the balloon to be filled with gas. At this time, the density of the balloon will be smaller than that of the urine. When the balloon is located in the bladder, it will be lifted upward by the buoyancy of the urine, causing the displacement of the balloon, and a gap will appear between the balloon and the bladder opening. The urine will flow into the urethra from the gap, which is easy to cause inflammation of the urethra. At the same time, the displacement of the balloon will also cause the displacement of the catheter, thereby pulling the urethra. Since the urethra is very sensitive, it is easy to cause discomfort of the urethra. SUMMARY

[0004] The application provides a catheter to solve the technical problems of urine leakage and catheter displacement caused by the upward floating of the balloon.

[0005] The application provides a catheter, which comprises a catheter body, a first gas bag, an inflation channel and a negative pressure indication channel. The first gas bag is in a suction disc shape in a filled state and is sleeved on one end of the catheter body close to an urine inlet. The inflation channel is in communication with the first gas bag for inflating or filling the first gas bag with liquid. One end of the negative pressure indication channel is provided with a suction inlet, and the suction inlet is arranged below the first gas bag.

[0006] According to some embodiments of the application, the catheter further comprises a second gas bag, which is in a ring shape in a filled state and is sleeved below the catheter body close to the suction inlet.

[0007] According to some embodiments of the application, the second gas bag is in communication with the inflation channel, and the inflation channel is used for inflating or filling the second gas bag with liquid.

[0008] According to some embodiments of the application, the catheter body comprises an inner tube and an outer tube, the inner tube and the outer tube are nested, the outer tube and the inner tube are separated by a partition and respectively serve as the inflation channel and the negative pressure indication channel, and the inner tube serves as a drainage channel.

[0009] According to some embodiments of the utility model, the suction port is arranged at equal intervals along the circumferential direction of the catheter body, and the negative pressure indicating channel is divided into multiple independent channels corresponding to the suction ports by a partition.

[0010] According to some embodiments of the utility model, one end of the catheter body is in the shape of a bullet, and the urine inlet ports are uniformly arranged on the side wall of the catheter body.

[0011] According to some embodiments of the utility model, the end of the catheter body is provided with the urine inlet port.

[0012] According to some embodiments of the utility model, the first air bag is provided with a stripe ring at the bottom.

[0013] According to some embodiments of the utility model, the inflation channel is connected with an inflation assembly, the negative pressure indicating channel is connected with a negative pressure assembly, and the catheter body is connected with a drainage assembly.

[0014] According to some embodiments of the utility model, the inflation assembly adopts an inflation air bag, the negative pressure assembly adopts a syringe, and the drainage assembly adopts a drainage bag.

[0015] According to the above technical solution, the catheter of the utility model has the following advantages and positive effects: in the application, the urine inlet port of the catheter body is inserted into the bladder of a patient, the first air bag is inflated or filled with liquid through the inflation channel, the first air bag is fully expanded, the first air bag is in the shape of a suction disc in the inflated state, the first air bag is inverted and covers the bladder opening, the negative pressure indicating channel generates negative pressure, the suction port forms a negative pressure interval below the first air bag, the first air bag is firmly adsorbed downward due to the negative pressure below the first air bag, so as to offset the upward force generated by the urine, avoid urine leakage, make the fixation of the catheter body more stable, avoid the pulling of the urethra, and reduce the occurrence of urethritis and discomfort. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 is a structure schematic view of a catheter disclosed by the embodiments of the application;

[0018] Figure 2 is an A-A cross-sectional schematic view of a catheter disclosed by the embodiments of the application;

[0019] Figure 3is a B-B cross-sectional schematic view of a urinary catheter disclosed by the embodiment of the present application;

[0020] Figure 4 is a C-C cross-sectional schematic view of a urinary catheter disclosed by the embodiment of the present application;

[0021] Figure 5 is a schematic view of an initial state of a urinary catheter disclosed by the embodiment of the present application;

[0022] Figure 6 is a schematic view of a use state of a urinary catheter disclosed by the embodiment of the present application;

[0023] Figure 7 is a schematic view of an overall structure of a urinary catheter disclosed by the embodiment of the present application.

[0024] Legend of reference signs:

[0025] 1, urinary catheter body; 2, first air bag; 10, urine inlet; 3, inflation channel; 4, negative pressure indication channel; 40, suction inlet; 5, second air bag; 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 DESCRIPTION

[0026] The embodiments of the present application will be further described in conjunction with the drawings and examples. The following detailed description of the examples and drawings is provided for exemplary illustration of the principles of the present application, but cannot be used to limit the scope of the present application, and the present application can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0027] The present application provides these embodiments in order to make the present application thorough and complete, and fully express the scope of the present application to those skilled in the art. It should be noted that: unless otherwise specified, the relative arrangement of components and steps, the composition of materials, numerical expressions and values set forth in these embodiments should be interpreted as merely exemplary, and not as a limitation.

[0028] It should be noted that, in the description of the present application, unless otherwise specified, the meaning of "a plurality of" is greater than or equal to two; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer" and the like is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] In addition, the "first", "second", and similar words used in the present application do not indicate any order, number or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable range of error. "Parallel" is not strictly parallel, but within the allowable range of error. "Include" or "contain" and similar words mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.

