CN216986022U

CN216986022U - Automatic urine leakage-proof washing catheter

Info

Publication number: CN216986022U
Application number: CN202121331110.8U
Authority: CN
Inventors: 高秀珍; 张�诚
Original assignee: Shanghai East Hospital Tongji University Affiliated East Hospital
Current assignee: Shanghai East Hospital Tongji University Affiliated East Hospital
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2022-07-19
Anticipated expiration: 2031-06-15

Abstract

The utility model provides an automatic urine leakage prevention washing catheter, which comprises: the catheter comprises a catheter body, a balloon part with double urine leakage prevention and displacement prevention functions, and a water injection end, a bladder flushing end and a urine discharging end which are arranged at the tail end of the catheter body, wherein the balloon part consists of a first balloon arranged at an inner opening of a urethra and a second balloon with the function of automatically absorbing leaked urine, and is arranged on the wall of the catheter body; the head end of the catheter body is provided with a urethral catheterization hole which is communicated with the bladder irrigation end and the urination end through a first channel and is respectively used for irrigating the bladder and urinating; the first balloon is disposed between the urethral opening and the second balloon. The utility model has the functions of automatically absorbing leaked urine, blocking the urethra and the entrance of the urethra, preventing urine leakage and displacement.

Description

Automatic urine leakage-proof washing catheter

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an automatic 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-proof sacculus, and conical leak-proof sacculus more agrees with the bladder wall around the internal orifice of urethra, and conical sacculus and bladder mucous membrane contact surface are bigger, have certain leak-proof function of urine. However, due to the lack of direct force on the contact surface, the pressure of the balloon against the bladder is relatively small, and when the leak-proof balloon is activated, urine can still flow to the inner opening of the urethra through the gap between the balloon and the bladder folds to cause 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 urethra inner opening 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 urethra inner opening through a gap between the bladder fixing balloon and the funnel-shaped bladder wall; 3. when the bladder is fixed and the funnel-shaped bladder wall outer opening is close to each other, a larger space is formed between the bladder fixing saccule and the urethra inner opening, and urine in the secondary space can be extruded into the urethra through the urethra inner opening under the compression of the bladder and 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. reduce 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 of the balloon and the bladder mucosa 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 the bladder folds to cause urine leakage; in addition, after the bladder fixing saccule is excessively filled, the tip ureter has large stimulation to the bladder wall, so that the technical problem of pain of a patient is easily caused, and the automatic urine leakage prevention irrigation catheter is provided. The utility model mainly utilizes the bladder fixing saccule to simultaneously block the internal orifice of the urethra and the bladder wall near the internal orifice of the urethra, thereby preventing urine from leaking outwards; utilize the absorption fibre in the second sacculus to pass through urine clearing hole absorption urine, absorb the fibre inflation and make second sacculus diameter crescent behind the urine, can be according to the diameter that spills urine volume automatically regulated sacculus, until sacculus and urethra laminate completely, and then avoid the urine to leak outward, prevent aversion in the ureter, draw the ureter outward simultaneously, can make the fixed sacculus of bladder oppress the urinary tract internal orifice and near the bladder wall of the internal orifice of urethra.

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

an automatic leak-proof urine irrigation urinary catheter comprising: the catheter comprises a catheter body, a balloon part with double urine leakage prevention and displacement prevention functions, and a water injection end, a bladder flushing end and a urine discharge end which are arranged at the tail end of the catheter body, wherein the balloon part consists of a first balloon arranged at an inner opening of a urethra and a second balloon with the function of automatically absorbing leaked urine, the first balloon, the bladder flushing end and the urine discharge end are arranged on the wall of the catheter body, and the water injection end is connected with the first balloon to inject water into the first balloon; the head end of the catheter body is provided with a urethral catheterization hole which is communicated with the bladder irrigation end and the urination end through a first channel arranged in the catheter body and is respectively used for irrigating the bladder and urinating; the first balloon is disposed between the urethral opening and the second balloon.

Furthermore, the first balloon is a bladder fixing balloon and is communicated with the water injection end through a second channel arranged in the catheter body, the first balloon is in a water drop shape after water injection, and the inner opening of the urethra and the bladder wall near the inner opening of the urethra are blocked in the water injection state;

the first 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 second channel is positioned inside the first balloon; the second balloon and the urethral catheterization hole are placed in the bladder, the first balloon is placed 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.

