Fiberoptic visualizing ureteroscope

Abstract

The application discloses a ureteroscope for optical fiber visual surgery, which comprises a mirror body and a ureteroscope tip, wherein the mirror body comprises a mirror tube and working components installed on the mirror tube; the ureteroscope tip is arranged on the mirror body, and the ureteroscope tip comprises a tip part and an image acquisition device; the tip part is arranged at the front end of the mirror tube and comprises a working hole for guiding the working components to extend forwardly out of the tip part; the image acquisition device comprises a camera installed on the tip part, and the working components extending out of the working hole extend forwardly to the meridian image plane of the camera, so that the head image of the working components is in the visual central axis of the camera.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a ureteroscope for optical fiber visual surgery. BACKGROUND

[0002] Urinary system stones are a common disease. In recent years, with the development of minimally invasive treatment technology, ureteroscopes have become an important treatment method for such diseases. The existing ureteroscopes for urinary system stone surgery mainly include hard and soft scopes. The hard scope is relatively hard and cannot be bent, so it is only suitable for the diagnosis and treatment of diseases such as ureteral stones. Instead, the soft scope has gradually become an important treatment method for urinary system stones. For example, the traditional soft ureteroscope has deficiencies in image acquisition, stone crushing, and residual stone cleaning, such as being unable to aim at the stone when the stone is seen at the turning point in the renal pelvis, or the image is blocked by the inner wall of the renal pelvis after aiming, or the head of the soft scope has only a small channel, and only fiber lithotripsy can be performed, but residual stones cannot be efficiently removed from the body, resulting in low surgical efficiency and other problems.

[0003] In order to solve the above problems, clinical experts have proposed using the principle of negative pressure suction to timely suck the crushed stones out of the body. For example, as shown in Figure 1 A self-filling and draining ureteroscope 1P is applied for in Chinese utility model patent CN212574841U. The advantage is that the camera 10P, the irrigation port 20P, the fiber channel port 30P located behind the camera 10P, and the suction channel port 40P are all arranged on the front end face of the ureteroscope, and the optical fiber 50P can extend from the fiber channel port 30P to emit laser to hit the stone, the working image is collected by the camera 10P to observe the stone hit by the optical fiber 50P, and the working cycle is formed by combining water flow to flush the stone and suction to improve the stone cleaning efficiency.

[0004] 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 port, and the arrangement of the irrigation channel, there is a blind area in the stone crushing working state, which makes it difficult for the doctor to make 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, the optical fiber 50P extending from the fiber channel port 30P will only extend to the front of the ureteroscope. No matter how long the optical fiber 50P extends, the image of the optical fiber 50P is located on the side of the picture taken by the camera 10P, and does not intersect or coincide with the visual axis 100P of the camera 10P, resulting in that although the stone is displayed in front of the optical fiber 50P in the picture, the stone is actually located on the side of the optical fiber 50P in reality, and the stone cannot be aimed, which is easy to injure the human body organs. SUMMARY

[0005] An advantage of the present application is to provide a ureteroscope for fiber-optic visual surgery, which can observe the image of the head of the fiber-optic in the visual central axis of the camera, and help to aim at the stone, and reduce the risk of injuring the human body organs.

[0006] Another advantage of the present application is to provide a ureteroscope for fiber-optic visual surgery, wherein in an embodiment of the present application, the ureteroscope for fiber-optic visual surgery can control the head of the fiber-optic to extend in the tangential image plane of the camera, so as to ensure that the image of the head of the fiber-optic in the picture taken by the camera is always in the visual central axis of the camera.

[0007] Another advantage of the present application is to provide a ureteroscope for fiber-optic visual surgery, wherein in an embodiment of the present application, the ureteroscope for fiber-optic visual surgery can guide the fiber-optic to extend obliquely forward through the oblique working hole, so as to change the position of the head of the fiber-optic by only rotating the ureteroscope, and facilitate the observation of the head of the fiber-optic when hitting the stone.

[0008] Another advantage of the present application is to provide a ureteroscope for fiber-optic visual surgery, wherein in an embodiment of the present application, the optical axis of the camera in the ureteroscope for fiber-optic visual surgery intersects with the central axis of the working hole, so that the head of the fiber-optic extending from the working hole intersects with the optical axis of the camera, and the image of the head of the fiber-optic extends to the visual central axis of the camera.

[0009] Another advantage of the present application is to provide a ureteroscope for fiber-optic visual surgery, wherein in an embodiment of the present application, the central axis of the working hole in the ureteroscope for fiber-optic visual surgery is in the tangential image plane of the camera, so that the image of the fiber-optic passing through the working hole coincides with the visual central axis of the camera, and facilitate the observation habit of human beings.

[0010] Another advantage of the present application is to provide a ureteroscope for fiber-optic visual surgery, wherein in an embodiment of the present application, the ureteroscope for fiber-optic visual surgery can make the suction opening of the suction hole in the field of view of the image acquisition device, so as to observe in real time whether the crushed stone enters the suction opening of the suction hole, or whether the suction opening of the suction hole is blocked, and the like.

[0011] Another advantage of the present application is to provide a ureteroscope for fiber-optic visual surgery, wherein in an embodiment of the present application, the tangential image plane of the camera in the ureteroscope for fiber-optic visual surgery passes through the suction opening of the suction hole, so that the visual central axis of the camera passes through the suction opening, and facilitate the observation of the state of the suction opening.

[0012] Another advantage of the present application is to provide a ureteroscope for fiber-optic visual surgery, wherein in an embodiment of the present application, the ureteroscope for fiber-optic visual surgery can get rid of the limitation of the field of view of the image acquisition device by sucking in front and imaging behind, so as 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.

[0013] Another advantage of the present application is to provide a ureteroscope for fiber-optic visual surgery, wherein in an embodiment of the present application, the ureteroscope for fiber-optic visual surgery can make the working state of the tip of the ureteroscope visualized by the inclined design of the suction opening, which helps the doctor to master the operation state.

