WO2023045773A1

WO2023045773A1 - Tip for ureteroscope and intraoperative ureteroscope

Info

Publication number: WO2023045773A1
Application number: PCT/CN2022/117845
Authority: WO
Inventors: 单剑; 程跃; 陈卿业; 吴海良; 方立; 黄俊俊; 谢国海
Original assignee: 宁波新跃医疗科技股份有限公司; 宁波市第一医院
Priority date: 2021-09-22
Filing date: 2022-09-08
Publication date: 2023-03-30
Also published as: CN115919243A

Abstract

A ureteroscope tip (20), comprising: a tip portion (21), the tip portion (21) being configured to be arranged at a front end of a ureteroscope body (10), and the tip portion (21) comprising an operating hole (212) for guiding an operating component (12) of the ureteroscope body (10) to pass therethrough, the operating hole (212) obliquely extending forwards and configured such that the operating component (12), which passes out via the operating hole (212), obliquely extends forwards relative to a central axis of a ureteroscope tube (11); and an image capture device (22), the image capture device (22) comprising a camera (221), which is mounted on the tip portion (21), such that a head portion of the operating component (12), which passes out via an aspiration hole (211), is within the field of view of the camera (221). The present invention further relates to a ureteroscope (1) comprising the ureteroscope tip (20).

Description

Ureteroscope tip and intraoperative ureteroscope

technical field

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

Background technique

Urinary calculus is a common disease. According to statistics, the prevalence of urolithiasis in adults is as high as 6.5%, and its 5-year recurrence rate is as high as 50%, and it is increasing year by year, seriously threatening people's health. In recent years, with the development of minimally invasive treatment techniques, ureteroscopy has become an important treatment for such diseases. Existing ureteroscopes for urinary stone extraction mainly include rigid mirrors and soft mirrors. Rigid mirrors are only suitable for diagnosis and treatment of ureteral calculi and other diseases because of their relatively hard and non-bendable bodies. Instead, soft mirrors have gradually become An important treatment for urinary stones. Taking the ureteroscope as an example, the traditional flexible ureteroscope still has deficiencies in image acquisition, calculus crushing, and residual stone removal. For example, the calculus can be seen at the turning of the renal pelvis but the optical fiber cannot be aimed at, or the image is blocked by the inner wall of the renal pelvis after aiming. Observing the state of lithotripsy, or there is only a small channel in the head of the soft lens, which can only pass through the optical fiber to crush the stone, but cannot efficiently remove the residual stone from the body, resulting in low surgical efficiency and other problems.

In order to solve the above problems, clinical experts have proposed to use the principle of negative pressure suction to attract the pulverized stones to the outside of the body in time. For example, as shown in Figure 1, a self-irrigation-drainage ureteroscope 1P has been applied for in the Chinese utility model patent CN212574841U, and its advantage is that the camera 10P, the perfusion port 20P, the fiber channel port 30P located at the rear of the camera 10P and the The suction channel opening 40P is all set on the front end of the ureteroscope, and the optical fiber 50P can extend from the optical fiber channel opening 30P to emit laser light to strike the stone, collect working images through the camera 10P to observe the impact of the optical fiber 50P on the stone, and then It cooperates with the water flow to wash the gravel and attract it to form a working cycle to improve the efficiency of stone removal.

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 suction channel opening, and the arrangement of the perfusion channel, there are blind spots in the working state of the lithotripsy, making it difficult for doctors to give corresponding correct operation feedback. For example, as shown in Figure 2, since the optical axis 100P of the camera 10P is parallel to the central axis 300P of the fiber channel port 30P, and the camera 10P is located on the side of the fiber channel port 30P, it extends from the fiber channel port 30P The optical fiber 50P that exits is parallel to the optical axis 100P of the camera 10P, and the optical fiber 50P protruding from the fiber channel port 30P will extend straight ahead from the ureteroscope, so that no matter how the ureteroscope is rotated, the optical fiber 50P The head can only touch the front of the ureteroscope, and only by moving the ureteroscope laterally can the head of the optical fiber 50P touch the stone hidden in the side of the renal pelvis, but the side wall of the renal pelvis will hinder the camera 10P The field of view makes the camera 10P unable to photograph the stone and the head of the optical fiber 50P, and thus cannot provide image feedback to the doctor.

technical problem

technical solution

An advantage of the present invention is to provide a tip for a ureteroscope and a ureteroscope for intraoperative use, which can observe the head of the optical fiber and help to provide timely image feedback to doctors.

Another advantage of the present invention is to provide a surgical ureteroscope tip and an intraoperative ureteroscope, wherein, in one embodiment of the present invention, the ureteroscope tip can be obliquely extended forward through the inclined working hole to guide the optical fiber In order to change the position of the head of the optical fiber only by rotating the ureteroscope, it is convenient to observe the head of the optical fiber when the stone is struck.

Another advantage of the present invention is to provide a surgical ureteroscope tip and an intraoperative ureteroscope, wherein, in an embodiment of the present invention, the optical axis of the camera in the ureteroscope tip and the center of the working hole The axes are non-parallel to allow a clear view of the head of the optical fiber protruding from the working bore.

Another advantage of the present invention is to provide a surgical ureteroscope tip and an intraoperative ureteroscope, wherein, in one embodiment of the present invention, the central axis of the working hole in the ureteroscope tip is at the center of the camera Meridian image plane, so that the image of the optical fiber passing through the working hole coincides with the visual central axis of the camera, and the image of the optical fiber is in the lower part of the image captured by the camera, so as to conform to human observation habits .

