Urethral stone grabbing equipment

Abstract

The invention relates to the technical field of urethral calculus grabbing, and discloses urethral calculus grabbing equipment which comprises a urethroscope grip and a urethroscope sheath, an air inlet is formed in the edge of one side of the inner wall of the urethroscope sheath, and the outer wall of a urethral hose is connected with the inner wall of the urethroscope grip and the inner wall of the urethroscope sheath in a penetrating and inserting mode. According to the urethral calculus removing device, the calculus removing mechanism and the expansion assembly are arranged, a small air pump is started through an air pump switch, an annular air bag is expanded, then the area, where calculus broken stones are distributed, in the urethra of a patient is supported, the inner diameter of the area is increased, and the calculus removing device is used for removing the calculus in the urethra of the patient; the guide wire is pulled, so that the stone sleeve basket wraps the broken stone to enter the urethroscope sheath, the inner wall of the urethra in the area is expanded by the annular air bag, when the stone sleeve basket drags the broken stone to move, friction of the inner wall of the urethra is reduced, meanwhile, the stone sleeve basket wraps the broken stone in a spoon arc shape and is pulled out, the stone grabbing efficiency is further improved, and friction of the inner wall of the urethra is reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of urinary tract stone removal, and specifically relates to a device for removing urinary tract stones. Background Technology

[0002] The treatment of urethral stones generally requires surgery performed in the operating room under spinal or general anesthesia. The stones are pushed back into the bladder and fragmented using a lithotripsy device. After fragmentation, a stone retrieval device is used to remove the broken stones. Urethral stones can be located in the bulbous urethra, membranous urethra, prostatic urethra, penile urethra, or urethral orifice, requiring different equipment and procedures in sequence. The overall surgical time and steps are quite complex. Some small stones at the urethral orifice can be treated on an outpatient basis, using forceps to crush the stone or removing it directly without crushing it; however, such cases are extremely rare.

[0003] In addition, when removing fragmented urethral stones, they are usually removed by negative pressure suction or by using a stone basket to remove the fragments. The stone basket method is the most frequently used. However, ordinary stone basket removal devices require repeatedly moving the stone basket inside the urethra to grab the fragments, which is inefficient. Furthermore, the repeated movement of the device in the patient's urethra to remove the stones can increase urethral wall abrasion and cause urethritis and other harms.

[0004] In response, this design proposes a multi-functional urethral stone retrieval device that can be used in operating rooms or outpatient clinics. The key feature is that a single device can reduce damage to the urethral wall during stone removal by employing multiple methods, while also quickly removing fragmented stones, thus improving both the safety and efficiency of the device.

[0005] A search revealed no multifunctional urethral stone grasping device design. For example, Chinese patent application CN208301703U, a stone grasping device for urology, only features a grasping tip that can be retracted into a cannula and an arc-shaped structure at one end of the cannula, which is designed to prevent the grasping tip and cannula from causing damage to the urethra when inserted into the urethral opening. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a urethral stone grasping device to solve the issues raised in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a urethral stone retrieval device, comprising a urethroscope handle and a urethroscope sheath, wherein the urethroscope sheath is fixedly installed at the front end of the urethroscope handle, and a stone retrieval mechanism and an expansion assembly are installed between the urethroscope handle and the urethroscope sheath, wherein the stone retrieval mechanism includes an annular airbag, an air inlet, a urethral tube, a guide wire, and a stone basket.

[0008] The annular balloon is installed at the edge of the outer wall of the front end of the urethroscope sheath. The air inlet is opened at the edge of one side of the inner wall of the urethroscope sheath, and the inner wall of one end of the air inlet is connected to the inner wall of the annular balloon. The outer wall of the urethral tube is interwoven with the inner wall of the urethroscope handle and the inner wall of the urethroscope sheath. The outer wall of the guidewire is interwoven with the inner wall of the urethral tube. One side of the stone basket is fixedly connected to one end of the guidewire. The stone basket is in the shape of a spoon arc.

[0009] The expansion assembly includes a mounting bracket installed on one side of the outer wall of the urethroscope handle. A small air pump is installed on the top of the mounting bracket, and an air pump switch is installed on one side of the mounting bracket. The small air pump is electrically connected to an external power source through the air pump switch. A first air guide tube is inserted through the inner wall of the mounting bracket, and a second air guide tube is inserted through one end of the urethroscope sheath. The small air pump is connected to the inner wall of the air inlet through the inner walls of the first and second air guide tubes.

