CN116919316A

CN116919316A - Endoscope tube end, endoscope tube and endoscope

Info

Publication number: CN116919316A
Application number: CN202311074289.7A
Authority: CN
Inventors: 刘三强; 魏信鑫; 张洋; 彭东; 代青浩; 王秀琴; 王鉴哲
Original assignee: Hangzhou Weixin Medical Technology Co ltd
Current assignee: Hangzhou Weixin Medical Technology Co ltd
Priority date: 2023-08-23
Filing date: 2023-08-23
Publication date: 2023-10-24

Abstract

The application provides a lens tube end, a lens tube and an endoscope, wherein the lens tube end is used for being installed at the far end of a lens tube main body, the lens tube main body comprises an inner tube and an outer tube sleeved outside the inner tube, an annular channel is arranged between the inner tube and the outer tube, and the lens tube end comprises: the end head main body is provided with a first channel, a second channel and a mounting hole, the first channel and the second channel penetrate through the two axial ends of the end head main body, the first channel is used for being communicated with the inner pipe, and the second channel is used for being communicated with the annular space channel; the mounting hole extends from the front end face of the end head main body to the rear end face of the end head main body; auxiliary equipment is arranged in the mounting hole; the front end face of the end head main body extends out of the front end face of the end head main body, the spoiler bends towards the center of the front end face of the end head main body, and the spoiler shields at least part of ports of the second channel. The lens tube end has good flushing effect and good cleaning effect on the camera.

Description

Endoscope tube end, endoscope tube and endoscope

Technical Field

The application relates to the technical field of medical instruments, in particular to a lens tube end, a lens tube and an endoscope.

Background

Endoscopes such as hysteroscopes, cystoscopes, gastroscopes, colposcopes, bronchoscopes, laparoscopes, colonoscopes, laparoscopes and the like are sent into a human body from outside the body through a natural cavity of the human body, and certain parts in the human body are inspected.

The endoscope generally includes a scope tube and an operating handle, the scope tube is mounted to the operating handle, and a camera is generally mounted to an end of the scope tube remote from the operating handle. When the endoscope is used, a doctor holds the operating handle, stretches the endoscope tube into a target part in the body, observes the condition of the target part through the camera, transmits signals acquired by the camera to external equipment electrically connected with the endoscope, and displays images of the target part by using the external equipment so as to help the doctor to know and judge the condition of the target part.

However, in the existing endoscope, the scouring effect of the lens tube is poor, and the cleaning of the camera is inconvenient.

Disclosure of Invention

The application provides a lens tube end, a lens tube and an endoscope, wherein the lens tube end has good flushing effect and good cleaning effect on a camera.

A first aspect of the present application provides a scope head for mounting at a distal end of a scope body, the scope body including an inner tube and an outer tube sleeved outside the inner tube, an annular passage being provided between the inner tube and the outer tube, the scope head comprising:

the end head main body is provided with a first channel, a second channel and a mounting hole, the first channel and the second channel penetrate through the two axial ends of the end head main body, the first channel is used for being communicated with the inner pipe, and the second channel is used for being communicated with the annular space channel; the mounting hole extends from the front end face of the end head main body to the rear end face of the end head main body;

Auxiliary equipment is arranged in the mounting hole;

the front end face of the end head main body extends out of the front end face of the end head main body, the spoiler bends towards the center of the front end face of the end head main body, and the spoiler shields at least part of ports of the second channel.

In one possible embodiment, the spoiler is located at a side edge of the second passage, which is close to the port, in a radial direction of the front end surface of the tip body.

In one possible embodiment, the inner wall surface of the spoiler extends along the inner wall of the second channel on one side close to the edge of the tip body; the inner wall surface of the spoiler is a side wall surface of the spoiler facing the front end surface of the end head main body.

In one possible embodiment, the spoiler completely obstructs the port of the second channel.

In one possible embodiment, from the connection end of the spoiler to the free end of the spoiler, the spoiler comprises a straight section and an arc section connected in sequence, the straight section extending along the extension direction of the tip body, the arc section being curved towards the center of the front end face of the tip body;

the connecting end of the spoiler is one end of the spoiler connected to the front end face of the end head main body, and the free end of the spoiler is one end of the spoiler far away from the end head main body.

In one possible embodiment, the radius of the arcuate segment is 0.6mm to 1.0mm.

In one possible embodiment, the arc section is connected from one end of the arc section to the other end of the arc section, the width of the arc section gradually increases, and the arc section is transited from the arcs on both sides of the one end of the arc section.

In one possible embodiment, the difference between the maximum width of the arcuate segment and the width of the straight segment is 0.2mm to 0.5mm.

In one possible embodiment, the free end of the spoiler is inclined in a direction away from the front end face of the head body, and the angle between the direction of extension of the free end of the spoiler and the front end face of the head body is 20 ° -30 °.

In one possible embodiment, the distance between the free end of the spoiler and the central axis of the head body is 0.8mm to 1.2mm.

In one possible embodiment, the distance between the free end of the spoiler and the front end surface of the tip body is 1.5mm-2.5mm.

In one possible embodiment, the spoiler has a thickness of 0.4mm-0.6mm.

In one possible embodiment, from one end of the tip body towards the scope body to the other end of the tip body, the tip body comprises a first section and a second section which are sequentially arranged, the first section extends along the axial direction of the scope body, and the second section has an included angle with the first section.

In one possible embodiment, the second section is inclined to a side where the second channel is located, the first channel extends along an axial direction of the lens tube body, and a plane where a port of the first channel is located is parallel to an outer wall of the side where the second channel is located.

In one possible embodiment, the lens barrel head further comprises:

the valve comprises a connecting section and a movable section which are sequentially arranged, wherein the connecting section is connected to the outer side wall of one side where the first channel is located, and the movable section is movably arranged at a port of the first channel in a blocking manner and is used for opening or blocking the port of the first channel.

In one possible embodiment, the lens barrel head further comprises:

the elastic end sleeve is sleeved outside the end main body and clings to the valve.

A second aspect of the application provides a scope comprising a scope body and a scope tip as hereinbefore described, the scope tip being mounted at the distal end of the scope body.

A third aspect of the application provides an endoscope comprising an operating handle and a scope as described above, the proximal end of the scope being mounted to the operating handle and the distal end of the scope projecting away from the operating handle.

The application provides a lens tube end, a lens tube and an endoscope. The front end face of the end head main body is provided with the turbulence part, the turbulence part bends towards the center of the front end face of the end head main body, the turbulence part shields at least part of ports of the second channel in the end head main body, and the turbulence part can change the flow direction of liquid sprayed from the second channel so that the liquid is sprayed towards the front end face of the end head main body. Thus, the liquid can form turbulence in the target part in the body, so that the liquid can more quickly and comprehensively wash the target part, the washing effect of the end of the lens tube is improved, the liquid can wash and clean the surface of auxiliary equipment (such as a camera) and the working performance of the auxiliary equipment is ensured. Thereby improving the workability of the endoscope.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application. Other figures may be derived from these figures without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic view of an endoscope according to an embodiment of the present application;

FIG. 2 is a partial block diagram of a lens tube according to an embodiment of the present application;

FIG. 3 is a front view of the mirror tube of FIG. 2;

FIG. 4 is an exploded view of the mirror tube of FIG. 2;

FIG. 5 is a top view of the mirror tube of FIG. 2;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

FIG. 7 is a schematic view of a structure of a lens tube end according to an embodiment of the present application;

FIG. 8 is a schematic structural view of a tip body according to an embodiment of the present application;

FIG. 9 is a cross-sectional view of the tip body of FIG. 8 taken along line A-A of FIG. 5;

FIG. 10 is a left side view of the mirror tube of FIG. 2;

FIG. 11 is an enlarged view of a portion of FIG. 6 at A;

FIG. 12 is a block diagram of another view of the end of the mirror tube of FIG. 7;

FIG. 13 is a front view of a lens barrel head according to an embodiment of the present application;

FIG. 14 is a semi-sectional view of the endoscope tip of FIG. 13;

FIG. 15 is a bottom view of the lens barrel head of FIG. 13;

FIG. 16 is an exploded view of the end of the mirror tube of FIG. 7;

fig. 17 is a schematic structural view of a left shell of the tip body according to an embodiment of the present application;

fig. 18 is a schematic structural view of a right shell of the tip body according to an embodiment of the present application.

