A cystoscope capable of accurately locating the position of a double J tube

Abstract

The present invention relates to the technical field of medical devices, and in particular to a cystoscope capable of accurately locating the position of a double-J tube, comprising a handle portion and a mirror body portion, a clamp channel being arranged in the mirror body portion, the mirror body portion comprising an operating section and a main mirror tube section, an imaging system for photographing images being arranged at the end of the operating section; a tube clamping assembly is also arranged in the operating section, the tube clamping assembly comprises a limit plate and a push component, the limit plate is connected to the push component, and the clamp channel is arranged above the limit plate; a limit card slot is also arranged along the central axis of the limit plate, baffles are also arranged on both sides of the limit card slot body, and the double-J tube can pass through the baffles. In the removal operation of the double-J tube, when the double-J tube passes through the baffle, the mirror body portion is pulled backward, and in this process, the length of the double-J tube above the limit plate is gradually shortened, the originally curled end of the double-J tube can be gradually stretched, and the end of the double-J tube can be exposed on the surface of the limit plate, thereby improving the convenience of removing the double-J tube.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to a cystoscope capable of accurately locating a double-J tube. Background Art

[0002] The double-J tube is a routine treatment material in urology. It is widely used for postoperative ureteral support and drainage in patients with upper urinary tract stenosis and stones to prevent upper urinary tract obstruction secondary to local inflammatory edema caused by stones or surgical factors. It is usually removed 1-3 months after surgery.

[0003] In the prior art, in the removal operation of the double J tube, a cystoscope needs to be inserted into the human bladder along the urethra. After the cystoscope observes the position of the curled end of the double J tube in the human bladder, a sampling forceps is inserted into the human bladder along the cystoscope clamp channel, the sampling forceps clamp the curled end of the double J tube, and the double J tube is dragged along the cystoscope clamp channel to be pulled out of the body.

[0004] However, the end of the double J tube in the human bladder is curled into a ring structure, and it is difficult to clamp the end of the double J tube when the sampling forceps clamp the double J tube. When the double J tube is pulled through the clamp channel, the double J tube at the clamping position is easy to form a folded state in the clamp channel, so that the resistance of the double J tube passing through the clamp channel will increase, which increases the difficulty of removing the double J tube to a certain extent; more importantly, in the process of clinical retention of the double J tube, stones may grow on its surface, causing the diameter of the double J tube to increase, and the double J tube may be stuck when passing through the narrow segment of the ureter; therefore, in the actual operation of removing the double J tube, medical staff need to rely on the resistance of pulling the double J tube to determine whether the double J tube is stuck in the ureter, so as to avoid ureteral injury / avulsion caused by excessive pulling force; however, in the prior art, the double J tube forms a folded state in the clamp channel, which also causes the resistance of the double J tube passing through the clamp channel to increase, so that it is difficult for medical staff to determine the specific cause of the increase in the pulling resistance of the double J tube, thereby affecting the removal of the double J tube.

[0005] Therefore, in the operation of removing the double J tube, how to ensure that the sampling forceps can accurately clamp the end of the double J tube is a technical problem that needs to be solved urgently in the prior art. Summary of the invention

[0006] The purpose of the present invention is to provide a cystoscope that can accurately locate the position of a double J tube in order to solve the problem in the prior art of how to ensure that the sampling forceps can accurately clamp the end of the double J tube during the operation of removing the double J tube.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A cystoscope capable of accurately locating a double J tube comprises a handle and a body, wherein the body has an internal end and an external end, the handle is arranged at the external end of the body, and is used for an operator to hold the handle; a forceps channel is arranged in the body, the forceps channel runs through the body, and is used for forming a channel for a sampling forceps to enter a human body; the body comprises an operating section and a main tube section, the operating section is used for extending into a human bladder, and an imaging system for taking images is arranged at the end of the operating section;

[0009] A tube clamping assembly is also provided in the operating section, and the tube clamping assembly includes a limit plate and a pushing component, wherein the limit plate is connected to the pushing component, and the pushing component is used to push the limit plate to make it extend out of the end of the operating section, and the clamp channel is provided above the limit plate, and the central axis of the limit plate is parallel to the central axis of the clamp channel;

[0010] A limiting card slot is also provided along the central axis of the limiting plate, the limiting card slot extends to a side away from the pushing component and passes through the limiting plate, the width of the limiting card slot is greater than the diameter of the double J tube indwelling in the human bladder, and baffles are also provided on both sides of the limiting card slot body.

