Ureteroscope convenient for detecting urinary calculus

Abstract

The utility model relates to a ureteroscope convenient for detecting urinary calculus. The ureteroscope comprises a ureteroscope body and a ureteroscope body, one end of the endoscope body is connected with the endoscope body, and the other end is provided with a bent detection tube; and a control handle for controlling the bent detection tube is also arranged on one side of the endoscope body. The ureteroscope convenient for detecting the urinary calculus has the advantages that the bent detection tube is bent through the control handle, and compared with a traditional flexible ureteroscope, the ureteroscope convenient for detecting the urinary calculus has a larger bendable range, is convenient for entering each renal calyx, and eliminates a view blind area and an operation blind area of a hard ureteroscope. And the bending direction and angle of the tail end of the mirror body are controlled by an operating rod on a control handle behind the mirror body. The novel ureteroscope has the advantages of a traditional hard ureteroscope and a traditional soft ureteroscope, is convenient to operate, has no view blind area and operation blind area, enables the view under the ureteroscope to be clearer, enables the quality of diagnosis and treatment of upper urinary tract diseases to be greatly improved, and is good in clinical application prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and specifically, it is a ureteroscope that is convenient for detecting urinary calculi. Background Technique

[0002] A ureteroscope is an endoscope that uses special instruments to perform diagnosis and disease treatment in the upper urinary tract of the urinary system. It does not require large incisions in the human body, significantly reduces tissue damage, thus accelerating the body's recovery, shortening the treatment course, improving the curative effect, and is an important development in endoscope technology. Its clinical application has changed the traditional concept that it has been difficult to perform direct examinations in the ureter, renal pelvis and calyces for a long time and open surgery has to be performed for upper urinary tract diseases. Currently, the ureteroscopes in use are divided into two categories: rigid ureteroscopes and flexible ureteroscopes. In specific surgical operations, when the calculi are widely distributed or located secretly, there are certain limitations. For example, for calculi located in multiple renal calyces or calculi in the upper segment of the ureter at a relatively far distance from the UPJ (ureteropelvic junction), the ureteroscope needs to swing at a large angle or turn multiple times to detect the calculi. An overly large swing angle causes tearing of the punctured renal calyx, resulting in bleeding during and after the operation; another example is that the calculi are located in the parallel renal calyces of the punctured renal calyx. At this time, the rigid renal endoscope cannot deflect 180° to detect the calculi. Using a flexible cystoscope. Because the whole body of the flexible cystoscope is flexible, a rigid endoscope needs to be used to pre-fix the sheath tube channel to the target renal calyx first, and then the flexible cystoscope is replaced to enter the target renal calyx. However, the puncture sheath tube is also mostly flexible, and the fixing effect is poor; after lithotripsy, it is necessary to replace the rigid renal endoscope again to flush the calculi out of the body. Repeatedly replacing the endoscope equipment destroys the continuity of the operation and prolongs the operation time.

[0003] Chinese patent document CN200610152517.8, with the invention name of "retractable and bendable ureteroscope at the end", publication number CN101152074A, discloses a ureteroscope. Its endoscope body is a rigid structure, but the end of the endoscope body is designed to be the same as the end of the traditional flexible ureteroscope, and can bend 0-180° in two opposite directions. And before the ureteroscope reaches the renal pelvis or the affected part, the flexible end of the endoscope body is completely immersed in the rigid endoscope body; when performing diagnostic or treatment operations, the flexible end of the endoscope body extends out of the rigid endoscope body and bends through the control handle.

[0004] The problems existing in the above patent document are: the end of the endoscope body has to be completely immersed in the rigid endoscope body, which directly affects the setting and arrangement of the original light guide beam, inlet pipeline, etc. inside the rigid endoscope body, and there is no specific technical solution for controlling the bending angle of the flexible end of the endoscope body.

[0005] To sum up, there is an urgent need for a ureteroscope with a bendable end and adjustable bending angle, which is convenient for detecting the position of calculi, and there is no report on this kind of ureteroscope at present. Summary of the Invention

[0006] The object of the present utility model is to provide a ureteroscope with a bendable end that can be adjusted in bending angle to facilitate detecting the location of stones.