Detailed Description

Along with the rapid development of medical technology, endoscopes are also increasingly widely applied in the medical field, and endoscopes are commonly used in clinical medicine to inspect target sites of internal cavities of human bodies.

The endoscope generally includes a scope tube and an operation handle, the scope tube is mounted on the operation handle, and a camera or the like is generally mounted at an end of the scope tube away from the operation handle. In operation, a doctor holds the operating handle of the endoscope, and stretches the endoscope tube from the natural cavity of the human body to the target part in the human body so as to observe the condition of the target part.

However, the endoscope in the related art has poor flushing effect of the endoscope tube on the target site in the body, and is inconvenient to clean the camera.

In view of this, an embodiment of the present application provides a scope tip, a scope, and an endoscope, where the scope tip includes a tip body and an auxiliary device, and the auxiliary device is installed in an installation hole of the tip body. The front end face of the end head main body is provided with the turbulence part, the turbulence part bends towards the center of the front end face of the end head main body, the turbulence part shields at least part of ports of the second channel in the end head main body, and the turbulence part can change the flow direction of liquid sprayed from the second channel so that the liquid is sprayed towards the front end face of the end head main body. Thus, the liquid can form turbulence in the target part in the body, so that the liquid can more quickly and comprehensively wash the target part, the washing effect of the end of the lens tube is improved, the liquid can wash and clean the surface of auxiliary equipment (such as a camera) and the working performance of the auxiliary equipment is ensured. Thereby improving the workability of the endoscope.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Fig. 1 is a schematic view of an endoscope according to an embodiment of the present application. Referring to fig. 1, an embodiment of the present application provides an endoscope 10, wherein the endoscope 10 includes a scope tube 100 and an operation handle 200, the two axial ends of the scope tube 100 are respectively a proximal end and a distal end, the proximal end of the scope tube 100 is installed in the operation handle 200, and the distal end of the scope tube 100 extends in a direction away from the operation handle 200. The operating handle 200 is used for an operator (e.g., doctor) to hold to manipulate the endoscope 10, and the scope 100 is used for extending into a target site in a human body to observe the condition of the target site.

The distal end of the lens tube 100 is typically provided with a camera (not shown), a light source (not shown), and the like, and the camera is used to observe an image of a target site in the body, and the light source is used to illuminate the target site so that the camera can observe a clear image. The operating handle 200 is internally provided with a liquid path component (not shown in the figure) and a circuit component (not shown in the figure), the liquid path component is used for realizing liquid inlet and liquid outlet in the lens tube 100 so as to meet the requirements in the operation process, and the circuit component is used for controlling devices such as a camera, a light source and the like at the far end of the lens tube 100 to work and controlling parameters such as the flow rate, the flow rate and the like of liquid flowing through the liquid path component so as to realize the purposes of observing local fine tissues in a body and sucking the liquid.

In order to perform the surgical operation, the scope tube 100 is required to be inserted into the body, the operation handle 200 is required to be held by an operator, and may contact the epidermis or internal tissues of the human body, and the fluid introduced into or discharged from the body passes through a fluid path member installed in the operation handle 200, and a circuit member installed in the operation handle 200 is required to be connected to the distal end of the scope tube 100. Thus, the present embodiment can use the endoscope 10 constituted by the scope 100 and the operation handle 200 as a disposable portion, in other words, the endoscope 10 is a non-reusable portion, to reduce or even avoid the risk of contamination or cross infection of the endoscope 10.

It should be noted that, the camera at the distal end of the lens tube 100 is mainly used for observing the condition of the target site in the human body, and converting the collected optical signal into a digital signal. In order to obtain an image of the target site in the body, an image processor (not shown) is often required, and the image processor is used to convert the digital signal obtained by the camera into an image signal for observation by an operator (e.g., doctor).

The image processor is typically integrated on a motherboard (not shown) that is electrically connected to the camera, which may be electrically connected to an external device (e.g., a display). The image processor converts the digital signals acquired by the camera into image signals, and the image signals are transmitted to external equipment through the main board so as to display images of the in-vivo target part on the external equipment, so that operators can observe clear amplified images, and accurate judgment of the conditions of the in-vivo target part is facilitated.

Because the image processor is mainly used for converting the digital signals acquired by the camera into image signals, the image processor does not need to enter the body or contact an operator. Also, since the main board (including devices mounted on the main board, such as an image processor) is expensive, the main board integrated with the image processor may be separately provided in order to avoid waste of materials, and the main board is electrically connected with the endoscope 10 as a reusable part.

Of course, if the space in the endoscope 10 is sufficient, the main board integrated with the image processor may be mounted in the endoscope 10, the endoscope 10 may be reused, the outer surfaces of the scope 100 and the operation handle 200 may be cleaned and sterilized before each use, or the endoscope 10 may be used as a disposable device, and the present embodiment is not limited thereto.

With continued reference to fig. 1, the operating handle 200 of the endoscope 10 may include an operating portion 210 and a grip portion 220, the scope 100 being mounted at one axial end of the operating portion 210, the grip portion 220 being connected at the other axial end of the operating portion 210. The operation portion 210 is mainly used for supporting the fixed lens 100, the operation portion 210 may have a mounting cavity (not shown in the figure), the mounting cavity is used for laying the aforementioned liquid path component and circuit component, and the holding portion 220 is mainly used for holding by an operator.

The holding portion 220 may be inclined to the operating portion 210, in other words, an included angle is formed between an axial direction of the holding portion 220 and an axial direction of the operating portion 210, so as to meet an angle requirement during operation, avoid an operator from contacting a patient during holding, ensure comfort of holding by the operator on the basis of ensuring that the lens tube 100 can extend into a target portion in the body and smoothly move in a corresponding tissue, and meet a space requirement of the operator for operating the endoscope 10.

The knob 211 may be mounted on the operation portion 210, and the knob 211 is used for driving the endoscope 100 to rotate so as to adjust the direction of the endoscope 100, so as to facilitate observation of different regions of the target site in the body, more perfect and complete observation of the target site, and improve operability of the endoscope 10.

In addition, fig. 1 shows a liquid inlet pipe 201 and a liquid outlet pipe 202 which are arranged in the operation handle 200, wherein the liquid inlet pipe 201 and the liquid outlet pipe 202 are part of the liquid path components, and the liquid inlet pipe 201 and the liquid outlet pipe 202 extend into the operation part 210 and are communicated with the mirror tube 100. The liquid inlet pipe 201 is used for conveying liquid into the lens pipe 100 so as to enable the liquid to enter a target site in a body through the lens pipe 100, and the liquid outlet pipe 202 is used for discharging the liquid in the lens pipe 100 so as to enable the liquid in the body, which flows back into the lens pipe 100, to be discharged out of the endoscope 10 through the liquid outlet pipe 202.

Taking the endoscope 10 as a hysteroscope for example, the liquid inlet pipe 201 can be used for conveying the bulge Gong Ye into the endoscope pipe 100, the bulge liquid is sprayed into the uterine cavity from the distal end of the endoscope pipe 100, the bulge liquid in the uterine cavity can also flow back into the endoscope pipe 100, and the bulge Gong Ye flowing back into the endoscope pipe 100 is discharged through the liquid outlet pipe 202.

Referring to fig. 1, in the present embodiment, the liquid inlet pipe 201 and the liquid outlet pipe 202 in the operation portion 210 may extend into the holding portion 220, and the liquid inlet pipe 201 and the liquid outlet pipe 202 may extend along the inner wall surface of the holding portion 220 and protrude from the opening at the bottom end of the holding portion 220. In other embodiments, the liquid inlet pipe 201 and the liquid outlet pipe 202 may extend directly from the operation unit 210 to the outside of the endoscope 10, which is not limited in this example.