[0010] Preferably, the urethroscope handle is equipped with a lithotripsy component, a disinfection component, and an anti-dislodgement mechanism.

[0011] Preferably, the lithotripsy assembly includes an insertion tip installed at one edge of the front end of the urethroscope sheath, and an illumination module is installed at the upper edge of one side of the insertion tip.

[0012] Preferably, an endoscope camera is installed at the middle position on one side of the probe tip, and a holmium laser module is installed at the lower edge on one side of the probe tip.

[0013] Preferably, a first connecting pipe is installed on one side of the mounting frame, and a connector is inserted through the top of the first connecting pipe. An optical fiber wire is fixedly installed at one end of the connector, and one end of the optical fiber wire passes through the inner wall of the mounting frame, the inner wall of the first air guide pipe, the inner wall of the second air guide pipe, and the inner wall of the air inlet and is fixedly connected to the probe end.

[0014] Preferably, a second connecting tube is inserted and connected to one side of the outer wall of the urethroscope handle, and the outer wall of one end of the urethral tubing is inserted and connected to the inner wall of the second connecting tube. One end of the urethral tubing passes through the outer wall of the second connecting tube and is fixedly connected to a connecting frame. One end of the guidewire passes through the outer wall of one side of the connecting frame and is fixedly connected to a connecting ball.

[0015] Preferably, the disinfection component includes a third connecting tube inserted and installed on the other side of the outer wall of the urethroscope handle, the inner wall of the urethroscope handle has a flow channel, and both sides of the inner wall of the flow channel have connecting holes.

[0016] Preferably, the inner walls of the two connecting holes are respectively connected to the inner walls of the second connecting tube and the third connecting tube, and the inner wall of one end of the flow channel is connected to the inner wall of the urethroscope sheath.

[0017] Preferably, the outer wall of the urethral tubing passes through the inner wall of the flow channel and is inserted into the inner wall of the urethroscope sheath, and the outer wall of the second air tube passes through the inner wall of the flow channel and is inserted into one side of the urethroscope sheath.

[0018] Preferably, the anti-dislodgement mechanism includes a connecting rod fixed to one side of the bottom of the urethroscope handle, a retaining ring fixed to the bottom of the connecting rod, and a silicone pad fitted on the outer wall of one end of the urethroscope handle.

[0019] The technical effects and advantages of this invention are as follows:

[0020] 1. This invention, by setting up a stone retrieval mechanism and an expansion component, after laser fragmentation of urethral stones in patients, activates the expansion component. A small air pump is activated via an air pump switch, allowing airflow to be introduced into the annular balloon through the first air tube, the second air tube, and the air inlet, causing it to expand. This supports the area inside the patient's urethra containing the stone fragments, increasing its inner diameter. The urethral tubing is then pushed to move to the rear of the stone fragments, and the guidewire is pushed to push out the stone basket, which, due to its elasticity, unfolds and wraps around the rear of the stone fragments. Pulling the guidewire allows the stone basket, encasing the stone fragments, to enter the urethroscope sheath. Because the urethral wall in this area is expanded by the annular balloon, the friction between the stone basket and the patient's urethral wall is reduced when the stone basket moves the stone fragments, reducing urethral wear. Simultaneously, the curved shape of the stone basket scoop facilitates opening and grasping within a limited space, effectively encasing and extracting the stone fragments, improving stone retrieval efficiency and further reducing friction with the urethral wall. Therefore, only local anesthesia is needed during the procedure, making it convenient for surgical or outpatient use.

[0021] 2. This invention incorporates a disinfection component. The urethral endoscope sheath inserted into the patient's urethra is made of antibacterial material. Before use, disinfectant is introduced into the flow channel through a third connecting tube to disinfect the urethral tubing and the inner wall of the urethral endoscope sheath. This allows for both retraction and disinfection within the flow channel, eliminating the need for separate disinfection. This achieves double-sided antibacterial protection, improving the safety of the device. Additionally, a holmium laser module further enhances its practicality.

[0022] 3. The present invention uses an anti-slip mechanism. When operating the urethral stone grasping device, the user holds the urethroscope handle and inserts the index finger through the retaining ring at the bottom of the connecting rod to hook the retaining ring. At the same time, the silicone pad on the outer wall of the urethroscope handle contacts the user's hand to increase friction, prevent the device from slipping, and improve the stability of the urethroscope handle operation.

