CN212574833U

CN212574833U - Sheath-free ureteroscope

Info

Publication number: CN212574833U
Application number: CN202021878991.0U
Authority: CN
Inventors: 程跃; 刘冠琳; 谢国海
Original assignee: Ningbo First Hospital
Current assignee: Ningbo Xinwell Medical Technology Co Ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2021-02-23
Anticipated expiration: 2030-09-01

Abstract

The utility model discloses an exempt from sheath ureteroscope, wherein exempt from sheath ureteroscope includes an operating handle and a mirror main part, wherein the mirror main part includes a working end and an operating end, the operating end is connected operating handle, the mirror main part extend in integratively between working end and the operating end, the mirror main part has a working channel, an inlet channel and a discharge passage, the working channel is used for passing therapeutic equipment, the inlet channel is used for sending into rivers, discharge passage is used for sending into supplementary guide part and discharge debris.

Description

Sheath-free ureteroscope

Technical Field

The utility model relates to the field of medical equipment, still further, relate to a exempt from sheath ureteroscope.

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 having a diameter of 0.2 to 0.5cm is inserted through a ureteroscope, a urethra, a bladder, and a ureter orifice, and a monitoring device is connected to the ureteroscope, so that a lesion in the ureter or a renal pelvis can be clearly observed, and thus, ureteral diseases can be diagnosed or treated by using various instruments inserted into a working cavity.

Ureteroscopes currently used mainly include hard ureteroscopes and soft ureteroscopes, in which the hard ureteroscopes, i.e., ordinary ureteroscopes, are used to treat ureteral stones, etc., and are suitable for treating ureteral stones due to their relatively hard and inflexible main bodies, i.e., they are suitable for treating relatively straight or linear parts, while the soft ureteroscopes may be used to treat ureteral stones, such as renal pelvis and renal calyx stones, etc., 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 flexible ureteroscope is used for treating a ureteral calculus of a patient, a guide wire is firstly passed through one of the working channels of the flexible ureteroscope, the flexible ureteroscope with the guide wire 4P is fed into the body, the guide wire 4P is fed into the ureter, the sheath 2P and the inner core 3P are inserted along the guide wire, the flexible ureteroscope sheath is inserted to a position 0.5-1cm away from the calculus, the inner core 3P is withdrawn, the flexible ureteroscope body 1P is fed into the sheath 2P, the flexible ureteroscope body 1P is close to the calculus, a flushing operation, a stone breaking operation and the like are carried out through a treatment instrument of the working channel, and the broken calculus and waste water can be fed out through a gap between the flexible ureteroscope 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 is basically dependent 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, so that the waste discharge is very difficult, and is usually 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 damage.

Fourth, medical devices, especially such medical devices for internal use, are generally required to be disposable, that is, the scope and usage amount 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 the soft lens.

Fifthly, which is also more important, the soft lens body has the advantage of easy bending, but it must be used with the lens sheath, which is relatively hard, so that it can only stay in the ureter, and it can not reach the renal pelvis, calyx or the part needing bending, when the waste material is removed after the lithotripsy, the suction force generated by the port of the lens sheath is needed to suck the lithotripsy and waste water at a far position, such as the renal pelvis, and the remote suction is not easy to control, on one hand, the suction force is too large, the suction force has influence on human organs, the suction force is too small, the waste material is discharged with poor efficiency, and the waste material can not be discharged completely, and in most cases, the waste material remains especially at 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.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an exempt from sheath ureteroscope, wherein exempt from sheath ureteroscope and do not need the additional action of mirror sheath to avoid the operation process of mirror sheath at the in-process that uses, avoid the blind operation to the mirror sheath.

Another object of the present invention is to provide a sheath-free ureteroscope, wherein the sheath-free ureteroscope does not require the auxiliary function of a sheath, so that the working size is not reduced, the overall diameter is reduced, and the damage of medical equipment to the body organ is reduced.

Another object of the present invention is to provide a sheath-free ureteroscope, wherein the sheath-free ureteroscope itself has a discharge passage, which is used for discharging waste materials, so that the waste materials can be discharged without the aid of the cooperation of a sheath.

Another object of the present invention is to provide a sheath-free ureteroscope, wherein the sheath-free ureteroscope can increase the effective utilization space of the debris sundries, so that the debris sundries of larger size can be discharged, the size of the debris is reduced, and the pulverized debris is not needed.

