CN115919242A - Tip for ureteroscope and front-view ureteroscope - Google Patents

Abstract

The invention discloses a tip for a ureteroscope and an orthophoria type ureteroscope. This ureteroscope is with anterior end includes: a tip portion which is provided at a tip end of the mirror body and has an image pickup end surface and a suction end surface located in front of the image pickup end surface, wherein the tip portion further includes a suction hole penetrating forward and backward to form a suction opening at the suction end surface, and the suction hole of the tip portion is provided to communicate with a suction passage of the mirror body; and an image acquisition device, wherein the image acquisition device comprises a camera mounted on the camera end face of the tip portion, and an optical axis of the camera is parallel to a central axis of the suction hole, so that the suction opening of the suction hole of the tip portion is within a field of view of the camera.

Description

Tip and front-view ureteroscope for ureteroscope

Technical Field

The invention relates to the technical field of medical instruments, in particular to a tip for a ureteroscope and an orthophoto ureteroscope.

Background

Urinary calculus is a common disease, and according to statistics, the prevalence rate of adult urolithiasis is as high as 6.5%, and the 5-year recurrence rate is as high as 50%, and the urinary calculus is in a trend of rising year by year, thereby seriously threatening the health of people. In recent years, with the development of minimally invasive treatment techniques, ureteroscopy has become an important treatment for such diseases. The existing ureteroscope equipment for the urinary calculus removal operation mainly comprises a hard scope and a soft scope, wherein the hard scope is only suitable for diagnosis and treatment of diseases such as ureteral calculus and the like because the main body of the hard scope is relatively hard and cannot be bent, and the soft scope gradually becomes an important treatment means for the urinary calculus. Taking ureteroscope as an example, traditional ureteroscope still has not enough in the aspect of image acquisition, calculus are smashed and incomplete stone clearance etc. see the calculus but optic fibre can't aim at in the department of bending in the renal pelvis, perhaps aim back image and block by the renal pelvis inner wall and can't observe the rubble state, or soft camera lens portion has the microchannel again, only can pass through the optic fibre rubble, and can't clear up the incomplete stone extracorporeally high-efficiently, lead to the problem such as operation inefficiency.

In order to solve the above problems, clinical experts have proposed to timely suck the crushed calculi out of the body by using the principle of negative pressure suction. For example, as shown in fig. 1, a self-irrigating drainage type ureteroscope 1P is applied in chinese utility model CN212574841U, which is advantageous in that a camera 10P, an irrigating opening 20P, a fiber channel opening 30P and a suction channel opening 40P are all disposed on the front end face of the ureteroscope, and the suction channel opening 40P is located behind the camera 10P, and an end working image is collected by the camera 10P to observe light rays to hit stones, and then a working cycle is formed by cooperating with water flow to wash the stones and suction, so as to improve stone cleaning efficiency.

However, in the actual test process, due to factors such as the position of the camera, the direction of the optical fiber, the shape of the opening of the suction channel, the arrangement of the perfusion channel and the like, the working state of the crushed stone has a blind area, so that a doctor is difficult to make corresponding correct operation feedback. For example, as shown in fig. 2, since the suction passage port 40P is outside the visual field range of the camera 10P, whether crushed gravels enter the suction passage port 40P or whether the suction passage port 40P is blocked cannot be observed, which brings about a safety risk to the operation.

Disclosure of Invention

One advantage of the present invention is to provide a tip for a ureteroscope and a front view ureteroscope that enable observation of a suction opening of a suction hole, and facilitate timely and accurate determination of a surgical state.

Another advantage of the present invention is to provide a tip for a ureteroscope and an orthographic ureteroscope, wherein, in an embodiment of the present invention, the tip for a ureteroscope enables a suction opening of a suction hole to be within a visual field of a camera so as to observe in real time a phenomenon such as whether crushed stone enters the suction opening of the suction hole or whether the suction opening of the suction hole is blocked.

Another advantage of the present invention is to provide a tip for a ureteroscope and an emmetroscope, wherein, in an embodiment of the present invention, the tip for the ureteroscope is capable of bringing a suction opening of the suction hole within a field of view of the camera head with an optical axis of the camera head parallel to a central axis of the suction hole.

Another advantage of the present invention is to provide a ureteroscope and a ureteroscope of an orthographic view, wherein, in an embodiment of the present invention, the ureteroscope distal end can limit the field angle of the camera by sucking before and after the camera, so as to ensure that the suction opening of the suction hole is within the field of view of the camera without increasing the field angle of the camera.

Another advantage of the present invention is to provide a tip for a ureteroscope and an emmetroscope, wherein, in an embodiment of the present invention, the tip for the ureteroscope enables visualization of an operation state of a tip portion of the ureteroscope through an obliquely designed suction opening, which helps a doctor grasp an operation state.

Another advantage of the present invention is to provide a tip for a ureteroscope and an emmetroscope, wherein, in an embodiment of the present invention, the tip for the ureteroscope enables the suction opening of the suction hole to cover the entire front end surface of the tip portion as much as possible, so as to increase the size of the suction opening and reduce the risk of the suction opening being blocked.

Another advantage of the present invention is to provide a tip for a ureteroscope and an emmetroscope, wherein, in an embodiment of the present invention, an optical axis of the camera in the tip for the ureteroscope is parallel to a central axis of the suction hole to bring the suction opening within a visual field range of the camera through a leading and inclined suction opening, which facilitates observation of a state of the suction opening.