[0011] The baffle is inclined toward the bottom of the limiting slot, the interval width between the ends of the two baffles is smaller than the diameter of the double J tube retained in the human bladder, a spring pin is further provided in the limiting slot body, the end of the spring pin abuts against the baffle, when the double J tube enters the limiting slot and moves to the bottom of the slot, the double J tube squeezes the baffle to shrink the spring pin, and the double J tube can pass through the baffle.

[0012] Preferably, the baffle plate is used as a dividing line to divide the limit slot into a first slot section and a second slot section, the first slot section is arranged on the slot mouth side of the limit slot, and the second slot section is arranged on the slot bottom side of the limit slot, the first slot section is arranged in a trumpet shape, and the second slot section is arranged in a circular ring shape.

[0013] Preferably, the limit plate is also provided with a guide plate, which is arranged on one side of the pushing component, and the end of the guide plate is spaced from the bottom of the groove of the second groove section, the central axis of the guide plate coincides with the central axis of the limit plate, and the guide plate and the limit plate have a first matching form and a second matching form, when the connecting portion of the guide plate and the limit plate extends out of the end of the operating section, the first matching form is formed between the guide plate and the limit plate, the central axis of the guide plate and the central axis of the limit slot form an acute angle matching, and when the first matching form is formed between the guide plate and the limit plate, the curling section of the double J tube sliding into the second groove section is within the range of the guide plate; when the connecting portion of the guide plate and the limit plate is retracted into the accommodating cavity inside the operating section, the guide plate gradually approaches the surface of the limit plate under the action of the extrusion force, and finally fits with the surface of the limit plate, thereby forming a second matching form between the guide plate and the limit plate.

[0014] Preferably, a hanging groove is further provided at the end of the guide plate, the hanging groove passes through the guide plate, the notch of the hanging groove faces the side of the guide plate, and the width of the hanging groove is greater than the diameter of the double J tube placed in the human bladder.

[0015] Preferably, the notch of the hanging slot is arranged corresponding to the central axis of the guide plate.

[0016] Preferably, the side wall of the hanging groove away from the end of the guide plate is inclined, and the other side wall is horizontally arranged, so that the groove bottom width of the hanging groove is greater than the width of the groove opening.

[0017] Preferably, the inner wall of the hanging groove is set to be a rough surface.

[0018] Preferably, the width of the end of the guide plate from the horizontal side wall of the hanging groove is greater than the diameter of the double J tube indwelling in the human bladder.

[0019] Preferably, the limiting plate and the guide plate are both configured as arc-shaped structures, and the inner diameter of the limiting plate is matched with the outer diameter of the guide plate.

[0020] Preferably, the length of the limiting slot is less than 1 / 3 of the length of the limiting plate.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0022] 1. A cystoscope capable of accurately locating the position of a double J tube according to the present invention, in the removal operation of the double J tube, after the operating section enters the human bladder, the limiting plate is pushed out of the end of the operating section, and then the mirror body is pushed to move toward the curled end of the double J tube in the human bladder, so that the double J tube enters the limiting card slot. When the double J tube passes through the baffle, the mirror body is pulled to move backward. During this process, the double J tube passes through the limiting card slot segment on the lower side of the baffle, and the length of the double J tube above the limiting plate is gradually shortened, so that the originally curled end of the double J tube can gradually The end of the double J tube can be stretched, and the end of the double J tube can be exposed on the surface of the limiting plate, so that the sampling forceps can easily clamp the end of the double J tube, avoiding the folding of the double J tube when passing through the clamp channel, resulting in increased resistance of the double J tube passing through the clamp channel, and improving the convenience of removing the double J tube; and the present invention avoids the double J tube from forming a folded state when passing through the clamp channel, and can also eliminate the situation where the pulling resistance increases when the double J tube passes through the clamp channel, so that medical staff can more accurately judge the state of the double J tube passing through the human ureter, reducing the risk of ureteral damage to patients during the double J tube removal operation;

