Urinary catheterization device

Abstract

The present invention provides a urinary catheterization device, which relates to the technical field of urinary catheterization and comprises: a tube body, wherein a urinary catheterization cavity and a balloon injection cavity are arranged inside the tube body; at least three columnar balloons, wherein the columnar balloons are columnar in an empty state and ellipsoidal in an inflated state, wherein one ends of the at least three columnar balloons are connected to each other, and the other ends of the at least three columnar balloons are provided with injection ports, which are connected to an insertion end of the tube body, so that each injection port is communicated with a balloon injection cavity; an outer shell, wherein one end of the outer shell is a guide portion, and the other end of the outer shell is connected to the insertion end of the tube body, the outer shell is wrapped around the outer sides of the at least three columnar balloons, and the outer shell is provided with an opening, and the columnar balloons can break the outer shell when in an inflated state; a guide wire, wherein one end of the guide wire is connected to one end of the three columnar balloons, the guide wire passes through at least part of the urinary catheterization cavity, and the other end of the guide wire extends to the outer side of the tube body; and the problems of patient discomfort, urine residue, balloon deformation and urethra damage caused by the urinary catheter can be avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of urinary catheterization, and more specifically, relates to a urinary catheterization device. Background Art

[0002] At present, the most widely used urinary catheterization devices in clinical practice are divided into double-lumen urinary catheters and triple-lumen urinary catheters. The triple-lumen urinary catheter has an additional flushing chamber than the double-lumen urinary catheter, and the rest are the same. The insertion end at the top of the existing urinary catheterization device is provided with an external balloon, and the balloon is filled with water and bulged for fixing. There is also a hard part of about 3cm in length at the front end of the balloon, and the urinary catheterization port is opened on the side of the hard part, and the urinary catheterization port is relatively narrow. After the urinary catheter is inserted into the bladder, the hard part at the front end of the balloon is easy to stimulate the bladder wall, causing discomfort to the patient. At the same time, the urinary catheterization port is arranged at the front end of the balloon, and there is a distance from the bladder neck (the lowest point of the urine level). Such a high urinary catheterization port is difficult to fully catheterize, resulting in urine residue in the bladder, which is easy to cause infection or leakage, and the narrow urinary catheterization port is easily blocked by blood clots, tissues, etc., affecting the smoothness of the urinary catheterization port. After the catheter is inserted into the human body, it stays in the body for a long time. When the balloon is emptied after being filled with water for a long time, the external balloon wall is prone to wrinkles due to plastic deformation. Then, when the catheter is pulled out, the raised part of the balloon's wrinkles is easy to scratch the patient's urethra, causing pain or even injury and bleeding. In addition, after the traditional catheter is inserted into the patient's bladder, it is impossible to accurately judge whether the balloon has reached the bulging state. If the balloon is damaged, it cannot be found. At the same time, when the catheter is pulled out, it is impossible to accurately judge whether the balloon is intact. If the balloon is damaged, the negative pressure caused by the water absorption operation will stimulate the bladder wall near the damage, causing pain. Sometimes the operator even forgets to empty the balloon before pulling out the catheter, resulting in serious consequences such as urethral tearing. Summary of the invention

[0003] The purpose of the present invention is to provide a urinary catheter device to solve at least some of the problems existing in the existing urinary catheters in the above-mentioned background technology in view of the deficiencies existing in the prior art.

[0004] In order to achieve the above object, the present invention provides a urinary catheterization device, comprising:

[0005] A tube body, wherein a urinary catheter cavity and a balloon injection cavity are arranged inside the tube body;

[0006] At least three columnar balloons, wherein the columnar balloons are columnar in an empty state and ellipsoidal in an inflated state, wherein one end of the at least three columnar balloons is connected to each other, and the other end of the at least three columnar balloons is provided with an injection port, which is connected to the insertion end of the tube body, so that each of the injection ports is connected to one of the balloon injection cavities;

[0007] A shell, one end of which is a guide portion, and the other end of which is connected to the insertion end of the tube body, wherein the shell is wrapped around the outside of the at least three columnar balloons, and the shell is provided with an opening, and the columnar balloon can burst the shell when it is in a bulging state;

[0008] A guide wire, one end of which is connected to one end of the three columnar balloons, the guide wire passes through at least a portion of the urinary catheter cavity and the other end of the guide wire extends to the outside of the tube body.

[0009] Optionally, the material of the shell includes starch and food-grade medicinal gelatin.