Another object of the present invention is to provide a sheath-free ureteroscope, wherein the sheath-free ureteroscope reduces the repeated process of smashing of the broken stone, thereby reducing the loss of broken stone process energy and improving the work efficiency.

Another object of the present invention is to provide a sheath-free ureteroscope, wherein the sheath-free ureteroscope can discharge sundries while crushing stones and flushing water, so that flushing water and discharging sundries tend to be balanced, thereby avoiding the rise of renal pressure.

Another object of the present invention is to provide a sheath-free ureteroscope, wherein the discharge passage is integrally connected to the sheath-free ureteroscope, so that both the working device and the fluid can smoothly enter and exit.

Another object of the present invention is to provide a sheath-free ureteroscope, wherein the ureteroscope forms an independent discharge passage, and does not need to be discharged through a gap formed by a sheath interlayer, so as to increase the effective size of the suction work and facilitate the discharge of sundries.

Another object of the present invention is to provide a sheath-free ureteroscope, wherein the suction port of the discharge passage is consistent with the image capturing position, so as to realize visual suction with a target.

Another object of the utility model is to provide a exempt from sheath ureteroscope, wherein escape route's attraction mouth is unanimous with working channel open position to can realize the rubble position and attract the unanimity of position, promptly, realize closely attracting.

Another object of the present invention is to provide a ureteroscope, wherein the main body of the ureteroscope includes a main frame and a covering layer, the covering layer covers the main frame, so that the flexible covering layer and the relatively hard main frame are fused together, and the ureteroscope is interposed between the soft lens and the semi-hard lens.

Another object of the present invention is to provide a sheath-free ureteroscope, wherein the scope main body has a water inlet channel, a working channel and a discharge channel, the water inlet channel the working channel with the discharge channel is arranged side by side.

Another object of the present invention is to provide a ureteroscope, wherein the ureteroscope includes an information collecting device, the information collecting device is located the tip of the scope main body, the tip of the information collecting device with the port position of the discharge passage closes on.

Another object of the present invention is to provide a sheath-free ureteroscope, wherein the sheath-free ureteroscope has a uniform overall structure and is convenient to independently pass in and out of a body part.

Another object of the present invention is to provide a sheath-free ureteroscope, wherein the sheath-free ureteroscope does not require a sheath, and auxiliary components are reduced, so as to reduce the cost of operation consumables.

It is another object of the present invention to provide a sheath-free ureteroscope, wherein in one embodiment, the water inlet channel, the working channel and the drainage channel are formed by different continuous tubes, and the main frame and the coating layer constrain the positions of the tubes.

Another object of the utility model is to provide an exempt from sheath ureteroscope, wherein exempt from sheath ureteroscope includes a flexible head, flexible head connect in the mirror main part, the crookedness of flexible head with the crookedness of mirror main part is mutually supported, adapts to the crooked demand at internal big position and little position more.

In order to achieve at least one of the above objects, an aspect of the present invention provides a sheath-free ureteroscope, which 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, the mirror main part extends in integratively between work end and the operation end, the mirror main part has a working channel, a inhalant canal and a discharge passage, the working channel is used for passing therapeutic equipment, the inhalant canal is used for sending into rivers, the discharge passage is used for sending into supplementary guide part and discharge debris.

According to an embodiment of the utility model discloses a sheath-free ureteroscope, it includes an information acquisition device, information acquisition device be installed in the mirror main part the work end, information acquisition device can communicatively connect in a display device.

According to an embodiment of the utility model, exempt from sheath ureteroscope, wherein working channel has a first export, the water inlet channel has a second export, first export with the second export is located respectively information acquisition device's both sides.

According to an embodiment of the utility model, exempt from sheath ureteroscope, wherein the working channel has a first export, the water inlet channel has a second export, first export, the second export, and information acquisition device forms the first workspace of working end, the escape route has a third export, and the third export forms the second workspace of working end, first workspace with second workspace sets up to the opposite side ground.

According to an embodiment of the utility model discloses a sheath-free ureteroscope, wherein first workspace with second workspace forms fillet stair structure.

According to an embodiment of the utility model discloses a exempt from sheath ureteroscope, wherein the mirror main part includes a main skeleton and an embedding layer, embedding layer cladding main skeleton.

