Background
Catheterization is a conventional operation technology which medical staff must master, and is a process of inserting a catheter into a bladder through an external orifice of a urethra, so that the catheter plays a role in draining urine. The common clinical catheter mainly comprises a double-cavity catheter and a three-cavity catheter, wherein the double-cavity catheter comprises a main tube body, a fixed saccule water injection end and a urination end which are connected at the rear end of the main tube body, a urination hole communicated with the urination end and a spherical bladder fixed saccule communicated with the fixed saccule water injection end are arranged on the front tube wall of the main tube body, and a bladder flushing end communicated with the urination hole is additionally arranged at the rear end of the main tube body on the basis of the double-cavity catheter. When the device is clinically applied, 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 urethra external orifice, then the bladder fixing balloon is filled by water injection 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 urethra internal orifice.
When the urinary catheter is in actual use, the phenomenon of urine leakage of men frequently occurs, so that the recording of urine volume is affected, the workload of medical staff is increased, and the embarrassing mind of a patient is more easily caused by urine pollution on the bed sheets and trousers. Aiming at the problem of urine leakage, the invention of the publication No. CN 209033489U discloses a urine leakage prevention catheter which is convenient to flush, a round table-shaped leakage prevention balloon is arranged on a main pipe body close to the rear end of a bladder fixing balloon, and the invention of the publication No. CN 210057103U discloses a urine leakage prevention catheter, an elastic valve which wraps the bladder fixing balloon is arranged on the main pipe body, and a conical leakage prevention balloon which surrounds the outer wall of the pipe body is formed when the bladder fixing balloon is filled. The above patent is mainly to increase leak protection sacculus, and conical leak protection sacculus is more fit with the bladder wall around the urethral orifice, and the toper sacculus is bigger with bladder mucosa contact surface, has certain leak protection urine function. However, due to the lack of direct force on the contact surface, the pressure of the balloon to the bladder is smaller, and when the leak-proof balloon is active, urine can still flow to the inner urethral orifice through the gap between the balloon and the bladder fold, so that the occurrence of urine leakage is caused. In addition, when the bladder-fixing balloon is overfilled, the head-end urinary catheter stimulates the bladder wall more greatly, and pain is easily caused to the patient.
The bladder under filling state, its inner wall is smooth, the bladder fixed saccule is closely attached to inner orifice of urethra, when the bladder is empty, the bladder volume is reduced, the bladder inner wall produces the radial shape bladder fold taking inner orifice of urethra as centre, at this moment bladder fixed saccule will keep away from inner orifice of urethra, there is gap between bladder fixed saccule and bladder wall, cause urine to flow into inner orifice of urethra through fold gap; the bladder fixing balloon is in a sphere shape, the bladder wall close to the inner urethral orifice is in a funnel shape in the empty state, the contact area between the bladder fixing balloon and the funnel-shaped bladder wall is small, and urine easily flows into the inner urethral orifice through a gap between the bladder fixing balloon and the funnel-shaped bladder wall; and 4, three physiological strictures exist in the inner urethral orifice, the narrow part and the outer urethral orifice of the urethra, and after the urinary catheter passes through the three strictures, gaps exist between other parts of the urethra and the main urethral catheter body, the gaps are smaller under the action of the smooth urethral muscle, but the old, coma, paraplegia, diabetes and other patients have loose smooth urethral muscle, the gaps between the main urethral catheter body and the urethra are larger, and the urine at the inner urethral orifice can flow out through the gaps. The analysis of the cause of urine leakage can be performed by 1 increasing the pressure of the saccule on the bladder mucosa at the urethral orifice, 2 increasing the contact area between the saccule near the urethral orifice and the bladder wall at the urethral orifice, 3 reducing the detail between the saccule and the urethral orifice, and 4 reducing the gap between the catheter and the urethral mucosa.