Furthermore, the second balloon is of a semicircular or semi-elliptical structure after water injection, the first balloon is of a conical structure after water injection, and the reducing direction of the conical structure faces the tail end direction of the catheter body.

Furthermore, a conical or cylindrical groove structure is arranged on the pipe wall of the catheter body in the circumferential direction, and the second balloon is arranged in the groove structure and is a cylindrical balloon before absorbing urine; the inner cavity of the second sacculus is filled with absorption fibers; the surface of the second balloon is provided with a urine through hole communicated with the inner cavity of the second balloon;

the length of the pipe wall at the groove structure is 2-5cm, and the preferred length is 3 cm.

Furthermore, the outer diameter of the tube wall at the conical groove structure is gradually reduced towards the tail end of the catheter body, the thickness of the absorption fiber is gradually increased, the absorption fiber is expanded after absorbing urine through the urine through holes, the second balloon is expanded along with the expansion and the diameter of the second balloon is gradually increased until the gap between the balloon and the urethra is completely blocked, and the displacement in the balloon is prevented; the second balloon which is inflated is conical, and the reducing direction faces to the head end direction of the catheter body.

Further, be equipped with the cluster form sacculus of end to end in the cylindrical groove structure, the inner chamber of each sacculus is linked together in the cluster form sacculus, all packs in each inner chamber and has absorbed the fibre, and the absorbed fibre density of packing increases step by step, through the automatic urine that spills of absorbing of urine clearing hole, the absorption fibre in each sacculus expands after absorbing the urine and is spherical or oval spherical, blocks up the gap between sacculus and the urethra, prevents to shift in the sacculus.

Further, the first balloon has a maximum capacity of 35ml and a maximum diameter of 2 cm.

Further, the maximum inflated diameter of the second balloon is 1.2 cm.

Furthermore, the number of the saccules in the string-shaped saccule is 3-6, and the maximum saccule diameter is 1 cm.

Furthermore, the first balloon and the second balloon are made of rubber, silica gel, polyurethane, polypropylene or polytetrafluoroethylene;

the catheter body has an outer diameter of 6-22Fr, in particular 6, 8, 10, 12, 14, 16, 18, 20 or 22Fr, preferably 18 Fr; the length of the catheter body 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 automatic urine leakage prevention irrigation catheter, the bladder fixing saccule can block the inner opening of the urethra and the bladder wall near the inner opening of the urethra at the same time, and urine leakage is prevented.

2. According to the automatic urine leakage prevention washing catheter provided by the utility model, the absorption fiber can absorb urine through the urine through holes on the surface of the cylindrical saccule, the diameter of the cylindrical saccule is gradually increased after the urine is absorbed, the diameter of the saccule can be automatically adjusted according to the urine leakage amount until the saccule is completely attached to a urethra, and further urine leakage is avoided.

3. The automatic urine leakage prevention irrigation catheter provided by the utility model can prevent the inner displacement of the urinary catheter after the absorption fiber absorbs urine filling balloon, and meanwhile, the urinary catheter is pulled outwards, so that the bladder fixing balloon can press the inner opening of the urethra and the bladder wall near the inner opening of the urethra.

In conclusion, the technical scheme of the utility model can solve the problem that the prior catheter has small pressure to the bladder due to the lack of direct acting force on the contact surface of the balloon and the bladder mucous membrane, 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 problem of pain of a patient is easily caused.

Based on the reasons, the utility model can be widely popularized in 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 (bladder fixation balloon inflated, cylindrical balloon gradually inflated).

Fig. 4 is a schematic view of the present invention in an operational state (bladder fixation balloon inflated, cylindrical balloon fully inflated).

In the figure: 1. a urethral catheterization hole; 2. a first balloon; 3. a catheter body; 4. a second balloon; 5. a first channel; 6. a bladder irrigation end; 7. a urination end; 8. a water injection end; 9. a second channel; 10. a first balloon; 11. 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 in the figures, the present invention provides an automatic leak-proof urinary irrigation catheter comprising: the catheter comprises a catheter body 3, a balloon part with double urine leakage prevention and displacement prevention functions, and a water injection end 8, a bladder flushing end 6 and a urine discharge end 7 which are arranged at the tail end of the catheter body 3, wherein the balloon part consists of a first balloon 2 arranged at the inner opening of a urethra and a second balloon 4 with the function of automatically absorbing leaked urine, the first balloon 2 and the second balloon are arranged on the wall of the catheter body 3, and the water injection end 8 is connected with the first balloon 2 to inject water into the first balloon 2; the head end of the catheter body 3 is provided with a urethral catheterization hole 1, and the urethral catheterization hole 1 is communicated with a bladder irrigation end 6 and a urination end 7 through a first channel 5 arranged in the catheter body 3 and is respectively used for irrigating the bladder and urinating; the first balloon 2 is placed between the catheterization hole 1 and the second balloon 4.