[0010] Optionally, the material of the shell also includes anti-inflammatory drugs and / or analgesic drugs.

[0011] Optionally, the exposed end of the tube body is provided with a thickened portion with an outer diameter larger than that of the tube body, and the end of the thickened portion away from the tube body is provided with a first connecting portion, the first connecting portion is used to connect to a urine bag, and the outer side of the thickened portion is connected to a second connecting portion extending obliquely outward, and the second connecting portion is used to connect to a balloon injection component.

[0012] Optionally, an injection channel is provided inside the second connecting portion, and the injection channel is connected to all the balloon injection cavities.

[0013] Optionally, the thickened portion is provided with a groove, the other end of the guide wire passes through the bottom of the groove and extends outward, the groove is used to accommodate the exposed part of the guide wire, and the groove is provided with a transparent sealing cover.

[0014] Optionally, the other end of the guide wire is provided with a hand-held portion, and the hand-held portion is provided with an anti-slip surface.

[0015] Optionally, a scale indicator mark is provided at a position of the guide wire close to the bottom of the groove, and the scale indicator mark can indicate the moving direction and amount of the guide wire relative to the bottom of the groove.

[0016] Optionally, a hardened portion is provided at one end of the catheter cavity close to the columnar balloon, the hardness of the hardened portion is higher than the hardness of other positions of the catheter cavity, and the interior of the hardened portion can accommodate the at least three columnar balloons in an empty state without swelling or deformation.

[0017] Optionally, three columnar balloons are provided, three balloon injection cavities are provided, the circumferences of the three balloon injection cavities are evenly distributed in the tube body, and each columnar balloon is connected to the periphery of one injection port.

[0018] The present invention provides a urinary catheter device, which has the following beneficial effects: the urinary catheter device is provided with at least three columnar balloons at the insertion end of a tube body, when not inserted into a patient's body, the at least three columnar balloons are in an empty state, and the outer portion thereof is wrapped with a shell, the guide portion of the shell is convenient for insertion into the patient's bladder, the opening on the shell can be provided to draw out urine after the insertion into the bladder, indicating that the urinary catheter device has been inserted in place, after urine is shown to have flowed out at the exposed end of the tube body, water can be injected into the balloon injection cavity, so that the columnar balloon forms a bulging state, thereby achieving the fixation of the tube body in the bladder, when the columnar balloon is in the bulging state, the shell is broken, and the shell will no longer wrap the columnar balloon, and there is no hard portion at the front end of the balloon like the urinary catheter in the prior art, so that the bladder wall of the patient will not be stimulated to cause discomfort; the front end of the urinary catheter cavity at the insertion end of the tube body is directly open and is located behind the columnar balloon, very close to the bladder neck, which can minimize urine residue, and the inlet cross-section of the directly opened urinary catheter cavity is larger than the urinary catheter port of the existing urinary catheter, The possibility of blockage can be reduced; at the same time, as the columnar balloon is filled with water, its volume expands, and the guide wire connected thereto will be pulled into the bladder, so that the exposed guide wire moves forward. This setting can facilitate the operator to observe and judge whether the columnar balloon has entered a bulging state, thereby achieving a visual effect of water injection of the columnar balloon; before the tube body needs to be pulled out, the operator can also tentatively pull the exposed guide wire to judge whether the columnar balloon is intact. If the guide wire is difficult to pull, the columnar balloon is well filled with water. At this time, water can be absorbed from it to restore it to an empty state, thereby avoiding pain to the patient caused by water absorption when the columnar balloon is damaged; after absorbing water, the columnar balloon restores to an empty state, and at this time, the guide wire is pulled outward, and the columnar balloon is retracted into the tube body through the traction of the guide wire, thereby avoiding the columnar balloon contacting the patient's urethra during the process of pulling out the tube body and causing pain or injury; and the setting of the guide wire also has a certain reminder function, which can remind the operator to pull the guide wire to check the integrity of the columnar balloon and store the columnar balloon before absorbing water and before pulling it out.

[0019] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0021] Figure 1 A schematic diagram of the overall structure of a urinary catheterization device according to an embodiment of the present invention is shown.

[0022] Figure 2 A schematic structural diagram of an insertion end of a tube body of a urinary catheterization device according to an embodiment of the present invention is shown.

[0023] Figure 3 A schematic diagram of the end surface structure of the insertion end of a tube body of a urinary catheterization device according to an embodiment of the present invention is shown.