[0007] To achieve the above object, the technical solution adopted by the present utility model is:

[0008] A ureteroscope for facilitating the detection of urinary stones, the ureteroscope comprising a mirror body and a lens body; one end of the lens body is connected to the mirror body, and the other end is provided with a bendable detection tube; a control handle for controlling the bendable detection tube is further provided on one side of the mirror body;

[0009] The bendable detection tube includes a protective sleeve and a bending mechanism; the bending mechanism includes an inner sleeve, a pulling strip, and a bending snake bone member; the bending snake bone member includes an annular piece, and the bending snake bone member is composed of a plurality of annular pieces; one end of the bending snake bone member is provided with an end annular seat, and the other end is provided with a fixing sleeve, and the fixing sleeve is connected to the lens body; the pulling strip is passed through the annular piece; one end of the inner sleeve is connected to the lens body, and the other end is connected to the end annular seat; one end of the pulling strip is fixed to the end annular seat, and the other end is connected to the control handle, and the pulling strip passes through the lens body and the mirror body in sequence and is fixedly connected to the control handle; the protective sleeve is externally connected to the outer periphery of the annular piece, and one end of the protective sleeve is connected to the lens body, and the other end is connected to the end annular seat; the control handle controls the bending of the bending snake bone member;

[0010] As a preferred technical solution, the control handle includes a first connection disk and a second connection disk; a rotating column is provided on the first connection disk; a rotating cavity is provided on the second connection disk; the rotating column and the rotating cavity are connected by an active hinge; the pulling strip is connected between the first connection disk and the second connection disk; a rotating rod is provided on the first connection disk; when the rotating rod swings to one side, the pulling strip exerts a pulling effect on the bending snake bone member, so that the bendable detection tube bends.

[0011] As a preferred technical solution, the annular pieces are linearly distributed on the inner sleeve; at least one pulling strip is passed through each annular piece.

[0012] As a preferred technical solution, a card slot for fixing the pulling strip is provided on the outer periphery of the end annular seat; an outer connecting tube connected to the protective sleeve and an inner connecting tube matched with the inner sleeve are provided at one end of the end annular seat.

[0013] As a preferred technical solution, the inner sleeve, the annular piece, and the outer connecting tube are all made of elastic materials.

[0014] As a preferred technical solution, instrument channel openings are provided on the lens body, the mirror body, the inner sleeve, and the end annular seat; pulling holes are provided on both the mirror body and the lens body; the instrument channel openings and the pulling holes are independent of each other.

[0015] As a preferred technical solution, there are four pulling strips, and the pulling strips are made of flexible metal materials.

[0016] As a preferred technical solution, pulling holes for connecting the pulling strips are provided on the annular sheet, which facilitates connecting the annular sheets together by the pulling strips; the connection between the annular sheet and the inner sleeve is an interference fit connection method.

[0017] The advantages of the present utility model are as follows:

[0018] 1. A ureteroscope for facilitating the detection of urinary calculi according to the present utility model bends the bending detection tube through a control handle, has a larger bendable range than traditional flexible ureteroscopes, is convenient for entering each renal calyx, and eliminates the visual field blind area and operation blind area of rigid ureteroscopes. The direction and angle of the bending movement of the end of the mirror body are controlled by the operating rod on the control handle behind it. Using this new type combines the advantages of traditional rigid ureteroscopes and flexible ureteroscopes, is convenient for operation, has no visual field blind area and operation blind area, and the visual field under the mirror is clearer, greatly improving the quality of the diagnosis and treatment of upper urinary tract diseases.

[0019] 2. A bending snake bone part is arranged in the bending detection tube, so that the bending detection tube can be bent and has a suitable bending angle and bending radius, and can be smoothly inserted from the bladder into the ureter and can detect the position of ureteral calculi from multiple angles.

