CN116019414A - Detachable ureteroscope - Google Patents

Abstract

The invention relates to a detachable ureteroscope, which comprises a guide piece, an outer sheath and an inner core, wherein an inner channel is arranged in the outer sheath, the guide piece is suitable for being installed on the outer sheath through the inner channel, the guide piece is pulled out after a combination body of the guide piece and the outer sheath is placed into a kidney through a patient ureteral canal, the inner core is placed into the kidney of a patient through the inner channel, a perfusion channel is arranged in the inner core, the perfusion channel and the inner channel are mutually independent, and the detachable ureteroscope is suitable for realizing stone breaking, washing and stone discharging in the kidney of the patient through the perfusion channel and the inner channel. When the internal channel is blocked by broken stone, the blocking problem can be solved only by extracting the inner core.

Description

Detachable ureteroscope

Technical Field

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

Background

Among medical treatments, ureteroscopy is the most common treatment for kidney stones, which is performed by passing a slender endoscope through the urethra, bladder and ureter into the kidney, and by means of an electronic monitoring system, the operator can clearly observe the stones generated in the kidney, and pulverize the stones and draw them out of the body. The ureteroscope can be used for diagnosing and treating ureter and kidney diseases, the diagnosis and treatment level of ureter diseases can be greatly improved, the hospitalization time of patients is shortened, and the treatment cost is reduced.

Ureteroscope used in ureter operation is divided into ureteroscope and ureteroscope, is a very thin instrument that comprises light guide fiber and working chamber way. The device is mainly used for checking the condition in the vesicoureter and treating pathological changes in the ureter and the kidney, and is commonly called calculus. The traditional open surgery is replaced by the minimally invasive surgery, and the application of the traditional open surgery in urology is very wide. The ureteroscope can be used for treating calculus in bladder and middle and lower sections of ureter through urethra, and the ureteroscope can be used for treating calculus of transurethral and renal type.

The traditional ureteroscope mainly comprises a guide wire, a guide sheath, a visual mirror, a lithotripsy optical fiber and the like, when the traditional ureteroscope is used for treating kidney stones, the guide wire is usually firstly inserted into the kidney of a patient in a blind way, then the guide sheath is inserted along the guide wire, the visual mirror and the lithotripsy optical fiber are inserted into a channel in the guide sheath to carry out visual lithotripsy, and the channel in the guide sheath is used for carrying out perfusion and lithotripsy. However, the traditional ureteroscope has the defects that the suction port is far away from the lithotripsy point because the guide sheath cannot enter the kidney, the calculus is not completely discharged, the calculus discharging efficiency is low, and the required suction force is large. Meanwhile, because the channel inside the traditional ureteroscope is shared by the calculus removing device and the apparatus, the channel for calculus removing is smaller and is very easy to block when calculus removing.

Disclosure of Invention

An advantage of the present invention is to provide a detachable ureteroscope that includes an outer sheath and an inner core that are of a modular construction so that the inner core can be withdrawn to avoid calculus blockage.

Another advantage of the present invention is to provide a detachable ureteroscope that utilizes the active turning of the outer sheath to drive the inner core to passively turn, so that the outer sheath and the inner core act synchronously, facilitating the removal of urinary calculus.

Another advantage of the present invention is to provide a detachable ureteroscope that uses the outer sheath to actively turn to drive the inner core to passively turn, so that the outer sheath and the inner core act synchronously, and stone breaking and stone discharging can be performed simultaneously.

Another advantage of the present invention is to provide a detachable ureteroscope that uses the outer sheath to actively turn to drive the inner core to passively turn, so that the outer sheath and the inner core act synchronously, and broken stones can be immediately discharged without occurrence of stone deposition.

One advantage of the present invention is to provide a detachable ureteroscope that uses the inner core for lithotripsy and flushing, uses the outer sheath for lithotripsy, works in cooperation, and is synchronized, thus greatly improving the lithotripsy speed.

Another advantage of the present invention is to provide a detachable ureteroscope in which multiple channels inside the detachable ureteroscope do not interfere with each other and which can effectively prevent clogging.

Another advantage of the present invention is to provide a detachable ureteroscope that uses a suitable ratio of aspiration channels to perfusion channels that results in high calculus removal efficiency and less tendency to blockage.

Another advantage of the present invention is to provide a detachable ureteroscope that uses the outer sheath to actively turn to drive the inner core to passively turn, so that the suction port is closer to the lithotripsy point, and the required calculus removal attraction is less.

Another advantage of the present invention is to provide a detachable ureteroscope in which the inner core of the detachable ureteroscope can be rotated to break up "point stones.

Another advantage of the present invention is to provide a detachable ureteroscope that uses the outer sheath to actively turn to drive the inner core to passively turn, so that the front end of the detachable ureteroscope can extend into various corners of the renal pelvis to more effectively clean up stones.

Another advantage of the present invention is to provide a detachable ureteroscope that can be smoothly inserted by an operator to the junction of the ureter and the kidney using the wedge-shaped front end of a guide core, and the main body of the ureteroscope can be temporarily used as a passage for connecting the outside of the patient by sequentially withdrawing the guide core of two stages from the patient.

According to one aspect of the present invention, there is provided a detachable ureteroscope including:

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.

According to one embodiment of the invention, the sheath comprises a sheath body and a traction structure adapted to be mounted to the sheath such that the sheath can pass into the patient's renal pelvis after bending, effectively lithotripsy and expel the stone.

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

According to one embodiment of the invention, the operating handle has a stone discharge opening and an inner core opening, the inner core opening is communicated with the inner channel, the inner core is adapted to enter the inner channel through the inner core opening, the stone discharge opening is communicated with the inner channel, and the operating handle is adapted to be connected to an external negative pressure aspirator through the stone discharge opening.

According to one embodiment of the invention, the bendable pipe has a suction opening communicating with the internal passage, through which suction opening the crushed stone is adapted to be sucked into the internal passage for discharge from the stone discharge opening.

According to one embodiment of the invention, the bendable pipe further comprises a bendable member and a jacket adapted to be sleeved on the outer end of the bendable member to ensure the overall tightness of the internal passage.

According to one embodiment of the present invention, the operating handle has a first connection portion and a mounting groove, the inner core is mounted to the first connection portion of the outer sheath, the mounting groove is located at a side end of the operating handle, and a bottom of the mounting groove is communicated with the inner channel.

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

the detachable ureteroscope includes:

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.

According to one embodiment of the invention, the main body includes a visual member disposed at a front end of the main body to obtain a view extending into the interior of the renal pelvis of the patient, the visual member includes a visual unit disposed at a front end surface of the main body to obtain a front view, and having a visual channel spaced apart from the first working channel, the visual unit is adapted to be disposed within the visual channel, the front end of the visual unit is electrically connected to the visual unit, and the rear end extends outside the patient.

According to one embodiment of the present invention, the perfusion core further includes an operation portion and a plurality of bendable members, the core body is disposed at a front end of the operation portion, the bendable members are disposed inside the core body to drive bending of the core body, the detachable ureteroscope has two states, in the insertion state of the detachable ureteroscope, the tube body is sleeved on the guiding core to extend to a renal pelvis of a patient, in the working state of the detachable ureteroscope, the tube body is sleeved on the perfusion core, the operation portion is engaged with the holding portion to fix the core body inside the main lens, and the perfusion core is driven by the bendable members to drive the tube body to bend and extend to the inside of the renal pelvis of the patient.

According to one embodiment of the present invention, the bendable member includes a first bendable unit and a second bendable unit, the first bendable unit is disposed at a front end of the second bendable unit, and a rear end of the second bendable unit is connected to the main mirror.

According to one embodiment of the invention, the perfusion core comprises at least one control member arranged to the operating portion for controlling 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 controlling the first bendable unit and the second bendable unit, respectively.