In a preferred embodiment, the first balloon 2 is a bladder fixing balloon and is communicated with the water injection end 8 through a second channel 9 arranged in the catheter body 3, the first balloon 2 is in a drop shape after water injection, and blocks the internal urethral orifice and the bladder wall near the internal urethral orifice in a water injection state;

the first balloon 2 consists of a first balloon 10 and a second balloon 11 which are integrated and communicated with each other in inner cavities, the first balloon 10 is arranged on the side far away from the urethral orifice 1, the second balloon 11 is arranged on the side close to the urethral orifice 1, and the head end of the second channel 9 is positioned inside the first balloon 10; the second balloon 11 and the urethral catheterization hole 1 are placed in the bladder, the first balloon 10 is placed in the urethra, after water is injected, the second balloon 11 is tightly attached to a bladder mucous membrane at the position of the urethral orifice, the first balloon 10 blocks the urethral orifice, and the urethral orifice is located between the first balloon 10 and the second balloon 11, so that urine leakage is prevented, and the catheter is prevented from shifting.

In a preferred embodiment, the balloon 11 is in a semicircular or semi-elliptical structure after being filled with water, and the balloon 10 is in a tapered structure after being filled with water, wherein the tapered direction of the tapered structure faces the tail end direction of the catheter body 3.

As a preferred embodiment, a conical or cylindrical groove structure is arranged on the tube wall of the catheter body 3 in the circumferential direction, and the second balloon 4 is arranged in the groove structure and is a cylindrical balloon before absorbing urine; the inner cavity of the second balloon 4 is filled with absorption fibers; the surface of the second balloon 4 is provided with a urine through hole communicated with the inner cavity thereof;

the length of the pipe wall at the groove structure is 2-5 cm.

As a preferred embodiment, the outer diameter of the tube wall at the conical groove structure is gradually reduced towards the tail end direction of the catheter body 3, the thickness of the absorption fiber is gradually thickened, the absorption fiber is expanded after absorbing urine through the hole, the second balloon 4 is expanded along with the expansion and the diameter is gradually increased until the gap between the balloon and the urethra is completely blocked, and the balloon is prevented from being internally displaced; the inflated second balloon 4 is conical, and the reducing direction is towards the head end of the catheter body 3.

As a preferred implementation mode, string-shaped balloons which are connected end to end are arranged in the cylindrical groove structure, inner cavities of the balloons in the string-shaped balloons are communicated, absorption fibers are filled in the inner cavities, the density of the filled absorption fibers is increased step by step, leaked urine is automatically absorbed through the urine through holes, the absorption fibers in the balloons expand into a spherical shape or an elliptical spherical shape after absorbing the urine, gaps between the balloons and the urethra are blocked, and the balloons are prevented from displacing.

In a preferred embodiment, the first balloon 2 has a maximum volume of 35ml and a maximum diameter of 2 cm.

In a preferred embodiment, the maximum inflated diameter of the second balloon 4 is 1.2 cm.

In a preferred embodiment, the number of the balloons in the string-shaped balloon is 3-6, and the maximum balloon diameter is 1 cm.

