Urethral dilator

Abstract

The urethral dilator comprises a main body structure and an incision knife, an incision knife guide rail groove is formed in the surface of the main body structure; an embedding body is arranged at the bottom of the incision knife; the embedded body is embedded into the incision knife guide rail groove, and the incision knife can be pushed and pulled in the direction of the incision knife guide rail groove. The urethral dilator is combined with an incision knife, operation is easy, safety is high, the application scene is wide, a doctor can conduct dilation operation conveniently, and when necessary, the dilation operation can be conducted at the same time to conduct internal incision on a narrow part; the urethral dilator main body structure can be a disposable instrument and is low in price, the incision knife is simple in structure, convenient to clean and capable of being repeatedly used, and the use cost is further reduced through combination of the incision knife and the urethral dilator; moreover, a medical worker can enter a guide wire through the guide wire cavity, the urethral dilator enters the cavity catheter under the guidance of the guide wire, and a contrast agent and a lubricant can be injected into the guide wire cavity, so that the success rate of dilation operation is effectively improved; and the stretching length and the length of an incision part can be conveniently identified, so that urethral dilatation and incision operations can be accurately performed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, in particular to a urethral dilator. BACKGROUND

[0002] Urethral stricture is a common disease in urological diseases. After cystoscopy or various lithotomy operations, postoperative urethral cicatricial stricture is prone to occur.

[0003] Currently, urologists use metal urethral dilators to gradually dilate the urethra from small to large. For cicatricial stricture, doctors use reusable urethrotomy knives with dilators to cut the narrow part. The metal urethral dilator is used by the doctor's surgical experience to determine the dilatation operation, which is prone to restenosis and urethral false passage. It is not easy to perform surgery in smaller hospitals.

[0004] Currently, there are also disposable urethral dilators with guide wires for doctors to choose. The advantage of the guide wire is that it is not easy to form a urethral false passage. Since there are many models in a set, the cost of the patient is increased, and it is difficult to dilate in cases of cicatricial stricture. CONTENT OF THE INVENTION

[0005] The purpose of the present application is to provide a urethral dilator to solve the technical problems described in the background art.

[0006] A urethral dilator, comprising: a main body structure, a cutting knife; the surface of the main body structure is provided with a cutting knife guide rail groove, and the bottom of the cutting knife is provided with an embedding body; the embedding body is embedded in the cutting knife guide rail groove, and the cutting knife can be pushed and pulled along the direction of the cutting knife guide rail groove.

[0007] The embedding body of the cutting knife is an inverted T-shaped structure.

[0008] Further, the main body structure comprises a handle portion, and the cutting knife guide rail groove is arranged on the surface of the handle portion; a dilator rod portion is arranged at the top end of the handle portion; a knife body bearing portion is arranged at the front end of the cutting knife; a knife body guide rail is arranged on the surface of the dilator rod portion corresponding to the position of the cutting knife guide rail groove, and the knife body bearing portion is mounted on the knife body guide rail.

[0009] Further, a knife head is arranged at the front end of the knife body bearing portion.

[0010] Further, a guide wire cavity is arranged through the handle portion and the dilator rod portion of the main body structure.

[0011] Further, a front end probe is arranged at the front end of the dilator rod portion, and a guide wire port is arranged at the top end of the front end probe.

[0012] Further, an installation portion is fixedly arranged at the rear end of the handle portion, a protruding portion is arranged at the rear end of the installation portion, and the protruding portion is used for connecting and fixing an external pipeline.

[0013] Further, a scale is arranged on the expander rod.

[0014] Further, a sliding push button is arranged at the top end of the incision knife.

[0015] Further, a scale is arranged at the position corresponding to the sliding push button on the incision knife guide groove.

[0016] Compared with the prior art, the advantages and positive effects of the present application are that: the urethral dilator combines the incision knife, is simple to operate, has high safety, has wide application scenarios, is convenient for doctors to perform dilatation surgery, can be performed simultaneously when necessary, and can perform internal incision on the narrow part; the urethral dilator main body structure can be set as a disposable instrument, is cheap, the incision knife structure is simple and convenient to clean, can be reused, and the combination of the two further reduces the use cost; and the medical staff can pass the guide wire into the guide wire cavity, the urethral dilator enters the cavity catheter under the guidance of the guide wire, and the guide wire cavity can also be injected with contrast agent and lubricant, which will effectively improve the success rate of the dilatation surgery and improve the operation quality; through the arrangement of the scale, the depth of the disposable urethral dilator inserted into the urethra and the length of the incision knife incision operation part can be identified, so that the urethral dilatation and incision operation can be accurately performed. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0018] Figure 1 It is an embodiment structure schematic view of a urethral dilator.

[0019] Figure 2 It is an embodiment main body structure and incision knife structure schematic view of a urethral dilator.

[0020] Figure 3 It is a back view of an embodiment main body structure of a urethral dilator.

[0021] Figure 4 It is a bottom view of an embodiment main body structure of a urethral dilator.

[0022] Figure 5 It is a side view of an embodiment main body structure of a urethral dilator. DETAILED DESCRIPTION

[0023] In the utility model, unless another definite provision and limitation, the terms "mount", "connect", "joint", "fix" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connect, can be mechanical connection, also can be electrical connection, can be direct connection, also can indirectly connect through the intermediate medium, can be the communication inside two elements. For ordinary skilled person in the art, the above terms can be understood according to the specific circumstances the specific meaning of the utility model. The terms "first", "second" are only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features.

[0024] In the utility model, unless another definite provision and limitation, the terms "mount", "connect", "joint", "fix" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connect, can be mechanical connection, also can be electrical connection, can be direct connection, also can indirectly connect through the intermediate medium, can be the communication inside two elements. For ordinary skilled person in the art, the above terms can be understood according to the specific circumstances the specific meaning of the utility model. The terms "first", "second" are only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features.