[0023] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the front structure of the present invention;

[0026] Figure 2 This is a side view of the structure of the present invention;

[0027] Figure 3 This is an appendix to the specification of this invention. Figure 2 Enlarged structural diagram at point A;

[0028] Figure 4 This is an appendix to the specification of this invention. Figure 2 Enlarged structural diagram at point B;

[0029] Figure 5 This is a schematic diagram of the expansion component of the present invention;

[0030] Figure 6 This is an appendix to the specification of this invention. Figure 5 Enlarged structural diagram at point C;

[0031] Figure 7 This is a schematic diagram of the structure of the stone basket of the present invention in its contracted state;

[0032] Figure 8 This is an appendix to the specification of this invention. Figure 7 Enlarged structural diagram at point D;

[0033] Figure 9 This is a schematic diagram of the structure of the urethral tubing and guide wire connected to the second connecting tube of the present invention;

[0034] Figure 10 This is a schematic diagram of the internal structure of the urethroscope handle of the present invention.

[0035] In the diagram: 1. Urethroscope handle; 2. Urethroscope sheath; 3. Stone retrieval mechanism; 301. Circular airbag; 302. Air inlet; 303. Urethral tubing; 304. Guide wire; 305. Stone basket; 4. Expansion assembly; 401. Mounting bracket; 402. Mini air pump; 403. Air pump switch; 404. First air duct; 405. Second air duct; 5. Stone fragmentation assembly; 501. Insertion tip; 502. Illumination module; 503. Endoscopic camera; 504. Holmium laser module; 505. First connecting tube; 506. Connector; 507. Fiber optic cable; 6. Second connecting tube; 7. Connecting frame; 8. Connecting ball; 9. Disinfection assembly; 901. Third connecting tube; 902. Flow channel; 903. Connecting hole; 10. Anti-dislodgement mechanism; 1001. Connecting rod; 1002. Clamping ring; 1003. Silicone pad. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] This invention provides, for example Figure 1-10 The illustrated urethral stone retrieval device includes a urethroscope handle 1 and a urethroscope sheath 2. The urethroscope sheath 2 is fixedly installed at the front end of the urethroscope handle 1. A stone retrieval mechanism 3 and an expansion assembly 4 are installed between the urethroscope handle 1 and the urethroscope sheath 2. The stone retrieval mechanism 3 includes a ring-shaped airbag 301, an air inlet 302, a urethral tube 303, a guide wire 304, and a stone basket 305.

[0038] The annular balloon 301 is installed at the edge of the outer wall of the front end of the urethroscope sheath 2. The air inlet 302 is opened at the edge of one side of the inner wall of the urethroscope sheath 2, and the inner wall of one end of the air inlet 302 is connected to the inner wall of the annular balloon 301. The outer wall of the urethral tube 303 is interwoven with the inner wall of the urethroscope handle 1 and the inner wall of the urethroscope sheath 2. The outer wall of the guidewire 304 is interwoven with the inner wall of the urethral tube 303. One side of the stone basket 305 is fixedly connected to one end of the guidewire 304.

[0039] The stone basket 305 is shaped like a spoon, which further facilitates grasping and reduces friction with the urethra, while improving the efficiency of stone grasping and making it easier to grasp within a limited space.

[0040] The expansion assembly 4 includes a mounting bracket 401 installed on one side of the outer wall of the urethroscope handle 1. A small air pump 402 is installed on the top of the mounting bracket 401, and an air pump switch 403 is installed on one side of the mounting bracket 401. The small air pump 402 is electrically connected to an external power source through the air pump switch 403. A first air guide tube 404 is inserted through the inner wall of the mounting bracket 401, and a second air guide tube 405 is inserted through one end of the urethroscope sheath 2. The small air pump 402 communicates with the inner wall of the air inlet 302 through the inner walls of the first air guide tube 404 and the second air guide tube 405.

