CN216986023U - Safe urine-leakage-proof washing catheter - Google Patents

Abstract

The utility model provides a safe urine leakage prevention washing catheter, which comprises: the catheter comprises a catheter, a balloon part with multiple urine leakage prevention and displacement prevention functions, and at least two water injection ends, a bladder flushing end and a urine discharging end which are arranged at the tail end of the catheter, wherein the balloon part is arranged on the wall of the catheter, the inside of the balloon part is communicated with the water injection ends, and water is injected into the balloon part through the water injection ends; the head end of the catheter is provided with a side hole for catheterization, and the side hole is communicated with the bladder irrigation end and the urination end through a channel arranged in the catheter and is respectively used for irrigating the bladder and urinating. The utility model can block urethra, internal orifice of urethra and bladder wall near the internal orifice of urethra, and has multiple effects of preventing urine leakage and displacement.

Description

Safe urine-leakage-proof washing catheter

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a safe urine leakage prevention flushing catheter.

Background

Catheterization is a conventional operation technique which must be mastered by medical staff, and refers to a process of inserting a catheter into a bladder through an external orifice of a urethra to play a role in draining urine. The common clinical catheters mainly comprise two types of double-cavity catheters and three-cavity catheters, wherein the double-cavity catheter comprises a main pipe body, a fixed balloon water injection end and a urine discharge end which are connected with the rear end of the main pipe body, and a urine discharge hole communicated with the urine discharge end and a spherical bladder fixed balloon communicated with the water injection end of the fixed balloon are arranged on the front section pipe wall of the main pipe body; the three-cavity catheter is based on the double-cavity catheter, and the rear end of the main tube body is added with a bladder flushing end communicated with the urination hole. During clinical application, the urine bag is connected to the urination end, the main tube body is lubricated by liquid paraffin, the head end of the main tube body is inserted into the bladder through the external urethral opening, the bladder fixing balloon is filled by water injected through the water injection end of the fixing balloon, and the main tube body is pulled back to enable the bladder fixing balloon to be close to the internal urethral opening.

When the urinary catheter is in actual use, the urine leakage phenomenon of men often occurs, the record of urine volume is influenced, the workload of medical staff is increased, and the embarrassing psychology of patients is easily caused by urine polluting bed sheets and trousers. Aiming at the problem of urine leakage, the utility model with the publication number of CN 209033489U discloses a convenient-to-wash urine leakage prevention catheter, which is characterized in that a truncated cone-shaped urine leakage prevention balloon is arranged on a main pipe body close to the rear end of a bladder fixing balloon; notice No. CN 210057103U's utility model discloses a leak protection catheter sets up the elasticity valve of parcel bladder fixed sacculus on being responsible for the body, forms the toper leak protection sacculus that encircles body outer wall when full bladder fixed sacculus. The patent mainly adds the leak protection sacculus, and conical leak protection sacculus is fit for more with the bladder wall around the internal orifice of urethra, and the contact surface of conical sacculus and bladder mucous membrane is bigger, has the function of certain leak protection urine. However, due to the lack of direct force at the interface, the pressure of the balloon against the bladder is low, and when the leak-proof balloon is activated, urine can still flow to the internal urethral opening through the gap between the balloon and the bladder folds, resulting in urine leakage. In addition, when the bladder fixing balloon is excessively inflated, the head-end ureter can greatly stimulate the bladder wall, and pain of a patient can be easily caused.

The anatomical structures of the male bladder and the urethra are analyzed to cause the phenomenon of urine leakage during the retention of the urinary catheter, and the following points are mainly considered: 1. when the bladder is empty, the volume of the bladder is reduced, the bladder inner wall generates radial bladder folds taking the urethra orifice as the center, at the moment, the bladder fixing saccule is far away from the urethra orifice, and a gap exists between the bladder fixing saccule and the bladder wall, so that urine flows into the urethra orifice through the folds; 2. the bladder fixing balloon is spherical, the bladder wall close to the inner opening of the urethra is funnel-shaped in a hollow state, the contact area between the bladder fixing balloon and the funnel-shaped bladder wall is small, and urine can easily flow into the inner opening of the urethra through a gap between the bladder fixing balloon and the funnel-shaped bladder wall; 3. when the bladder is fixed and is close to the outer opening of the funnel-shaped bladder wall, a larger space exists between the bladder fixing saccule and the inner opening of the urethra, and urine in the secondary space can be extruded into the urethra through the inner opening of the urethra under the compression of the bladder and the compression of the bladder fixing saccule; 4. the urethra has three physiological stenosis in urethra internal orifice, throat and urethra external orifice, and the ureter is through three stenosis back, and there is the clearance between other positions of urethra and the ureter is responsible for the body, and under the effect of urethra smooth muscle, this gap is less, but old, stupor, paraplegia, patient such as diabetes, urethra smooth muscle is more lax, and the ureter is responsible for between the body and the urethra gap great, and the urine of urethra internal orifice department can flow through this clearance. From the analysis of the cause of urine leakage, the phenomenon of urine leakage can be prevented from the following aspects: 1. increasing the pressure of the balloon on bladder mucosa at the urethral orifice; 2. increasing the contact area of the near-urethra internal orifice balloon and the bladder wall; 3. reducing detail between the balloon and the intraurethral space; 4. reducing the gap between the catheter and the urethral mucosa.