It is another advantage of the present invention to provide a tip and frontal ureteroscope that does not require complex structures or designs in order to achieve the above advantages. Accordingly, the present invention successfully and effectively provides a solution that not only provides a simple tip for ureteroscope and an emmetroscope, but also increases the practicality and reliability of the tip for ureteroscope and the emmetroscope.

To achieve at least one of the above advantages or other advantages and objects, the present invention provides a tip for a ureteroscope adapted to be disposed at a lens body of the ureteroscope, wherein the tip for the ureteroscope includes:

a tip portion which is provided at a tip end of the mirror body and has an image pickup end surface and a suction end surface located in front of the image pickup end surface, wherein the tip portion further includes suction holes penetrating forward and backward to form a suction opening at the suction end surface, and the suction holes of the tip portion are provided to communicate with a suction passage of the mirror body; and

an image pickup device, wherein the image pickup device includes a camera mounted to the camera end face of the tip portion, and an optical axis of the camera is parallel to a central axis of the suction hole so that the suction opening of the suction hole of the tip portion is within a field of view of the camera.

According to an embodiment of the present application, the suction end surface of the tip portion extends obliquely forward from the image pickup end surface.

According to an embodiment of the present application, the suction end surface of the tip portion includes a concave section end surface extending arcuately inward from the image pickup end surface and a convex section end surface extending arcuately outward from the concave section end surface.

According to an embodiment of the present application, the concave section end surface of the attraction end surface is tangent to the image pickup end surface, and the convex section end surface of the attraction end surface is tangent to the concave section end surface of the attraction end surface.

According to an embodiment of the present application, the image capturing device further includes at least one light source, and the camera and the light source are adjacently mounted to the camera end face of the tip portion.

According to an embodiment of the application, the tip portion further comprises a working hole, wherein the working hole is adapted to communicate with a working channel of the mirror body such that a working member mounted to the working channel passes through the working hole to protrude out of the tip portion to be within a field of view of the camera.

According to an embodiment of the present application, a working opening of the working hole of the tip portion faces the suction opening of the suction hole of the tip portion for the working member passed through the working hole to protrude from the suction opening.

According to an embodiment of the present application, the working hole of the tip portion extends forward-obliquely for projecting the working member passing through the working hole forward-obliquely from the suction opening.

According to an embodiment of the present application, the working hole of the tip portion extends from a rear end surface of the tip portion obliquely forward and inward to an inner wall surface of the suction hole to form the working opening at the inner wall surface of the suction hole.

According to an embodiment of the application, the tip part further comprises an irrigation hole, wherein the irrigation hole is adapted to communicate with an irrigation channel of the mirror body for draining irrigation fluid transported via the irrigation channel from the tip part.

According to another aspect of the present application, the present application further provides an emmetroscope comprising:

a mirror body, wherein the mirror body has a suction channel; and

a tip for a ureteroscope, wherein the tip for the ureteroscope is disposed at a scope body of the ureteroscope, and the tip for the ureteroscope includes:

a tip portion which is provided at a tip end of the mirror body and has an imaging end surface and a suction end surface located in front of the imaging end surface, wherein the tip portion further includes suction holes penetrating forward and backward to form a suction opening at the suction end surface, and the suction holes of the tip portion communicate with the suction passage of the mirror body; and

an image pickup device, wherein the image pickup device includes a camera mounted to the camera end face of the tip portion, and an optical axis of the camera is parallel to a central axis of the suction hole so that the suction opening of the suction hole of the tip portion is within a field of view of the camera.

According to an embodiment of the present application, the mirror body includes a mirror tube defining the suction passage, and at least one working member, wherein the working member is mounted to the mirror tube, and the working member mounted to the mirror tube projects forward of the tip portion to perform a corresponding operation.

According to an embodiment of the application, the mirror body further has a working channel for movably mounting the working member, and the tip portion further comprises a working hole, wherein the working hole communicates with the working channel of the mirror body such that the working member protrudes out of the tip portion through the working hole.

According to an embodiment of the application, the working component protruding from the working aperture extends in a meridional image plane of the camera.

According to an embodiment of the application, the mirror body further has an irrigation channel for transporting an irrigation fluid, and the tip part further comprises an irrigation hole, wherein the irrigation hole communicates with the irrigation channel of the mirror body for draining the irrigation fluid transported via the irrigation channel from the tip part.

Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the claims.

Drawings

Fig. 1 shows a partial structural schematic diagram of a prior art self-irrigating drainage-type ureteroscope.

Fig. 2 shows a schematic application state diagram of the self-irrigating drainage type ureteroscope.

Fig. 3 is a schematic view of a state of a front view ureteroscope according to an embodiment of the present invention.

Fig. 4 shows a schematic perspective view of the tip for the ureteroscope according to the above embodiment of the present invention.

Fig. 5 shows a schematic top view of the tip for the ureteroscope according to the above-described embodiment of the present invention.

Fig. 6 shows a schematic cross-sectional view of the tip for the ureteroscope according to the above-described embodiment of the present invention.

Fig. 7 shows a partial cross-sectional schematic view of the scope body of the emmetropic ureteroscope according to the above-described embodiments of the present invention.