[0014] Another advantage of the present application is to provide a ureteroscope for fiber-optic visual surgery, wherein in an embodiment of the present application, the ureteroscope for fiber-optic visual surgery can make the suction opening of the suction hole cover the front end face of the tip as much as possible, so as to increase the size of the suction opening and reduce the risk of the suction opening being blocked.

[0015] Another advantage of the present application is to provide a ureteroscope for fiber-optic visual surgery, wherein in order to achieve the above advantages, the present application does not need to use a complex structure or design. Therefore, the present application successfully and effectively provides a solution, not only provides a simple ureteroscope for fiber-optic visual surgery, but also increases the practicability and reliability of the ureteroscope for fiber-optic visual surgery.

[0016] In order to achieve at least one of the above advantages or other advantages and objectives, the present application provides a ureteroscope for fiber-optic visual surgery, comprising:

[0017] a mirror body, wherein the mirror body comprises a mirror tube and a working component mounted on the mirror tube; and

[0018] a ureteroscope tip, wherein the ureteroscope tip is arranged on the mirror body, and the ureteroscope tip comprises:

[0019] a tip portion, wherein the tip portion is arranged at the front end of the mirror tube, and the tip portion comprises a working hole for passing the working component, so that the working component is guided to extend forwardly out of the tip portion through the working hole; and

[0020] an image acquisition device, wherein the image acquisition device comprises a camera mounted on the tip portion, and the working component extending out of the suction hole extends forwardly to the meridian image plane of the camera, so that the head image of the working component is in the visual central axis of the camera.

[0021] According to an embodiment of the present application, the center axis of the working hole of the tip portion intersects the image plane of the camera.

[0022] According to an embodiment of the present application, the center axis of the working hole of the tip portion is in the image plane of the camera.

[0023] According to an embodiment of the present application, the center axis of the working hole intersects the optical axis of the camera.

[0024] According to an embodiment of the present application, the working member extending from the working hole extends obliquely forward in the up-down direction to the optical axis of the camera.

[0025] According to an embodiment of the present application, the working member extending from the working hole extends obliquely forward in the left-right direction to the optical axis of the camera.

[0026] According to an embodiment of the present application, the mirror body further comprises a working channel extending axially in the mirror tube for accommodating the working member, wherein the working hole of the tip portion is communicated with the working channel of the mirror body, so that the working member accommodated in the working channel extends forward out of the tip portion via the working hole.

[0027] According to an embodiment of the present application, the mirror body further comprises a suction channel extending axially in the mirror tube, and the tip portion has a camera end face and a suction end face located forward of the camera end face, wherein the tip portion further comprises a suction hole communicated with the suction channel, wherein the suction hole extends forward from the rear end face of the tip portion to form a suction opening at the suction end face, and the camera is mounted to the camera end face of the tip portion.

[0028] According to an embodiment of the present application, the suction end face of the tip portion extends obliquely forward from the camera end face.

[0029] According to an embodiment of the present application, the working opening of the working hole of the tip portion is directed toward the suction opening of the suction hole of the tip portion.

[0030] According to an embodiment of the present application, the working hole of the tip portion extends obliquely forward and inward from the rear end face of the tip portion to an inner wall face of the suction hole to form the working opening of the working hole at the inner wall face of the suction hole.

[0031] According to an embodiment of the present application, the optical axis of the camera is deviated from or parallel to the center axis of the suction hole.

[0032] According to an embodiment of the present application, the image collecting device further comprises at least one light source, and the light source and the camera are adjacently mounted on the tip portion.

[0033] According to an embodiment of the present application, the mirror body further comprises a perfusion channel axially extending in the mirror tube, and the tip portion further comprises a perfusion hole communicating with the perfusion channel, wherein the perfusion hole extends from the rear end surface of the tip portion to the peripheral side surface of the tip portion to form one or more perfusion openings on the peripheral side surface of the tip portion.

[0034] According to an embodiment of the present application, the perfusion channel of the mirror body has a special-shaped structure, and the perfusion channel is wrapped around the suction channel.

[0035] According to an embodiment of the present application, the perfusion channel of the mirror body and the working channel communicate with each other to form a complete annular channel around the suction channel.

[0036] According to an embodiment of the present application, the working component is an optical fiber for emitting laser for lithotripsy.

[0037] The further objects and advantages of the present application will be more fully understood from the following description and drawings.

[0038] These and other objects, features and advantages of the present application will become apparent from the following description of the embodiments, drawings and claims. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 A partial structural schematic diagram of a prior art self-perfusion ureteroscope is shown.

[0040] Figure 2 An application schematic diagram of the above self-perfusion ureteroscope is shown.

[0041] Figure 3 A state schematic diagram of a fiber-optic visual surgery ureteroscope according to an embodiment of the present application is shown.

[0042] Figure 4 A partial enlarged schematic diagram of the fiber-optic visual surgery ureteroscope according to the above embodiment of the present application is shown.

[0043] Figure 5 An application schematic diagram of the fiber-optic visual surgery ureteroscope according to the above embodiment of the present application is shown.

[0044] Figure 6 A partial cross-sectional schematic diagram of the fiber-optic visual surgery ureteroscope according to the above embodiment of the present application is shown.

[0045] Figure 7 A cross-sectional view of the ureteroscope tip of the fiber-optic visual surgery ureteroscope according to the above embodiment of the present application is shown.

[0046] Figure 8 A partial top view of the fiber-optic visual surgery ureteroscope according to the above embodiment of the present application is shown.

[0047] Figure 9 A partial cross-sectional view of the mirror body of the fiber-optic visual surgery ureteroscope according to the above embodiment of the present application is shown.

[0048] Figure 10 A cross-sectional view of the mirror body according to the above embodiment of the present application is shown.

[0049] Figure 11 A variant example of the mirror body according to the above embodiment of the present application is shown.