SUMMERY OF THE UTILITY MODEL

According to the prior catheter provided by the above, because the contact surface lacks direct acting force, the pressure of the balloon to the bladder is smaller, when the leakage-proof balloon moves, urine can still flow to the inner opening of the urethra through the gap between the balloon and bladder folds to cause urine leakage; in addition, when the bladder fixing saccule is excessively inflated, the head end ureter has larger stimulation to the bladder wall, which easily causes the technical problem of pain of patients, and the safe urine leakage prevention irrigation catheter is provided. The utility model mainly utilizes the drop-shaped bladder fixing saccule to simultaneously block the internal urethral orifice and the bladder wall near the internal urethral orifice, thereby preventing urine leakage; the anti-displacement saccule is used for blocking the urethra after water is injected, so that urine leakage and catheter displacement are avoided; the annular ridge protruding structure is arranged on the surface of the displacement-preventing balloon, so that the effects of displacement prevention and urine leakage prevention are increased.

The technical means adopted by the utility model are as follows:

a safe leak-proof urinary irrigation catheter comprising: the catheter comprises a catheter, a balloon part with multiple urine leakage prevention and displacement prevention functions, and at least two water injection ends, a bladder flushing end and a urine discharging end which are arranged at the tail end of the catheter, wherein the balloon part is arranged on the wall of the catheter, the inside of the balloon part is communicated with the water injection ends, and water is injected into the balloon part through the water injection ends; the head end of the catheter is provided with a side hole for catheterization, and the side hole is communicated with the bladder irrigation end and the urination end through a channel arranged in the catheter and is respectively used for irrigating the bladder and urinating.

Furthermore, the balloon part consists of a bladder fixing balloon and an anti-displacement balloon, the bladder fixing balloon is arranged on the side close to the side hole and is communicated with the water injection end of the fixing balloon through a second channel arranged in the catheter, and the bladder fixing balloon is in a water drop shape after being injected with water; prevent shifting sacculus and arrange in and keep away from the side hole side, communicate with preventing shifting sacculus water injection end through setting up at the inside first passageway of pipe, prevent that the shape after the shifting sacculus water injection is cylindricality or wave.

Furthermore, the bladder fixing balloon consists of a first balloon and a second balloon which are integrated and communicated with each other in inner cavities, the first balloon is arranged on the side far away from the urethral catheterization hole, the second balloon is arranged on the side close to the urethral hole, and the head end of the channel II is positioned inside the first balloon; the second balloon and the side hole are arranged in the bladder, the first balloon is arranged in the urethra, after water is injected, the second balloon is tightly attached to a bladder mucous membrane at the position of the urethra inner opening, the first balloon blocks the urethra inner opening, the urethra inner opening is located between the first balloon and the second balloon, urine leakage is prevented, and the catheter is prevented from moving.

Further, a plurality of annular ridge protruding structures distributed at intervals are arranged on the outer surface of the cylindrical anti-displacement balloon, and preferably 3 annular ridge protruding structures are arranged.

Furthermore, the wave-shaped anti-displacement saccule consists of at least two saccules I with smooth surfaces and at least one saccule II with a plurality of floating points arranged on the surface, the saccules II and the saccules I are distributed at intervals and integrally form a wave-shaped structure after water injection, the head end and the tail end of the anti-displacement saccule are both the saccules I, and the saccule II is arranged between the head saccule I and the tail saccule I.

Furthermore, the diameter of each sacculus in the anti-displacement sacculus is gradually increased, and each sacculus I and each sacculus II are cylindrical after water injection.