Another advantage of the present invention is to provide the tip for surgical ureteroscope and ureteroscope for intraoperative use, wherein, in one embodiment of the present invention, the tip for ureteroscope can make the suction opening of the suction hole in the view of the image acquisition device. Within the scope of the field, in order to observe phenomena such as whether the crushed gravel enters the suction opening of the suction hole or whether the suction opening of the suction hole is blocked in real time.

Another advantage of the present invention is to provide a surgical ureteroscope tip and an intraoperative ureteroscope, wherein, in an embodiment of the present invention, the meridian image plane of the camera in the ureteroscope tip passes through the suction The suction opening of the hole is such that the central visual axis of the camera passes through the suction opening, so as to facilitate observation of the state of the suction opening.

Another advantage of the present invention is to provide a ureteroscope tip and an intraoperative ureteroscope, wherein, in one embodiment of the present invention, the ureteroscope tip can get rid of the image by attracting first and taking pictures later. The limitation of the field of view of the acquisition device is to ensure that the suction opening of the suction hole is within the field of view of the image acquisition device without increasing the field of view of the image acquisition device.

Another advantage of the present invention is to provide a tip for a ureteroscope and an intraoperative ureteroscope, wherein, in an embodiment of the present invention, the tip for a ureteroscope can pass through an inclined suction opening, so that the tip of the ureteroscope The visualization of the working status helps doctors to grasp the operation status.

Another advantage of the present invention is to provide a tip for a ureteroscope and an intraoperative ureteroscope, wherein, in an embodiment of the present invention, the tip for a ureteroscope can make the suction opening of the suction hole cover the entire tip portion as much as possible. Front face in order 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 ureteroscope tip and an intraoperative ureteroscope, wherein, in order to achieve the above-mentioned advantages, no complicated structures or designs need to be employed in the present invention. Therefore, the present invention successfully and effectively provides a solution that not only provides a simple ureteroscope tip and intraoperative ureteroscope, but also increases the practicality and effectiveness of said ureteroscope tip and intraoperative ureteroscope. reliability.

In order to achieve at least one of the above advantages or other advantages and objectives, the present invention provides a tip for a ureteroscope, which is suitable for being configured on a mirror body of a ureteroscope, wherein the tip for a ureteroscope includes:

The tip portion, wherein the tip portion is used to be arranged on the front end of the mirror tube of the mirror body, and the tip portion includes a working hole for guiding the working parts of the mirror body to pass through, wherein the working hole extending obliquely forward for protruding obliquely forward with respect to the central axis of the mirror tube; and

An image acquisition device, wherein the image acquisition device includes a camera installed on the tip, so that the head of the working component passing through the suction hole is within the field of view of the camera.

According to an embodiment of the present application, the central axis of the working hole at the tip portion is not parallel to the optical axis of the camera.

According to an embodiment of the present application, the central axis of the working hole is within the meridional image plane of the camera.

According to an embodiment of the present application, the working hole at the tip part is used to communicate with the working channel of the mirror body, so that the working part mounted on the working channel protrudes obliquely forward through the working hole the tip.

According to an embodiment of the present application, the tip portion has an imaging end surface and a suction end surface located in front of the imaging end surface, and the tip portion further includes a suction hole for communicating with the suction channel of the mirror body, wherein the suction A hole extends forward from a rear end surface of the tip portion to form a suction opening on the suction end surface, and the camera is mounted on the imaging end surface of the tip portion.

According to an embodiment of the present application, the working opening of the working hole of the tip portion faces the suction opening of the suction hole of the tip portion.

According to an embodiment of the present application, the working hole of the tip part extends forwardly and inwardly from the rear end surface of the tip part to the inner wall surface of the suction hole, so that The inner wall surface of the working hole forms the working opening of the working hole.

According to an embodiment of the present application, the working hole of the tip portion obliquely extends toward a central area of the suction opening of the suction hole.

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

According to an embodiment of the present application, the optical axis of the camera is parallel to the central axis of the suction hole.

According to an embodiment of the present application, the image acquisition device further includes at least one light source, and the light source and the camera are adjacently installed on the tip portion.

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

a mirror body, wherein the mirror body includes a mirror tube and a working part mounted to the mirror tube; and

A tip for a ureteroscope, wherein the tip for a ureteroscope is disposed on the mirror body, and the tip for a ureteroscope includes:

A tip portion, wherein the tip portion is arranged at the front end of the mirror tube, and the tip portion includes a working hole for guiding the working part to pass through, wherein the working hole is opposite to the mirror tube The central axis of the slant extends obliquely forward, so that the working part passing through the working hole protrudes obliquely forward; and

An image acquisition device, wherein the image acquisition device includes a camera installed at the tip, and the head of the working component passing through the suction hole is within the field of view of the camera.

According to an embodiment of the present application, the optical axis of the camera is parallel to the central axis of the mirror tube.

According to an embodiment of the present application, the mirror body further includes a working channel extending axially in the mirror tube for passing through the working part, wherein the working hole at the tip part communicates with the The working channel of the mirror body is such that the working component mounted on the working channel protrudes obliquely forward from the tip portion through the working hole.

According to an embodiment of the present application, the mirror body further includes a suction channel extending axially in the mirror tube, and the tip portion has an imaging end surface and a suction end surface located in front of the imaging end surface, wherein the tip end The part further includes a suction hole communicating with the suction channel, wherein the suction hole extends forward from the rear end face of the tip part to form a suction opening on the suction end face, and the camera is installed on the tip part The camera end face of .

Further objects and advantages of the invention will fully appear from an understanding of the ensuing description and accompanying drawings.

These and other objects, features and advantages of the present invention are fully realized by the following detailed description, drawings and claims.

Beneficial effect

Description of drawings

Fig. 1 shows a schematic diagram of a partial structure of a self-draining ureteroscope in the prior art.

Fig. 2 shows a schematic diagram of the application state of the above-mentioned self-draining ureteroscope.

