Dilator for urethra

Abstract

The dilator for the urethra comprises a dilation tube body, a filiform probe is arranged in the dilation tube body and used for guiding the dilation tube body, a handle is arranged on the surface of the dilation tube body in a sleeved mode, an annular air bag is installed in the dilation tube body, the surface of the annular air bag is communicated with a connecting tube, and the connecting tube is communicated with the handle. The connecting pipe is located in the handle, the top of the connecting pipe is communicated with an expansion valve, and a manual rubber inflation ball is movably installed on the top of the expansion valve. The urethra dilator has the advantage of being good in comfort, and the problems that in the using process of an existing urethra dilator, the hardness of the dilator in the using process is inconvenient to change, the using requirements of different patients are difficult to meet, the urethra of the patient is prone to being damaged due to the fact that the pressure borne by the urethra of the patient is too large, and the comfort of the dilator is reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a urethra dilator. Background Art

[0002] Urethral dilators are a type of medical device used to treat urethral stenosis, obstruction or urethral surgery, and are mainly used in the field of urology. Their main function is to gradually increase the inner diameter of the urethra by physical means to improve the problem of obstructed urine discharge, and help prevent and treat complications caused by urethral stenosis, such as difficulty urinating and possible renal damage. Urethral dilators are made of two materials: elastic and metal. However, it is difficult to change the hardness of elastic materials, and the degree, location and tissue sensitivity of urethral stenosis are different for each patient. Dilators with fixed hardness may exert excessive pressure on the urethral tissue of some patients, causing unnecessary pain or even damage, such as urethral wall tears or perforations.

[0003] A urethral dilator for urology surgery with a Chinese patent authorization announcement number of CN 219127943 U uses a push head to move inward to drive a push plate to inflate the air bag, and the air bag then transfers the air to the air cushion to achieve the effect of dilating the urethra. Because it is an air cushion, not a traditional stainless steel material, it will not damage the patient's urethra, and is safer and more efficient. However, existing urethral dilators have multiple models. Medical staff will first use a smaller dilator for dilation, and then gradually replace it with a larger dilator. Using an air bag for dilation can easily cause over-dilation and cause damage.

[0004] During use, it is not convenient to change the hardness of the existing urethral dilator, which makes it difficult to meet the use requirements of different patients. It is easy to cause excessive pressure on the patient's urethra and cause damage, which reduces the comfort of the dilator. Utility Model Content

[0005] The purpose of the utility model is to provide a urethral dilator with the advantage of good comfort, which solves the problem that the existing urethral dilator is inconvenient to change the hardness of the dilator during use, is difficult to meet the use requirements of different patients, easily causes excessive pressure on the patient's urethra and causes damage, and reduces the comfort of the dilator.

[0006] To achieve the above object, the utility model provides the following technical solution: a urethral dilator, comprising a dilating tube body, a filamentous probe is arranged inside the dilating tube body, the filamentous probe is used to guide the dilating tube body, and a handle is sleeved on the surface of the dilating tube body.

[0007] An annular airbag is installed inside the expansion tube body, the surface of the annular airbag is connected to a connecting pipe, the connecting pipe is located inside the handle, the top of the connecting pipe is connected to an expansion valve, and a manual rubber inflation ball is movably installed on the top of the expansion valve;

[0008] The expansion tube body comprises a flexible inner tube, the surface of which is fixedly connected with an elastic outer tube, a catheterization channel for urinary catheterization is provided inside the flexible inner tube, and an installation interlayer for installing an annular airbag is provided on the opposite side of the flexible inner tube and the elastic outer tube.

[0009] As a preferred urethral dilator of the utility model, the material of the filamentous probe is polyvinyl chloride.

[0010] As a preferred urethral dilator of the utility model, a through hole is opened on the surface of the dilation tube body, and the through hole is communicated with the urinary catheter channel.

[0011] As a preferred urethral dilator of the utility model, the diameter of the right end of the dilation tube body is smaller than that of the left end.

[0012] As a preferred urethral dilator of the utility model, a sealing ring is provided at the connection between the dilation valve and the manual rubber inflatable ball.

[0013] As a preferred urethral dilator of the utility model, the surface of the elastic outer tube is provided with an antibacterial coating, and the antibacterial coating is a silver ion coating.

[0014] As a preferred urethral dilator of the utility model, the material of the flexible inner tube is medical elastic polyurethane, and the material of the elastic outer tube is medical silicone.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The utility model installs a manual rubber inflatable ball on the expansion valve. After the expansion valve is opened, air can be inflated into the inside of the annular airbag to expand the annular airbag, thereby changing the hardness of the annular airbag. After the hardness of the annular airbag changes, the elastic outer tube is squeezed to change the hardness of the elastic outer tube synchronously, thereby changing the hardness of the expansion tube body as a whole. The flexible inner tube supports the inner side of the annular airbag so that it can only expand outward.