[0050] Figure 12 A lithotripsy operation view of the fiber-optic visual surgery ureteroscope according to the above embodiment of the present application is shown.

[0051] Figure 13 Another application state view of the fiber-optic visual surgery ureteroscope according to the above embodiment of the present application is shown.

[0052] Figure 14 A first variant example of the fiber-optic visual surgery ureteroscope according to the above embodiment of the present application is shown.

[0053] Figure 15 A partial cross-sectional view of the fiber-optic visual surgery ureteroscope according to the above first variant example of the present application is shown.

[0054] Figure 16 An application view of the fiber-optic visual surgery ureteroscope according to the above first variant example of the present application is shown.

[0055] Figure 17 A second variant example of the fiber-optic visual surgery ureteroscope according to the above embodiment of the present application is shown.

[0056] Figure 18 A partial cross-sectional view of the fiber-optic visual surgery ureteroscope according to the above second variant example of the present application is shown.

[0057] Figure 19 An application view of the fiber-optic visual surgery ureteroscope according to the above second variant example of the present application is shown.

[0058] Figure 20 A third variant of the optical fiber visual surgery ureteroscope according to the above embodiment of the present application is shown.

[0059] Figure 21 A partial cross-sectional view of the optical fiber visual surgery ureteroscope according to the above third variant of the present application is shown.

[0060] Figure 22 An application view of the optical fiber visual surgery ureteroscope according to the above third variant of the present application is shown. DETAILED DESCRIPTION

[0061] The following description is provided to enable those skilled in the art to realize the present application. The preferred embodiments in the following description are only examples and other obvious modifications can be made by those skilled in the art. The basic principles defined in the following description can be applied to other embodiments, variants, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present application.

[0062] Those skilled in the art should understand that in the disclosure of the present application, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present application.

[0063] In the present application, the term "one" in the claims and the description should be understood as "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple. Unless it is explicitly shown in the disclosure of the present application that the number of the element is only one, the term "one" cannot be understood as unique or single, and the term "one" cannot be understood as a limitation on the number.

[0064] In the description of the present application, it should be understood that "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, "connected", "connected" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through a medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0065] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0066] SUMMARY

[0067] As described in the background, in the actual test process of the existing self-irrigation and drainage ureteroscope, the working state of the lithotripsy has a blind area due to the factors such as the position of the camera, the direction of the optical fiber, the shape of the suction passage port, and the arrangement of the irrigation passage, etc., which makes it difficult for the doctor to make corresponding correct operation feedback. For example, since the optical axis of the camera is parallel to the central axis of the optical fiber passage port, and the camera is located at the side of the optical fiber passage port, the optical fiber extending from the optical fiber passage port will only extend to the front of the ureteroscope, so no matter how long the optical fiber extends, the image of the optical fiber is located at the side of the picture taken by the camera, and does not intersect with the visual central axis of the camera, resulting in that although the stone is displayed in the picture in front of the optical fiber, the stone is actually located at the side of the optical fiber in reality, and the stone cannot be aimed, which is easy to injure the human organs.

[0068] Specifically, the technical concept of the present application is to creatively design the tip of the ureteroscope in full consideration of the characteristics of the lithotripsy surgery and the actual application scene of the ureteroscope, so as to realize the demand of minimally invasive treatment surgery, and the image of the head of the optical fiber is on the visual central axis of the camera, so that the stone is always located in front of the optical fiber in the process of hitting the stone, which helps to control the aiming point of the optical fiber at any time, and reduces the risk of injuring human organs such as the renal pelvis.

[0069] Based on this, the application provides a ureteroscope for fiber visual surgery, comprising a mirror body and a ureteroscope tip configured to the mirror body, wherein the mirror body comprises a mirror tube and a working component installed to the mirror tube, and the ureteroscope tip comprises: a tip part, wherein the tip part is arranged at the front end of the mirror tube, and the tip part comprises a working hole for leading the working component, so as to guide the working component to extend forwardly out of the tip part through the working hole; and an image acquisition device, wherein the image acquisition device comprises a camera installed to the tip part, and the working component extending out of the working hole extends forwardly to the meridian image plane of the camera, so that the head image of the working component is in the visual central axis of the camera.

[0070] Exemplary embodiments

[0071] With reference to the drawings of the present application Figures 3 to 12 , an embodiment of the present application provides a ureteroscope 1 for fiber visual surgery, which can be applied to treat diseases such as urinary system stones. For example, when performing a lithotripsy operation by using the ureteroscope 1 for fiber visual surgery of the present application, in addition to observing the position and state of the stone in the body by using the ureteroscope 1 for fiber visual surgery, it is usually necessary to first perform a stone crushing operation by using the ureteroscope 1 for fiber visual surgery. It should be understood by those skilled in the art that, for the purpose of illustration, the present application defines the direction of entering the body in the ureteroscope 1 for fiber visual surgery as front, and the direction of being located outside the body as back.

[0072] Specifically, as Figures 3 to 9 shown, the ureteroscope 1 for fiber visual surgery can comprise a mirror body 10 and a ureteroscope tip 20 configured to the mirror body 10. The mirror body 10 can comprise a mirror tube 11 and a working component 12, and the working component 12 is adapted to be installed to the mirror tube 11. The ureteroscope tip 20 can comprise a tip part 21 and an image acquisition device 22, wherein the tip part 21 is arranged at the front end of the mirror tube 11, and the tip part 21 comprises a working hole 212 for leading the working component 12, so as to guide the working component 12 to extend forwardly out of the tip part 21 through the working hole 212. The image acquisition device 22 comprises a camera 221 installed to the tip part 21, and the working component 12 extending out of the working hole 212 extends forwardly to the meridian image plane 2211 of the camera 221, so that the head image of the working component 12 is in the visual central axis 2210 of the camera 221.