Fig. 8 shows a schematic cross-sectional view of the mirror body according to the above-described embodiment of the invention.

Fig. 9 is a schematic view showing an application state of the front-view ureteroscope according to the embodiment of the invention.

Fig. 10 shows a schematic diagram of the lithotripsy operation of the frontal ureteroscope according to the above-described embodiment of the present invention.

Fig. 11 shows another application state diagram of the front-view ureteroscope according to the embodiment of the invention.

Fig. 12 and 13 show a first variant embodiment of the emmetropic ureteroscope according to the above-described example of the invention.

Fig. 14 and 15 show a second variant embodiment of the emmetroscope according to the above example of the invention.

Figures 16 and 17 show a third variant embodiment of the emmetroscope according to the above example of the 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 underlying principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.

In the present invention, the terms "a" and "an" are to be understood as meaning "one or more" in the claims and the description, that is, one element may be present in one embodiment, and another element may be present in plural in number. The terms "a" and "an" should not be construed as limiting the number unless such an element is explicitly recited in the disclosure as only one of the number and the number.

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Summary of the application

As described in the background art, in the actual test process of the existing self-irrigation drainage type ureteroscope, due to factors such as the position of a camera, the direction of optical fibers, the shape of an opening of an aspiration channel, the arrangement of an irrigation channel and the like, a dead zone exists in the working state of crushed stone, so that a doctor cannot make corresponding correct operation feedback. For example, since the suction passage port is outside the field of view of the camera, whether crushed gravels enter the suction passage port or whether the suction passage port is blocked cannot be observed, which brings about a safety risk to the operation.

Specifically, the technical idea of the application is to creatively design the front end of the ureteroscope under the condition of fully considering the characteristics of the lithotripsy operation and the practical application scene of the ureteroscope, so that the working state of a suction port, such as whether the lithotripsy enters the suction port or not or whether the suction port is blocked or not, can be observed in real time while the minimally invasive treatment operation requirement is met, and a doctor can be helped to make an accurate judgment on the operation state in time.

In view of this, the present application provides an emmetropic ureteroscope including a scope body and a tip for a ureteroscope, wherein the scope body has a suction channel for discharging water or crushed stone, and the tip for the ureteroscope includes a tip portion and an image pickup device, wherein the tip portion is provided at a front end of the scope body, and the tip portion has an image pickup end surface and a suction end surface located in front of the image pickup end surface, wherein the tip portion further includes suction holes penetrating forward and backward to form a suction opening at the suction end surface, and the suction holes of the tip portion communicate with the suction channel of the scope body; wherein the image pickup device includes a camera mounted to the camera end face of the tip portion, and an optical axis of the camera is parallel to a central axis of the suction hole so that the suction opening of the suction hole of the tip portion is within a field of view of the camera.

In view of this, the present application provides a tip for a ureteroscope adapted to be disposed on a lens body of the ureteroscope, wherein the tip for the ureteroscope includes: a tip portion which is provided at a tip end of the mirror body and has an image pickup end surface and a suction end surface located in front of the image pickup end surface, wherein the tip portion further includes suction holes penetrating forward and backward to form a suction opening at the suction end surface, and the suction holes of the tip portion are provided to communicate with a suction passage of the mirror body; and an image pickup device, wherein the image pickup device includes a camera mounted to the camera end face of the tip portion, and an optical axis of the camera is parallel to a central axis of the suction hole, so that the suction opening of the suction hole of the tip portion is within a field of view of the camera.

Illustrative embodiments

Referring to fig. 3 to 10 of the drawings accompanying the present specification, an embodiment of the present invention provides an orthographic ureteroscope 1 which can be applied to treat diseases such as urinary calculus, and it will be understood by those skilled in the art that, for convenience of description, the orthographic ureteroscope 1 is defined as a front direction into the body and a rear direction out of the body.

Specifically, as shown in fig. 3 to 6, the front-view ureteroscope 1 may include a mirror body 10 and a tip 20 for a ureteroscope. The lens body 10 has a suction channel 101 for discharging water or crushed stone, and the ureter lens tip 20 is adapted to be disposed to the lens body 10. The tip 20 for the ureteroscope may include a tip portion 21 and an image pickup device 22, wherein the tip portion 21 is provided at the tip of the scope body 10, and the tip portion 21 has an image pickup end surface 2101 and a suction end surface 2102 which is located in front of the image pickup end surface 2101, wherein the tip portion 21 further includes a suction hole 211 which penetrates forward and backward to form a suction opening 2110 in the suction end surface 2102, and the suction hole 211 of the tip portion 21 communicates with the suction passage 101 of the scope body 10; wherein the image pickup device 22 includes a camera 221 attached to the image pickup end surface 2101 of the tip portion 21, and an optical axis 2211 of the camera 221 is parallel to a center axis 2111 of the suction hole 211 so that a suction opening 2110 of the suction hole 211 of the tip portion 21 is within a field of view of the camera 221. It is understood that the image pickup end surface 2101 and the suction end surface 2102 together form a front end surface of the tip end portion 21, and the suction hole 211 penetratingly extends from a rear end surface of the tip end portion 21 to the front end surface of the tip end portion 21.