[0017] Each patient's urethral condition, degree of stricture, and tolerance to pain may be different. By adjusting the hardness, the doctor can choose the appropriate hardness level according to the patient's specific situation, so that the dilation process can effectively dilate the urethra while minimizing discomfort and damage;

[0018] A dilator that is too hard may cause unnecessary pressure and damage to the urethral tissue, especially to some sensitive or already fragile urethral walls. The design with adjustable hardness allows the doctor to control the force more finely during the operation to prevent urethral perforation or other complications caused by excessive force.

[0019] 2. The utility model can facilitate the expansion of the patient's urethra through the coordinated use of the expansion tube body, the filamentary probe and the annular airbag. The filamentary probe is inserted into the urethra in advance, and then the expansion tube body is sleeved on the surface of the filamentary probe. The filamentary probe guides the expansion tube body to smoothly enter the urethra. The medical staff inserts the expansion tube body into the urethra by holding the handle. The diameters of the two ends of the expansion tube body are different. The narrower part at the right end enters the urethra first, and can transition more smoothly when passing through the narrow section, thereby reducing the patient's pain. When entering the wider part, the annular airbag changes the hardness of the expansion tube body, thereby increasing the patient's comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the main axonometric drawing of the utility model;

[0021] Figure 2 It is the left axonometric drawing of the utility model;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the expansion tube body of the utility model;

[0023] Figure 4 It is a partial schematic diagram of the main cross-sectional view of the utility model;

[0024] Figure 5 It is a partial schematic diagram of a top view and a cross-section of the utility model.

[0025] In the figure: 1. expansion tube body; 101. flexible inner tube; 102. elastic outer tube; 103. antibacterial coating; 104. mounting interlayer; 105. urinary catheterization channel; 2. through hole; 3. connecting tube; 4. filamentary probe; 5. handle; 6. expansion valve; 7. manual rubber inflatable ball; 8. annular airbag. DETAILED DESCRIPTION

[0026] See also Figure 1-Figure 5 A urethral dilator comprises a dilating tube body 1, a filamentous probe 4 is arranged inside the dilating tube body 1, the filamentous probe 4 is used to guide the dilating tube body 1, and a handle 5 is sleeved on the surface of the dilating tube body 1.

[0027] Preferably, the material of the filamentary probe 4 is polyvinyl chloride.

[0028] Furthermore, the diameter of the right end of the expansion tube body 1 is smaller than that of the left end.

[0029] By using the expansion tube body 1, the filamentary probe 4 and the annular airbag 8 in coordination, the patient's urethra can be expanded conveniently. The filamentary probe 4 is inserted into the urethra in advance, and then the expansion tube body 1 is sleeved on the surface of the filamentary probe 4. The filamentary probe 4 guides the expansion tube body 1 so that it can smoothly enter the urethra. The medical staff inserts the expansion tube body 1 into the urethra by holding the handle 5. The diameters of the two ends of the expansion tube body 1 are different. The narrower part at the right end enters the urethra first, and can transition more smoothly when passing through the narrow section, thereby reducing the patient's pain. When entering the wider part, the annular airbag 8 changes the hardness of the expansion tube body 1, thereby increasing the patient's comfort.

[0030] Furthermore, an annular airbag 8 is installed inside the expansion tube body 1, and the surface of the annular airbag 8 is connected to a connecting tube 3, which is located inside the handle 5. The top of the connecting tube 3 is connected to an expansion valve 6, and a manual rubber inflation ball 7 is movably installed on the top of the expansion valve 6.

[0031] Furthermore, a sealing ring is provided at the connection between the expansion valve 6 and the manual rubber inflatable ball 7 .

[0032] By installing the manual rubber inflatable ball 7 on the expansion valve 6, after opening the expansion valve 6, air can be inflated into the interior of the annular airbag 8 to make the annular airbag 8 expand and change the hardness of the annular airbag 8. After the hardness of the annular airbag 8 changes, the elastic outer tube 102 is squeezed and the hardness of the elastic outer tube 102 is changed synchronously, thereby changing the overall hardness of the expansion tube body 1. The flexible inner tube 101 supports the inner side of the annular airbag 8 so that it can only expand outward.

[0033] Each patient's urethral condition, degree of stenosis, and tolerance to pain may be different. By adjusting the hardness, the doctor can choose the appropriate hardness level based on the patient's specific situation, so that the dilation process can effectively dilate the urethra while minimizing discomfort and damage.