[0073] It is worth noting that since the working part 12 extending from the working hole 212 extends to the meridional image plane 2211 of the camera 221, in the picture taken by the camera 221, the head image of the working part 12 will be on the visual central axis 2210 of the camera 221, at this time, only need to make the head image of the working part 12 close to the stone image along the visual central axis 2210 of the camera 221, can make the stone in front of the working part 12, in order to control the aiming point of the working part 12, help to improve the efficiency of stone crushing, reduce the risk of injuring human organs. It can be understood that the meridional image plane 2211 of the camera 221 is perpendicular to the sagittal image plane of the camera 221, that is, the horizontal image plane of the camera 221, and the meridional image plane 2211 of the camera 221 forms the visual central axis 2210 of the camera 221 in the picture taken by the camera 221.

[0074] In addition, the working part 12 mounted on the mirror tube 11 in the present application can extend the tip 21 forward to perform corresponding operations. For example, as shown in Figure 4 and Figure 12 The working part 12 can be but not limited to an optical fiber 121, so as to perform stone crushing operation by emitting laser through the optical fiber 121. Those skilled in the art can understand that the type of the working part 12 can be different with the different application scenarios of the optical fiber visible surgery ureteroscope 1, and the operator can choose according to the needs.

[0075] More specifically, as shown in Figures 5 to 7 The central axis 2121 of the working hole 212 of the tip 21 is in the meridional image plane 2211 of the camera 221, so that the working part 12 extending from the working hole 212 can extend in the meridional image plane 2211 of the camera 221, at this time, the image of the working part 12 coincides with the visual central axis 2210 of the camera 221, that is, the head image of the working part 12 must be on the visual central axis 2210 of the camera 221. Of course, in other examples of the present application, the central axis 2121 of the working hole 212 of the tip 21 can also intersect the meridional image plane 2211 of the camera 221, so as to ensure that the working part 12 extending from the working hole 212 can extend to the meridional image plane 2211 of the camera 221, and then make the head image of the working part 12 on the visual central axis 2210 of the camera 221.

[0076] Preferably, the central axis 2121 of the working hole 212 of the tip portion 21 intersects the optical axis 2212 of the camera 221, and the working component 12 extending from the working hole 212 extends to the optical axis 2212 of the camera 221, so that the head image of the working component 12 extending from the working hole 212 will be in the center position on the visual central axis 2210 of the camera 221, that is, the head of the working component 12 extending from the working hole 212 is in the front area of the camera 221, which facilitates the control of the aiming point of the working component 12 at any time, and reduces the risk of mistakenly injuring the intrarenal tissue.

[0077] It is worth noting that, since the ureteroscope tip 20 will be inserted into the human body when the optical fiber visual surgery ureteroscope 1 is used for diagnosis and treatment, that is, the ureteroscope tip 20 will be in a lightless environment, therefore, as shown in Figure 4 and Figure 5 , the image acquisition device 22 usually needs to further include at least one light source 222 in order to acquire images, wherein the light source 222 is used to emit light to irradiate the object to be photographed, such as the intrarenal cavity or the suction opening 2110, and the camera 221 is used to receive the light reflected back by the object to be photographed, so as to photograph the image of the object to be photographed, so that the photographed image data is transmitted to the outside of the body to be displayed in the display, facilitating the observation of the inside of the body by the doctor and other personnel.

[0078] Exemplarily, as shown in Figure 4 and Figure 8 , the camera 221 and the light source 222 are both mounted on 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 adjacently mounted on 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.

[0079] In detail, the light source 222 can be but is not limited to an LED or a cold light source, and the number of the light source 222 can be one or more, and in addition, the light source 222 can be located on one side or both sides of the camera 221, which can be configured as needed and space, which will not be repeated here. It can be understood that the camera 221 can be but is 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 acquire image information.

[0080] It can be understood that the ureteroscope 1 of the present application can have up, down, left and right directions in addition to front and back directions. For example, in an example of the present application, as shown in Figure 4 and Figure 5 the camera 221 can be located above the working part 12 extending from the working hole 212, so that the camera 221 is upper and the working hole 212 is lower, and the image of the working part 12 extending from the working hole 212 is in the lower part of the display screen. Of course, in other examples of the present application, as shown in Figure 13 the camera 221 can also be located below the working part 12 extending from the working hole 212, so that the camera 221 is lower and the working hole 212 is upper, and the image of the working part 12 extending from the working hole 212 is in the upper part of the display screen. It can be understood that the up, down, left and right directions mentioned in the present application are defined according to the shooting screen of the camera 221 in normal position, i.e. the up, down, left and right directions mentioned in the present application correspond to the upper, lower, left and right directions of the camera 221 in normal position, respectively.

[0081] For example, according to the above embodiments of the present application, as shown in Figure 6 and Figure 7 the mirror body 10 further comprises a working channel 102 extending axially in the mirror tube 11 for accommodating the working part 12, wherein the working hole 212 of the tip part 21 communicates with the working channel 102, and the working hole 212 extends obliquely forward from the working channel 102, so that the working part 12 accommodated in the working channel 102 can pass through the working hole 212 to extend forward from the tip part 21 to be within the field of view of the camera 221. It can be understood that the working part 12 after entering the working channel 102 and the working hole 212 is movable, so that by pushing and pulling the working part 12, the length of the working part 12 extending from the working hole 212 can be increased or decreased, facilitating the impact of stones at different positions in the renal pelvis. In other words, the optical fiber 121 can be movably mounted in the working channel 102, so that by pushing and pulling the optical fiber 121, the optical fiber 121 can extend from the working hole 212 or retract.