According to an embodiment of the utility model discloses a exempt from sheath ureteroscope, wherein main skeleton includes two longitudinally extending spines and a series of enhancement rib, longitudinally extending spine follows the scope main part extends, a series of enhancement rib connect side by side, be annular two between the extension spine.

The sheath-free ureteroscope according to one embodiment of the present invention, wherein the scope body includes an outer layer attached to an outer surface of the scope body for improving surface properties of the scope body.

The sheath-less ureteroscope according to one embodiment of the present invention, wherein the scope body has an identifier disposed on an outer surface of the scope body.

Drawings

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

Fig. 2A is a schematic view of the working system of the sheath-less ureteroscope according to a preferred embodiment of the present invention.

Fig. 2B is a schematic perspective view of a sheath-less ureteroscope, according to a preferred embodiment of the present invention.

Fig. 3A is an angle schematic view of the scope body of the sheath-less ureteroscope according to the present invention.

Fig. 3B is an angle schematic view of the scope body of the sheath-less ureteroscope according to the present invention.

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

Fig. 5A is a schematic working end elevation view of the sheath-less ureteroscope according to the above embodiment of the present invention.

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

Fig. 6A is a schematic longitudinal sectional view taken along line B-B in fig. 5B.

Fig. 6B is a schematic longitudinal sectional view taken along line C-C in fig. 5B.

Fig. 7A-7B are schematic diagrams of two guided access procedures of the sheath-less ureteroscope, according to the above-described embodiments of the present invention.

Fig. 8-9 are schematic views of the operation of the sheath-less ureteroscope into the renal pelvis, according to the above-described embodiment of the present invention.

Fig. 10A is a schematic view of the working system of a sheath-less ureteroscope according to a second preferred embodiment of the present invention.

Fig. 10B-10C are schematic perspective views from different angles of a sheath-less ureteroscope according to a second preferred embodiment of the present invention.

Fig. 11A is an angular schematic view of the scope body of a sheath-less ureteroscope according to a second preferred embodiment of the present invention.

Fig. 11B is another schematic angle view of the scope body of the sheath-less ureteroscope according to a second preferred embodiment of the present invention.

Fig. 12 is a schematic view of a process for forming a scope body of a sheath-less ureteroscope according to a second preferred embodiment of the present invention.

Fig. 13A is a schematic working end elevation view of a sheath-less ureteroscope, according to a second 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.

Fig. 15 is a schematic view of the scope body of a sheath-less ureteroscope according to a third preferred embodiment of the present invention.

Figures 16A-16C are schematic views of curves for the sheath-less ureteroscope to access different locations in the body, according to the above-described embodiments of the present invention.

Fig. 17 is a schematic diagram comparing the drainage channel formed by a sheath-free ureteroscope according to an embodiment of the present invention with a suction space formed by a prior art soft scope and a scope sheath.

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

Fig. 19 is a schematic cross-sectional view of the scope body of a sheath-less ureteroscope according to a fourth preferred 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 a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

References to "one embodiment," "an embodiment," "example embodiment," "various embodiments," "some embodiments," etc., indicate that the embodiment of the invention 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.

Fig. 2A is a schematic view of the working system of the sheath-less ureteroscope according to a preferred embodiment of the present invention. Fig. 2B is a schematic perspective view of a sheath-less ureteroscope, according to a preferred embodiment of the present invention. Fig. 3A is an angle schematic view of the scope body of the sheath-less ureteroscope according to the present invention. Fig. 3B is an angle schematic view of the scope body of the sheath-less ureteroscope according to the present invention. Fig. 4 is a schematic view of a process for forming a scope body of the sheath-less ureteroscope according to the above-described embodiment of the present invention. Fig. 5A is a schematic working end elevation view of the sheath-less ureteroscope according to the above embodiment of the present invention. 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. Fig. 7A-7B are schematic diagrams of two guided access procedures of the sheath-less ureteroscope, according to the above-described embodiments of the present invention. Fig. 8-9 are schematic views of the operation of the sheath-less ureteroscope into the renal pelvis, according to the above-described embodiment of the present invention.

Referring to fig. 2A-9, the present invention provides a sheath-less ureteroscope 100 for the treatment of 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 sheath-less ureteroscope 100 can also be used for other treatments of diseases, and the use of the sheath-less ureteroscope 100 is not a limitation of the present invention.