It is to be noted that since the optical axis 2211 of the camera 221 is parallel to the central axis 2111 of the suction hole 211, that is, the shooting direction of the camera 221 is the same as the axial direction of the suction hole 211, the camera 221 can shoot the suction opening 2110 of the suction hole 211 partially at the same time as shooting the state directly in front of the tip portion 21. Meanwhile, the radial space occupied by the camera 221 is made smaller, so that the radial dimension of the tip portion 21 of the ureteroscope tip 20 is reduced, the radial dimension of the ureteroscope tip 20 is reduced without reducing the inner diameter of the suction hole 211, and the practicability of the ureteroscope is improved.

In addition, since the camera 221 and the suction opening 2110 of the suction hole 211 in the ureteroscope tip 20 are respectively located at the image pickup end face 2101 and the suction end face 2102 of the tip 21, and the suction end face 2102 is located in front of the image pickup end face 2101, as shown in fig. 6 and 9, the suction opening 2110 of the suction hole 211 is located in front of the camera 221, so as to achieve the technical effects of sucking before and taking images after, so as to ensure that the suction opening 2110 of the suction hole 211 is partially or completely located in the field of view of the camera 221, thereby observing the working state of the suction opening 2110 in real time, such as whether crushed stone enters the suction opening 2110, whether the suction opening 2110 is blocked, and the like, and helping a doctor make an accurate judgment on the surgical state in time.

More specifically, as shown in fig. 4 and 6, the suction end surface 2102 of the tip portion 21 extends obliquely forward from the image pickup end surface 2101 of the tip portion 21 such that the camera 221 mounted on the image pickup end surface 2101 is rearward and the suction opening 2110 formed in the suction end surface 2102 is forward, and the suction opening 2110 is chamfered so as to ensure that the suction opening 2110 is partially or entirely within the field of view of the camera 221. It is to be understood that, in the above example of the present application, the attracting end surface 2102 of the tip end portion 21 is implemented as a chamfered surface. Of course, in other examples of the present application, the suction end surface 2102 of the tip portion 21 may be implemented as a plane section, in which case the camera end surface 2101 of the tip portion 21 may be located at the notch of the suction end surface 2102 or in the suction hole 211, so that the camera 221 can still acquire the image of the suction opening 2110.

Preferably, the suction end surface 2102 of the tip end portion 21 includes a recessed section end surface 21021 extending inward in an arc shape from the camera end surface 2101 to help ensure that the suction opening 2110 on the suction end surface 2102 falls within the field of view of the camera 221 while avoiding the recessed section end surface 21021 from obstructing the field of view of the camera end surface 2101. At the same time, the size of the suction opening 2110 of the tip portion 21 can be rapidly enlarged on the depressed section end face 21021 to the maximum inner diameter of the suction passage 101, which helps to avoid clogging of the suction opening 2110 with large crushed stones.

More preferably, the suction end surface 2102 of the tip portion 21 further includes a convex section end surface 21022 arcuately extending outward from the concave section end surface 21021, so that the tip portion 21 has a blunt body structure, and the tip portion 21 is prevented from forming a sharp head, which helps prevent the tip portion 21 from injuring human organs.

Most preferably, the convex section end face 21022 of the suction end face 2102 is tangent to the concave section end face 21021 of the suction end face 2102, and the concave section end face 21021 of the suction end face 2102 is tangent to the image pickup end face 2101, so that the concave section end face 21021 of the suction end face 2102 smoothly extends from the image pickup end face 2101 to the convex section end face 21022, so as to ensure that the tip end portion 21 has a smooth end face, further avoiding the tip end portion 21 from damaging human organs.

It should be noted that, since the ureteroscope tip 20 is inserted into the human body when the front-view ureteroscope 1 is used for the medical operation, that is, the ureteroscope tip 20 is in a dark environment, as shown in fig. 4 and 5, the image collecting device 22 further generally needs to include at least one light source 222 for emitting light to irradiate an object to be photographed, such as a renal pelvis lumen or a suction opening 2110, and the camera 221 is used for receiving the light reflected by the object to be photographed to capture an image of the object to be photographed, so that the captured image data is transmitted to the outside of the body to be displayed in a display, which is convenient for a doctor or the like to observe the inside of the body.

Exemplarily, as shown in fig. 4 and 5, the camera 221 and the light source 222 are both mounted on the camera end face 2101 of the tip portion 21, and the light source 222 is located near the camera 221, that is, the camera 221 and the light source 222 are mounted adjacent to the camera end face 2101 of the tip portion 21, which helps to ensure that the light emitted by the light source 222 can be better received by the camera 221 to obtain image information after being reflected by the object to be photographed.

In detail, the light source 222 may be, but not limited to, implemented as an LED or a cold light source, the number of the light sources 222 may be one or more than one, and the light sources 222 may be located on a single side or two sides of the camera 221, and may be configured according to needs and spaces, which is not described herein again. It is understood that the camera 221 may be implemented as, but not limited to, a camera module consisting of a lens group and a CMOS image sensor, and may also be implemented as other types of camera modules as long as image information can be acquired.

Alternatively, the angle of view of the camera 221 may be implemented as, but not limited to, 120 °, and according to the above arrangement of the present application, the front-view ureteroscope 1 of the present application can visualize the ureteroscope tip 20 without increasing the angle of view of the camera 221, facilitating observation of whether the suction opening 2110 of the tip portion 21 is clogged, or whether crushed stone enters the suction opening 2110. Of course, in other examples of the present application, the angle of view of the camera 221 may be implemented at other angles.