[0082] In addition, as shown in Figure 6 and Figure 7As shown, the mirror body 10 can further include an aspiration channel 101 extending axially within the mirror tube 11 for draining liquid or debris. The tip portion 21 can have a camera end face 2101 and an aspiration end face 2102 located in front of the camera end face 2101, wherein the tip portion 21 further includes an aspiration hole 211 for communicating the aspiration channel 101 of the mirror body 10, and the aspiration hole 211 extends from a rear end face of the tip portion 21 to the front to form an aspiration opening 2110 at the aspiration end face 2102. The camera 221 and the light source 222 of the image acquisition device 22 are both mounted on the camera end face 2101 of the tip portion 21, so that the aspiration opening 2110 of the aspiration hole 211 of the tip portion 21 is within the field of view of the camera 221. It can be understood that the camera end face 2101 and the aspiration end face 2102 together form a front end face of the tip portion 21, and the aspiration hole 211 extends through from the rear end face of the tip portion 21 to the front end face of the tip portion 21.

[0083] It is worth noting that, since the camera 221 and the aspiration opening 2110 of the aspiration hole 211 in the ureteroscope tip 20 are respectively located at the camera end face 2101 and the aspiration end face 2102 of the tip portion 21, and the aspiration end face 2102 is located in front of the camera end face 2101, the aspiration opening 2110 of the aspiration hole 211 is in front of the camera 221, achieving the technical effect of aspiration in front and camera behind, which facilitates to ensure that the aspiration opening 2110 of the aspiration hole 211 is partially or entirely within the field of view of the camera 221, so as to observe the working state of the aspiration opening 2110 in real time, such as whether the debris enters the aspiration opening 2110 or whether the aspiration opening 2110 is blocked, etc., which helps the doctor to make accurate judgment on the operation state in time.

[0084] In detail, as shown in FIG. 2, the tip portion 21 of the ureteroscope tip 20 can have a front end face 2100, and the front end face 2100 can be formed by the camera end face 2101 and the aspiration end face 2102 of the tip portion 21. Figure 4 and Figure 6As shown, the suction end surface 2102 of the tip portion 21 extends obliquely forward from the imaging end surface 2101 of the tip portion 21, so that the image collection device 22 mounted on the imaging end surface 2101 is located at the rear, and the suction opening 2110 formed on the suction end surface 2102 is located at the front, and the suction opening 2110 is in the form of a bevel, so as to facilitate ensuring that the suction opening 2110 is partially or entirely within the field of view of the image collection 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 bevel. Of course, in other examples of the present application, the suction end surface 2102 of the tip portion 21 can also be implemented as a flat surface, and at this time, the imaging end surface 2101 of the tip portion 21 can be located at the notch of the suction end surface 2102 or the suction hole 211, so that the image collection device 22 can still collect images of the suction opening 2110.

[0085] Preferably, the suction end surface 2102 of the tip portion 21 includes a concave section end surface 21021 extending arcuately inward from the imaging end surface 2101, so as to facilitate ensuring that the suction opening 2110 located on the suction end surface 2102 falls within the field of view of the image collection device 22, while avoiding the concave section end surface 21021 shielding the field of view of the imaging end surface 2101. At the same time, the size of the suction opening 2110 of the tip portion 21 can rapidly expand on the concave section end surface 21021 to the maximum inner diameter of the suction passage 101, so as to facilitate avoiding that larger stones block the suction opening 2110.

[0086] More preferably, the suction end surface 2102 of the tip portion 21 further includes a convex section end surface 21022 extending arcuately outward from the concave section end surface 21021, so as to make the tip portion 21 have a blunt body structure, and avoid making the tip portion 21 form a sharp head, thereby facilitating preventing the tip portion 21 from damaging human organs.

[0087] 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 imaging end surface 2101, so that the concave section end surface 21021 of the suction end surface 2102 smoothly extends from the imaging end surface 2101 to the convex section end surface 21022, so as to ensure that the tip portion 21 has a smooth end surface, and further avoid the tip portion 21 damaging human organs.

[0088] Exemplarily, the field of view angle of the camera 221 can be, but is not limited to, implemented as 120°. According to the above arrangement of the present application, the optical fiber visual surgery ureteroscope 1 of the present application can visualize the ureteroscope tip 20 without increasing the field of view angle of the camera 221, which helps to observe whether the suction opening 2110 of the tip portion 21 is blocked or whether the stones enter the suction opening 2110. Of course, in other examples of the present application, the field of view angle of the camera 221 can also be implemented as other angles.

[0089] Preferably, as shown in Figure 6 and Figure 7 , the optical axis 2212 of the camera 221 is inclined to the central axis 2111 of the suction hole 211, and the optical axis 2212 of the camera 221 intersects the central axis 2121 of the working hole 212, that is, the shooting direction of the camera 221 is different from the axial direction of the suction hole 211, so that the camera 221 can always shoot the head of the working component 12 extending from the working hole 212 while shooting the suction opening 2110 of the suction hole 211, and the image of the head of the working component 12 can always be located at the center of the visual central axis 2210 of the camera 221.

[0090] It is worth noting that the camera end face 2101 and the suction end face 2102 of the tip portion 21 in the optical fiber visual surgery ureteroscope 1 of the present application are oppositely arranged, that is, the relative positions of the camera end face 2101 and the suction end face 2102 can be not only front and back, but also up and down, for example, in an example of the present application, as shown in Figure 5 and Figure 12 , the camera end face 2101 can be located above the suction end face 2102, that is, the suction end face 2102 extends forward and downward from the camera end face 2101, so that the image acquisition device 22 is placed on top, and the suction opening 2110 is placed below, at this time the image of the suction opening 2110 is in the lower part of the display screen. Of course, in other examples of the present application, as shown in Figure 13 , the camera end face 2101 can also be located below the suction end face 2102, that is, the suction end face 2102 extends forward and upward from the camera end face 2101, so that the image acquisition device 22 is placed below, and the suction opening 2110 is placed above, at this time the image of the suction opening 2110 is in the upper part of the display screen.

[0091] Preferably, as shown in Figures 4 to 6As shown, the working opening 2120 of the working hole 212 of the tip portion 21 is directed towards 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 be extended out of the suction opening 2110 of the tip portion 21, which helps to ensure that the extended part of the optical fiber 121 can be within the field of view of the image acquisition device 22, and thus facilitates the observation of the position and state of the extended part of the optical fiber 121.