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

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

Fig. 5 shows a schematic cross-sectional view of the tip for a ureteroscope according to the above-mentioned embodiment of the present invention.

Fig. 6 shows a partial perspective view of the intraoperative ureteroscope according to the above-mentioned embodiment of the present invention.

Fig. 7 shows a schematic partial cross-sectional view of the intraoperative ureteroscope according to the above-mentioned embodiment of the present invention.

Fig. 8 shows a schematic partial top view of the intraoperative ureteroscope according to the above embodiment of the present invention.

Fig. 9 shows a schematic partial cross-sectional view of the scope body of the intraoperative ureteroscope according to the above-mentioned embodiment of the present invention.

Fig. 10 shows a schematic cross-sectional view of the mirror body according to the above-mentioned embodiment of the present invention.

Fig. 11 shows a schematic diagram of the application state of the intraoperative ureteroscope according to the above-mentioned embodiment of the present invention.

Fig. 12 shows a schematic diagram of lithotripsy operation of the intraoperative ureteroscope according to the above-mentioned embodiment of the present invention.

Fig. 13 shows another application state of the intraoperative ureteroscope according to the above-mentioned embodiment of the present invention.

14 and 15 show a first modified embodiment of the intraoperative ureteroscope according to the above-mentioned embodiment of the present invention.

16 and 17 show a second modified embodiment of the intraoperative ureteroscope according to the above-mentioned embodiment of the present invention.

Fig. 18 and Fig. 19 show a third modified embodiment of the intraoperative ureteroscope according to the above-mentioned embodiment of the present invention.

Embodiments of the present invention

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

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

In the present invention, the term "a" in the claims and the specification should be understood as "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element Can be multiple. Unless it is clearly indicated in the disclosure of the present invention that there is only one element, the term "a" cannot be understood as unique or single, and the term "a" cannot be understood as a limitation on the number.

In the description of the present invention, it should be understood that belonging to "first", "second" and so on are only for descriptive purposes, and should not be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise specified and limited, "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integral connection ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through a medium. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Application overview

As mentioned in the background technology, in the actual test process of the existing self-draining ureteroscope, due to factors such as the position of the camera, the direction of the optical fiber, the shape of the suction channel opening, and the arrangement of the perfusion channels, there are blind spots in the working state of the gravel, which makes it difficult for doctors to Make corresponding correct operation feedback. For example, since the optical fiber protruding from the optical fiber channel port will extend from the ureteroscope to the front, no matter how the ureteroscope is rotated, the head of the optical fiber can only touch the front of the ureteroscope, and only the lateral movement of the ureteroscope For ureteroscopy, the head of the optical fiber can only touch the stones hidden in the side of the renal pelvis, but the side wall of the renal pelvis hinders the field of view of the camera, making it impossible for the camera to capture the stones and the head of the optical fiber, which in turn cannot be shown to the doctor. Provide image feedback, which will bring no small safety risk to the operation.

Specifically, the technical concept of this application is to creatively design the tip of the ureteroscope in full consideration of the characteristics of lithotripsy surgery and the actual application scenarios of the ureteroscope, so as to achieve real-time observation The striking state of the optical fiber helps the doctor to make an accurate judgment on the operation state in time.

Based on this, the application provides an intraoperative ureteroscope, including a mirror body and a tip for a ureteroscope, wherein the mirror body includes a mirror tube and a working part installed on the mirror tube, and the ureter The mirror tip includes a tip portion and an image acquisition device, wherein the tip portion is used to be arranged on the front end of the mirror tube, and the tip portion includes a working hole for guiding the working part of the mirror body to pass through, Wherein the working hole extends obliquely forward, so that the working part passing through the working hole protrudes obliquely forward relative to the central axis of the mirror tube; wherein the image acquisition device includes a mounted The camera is located at the tip, so that the head of the working component passing through the suction hole is within the field of view of the camera.

Based on this, the present application provides a tip for a ureteroscope, which is suitable for being configured on a mirror body of a ureteroscope, wherein the tip for a ureteroscope includes: a tip portion, wherein the tip portion is used to be arranged on the mirror body The front end of the mirror tube, and the tip part includes a working hole for guiding the working part of the mirror body to pass through, wherein the working hole extends obliquely forward for passing through the working hole The working part protrudes obliquely forward with respect to the central axis of the mirror tube; and an image acquisition device, wherein the image acquisition device includes a camera mounted on the tip so that the The head of the working part is within the field of view of the camera.

illustrative embodiment

Referring to Fig. 3 to Fig. 12 of the accompanying drawings of the present invention, an embodiment of the present invention provides an intraoperative ureteroscope 1, which can be applied to the treatment of urinary calculi and other diseases. For example, when using the intraoperative ureteroscope 1 of the present application to carry out lithotripsy, in addition to observing the position and state of stones in the body through the intraoperative ureteroscope 1, it is usually necessary to first pass the intraoperative ureteroscope 1. Ureteroscope 1 performs operations such as lithotripsy. Those skilled in the art should understand that, for the convenience of description, the present application defines the direction of entering the body of the intraoperative ureteroscope 1 as anterior, and the direction outside the body as posterior.

Specifically, as shown in FIGS. 3 to 7 , the intraoperative ureteroscope 1 may include a mirror body 10 and a ureteroscope tip 20 adapted to be configured on the mirror body 10 . The mirror body 10 may include a mirror tube 11 and a working part 12 , and the working part 12 is adapted to be mounted on the mirror tube 11 . The tip 20 for the ureteroscope may include a tip portion 21 and an image acquisition device 22, wherein the tip portion 21 is arranged at the front end of the tube 11 for the scope of the scope body 10, and the tip portion 21 includes a The working hole 212 used to guide the working part 12 of the mirror body 10 to pass through, wherein the working hole 212 extends obliquely forward, and is used to make the working part 12 passing through the working hole 212 relatively The central axis 110 of the mirror tube 11 protrudes obliquely forward. The image acquisition device 22 includes a camera 221 installed on the tip portion 21 , so that the head of the working component 12 passing through the working hole 212 is within the field of view of the camera 221 .