The sheath-free 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 other words, 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 mirror 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 mirror body 10 enters the body is consistent, and the mirror 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 connected interface on the whole outer surface of the mirror body 10, so that the mirror body 10 stably enters 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, the operating element 21 being 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 sheath-less ureteroscope 100 includes a control wire, which is pre-arranged 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 sheath-free ureteroscope 100 includes an information collecting device 30, and the information collecting device 30 is mounted to the working end 11 of the scope body 10. The collection surface of the information collection device 30 is consistent with the outer side surface of the working end 11. That is, the collecting device collects forward image information while the mirror body 10 travels forward, and the operator can observe the collected image information, thereby targetedly controlling the travel of the mirror body 10 according to the collected image information.

In an embodiment of the present 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, 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 way, namely, 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 an embodiment of the present invention, the information collecting device 30 is fixed to the working end 11 of the mirror main body 10, the end surface of the information collecting device 30 is identical to the end surface of the mirror main body 10, that is, the surface of the information collecting device 30 does not protrude from the outer surface of the working end 11 of the mirror main body 10. Preferably, the information acquisition device 30 is embedded in the working end 11 of the mirror body 10. In another embodiment of the present invention, the information collecting device 30 is movably connected to the mirror main body 10.

Referring to fig. 3A-3B, the mirror body 10 has a working channel 110 and a water inlet channel 120, the working channel 110 is used for the ingress and egress 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 sheath-less ureteroscope 100 is used for treating a calculus 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 calculus.

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 portions 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 channel 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 sheath-less ureteroscope 100 is used to treat a calculus disease, crushed stones in the body are discharged together with waste water from the discharge passage 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 disposed in parallel with and spaced apart from the working passage 110 and the water 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 is worth mentioning that, traditional soft mirror of taking the sheath, its drainage channel is formed by the gap between sheath and the soft mirror, that is to say, the inside soft mirror that contains of passageway, and the technical scheme of the utility model, discharge channel 130 is inside to be a hollow structure, and inside does not have other parts, therefore whole inner space all is effectual discharge space to debris waste material exhaust's efficiency has been improved widely.

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 and 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 at a transverse connecting line position of the information acquisition device 30, and the third outlet is located at a longitudinal connecting line position 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 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 where the suction force is generated is close to the position of the crushed stone, so as to achieve 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 device 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 aperture 26, the adjustment aperture 26 being 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 discharging passage 130 is substantially elliptical, and the third outlet 1302 is substantially elliptical, so as to maximize the utilization of the spatial position of the mirror main body 10, so that the internal space of the discharging passage 130 is maximized, increasing the effective space of the waste discharge, thereby discharging the internal sundries more rapidly, avoiding the formation of accumulated water in the body, and reducing the residual. In other embodiments of the present invention, the cross-section of the discharge channel 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, traditional soft mirror of taking the sheath, its drainage channel is roughly annular, and the space that it can utilize only has an annular gap, and consequently the discharge efficiency is very low to the rubble takes place to block up easily, and the technical scheme of the utility model among, utilize drainage channel 130's independent, hollow structural design makes drainage channel 130's effective space maximize to reduce the jam of rubble, make debris can be smooth and easy, discharge fast.

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 to be outwardly convex. 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 structure 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 in vivo. 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 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 step-structured arrangement of the first working area 111 and the second working area 112 further distinguishes the functions of the first working area 111 and the second working area 112. 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 downwards, at this time, the second working area 112 located behind the lower side of the first working area 111 rapidly sucks the impurities, 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, so that 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 spatial 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 spatial utilization rate. For example, the water inlet channel 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 a holmium laser, needs to be kept, the working end face is clearly visible, so that an operator can clearly control the lithotripsy apparatus, and therefore 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 third, the entering water is clear water, and the water flow is directly flushed into the body, so that the water pressure cannot be too large, so that the water flow requirement of the entering water is relatively small under the condition of satisfying the flushing, and the drainage channel 130 needs to discharge the lithotripsy impurities as fast as possible, and the discharged water is not clear water, but a mixture of the impurities and water, so that on one hand, the water needs to be discharged fast, and on the other hand, the lithotripsy impurities with large size can pass through, so that in the embodiment of the present invention, the water inlet channel 120 and, the working areas are separated from each other, and the working size and the functional requirements are matched with each other, so that the efficiency of breaking and discharging stones is integrally improved. The sheath-free ureteroscope 100 can discharge sundries while performing stone breaking and flushing, and modulates the flow relation between flushed water and sucked sundries, so that flushing and sundries discharging tend to be balanced, and the increase of renal 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 main 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 main body 10 is enhanced in a state where the mirror main body 10 is kept somewhat flexible, so that the mirror main body 10 has a good guidance, and can independently enter and exit a human body 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, by combining the soft and hard materials with each other in this way, 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 10 can be moved into and out of the human organ independently. Preferably, the coating layer 14 integrally coats the main frame 13.