[0092] It can be understood that, since the working hole 212 of the tip portion 21 extends forwardly and obliquely, and the working opening 2120 of the working hole 212 corresponds to the suction opening 2110 of the suction hole 211 of the tip portion 21, the optical fiber 121 passing through the working hole 212 can be extended forwardly and obliquely out of the suction opening 2110 of the tip portion 21. In this way, when the optical fiber 121 is operated to extend out of the suction opening 2110 of the suction hole 211, the laser light emitted via the optical fiber 121 can hit the stones in the human organ to perform the lithotripsy operation; and when the optical fiber 121 is operated to retract into the suction opening 2110 of the suction hole 211, the laser light emitted via the optical fiber 121 is released in the suction hole 211, at which time if the suction hole 211 is blocked by the stones, the released holmium laser light can hit the blocking stones to achieve the effect of unblocking the suction hole 211.

[0093] Preferably, as shown in Figure 6 and Figure 7 the working hole 212 of the tip portion 21 extends forwardly and obliquely 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 inclined hole relative to the suction hole 211, so that the optical fiber 121 passing through the working hole 212 can be extended out of the inner wall of the suction hole 211 to avoid the optical fiber 121 hindering the stones or fluid entering the suction passage 101 through the suction hole 211 and being discharged.

[0094] More preferably, the working hole 212 of the tip portion 21 extends obliquely towards the central region of the suction opening 2110 of the tip portion 21, so that the optical fiber 121 passing through the working hole 212 can be extended out of the central region of the suction opening 2110.

[0095] Exemplarily, in the above embodiments of the present application, as shown in Figures 5 to 7As shown, the working hole 212 of the tip portion 21 can extend obliquely from top to bottom, so that the optical fiber 121 passing through the working hole 212 extends obliquely downward from the upper side of the suction hole 211 to the suction opening 2110, and the optical fiber 121 extending from the suction opening 2110 extends in the tangential image plane 2211 of the camera 221, so 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 the tissue obstruction at the turning of the renal pelvis cavity does not occur, not only the stone can be observed, but also the hitting position of the optical fiber 121 can be seen.

[0096] In particular, the central axis 2121 of the working hole 212 intersects the optical axis 2212 of the camera 221, and the optical fiber 121 extending from the working hole 212 extends to the optical axis 2212 of the camera 221, so that the head image of the optical fiber 121 is at the center position of the visual central axis 2210 of the camera 221.

[0097] It is worth noting that, Figures 14 to 16 A first variant of the optical fiber visible ureteroscope 1 according to the above embodiment of the application is shown, in which the working hole 212 of the tip portion 21 can extend obliquely from bottom to top, so that the optical fiber 121 passing through the working hole 212 extends obliquely upward from the lower side of the suction hole 211 to the suction opening 2110. At this time, the central axis 2121 of the working hole 212 can also be in the tangential image plane 2211 of the camera 221, and even if the optical axis 2212 of the camera 221 is parallel to the central axis 2111 of the suction hole 211, the central axis 2121 of the working hole 212 can intersect the optical axis 2212 of the camera 221, so that the head of the optical fiber 121 passing through the working hole 212 is located in the visual center of the camera 221, that is, the head image of the optical fiber 121 is at the center position of the visual central axis 2210 of the camera 221.

[0098] Figures 17 to 19A second variation of the ureteroscope 1 according to the above embodiment of the present application is shown, in which the working hole 212 of the tip portion 21 can also extend obliquely from left to right, such that the optical fiber 121 passing through the working hole 212 extends obliquely out of the suction opening 2110 from the left side of the suction hole 211. At this time, although the central axis 2121 of the working hole 212 is not within the meridional image plane 2211 of the camera 221, the central axis 2121 of the working hole 212 can still intersect the optical axis 2212 of the camera 221, such that the optical fiber 121 passing out of the working hole 212 can extend to the visual center of the camera 221, i.e. the head image of the optical fiber 121 is still at the central position of the visual central axis 2210 of the camera 221.

[0099] Similarly, Figure 20 and Figure 22 A third variation of the ureteroscope 1 according to the above embodiment of the present application is shown, in which the working hole 212 of the tip portion 21 can also extend obliquely from right to left, such that the optical fiber 121 passing through the working hole 212 extends obliquely out of the suction opening 2110 from the right side of the suction hole 211. At this time, although the central axis 2121 of the working hole 212 is not within the meridional image plane 2211 of the camera 221, the central axis 2121 of the working hole 212 can still intersect the optical axis 2212 of the camera 221, such that the optical fiber 121 passing out of the working hole 212 can extend to the visual center of the camera 221, i.e. the head image of the optical fiber 121 is still at the central position of the visual central axis 2210 of the camera 221.

[0100] It is worth noting that, in the above embodiment and the above first variation of the present application, the optical fiber 121 extending out of the working hole 212 extends obliquely to the optical axis 2212 of the camera 221 in the up-down direction before being sucked dry. In the above second variation and the above third variation of the present application, the optical fiber 121 extending out of the working hole 212 extends obliquely to the optical axis 2212 of the camera 221 in the left-right direction before being sucked dry.

[0101] In addition, according to the above embodiment of the present application, as Figure 6 , Figure 7 and Figure 10As shown, the suction passage 101 and the working passage 102 in the mirror body 10 can be independent of each other, that is, the suction passage 101 and the working passage 102 respectively extend between the front end and the rear end of the mirror tube 11 of the mirror body 10. It can be understood that, since the suction passage 101 and the working passage 102 are independent of each other, the working component 12 (such as the optical fiber 121) installed in the working passage 102 will not enter the suction passage 101, so as to prevent the working component 12 from interfering with the movement of fluid or stones in the suction passage 101, and to avoid congestion in the suction passage 101.

