CN114098619A

CN114098619A - Multi-channel ureteroscope and manufacturing method thereof

Info

Publication number: CN114098619A
Application number: CN202010904320.5A
Authority: CN
Inventors: 刘冠琳; 程跃; 胡嘉盛
Original assignee: Ningbo Xinwell Medical Technology Co Ltd
Current assignee: Ningbo Xinwell Medical Technology Co Ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2022-03-01

Abstract

The invention discloses a multichannel ureteroscope and a manufacturing method thereof, wherein the multichannel ureteroscope comprises an operating handle and a scope main body, the scope main body comprises a working end and an operating end, the operating end is connected with the operating handle, the scope main body integrally extends between the working end and the operating end, the scope main body is provided with a plurality of channels, one channel is a discharge channel, and the discharge channel is used for feeding an auxiliary guide component and discharging sundries.

Description

Multi-channel ureteroscope and manufacturing method thereof

Technical Field

The invention relates to the field of medical instruments, in particular to a multi-channel ureteroscope and a manufacturing method thereof.

Background

The ureteroscope is a medical device for minimally invasive diagnosis and treatment in urinary surgery, and a conventional ureteroscope comprises an optical fiber, a working cavity and various working accessories for different purposes. Ureteroscopy is a procedure in which a ureter with a diameter of 0.2 to 0.5cm is inserted through a slender ureteroscope and a urethra, a bladder and a ureter orifice, and after a monitoring device is connected, a lesion in the ureter or a renal pelvis can be clearly observed, so that ureteral diseases can be diagnosed or treated by different instruments inserted into a working cavity.

Ureteroscopes currently used mainly include hard ureteroscopes and soft ureteroscopes, wherein the hard ureteroscopes, i.e., ordinary ureteroscopes, are used for treating ureteral stones and other diseases, and are suitable for treating ureteral stones due to their relatively hard and inflexible main bodies, i.e., for treating relatively straight or linear portions, while the soft ureteroscopes can be used for treating ureteral stones, such as renal pelvis and renal calyx stones, which are not treated by the ordinary ureteroscopes.

Although the flexible ureteroscope can greatly supplement the defects of the common ureteroscope and can be used for treating more curved paths or position diseases which cannot be treated by the common ureteroscope, in practical application, a plurality of adverse factors still exist.

Reference is made to fig. 1A-1B, which are schematic illustrations of a conventional ureteral soft lens for treatment of renal pelvis stones. The conventional ureter soft lens comprises an operating handle, a soft lens main body 1P, a lens sheath 2P and an inner core 3P, wherein the end part of the soft lens main body can be bent, the operating handle controls the work of the soft lens main body, and the lens sheath is used for positioning the soft lens main body. The soft lens body is provided with a plurality of working channels for the working processes of passing through the guide wire 4P, the therapeutic apparatus 5P and flushing water. For example, when the soft ureteroscope is used for treating a superior ureteral stone of a patient, a guide wire is first passed through one of the working channels of the ureteroscope, the ureteroscope with the guide wire 4P is fed into the body, the guide wire 4P is made to enter the ureter, the sheath 2P and the inner core 3P are inserted along the guide wire, the ureteroscope sheath is inserted to a position 0.5-1cm away from the stone, the inner core 3P is withdrawn, and the soft scope body 1P is fed into the sheath 2P, the soft scope body 1P is close to the stone, flushing, stone breaking and the like are performed by a treatment instrument of the working channel, and crushed stone and waste water can be fed out through a slit between the soft scope body 1P and the sheath 2P.

It can be seen that in order to facilitate the bending of the soft lens body 1P to the respective corner portions, the whole body needs to be relatively soft, which results in lack of guidance for the advancement, and the entry must be assisted by the cooperation with the sheath 2P. The sheath 2P has the function of guiding the soft lens body 1P to enter on one hand, and on the other hand, the sheath and the soft lens body 1P form a gap 101P which is sandwiched inside and outside for delivering waste materials and waste water, and the gap is an essential channel in treatment work. There are some problems based on such a structure.

Firstly, the sheath is guided by a guide wire to enter the ureter, that is, the sheath enters the ureter before the soft lens body, and at this time, an operator, such as a doctor, cannot obtain image information in the body, so that the sheath is a blind operation when being put in, the accuracy of the sheath basically depends on the experience of the operator, and the requirement on the operation level of the operator is high.

Secondly, the waste is discharged from the slit between the sheath and the flexible lens body, since the flexible ureteroscope needs to be operated in a relatively narrow space of the ureter of a human body, and thus has a small size, and the slit formed between the flexible lens body and the sheath is smaller in size due to the small size of the flexible ureteroscope, the discharge of the waste is very difficult, and the waste is generally sucked by means of negative pressure, but is still not circulated smoothly.

Thirdly, the space between the soft lens main body and the lens sheath is narrow. After the soft lens enters the lens sheath, the shape of the residual space in the lens sheath is irregular, so that the liquid and the sand-like calculus can be conveniently discharged, if the calculus becomes a block, the liquid and the sand-like calculus are difficult to discharge, and the soft lens main body is easy to clamp and break, so that the soft lens is damaged.

Fourth, medical devices, especially such medical devices for internal use, are generally required to be disposable, that is, the scope and amount of use are very large, and the cost of the soft lens including the lens sheath is relatively high, and the lens sheath occupies a large part of the cost, thereby greatly limiting the scope of use of the soft lens.

Fifth, and more importantly, the soft lens body has the advantage of being easily bendable, but it must be used with the lens sheath, which is relatively rigid, so that it can only stay in the ureter, and cannot be reached in the renal pelvis, calyx or the part needing bending, when waste material is removed after lithotripsy, the suction force generated by the port of the lens sheath is needed to suck out the lithotripsy and waste water at a remote position, such as the renal pelvis, and the remote suction is not easy to control the suction force, on one hand, the suction force is too large, the suction force has an influence on human organs, the suction force is too small, the waste material is discharged with poor efficiency, and the waste material is likely to be discharged unclean, and in most cases, waste material remains especially in some hidden corners; on the other hand, when the stone is crushed, water needs to be flushed, water needs to be quickly drained in the process of crushing the stone, and accumulated water in the renal pelvis is reduced.

Disclosure of Invention

An object of the present invention is to provide a multichannel ureteroscope and a manufacturing method thereof, wherein the multichannel ureteroscope does not need the auxiliary function of a sheath, so that the operation process of the sheath is avoided during the use process, and the blind operation of the sheath is avoided.

Another object of the present invention is to provide a multichannel ureteroscope and a manufacturing method thereof, wherein the multichannel ureteroscope is provided with a plurality of channels, so as to respectively undertake different functions, and facilitate an operator to select a corresponding channel according to actual operation conditions.

It is another object of the present invention to provide a multichannel ureteroscope and a method for manufacturing the same, wherein the multichannel ureteroscope includes an information acquisition device that is movably inserted through one of the channels.

Another object of the present invention is to provide a multichannel ureteroscope and a manufacturing method thereof, wherein the multichannel ureteroscope does not need the auxiliary function of a scope sheath, so that the working size is not reduced, the overall diameter size is reduced, and the damage of medical instruments to body organs is reduced.

It is another object of the present invention to provide a multichannel ureteroscope and a manufacturing method thereof, wherein the multichannel ureteroscope is provided with a discharge channel for sucking out waste materials, so that the waste material sucking-out process does not need to be realized by the cooperation of a scope sheath.

Another object of the present invention is to provide a multichannel ureteroscope and a manufacturing method thereof, wherein the multichannel ureteroscope can increase an effective utilization space for discharging debris, enable relatively large-sized debris to be discharged, reduce the requirement for the size of the debris, and eliminate the need for powdering the debris.

Another object of the present invention is to provide a multichannel ureteroscope and a manufacturing method thereof, which reduces repeated fragmentation process of crushed stone, thereby reducing energy loss during the crushing process and improving working efficiency.

Another object of the present invention is to provide a multichannel ureteroscope and a manufacturing method thereof, wherein the multichannel ureteroscope can discharge impurities while crushing and flushing water, so that flushing water and discharging impurities tend to be balanced, and increase of renal pressure is avoided.

Another object of the present invention is to provide a multichannel ureteroscope and a manufacturing method thereof, in which the discharge channel integrally penetrates the multichannel ureteroscope, thereby allowing smooth entry and exit of both a working instrument and a fluid.

Another object of the present invention is to provide a multi-channel ureteroscope and a manufacturing method thereof, in which the ureteroscope forms an independent discharge channel, does not need to discharge through a slit formed by a sheath interlayer, increases an effective size for suction work, and facilitates discharge of foreign materials.

Another object of the present invention is to provide a multichannel ureteroscope and a manufacturing method thereof, in which a suction port of the discharge channel coincides with an image capturing position, thereby enabling visualization and targeted suction.

Another object of the present invention is to provide a multichannel ureteroscope and a manufacturing method thereof, in which a suction port of the discharge channel coincides with a working channel opening position, thereby enabling coincidence of a crushed stone position and a suction position, i.e., close-range suction.

Another object of the present invention is to provide a multichannel ureteroscope and a manufacturing method thereof, wherein a lens body of the multichannel ureteroscope includes a main frame and a coating layer, and the coating layer coats the main frame, so that the flexible coating layer and the relatively hard main frame are fused with each other, and the multichannel ureteroscope is interposed between a soft lens and a semi-hard lens.

It is another object of the present invention to provide a multichannel ureteroscope and a method for manufacturing the same, wherein the main body has a water inlet channel, a working channel, and a discharge channel, and the water inlet channel, the working channel, and the discharge channel are arranged in parallel.

It is another object of the present invention to provide a multichannel ureteroscope and a manufacturing method thereof, in which the multichannel ureteroscope has a uniform overall structure, and facilitates independent access to a body part.

Another object of the present invention is to provide a multichannel ureteroscope and a manufacturing method thereof, wherein the multichannel ureteroscope does not need a sheath, and auxiliary components are reduced, so that the cost of surgical consumables is reduced.