According to the above-described embodiment of the present application, as shown in fig. 6 and 9, the meridional image plane 2212 of the camera 221 penetrates through the suction opening 2110 of the tip portion 21, so that in a picture taken through the camera 221 displayed by a display, the visual central axis 2210 of the camera 221 will penetrate through the image of the suction opening 2110, facilitating observation and determination of the state and position of the suction opening 2110.

It should be noted that in the front view ureteroscope 1 of the present application, the image capturing end surface 2101 and the suction end surface 2102 of the distal end portion 21 are arranged oppositely, that is, the relative position between the image capturing end surface 2101 and the suction end surface 2102 may be divided into an upper portion and a lower portion, for example, as shown in fig. 9 and 10, the image capturing device 22 may be arranged above the suction end surface 2102, that is, the suction end surface 2102 may extend forward and downward from the image capturing end surface 2101, such that the suction opening 2110 is arranged below the display screen. Of course, in another example of the present application, as shown in fig. 11, the image pickup end surface 2101 may be located below the suction end surface 2102, that is, the suction end surface 2102 extends forward and upward from the image pickup end surface 2101 in an inclined manner, so that the image capturing device 22 is placed downward and the suction opening 2110 is placed upward, and at this time, the image of the suction opening 2110 is located at an upper portion of the display screen. It is understood that the references to up, down, left, and right in the present application are defined according to the image capturing device 22 being placed, i.e., the references to up, down, left, and right in the present application correspond to up, down, left, and right, respectively, of the image capturing device 22 when placed.

Further, since it is generally necessary to perform an operation of crushing stones or the like through the face-up ureteroscope 1 and then to perform stone removal through the suction passage 101 in the face-up ureteroscope 1 in addition to observing the position and state of stones in the body through the face-up ureteroscope 1 when performing a stone crushing operation using the face-up ureteroscope 1 of the present application, according to the above-described embodiment of the present application, as shown in fig. 3 to 6, the scope body 10 of the face-up ureteroscope 1 may include a scope tube 11 defining the suction passage 101 and at least one working member 12, the working member 12 may be attached to the scope tube 11, and the working member 12 attached to the scope tube 11 may be capable of being extended forward out of the tip portion 21 to perform a corresponding operation.

For example, as shown in fig. 6 and 8, the working member 12 may be, but is not limited to being, implemented as an optical fiber 121 so as to emit laser light through the optical fiber 121 for lithotripsy operation. Of course, in other examples of the present application, the working part 12 may also be, but is not limited to being, implemented as a guide wire, wherein the guide wire may guide the mirror body 10 into a target position. As can be understood by those skilled in the art, the type of the working component 12 can be different according to different application scenarios of the front-view ureteroscope 1, and the operator can select the type according to needs.

Specifically, as shown in fig. 6 and 8, the scope body 10 further has a working channel 102 to which the working member 12 is attached, and the tip portion 21 of the ureteroscope tip 20 further includes a working hole 212 communicating with the working channel 102, wherein the working member 12 attached to the working channel 102 can pass through the working hole 212 to protrude out of the tip portion 21 to be within the visual field range of the camera 221. It is understood that when the working member 12 is implemented as a guide wire to guide the endoscope body 10 to be inserted into a human organ, the guide wire may first pass through the suction hole 211 and then pass through the suction channel 101 to guide the endoscope body 10 to a target position, and then the guide wire may be withdrawn to keep the suction hole 211 and the suction channel 101 unobstructed.

More specifically, as shown in fig. 6 and 9, the working opening 2120 of the working hole 212 of the tip portion 21 faces the suction opening 2110 of the suction hole 211 of the tip portion 21 so that the optical fiber 121 passing through the working hole 212 can protrude from the suction opening 2110 of the tip portion 21, which helps to ensure that the protruding portion of the optical fiber 121 can be within the field of view of the camera 221, facilitating observation of the position and state of the protruding portion of the optical fiber 121.

In particular, the optical fiber 121 may be movably installed at the working channel 102 to enable the optical fiber 121 to be extended or retracted from the suction opening 2110 of the suction hole 211 by drawing the optical fiber 121. Thus, when the optical fiber 121 is operated to protrude from the suction opening 2110 of the suction hole 211, the laser light emitted via the optical fiber 121 can strike stones in the human organ to perform a lithotripsy operation; when the optical fiber 121 is operated to retract the suction opening 2110 of the suction hole 211, the laser emitted through the optical fiber 121 is released in the suction hole 211, and at this time, if broken stone blockage occurs in the suction hole 211, the released holmium laser hits the blocked broken stone to achieve the effect of dredging the suction hole 211.

Preferably, as shown in fig. 6, the working hole 212 of the tip portion 21 extends forward, so that the optical fiber 121 passing through the working hole 212 can protrude forward from the suction opening 2110 of the tip portion 21. It can be understood that, since the optical fiber 121 can be obliquely extended to the suction opening 2110 of the suction hole 211, when the suction opening 2110 of the suction hole 211 is clogged by debris, the laser emitted through the optical fiber 121 can better hit the debris clogging the suction opening 2110 to dredge the suction opening 2110, which helps to improve the self-dredging efficiency.