The scope tube 100 of the endoscope 10 will be described in detail below.

FIG. 2 is a partial block diagram of a lens tube according to an embodiment of the present application; FIG. 3 is a front view of the mirror tube of FIG. 2; fig. 4 is an exploded view of the mirror tube of fig. 2.

It should be noted that, for convenience in illustrating the structure of the distal end of the scope 100, fig. 2 and the subsequent drawings mainly show the partial structure of the distal end of the scope 100.

Referring to fig. 2 to 4, in the present embodiment, a scope 100 of an endoscope 10 includes a scope main body 110 and a scope tip 120. The scope body 110 is a body structure of the scope 100, a proximal end of the scope body 110 is connected to the operation portion 210 of the operation handle 200, and a distal end of the scope body 110 extends in a direction away from the operation portion 210. The scope tip 120 is mounted to the distal end of the scope body 110, that is, the scope tip 120 is located at the distal end of the scope 100.

By separately manufacturing the lens body 110 and the lens tip 120 in two parts, the difficulty in manufacturing the lens 100 is reduced, and the manufacturing cost of the lens 100 is saved.

The lens tube tip 120 includes a tip body 121 and an auxiliary device 122. The tip body 121 serves as a body support structure for the scope tip 120 and is mounted to the distal end of the scope body 110. An auxiliary device 122 is mounted on the tip body 121 to secure the auxiliary device 122 to the distal end of the scope 100 with the tip body 121.

By way of example, the auxiliary device 122 includes a camera 122a, a light source (not shown), a range finder (not shown), and the like. At least one auxiliary device 122 is mounted on the tip body 121, for example, at least a camera 122a is mounted on the tip body 121 to take an image of a target site in the body using the camera 122 a. On the basis that the camera 122a is mounted on the end body 121, other devices such as a light source, a range finder and the like can be mounted on the end body 121.

Referring to fig. 2 or 3, in the present embodiment, the distal end of the lens tube 100 is bent laterally to the lens tube 100, and the lens tube 100 includes a main body section 100a and a bending section 100b disposed in this order from the proximal end of the lens tube 100 to the distal end of the lens tube 100. The main body section 100a is used as a main body structure of the lens tube 100, occupies a large part of the length of the lens tube 100, and the lens tube 100 can extend into a target part in the body, and is mainly satisfied by the length provided by the main body section 100 a. The bending section 100b is located at a side of the body section 100a remote from the manipulation section 210, the bending section 100b provides the scope 100 with a bent distal end, and the auxiliary device 122 is mounted at an end of the bending section 100b.

The main body section 100a of the lens tube 100 may extend along a straight line, and the extending direction of the main body section 100a may be parallel to the axial direction of the operation portion 210 of the operation handle 200, for example, the main body section 100a may be coaxially disposed with the operation portion 210. The curved segment 100b forms an angle with the body segment 100a such that the scope 100 has a curved distal end.

By having a curved distal end of the scope 100, on the one hand, the scope 100 can accommodate differently configured lumens in the body to increase the range of applications of the endoscope 10. Taking endoscope 10 as a hysteroscope for example, the distal end of curved scope tube 100 can better match the configuration of the cervical orifice to vaginal connection location.

On the other hand, the movable range of the bending section 100b is enlarged, when the lens tube 100 is rotated, the area of the rotating circumferential surface of the bending section 100b is larger, and for the camera 122a mounted at the end part of the bending section 100b, the field of view range of the camera 122a is enlarged, and the direction of the camera 122a can be adjusted according to the requirement, so that the situation of comprehensively and perfectly observing the target part is facilitated.

Wherein the angle between the curved segment 100b and the main body segment 100a of the lens tube 100 may be between 150 ° -175 °, in other words, the curved segment 100b may be slightly inclined to the main body segment 100a, for example, the angle between the curved segment 100b and the main body segment 100a may be 155 °, 160 °, 165 °, 170 °, etc. The length of the curved segment 100b may be between 10mm-35mm, for example, the length of the curved segment 100b may be 15mm, 20mm, 25mm, etc.

By tilting curved section 100b slightly from main section 100a and controlling the length of curved section 100b within a suitable range, it is ensured that the field of view of camera 122a may cover the working range of the surgical instrument after extension. If the inclination of the curved section 100b is too large and the optical axis direction of the camera 122a is not in the axial direction of the main body section 100a, for example, the optical axis direction of the camera 122a is parallel to the inclination direction of the curved section 100b, no instrument operation can be observed in the field of view of the camera 122 a; if the length of the bending section 100b is too long, the camera 122a may not see the instrument operation position even if the optical axis direction of the camera 122a is in the axial direction of the main body section 100 a.

Wherein, can arc transition between the main part section 100a and the bending section 100b of mirror tube 100 to make mirror tube 100's whole outer wall personally submit smooth state, avoid appearing sharp-pointed arch, in order to prevent mirror tube 100 from causing the discomfort to the user when stretching into the body, and still can avoid mirror tube 100 to appear stress concentration phenomenon, can guarantee mirror tube 100's structural strength and reliability.

In addition, in this embodiment, the outer diameters of the parts of the lens tube 100 in the longitudinal direction can be kept approximately the same, so that the uniformity of the entire lens tube 100 is good, the curved section 100b of the lens tube 100 also maintains a sufficient cross-sectional area, which is helpful for improving the structural strength of the lens tube 100, and the lens tube 100 does not have a phenomenon of local stress concentration. In addition, the lens tube 100 can be matched with different tissues and cavities in the body, and the applicability of the lens tube 100 is higher.

FIG. 5 is a top view of the mirror tube of FIG. 2; FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5; FIG. 7 is a schematic view of a structure of a lens tube end according to an embodiment of the present application; FIG. 8 is a block diagram of a tip body provided in an embodiment of the present application; FIG. 9 is a cross-sectional view of the tip body of FIG. 8 taken along line A-A of FIG. 5; fig. 10 is a left side view of the mirror tube of fig. 2.

Referring to fig. 5 and 6, in the present embodiment, the distal end of the curved scope 100 may be formed by means of the scope tip 120, and the whole scope body 110 may be of a linear structure, for example, the scope body 110 may extend linearly along the axial direction of the operation portion 210 of the operation handle 200.

On the one hand, in order to secure the structural strength of the scope tube 100, the scope tube main body 110 is generally made of a metal material, and since the scope tube 100 is to be inserted into a lumen of a body, the scope tube main body 110 is elongated as a whole. By keeping the straight shape of the lens main body 110, the lens main body 110 can maintain higher structural strength, and the manufacturing difficulty of the lens main body 110 is smaller, and the lens main body 110 and the lens end 120 can be easily assembled, so that the overall structural strength of the lens 100 can be improved, and the manufacturing difficulty of the lens 100 can be reduced.

On the other hand, the size of the lens tip 120 mounted at the distal end of the lens body 110 is generally small, and the difficulty in manufacturing the lens tip 120 is small, so that the construction of the lens tip 120 is easy to flexibly design, and the lens tip 120 is easy to process into a curved structure.

Specifically, in the present embodiment, as shown in fig. 6 and 7, from one end of the tip body 121 facing the lens body 110 to the other end of the tip body 121, the tip body 121 includes a first section 121a and a second section 121b sequentially arranged. Wherein the first section 121a of the tip body 121 may extend in an axial direction of the scope body 110 to facilitate mounting of the tip body 121 at the distal end of the scope body 110. The second section 121b of the tip body 121 is angled with respect to the first section 121a, the second section 121b being angled with respect to the first section 121a, the second section 121b of the tip body 121 forming the curved section 100b of the lens 100.

Illustratively, the first and second sections 121a, 121b of the tip body 121 may be curved to provide a smooth overall exterior wall of the tube 100.

