CN116019414A - Detachable ureteroscope - Google Patents

Abstract

The present invention relates to a detachable ureteroscope, the detachable ureteroscope comprises a guide, an outer sheath and an inner core, the outer sheath has an inner channel inside, the guide is adapted to pass through the inner channel Installed on the outer sheath, after the combination of the guide and the outer sheath is inserted into the kidney through the patient's ureter, the guide is withdrawn, and the inner core is inserted through the inner passage The patient's kidney, the inner core has a perfusion channel, the perfusion channel and the internal channel are independent of each other, and is suitable for realizing the crushing of the detachable ureteroscope in the patient's kidney through the perfusion channel and the internal channel. Stone, rinse and discharge stone. When the internal channel is blocked by crushed stones, the blockage problem can be solved only by pulling out the inner core.

Description

detachable ureteroscope

technical field

The invention relates to the technical field of medical devices, in particular to a detachable ureteroscope for treating kidney stones.

Background technique

In medical treatment, ureteroscopic surgery is the most common treatment for kidney stones. Ureteroscopic surgery uses a long and thin speculum to enter the kidney through the urethra, bladder, and ureter. With the help of an electronic monitoring system, the operator can clearly The stones produced in the kidney can be clearly observed, and these stones are crushed and sucked out of the body. The use of ureteroscopy can not only carry out the diagnosis and treatment of ureter and kidney diseases, but also greatly improve the diagnosis and treatment of ureter diseases, shorten the hospitalization time of patients, and reduce the treatment costs.

Ureteroscopes used in ureteral surgery are divided into rigid ureteroscopes and flexible ureteroscopes, which are very thin devices composed of light-guiding fibers and working lumens. It is mainly used to check the situation in the bladder and ureter and to treat the lesions in the ureter and kidney, and the common one is stone. It has the function of minimally invasiveness, replaces the traditional open surgery, and is currently widely used in urology. Rigid ureteroscopy can be used to treat stones in the bladder and middle and lower ureter through the urethra, while flexible ureteroscopy can be used to treat stones in the kidney through the urethra.

Traditional ureteroscopes mainly include guide wires, guide sheaths, visual mirrors, and lithotripsy fibers. When using traditional ureteroscopes to treat kidney stones, the guide wires are usually inserted blindly into the patient's kidneys, and then inserting a guide sheath along the guide wire, and then inserting a visual mirror and a lithotripsy fiber through the channel inside the guide sheath to carry out visible lithotripsy, and using the channel inside the guide sheath to perform perfusion and row of stones. However, in traditional ureteroscopes, because the guide sheath cannot enter the kidney, the suction port is far away from the lithotripsy point, the stone removal is not clean, the efficiency of stone removal is low, and the suction required is relatively large. At the same time, because the passage inside the traditional ureteroscope is used for stone removal and equipment, the passage for stone removal is relatively small and easily blocked during stone removal.

Contents of the invention

One advantage of the present invention is to provide a detachable ureteroscope, the detachable ureteroscope includes an outer sheath and an inner core, the outer sheath and the inner core adopt a combined structure, so that the inner core can be Withdraw to avoid clogging with stones.

Another advantage of the present invention is to provide a detachable ureteroscope. The detachable ureteroscope utilizes the outer sheath to actively turn to drive the inner core to passively turn, so that the outer sheath and the inner core move synchronously , is conducive to stone removal.

Another advantage of the present invention is to provide a detachable ureteroscope. The detachable ureteroscope utilizes the outer sheath to actively turn to drive the inner core to passively turn, so that the outer sheath and the inner core move synchronously , Gravel and stone discharge can be carried out at the same time.

Another advantage of the present invention is to provide a detachable ureteroscope. The detachable ureteroscope utilizes the outer sheath to actively turn to drive the inner core to passively turn, so that the outer sheath and the inner core move synchronously , The crushed stones can be discharged immediately without gravel deposition.

One advantage of the present invention is to provide a detachable ureteroscope. The detachable ureteroscope uses the inner core to crush stones and flush water, and uses the outer sheath to discharge stones. The speed is greatly improved.

Another advantage of the present invention is to provide a detachable ureteroscope, the multiple channels inside the detachable ureteroscope will not interfere with each other, which can effectively prevent blockage.

Another advantage of the present invention is to provide a detachable ureteroscope. The detachable ureteroscope adopts a suitable ratio of the suction channel and the perfusion channel, so that the stone expulsion efficiency is high and blockage is not easy.

Another advantage of the present invention is to provide a detachable ureteroscope, the detachable ureteroscope uses the outer sheath to actively turn to drive the inner core to turn passively, so that the distance between the suction port and the stone breaking point is relatively close , the required stone removal attraction is small.

Another advantage of the present invention is to provide a detachable ureteroscope, the inner core of the detachable ureteroscope is rotatable, and can crush stones in "tricky" parts.

Another advantage of the present invention is to provide a detachable ureteroscope. The detachable ureteroscope uses the outer sheath to actively turn to drive the inner core to turn passively, so that the front end of the detachable ureteroscope can be extended. Into every corner of the renal pelvis to clean up stones more effectively.

Another advantage of the present invention is to provide a detachable ureteroscope, which can be smoothly inserted by the operator into the junction of the ureter and the kidney by using a wedge-shaped front end of a guiding inner core. The guiding inner core of the tube is withdrawn from the patient's body according to this, and the main body of the tube scope can be temporarily used as a channel connected to the outside of the patient.

According to one aspect of the present invention, the present invention provides a detachable ureteroscope, the detachable ureteroscope comprising:

a guide;

An outer sheath having an inner channel inside the outer sheath, the guide is adapted to be detachably installed on the outer sheath through the inner channel from the front end of the outer sheath, so as to facilitate the removal of the outer sheath The sheath is inserted into the patient's kidney through the patient's ureter; and

an inner core adapted to be mounted on the outer sheath after withdrawing the guide through the inner channel, wherein the inner channel diameter of the outer sheath is larger than the outer diameter of the inner core , the inner channel of the outer sheath is suitable for expulsing stones and containing the inner core, wherein the inner core has a perfusion channel, and the perfusion channel is suitable for passing irrigation fluid and medical instruments to crush the stones stone and flushing, wherein the perfusion channel is independent from the internal channel to prevent clogging.

According to an embodiment of the present invention, wherein the outer sheath includes an outer sheath body and a traction structure, the traction structure is adapted to be installed on the outer sheath, so that the outer sheath can enter the patient after bending In the renal pelvis, effective lithotripsy and stone expulsion.

According to an embodiment of the present invention, wherein the outer sheath body includes an operating handle, a guiding tube and a bendable tube, the operating handle and the bending tube are respectively connected to two ends of the guiding tube, And the bendable tube is located at the front end of the guide tube, and the operating handle is located at the rear end of the guide tube.

According to an embodiment of the present invention, wherein the operating handle has a row of stone openings and an inner core opening, the inner core opening communicates with the internal channel, and the inner core is suitable for entering the The stone discharge port is connected to the internal passage, and the operating handle is adapted to be connected to an external negative pressure suction device through the stone discharge port.

According to an embodiment of the present invention, wherein the bendable pipe has a suction port, the suction port communicates with the internal channel, and gravel is suitable to be sucked into the internal channel through the suction port, so as to be drawn from the internal channel. The above-mentioned row of stones is discharged.

According to an embodiment of the present invention, the bendable pipe further includes a bendable member and a jacket, and the jacket is adapted to be sleeved on the outer end of the bendable member to ensure the integral sealing of the internal channel sex.

According to an embodiment of the present invention, the operating handle has a first connecting portion and a mounting groove, the inner core is mounted on the first connecting portion of the outer sheath, and the mounting groove is located on the The side end of the operating handle, the bottom of the installation groove communicates with the internal channel.

According to another aspect of the present invention, the present invention provides a detachable ureteroscope adapted to extend into the interior of a patient's renal pelvis to treat a kidney stone,

The detachable ureteroscope includes:

A tube mirror main body, the tube mirror main body includes a main mirror body and has a first working channel, and the first working channel runs through the front and rear end surfaces of the main mirror body;

a guide core; and

A perfusion inner core, the guide inner core and the perfusion inner core are replaceably arranged in the first working channel, the perfusion inner core includes an inner core body and has a third working channel, so The third working channel runs through the inner core body, and a second working channel is provided between the main mirror body and the inner core body, and the kidney stones are perfused and pulverized through the third working channel, The kidney stone is discharged from the body through the second working channel.

According to an embodiment of the present invention, the tube mirror main body includes a visual member, which is arranged at the front end of the main mirror body to obtain a field of view extending to the inside of the renal pelvis of the patient, and the visual member The components include a visual unit, an image transmission unit and a visual channel, the visual unit is arranged on the front surface of the main mirror body to obtain the front view, and the visual channel is spaced apart from the second A working channel, the image transmission unit is adapted to be arranged in the visualization channel, the front end of the image transmission unit is electrically connected to the visualization unit, and the rear end extends outside the body of the patient.

According to an embodiment of the present invention, the perfusion inner core further includes an operating part and a plurality of bendable members, the main body of the inner core is arranged at the front end of the operating part, and the bendable members are arranged at the front end of the operating part. The inside of the inner core body to drive the bending of the inner core body. The detachable ureteroscope has two states. When the detachable ureteroscope is inserted, the tube mirror body is sleeved on the The guiding inner core extends to the renal pelvis of the patient. When the detachable ureteroscope is in working state, the main body of the tube scope is sleeved on the perfusion inner core, and the operating part is engaged with the gripping part. In order to fix the inner core body inside the main mirror body, the perfusion inner core is driven by the bendable member to drive the tube mirror main body to bend and extend to the patient's renal pelvis.