[0024] Figure 4 A schematic diagram showing a bulging state of a cylindrical balloon of a urinary catheterization device according to an embodiment of the present invention is shown.

[0025] Description of reference numerals:

[0026] 1. Tube body; 2. Catheterization cavity; 3. Balloon injection cavity; 4. Columnar balloon; 5. Shell; 6. Opening; 7. Guide wire; 8. Thickened part; 9. First connecting part; 10. Second connecting part; 11. Third connecting part; 12. Flushing cavity; 13. Groove; 14. Transparent sealing cover; 15. Hand-held part; 16. Hardened part; 17. Urine channel. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0028] like Figures 1 to 4 As shown, the present invention provides a urinary catheterization device, comprising:

[0029] A tube body 1, wherein a urinary catheter cavity 2 and a balloon injection cavity 3 are arranged inside the tube body 1;

[0030] At least three columnar balloons 4, which are columnar in the empty state and ellipsoidal in the inflated state, one end of the at least three columnar balloons 4 is connected to each other, and the other end of the at least three columnar balloons 4 is provided with an injection port, which is connected to the insertion end of the tube body 1, so that each injection port is connected to a balloon injection cavity 3;

[0031] A shell 5, one end of which is a guide portion, and the other end of which is connected to the insertion end of the tube body 1. The shell 5 is wrapped around the outside of at least three columnar balloons 4, and the shell 5 is provided with an opening 6, so that the columnar balloon 4 can break through the shell 5 when it is in a bulging state;

[0032] A guide wire 7 , one end of which is connected to one end of the three columnar balloons 4 , the guide wire 7 passes through at least a portion of the urinary catheter cavity 2 and the other end of the guide wire 7 extends to the outside of the tube body 1 .

[0033] Specifically, in order to solve the problems existing in the existing urinary catheters, the urinary catheter device provided by the present invention is provided with at least three columnar balloons 4 at the insertion end of the tube body 1. When not inserted into the patient's body, the at least three columnar balloons 4 are in an empty state, and the outer surface thereof is wrapped with a shell 5. The guide portion of the shell 5 is convenient for insertion into the patient's bladder. The opening 6 on the shell 5 is provided to draw out urine after insertion into the bladder, indicating that the urinary catheter device has been inserted in place. After urine is shown to flow out at the exposed end of the tube body 1, water can be injected into the balloon injection cavity 3, so that the columnar balloon 4 forms a Figure 4 The bulging state shown in the figure can fix the tube body 1 in the bladder. When the columnar balloon 4 is in the bulging state, the outer shell 5 is broken, and the outer shell 5 will no longer wrap the columnar balloon 4. There is no hard part at the front end of the balloon like the catheter in the prior art, which will not stimulate the patient's bladder wall and cause discomfort. The front end of the catheter cavity 2 at the insertion end of the tube body 1 is directly open and is located behind the columnar balloon 4, very close to the bladder neck, which can reduce urine residue, and the directly open catheter cavity 2 has an entrance cross-section larger than the catheter port of the existing catheter, which can reduce the possibility of blockage. At the same time, as the columnar balloon 4 is filled with water, its volume expands, and the guide wire 7 connected thereto will be pulled into the bladder, so that the exposed guide wire 7 moves forward. Through such a setting, it is convenient for the operator to observe and judge whether the columnar balloon 4 has entered The inflated state can achieve the effect of visualizing the water injection of the columnar balloon 4; before the tube body 1 needs to be pulled out, the operator can also tentatively pull the exposed guide wire 7 to determine whether the columnar balloon 4 is intact. If the guide wire 7 is difficult to pull, the columnar balloon 4 is well filled with water. At this time, water can be absorbed to restore it to an empty state, thereby avoiding water absorption and causing pain to the patient when the columnar balloon 4 is damaged; after absorbing water, the columnar balloon 4 returns to an empty state, and at this time, the guide wire 7 is pulled outward, and the columnar balloon 4 is retracted into the tube body 1 through the traction of the guide wire 7, thereby avoiding the columnar balloon 4 contacting the patient's urethra during the removal of the tube body 1 and causing pain or injury; and the setting of the guide wire 7 also has a certain reminder function, which can remind the operator to pull the guide wire 7 to check the integrity of the columnar balloon 4 and store the columnar balloon 4 before absorbing water and before pulling it out.