According to one embodiment of the present invention, the tube mirror 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 mirror body, the third working channel penetrates through the core body, the second working channel is used as a suction channel, and the third working channel is used as a perfusion channel.

According to one embodiment of the invention, the infusion core further comprises a sleeve adapted to be sleeved outside the core body to maintain mutual isolation between the third working channel and the second working channel.

According to one embodiment of the present invention, the main body of the ureteroscope has a first working channel penetrating the main body of the endoscope, the guiding core includes a first core and a second core, the first core and the second core are detachably connected, and when the detachable ureteroscope is in the inserted state, the second core and the first core are sequentially separated from the first working channel.

Drawings

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

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

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

Fig. 4 is a schematic view of a combination 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 view of the mating of a guide and sheath of a detachable ureteroscope according to a preferred embodiment of the present invention.

Fig. 6 is an enlarged partial cross-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 cross-sectional view of a detachable ureteroscope according to a preferred embodiment of the present invention.

Fig. 9 is a schematic view of a detachable ureteroscope sheath placement kidney according to a preferred embodiment of the present invention.

Fig. 10 is a schematic view of a detachable ureteroscope core insertion 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 the bending of a detachable ureteroscope according to a second preferred embodiment of the present invention.

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

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

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

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

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

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

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

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

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

Fig. 18B is a schematic view showing the insertion state of the detachable ureteroscope according to the preferred embodiment of the present invention.

Fig. 19A is a schematic view of one of the surgical procedures of the detachable ureteroscope according to the preferred embodiment of the present invention.

Fig. 19B is a schematic view of a surgical procedure of the detachable ureteroscope according to the preferred embodiment of the present invention.

Fig. 19C is a schematic view of the surgical procedure of the detachable ureteroscope according to the preferred embodiment of the present invention.

Fig. 19D is a schematic view of the surgical procedure of the detachable ureteroscope according to the preferred embodiment of the present invention.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present invention.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, and in another embodiment, the number of elements may be one or more, and the term "a" should not be interpreted as limiting the number.

Fig. 1 to 11 are schematic views of a detachable ureteroscope according to the present invention, in which the structure of the detachable ureteroscope includes a guide 60, an outer sheath 70 and an inner core 80, the inner sheath 70 has an inner channel 71 therein, the guide 60 is adapted to be mounted in the inner channel 71 of the outer sheath 70, and the inner core 80 is adapted to be mounted in the inner channel 71 of the outer sheath 70, in other words, the outer sheath 70 is adapted to be respectively sleeved on the outer ends of the guide 60 and the inner core 80 through the inner channel 71.

When the detachable ureteroscope is used, the guide piece 60 is suitable for being firstly installed in the inner channel 71 of the outer sheath 70, in other words, the outer sheath 70 is sleeved at the outer end of the guide piece 60 through the inner channel 71, then the combination of the guide piece 60 and the outer sheath 70 is placed into the kidney of a patient through the ureteral canal, the guide piece 60 is withdrawn after the placement is completed, the inner core 80 is installed in the inner channel 71 of the outer sheath 70, and the inner core 80 is actively and flexibly driven to bend through the outer sheath 70, so that functions of stone breaking, stone discharging and the like are realized. When the inner channel 71 is blocked by the crushed stone, the blocking problem can be solved by only drawing the inner core 80 out, and after the blocking problem is solved, the inner core 80 is only required to be re-placed along the inner channel 71 of the outer sheath 70, so that the operation time is greatly reduced, and the operation quality is improved.

The guide 60 comprises a first guide unit 61 and a second guide unit 62, the first guide unit 61 being adapted to be used in combination with the second guide unit 62, the first guide unit 61 and the second guide unit 62 being mounted to the sheath 70 through the internal passage 71 in the sheath 70 when in use.

With the direction of insertion advancement of the detachable ureteroscope being in front of the detachable ureteroscope, the guide 60 is adapted to be inserted into the internal passage 71 from the front end of the outer sheath 70 when being mounted to the outer sheath 70, and the front end of the guide 60 is fixed to the front end of the outer sheath 70, and is adapted to be taken out from the rear end of the outer sheath 70 after the outer sheath 70 is inserted. The leading end of the guide 60 is preferably beveled conical so that when the guide 60 is mounted to the outer sheath 70, the outer sheath 70 can more easily enter the patient's ureter through the tapered leading end of the guide 60 until reaching the patient's kidneys.

The first guide unit 61 and the second guide unit 62 of the guide 60 are adapted to be combined together by a wedge structure, and after being mounted to the outer sheath 70, the first guide unit 61 or the second guide unit 62 is adapted to be taken out first, and then the first guide unit 61 is taken out.

The front end of the guide 60 is tapered with the tapered front portion directed in the advancing direction of the split ureteroscope, the tapered rear portion 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 greater than the inner diameter of the inner channel 71, so that the front end of the guide 60 can be held at the front end of the outer sheath 70 when the guide 60 is mounted to the outer sheath 70 through the inner channel 71.

The maximum outer diameter of the tapered rear portion of the guide member 60 is identical to the outer diameter of the outer sheath 70, so that the outer structural curve of the joint is smooth when the guide member 60 is mounted on the outer sheath, and the ureteral mucosa is not scratched due to the structural curve problem of the joint when the guide member 60 is placed, thereby damaging the ureter.

The outer sheath 70 comprises an outer sheath body 72, a traction structure 73 and a visual element 74, the traction structure 73 and the visual element 74 being adapted to be mounted to the outer sheath body 72, the outer sheath 70 being adapted to bend the outer sheath body 72 by means of the traction structure 73, thereby achieving the bending of the outer sheath 70. With the insertion end of the detachable ureteroscope or the direction of advancement within the human body as the front end or forward, the visualization element 74 is adapted to be mounted to the front end of the sheath body 72 to provide a good view. While the front end of the sheath 70 is bent, the visual element 74 can provide the operator with a view of different angles.

The outer sheath 70 is adapted to achieve a forward end of the outer sheath 70 bendable by means of the traction structure 73 such that the forward end of the outer sheath 70 can extend into the renal pelvis inside the patient's kidney after bending, effectively and closely crushing and removing urinary calculus.

The inside of the sheath 70 is also provided with a line channel 75, and the line channel 75 is suitable for passing through an electric wire connected with the visual element 74, so as to provide a light source for the inside of the kidney of the patient, and transmit the images captured by the visual element 74 to an external imaging device through the electric wire, so that an operator can monitor the inside condition of the kidney of the patient in real time, and the operator can more effectively and accurately take medical measures, and the operation efficiency and the treatment effect are improved.

In addition, the outer sheath 70 further includes a sealing ring 76, the sealing ring 76 is disposed in the inner channel 75 of the outer sheath body 72 and located at the rear end of the stone exhaust port 7211, and the sealing ring 76 is adapted to perform a sealing function.

The center 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, the through hole 761 is suitable for the flushing pipe 82 of the inner core 80 to pass through, and the sealing ring 76 is suitable for sealing the inner channel 71 after the inner core 80 enters the inner channel 71, so as to ensure the overall tightness of the outer sheath 70 and ensure the normal operation of sucking and discharging stones.

The sheath 70 is adapted to suck out broken stones in the kidney of a patient through the internal passage 71 by a negative pressure suction device connected to the stone discharge port, and the stones are adapted to be sucked into the internal passage 71 through the suction port 7231 when sucked, and the sealing ring 76 prevents the stones from being excessively dispersed in the operation handle 721 when the stones enter the operation handle 721 through the internal passage 71, and blocks the sucked stones to be gathered near the stone discharge port 7211, thereby facilitating the discharge. The sheath body 72 includes an operating handle 721, a guide tube 722, and a bendable pipe 723, both ends of the guide tube 722 being connected to the operating handle 721 and the bendable pipe 723, respectively. In other words, the front end of the operating handle 721 is connected to one end of the guide tube 722, and the rear end of the bendable tube 723 is connected to the other end of the guide tube 722.