As for the structure of the scope body 110, as shown in fig. 4 and 6, the scope body 110 includes an inner tube 111 and an outer tube 112, the outer tube 112 is sleeved outside the inner tube 111, and an annular passage 113 is formed between the inner tube 111 and the outer tube 112. By providing the inner tube 111 and the outer tube 112 which are internally and externally sleeved, the inner tube 111 and the outer tube 112 can realize different functions so as to separate a channel for a surgical instrument to pass through and a channel for installing the endoscope end head 120, and can separate and form a liquid inlet channel and a liquid outlet channel which are mutually independent so as to prevent liquid entering the endoscope 100 from being mixed with liquid discharged from the body through the endoscope 100 and avoid pollution caused by the liquid.

Since the cross-sectional area of the passage formed by the inner tube 111 is large and the cross-sectional area of the annular passage 113 formed between the inner tube 111 and the outer tube 112 is small, the passage formed by the inner tube 111 can be used as the instrument passage 114, in other words, the inner tube 111 is used for passing a surgical instrument. Accordingly, the lens end 120 may be disposed corresponding to the port of the outer tube 112, and the lens end 120 may be disposed at the end of the annular channel 113, for example, the lens end 120 is inserted into the annular channel 113, so as to avoid the influence of the lens end 120 on the instrument channel 114, and ensure that the instrument can smoothly extend into the target site in the body through the inner tube 111.

For the connection structural relationship of the inner tube 111 and the outer tube 112, for convenience of description, the present embodiment defines a first side and a second side of the scope tube 100, which are radially opposite sides of the scope tube 100. In this embodiment, the first side outer wall of the inner tube 111 may be attached to the first side inner wall of the outer tube 112, and the second side outer wall of the inner tube 111 is far away from the second side inner wall of the outer tube 112 (as shown in fig. 6), so that the annular channel 113 formed between the inner tube 111 and the outer tube 112 is not a complete annular channel, and a partition portion (a portion where the inner tube 111 is attached to the outer tube 112) exists in the circumferential direction of the annular channel 113, which is convenient for designing and installing the lens tube end 120, and is also beneficial for flexible design of the port structure of the inner tube 111.

As for the molding manner of the inner tube 111 and the outer tube 112, in some embodiments, separate inner tube 111 and outer tube 112 may be provided, and then the first side outer wall of the inner tube 111 and the first side inner wall of the outer tube 112 may be connected together, for example, the first side outer wall of the inner tube 111 and the first side inner wall of the outer tube 112 may be welded or adhesively connected; in other embodiments, the inner tube 111 and the outer tube 112 may be integrally formed, that is, the inner tube 111 and the outer tube 112 are integrally formed, so that the mirror body has good integrity and high structural strength.

Illustratively, to facilitate assembly of the scope body 110 with the scope head 120, the inner tube 111 and the outer tube 112 may be separate components, and the inner tube 111 and the outer tube 112 may be sequentially connected with the scope head 120 to assemble the scope 100. Hereinafter, the inner tube 111 and the outer tube 112 are each an independent member, and will be described.

As for the structural design of the lens tube end 120, as shown in fig. 8 and 9, a first channel 1211 and a second channel 1212 are formed in the end body 121, the first channel 1211 and the second channel 1212 extend along the length direction of the end body 121, and the first channel 1211 and the second channel 1212 penetrate through both axial ends of the end body 121. Wherein the first channel 1211 communicates with the inner tube 111 of the scope body 110 and the second channel 1212 communicates with the outer tube 112 of the scope body 110 (see fig. 6).

As shown in fig. 6 and 9, in the present embodiment, the first passage 1211 of the tip body 121 may be extended straight in the extending direction of the inner tube 111 on the basis that the inner tube 111 is extended straight. So configured, in the axial direction of the scope 100, the instrument channel 114 formed by the first channel 1211 of the tip body 121 and the inner tube 111 together extends along a straight line all the time, and the cross-sectional areas of the respective portions of the instrument channel 114 remain the same, and the scope 100 may have the instrument channel 114 with a larger cross-sectional area (diameter) on the premise that the scope 100 is maintained in a smaller size (see fig. 10).

Illustratively, in the present embodiment, the outer diameter of the scope tube 100 (the scope tube main body 110) may be equal to or less than 5mm, for example, the outer diameter of the scope tube main body 110 may be 4.9mm, 4.8mm, 4.7mm, 4.6mm, 4.5mm, 4.4mm, 4.3mm, etc., the diameter of the instrument channel 114 (the inner tube 111 and the first channel 1211 of the tip main body 121) may be equal to or greater than 2.5mm, for example, the diameter of the instrument channel 114 may be 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3.0mm, 3.1mm, 3.2mm, etc.

With continued reference to fig. 9, in order to form a curved tip body 121, the second section 121b of the tip body 121 may be inclined to the side of the second channel 1212, on the basis that the first channel 1211 of the tip body 121 extends straight in the axial direction of the scope body 110. The port of the first channel 1211 of the tip body 121 may be inclined so that the plane of the port of the first channel 1211 is inclined toward the second channel 1212, so that the diameters of the portions of the tip body 121 in the longitudinal direction are substantially uniform.

Illustratively, the plane of the port of the first channel 1211 may be parallel to the opposite side of the outer wall of the header body 121, and the plane of the port of the first channel 1211 may fully occupy the second section 121b of the header body 121 along the length of the header body 121. Thus, the tip body 121 maintains uniform diameters at respective portions in the longitudinal direction, and the entire scope 100 maintains high uniformity in the longitudinal direction.

In order to tilt the plane of the port of the first channel 1211 toward the second channel 1212 (e.g., the plane of the port of the first channel 1211 and the opposite side of the header body 121 are parallel), in practice, a notch may be beveled in the sidewall on the side of the header body 121 where the first channel 1211 is located, such that the edge of the notch is approximately parallel to the opposite side of the outer wall.

With continued reference to fig. 9, the tip body 121 also has a mounting hole 1213 formed therein, the mounting hole 1213 being located at a front end of the tip body 121 (an end of the tip body 121 facing away from the scope body 110), the auxiliary device 122 being mounted in the mounting hole 1213 (see fig. 6), for example, an outer side wall of the auxiliary device 122 being bonded to a wall of the mounting hole 1213. The number of the mounting holes 1213 formed in the tip body 121 may be one or more than two, and each auxiliary device 122 is mounted in a corresponding mounting hole 1213.

Taking the auxiliary device 122 as the camera 122a as an example, a mounting hole 1213 for mounting the camera 122a may be formed in a middle area of the tip body 121, for example, the mounting hole 1213 may be located between the first channel 1211 and the second channel 1212, so as to ensure that the mounting hole 1213 has enough space to mount the camera 122a, and a hole wall of the mounting hole 1213 forms a full enclosure on a peripheral side of the camera 122a, so that the camera 122a can be mounted firmly.

Of course, other devices such as the light source and the range finder may be mounted on the tip body 121 in addition to the camera 122a mounted on the tip body 121. For example, the light source may be mounted by forming another mounting hole 1213 in the tip body 121, for example, by forming a mounting hole 1213 having a small hole diameter on the circumferential side of the mounting hole 1213 for mounting the camera 122a, and mounting the light source by using the mounting hole 1213. Alternatively, the light source may be integrated on the camera 122a, so that only one mounting hole 1213 needs to be formed in the tip body 121, which is advantageous for the structural design of such a tiny component as the tip body 121.

In some examples, the mounting bore 1213 may be in communication with the second passage 1212, the cable 1221 connected to the auxiliary device 122 may be threaded into the annular passage 113 between the inner tube 111 and the outer tube 112, and the cable 1221 connected to the auxiliary device 122 within the mounting bore 1213 through the second passage 1212 (see fig. 6). The cable 1221 may be directly disposed in the annular space channel 113, or a cable channel may be disposed on an inner wall of the outer tube 112, where the cable channel is isolated from the annular space channel 113, the cable 1221 is disposed in the cable channel in a penetrating manner, and through an isolation protection function of the cable channel, the cable 1221 is prevented from contacting the liquid flowing in the annular space channel 113, thereby improving reliability of the cable 1221 and prolonging service life of the cable 1221.