[0020] 3. The bending mechanism is designed with reference to the principle of snake-shaped bending, and is composed of multiple annular sheets, and pulling strips are inserted through the annular sheets, which is equivalent to establishing multiple pulling points, realizing flexible bending, adjustable bending degree, and facilitating timely detection of the position where the calculus is located.

[0021] 4. Through the pulling strips, a framework is established for the annular sheets, and the bending shape of the bending snake bone part can be realized by controlling the pulling strips; by arranging the inner sleeve, on the one hand, it is convenient to support the annular sheets, and at the same time has a guiding function and is convenient for insertion. If there is no inner sleeve design, the entire bending snake bone part has no direction guiding function, is not convenient for implantation in the ureter, and affects its visual field blind area. Through the setting of the fixing sleeve design, the connection of the mirror body is fixed, preventing the problem that the connection between the mirror body and the bending part of some ureteroscopes in the prior art is unstable and affects stone extraction. By arranging the end annular seat, on the one hand, it is convenient to provide an installation position for other components of the ureteroscope, and on the other hand, it provides a fixed point for the pulling strips.

[0022] 5. A control handle is provided and is disposed on one side of the mirror body. In the use state, it can be controlled outside the body to bend the bending detection tube inserted into the body, and the controllability is good.

[0023] 6. The first connection disk of the control handle is provided with a rotation cavity, and the second connection disk is also provided with a rotation cavity. The rotating column is hinged with the rotation cavity and has a certain degree of freedom of movement. One end of the pulling bar is fixed on the first connection disk. When the control rod is used to control the first connection disk to swing relative to the second connection disk, the pulling bar is pulled, so as to better achieve bending. Description of the Drawings

[0024] Att Figure 1 is a schematic structural diagram of a ureteroscope for facilitating the detection of urinary calculi according to the present invention. Att Figure 2 is a partial disassembly schematic diagram of a ureteroscope for facilitating the detection of urinary calculi according to the present invention.

[0025] Att Figure 3 is a schematic structural diagram of the bending detection tube.

[0026] Att Figure 4 is a partially enlarged schematic structural diagram of the bending mechanism.

[0027] Att Figure 5 is a schematic structural diagram of the end annular seat.

[0028] Att Figure 6 is a schematic structural diagram of the control handle.

[0029] Att Figure 7 is a schematic cross-sectional view of the mirror body. Detailed Embodiment

[0030] The present invention will be further described below in conjunction with the embodiments and with reference to the drawings.

[0031] The reference numerals and components involved in the drawings are as follows:

[0032] 1. Mirror body 2. Mirror body

[0033] 3. Bending detection tube 31. Protective sleeve

[0034] 32. Bending mechanism 321. Inner sleeve

[0035] 322. Pulling bar 323. Bending snake bone part

[0036] 3231. Annular piece 3232. End annular seat

[0037] 3233. Fixed sleeve 32321. Card slot

[0038] 32322. Outer connecting tube 32323. Inner connecting tube

[0039] 4. Control handle 41. First connecting disk

[0040] 42. Second connecting disk 411. Rotating column

[0041] 421. Rotating cavity 412. Rotating rod

[0042] 5. Instrument channel opening 6. Light source opening

[0043] 7. Eyepiece opening 8. Traction hole

[0044] Embodiment 1

[0045] Please refer to Figures 1-4 , Figure 1 which is a schematic structural view of a ureteroscope for facilitating the detection of urinary calculi according to the present utility model. Figure 2 which is a partial disassembly schematic view of a ureteroscope for facilitating the detection of urinary calculi according to the present utility model, Figure 3 which is a schematic structural view of the bending detection tube 3. A ureteroscope for facilitating the detection of urinary calculi. The ureteroscope includes a mirror body 1 and a lens body 2; one end of the lens body 2 is connected to the mirror body 1, and the other end is provided with a bending detection tube 3; the mirror body 1 is provided with an eyepiece opening 7, a light source opening 6 and an instrument channel opening 5; a control handle 4 for controlling the bending detection tube 3 is further provided on one side of the mirror body 1. Figure 4

