CN110860025A - Urethral dilatation catheter for urethral stricture and using method thereof - Google Patents

Abstract

The invention discloses a urethral dilatation catheter for urethral stricture and a using method thereof, belonging to the technical field of medical instruments. A urethral dilatation catheter aiming at urethral stricture comprises a catheter, wherein a conical block is connected onto the catheter, a drainage tube, a first water injection tube, a second water injection tube, a third water injection tube, a fourth water injection tube and a fifth water injection tube are connected onto the catheter, a valve is connected onto the fifth water injection tube, a balloon, a first balloon, a second balloon, a third balloon and a fourth balloon are sequentially connected onto the outer wall of the catheter, the first water injection tube is connected with the first balloon, the second water injection tube is connected with the second balloon, the third water injection tube is connected with the third balloon, the fourth water injection tube is connected with the fourth balloon, the fifth water injection tube is connected with the balloon, and a sixth through hole is formed in the drainage tube through the outer wall of the catheter; the invention uses split type transverse expansion to relieve the pain of the patient, prevents infection, hemorrhage and false tract, utilizes the independently controlled air bag to perform targeted expansion, relieves the pain of the patient and improves the medical compliance of the patient.

Description

A kind of urethral dilation catheter for urethral stricture and using method thereof

technical field

The invention relates to the technical field of medical devices, in particular to a urethral dilation catheter for urethral stricture and a method for using the same.

Background technique

Urethral stricture is a common clinical urological disease, and most patients are male; in recent years, the incidence of urethral stricture caused by traffic accidents, endoluminal surgery, urinary system infection, etc. has been increasing, which seriously affects the normal life of patients; urethral stricture Mainly manifested as poor urination, difficulty urinating and thinning of urine flow, etc. With the progress of medicine, many new methods for the treatment of urethral stricture have emerged. The trauma is small, and the incidence of complications is lower, which has greater advantages in clinical treatment, and the scope of application is gradually expanding.

At present, the most widely used is endoluminal urethral stricture incision, and urethral dilatation is performed regularly after operation. Currently, metal dilators are clinically used in urethral dilation, which has potential safety hazards for sensitive parts of patients, and has many complications during operation. For example, bleeding, pain, infection and false tract formation, etc. On the one hand, once bleeding or infection occurs, urine will stimulate the wound to form new scars, which will affect the curative effect of urethral stricture. Tolerating dysuria rather than performing urethral dilation has resulted in a high recurrence rate of urethral strictures, poor cure rates, and the fact that most patients eventually have to accept urinary diversions; therefore, there is a need for a method that avoids infection and helps reduce Patient with painful urethral dilation catheter.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the deficiencies in the prior art, and propose a urethral dilation catheter for urethral stricture and a method of using the same.

In order to achieve the above object, the present invention adopts the following technical solutions:

A urethral dilation catheter for urethral stenosis, comprising a catheter, a positioning block is connected to the catheter, a cone block is connected to the catheter, a column groove is opened in the cone block, and the catheter is connected to There are a drainage pipe, a first water injection pipe, a second water injection pipe, a third water injection pipe, a fourth water injection pipe and a fifth water injection pipe, the fifth water injection pipe is connected with a valve, and the outer wall of the catheter is sequentially connected with a balloon, the first air bag, the second air bag, the third air bag and the fourth air bag, the first water injection pipe is connected to the first air bag through the first through hole, and the second water injection pipe is connected to the second air bag through the second through hole, The third water injection pipe is connected to the third air bag through the third through hole, the fourth water injection pipe is connected to the fourth air bag through the fourth through hole, and the fifth water injection pipe penetrates the outer wall of the catheter and has a fifth through hole. The fifth water injection pipe is connected to the balloon through a fifth through hole, and the drainage pipe is provided with a sixth through hole through the outer wall of the catheter.

Preferably, the length of the first air bag is less than 3 mm.

Preferably, the lengths of the second airbag, the third airbag and the fourth airbag are less than 5 mm.

Preferably, the distance between the balloon and the first balloon is 20mm.

Preferably, the diameter of the conduit is below 5 mm.

Preferably, the valve includes a valve body, a valve core, a spring and a sealing ring, the valve core is connected with a stopper and is integrally formed with the valve core, the valve core is slidably connected to the valve body, and the spring The two ends of the sealing ring are respectively abutted against the valve body and the stopper, and the two sides of the sealing ring are respectively abutted against the valve body and the stopper.