In a preferred embodiment, the first balloon 2 and the second balloon 4 are made of rubber, silicone, polyurethane, polypropylene, polytetrafluoroethylene, or the like;

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

Example 1

As shown in fig. 1-4, an automatic leak-proof urinary irrigation catheter comprises: the catheter comprises a catheter body 3, a balloon part with double urine leakage prevention and displacement prevention functions, a water injection end 8, a bladder flushing end 6 and a urination end 7, wherein the water injection end 8, the bladder flushing end 6 and the urination end 7 are arranged at the tail end of the catheter body 3, the balloon part consists of a first balloon 2 arranged at an inner opening of a urethra and a second balloon 4 with the function of automatically absorbing leaked urine, the first balloon 2 and the second balloon are arranged on the wall of the catheter body 3, and the water injection end 8 is connected with the first balloon 2 to inject water into the first balloon 2; the head end of the catheter body 3 is provided with a urine guide hole 1, the urine guide hole 1 is communicated with a bladder flushing end 6 and a urine discharging end 7 through a channel I5 arranged in the catheter body 3 and is respectively used for flushing the bladder and discharging urine, specifically, the bladder flushing end 6 and the urine discharging end 7 are gathered together and are communicated with the urine guide hole 1 through the channel I5, physiological saline is injected into a single channel arranged in the bladder flushing end 6 and flows into the bladder through the channel I5 and the urine guide hole 1 for flushing, the single channel arranged in the urine discharging end 7 is communicated with the channel I5 for discharging urine, and the urine is discharged through the single channels in the urine guide hole 1, the channel I5 and the urine discharging end 7 in sequence; the first balloon 2 is placed between the urethral orifice 1 and the second balloon 4. The first channel 5 is a single channel.

In the embodiment, the first balloon 2 is a bladder fixing balloon and is communicated with the water injection end 8 through a second channel 9 arranged inside the catheter body 3, the first balloon 2 is in a water drop shape after water injection, and blocks the internal urethral orifice and the bladder wall near the internal urethral orifice in a water injection state; the first balloon 2 consists of a first balloon 10 and a second balloon 11 which are integrated and communicated with each other in inner cavities, the first balloon 10 is arranged on the side far away from the urethral catheterization hole 1, the second balloon 11 is arranged on the side close to the urethral hole 1, and the head end of the channel two 9 is positioned inside the first balloon 10; the second balloon 11 and the urethral catheterization hole 1 are placed in the bladder, the first balloon 10 is placed in the urethra, after water is injected, the second balloon 11 is tightly attached to a bladder mucous membrane at the position of the urethral orifice, the urethral orifice (the joint of the bladder and the urethra) is blocked by the first balloon 10, and the urethral orifice is located between the first balloon 10 and the second balloon 11, so that urine leakage is prevented, and the displacement of the catheter is prevented. The first balloon 2 has a maximum capacity of 35ml and a maximum diameter of 2 cm.

In this embodiment, the second balloon 11 is in a semicircular shape after being filled with water, the first balloon 10 is in a tapered structure after being filled with water, and the tapered direction of the tapered structure faces the tail end direction of the catheter body 3.

In the embodiment, the pipe wall of the catheter body 3 is provided with a conical groove structure in the circumferential direction, and the second balloon 4 is arranged in the groove structure and is in a cylindrical shape before absorbing urine; the inner cavity of the second balloon 4 is filled with absorption fibers; the surface of the second balloon 4 is provided with a urine through hole communicated with the inner cavity of the second balloon; the length of the pipe wall at the groove structure is 3 cm.

In the embodiment, the outer diameter of the tube wall at the conical groove structure is gradually reduced towards the tail end direction of the catheter body 3, the thickness of the absorption fiber is gradually thickened, the absorption fiber expands after absorbing urine through the hole, and the second balloon 4 expands and gradually increases in diameter along with the expansion until the gap between the balloon and the urethra is completely blocked, so that the displacement in the balloon is prevented; the inflated second balloon 4 is conical, and the tapering direction is towards the head end of the catheter body 3. The maximum inflated diameter of the second balloon 4 is 1.2 cm.

In the present embodiment, the first balloon 2 and the second balloon 4 are both made of silica gel; the outer diameter of the catheter body 3 is 18 Fr; the length of the catheter body 3 is 40 cm; the head end of the catheter body 3 is in a semi-elliptical shape.

The use of the utility model: liquid paraffin is wiped on the front section of the catheter body, the head end of the catheter body is completely inserted through the external urethral orifice, 110ml of saline is injected through the water injection end of the bladder fixing balloon, and the ureter is pulled back to enable the bladder fixing balloon to be close to the bladder wall near the internal urethral orifice. Wherein, if urine from the fixed sacculus of bladder takes place to spill, the absorption fibre can pass through the urine clearing hole on second sacculus surface and absorb the urine, absorbs the fibre inflation after the urine, and the second sacculus crescent in proper order can be according to the diameter of leaking each section sacculus of urine volume automatic adjustment, laminates completely with the urethra until sacculus, and then avoids the urine to leak outward.

