Urologic surgical operation auxiliary device and use method thereof

Abstract

The invention discloses a urinary surgical operation auxiliary device and a using method thereof, and relates to the technical field of ureteroscope calculus surgeries, the urinary surgical operation auxiliary device comprises a hose, a camera and an operating handle used for operating the hose, the urinary surgical operation auxiliary device comprises a channel tube slidably arranged in the hose, and the first end of the channel tube is provided with a horn mouth and an elastic film which are connected with each other and have an adjustable included angle; an opening is formed in the elastic film; the optical fiber is coaxially sleeved in the channel pipe and is used for pulling the elastic film; and the pumping port is arranged at the second end of the channel pipe. According to the urinary surgery auxiliary device and the using method thereof, the pumping opening communicates with the negative pressure mechanism, a negative pressure environment is formed in the channel pipe, at the moment, the elastic film and the horn mouth form a structure similar to a suction cup, the stone can be wrapped, the stone is stabilized in combination with suction, and then the stone is broken through laser emitted by the optical fiber; the calculus can be effectively prevented from escaping when being broken, and the optical fiber does not need to be pulled out to replace a net basket.

Description

Technical Field

[0001] The present invention relates to the technical field of ureteroscopic stone surgery, and in particular to a urological surgery auxiliary device and a use method thereof. Background Art

[0002] Urological surgical assistive devices are various equipment and tools used to support and improve the urological surgical process. These devices can improve the safety, efficiency and precision of the operation. Common ones include ureteroscopic stone and tumor surgery, which is mainly used to treat stones and tumors in the ureter and kidney. This operation uses a ureteroscope to enter the ureter, directly observe stones and tumors, and treat them.

[0003] In conjunction with publication number CN111700581A, publication date 2020-09-25, an electronic ureteroscope, device, system and use method are disclosed, including a soft mirror body, a pressure detection channel and / or a temperature detection channel is arranged in the soft mirror body, a pressure transmission component or a pressure sensor is arranged in the pressure detection channel, the pressure transmission component is indirectly used or the pressure sensor is directly used to transmit the pressure of the liquid, gas or gas-liquid mixture at the inspection site, surgical site or treatment site to the pressure sensor or pressure tester, and a temperature sensor is arranged in the temperature detection channel.

[0004] However, in the prior art including the above-mentioned patent, four channels are required, among which the optical fiber channel and the transmission channel are separately provided, so that the stones are broken by the laser and then passed into the basket through the transmission channel for capture. However, the inconsistent positions of the two may cause the stones to escape from the body before being captured, and tiny stones are easily missed. Summary of the invention

[0005] The object of the present invention is to provide a urological surgery auxiliary device and a method of using the same, so as to solve the above-mentioned problems.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a urological surgery auxiliary device and a method of using the same, comprising a hose, a camera and an operating handle for operating the hose, comprising a channel tube slidably arranged in the hose, a first end of which is provided with a trumpet and an elastic membrane which are connected to each other and have an adjustable angle, and an opening is opened on the elastic membrane;

[0007] An optical fiber coaxially sleeved in the channel tube is used to pull the elastic membrane;

[0008] A pumping port is disposed at the second end of the channel tube.

[0009] Preferably, a plurality of fixing rods are arranged in a circumferential array on the elastic membrane, and a cable is arranged on the fixing rod, and an arc groove which slidably cooperates with the cable is opened on the optical fiber.

[0010] Preferably, the invention further comprises a sliding cavity for the movement of the optical fiber, and a convex lens with a focal length consistent with the length of the sliding cavity is fixedly provided at the end of the optical fiber.

[0011] Preferably, a limiting rod slidably matched with the optical fiber is provided in the sliding cavity, and the optical fiber is rotatable when decoupled from the limiting rod.

[0012] Preferably, the device further comprises a clamping member disposed on the fixing rod, wherein the clamping member has a clamping position extending toward the convex lens during its movable travel.

[0013] Preferably, the device further comprises a valve which is arranged between the channel tube and the optical fiber and is used to form a one-way suction channel.

[0014] Preferably, a first paddle is provided at the first end of the channel tube, and the first paddle and the bell mouth are combined to form a liquid outlet with adjustable spacing.

[0015] Preferably, a folding portion for adjusting the opening is provided in a circular array on the bell mouth, and a second paddle for supporting the channel tube is provided on the bell mouth.