[0034] A dilator that is too hard may cause unnecessary pressure and damage to the urethral tissue, especially to some sensitive or already fragile urethral walls. The design with adjustable hardness allows the doctor to control the force more finely during the operation to prevent urethral perforation or other complications caused by excessive force.

[0035] When inflating the annular airbag 8, the manual rubber inflatable ball 7 is inserted into the top of the expansion valve 6, and the sealing ring between the manual rubber inflatable ball 7 and the expansion valve 6 seals the connection. After the installation is completed, the expansion valve 6 is opened, and the medical staff presses the manual rubber inflatable ball 7 to allow the air inside the manual rubber inflatable ball 7 to enter the annular airbag 8 through the expansion valve 6 and the connecting pipe 3 to increase the gas content inside the annular airbag 8. As the gas inside the annular airbag 8 increases, the pressure rises synchronously, which increases the surface hardness of the annular airbag 8. When deflation is required, the manual rubber inflatable ball 7 is unplugged, and the expansion valve 6 is opened to discharge the gas inside the annular airbag 8 to reduce the hardness of the annular airbag 8.

[0036] Furthermore, the expansion tube body 1 includes a flexible inner tube 101, the surface of which is fixedly connected to an elastic outer tube 102, a catheterization channel 105 for catheterization is provided inside the flexible inner tube 101, and an installation interlayer 104 for installing the annular airbag 8 is provided on the opposite side of the flexible inner tube 101 and the elastic outer tube 102.

[0037] Furthermore, a through hole 2 is formed on the surface of the expansion tube body 1 , and the through hole 2 is connected to the urinary catheterization channel 105 .

[0038] When the expansion tube body 1 enters the urethra as a whole to expand the urethra, urine is discharged through the catheter channel 105 to avoid obstruction of urine discharge. When urine passes through the catheter channel 105, it flows to the surface of the expansion tube body 1 through the through hole 2 connected thereto, reducing the friction on the surface of the expansion tube body 1.

[0039] Preferably, the surface of the elastic outer tube 102 is provided with an antibacterial coating 103, and the antibacterial coating 103 is a silver ion coating.

[0040] Furthermore, the material of the flexible inner tube 101 is medical elastic polyurethane, and the material of the elastic outer tube 102 is medical silicone.

[0041] The flexible inner tube 101 supports the inside of the expansion tube body 1 to prevent the expansion tube body 1 from being excessively deformed and difficult to advance during the insertion into the urethra. The antibacterial coating 103 is coated on the surface of the elastic outer tube 102 to increase the antibacterial effect of the surface of the elastic outer tube 102 and improve the safety during the urethral expansion process. The elastic outer tube 102 is elastic and can be deformed and expanded, so that the annular airbag 8 can change the overall hardness of the expansion tube body 1.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A urethral dilator, comprising a dilating tube body (1), wherein a filamentous probe (4) is arranged inside the dilating tube body (1), wherein the filamentous probe (4) is used to guide the dilating tube body (1), and a handle (5) is sleeved on the surface of the dilating tube body (1), characterized in that: An annular airbag (8) is installed inside the expansion tube body (1); the surface of the annular airbag (8) is connected to a connecting pipe (3); the connecting pipe (3) is located inside the handle (5); the top of the connecting pipe (3) is connected to an expansion valve (6); a manual rubber inflation ball (7) is movably installed on the top of the expansion valve (6); The expansion tube body (1) comprises a flexible inner tube (101), the surface of which is fixedly connected to an elastic outer tube (102), a catheterization channel (105) for urinary catheterization is provided inside the flexible inner tube (101), and a mounting interlayer (104) for mounting an annular airbag (8) is provided on one side opposite to the flexible inner tube (101) and the elastic outer tube (102).

2. A urethral dilator according to claim 1, characterized in that: The material of the filamentous probe (4) is polyvinyl chloride.

3. A urethral dilator according to claim 1, characterized in that: A through hole (2) is provided on the surface of the dilation tube body (1), and the through hole (2) is connected to the urinary catheterization channel (105).

4. A urethral dilator according to claim 1, characterized in that: The diameter of the right end of the expansion tube body (1) is smaller than that of the left end.

5. A urethral dilator according to claim 1, characterized in that: A sealing ring is provided at the connection between the expansion valve (6) and the manual rubber inflatable ball (7).

6. A urethral dilator according to claim 1, characterized in that: The surface of the elastic outer tube (102) is provided with an antibacterial coating (103), and the antibacterial coating (103) is a silver ion coating.

7. A urethral dilator according to claim 1, characterized in that: The material of the flexible inner tube (101) is medical elastic polyurethane, and the material of the elastic outer tube (102) is medical silicone.

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