According to an embodiment of the present invention, wherein the bendable member includes a first bendable unit and a second bendable unit, the first bendable unit is arranged at the front end of the second bendable unit, so The rear end of the second bendable unit is connected to the main mirror body.

According to an embodiment of the present invention, the perfusion inner core includes at least one control member, and the control member is disposed on the operating part to control the bending direction of the bendable member located inside the patient outside the patient's body , the control member includes a first control unit and a second control unit, the first control unit and the second control unit respectively control the first bendable unit and the second bendable unit.

According to an embodiment of the present invention, wherein the tube lens body has a second working channel, the perfusion inner core has a third working channel, and the second working channel is arranged between the inner core body and the Between the main mirror bodies, the third working channel runs through the inner core body, the second working channel serves as a suction channel, and the third working channel serves as a perfusion channel.

According to an embodiment of the present invention, the perfusion inner core further includes a sleeve, and the sleeve is adapted to be sleeved on the outside of the inner core body to maintain the gap between the third working channel and the second working channel. are isolated from each other.

According to an embodiment of the present invention, wherein the tube mirror body has a first working channel, the first working channel passes through the main mirror body, and the guiding inner core includes a first inner core and a first Two inner cores, the first inner core and the second inner core are detachably connected, and when the detachable ureteroscope is inserted into the state, the second inner core and the first inner core are sequentially disengaged in the first working channel.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of a detachable ureteroscope according to a preferred embodiment of the present invention.

Fig. 2 is an exploded schematic diagram of a detachable ureteroscope according to a preferred embodiment of the present invention.

Fig. 3 is a combined schematic diagram of a sheath and a guide of a detachable ureteroscope according to a preferred embodiment of the present invention.

Fig. 4 is a combined schematic diagram of the outer sheath and inner core of a detachable ureteroscope according to a preferred embodiment of the present invention.

Fig. 5 is a schematic diagram of cooperation between a guide and an outer sheath of a detachable ureteroscope according to a preferred embodiment of the present invention.

Fig. 6 is a partially enlarged sectional view of a detachable ureteroscope according to a preferred embodiment of the present invention.

Fig. 7 is a side view of a detachable ureteroscope according to a preferred embodiment of the present invention.

Fig. 8 is a partial sectional view of a detachable ureteroscope according to a preferred embodiment of the present invention.

Fig. 9 is a schematic diagram of inserting the outer sheath of a detachable ureteroscope into the kidney according to a preferred embodiment of the present invention.

Fig. 10 is a schematic diagram of inserting the inner core of a detachable ureteroscope into the kidney according to a preferred embodiment of the present invention.

Fig. 11 is a partial perspective view of a detachable ureteroscope according to a preferred embodiment of the present invention.

Fig. 12 is a partial perspective view of a detachable ureteroscope according to a second preferred embodiment of the present invention.

Fig. 13 is a schematic diagram of bending the bendable tube of a detachable ureteroscope according to the second preferred embodiment of the present invention.

Fig. 14 is a structural sectional view of a detachable ureteroscope according to a third preferred embodiment of the present invention.

Fig. 15 is an overall schematic diagram of a detachable ureteroscope according to a preferred embodiment of the present invention.

Fig. 16 is an exploded schematic view of the detachable ureteroscope according to the preferred embodiment of the present invention.

Fig. 17A is an overall schematic diagram of a perfusion inner core of the detachable ureteroscope according to the preferred embodiment of the present invention.

Fig. 17B is a schematic diagram of the bending state of the perfusion inner core of the detachable ureteroscope according to the preferred embodiment of the present invention.

Fig. 17C is an overall schematic diagram of a perfusion inner core of the detachable ureteroscope according to another preferred embodiment of the present invention.

Fig. 17D is an overall schematic diagram of a perfusion inner core of the detachable ureteroscope according to another preferred embodiment of the present invention.

Fig. 17E is an overall schematic diagram of a perfusion inner core of the detachable ureteroscope according to another preferred embodiment of the present invention.

Fig. 18A is the first overall schematic diagram of the insertion state of the detachable ureteroscope according to the preferred embodiment of the present invention.

Fig. 18B is the second overall schematic diagram of the insertion state of the detachable ureteroscope according to the preferred embodiment of the present invention.

Fig. 19A is the first schematic diagram of the operation process of the detachable ureteroscope according to the preferred embodiment of the present invention.

Fig. 19B is the second schematic diagram of the operation process of the detachable ureteroscope according to the preferred embodiment of the present invention.

Fig. 19C is the third schematic diagram of the operation process of the detachable ureteroscope according to the preferred embodiment of the present invention.

Fig. 19D is the fourth schematic diagram of the operation process of the detachable ureteroscope according to the preferred embodiment of the present invention.

Detailed ways

The following description serves to disclose the present invention to enable those skilled in the art to carry out the present invention. The preferred embodiments described below are only examples, and those skilled in the art can devise other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present invention.

Those skilled in the art should understand that in the disclosure of the present invention, the terms "vertical", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present invention and simplified description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, so the above terms should not be construed as limiting the present invention.

It can be understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element The quantity can be one or more, and the term "one" cannot be understood as a limitation on the quantity.

As shown in accompanying drawings 1 to 11, it is a schematic diagram of a detachable ureteroscope provided by the present invention. The structure of the detachable ureteroscope includes a guide 60, an outer sheath 70 and an inner core 80 , the outer sheath 70 has an inner passage 71 inside, the guide 60 is adapted to be installed in the inner passage 71 of the outer sheath 70, and the inner core 80 is adapted to be installed in the outer sheath 70 In the inner channel 71 of the sheath 70 , in other words, the outer sheath 70 is adapted to be sleeved on the outer ends of the guide member 60 and the inner core 80 through the inner channel 71 .

When the detachable ureteroscope is in use, it is suitable to install the guide member 60 in the inner passage 71 of the outer sheath 70, in other words, the outer sheath 70 is passed through the The inner channel 71 is sleeved on the outer end of the guide 60, and then the combination of the guide 60 and the outer sheath 70 is inserted into the patient's kidney through the patient's ureter, and the patient's kidney is pulled out after the insertion is completed. The guide 60 installs the inner core 80 in the inner passage 71 of the outer sheath 70, and drives the inner core 80 to bend through the outer sheath 70 to achieve crushing and stone removal. and other functions. When the internal channel 71 is blocked by gravel, the blockage problem can be solved by simply pulling out the inner core 80. After the blockage problem is solved, the inner core 80 only needs to be pulled out along the The internal channel 71 can be re-inserted, which greatly reduces the operation time and improves the operation quality.

The guide 60 includes a first guide unit 61 and a second guide unit 62, the first guide unit 61 is adapted to be used in combination with the second guide unit 62, when in use, the The combination of the first guiding unit 61 and the second guiding unit 62 is installed on the outer sheath 70 through the inner channel 71 in the outer sheath 70 .

Taking the insertion advance direction of the detachable ureteroscope as the front of the detachable ureteroscope, when the guide 60 is installed on the outer sheath 70, it is suitable for The front end is inserted into the internal channel 71, and the front end of the guide member 60 is fixed to the front end of the outer sheath 70. After the outer sheath 70 is inserted, it is suitable for the guide member 60 to automatically The rear end of the outer sheath 70 is taken out. The front end of the guide 60 is preferably inclined conical, so that when the guide 60 is mounted on the outer sheath 70, the outer sheath 70 can pass through the guide 60. The tapered tip enters the patient's ureter more easily and travels to the patient's kidney.

The first guiding unit 61 and the second guiding unit 62 of the guiding member 60 are adapted to be combined together through a wedge structure, and after being installed in the outer sheath 70, the Take out either the first guiding unit 61 or the second guiding unit 62, and then take out the first guiding unit 61.

The front end of the guide 60 is tapered, the tapered front points to the advancing direction of the separated ureteroscope, the tapered rear of the guide 60 is in contact with the front end of the outer sheath 70, and The outer diameter of the tapered rear portion of the guide 60 is larger than the inner diameter of the inner passage 71, so that when the guide 60 is mounted on the outer sheath 70 through the inner passage 71, the guide The front end of the lead member 60 may be held at the front end of the sheath 70 .

The outer diameter of the tapered rear portion of the guide 60 is at its maximum consistent with the outer diameter of the outer sheath 70, so that when the guide 60 is mounted on the outer sheath, the outer structure curve of the joint is smooth , When it is inserted, it will not scratch the ureteral mucosa and cause damage to the ureter due to the structural curve of the connection.

The outer sheath 70 includes an outer sheath main body 72, a traction structure 73 and a visual part 74, the traction structure 73 and the visual part 74 are adapted to be installed on the outer sheath main body 72, the outer sheath The sheath 70 is adapted to drive the outer sheath body 72 to bend through the traction structure 73 , so that the outer sheath 70 can be bent. With the insertion end of the detachable ureteroscope or the advancing direction in the human body as the front end or front, the visual part 74 is adapted to be installed on the front end of the outer sheath main body 72 to provide a good view. At the same time, when the front end of the outer sheath 70 is bent, the visual member 74 can provide the operator with different angles of view.

The outer sheath 70 is adapted to realize the bending of the front end of the outer sheath 70 through the traction structure 73, so that the front end of the outer sheath 70 can be stretched into the renal pelvis of the patient's kidney after being bent, effectively and nearly Carry out gravel and row stones at a distance.