[0016] Preferably, the outer wall of the bell mouth forms a drainage surface pointing to the camera when the opening is maximum.

[0017] A method of use, comprising the urological surgical auxiliary device described in the above scheme, comprising the following steps:

[0018] Step 1: The user operates the operating handle to place the hose in the patient's ureter and observes the condition of the ureter through the camera. If there is a problem of ureteral stenosis, normal saline is injected through the pumping port to make the ureter spacious by water pressure;

[0019] Step 2: Observe the location of the stone, extend the channel tube so that the opening is facing the small stone, connect the negative pressure mechanism with the pumping port and perform preliminary suction;

[0020] Step 3: Pull out the optical fiber and drive the elastic membrane and the horn mouth to fold, so that the elastic membrane is concave and surrounds the large stone to absorb the large stone;

[0021] Step 4: Slide the optical fiber along the sliding cavity and make the focus of the convex lens be located on the stone. After the stone is broken, the small stones that are broken up are sucked into the channel tube along the opening.

[0022] In the above technical scheme, a urological surgical auxiliary device and a method of using the same provided by the present invention have the following beneficial effects: the pumping port is connected to the negative pressure mechanism, a negative pressure environment is formed in the channel tube, and at this time the elastic membrane and the trumpet mouth form a structure similar to a suction cup, which can wrap the stones, stabilize the stones by suction, and then break the stones by emitting laser through optical fiber, which can effectively prevent the stones from scattering when they are broken, and there is no need to pull out the optical fiber and replace it with a net basket. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 An overall three-dimensional schematic diagram provided for an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the hose, bell mouth and elastic membrane structure provided in an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the channel tube and optical fiber structure provided in an embodiment of the present invention;

[0027] Figure 4 A schematic diagram of the internal structure of the bell mouth and the elastic membrane provided in an embodiment of the present invention;

[0028] Figure 5 A schematic diagram of the elastic membrane, cable and sliding cavity structure provided by an embodiment of the present invention;

[0029] Figure 6 A schematic diagram of the cross-sectional structure of the cable, valve and sliding cavity provided in an embodiment of the present invention;

[0030] Figure 7 A schematic diagram of the structure of an optical fiber and a fixing seat provided in an embodiment of the present invention;

[0031] Figure 8 A schematic diagram of a structure in which the elastic membrane and the bell mouth angle are reduced according to an embodiment of the present invention;

[0032] Fig. 9 A schematic diagram of the initial state structure of the elastic membrane and the bell mouth provided in an embodiment of the present invention;

[0033] Fig.10 The embodiment of the present invention provides Figure 4 A schematic diagram of the enlarged structure in the middle;

[0034] Fig.11 The embodiment of the present invention provides Figure 6 A magnified schematic diagram of structure B in the middle.

[0035] Description of reference numerals:

[0036] 1. Hose; 11. Camera; 12. Operating handle; 13. Insertion port; 2. Channel tube; 21. Side passage tube; 22. Pumping port; 23. First paddle; 3. Optical fiber; 31. Knob; 32. Convex lens; 33. Fixed seat; 34. Straight groove; 35. Arc groove; 36. Interface; 4. Bell mouth; 41. Folding part; 42. Elastic membrane; 44. Opening; 45. Fixed rod; 46. Sliding cavity; 461. Limit rod; 462. Slot; 47. Valve; 48. Elastic ring; 49. Card; 411. Bump; 412. Second paddle; 5. Pull rope; 6. Elastic part; 61. Telescopic part. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0038] like Figure 1-11 As shown, a urological surgical auxiliary device comprises a hose 1, a camera 11 and an operating handle 12 for operating the hose 1, and comprises a channel tube 2 slidably arranged in the hose 1, a first end of which is provided with a trumpet 4 and an elastic membrane 42 which are connected to each other and have an adjustable angle, and an opening 44 is opened on the elastic membrane 42;

[0039] The optical fiber 3 is coaxially sleeved in the channel tube 2 and is used to pull the elastic membrane 42;

[0040] A pumping port 22 is provided at the second end of the channel tube 2 .