The front end of the operating handle 721 is connected to one end of the guide tube 722, the rear end of the operating handle 721 has an inner core opening 7212, the inner core opening 7212 extends toward the inside of the operating handle 721 and is communicated with the inner channel 71, the inner core opening 7212 is adapted to allow the inner core 80 to pass through, and the inner core 80 is adapted to be placed into the inner channel 71 through the inner core opening 7212. In addition, the operating handle 721 has a stone discharging opening 7211, a mounting groove 7213 and a line opening 7215 at the side end, the bottom of the mounting groove 7213 is connected to the inner channel 71, the mounting groove 7213 is adapted to mount the traction structure 73, the stone discharging opening 7211 and the line opening 7215 extend toward the inside of the operating handle 721 to be respectively connected to the inner channel 71 and the line channel 75, and the operating handle 721 is adapted to be connected to a negative pressure aspirator through the stone discharging opening 7211 to suck broken stones in the kidney of the patient through the negative pressure aspirator. The line path 75 is adapted to pass a power supply line to connect the visual element 74 with an external image forming apparatus by a wire, and the sheath body 72 is adapted to connect with an external apparatus through the line port 7215.

The rear end of the operating handle 721 is located at the periphery of the inner core opening 7212, and further comprises a first connecting portion 7214, and the first connecting portion 7214 surrounds the inner core opening 7212. The inner core 80 is adapted to retain the inner core 80 within the inner channel 71 of the outer sheath 70 by the primary connection 7214 when the outer sheath 70 is mounted thereto.

The rear end of the bendable pipe 723 is connected to the guide pipe 722, the front end of the bendable pipe 723 is provided with a suction port 7231 and a visual member mounting groove 7232, the suction port 7231 extends towards the inside of the bendable pipe 723 so as to be communicated with the internal channel 71, the bottom of the visual member mounting groove 7232 is communicated with the line channel 75, the visual member mounting groove 7232 is suitable for mounting the visual member 74, the visual member 74 comprises a visual unit and an illumination unit, the illumination unit is suitable for providing a good visual environment for an operator to perform surgical treatment, and the visual unit is suitable for capturing an environmental image and transmitting to an external image imaging device and is matched with the illumination unit so as to provide a good operation view for the operator.

In other words, in the outer sheath 70, the suction port 7231 and the stone exhaust port 7211 are respectively located at both ends of the inner channel 71, and are adapted to suck the stone crushed in the kidney of the patient into the inner channel 71 through the suction port 7231 by connecting a negative pressure suction device to the stone exhaust port 7211, and to exhaust the stone through the stone exhaust port 7211 communicating with the inner channel. The visual member 74 is installed in the visual member installation groove 7232, and the electric wire connected with the visual member 74 is connected with the external image imaging device through the line channel 75 communicated with the bottom of the visual member installation groove 7232, so that an operator can monitor the condition inside the kidney of the patient in real time, and can timely adopt the most reasonable and effective method in operation, thereby improving the operation efficiency and the operation quality, and the line channel 75 and the internal channel 71 are mutually independent and do not interfere with each other, so that the line channel 75 does not influence the calculus removing efficiency of the internal channel 71. Compared with the traditional ureteroscope, the diameter of the inner channel 71 of the detachable ureteroscope is larger, the calculus removing efficiency is higher, and the ureteroscope is not easy to block.

The rear end of the bendable pipe 723 is connected to the guide pipe, the bendable pipe 723 comprises a bendable member 7233 and a housing 7234, the housing 7234 is adapted to be sleeved on the outer end of the bendable member 7233, the bendable member 7233 is preferably a spring ring, the inner diameter of the bendable member 7233 is consistent with the diameter of the inner channel 71, the housing 7234 is internally provided with a mounting cavity, the inner diameter of the mounting cavity is larger than the inner diameter of the inner channel 71, and the bendable member 7233 is adapted to be mounted in the mounting cavity of the housing 7234, in other words, the housing 7234 is sleeved on the outer end of the bendable member 7233. While the coil spacing of the deflectable member 7233 increases gradually in the front direction from the rear end of the deflectable member 7233.

In other words, the spring turns of the bendable member 7233 are changed from dense to dense along the front direction from the rear end of the bendable member 7233, and the spring turns of the bendable member 7233 at the junction of the bendable member 723 and the guide pipe 722 are relatively dense, so that the connection strength of the bendable member 723 at the junction with the guide pipe 722 is increased, and the bending strength is also increased, so that the connection is more firm.

The spring coils of the deflectable member 7233 are tapered from the rear end of the deflectable member 7233 in the direction of the front end, which also makes the front end of the deflectable member 7233 more easily bendable than the rear end, so that the operator, when controlling the bending of the deflectable member 723 by means of the traction structure 73, takes less traction as the angle of bending the deflectable member 723 is smaller and the traction point is positioned closer to the front end of the deflectable member 723. Thus, when the traction point of the light structure 73 is provided at the front end of the bendable pipe 723, it is possible to make the operator feel easier and more labor-saving in use.

The outer sleeve 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 is bendable and does not damage the overall tightness of the inner channel 71 of the outer sheath 70, thereby affecting the calculus removal effect.

The traction structure 73 includes a control member 731 and a traction wire 732, the control member 731 is adapted to be mounted to the operation handle 721 of the sheath body 72 through the mounting groove 7213, and one end of the traction wire 723 is adapted to be connected to the control member 731, and the other end is adapted to be connected to the inside of the front end of the bendable pipe 723 of the sheath body 72 after passing through the internal passage 71. Is adapted to control the contraction and relaxation of the pull wire 732 by controlling the control member 731, such that the pull wire 732 connected to the control member 731 pulls the bendable pipe 723 to bend, thereby further realizing the bending of the outer sheath 70. The number of the drawing wires 732 is optionally two, three, and four, when the number of the drawing wires 732 is two, the drawing wires 732 may control the bendable pipe 723 to bend in two directions, and when the number of the drawing wires 732 is three, the drawing wires 732 may achieve the bendable pipe 723 to bend in three directions through drawing control, and when the number of the drawing wires 732 is four, the drawing wires 732 may achieve the bendable pipe 723 to bend in four directions through drawing control, and the more the number of the drawing wires 732, the more the bendable direction of the bendable pipe 723, the more the bendable pipe 723 is in use.

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

The inner core 80 is internally provided with a perfusion channel 81, and the perfusion channel 81 is suitable for passing medical instruments such as flushing liquid, lithotripsy optical fiber and the like so as to lithotripsy and flush stones in the kidney of a patient.

The front end of the perfusion tube 83 is connected to the irrigation tube 82, the rear end of the perfusion tube 83 has an instrument inlet 832, and the side end of the perfusion tube 83 has a perfusion opening 831, the perfusion opening 831 and the instrument inlet 832 are both connected to the perfusion channel 81, and the perfusion opening 831 is suitable for passing irrigation fluid to irrigate the crushed stone in the kidney of the patient. The device inlet 832 is suitable for being used for the entrance of crushed stone optical fibers and some other medical devices to crush stone, clean and the like, and a sealing part 834 is arranged at the periphery of the device inlet 832, the sealing part 834 surrounds the device inlet 832, and the sealing cap 84 is suitable for being installed on the perfusion tube 83 through the sealing part 834 and is used for sealing the device inlet 832 after the crushed stone optical fibers and other medical devices are extracted from the crushed stone, so that the integral tightness of the separable ureteroscope is ensured, and the smooth proceeding of negative pressure suction and stone discharge is ensured.

The junction between the irrigation tube 82 and the irrigation tube 83 has a second connection portion 833, and the inner core 80 is adapted to be secured to the first connection portion 7214 of the operating handle 721 via the second connection portion 833 when the inner core 80 is mounted to the outer sheath 70 via the inner channel 71.