Disclosure of Invention
According to the existing catheter, the direct acting force is lack on the contact surface of the balloon and the bladder mucosa, so that the pressure of the balloon to the bladder is small, when the leak-proof balloon is active, urine can still flow to the inner urethral orifice through the gap between the balloon and the bladder fold to cause the occurrence of urine leakage, and in addition, when the bladder fixing balloon is excessively filled, the head end urinary catheter stimulates the bladder wall greatly, so that pain of a patient is easily caused, and the automatic leak-proof urine flushing catheter is provided. The invention mainly utilizes the bladder fixing balloon to simultaneously block the inner urethral orifice and the bladder wall near the inner urethral orifice to prevent the urine from leaking outwards, utilizes the absorption fiber in the second balloon to absorb the urine through the urine passing hole, expands the absorption fiber after absorbing the urine to gradually increase the diameter of the second balloon, can automatically adjust the diameter of the balloon according to the amount of the leaked urine until the balloon is completely attached to the urethra, further avoids the urine from leaking outwards, prevents the urinary tube from shifting outwards, and simultaneously pulls the urinary tube outwards to enable the bladder fixing balloon to press the inner urethral orifice and the bladder wall near the inner urethral orifice.
The invention adopts the following technical means:
An automatic leakage-proof urine flushing catheter comprises a catheter body, a balloon part with dual leakage-proof urine and displacement-proof functions, a water injection end, a bladder flushing end and a urine discharge end, wherein the water injection end, the bladder flushing end and the urine discharge end are arranged at the tail end of the catheter body, the balloon part consists of a first balloon arranged at an inner urethral orifice and a second balloon with an automatic urine leakage absorption function, the first balloon and the second balloon are arranged on the wall of the catheter body, the water injection end is connected with the first balloon and is used for injecting water into the first balloon, the head end of the catheter body is provided with a urine guiding hole, the urine guiding hole is communicated with the bladder flushing end and the urine discharge end through a first channel arranged in the catheter body and is used for flushing the bladder and discharging urine, and the first balloon is arranged between the urine guiding hole and the second balloon.
Further, the first balloon is a bladder fixing balloon, is communicated with the water injection end through a second channel arranged in the catheter body, is water-drop-shaped after water injection, and blocks the inner urethral orifice and the bladder wall near the inner urethral orifice in the water injection state;
The first balloon consists of a first balloon and a second balloon, wherein the first balloon and the second balloon are integrated, the inner cavity of the first balloon is communicated, 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 catheterization hole, the head end of the second channel is positioned in the first balloon, the second balloon and the urethral catheterization hole are arranged in the bladder, the first balloon is arranged in the urethra, the second balloon is tightly attached to the bladder mucosa at the urethral orifice after water injection, the first balloon blocks the urethral orifice, and the urethral orifice is positioned between the first balloon and the second balloon, so that urine leakage is prevented, and meanwhile, the urinary catheter is prevented from shifting.
Further, the balloon II is of a semicircular or semi-elliptic structure after water injection, the balloon I is of a conical structure after water injection, and the tapering direction of the conical structure faces the tail end direction of the catheter body.
Further, the wall of the catheter body is provided with a conical or cylindrical groove structure in the circumferential direction, the second balloon is arranged in the groove structure and is a cylindrical balloon before absorbing urine, the inner cavity of the second balloon is filled with absorbing fibers, and the surface of the second balloon is provided with urine passing holes communicated with the inner cavity of the second balloon;
the length of the pipe wall at the groove structure is 2-5cm, and the length is 3cm.
Further, the outer diameter of the pipe 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 thickened, the absorption fiber is expanded after absorbing urine through the urine through hole, the second balloon is expanded along with the absorption fiber, the diameter of the absorption fiber is gradually increased until the second balloon completely blocks a gap between the balloon and the urethra to prevent the balloon from moving inwards, and the expanded second balloon is conical and gradually reduced towards the head end of the catheter body.
Further, the cylindrical groove structure is internally provided with the string-shaped balloons connected end to end, the inner cavities of the balloons in the string-shaped balloons are communicated, the density of the filled absorption fibers is gradually increased, leaked urine is automatically absorbed through the urine passing holes, the absorption fibers in the balloons expand into a spherical shape or an elliptic spherical shape after absorbing the urine, gaps between the balloons and the urethra are blocked, and displacement in the balloons is prevented.
Further, the first balloon had a maximum capacity of 35ml and a maximum diameter of 2cm.
Further, the second balloon has a maximum inflated diameter of 1.2cm.