It is worth noting that since the working hole 212 in the tip 20 of the ureteroscope extends obliquely forward with respect to the central axis 110 of the tube 11 for the scope, that is, the ureteroscope 1 for intraoperative The working part 12 through which the working part 12 protrudes obliquely forward with respect to the central axis 110 of the mirror tube 11 , so when rotated around the central axis 110 of the mirror tube 11 When the ureteroscope 1 is used in the operation, the head of the working part 12 will point to different directions to hit the stones in different positions, so as to avoid the camera 221 from moving due to the lateral movement of the ureteroscope 1 in the operation. The field of view is blocked, so that the doctor can better operate the intraoperative ureteroscope 1 to observe the head of the working part 12 while beating different stones.

In addition, the working part 12 installed on the mirror tube 11 in the present application can protrude forward from the tip portion 21 to perform corresponding operations. For example, as shown in FIG. 6 and FIG. 7 , the working component 12 may be implemented as an optical fiber 121 , so that laser light is emitted through the optical fiber 121 for lithotripsy. Those skilled in the art can understand that, with the different application scenarios of the intraoperative ureteroscope 1 , the types of the working parts 12 can also be different, and the operator can choose according to the needs.

More specifically, as shown in FIGS. 5 and 7 , the mirror body 10 further includes a working channel 102 extending axially in the mirror tube 11 for wearing the working part 12 , and the tip end The working hole 212 of the part 21 communicates with the working channel 102, so that the working part 12 mounted on the working channel 102 can pass through the working hole 212 to protrude the tip end obliquely forward. part 21 so as to be within the field of view of the camera 221 . It can be understood that the working part 12 inserted into the working channel 102 and the working hole 212 is movable, so that the working part 12 protruding from the working hole 212 can be pushed and pulled. The length of the working part 12 increases or decreases, which is convenient for beating stones in different positions in the renal pelvis. Exemplarily, the optical fiber 121 may be movably installed in the working channel 102 , so that the optical fiber 121 can extend or retract from the working hole 212 by pushing and pulling the optical fiber 121 .

It should be noted that when using the intraoperative ureteroscope 1 for diagnosis and treatment operations, the tip 20 of the ureteroscope will be inserted into the human body, that is, the tip 20 of the ureteroscope will be in a dark environment. Therefore, as As shown in FIG. 4 and FIG. 6 , in order to collect images, the image acquisition device 22 generally needs to further include at least one light source 222, wherein the light source 222 is used to emit light to illuminate the object to be photographed, such as the renal pelvis cavity or the suction opening 2110 etc., and the camera 221 is used to receive the light reflected back by the object to be photographed, so as to capture the image of the object to be photographed, so that the captured image data is transmitted to the outside of the body to be displayed on the display, which is convenient for doctors and other personnel to observe Internal conditions.

Exemplarily, as shown in FIG. 4 and FIG. 8, both the camera 221 and the light source 222 are installed on the tip portion 21, and the light source 222 is located near the camera 221, that is, the The camera 221 and the light source 222 are installed adjacent to the tip 21, which helps to ensure that the light emitted by the light source 222 can be better received by the camera 221 after being reflected by the object to be photographed. to obtain image information.

In detail, the light source 222 can be implemented as, but not limited to, an LED or a cold light source, and the number of the light source 222 can be one or more than one, and the light source 222 can be located on one or both sides of the camera 221. Specifically, it can be configured according to needs and space, which will not be described in detail in this application. It can be understood that the camera 221 can be implemented as, but not limited to, a camera module composed of a lens group and a CMOS image sensor, and can also be implemented as other types of camera modules, as long as it can collect image information.

Preferably, as shown in FIGS. 5 and 7 , the optical axis 2211 of the camera 221 is parallel to the central axis 110 of the mirror tube 11 , that is, the optical axis 2211 of the camera 221 is parallel to the central axis 110 of the mirror tube 11 . The central axis 2121 of the working hole 212 of the tip portion 21 is not parallel to each other, so that the working part 12 passing through the working hole 212 is inclined forward relative to the optical axis 2211 of the camera 221 extend.

More preferably, as shown in FIGS. 5 and 7 , the central axis 2121 of the working hole 212 is located in the meridian image plane 2212 of the camera 221 , so that the working part protruding from the working hole 212 12 extends within the meridian image plane 2212 of the camera 221, so that in the picture taken by the camera 221 displayed on the display, the visual central axis 2210 of the camera 221 will be consistent with the image of the working hole 212 coincides with the center line of the working part 12, that is, the image of the working part 12 protruding from the working hole 212 extends along the visual central axis 2210 of the camera 221, which is convenient for observing and determining the head state of the working part 12 and location. It can be understood that, in order to ensure that the working part 12 protruding from the working hole 212 can be within the field of view of the camera 221, the central axis 2121 of the working hole 212 and the camera 221 The angle between the optical axes 2211 should be smaller than the half angle of view of the camera 221 .