The inside of the outer sheath 70 also has a line channel 75, the line channel 75 is suitable for passing through the wires connected with the visible part 74, thereby providing a light source for the inside of the patient's kidney, and turning the visible part The images captured by 74 are transmitted to external imaging equipment through wires, so that the operator can monitor the internal conditions of the patient's kidney in real time, so that the operator can take medical measures more effectively and accurately, and improve the operation efficiency and treatment effect.

In addition, the outer sheath 70 also includes a sealing ring 76, the sealing ring 76 is arranged in the inner channel 75 of the outer sheath body 72, and is located at the rear end of the stone discharge port 7211, The sealing ring 76 is suitable for sealing.

The central position of the sealing ring 76 has a through hole 761, the diameter of the through hole 761 is slightly larger than the outer diameter of the flushing pipe 82 of the inner core 80, and the through hole 761 is suitable for the inner core The flushing pipe 82 of 80 passes through, and the sealing ring 76 is suitable for sealing the internal passage 71 after the inner core 80 enters the internal passage 71, so as to ensure the overall tightness of the outer sheath 70 and ensure The normal process of attracting and removing stones.

When in use, the outer sheath 70 is adapted to suck out the crushed stones in the patient's kidney through the internal channel 71 through the negative pressure suction device connected to the stone discharge port. The suction port 7231 is sucked into the internal channel 71, and when stones enter the operating handle 721 through the internal channel 71, the sealing ring 76 can prevent the stones from being excessively dispersed in the operating handle 721, and the suction The calculi that come out are blocked to gather near the stone discharge port 7211 for easy discharge. The outer sheath body 72 includes an operating handle 721 , a guiding tube 722 and a bendable tube 723 , and two ends of the guiding tube 722 are respectively connected to the operating handle 721 and the bendable tube 723 . In other words, the front end of the operating handle 721 is connected to one end of the guiding tube 722 , and the rear end of the bendable tube 723 is connected to the other end of the guiding tube 722 .

The front end of the operating handle 721 is connected to one end of the guide tube 722, and the rear end of the operating handle 721 has an inner core opening 7212, and the inner core opening 7212 extends to the inside of the operating handle 721 and communicates with the The inner passage 71 and the inner core opening 7212 are suitable for passing the inner core 80 , and the inner core 80 is adapted to be inserted into the inner passage 71 through the inner core opening 7212 . In addition, the side end of the operating handle 721 also has a row of stone openings 7211, an installation groove 7213 and a line opening 7215, the bottom of the installation groove 7213 communicates with the internal passage 71, and the installation groove 7213 Suitable for installing the traction structure 73, the stone discharge opening 7211 and the line opening 7215 extend to the inside of the operating handle 721 to communicate with the internal channel 71 and the line channel 75 respectively, and the operating handle 721 It is suitable to be connected to a negative pressure suction device through the stone discharge port 7211, so as to suck out crushed stones in the patient's kidney through the negative pressure suction device. The circuit channel 75 is suitable for passing a power supply wire, so as to connect the visual part 74 with an external image forming device through the wire, and the outer sheath main body 72 is suitable for connecting with an external device through the circuit port 7215 .

The rear end of the operating handle 721 is located at the periphery of the inner core opening 7212 and also has a first connecting portion 7214 surrounding the inner core opening 7212 . When the inner core 80 is mounted on the outer sheath 70 , the outer sheath 70 is adapted to hold the inner core 80 in the inner passage 71 of the outer sheath 70 through the first connecting portion 7214 .

The rear end of the bendable tube 723 is connected to the guide tube 722, and the front end of the bendable tube 723 has a suction port 7231 and a visual part installation groove 7232, and the suction port 7231 is directed towards the bendable tube 723. The tube 723 extends inside to communicate with the internal passage 71, the bottom of the visible part installation groove 7232 communicates with the line channel 75, and the visible part installation groove 7232 is suitable for installing the visible part 74, The visual member 74 includes a visual unit and a lighting unit, the lighting unit is suitable for providing a good visual environment for the operator to perform surgical treatment, and the visual unit is suitable for capturing environmental images and transmitting them to external images The imaging device cooperates with the lighting unit to provide the operator with a good operating field of vision.

In other words, in the outer sheath 70, the suction port 7231 and the stone discharge port 7211 are respectively located at both ends of the internal channel 71, and are suitable for connecting the negative pressure suction device to the stone discharge port 7211 to take the patient The crushed stones in the kidney are sucked into the internal channel 71 through the suction port 7231 and discharged through the stone discharge port 7211 communicating with the internal channel. The visible part 74 is installed in the visible part installation groove 7232, and the wires connected to the visible part 74 communicate with the external image forming equipment through the line channel 75 at the bottom of the visible part installation groove 7232 connection, so that the operator can monitor the situation inside the patient's kidney in real time, so that the operator can adopt the most reasonable and effective method in time during the operation, improve the operation efficiency and operation quality, and because the line channel 75 and the internal channel 71 They are independent of each other and do not interfere with each other, so that the line channel 75 will not affect the stone removal efficiency of the internal channel 71 . Compared with the traditional ureteroscope, the internal channel 71 of the detachable ureteroscope has a larger diameter, which has higher stone removal efficiency and is less likely to be blocked.

The rear end of the bendable tube 723 is connected to the guide tube, the bendable tube 723 includes a bendable piece 7233 and a jacket 7234, and the jacket 7234 is suitable for being sleeved on the bendable piece 7233 At the outer end, the bendable member 7233 is preferably a spring coil, and the inner diameter of the bendable member 7233 is consistent with the diameter of the inner channel 71. There is an installation cavity inside the outer sleeve 7234, and the inside of the installation cavity The diameter is larger than the inner diameter of the internal passage 71, and the bendable member 7233 is suitable for being installed in the installation cavity of the outer sleeve 7234, in other words, the outer sleeve 7234 is sleeved on the bendable member 7233 the outer end. At the same time, the interval between the coils of the bendable member 7233 gradually increases from the rear end of the bendable member 7233 along the front end.

In other words, the spring coil of the bendable member 7233 changes from dense to sparse from the rear end of the bendable member 7233 along the front end, and the joint between the bendable tube 723 and the guide tube 722 The number of spring coils of the bendable member 7233 is relatively dense, so that the connection strength of the bendable pipe 723 at the connection with the guide pipe 722 increases, and the bending resistance strength also increases accordingly, making the connection easier firm.

The spring coil of the bendable part 7233 changes from dense to sparse along the front end direction from the rear end of the bendable part 7233, which also makes the front end of the bendable part 7233 easier to bend than the rear end, so the operator When using the traction structure 73 to control the bending of the bendable tube 723 , the smaller the bendable angle of the bendable tube 723 is, the closer the position of the pulling point is to the front end of the bendable tube 723 , and the less traction force is consumed. Therefore, when the traction point of the lightweight structure 73 is set at the front end of the bendable tube 723 , the operator can use it more easily and with less effort.

The outer sheath 7234 is sleeved on the outer end of the bendable member 7233 and connected to the guide tube 722 so that the outer sheath body 72 will not damage the outer sheath 70 while being bendable. The overall airtightness of the inner channel 71 affects the effect of stone removal.

The traction structure 73 includes a control member 731 and a traction wire 732, the control member 731 is adapted to be installed on the operating handle 721 of the outer sheath body 72 through the installation groove 7213, and the traction wire 723 One end is adapted to be connected to the control member 731 , and the other end is adapted to pass through the internal channel 71 and then be connected to the inside of the front end of the bendable tube 723 of the outer sheath body 72 . It is suitable for controlling the control member 731 to control the contraction and relaxation of the traction wire 732, so that the traction wire 732 connected to the control member 731 is pulled to drive the bendable tube 723 to bend, further realizing the external The sheath 70 is bendable. The number of the pulling wires 732 can optionally be two, three, or four. When the number of the pulling wires 732 is two, the pulling wires 732 can control the bending of the bendable tube 723 in two directions, while When the number of the pulling wires 732 is three, the pulling wires 732 can realize that the bendable tube 723 can be bent in three directions through traction control; when the number of the pulling wires 732 is four, the The traction wire 732 can realize that the bendable tube 723 can be bent in four directions through traction control. The more the number of the traction wire 732, the more bendable directions the bendable tube 723 can be. The bendable tube 723 is more flexible.

The inner core 80 includes a flushing tube 82, a perfusion tube 83 and a sealing cap 84, with the insertion direction of the inner core 80 as the front, the front end of the perfusion tube 83 is integrally connected to the flushing tube 82, The sealing cap 84 is mounted on the rear end of the irrigation tube 83 .

The inner core 80 has a perfusion channel 81 inside, and the perfusion channel 81 is suitable for medical instruments such as irrigating fluid and lithotripsy optical fiber to pass through, so as to perform lithotripsy and flushing of stones in the patient's kidney.

The front end of the perfusion tube 83 is connected to the flushing tube 82, the rear end of the perfusion tube 83 has an instrument inlet 832, and the side end of the perfusion tube 83 also has a perfusion port 831, the perfusion port 831 and the instrument inlet 832 are both connected to the perfusion channel 81 , and the perfusion port 831 is suitable for allowing irrigation fluid to pass through to flush the broken stones inside the patient's kidney. The instrument inlet 832 is suitable for stone crushing optical fiber and some other medical instruments to enter, so as to crush stones, clean up the stones, etc., and there is a sealing part 834 on the periphery of the instrument inlet 832, and the sealing part 834 Surrounding the instrument inlet 832, the sealing cap 84 is adapted to be installed on the perfusion tube 83 through the sealing part 834, so as to close the instrument inlet after the lithotripsy is finished and medical instruments such as optical fiber are drawn out. 832. Ensure the overall tightness of the detachable ureteroscope, and ensure the smooth progress of negative pressure suction and stone removal.