Further, the maximum capacity of the anti-displacement balloon is 10ml, the maximum expansion diameter is 1.2cm, the length is 2-5cm, and the preferred length is 3 cm.

Further, the maximum capacity of the bladder fixing balloon is 35ml, and the maximum diameter is 3 cm.

Furthermore, the bladder fixing saccule and the anti-displacement saccule are made of rubber, silica gel, polyurethane, polypropylene or polytetrafluoroethylene and the like.

Further, the outer diameter of the catheter is 6-22Fr, in particular 6, 8, 10, 12, 14, 16, 18, 20 or 22Fr, preferably 18 Fr; the length of the conduit is 30-40cm, preferably 40 cm; the head end of the catheter body is in a semi-elliptical shape.

Compared with the prior art, the utility model has the following advantages:

1. according to the safe urine leakage prevention irrigation catheter, the bladder fixing saccule is in a water drop shape and can simultaneously block the inner opening of the urethra and the bladder wall near the inner opening of the urethra, so that urine leakage is prevented.

2. The safe urine leakage prevention washing catheter provided by the utility model has the advantages that the urethra can be blocked after the displacement prevention saccule is filled with water, and urine leakage and catheter displacement are avoided.

3. According to the safe urine leakage prevention irrigation catheter provided by the utility model, the annular ridge is arranged on the surface of the displacement prevention saccule, so that the displacement prevention and urine leakage prevention effects can be increased.

In conclusion, the technical scheme of the utility model can solve the problems that the prior catheter has small pressure of the balloon to the bladder due to the lack of direct acting force on the contact surface, and when the leakage-proof balloon moves, urine can still flow to the inner opening of the urethra through the gap between the balloon and the bladder plica to cause urine leakage; in addition, when the bladder fixing saccule is excessively inflated, the head end ureter has large stimulation to the bladder wall, and the pain of a patient is easily caused.

For the above reasons, the present invention can be widely applied to the fields of medical treatment and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the utility model in an operative condition (bladder fixation balloon inflated).

Fig. 3 is a schematic view of the present invention in an operational state (with both the bladder fixation balloon and the anti-migration balloon inflated).

In the figure: 1. side holes; 2. a bladder fixation balloon; 3. a conduit; 4. an anti-migration balloon; 5. a first channel; 6. a water injection end of the anti-displacement balloon; 7. a bladder irrigation end; 8. a urination end; 9. fixing the water injection end of the balloon; 10. a second channel; 11. a third channel; 12. an annular ridge projection structure; 13. a first balloon; 14. and a second balloon.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

As shown, the present invention provides a safe urinary leakage prevention irrigation catheter comprising: the catheter comprises a catheter 3, a balloon part with multiple urine leakage prevention and displacement prevention functions, and at least two water injection ends, a bladder flushing end 7 and a urine discharging end 8 which are arranged at the tail end of the catheter 3, wherein the balloon part is arranged on the wall of the catheter 3, the inside of the balloon part is communicated with the water injection ends, and water is injected into the balloon part through the water injection ends; the head end of the catheter 3 is provided with a side hole 1 for catheterization, and the side hole 1 is communicated with a bladder irrigation end 7 and a urination end 8 through a channel arranged in the catheter 3 and is respectively used for irrigating the bladder and urinating.

In a preferred embodiment, the balloon part consists of a bladder fixing balloon 2 and an anti-displacement balloon 4, the bladder fixing balloon 2 is arranged at the side close to the side hole 1 and is communicated with a water injection end 9 of the fixing balloon through a second channel 10 arranged in the catheter 3, and the bladder fixing balloon 2 is in a water drop shape after being injected with water; the anti-displacement saccule 4 is arranged at the side far away from the side hole 1 and is communicated with the water injection end 6 of the anti-displacement saccule through a first channel 5 arranged in the catheter 3, and the shape of the anti-displacement saccule 4 after water injection is cylindrical or wave-shaped.

In a preferred embodiment, the bladder fixing balloon 2 is composed of a first balloon 13 and a second balloon 14 which are integrated and communicated with each other in inner cavities, the first balloon 13 is arranged on the side far away from the urethral catheterization hole, the second balloon 14 is arranged on the side close to the urethral catheterization hole, and the head end of the second channel is positioned inside the first balloon 13; the second balloon 14 and the side hole 1 are placed in the bladder, the first balloon 13 is placed in the urethra, after water is injected, the second balloon 14 is tightly attached to a bladder mucous membrane at the position of the urethra inner opening, the first balloon 13 blocks the urethra inner opening, the urethra inner opening is located between the first balloon 13 and the second balloon 14, urine leakage is prevented, and the catheter is prevented from moving.