[0030] It should also be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. When it is described that a specific device is located between the first device and the second device, there can be or can not be an intermediate device between the specific device and the first device or the second device.

[0031] All terms used in the present application have the same meaning as understood by those skilled in the art to which the present application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted to have meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or excessively formalized sense, unless otherwise defined herein.

[0032] Techniques, methods and devices known to those skilled in the relevant art can not be discussed in detail, but under appropriate circumstances, the techniques, methods and devices should be considered as part of the specification.

[0033] As Figure 1As shown, the catheter of the embodiment comprises a catheter body 1, a first air bag 2, an inflation channel 3 and a negative pressure indicating channel 4. The first air bag 2 is in the shape of a suction cup when inflated and is sleeved on the catheter body 1 near the urine inlet 10. The inflation channel 3 is in communication with the first air bag 2 for inflating or filling the first air bag 2 with liquid. The negative pressure indicating channel 4 is provided with a suction inlet 40 at one end, which is arranged below the first air bag 2. The diameter of the catheter body 1 is usually smaller than that of the urethra, which facilitates the insertion of the catheter body 1 into the urethra and reduces the damage to the urethra. At the same time, higher requirements are placed on the sealing of the bladder opening during drainage to avoid urine leakage and inflammation of the urethra. It is particularly pointed out that the drainage is usually required because the urethra is damaged and the entry of urine into the urethra will cause inflammation of the urethra, which is not conducive to recovery. The first air bag 2 adopted in the present application is in the shape of a suction cup when inflated, which can better cover the bladder opening after being fixed. In addition, due to the urine pressure, the first air bag 2 is firmly fixed at the position of the bladder opening. The negative pressure indicating channel 4 has two functions. Firstly, it provides conditions for forming a negative pressure below the first air bag 2, which makes the adsorption more tightly and prevents the first air bag 2 from being loosened. Secondly, even if the first air bag 2 is displaced, the leaked urine will flow into the negative pressure indicating channel 4 through the suction inlet 40 and then flow out of the body, avoiding the direct discharge of urine into the urethra. In addition, the urine flowing out of the negative pressure indicating channel 4 will also prompt medical staff to pay attention, which not only plays a temporary treatment role but also plays a prompting role, facilitating early detection and correction by medical staff.

[0034] As shown in Figure 5 and Figure 6 , in use, the catheter body 1 is inserted into the bladder of the patient, and then the first air bag 2 is inflated or filled with liquid through the inflation channel 3. Both inflation and filling with liquid can be used, or a mixture of the two can be filled, so that the first air bag 2 is inflated and expanded. The first air bag 2 is in the shape of a suction cup when inflated, and the first air bag 2 is inverted downward and in abutment with the bladder wall 90, covering the bladder opening. The negative pressure indicating channel 4 generates a negative pressure, and a negative pressure interval is formed below the first air bag 2 through the suction inlet 40. Due to the negative pressure below the first air bag 2, the first air bag 2 is firmly adsorbed to the bladder wall 90, thereby offsetting the upward force generated by the urine, avoiding urine leakage, and making the fixation of the catheter body 1 more stable, avoiding the pulling of the urethra, and reducing the occurrence of urethritis and discomfort. It is particularly pointed out that when the second air bag 5 is not provided, the negative pressure indicating channel 4 may need to continuously generate negative pressure to offset the loss of pressure.

[0035] As shown in Figure 1 , Figure 5 and Figure 6As shown in some embodiments of the utility model, according to some embodiments of the utility model, still include second air bag 5, second air bag 5 is annular in the state of filling, and is sleeved in the lower side of catheter body 1 close to suction port 40. By increasing second air bag 5, can be realized in the urine inlet 10 one end of catheter body 1 is sent into the bladder of patient, makes second air bag 5 fill, in the state of filling, second air bag 5 is contacted with urethral wall 91, thereby reaches the effect of sealing urethra, can avoid the leakage, urine continues to leak downward, can better facilitate the upper negative pressure interval, at this time, the negative pressure indication channel 4 can not need to continuously generate negative pressure, only needs to maintain negative pressure. Preferably, second air bag 5 is sleeved in the lower side of catheter body 1 close to suction port 40 about 1cm position. It is particularly pointed out that the contact of second air bag 5 and urethral wall 91 cannot be overfilling, is easy to cause urethral discomfort, only as contact seal, cannot realize fixed function.

[0036] In some embodiments of the utility model, the second air bag 5 is communicated with the inflation channel 3, and the inflation channel 3 is used for inflating or filling the second air bag 5. The inflation channel 3 can be communicated with the first air bag 2 and the second air bag 5 at the same time, that is, the inflation channel 3 can inflate the first air bag 2 and the second air bag 5 at the same time, which is convenient for use and operation and saves the occupied space. The inflation channel 3 inflates or fills the second air bag 5, and both inflation and filling can be used, or the mixture of the two can be filled. The above is the preferred embodiment of the application, and the inflation channels 3 of the first air bag 2 and the second air bag 5 can be independent and separated from each other, such as the above-mentioned deformation, which should be included in the protection scope of the application.