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

For example, in one embodiment of the present invention, when manufacturing the mirror body 10, the main frame 13 with a predetermined shape may be manufactured in advance, and then the main frame 13 is placed in a mold, so that the material of the coating 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 cladding 14 material.

Referring to fig. 4, the main frame 13 includes at least one longitudinally extending ridge 131 and a plurality of lateral reinforcing ribs 132, the longitudinally extending ridge 131 extending in a length direction of the mirror body 10, and the lateral 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 reinforcing rib 132 is 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 the two longitudinally extending ridges 131.

In one embodiment of the present 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 an embodiment of the present invention, referring to fig. 3A-3B, the sheath-less ureteroscope 100 includes an outer layer 15, 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 smoothness of the scope body 10, so that the surface of the scope body 10 is smoother and thus easier to enter 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, which can greatly improve the smoothness of the surface of the mirror main body 10, and the thickness of the nano coating is very thin, which does not affect the overall hardness of the mirror main body 10.

Further, in one embodiment of the present invention, the mirror body 10 has an identifier 16, the identifier 16 being disposed on an outer surface of the mirror body 10. The identifier 16 is exemplified but not limited to a scale mark. 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 means 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 of the use of the sheath-less ureteroscope 100 according to embodiments of the present disclosure is shown. Taking the example of the sheath-less ureteroscope 100 being used for the procedure of treating a stone in a renal pelvis, a guide wire 200 is first inserted from the third port 24 of the operation 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 endoscope 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 endoscope main body 10 close to the position of the calculus according to an image displayed on the image acquisition device by controlling the operating handle 20, a working instrument for putting the calculus in the working channel 110, such as holmium laser, rubbles are carried out by the holmium laser, and water is simultaneously injected into the water inlet channel 120 by a water flushing device, so that water flows out through the second outlet 1202 of the water inlet channel 120 to flush the position of the calculus, and the crushed calculus and waste water are discharged from the discharge channel 130 together, for example, the crushed calculus can be sucked out by 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 present invention, the sheath-less ureteroscope 100 is advanced into the ureter by two guide wires 200, rather than being guided by an inner core 300. Of course, in other embodiments of the present invention, the sheath-less ureteroscope 100 may be guided into the body by other guiding components.

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 assistance of other parts.

It is worth mentioning that, in the process of using the sheath-free ureteroscope 100 of the present invention, no auxiliary component, such as the auxiliary function of the scope sheath, is required, so that the operation process of the scope sheath is reduced in the operation process, the operation process is simplified, and the requirement for the operator is reduced. The sheath-free 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 can 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 sheath-free ureteroscope 100 is adjacent to the second outlet 1202, i.e. the position of the gravels, so that sundries can be sucked at a short distance, 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 should also be mentioned that, in the process of using the existing ureteroscope, the crushed stone needs to be discharged under the auxiliary action of the sheath, the efficiency of discharging the crushed stone is low, and the discharge space is narrow, so in order to discharge the crushed stone as much as possible, the crushed stone needs to be powdered, that is, the size of the crushed stone is as small as possible, for example, the size of the gap is smaller, but the size of the crushed stone of the existing crushed stone equipment cannot reach the size as small as this, the crushed stone needs to be repeated, that is, the crushed stone needs to be crushed again, in this case, the stones of various sizes are doped with each other, so the efficiency of crushing the crushed stone is further reduced, and more crushed stones can be discharged by repeating the work many times, therefore, the energy loss of the whole process is larger, the work efficiency is lower, and the operation time is longer, but in the embodiment of the utility model, the effective space of the calculus removing of the sheath-free ureteroscope 100 is greatly increased, so that pulverized calculus is not needed, and larger-sized calculus can be discharged, thereby reducing energy loss and operation time.