Example 2

An automatic leak-proof urine irrigation urinary catheter comprising: the catheter comprises a catheter body 3, a balloon part with double urine leakage prevention and displacement prevention functions, and a water injection end 8, a bladder flushing end 6 and a urine discharge end 7 which are arranged at the tail end of the catheter body 3, wherein the balloon part consists of a first balloon 2 arranged at the inner opening of a urethra and a second balloon 4 with the function of automatically absorbing leaked urine, the first balloon 2 and the second balloon are arranged on the wall of the catheter body 3, and the water injection end 8 is connected with the first balloon 2 to inject water into the first balloon 2; the head end of the catheter body 3 is provided with a urethral catheterization hole 1, and the urethral catheterization hole 1 is communicated with a bladder irrigation end 6 and a urination end 7 through a first channel 5 and is respectively used for irrigating the bladder and urinating; the first balloon 2 is placed between the urethral orifice 1 and the second balloon 4.

In the embodiment, the first balloon 2 is a bladder fixing balloon and is communicated with the water injection end 8 through a second channel 9 arranged inside the catheter body 3, the first balloon 2 is in a water drop shape after water injection, and blocks the internal urethral orifice and the bladder wall near the internal urethral orifice in a water injection state; the first balloon 2 consists of a first balloon 10 and a second balloon 11 which are integrated and communicated with each other in inner cavities, the first balloon 10 is arranged on the side far away from the urethral orifice 1, the second balloon 11 is arranged on the side close to the urethral orifice 1, and the head end of the second channel 9 is positioned inside the first balloon 10; the second balloon 11 and the urethral catheterization hole 1 are placed in the bladder, the first balloon 10 is placed in the urethra, after water is injected, the second balloon 11 is tightly attached to a bladder mucous membrane at the position of the urethral orifice, the first balloon 10 blocks the urethral orifice, and the urethral orifice is located between the first balloon 10 and the second balloon 11, so that urine leakage is prevented, and the catheter is prevented from shifting. The first balloon 2 has a maximum capacity of 35ml and a maximum diameter of 2 cm.

In this embodiment, the second balloon 11 is in a semi-elliptical structure after being injected with water, the first balloon 10 is in a tapered structure after being injected with water, and the tapered direction of the tapered structure faces the tail end direction of the catheter body 3.

In the embodiment, a cylindrical groove structure is arranged on the pipe wall of the catheter body 3 in the circumferential direction, and the second balloon 4 is arranged in the groove structure and is a cylindrical balloon before absorbing urine; the inner cavity of the second balloon 4 is filled with absorption fibers; the surface of the second balloon 4 is provided with a urine through hole communicated with the inner cavity thereof; the length of the pipe wall at the groove structure is 2 cm.

In this embodiment, be equipped with the cluster form sacculus of end to end in the cylindrical groove structure, the inner chamber of each sacculus is linked together in the cluster form sacculus, all packs in each inner chamber and has absorbed the fibre, and the absorbed fibre density of packing increases step by step, through the automatic urine that spills of absorbing of urine clearing hole, the absorption fibre in each sacculus inflation after absorbing the urine is spherical or oval spherical, blocks up the gap between sacculus and the urethra, prevents to shift in the sacculus. The number of the saccules in the string-shaped saccule is 4, and the diameter of the largest saccule is 1 cm.

In the present embodiment, the first balloon 2 and the second balloon 4 are both made of rubber; the outer diameter of the catheter body 3 is 12 Fr; the length of the catheter body 3 is 30 cm; the head end of the catheter body 3 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 these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An automatic leak-proof urinary irrigation catheter, comprising: the catheter comprises a catheter body (3), a balloon part with double urine leakage prevention and displacement prevention functions, and a water injection end (8), a bladder flushing end (6) and a urination end (7) which are arranged at the tail end of the catheter body (3), wherein the balloon part consists of a first balloon (2) arranged at the inner opening of a urethra and a second balloon (4) with the function of automatically absorbing leaked urine, the first balloon and the second balloon are arranged on the wall of the catheter body (3), the water injection end (8) is connected with the first balloon (2), and water is injected into the first balloon (2); the head end of the catheter body (3) is provided with a urethral catheterization hole (1), and the urethral catheterization hole (1) is communicated with a bladder irrigation end (6) and a urination end (7) through a first channel (5) arranged in the catheter body (3) and is respectively used for irrigating the bladder and urinating; the first balloon (2) is arranged between the urethral catheterization hole (1) and the second balloon (4).