[0102] It is worth mentioning that, in the above-mentioned variant examples of the present application, as shown in Figure 15 , Figure 18 and Figure 21 , the suction passage 101 and the working passage 102 in the mirror body 10 can also be communicated, that is, the suction passage 101 and the working passage 102 can be implemented as the same passage, but since the working hole 212 extends obliquely from the side wall of the suction hole 211 of the front end portion 21 to the inside, the optical fiber 121 passing through the working hole 212 will extend along the inner wall of the suction passage 101, that is, the optical fiber 121 first extends along the inner wall of the suction passage 101, and then extends obliquely out of the suction opening 2110 of the suction hole 211 through the working hole 212, at this time the optical fiber 121 can still avoid interfering with the movement of fluid or stones in the suction passage 101 to a certain extent, and avoid congestion in the suction passage 101. It can be understood that, when the suction passage 101 and the working passage 102 of the mirror body 10 are the same passage, the structure of the mirror body 10 will be simplified to the maximum, which helps to reduce the manufacturing difficulty and manufacturing cost of the mirror body 10; at the same time, once the stones in the suction passage 101 of the mirror body 10 are blocked, the optical fiber 121 can be pulled so that the end of the optical fiber 121 is at the blocked stones in the suction passage 101, so that the laser emitted by the optical fiber 121 hits the blocked stones, so as to dredge the suction passage 101.

[0103] According to the above-mentioned embodiments of the present application, as shown in Figure 4 and Figure 9As shown, the scope of the present application is to provide a fiber-optic visual surgery ureteroscope 1, which can further comprise a perfusion channel 103 for transmitting perfusion liquid (such as water or the like) and extending axially in the scope tube 11, wherein the tip portion 21 of the ureteroscope tip 20 further comprises a perfusion hole 213 in communication with the perfusion channel 103 for discharging the perfusion liquid transmitted via the perfusion channel 103 from the tip portion 21 to perfuse into the human body. In this way, when the fiber-optic visual surgery ureteroscope 1 is operated, after the fiber-optic visual surgery ureteroscope 1 is inserted into the kidney, the perfusion liquid such as water or the like flows to the perfusion hole 213 of the tip portion 21 via the perfusion channel 103, and then enters the kidney through the perfusion hole 213 to achieve perfusion operation; the working component 12 such as the optical fiber 121 extends from the working channel 102 to the working hole 212 to extend the suction opening 2110 of the suction hole 211 to perform lithotripsy operation; at the same time, the excess perfusion liquid and stones can flow from the suction hole 211 to the suction channel 101 to be discharged out of the body.

[0104] Preferably, as shown in Figure 4 , Figure 9 and Figure 12 , the perfusion hole 213 of the tip portion 21 extends from the rear end face of the tip portion 21 to the outer peripheral side face 2103 of the tip portion 21 to form one or more perfusion openings 2130 at the outer peripheral side face 2103 of the tip portion 21, so that the perfusion liquid flows outward from the outer peripheral side face 2103 of the tip portion 21 via the perfusion openings 2130 of the perfusion hole 213 to form a controllable and orderly fluid circulation in front of the tip portion 21, which helps to drive the stones to the suction opening 2110 for efficient suction. It can be understood that according to the law of conservation of momentum in fluid mechanics and the principle of negative pressure suction, the kinetic energy possessed by the perfusion liquid during high-speed flow is used to push the heavy stone fragments deposited at the bottom of the renal pelvis to change direction when encountering the obstruction of the renal pelvis inner wall, and then move upward along the renal pelvis inner wall, when reaching the front of the suction opening 2110, the pressure near the suction opening 2110 is lower, and the perfusion liquid is forced to flow to the suction opening 2110, thereby driving the stones into the suction opening 211 and then being discharged out of the body. The continuous perfusion and suction during this process can make the perfusion liquid form a nearly semicircular continuous circulation track (vortex) between the perfusion opening 2130 and the suction opening 2110, and by adjusting the flow rate and suction force, the diameter of the semicircle or the movement track can be controlled to achieve targeted and controllable suction of the stones, thereby greatly improving the efficiency of stone removal.

[0105] In addition, since the area of the outer circumferential 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 area of the end surface of the tip portion 21, so that the effective area of the perfusion openings 2130 of the perfusion holes 213 is greatly increased, which helps to form a larger perfusion flow under a relatively low perfusion pressure, and to form a larger suction flow in the suction hole 211 under the same negative pressure, so as to achieve an optimal perfusion-suction ratio and enhance the stone removal efficiency.

[0106] More preferably, as shown in Figure 9 and Figure 10 , the perfusion channel 103 of the mirror body 10 has a special-shaped 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, which helps to increase the perfusion flow. Exemplarily, the perfusion channel 103 of the mirror body 10 can have a ring-shaped cross-sectional structure, so that the perfusion channel 103 is wrapped around the suction channel 101. It is worth noting that, as shown in Figure 10 , the ring in the ring-shaped cross-sectional structure can also refer to a notch ring, i.e., the suction channel 101 is partially surrounded by the perfusion channel 103; of course, in a variant example of the present application, as shown in Figure 11 , the ring in the ring-shaped cross-sectional structure can refer to a complete ring, i.e., the suction channel 101 is completely surrounded by the perfusion channel 103.

[0107] Optionally, as shown in Figure 10 , 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 without increasing the outer diameter of the mirror tube 11 of the mirror body 10, thereby reducing the risk of the suction channel 101 being blocked by stones. In other words, the suction channel 101 of the mirror body 10 can have a circular cross-section or an elliptical cross-section, and the perfusion channel 103 of the mirror body 10 can have a notch ring-shaped cross-section to be partially wrapped around the suction channel 101 and form a notch around the suction channel 101 for arranging the working channel 102, so that the perfusion channel 103 and the working channel 102 jointly surround the suction channel 101.