Fig. 10A is a schematic view of the working system of a sheath-less ureteroscope according to a second preferred embodiment of the present invention. Fig. 10B-10C are schematic perspective views from different angles of a sheath-less ureteroscope according to a second preferred embodiment of the present invention. Fig. 11A is an angular schematic view of the scope body of a sheath-less ureteroscope according to a second preferred embodiment of the present invention. Fig. 11B is an angular schematic view of the scope body of a sheath-less ureteroscope according to a second preferred embodiment of the present invention. Fig. 12 is a schematic view of a process for forming a scope body of a sheath-less ureteroscope according to a second preferred embodiment of the present invention. Fig. 13A is a schematic working end elevation view of a sheath-less ureteroscope, according to a second embodiment of the present invention. Fig. 13B is a schematic transverse sectional view taken along line D-D in fig. 10A.

Referring to fig. 10A-14B, a sheath-less ureteroscope 100A according to a second embodiment of the present invention is illustrated, and the present invention provides a sheath-less 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 sheath-less ureteroscope 100A can also be used for other treatments of diseases, and the use of the sheath-less ureteroscope 100A is not a limitation of the present invention.

The sheath-less ureteroscope 100A includes a scope body 10A and an operation handle 20A, and the operation handle 20A is used for controlling the operation of the scope body 10A. Further, the operating knob 20A controls turning of the end 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 operating end 12A is the end that is located outside the body for operation 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 extended between the working end 11A and the operation end 12A by the same material or structure, 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 is worth mentioning that, in the technical scheme of the utility model, mirror main part 10A mid portion extend integratively work end 11A with between the operation end 12A, that is to say, mirror main part 10A's surface is whole not to have seam or the interface of connection, thereby makes mirror main part 10A gets into internally steadily. 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 an embodiment of the present invention, the sheath-less 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, when the operating element 21A of the operating handle 20A is rotated, the control wire 113A pulls the working end 11A of the scope body 10A, so that the end of the scope body 10A is controlled to rotate to the predetermined direction by the operating handle 20A.

According to this embodiment of the present invention, the working end 11A comprises a flexible head 114A, the flexible head 114A is 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 sheath-free ureteroscope 100A includes an information collecting device 30A, and the information collecting device 30A is mounted to the working end 11A of the scope body 10A. The collection surface of the information collection device 30A is consistent with the outer side surface of the working end 11A. That is, when the mirror body 10A travels forward, 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 10A targetedly based on the picked-up image information.

In an embodiment of the present invention, the information collecting device 30A can be communicatively connected to a display device 400, so that the image collected by the information collecting device 30A is displayed through 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 connected to the operating handle 20A by way of example but not limitation, through an optical fiber communication, 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 connected to the information collecting device 30A in a communication manner, 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 an embodiment of the present invention, the information collecting device 30A is fixed to the mirror main body 10A at the working end 11A, the end surface of the information collecting apparatus is identical to the end surface of the mirror main body 10A, that is, the surface of the information collecting device 30A does not protrude from the outer surface of the working end 11A of the mirror main body 10A. Preferably, the information acquisition device 30A is embedded in the working end 11A of the mirror body 10A.

In another embodiment of the present invention, the information collecting device 30A is movably connected to the mirror main body 10A. That is, the information collecting device 30A is located to form a communication channel along which the information collecting device can reach the working end 11A or project forward.

The mirror body 10A has a working channel 110A and a water inlet channel 120A, and the working channel 110A is used for the entrance and exit of a working instrument, 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 isolated in parallel, that is, the working channel 110A and the water inlet channel 120A operate independently of each other. For example, when the sheath-less ureteroscope 100A is used for treating a calculus disease, a working instrument for lithotripsy is passed through 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 calculus.

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 communicates with 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 mirror body 10A has a discharge passage 130A for discharging foreign materials in the body, such as, but not limited to, crushed stones, waste water, tumors, and the like. For example, when the sheath-less ureteroscope 100A is used to treat a calculus disease, crushed stones in the body are discharged together with waste water from the discharge passage 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 conveniently and smoothly 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 is worth mentioning that, traditional soft mirror of taking the sheath, its drainage channel is formed by the gap between sheath and the soft mirror, that is to say, the inside soft mirror that contains of passageway, and the technical scheme of the utility model, discharge channel 130A is inside to be a hollow structure, and inside does not have other parts, therefore whole inner space all is effectual discharge space to debris waste material exhaust's efficiency has been improved widely.