According to the above embodiments of the present application, as shown in FIGS. 5 and 9 , the mirror body 10 further includes a suction channel 101 axially extending in the mirror tube 11 for discharging liquid or gravel. The tip portion 21 may have an imaging end surface 2101 and a suction end surface 2102 located in front of the imaging end surface 2101, wherein the tip portion 21 further includes a suction hole 211 for communicating with the suction channel 101 of the mirror body 10, And the suction hole 211 extends forward from the rear end surface of the tip portion 21 to form a suction opening 2110 on the suction end surface 2102 . Both the camera 221 and the light source 222 of the image acquisition device 22 are installed on the camera end surface 2101 of the tip end 21, so that the suction opening 2110 of the suction hole 211 of the tip end 21 is in the position within the field of view of the aforementioned camera 221. It can be understood that, the imaging end surface 2101 and the suction end surface 2102 jointly form the front end surface of the tip portion 21, and the suction hole 211 extends through the rear end surface of the tip portion 21 to the tip portion 21 front end.

It is worth noting that since the image acquisition device 22 in the tip 20 for the ureteroscope and the suction opening 2110 of the suction hole 211 are respectively located on the imaging end surface 2101 and the suction end surface 2101 of the tip part 21 correspondingly The suction end surface 2102, and the suction end surface 2102 is located in front of the imaging end surface 2101, so the suction opening 2110 of the suction hole 211 will be in front of the image acquisition device 22, so as to achieve suction in front and imaging in the rear The technical effect is convenient to ensure that the suction opening 2110 of the suction hole 211 is partly or completely within the field of view of the image acquisition device 22, so as to observe the working state of the suction opening 2110 in real time, such as whether gravel enters the The suction opening 2110, or whether the suction opening 2110 is blocked, etc., will help the doctor to make a timely and accurate judgment on the operation status.

In detail, as shown in FIG. 4 and FIG. 6 , the suction end surface 2102 of the tip end 21 extends obliquely forward from the imaging end surface 2101 of the tip end 21 so as to be installed on the imaging end surface 2101 of the tip end 21. The image acquisition device 22 of the end surface 2101 is behind, and the suction opening 2110 formed on the suction end surface 2102 is in the front, and the suction opening 2110 is an oblique cut, so as to ensure that the suction opening 2110 is partially or completely within the field of view of the image acquisition device 22 . It can be understood that, in the above examples of the present application, the suction end surface 2102 of the tip 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 end 21 may also be implemented as a flat tangent surface, and at this time the imaging end surface 2101 of the tip end 21 may be located at the end surface 2102 of the suction end. At the gap or in the suction hole 211 , the image acquisition device 22 can still capture the image of the suction opening 2110 .

Preferably, the suction end surface 2102 of the tip portion 21 includes a concave section end surface 21021 arcuately extending inwardly from the imaging end surface 2101, so as to prevent the concave section end surface 21021 from blocking the view of the imaging end surface 2101. Field, helps to ensure that the suction opening 2110 located on the suction end surface 2102 falls within the field of view of the image capture device 22 . At the same time, the size of the suction opening 2110 of the tip portion 21 can rapidly expand to the maximum inner diameter of the suction channel 101 on the end surface 21021 of the concave section, which helps to prevent larger debris from blocking the suction. Opening 2110.

More preferably, the suction end surface 2102 of the tip end 21 further includes a convex section end surface 21022 arcuately extending outward from the concave section end surface 21021 , so that the tip end 21 has a blunt body structure, Avoiding the formation of a sharp head on the tip portion 21 helps to prevent the tip portion 21 from damaging human organs.

Most preferably, the convex section end surface 21022 of the suction end surface 2102 is tangent to the concave section end surface 21021 of the suction end surface 2102, and the concave section end surface 21021 of the suction end surface 2102 is tangent to the The camera end surface 2101, so that the concave end surface 21021 of the suction end surface 2102 smoothly extends from the camera end surface 2101 to the convex section end surface 21022, so as to ensure that the tip end 21 has a smooth end surface, and further avoid The tip portion 21 damages human organs.

Exemplarily, the field of view angle of the camera 221 may be, but not limited to, implemented as 120°. According to the above arrangement of the present application, the intraoperative ureteroscope 1 of the present application does not increase the field of view of the camera 221. When the field angle is low, the tip 20 for the ureteroscope can be visualized, which helps to observe whether the suction opening 2110 of the tip portion 21 is blocked or whether debris enters the suction opening 2110 . Of course, in other examples of the present application, the field of view angle of the camera 221 may also be implemented as other angles.

Preferably, as shown in FIGS. 5 and 7 , 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 parallel to the direction of the suction hole 211 . The axial directions are the same, so that the camera 221 can partially capture the suction opening 2110 of the suction hole 211 while capturing the state directly in front of the tip portion 21 . It can be understood that, in other examples of the present application, the optical axis 2211 of the camera 221 may not be parallel to the central axis 2111 of the suction hole 211, but deviates to the center axis 2111 of the suction hole 211. The central axis 2111 is used to make the field of view of the camera 221 cover more parts of the suction opening 2110 of the suction hole 211 .

It is worth noting that the imaging end surface 2101 and the suction end surface 2102 of the tip portion 21 in the intraoperative ureteroscope 1 of the present application are arranged oppositely, that is, the imaging end surface 2101 and the suction end surface The relative positions between 2102 can be divided into up and down in addition to front and back. For example, in an example of the present application, as shown in FIG. 11 and FIG. 12 , the imaging end surface 2101 can be located Above, that is, the suction end surface 2102 extends obliquely forward and downward from the imaging end surface 2101, so that the image acquisition device 22 is placed on the top, and the suction opening 2110 is placed on the bottom. At this time, the suction opening 2110 The image is in the lower part of the display. Of course, in other examples of the present application, as shown in FIG. 13 , the imaging end surface 2101 may also be located below the suction end surface 2102, that is, the suction end surface 2102 is inclined forward and upward from the imaging end surface 2101. Extend, so that the image acquisition device 22 is placed downwards, and the suction opening 2110 is placed upwards, at this time, the image of the suction opening 2110 is at the upper part of the display screen. It can be understood that the up, down, left, and right mentioned in this application are defined according to the image acquisition device 22 placed upright, that is, the up, down, left, and right mentioned in this application correspond to the image acquisition device 22 respectively. 22 on the top, bottom, left and right when it is placed upright.