[0108] It is worth noting that, in the above examples of the present application, as shown in Figure 9 and Figure 10 , the working channel 102 and the perfusion channel 103 of the mirror body 10 can be independent of each other; of course, in other examples of the present application, as shown inFigure 11 As shown, the working channel 102 and the perfusion channel 103 of the scope body 10 can also be in communication with each other, i.e. the working channel 102 and the perfusion channel 103 of the scope body 10 are in communication 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 optical fiber visual surgery ureteroscope 1.

[0109] According to the above embodiments of the present application, as Figure 3 As shown, the scope body 10 of the optical fiber visual surgery ureteroscope 1 can further include an operation part 12 arranged at the rear end of the scope tube 11, and the scope tube 11 can include an insertion part 111 extending forward from the operation part 12 and a bendable part 112 extending forward from the insertion part 111, wherein the ureteroscope tip 20 is arranged at the bendable part 112 of the scope tube 11, and the bendable part 112 of the scope tube 11 can be controlled by the operation part 12 to bend or straighten, so that the ureteroscope tip 20 approaches the target position, such as the stone position in the renal pelvis, etc.

[0110] In addition, as Figure 3 As shown, the operation part 12 of the scope body 10 can include a suction interface 1201 in communication with the suction channel 101, a working interface 1202 in communication with the working channel 102, and a perfusion interface 1203 in communication with the perfusion channel 103, wherein the suction interface 1201 of the operation part 12 is adapted to connect a suction device to move water and stones from the suction channel 101 by the suction device for discharge; wherein the working interface 1202 is used to insert the working part 12, so that the working part 12 is inserted into the working channel 102 via the working interface 1202; wherein the perfusion interface 1203 is adapted to connect a perfusion device to inject perfusion fluid into the perfusion channel 103 by the perfusion device.

[0111] In particular, as Figure 3 As shown, the operation part 12 of the scope body 10 can further include an information interface 1204 communicatively connected with the image acquisition device 22, wherein the information interface 1204 is adapted to connect a terminal device such as a display screen, etc. to communicatively connect the image acquisition device 22 and the terminal device, i.e. the information acquired via the image acquisition device 22 can be processed or displayed through the terminal device.

[0112] Those skilled in the art will understand that the embodiments of the application described above and shown in the drawings are merely illustrative and that numerous other modifications and configurations can be devised without departing from the principles of the present application. The scope of the application is best defined by the appended claims.

Claims

1. A ureteroscope for fiber optic visual surgery, characterized in that, The ureteroscope comprises: a scope body, wherein the scope body comprises a scope tube and a working component mounted to the scope tube; and a ureteroscope tip configured to the scope body, wherein the ureteroscope tip comprises: a tip portion disposed at a front end of the scope tube, wherein the tip portion comprises a working hole for passing the working component, and the working component is extended forwardly out of the tip portion through the working hole; and an image acquisition device comprising a camera mounted to the tip portion, and the working component extended forwardly to a meridional image plane of the camera from the working hole, so that a head image of the working component is in a visual central axis of the camera; the scope body further comprises a working channel axially extending in the scope tube for passing the working component, wherein the working hole of the tip portion is communicated with the working channel of the scope body, so that the working component passed in the working channel is extended forwardly out of the tip portion through the working hole; the scope body further comprises an aspiration channel axially extending in the scope tube, and the tip portion has an imaging end face and an aspiration end face located in front of the imaging end face, wherein the tip portion further comprises an aspiration hole communicated with the aspiration channel, wherein the aspiration hole extends forwardly from a rear end face of the tip portion to form an aspiration opening at the aspiration end face, and the camera is mounted to the imaging end face of the tip portion; the aspiration end face of the tip portion extends forwardly obliquely from the imaging end face; a working opening of the working hole of the tip portion is directed to the aspiration opening of the aspiration hole of the tip portion; the working hole of the tip portion extends forwardly and obliquely inwardly from the rear end face of the tip portion to an inner wall face of the aspiration hole to form the working opening of the working hole at the inner wall face of the aspiration hole; the working component is an optical fiber for emitting laser for lithotripsy; the scope body comprises an information interface communicatively connected with the image acquisition device, and the information interface is adapted to connect a terminal device to communicatively connect the image acquisition device and the terminal device. a central axis of the working hole of the tip portion intersects the meridional image plane of the camera.

2. The fiber optic visual surgical ureteroscope of claim 1, wherein, the central axis of the working hole of the tip portion is in the meridional image plane of the camera.

3. The fiber optic visual surgical ureteroscope of claim 1, wherein, the central axis of the working hole intersects an optical axis of the camera.

4. The fiber optic visualization ureteroscope of either of claims 2 or 3, wherein, the working component extended forwardly from the working hole obliquely in a vertical direction to the optical axis of the camera.

5. The fiber optic visual surgical ureteroscope of claim 3, wherein, the working component extended forwardly from the working hole obliquely in a horizontal direction to the optical axis of the camera.

6. The fiber optic visual surgical ureteroscope of claim 2, wherein, the optical axis of the camera is deviated or parallel to a central axis of the aspiration hole.

7. The fiber optic visual surgical ureteroscope of claim 1, wherein, the image acquisition device further comprises at least one light source, and the light source and the camera are adjacently mounted to the tip portion.

8. The fiber optic visualization ureteroscope of any of claims 1-3, wherein, ​ 9. The fiber optic visual surgical ureteroscope of claim 1, wherein, The mirror body further includes an irrigation channel extending axially within the mirror tube, and the tip portion further includes an irrigation hole communicating with the irrigation channel, wherein the irrigation hole extends from a rear end surface of the tip portion to an outer peripheral side surface of the tip portion to form one or more irrigation openings at the outer peripheral side surface of the tip portion.

10. The fiber optic visual surgical ureteroscope of claim 9, wherein, The irrigation channel of the mirror body has a profiled structure, and the irrigation channel is wrapped around the suction channel.

11. The fiber optic visual surgical ureteroscope of claim 10, wherein, The irrigation channel and the working channel of the mirror body communicate with each other to form a complete annular channel around the suction channel.

Images