The connection between the flushing tube 82 and the perfusion tube 83 has a second connecting portion 833. When the inner core 80 is installed on the outer sheath 70 through the inner channel 71, the inner core 80 It is adapted to be fixed to the first connecting portion 7214 of the operating handle 721 through the second connecting portion 833 .

One end of the flushing tube 82 is connected to the irrigation tube 83 , and the other end has a flushing port 821 , the flushing port 821 is connected to the perfusion channel 81 , and the flushing liquid comes from the perfusion port 831 of the perfusion tube 83 . After the perfusion enters the perfusion channel 81 , it flows out from the flushing port 821 to flush the crushed calculi and stones, and the stones are sucked out through the inner channel 71 of the outer sheath 70 and then discharged.

When the inner core 80 is installed on the outer sheath 70, the irrigation tube 82 is accommodated in the inner channel of the outer sheath 70, and the inner diameter of the inner channel 71 is much larger than that of the inner core. The outer diameter of the flushing tube 82 of 80, so that when the inner core 80 is installed in the inner channel 71 of the outer sheath 70, the inner channel 71 still has enough space for stone removal, ensuring the drainage Stone's smooth going.

The detachable ureteroscope is a combined flexible ureteroscope. By combining the outer sheath 70 and the inner core 80, different routes are used to realize the suction function of the detachable ureteroscope, so that the inner The channel 71 and the perfusion channel 81 are independent of each other and do not affect each other, while ensuring a proper ratio between the internal channel 71 and the perfusion channel 81 to avoid stone blockage. In addition, the inner core 80 and the outer sheath 70 have good coaxiality, so that the inner core 80 can be drawn out and rotated, which is beneficial to operations such as crushing and removing stones.

The detachable ureteroscope is suitable for bending the outer sheath 70 , thereby driving the inner core 80 disposed in the inner channel 71 of the outer sheath 70 to bend. The sheath of the traditional ureteroscope can only enter the junction of the kidney and the ureter. Therefore, after lithotripsy, it is far away from the lithotripsy point, which may easily cause unclean stone removal and low stone removal efficiency. The farther away, the more attractive force is needed when removing stones, and it is easy to damage the patient's pipeline mucosa. Compared with the traditional ureteroscope, the detachable ureteroscope can not only enter the kidney, but also because the outer sheath 70 bends the inner core 80 to bend the detachable ureteroscope, so that the After the detachable ureteroscope enters the kidney through the ureter, the front end of the detachable ureteroscope can be extended to some dead corners of the renal pelvis through the curved characteristic, so that stubborn stones in some dead corners can be effectively cleaned.

In the detachable ureteroscope, the outer sheath 70 is actively bent, and the inner core 80 is passively bent, so the outer sheath 70 and the inner core 80 move simultaneously. When in use, the outer sheath 70 is used to actively turn to drive the inner core 80 to turn passively, so that the outer sheath 70 and the inner core 80 move synchronously, so that gravel and stone removal can be carried out simultaneously and crushed The stones can be discharged immediately, there will be no debris deposition phenomenon. After the inner core 80 is flushed with crushed stones, the outer sheath 70 can immediately perform suction, and the crushed stones point is located near the suction port 7231, and the crushed stones can be easily discharged when the stones are sucked out. Suction discharge, stone removal is clean, stone removal efficiency is low, and the pressure required for suction is low, which will not cause damage to the patient's renal mucosa. In addition, the front end of the detachable ureteroscope can be inserted into every corner of the renal pelvis, so that stones can be removed more effectively. Simultaneously, the inner core 80 is rotatable, which can break up stones in "tricky" parts.

As shown in accompanying drawings 12 to 13, it is a schematic view of the second detachable ureteroscope provided by the present invention, the structure of the detachable ureteroscope includes a guide 60A, an outer sheath 70A and a The inner core 80A, the outer sheath 70A has an inner channel 71A inside, the guide 60A is suitable to be installed in the inner channel 71A of the outer sheath 70, and the inner core 80A is suitable to be installed in In the inner channel 71A of the outer sheath 70A, in other words, the outer sheath 70A is adapted to be respectively sleeved on the outer ends of the guide member 60A and the inner core 80A through the inner channel 71A .

The detachable ureteroscope in the second embodiment is similar in structure and working principle to the detachable ureteroscope in the first embodiment, and the biggest difference is the difference in the structure of the outer sheath 70A.

In the detachable ureteroscope of the second embodiment, the outer sheath 70A includes an outer sheath body 72A, a traction structure 73A and a visual part 74A, the traction structure 73A and the visual part 74A The outer sheath 70A is adapted to be installed on the outer sheath main body 72A, and the outer sheath 70A is adapted to drive the outer sheath main body 72A to bend through the traction structure 73A, so that the outer sheath 70A can be bent. With the insertion end of the detachable ureteroscope or the advancing direction in the human body as the front end or front, the visual part 74A is adapted to be installed on the front end of the outer sheath main body 72A to provide a good view.

In addition, the inside of the outer sheath 70A also has a line channel 75A, the line channel 75A is suitable for passing through the wires connected with the visible part 74A, so as to provide a light source for the inside of the patient's kidney, and The picture captured by the visual part 74A is transmitted to the external imaging device through the wire, so that the operator can monitor the situation inside the patient's kidney in real time, so that the operator can take medical measures more effectively and accurately, and improve the operation efficiency and treatment effect.

The outer sheath body 72A includes an operating handle 721A, a guiding tube 722A and a bendable tube 723A, and two ends of the guiding tube 722A are respectively connected to the operating handle 721A and the bendable tube 723A. In other words, the front end of the operating handle 721A is connected to one end of the guide tube 722A, and the rear end of the bendable tube 723A is connected to the other end of the guide tube 722A.

The front end of the operating handle 721A is connected to one end of the guide tube 722A, and the rear end of the operating handle 721A has an inner core opening 7212A, and the inner core opening 7212A extends to the inside of the operating handle 721A and communicates with the In the internal passage 71A, the inner core opening 7212A is suitable for passing the inner core 80A, and the inner core 80A is suitable for being inserted into the inner passage 71A through the inner core opening 7212A. In addition, the side end of the operating handle 721A also has a row of stone openings 7211A, an installation groove 7213A and a line opening 7215A, the bottom of the installation groove 7213A communicates with the internal channel 71A, and the installation groove 7213A Suitable for installing the traction structure 73A, the stone discharge opening 7211A and the line opening 7215A extend to the inside of the operating handle 721A to communicate with the internal channel 71A and the line channel 75A respectively, and the operating handle 721A It is suitable to be connected to a negative pressure suction device through the stone discharge port 7211A, so as to suck out crushed stones in the patient's kidney through the negative pressure suction device. The circuit channel 75A is suitable for passing a power supply wire, so as to connect the visual part 74A with an external image forming device through the wire, and the outer sheath main body 72A is suitable for connecting with an external device through the circuit port 7215A.

The rear end of the operating handle 721A is located at the periphery of the inner core opening 7212A, and also has a first connecting portion 7214A, and the first connecting portion 7214A surrounds the inner core opening 7212A. When the inner core 80A is installed on the outer sheath 70A, the outer sheath 70A is adapted to fix and retain the inner core 80A in the inner channel 71A of the outer sheath 70A through the first connecting portion 7214A Inside.

The rear end of the bendable tube 723A is connected to the guide tube 722A, and the front end of the bendable tube 723A has a suction port 7231A and a visual part installation groove 7232A, and the suction port 7231A faces toward the bendable tube 723A. The tube 723A extends inside to communicate with the internal channel 71A, the bottom of the visible part installation groove 7232A communicates with the line channel 75A, and the visible part installation groove 7232A is suitable for installing the visible part 74A, The visual element 74A includes a visual unit and a lighting unit, the lighting unit is suitable for providing a good visual environment for surgical treatment, the visual unit is suitable for capturing environmental images and transmitting them to external image imaging equipment, and The lighting unit cooperates to provide good operator visibility.

In other words, in the outer sheath 70A, the suction port 7231A and the stone discharge port 7211A are respectively located at the two ends of the internal channel 71A, and are suitable for connecting a negative pressure suction device to the stone discharge port 7211A to take the patient The crushed stones in the kidney are sucked into the internal channel 71A through the suction port 7231A, and discharged through the stone discharge port 7211A communicating with the internal channel. The visual part 74A is installed in the visual part installation groove 7232A, and the wire connected to the visual part 74A passes through the line channel 75A communicated with the external image forming device through the bottom of the visual part installation groove 7232A connection, so that the operator can monitor the situation inside the patient’s kidney in real time, so that the operator can adopt the most reasonable and effective method in time during the operation, and improve the operation efficiency and operation quality. are independent of each other and do not interfere with each other, so that the existence of the line channel 75A will not affect the stone removal efficiency of the internal channel 71A, and compared with the traditional ureteroscope, the internal channel of the detachable ureteroscope The diameter of 71A is larger, the efficiency of stone discharge is higher, and it is not easy to block.

The rear end of the bendable tube 723A is connected to the guide tube, and the bendable tube 723A includes a bendable piece 7233A and a jacket 7234A, and the jacket 7234A is suitable for being sleeved on the bendable piece 7233A. At the outer end, the bendable member 7233A is preferably a serpentine tube, and the inner diameter of the bendable member 7233A is consistent with the diameter of the inner channel 71A. There is an installation cavity inside the outer sleeve 7234A, and the installation cavity The inner diameter is larger than the inner diameter of the inner channel 71A, and the bendable member 7233A is adapted to be installed in the installation cavity of the outer sleeve 7234A, in other words, the outer sleeve 7234A is sleeved on the bendable member The outer end of the 7233A. At the same time, the interval between the snake bones of the bendable member 7233A gradually decreases from the rear end of the bendable member 7233A along the front end.