[0034] Furthermore, the shape of the guide portion may be an arc shape or a tapered shape transitioning from a back-to-front arc shape, so as to facilitate the insertion of the tube body 1 .

[0035] Optionally, the material of the shell 5 includes starch and food-grade medicinal gelatin.

[0036] Specifically, the shell 5 can be connected to the tube body 1 by bonding. The main components of the shell 5 can be the same as the main components of the hard capsule, which is hard, can be broken and disintegrated by the columnar balloon 4, and is soluble. In order to slow down the dissolution during the insertion process, a structural layer or coating that slows down the dissolution can also be provided on the outer surface of the shell 5. For example, a commonly used paraffin lubricant can be applied before insertion, which not only has a lubricating effect but also slows down the dissolution of the shell 5. Such a shell 5 is easily broken by the columnar balloon 4, which is discharged with urine after dissolving in the bladder, so that the insertion end of the tube body 1 after insertion is limited by the columnar balloon 4, which improves the smoothness of the catheterization process. During the removal process, as the columnar balloon 4 retracts into the tube body 1, there is no protrusion on the outside of the insertion end of the tube body 1, which can ensure that the tube body 1 is smoothly removed, greatly reducing the patient's discomfort.

[0037] Furthermore, the shell 5 can also be made of the material of a suppository or a drop capsule, which can be successfully ruptured by the columnar balloon 4, can be dissolved, and is harmless to the human body.

[0038] Optionally, the material of the shell 5 also includes anti-inflammatory drugs and / or analgesic drugs.

[0039] Specifically, anti-inflammatory drugs and / or analgesics may be added to the material of the shell 5. As the shell 5 dissolves, the drugs enter the bladder and carry out targeted anti-inflammatory and / or analgesic effects, thus achieving multiple goals at one stroke.

[0040] Optionally, the exposed end of the tube body 1 is provided with a thickened portion 8 having an outer diameter larger than that of the tube body 1, and the end of the thickened portion 8 away from the tube body 1 is provided with a first connecting portion 9, the first connecting portion 9 is used to connect to a urine bag, and the outer side of the thickened portion 8 is connected to a second connecting portion 10 extending obliquely outward, and the second connecting portion 10 is used to connect to a balloon injection component.

[0041] Specifically, the thickened portion 8 can facilitate the arrangement of the first connecting portion 9 and the second connecting portion 10 so as to be connected to the urine bag and the balloon injection component, thereby improving the convenience of operation.

[0042] Optionally, an injection channel is provided inside the second connecting portion 10 , and the injection channel is connected to all the balloon injection cavities 3 .

[0043] Specifically, the injection channel is connected to all the balloon injection chambers 3, and can simultaneously inject water into all the columnar balloons 4 to form a bulging state.

[0044] In this embodiment, a flushing cavity 12 is further provided in the tube body 1 of the urinary catheter device, and a third connecting portion 11 extending obliquely outward is connected to the thickened portion 8. A flushing channel connected to the flushing cavity 12 is provided in the third connecting portion 11. After the third connecting portion 11 is connected to the flushing component, flushing of the bladder is facilitated.

[0045] Optionally, the thickened portion 8 is provided with a groove 13 , the other end of the guide wire 7 passes through the bottom of the groove 13 and extends outward, the groove 13 is used to accommodate the exposed part of the guide wire 7 , and the groove 13 is provided with a transparent sealing cover 14 .

[0046] Specifically, one end of the guide wire 7 is connected to the columnar balloon 4, and the other end thereof passes through the catheterization cavity 2 to the thickened portion 8, passes through the side wall of the thickened portion 8 and passes out from the bottom of the groove 13. A sealing structure is provided at the side wall of the thickened portion 8 through which it passes, such as a sealing ring is provided in the perforation to prevent urine leakage here, and a transparent sealing cover 14 is provided in the groove 13 to form a sealed cavity. The exposed part of the guide wire 7 is sealed in the sealed cavity. Due to the existence of the sealed cavity, urine is further prevented from flowing into the sealed cavity.

[0047] Furthermore, the transparent sealing cover 14 can be of a flip-up type or a flip-up type, made of a transparent material, and sealed by a rubber or silicone portion.

[0048] Optionally, the other end of the guide wire 7 is provided with a hand-held portion 15 , and the hand-held portion 15 is provided with an anti-slip surface.