[0023] 2. A cystoscope capable of accurately locating the position of a double J tube according to the present invention, wherein a guide plate is further arranged on the limit plate, the guide plate is arranged on one side of the push component, and the end of the guide plate is spaced from the bottom of the second slot section, the central axis of the guide plate coincides with the central axis of the limit plate, and the guide plate and the limit plate have a first matching form and a second matching form, when the connecting portion between the guide plate and the limit plate extends out of the end of the operating section, the first matching form is formed between the guide plate and the limit plate, the central axis of the guide plate and the limit slot form an acute angle match, and when the first matching form is formed between the guide plate and the limit plate, the curled section of the double J tube sliding into the second slot section is within the range of the guide plate; when the connecting portion between the guide plate and the limit plate is retracted into the accommodating cavity inside the operating section, the guide plate gradually approaches the surface of the limit plate under the action of the extrusion force, and finally fits with the surface of the limit plate, thereby forming a second matching form between the guide plate and the limit plate. With this structural arrangement, after the double J tube enters the second groove section, the pushing component is used to completely push out the limit plate, and the limit plate and the guide plate form a first matching form. At this time, the curled segment of the double J tube can fall within the range of the guide plate. In the process of pulling the mirror body to move it in the direction outside the body, the double J tube gradually stretches, and finally the end of the double J tube will be exposed on the guide plate, so that the end of the double J tube can be kept away from the second groove section, reducing the risk of the double J tube end accidentally slipping out of the second groove section, and further improving the practicality of the present invention in actual use; further, with this structural arrangement, the end of the double J tube can Earlier exposure reduces the distance that the mirror body retracts outside the body, thereby reducing the risk of damage caused by the mirror body rubbing against the human urethra; further, the guide plate is provided to amplify the pressure exerted on the guide plate by the bending deformation of the double J tube itself, thereby increasing the release amount of the bending deformation of the double J tube under the condition of unit displacement, so that on the one hand, the double J tube can form a better stretch, so that the sampling forceps can clamp the end of the double J tube more accurately; on the other hand, it can also further speed up the exposure of the end of the double J tube, thereby reducing the distance that the mirror body retracts outside the body, and reducing the risk of damage caused by the mirror body rubbing against the human urethra;

[0024] 3. In the cystoscope capable of accurately locating the position of a double J tube described in the present invention, the hanging groove is arranged at the end of the guide plate. In view of the situation that the curling direction of the double J tube indwelling in the human bladder may deviate from the guide plate, after the guide plate and the limit plate form a first matching form, the double J tube is guided into the hanging groove by using a sampling forceps, or the mirror body is horizontally rotated to guide the double J tube into the hanging groove, and then the mirror body is pulled to move it toward the outside of the body, the double J tube gradually stretches, and finally the end of the double J tube will be exposed in the position of the hanging groove. ; Moreover, in the present embodiment, when the curling direction of the double J tube placed in the human bladder is toward the guide plate, the hanging groove can clamp the end of the double J tube, thereby further reducing the risk of the double J tube accidentally slipping off the guide plate; on the other hand, in the present embodiment, after the double J tube is clamped on the hanging groove, the pushing component is used to pull the limit plate to shrink it back to the inside of the operating section. During this process, the guide plate gradually approaches the limit plate, and the guide plate will apply pressure to the double J tube body, which can further accelerate the release of the bending deformation of the double J tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the cross-sectional structure of a cystoscope that can accurately locate the position of a double J tube;

[0026] Figure 2 is a schematic diagram of the first cross-sectional structure of the operating section;

[0027] Figure 3 It is an isometric structural diagram of the limit plate;

[0028] Figure 4 1 is a schematic diagram of the top view structure of the limiting plate;

[0029] Figure 5 yes Figure 4 The structural diagram of A in the figure;

[0030] Figure 6 Schematic diagram of the cross-sectional structure of the limiting plate;

[0031] Figure 7 It is a schematic diagram of the second cross-sectional structure of the operating section.