Preferably, as shown in FIG. 5 to FIG. 7 , the working opening 2120 of the working hole 212 of the tip end 21 faces the suction opening 2110 of the suction hole 211 of the tip end 21 , so that through the The optical fiber 121 of the working hole 212 can protrude from the suction opening 2110 of the tip portion 21, which helps to ensure that the protruding part of the optical fiber 121 can be within the field of view of the image acquisition device 22 , to facilitate observation of the position and state of the protruding portion of the optical fiber 121 .

It can be understood that, since the working hole 212 of the tip portion 21 extends obliquely forward, and the working opening 2120 of the working hole 212 corresponds to the suction of the suction hole 211 of the tip portion 21 . The opening 2110 , so the optical fiber 121 passing through the working hole 212 can obliquely protrude forward from the suction opening 2110 of the tip portion 21 . In this way, when the optical fiber 121 is operated to protrude from the suction opening 2110 of the suction hole 211, the laser emitted through the optical fiber 121 can strike stones in human organs to perform lithotripsy; 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. If gravel blockage occurs, the released holmium laser will hit the blocked gravel, so as to achieve the effect of dredging the suction hole 211 .

Preferably, as shown in FIG. 5 and FIG. 7 , the working hole 212 of the tip portion 21 extends forwardly and inwardly from the rear end surface of the tip portion 21 to the inner wall surface of the suction hole 211 , The working opening 2120 is formed on the inner wall surface of the suction hole 211, that is, relative to the suction hole 211, the working hole 212 is implemented as an inclined hole, so that all holes passing through the working hole 212 The optical fiber 121 can protrude from the inner wall of the suction hole 211 , so as to prevent the optical fiber 121 from hindering debris or fluid from entering the suction channel 101 through the suction hole 211 and being discharged.

More preferably, the working hole 212 of the tip portion 21 extends obliquely toward the central area of the suction opening 2110 of the tip portion 21 , so that the optical fiber 121 passing through the working hole 212 can be drawn from The central area of the suction opening 2110 protrudes.

Exemplarily, in the above-mentioned embodiments of the present application, as shown in FIG. 6 and FIG. 7 , the working hole 212 of the tip portion 21 may extend obliquely from top to bottom, so that the working hole 212 passes through The optical fiber 121 protrudes from the upper side of the suction hole 211 obliquely downwards from the suction opening 2110, so that the optical fiber 121 protruding from the suction opening 2110 is in the meridian image of the camera 221 The surface 2212 extends in such a way that the image of the optical fiber 121 extends substantially along the central visual axis 2210 of the camera 221, that is to say, the center line of the image of the optical fiber 121 is in line with the center line of the camera 221. The central axis of vision 2210 is substantially coincident, so that such as the turning of the renal pelvis will not be blocked by tissue, not only the stone can be observed, but also the striking position of the optical fiber 121 can be seen.

It should be noted that, in the first modified embodiment of the present application, as shown in FIG. 14 and FIG. The optical fiber 121 of the working hole 212 protrudes obliquely upward from the suction opening 2110 from the lower side of the suction hole 211; or, in the second modified embodiment of the present application, as shown in FIGS. 16 and 17 , The working hole 212 of the tip portion 21 may also extend obliquely from left to right, so that the optical fiber 121 passing through the working hole 212 protrudes obliquely from the left side of the suction hole 211 to the right. The suction opening 2110 is described above. Alternatively, in the third modified embodiment of the present application, as shown in Fig. 18 and Fig. 19, the working hole 212 of the tip part 21 may also extend obliquely from right to left, so that the working hole 212 passes through the working hole. The optical fiber 121 of the hole 212 protrudes obliquely from the right side of the suction hole 211 to the left of the suction opening 2110 .

In addition, according to the above embodiments of the present application, as shown in FIG. 5 , FIG. 7 and FIG. 10 , the suction channel 101 and the working channel 102 in the mirror body 10 may be independent of each other, that is, The suction channel 101 and the working channel 102 respectively extend between the front end and the rear end of the mirror body 10 . It can be understood that since the suction channel 101 and the working channel 102 are independent of each other, the working component 12 (such as the optical fiber 121 ) installed in the working channel 102 will not enter the The suction channel 101 is used to prevent the working part 12 from interfering with the movement of fluid or gravel in the suction channel 101 and to avoid congestion of the suction channel 101 .

It is worth mentioning that, in other examples of the present application, as shown in FIG. 15 , FIG. 17 and FIG. 19 , the suction channel 101 and the working channel 102 in the mirror body 10 may also be connected, That is to say, the suction channel 101 and the working channel 102 can be implemented as the same channel, but since the working hole 212 is inclined from the outside to the inside from the side wall of the suction hole 211 of the tip part 21 extended, so the optical fiber 121 passing through the working hole 212 will extend against the inner wall of the suction channel 101, that is to say, the optical fiber 121 first extends against the inner wall of the suction channel 101, and then passes through The suction opening 2110 of the suction hole 211 protrudes obliquely through the working hole 212. At this time, the optical fiber 121 can still avoid disturbing the movement of fluid or gravel in the suction channel 101 to a certain extent. Avoid congestion of the suction channel 101 . 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 greatest extent, which helps to reduce the 10 manufacturing difficulty and manufacturing cost; at the same time, once debris blockage occurs in the suction channel 101 of the mirror body 10, the optical fiber 121 can be pulled so that the end of the optical fiber 121 is in the The clogged gravel in the suction channel 101 is hit by the laser emitted through the optical fiber 121 to unclog the suction channel 101 .