It is another object of the present invention to provide a multichannel ureteroscope and a manufacturing method thereof, wherein in one embodiment, the water inlet channel, the working channel and the discharge channel are formed of different continuous tubes, and the main frame and the coating layer constrain the positions of a plurality of tubes.

Another object of the present invention is to provide a multi-channel ureteroscope and a manufacturing method thereof, wherein the multi-channel ureteroscope includes a bendable head connected to a scope body, and the bending degree of the bendable head and the bending degree of the scope body are matched with each other, so as to better meet the bending requirements of large and small parts in a body.

To achieve at least one of the above objects, one aspect of the present invention provides a multichannel ureteroscope comprising:

an operating handle; and

a mirror main part, wherein the mirror main part includes a work end and an operation end, the operation end is connected the operating handle, the mirror main part extends integratively between work end and the operation end, the mirror main part has a plurality of passageways, and one of them passageway is the discharge passage, the discharge passage is used for sending into supplementary guide part and discharge debris.

The multichannel ureteroscope according to one embodiment, wherein the scope body has at least two channels, one of which is a working channel and the other of which is the drainage channel.

The multichannel ureteroscope according to an embodiment, wherein the scope main body is provided with at least three channels, namely a water inlet channel, a working channel and a discharge channel, the water inlet channel is used for introducing water flow, and the working channel is used for passing through a working instrument and/or an information acquisition device.

The multichannel ureteroscope according to an embodiment, wherein the scope main body is provided with at least four channels, namely a water inlet channel, a working channel, a discharge channel and an information channel, the water inlet channel is used for introducing water flow, the working channel is used for passing through a working instrument, and the information channel is used for passing through an information acquisition device.

The multichannel ureteroscope according to one embodiment, wherein the water inlet channel and the working channel are located on two sides of the information channel.

The multichannel ureteroscope according to one embodiment, wherein the water inlet channel, the exhaust channel and the information channel are arranged in the same straight line.

The multichannel ureteroscope according to one embodiment, wherein the working channel has a first outlet, the water inlet channel has a second outlet, the first outlet, the second outlet, and the information acquisition device form a first working area of the working end, the discharge channel has a third outlet, the third outlet forms a second working area of the working end, and the first working area and the second working area are oppositely disposed.

The multichannel ureteroscope according to one embodiment, wherein the first working area and the second working area form a rounded step structure.

The multichannel ureteroscope according to one embodiment, wherein the scope body includes a main skeleton and an embedding layer, the embedding layer coats the main skeleton, the main skeleton includes at least one extending ridge and a series of reinforcing ribs, the longitudinally extending ridge extends along the scope body, and the series of reinforcing ribs are connected to the longitudinally extending ridge in a juxtaposed and annular manner.

The multichannel ureteroscope according to one embodiment, wherein the cross-sectional shape of the drainage channel is selected from the group consisting of: one of a circle, an ellipse, a polygon and a crescent.

Drawings

Fig. 1A-1B are schematic views of the working process of a ureter soft lens in the prior art.

Figure 2A is a schematic diagram of the working system of the multichannel ureteroscope according to a preferred embodiment of the present invention.

Figure 2B is a schematic perspective view of a multichannel ureteroscope according to a preferred embodiment of the present invention.

Figure 3A is an angled schematic view of the scope body of the multichannel ureteroscope according to the above-described embodiments of the present invention.

Figure 3B is an angled schematic view of the scope body of the multichannel ureteroscope according to the above-described embodiments of the present invention.

Fig. 4 is a schematic view of a process for forming the scope body of the multichannel ureteroscope according to the above-described embodiment of the present invention.

Figure 5A is a schematic working end elevation view of the scope body of the multichannel ureteroscope according to embodiments of the present invention described above.

Fig. 5B is a schematic transverse sectional view taken along line a-a in fig. 2A.

Figures 6A-6B are schematic longitudinal cross-sectional views of the multichannel ureteroscope along lines B-B and C-C of figure 5B.

Figures 7A-7B are schematic diagrams of two guided access procedures of a multichannel ureteroscope according to the above-described embodiments of the present invention.

Figures 8-9 are schematic views of the working of the multichannel ureteroscope into the renal pelvis, according to the above-described embodiments of the present invention.

Figure 10A is a schematic view of the working system of a multichannel ureteroscope according to a second preferred embodiment of the present invention.

Figures 10B-10C are schematic perspective views at different angles of a multichannel ureteroscope according to a second preferred embodiment of the present invention.

Multichannel ureteroscope figure 11A is an angular schematic view of the scope body of a multichannel ureteroscope according to a second preferred embodiment of the present invention.

Figure 11B is an angled schematic view of the scope body of a multichannel ureteroscope according to a second preferred embodiment of the present invention.

Fig. 12 is a schematic view of the mirror body formation process of a multichannel ureteroscope according to a second preferred embodiment of the present invention.

Figure 13A is a schematic working end elevation view of the scope body of a multichannel ureteroscope according to a second preferred embodiment of the present invention.

Fig. 13B is a schematic transverse sectional view taken along line D-D in fig. 10A.

Fig. 14A-14B are schematic longitudinal cross-sectional views taken along lines E-E and F-F in fig. 13B.

Figure 15 is a schematic view of the scope body of a multichannel ureteroscope according to a third preferred embodiment of the present invention.

Figures 16A-16C are schematic views of the curves of a multichannel ureteroscope according to the above-described embodiments of the present invention accessing different locations in the body.

Figure 17 is a schematic diagram comparing the drainage channels formed by a multichannel ureteroscope according to embodiments of the present invention with a prior art soft scope and sheath to form a suction space.

Figures 18A-18C are schematic illustrations of different shapes and layouts of the drainage channels formed by a multichannel ureteroscope, according to embodiments of the invention.

Figure 19 is a schematic cross-sectional view of a multichannel ureteroscope according to a fourth embodiment of the present invention.

Figure 20 is a schematic cross-sectional view of a multichannel ureteroscope according to a fifth embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as 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 understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.

It is to be understood that the terms "a" and "an" are to be interpreted as meaning "at least one" or "one or more," i.e., that a single element may be present in a single embodiment, while in other embodiments the element may be present in a plurality, and the terms "a" and "an" are not to be interpreted as limiting the number.

References to "one embodiment," "an embodiment," "example embodiment," "various embodiments," "some embodiments," etc., indicate that the embodiment described herein may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the feature, structure, or characteristic. In addition, some embodiments may have some, all, or none of the features described for other embodiments.

Figure 2A is a schematic diagram of the working system of the multichannel ureteroscope according to a preferred embodiment of the present invention. Figure 2B is a schematic perspective view of a multichannel ureteroscope according to a preferred embodiment of the present invention. Figure 3A is an angled schematic view of the scope body of the multichannel ureteroscope according to the above-described embodiments of the present invention. Figure 3B is an angular schematic view of the scope body of the multichannel ureteroscope according to the above-described embodiments of the present invention. Fig. 4 is a schematic view of the mirror body formation process of the multichannel ureteroscope according to the above-described embodiment of the present invention. Figure 5A is a schematic working end elevation view of the scope body of the multichannel ureteroscope according to embodiments of the present invention described above.

Fig. 5B is a schematic transverse sectional view taken along line a-a in fig. 2A. Fig. 6A-6B are schematic longitudinal cross-sectional views taken along line B-B and line C-C of fig. 5B. Figures 7A-7B are schematic illustrations of two guided access procedures of a multi-channel ureteroscope, according to the above-described embodiments of the present invention. Fig. 8-9 are schematic illustrations of the working of the multi-channel ureteroscope into the renal pelvis, according to the above-described embodiments of the present invention.

Multichannel ureteroscope referring to fig. 2A-9, the invention provides a multichannel ureteroscope 100, and the multichannel ureteroscope 100 is used for treating ureteral diseases, such as but not limited to ureteral calculus, tumor, and the like. It should be understood by those skilled in the art that the multichannel ureteroscope 100 can also be used for other aspects of disease treatment, and the use of the multichannel ureteroscope 100 is not a limitation of the invention.

The multichannel ureteroscope 100 comprises a scope body 10 and an operating handle 20, and the operating handle 20 is used for controlling the operation of the scope body 10. Further, the operating knob 20 controls turning of the end of the mirror body 10. In use, the operator brings the end of the mirror body 10 close to the treatment site by operating the operating handle 20.

The mirror body 10 comprises a working end 11 and an operating end 12, the operating end 12 is connected to the operating handle 20, and the working end 11 is far away from the operating handle 20. That is, when used, the working end 11 is the end that enters the body for treatment, and the operation end 12 is the end that is located outside the body for operation by the operator. The mirror body 10 extends linearly between the working end 11 and the operating end 12. Preferably, the main body 10 is integrally extended between the working end 11 and the operation end 12 by the same material or structure, so that the acting force when the main body 10 enters the body is consistent, and the main body is convenient to enter and exit.

It is worth mentioning that in the embodiment of the present invention, the middle portion of the mirror body 10 integrally extends between the working end 11 and the operation end 12, that is, there is no seam or joint at the outer surface of the mirror body 10, so that the mirror body 10 is stably entered into the body. In addition, due to the uniformity of the surface, the mirror body 10 can be smoothly withdrawn from the body, or, in the withdrawal operation, is not obstructed by other structures on the surface of the mirror body 10. Preferably, the cross-section of the mirror body 10 is substantially circular, so that the resistance of the peripheral side is small.

Further, the operating handle 20 comprises at least one operating element 21, which operating element 21 is controllably connected to the working end 11 of the mirror body 10. For example, when the working end 11 of the mirror body 10 reaches a predetermined position, the user can operate the operating element 21 so that the end of the mirror body 10 is bent. In other words, the operating element 21 controls the bending work of the outer end portion of the mirror body 10.