[0041] During use, medical staff operate the urethral stone grasping device by holding the urethroscope handle 1. Before grasping the stone, the entire device is disinfected and sterilized. The urethroscope sheath 2 is inserted into the patient's urethra, and the urethral stone is crushed by the stone-breaking component 5 at the front end of the urethroscope sheath 2. Then, the small air pump 402 on the expansion component 4 is started by the air pump switch 403. The small air pump 402 is started on the mounting bracket 401 on the outer wall of the urethroscope handle 1, and the airflow is directed through the first air guide tube 404, the second air guide tube 405, and the air inlet 302. Airflow is introduced into the annular balloon 301 through the aforementioned structure. The annular balloon 301 inflates at the front end of the urethral endoscope sheath 2, expanding the inner diameter of the patient's urethra. This then pushes the urethral tubing 303 to the rear end of the stone fragmentation process, and pushes the guidewire 304 to push the stone basket 305 out of the urethral tubing 303. After the pressure from the inner wall of the urethral tubing 303 is released, the stone basket 305 expands elastically, forming a hemispherical, spoon-shaped arc that surrounds the rear of the fragmented stone. The shape change of the stone basket 305 is as shown in the attached instruction manual. Figure 4 , 7 As shown, the guide wire 304 is then pulled on the urethroscope handle 1 to move the stone basket 305 around the stones. Since the area of ​​the patient's urethra where stones are fragmented is expanded by the annular balloon 301, the friction between the stone basket 305 and the urethral wall is reduced as the stone basket moves around. All stones can be extracted at once, reducing the risk of urethritis caused by frequent friction during stone extraction and improving stone retrieval efficiency. After the stones are pulled into the urethroscope sheath 2 by the stone basket 305, the small air pump 402 is controlled by the air pump switch 403 to draw air, thereby contracting the annular balloon 301, which no longer supports the urethral wall. The urethroscope sheath 2 can then be withdrawn from the patient's urethra to collect the stones. This urethral stone retrieval device significantly reduces pain for the patient when retrieval and fragmenting stones. Treatment only requires local anesthesia, and this type of procedure can be completed on an outpatient basis, reducing the patient's treatment burden and eliminating the need for complicated surgical and hospitalization procedures.

[0042] Furthermore, as per the instruction manual... Figure 6-10As shown, the urethroscope handle 1 is equipped with a lithotripsy component 5, a disinfection component 9, and an anti-dislodgement mechanism 10. The lithotripsy component 5 is installed at the front end of the urethroscope sheath 2 and is connected to the urethroscope handle 1 through the urethroscope sheath 2. The disinfection component 9 and the anti-dislodgement component 10 are both installed on the urethroscope handle 1 and are distributed inside and outside.

[0043] Furthermore, as per the instruction manual... Figure 7-8 As shown, the lithotripsy assembly 5 includes an insertion tip 501 installed at one edge of the front end of the urethroscope sheath 2, and an illumination module 502 is installed at the upper edge of one side of the insertion tip 501.

[0044] An endoscope 503 is installed in the middle of one side of the probe tip 501, and a holmium laser module 504 is installed at the lower edge of one side of the probe tip 501. When the urethral sheath 2 is inserted into the patient's urethra, the illumination is provided by the illumination module 502 above the front side of the probe tip 501, so that the endoscope 503 in the middle area of ​​the front side of the probe tip 501 can transmit the image inside the urethra more clearly, providing medical staff with a clear image of the urinary tract. When the urethral sheath 2 approaches the urethral stone, the holmium laser module 504 at the lower edge of the front side of the probe tip 501 is activated to cut it into pieces. Then the stone removal mechanism 3 can be used to remove the stone fragments. The holmium laser module 504 is an application of the existing functional structure.

[0045] Furthermore, as per the instruction manual... Figure 5-6 As shown, a first connecting pipe 505 is installed on one side of the mounting bracket 401. A connector 506 is inserted and connected to the top of the first connecting pipe 505. An optical fiber wire 507 is fixedly installed at one end of the connector 506. One end of the optical fiber wire 507 passes through the inner wall of the mounting bracket 401, the inner wall of the first air guide pipe 404, the inner wall of the second air guide pipe 405, and the inner wall of the air inlet 302, and is fixedly connected to the probe end 501. When crushing urethral stones, the lighting module 502, the endoscopic camera 503, and the probe end 501 at the front end of the urethral endoscope sheath 2 are activated. The holmium laser module 504 works together. During the operation of the above equipment, the fiber optic cable 507 passes through the outside of the urethroscope handle 1 and is electrically connected to the external power supply through the connector 506, thereby supplying power to the lighting module 502, the endoscope camera 503 and the holmium laser module 504. At the same time, with the probe tip 501 installed at the front end of the urethroscope sheath 2, it does not affect the insertion and extension of the urethral tube 303 at its front end. When the stone basket 305 of the stone retrieval mechanism 3 is wrapped with the stone and dragged into the urethroscope sheath 2, it enters from the front end along with the urethral tube 303.