[0032] Markings in the figure: 1-handle part, 2-mirror body part, 3-clamp channel, 4-operating section, 5-main mirror tube section, 6-tube clamping assembly, 7-limiting plate, 8-pushing component, 9-limiting slot, 10-baffle, 11-spring pin, 12-first slot section, 13-second slot section, 14-guide plate, 15-hanging slot, 16-stop block, 17-imaging system. DETAILED DESCRIPTION

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0035] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0039] Example 1: Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown, a cystoscope capable of accurately locating the position of a double J tube according to the present invention comprises a handle portion 1 and a body portion 2, wherein the body portion 2 has an internal end and an external end, the handle portion 1 is arranged at the external end of the body portion 2, and the handle portion 1 is used for an operator to hold; a forceps channel 3 is arranged in the body portion 2, the forceps channel 3 runs through the body portion 2, and the forceps channel 3 is used to form a channel for the sampling forceps to enter the human body; the body portion 2 comprises an operating section 4 and a main mirror tube section 5, the operating section 4 is used to extend into the human bladder, and an imaging system 17 for taking images is arranged at the end of the operating section 4;

[0040] The operating section 4 is further provided with a tube clamping assembly 6, which includes a limit plate 7 and a pushing component 8, wherein the limit plate 7 is connected to the pushing component 8, and the pushing component 8 is used to push the limit plate 7 to extend out of the end of the operating section 4, and the clamp channel 3 is arranged above the limit plate 7, and the central axis of the limit plate 7 is parallel to the central axis of the clamp channel 3;

[0041] A limiting card slot 9 is also provided along the central axis of the limiting plate 7. The limiting card slot 9 extends to a side away from the pushing component 8 and passes through the limiting plate 7. The width of the limiting card slot 9 is greater than the diameter of the double J tube indwelling in the human bladder. Baffles 10 are also provided on both sides of the limiting card slot 9.

[0042] The baffle plate 10 is inclined toward the bottom of the limiting slot 9, and the spacing width between the ends of the two baffle plates 10 is smaller than the diameter of the double J tube placed in the human bladder. A spring pin 11 is also provided in the slot body of the limiting slot 9, and the end of the spring pin 11 abuts against the baffle plate 10. When the double J tube enters the positioning slot and moves to the bottom of the slot, the double J tube squeezes the baffle plate 10 to shrink the spring pin 11, so that the double J tube can pass through the baffle plate 10.

[0043] Using the cystoscope capable of accurately locating the position of the double J tube described in the present invention, during the removal operation of the double J tube, after the operating section 4 enters the human bladder, the limiting plate 7 is pushed out of the end of the operating section 4, and then the mirror body 2 is pushed to move toward the curled end position of the double J tube in the human bladder, so that the double J tube enters the limiting card slot 9. After the double J tube passes through the baffle 10, the mirror body 2 is pulled to move backward. During this process, the double J tube passes through the limiting card slot 9 section on the lower side of the baffle 10, and the length of the double J tube above the limiting plate 7 is gradually shortened, so that the originally curled end of the double J tube It can be gradually stretched, and the end of the double J tube can be exposed on the surface of the limiting plate 7, so that the sampling forceps can easily clamp the end of the double J tube, avoiding the folding of the double J tube when passing through the clamp channel 3, resulting in increased resistance of the double J tube passing through the clamp channel 3, and improving the convenience of removing the double J tube; moreover, the present invention avoids the double J tube from forming a folded state when passing through the clamp channel 3, and can also eliminate the situation where the pulling resistance increases when the double J tube passes through the clamp channel 3, so that medical staff can more accurately judge the state of the double J tube passing through the human ureter, reducing the risk of ureteral damage to patients during the double J tube removal operation.