[0041] Specifically, the camera 11 is located at the end of the hose 1, an insertion port 13 is provided on the operating handle 12, the tail ends of the channel tube 2 and the optical fiber 3 extend out of the hose 1 and extend out from the insertion port 13, wherein a side passage 21 is provided at the end of the channel tube 2, and the side passage 21 is integrally formed with the pumping port 22, and the pumping port 22 is used to connect to the perfusion pump or the negative pressure mechanism. The positional relationship between the side passage 21 and the optical fiber 3 is shown in FIG. Figure 3 The state shown is that the side passage 21 is located in the insertion port 13. The electronic components involved above are all common technical knowledge known to those skilled in the art and will not be described in detail here.

[0042] Furthermore, by controlling the operating handle 12 to transport the hose 1 to the location of the stone, the optical fiber 3 is then pulled and the elastic membrane 42 is driven to approach the inner wall of the bell mouth 4, and the angle between the elastic membrane 42 and the bell mouth 4 is reduced. Figure 8At this time, the pumping port 22 is connected to the negative pressure mechanism, a negative pressure environment is formed in the channel tube 2, and the elastic membrane 42 and the bell mouth 4 form a structure similar to a suction cup, which can wrap the stones, stabilize the stones by suction, and then break the stones by emitting laser through the optical fiber 3, which can effectively prevent the stones from escaping when they are broken, and suck small stones into the channel tube 2 through the opening 44.

[0043] In the above technology, the pumping port 22 is connected to the negative pressure mechanism, a negative pressure environment is formed in the channel tube 2, and at this time the elastic membrane 42 and the bell mouth 4 form a structure similar to a suction cup, which can wrap the stones, combine with suction to stabilize the stones, and then use the optical fiber 3 to emit laser to break the stones, which can effectively prevent the stones from escaping when they are broken, and there is no need to pull out the optical fiber 3 and replace it with a net basket.

[0044] As an embodiment further provided by the present invention, a plurality of fixing rods 45 are arranged in a circumferential array on the elastic membrane 42 , and a cable 5 is arranged on the fixing rod 45 , and an arc groove 35 slidably matched with the cable 5 is opened on the optical fiber 3 .

[0045] Specifically, a knob 31 for controlling the rotation of the optical fiber 3 is fixedly glued on the optical fiber 3, and a fixing seat 33 is fixedly provided at the end of the optical fiber 3, an arc groove 35 is located on the fixing seat 33, and a slider is fixedly provided at the end of the cable 5. The operator rotates the knob 31 to drive the optical fiber 3 to rotate as a whole, so that the fixing seat 33 and the arc groove 35 rotate, and the arc groove 35 guides the slider to slide along the length direction of the fixing seat 33, so that the cable 5 is pulled and drives the multiple fixing rods 45 to deflect toward the axial direction of the hose 1, and during the deflection of the fixing rods 45, the elastic membrane 42 is driven to be in a concave state and close to the inner wall of the bell mouth 4.

[0046] As another embodiment further provided by the present invention, it also includes a sliding cavity 46 for the movement of the optical fiber 3 , and a convex lens 32 with a focal length consistent with the length of the sliding cavity 46 is fixedly arranged at the end of the optical fiber 3 .

[0047] Specifically, the convex lens 32 is fixedly embedded in the fixing seat 33. The user pulls the optical fiber 3 so that the optical fiber 3 slides in the sliding cavity 46 and drives the fixing seat 33 to slide to the position as shown in FIG. Figure 4 The extreme position shown, at this time, the focus of the convex lens 32 is located at the port of the sliding cavity 46. The convex lens 32 is used to bundle the laser transmitted in the optical fiber 3, so that the laser irradiation area is smaller and the energy is more concentrated, so that the stone crushing area is smaller but the cracks are deeper, and the stone particle size after crushing is larger. Conventional pulse lasers often cause the stones to be powdered due to the large irradiation area, and the tiny crushed stones are difficult to capture. They are usually removed by natural urination, which will cause discomfort to the patient. The sliding cavity 46 provides a space for the convex lens 32 that does not directly contact the stone, preventing the stone from splashing on the optical fiber 3 when it is crushed and causing it to break.

[0048] As another embodiment further provided by the present invention, a limiting rod 461 which can slide with the optical fiber 3 is disposed in the sliding cavity 46, and the optical fiber 3 can rotate when decoupled from the limiting rod 461.