A method for using a urethral dilation catheter for urethral stricture, comprising the following steps:

S1: The patient is lying on the medical bed with the body in the lithotomy position, and the contralateral trouser leg is taken off to expose the perineum;

S2: The doctor wears sterile gloves and lays a hole towel;

S3: Put a rubber sheet or a treatment towel under the patient's buttocks;

S3: Disinfect the vulva, first the penis and the scrotum, then lift the penis, expose the coronal sulcus, and disinfect in sequence from the urethra, glans and coronal sulcus;

S4: Check whether the catheter is unobstructed, and if the catheter needs to be indwelled, check the balloon to ensure that there is no air leakage;

S5: Disinfect the urethral opening, glans and coronal sulcus again;

S7: Use medical wire to penetrate into the drainage tube until it touches the bottom of the inner column groove of the conical block;

S6: Lift the penis and the abdominal wall at 60 degrees, hold the catheter into 160-220mm, insert the right index finger through the rectum for digital examination, touch the positioning block at the tip of the prostate, insert 10-20mm after seeing urine, and keep it fixed;

S7: Use a syringe to inject 15ml of normal saline from the inlet of the valve body, so that the balloon is inflated and the fixed catheter remains in the bladder, so that it is not easy to come out, and the drainage tube is connected to the urine bag to collect urine;

S8: Tighten the catheter, and inject a corresponding amount of normal saline into the balloon corresponding to the narrowed urethra to be expanded;

S9: After 15-30 minutes of expansion, the normal saline of the expanded balloon is drawn out,

S10: Push the genitals back inward by about 10mm, use gauze strips to tie the catheter tightly, and pull out the medical wire;

S10: After the dilation is completed, the catheter is indwelled, and the above-mentioned dilation is performed after 3-7 days, and the urethral mucosa is fully repaired for the stenotic wound for 3-4 weeks;

S11: Use a syringe to press the valve core inward, release the physiological saline in the balloon, and take out the catheter.

Preferably, the amount of physiological saline injected into the first balloon in S8 is 2.7 ml.

Preferably, the amount of physiological saline injected into the second airbag, the third airbag and the fourth airbag in S8 is 4.5 ml.

Preferably, the insertion amount of the catheter in S6 is 200-220 mm for adults.

Compared with the prior art, the present invention provides a urethral dilation catheter for urethral stricture and a method for using the same, which have the following beneficial effects:

1. The urethral dilatation catheter for urethral stenosis and the method of using the same, by making the patient lie on a medical bed with the body in the lithotomy position, and after the doctor has disinfected the patient's perineum, use a medical wire to penetrate into the drainage tube. The drainage tube extends through the inside of the catheter to the conical block, and a sixth through hole is opened through the outer wall of the catheter at the position of the conical block. When the medical wire continues to be inserted until it touches the column groove, the doctor holds the patient's perineum by hand. Insert the catheter at a 60-degree angle, and use the fingers of the other hand to reach the patient’s rectum to touch the positioning block so as to determine the insertion depth of the balloon. When the catheter is inserted into the patient’s bladder, the fluid in the bladder will pass through the sixth through hole. With the drainage tube flowing out of the body, it is convenient for the doctor to confirm that the catheter has been inserted in place, then fix the catheter, use a syringe to inject physiological saline from the valve body, and keep the injection pressure below 2Mpa. When pressure is applied to the valve core, the valve core squeezes the spring inward. , the spring is contracted, the valve body is conducted, and the normal saline will be injected into the balloon through the fifth through hole along the fifth water injection pipe, so that the balloon is bulged and fixed in the patient's bladder. After the water injection is completed, the spring will rebound the valve core, so that the two sides of the sealing ring are pressed against the backflow of the normal saline. Here, the first airbag, the second airbag, the third airbag and the fourth airbag respectively correspond to the patient's perineum from the inside to the outside, and the normal saline is directly injected into the airbag for expansion, which belongs to the lateral expansion, which is different from the traditional one. Longitudinal expansion can effectively avoid the secondary damage caused by the false canal. During the expansion process, the pressure needs to be maintained for about 15 to 30 minutes to fully expand the perineum. After the expansion is completed, use gauze to tie the catheter to pull out the medical wire. , to keep the catheter in the patient's body to facilitate continuous treatment in the later stage. The material of the catheter is made of non-metallic flexible materials, such as natural latex; to prevent the symptoms of infection and bleeding in the patient, the balloon is used to carry out the expansion of the patient. Targeted expansion to avoid unnecessary pain for the patient and improve the patient's medical compliance. After 3 to 4 weeks of treatment, take out the catheter, specifically, press the valve core inward to make the valve body conduct, and the ball The saline in the balloon is drawn out, causing the balloon to deflate, facilitating removal of the catheter.