In one embodiment of the present invention, the multichannel ureteroscope 100 comprises a control wire, which is preset inside the scope body 10 and extends along the scope body 10, and when the operation element 21 of the operation handle 20 is rotated, the control wire pulls the working end 11 of the scope body 10, so that the end of the scope body 10 is controlled to rotate in a predetermined direction by the operation handle 20.

The mirror body 10 has a plurality of passages, each of which passes through the mirror body 10 and extends from an operation end 12 to a working end 11 of the mirror body 10. The plurality of channels are convenient for respectively bearing different functions, and an operator can conveniently select the corresponding channel according to the actual operation condition. By way of example and not limitation, the plurality is used for flushing, draining, lighting, breaking stone, or directing entry, respectively.

The multichannel ureteroscope 100 includes an information collection device 30, and the information collection device 3 is capable of being movably operated through one of the channels. When the information acquisition device 30 passes through one of the channels to reach the working end 11, the acquisition surface of the information acquisition device 30 is consistent with the outer side surface of the working end 11. In use, when the mirror body 10 travels forward in the body, the pickup device picks up forward image information, and the operator can observe the picked-up image information, thereby controlling the travel of the mirror body 10 as a target according to the picked-up image information.

Further, the plurality of channels includes an information channel 140 for the information collecting device 30 to work. That is, in operation, the information-collecting device 30 can be passed through the information channel 140 into the body. The information channel 140 integrally extends between the working end 11 and the connecting end of the mirror body 10, and the information channel 140 communicates with the operating handle 20.

In one embodiment of the invention, the information collecting device 30 can be communicatively connected to a display device 400, so that the image collected by the information collecting device 30 is displayed through the display device 400. When the device is used, an operator can directly observe the image information in the body through the display device, so that the operation process of the operation is assisted. The information collecting device 30 is connected to the operating handle 20 by way of example but not limitation, through an optical fiber communication, the operating handle 20 is provided with an information interface 25, and the display device 400 can be connected to the information interface 25 so as to be connected to the information collecting device 30 in a communication manner, i.e., the information collected by the information collecting device 30 can be displayed through the display device 400. By way of example, but not limitation, the information collection device 30 is a camera. In other embodiments, the information collection device 30 may also be other sensor devices. In another embodiment of the present invention, the information collecting device 30 is a light source or a camera integrated with a light source.

In one embodiment of the invention, in operation, the information acquisition device 30 is located at the working end 11 of the mirror body 10, the end face of the information acquisition device 30 and the end face of the mirror body 10 being congruent, i.e. the surface of the information acquisition device 30 does not protrude beyond the outer surface of the working end 11 of the mirror body 10. In another embodiment of the present invention, the information collecting device 30 can extend forward to protrude from the working end 11.

Referring to fig. 3A-3B, the plurality of channels include a working channel 110 and a water inlet channel 120, that is, the mirror body 10 has the working channel 110 and the water inlet channel 120, and the working channel 110 is used for the entrance and exit of working instruments, such as but not limited to holmium laser. The water inlet passage 120 is used for introducing water flow. Preferably, the working channel 110 and the water inlet channel 120 are arranged in parallel and separated, that is, the working channel 110 and the water inlet channel 120 work independently. For example, when the multichannel ureteroscope 100 is used for treating a stone disease, a working instrument for lithotripsy penetrates from the working channel 110 to the working end 11 of the scope body 10, and water flows in from the outside through the water inlet channel 120 and is flushed out from the working end 11 of the scope body 10 to flush out the crushed stone.

Further, referring to fig. 6A-6B, the working channel 110 is formed by a working inner surface 1103, and the working inner surface 1103 is integrally formed of a uniform material, that is, the working inner surface 1103 is flat without uneven positions such as seams or protrusions, thereby facilitating smooth entrance and exit of the working device. Preferably, the working channel 110 is a circular tubular channel, and correspondingly, the working inner surface 1103 is an annular tube wall.

The inlet channel 120 is formed by a flush inner surface 1203, and the flush inner surface 1203 is integrally formed of a uniform material, that is, the flush inner surface 1203 is flat and has no uneven portions such as seams or protrusions, thereby facilitating the passage of water. Preferably, the inlet channel 120 is a circular tubular channel, and correspondingly, the flushing inner surface 1203 is an annular tube wall.

The working channel 110 has a first inlet 1101 and a first outlet 1102, the first inlet 1101 being connected to the operating handle 20, the first outlet 1102 being located at the working end 11 of the mirror body 10, i.e. in use, a working instrument is fed through the first inlet 1101 and out through the first outlet 1102 into the body. The first outlet 1102 is located adjacent to the outer end surface of the information collecting device 30, so that the working device can be visually operated.

The water inlet passage 120 has a second inlet 1201 and a second outlet 1202, the second inlet 1201 is connected to the operation handle 20, the second outlet 1202 is located at the working end 11 of the mirror body 10, that is, the second outlet 1202 is located adjacent to the outer end surface of the information collecting device 30, so as to facilitate visual flushing.

Preferably, the first outlet 1102 of the working channel 110 and the second outlet 1202 of the water inlet channel 120 are respectively located at two sides of the end surface of the information acquisition device 30, so that the information acquisition device 30 can simultaneously acquire the working information of the instrument entered by the working channel 110 and the flushing information of the water inlet channel 120, and the flushing process and the lithotripsy process can be matched with each other. It should be noted that the end face of the information collecting device 30 is located in the middle of the central connecting line of the first outlet 1102 and the second outlet 1202, so that the two sides are symmetrically collected, the collected angles are consistent, and the collected information is more accurate.

Further, referring to fig. 3A and 3B, the mirror body 10 has an exhaust channel 130, and the exhaust channel 130 is used for exhausting foreign materials in the body, such as, but not limited to, crushed stones, waste water, tumors, and the like. For example, when the multichannel ureteroscope 100 is used to treat a stone disease, crushed stones and waste water in the body are discharged together from the discharge channel 130. The drainage channel 130 is used to feed auxiliary guide members, such as guide wires 200, inner cores 300, etc., prior to lithotripsy.

It is worth mentioning that the size of the discharge passage 130 is larger than the size of the working passage 110 and the water inlet passage 120, so that the guide members such as the guide wire 200 and the inner core 300 can be smoothly moved in and out.

The discharge passage 130 integrally extends between the working end 11 and the connecting end of the mirror body 10, and the discharge passage 130 communicates with the operating knob 20.

The discharge passage 130 is arranged in parallel with and spaced apart from the working passage 110 and the inlet passage 120. That is, the discharge passage 130, the water inlet passage 120, and the working passage 110 are independent of each other, in other words, the operation process, the flushing process, and the draining process can be performed simultaneously or sequentially without affecting each other.

Referring to fig. 6A and 6B, the discharge passage 130 is formed by a discharge inner surface 1303, and the discharge inner surface 1303 is integrally formed of a uniform material, that is, the discharge inner surface 1303 is flat without uneven portions such as seams or protrusions, thereby facilitating discharge of the sundries. Preferably, the discharge passage 130 is a semicircular tubular passage. It should be noted that, in the conventional soft lens with a sheath, the drainage channel is formed by a gap between the sheath and the soft lens, that is, the interior of the drainage channel includes the soft lens, but in the technical solution of the present invention, the interior of the drainage channel 130 is a hollow structure, and there are no other components inside, so that the whole interior space is an effective drainage space, thereby greatly improving the efficiency of discharging the sundries and wastes.

The discharge passage 130 has a third inlet 1301 and a third outlet 1302, the third inlet 1301 is connected to the operating handle 20, the third outlet 1302 is located at the working end 11 of the mirror body 10, that is, the third outlet 1302 is located adjacent to the outer end surface of the information collecting device 30, so as to facilitate visual discharge of debris waste and achieve targeted suction discharge.

Further, referring to fig. 3A and 3B, the working channel 110, the water inlet channel 120 and the information collecting device 30 are located at one side to form a first working area 111, and the exhaust channel 130 is located at the other side to form a second working area 112, that is, at the working end 11 of the mirror body 10, the end surfaces of the first outlet 1102, the second outlet 1202 and the information collecting device 30 are arranged at one side region, and the third outlet 1302 is located at the other side region. It should be noted that the first outlet 1102 and the second outlet 1202 are both locations for entering the body for work, such as a position for breaking stones and flushing water, and the third outlet 1302 is a location for discharging, so that the entering function and the discharging function can be distinguished from each other by the arrangement of the first outlet 1102, the second outlet 1202 and the third outlet 1302 in two side regions, and mutual interference is reduced.

Preferably, the first outlet 1102 and the second outlet 1202 are located on a transverse connecting line of the information acquisition device 30, and the third outlet is located on a longitudinal connecting line of the information acquisition device 30. In other words, the first outlet 1102, the second outlet 1202, and the third outlet 1302 are respectively located on the peripheral side of the information collecting apparatus 30. By way of example and not limitation, on the left, right and above or below the information acquisition device 30, respectively, so that each work location can be monitored. Preferably, the center of the first outlet 1102, the center of the second outlet 1202 and the center of the optical axis of the information collecting device 30 are located on the same straight line, and the information collecting device 30 and the third outlet 1302 are in a T-shaped layout.

In this embodiment of the present invention, the plurality of channels includes at least four channels, which are the working channel 110, the water inlet channel 120, the discharge channel 130, and the information channel 140, respectively. A plurality of the channels are arranged according to preset positions so as to correspondingly bear different functions.

In an embodiment of the present invention, in the first working area 111, three of the channels, i.e., the working channel 110, the information channel 140 and the water inlet channel 120, are arranged substantially linearly, and preferably, the three channels have the same size, i.e., the diameter of the working channel 110, the diameter of the information channel 140 and the diameter of the water inlet channel 120 are substantially the same, so that a user can select one of the channels according to actual use conditions. That is, the working channel 110 is not limited to passing through the working device, and may be used for flushing or passing through the information collecting device 30, the water inlet channel 120 is not limited to flushing or inwardly passing through water flow, and may be used for passing through multiple working devices or through the information collecting device 30, and the information channel 140 is not limited to passing through the information collecting device 30, and may be used for passing through water flow or through the working device.