[0044] Specifically, in the present embodiment, the pushing component 8 comprises a micro hydraulic telescopic rod, and the micro hydraulic telescopic rod comprises a hydraulic cylinder and a telescopic rod body. A hydraulic channel is provided in the mirror body 2 and communicates with the hydraulic cylinder. A return spring is also provided in the hydraulic cylinder, and the return spring is connected to the telescopic rod body. In actual use, a syringe is used to push physiological saline into the hydraulic channel, and the pressure in the hydraulic cylinder increases, and then the telescopic rod body extends from the hydraulic cylinder under the action of the hydraulic thrust, and the telescopic rod body pushes the limit plate 7 to make it extend out of the end of the operating section 4. The syringe is used to draw out the physiological saline in the hydraulic cylinder, and the pressure in the hydraulic cylinder decreases. The return spring contracts to pull the telescopic rod body back into the hydraulic cylinder, thereby realizing the retraction of the limit plate 7.

[0045] In the removal operation of the double J tube, after the operating section 4 is extended into the human bladder, the position of the double J tube is located by using the imaging system 17, and the limiting plate 7 is pushed out of the end of the operating section 4, and then the mirror body 2 is pushed to move toward the curled end of the double J tube in the human bladder. During this process, the double J tube enters the limiting card slot 9, and the double J tube moves toward the bottom of the limiting card slot 9. When the double J tube reaches the position of the baffle 10, the double J tube applies pressure on the baffle 10, and the baffle 10 squeezes the spring column pin 11 to compress it, thereby increasing the spacing distance between the ends of the baffle 10, and the double J tube can pass through the baffle 10 smoothly; when the double J tube passes through the After the baffle plate 10, the spring pin 11 extends and pushes the baffle plate 10, so that the spacing distance between its ends is reduced, preventing the double J tube from moving into the segment of the limiting slot 9 above the baffle plate 10; when the double J tube is located in the segment of the limiting slot 9 below the baffle plate 10, the mirror body 2 is pulled to move it toward the outside of the body, and the double J tube passes through the limiting slot 9 at this time, and the length of the double J tube above the limiting plate 7 is gradually shortened, and the originally curled end of the double J tube can gradually stretch, and the end of the double J tube can be exposed on the surface of the limiting plate 7, so that the sampling forceps can easily clamp the end of the double J tube, preventing the double J tube from folding when passing through the clamp channel 3.

[0046] Example 2: Figure 3 and Figure 4 As shown, a cystoscope capable of accurately locating the position of a double J tube described in the present invention, based on the above method, further divides the limiting slot 9 into a first slot section 12 and a second slot section 13 with the baffle 10 as a dividing line, the first slot section 12 is arranged on the slot mouth side of the limiting slot 9, the second slot section 13 is arranged on the slot bottom side of the limiting slot 9, the first slot section 12 is arranged in a trumpet shape, and the second slot section 13 is arranged in a circular ring shape.

[0047] In this embodiment, the first groove section 12 is set to a trumpet shape, which can make the double J tube easier to enter the limit slot 9, thereby improving the ease of use and practicality of the present invention in actual use. Further, in this embodiment, the end of the limit plate 7 is set to a rounded structure. This structural setting can reduce the risk of the limit plate 7 causing damage to the bladder mucosa when it contacts the human bladder.

[0048] Example 3: Figures 3 to 6 As shown, a cystoscope capable of accurately locating the position of a double J tube according to the present invention is further provided with a guide plate 14 on the basis of the above-mentioned method, and the guide plate 14 is arranged on one side of the pushing component 8, and the end of the guide plate 14 is spaced apart from the bottom of the second groove section 13, the central axis of the guide plate 14 coincides with the central axis of the limiting plate 7, and the guide plate 14 and the limiting plate 7 have a first matching form and a second matching form, and when the connecting portion between the guide plate 14 and the limiting plate 7 extends out of the end of the operating section 4, the guide plate 14 and the limiting plate 7 are connected. A first matching form is formed between the limit plates 7, the central axis of the guide plate 14 forms an acute angle with the central axis of the limit slot 9, and when the first matching form is formed between the guide plate 14 and the limit plate 7, the curled section of the double J tube that slides into the second slot section 13 is located within the range of the guide plate 14; when the connecting portion between the guide plate 14 and the limit plate 7 is retracted into the accommodating cavity inside the operating section 4, the guide plate 14 gradually approaches the surface of the limit plate 7 under the action of the extrusion force, and finally fits with the surface of the limit plate 7, thereby forming a second matching form between the guide plate 14 and the limit plate 7.