One end of the flushing pipe 82 is connected to the pouring pipe 83, the other end of the flushing pipe 82 is provided with a flushing port 821, the flushing port 821 is communicated with the pouring channel 81, flushing fluid flows out from the flushing port 821 after entering the pouring channel 81 from the pouring port 831 of the pouring pipe 83, so as to flush broken stone and crushed stone, and the crushed stone is sucked through the internal channel 71 of the outer sheath 70 and then discharged.

When the inner core 80 is mounted to the outer sheath 70, the flushing pipe 82 is accommodated in the inner passage of the outer sheath 70, and the inner diameter of the inner passage 71 is much larger than the outer diameter of the flushing pipe 82 of the inner core 80, so that the inner passage 71 still has enough space to perform the calculus removal when the inner core 80 is mounted to the inner passage 71 of the outer sheath 70, ensuring the smooth progress of the calculus removal.

The detachable ureteroscope is a combined ureteroscope, and the attractive function of the detachable ureteroscope is realized by combining the outer sheath 70 and the inner core 80 and adopting different routes, so that the inner channel 71 and the perfusion channel 81 are mutually independent and are not influenced, and meanwhile, the proper ratio of the inner channel 71 to the perfusion channel 81 is ensured, and the blockage of stones is avoided. 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, thereby being beneficial to operations such as stone breaking, stone discharging and the like.

The detachable ureteroscope is adapted to bend by bending of the outer sheath 70, thereby bending the inner core 80 disposed within the inner channel 71 of the outer sheath 70. The sheath of traditional ureteroscope can only enter into the position of kidney and ureter way juncture, consequently behind the rubble because far away from the rubble point, cause the calculus removal unclean, calculus removal inefficiency easily, simultaneously because far away from the rubble point, the appeal that needs when the calculus removal is great, the easy damage patient pipeline mucosa. Compared with the traditional ureteroscope, the detachable ureteroscope not only can enter the kidney, but also can effectively clean stubborn stones at some dead angles because the outer sheath 70 bends to drive the inner core 80 to bend when the detachable ureteroscope is used for entering the kidney through the ureteral canal, and the front end of the detachable ureteroscope can extend to some dead angles of the renal pelvis through the bending property.

In the detachable ureteroscope, the outer sheath 70 is actively bent, and the inner core 80 is passively bent, so that the outer sheath 70 moves simultaneously with the inner core 80. When in use, the outer sheath 70 is utilized to actively turn to drive the inner core 80 to passively turn, so that the action of the outer sheath 70 and the action of the inner core 80 are synchronous, broken stones and stone discharge can be performed simultaneously, broken stones can be immediately discharged, and no broken stone deposition phenomenon can occur. After the inner core 80 is washed by broken stone, the outer sheath 70 can be immediately sucked, and the broken stone points are positioned near the suction port 7231, so that broken stone can be easily sucked and discharged during the process of sucking and discharging the broken stone, the stone discharge is clean, the stone discharge efficiency is low, and meanwhile, the pressure required for sucking is low, and the damage to kidney mucosa of a patient is avoided. In addition, the front end of the detachable ureteroscope can extend into all corners of the renal pelvis, so that stones can be cleaned more effectively. At the same time, the inner core 80 is rotatable to break up stones at the "point of the" drill ".

As shown in fig. 12 to 13, which are schematic views of a second detachable ureteroscope according to the present invention, the structure of the detachable ureteroscope includes a guide 60A, an outer sheath 70A and an inner core 80A, the outer sheath 70A has an inner channel 71A therein, the guide 60A is adapted to be mounted in the inner channel 71A of the outer sheath 70, and the inner core 80A is adapted to be mounted 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 60A and the inner core 80A through the inner channel 71A.

The detachable ureteroscope in the second embodiment has a similar structure to that in the first embodiment, and the same principle of operation is the greatest difference in the structure of the outer sheath 70A.

In the detachable ureteroscope according to the second embodiment, the outer sheath 70A includes a sheath body 72A, a traction structure 73A and a visual element 74A, the traction structure 73A and the visual element 74A are adapted to be mounted on the sheath body 72A, and the outer sheath 70A is adapted to bend the sheath body 72A by the traction structure 73A, so as to achieve the bending of the outer sheath 70A. With the insertion end of the detachable ureteroscope or the direction of advancement within the human body as the front end or forward, the visualization element 74A is adapted to be mounted to the front end of the sheath body 72A to provide a good view.

In addition, the inside of the sheath 70A further has a line channel 75A, and the line channel 75A is suitable for passing through the electric wire connected to the visual element 74A, so as to provide a light source for the inside of the kidney of the patient, and transmit the captured image of the visual element 74A to the external imaging device through the electric wire, so that the operator can monitor the inside of the kidney of the patient in real time, and thus, the operator can take medical measures more effectively and accurately, and the operation efficiency and the treatment effect are improved.

The sheath body 72A includes an operating handle 721A, a guide tube 722A, and a bendable pipe 723A, both ends of the guide tube 722A are connected to the operating handle 721A and the bendable pipe 723A, respectively. 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, the rear end of the operating handle 721A has an inner core opening 7212A, the inner core opening 7212A extends toward the inside of the operating handle 721A and is communicated with the inner channel 71A, the inner core opening 7212A is adapted to allow the inner core 80A to pass therethrough, and the inner core 80A is adapted to be inserted into the inner channel 71A through the inner core opening 7212A. In addition, the operating handle 721A has a stone discharging opening 7211A, a mounting groove 7213A and a line opening 7215A, wherein the bottom of the mounting groove 7213A is connected to the internal channel 71A, the mounting groove 7213A is adapted to mount the traction structure 73A, the stone discharging opening 7211A and the line opening 7215A extend toward the inside of the operating handle 721A to be respectively connected to the internal channel 71A and the line channel 75A, and the operating handle 721A is adapted to be connected to a negative pressure aspirator through the stone discharging opening 7211A to suck broken stones in the kidney of the patient through the negative pressure aspirator. The line passage 75A is adapted to pass a power supply line to connect the visual element 74A with an external image forming apparatus by a wire, and the sheath main body 72A is adapted to connect with an external apparatus through the line port 7215A.

The rear end of the operating handle 721A is located at the periphery of the inner core opening 7212A, and further comprises a first connecting portion 7214A, and the first connecting portion 7214A surrounds the inner core opening 7212A. The outer sheath 70A is adapted to fixedly retain the inner core 80A within the inner channel 71A of the outer sheath 70A via the first connection 7214A when the inner core 80A is mounted to the outer sheath 70A.

The rear end of the bendable pipe 723A is connected to the guide pipe 722A, the front end of the bendable pipe 723A has a suction port 7231A and a visual member mounting groove 7232A, the suction port 7231A extends toward the inside of the bendable pipe 723A to communicate with the internal passage 71A, the bottom of the visual member mounting groove 7232A communicates with the line passage 75A, the visual member mounting groove 7232A is adapted to mount the visual member 74A, the visual member 74A includes a visual unit adapted to provide a good visual environment for surgical treatment and an illumination unit adapted to capture an environmental image and transmit to an external image imaging apparatus to cooperate with the illumination unit to provide a good operational field of view.

In other words, in the outer sheath 70A, the suction port 7231A and the stone discharge port 7211A are respectively located at both ends of the inner passage 71A, and are adapted to suck stones crushed in the kidney of the patient into the inner passage 71A through the suction port 7231A by connecting a negative pressure suction device to the stone discharge port 7211A, and discharge the stones through the stone discharge port 7211A communicating with the inner passage. The visual element 74A is installed in the visual element installation groove 7232A, and the electric wire connected with the visual element 74A is connected with an external image imaging device through the line channel 75A communicated with the bottom of the visual element installation groove 7232A, so that an operator can monitor the condition inside the kidney of the patient in real time, and can timely adopt the most reasonable and effective method in operation, thereby improving the operation efficiency and the operation quality, and meanwhile, because the line channel 75A and the internal channel 71A are mutually independent and do not interfere with each other, the existence of the line channel 75A does not affect the stone discharging efficiency of the internal channel 71A, and compared with the traditional ureteroscope, the diameter of the internal channel 71A of the detachable ureteroscope is larger, the stone discharging efficiency is higher, and the blocking is difficult.

