A progressive urethral meatotome

Abstract

This utility model discloses a progressive urethral orifice dilator, comprising a primary dilator section and a secondary dilator section, with a matching dilator transition section between the primary and secondary dilators. A guide head is located at the end of the primary dilator section furthest from the dilator transition section. A silicone sleeve is fitted over the guide head and the primary dilator section. A second inner cavity is located within the primary dilator section, and a first inner cavity is located within the secondary dilator section. An opening is located within the dilator transition section. Ventilation holes are formed on the surface of the primary dilator section. A handle is located at one end of the secondary dilator section, through which a threaded rod passes. A movable sleeve is fitted at one end of the threaded rod, and a rotary knob is located at the other end. A piston block is located on the surface of one end of the movable sleeve. By moving the piston block, the pressure within the second inner cavity can be increased, thereby increasing the diameter of the silicone sleeve through multiple ventilation holes, ensuring that the diameters of the primary and secondary dilators are equal, thus preventing inconsistent urethral diameters during dilation.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a progressive urethral meatus dilator. Background Technology

[0002] The Department of Urology is a hospital department that primarily diagnoses and treats diseases of the "surgical" aspect of the urinary system. It mainly treats various urological diseases, and urethral dilators are frequently used in urological surgeries to treat urethral strictures. Urethral stricture is a common urological condition, and its causes are generally classified into three categories: traumatic factors, inflammatory factors, and congenital factors. The lesion mainly manifests as scars of varying depths and densities, accompanied by defects in the urothelium and contracture of the urethral wall, ultimately affecting normal urination. The simplest and most commonly used method for treating urethral stricture is urethral dilation.

[0003] Currently, progressive urethral meatus dilators typically consist of dilators of different diameters. These dilators help dilate the urethral meatus by gradually increasing their diameter. The purpose of this design is to reduce patient pain and discomfort because the dilation process can be gentler and more controllable. However, this can also lead to inconsistent urethral diameters at the end of the dilation process. Therefore, we have designed a progressive urethral meatus dilator. Utility Model Content

[0004] The purpose of this invention is to provide a progressive urethral meatus dilator to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A progressive urethral meatus dilator includes a primary dilator section and a secondary dilator section, with a matching dilator transition section between the two sections. A guide head is located at the end of the primary dilator section furthest from the dilator transition section. A silicone sleeve is fitted over the guide head and the primary dilator section. The primary dilator section has a second inner cavity, the secondary dilator section has a first inner cavity, and the dilator transition section has an opening. Multiple vent holes are formed on the outer surface of the primary dilator section, communicating with the second inner cavity. The secondary dilator section is furthest from the dilator transition section. One end of the device is provided with a handle, and a threaded rod is provided through the handle along its central axis. One end of the threaded rod extends into the first inner cavity and is fitted with a movable sleeve. The other end of the threaded rod is provided with a rotary knob, which is rotatably mounted on the end face of the handle. The movable sleeve has an internal thread that matches the threaded rod. A piston block is provided on the surface of the movable sleeve away from the rotary knob. The piston block is slidably mounted in the first inner cavity. Two limiting sliders are symmetrically provided on the outer surface of the movable sleeve. A limiting groove is provided on the side wall of the first inner cavity for the limiting sliders to slide into.

[0007] As a preferred embodiment of this utility model: the opening end of the silicone sleeve is provided with a fixing ring, and an annular mounting groove for the fixing ring to be inserted is opened on the outer surface of the first-stage expansion section, and the fixing ring and the annular mounting groove are glued together.

[0008] As a further preferred embodiment of this utility model: both the primary expansion section and the secondary expansion section are hollow tubular structures.

[0009] As a further preferred embodiment of this utility model, the diameter of the primary expansion section is smaller than the diameter of the secondary expansion section.

[0010] As a further preferred embodiment of this utility model: the outer circumferential surface of the rotary knob is provided with anti-slip texture.

[0011] As a further preferred embodiment of this utility model: the first inner cavity is connected to the second inner cavity through a port.