It should be noted that the internal environment of the human body is complex, and due to factors such as human respiration and blood flow, the internal environment of the human body is in dynamic change, and the internal environment of different people is different, according to the embodiment of the present invention, the scope body 10 has a plurality of channels that can be flexibly selected, and an operator can select a corresponding channel to work according to the situation in the actual operation process, for example, when the information collected by the information channel 140 located in the middle is not clear or is blocked, the water inlet channel 120 or the working channel 110 located at the edge position can be selected to be introduced into the information collecting device, so as to observe the internal environment state more clearly. Correspondingly, when the flushing or the stone breaking operation is carried out, the flushing channel or the stone breaking channel can be adjusted according to the actual operation condition.

In one embodiment, the discharge passage 130 can communicate with a suction device, so as to rapidly discharge the impurities in the body by means of negative pressure suction. It is worth mentioning that the third outlet 1302 and the second outlet 1202 are both located at the working end 11, that is, the position generating the suction force is close to the position of the crushed stone, so as to achieve the close suction, that is, the suction and the stone discharge are more targeted, and the size of the suction force is easy to control.

Referring to fig. 2A and 2B, the operating handle 20 has a plurality of interfaces for passing or connecting operating components, such as a guide wire 200, an inner core 300, a lithotripter, a flushing device, a suction device, and the like, respectively. For example, the operating handle 20 includes a first port 22, a second port 23 and a third port 24, the first port 22 is communicated with the working channel 110, the second port 23 is communicated with the water inlet channel 120, and the third port 24 is communicated with the water outlet channel 130. For example, the first port 22 is used for passing through the working instrument 700, the second port 23 is used for connecting with a flushing device, and the third port 24 is used for passing through the guide wire 200, the inner core 300 and connecting with the suction device 600. The operating handle 20 further includes an adjustment hole 26, and the adjustment hole 26 is used to adjust the operation of the discharge passage 130. For example, when the adjusting hole 26 is pressed, the discharging passage 130 is in an operating state, i.e., a state of sucking the crushed stone and sundries, and when the adjusting hole 26 is released, or in a natural state, the discharging passage 130 is in an inactive state, i.e., the sucking and discharging of the sundries are stopped.

In an embodiment of the present invention, the cross section of the discharge channel 130 is substantially elliptical, and the third outlet 1302 is substantially elliptical, so as to maximize the spatial position of the mirror body 10, maximize the internal space of the discharge channel 130, increase the effective space for discharging waste materials, and thus discharge the impurities in the body more quickly, avoid the formation of water in the body, and reduce the residue. In other embodiments of the present invention, the cross-section of the discharge passage 130 may also be other shapes, such as a semi-circle, a sector. In other embodiments, the water inlet passage 120, the working passage 110, and the region outside the information acquisition device 30 can be used as the region where the exhaust passage 130 is disposed, in the case of satisfying the structural strength requirement of the mirror body 10.

It is worth mentioning that, in the conventional soft endoscope with sheath, the drainage channel is substantially annular, and the available space is only one annular gap, so that the drainage efficiency is very low, and the crushed stone is easy to block, but in the technical scheme of the invention, the effective space of the drainage channel 130 is maximized by using the independent and hollow structural design of the drainage channel 130, so that the blockage of the crushed stone is reduced, and the sundries can be smoothly and quickly discharged.

Further, in this embodiment of the present invention, the formation regions of the water inlet passage 120, the information collecting device 30, and the working passage 110 are extended convexly outward. That is, the first working area 111 extends convexly outward. The first working area 111 and the second working area 112 form a substantially rounded step structure. It is worth mentioning that the substantially stepped configuration formed by the first working area 111 and the second working area 112 reduces the effective contact area of the ends, thereby facilitating the entry or movement of the mirror body 10 into the body. Preferably, corner positions of the first working area 111 and the second working area 112 are provided with a round corner structure, further facilitating the entry of the end of the mirror body 10.

It is also worth mentioning that, as described above, the first working area 111 and the second working area 112 are working areas for two functions, and thus are arranged in a partitioned manner such that the two functions can be independent from each other, and the substantially step structure of the first working area 111 and the second working area 112 is arranged in a manner such that the functions of the first working area 111 and the second working area 112 are further distinguished. For example, when the rock breaking operation is performed, the position corresponding to the first working area 111 is used for performing rock breaking and flushing, and the crushed rock and the waste water fall downward, at this time, the second working area 112 located at the rear side of the lower side of the first working area 111 sucks the impurities quickly, and since the flushed water of the first outlet 1102, i.e., the incoming water, has a predetermined distance from the discharge position, i.e., the third outlet 1302, the incoming water is prevented from being discharged when not being used, and thus the rock breaking flushing process of the first working area 111 and the suction and discharge process of the working area are better separated.

It is also worth mentioning that the space size of the drainage channel 130 is larger than that of the water inlet channel 120, and the drainage channel is adapted to the water inlet function and the water outlet function respectively under the condition of maximizing the space utilization rate. For example, the water inlet 120 is used for flushing water, i.e. after breaking stones, the broken stones are flushed and a flowing medium is provided to send them out. During the operation, on one hand, a lithotripsy apparatus such as holmium laser needs to be kept, the working end face is clearly visible, so that an operator can clearly control the lithotripsy apparatus, so that the water flow cannot be too large to avoid affecting the sight, on the other hand, the water flow is too large to easily form accumulated water in the kidney, so that the pressure of the kidney is increased, and on the third hand, the entering water is clear water and is directly flushed into the body, so that the water pressure cannot be too large, therefore, the requirement of the water flow of the entering water on the condition of meeting the flushing requirement is relatively small, the drainage channel 130 needs to discharge the lithotripsy sundries as fast as possible, and the discharged water is not clear water but a mixture of impurities and water, so that on the one hand, the lithotripsy sundries with large size can pass through, therefore, in the embodiment of the invention, through the zoning and the setting of the size, the water inlet channel 120 and the water discharge channel 130 are functionally isolated from each other, the working areas are separated from each other, and the working size and the functional requirements are matched with each other, so that the stone breaking and discharging efficiency is integrally improved. The multichannel ureteroscope 100 can discharge sundries while crushing stones and flushing water, and modulates the flow relation between flushed water and sucked sundries, so that the flushing water and the sundries tend to be balanced, and the increase of the kidney pressure is avoided.

On the other hand, the information acquisition device 30 is located in the first working area 111, and the information acquisition device 30 can enhance the hardness of the first working area 111, so that the working end 11 of the mirror body 10 can conveniently enter the body.

According to this embodiment of the present invention, referring to fig. 4-6B, the mirror body 10 includes a main frame 13 and a coating layer 14, the main frame 13 is coated in the coating layer 14, and the hardness of the main frame 13 is greater than that of the coating layer 14, so that the overall hardness of the mirror body 10 is enhanced while maintaining a certain flexibility of the mirror body 10, so that the mirror body 10 has a good guiding property and can be independently moved into and out of a human organ without requiring an auxiliary component such as a mirror sheath. By way of example and not limitation, the main frame 13 is made of metal, and the covering layer 14 is made of plastic. It is worth mentioning that the soft and hard materials are combined with each other in such a manner that the flexibility of the soft mirror and the guidance of the semi-hard mirror can be simultaneously provided, so that the mirror body 10 can be independently moved into and out of the human organ. Preferably, the coating layer 14 integrally coats the main frame 13.

In one embodiment of the invention, the hardness of the lens body 10 is between that of a semi-hard lens and a soft lens.

For example, in one embodiment of the present invention, when the mirror body 10 is manufactured, the main frame 13 may be manufactured in advance in a predetermined shape, and then the main frame 13 is placed in a mold, so that the material of the cladding layer 14 and the main frame 13 are fused with each other by way of integral molding, and a plurality of spatial channels, that is, the working channel 110, the water inlet channel 120, and the exhaust channel 130, are formed at predetermined positions.

The main frame 13 has a substantially circular cross section, that is, the main frame 13 is distributed on the periphery of the lens body 10 to form a circular wall, and the working channel 110, the water inlet channel 120 and the exhaust channel 130 are formed by the material of the coating layer 14. More specifically, the working inner surface 1103 of the working channel 110, the flushing inner surface 1203 of the water inlet channel 120, and the discharging inner surface 1303 of the discharging channel 130 are each formed of the material of the covering 14.

Referring to fig. 4, the main frame 13 includes at least one longitudinally extending ridge 131 and a plurality of transverse reinforcing ribs 132, the longitudinally extending ridge 131 extends along the length direction of the mirror body 10, and the transverse reinforcing ribs 132 are curvedly connected to both sides of the main frame 13. Preferably, the main frame 13 includes two longitudinally extending ridges 131 symmetrically distributed along the center of the mirror body 10, and a plurality of the transverse reinforcing ribs 132 are connected between the two longitudinally extending ridges 131 in an arc shape, in a vertically symmetrical manner, or in a mirror-symmetrical manner.

In one embodiment of the present invention, the transverse stiffener 132 has a bent structure, such as a wave-shaped structure. The backbone 13 includes a series of transverse reinforcing ribs 132 arranged substantially parallel to each other between two of the longitudinally extending ridges 131.

In one embodiment of the invention, the transverse stiffening ribs 132 are movably connected with the longitudinally extending ridges 131 to facilitate bending of the mirror body 10.

It is worth mentioning that the arrangement of the longitudinally extending ridges 131 and the transverse stiffening ribs 132 provides the mirror body 10 with a certain flexibility for easy bending, and on the other hand, provides the mirror body 10 with a better guidance for direct access to the body without the aid of a sheath.

Further, in one embodiment of the present invention, referring to fig. 3A-3B, the multichannel ureteroscope 100 includes an outer layer 15, and the outer layer 15 is attached to the outer surface of the scope body 10 for improving the surface properties of the scope body 10, for example, the outer layer 15 is used for enhancing the surface flatness of the scope body 10, so that the surface of the scope body 10 is smoother and thus easier to enter into the body.