The rear end of the bendable pipe 723A is connected to the guide pipe, the bendable pipe 723A comprises a bendable member 7233A and a housing 7234A, the housing 7234A is adapted to be fitted over the outer end of the bendable member 7233A, the bendable member 7233A is preferably a snake bone pipe, the inner diameter of the bendable member 7233A coincides with the diameter of the inner passage 71A, the housing 7234A has a mounting cavity therein, the inner diameter of which is larger than the inner diameter of the inner passage 71A, and the bendable member 7233A is adapted to be mounted in the mounting cavity of the housing 7234A, in other words, the housing 7234A is fitted over the outer end of the bendable member 7233A. While the snake bone condyle spacing of the flexible component 7233A tapers in the anterior direction from the posterior end of the flexible component 7233A.

In other words, the change in the width of the snake bone segments of the bendable member 7233A from the rear end of the bendable member 7233A in the front direction is narrowed by the width, and the snake bone segments of the bendable member 7233A at the junction of the bendable member 723A and the guide tube 722A are wider, so that the junction of the bendable member 723A and the guide tube 722A is stronger in connection strength, less likely to break, more firm in connection, and also stronger in bending strength, but the bendable angle of the rear end of the bendable member 7233A is reduced.

The narrowing of the snake bone canal condyle of the bendable member 7233A from the rear end of the bendable member 7233A in the front direction also allows the front end of the bendable member 7233A to bend more easily than the rear end, so that the smaller the angle at which the bendable member 723A bends, the closer the traction point position is to the front end of the bendable member 723A, the less traction force is spent by the operator when controlling the bending of the bendable member 723A with the traction structure 73A. Thus, when the traction point of the light structure 73A is provided at the front end of the bendable pipe 723A, it is possible to make the operator feel easier and more labor-saving in use.

The outer sleeve 7234A is sleeved on the outer end of the bendable member 7233A and connected with the guide tube 722A, so that the outer sheath main body 72A is bendable and does not damage the overall sealing performance of the inner channel 71A of the outer sheath 70A, thereby affecting the calculus removal effect.

The pulling structure 73A includes a control member 731A and a pulling wire 732A, the control member 731A being adapted to be mounted to the operating handle 721A of the sheath body 72A through the mounting groove 7213A, one end of the pulling wire 723A being adapted to be connected to the control member 731A, and the other end being adapted to be connected to the inside of the front end of the bendable pipe 723A of the sheath body 72A through the inner passage 71A.

Is adapted to control the contraction and relaxation of the pull wire 732A by controlling the control member 731A, so that the pull wire 732A connected to the control member 731A pulls the bendable pipe 723A to bend, thereby further realizing the bendable front end of the outer sheath 70A.

The outer sheath 70A of the split ureteroscope according to the second embodiment is drawn by a drawing wire to bend a snake bone, and the bending principle is the same as that of the first embodiment, except that the spring ring has elasticity and can automatically rebound after drawing and bending, so that the number of the drawing wire 732 and the control piece 731 of the split ureteroscope according to the first embodiment is not limited, and is preferably equal to or greater than one, because the bending effect can be achieved even if the split ureteroscope is single.

In the second embodiment, the snake bone tube has no elasticity and cannot rebound automatically after being pulled and bent, so that the pair of the pulling wire 732A and the control part 731A of the detachable ureteroscope in the second embodiment is limited in number, and the snake bone tube needs to be in pair to be returned to its original position by being pulled in the other direction after being pulled and bent in one direction. Although the number of the traction wire 732 and the control part 731 of the split ureteroscope of the first embodiment and the traction wire 732A and the control part 731A of the split ureteroscope of the second embodiment are different from each other, both the function of bending and the direction of bending control can be achieved.

As shown in fig. 14, a schematic view of a third detachable ureteroscope according to the present invention is provided, wherein the structure of the detachable ureteroscope includes a guide 60B, an outer sheath 70B and an inner core 80B, the inner sheath 70B has an inner channel 71B therein, the guide 60B is adapted to be mounted in the inner channel 71B of the outer sheath 70, and the inner core 80B is adapted to be mounted in the inner channel 71B of the outer sheath 70B, in other words, the outer sheath 70B is adapted to be respectively sleeved on the outer ends of the guide 60B and the inner core 80B through the inner channel 71B.

The detachable ureteroscope in the third embodiment has a similar structure to that in the second embodiment, and the same working principle is the greatest difference that the structure of the outer sheath 70B is different.

In the detachable ureteroscope according to the third embodiment, the outer sheath 70B includes a sheath body 72B, a traction structure 73B and a visual element 74B, the traction structure 73B and the visual element 74B are adapted to be mounted on the sheath body 72B, and the outer sheath 70B is adapted to bend the sheath body 72B by the traction structure 73B, so that the outer sheath 70B is bendable. With the insertion end of the detachable ureteroscope or the direction of advancement within the human body as the front end or forward, the visualization element 74B is adapted to be mounted to the front end of the sheath body 72B to provide a good view.

In addition, the inside of the sheath 70B further has a line channel 75B, and the line channel 75B is suitable for passing through the electric wire connected to the visual element 74B, so as to provide a light source for the inside of the kidney of the patient, and transmit the captured image of the visual element 74B to the external imaging device through the electric wire, so that the operator can monitor the inside of the kidney of the patient in real time, so that the operator can take medical measures more effectively and accurately, and the operation efficiency and the treatment effect are improved.

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

The front end of the operating handle 721B is connected to one end of the guide tube 722B, the rear end of the operating handle 721B has an inner core opening 7212B, the inner core opening 7212B extends toward the inside of the operating handle 721B and is communicated with the inner channel 71B, the inner core opening 7212B is adapted to allow the inner core 80B to pass therethrough, and the inner core 80B is adapted to be inserted into the inner channel 71B through the inner core opening 7212B. In addition, the operating handle 721B has a stone discharging opening 7211B, a mounting groove 7213B and a line opening 7215B, wherein the bottom of the mounting groove 7213B is connected to the inner channel 71B, the mounting groove 7213B is adapted to mount the traction structure 73B, the stone discharging opening 7211B and the line opening 7215B extend toward the inside of the operating handle 721B to be respectively connected to the inner channel 71B and the line channel 75B, and the operating handle 721B is adapted to be connected to a negative pressure aspirator through the stone discharging opening 7211B to suck broken stones in the kidney of the patient through the negative pressure aspirator. The line passage 75B is adapted to pass a power supply line to connect the visual element 74B with an external image forming apparatus by a power line, and the sheath main body 72B is adapted to connect with an external apparatus through the line port 7215B.

The rear end of the operating handle 721B is located at the periphery of the inner core opening 7212B, and further comprises a first connecting portion 7214B, and the first connecting portion 7214B surrounds the inner core opening 7212B. The inner core 80B is adapted to fixedly retain the inner core 80B within the inner channel 71B of the outer sheath 70B by the primary connection 7214B when the outer sheath 70B is mounted thereto.

The rear end of the bendable pipe 723B is connected to the guide pipe 722B, the front end of the bendable pipe 723B has a suction port 7231B and a visual member mounting groove 7232B, the suction port 7231B extends toward the inside of the bendable pipe 723B to communicate with the internal passage 71B, the bottom of the visual member mounting groove 7232B communicates with the line passage 75B, the visual member mounting groove 7232B is adapted to mount the visual member 74B, the visual member 74B includes a visual unit adapted to capture an environmental image and transmit to an external image imaging apparatus, and a lighting unit adapted to cooperate with the lighting unit to provide a good operating view for the operator.