In other examples, a separate cable passage may be provided that the space within the tip body 121 is sufficient, in other words, the cable passage may be spaced from the second passage 1212, the cable passage communicating with the annulus passage 113. The cable 1221 is disposed in the cable channel and isolated from the fluid flowing through the tip body 121, which is not described herein.

Fig. 11 is a partial enlarged view at a in fig. 6. Referring to fig. 11, in order to enhance the overall structural strength of the lens tube 100, the joint between the tip body 121 and the lens tube body 110 may be formed by stacking the tip body 121 and the lens tube body 110, in other words, the side walls of the tip body 121 and the lens tube body 110 may be bonded to each other, so as to increase the joint area therebetween, enhance the joint strength therebetween, enhance the overall structural strength of the lens tube 100, and ensure the reliability of the lens tube 100.

Specifically, when designing the endoscope body 110, the distal end of the outer tube 112 may extend beyond the distal end of the inner tube 111 (as shown in fig. 4 and 14), the whole of the tip body 121 may extend into the outer tube 112, and the outer sidewall of the tip body 121 is attached to the inner sidewall of the outer tube 112. Also, the side wall of the first channel 1211 of the tip body 121 may be connected to the side wall of the inner tube 111, for example, the inner side wall of the first channel 1211 of the tip body 121 is attached to the outer side wall of the inner tube 111 (as shown in fig. 14), or the outer side wall of the first channel 1211 is attached to the inner side wall of the inner tube 111.

As for the design of the liquid passage in the scope tube 100, one of the inner tube 111 and the outer tube 112 (the annular passage 113) may be used as a liquid inlet passage, and the other may be used as a liquid outlet passage, which communicates with the liquid inlet tube 201 in the operation handle 200, and which communicates with the liquid outlet tube 202 in the operation handle 200. Wherein, the liquid enters the liquid inlet channel of the lens tube 100 from the liquid inlet tube 201, and the liquid in the liquid inlet channel flows out from the distal end of the lens tube 100 and enters the target part in the body; fluid in the body flows back from the distal end of the scope tube 100 to the fluid outlet channel of the scope tube 100 and then out of the endoscope 10 through the fluid outlet tube 202.

Since the diameters of the inner tube 111 and the first channel 1211 (instrument channel 114) of the tip body 121 are generally larger, and the opening area of the port of the first channel 1211 is larger, and the cross-sectional areas of the annular channel 113 formed between the inner tube 111 and the outer tube 112 and the second channel 1212 of the tip body 121 are generally smaller, liquid in the body easily flows back into the scope tube 100 from the port of the first channel 1211 having a larger opening area. Thus, as an example, the annular channel 113 between the inner tube 111 and the outer tube 112 may be used as a liquid inlet channel, and the inner tube 111 may be used as a liquid outlet channel, so that the second channel 1212 on the head body 121 is narrower, and the liquid may be rapidly ejected through the second channel 1212.

In addition, by taking the annular channel 113 between the inner tube 111 and the outer tube 112 as a liquid inlet channel, the liquid is rapidly ejected from the second channel 1212 of the tip body 121, and the ejected liquid can also impact the auxiliary device 122 on the front end surface of the tip body 121, for example, impact the lighting surface of the camera 122a, so as to clean the lighting surface of the camera 122a, remove impurities on the lighting surface of the camera 122a, and ensure the definition of the image shot by the camera 122 a.

In some examples, the front end of the tip body 121 may also be provided with one or more diversion holes (not shown) that communicate with the second channel 1212. Compared with the second channel 1212, the cross-sectional area of the diversion hole can be smaller, which can increase the liquid spraying speed, and better clean the lighting surface of the camera 122 a.

In this embodiment, the mirror tube tip 120 may be further provided with a shutter 123 (shown with reference to fig. 7) on the basis of the port of the first channel 1211 formed by the sidewall beveled cut of the tip body 121, the shutter 123 being attached to the outer wall surface of the tip body 121, and the shutter 123 being blocked from the port of the first channel 1211. The shutter 123 may be made of an elastic material, and the shutter 123 may be elastically deformed to expose or block a port of the first passage 1211, which corresponds to opening or closing the first passage 1211.

Specifically, the shutter 123 may cover a port of the first passage 1211 (see fig. 6) in a natural state to close the first passage 1211; and when the shutter 123 is subjected to an external force, the shutter 123 may deflect in a direction away from the outer wall of the head body 121 to expose the port of the first passage 1211, opening the first passage 1211.

So arranged, when the surgical instrument is not in use, the port of the first channel 1211 is shielded by the shutter 123, which can improve the cleanliness of the endoscope 10 and prevent the endoscope 10 from being contaminated or cross-infection. When the surgical instrument is needed, the surgical instrument can be pushed out through the instrument channel 114 and the first channel 1211 to the port of the first channel 1211, and the valve 123 can be opened, at this time, the valve 123 opens the first channel 1211, and the surgical instrument can be pushed out of the endoscope 10 to operate the target site in the body.

It should be noted that even when the shutter 123 covers the port of the first passage 1211, the shutter 123 does not completely seal the port of the first passage 1211, and a minute aperture is defined between the shutter 123 and the wall surface of the tip body 121, for example, the shutter 123 is designed in an arc-shaped structure matching the outer wall of the tip body 121, and when the shutter 123 covers the port of the first passage 1211, the cross section of each portion of the lens tip 120 in the longitudinal direction is in a regular circle. The shutter 123 encloses a hole gap (shown in conjunction with fig. 4 and 6) with the head body 121 by means of a curvature to facilitate liquid return.

Taking the endoscope 10 as a hysteroscope for example, during the use of the endoscope 10, even if the operation of the instrument is not required, there is a case where liquid is required to flow, for example, when the hysteroscope is used only for examination, it is required that the uterine fluid enters the uterine cavity and flows back into the hysteroscope from the uterine cavity, and at this time, the liquid in the body can flow back into the endoscope 10 from the aperture surrounded by the shutter 123 and the tip body 121.

Fig. 12 is a block diagram of another view of the end of the mirror tube of fig. 7. Referring to fig. 12, the shutter 123 may include a connection section 1231 and a movable section 1232 sequentially disposed along an extension direction of the adapter, the connection section 1231 may be attached to an outer wall of the tip body 121, the shutter 123 is connected with the tip body 121 by means of the connection section 1231, the movable section 1232 corresponds to a port of the first channel 1211, the movable section 1232 blocks the port of the first channel 1211, and the movable section 1232 moves relative to the connection section 1231 to block or expose the port of the first channel 1211, and thus, close or open the first channel 1211.

Wherein, the free end of the movable segment 1232 (the end of the movable segment 1232 deviating from the connecting segment 1231) is from the end that the movable segment 1232 is connected with the connecting segment 1231, the movable segment 1232 includes a necking segment 1232a and a main body portion that are sequentially arranged, and the width of the necking segment 1232a is smaller than the width of the main body portion. By arranging the necking segment 1232a on the side, close to the connecting segment 1231, of the movable end, strength of the connecting part of the movable segment 1232 and the connecting segment 1231 is reduced, deformation of the movable segment 1232 is facilitated, and accordingly smooth opening of the first channel 1211 by the movable segment 1232 is guaranteed.

On the basis that the valve 123 is connected to the tip body 121 to block the port of the first channel 1211, in this embodiment, the lens tip 120 further includes a tip sleeve (not shown in the figure), the tip sleeve is sleeved outside the tip body 121, and the tip sleeve may be made of elastic materials such as rubber, silica gel, etc., and is tightly attached to the outer wall of the tip body 121, so that a force can be provided to enable the movable section 1232 of the valve 123 to be tightly attached to the port of the first channel 1211. By this arrangement, the tip sleeve can ensure that the shutter 123 stably covers the port of the first passage 1211, so that the cross section of each portion of the lens tube 100 in the longitudinal direction is regularly circular.