[0037] As shown in some embodiments of the utility model, Figures 1 to 4 As shown in some embodiments of the utility model, 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, the outer tube 12 and the inner tube 11 are separated by a partition and are respectively used as the inflation channel 3 and the negative pressure indication channel 4, and the inner tube 11 is used as the drainage channel 13. The negative pressure indication channel 4 occupies a larger part of the space, and the inflation channel 3 only needs to occupy a small part of the space. In the preferred scheme, the inflation channel 3 is surrounded by the arc-shaped partition and the outer tube 12 to form an oval channel, and extends along the length direction, covers the inflation port of the first air bag 2, the inflation port of the second air bag 5 and the inflation port of the inflation assembly 6, and is sealed at both ends to form an independent channel; and the negative pressure indication channel 4 is mainly surrounded by the inner tube 11, the outer tube 12 and the partitions at both ends to form, and the cross section is C-shaped, so as to cover multiple suction ports 40.

[0038] As shown in some embodiments of the utility model, Figure 3As shown, in some embodiments of this utility model, 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 also provides a certain degree of anti-blocking effect, preventing impurities from entering and completely blocking the negative pressure indicating channel 4, providing a redundant design solution. The independent channels at the bottom of the negative pressure indicating channel 4 can be interconnected, ultimately connecting to the connection port of the negative pressure component 7.

[0039] like Figure 1 As shown, in some embodiments of this utility model, 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. The bullet-shaped end of the catheter body 1 facilitates the passage of the catheter body 1 through the urethra during insertion; while the inlet 10 is located on the side wall of the catheter body 1, the direction of fluid flow tends to be horizontal, allowing catheterization to begin from the bottom of the bladder and carrying out sediment, reducing sediment retention.

[0040] In some embodiments of this utility model, 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 catheterization efficiency. When not used for drainage, it also expands the catheter's other uses, such as serving as an irrigation tube. Through the urine inlet 10 at the end, which acts as an outlet, bladder irrigation can be achieved. 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 this 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 this utility model, 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 utility model, the inflation assembly 6 adopts an inflation air bag, the negative pressure assembly 7 adopts a syringe, and the drainage assembly 8 adopts a drainage bag. The inflation assembly 6 adopts an inflation air bag, which is convenient to use and can realize the inflation operation of the air bag by extrusion. The negative pressure assembly 7 adopts a syringe, and when in use, the syringe can be pulled out to form negative pressure, and when urine leaks, the leaked urine can enter the needle cylinder of the syringe through the negative pressure indicating channel 4, so that medical staff can observe as early as possible. The drainage assembly 8 adopts a drainage bag and further comprises a three-way valve and other accessories, which will not be described here.

[0044] So far, the embodiments of the application have been described in detail. In order to avoid obscuring the concept of the application, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0045] Although some specific embodiments of the application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the application. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be replaced equivalently without departing from the scope and spirit of the application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way.

Claims

1. A urinary catheter comprising a urinary catheter body (1), characterized in that The utility model relates to a kind of urinary catheter, including: First air bag (2), the first air bag (2) is suction disc state in filling state, and is sleeved in the urinary catheter body (1) near the urine inlet (10) one end; Inflation channel (3), the inflation channel (3) is communicated with the first air bag (2), to be inflated or filled with liquid to the first air bag (2); Negative pressure indicating channel (4), one end of the negative pressure indicating channel (4) is provided with suction port (40), and the suction port (40) is arranged below the first air bag (2).

2. The urinary catheter of claim 1, wherein: Also including second air bag (5), the second air bag (5) is annular in filling state, and is sleeved in the urinary catheter body (1) below near the suction port (40).

3. The urinary catheter of claim 2, wherein: The second air bag (5) is communicated with the inflation channel (3), and the inflation channel (3) is used to inflate or fill the second air bag (5) with liquid.

4. The urinary catheter of claim 1, wherein: The urinary catheter body (1) includes inner tube (11) and outer tube (12), the inner tube (11) and the outer tube (12) are nested, and the outer tube (12) is separated from inner tube (11) by partition and is respectively used as inflation channel (3) and negative pressure indicating channel (4), and the inner tube (11) is used as drainage channel (13).

5. The urinary catheter of claim 4, wherein: The suction port (40) is equidistantly provided with multiple along the circumferential direction of the urinary catheter body (1), and the negative pressure indicating channel (4) is separated by partition into multiple independent channels corresponding to the suction port (40).

6. The urinary catheter of claim 1, wherein: The urinary catheter body (1) one end is bullet head, and the urine inlet (10) is evenly arranged in the side wall of the urinary catheter body (1).

7. The urinary catheter of claim 1, wherein: The end of the urinary catheter body (1) is provided with the urine inlet (10).

8. The urinary catheter of claim 1, wherein: The first air bag (2) bottom is provided with stripe ring.

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

10. The urinary catheter of claim 9, wherein: The inflation assembly (6) adopts inflation air bag, the negative pressure assembly (7) adopts syringe, and the drainage assembly (8) adopts drainage bag.

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