Preferably, the outer layer 15 is a super-lubricious coating for reducing the outer surface drag of the mirror body. In one embodiment, the outer layer 15 is formed on the outer surface of the mirror body 10 by means of plasma enhanced chemical vapor deposition. It is worth mentioning that a nano coating is formed on the surface of the mirror main body 10 by means of plasma enhanced chemical vapor deposition, so that the smoothness of the surface of the mirror main body 10 can be greatly improved, and the thickness of the nano coating is very thin, so that the overall hardness of the mirror main body 10 is not affected.

Further, in one embodiment of the present invention, the mirror body 10 has an identifier 16, the identifier 16 being provided on an outer surface of the mirror body 10. The identifier 16 is exemplified but not limited to scale identification. It is worth mentioning that the identifier 16 cooperates with the information collecting device 30 to assist the operator in performing the surgical operation. For example, when the operator performs use, the image information in front of the working end 11 of the scope body 10 is observed by the information collecting device 30, and the depth of entry is observed by the identifier 16, thereby better determining the treatment position. Preferably, the identifier 16 is located on the outer layer 15 and is a different color than the outer layer 15.

Referring to fig. 7A-9, a process schematic is shown for use of the multichannel ureteroscope 100 according to embodiments of the present invention. Taking the example of the multi-channel ureteroscope 100 being used for the procedure of treating a stone in the renal pelvis, a guide wire 200 is first inserted from the third port 24 of the operating handle 20, i.e. the guide wire 200 is passed through the discharge channel 130 into the body, and the guide wire 200 is fed into the ureter, then an inner core 300 is inserted along the guide wire 200, i.e. the inner core 300 is fed along the discharge channel 130, and the ureter is fed along the guide wire 200, then the scope body 10 is inserted along the inner core 300, i.e. the scope body 10 is fed into the body under the guidance of the inner core 300, and during the procedure of the scope body 10, the in-vivo image collected by the image collecting device can be displayed by a display device; after the mirror main body 10 reaches a predetermined position, the guide wire 200 and the inner core 300 are taken out, an operator controls the position of the working end 11 of the mirror main body 10 close to the position of the stone by controlling the operating handle 20 according to an image displayed on the image acquisition device, a working instrument for crushing the stone, such as holmium laser, is placed in the working channel 110, the stone is crushed by the holmium laser, water is injected into the water inlet channel 120 by a water flushing device, water flows out through the second outlet 1202 of the water inlet channel 120, the position of the crushed stone is flushed by the water, the crushed stone and waste water are discharged from the discharge channel 130, and for example, the crushed stone can be sucked out from the discharge channel 130 by means of a suction device. After the operation is finished, the scope body 10 can be directly extracted from the body by controlling the operation knob 20.

Referring to fig. 7B, during this use of the invention, the multichannel ureteroscope 100 is advanced into the ureter from two of the guide wires 200, rather than being guided through the inner core 300. Of course, in other embodiments of the invention, the multichannel ureteroscope 100 may be guided into the body by other guide components as well.

It should be noted that, when the sundries are discharged, the third outlet 1302 of the discharge passage 130 is adjacent to the first outlet 1102 of the working passage 110, so that the sundries can be sucked in a short distance, and the crushed sundries can be sucked out quickly and efficiently. And because the third outlet 1302 is adjacent to the information collecting device 30, an operator can observe images, control the operating handle 20 and suck sundries in a targeted manner. On the other hand, since the scope body 10 is integrally extended and has a smooth outer surface, resistance is small when entering and exiting a human organ, and the scope body can independently enter and exit without the assistance of other parts.

It is also worth mentioning that during the use of the multichannel ureteroscope 100 of the present invention, no auxiliary components, such as the auxiliary function of the scope sheath, are required, so that the operation process of the scope sheath is reduced during the operation, the operation process is simplified, and the requirement on the operator is reduced. The multichannel ureteroscope 100 does not need the auxiliary action of a sheath, so that the overall diameter size is reduced under the condition that the working size is not reduced, the damage of instruments to body organs is reduced, the consumption of consumables is reduced, and the operation cost is reduced. On the other hand, when attracting, the condition of operation ability direct observation rubble position, and direct operation handle 20 just can adjust the position of attraction to make the rubble attract more have the targetedly, reduce the residue of rubble, and the wastes material can be by timely discharge, reduce the possibility of ponding.

It is also worth mentioning that the third outlet 1302, i.e. the sundry outlet, of the multichannel ureteroscope 100 is close to the second outlet 1202, i.e. the position of the gravels, so that the sundries can be sucked closely, and therefore, during the negative pressure suction, the size of the suction force can be better controlled, so that a better suction effect can be achieved with a smaller suction force, and the damage of the negative pressure suction to the body can be reduced.

It is also worth mentioning that in the using process of the existing ureteroscope, the crushed stone needs to be discharged under the auxiliary action of the ureteroscope sheath, the stone discharging efficiency is low, and the discharging space is narrow, so that in order to discharge the crushed stone as much as possible, the crushed stone needs to be pulverized, that is, the size of the crushed stone is as small as possible, for example, the size of the gap is smaller, while the size of the crushed stone of the existing stone crushing equipment cannot reach the size as small as this, the crushed stone needs to be repeatedly crushed, that is, the crushed stone needs to be crushed again, in this case, the stones with various sizes are mixed with each other, so that the stone crushing efficiency is further reduced, the repeated work is possibly needed to discharge more crushed stones, and therefore, the energy loss in the whole process is relatively large, the work efficiency is relatively low, and the operation time is relatively long, in the embodiment of the invention, the effective space for discharging the calculus of the multichannel ureteroscope 100 is greatly increased, so that the pulverized calculus is not needed, the calculus with larger size can be discharged, the energy loss is reduced, and the operation time is shortened.

Figure 10A is a schematic view of the working system of a multichannel ureteroscope according to a second preferred embodiment of the present invention. Figures 10B-10C are schematic perspective views at different angles of a multichannel ureteroscope according to a second preferred embodiment of the present invention. Figure 11A is an angled schematic view of the scope body of a multichannel ureteroscope according to a second preferred embodiment of the present invention. FIG. 11B is an angled schematic view of the scope body of a multichannel ureteroscope according to a second preferred embodiment of the present invention. Fig. 12 is a schematic view of a process for forming a lens body of a multi-channel ureteroscope according to a second preferred embodiment of the present invention. Figure 13A is a schematic working end elevation view of the scope body of the multichannel ureteroscope according to embodiments of the present invention described above. Fig. 13B is a schematic transverse sectional view taken along line D-D in fig. 10A. Fig. 14A-14B are longitudinal sectional views along lines E-E and F-F in fig. 13B.

Multichannel ureteroscope a multichannel ureteroscope 100A according to a second embodiment of the present invention is illustrated with reference to fig. 10A-14B, and the present invention provides a multichannel ureteroscope 100A for use in treating ureteral diseases, such as, but not limited to, ureteral stones, tumors, and the like. It should be understood by those skilled in the art that the multichannel ureteroscope 100A can also be used for other aspects of disease treatment, and the use of the multichannel ureteroscope 100A is not a limitation of the invention.

The multichannel ureteroscope 100A comprises a scope body 10A and an operating handle 20A, and the operating handle 20A is used for controlling the operation of the scope body 10A. Further, the operating knob 20A controls turning of the end portion of the mirror main body 10A. In other words, in use, the operator brings the end of the mirror body 10A close to the treatment site by operating the operating handle 20A.

The mirror body 10A includes a working end 11A and an operating end 12A, the operating end 12A is connected to the operating handle 20A, and the working end 11A is away from the operating handle 20A. That is, when used, the working end 11A is the end that enters the body for treatment, while the working end 12A is the end that is located outside the body for manipulation by the operator. The mirror body 10A extends linearly between the working end 11A and the operating end 12A. Preferably, the mirror body 10A is integrally formed by the same material or structure between the working end 11A and the operation end 12A, so that the acting force when the mirror body 10A enters the body is consistent, and the mirror body is convenient to enter and exit.

It should be noted that in the present invention, the middle portion of the mirror body 10A integrally extends between the working end 11A and the operation end 12A, that is, there is no seam or connecting interface on the outer surface of the mirror body 10A, so that the mirror body 10A is stably inserted into the body. In addition, due to the uniformity of the surface, the mirror body 10A can be smoothly withdrawn from the body, or, in the withdrawal operation, is not obstructed by other structures of the surface of the mirror body 10A. Preferably, the mirror body 10A is substantially circular in cross section so that the resistance of the peripheral side is small.

Further, the operating handle 20A comprises at least one operating element 21A, said operating element 21A being controllably connected to the working end 11A of the mirror body 10A. For example, when the working end 11A of the mirror body 10A reaches a predetermined position, the user can operate the operating element 21A so that the end of the mirror body 10A is bent. In other words, the operating element 21A controls the bending work of the outer end portion of the mirror body 10A.

In one embodiment of the present invention, the multichannel ureteroscope 100A includes a control wire 113A, the control wire 113A is preset inside the scope body 10A and extends along the scope body 10A, and when the operation element 21A of the operation handle 20A is rotated, the control wire 113A draws the working end 11A of the scope body 10A, so that the end of the scope body 10A is controlled to rotate in a predetermined direction by the operation handle 20A.

According to this embodiment of the invention, the working end 11A comprises a flexible head 114A, the flexible head 114A being controllably connected to the operating element 21A via the control wire 113A, and when the operating element 21A is operated in use, the control wire 113A pulls the flexible head 113A to control the flexible head 114A to bend in a predetermined direction or a predetermined degree of bending.

The multichannel ureteroscope 100 includes an information collection device 30, and the information collection device 30 is operable to be movable through one of the channels. When the information acquisition device 30 passes through one of the channels to reach the working end 11, the acquisition surface of the information acquisition device 30 is consistent with the outer side surface of the working end 11. In use, when the mirror body 10 travels forward in the body, the pickup device picks up forward image information, and the operator can observe the picked-up image information, thereby controlling the travel of the mirror body 10 as a target according to the picked-up image information.