The discharge passage 130A has a third inlet 1301A and a third outlet 1302A, the third inlet 1301A communicates with the operation 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 as to facilitate visual discharge of debris and waste, and perform suction discharge with targeting.

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 should be noted 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 first outlet 1102A, the second outlet 1202A and the third outlet 1302A in two side regions, and mutual interference is reduced.

Preferably, the first outlet 1102A and the second outlet 1202A are located on a transverse connecting line of the information acquisition device 30A, and the third outlet is located on a longitudinal connecting 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 generating the suction force is close to the position of the crushed stone, so as to achieve close 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 lithotripter, 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 communicates with the working channel 110A, the second port 23A communicates with the water inlet channel 120A, and the third port 24A communicates 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 adjusting 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 foreign materials.

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 respectively located at two sides of the operating handle 20A, 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 discharging passage 130A is substantially circular, and the third outlet 1302A is substantially circular, so as to improve the space utilization of the mirror main body 10A, and improve the internal space of the discharging passage 130A, and increase the effective space of waste discharge, thereby discharging the internal sundries more quickly, avoiding forming accumulated water in the body, and reducing the residual. In other embodiments of the present invention, the cross-section of the discharge channel 130A may also be other shapes, such as a semi-circle, a sector.

It is worth mentioning that, traditional soft mirror of taking the sheath, its drainage channel is roughly annular, and the space that it can utilize only has an annular gap, and consequently the discharge efficiency is very low to the rubble takes place to block up easily, and the technical scheme of the utility model among, utilize drainage channel 130A's independent, hollow structural design makes drainage channel 130A's effective space maximize to reduce the jam of rubble, make debris can discharge smoothly, fast.

Further, in this embodiment of the present invention, the formation regions of the water inlet passage 120A, the information collecting device 30A, and the working passage 110A are extended to be outwardly convex. 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 end portions, thereby facilitating the entry or movement of the mirror body 10A in the body. 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 therefore are arranged in a partitioned manner so that the two functions can be independent from each other, and the substantially step-structured arrangement of the first working area 111A and the second working area 112A further distinguishes the functions of the first working area 111A and the second working area 112A. 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 used, thereby better isolating the rock breaking flushing process of the first working area 111A from the suction and discharge process of the working area.

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 coating layer 14A, and the coating layer 14A is coated 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 this way, 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 body organ independently.

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

For example, in one embodiment of the present invention, when manufacturing the mirror main body 10A, the main frame 13A with a predetermined shape may be manufactured in advance, 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 way of integral molding.

According to this embodiment of the present invention, the main frame 13A has a substantially annular 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 hardness. 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 the present embodiment of the present invention, the coating layer 14A is a tubular structure, the main frame 13A and the coating layer 14A are connected by fitting inside and outside, or the main frame 13A and the coating layer 14A are sleeved by fitting inside and outside.

Referring to fig. 12-14B, 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 drain 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 acquisition device 30A are arranged at predetermined positions.

In an embodiment of the present invention, the control line 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 an embodiment of the present invention, the bendable head 114A is formed of a flexible material, which facilitates bending, and the main frame may not be disposed at the position of the bendable head 114A.

In an 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 a predetermined diameter size in advance, and further, the first tube 17A, the second tube 18A and the third tube 19A and the information collecting device 30A are arranged in a predetermined position, and then the main frame 13A of the mesh structure is formed and covers the main frame 13A in the outside of 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 coating layer 14A and the main frame 13A internally and externally constrain the first, second and

third tubes

17A, 18A, 19A, but are not internally fixed by other media to the first, second and

third tubes

17A, 18A, 19A, that is, the first, second and

third tubes

17A, 18A, 19A can have a slight relative play in the space defined by the coating 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 tube 17A, the second tube 18A and the third tube 19A are made of different materials, so that the forces generated during bending are different, and the contact manner is relatively movable, so that the forces with different strengths can be adjusted, and the phenomenon that the mirror body 10A is easily damaged due to the concentration of local stress during bending can be avoided or reduced.

Further, in an embodiment of the present invention, the sheath-less 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 smoothness of the scope body 10A, so that the surface of the scope body 10A is smoother and thus easily enters 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 by means of plasma enhanced chemical vapor deposition, which can greatly improve the smoothness of the surface of the mirror main body 10A, and the thickness of the nano coating is very thin, which does not affect the overall hardness of the mirror main body 10A.