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely in the description of the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0026] As shown in the description accompanying drawings Figures 1-5 As shown in the description accompanying drawings

[0027] A urethral dilator, including: main body structure 100, incision knife 200, main body structure 100 surface is provided with incision knife guide rail groove 122, incision knife 200 bottom is provided with embedding body 202, embedding body 202 is embedded in incision knife guide rail groove 122, and incision knife 200 can be pushed and pulled along the direction of incision knife guide rail groove 122 to cut off the narrow part of patient's urethra.

[0028] In this embodiment, the urethral dilator is combined with an incision knife, which is simple to operate, highly safe, and has a wide range of applications. It facilitates doctors to perform dilation surgery and incise the narrowed area. The main structure of the urethral dilator can be set as a disposable instrument, which is inexpensive. The incision knife has a simple structure, is easy to clean, and can be reused. The combination of the two further reduces the cost of use.

[0029] Specifically, depending on cost constraints or usage requirements, the main structure of the urethral dilator can be configured as a reusable structure or a disposable instrument, and the cutting knife structure can be configured as a reusable structure or a disposable instrument.

[0030] Specifically, the insert 202 of the cutting blade 200 has an inverted T-shaped structure. The protruding part at the bottom of the inverted T-shaped structure is embedded in the cutting blade guide groove 122, which improves the stability and smoothness of the fit between the insert 202 and the cutting blade guide groove 122.

[0031] Specifically, the main structure 100 includes a handle portion 120, with a cutting blade guide groove 122 disposed on the surface of the handle portion 120; an expander rod portion 110 is disposed at the top of the handle portion 120; a blade body support portion 210 is disposed at the front end of the cutting blade 200, and a blade body guide rail 116 is disposed at a position corresponding to the cutting blade guide groove 122 on the surface of the expander rod portion 110, with the blade body support portion 210 mounted on the blade body guide rail 116. The blade body guide rail 116 cooperates with the blade body support portion 210, and when the cutting blade is pushed or pulled, the blade body support portion 210 slides within the blade body guide rail 116.

[0032] Specifically, the front end of the blade support 210 is provided with a blade head 212. The back-and-forth movement of the blade support 210 will drive the blade head 212 to slide out / in from the blade guide rail 116, thereby cutting open the urethral stricture of the patient.

[0033] The handle 120 and dilator rod 110 of the main structure 100 are provided with a guide wire cavity 126. Medical staff can insert the guide wire through the guide wire cavity 126, and the urethral dilator enters the urethral catheter under the guidance of the guide wire. At the same time, contrast agent and lubricant can also be injected into the guide wire cavity 126, which will effectively improve the success rate of dilation surgery and improve the quality of surgery.

[0034] Specifically, the front end of the dilator rod 110 is provided with a front probe 112, and the top of the front probe 112 is provided with a guide wire port 114. The front probe 112 is curved relative to the dilator rod 110, which conforms to the urethral structure design and facilitates the insertion and maintenance of the urethral dilator in the accurate position.

[0035] Specifically, a mounting part 125 is fixedly provided at the rear end of the handle part 120, and a protrusion 128 is provided at the rear end of the mounting part 125 for connecting and fixing an external pipe.

[0036] Specifically, the dilator rod 110 is equipped with graduations to help medical staff identify the depth of insertion of the disposable urethral dilator into the urethra, thereby accurately performing urethral dilation and incision surgeries.

[0037] Specifically, the cutting blade 200 has a sliding push button 205 at its top.

[0038] Specifically, the position of the sliding push button 205 next to the incision knife guide groove 122 is marked with scales to help medical staff identify the length of the surgical site cut by the incision knife.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the technical solutions of this utility model have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this utility model.

Claims

1. A urethral dilator, characterized in that, include: The main structure (100) and the cutting blade (200) are provided with a cutting blade guide groove (122) on the surface of the main structure (100) and an insert (202) at the bottom of the cutting blade (200). The insert (202) is embedded in the cutting blade guide groove (122), and the cutting blade (200) can be pushed and pulled along the direction of the cutting blade guide groove (122). The insert (202) of the cutting blade (200) is an inverted T-shaped structure. The main structure (100) includes a handle (120). A cutting blade guide groove (122) is provided on the surface of the handle part (120); an expander rod part (110) is provided at the top of the handle part (120); a blade body support part (210) is provided at the front end of the cutting blade (200); a blade body guide rail (116) is provided at the position corresponding to the cutting blade guide groove (122) on the surface of the expander rod part (110); the blade body support part (210) is installed on the blade body guide rail (116); a blade head (212) is provided at the front end of the blade body support part (210).

2. The urethral dilator according to claim 1, characterized in that, The handle (120) and expander rod (110) of the main structure (100) are provided with a guide wire cavity (126).

3. The urethral dilator according to claim 2, characterized in that, The front end of the expander rod (110) is provided with a front probe (112), and the top end of the front probe (112) is provided with a guide wire port (114).

4. The urethral dilator according to claim 3, characterized in that, The handle part (120) has a mounting part (125) fixedly provided at the rear end, and the mounting part (125) has a protrusion (128) at the rear end for connecting and fixing external pipes.

5. The urethral dilator according to claim 4, characterized in that, The expander rod (110) is provided with a scale.

6. The urethral dilator according to claim 5, characterized in that, The cutting blade (200) has a sliding push button (205) at its top.

7. The urethral dilator according to claim 6, characterized in that, The cutting blade guide groove (122) has a scale corresponding to the position of the sliding push button (205) for pushing and pulling.

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