In a preferred embodiment, the outer surface of the cylindrical anti-displacement balloon 4 is provided with a plurality of annular ridge-shaped raised structures 12 distributed at intervals.

As a preferred embodiment, the wave-shaped anti-displacement saccule 4 consists of at least two saccules I with smooth surfaces and at least one saccule II with a plurality of floating point protrusions arranged on one surface, the saccules II and the plurality of saccules I are distributed at intervals and integrally form a wave-shaped structure after water is injected, the saccules I at the head end and the tail end of the anti-displacement saccule 4 are both the saccules I, and the saccules II are arranged between the first saccule and the tail saccule I.

In a preferred embodiment, the diameter of each balloon in the anti-displacement balloon 4 is gradually increased, and each balloon I and each balloon II are cylindrical after being filled with water.

In a preferred embodiment, the maximum volume of the anti-displacement balloon 4 is 10ml, the maximum inflated diameter is 1.2cm, and the length is 2-5 cm.

In a preferred embodiment, the bladder fixation balloon 2 has a maximum capacity of 35ml and a maximum diameter of 3 cm.

In a preferred embodiment, the bladder fixation balloon 2 and the anti-displacement balloon 4 are made of rubber, silicone, polyurethane, polypropylene, polytetrafluoroethylene, or the like.

As a preferred embodiment, the outer diameter of the catheter 3 is 6-22Fr, in particular 6, 8, 10, 12, 14, 16, 18, 20 or 22 Fr; the length of the conduit 3 is 30-40 cm; the head end of the catheter 3 body is in a semi-elliptical shape.

The first channel 5, the second channel 10 and the third channel 11 are all single channels.

The use of the utility model: liquid paraffin is wiped on the front section of the catheter, the head end of the catheter is completely inserted through the external orifice of the urethra, 35ml of saline is injected into the bladder fixing saccule through the water injection end of the fixing saccule, the catheter is pulled back to enable the bladder fixing saccule to be close to the bladder wall near the internal orifice of the urethra, and 10ml of saline is injected into the anti-displacement saccule through the water injection end of the anti-displacement saccule.

Example 1

As shown in fig. 1-3, a safe leak-proof urinary catheter includes: the catheter comprises a catheter 3, a balloon part with multiple urine leakage prevention and displacement prevention functions, and at least two water injection ends, a bladder flushing end 7 and a urine discharging end 8 which are arranged at the tail end of the catheter 3, wherein the balloon part is arranged on the wall of the catheter 3, the inside of the balloon part is communicated with the water injection ends, and water is injected into the balloon part through the water injection ends; the head end of the catheter 3 is provided with a side hole 1 for catheterization, the side hole 1 is communicated with a bladder flushing end 7 and a urination end 8 through a third channel 11 arranged in the catheter 3 and is respectively used for flushing the bladder and urination, specifically, the bladder flushing end 7 and the urination end 8 are gathered into one path and are communicated with the side hole 1 through the third channel 11, wherein physiological saline is injected into a single channel arranged in the bladder flushing end 7 and flows into the bladder through the third channel 11 and the side hole 1 for flushing, a single channel arranged in the urination end 8 is communicated with the third channel 11 for urination, and urine is discharged through the single channels in the side hole 1, the third channel 11 and the urination end 8 in sequence; the third channel 11 is a single channel.

In the embodiment, the balloon part consists of a bladder fixing balloon 2 and an anti-displacement balloon 4, the bladder fixing balloon 2 is arranged at the side close to the side hole 1 and is communicated with a water injection end 9 of the fixing balloon through a second channel 10 arranged in the catheter 3, and the bladder fixing balloon 2 is in a water drop shape after being injected with water; the anti-displacement saccule 4 is arranged at the side far away from the side hole 1 and communicated with the water injection end 6 of the anti-displacement saccule through a first channel 5 arranged inside the catheter 3, and the anti-displacement saccule 4 is cylindrical after being injected with water.