In other words, the width of the snake bone joints of the bendable member 7233A changes from wide to narrow from the rear end of the bendable member 7233A along the front end, and the bendable tube 723A and the guide tube 722A The snake joints of the bendable part 7233A at the connection are relatively wide, so that the connection strength of the bendable part 7233A at the connection between the bendable tube 723A and the guide tube 722A is relatively strong, not easy to break, and the connection is stronger , while the bending resistance increases accordingly, but the bendable angle of the rear end of the bendable member 7233A decreases.

The snake bone joint of the bendable part 7233A is narrowed from the rear end of the bendable part 7233A along the front end direction, which also makes the front end of the bendable part 7233A easier to bend than the rear end, so the operation Or when using the traction structure 73A to control the bending of the bendable tube 723A, the smaller the bending angle of the bendable tube 723A is, the closer the position of the pulling point is to the front end of the bendable tube 723A, the greater the traction force will be spent. Small. Therefore, when the traction point of the lightweight structure 73A is set at the front end of the bendable pipe 723A, it can make the operator more relaxed and labor-saving during use.

The outer sheath 7234A is sleeved on the outer end of the bendable member 7233A and connected to the guide tube 722A, so that the outer sheath body 72A can be bent without damaging the outer sheath 70A. The overall airtightness of the internal passage 71A affects the effect of stone removal.

The traction structure 73A includes a control member 731A and a traction wire 732A, the control member 731A is adapted to be installed on the operating handle 721A of the outer sheath body 72A through the installation groove 7213A, and the traction wire 723A One end is adapted to be connected to the control member 731A, and the other end is adapted to pass through the internal channel 71A and be connected to the inside of the front end of the bendable tube 723A of the outer sheath body 72A.

It is adapted to control the contraction and relaxation of the traction wire 732A by controlling the control member 731A, so that the traction wire 732A connected to the control member 731A is pulled to drive the bendable tube 723A to bend, further realizing the external The front end of the sheath 70A is bendable.

The outer sheath 70A of the detachable ureteroscope in the second embodiment uses a traction wire to drive the snake bone to bend. The bending principle is the same as that in the first embodiment, except that in the first embodiment, The spring coil is elastic and can automatically rebound after traction and bending. Therefore, the number of the traction wire 732 and the control member 731 of the detachable ureteroscope in the first embodiment is not limited, preferably It can be greater than or equal to one, because even a single one can complete the bending effect.

In the second embodiment, the snake bone tube has no elasticity, and cannot automatically rebound after traction and bending. Therefore, the traction wire 732A of the detachable ureteroscope in the second embodiment and the control There is a limit to the number of pieces 731A, and they need to exist in pairs, so that after being bent by pulling in one direction, they can be returned to their original positions by pulling in the other direction. Although the pulling wire 732 and the control member 731 of the detachable ureteroscope in the first embodiment are different from the pulling wire 732A and the control member 732A of the detachable ureteroscope in the second embodiment There are differences in the number of parts 731A to realize basic bending functions, but all of them can realize the function of bending and control the direction of bending.

As shown in FIG. 14 , it is a schematic diagram of the third detachable ureteroscope provided by the present invention. The structure of the detachable ureteroscope includes a guide 60B, an outer sheath 70B and an inner core 80B. The outer sheath 70B has an inner passage 71B inside, the guide 60B is adapted to be installed in the inner passage 71B of the outer sheath 70, and the inner core 80B is adapted to be installed in the outer sheath In other words, the outer sheath 70B is adapted to be sleeved on the outer ends of the guide member 60B and the inner core 80B respectively through the inner channel 71B.

The detachable ureteroscope in the third embodiment is similar in structure and working principle to the detachable ureteroscope in the second embodiment, and the biggest difference is the difference in the structure of the outer sheath 70B.

In the detachable ureteroscope of the third embodiment, the outer sheath 70B includes an outer sheath body 72B, a traction structure 73B and a visual part 74B, the traction structure 73B and the visual part 74B The outer sheath 70B is adapted to be installed on the outer sheath main body 72B, and the outer sheath 70B is adapted to drive the outer sheath main body 72B to bend through the traction structure 73B, so that the outer sheath 70B can be bent. With the insertion end of the detachable ureteroscope or the forward direction in the human body as the front end or front, the visual part 74B is adapted to be installed on the front end of the outer sheath main body 72B to provide a good view.

In addition, the inside of the outer sheath 70B also has a line channel 75B, the line channel 75B is suitable for passing through the wires connected with the visible part 74B, so as to provide a light source for the inside of the patient's kidney, and The picture captured by the visual part 74B is transmitted to the external imaging device through the wire, so that the operator can monitor the situation inside the patient's kidney in real time, so that the operator can take medical measures more effectively and accurately, and improve the operation efficiency and treatment effect.

The outer sheath body 72B includes an operating handle 721B, a guiding tube 722B and a bendable tube 723B. Two ends of the guiding tube 722B are respectively connected to the operating handle 721B and the bendable tube 723B. In other words, the front end of the operating handle 721B is connected to one end of the guiding tube 722B, and the rear end of the bendable tube 723B is connected to the other end of the guiding tube 722B.

The front end of the operating handle 721B is connected to one end of the guide tube 722B, and the rear end of the operating handle 721B has an inner core opening 7212B, and the inner core opening 7212B extends to the inside of the operating handle 721B and communicates with the In the internal passage 71B, the inner core opening 7212B is suitable for passing the inner core 80B, and the inner core 80B is suitable for being inserted into the inner passage 71B through the inner core opening 7212B. In addition, the side end of the operating handle 721B also has a row of stone openings 7211B, an installation groove 7213B and a line opening 7215B, the bottom of the installation groove 7213B communicates with the internal channel 71B, and the installation groove 7213B Suitable for installing the traction structure 73B, the stone discharge port 7211B and the line port 7215B extend to the inside of the operating handle 721B to communicate with the internal channel 71B and the line channel 75B respectively, and the operating handle 721B It is suitable to be connected to a negative pressure suction device through the stone discharge port 7211B, so as to suck out crushed stones in the patient's kidney through the negative pressure suction device. The circuit channel 75B is suitable for passing a power supply wire, so as to connect the visual part 74B with an external imaging device through the wire, and the outer sheath main body 72B is suitable for connecting with an external device through the circuit port 7215B.

The rear end of the operating handle 721B is located at the periphery of the inner core opening 7212B, and also has a first connecting portion 7214B, and the first connecting portion 7214B surrounds the inner core opening 7212B. When the inner core 80B is installed on the outer sheath 70B, the outer sheath 70B is adapted to fix and retain the inner core 80B in the inner channel 71B of the outer sheath 70B through the first connecting portion 7214B Inside.

The rear end of the bendable tube 723B is connected to the guide tube 722B, and the front end of the bendable tube 723B has a suction port 7231B and a visual part installation groove 7232B, and the suction port 7231B faces the bendable tube 723B. The tube 723B extends inside to communicate with the internal channel 71B, the bottom of the visible part installation groove 7232B communicates with the line channel 75B, and the visible part installation groove 7232B is suitable for installing the visible part 74B, The visual part 74B includes a visual unit and a lighting unit, the lighting unit is suitable for providing a good visual environment for the operator to perform surgical treatment, and the visual unit is suitable for capturing environmental images and transmitting them to external image imaging The device cooperates with the lighting unit to provide the operator with a good operating vision.

In other words, in the outer sheath 70B, the suction port 7231B and the stone discharge port 7211B are respectively located at the two ends of the internal channel 71B, and are suitable for connecting a negative pressure suction device to the stone discharge port 7211B to take the patient The crushed stones in the kidney are sucked into the internal channel 71B through the suction port 7231B, and discharged through the stone discharge port 7211B communicating with the internal channel. The visual part 74B is installed in the visual part installation groove 7232B, and the wire connected to the visual part 74B passes through the line channel 75B communicated with the external image forming device through the bottom of the visual part installation groove 7232B connection, so that the operator can monitor the situation inside the patient’s kidney in real time, so that the operator can adopt the most reasonable and effective method in time during the operation, improve the operation efficiency and operation quality, and because the line channel 75B and the internal channel 71B are independent of each other and do not interfere with each other, so that the existence of the line channel 75B will not affect the stone removal efficiency of the internal channel 71B, and compared with the traditional ureteroscope, the internal channel of the detachable ureteroscope The diameter of 71B is larger, the efficiency of stone discharge is higher, and it is not easy to block.

The rear end of the bendable tube 723B is connected to the guide tube, and the bendable tube 723B includes a bendable piece 7233B and a jacket 7234B, and the jacket 7234B is suitable for being sleeved on the bendable piece 7233B. At the outer end, the bendable member 7233B includes a snake-bone tube and a spring coil, the spring ring is installed in the snake-bone tube, the inner diameter of the bendable member 7233B is larger than the inner diameter of the inner channel 71B, The casing 7234B has an installation cavity inside, the inner diameter of the installation cavity is larger than the inner diameter of the inner channel 71B, and larger than the inner diameter of the bendable part 7233B, and the bendable part 7233B is suitable for being installed in the In other words, the outer sleeve 7234B is sleeved on the outer end of the bendable member 7233B, and the serpentine tube is sleeved on the outer end of the spring coil. At the same time, the interval between the snake bones of the bendable member 7233B gradually decreases from the rear end of the bendable member 7233B along the front end.