In other words, in the outer sheath 70B, the suction port 7231B and the stone discharge port 7211B are respectively located at both ends of the inner channel 71B, and are adapted to suck stones crushed in the kidney of the patient into the inner channel 71B through the suction port 7231B by connecting a negative pressure suction device to the stone discharge port 7211B, and discharge the stones through the stone discharge port 7211B communicating with the inner channel. The visual piece 74B is installed in the visual piece installation groove 7232B, the electric wire connected with the visual piece 74B is connected with an external image imaging device through the line channel 75B communicated with the bottom of the visual piece installation groove 7232B, so that an operator can monitor the condition inside the kidney of the patient in real time, the operator can timely adopt the most reasonable and effective method in operation, the operation efficiency and the operation quality are improved, meanwhile, because the line channel 75B and the internal channel 71B are mutually independent and do not interfere with each other, the existence of the line channel 75B does not affect the stone discharging efficiency of the internal channel 71B, and compared with a traditional ureteroscope, the diameter of the internal channel 71B of the detachable ureteroscope is larger, the stone discharging efficiency is higher, and the blocking is difficult.

The rear end of the bendable pipe 723B is connected to the guide pipe, the bendable pipe 723B includes a bendable member 7233B and a housing 7234B, the housing 7234B is adapted to be fitted into the outer end of the bendable member 7233B, the bendable member 7233B includes a snake bone pipe and a coil spring, the coil spring is installed in the snake bone pipe, the inner diameter of the bendable member 7233B is larger than the inner diameter of the inner passage 71B, the housing 7234B has a mounting cavity therein, the inner diameter of the mounting cavity is larger than the inner diameter of the inner passage 71B, and is larger than the inner diameter of the bendable member 7233B, the bendable member 7233B is adapted to be mounted into the mounting cavity of the housing 7234B, in other words, the housing 7234B is fitted into the outer end of the bendable member 7233B, and the snake bone pipe is fitted into the outer end of the coil spring. While the snake bone condyle spacing of the flexible component 7233B tapers in the anterior direction from the posterior end of the flexible component 7233B.

In other words, the width of the snake bone segments of the bendable member 7233B is changed from the rear end of the bendable member 7233B to the front end, and the width of the snake bone segments of the bendable member 7233B at the connection point of the bendable member 723B and the guide tube 722B is relatively wide, so that the connection strength of the bendable member 7233B at the connection point of the bendable member 723B and the guide tube 722B is relatively high, and the connection is relatively firm. In addition, because the spring ring is arranged in the snake bone tube, the overall strength of the snake bone tube is greatly improved, the possibility of fracture of the snake bone tube during traction bending is reduced, and the applicability of the bendable pipe 723B is improved.

The narrowing of the snake bone segments of the bendable member 7233B from the rear end of the bendable member 7233B in the front direction also makes the front end of the bendable member 7233B easier to bend than the rear end, so that the smaller the angle at which the bendable member 723B bends, the closer the traction point position is to the front end of the bendable member 723B, the less traction force is spent by the operator when controlling the bending of the bendable member 723B with the traction structure 73B. Thus, when the traction point of the light structure 73B is provided at the front end of the bendable pipe 723B, it is possible to make the operator feel easier and more labor-saving in use. And because the structure of the bendable piece 7233B is that the snake bone tube is sleeved at the outer end of the spring ring, the bendable piece 7233B formed by the snake bone tube and the spring ring also has resilience capability after traction, and an operator is not required to traction and reset again, so that the outer sheath 70B is more convenient and quick in use, and the usability is greatly improved.

The outer sleeve 7234B is sleeved on the outer end of the bendable member 7233B and connected with the guide tube 722B, so that the outer sheath body 72B is bendable and does not damage the overall sealing performance of the inner channel 71B of the outer sheath 70B, thereby affecting the calculus removal effect.

The pulling structure 73B includes a control member 731B and a pulling wire 732B, the control member 731B being adapted to be mounted to the operating handle 721B of the sheath body 72B through the mounting groove 7213B, one end of the pulling wire 723B being adapted to be connected to the control member 731B, and the other end being adapted to be connected to the inside of the front end of the bendable pipe 723B of the sheath body 72B through the inner passage 71B.

Is adapted to control the contraction and relaxation of the pull wire 732B by controlling the control member 731B, so that the pull wire 732B connected to the control member 731B pulls the bendable pipe 723B to bend, thereby further realizing the bendable front end of the outer sheath 70B.

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 adapted to be inserted from the urethra of a patient into the kidney of the patient to complete a subsequent lithotripsy procedure. The detachable ureteroscope 1 is suitable for treating a kidney stone 5. The kidney stones 5 can be discharged from the body of the patient from the detachable ureteroscope 1, thereby achieving the purpose of operation. No blockage occurs during the process of removing the kidney stones 5 from the patient.

For ease of description, the insertion direction of the detachable ureteroscope 1 is defined as anterior and the insertion direction away from the detachable ureteroscope 1 is defined as posterior. The patient's renal pelvis is defined as inferior near the inferior side and as superior near the superior side. The detachable ureteroscope 1 has two states, an insertion state and an operating state. The state in which the detachable ureteroscope 1 is inserted from outside the patient's body between the ureter and the junction of the renal pelvis is defined as an inserted state, and the state in which the detachable ureteroscope 1 is extended inside the patient's renal pelvis to treat the kidney stones 5 until the kidney stones 5 are discharged from outside the patient's body is defined as an operating state.

The detachable ureteroscope 1 comprises a main body 10, a perfusion core 20 and a guide core 30. The infusion core 20 and the guide core 30 are interchangeably disposed within the borescope body 10. Specifically, in the inserted state of the detachable ureteroscope 1, the guide core 30 is located inside the tube lens body 10. In the working state of the detachable ureteroscope 1, the guiding inner core 30 is separated from the tube lens main body 10, and the pouring inner core 20 is positioned inside the tube lens main body 10. In other words, the perfusion core 20 and the guide core 30 are respectively located within the tube scope body 10 according to different states of the detachable ureteroscope 1.

It should be noted that the front end of the guiding core 30 has a wedge structure to keep the guiding core 30 always located at the front end of the borescope body 10. That is, in the inserted state of the detachable ureteroscope 1, the front end of the guide core 30 is limited to the front end of the tube lens body 10. In other words, the front end of the guide core 30 is held at the front end of the tube scope body 10, and the tube scope body 10 and the guide core 30 together enter the ureter of the patient close to the kidney of the patient. That is, the borescope body 10 is delivered to a predetermined surgical site within a patient by virtue of the wedge-shaped front end of the guide core 30.

The tube mirror body 10 includes a main mirror body 11 and has 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 11 to the rear end of the main mirror 11. That is, the first working channel 18 penetrates the main lens body 11. The infusion core 20 and the guide core 30 are interchangeably located in the first working channel 18. In other words, in the inserted state of the detachable ureteroscope 1, the guiding core 30 is located within the first working channel 18; in the operational state of the detachable ureteroscope 1, the inner perfusion core 20 is located within the first working channel 18.

The borescope body 10 further comprises a grip 12. The grip 12 provides a gripping space. The grip 12 is integrally connected to the main mirror 11. The first working channel 18 extends through the grip 12. The grip 12 is located at the rear side of the main scope 11 to provide an operator with an operation space in the inserted state and the working state of the detachable ureteroscope 1. That is, in the inserted state and the working state of the detachable ureteroscope 1, the main scope 1 is always located inside the ureter of the patient, and the grip 12 is always located outside the patient.

The main mirror 11 and the holding member 12 are made of different materials, and the holding member 12 is operated outside the body because the main mirror 11 requires an in-body operation. The borescope body 10 also has to fulfill the purpose of being bendable. Therefore, the main mirror 11 is made of a skin-friendly material, and the holding member 12 only needs to provide a holding space for an operator, i.e. a material with a large friction force can be selected.