[0049] Specifically, the fixing seat 33 is also provided with a straight groove 34 which is slidably matched with the limiting rod 461. The elastic membrane 42 and the sliding cavity 46 are connected by an elastic ring 48. In the default state, the elastic ring 48 keeps the elastic membrane 42 in the position as shown in FIG. Figure 2 In the initial state shown, the angle between the elastic membrane 42 and the bell mouth 4 is approximately a straight angle. Then the optical fiber 3 is stretched so that the fixed seat 33 slides along the limit rod 461 through the straight groove 34, so that the focus of the convex lens 32 falls on the end of the sliding cavity 46, preventing the stone from directly splashing onto the optical fiber 3. At this time, the limit position of the optical fiber 3 is reached. The straight groove 34 is staggered and decoupled from the limit rod 461, so that the straight groove 34 can rotate freely. Then the knob 31 is turned again, and the optical fiber 3 drives the fixed seat 33 to rotate, and the cable 5 is pulled by the sliding cooperation between the arc groove 35 and the slider. The cable 5 pulls and drives multiple fixed rods 45 to overcome the elastic deflection of the elastic ring 48, and the degree of deflection is adjusted according to the rotation angle of the knob 31. When the channel tube 2 needs to be pulled out along the hose 1, the knob 31 is loosened, and the elastic potential energy of the elastic ring 48 is restored to restore the fixed rod 45 and the elastic membrane 42. The outer diameter of the elastic membrane 42 is smaller than the channel tube 2, and it will not interfere with the extraction of the channel tube 2.

[0050] As another embodiment further provided by the present invention, it also includes a clamping member 49 disposed on the fixing rod 45, and has a clamping position extending toward the convex lens 32 during its movable stroke.

[0051] Specifically, the clamping member 49 includes an arc-shaped portion and an abutting portion. A clamping slot 462 is provided on the sliding cavity 46, and the clamping slot 462 penetrates the limiting rod 461. The fixing seat 33 is provided with an interface 36 corresponding to the position of the clamping member 49. In the default state, the fixing rod 45 is close to the outer wall of the sliding cavity 46 and drives the clamping member 49 to abut against the clamping slot 462. At this time, the abutting portion of the clamping member 49 drives the cable 5 to extend into the sliding cavity 46. This is the clamping position. Fig.10 As shown, the cable 5 is pressed by the clamping member 49 to protrude from the inner wall of the sliding cavity 46, and the protruding portion is correspondingly engaged with the clamping groove 462, and the fixing seat 33 is pressed by the protruding portion.

[0052] When the optical fiber 3 is pulled, the fixed seat 33 will drive the sliding cavity 46 to move through the protruding part, and the sliding cavity 46 moves toward the second end of the channel tube 2, so that the fixed rod 45 is driven by the sliding cavity 46 to swing, and the angle between the fixed rod 45 and the bell mouth 4 is reduced, and multiple fixed rods 45 clamp the stone. And when the fixed rod 45 swings, it drives the clamping member 49 to move, and the arc portion of the clamping member 49 is bent to make the abutting portion slide out of the interface 36. At this time, the clamping member 49 is separated from the clamping position, so that the cable 5 is no longer pressed by the clamping member 49 and retracts into the fixed rod 45, the protruding part disappears, and the fixed seat 33 is not restricted by the protruding part and can slide freely.

[0053] At this time, slide the optical fiber 3 to the extreme position, pull the cable 5 by rotating the knob 31, and adjust the clamping angle so that the fixed rod 45 will first clamp the stone, and then the optical fiber 3 will reach the extreme position and crush the stone. During the crushing process, rotate the optical fiber 3 to further adjust the angle of the fixed rod 45 to ensure that the elastic membrane 42 wraps the stone and sucks the crushed stone through the opening 44.

[0054] As another embodiment further provided by the present invention, it also includes a valve 47 disposed between the channel tube 2 and the optical fiber 3 and used to form a one-way suction channel.

[0055] Specifically, the valve 47 is arranged at the port of the sliding cavity 46, and the valve 47 completely covers the projection of the opening 44 on its cross section. When the pumping port 22 is connected to the negative pressure mechanism, a negative pressure environment is formed in the channel tube 2. At this time, the negative pressure pulls the valve 47 to deflect toward the outer wall of the sliding cavity 46, and a suction channel is formed between the elastic membrane 42 and the valve 47. The valve 47 faces the first end of the channel tube 2 as the front. Small stones enter the back of the valve 47 through the channel, and are blocked by the valve 47 and are difficult to flow back into the patient's body, which plays a role in blocking small stones. A convex block 411 for limiting the valve 47 is arranged in the trumpet mouth 4. When physiological saline is poured into the channel tube 2, the hydraulic pressure will support the valve 47 to stop on the convex block 411. At this time, the physiological saline will be blocked by the valve 47 and will not flow out from the opening 44.