In other words, the width of the snake bone joint of the bendable member 7233B changes from wide to narrow from the rear end of the bendable member 7233B along the front end, and the bendable tube 723B and the guide tube 722B The snake joints of the bendable part 7233B at the connection are relatively wide, so that the connection strength of the bendable part 7233B at the connection between the bendable tube 723B and the guide tube 722B is relatively strong, not easy to break, and the connection is stronger . In addition, because the spring coil is also arranged in the snake tube, the overall strength of the snake tube is greatly improved, which reduces the possibility of the snake tube breaking when it is pulled and bent, and increases the overall strength of the snake tube. The applicability of the bendable tube 723B described above.

The snake bone joint of the bendable part 7233B narrows from the rear end of the bendable part 7233B along the front end direction, which also makes the front end of the bendable part 7233B easier to bend than the rear end, so the operation Or when using the traction structure 73B to control the bending of the bendable tube 723B, the smaller the bending angle of the bendable tube 723B is, the closer the position of the pulling point is to the front end of the bendable tube 723B, the greater the traction force will be spent. Small. Therefore, when the traction point of the lightweight structure 73B is set at the front end of the bendable pipe 723B, it can make the operator more relaxed and labor-saving during use. And because the structure of the bendable part 7233B is that the snake tube is sleeved on the outer end of the spring coil, the bendable part 7233B composed of the snake tube and the spring coil will Afterwards, it also has the ability to rebound, and the operator does not need to pull and reset again, which makes the outer sheath 70B more convenient and quick to use, and its performance is also greatly improved.

The outer sheath 7234B is sleeved on the outer end of the bendable member 7233B and connected to the guide tube 722B, so that the outer sheath body 72B can be bent without damaging the outer sheath 70B. The overall airtightness of the inner channel 71B affects the effect of stone removal.

The traction structure 73B includes a control member 731B and a traction wire 732B, the control member 731B is adapted to be installed on the operation handle 721B of the outer sheath body 72B through the installation groove 7213B, and the traction wire 723B One end is adapted to be connected to the control member 731B, and the other end is adapted to pass through the inner channel 71B and be connected to the inside of the front end of the bendable tube 723B of the outer sheath body 72B.

It is adapted to control the contraction and relaxation of the traction wire 732B by controlling the control member 731B, so that the traction wire 732B connected to the control member 731B is pulled to drive the bendable tube 723B to bend, further realizing the external The front end of the sheath 70B is bendable.

As shown in Fig. 15, another detachable ureteroscope 1 according to a preferred embodiment of the present invention is illustrated. The detachable ureteroscope 1 is used for urological surgery. The detachable ureteroscope 1 is suitable for being inserted from the patient's urethra into the patient's kidney to complete subsequent lithotripsy operations. The detachable ureteroscope 1 is suitable for treating a kidney stone 5 . The kidney stone 5 can be discharged from the patient's body from the detachable ureteroscope 1 to achieve the purpose of surgery. No blockage will occur during the kidney stone 5 being discharged from the patient's body.

For ease of description, the insertion direction of the detachable ureteroscope 1 is defined as front, and the insertion direction away from the detachable ureteroscope 1 is defined as rear. The lower side of the patient's renal pelvis is defined as inferior, and the upper side is defined as superior. The detachable ureteroscope 1 has two states, an insertion state and a working state. The state in which the detachable ureteroscope 1 is inserted from outside the body of the patient to the junction between the ureter and the renal pelvis is defined as the insertion state, and the detachable ureteroscope 1 extends to the inside of the patient's renal pelvis to treat the kidney stone 5 The state between when the kidney stone 5 is expelled from the patient's body is defined as the working state.

The detachable ureteroscope 1 includes a tubescope main body 10 , a perfusion core 20 and a guide core 30 . The perfusion inner core 20 and the guide inner core 30 are replaceably disposed in the tube lens main body 10 . Specifically, when the detachable ureteroscope 1 is inserted, the guiding inner core 30 is located inside the ureteroscope main body 10 . When the detachable ureteroscope 1 is working, the guiding inner core 30 is detached from the tubescope main body 10 , and the perfusion inner core 20 is located inside the tubeoscope main body 10 . In other words, the perfusion inner core 20 and the guide inner core 30 are respectively located in the tubescope main body 10 according to different states of the detachable ureteroscope 1 .

It is worth mentioning that the front end of the guiding inner core 30 has a wedge-shaped structure to keep the guiding inner core 30 always positioned at the front end of the tube lens main body 10 . That is to say, when the detachable ureteroscope 1 is inserted, the front end of the guiding inner core 30 is restricted to the front end of the tube scope main body 10 . In other words, the front end of the guide inner core 30 is held at the front end of the borescope main body 10, and the borescope main body 10 and the guide inner core 30 enter the patient's ureter together and are close to the patient's kidney. . That is to say, by virtue of the wedge-shaped front end of the guiding inner core 30 , the tube scope main body 10 is sent into the predetermined operation position in the patient's body.

The tube mirror body 10 includes a main mirror body 11 and a first working channel 18 , the main mirror body 11 provides an installation space, and the first working channel 18 is located on the main mirror body 11 . Specifically, the first working channel 18 extends from the front end of the main mirror body 11 to the rear end of the main mirror body 11 . That is to say, the first working channel 18 runs through the main mirror body 11 . The perfusion inner core 20 and the guide inner core 30 are replaceably located in the first working channel 18 . In other words, when the detachable ureteroscope 1 is inserted, the guiding inner core 30 is located in the first working channel 18; when the detachable ureteroscope 1 is working, the perfusion The inner core 20 is located in the first working channel 18 .

The tube lens body 10 also includes a handle 12 . The handle 12 provides a holding space. The handle 12 is integrally connected to the main mirror body 11 . The first working channel 18 runs through the holding member 12 . The holding member 12 is located on the rear side of the main mirror body 11 to provide an operating space for the operator when the detachable ureteroscope 1 is inserted and in a working state. That is to say, when the detachable ureteroscope 1 is inserted and working, the main scope body 1 is always located in the patient's ureter, and the holding member 12 is always located outside the patient's body.

The materials of the main mirror body 11 and the holding member 12 are different. Since the main mirror body 11 needs to be operated in vivo, the holding member 12 is operated outside the body. The tube lens main body 10 also needs to meet the purpose of being bendable. Therefore, the material of the main mirror body 11 is made of a skin-friendly material, and the holding member 12 can be made of a material with a relatively high friction force only to provide the operator with a holding space.

Particularly, in this embodiment, the cross-sectional shape of the first working channel 18 at the front end surface of the main mirror body 11 is a semicircle. The cross-sectional shape of the first working channel 18 at the front end of the main mirror body 11 may optionally be formed of a circle, a crescent shape, or the like.

The guiding inner core 30 includes a first inner core 31 and a second inner core 32 . The first inner core 31 is detachably connected to the second inner core 32 . When the detachable ureteroscope 1 is inserted, the guiding inner core 30 is located in the first working channel 18 . The first inner core 31 is closely attached to the second inner core 32 . When the detachable ureteroscope 1 is switched to the working state, the guiding inner core 30 needs to be pulled away from the first working channel 18 . Firstly, the second inner core 32 is pulled away, and at this moment, the front end of the first inner core 31 is still limited to the front end of the main mirror body 11 . Then, the first inner core 31 is rotated, so that the first inner core 31 can be pulled out from the first working channel 18 . That is to say, the guiding inner core 30 has been completely withdrawn from the first working channel 18 so far. In other words, the guide core 30 is completely withdrawn outside the patient's body.

Further, the first inner core 31 has a wedge-shaped front end. By extracting the second inner core 32 and the first inner core 31 accordingly, the purpose of completely extracting the guiding inner core 30 from the first working channel 18 is achieved. When the second inner core 32 is pulled away, the first inner core 31 is still limited by the front end of the main mirror body 11 . The operator rotates the first inner core 31 axially by 180° so that the table top of the first inner core 31 can correspond to the first working channel 18, and at this time the cross-sectional size of the table top is smaller than that of the first inner core 31. The cross-sectional size of a working channel 18 is to ensure that the first inner core 31 can be smoothly removed from the patient's body to the patient's body through the first working channel 18 .

The tube lens main body 11 includes an adjustment unit 15 , and the adjustment unit 15 is disposed on the handle 12 . The adjustment unit 15 is close to a suction channel to control the pressure of the suction channel. That is to say, the operator controls the adjustment unit 15 to realize the suction pressure for the suction channel to extend into the patient. In other words, the adjusting unit 15 plays a role of adjusting negative pressure suction.

The tube mirror main body 10 includes a visual member 14 disposed on the main mirror body 11 . The visible member 14 plays a role of visualization for the detachable ureteroscope 1 . In other words, the visualization of the lithotripsy process of the detachable ureteroscope 1 in the patient's renal pelvis is realized through the visualization member 14 .

The visible component 14 further includes a visible element 141 and a light source 144 , and the visible element 141 and the light source 144 are arranged on the front surface of the main mirror body 11 . That is to say, the visual element 141 and the light source 144 are always located at the forefront when the detachable ureteroscope 1 is in working state, so as to provide visual suction treatment of rubble. The visual element 141 is adapted to obtain the front view of the main mirror body 11 . The light source 144 is adapted to provide the illumination range required for the visual element 141 to obtain a field of view, so that the visual element 141 obtains a clearer field of vision.