In particular, in the present embodiment, the first working channel 18 has a semicircular cross-sectional shape at the front end surface of the main mirror 11. The cross-sectional shape of the first working channel 18 at the front end surface of the main mirror 11 is optionally formed of a circle, a crescent, or the like.

The guide core 30 includes a first core 31 and a second core 32. The first core 31 is detachably connected to the second core 32. In the inserted state of the detachable ureteroscope 1, the guiding core 30 is located within the first working channel 18. The first core 31 is closely attached to the second core 32. When the detachable ureteroscope 1 is switched to the working state, the guiding core 30 is withdrawn from the first working channel 18. The second core 32 is first withdrawn, and the front end of the first core 31 is still limited to the front end of the main mirror 11. The first core 31 is then rotated to withdraw the first core 31 from the first working channel 18. That is, the guide core 30 is completely withdrawn from the first working channel 18 so far. In other words, the guide core 30 is completely withdrawn from the patient.

Further, the first core 31 has a wedge-shaped front end. By pulling the second core 32 and the first core 31 in this way, the guiding core 30 is completely pulled out of the first working channel 18. When the second core 32 is withdrawn, the first core 31 is still constrained by the front end of the main mirror 11. The table top of the first inner core 31 may be corresponding to the first working channel 18 by axially rotating the first inner core 31 by 180 ° by an operator, and the cross-sectional size of the table top is smaller than that of the first working channel 18, so as to ensure that the first inner core 31 can be smoothly taken out of the patient from the first working channel 18.

The tube mirror main body 11 includes an adjusting unit 15, and the adjusting unit 15 is disposed on the grip 12. The regulating unit 15 is close to a suction passage to control the pressure of the suction passage. That is, the operator realizes the suction pressure extending to the inside of the patient for the suction passage by controlling the adjusting unit 15. In other words, the regulating unit 15 functions to regulate the suction of negative pressure.

The tube mirror main body 10 includes a viewing member 14, and the viewing member 14 is disposed on the main mirror body 11. The visualization means 14 play a role in visualizing the detachable ureteroscope 1. In other words, visualization of the lithotripsy of the detachable ureteroscope 1 within the patient's renal pelvis is achieved by the visualization means 14.

The vision member 14 further includes a vision element 141 and a light source 144, and the vision element 141 and the light source 144 are disposed on the front end surface of the main mirror 11. That is, the visual element 141 and the light source 144 are always positioned at the forefront end in the operation state of the detachable ureteroscope 1 to provide a visual stone suction process. The visual element 141 is adapted to acquire a front view of the main mirror 11. The light source 144 is adapted to provide the illumination range required by the visual element 141 to obtain a field of view, so as to facilitate the visual element 141 to obtain a clearer field of view.

The visual element 14 further includes an image transmission unit 143 and has a visual channel 142. The image transmission unit 143 is communicated with the visual element 141 through the visual channel 142. That is, the viewing channel 142 has one end connected to the viewing element 141 and the other end connected to the image transmission unit 143. The visual channel 142 is located on the grip 12, and is connected from the grip 12 to the front end surface of the main mirror 11. The image transmission unit 143 is located outside the patient and is adapted to be connected to the visual element 141 through the visual channel 142.

The viewing channel 142 is independent of the first working channel 18. That is, the viewing channel 142 is spaced from the first working channel 18. In other words, the viewing channel 142 and the first working channel 18 are not in communication with each other. The image transmission unit 143 is adapted to feed back the field of view acquired by the visual element 141 outside the patient, that is, the operator can acquire the field of view acquired by the visual element 141 through the image transmission unit 143. In other words, the operator can view the field of view acquired from within the patient outside the patient's body.

It should be noted that the tube mirror main body 10 has a table top 16, the table top 16 is disposed at the front end of the main mirror body 11, the visual member 14 is located on the table top 16, and further, the visual element 141 is disposed on the table top 16. In the inserted state of the detachable ureteroscope 1, the rear end of the first core 31 is blocked by the table-board 16. The operation of the detachable ureteroscope 1 to achieve the insertion state from the outside of the patient to the inside of the patient is illustrated. The operator couples the guide core 30 and the borescope body 10 to each other outside the patient's body. In other words, the guide core 30 is fixed to the tube mirror main body 10 in advance. The guide core 30 is disposed within the first working channel 18 of the borescope body 10. The guide core 30 and the endoscope body 10 are all inserted into the ureter of the patient, a procedure that is blind to the operator. The first core 31 is then withdrawn from the patient from outside the patient. The first core 31 is disengaged from the first working channel 18. The second core 32 is rotated from the rear end of the second core 32, the mesa of the second core 32 corresponding to the cross section of the first working channel 18. The second core 32 is withdrawn from the first working channel 18. At this point, the guide core 30 is completely withdrawn from the first working channel 18 by the operator. Only the endoscope body 10 is located in the ureter of the patient, close to the renal pelvis of the patient.

During a subsequent surgical procedure, the irrigated core 20 is inserted into the first working channel 18 by an operator. That is, the infusion core 20 replaces the guide core 30 and is mounted inside the borescope body 10. In other words, the infusion core 20 is inserted by the operator inside the patient's kidney along with the scope body 10. The inner core 20 and the anterior end of the main body 10 together extend along the patient's renal pelvis toward the interior of the renal pelvis.

The infusion core 20 includes a core body 21 and an operation portion 22, and the core body 21 is connected to the operation portion 22. The core main body 21 is located at the front end of the operation portion 22. The core body 21 is adapted to provide an installation space, and the operating portion 22 is adapted to provide a holding space. In the operating state of the detachable ureteroscope 1, the inner core body 21 is located inside the patient and the operating portion 22 is located outside the patient. The diameter of the inner core body 21 is smaller than the diameter of the first working channel 18, so that in the working state of the split ureteroscope 1, the inner core body 21 can extend from the rear end of the first working channel 18 to the front end of the first working channel 18.

The operation unit 22 is connected to the rear end of the core main body 21 and is located outside the patient. It should be noted that the operation portion 22 is limited by the rear end of the grip 12. That is, the operation portion 22 is limited to the rear end of the grip 12. In other words, the operating portion 22 is adapted to be engaged with the rear end of the grip 12. The length of the first working channel 18 is set equal to the length of the core body 21 so that the scope body 10 and the perfusion core 20 together can extend inside the renal pelvis of the patient in the working state of the split ureteroscope 1. In detail, the core body 21 and the main mirror 11 remain relatively fixed with respect to the anterior face, extending together inside the patient's renal pelvis. In other words, the borescope body 10 and the perfusion core 20 are introduced into the interior of the patient's renal pelvis by means of a post-fixation.

It is further noted that the tube mirror body 10 has a second working channel 19. The second working channel 19 is enclosed by the core body 21. That is, the space between the main mirror 11 and the core body 21 is the second working channel 19. The second working channel 19 is adapted to provide an attracting space. In other words, the suction work is completed through the second working channel 19. The second working channel 19 is part of the first working channel 19. Inserting the guiding core 30 through the first working channel 19 while the detachable ureteroscope 1 is outside the patient's body; when the detachable ureteroscope 1 is in the inserted state, the guiding core 30 is completely separated from the main body 10 of the tube lens, and no object exists in the first working channel 18. The second working channel 19 is provided with a protruding outlet in the extension of the grip element 12, i.e. the perfusion fluid inside the patient's renal pelvis can be discharged from the second working channel 19 in the working state of the detachable ureteroscope 1.