In one embodiment of the invention, the information collecting apparatus 30A can be communicatively connected to a display device 400A so that an image collected by the information collecting apparatus 30A is displayed by the display device 400A. In use, the operator can directly observe the image information in the body through the display device 400A, thereby assisting the surgical operation process. The information collecting device 30A is, for example, but not limited to, communicatively connected to the operating handle 20A through an optical fiber, the operating handle 20A is provided with an information interface 25A, and a display device can be connected to the information interface 25A so as to be communicatively connected to the information collecting device 30A, that is, the information collected by the information collecting device 30A can be displayed through the display device 400A. By way of example, but not limitation, the information acquisition device 30A is a camera. In other embodiments, the information acquisition device 30A may also be other sensor devices.

In one embodiment of the present invention, in use, the information acquisition device 30A is located at the working end 11A of the mirror body 10A, and the end face of the information acquisition apparatus coincides with the end face of the mirror body 10A, that is, the surface of the information acquisition device 30A does not protrude beyond the outer surface of the working end 11A of the mirror body 10A.

In another embodiment of the present invention, the information collecting device can reach the working end 11A along the information channel or protrude forward.

The plurality of channels include a working channel 110A and a water inlet channel 120A, that is, the mirror body 10A has the working channel 110A and the water inlet channel 120A, and the working channel 110A is used for the ingress and egress of working instruments, such as but not limited to holmium laser. The water inlet passage 120A is used for introducing water flow. Preferably, the working channel 110A and the water inlet channel 120A are arranged in parallel and separately, that is, the working channel 110A and the water inlet channel 120A operate independently of each other. For example, when the multichannel ureteroscope 100A is used for treating a stone disease, a working instrument for lithotripsy penetrates from the working channel 110A to the working end 11A of the scope body 10A, and water flows in from the outside through the water inlet channel 120A and is flushed out from the working end 11A of the scope body 10A to flush out a crushed stone.

Further, the working channel 110A is formed by a working inner surface 1103A, and the working inner surface 1103A is integrally formed by a uniform material, that is, the working inner surface 1103A is flat without uneven positions such as seams or protrusions, thereby facilitating smooth entrance and exit of working devices. Preferably, the working channel 110A is a circular tubular channel, and correspondingly, the working inner surface 1103A is an annular tube wall.

The inlet channel 120A is formed by a flush inner surface 1203A, and the flush inner surface 1203A is integrally formed of a uniform material, i.e., the flush inner surface 1203A is flat and has no uneven portions such as seams or protrusions, thereby facilitating the passage of water. Preferably, the inlet channel 120A is a circular tubular channel, and correspondingly, the flushing inner surface 1203A is an annular tube wall.

The working channel 110A has a first inlet 1101A and a first outlet 1102A, the first inlet 1101A is connected to the operating handle 20A, the first outlet 1102A is located at the working end 11A of the scope body 10A, that is, in use, a working instrument is fed in through the first inlet 1101A and then out through the first outlet 1102A to the body. The first outlet 1102A is located adjacent to the outer end surface of the information collecting device 30A, thereby facilitating visual operation of the working device.

The water inlet passage 120A has a second inlet 1201A and a second outlet 1202A, the second inlet 1201A is connected to the operating handle 20A, and the second outlet 1202A is located at the working end 11A of the mirror body 10A, that is, the second outlet 1202A is located adjacent to the outer end surface of the information collecting device 30A, thereby facilitating visual flushing.

Preferably, the first outlet 1102A of the working channel 110A and the second outlet 1202A of the water inlet channel 120A are respectively located at two sides of the end surface of the information acquisition device 30A, so that the information acquisition device 30A can simultaneously acquire the working information of the instrument entered by the working channel 110A and the flushing information of the water inlet channel 120A, and the flushing process and the stone breaking process can be matched with each other. It should be noted that the end surface of the information collecting device 30A is located in the middle of the center connecting line between the first outlet 1102A and the second outlet 1202A, so that the two sides are symmetrically collected, the collected angles are consistent, and the collected information is more accurate.

Further, the plurality of channels includes an exhaust channel 130A, that is, the mirror body 10A includes the exhaust channel 130A, and the exhaust channel 130A is used to exhaust debris in the body, such as, but not limited to, crushed stones, waste water, tumors, and the like. For example, when the multichannel ureteroscope 100A is used to treat a calculus disease, crushed stones in the body are discharged together with waste water from the discharge channel 130A. The drainage channel 130A is used to feed auxiliary guide members, such as guide wire 200A, inner core 300A, etc., prior to lithotripsy.

It is worth mentioning that the size of the discharge passage 130A is larger than the size of the working passage 110A and the water inlet passage 120A, so that the guide members such as the guide wire 200A and the inner core 300A can be easily moved in and out.

The discharge passage 130A integrally extends between the working end 11A and the connection end of the mirror body 10A, and the discharge passage 130A communicates with the operating knob 20A.

The discharge passage 130A is disposed in parallel with and spaced apart from the working passage 110A and the water inlet passage 120A. That is, the discharge passage 130A, the water inlet passage 120A and the working passage 110A are independent from each other, in other words, the operation process, the flushing process and the draining process can be performed simultaneously or sequentially without affecting each other.

The discharge passage 130A is formed of a discharge inner surface 1303A, and the discharge inner surface 1303A is integrally formed of a material, that is, the discharge inner surface 1303A is flat without uneven portions such as seams or protrusions, thereby facilitating discharge of the foreign objects. Preferably, the discharge passage 130A is a semicircular tubular passage. It should be noted that, in the conventional soft lens with a sheath, the drainage channel is formed by a gap between the sheath and the soft lens, that is, the channel contains the soft lens, but in the technical solution of the present invention, the drainage channel 130A is a hollow structure, and has no other parts inside, so that the whole internal space is an effective drainage space, thereby greatly improving the efficiency of discharging the sundries and waste materials.

The discharge passage 130A has a third inlet 1301A and a third outlet 1302A, the third inlet 1301A communicates with the operating handle 20A, and the third outlet 1302A is located at the working end 11A of the mirror body 10A, that is, the third outlet 1302A is located adjacent to the outer end surface of the information collecting device 30A, so that the debris and waste can be visually discharged, and the suction and discharge can be performed with a target.

Further, the working channel 110A, the water inlet channel 120A and the information collecting device 30A are located at one side to form a first working area 111A, and the exhaust channel 130A is located at the other side to form a second working area 112A, that is, at the working end 11A of the mirror body 10A, the end surfaces of the first outlet 1102A, the second outlet 1202A and the information collecting device 30A are disposed at one side region, and the third outlet 1302A is located at the other side region. It is worth mentioning that the first outlet 1102A and the second outlet 1202A are both locations for entering the body for work, such as a position for breaking stones and flushing water, and the third outlet 1302A is a location for discharging, so that the entering function and the discharging function can be distinguished from each other by the arrangement of the two side areas of the first outlet 1102A, the second outlet 1202A and the third outlet 1302A, and mutual interference is reduced.

Preferably, the first outlet 1102A and the second outlet 1202A are located on a transverse line of the information acquisition device 30A, and the third outlet is located on a longitudinal line of the information acquisition device 30A. In other words, the first outlet 1102A, the second outlet 1202A, and the third outlet 1302A are respectively located on the peripheral side of the information collecting apparatus 30A. By way of example and not limitation, on the left, right and above or below the information acquisition device 30A, respectively, so that each work location can be monitored. Preferably, the center of the first outlet 1102A, the center of the second outlet 1202A and the center of the optical axis of the information acquisition device 30A are located on the same straight line, and the information acquisition device 30A and the third outlet 1302A are in an inverted T-shaped layout.

In one embodiment, the discharge passage 130A can be connected to a suction device, so as to rapidly discharge the impurities in the body by means of negative pressure suction. It is worth mentioning that the third outlet 1302A and the second outlet 1202A are both located at the working end 11A, i.e. the position where the suction force is generated is close to the position of the crushed stone, so as to achieve close-range suction, i.e. the suction and the stone discharge are more targeted, and the size of the suction force is easy to control.

Referring to fig. 10B and 10C, the operating handle 20A has a plurality of interfaces for passing or connecting operating components, such as a guide wire 200A, an inner core 300A, a lithotripsy device, a flushing device, a suction device, and the like, respectively. For example, the operating handle 20A includes a first port 22A, a second port 23A and a third port 24A, the first port 22A is communicated with the working channel 110A, the second port 23A is communicated with the water inlet channel 120A, and the third port 24A is communicated with the water outlet channel 130A. For example, the first port 22A is used for passing through the working device 700A, the second port 23A is used for connecting with the flushing device 500A, and the third port 24A is used for passing through the guide wire 200A, the inner core 300A and the suction device 600A. The operating handle 20 further includes an adjustment aperture 26A, the adjustment aperture 26A being used to adjust the operation of the discharge passage 130A. For example, when the adjustment hole 26A is pressed, the discharge passage 130A is in an operating state, i.e., a state of attracting debris; when the adjustment hole 26A is released, or in a natural state, the discharge passage 130A is in an inoperative state, i.e., stops suctioning and discharging the foreign objects.

In this embodiment of the present invention, the operating element 21A is located at an upper position of the operating handle 20A, and the first interface 22A and the second interface 23A are located at both sides of the operating handle 20A, respectively, and are preferably symmetrically distributed. The third interface 24A is located at a lower position of the operating handle 20A. The adjustment hole 26A is located at a lower position of the operating handle 20A. The information interface 25A is located at the rear end of the operating handle 20A.

It is worth mentioning that the operating handle 20A is adapted for a grip-down operation, i.e. the operator's fingers bypass the handle from below and perform the main control operation work, such as the operation of the working instrument 700, above the operating handle 20A.