[0046] The bending detection tube 3 includes a protective sleeve 31 and a bending mechanism 32; the bending mechanism 32 includes an inner sleeve 321, a traction strip 322 and a bending snake bone member 323; the bending snake bone member 323 includes an annular piece 3231, and the bending snake bone member 323 is composed of a plurality of annular pieces 3231; one end of the bending snake bone member 323 is provided with an end annular seat 3232, the other end is provided with a fixing sleeve 3233, and the fixing sleeve 3233 is connected to the lens body 2; the traction strip 322 is passed through the annular piece 3231; one end of the inner sleeve 321 is connected to the lens body 2, and the other end is connected to the end annular seat 3232; one end of the traction strip 322 is fixed to the end annular seat 3232, the other end is connected to the control handle 4, and the traction strip 322 is sequentially passed through the lens body 2 and the mirror body 1 and then fixed to the control handle 4; the protective sleeve 31 is externally connected to the outer periphery of the annular piece 3231, and one end of the protective sleeve 31 is connected to the lens body 2 and the other end is connected to the end annular seat 3232; the control handle 4 controls the bending of the bending snake bone member 323.

[0047] ​The described annular pieces 3231 are linearly distributed on the inner sleeve 321; at least one pulling strip 322 is threaded through each annular piece 3231.

[0048] Please refer to Figure 5 , Figure 5 is a schematic structural view of the end annular seat 3232. A clamping groove 32321 for fixing the pulling strip 322 is provided on the outer periphery of the end annular seat 3232; an outer connecting pipe 32322 connected to the protective sleeve 31 and an inner connecting pipe 32323 matched with the inner sleeve 321 are provided at one end of the end annular seat 3232.

[0049] Please refer to Figure 6 , Figure 6 is a schematic structural view of the control handle 4. The control handle 4 includes a first connection disk 41 and a second connection disk 42; a rotating column 411 is provided on the first connection disk 41; a rotating cavity 421 is provided on the second connection disk 42; the rotating column 411 and the rotating cavity 421 are connected by an active hinge method; the pulling strip 322 is connected between the first connection disk 41 and the second connection disk 42; a rotating rod 412 is provided on the first connection disk 41; when the rotating rod 412 swings to one side, the pulling strip 322 exerts a pulling effect on the bent snake bone member 323, so that the bent detection tube 3 is bent.

[0050] It should be noted in this embodiment that:

[0051] The inner sleeve 321, the annular pieces 3231, and the outer connecting pipe 32322 are all made of elastic materials.

[0052] Instrument channel openings 5 are provided on the lens body 1, the lens body 2, the inner sleeve 321, and the end annular seat 3232; pulling holes 8 are provided on both the lens body 2 and the lens body 1 (see Figure 7 ); the instrument channel openings 5 and the pulling holes 8 are independent of each other.

[0053] As a preference, there are four pulling strips 322, and the pulling strips 322 are made of flexible metal materials.

[0054] Pulling holes 8 for connecting the pulling strips 322 in series are provided on the annular pieces 3231, which facilitates the pulling strips 322 to connect the annular pieces 3231 together. The connection between the annular pieces 3231 and the inner sleeve 321 is an interference fit connection method.

[0055] A micro camera is also provided on the end annular seat 3232. After converting the captured image into an electrical signal, the micro camera enters the light source and imaging integration system through the internal cable. The video signal output by this system is displayed on an external display device.

[0056] It should be noted in this embodiment that:

[0057] One end of the lens body 2 is connected to the lens body 1, and the other end is provided with a bending detection tube 3; a control handle 4 for controlling the bending detection tube 3 is also provided on one side of the lens body 1. The effects of this design are as follows: By bending the bending detection tube 3 through the control handle 4, on the one hand, during insertion, it can smoothly fit the physiological structure channel, facilitating smooth insertion; on the other hand, by bending the bending detection tube 3 through the control handle 4, the visual field blind area and operation blind area of the rigid ureteroscope are eliminated, and the position of the stone can be quickly and accurately detected, solving the problem that the rigid ureteroscope cannot bend to detect stones; at the same time, it has a larger bendable range than the traditional flexible ureteroscope, facilitating entry into each renal calyx, and having the ability to detect stones from multiple angles, solving the problem of stone residue due to unclear angles in the prior art when using a flexible ureteroscope to remove stones.