[0012] As a further preferred embodiment of this utility model, the guide head has a hemispherical structure.

[0013] The beneficial effects of this invention are as follows: When using this device, it is gradually inserted into the urethral opening from the guide head. The hemispherical guide head facilitates smooth and gentle insertion. It then expands through the primary dilation section, followed by a gradual transition to the secondary dilation section. The transition section gradually thickens along the direction from the primary to the secondary dilation section, gradually increasing the diameter to help dilate the urethral opening, reducing patient pain and discomfort. The dilation process is gentler and more controllable. Finally, the doctor rotates the threaded rod by turning the rotary knob. Under the circumferential limiting action of the threaded connection and the limiting slider, the moving sleeve moves the piston block to the left, allowing gas from the first inner cavity to be released into the second inner cavity, increasing the pressure within the second inner cavity. This, in turn, increases the diameter of the silicone sleeve through multiple vents, further dilating the corresponding urethra. This increases the outer diameter of the primary dilation section, ensuring that the diameters of the primary and secondary dilation sections are equal, preventing discrepancies in the final dilated urethral diameter. Furthermore, the device is simple and convenient to operate and highly practical. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 This is a main sectional view of the overall structure of this utility model;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0019] The components are: 1. Secondary expansion section; 2. Handle; 3. Anti-slip texture; 4. Primary expansion section; 5. Expansion transition section; 6. Guide head; 7. Silicone sleeve; 8. Rotary knob; 9. Threaded rod; 10. Moving sleeve; 11. First inner cavity; 12. Second inner cavity; 13. Piston block; 14. Fixing ring; 15. Limiting groove; 16. Vent hole; 17. Annular mounting groove; 18. Through port; 19. Limiting slider. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Please see Figure 1-4In this embodiment of the present invention, a progressive urethral meatus dilator includes a primary dilator section 4 and a secondary dilator section 1. Both the primary dilator section 4 and the secondary dilator section 1 are hollow tubular structures. The diameter of the primary dilator section 4 is smaller than the diameter of the secondary dilator section 1. A matching dilator transition section 5 is provided between the primary dilator section 4 and the secondary dilator section 1. A guide head 6 is provided at the end of the primary dilator section 4 away from the dilator transition section 5. The guide head 6 is a hemispherical structure. A silicone sleeve 7 is fitted over the outer side of the guide head 6 and the outer side of the primary dilator section 4. The primary dilator section 4 has a second inner cavity 12 inside, and the secondary dilator section 1 has a first inner cavity 11 inside. The dilator transition section 5 has a through-hole 18 inside. The first inner cavity 11 is connected to the second inner cavity 12 through the through-hole 18. Multiple openings are provided on the outer surface of the primary dilator section 4. The vent 16 is connected to the second inner cavity 12. The end of the secondary expansion section 1 away from the expansion transition section 5 is provided with a handle 2. A threaded rod 9 is provided through the handle 2 along its central axis. One end of the threaded rod 9 extends into the first inner cavity 11 and is fitted with a movable sleeve 10. The other end of the threaded rod 9 is provided with a rotating knob 8. The rotating knob 8 is rotatably set on the end face of the handle 2. The outer circumferential surface of the rotating knob 8 is provided with anti-slip texture 3. The inside of the movable sleeve 10 is provided with an internal thread that matches the threaded rod 9. The surface of the movable sleeve 10 away from the rotating knob 8 is provided with a piston block 13. The piston block 13 is slidably set in the first inner cavity 11. Two limiting sliders 19 are symmetrically arranged on the outer surface of the movable sleeve 10. The side wall of the first inner cavity 11 is provided with a limiting groove 15 for the limiting sliders 19 to slide into.

[0024] The silicone sleeve 7 has a retaining ring 14 at its open end, and an annular mounting groove 17 for the retaining ring 14 to be inserted is opened on the outer surface of the first-stage expansion section 4. The retaining ring 14 and the annular mounting groove 17 are glued together.