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 scope body 10A is observed by the information collecting 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.

Fig. 15 is a schematic view of the scope body of a sheath-less ureteroscope according to a third preferred embodiment of the present invention. Figures 16A-16C are schematic views of curves for the sheath-less ureteroscope to access different locations in the body, according to the above-described embodiments of the present invention.

Referring to fig. 15-16C, a sheath-less ureteroscope 100B according to a third embodiment of the present invention is illustrated. In this embodiment of the present invention, the sheath-less 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. rides on the guide wire 200B, so that the 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 bending inside.

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 drainage channel 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 present 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 two 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 smaller arcs and different curvatures at different locations.

For example, when the sheath-less ureteroscope 100B is used for treating nephrolithiasis, after entering the human body, the organs through which the scope body 10B passes are the urethra, bladder, ureter, which need to adapt to the curvature of the path during the entering process, such as a curvature with a small curvature when entering the bladder from the urethra, and need to have good guidance when entering, and the bendable head 114B finally needs to enter the renal pelvis and needs to enter the renal calyx at different positions, so that the bendable head 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 the bendable head 114B can have proper curvature and can have guidance, the spacing of the reinforcing ribs 11422B of the curved bone 1142B is gradually changed, so that the control wire can be bent at different positions, namely, different sizes of curved arcs can be formed, and the bending requirements of large and small parts in the body can be better met.

Preferably, in an embodiment of the present invention, the size of the mirror body 10 is F13, the discharge channel is F5.4, and the corresponding discharge channel diameter is 1.72 mm. Referring to table 1, the cooperation of two kinds of soft lenses 1P and a sheath 2P which are commonly used is compared with the embodiments of the present invention. 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 widths W1, W2 of this space are direct factors determining the size capable of sucking out crushed stones.

TABLE 1

It can be clearly seen from the above table that, under the condition that the overall size is approximately the same, the difference of the corresponding suction spaces between F12 and F14 is very large, and in the suction mode of the cooperation of the conventional soft lens 1P and the lens sheath 2P, the width of the maximum suction space is only 1.27mm even if it is ideal, but the width of the suction space of the embodiment of the present invention, that is, the diameter D of the discharge passage 130 can reach 1.72mm, and the suction size is increased by 72%, so that the crushed stone sundries with larger size can be sucked out, the crushed stone is not required to be pulverized, and the blockage in the discharge passage is reduced, so that the crushed stone sundries can be sucked out quickly.

In the first and second embodiments, the cross section of the discharge channel 130 is elliptical and circular, respectively, for illustration, and in other embodiments of the present invention, the cross section of the discharge channel 130 may be other shapes, for example, but not limited to, trapezoid, crescent, semicircle, fan, irregular curve, etc., with reference to fig. 18A-18C.

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 the channel of the second working area 112 may be the discharge channel 130. The information collecting device 30 is disposed beside the passage of the first working area 111.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims

1. Exempt from sheath 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 discharge passage, discharge passage is used for sending into supplementary guide part and discharge debris.

2. The sheath-free ureteroscope according to claim 1, wherein the scope body has a working channel for passing a treatment instrument or delivering a stream of water.

3. The sheath-free ureteroscope according to claim 1, wherein the scope body has a working channel for passing a treatment instrument and a water inlet channel for feeding a water stream.

4. The sheath-less ureteroscope according to claim 3, comprising an information collection device mounted to the working end of the scope body, the information collection device being communicatively connectable to a display device.

5. The sheath-free ureteroscope according to claim 4, wherein the working channel has a first outlet, the water inlet channel has a second outlet, and the first outlet and the second outlet are respectively located on two sides of the information collecting device.

6. The sheath-free ureteroscope according to claim 4, 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 collecting 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 disposed on opposite sides.

7. The sheath-free ureteroscope of claim 6, wherein the first working area and the second working area form a rounded step structure.

8. The intrathecal ureteroscope according to any of claims 1-7, wherein the scope body comprises a main frame and an insert layer, the insert layer covering the main frame.

9. The intrathecal ureteroscope according to claim 8, wherein the main backbone comprises a longitudinally extending spine extending along the scope body and a series of transverse stiffening ribs connected in parallel to the longitudinally extending spine.

10. The intrathecal ureteroscope according to any of claims 1-7, wherein the scope body has an identifier disposed on an outer surface of the scope body.