The visual component 14 also includes an image transmission unit 143 and has a visual channel 142 . The image transmission unit 143 communicates with the visual element 141 through the visual channel 142 . That is to say, one end of the visual channel 142 is connected to the visual element 141 , and the other end is connected to the image transmission unit 143 . The viewing channel 142 is located at the holding member 12 and communicates from the holding member 12 to the front surface of the main mirror body 11 . The image transmission unit 143 is located outside the body of the patient, and is adapted to be connected to the visual element 141 through the visual channel 142 .

The viewing channel 142 is independent from the first working channel 18 . That is to say, the visible channel 142 is spaced apart from the first working channel 18 . In other words, the visible channel 142 and the first working channel 18 do not communicate with each other. The image transmission unit 143 is adapted to feed back the field of view captured by the visual component 141 outside the body of the patient, that is, the operator can capture the visual field captured by the visual component 141 through the image transmission unit 143 . In other words, the operator can observe the field of view obtained from inside the patient outside the patient's body.

It is worth mentioning that the tube mirror body 10 has a table 16, the table 16 is arranged on the front end of the main mirror body 11, the visible member 14 is located on the table 16, further, the can The visual element 141 is disposed on the table 16 . When the detachable ureteroscope 1 is inserted, the rear end of the first inner core 31 is blocked by the platform 16 . The operation process of the detachable ureteroscope 1 from outside the patient's body to the inside of the patient's body is illustrated as an example. The operator combines the guiding inner core 30 and the tube scope main body 10 with each other outside the patient's body. In other words, the guiding inner core 30 is pre-fixed on the tube lens main body 10 . The guiding inner core 30 is disposed in the first working channel 18 of the tube lens body 10 . Insert the guide inner core 30 and the tube scope main body 10 into the patient's ureter, and this process is blind insertion by the operator. Then, firstly extract the first inner core 31 out of the patient's body from the outside of the patient's body. The first inner core 31 is separated from the first working channel 18 . The second inner core 32 is rotated from the rear end of the second inner core 32 so that the table top of the second inner core 32 corresponds to the cross section of the first working channel 18 . The second inner core 32 is pulled away from the first working channel 18 . At this time, the guiding inner core 30 is completely withdrawn from the first working channel 18 by the operator. Only the tube scope body 10 is located in the patient's ureter, close to the patient's renal pelvis.

During the subsequent operation, the perfusion inner core 20 is inserted into the first working channel 18 by the operator. That is to say, the perfusion inner core 20 replaces the guide inner core 30 and is installed inside the tube lens main body 10 . In other words, the perfusion inner core 20 is placed inside the patient's kidney together with the tubescope main body 10 by the operator. The perfusion inner core 20 and the front end of the tube scope main body 10 extend along the patient's renal pelvis to the interior of the renal pelvis.

The perfusion inner core 20 includes an inner core body 21 and an operation part 22 , the inner core body 21 is connected to the operation part 22 . The inner core body 21 is located at the front end of the operation part 22 . The inner core body 21 is suitable for providing an installation space, and the operation part 22 is suitable for providing a holding space. When the detachable ureteroscope 1 is working, the inner core body 21 is located inside the patient's body, and the operating part 22 is located outside the patient's body. The diameter of the inner core body 21 is smaller than the diameter of the first working channel 18, so that when the detachable ureteroscope 1 is working, the inner core body 21 can pass from the rear of the first working channel 18 The end extends to the front end of the first working channel 18 .

The operation part 22 is connected to the rear end of the inner core body 21 and is located outside the patient's body. It is worth mentioning that the operation portion 22 is limited by the rear end of the handle 12 . That is to say, the operating portion 22 is limited to the rear end of the handle 12 . In other words, the operating portion 22 is adapted to be engaged with the rear end of the handle 12 . The length of the first working channel 18 is set to be equal to the length of the inner core body 21, so that when the detachable ureteroscope 1 is in working state, the tube lens main body 10 and the perfusion inner core 20 together May extend to the interior of the patient's renal pelvis. More specifically, the inner core body 21 and the main mirror body 11 maintain a relatively fixed front end and extend together to the inside of the patient's renal pelvis. In other words, the tube scope main body 10 and the perfusion inner core 20 enter the patient's renal pelvis in a postfixed manner.

It is worth mentioning that the tube lens body 10 has a second working channel 19 . The second working channel 19 surrounds the inner core body 21 . That is to say, the space between the main mirror body 11 and the inner core body 21 is the second working channel 19 . The second working channel 19 is adapted to provide a suction space. In other words, the suction work is done through the second working channel 19 . The second working channel 19 is a part of the first working channel 19 . When the detachable ureteroscope 1 is outside the body of the patient, insert the guide inner core 30 through the first working channel 19; The core 30 is completely separated from the tube lens body 10 , and there is nothing in the first working channel 18 . The extension of the second working channel 19 on the holding member 12 is a protruding outlet, that is to say, when the detachable ureteroscope 1 is working, the perfusate in the renal pelvis of the patient can come from the first The second working channel 19 is discharged from the body.

The tube lens body 10 further includes a sealing ring 17 , and the sealing ring 17 is disposed inside the rear end of the holding member 12 . That is to say, when the detachable ureteroscope 1 is in working state, the sealing ring 17 is arranged at the junction of the tubescope main body 10 and the perfusion inner core 20 . Further, the sealing ring 17 is arranged in the second working channel 19 to prevent the perfusate from flowing backward from the front end when the detachable ureteroscope 1 is in working state. That is, the sealing ring 17 plays the role of blocking, waterproofing and guiding the flow direction, so as to guide the perfusate to flow out from the second working channel 19 from the front end to the rear end. The sealing ring 17 is implemented in the shape of a ring in this embodiment, allowing the inner core body 21 to pass through. The center of the ring is a serrated blocking piece, that is to say, when the inner core body 21 does not pass through, the sealing ring 17 is completely sealed; when the inner core body 21 passes through the center of the sealing ring 17, the sealing ring 17 The outside of the inner core body 21 is separated from the front and rear by the ring end surface of the sealing ring 17 .

The perfusion inner core 20 has a third working channel 28 , and the third working channel 28 is located inside the second working channel 19 . That is to say, the third working channel 28 is surrounded by the second working channel 19 . In other words, when the detachable ureteroscope 1 is switched to the working state, the first working channel 18 is opened into the inner core body 21 . The first working channel 18 is divided into two parts by the inner core body 21 , the second working channel 19 and the third working channel 28 . In other words, the cross-sectional area of the first working channel 18 is larger than the cross-sectional area of the second working channel 19 plus the cross-sectional area of the third working channel 28 . The second working channel 19 is outside the inner core body 21 , and the third working channel 28 is inside the inner core body 21 .

The perfusion inner core 20 is located inside the tubescope main body 10 to perfuse and attract and pass through the instrument debris. Thus, the second working channel 19 plays a role of suction when the detachable ureteroscope 1 is working. When the detachable ureteroscope 1 is in working state, the third working channel 28 is used for perfusion and for passing through lithotripsy instruments.

In this embodiment, the third working channel 28 extends from the front end to the rear end of the inner core body 21 , and a lithotripsy instrument can pass along the third working channel 28 to the patient's renal pelvis. The rear end of the third working channel 28 has two branches, one end is used to input perfusate etc. into it, and the other end is used to pass into the lithotripsy instrument. That is to say, the third working channel 28 plays the role of perfusing and providing an extension channel for the lithotripsy instrument.

The perfusion inner core 20 has a perfusion port 26 and an instrument port 27, the perfusion port 26 and the instrument port 27 are located at the operation part 22, that is to say, the perfusion port 26 and the instrument port 27 It is arranged at the rear end of the perfusion inner core 20 . Further, the instrument port 27 is located on the rear end surface of the operation part 22, the perfusion port 26 is located on the peripheral side of the operation part 22, the perfusion port 26 and the instrument port 27 are independent of each other, so that the two channels are separated. The two channels separated from each other by the perfusion port 26 and the instrument port 27 are designed to lead into different devices to perform different functions. Specifically, the perfusion port 26 is suitable for passing through a perfusion device, and the perfusion port 26 communicates with the inside of the patient's renal pelvis and the outside of the patient's body. . The instrument port 27 is suitable for passing through a lithotripsy instrument, and the lithotripsy instrument extends from the instrument port 27 into the third working channel 28, and finally extends to the inside of the patient's renal pelvis, and is located in the renal pelvis. Said kidney stone 5 is processed.

It is worth mentioning that the front end of the third working channel 28 communicates with the patient's renal pelvis, and the rear end communicates with the perfusion port 26 and the instrument port 27 . That is to say, the third working channel 28 plays two functions of perfusion and stone breaking.

The perfusion inner core 20 also includes a pair of control members 23 , and the control members 23 are located at the operation portion 22 . The control member 23 is provided on one side of the operation portion 22 . The control member 23 is adapted to control the bending of the front end of the inner core body 21 .

The perfusion core 20 includes a pair of bendable members 24 that provide the bending of the core body 21 . Specifically, the bendable member 24 is disposed inside the inner core body 21 . In other words, the bendable member 24 is sleeved on the front end of the inner core body 21 to tend to integrally connect the inner core body 21 to the bendable member 24 .

In this embodiment, the bendable member 24 allows the inner core body 21 to bend, and the bendable member 24 is optionally made of bendable elements such as spring coils and snake bones. That is to say, the bendable member 24 includes a first bendable unit 241 and a second bendable unit 242 . The first bendable unit 241 is located at the front end of the second bendable unit 242 . In other words, the front end of the second bendable unit 242 is connected to the first bendable unit 241 , and the rear end is connected to the inner core body 21 . In this embodiment, the first bendable unit 241 is exemplarily selected as a serpentine structure, and the second bendable unit 242 is exemplarily selected as a spring coil structure. The first bendable unit 241 and the second bendable unit 242 are associated and connected to realize the universal bending of the bendable member 24, and the two-stage structure also ensures that the first bendable unit 241 and the second bendable unit 242, when driving the inner core body 21 to bend, there will be no phenomenon that the strength cannot be supported due to the singleness of the structure. In other words, the second bendable unit The unit 242 and the first bendable unit 241 provide structural support to each other.