[0046] Furthermore, as per the instruction manual... Figure 9As shown, a second connecting tube 6 is inserted and connected to one side of the outer wall of the urethroscope handle 1, and the outer wall of one end of the urethral tube 303 is inserted and connected to the inner wall of the second connecting tube 6. One end of the urethral tube 303 passes through the outer wall of the second connecting tube 6 and is fixedly connected to a connecting frame 7. One end of the guide wire 304 passes through the outer wall of one side of the connecting frame 7 and is fixedly connected to a connecting ball 8. By passing the urethral tube 303 through the second connecting tube 6 and connecting it to the connecting frame 7, and by passing the guide wire 304 through the connecting frame 7 and connecting it to the connecting ball 8 on the outside, it is easier for medical staff to operate the urethral tube 303 and guide wire 304 when moving them, making it more convenient to use.

[0047] Furthermore, as stated in the appendix to the specification Figure 2 and 10 As shown, the disinfection component 9 includes a third connecting tube 901 that is inserted and installed on the other side of the outer wall of the urethroscope handle 1. The inner wall of the urethroscope handle 1 has a flow channel 902. Both sides of the inner wall of the flow channel 902 have connection holes 903. The urethral tube 303 passes through the second connecting tube 6 and one of the connection holes 903 and is inserted inside the flow channel 902 so that it enters the urethroscope sheath 2 and can extend and retract inside the patient's urethra.

[0048] The inner walls of the two connecting holes 903 are connected to the inner walls of the second connecting tube 6 and the third connecting tube 901, respectively. The inner wall of one end of the flow channel 902 is connected to the inner wall of the urethral endoscope sheath 2. Furthermore, all structures on this urethral stone grasping device, such as the urethral endoscope sheath 2, the urethral flexible tube 303, the guide wire 304, and the stone basket 305, are made of antibacterial materials, which fully protects the patient's urethra from infection during stone treatment.

[0049] The outer wall of the urethral tubing 303 passes through the inner wall of the flow channel 902 and is inserted into the inner wall of the urethroscope sheath 2. The outer wall of the second air duct 405 passes through the inner wall of the flow channel 902 and is inserted into one side of the urethroscope sheath 2. By setting the second connecting pipe 6 and the third connecting pipe 901 on both sides of the urethroscope handle 1, not only can the urethral tubing 303 and the guide wire 304 be inserted into the urethroscope sheath 2, but also, before the stone grasping device is used, it is connected to the external disinfection device through the third connecting pipe 901, so that the disinfectant flows into the flow channel 902 through the third connecting pipe 901 and the connecting hole 903, and flows in the flow channel 902 to contact the urethral tubing 303 inserted therein, thereby achieving the effect of sterilization inside the device. There is no need to pull out the tubing for disinfection. In addition, the disinfection component 9 can introduce lubricant into the patient's urethra, so that when the grasping device enters the patient's urethra, friction is reduced and the patient's discomfort is reduced.

[0050] Furthermore, as per the instruction manual... Figure 1 and 10As shown, the anti-dislodgement mechanism 10 includes a connecting rod 1001 fixed to one side of the bottom of the urethroscope handle 1. A retaining ring 1002 is fixedly provided at the bottom of the connecting rod 1001. A silicone pad 1003 is fitted on the outer wall of one end of the urethroscope handle 1. Medical personnel operate the entire stone-grabbing device through the urethroscope handle 1. During use, the index finger of the hand can pass through the retaining ring 1002 connected to the urethroscope handle 1 via the connecting rod 1001. The silicone pad 1003 is fitted on the handhold area, so that during use, it can not only be fixed by the retaining ring 1002, but also the silicone pad 1003 increases the friction between the handle and the hand, making it less likely to fall off, thereby improving the stability of the stone-grabbing device.

[0051] Although the present invention has 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; and these 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 embodiments of the present invention.