More preferably, the working hole 212 of the tip portion 21 extends obliquely toward the central region of the suction opening 2110 of the tip portion 21 so that the optical fiber 121 passed through the working hole 212 can protrude from the central region of the suction opening 2110.

Most preferably, as shown in fig. 6 and 9, the working component 12 (e.g., the optical fiber 121) extending from the suction opening 2110 extends in the meridional image plane 2211 of the camera 221 such that the image of the optical fiber 121 extends substantially along the visual central axis 2210 of the camera 221, that is, the center line of the image of the optical fiber 121 substantially coincides with the visual central axis 2210 of the camera 221, so that there is no tissue obstruction at locations such as a renal pelvis lumen turn, and not only stones can be observed, but also the hit positions of the optical fiber 121 can be seen.

Exemplarily, in the above-described embodiment of the present application, as shown in fig. 4 and 6, the working hole 212 of the tip portion 21 may extend obliquely downward from above, so that the optical fiber 121 passing through the working hole 212 protrudes obliquely downward from the upper side of the suction hole 211 out of the suction opening 2110; alternatively, in the first modified embodiment of the present application, as shown in fig. 12 and 13, the working hole 212 of the tip portion 21 may extend obliquely from bottom to top so that the optical fiber 121 passed through the working hole 212 protrudes obliquely upward from the lower side of the suction hole 211 out of the suction opening 2110; still alternatively, in the second modified embodiment of the present application, as shown in fig. 14 and 15, the working hole 212 of the tip portion 21 may extend obliquely from left to right so that the optical fiber 121 passing through the working hole 212 protrudes obliquely from left to right of the suction opening 2110. In a third modified embodiment of the present invention, as shown in fig. 16 and 17, the working hole 212 of the distal end portion 21 may extend obliquely from right to left so that the optical fiber 121 passed through the working hole 212 protrudes obliquely from right to left from the suction opening 2110 of the suction hole 211.

It is noted that, as shown in fig. 6, 13, 15 and 17, the working hole 212 of the tip portion 21 extends obliquely forward and inward from the rear end surface of the tip portion 21 to the inner wall surface of the suction hole 211 to form the working opening 2120 on the inner wall surface of the suction hole 211, that is, the working hole 212 is implemented as an oblique hole with respect to the suction hole 211 so that the optical fiber 121 passing through the working hole 212 can protrude from the inner wall of the suction hole 211 to avoid the optical fiber 121 obstructing entry of crushed stone or fluid into the suction channel 101 through the suction hole 211 to be discharged.

Further, according to the above-described embodiment of the present application, as shown in fig. 6 and 8, the suction channel 101 and the working channel 102 in the mirror body 10 may be independent from each other, that is, the suction channel 101 and the working channel 102 extend between the front end and the rear end of the mirror body 10, respectively. It is understood that, since the suction channel 101 and the working channel 102 are independent from each other, the working member 12 (e.g., the optical fiber 121) installed in the working channel 102 does not enter the suction channel 101, so as to prevent the working member 12 from interfering with the movement of fluid or debris in the suction channel 101 and prevent the suction channel 101 from being jammed.

It should be noted that, in another example of the present application, as shown in fig. 13, 15 and 17, the suction channel 101 and the working channel 102 in the mirror body 10 may be communicated with each other, that is, the suction channel 101 and the working channel 102 may be implemented as the same channel, but since the working hole 212 extends obliquely from the side wall of the suction hole 211 of the tip portion 21 from the outside to the inside, the optical fiber 121 passing through the working hole 212 extends along the inner wall of the suction channel 101, that is, the optical fiber 121 extends along the inner wall of the suction channel 101, and then obliquely passes through the suction opening 2110 of the suction hole 211 through the working hole 212, so that the optical fiber 121 still can prevent interference with the movement of fluid or crushed stone in the suction channel 101 to some extent, thereby preventing the suction channel 101 from being jammed. It can be understood that when the suction channel 101 and the working channel 102 of the mirror body 10 are the same channel, the structure of the mirror body 10 will be simplified to the maximum extent, which helps to reduce the manufacturing difficulty and cost of the mirror body 10; meanwhile, once the inside of the suction channel 101 of the mirror body 10 is clogged with debris, the optical fiber 121 may be pulled so that the end portion of the optical fiber 121 is at the clogged debris inside the suction channel 101, so that the clogged debris is hit by the laser light emitted from the optical fiber 121 to dredge the suction channel 101.

According to the above-described embodiment of the present application, as shown in fig. 4 and 7, the mirror body 10 of the front-view ureteroscope 1 may further include a perfusion channel 103 for transferring a perfusion fluid (such as water, etc.), and the tip portion 21 of the ureteroscope tip 20 further includes a perfusion hole 213 communicating with the perfusion channel 103 for discharging the perfusion fluid transferred via the perfusion channel 103 from the tip portion 21 to be perfused into a human organ. Thus, when the emmetroscope 1 is operated, after the emmetroscope 1 is inserted into the kidney, a perfusion fluid such as water flows to the perfusion hole 213 of the tip portion 21 through the perfusion channel 103, and then enters the kidney through the perfusion hole 213 to perform a perfusion operation; a working member 12 such as an optical fiber 121 extends from the working channel 102 to the working hole 212 to protrude through the suction opening 2110 of the suction hole 211 for lithotripsy; at the same time, the excess perfusate and crushed stones may flow from the suction holes 211 to the suction channel 101 to be discharged outside the body.