Description of drawings

Fig. 1 is the structural representation one of a kind of urethral dilation catheter for urethral stricture proposed by the present invention;

2 is a schematic structural diagram two of a urethral dilation catheter for urethral stricture proposed by the present invention;

3 is a schematic structural diagram three of a urethral dilation catheter for urethral stricture proposed by the present invention;

Fig. 4 is a kind of urethral dilation catheter for urethral stricture proposed by the present invention. A schematic structural diagram of part A in Fig. 1;

5 is a schematic structural diagram of part B in FIG. 3 of a urethral dilation catheter for urethral stricture proposed by the present invention;

FIG. 6 is a fourth structural schematic diagram of a urethral dilation catheter for urethral stricture proposed by the present invention.

In the figure: 1, conduit; 101, drainage pipe; 1011, sixth through hole; 1021, first water injection pipe; 1022, second water injection pipe; 1023, third water injection pipe; 1024, fourth water injection pipe; 103, first water injection pipe Five water injection pipes; 1031, fifth through hole; 104, valve body; 1041, valve core; 1042, spring; 1043, stopper; 1044, sealing ring; 105, positioning block; 106, conical block; 1061, column groove 2, balloon; 201, first air bag; 2011, first through hole; 202, second air bag; 2021, second through hole; 203, third air bag; 2031, third through hole; 204, fourth air bag ; 2041, the fourth through hole.

Detailed ways

The technical solutions in 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. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", " The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, so as to The specific orientation configuration and operation are therefore not to be construed as limitations of the present invention.

Example:

1-6, a urethral dilation catheter for urethral stenosis includes a catheter 1, a positioning block 105 is connected to the catheter 1, a cone block 106 is connected to the catheter 1, and a column groove is opened in the cone block 106 1061, the conduit 1 is connected with a drainage pipe 101, a first water injection pipe 1021, a second water injection pipe 1022, a third water injection pipe 1023, a fourth water injection pipe 1024 and a fifth water injection pipe 103, and the fifth water injection pipe 103 is connected with a valve , the outer wall of the catheter 1 is sequentially connected with the balloon 2, the first balloon 201, the second balloon 202, the third balloon 203 and the fourth balloon 204, the first water injection pipe 1021 is connected with the first balloon 201 through the first through hole 2011, The second water injection pipe 1022 is connected to the second air bag 202 through the second through hole 2021 , the third water injection pipe 1023 is connected to the third air bag 203 through the third through hole 2031 , and the fourth water injection pipe 1024 is connected to the fourth air bag through the fourth through hole 2041 204 are connected, the fifth water injection pipe 103 penetrates the outer wall of the catheter 1 to open a fifth through hole 1031, the fifth water injection pipe 103 is connected to the balloon 2 through the fifth through hole 1031, and the drainage pipe 101 penetrates the outer wall of the catheter 1 to open a sixth through hole 1011.

The length of the first airbag 201 is 3 mm or less.

The lengths of the second airbag 202, the third airbag 203 and the fourth airbag 204 are 5 mm or less.

The distance between the balloon 2 and the first balloon 201 is 20 mm.

The diameter of the catheter 1 is 5 mm or less.

The valve includes a valve body 104, a valve core 1041, a spring 1042 and a sealing ring 1044. A stopper 1043 is connected to the valve core 1041 and is integrally formed with the valve core 1041. The valve core 1041 is slidably connected in the valve body 104. The ends of the sealing ring 1044 are respectively abutted against the valve body 104 and the stopper 1043 , and the two sides of the sealing ring 1044 are respectively abutted against the valve body 104 and the stopper 1043 .

A method for using a urethral dilation catheter for urethral stricture, comprising the following steps:

S1: The patient is lying on the medical bed with the body in the lithotomy position, and the contralateral trouser leg is taken off to expose the perineum;

S2: The doctor wears sterile gloves and lays a hole towel;

S3: Put a rubber sheet or a treatment towel under the patient's buttocks;

S3: Disinfect the vulva, first the penis and the scrotum, then lift the penis, expose the coronal sulcus, and disinfect in sequence from the urethra, glans and coronal sulcus;

S4: Check whether the catheter 1 is unobstructed, and if the catheter 1 needs to be indwelled, check the balloon to ensure that there is no air leakage;

S5: Disinfect the urethral opening, glans and coronal sulcus again;

S7: Use a medical wire to penetrate into the drainage tube 101 until it touches the bottom of the inner column groove 1061 of the conical block 106;

S6: Lift the penis and the abdominal wall at 60 degrees, hold the catheter 1 and insert it 160-220mm, insert the right index finger through the rectum for digital examination, touch the positioning block 105 at the tip of the prostate, and insert 10-20mm after seeing urine, keep it fixed ;