Claims

1. A urethral stone grasping device, comprising a urethroscope handle (1) and a urethroscope sheath (2), characterized in that: The urethroscope sheath (2) is fixedly installed at the front end of the urethroscope handle (1). A stone retrieval mechanism (3) and an expansion assembly (4) are installed between the urethroscope handle (1) and the urethroscope sheath (2). The stone retrieval mechanism (3) includes a ring-shaped airbag (301), an air inlet (302), a urethral tube (303), a guide wire (304), and a stone basket (305). The annular balloon (301) is installed at the edge of the outer wall of the front end of the urethroscope sheath (2). The air inlet (302) is opened at the edge of one side of the inner wall of the urethroscope sheath (2), and the inner wall of one end of the air inlet (302) is connected to the inner wall of the annular balloon (301). The outer wall of the urethral tube (303) is interwoven with the inner wall of the urethroscope handle (1) and the inner wall of the urethroscope sheath (2). The outer wall of the guidewire (304) is interwoven with the inner wall of the urethral tube (303). One side of the stone basket (305) is fixedly connected to one end of the guidewire (304). The stone basket (305) is in the shape of a spoon arc. The expansion assembly (4) includes a mounting bracket (401) installed on one side of the outer wall of the urethroscope handle (1). A small air pump (402) is installed on the top of the mounting bracket (401). An air pump switch (403) is installed on one side of the mounting bracket (401). The small air pump (402) is electrically connected to an external power source through the air pump switch (403). A first air guide tube (404) is inserted through the inner wall of the mounting bracket (401). A second air guide tube (405) is inserted through one end of the urethroscope sheath (2). The small air pump (402) communicates with the inner wall of the air inlet (302) through the inner wall of the first air guide tube (404) and the inner wall of the second air guide tube (405).

2. The urethral stone grasping device according to claim 1, characterized in that: The urethroscope handle (1) is equipped with a lithotripsy component (5), a disinfection component (9), and an anti-dislodgement mechanism (10).

3. The urethral stone grasping device according to claim 2, characterized in that: The lithotripsy assembly (5) includes an insertion tip (501) installed at one edge of the front end of the urethroscope sheath (2), and an illumination module (502) is installed at the upper edge of one side of the insertion tip (501).

4. The urethral stone grasping device according to claim 3, characterized in that: An endoscope (503) is installed at the middle position on one side of the probe (501), and a holmium laser module (504) is installed at the lower edge on one side of the probe (501).

5. The urethral stone grasping device according to claim 1, characterized in that: A first connecting pipe (505) is installed on one side of the mounting bracket (401). A connector (506) is inserted and connected to the top of the first connecting pipe (505). An optical fiber wire (507) is fixedly installed at one end of the connector (506). One end of the optical fiber wire (507) passes through the inner wall of the mounting bracket (401), the inner wall of the first air guide pipe (404), the inner wall of the second air guide pipe (405), and the inner wall of the air inlet (302) and is fixedly connected to the probe end (501).

6. The urethral stone grasping device according to claim 5, characterized in that: A second connecting tube (6) is inserted and connected to one side of the outer wall of the urethroscope handle (1), and the outer wall of one end of the urethral hose (303) is inserted and connected to the inner wall of the second connecting tube (6). One end of the urethral hose (303) passes through the outer wall of the second connecting tube (6) and is fixedly connected to a connecting frame (7). One end of the guide wire (304) passes through the outer wall of one side of the connecting frame (7) and is fixedly connected to a connecting ball (8).

7. The urethral stone grasping device according to claim 6, characterized in that: The disinfection component (9) includes a third connecting tube (901) that is inserted and installed on the other side of the outer wall of the urethroscope handle (1). The inner wall of the urethroscope handle (1) is provided with a flow channel (902), and both sides of the inner wall of the flow channel (902) are provided with connecting holes (903).

8. The urethral stone grasping device according to claim 7, characterized in that: The inner walls of the two connecting holes (903) are respectively connected to the inner walls of the second connecting tube (6) and the third connecting tube (901), and the inner wall of one end of the flow channel (902) is connected to the inner wall of the urethroscope sheath (2).

9. A urethral stone grasping device according to claim 8, characterized in that: The outer wall of the urethral tube (303) passes through the inner wall of the flow channel (902) and is inserted into the inner wall of the urethral endoscope sheath (2). The outer wall of the second air tube (405) passes through the inner wall of the flow channel (902) and is inserted into one side of the urethral endoscope sheath (2).

10. A urethral stone grasping device according to claim 2, characterized in that: The anti-detachment mechanism (10) includes a connecting rod (1001) fixed to one side of the bottom of the urethroscope handle (1), a retaining ring (1002) is fixedly provided at the bottom of the connecting rod (1001), and a silicone pad (1003) is fitted on the outer wall of one end of the urethroscope handle (1).

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