Preferably, as shown in fig. 7 and 10, the perfusion hole 213 of the tip portion 21 extends from the rear end surface of the tip portion 21 to the peripheral side surface 2103 of the tip portion 21 to form one or more perfusion openings 2130 on the peripheral side surface 2103 of the tip portion 21, so that perfusion fluid flows outwards from the peripheral side surface 2103 of the tip portion 21 through the perfusion openings 2130 of the perfusion hole 213, so as to form a controllable and orderly fluid circulation in front of the tip portion 21, which helps to omnidirectionally drive the crushed stone to the suction opening 2110 for efficient suction. It can be understood that, according to the law of conservation of momentum and the principle of negative pressure suction in hydrodynamics, the kinetic energy of the perfusion fluid in the process of high-speed flow is used to push the heavy-mass fragmented calculus (crushed stone) deposited at the bottom of the renal pelvis to displace, and the direction of the calculus is changed after the calculus meets the obstruction of the inner cavity surface of the renal pelvis, so that the calculus moves upwards along the inner wall of the renal pelvis, when the calculus reaches the front of the suction opening 2110, the pressure near the suction opening 2110 is low, and the perfusion fluid is forced to flow to the suction opening 2110, so that the crushed stone is driven to enter the suction opening 211 until the crushed stone is removed from the body. In the process, continuous liquid filling and suction are performed, so that a continuous circular motion track (vortex) which is approximately semi-circle can be formed by the filling liquid between the filling opening 2130 and the suction opening 2110, the diameter or the motion track of the semi-circle can be controlled by adjusting the flow and the suction force, targeted controllable suction of the broken stones is realized, and the stone cleaning efficiency is greatly improved.

Furthermore, since the area of the outer peripheral side surface 2103 of the tip portion 21 is large, the number and size of the perfusion openings 2130 of the perfusion holes 213 are not necessarily limited by the end surface with a small area on the tip portion 21, so that the effective area of the perfusion openings 2130 of the perfusion holes 213 is greatly increased, which facilitates the formation of a large perfusion flow rate at a relatively low perfusion pressure and the formation of a large suction flow rate in the suction hole 211 at the same negative pressure, thereby achieving an optimal perfusion-suction ratio and enhancing the stone discharge efficiency.

More preferably, as shown in fig. 7 and 8, the perfusion channel 103 of the mirror body 10 has a deformed structure, and the perfusion channel 103 is wrapped around the suction channel 101 so as to increase the effective diameter of the perfusion channel 103 without increasing the outer diameter of the mirror tube 11 of the mirror body 10, contributing to an increase in perfusion flow rate. Illustratively, the irrigation channel 103 of the mirror body 10 may have a ring-shaped cross-sectional structure such that the irrigation channel 103 surrounds the suction channel 101. It is understood that the ring shape in the ring-shaped cross-sectional structure may refer to a complete ring, i.e. the suction channel 101 is completely surrounded by the irrigation channel 103; of course, the ring shape in the ring-shaped cross-sectional structure may also be referred to as a broken ring, i.e. the suction channel 10 is partially surrounded by the perfusion channel 103.

Alternatively, as shown in fig. 8, the perfusion channel 103 and the working channel 102 of the mirror body 10 jointly surround the suction channel 101, so as to maximize the inner diameter of the suction channel 101 and reduce the risk of the suction channel 101 being clogged with debris without increasing the outer diameter of the mirror tube 11 of the mirror body 10. In other words, the suction channel 101 of the mirror body 10 may have a circular cross section or an elliptical cross section, and the irrigation channel 103 of the mirror body 10 may have a cutaway annular cross section to partially wrap around the suction channel 101 and form a cutaway around the suction channel 101 in which the working channel 102 is arranged, so that the irrigation channel 103 and the working channel 102 together enclose the suction channel 101.

It is noted that in the above-described examples of the present application, as shown in fig. 7 and 8, the working channel 102 and the perfusion channel 103 of the mirror body 10 may be independent from each other; of course, in other examples of the present application, the working channel 102 and the perfusion channel 103 of the scope body 10 may also be communicated with each other, that is, the working channel 102 and the perfusion channel 103 of the scope body 10 are communicated with each other to form a complete annular channel around the suction channel 101, which helps to simplify the structure of the scope body 10 and reduce the manufacturing cost of the front-view ureteroscope 1.

According to the above-described embodiment of the present application, as shown in fig. 3, the mirror body 10 of the face-up ureteroscope 1 may further include an operating part 12 provided at the rear end of the mirror tube 11, and the mirror tube 11 may include an insertion part 111 extending forward from the operating part 12 and a bendable part 112 extending forward from the insertion part 111, wherein the ureteroscope tip 20 is provided to the bendable part 112 of the mirror tube 11, and the bendable part 112 of the mirror tube 11 can be operated by the operating part 12 to be bent or straightened so that the ureteroscope tip 20 approaches a target position, such as a stone position or the like within a renal pelvis.