Further, the number of the balloons in the string-shaped balloons is 3-6, and the maximum diameter of the balloon is 1cm.
Further, the first balloon and the second balloon are made of rubber, silica gel, polyurethane, polypropylene or polytetrafluoroethylene;
The outer diameter of the catheter body is 6-22Fr, specifically 6, 8, 10, 12, 14, 16, 18, 20 or 22Fr, preferably 18Fr, the length of the catheter body is 30-40cm, preferably 40cm, and the head end of the catheter body is semi-elliptical.
Compared with the prior art, the invention has the following advantages:
1. the automatic leakage-proof urine flushing catheter provided by the invention has the advantages that the bladder fixing saccule can simultaneously block the inner urethral orifice and the bladder wall near the inner urethral orifice, so that the urine leakage is prevented.
2. According to the automatic urine leakage prevention flushing catheter provided by the invention, the urine can be absorbed by the absorption fiber through the urine passing hole on the surface of the cylindrical balloon, the diameter of the cylindrical balloon is gradually increased after the urine is absorbed, and the diameter of the balloon can be automatically adjusted according to the urine leakage amount until the balloon is completely attached to the urethra, so that the urine leakage is avoided.
3. The automatic leakage-proof urine flushing catheter provided by the invention can prevent the inner movement of the catheter after absorbing the urine filling saccule by absorbing the fiber, and simultaneously, the catheter is pulled outwards to enable the bladder fixing saccule to press the inner urethral orifice and the bladder wall near the inner urethral orifice.
In sum, the technical scheme of the invention can solve the problems that the pressure of the balloon to the bladder ratio is small due to the lack of direct acting force on the contact surface of the balloon and the bladder mucosa in the existing catheter, when the leak-proof balloon is active, urine can still flow to the inner urethral orifice through the gap between the balloon and the bladder fold to cause the leak of urine, and in addition, when the bladder fixing balloon is overfilled, the head-end urinary catheter stimulates the bladder wall greatly, and pain of a patient is easy to cause.
For the reasons, the invention can be widely popularized in the fields of medical treatment and the like.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As shown in the figure, the invention provides an automatic urine leakage prevention flushing catheter which comprises a catheter body 3, a balloon part with dual urine leakage prevention and displacement prevention functions, 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 an inner urethral orifice and a second balloon 4 with an automatic urine leakage absorption function, the first balloon 2 is arranged on the wall of the catheter body 3, the water injection end 8 is connected with the first balloon 2 and is used for injecting water into the first balloon 2, a catheter hole 1 is arranged at the head end of the catheter body 3, the catheter hole 1 is communicated with the bladder flushing end 6 and the urination end 7 through a first channel 5 arranged in the catheter body 3 and is respectively used for flushing a bladder and urinating, and the first balloon 2 is arranged between the catheter hole 1 and the second balloon 4.
As 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 shape of the first balloon 2 after water injection is in a water drop shape, and the inner urethral orifice and the bladder wall near the inner urethral orifice are blocked in the 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 an inner cavity, 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, the head end of the channel II 9 is positioned in the first balloon 10, the second balloon 11 and the urethral catheterization hole 1 are placed in the bladder, the first balloon 10 is arranged in the urethra, after water injection, the second balloon 11 is tightly attached to the bladder mucosa at the urethral orifice, the first balloon 10 blocks the urethral orifice, and the urethral orifice is positioned between the first balloon 10 and the second balloon 11 to prevent urine from leaking outwards and prevent the urethral catheter from shifting.
As a preferred embodiment, the second balloon 11 is of a semicircular or semi-elliptical structure after being injected with water, the first balloon 10 is of 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.
As a preferred embodiment, the wall of the catheter body 3 is provided with a conical or cylindrical groove structure in the circumferential direction, 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 absorbing fibers, and the surface of the second balloon 4 is provided with a urine passing hole communicated with the inner cavity of the second balloon;
the length of the pipe wall at the groove structure is 2-5cm.
As a preferred embodiment, the outer diameter of the tube wall at the conical groove structure gradually decreases towards the tail end of the catheter body 3, the thickness of the absorption fiber gradually increases, the absorption fiber expands after absorbing urine through the hole, the second balloon 4 expands along with the absorption fiber and gradually increases in diameter until the gap between the balloon and the urethra is completely blocked to prevent the inner movement of the balloon, and the expanded second balloon 4 is conical and gradually reduces towards the head end of the catheter body 3.