In an embodiment of the present invention, the cross section of the discharge channel 130A is substantially circular, and the third outlet 1302A is substantially circular, so as to improve the space utilization rate of the mirror body 10A, improve the internal space of the discharge channel 130A, and increase the effective space for discharging waste materials, so as to discharge impurities in the body more quickly, avoid water accumulation in the body, and reduce residues. In other embodiments of the present invention, the cross-section of the discharge passage 130A may have other shapes, such as a semicircular shape, a sector area.

It is worth mentioning that, in the conventional soft endoscope with sheath, the drainage channel is substantially annular, and the available space is only one annular gap, so that the drainage efficiency is very low, and the crushed stone is easy to block.

Further, in this embodiment of the present invention, the formation regions of the water inlet passage 120A, the information collection device 30A, and the working passage 110A are extended convexly outward. That is, the first working area 111A is extended convexly outward. The first working area 111A and the second working area 112A form a substantially rounded step structure. It is worth mentioning that the substantially stepped configuration formed by the first working area 111A and the second working area 112A reduces the effective contact area of the ends, thereby facilitating the entry or movement of the mirror body 10A in vivo. Preferably, corner positions of the first working area 111A and the second working area 112A are provided with a round corner structure, so as to further facilitate the entrance of the end of the mirror body 10A.

Further, in a direction from the outer end to the inner end of the first working area 111A to the second working area 112A, the outer perimeter of the cross section gradually shrinks, for example, to form a duckbill-like structure, thereby facilitating the entry of the mirror body 11A.

It is also worth mentioning that, as described above, the first working area 111A and the second working area 112A are working areas of two functions, and thus are arranged in a partitioned manner such that the two functions can be independent from each other, and the substantially stepped structure of the first working area 111A and the second working area 112A is arranged in a manner such that the functions of the first working area 111A and the second working area 112A are further differentiated. For example, when the rock breaking operation is performed, the position corresponding to the first working area 111A is used for rock breaking and flushing, and the crushed rock and the waste water fall downward, at this time, the impurities are quickly sucked by the second working area 112A located near the first working area 111A, and since the flushed water of the first outlet 1102A, i.e., the incoming water, has a predetermined distance from the discharge position, i.e., the third outlet 1302A, the incoming water is prevented from being discharged when not being utilized, so that the rock breaking flushing process of the first working area 111A and the suction and discharge process of the working area are better separated.

On the other hand, the information acquisition device 30A is located in the first working area 111A, and the information acquisition device 30A can enhance the hardness of the first working area 111A, so that the working end 11A of the scope body 10A can conveniently enter the body.

According to this embodiment of the present invention, the mirror body 10A includes a main frame 13A and a cladding layer 14A, and the cladding layer 14A is clad on the outside of the main frame 13A. The hardness of the main frame 13A is greater than that of the clad layer 14A, so that the overall hardness of the mirror body 10A is enhanced while maintaining a certain flexibility of the mirror body 10A, so that the mirror body 10A has a good guidance and can be independently passed into and out of a human organ without requiring an auxiliary member such as a mirror sheath. By way of example and not limitation, the main framework 13A is made of metal, and the covering layer 14A is made of plastic. It is worth mentioning that, by combining the soft and hard materials with each other in such a manner, the flexibility of the soft mirror and the guidance of the semi-hard mirror can be provided at the same time, so that the mirror body 10A can be moved into and out of the human organ independently.

In one embodiment of the present invention, the hardness of the lens body 10A is between that of a semi-hard lens and a soft lens.

For example, in one embodiment of the present invention, when manufacturing the mirror body 10A, the main frame 13A may be manufactured in advance in a predetermined shape, and then the main frame 13A is placed in a mold, so that the material of the cladding layer 14A and the main frame 13A are combined with each other by integral molding.

According to this embodiment of the present invention, the main frame 13A has a substantially circular cross section, and the main frame 13A is a tubular body formed of a net structure, thereby making the main frame 13A flexible while having a certain degree of rigidity. Preferably, the main frame 13A is a tubular body formed by a metal net structure. The coating layer 14A is attached to the outer surface of the metal mesh pipe body.

Further, according to this embodiment of the present invention, the covering layer 14A is a tubular structure, and the main frame 13A and the covering layer 14A are connected in an inner-outer fit manner, or the main frame 13A and the covering layer 14A are sleeved in an inner-outer fit manner.

Referring to fig. 12 to 14B, the mirror body 10A includes a first tube 17A, a second tube 18A, and a third tube 19A, the first tube 17A forming the working channel 110A, the second tube 18A forming the water inlet channel 120A, and the third tube 19A forming the discharge channel 130A. The first tube 17A and the second tube 18A are respectively located on two sides of the information acquisition device 30A, and the third tube 19A is located below the information acquisition device. The inner side surface of the first pipe 17A forms the working inner surface 1103A, the inner side surface of the second pipe 18A forms the flushing inner surface, and the inner side surface of the third pipe 19A forms the discharge inner surface 1303A.

The coating layer 14A and the main frame 13A coat the outer side surfaces of the first pipe 17A, the second pipe 18A, and the third pipe 19A, so that the first pipe 17A, the second pipe 18A, and the third pipe 19A, and the information collecting device 30A are arranged at predetermined positions.

In one embodiment of the present invention, the control wire 113A is disposed inside the main frame 13A. In another embodiment, the control line 113A is disposed between the backbone 13A and the cladding 14A.

In one embodiment of the present invention, the bendable head 114A is formed of a flexible material to facilitate bending, and the bendable head 114A may be positioned without the backbone.

In one embodiment of the present invention, when the mirror main body 10A is manufactured, the first tube 17A, the second tube 18A, and the third tube 19A are formed in advance in predetermined diameter sizes, further, the first tube 17A, the second tube 18A, and the third tube 19A and the information collecting device 30A are arranged in predetermined positions, and then the main frame 13A of a mesh structure is formed and the main frame 13A is wrapped around the first tube 17A, the second tube 18A, and the third tube 19A and the information collecting device 30A.

The working inner surface 1103A, the flushing inner surface 1203A, and the discharge inner surface 1303A are formed of different continuous pipe bodies, respectively.

It is worth mentioning that in this embodiment of the invention, the cladding layer 14A and the main frame 13A internally and externally constrain the first, second and

third tubes

17A, 18A, 19A, but do not internally fix the first, second and

third tubes

17A, 18A, 19A by other media, that is, the first, second and

third tubes

17A, 18A, 19A can have a slight relative play in the space defined by the cladding layer 14A and the main frame 13A, which facilitates the bending of the mirror body 10A or has better flexibility. For example, when the mirror body 10A encounters a bending position, the cladding layer 14A and the main frame 13A of the mirror body 10A are bent integrally, the first tube 17A, the second tube 18A, and the third tube 19A are each bent, the cladding layer 14A and the main frame 13A limit the bending range of the first tube 17A, the second tube 18A, and the third tube 19A, and the cladding layer 14A and the main frame 13A, and the first tube 17A, the second tube 18A, and the third tube 19A can be bent adaptively, instead of being forced to bend together. It should also be mentioned that the coating layer 14A and the first, second and

third tubes

17A, 18A, 19A are made of different materials, and therefore produce different forces during bending, and are in relatively movable contact, so that these forces of different strengths can be accommodated, and local stress concentrations during bending can be avoided or reduced, which makes the mirror body 10A susceptible to breakage.

In this embodiment of the present invention, the plurality of channels includes at least four channels, which are the working channel 110A, the water inlet channel 120A, the water outlet channel 130A, and the information channel 140A, respectively. A plurality of the channels are arranged according to preset positions so as to correspondingly bear different functions.

In one embodiment of the present invention, in the first working area 111A, three of the channels, i.e., the working channel 110A, the information channel 140A and the water inlet channel 120A, are arranged substantially linearly, and preferably, the three channels have the same size, i.e., the diameter of the working channel 110A, the diameter of the information channel 140A and the diameter of the water inlet channel 120A are substantially the same, so that a user can select the channel according to actual use conditions. That is, the working channel 110A is not limited to passing through the working device, but may also be used for flushing or passing through the information collecting device 30A, the water inlet channel 120A is not limited to flushing or inwardly flowing water, but may also be used for passing through the working device or passing through the information collecting device 30A, and the information channel 140A is not limited to passing through the information collecting device 30A, but may also be used for passing through water or passing through the working device.

It is worth mentioning that the internal environment of the human body is complex, and due to factors such as human respiration and blood flow, the internal environment of the human body is in dynamic change, and the internal environment of different people is different, according to the embodiment of the present invention, the mirror main body 10A has a plurality of channels that can be flexibly selected, and an operator can select a corresponding channel to work according to the situation in the actual operation process, for example, when the information collected by the information channel 140A located in the middle is not clear or is blocked, the water inlet channel 120A or the working channel 110A located in the edge position can be selected to be introduced into the information collecting device, so as to observe the internal environment state more clearly. Correspondingly, when the water flushing or the stone breaking operation is carried out, the water flushing channel or the stone breaking channel can be adjusted according to the actual operation condition.

Further, in one embodiment of the present invention, the multichannel ureteroscope 100A includes an outer layer 15A, and the outer layer 15A is attached to the outer surface of the scope body 10A for improving the surface properties of the scope body 10A, for example, the outer layer 15A is used for enhancing the surface flatness of the scope body 10A, so that the surface of the scope body 10A is smoother and thus easier to enter the body.

Preferably, the outer layer 15A is a super-lubricious coating for reducing the outer surface drag of the mirror body. In one embodiment, the outer layer 15A is formed on the outer surface of the mirror body 10A by plasma enhanced chemical vapor deposition. It is worth mentioning that a nano coating is formed on the surface of the mirror main body 10A in a plasma enhanced chemical vapor deposition manner, so that the smoothness of the surface of the mirror main body 10A can be greatly improved, and the thickness of the nano coating is very thin, so that the overall hardness of the mirror main body 10A is not affected.