[0049] Specifically, the hand-held portion 15 can be convenient for the operator to grasp in order to perform pulling operations. The hand-held portion 15 can be configured to be ring-shaped or sheet-shaped. If it is ring-shaped, the hollow portion in the middle naturally forms an anti-slip surface on the inner periphery to facilitate pulling. If it is sheet-shaped, its surface can be provided with a concave-convex anti-slip surface.

[0050] Optionally, a scale indicator mark is provided at a position of the guide wire 7 close to the bottom of the groove 13 , and the scale indicator mark can indicate the moving direction and amount of the guide wire 7 relative to the bottom of the groove 13 .

[0051] Specifically, the scale indicator mark can be a scale line and a length scale mark or a scale mark with a gradient color or length, as long as it can indicate the moving direction and amount of the guide wire 7, for example, a plurality of scale lines with a gradient color are arranged at intervals, the color of the scale lines gradually darkens from the inside to the outside, and in the initial state, the scale line of the exposed part of the guide wire 7 near the bottom of the groove is bright red, and as the columnar airbag bulges, the guide wire 7 moves inward, and the scale line of the exposed part near the bottom of the groove is dark red, which conveniently indicates that the columnar balloon 4 enters the bulging state, and before the tube body 1 is pulled out, the guide wire 7 is pulled outward so that the scale line of the exposed part of the guide wire 7 near the bottom of the groove is light red, which conveniently indicates that the columnar balloon 4 is retracted into the tube body 1 and the tube body 1 can be pulled out; of course, different colors can also be used as marks of different stages of the guide wire 7, so that the operator can judge the moving direction and amount of the guide wire 7.

[0052] Optionally, a hardened portion 16 is provided at one end of the catheter cavity 2 close to the columnar balloon 4, and the hardness of the hardened portion 16 is higher than the hardness of other positions of the catheter cavity 2. The interior of the hardened portion 16 can accommodate at least three columnar balloons 4 in an empty state without swelling or deformation.

[0053] Specifically, the hardened portion 16 can be made of a hard plastic layer, and the hardened portion 16 can be integrally connected to the tube body 1 to increase the hardness of the insertion end of the tube body 1 so that when the guide wire 7 is pulled into the deflated columnar balloon 4, the insertion end of the tube body 1 has sufficient shape retention performance to prevent the retraction of the columnar balloon 4 from causing expansion and deformation of the tube body 1 at this position.

[0054] Optionally, three columnar balloons 4 are provided, three balloon injection cavities 3 are provided, the three balloon injection cavities 3 are evenly distributed in the tube body 1, and each columnar balloon 4 is connected to the periphery of an injection port.

[0055] Specifically, the columnar balloons 4 can be arranged in a triangular shape, the top ends of the three columnar balloons 4 and the guide wire 7 are connected at one point, the bottom ends of the three columnar balloons 4 are connected to the end face of the tube body 1 at the vertices of an equilateral triangle, the injection port of each columnar balloon 4 is connected to a balloon injection cavity 3, the three balloon injection cavities 3 are evenly distributed inside the tube body 1, and converge in the thickened portion 8 to connect the injection channels; the three columnar balloons 4 are wrapped by the outer shell 5 when they are in an empty state, and break through the outer shell 5 and expand outward evenly when they are in an inflated state, and a urine channel 17 that is much larger than a traditional urinary catheter is formed between two adjacent columnar balloons 4. Compared with the catheter port on a traditional urinary catheter, the urine channel 17 is not only closer to the bladder neck, but also has a larger entrance cross-section, so that urine can flow smoothly into the catheter cavity 2.