According to the above-mentioned embodiments of the present application, as shown in FIG. 6 and FIG. 9 , the scope body 10 of the intraoperative ureteroscope 1 may further include a perfusion channel 103 for transmitting perfusion fluid (such as water, etc.), and the The perfusion channel 103 extends axially in the tube 11 for the scope; wherein the tip portion 21 of the tip 20 of the ureteroscope further includes a perfusion hole 213 communicating with the perfusion channel 103 for the The perfusate transported by the perfusion channel 103 is discharged from the tip portion 21 to perfuse into human organs. In this way, when the intraoperative ureteroscope 1 is operated, after the intraoperative ureteroscope 1 is inserted into the kidney, the perfusion fluid such as water first flows through the perfusion channel 103 to all parts of the tip part 21. the perfusion hole 213, and then enter into the kidney through the perfusion hole 213 to realize the perfusion operation; the working parts 12 such as the optical fiber 121 extend from the working channel 102 to the working hole 212 to extend out of the suction hole 211 The suction opening 2110 of the suction hole 2110 performs lithotripsy; at the same time, excess perfusate and debris can flow from the suction hole 211 to the suction channel 101 to be discharged from the body.

Preferably, as shown in FIG. 6 and FIG. 9 , the perfusion hole 213 of the tip portion 21 extends from the rear end surface of the tip portion 21 to the outer peripheral side 2103 of the tip portion 21 , so that at the tip portion The outer peripheral side 2103 of the tip 21 forms one or more perfusion openings 2130, so that the perfusion liquid flows outward from the outer peripheral side 2103 of the tip part 21 through the perfusion openings 2130 of the perfusion hole 213, so as to A controllable and orderly fluid circulation is formed in front of the tip portion 21 , which helps to drive gravel to the suction opening 2110 in all directions for efficient suction. It is understandable that, according to the law of conservation of momentum and the principle of negative pressure attraction in fluid mechanics, the kinetic energy possessed by the perfusate during high-speed flow is used to promote the generation of fragmented stones (detrital stones) deposited at the bottom of the renal pelvis with relatively heavy mass. Displacement, changing direction after encountering obstacles from the inner surface of the renal pelvis, and then moving upward along the inner wall of the renal pelvis, when reaching the front of the suction opening 2110, the pressure near the suction opening 2110 is low, and the perfusate is forced to flow to The suction opening 2110 drives gravel into the suction opening 211 until it is excreted from the body. The continuous liquid perfusion and suction in this process can make the perfusion liquid form a continuous circular motion track (vortex) approximately semi-circular between the perfusion opening 2130 and the suction opening 2110, by adjusting the flow rate and the size of the suction force , can control the diameter or trajectory of the semicircle, realize targeted and controllable suction of gravel, and greatly improve the efficiency of stone cleaning.

In addition, since the outer peripheral side 2103 of the tip portion 21 has a larger area, the number and size of the perfusion openings 2130 of the perfusion hole 213 need not be limited by the smaller end surface of the tip portion 21 , so that the effective area of the perfusion opening 2130 of the perfusion hole 213 is greatly increased, which helps to form a large perfusion flow rate under a relatively low perfusion pressure, and under the same negative pressure in the suction A larger suction flow is formed in the hole 211, so as to achieve an optimal perfusion-suction ratio and enhance stone-discharging efficiency.

More preferably, as shown in FIGS. 9 and 10 , the perfusion channel 103 of the mirror body 10 has a special-shaped structure, and the perfusion channel 103 wraps around the suction channel 101 so as not to increase the In the case of the outer diameter of the scope tube 11 of the scope body 10 , increasing the effective diameter of the perfusion channel 103 helps to increase the perfusion flow rate. Exemplarily, the perfusion channel 103 of the mirror body 10 may have a circular cross-sectional structure, so that the perfusion channel 103 surrounds the suction channel 101 . It can be understood that the ring in the annular cross-sectional structure may refer to a full ring, that is, the suction channel 101 is completely surrounded by the perfusion channel 103; of course, the ring in the annular cross-sectional structure may also refer to A gap ring, ie the suction channel 10 is partially surrounded by the perfusion channel 103 .

Optionally, as shown in FIG. 10 , the perfusion channel 103 and the working channel 102 of the mirror body 10 jointly surround the suction channel 101 , so that In the case of the outer diameter of the tube 11, the inner diameter of the suction channel 101 is maximized to reduce the risk of the suction channel 101 being blocked by debris. 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 perfusion channel 103 of the mirror body 10 may have a notched circular cross-section to partially cover the suction channel. around the channel 101 , and form a gap around the suction channel 101 for arranging the working channel 102 , so that the perfusion channel 103 and the working channel 102 surround the suction channel 101 together.

It should be noted that, in the above example of the present application, as shown in FIG. 9 and FIG. In other examples, the working channel 102 and the perfusion channel 103 of the scope body 10 may also communicate with each other, that is, the working channel 102 and the perfusion channel 103 of the scope body 10 communicate with each other, Forming a complete annular channel around the suction channel 101 helps to simplify the structure of the scope body 10 and reduce the manufacturing cost of the intraoperative ureteroscope 1 .

According to the above embodiment of the present application, as shown in FIG. 3 , the scope body 10 of the intraoperative ureteroscope 1 may further include an operating part 13 arranged at the rear end of the scope tube 11, and the scope The tube 11 may include an insertion portion 111 extending forward from the operating portion 13 and a bendable portion 112 extending forward from the insertion portion 111, wherein the tip 20 for the ureteroscope is disposed on the tube for the scope. 11, and the bendable portion 112 of the endoscope tube 11 can be operated by the operating portion 13 to bend or straighten, so that the tip 20 of the ureteroscope is close to the target position, as The location of stones in the renal pelvis, etc.