[0025] Specifically, when using this device, it is gradually inserted into the urethral opening from the guide head 6. The hemispherical guide head 6 facilitates smooth and gentle insertion. It then undergoes dilation through the primary dilation section 4, followed by a gradual transition from the dilation transition section 5 to the secondary dilation section 1. The dilation transition section 5 gradually thickens along the direction from the primary dilation section 4 to the secondary dilation section 1. By gradually increasing the diameter, it helps dilate the urethral opening, reducing patient pain and discomfort, as the dilation process can be more gentle and controllable. Finally, the doctor rotates the threaded rod 9 by turning the rotary knob 8, thus dilating the threaded connection... Under the circumferential limiting action of the connecting and limiting slider 19, the moving sleeve 10 can be driven to move the piston block 13 to the left, thereby venting the gas in the first inner cavity 11 into the second inner cavity 12, which increases the pressure in the second inner cavity 12. This, in turn, increases the diameter of the silicone sleeve 7 through multiple vent holes 16, further expanding the corresponding urethra. This increases the outer diameter of the first-stage expansion section 4, making the diameter of the first-stage expansion section 4 equal to the diameter of the second-stage expansion section 1, thus avoiding the situation where the final expanded urethral diameter is different. Moreover, the operation is simple and convenient, and the device is highly practical.

[0026] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A progressive urethral meatus dilator, comprising a primary dilator (4) and a secondary dilator (1); characterized in that: An expansion transition section (5) is provided between the primary expansion section (4) and the secondary expansion section (1). A guide head (6) is provided at the end of the primary expansion section (4) away from the expansion transition section (5). A silicone sleeve (7) is fitted on the outside of the guide head (6) and the outside of the primary expansion section (4). A second inner cavity (12) is provided inside the primary expansion section (4). A first inner cavity (11) is provided inside the secondary expansion section (1). An opening (18) is provided inside the expansion transition section (5). Multiple vent holes (16) are opened on the outer surface of the primary expansion section (4). The vent holes (16) are connected to the second inner cavity (12). A handle part (2) is provided at the end of the secondary expansion section (1) away from the expansion transition section (5). A threaded rod (9) is provided along its central axis along its length. One end of the threaded rod (9) extends into the first inner cavity (11) and is fitted with a movable sleeve (10). The other end of the threaded rod (9) is provided with a rotating knob (8). The rotating knob (8) is rotatably set on the end face of the handle part (2). The interior of the movable sleeve (10) is provided with an internal thread that matches the threaded rod (9). A piston block (13) is provided on the surface of the movable sleeve (10) away from the rotating knob (8). The piston block (13) is slidably set in the first inner cavity (11). Two limiting sliders (19) are symmetrically provided on the outer surface of the movable sleeve (10). The side wall of the first inner cavity (11) is provided with a limiting groove (15) for the limiting sliders (19) to slide into.

2. The progressive urethral meatus dilator according to claim 1, characterized in that: The silicone sleeve (7) has a fixing ring (14) at its open end, and an annular mounting groove (17) for the fixing ring (14) to be inserted is opened on the outer surface of the first expansion section (4). The fixing ring (14) and the annular mounting groove (17) are glued together.

3. The progressive urethral meatus dilator according to claim 1, characterized in that: Both the primary expansion section (4) and the secondary expansion section (1) are hollow tubular structures.

4. A progressive urethral meatus dilator according to claim 3, characterized in that: The diameter of the first-stage expansion segment (4) is smaller than the diameter of the second-stage expansion segment (1).

5. A progressive urethral meatus dilator according to claim 4, characterized in that: The outer circumferential surface of the rotary knob (8) is provided with anti-slip texture (3).

6. A progressive urethral meatus dilator according to claim 5, characterized in that: The first inner cavity (11) is connected to the second inner cavity (12) through the port (18).

7. A progressive urethral meatus dilator according to claim 1, characterized in that: The guide head (6) has a hemispherical structure.

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