S7: use a syringe to inject 15ml of physiological saline from the inlet of the valve body 104, so that the balloon 2 is inflated and the fixed catheter 1 remains in the bladder, so that it is not easy to come out, and the drainage tube 101 is connected to the urine bag to collect urine;

S8: Tighten the catheter 1, and inject a corresponding amount of physiological saline into the balloon corresponding to the narrowed urethra to be expanded;

S9: After 15-30 minutes of expansion, the normal saline of the expanded balloon is drawn out,

S10: Push the genitals back inward by about 10mm, use gauze strips to tie the catheter 1 tightly, and pull out the medical wire;

S10: After the dilation is over, the catheter 1 is indwelled, and the above-mentioned dilatation is performed after 3-7 days for 3-4 weeks until the urethral mucosa fully repairs the stenotic wound;

S11 : Use a syringe to press the valve core 1041 inward, release the physiological saline in the balloon 2 , and take out the catheter 1 .

In S8, the amount of physiological saline injected into the first balloon 201 is 2.7 ml.

In S8, the amount of physiological saline injected into the second air bag 202, the third air bag 203 and the fourth air bag 204 is 4.5 ml.

The insertion amount of the catheter 1 in S6 is 200-220 mm for adults.

Working principle: In the present invention, the patient is placed on the medical bed, and the body is in the lithotomy position. After the doctor disinfects the patient's perineum, the doctor uses a medical wire to penetrate into the drainage tube 101, because the drainage tube 101 extends through the interior of the catheter 1. To the conical block 106, and a sixth through hole 1011 is opened through the outer wall of the catheter 1 at the position of the conical block 106. When the medical wire continues to be inserted until it touches the column groove 1061, the doctor holds the patient's perineum at 60 degrees. Insert the catheter 1 into the patient’s rectum and touch the positioning block 105 with the fingers of the other hand in order to determine the insertion depth of the balloon 2. When the catheter 1 is inserted into the patient’s bladder, the fluid in the bladder will pass through the sixth channel. The hole 1011 flows out of the body along the drainage tube 101, which is convenient for the doctor to confirm that the catheter 1 has been inserted in place, then fix the catheter 1, use a syringe to inject physiological saline from the valve body 104, and the injection pressure is kept below 2Mpa. When applying pressure to the valve core 1041 , the valve core 1041 squeezes the spring 1042 inward, so that the spring 1042 is contracted, the valve body 104 is turned on, and the normal saline will be injected into the balloon 2 through the fifth through hole 1031 along the fifth water injection pipe 103, so that the balloon 2 will bulge It is fixed in the patient's bladder, and the catheter 1 needs to be retained in the patient's body to play a fixing role to assist the patient to urinate. After the water injection is completed, the spring 1042 will rebound the valve core 1041, so that the sealing ring 1044 is pressed against both sides to prevent the backflow of the normal saline. , the doctor injects physiological saline into the corresponding water injection tube for expansion according to the urethral part that the patient needs to expand. From the inside to the outside, directly inject normal saline into the balloon for expansion, which is a horizontal expansion, which is different from the traditional vertical expansion, which can effectively avoid the secondary damage caused by the false channel. During the expansion process, the pressure needs to be maintained for about 15 to 30 After the expansion is completed, use gauze strips to tie the catheter 1 to pull out the medical wire, and keep the catheter 1 in the patient's body to facilitate continuous treatment in the later stage. The material of the catheter 1 is made of non-metallic materials. Flexible materials, such as natural latex; to prevent the symptoms of infection and bleeding in patients, by using balloons to perform targeted expansion of the patient's desired expansion site, to avoid unnecessary pain for the patient, and to improve the patient's medical compliance, after 3 to After 4 weeks of treatment, the catheter 1 was taken out. Specifically, the valve core 1041 was pressed inward to make the valve body 104 conduct, and the physiological saline in the balloon 2 was drawn out, so that the balloon 2 was contracted, and the catheter 1 was easily taken out.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (10)