As the preferred implementation mode, the cylindrical groove structure is internally provided with the string-shaped sacculus connected end to end, the inner cavities of the sacculus are communicated, the inner cavities are filled with the absorption fibers, the density of the filled absorption fibers is gradually increased, the leaked urine is automatically absorbed through the urine passing holes, the absorption fibers in the sacculus are expanded into a sphere or an elliptic sphere after absorbing the urine, the gap between the sacculus and the urethra is blocked, and the displacement in the sacculus is prevented.
As a preferred embodiment, the maximum capacity of the first balloon 2 is 35ml and the maximum diameter is 2cm.
As a preferred embodiment, the maximum inflated diameter of the second balloon 4 is 1.2cm.
As a preferred embodiment, the number of the balloons in the string-shaped balloons is 3-6, and the maximum diameter of the balloons is 1cm.
As a preferable embodiment, the materials of the first balloon 2 and the second balloon 4 are rubber, silica gel, polyurethane, polypropylene, polytetrafluoroethylene, or the like;
the outer diameter of the catheter body 3 is 6-22Fr, specifically 6, 8, 10, 12, 14, 16, 18, 20 or 22Fr, the length of the catheter body 3 is 30-40cm, and the head end of the catheter body 3 is semi-elliptical.
Example 1
As shown in figures 1-4, the automatic urine leakage prevention flushing 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 an inner urethral orifice and a second balloon 4 with an automatic urine leakage absorption function, the first balloon 2 is arranged on the wall of the catheter body 3, the water injection end 8 is connected with the first balloon 2 and is used for injecting water into the first balloon 2, a urine guiding hole 1 is arranged at the head end of the catheter body 3, the urine guiding hole 1 is communicated with the bladder flushing end 6 and the urine discharge end 7 through a first channel 5 arranged in the catheter body 3, and specifically, the bladder flushing end 6 and the urine discharge end 7 are converged on one channel and are communicated with the urine guiding hole 1 through the first channel 5, physiological saline injected into the single channel arranged in the bladder flushing end 6 is flushed through the first channel 5 and the urine guiding hole 1, the single channel arranged in the urine discharge end 7 is communicated with the first channel 5 and the urine discharging end 4 through the first channel 1 and the urine guiding hole 4. The first channel 5 is a single channel.
In the embodiment, the first balloon 2 is a bladder fixing balloon, the first balloon 2 is communicated with the water injection end 8 through the second channel 9 arranged in the catheter body 3, the shape of the first balloon 2 is in a water drop shape after water injection, the first balloon 2 blocks an inner urethral orifice and bladder walls near the inner 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, the first balloon 10 is arranged at the side far from the urethral catheterization hole 1, the second balloon 11 is arranged at the side close to the urethral catheterization hole 1, the head end of the second channel 9 is positioned in the first balloon 10, the second balloon 11 and the urethral catheterization hole 1 are arranged in the bladder, the first balloon 10 is arranged in the urethra, the second balloon 11 is clung to bladder mucous membranes at the inner urethral orifice after water injection, the first balloon 10 blocks the inner urethral orifice (the joint of the bladder and the urethral catheter), the inner urethral orifice is positioned between the first balloon 10 and the second balloon 11, and urine leakage is prevented, and the catheter is prevented from shifting. The maximum capacity of the first balloon 2 was 35ml and the maximum diameter was 2cm.
In this embodiment, the balloon two 11 is semicircular after being injected with water, the balloon one 10 is tapered 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, the wall of the catheter body 3 is provided with a conical groove structure in the circumferential direction, 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 absorbing fibers, the surface of the second balloon 4 is provided with urine passing holes communicated with the inner cavity of the second balloon, and the length of the wall of the groove structure is 3cm.
In this embodiment, the outer diameter of the tube wall at the conical groove structure gradually decreases toward the tail end of the catheter body 3, the thickness of the absorption fiber gradually increases, the absorption fiber expands after absorbing urine through the urine passing hole, the second balloon 4 expands and the diameter gradually increases until the gap between the balloon and the urethra is completely blocked to prevent the movement of the balloon, and the expanded second balloon 4 is conical and gradually tapers toward the head end of the catheter body 3. The maximum inflated diameter of the second balloon 4 is 1.2cm.