Because the end sleeve has elasticity, when a surgical instrument passes through, the movable section 1232 of the valve 123 can be pushed open, the port of the first channel 1211 is exposed, and the first channel 1211 is opened; after the surgical instrument is removed, the movable section 1232 of the valve 123 is reset under the action of the self elastic force, the end sleeve can also play an auxiliary resetting role on the movable section 1232, and the end sleeve presses the movable section 1232 to enable the movable section 1232 to be clung to the port of the first channel 1211.

Similar to the tip sleeve sleeved outside the tip body 121, the outer portion of the scope body 110 may also be sleeved with a body sleeve (not shown in the figure), and the body sleeve may also be made of an elastic material such as rubber, silica gel, etc., and is tightly attached to the outer wall of the scope body 110 so as to seal the scope body 110. By the combined action of the tip sleeve and the body sleeve, the overall sealing performance of the scope tube 100 is enhanced, and the cleanliness and safety of the endoscope 10 can be improved.

For example, the tip sleeve and the main body sleeve may be separately provided, or may be manufactured as an integrally formed structure, which is not limited in this embodiment.

Referring to fig. 10 or 12, in this embodiment, the front end surface of the head body 121 further extends with a spoiler 1214, and the spoiler 1214 may be integrally formed on the front end surface of the head body 121, where the spoiler 1214 is used to change the flow direction of the liquid ejected from the second channel 1212. Wherein the spoiler 1214 is curved toward the center of the front end surface of the tip body 121, and the spoiler 1214 is located within the injection range of the liquid in the second channel 1212, for example, the spoiler 1214 may block at least part of the ports of the second channel 1212.

In this way, the liquid in the second passage 1212 is ejected to the spoiler 1214, and the spoiler 1214 can eject the liquid toward the front end surface of the head body 121. On one hand, the turbulence of the liquid at a target part (such as the uterine cavity) in the body is facilitated, and the liquid can more quickly and comprehensively wash the target part; on the other hand, the flushing effect of the liquid on the auxiliary equipment 122 mounted on the front end face of the head main body 121 can be improved, for example, impurities on the lighting face of the camera 122a are removed, and the definition of the image shot by the camera 122a is ensured.

The spoiler 1214 may be disposed corresponding to a port of the second channel 1212, in other words, the spoiler 1214 and the second channel 1212 may be disposed along a radial direction of the front end surface of the head body 121, in which the spoiler 1214 may be located on a side of the second channel 1212 away from a center of the front end surface of the head body 121, and the spoiler 1214 may be bent toward the side of the second channel 1212.

In this way, the spraying area of the liquid in the second channel 1212 may be more occupied by the spoiler 1214, so that the liquid sprayed in the second channel 1212 is more sprayed to the spoiler 1214, so as to enhance the spoiler effect of the spoiler 1214, to form a better turbulence effect at the target site in the body, and to remove the impurities on the surface of the auxiliary device 122 more quickly and thoroughly.

As a specific embodiment, the spoiler 1214 may completely block the port of the second channel 1212, so that the spoiler 1214 may completely cover the injection range of the liquid in the second channel 1212, in other words, the liquid injected in the second channel 1212 may be entirely injected to the spoiler 1214. In this way, the turbulence part 1214 can fully play a role in guiding the liquid sprayed out of the second channel 1212 to form turbulence at the target part in the body, so that the liquid can fill the target part more quickly, the flow speed of the liquid can be increased, the flushing effect of the liquid on the target part can be enhanced, and the flushing effect of the lens tube end 120 can be further improved.

Referring to fig. 9, the spoiler 1214 may be provided at an edge of the front end surface of the head body 121, that is, an outer wall surface of the spoiler 1214 (a side wall surface of the spoiler 1214 facing away from the front end surface of the head body 121) extends along an outer side wall of the head body 121. In this way, even if the spoiler 1214 is bent toward the center of the front end surface of the tip body 121, the entire spoiler 1214 is mainly blocked in the region where the second passage 1212 is located, and the auxiliary device 122 in the mounting hole 1213 is not blocked, for example, the spoiler 1214 can be prevented from blocking the field of view of the camera 122 a.

In addition, as shown with reference to fig. 9 or 12, the inner wall surface of the spoiler 1214 (a side wall surface of the spoiler 1214 that faces the front end surface of the head body 121) may extend along the side inner wall of the second passage 1212 that is close to the edge of the head body 121. That is, in the radial direction of the front end face of the tip body 121, for the spoiler 1214 that is located outside the second channel 1212 (on the side of the second channel 1212 near the edge), the outer wall surface of the spoiler 1214 extends along the outer side wall of the tip body 121, and the inner wall surface of the spoiler 1214 extends along the inner wall of the second channel 1212 on the side away from the center of the tip body 121.

So arranged, in the radial direction of the front end face of the head body 121, the spoiler 1214 occupies all the space outside the second channel 1212, and the thickness of the spoiler 1214 is the distance between the inner wall of the side of the second channel 1212 facing away from the center of the head body 121 and the edge of the front end face of the head body 121. On the one hand, the layout structure of the front end face of the end head main body 121 is more reasonable, which is beneficial to reducing the area of the front end face of the end head main body 121, thereby reducing the volume of the end head main body 121; on the other hand, the turbulence portion 1214 is made to have a sufficient thickness, so that the structural strength of the turbulence portion 1214 can be ensured, and the reliability and stability of the turbulence portion 1214 can be ensured even under the impact of the liquid ejected from the second passage 1212.

As for the thickness setting manner of the spoiler 1214, in some embodiments, the spoiler 1214 may be provided with a uniform thickness, that is, the thickness of the spoiler 1214 is uniform, so that the uniformity of each portion of the spoiler 1214 is good, and the processing and setting are also facilitated. Depending on the sizing of the front face of the tip body 121, and the spacing between the second channel 1212 and the edge of the front face of the tip body 121, the thickness of the spoiler 1214 may range between 0.4mm-0.6mm, e.g., the thickness of the spoiler 1214 may be 0.42mm, 0.44mm, 0.46mm, 0.48mm, 0.5mm, 0.52mm, 0.54mm, 0.56mm, 0.58mm, etc.

In other embodiments, the spoiler 1214 may be provided with a thicker middle and thinner sides from the connecting end of the spoiler 1214 (the end of the spoiler 1214 connected to the front end surface of the head body 121) to the free end of the spoiler 1214 (the end of the spoiler 1214 remote from the head body 121). That is, at the portion of the spoiler 1214 having a larger bending curvature, the thickness of the spoiler 1214 is larger, so as to improve the overall structural strength of the spoiler 1214 and reduce the discomfort of the user.

Fig. 13 is a front view of a lens barrel head according to an embodiment of the present application. Referring to fig. 13, in order to avoid interference of the spoiler 1214 on the auxiliary device 122, for example, to avoid the spoiler 1214 from blocking the market range of the camera 122a, in this embodiment, the distance d between the free end of the spoiler 1214 and the central axis of the second section 121b of the tip body 121 may be 0.8mm-1.2mm, so that it is ensured that the spoiler 1214 can block the spraying area of the liquid in the second channel 1212, and that the free end of the spoiler 1214 does not interfere with the auxiliary device 122, for example, the free end of the spoiler 1214 does not enter the field of view of the camera 122 a.

Illustratively, the spacing d between the free end of the spoiler 1214 and the central axis of the second segment 121b of the tip body 121 is 0.9mm, 1.0mm, 1.1mm, etc.