[0049] Specifically, in this embodiment, the mirror body 2 is pushed to move toward the curled end position of the double J tube in the human bladder so that the double J tube enters the limiting card slot 9. The extended length of the limiting plate 7 does not exceed the range of the guide plate 14, thereby avoiding the guide plate 14 blocking the imaging system 17; when the double J tube enters the second groove section 13, the limiting plate 7 is completely pushed out by the pushing component 8, and the limiting plate 7 and the guide plate 14 form a first matching form. At this time, the curled segment of the double J tube can fall within the range of the guide plate 14, and the imaging system 17 is pulled. In the process of moving the mirror body 2 toward the outside of the body, the double J tube gradually stretches, and finally the end of the double J tube is exposed on the guide plate 14, so that the end of the double J tube is away from the second groove section 13, reducing the risk of the double J tube end accidentally slipping out of the second groove section 13, and further improving the practicality of the present invention in actual use; further, adopting this structural setting, the end of the double J tube can be exposed earlier, thus reducing the distance that the mirror body 2 retreats toward the outside of the body, thereby reducing the risk of damage caused by the mirror body 2 rubbing against the human urethra;

[0050] Furthermore, in this embodiment, the guide plate 14 is provided to amplify the pressure exerted on the guide plate 14 by the bending deformation of the double J tube itself, and thus the release amount of the bending deformation of the double J tube can be increased under the condition of unit displacement. In this way, on the one hand, the double J tube can form a better stretch, so that the sampling forceps can clamp the end of the double J tube more accurately; on the other hand, it can also further accelerate the exposure of the end of the double J tube, thereby reducing the distance that the mirror body 2 retreats out of the body, and reducing the risk of damage caused by the mirror body 2 rubbing against the human urethra;

[0051] It should be noted in the present embodiment that, during the stretching process of the double J, since the double J tube itself always has a tendency to bend and deform, it will always abut against the end of the guide plate 14 and / or abut against the surface of the guide plate 14, thereby ensuring that the end of the double J tube will always be exposed on the guide plate 14.

[0052] As a preferred implementation scheme, based on the above-mentioned method, further, the width of the guide plate 14 is smaller than the width of the limiting plate 7 , and stop blocks 16 are provided on both sides of the end of the guide plate 14 .

[0053] In the present embodiment, it is taken into consideration that the orientations of the curled segments of the double J tubes retained in the human bladder may be different. When the curled segments of the double J tubes are biased toward the left or right side of the central axis of the ureter, the ends of the double J tubes may fall outside the two side edges of the guide plate 14 when the tubes are in a stretched state. Thus, when the mirror body 2 is pulled outside the body, the double J tubes are prone to slip off the guide plate 14. Based on this, in the present embodiment, the stop blocks 16 are provided on both sides of the ends of the guide plate 14. When the double J tubes are in a stretched state, the ends of the double J tubes gradually slide along the two side edges of the guide plate 14 to the stop blocks 16. Under the action of the bending deformation force of the double J tubes themselves, the ends of the double J tubes hook the stop blocks 16, thereby preventing the double J tubes from slipping off the guide plate 14, thereby further improving the practicality of the present invention in actual use.

[0054] Example 4: Figure 3 and Figure 4 As shown, the cystoscope capable of accurately locating the position of a double J tube described in the present invention is based on the above method, and further, a hanging groove 15 is further provided at the end of the guide plate 14, and the hanging groove 15 passes through the guide plate 14, and the notch of the hanging groove 15 faces the side of the guide plate 14, and the width of the hanging groove 15 is greater than the diameter of the double J tube placed in the human bladder.