The perfusion inner core 20 also includes a pair of driving members 25 disposed inside the inner core body 21 . One end of the driving member 25 is connected to the bendable member 24 , and the other end is connected to the control member 23 . That is to say, the bendable member 24 located in the patient's body is linked with the control member 23 through the driving member 25 . In other words, the operator can realize the bending of the bendable member 24 by controlling the control member 23 and driving the drive member 25 .

The control member 23 includes a first control unit 231 and a second control unit 232, the first control unit 231 and the second control unit 232 are respectively located in the operation portion 22, and the first control unit 231 and the second control unit 232, so that the control objects of the first control unit 231 and the second control unit 232 are separated from each other to enhance the interactivity of the control, so that the operator can control the perfusion inner core 20.

The drive member 25 further includes a first drive unit 251 and a second drive unit 252, the front end of the first drive unit 251 is connected to the front end of the first bendable unit 241, and the rear end is connected to the first bendable unit 241. A control unit 231 . The front end of the second driving unit 252 is connected between the first bendable unit 241 and the second bendable unit 242 , and the rear end is connected to the second control unit 232 . In other words, the front end of the second driving unit 252 is connected to the rear end of the first bendable unit 241 and the front end of the second bendable unit 242 .

It is worth mentioning that the perfusion inner core 20 also includes a sleeve 29 , and in this embodiment, the sleeve 29 is sleeved on the outside of the first bendable unit 241 . Since the first bendable unit 241 is composed of a snake bone structure, there is a gap in the first bendable unit 241, so that the second working channel 19 and the The interweaving of the third working channel 28 and the sleeve 29 prevent the phenomenon that the flushing liquid penetrates between the second working channel 19 and the third working channel 28 . That is to say, the sleeve 29 ensures the smooth operation of the suction function of the perfusion inner core 20 .

In another embodiment of the present invention, as shown in FIG. 17C , the first bendable unit 241 at the front end may optionally be composed of a spring coil, and correspondingly, the second bendable unit 242 at the rear end may optionally be The ground is composed of snake bone components. That is to say, at this moment, the sleeve 29 is still sleeved on the outside of the first bendable unit 241 , and the second bendable unit 242 is disposed inside the inner core body 21 .

As shown in FIG. 17D and FIG. 17E , the first bendable unit 241 and the second bendable unit 242 are respectively composed of serpentine members and spring coils, so as to meet the bending function of the perfusion inner core 20 .

The working process of the detachable ureteroscope 1 is exemplified: the guiding inner core 30 is installed into the first working channel 18 from the front end of the tubescope main body 10 . The detachable ureteroscope 1 is passed from the patient's urethra to the renal pelvis. The first inner core 31 and the second inner core 32 are pulled out sequentially, and the guiding inner core 30 is completely pulled out of the patient's body.

Secondly, the perfusion inner core 20 is opened from the rear end of the first working channel 18 of the tube lens main body 10 . The operating part 22 of the perfusion inner core 20 and the holding member 12 of the tube scope main body 10 are engaged with each other, so that the inner core main body 21 is fixed in the first working channel 18 . That is to say, the front end of the perfusion core 20 and the tube lens main body 10 are flush with each other. The third working channel 28 of the perfusion inner core 20 leads into the lithotripsy instrument and irrigation fluid, and controls the bending of the bendable member 24 by the control member 23 to extend the primary mirror body 11 and the inner core body 21 to the inside of the patient's renal pelvis, to perform the tasks of crushing and attracting the kidney stones 5 in the patient's body.

Finally, the pulverized kidney stone 5 and flushing fluid are discharged from the patient's body through the second working channel 19 between the main mirror body 11 and the inner core body 21 . The tube scope main body 10 and the perfusion inner core 20 are pulled away from the patient's body to complete the operation.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the purpose of the present invention has been completely and effectively achieved. Those skilled in the art should understand that the above description and the present invention shown in the accompanying drawings The examples are given by way of example only and do not limit the invention. For those of ordinary skill in the technical field of the present invention, without departing from the premise of the present invention, some simple deduction or replacement can also be made, which should be regarded as belonging to the claims submitted by the present invention to determine the scope of patent protection. .

Claims (15)

1. A detachable ureteroscope, comprising:

a guide member;

an outer sheath having an interior passageway therein, said guide member being adapted to be retractably mounted to said outer sheath from a forward end of said outer sheath through said interior passageway to facilitate placement of said outer sheath into a patient's kidney through a patient ureter; and

an inner core adapted to be mounted to the outer sheath after withdrawal of the guide through the inner channel, wherein the inner channel diameter of the outer sheath is larger than the outer diameter of the inner core, the inner channel of the outer sheath being adapted to expel stone and accommodate the inner core, wherein the inner core has a pouring channel adapted to pass flushing fluid and medical instruments and the like for lithotripsy and flushing of stone, wherein the pouring channel and the inner channel are independent of each other, preventing clogging.

2. The detachable ureteroscope according to claim 1, wherein the sheath comprises a sheath body and a traction structure adapted to be mounted to the sheath so that the sheath can pass into the patient's renal pelvis after bending, effectively lithotripsy and expel the stone.

3. The detachable ureteroscope according to claim 2, wherein the sheath body comprises an operating handle, a guide tube and an bendable tube, the operating handle and the bendable tube being respectively connected to both ends of the guide tube, and the bendable tube being located at a front end of the guide tube, the operating handle being located at a rear end of the guide tube.

4. The detachable ureteroscope according to claim 3, wherein the operating handle has a calculus removal port and an inner core port, the inner core port being communicated with the internal passage, the inner core being adapted to enter the internal passage through the inner core port, the calculus removal port being communicated with the internal passage, and the operating handle being adapted to be connected to an external negative pressure suction apparatus through the calculus removal port.

5. The detachable ureteroscope according to claim 4, wherein the bendable tube has a suction port which communicates with the internal passage through which crushed stone is adapted to be sucked into the internal passage so as to be discharged from the calculus discharge port.

6. The split ureteroscope according to claim 5, wherein the bendable tube further comprises a bendable member and a sheath that is adapted to be sleeved over the outer end of the bendable member to ensure the overall tightness of the internal passageway.

7. The detachable ureteroscope according to claim 6, wherein the operating handle has a first connection portion and a mounting slot, the inner core being mounted to the first connection portion of the outer sheath, the mounting slot being located at a lateral end of the operating handle, the mounting slot bottom communicating with the internal channel.

8. A detachable ureteroscope adapted to extend into the interior of a patient's renal pelvis for treating a kidney stone, comprising:

the tube mirror main body comprises a main mirror body and a first working channel, wherein the first working channel penetrates through the front end face and the rear end face of the main mirror body;

a guiding core; and

the infusion inner core comprises an inner core main body and a third working channel, the third working channel penetrates through the inner core main body, a second working channel is arranged between the main lens body and the inner core main body, the kidney stones are infused and crushed through the third working channel, and the kidney stones are discharged out of the body through the second working channel.

9. The detachable ureteroscope according to claim 8, wherein the main body of the tube scope includes a visual member which is provided at the front end of the main body of the tube scope to obtain a field of view extending into the interior of the patient's renal pelvis, the visual member including a visual unit which is provided at the front end face of the main body of the tube scope to obtain a front-end field, an image transmission unit which is spaced apart from the first working channel, the image transmission unit being adapted to be provided in the visual channel, the front end of the image transmission unit being electrically connected to the visual unit, and the rear end extending outside the patient's body.

10. The split ureteroscope according to claim 8, wherein the perfusion core further comprises an operation portion and a plurality of bendable members, the core body is disposed at the front end of the operation portion, the bendable members are disposed inside the core body to drive bending of the core body, the split ureteroscope has two states, in the split ureteroscope insertion state, the tube lens body is sleeved on the guide core to extend to the patient's renal pelvis, in the split ureteroscope operation state, the tube lens body is sleeved on the perfusion core, the operation portion is clamped on the holding portion to fix the core body inside the main lens body, and the perfusion core is driven by the bendable members to drive the tube lens body to bend and extend to the patient's renal pelvis.

11. The split ureteroscope according to claim 10, wherein the bendable member comprises a first bendable unit and a second bendable unit, the first bendable unit being disposed at the front end of the second bendable unit, the rear end of the second bendable unit being connected to the main body.

12. The detachable ureteroscope according to claim 11, wherein the pouring core comprises at least one control member which is provided to the operating portion to control the bending direction of the bendable member located in the patient outside the patient, the control member comprising a first control unit and a second control unit which control the first bendable unit and the second bendable unit, respectively.

13. The detachable ureteroscope according to claim 12, wherein the tubular lens body has a second working channel, the perfusion core has a third working channel, the second working channel is disposed between the core body and the main lens body, the third working channel extends through the core body, the second working channel is a suction channel, and the third working channel is a perfusion channel.

14. The detachable ureteroscope according to claim 13, wherein the perfusion core further comprises a sleeve adapted to be sleeved outside the core body to maintain separation between the third working channel and the second working channel.

15. The detachable ureteroscope according to claim 14, wherein the main body of the tube lens has a first working channel which extends through the main body of the lens, the guide core comprising a first core and a second core which are detachably connected, the second core and the first core being sequentially separated from the first working channel when the detachable ureteroscope is in its inserted state.

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