In addition, as shown in FIG. 3 , the operating portion 13 of the mirror body 10 may include a suction interface 1301 communicating with the suction channel 101 , a working interface 1302 communicating with the working channel 102 , and a working interface 1302 communicating with the perfusion channel 103 . Connected perfusion interface 1303, wherein the suction interface 1301 of the operating part 13 is suitable for connecting with a suction device, so as to attract water and gravel to move from the suction channel 101 to be discharged through the suction device; wherein the working The interface 1302 is used to pass through the working part 12, so that the working part 12 is inserted into the working channel 102 through the working interface 1302; wherein the perfusion interface 1303 is suitable for connecting with a perfusion device to pass through the perfusion device Inject perfusate into the perfusion channel 103 .

In particular, as shown in FIG. 3 , the operating part 13 of the mirror body 10 may further include an information interface 1304 communicably connected with the image acquisition device 22, wherein the information interface 1304 is suitable for connecting such as A terminal device such as a display screen is used to communicatively connect the image acquisition device 22 and the terminal device, that is, the terminal device can process or display the information collected by the image acquisition device 22 .

It should be understood by those skilled in the art that the embodiments of the present invention shown in the foregoing description and drawings are only examples and do not limit the present invention. The objects of the present invention have been fully and effectively accomplished. The functions and structural principles of the present invention have been shown and described in the embodiments, and the embodiments of the present invention may have any deformation or modification without departing from the principles.

Claims

A tip for a ureteroscope, suitable for being configured on a mirror body of a ureteroscope, wherein the tip for a ureteroscope includes:

The tip portion, wherein the tip portion is used to be arranged on the front end of the mirror tube of the mirror body, and the tip portion includes a working hole for guiding the working parts of the mirror body to pass through, wherein the working hole extending obliquely forward for protruding obliquely forward with respect to the central axis of the mirror tube; and

An image acquisition device, wherein the image acquisition device includes a camera installed on the tip, so that the head of the working component passing through the working hole is within the field of view of the camera.
The tip for ureteroscope according to claim 1, wherein the central axis of the working hole of the tip portion and the optical axis of the camera are not parallel to each other.
The tip for ureteroscope according to claim 2, wherein the central axis of the working hole is located in the meridional image plane of the camera.
The tip for ureteroscope according to claim 1, wherein the working hole of the tip part is used to communicate with the working channel of the scope body, so that the working part that is mounted on the working channel passes through the working hole The tip end protrudes obliquely forward.
The tip for a ureteroscope according to any one of claims 1 to 4, wherein the tip portion has an imaging end surface and a suction end surface located in front of the imaging end surface, and the tip portion further includes a The suction hole of the suction channel, wherein the suction hole extends forward from the rear end face of the tip part to form a suction opening on the suction end face, and the camera is installed on the camera end face of the tip part .
The tip for ureteroscope according to claim 5, wherein the working opening of the working hole of the tip portion faces the suction opening of the suction hole of the tip portion.
The tip for ureteroscope according to claim 6, wherein the working hole of the tip part extends forwardly and inwardly from the rear end surface of the tip part to the inner wall surface of the suction hole, The working opening of the working hole is formed on the inner wall surface of the suction hole.
The tip for a ureteroscope according to claim 7, wherein the working hole of the tip portion extends obliquely toward a center region of the suction opening of the suction hole.
The tip for a ureteroscope according to claim 5, wherein the suction end surface of the tip portion extends obliquely forward from the imaging end surface.
The tip for ureteroscope according to claim 5, wherein the optical axis of the camera is parallel to the central axis of the suction hole.
The tip for ureteroscope according to any one of claims 1 to 4, wherein the image acquisition device further comprises at least one light source, and the light source and the camera are installed adjacent to the tip.
An intraoperative ureteroscope, characterized in that it comprises:

a mirror body, wherein the mirror body includes a mirror tube and a working part mounted to the mirror tube; and

A tip for a ureteroscope, wherein the tip for a ureteroscope is disposed on the mirror body, and the tip for a ureteroscope includes:

A tip portion, wherein the tip portion is arranged at the front end of the mirror tube, and the tip portion includes a working hole for guiding the working part to pass through, wherein the working hole is opposite to the mirror tube The central axis of the slant extends obliquely forward, so that the working part passing through the working hole protrudes obliquely forward; and

An image acquisition device, wherein the image acquisition device includes a camera installed at the tip, and the head of the working component passing through the working hole is within the field of view of the camera.
The intraoperative ureteroscope according to claim 12, wherein the optical axis of the camera head is parallel to the central axis of the scope tube.
The intraoperative ureteroscope according to claim 13, wherein the central axis of the working hole is in the meridional image plane of the camera.
The intraoperative ureteroscope according to claim 12, wherein said scope body further includes a working channel extending axially in said scope tube, used to wear said working part, wherein said tip part The working hole communicates with the working channel of the mirror body, so that the working component mounted on the working channel obliquely protrudes forward from the tip portion through the working hole.
The intraoperative ureteroscope according to any one of claims 12 to 15, wherein the scope body further includes a suction channel extending axially in the tube for the scope, and the tip portion has an imaging end surface and is located at the The suction end face in front of the camera end face, wherein the tip end further includes a suction hole communicating with the suction channel, wherein the suction hole extends forward from the rear end face of the tip end to form a suction opening on the suction end face , and the camera is mounted on the camera end face of the tip.
The intraoperative ureteroscope according to claim 16, wherein the suction end surface of the tip portion extends obliquely forward from the imaging end surface.
The intraoperative ureteroscope according to any one of claims 12 to 15, wherein the image acquisition device further comprises at least one light source, and the light source and the camera are adjacently installed on the tip .