2. The automatic urine leakage prevention irrigation urinary catheter according to claim 1, wherein the first balloon (2) is a bladder fixing balloon and is communicated with the water injection end (8) through a second channel (9) arranged inside the catheter body (3), the first balloon (2) is in a water drop shape after water injection, and blocks the internal orifice of the urethra and the bladder wall near the internal orifice of the urethra in the water injection state;

the first balloon (2) is composed of a first balloon (10) and a second balloon (11) which are integrated and communicated with each other in inner cavities, the first balloon (10) is arranged on the side far away from the urethral catheterization hole (1), the second balloon (11) is arranged on the side close to the urethral catheterization hole (1), and the head end of the second channel (9) is positioned inside the first balloon (10); the second balloon (11) and the urethral catheterization hole (1) are placed in the bladder, the first balloon (10) is placed in the urethra, after water is injected, the second balloon (11) is tightly attached to a bladder mucous membrane at the position of the urethral internal opening, the urethral internal opening is blocked by the first balloon (10), and the urethral internal opening is located between the first balloon (10) and the second balloon (11), so that urine leakage is prevented, and the urethral catheter is prevented from moving.

3. The automatic urine leakage prevention irrigation catheter as claimed in claim 2, wherein the second balloon (11) is of a semicircular or semi-elliptical structure after being filled with water, and the first balloon (10) is of a tapered structure after being filled with water, and the tapered direction of the tapered structure faces the tail end direction of the catheter body (3).

4. The automatic urine leakage prevention washing urinary catheter as claimed in claim 1, wherein the wall of the catheter body (3) is provided with a groove structure in a conical or cylindrical shape in the circumferential direction, and the second balloon (4) is placed in the groove structure and is a cylindrical balloon before absorbing urine; the inner cavity of the second sacculus (4) is filled with absorption fibers; the surface of the second balloon (4) is provided with a urine through hole communicated with the inner cavity of the second balloon;

the length of the pipe wall at the groove structure is 2-5 cm.

5. The automatic urine leakage prevention washing catheter according to claim 4, wherein the outer diameter of the tube wall at the conical groove structure is gradually reduced towards the tail end of the catheter body (3), the thickness of the absorption fiber is gradually thickened, the absorption fiber is expanded after absorbing urine through the urine through hole, the second balloon (4) is expanded along with the expansion of the absorption fiber, the diameter of the second balloon is gradually increased until the gap between the balloon and the urethra is completely blocked, and the balloon is prevented from being internally displaced; the second balloon (4) is conical, and the reducing direction faces to the head end direction of the catheter body (3).

6. The automatic urine leakage prevention irrigation catheter according to claim 4, wherein string-shaped balloons connected end to end are arranged in the cylindrical groove structure, inner cavities of the balloons in the string-shaped balloons are communicated, absorption fibers are filled in the inner cavities, the density of the filled absorption fibers is gradually increased, leaked urine is automatically absorbed through the urine passing holes, and the absorption fibers in the balloons expand into a spherical shape or an elliptical spherical shape after absorbing the urine, so that gaps between the balloons and a urethra are blocked, and the balloons are prevented from shifting in the balloons.

7. The automatic urine leakage prevention irrigation urinary catheter according to claim 1 or 2, wherein the first balloon (2) has a maximum capacity of 35ml and a maximum diameter of 2 cm.

8. An automatic leak-proof urine irrigation urinary catheter according to claim 5, characterized in that the maximum inflated diameter of the second balloon (4) is 1.2 cm.

9. The automatic urine leakage prevention irrigation urinary catheter according to claim 6, wherein the number of the balloons in the string-shaped balloons is 3 to 6, and the maximum balloon diameter is 1 cm.

10. The automatic urine leakage prevention irrigation urinary catheter according to claim 1, wherein the first balloon (2) and the second balloon (4) are made of rubber, silica gel, polyurethane, polypropylene or polytetrafluoroethylene;

the outer diameter of the catheter body (3) is 6-22 Fr; the length of the catheter body (3) is 30-40 cm; the head end of the catheter body (3) is in a semi-elliptical shape.