In this embodiment, the first balloon 2 and the second balloon 4 are made of silica gel, the outer diameter of the catheter body 3 is 18Fr, the length of the catheter body 3 is 40cm, and the head end of the catheter body 3 is semi-elliptical.
The catheter is used by wiping liquid paraffin at the front section of the catheter body, fully inserting the head end of the catheter body through the external orifice of the urethra, injecting 110ml of saline through the water injection end of the bladder fixing saccule, and pulling the urinary catheter back to enable the bladder fixing saccule to be close to the bladder wall near the internal orifice of the urethra. If urine leaks from the bladder fixing balloon, the absorption fiber can absorb the urine through the urine passing hole on the surface of the second balloon, the absorption fiber is expanded after absorbing the urine, the second balloon is gradually increased in sequence, the diameters of the balloons at each section can be automatically adjusted according to the leakage urine amount until the balloons are completely attached to the urethra, and the urine is prevented from leaking outwards.
Example 2
An automatic urine leakage prevention flushing catheter comprises a catheter body 3, a balloon part with dual urine leakage prevention and displacement prevention functions, 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 an inner urethral orifice and a second balloon 4 with an automatic urine leakage absorption function, the first balloon 2 and the second balloon 4 are arranged on the wall of the catheter body 3, the water injection end 8 is connected with the first balloon 2 to inject water into the first balloon 2, a catheter hole 1 is arranged at the head end of the catheter body 3, the catheter hole 1 is communicated with the bladder flushing end 6 and the urination end 7 through a first channel 5 and is respectively used for flushing the bladder and urination, and the first balloon 2 is arranged between the catheter hole 1 and the second balloon 4.
In the embodiment, the first balloon 2 is a bladder fixing balloon, the first balloon 2 is communicated with the water injection end 8 through the second channel 9 arranged in the catheter body 3, the shape of the first balloon 2 is in a water drop shape after water injection, the first balloon 2 blocks the inner urethral orifice and the bladder wall near the inner 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 an inner cavity, 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, the head end of the second channel 9 is positioned in the first balloon 10, the second balloon 11 and the urethral catheterization hole 1 are arranged in the bladder, the first balloon 10 is arranged in the urethra, the second balloon 11 is clung to the bladder mucous membrane at the inner urethral orifice after water injection, the first balloon 10 blocks the inner urethral orifice, the inner urethral orifice is positioned between the first balloon 10 and the second balloon 11, and urine leakage is prevented, and meanwhile, the catheter is prevented from shifting. The maximum capacity of the first balloon 2 was 35ml and the maximum diameter was 2cm.
In this embodiment, the balloon two 11 is of a semi-elliptical structure after water injection, the balloon one 10 is of a tapered structure after water injection, and the tapered direction of the tapered structure faces the tail end direction of the catheter body 3.
In the embodiment, the wall of the catheter body 3 is provided with a cylindrical groove structure in the circumferential direction, 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 absorbing fibers, the surface of the second balloon 4 is provided with urine passing holes communicated with the inner cavity of the second balloon, and the length of the wall of the groove structure is 2cm.
In this embodiment, be equipped with the cluster sacculus of end to end in the cylindrical recess structure, the inner chamber of each sacculus is linked together in the cluster sacculus, all fills in each inner chamber has absorption fibre, and absorption fibre density of filling increases step by step, absorbs the urine that spills through the urine through hole is automatic, and the absorption fibre in each sacculus expands into spherical or oval sphere after absorbing the urine, blocks up the gap between sacculus and the urethra, prevents the intraductal aversion of sacculus. The number of the balloons in the string-shaped balloon is 4, and the maximum balloon diameter is 1cm.
In the present embodiment, the first balloon 2 and the second balloon 4 are made of rubber, the outer diameter of the catheter body 3 is 12Fr, the length of the catheter body 3 is 30cm, and the head end of the catheter body 3 is semi-elliptical.
It should be noted that the above embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present invention.