Further, in one embodiment of the present invention, the mirror body 10A has an identifier 16A, and the identifier 16A is provided on an outer surface of the mirror body 10A. The identifier 16A is illustratively, but not limited to, a scale mark. It is worth mentioning that the identifier 16A cooperates with the information collecting device 30A to assist the operator in performing the surgical operation. For example, when the operator performs use, the image information in front of the working end 11A of the mirror main body 10A is observed by the information collection device 30A, and the depth of entry is observed by the identifier 16A, thereby better determining the treatment position. Preferably, the identifier 16A is located on the outer layer 15A and is a different color than the outer layer 15A.

Figure 15 is a schematic view of the scope body of a multichannel ureteroscope according to a third preferred embodiment of the present invention. Figures 16A-16C are schematic views of the curves of a multichannel ureteroscope according to the above-described embodiments of the present invention entering various locations in the body.

Referring to fig. 15-16C, a multichannel ureteroscope 100B according to a third embodiment of the present invention is illustrated. In this embodiment of the invention, the multichannel ureteroscope 100B includes a flexible head 114B, and the flexible head 114B is located at the front of the scope body 10B.

The working channel 110B, the water inlet channel 120B and the exhaust channel 130B each extend to the flexible head 114B, that is, the flexible head 114B forms the working end 11B of the mirror body.

Referring to fig. 15, the mirror body 10B includes a main frame 13B and a cladding layer 14B, and the cladding layer 14B is clad on the main frame 13B. Preferably, the main frame 13B is embedded in the covering layer 14B.

The mirror main body 10B includes a back region 101B and an abdomen region 102B, the back region 101 being located above, the abdomen region 102 being located below, and the main frame 13B being located in the back region 101. That is, the abdominal region 102 does not have the main frame 13B, so that the back region 101B and the abdominal region 102B are formed with different hardness and bending property.

It should be noted that the different structures of the back region 101B and the abdomen region 102B are arranged to correspond to the working area of the scope body 10B and to cooperate with the guiding process of the guide wire 200B. For example, upon entry, the dorsal region 101B enters along the guide wire 200B and is located above the guide wire 200B, i.e. is mounted on the guide wire 200B, so that a relatively stiff structure can better follow the guide wire 200B, whereas the ventral region 102B is located below, upon entry into the bladder, the scope body 10B needs to be bent inwards, i.e. in the direction of the ventral region 102B, so that the relatively soft ventral region 102B is more adapted to the course of the inner bend.

Further, the water inlet passage 120B, the working passage 110B, and the information collecting device 30B are located above and near the back area 101B. The drain 130B is located below, near the belly region 102B.

Further, the main frame 13B includes a longitudinally extending ridge 131B and a plurality of lateral reinforcing ribs 132B, the longitudinally extending ridge 131B extends along the length direction of the mirror body 10B, and the lateral reinforcing ribs 132B are curvedly connected to both sides of the main frame 13B. Preferably, a plurality of the transverse reinforcing ribs 132B are arcuately and symmetrically distributed on both sides of the longitudinally extending ridge 131B, and the transverse reinforcing ribs 132B are tapered from the longitudinally extending ridge 131B to an outer diameter.

Preferably, the lateral reinforcing ribs 132B are uniformly spaced.

In one embodiment of the invention, the transverse stiffening ribs 132 are movably connected with the longitudinally extending ridges 131 to facilitate bending of the mirror body 10B 10.

The bendable head 114B includes a filling body 1141B and a bent bone 1142B, and the filling body 1141B covers the bent bone 1142B. The curved bone 1142B includes an extension ridge 11421B and a plurality of reinforcing ribs 11422B, the extension ridge 11421B extends along the length direction of the mirror body 10B, and the reinforcing ribs 11422B are distributed on both sides of the extension ridge 11421B in a curved manner.

Further, the stiffening ribs 11422B are progressively spaced longitudinally in an outward direction from the mirror body 10B to accommodate changes in the smaller arc and different curvatures at different locations.

For example, when the multichannel ureteroscope 100B is used for treating nephrolithiasis, after entering a human body, the organs through which the scope body 10B passes are urethra, bladder, ureter, which need to adapt to the curvature of the path, such as a curve with a small arc when entering bladder from urethra, and need to have good guidance when entering, and the bendable head 114B finally needs to enter into renal pelvis, and needs to enter into renal calyx at different positions, so that it needs to be flexibly bent, and bent at various angles, and therefore, in the embodiment of the present invention, the structural design of the back region 101B and the abdomen region 102B of the scope body 10B, and the reinforcing ribs in the main frame 13B are arranged at equal intervals, so that it can have proper bending curvature, and can have guidance for teaching, in the position of the bendable head 114B, the plurality of reinforcing ribs 11422B of the bendable bone 1142B are gradually spaced, so as to form different bending arcs in different positions in cooperation with the control wire, and to meet the bending requirements of large and small parts in the body.

Preferably, in one embodiment of the invention, the mirror body 10 has a dimension F13, the exhaust channel has a dimension F5.4, and the corresponding exhaust channel has a diameter of 1.72 mm. The examples of the present invention are compared with the combinations of two kinds of soft lenses 1P and a sheath 2P which are commonly used with reference to table 1. The conventional soft lens 1P and the sheath 2P are fitted with the inner and outer ferrules, and the annular gap 101P between the soft lens 1P and the sheath 2P forms a suction space, and the width W1-W2 of this space is a direct factor determining the size capable of sucking out the crushed stone.

TABLE 1

As is clear from the above table, in the case where the overall sizes are substantially the same, the corresponding suction spaces between F12 and F14 are greatly different, and in the suction manner in which the conventional soft lens 1P and the lens sheath 2P are fitted, even the width of the ideal maximum suction space is only 1.27mm, whereas the width of the suction space of the embodiment of the present invention, i.e., the diameter D of the discharge passage 130, may reach 1.72mm, and the suction size is increased by 72%, so that larger-sized crushed stone impurities can be sucked out without powdering the crushed stone, while the blockage in the discharge passage is reduced, so that the crushed stone impurities can be sucked out quickly.

In the first and second embodiments, the cross-section of the discharge passage 130 is elliptical and circular, respectively, and in other embodiments of the present invention, the cross-section of the discharge passage 130 may have other shapes, for example, but not limited to, trapezoidal, crescent, semicircular, fan-shaped, irregular curved, etc., with reference to fig. 18A-18C.

Figure 19 is a transverse cross-sectional schematic of a multichannel ureteroscope according to an embodiment of the present invention. In the above-described embodiment of the present invention, the mirror body 10 has at least four channels, and in another embodiment of the present invention, the mirror body 10 has at least three channels, two of which are located in the first working region and the other of which is located in the second working region.

And the two channels positioned in the first working area are respectively used for passing through the information acquisition device or through a working instrument or flushing. The channel in the second working area is used for passing through a guide component such as a guide wire or discharging sundries.

It should be noted that, in the embodiment of the present invention, the information collecting device 30 is not fixed to the scope body 10, but provides an independent channel, so that it is convenient to replace different types of devices to work cooperatively, such as different types or models of cameras, light sources, sensors, etc., so that the functions of the multi-channel ureteroscope are more diversified.

FIG. 20 is a schematic cross-sectional view of the scope body of a sheath-less ureteroscope according to a fifth preferred embodiment of the present invention.

In this embodiment of the invention, the first working area 111 of the mirror body 10 has one channel and the second working area 112 has one channel. The channel of the first working area 111 may be the working channel 110 and/or the water inlet channel 120 and/or the information channel 140, and the channel of the second working area 112 may be the discharge channel 130. That is, in this embodiment of the invention, the mirror body 10 has at least two channels. One of the channels is located in the first working area 111 and can be used for flushing, introducing a therapeutic device and introducing the information acquisition device 30, and the other channel is located in the second working area 112, and the channel of the second working area 112 is used for discharging sundries, so that the entering function and the discharging function are divided into different areas.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. Multichannel ureteroscope, its characterized in that includes:

an operating handle; and

a mirror main part, wherein the mirror main part includes a work end and an operation end, the operation end is connected the operating handle, mirror main part extends integratively between work end and the operation end, mirror main part has a plurality of passageways, and one of them passageway is the discharge passage, the discharge passage is used for sending into supplementary guide part and discharge debris.

2. The multichannel ureteroscope of claim 1, wherein the scope body has at least two channels, one of which is a working channel and the other of which is the drainage channel.

3. The multichannel ureteroscope according to claim 1, wherein the scope body has at least three channels, namely a water inlet channel for feeding water, a working channel for passing a working instrument and/or an information acquisition device, and the discharge channel.

4. The multichannel ureteroscope of claim 1, wherein the scope body has at least four channels, namely a water inlet channel for passing water, a working channel for passing a working instrument, a discharge channel and an information channel for passing an information acquisition device.

5. The multichannel ureteroscope of claim 3, wherein the water inlet channel and the working channel are located on opposite sides of the information channel.

6. The multichannel ureteroscope of claim 3, wherein the inlet channel, the exhaust channel, and the information channel are in a collinear arrangement.

7. The multichannel ureteroscope of any of claims 2-5, wherein the working channel has a first outlet, the water inlet channel has a second outlet, the first outlet, the second outlet, and the information acquisition device form a first working area of the working end, the drain channel has a third outlet, the third outlet forms a second working area of the working end, and the first working area and the second working area are disposed on opposite sides.

8. The multichannel ureteroscope of claim 6, wherein the first working region and the second working region form a rounded step structure.

9. The multichannel ureteroscope of any of claims 1-5, wherein the scope body comprises a main frame and an insert layer, the insert layer covering the main frame, the main frame comprising at least one elongate spine extending along the scope body and a series of reinforcing ribs connected to the longitudinally extending spine in a side-by-side, annular fashion.

10. The multichannel ureteroscope of any of claims 1-5, wherein the cross-sectional shape of the drainage channel is selected from the group consisting of: one of a circle, an ellipse, a polygon and a crescent.