In the embodiment, the bladder fixing balloon 2 consists of a first balloon 13 and a second balloon 14 which are integrated and have communicated inner cavities, the first balloon 13 is arranged on the side far away from the urethral catheterization hole, the second balloon 14 is arranged on the side close to the urethral hole, and the head end of the channel II is positioned inside the first balloon 13; the second balloon 14 and the side hole 1 are placed in the bladder, the first balloon 13 is placed in the urethra, after water injection, the second balloon 14 is tightly attached to a bladder mucous membrane at the position of the urethra inner hole, the first balloon 13 blocks the urethra inner hole, the urethra inner hole is located between the first balloon 13 and the second balloon 14, urine leakage is prevented, and meanwhile the catheter is prevented from moving.

In this embodiment, the outer surface of the cylindrical anti-displacement balloon 4 is provided with 3 annular ridge protruding structures 12 distributed at intervals, and the annular ridge protruding structures can increase friction coefficients, so that anti-skidding and anti-displacement effects are increased. Meanwhile, the anti-displacement balloon 4 plays a role in fixing the bladder fixing balloon 2 and is attached to the inner wall of the urethra more tightly.

In the present embodiment, the maximum volume of the displacement prevention balloon 4 is 10ml, the maximum inflation diameter is 1.2cm, and the length is 3 cm.

In the present embodiment, the maximum volume of the bladder fixing balloon 2 is 35ml, and the maximum diameter is 3 cm.

In the present embodiment, the bladder fixation balloon 2 and the displacement prevention balloon 4 are both made of silica gel.

In the present embodiment, the outer diameter of the catheter 3 is 18 Fr; the length of the conduit 3 is 40 cm; the head end of the catheter 3 body is in a semi-elliptical shape.

Example 2

A safe leak-proof urinary irrigation catheter comprising: the catheter comprises a catheter 3, a balloon part with multiple urine leakage prevention and displacement prevention functions, and at least two water injection ends, a bladder flushing end 7 and a urine discharging end 8 which are arranged at the tail end of the catheter 3, wherein the balloon part is arranged on the wall of the catheter 3, the inside of the balloon part is communicated with the water injection ends, and water is injected into the balloon part through the water injection ends; the head end of the catheter 3 is provided with a side hole 1 for catheterization, and the side hole 1 is communicated with a bladder irrigation end 7 and a urination end 8 through a third channel 11 arranged in the catheter 3 and is respectively used for irrigating the bladder and urinating.

In the embodiment, the balloon part consists of a bladder fixing balloon 2 and an anti-displacement balloon 4, the bladder fixing balloon 2 is arranged at the side close to the side hole 1 and is communicated with a water injection end 9 of the fixing balloon through a second channel 10 arranged in the catheter 3, and the bladder fixing balloon 2 is in a water drop shape after being injected with water; the anti-displacement balloon 4 is arranged on the side far away from the side hole 1 and communicated with the anti-displacement balloon water injection end 6 through a first channel 5 arranged in the catheter 3, and the anti-displacement balloon 4 is wavy after being injected with water.

In the embodiment, the bladder fixing balloon 2 consists of a first balloon 13 and a second balloon 14 which are integrated and communicated with each other in inner cavities, the first balloon 13 is arranged on the side far away from the urethral catheterization hole, the second balloon 14 is arranged on the side close to the urethral catheterization hole, and the head end of the channel II is positioned inside the first balloon 13; the second balloon 14 and the side hole 1 are placed in the bladder, the first balloon 13 is placed in the urethra, after water is injected, the second balloon 14 is tightly attached to a bladder mucous membrane at the position of the urethra inner opening, the first balloon 13 blocks the urethra inner opening (the connection position of the bladder and the urethra), the urethra inner opening is located between the first balloon 13 and the second balloon 14, urine leakage is prevented, and the catheter is prevented from moving.

In this embodiment, the wave-shaped anti-displacement sacculus 4 comprises two sacculus I with smooth surfaces and a sacculus II with a plurality of floating points on one surface, the sacculus II and the sacculus I distributed at intervals form a wave-shaped structure integrally after water injection, the head end and the tail end of the anti-displacement sacculus 4 are both the sacculus I, and the sacculus II is arranged between the head sacculus I and the tail sacculus I. The diameter of each sacculus in the anti-displacement sacculus 4 increases gradually, and each sacculus I and the sacculus II are cylindrical after water injection.

In the present embodiment, the maximum volume of the displacement prevention balloon 4 is 10ml, the maximum inflation diameter is 1.2cm, and the length is 4 cm.