In addition, the distance D between the free end of the spoiler 1214 and the front end surface of the tip body 121 may be 1.5mm-2.5mm, so as to avoid that the free end of the spoiler 1214 is too close to the front end surface of the tip body 121, so that the free end of the spoiler 1214 interferes with the auxiliary device 122, the free end of the spoiler 1214 enters the field of view of the camera 122a, and also prevent that the free end of the spoiler 1214 is too far from the front end surface of the tip body 121, so that the liquid injection area of the second channel 1212 blocked by the spoiler 1214 is too small, and even the spoiler 1214 cannot be located in the liquid injection area of the second channel 1212.

Illustratively, the spacing D between the free end of the spoiler 1214 and the front end surface of the tip body 121 may be 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, etc.

With continued reference to fig. 13, in the present embodiment, from the connection end of the spoiler 1214 to the free end of the spoiler 1214, the spoiler 1214 may include a straight segment 12141 and an arcuate segment 12142 connected in sequence, the straight segment 12141 extending in the extending direction of the head body 121, in other words, the straight segment 12141 extending in the axial direction of the second segment 121b of the head body 121, the arcuate segment 12142 being curved toward the center of the front end surface of the head body 121.

It should be noted that, for the spoiler 1214 provided at the edge of the front end surface of the head main body 121, the spoiler 1214 may match the outer profile of the head main body 121. For a spoiler 1214 having a certain width, the cross-sectional shape of the straight segment 12141 of the spoiler 1214 may be an arc, the outer wall surface of the spoiler 1214 extends along the outer side wall of the head body 121, and the surface of the arcuate segment 12142 of the spoiler 1214 is similarly an arc-shaped spherical surface.

The turbulence part 1214 increases the distance between the arc-shaped section 12142 and the front end surface of the end head main body 121 by arranging the flat section 12141 so as to reserve enough distance between the arc-shaped section 12142 and the port of the second channel 1212, thereby ensuring that the liquid sprayed out of the port of the second channel 1212 can be sprayed to the arc-shaped section 12142 of the turbulence part 1214, and avoiding the obstruction of the smooth flow of the liquid sprayed out of the port of the second channel 1212 due to the excessively close arc-shaped section 12142 and the port of the second channel 1212 on the premise that the turbulence part 1214 can effectively play a role in turbulence.

In addition, the straight section 12141 extends along the axial direction of the second section 121b of the end body 121, so that the spoiler 1214 has a small straight section 12141 extending along the extending direction of the second channel 1212, the straight section 12141 has a guiding effect on the liquid ejected from the port of the second channel 1212, and the curved section 12142 and the straight section 12141 smoothly transition from each other, so that the liquid can be smoothly guided to the curved section 12142, and the impact of the liquid on the curved section 12142 is prevented from being too large, thereby affecting the reliability of the spoiler 1214.

The flow disturbing portion 1214 is formed by providing an arc segment 12142, and the arc segment 12142 is bent toward the front end face of the tip body 121, so that the arc segment 12142 is blocked in front of the port of the second passage 1212, and the liquid ejected from the port of the second passage 1212 is ejected to the arc segment 12142, and the flow direction of the liquid is changed by the arc segment 12142, so that the flow disturbing portion 1214 plays a role of turbulence.

Further, the inner wall surface of the turbulent flow portion 1214 is smooth and has no sharp corner, thereby preventing the turbulence of the liquid flow ejected from the second passage 1212 and reducing the energy loss of the liquid flow. The outer wall surface of the spoiler 1214 is also smoother, so as to reduce discomfort caused to the user, and also improve the consistency of the spoiler 1214, and improve the stability and reliability of the spoiler 1214.

Fig. 14 is a semi-sectional view of the lens barrel tip of fig. 13. Referring to FIG. 14, the radius R of the arcuate segment 12142 of the spoiler 1214 may be 0.6mm-1.0mm, depending on the size of the sizing of the lens tip 120. On the one hand, it can be avoided that the radius of the arc segment 12142 is too small such that the arc segment 12142 covers only a small part of the area of the ejection range of the liquid (ejected from the port of the second passage 1212), even if the arc segment 12142 cannot effectively cover the ejection area of the liquid. On the other hand, it is also possible to avoid that the arc segment 12142 interferes with the auxiliary device 122 due to the radius of the arc segment 12142 being too large, for example, to block the field of view of the camera 122 a.

By way of example, the radius R of the arcuate segment 12142 of the spoiler 1214 may be 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, etc.

With continued reference to fig. 14, in order for the liquid ejected from the port of the second channel 1212 to quickly fill the target site in the body under the turbulence action of the turbulence portion 1214, in some examples, the free end of the turbulence portion 1214 may be inclined in a direction away from the front end face of the tip body 121, in other words, the free end of the turbulence portion 1214 may be inclined forward of the scope tip 120. In this way, the arc-shaped section 12142 of the spoiler 1214 can guide the liquid ejected from the second channel 1212 to the front of the lens tube 100, so that the liquid smoothly flows to the target portion in the body, and the target portion is quickly filled, so as to ensure the flushing effect on the target portion.

Wherein the angle α between the extending direction of the free end of the spoiler 1214 and the front end surface of the head body 121 may be 20 ° -30 °. In this way, the angle between the extending direction of the free end of the spoiler 1214 and the front end surface of the head body 121 is small, and the spoiler effect of the spoiler 1214 can be ensured. For example, the angle α between the extending direction of the free end of the spoiler 1214 and the front end surface of the head body 121 may be 22 °, 24 °, 26 °, 28 °, or the like.

In other examples, the extending direction of the free end of the spoiler 1214 may be parallel to the front end surface of the tip body 121, and since there is a sufficient distance between the free end of the spoiler 1214 and the front end surface of the tip body 121, the liquid ejected from the second channel 1212 can be ensured to smoothly flow to the target portion in the body even if the extending direction of the free end of the spoiler 1214 is parallel to the front end surface of the tip body 121.

In addition, the free end of the spoiler 1214 is prevented from tilting toward the front end surface of the head body 121, so that the liquid ejected from the second channel 1212 is prevented from totally impacting the front end surface of the head body 121 under the guiding action of the spoiler 1214, and thus the liquid flowing back into the inner tube 111 from the slit of the shutter 123 is increased, and the loss of the liquid is caused.

Fig. 15 is a bottom view of the mirror tube tip of fig. 13. Referring to fig. 15, in this embodiment, the shape of the arc segment 12142 of the spoiler 1214 may be designed, from one end of the arc segment 12142 connected to the straight segment 12141 to the other end of the arc segment 12142, and the width of the arc segment 12142 may be gradually increased to increase the surface area of the inner wall surface of the arc segment 12142, so as to increase the coverage area of the spoiler 1214 to the liquid injection range of the second channel 1212, and enhance the spoiler effect of the spoiler 1214.

Illustratively, the width of the straight section 12141 of the spoiler 1214 may be equal to or slightly greater than the width of the port of the second channel 1212, with the spoiler 1214 occupying less space on the front end surface of the head body 121. After the liquid is ejected from the port of the second channel 1212, the liquid diffuses outwards, and by gradually increasing the width of the arc-shaped section 12142 of the spoiler 1214, the arc-shaped section 12142 can cover the whole area of the liquid ejecting range, and all the liquid can be ejected to the arc-shaped section 12142, and the spoiler 1214 can spoiler all the liquid ejected from the second channel 1212.

Since the width of the arc-shaped section 12142 of the spoiler 1214 gradually increases, so that the width of the free end of the spoiler 1214 is the largest, two sides of the free end of the spoiler 1214 protrude outwards, and in order to avoid discomfort to the user caused by two sides of the free end of the spoiler 1214, stress concentration phenomenon is also prevented from occurring on two sides of the free end of the spoiler 1214, in this embodiment, the end of the arc-shaped section 12142 facing away from the flat section 12141, that is, two sides of the free end of the spoiler 1214 may be in arc transition.

Depending on the dimensioning of the tip body 121, the difference between the maximum width L of the arcuate segment 12142 of the spoiler 1214 (the width of the end of the arcuate segment 12142 facing away from the flat segment 12141) and the width L of the flat segment 12141 can be 0.2mm-0.5mm. For example, the difference between the maximum width L of the arcuate segment 12142 and the width L of the straight segment 12141 is 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, etc.