The borescope body 10 further comprises a sealing ring 17, wherein the sealing ring 17 is arranged inside the rear end of the grip 12. That is, the sealing ring 17 is disposed at the junction of the tube lens body 10 and the perfusion core 20 when the detachable ureteroscope 1 is in an operating state. Further, the sealing ring 17 is disposed in the second working channel 19 to prevent perfusion fluid from flowing backward from the front end when the detachable ureteroscope 1 is in the working state. I.e. the sealing ring 17 acts as a barrier, waterproof and flow-guiding means for guiding the flow of the perfusion fluid from the second working channel 19 from the front end to the rear end. The sealing ring 17 is in this embodiment embodied as a ring shape, allowing the core body 21 to pass through. The center of the ring is provided with a saw-tooth blocking piece, that is, when the inner core main body 21 does not pass, the sealing ring 17 is completely sealed; when the inner core main body 21 passes through the center of the sealing ring 17, the outer side of the inner core main body 21 is blocked from front and back by the annular end face of the sealing ring 17.

The infusion core 20 has a third working channel 28, the third working channel 28 being located inside the second working channel 19. That is, the third working channel 28 is surrounded by the second working channel 19. In other words, when the detachable ureteroscope 1 is switched to an operating state, the first working channel 18 is internally vented into the inner core body 21. The first working channel 18 is divided into two parts by the core body 21, the second working channel 19 and the third working channel 28. Stated another way, the cross-sectional area of the first working channel 18 is greater 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 external to the core body 21 and the third working channel 28 is internal to the core body 21.

The inner core 20 is positioned inside the endoscope body 10 and is used for pouring, sucking and introducing mechanical crushed stone. Thereby, the second working channel 19 acts as an attraction in the working state of the detachable ureteroscope 1. The third working channel 28 serves for perfusion and for introduction of lithotripsy instruments in the working state of the detachable ureteroscope 1.

In this embodiment, the third working channel 28 extends from the anterior end to the posterior end of the core body 21, and a lithotripsy instrument can be passed along the third working channel 28 to the interior of the patient's renal pelvis. The third working channel 28 has a two-stage bifurcation at its rear end, one for feeding perfusion fluid or the like into it and the other for feeding into the lithotripter. That is, the third working channel 28 functions to irrigate and provide the lithotriptic instrument extension channel.

The infusion core 20 has an infusion port 26 and an instrument port 27, the infusion port 26 and the instrument port 27 being located at the operation section 22, that is, the infusion port 26 and the instrument port 27 are provided at the rear end of the infusion core 20. Further, the instrument opening 27 is located at a rear end surface of the operation portion 22, the pouring opening 26 is located at a peripheral side of the operation portion 22, and the pouring opening 26 and the instrument opening 27 are independent from each other to distinguish two passages. The two channels separating the pouring opening 26 and the instrument opening 27 are designed to be opened into different devices to perform different functions. In particular, the perfusion opening 26 is adapted to be accessed by a perfusion apparatus, the perfusion opening 26 communicating the interior of the patient's renal pelvis with the exterior of the patient, the perfusion apparatus extending from the exterior of the patient to the interior of the patient's renal pelvis for performing a perfusion treatment of the interior of the patient's renal pelvis. The instrument well 27 is adapted to be accessed by a lithotripsy instrument that extends from the instrument well 27 into the third working channel 28 and eventually into the interior of the patient's renal pelvis to treat the kidney stones 5 located therein.

It should be noted that the third working channel 28 is connected to the interior of the renal pelvis of the patient at the front end and connected to the perfusion opening 26 and the instrument opening 27 at the rear end. That is, the third working channel 28 serves both the function of infusion and the function of lithotripsy.

The infusion core 20 further comprises a pair of control members 23, the control members 23 being located at the operating 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 front end bending of the core body 21.

The infusion core 20 includes a pair of bendable members 24, the bendable members 24 providing a bending action to the core body 21. Specifically, the bendable member 24 is provided inside the core main body 21. In other words, the bendable member 24 is sleeved on the front end of the core main body 21 to integrally connect the core main body 21 to the bendable member 24.

In this embodiment, the bendable member 24 provides bending of the core body 21, the bendable member 24 optionally being made of bendable elements such as coils and snake bones. That is, 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 second bendable unit 242 is connected to the first bendable unit 241 at a front end and to the core main body 21 at a rear end. In this embodiment, the first bendable unit 241 is illustratively a snake bone structure, and the second bendable unit 242 is illustratively a spring coil structure. The first bendable unit 241 and the second bendable unit 242 are connected in an associated manner to achieve 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 do not generate a phenomenon that the strength of the first bendable unit 241 and the second bendable unit 242 cannot be supported due to structural singleness when the inner core main body 21 is driven to bend, in other words, the second bendable unit 242 and the first bendable unit 241 provide a function of structural support to each other.

The infusion core 20 further comprises a pair of driving members 25, the driving members 25 being arranged inside the core body 21. The driving member 25 has one end connected to the bendable member 24 and the other end connected to the control member 23. That is, the bendable member 24 located in the patient is linked to the control member 23 through the driving member 25. In other words, the operator can achieve the bending of the bendable member 24 by controlling the control member 23 and transmitting the driving 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 at the operation part 22, and the first control unit 231 and the second control unit 232 are independent from each other, so that the control interactivity is enhanced by separating the control objects of the first control unit 231 and the second control unit 232 from each other, so that the operator can control the inner core 20 conveniently.

The driving member 25 further includes a first driving unit 251 and a second driving unit 252, wherein a front end of the first driving unit 251 is connected to a front end of the first bendable unit 241, and a rear end is connected to the first control unit 231. The second driving unit 252 has a front end connected between the first bendable unit 241 and the second bendable unit 242 and a rear end 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 should be noted that the inner core 20 further includes a sleeve 29, and in this embodiment, the sleeve 29 is sleeved on the outer portion of the first bendable unit 241. Since the first bendable unit 241 is formed of a snake bone structure, the first bendable unit 241 has a gap, and the sleeve 29 serves to prevent the second working channel 19 and the third working channel 28 from being penetrated with each other by the flushing fluid so that the second working channel 19 and the third working channel 28 are not interlaced during the suction of the infusion core 20. That is, the kit 29 ensures that the suction function of the inner core 20 is performed smoothly.

In another embodiment of the present invention, as shown in fig. 17C, the first bendable unit 241 at the front end may be optionally formed of a spring coil, and the second bendable unit 242 at the rear end may be optionally formed of a snake bone member. That is, at this time, the sleeve 29 is still sleeved outside the first bendable unit 241, and the second bendable unit 242 is disposed inside the core main body 21.

As shown in fig. 17D and 17E, the first bendable unit 241 and the second bendable unit 242 are each composed of a snake bone member and a spring coil, respectively, to satisfy the bending action of the inner core 20.

The operation of the detachable ureteroscope 1 is illustrated: the guide core 30 is installed from the front end of the borescope body 10 into the first working channel 18. The detachable ureteroscope 1 is passed from the urethra of the patient to the renal pelvis. The first core 31 and the second core 32 are sequentially withdrawn, and the guide core 30 is completely withdrawn from the patient's body.

Next, the infusion core 20 is introduced from the rear end of the first working channel 18 of the borescope body 10. The operation portion 22 of the infusion core 20 and the grip 12 of the borescope body 10 are engaged with each other to fix the core body 21 in the first working channel 18. That is, the front ends of the infusion core 20 and the tube mirror main body 10 are flush with each other. The lithotripsy instrument and the flushing fluid are introduced from the third working channel 28 of the perfusion core 20, and the main scope 11 and the core body 21 are extended to the interior of the renal pelvis of the patient by controlling the bending of the bendable member 24 by the control member 23, so as to perform lithotripsy and suction tasks on the renal calculus 5 in the patient.

Finally, the crushed kidney stones 5 and the rinsing fluid are discharged from the patient's body through the second working channel 19 between the main scope 11 and the core body 21. The endoscope body 10 and the infusion core 20 are withdrawn from the patient's body to complete the surgical procedure.

The foregoing has been a further detailed description of the invention in connection with certain preferred embodiments thereof, and it is to be understood by those skilled in the art that the foregoing description and examples of the invention as shown in the drawings are intended to be illustrative only and not limiting. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the invention, and it is intended that the claims filed herewith shall be regarded as defining 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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