In the present embodiment, the maximum volume of the bladder fixing balloon 2 is 35ml, and the maximum diameter is 3 cm.

In the present embodiment, the bladder fixation balloon 2 and the displacement prevention balloon 4 are both made of rubber.

In the present embodiment, the outer diameter of the catheter 3 is 16 Fr; the length of the conduit 3 is 30 cm; the head end of the catheter 3 body is in a semi-elliptical shape.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A safe leak-proof urinary irrigation catheter, comprising: the catheter comprises a catheter (3), a balloon part with multiple urine leakage prevention and displacement prevention functions, and at least two water injection ends, a bladder flushing end (7) and a urination end (8) which are arranged at the tail end of the catheter (3), wherein the balloon part is arranged on the wall of the catheter (3), is internally communicated with the water injection end, and injects water into the balloon part through the water injection end; the head end of the catheter (3) is provided with a side hole (1) for catheterization, and the side hole (1) is communicated with the bladder irrigation end (7) and the urination end (8) through a channel arranged in the catheter (3) and is respectively used for irrigating the bladder and urinating.

2. The safe urine leakage prevention irrigation urinary catheter according to claim 1, wherein the balloon part is composed of a bladder fixing balloon (2) and a displacement prevention balloon (4), the bladder fixing balloon (2) is arranged at the side close to the side hole (1) and communicated with a water injection end (9) of the fixing balloon through a second channel (10) arranged inside the catheter (3), and the bladder fixing balloon (2) is in a water drop shape after being injected with water; the anti-displacement saccule (4) is arranged at the side far away from the side hole (1) and communicated with the water injection end (6) of the anti-displacement saccule through a first channel (5) arranged in the catheter (3), and the shape of the anti-displacement saccule (4) after water injection is cylindrical or wavy.

3. The safe urine leakage prevention urinary irrigation catheter according to claim 2, wherein the bladder fixing balloon (2) is composed of a first balloon (13) and a second balloon (14) which are integrated and communicated with each other in inner cavities, the first balloon (13) is arranged on the side far away from the urethral catheterization hole, the second balloon (14) is arranged on the side close to the urethral hole, and the head end of the second channel is positioned inside the first balloon (13); the second balloon (14) and the side hole (1) are placed in the bladder, the first balloon (13) is placed in the urethra, after water is injected, the second balloon (14) is tightly attached to a bladder mucous membrane at the position of the urethra inner opening, the first balloon (13) blocks the urethra inner opening, the urethra inner opening is located between the first balloon (13) and the second balloon (14), urine leakage is prevented, and the catheter is prevented from moving.

4. A safe urine leakage prevention irrigation catheter according to claim 2, wherein the outer surface of the cylindrical displacement prevention balloon (4) is provided with a plurality of annular ridge convex structures (12) distributed at intervals.

5. The safe urine leakage prevention irrigation urinary catheter according to claim 2, wherein the wave-shaped displacement prevention balloon (4) comprises at least two balloons I with smooth surfaces and at least one balloon II with a plurality of floating point protrusions on one surface, the balloons II and the balloons I are distributed at intervals and integrally form a wave-shaped structure after water injection, the balloons at the head end and the tail end of the displacement prevention balloon (4) are the balloons I, and the balloons II are arranged between the head balloon I and the tail balloon I.

6. The safe urine leakage prevention irrigation urinary catheter according to claim 5, wherein the diameter of each balloon in the displacement prevention balloon (4) is gradually increased, and each balloon I and each balloon II are cylindrical after being filled with water.

7. A safe urine leakage prevention irrigation urinary catheter according to claim 2, wherein the maximum capacity of the displacement prevention balloon (4) is 10ml, the maximum inflated diameter is 1.2cm and the length is 2-5 cm.

8. A safe leak-proof urine irrigation urinary catheter according to claim 2, characterized in that the bladder fixation balloon (2) has a maximum capacity of 35ml and a maximum diameter of 3 cm.

9. The safe urine leakage prevention irrigation urinary catheter according to claim 2, wherein the bladder fixation balloon (2) and the displacement prevention balloon (4) are made of rubber, silica gel, polyurethane, polypropylene or polytetrafluoroethylene.

10. The safety leak-proof urinary irrigation catheter according to claim 1, wherein the outer diameter of the catheter (3) is 6-22 Fr; the length of the conduit (3) is 30-40 cm; the head end of the catheter (3) body is in a semi-elliptical shape.

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