Illustratively, the straight segment 12141 can have a width l of 2.3mm-2.8mm, e.g., the straight segment 12141 can have a width l of 2.4mm, 2.5mm, 2.6mm, 2.7mm, etc. The maximum width L of the arcuate segment 12142 may be 2.5mm-3.0mm, e.g., the maximum width L of the arcuate segment 12142 is 2.6mm, 2.7mm, 2.8mm, 2.9mm, etc.

FIG. 16 is an exploded view of the end of the mirror tube of FIG. 7; fig. 17 is a schematic structural view of a left shell of the tip body according to an embodiment of the present application; fig. 18 is a schematic structural view of a right shell of the tip body according to an embodiment of the present application.

Referring to fig. 16, in order to reduce the difficulty in assembling the lens tube end 120, in this embodiment, the end body 121 may be composed of a left housing 121c and a right housing 121d, and the left housing 121c and the right housing 121d are spliced to form the end body 121. The first channel 1211, the second channel 1212 and the mounting hole 1213 in the end body 121 may be enclosed by the left housing 121c and the right housing 121d together (the aforementioned spoiler 1214 may also be formed by splicing the left housing 121c and the right housing 121 d), which facilitates mounting the auxiliary device 122 (such as the camera 122 a) in the mounting hole 1213, and particularly facilitates mounting the cable 1221 (connected to the auxiliary device 122) so as to quickly and accurately assemble the lens tube end 120.

Specifically, the auxiliary device 122 may be positioned within the mounting hole 1213 in the left housing 121c or the right housing 121d while the cable 1221 is routed within the second channel 1212 of the same housing, and then the left housing 121c and the right housing 121d are spliced together to assemble the completed lens barrel head 120.

For the tip body 121 formed by splicing the left and right cases 121c and 121d, the tip body 121 may be made of a metal material such as stainless steel, aluminum alloy, or titanium alloy in order to improve the structural strength of the tip body 121. After the left and right housings 121c and 121d are spliced together, they may be securely connected using a welding process (e.g., laser welding). For example, an entire weld may be provided on the outer side wall of the side where the first channel 1211 is located, and a plurality of welds may be provided at intervals or an entire weld may be provided on the outer side wall of the side where the second channel 1212 is located.

Of course, the end body 121 may be made of plastic, rubber, silica gel, or other materials. Thus, the tip body 121 can be manufactured by injection molding, 3D printing, or the like, and the tip body 121 can be mounted on the distal end of the lens body 110 by adhesion. Moreover, on the basis that the tip body 121 has sufficient strength, the tip body 121 may also have a certain elasticity, so as to avoid hard contact between the tip body 121 and the internal tissue, avoid discomfort to the user, and also prevent the tip body 121 from damaging the internal tissue.

Referring to fig. 17 and 18, in order to position the left and right cases 121c and 121d, the left case 121c is provided with a first positioning portion 1215, and the right case 121d is provided with a second positioning portion 1216, and the first and second positioning portions 1215 and 1216 are corresponding in position and match in shape. When the left shell 121c and the right shell 121d are spliced, the left shell 121c and the right shell 121d are accurately aligned through the mutual matching of the first positioning part 1215 and the second positioning part 1216, so that the stability and the reliability of the assembled end head main body 121 are ensured.

As an example, one of the first positioning portion 1215 of the left housing 121c and the second positioning portion 1216 of the right housing 121d may be a positioning boss, the other may be a positioning groove, the positioning boss is opposite to the positioning groove, and the contours of the positioning boss and the positioning groove are matched. When the left shell 121c and the right shell 121d are spliced, the positioning boss is clamped into the positioning groove, so that accurate alignment of the left shell 121c and the right shell 121d is realized.

In other examples, one of the first positioning portion 1215 and the second positioning portion 1216 may be a positioning post, and the other may be a positioning hole, and the positioning post may be inserted into the positioning hole to position the left housing 121c and the right housing 121 d. Alternatively, the first positioning portion 1215 and the second positioning portion 1216 may be engaged by an elastic snap and a groove, so that not only the left housing 121c and the right housing 121d can be positioned, but also the left housing 121c and the right housing 121d can be initially connected.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims

1. A lens tube end for install the distal end at the lens tube main part, the lens tube main part includes the inner tube and overlaps and establish the outer tube outside the inner tube, the inner tube with have annular space passageway between the outer tube, its characterized in that, lens tube end includes:

auxiliary equipment is arranged in the mounting hole;

the front end face of the end head main body extends out of the front end face of the end head main body to form a turbulent flow part, the turbulent flow part bends towards the center of the front end face of the end head main body, and the turbulent flow part shields at least part of ports of the second channel.

2. The lens barrel head according to claim 1, wherein the spoiler is located at a side edge of the second passage near the port in a radial direction of the front end surface of the head body.

3. The lens barrel head according to claim 2, wherein an inner wall surface of the spoiler extends along an inner wall of the second channel on a side close to an edge of the head body; the inner wall surface of the spoiler is a side wall surface of the spoiler facing the front end surface of the end head main body.

4. The lens barrel head of claim 2, wherein the spoiler completely obstructs a port of the second channel.

5. The lens tube end according to any one of claims 1 to 4, wherein the spoiler comprises a straight section and an arc section connected in sequence from a connecting end of the spoiler to a free end of the spoiler, the straight section extending in an extending direction of the end body, the arc section being curved toward a center of a front end surface of the end body;

the connecting end of the spoiler is one end, connected with the front end face of the end head main body, of the spoiler, and the free end of the spoiler is one end, far away from the end head main body, of the spoiler.

6. The lens tube tip of claim 5, wherein the radius of the arcuate segment is 0.6mm-1.0mm.

7. The lens tube tip of claim 5, wherein the width of the arcuate segment increases gradually from the end of the arcuate segment connected to the straight segment to the other end of the arcuate segment, and the arcuate segment transitions away from the two side arcs of the end of the straight segment.

8. The lens tube tip of claim 7, wherein a difference between a maximum width of the arcuate segment and a width of the straight segment is 0.2mm to 0.5mm.

9. The lens tube end according to any one of claims 1 to 4, wherein the free end of the spoiler is inclined in a direction away from the front end surface of the end body, and an angle between an extending direction of the free end of the spoiler and the front end surface of the end body is 20 ° -30 °.

10. The lens tube end of any one of claims 1-4, wherein a spacing between a free end of the spoiler and a central axis of the end body is 0.8mm-1.2mm.

11. The lens tube end of any one of claims 1-4, wherein a spacing between a free end of the spoiler and a front end surface of the end body is 1.5mm-2.5mm.

12. The lens tube end of any one of claims 1-4, wherein the spoiler has a thickness of 0.4mm-0.6mm.

13. The lens tube end of any one of claims 1-4, wherein from one end of the end body facing the lens tube body to the other end of the end body, the end body comprises a first section and a second section arranged in sequence, the first section extending in an axial direction of the lens tube body, the second section having an included angle with the first section.

14. The lens tube tip of claim 13, wherein the second segment is inclined to a side where the second channel is located, the first channel extends in an axial direction of the lens tube body, and a plane where a port of the first channel is located is parallel to an outer wall of the side where the second channel is located.

15. The lens barrel head of any one of claims 1-4, further comprising:

the valve comprises a connecting section and a movable section which are sequentially arranged, wherein the connecting section is connected with the outer side wall of one side where the first channel is located, and the movable section is movably arranged at the port of the first channel in a blocking manner and is used for opening or blocking the port of the first channel.

16. The lens barrel head of claim 15, further comprising:

17. A scope comprising a scope body and a scope tip according to any one of claims 1-16, said scope tip being mounted at a distal end of said scope body.

18. An endoscope comprising an operating handle and the scope of claim 17, wherein the proximal end of the scope is mounted to the operating handle and the distal end of the scope extends away from the operating handle.