[0056] As another embodiment further provided by the present invention, a first paddle 23 is provided at the first end of the channel tube 2, and the first paddle 23 and the bell mouth 4 are combined to form a liquid outlet with an adjustable spacing.

[0057] Specifically, the first paddle 23 is fixedly arranged at the connection between the channel tube 2 and the bell mouth 4, and the first end of the channel tube 2 is fixedly connected to the bell mouth 4. The inner diameter of the first paddle 23 is larger than the outer diameter of the bell mouth 4. When a negative pressure environment is formed in the channel tube 2, the pressure will drive the first paddle 23 to be closely attached to the bell mouth 4, and the liquid outlet is closed. When the pumping port 22 is connected to the perfusion pump, a positive pressure environment filled with physiological saline is formed in the channel tube 2, and the first paddle 23 is opened by the water pressure, and the liquid outlet is opened and discharges liquid to flush the ureter.

[0058] As another embodiment further provided by the present invention, a folding portion 41 for adjusting the opening is arranged in a circular array on the bell mouth 4 , and a second paddle 412 for supporting the channel tube 2 is arranged on the bell mouth 4 .

[0059] Specifically, it also includes an elastic member 6 for connecting the bell mouth 4 and the elastic membrane 42, and a telescopic portion 61 is provided at a position corresponding to the folding portion 41 of the elastic member 6. During the deflection of the fixing rod 45 toward the axis, the outer diameter of the elastic membrane 42 is driven to expand. At this time, the telescopic portion 61 and the folding portion 41 are both expanded to compensate for the increased outer diameter, so that the opening of the bell mouth 4 is increased, the activity of the bell mouth 4 is increased, and the adsorption area of ​​the stone is increased. The outer wall of the bell mouth 4 is relative to the first end of the channel tube 2, such as Figure 8 In the state shown, the second paddle 412 supports the channel tube 2, so that the first paddle 23 is open, and a liquid outlet is formed between the first paddle 23 and the second paddle 412. When the telescopic portion 61 and the folding portion 41 are not unfolded, the first paddle 23 and the second paddle 412 are in an overlapping state.

[0060] As another embodiment further provided by the present invention, the outer wall of the bell mouth 4 forms a drainage surface pointing to the camera 11 when the opening is maximum.

[0061] Specifically, when the bell mouth 4 is opened to the maximum, the outer wall of the bell mouth 4 is inclined, and the side close to the camera 11 is inclined toward the position of the camera 11. At this time, a liquid outlet is formed between the first paddle 23 and the second paddle 412, and the width of the liquid outlet decreases along the liquid outlet direction, and the liquid will flow out closely against the outer wall of the second paddle 412, and be drained toward the camera 11 by the outer wall of the bell mouth 4. In the case of unclear vision, physiological saline is perfused into the channel tube 2 through the perfusion pump. The physiological saline will be blocked by the valve 47 and only flow out from the liquid outlet and be drained onto the camera 11, flushing the surface of the camera 11, giving priority to ensuring that the camera 11 is clear. And because the liquid outlet is not directly facing the stone, it can effectively avoid the displacement of the stone position caused by the perfusion of physiological saline, or flushing tiny stones into the deep.

[0062] like Figure 1-11As shown, a method of use, using the urological surgery auxiliary device involved in the above embodiment, comprises the following steps:

[0063] Step 1: The user operates the operating handle 12 to place the hose 1 in the patient's ureter, and observes the condition of the ureter through the camera 11. If there is a problem of ureteral stenosis, physiological saline is injected through the pumping port 22 to make the ureter spacious by water pressure;

[0064] Step 2: Observe the location of the stone, extend the channel tube 2 so that the opening 44 faces the small stone, connect the negative pressure mechanism with the pumping port 22 and perform preliminary suction;

[0065] Step 3: Pull out the optical fiber 3 and drive the elastic membrane 42 and the horn mouth 4 to fold, so that the elastic membrane 42 is concave and surrounds the large stone to absorb the large stone;

[0066] Step 4: Slide the optical fiber 3 along the sliding cavity 46 and make the focus of the convex lens 32 be located on the stone. After the stone is crushed, the small stones that are broken up are sucked into the channel tube 2 along the opening 44.