[0058] The bending detection tube 3 includes a protective sleeve 31 and a bending mechanism 32; the bending mechanism 32 includes an inner sleeve 321, a pulling strip 322, and a bending snake bone member 323; the bending snake bone member 323 includes an annular piece 3231, and the bending snake bone member 323 is composed of several annular pieces 3231. The effects of this design are as follows: The bending mechanism 32 is designed with reference to the principle of snake-shaped bending and is composed of several annular pieces 3231. The pulling strip 322 is threaded through the annular piece 3231, which is equivalent to establishing multiple pulling points, realizing flexible bending with adjustable bending degree, facilitating timely detection of the position of the stone, and having a larger bendable range than the traditional flexible ureteroscope.

[0059] One end of the described curved snake bone member 323 is provided with an end annular seat 3232, and the other end is provided with a fixing sleeve 3233, and the fixing sleeve 3233 is connected to the lens body 2; a pulling strip 322 is passed through the annular piece 3231; one end of the inner sleeve 321 is connected to the lens body 2, and the other end is connected to the end annular seat 3232; one end of the pulling strip 322 is fixed to the end annular seat 3232, and the other end is connected to a control handle 4, and the pulling strip 322 passes through the lens body 2 and the lens body 1 in sequence and is fixedly connected to the control handle 4. The effect of this design is that: through the pulling strip 322, a framework is established for the annular piece 3231, and it is convenient to control the pulling strip 322 to realize the bending shape of the curved snake bone member 323; by providing the inner sleeve 321, on the one hand, it is convenient to support the annular piece 3231, and at the same time, it has a guiding function and is convenient for insertion. If there is no inner sleeve 321 design, the entire curved snake bone member 323 has no direction guiding function and is not convenient to implant in the ureter, affecting its visual blind area. Through the design of the fixing sleeve 3233, it realizes the fixing function at the connection of the lens body 2, preventing the problem that in the prior art, the connection between the lens body 2 of some ureteroscopes and the bending part is unstable, which affects stone extraction. By providing the end annular seat 3232, on the one hand, it is convenient to provide an installation position for other components of the ureteroscope, and on the other hand, it provides a fixed point for the pulling strip 322.

[0060] The described protective sleeve 31 is externally connected to the outer periphery of the annular piece 3231, and one end of the protective sleeve 31 is connected to the lens body 2, and the other end is connected to the end annular seat 3232. The effect of this design is that: through the design of the protective sleeve 31, it has a protective effect and prevents damage to the inner wall mucosa such as the ureter.

[0061] The described control handle 4 is arranged on the side of the lens body 1, without affecting the instrument operation end and the eyepiece operation end on the side of the lens body 1. As long as the pulling hole 8 of the lens body 1 is set to be independent and independent of the original instrument channel of the lens body 1, it is convenient to lead the pulling strip 322 into the control handle 4.

[0062] The described control handle 4 includes a first connection disk 41 and a second connection disk 42; a rotating column 411 is provided on the first connection disk 41; a rotating cavity 421 is provided on the second connection disk 42; the rotating column 411 and the rotating cavity 421 are connected by means of a movable hinge; a pulling bar 322 is connected between the first connection disk 41 and the second connection disk 42; a rotating rod 412 is provided on the first connection disk 41; when the rotating rod 412 swings to one side, the pulling bar 322 exerts a pulling effect on the bent snake bone member 323, so that the bent detection tube 3 is bent. The effect of this design is that the first connection disk 41 is provided with a rotating cavity 421, and the second connection disk 42 is provided with a rotating cavity 421, and the rotating column 411 and the rotating cavity 421 are hinged, having a certain degree of freedom of movement. One end of the pulling bar 322 is fixed on the first connection disk 41. When the rotating rod 412 controls the first connection disk 41 to swing relative to the second connection disk 42, a pulling effect is exerted on the pulling bar 322, so as to better achieve bending.