Further, as shown in fig. 3, the operating portion 12 of the mirror body 10 may include a suction port 1201 communicating with the suction channel 101, a working port 1202 communicating with the working channel 102, and a perfusion port 1203 communicating with the perfusion channel 103, wherein the suction port 1201 of the operating portion 12 is adapted to connect a suction device to suck water and crushed stone to move from the suction channel 101 to be discharged therethrough; wherein the working interface 1202 is configured to interleave the working component 12 such that the working component 12 is threaded into the working channel 102 via the working interface 1202; the perfusion interface 1203 is adapted to be connected to a perfusion device, so as to inject perfusion fluid into the perfusion channel 103 through the perfusion device.

In particular, as shown in fig. 3, the operating portion 12 of the mirror body 10 may further include an information interface 1204 communicably connected to the image capturing apparatus 22, wherein the information interface 1204 is adapted to connect a terminal device such as a display screen to communicatively connect the image capturing apparatus 22 and the terminal device, i.e., information captured via the image capturing apparatus 22 can be processed or displayed by the terminal device.

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

Claims (15)

1. A tip for a ureteroscope adapted to be arranged at a mirror body of the ureteroscope, wherein the tip for the ureteroscope includes:

a tip portion which is provided at a tip end of the mirror body and has an image pickup end surface and a suction end surface located in front of the image pickup end surface, wherein the tip portion further includes suction holes penetrating forward and backward to form a suction opening at the suction end surface, and the suction holes of the tip portion are provided to communicate with a suction passage of the mirror body; and

an image pickup device, wherein the image pickup device includes a camera mounted to the camera end face of the tip portion, and an optical axis of the camera is parallel to a central axis of the suction hole so that the suction opening of the suction hole of the tip portion is within a field of view of the camera.

2. The tip for a ureteroscope according to claim 1, wherein the suction end surface of the tip portion extends obliquely forward from the imaging end surface.

3. The ureteroscope tip of claim 2, wherein the suction end surface of the tip portion comprises a concave section end surface extending arcuately inward from the image pick-up end surface and a convex section end surface extending arcuately outward from the concave section end surface.

4. The ureteroscope tip of claim 3, wherein the concave section end surface of the suction end surface is tangent to the imaging end surface, and the convex section end surface of the suction end surface is tangent to the concave section end surface of the suction end surface.

5. The ureteroscope tip according to any one of claims 1-4, wherein the image capture device further comprises at least one light source, and the camera and the light source are mounted adjacent to the camera end face of the tip.

6. The ureteroscope tip of any of claims 1 to 4, wherein the tip section further comprises a working hole, wherein the working hole is adapted to communicate with the working channel of the scope body, such that a working component mounted to the working channel passes through the working hole to protrude out of the tip section to be within the field of view of the camera.

7. The ureteroscope tip according to claim 6, wherein a working opening of the working hole of the tip portion faces the suction opening of the suction hole of the tip portion, for the working member passed through the working hole to protrude from the suction opening.

8. The tip for a ureteroscope according to claim 7, wherein the working hole of the tip portion extends obliquely forward for the working member passed through the working hole to protrude obliquely forward from the suction opening.

9. The tip for the ureteroscope according to claim 8, wherein the working hole of the tip portion extends from a rear end surface of the tip portion obliquely forward and inward to an inner wall surface of the suction hole to form the working opening at the inner wall surface of the suction hole.

10. The ureteroscope tip of any of claims 1-4, wherein the tip further comprises an irrigation hole, wherein the irrigation hole is configured to communicate with an irrigation channel of the scope body to drain irrigation fluid conveyed via the irrigation channel from the tip.

11. Orthographic ureteroscope, its characterized in that includes:

a mirror body, wherein the mirror body has a suction channel; and

a tip for a ureteroscope, wherein the tip for the ureteroscope is disposed at a scope body of the ureteroscope, and the tip for the ureteroscope includes:

a tip portion which is provided at a tip end of the mirror body and has an imaging end surface and a suction end surface located in front of the imaging end surface, wherein the tip portion further includes suction holes penetrating forward and backward to form a suction opening at the suction end surface, and the suction holes of the tip portion communicate with the suction passage of the mirror body; and

an image pickup device, wherein the image pickup device includes a camera mounted to the camera end face of the tip portion, and an optical axis of the camera is parallel to a central axis of the suction hole so that the suction opening of the suction hole of the tip portion is within a field of view of the camera.

12. The emmetropic ureteroscope of claim 11, wherein the scope body comprises a scope tube defining the suction channel and at least one working member, wherein the working member is mounted to the scope tube, and the working member mounted to the scope tube is protruded forward of the tip portion to perform a corresponding operation.

13. The emmetropic ureteroscope of claim 12, wherein the scope body further comprises a working channel for removably mounting the working member, and the tip portion further comprises a working aperture, wherein the working aperture is in communication with the working channel of the scope body such that the working member extends out of the tip portion through the working aperture.

14. The emmetroscope of claim 13, wherein the working member extending from the working aperture extends within a meridional image plane of the camera.

15. The emmetroscope according to any one of claims 11-14, wherein the scope body further has a perfusion channel for delivering a perfusion fluid, and the tip portion further comprises a perfusion hole, wherein the perfusion hole communicates with the perfusion channel of the scope body to discharge the perfusion fluid delivered through the perfusion channel from the tip portion.

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