1. A urethral dilation catheter for urethral stenosis, comprising a catheter (1), characterized in that a positioning block (105) is connected on the catheter (1), and a taper is connected on the catheter (1) Block (106), a column groove (1061) is opened in the tapered block (106), and a drainage pipe (101), a first water injection pipe (1021), a second water injection pipe ( 1022), the third water injection pipe (1023), the fourth water injection pipe (1024) and the fifth water injection pipe (103), the fifth water injection pipe (103) is connected with a valve, and the outer wall of the conduit (1) is connected in sequence There is a balloon (2), a first airbag (201), a second airbag (202), a third airbag (203) and a fourth airbag (204), and the first water injection pipe (1021) passes through the first through hole ( 2011) is connected with the first air bag (201), the second water injection pipe (1022) is connected with the second air bag (202) through the second through hole (2021), and the third water injection pipe (1023) is connected through the third through hole (2021) The hole (2031) is connected to the third air bag (203), the fourth water injection pipe (1024) is connected to the fourth air bag (204) through the fourth through hole (2041), and the fifth water injection pipe (103) passes through the conduit (1) The outer wall is provided with a fifth through hole (1031), the fifth water injection pipe (103) is connected to the balloon (2) through the fifth through hole (1031), and the drainage pipe (101) penetrates the catheter (1) ) outer wall is provided with a sixth through hole (1011). 2 . The urethral dilation catheter for urethral stricture according to claim 1 , wherein the length of the first balloon ( 201 ) is less than 3 mm. 3 . 3. The urethral dilation catheter for urethral stricture according to claim 2, characterized in that the lengths of the second balloon (202), the third balloon (203) and the fourth balloon (204) are 5mm or less. The urethral dilation catheter for urethral stricture according to claim 3, characterized in that, the distance between the balloon (2) and the first balloon (201) is 20 mm. The urethral dilation catheter for urethral stricture according to claim 4, characterized in that the diameter of the catheter (1) is less than 5 mm. 6. The urethral dilation catheter for urethral stricture according to claim 1, wherein the valve comprises a valve body (104), a valve core (1041), a spring (1042) and a sealing ring (1044) ), a stopper (1043) is connected to the valve core (1041) and is integrally formed with the valve core (1041), the valve core (1041) is slidably connected in the valve body (104), the spring The two ends of (1042) are respectively abutted against the valve body (104) and the stopper (1043), and the two sides of the sealing ring (1044) are respectively abutted against the valve body (104) and the stopper (1043). 7. a kind of using method for the urethral dilatation catheter of urethral stricture, adopts the catheter of claim 1, is characterized in that, comprises the following steps: S1: The patient is lying on the medical bed with the body in the lithotomy position, and the contralateral trouser leg is taken off to expose the perineum; S2: The doctor wears sterile gloves and lays a hole towel; S3: Put a rubber sheet or a treatment towel under the patient's buttocks; S3: Disinfect the vulva, first the penis and the scrotum, then lift the penis, expose the coronal sulcus, and disinfect in sequence from the urethra, glans and coronal sulcus; S4: Check whether the catheter (1) is unobstructed, and for the catheter (1) to be indwelled, check the balloon to ensure that there is no air leakage; S5: Disinfect the urethral opening, glans and coronal sulcus again; S7: Use a medical wire to penetrate into the drainage tube (101) until it touches the bottom of the inner column groove (1061) of the conical block (106); S6: Lift the penis and the abdominal wall at 60 degrees, hold the catheter (1) to insert 160-220mm, insert the index finger of the right hand through the rectum for digital examination, touch the positioning block (105) at the tip of the prostate, insert 10-20mm after seeing urine, remain stationary; S7: Use a syringe to inject 15ml of physiological saline from the inlet of the valve body (104), so that the balloon (2) is inflated and the fixed catheter (1) remains in the bladder so that it is not easy to come out, and the drainage tube (101) is connected to the urine bag for collection urine; S8: Tighten the catheter (1), and inject a corresponding amount of physiological saline into the balloon corresponding to the narrowed urethra to be expanded; S9: After 15-30 minutes of expansion, the normal saline of the expanded balloon is drawn out, S10: Push the genitals back inward by about 10mm, use gauze strips to tie the catheter (1) tightly, and pull out the medical wire; S10: After the dilation is completed, the catheter (1) is indwelled, and the above-mentioned dilatation is performed after 3-7 days for 3-4 weeks until the urethral mucosa fully repairs the stenotic wound; S11: Use a syringe to press the valve core (1041) inward, release the physiological saline in the balloon (2), and take out the catheter (1). 8 . The method for using a urethral dilation catheter for urethral stricture according to claim 7 , wherein the amount of physiological saline injected into the first balloon ( 201 ) in the S8 is 2.7 ml. 9 . 9 . The method for using a urethral dilation catheter for urethral stricture according to claim 8 , wherein the second balloon ( 202 ), the third balloon ( 203 ) and the fourth balloon ( 204) The injected physiological saline volume is 4.5ml. 10 . The method for using a urethral dilation catheter for urethral stricture according to claim 7 , wherein the insertion amount of the catheter ( 1 ) in the S6 is 200-220 mm for an adult. 11 .

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