[0056] In summary, when the urinary catheter device provided by the present invention is used: first, paraffin lubricant is applied to the outer side of the shell 5; then the tube body 1 is inserted into the human body until urine flows out, indicating that it has been inserted into the bladder; at this time, water is injected into the columnar balloon 4 through the balloon injection cavity 3, so that the columnar balloon 4 breaks through the shell 5 to form a bulging state, and the tube body 1 is limited and fixed in the bladder; as the shell 5 is broken and disintegrated, the shell 5 dissolves and falls off, the medicine therein is released, and the shell 5 disappears, and only three bulging columnar balloons 4 are left at the insertion end of the tube body 1, and there is no bulging at the front end of the balloon. The hard part, like the catheter in the prior art, will not irritate the patient's bladder wall and cause discomfort; the front end of the catheter cavity 2 at the insertion end of the tube body 1 is directly open and is located behind the columnar balloon 4, very close to the bladder neck, which can reduce urine residue, and the entrance cross-section of the directly open catheter cavity 2 is larger than the catheter port of the existing catheter, which can reduce the possibility of blockage; at the same time, the guide wire 7 is pulled forward, and the color of the scale line on the guide wire 7 becomes darker, indicating that the columnar balloon 4 enters a bulging state; at this time, the catheterization device can smoothly catheterize urine into the connected urine bag. When it is necessary to pull out the tube body 1, first open the transparent sealing cover 14, tentatively pull the handle 15 on the guide wire 7, and when it is confirmed that it cannot be easily pulled out, absorb water on the columnar balloon 4, and the columnar balloon 4 after absorbing water will return to the empty state; then pull the guide wire 7 outward until the color of the scale line on the guide wire 7 becomes lighter, indicating that the columnar balloon 4 is retracted into the hardened portion 16 of the tube body 1; at this time, the tube body 1 is smoothly pulled out, and there is no protrusion on the outside of the insertion end of the tube body 1 where the columnar balloon 4 is retracted, which can ensure that the tube body 1 is smoothly pulled out and greatly reduce the patient's discomfort.

[0057] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A urinary catheterization device, characterized in that: include: A tube body, wherein a urinary catheter cavity and a balloon injection cavity are arranged inside the tube body; At least three columnar balloons, wherein the columnar balloons are columnar in an empty state and ellipsoidal in an inflated state, wherein one end of the at least three columnar balloons is connected to each other, and the other end of the at least three columnar balloons is provided with an injection port, which is connected to the insertion end of the tube body, so that each of the injection ports is connected to one of the balloon injection cavities; A shell, one end of which is a guide portion, and the other end of which is connected to the insertion end of the tube body, wherein the shell is wrapped around the outside of the at least three columnar balloons, and the shell is provided with an opening, and the columnar balloon can burst the shell when it is in a bulging state; A guide wire, one end of which is connected to one end of the three columnar balloons, the guide wire passes through at least a portion of the urinary catheter cavity and the other end of the guide wire extends to the outside of the tube body; When the columnar balloon is inflated, the outer shell is broken, and the front end of the catheter cavity at the insertion end of the tube body is directly opened and located behind the columnar balloon, close to the bladder neck, which can reduce urine residue. In addition, the entrance cross-section of the directly opened catheter cavity is larger than the catheter port of the existing catheter, which can reduce the possibility of blockage.

2. The urinary catheterization device according to claim 1, characterized in that: The material of the shell includes starch and edible-grade medicinal gelatin.

3. The urinary catheterization device according to claim 2, characterized in that: The material of the shell also includes anti-inflammatory drugs and / or analgesic drugs.

4. The urinary catheterization device according to claim 1, characterized in that: The exposed end of the tube body is provided with a thickened portion with an outer diameter larger than that of the tube body, and the end of the thickened portion away from the tube body is provided with a first connecting portion, the first connecting portion is used to connect to a urine bag, and the outer side of the thickened portion is connected to a second connecting portion extending obliquely outward, and the second connecting portion is used to connect to a balloon injection component.

5. The urinary catheterization device according to claim 4, characterized in that: An injection channel is provided inside the second connecting portion, and the injection channel is communicated with all the balloon injection cavities.

6. The urinary catheterization device according to claim 4, characterized in that: The thickened portion is provided with a groove, the other end of the guide wire passes through the bottom of the groove and extends outward, the groove is used to accommodate the exposed part of the guide wire, and the groove is provided with a transparent sealing cover.

7. The urinary catheterization device according to claim 6, characterized in that: The other end of the guide wire is provided with a hand-held portion, and the hand-held portion is provided with an anti-slip surface.

8. The urinary catheterization device according to claim 6, characterized in that: A scale indicator mark is provided at a position of the guide wire close to the bottom of the groove, and the scale indicator mark can indicate the moving direction and amount of the guide wire relative to the bottom of the groove.

9. The urinary catheterization device according to claim 1, characterized in that: A hardened portion is provided at one end of the catheter cavity close to the columnar balloon, and the hardness of the hardened portion is higher than the hardness of other positions of the catheter cavity. The interior of the hardened portion can accommodate the at least three columnar balloons in an empty state without swelling or deformation.

10. The urinary catheterization device according to claim 1, characterized in that: There are three columnar balloons, and three balloon injection cavities are provided. The circumferences of the three balloon injection cavities are evenly distributed in the tube body, and each columnar balloon is connected to the outer circumference of one injection port.

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