[0055] In this embodiment, it is considered that the curling direction of the double J tube indwelling in the human bladder may deviate from the guide plate 14. At this time, the pressure generated by the bending deformation tendency of the double J tube itself cannot act on the guide plate 14, and then when the double J tube is in a stretched state, the end of the double J tube will gradually move away from the guide plate 14 and cannot be exposed on the surface of the guide plate 14; based on this, in this embodiment, the hanging groove 15 is provided at the end of the guide plate 14, and after the guide plate 14 and the limiting plate 7 form a first matching shape, the double J tube is guided into the hanging groove 15 by using a sampling forceps, or the mirror body 2 is horizontally rotated to guide the double J tube into the hanging groove 15, and then the mirror body 2 is pulled to make it out of the body. The double J tube gradually stretches and eventually the end of the double J tube is exposed in the position of the hanging groove 15. Moreover, in the present embodiment, when the curling direction of the double J tube placed in the human bladder is toward the guide plate 14, the hanging groove 15 can clamp the end of the double J tube, thereby further reducing the risk of the double J tube accidentally slipping off the guide plate 14. On the other hand, in the present embodiment, after the double J tube is clamped in the hanging groove 15, the pushing component 8 is used to pull the limit plate 7 to shrink it back to the inside of the operating section 4. During this process, the guide plate 14 gradually moves closer to the limit plate 7, and the guide plate 14 applies pressure to the double J tube body, thereby further accelerating the release of the bending deformation of the double J tube.

[0056] As a preferred embodiment, based on the above method, further, the notch of the hanging groove 15 is arranged corresponding to the central axis of the guide plate 14. With this structural arrangement, the convenience of the double J tube entering the hanging groove 15 can be improved.

[0057] As a preferred embodiment, based on the above manner, further, the side wall of the hanging groove 15 away from the end of the guide plate 14 is inclined, and the other side wall is horizontally arranged, so that the bottom width of the hanging groove 15 is greater than the width of the groove opening. With this structural arrangement, when the mirror body 2 is pulled to move toward the outside of the body, the risk of the double J tube accidentally slipping out of the hanging groove 15 can be reduced, thereby further improving the practicality of the present invention in actual use.

[0058] As a preferred embodiment, based on the above method, further, the inner wall of the hanging groove 15 is set to a rough surface. With this structural setting, the risk of the double J tube accidentally slipping out of the hanging groove 15 is further reduced.

[0059] As a preferred embodiment, based on the above method, further, the width of the end of the guide plate 14 from the horizontal side wall of the hanging groove 15 is greater than the diameter of the double J tube indwelling in the human bladder. With this structural setting, under the pressure generated by the bending deformation tendency of the double J tube itself, its end can abut against the area above the horizontal side wall of the hanging groove 15, which makes it easier to clamp the sampling forceps, and further improves the practicality of the present invention in actual use.

[0060] As a preferred embodiment, on the basis of the above-mentioned manner, further, the limit plate 7 and the guide plate 14 are both set to be arc-shaped structures, and the inner diameter of the limit plate 7 is matched with the outer diameter of the guide plate 14. With this structural setting, the double J tube can better limit the curled segment of the double J tube to the limit plate 7 or to the guide plate 14 during the process of forming the stretched state, thereby further improving the practicality of the present invention in actual use; and the limit plate 7 and the guide plate 14 with arc-shaped structures can also limit the path of the sampling forceps to extend, thereby improving the accuracy of the sampling forceps to clamp the double J tube.

[0061] As a preferred implementation scheme, based on the above-mentioned method, further, the length of the limiting slot 9 is less than 1 / 3 of the length of the limiting plate 7 .