[0063] The principle of the control handle 4 controlling the bending of the bent detection tube 3 is as follows: The bent detection tube 3 is connected to the control handle 4 through the pulling bar 322. The control handle 4 end has a degree of freedom of swinging in four directions due to the movable hinge between the first connection disk 41 and the second connection disk 42. When swinging to one side, it will cause the pulling bar 322 to produce a pulling effect, and the distal end of the pulling bar 322 is connected to the bent snake bone member 323, and it can be bent with a slight pulling force. Therefore, the bending of the bent detection tube 3 is controlled by the control handle 4.

[0064] The described annular pieces 3231 are linearly distributed on the inner sleeve 321; the pulling bar 322 is at least one and is threaded through each annular piece 3231. The effect of this design is: Through the linear distribution method, the flexibility is good, which is conducive to consistent deformation and bending, that is, consistent bending in a certain direction.

[0065] A clamping groove 32321 for fixing the pulling bar 322 is provided on the outer periphery of the end annular seat 3232; one end of the end annular seat 3232 is provided with an outer connecting tube 32322 connected to the protective sleeve 31, and an inner connecting tube 32323 matched with the inner sleeve 321. The effect of this design is: Through the design of the clamping groove 32321, it is convenient to clamp and fix the end of the pulling bar 322 to prevent detachment. By providing the outer connecting tube 32322 on the end annular seat 3232, it is convenient to establish a fixed connection with the protective sleeve 31; by providing the inner connecting tube 32323 on the end annular seat 3232, it is convenient to establish a fixed connection with the inner sleeve 321. In this way, compared with the traditional ureteroscope, the cooperation between the inner sleeve 321 and the annular fixing seat also acts as the function of the lens body 2, thus not affecting the functions related to the ureteroscope.

[0066] The inner sleeve 321, the annular piece 3231, and the outer connecting tube 32322 are all made of elastic materials. The effect of this design is as follows: being made of elastic materials, on the one hand, it has good elasticity, enabling it to have a certain supporting and guiding effect in the ureter; on the other hand, when being controlled to bend through the pulling strip 322, it has good compliance and excellent bending performance. Because if it is not made of elastic materials, it is easy to break when being pulled by external forces, which is not conducive to controlling the bending degree. For example, if a rigid material is used, the angle may suddenly bend to a certain angle instead of achieving the bending of the angle through an asymptotic adjustment method.

[0067] Instrument channel openings 5 are provided on the lens body 1, the mirror body 2, the inner sleeve 321, and the end annular seat 3232; pulling holes 8 are provided on the mirror body 2 and the lens body 1; the instrument channel openings 5 and the pulling holes 8 are independent of each other. The effect of this design is: it does not affect the functions of the ureteroscope itself. For example, a laser fiber or a basket stone extractor can be inserted into the instrument channel opening 5; in addition, the pulling hole 8 is used for threading the pulling strip 322, and the pulling hole 8 is independent of the instrument channel opening 5 and does not interfere with each other.

[0068] Pulling holes 8 for connecting the pulling strips 322 in series are provided on the annular piece 3231, which is convenient for the pulling strip 322 to connect each annular piece 3231 together. The connection between the annular piece 3231 and the inner sleeve 321 is an interference fit connection method. The effect of this design is: each annular piece 3231 is provided with a pulling hole 8, enabling the pulling strip 322 to pass through each annular piece 3231. The interference fit method is adopted between the annular piece 3231 and the inner sleeve 321 to prevent the annular piece 3231 from detaching when being bent by force.

[0069] There are four pulling strips 322, and the pulling strips 322 are made of flexible metal materials. The effect of this design is: the pulling strips 322 are set to 4 and are distributed in the front, back, left, and right directions, facilitating the bending of the bending detection tube 3 in the front, back, left, and right directions.