[0067] Specifically, in step three, the optical fiber 3 is pulled to drive the fixed rod 45 to swing. The fixed rod 45 will first clamp the stone, and then the optical fiber 3 will emit a pulse laser after reaching the extreme position. The laser transmitted in the optical fiber 3 is bundled by the convex lens 32. During the crushing process, the optical fiber 3 is rotated to further adjust the angle of the fixed rod 45 to ensure that the elastic membrane 42 wraps the stone and sucks the crushed stone through the opening 44.

[0068] Furthermore, when the bell mouth 4 is opened to the maximum, the outer wall of the bell mouth 4 is inclined, and the side close to the camera 11 will be inclined toward the position of the camera 11. The physiological saline will be blocked by the valve 47 and will only flow out from the liquid outlet and be drained onto the camera 11, flushing the surface of the camera 11, giving priority to ensuring the clarity of the camera 11.

[0069] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A urological surgery auxiliary device, comprising a hose (1), a camera (11) and an operating handle (12) for operating the hose (1), characterized in that: It comprises a channel tube (2) slidably arranged in a hose (1), a first end of which is provided with a bell mouth (4) and an elastic membrane (42) which are connected to each other and have an adjustable angle, and an opening (44) is formed on the elastic membrane (42); An optical fiber (3) coaxially sleeved in the channel tube (2) and used for pulling the elastic membrane (42); A pumping port (22) is arranged at the second end of the channel tube (2).

2. The urological surgery auxiliary device according to claim 1, characterized in that: A plurality of fixing rods (45) are arranged in a circumferential array on the elastic membrane (42), and a cable (5) is arranged on the fixing rod (45), and an arc groove (35) that slidably cooperates with the cable (5) is provided on the optical fiber (3).

3. The urological surgery auxiliary device according to claim 1, characterized in that: It also comprises a sliding cavity (46) for the movement of the optical fiber (3), and a convex lens (32) having a focal length consistent with the length of the sliding cavity (46) is fixedly arranged at the end of the optical fiber (3).

4. The urological surgery auxiliary device according to claim 3, characterized in that: A limiting rod (461) that can slide with the optical fiber (3) is arranged in the sliding cavity (46), and the optical fiber (3) and the limiting rod (461) can rotate when decoupled.

5. The urological surgery auxiliary device according to claim 2, characterized in that: It also includes a clamping member (49) arranged on the fixing rod (45), which has a clamping position extending toward the convex lens (32) during its movable stroke.

6. The urological surgery auxiliary device according to claim 1, characterized in that: It also includes a valve (47) which is arranged between the channel tube (2) and the optical fiber (3) and is used to form a one-way suction channel.

7. The urological surgery auxiliary device according to claim 1, characterized in that: A first paddle (23) is provided at the first end of the channel tube (2), and the first paddle (23) and the bell mouth (4) are combined to form a liquid outlet with adjustable spacing.

8. The urological surgery auxiliary device according to claim 1, characterized in that: The bell mouth (4) is provided with a folding portion (41) for adjusting the opening in a circular array, and the bell mouth (4) is provided with a second paddle (412) for supporting the channel tube (2).

9. The urological surgery auxiliary device according to claim 1, characterized in that: The outer wall of the bell mouth (4) forms a drainage surface pointing toward the camera (11) when the opening is maximum.

10. A method of use, characterized in that: The urological surgery auxiliary device according to any one of claims 1 to 9 comprises the following steps: Step 1: The user operates the operating handle (12) to place the hose (1) in the patient's ureter, and observes the condition of the ureter through the camera (11). If there is a problem of ureteral stenosis, physiological saline is injected through the pumping port (22) to make the ureter spacious by water pressure; Step 2: Observe the location of the stone, extend the channel tube (2) so that the opening (44) is facing the small stone, connect the negative pressure mechanism with the pumping port (22) and perform preliminary suction; Step 3: Pulling the optical fiber (3) drives the elastic membrane (42) and the bell mouth (4) to fold, so that the elastic membrane (42) is concave and surrounds the large stone, thereby absorbing the large stone; Step 4: Slide the optical fiber (3) along the sliding cavity (46) and make the focus of the convex lens (32) be located on the stone. After the stone is crushed, the small stones that are broken up are sucked into the channel tube (2) along the opening (44).

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