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cystoscope capable of accurately locating the position of a double J tube, characterized in that: The scope comprises a handle and a body, wherein the body has an internal end and an external end, the handle is arranged at the external end of the body, and the handle is used for an operator to hold; a forceps channel is arranged in the body, the forceps channel runs through the body, and the forceps channel is used to form a channel for the sampling forceps to enter the human body; the body comprises an operating section and a main scope tube section, the operating section is used to extend into the human bladder, and an imaging system for taking images is arranged at the end of the operating section; A tube clamping assembly is also provided in the operating section, and the tube clamping assembly includes a limit plate and a pushing component, wherein the limit plate is connected to the pushing component, and the pushing component is used to push the limit plate to make it extend out of the end of the operating section, and the clamp channel is provided above the limit plate, and the central axis of the limit plate is parallel to the central axis of the clamp channel; A limiting card slot is also provided along the central axis of the limiting plate, the limiting card slot extends to a side away from the pushing component and passes through the limiting plate, the width of the limiting card slot is greater than the diameter of the double J tube indwelling in the human bladder, and baffles are also provided on both sides of the limiting card slot body. The baffle is inclined toward the bottom of the position-limiting slot, the width of the interval between the ends of the two baffles is smaller than the diameter of the double J tube indwelling in the human bladder, a spring pin is also provided in the position-limiting slot, the end of the spring pin abuts against the baffle, when the double J tube enters the position-limiting slot and moves to the side of the bottom of the slot, the double J tube squeezes the baffle to shrink the spring pin, and then the double J tube can pass through the baffle; The baffle plate is used as a dividing line to divide the limit slot into a first slot section and a second slot section, the first slot section is arranged on one side of the slot opening of the limit slot, and the second slot section is arranged on one side of the slot bottom of the limit slot, the first slot section is arranged in a trumpet shape, and the second slot section is arranged in a circular ring shape; The limit plate is also provided with a guide plate, which is arranged on one side of the pushing component, and the end of the guide plate is spaced from the bottom of the groove of the second groove section, and the central axis of the guide plate coincides with the central axis of the limit plate, and the guide plate and the limit plate have a first matching form and a second matching form, when the connecting part of the guide plate and the limit plate extends out of the end of the operating section, the first matching form is formed between the guide plate and the limit plate, the central axis of the guide plate and the central axis of the limit slot form an acute angle matching, and when the first matching form is formed between the guide plate and the limit plate, the curling section of the double J tube sliding into the second groove section is within the range of the guide plate; when the connecting part of the guide plate and the limit plate is retracted into the accommodating cavity inside the operating section, the guide plate gradually approaches the surface of the limit plate under the action of the extrusion force, and finally fits with the surface of the limit plate, thereby forming a second matching form between the guide plate and the limit plate.

2. The cystoscope capable of accurately locating the position of the double J tube according to claim 1, characterized in that: The width of the guide plate is smaller than the width of the limiting plate, and stop blocks are arranged on both sides of the end of the guide plate.

3. The cystoscope capable of accurately locating the position of the double J tube according to claim 2, characterized in that: The end of the guide plate is also provided with a hanging groove, which passes through the guide plate, with the notch of the hanging groove facing the side of the guide plate, and the width of the hanging groove is greater than the diameter of the double J tube indwelling in the human bladder.

4. The cystoscope capable of accurately locating the position of the double J tube according to claim 3, characterized in that: The notch of the hanging slot is arranged corresponding to the central axis of the guide plate.

5. The cystoscope capable of accurately locating the position of the double J tube according to claim 4, characterized in that: The side wall of the hanging groove away from the end of the guide plate is inclined, and the other side wall is horizontally arranged, so that the groove bottom width of the hanging groove is greater than the width of the groove opening.

6. The cystoscope capable of accurately locating the position of the double J tube according to any one of claims 3 to 5, characterized in that: The inner wall of the hanging groove is configured as a rough surface.

7. The cystoscope capable of accurately locating the position of the double J tube according to claim 6, characterized in that: The width of the end of the guide plate from the horizontal side wall of the hanging groove is greater than the diameter of the double J tube indwelling in the human bladder.

8. The cystoscope capable of accurately locating the position of the double J tube according to claim 7, characterized in that: The limiting plate and the guide plate are both configured as arc-shaped structures, and the inner diameter of the limiting plate is matched with the outer diameter of the guide plate.

Images