[0070] An eyepiece port 7, a light source port 6, and an instrument channel opening 5 are provided on the lens body 1. The effect of this design is: it does not affect the settings and arrangements of the original light guide beam and the instrument channel opening 5 inside the rigid mirror body 2.

[0071] Working principle: A ureteroscope for facilitating the detection of urinary calculi according to the present utility model, in the use state, is first inserted through the urethra. When turning through the bladder and entering the ureter, in order to smoothly transition from the bladder to the ureter, the bending state of the bending detection tube 3 can be adjusted by rotating the control handle 4, so as to enter the ureter. When detecting the position of the calculi in the ureter, the bending state of the bending detection tube 3 is controlled again by the control handle 4, so as to accurately detect the position of the calculi. After the position of the calculi is determined, relevant instruments are implanted through the instrument channel to remove the calculi.

[0072] The above is only the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and supplements can be made, and these improvements and supplements should also be regarded as the protection scope of the present utility model.

Claims

1. A ureteroscope for detecting urinary stones, characterized in that: The ureteroscope comprises a mirror body and a mirror body; one end of the mirror body is connected to the mirror body, and the other end is provided with a bending detection tube; one side of the mirror body is also provided with a control handle for controlling the bending detection tube; The bending detection tube includes a protective sleeve and a bending mechanism; the bending mechanism includes an inner sleeve, a pulling strip, and a bending serpentine member; the bending serpentine member includes an annular sheet, and the bending serpentine member is composed of a plurality of annular sheets; an end annular seat is provided at one end of the bending serpentine member, and a fixing sleeve is provided at the other end, and the fixing sleeve is connected to the mirror body; a pulling strip is passed through the annular sheet; one end of the inner sleeve is connected to the mirror body, and the other end is connected to the end annular seat; one end of the pulling strip is fixed to the end annular seat, and the other end is connected to a control handle, and the pulling strip is passed through the mirror body and the rear of the mirror body in turn and is fixedly connected to the control handle; the protective sleeve is connected to the outer periphery of the annular sheet, and one end of the protective sleeve is connected to the mirror body, and the other end is connected to the end annular seat; the control handle controls the bending of the bending serpentine member.

2. The ureteroscope for detecting urinary stones according to claim 1, characterized in that: The control handle includes a first connecting plate and a second connecting plate; a rotating column is provided on the first connecting plate; a rotating cavity is provided on the second connecting plate; the rotating column and the rotating cavity are connected by a movable hinge; a pulling strip is connected between the first connecting plate and the second connecting plate; a rotating rod is provided on the first connecting plate; when the rotating rod swings to one side, the pulling strip pulls the bending snake bone, thereby causing the bending detection tube to bend.

3. The ureteroscope for facilitating detection of urinary stones according to claim 2, characterized in that: The annular sheets are linearly distributed on the inner sleeve; and at least one pulling strip is passed through each annular sheet.

4. The ureteroscope for facilitating detection of urinary stones according to claim 3, characterized in that: The outer periphery of the end annular seat is provided with a slot for fixing the pulling strip; one end of the end annular seat is provided with an outer pipe connected with the protective sleeve, and an inner pipe matched with the inner sleeve.

5. The ureteroscope for facilitating detection of urinary stones according to claim 4, characterized in that: The inner sleeve, the annular sheet and the outer pipe are all made of elastic materials.

6. The ureteroscope for facilitating detection of urinary stones according to any one of claims 1 to 5, characterized in that: The mirror body, the mirror body, the inner sleeve and the end annular seat are all provided with instrument passage openings; the mirror body and the mirror body are all provided with pulling holes; the instrument passage opening and the pulling hole are independent of each other.

7. The ureteroscope for detecting urinary stones according to claim 4, characterized in that: There are four pulling strips, and the pulling strips are made of flexible metal material.

8. The ureteroscope for facilitating detection of urinary stones according to claim 7, characterized in that: The annular sheet is provided with pulling holes for connecting the pulling strips in series, so that the pulling strips can connect the annular sheets together; the connection between the annular sheet and the inner sleeve is an interference fit connection.

Images