CN116965753A - Endoscope tube and endoscope - Google Patents

Abstract

The application provides a lens tube and an endoscope, wherein the lens tube comprises: the mirror body comprises an inner pipe and an outer pipe which extend linearly, the outer pipe is sleeved outside the inner pipe, the outer wall of the first side of the inner pipe is close to the inner wall of the first side of the outer pipe, and an annular channel is arranged between the inner pipe and the outer pipe; the first end of the adapter is connected to the far end of the mirror body, the second end of the adapter stretches out in a direction away from the mirror body, and the second end and the first end are staggered in the axial direction of the mirror body; the adaptor comprises a first channel and a second channel which are mutually separated, the first channel is communicated with the inner pipe, and the second channel is communicated with the annular channel; the end is connected to the second end of the adapter, extends along a straight line and is communicated with the second channel. The scope of the field of view of the lens tube is larger, and the manufacturing difficulty is smaller.

Description

Endoscope tube and endoscope

Technical Field

The application relates to the technical field of medical instruments, in particular to 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 lens 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 lens, transmits signals acquired by the lens to external equipment electrically connected with the endoscope, and displays images of the target part by utilizing the external equipment so as to help the doctor to know and judge the condition of the target part.

However, in the conventional endoscope, the structural strength of the scope tube is low and the manufacturing difficulty is high.

Disclosure of Invention

The application provides a lens tube and an endoscope, wherein the field of view of the lens tube is larger, and the manufacturing difficulty is smaller.

An aspect of the present application provides a mirror tube including:

the mirror body comprises an inner pipe and an outer pipe which extend linearly, the outer pipe is sleeved outside the inner pipe, the outer wall of the first side of the inner pipe is close to the inner wall of the first side of the outer pipe, and an annular channel is arranged between the inner pipe and the outer pipe;

the first end of the adapter is connected to the far end of the mirror body, the second end of the adapter stretches out in a direction away from the mirror body, and the second end and the first end are staggered in the axial direction of the mirror body; the adaptor comprises a first channel and a second channel which are mutually separated, the first channel is communicated with the inner pipe, and the second channel is communicated with the annular channel;

the end is connected to the second end of the adapter, extends along a straight line and is communicated with the second channel.

In one possible embodiment, the first channel extends straight along the extension direction of the inner tube.

In one possible embodiment, the adapter comprises a first section, a middle section and a second section arranged in sequence from a first end of the adapter to a second end of the adapter;

The first section extends along the axial direction of the lens body, an included angle is formed between the middle section and the first section, and the second section extends along a straight line.

In one possible embodiment, the second section is parallel to the first section.

In one possible implementation, a notch is formed on the side wall of the adapter, and the notch is communicated with the first channel;

the lens tube further comprises a valve, the valve comprises a connecting section and a movable section which are sequentially arranged along the extending direction of the adapter, the connecting section is connected to the outer wall of the adapter, the movable section shields the notch, and the movable section can move relative to the connecting section.

In one possible embodiment, the outer side wall of the tip has an extension groove, and the extension groove communicates with the notch, and the movable segment shields at least a portion of the extension groove.

In one possible embodiment, the extension slot extends through both ends of the tip, the free end of the movable section being flush with the front end of the tip;

the free end of the movable section is one end of the movable section far away from the connecting section, and the front end of the end head is one end of the end head deviating from the adapter.

In one possible embodiment, from one end of the connection section connected with the movable section to the other end of the connection section, the connection section includes an extension section and a reinforcement section that are sequentially disposed, and the width of the reinforcement section is greater than the width of the extension section.

In one possible implementation manner, the outer side wall of the adapter is provided with a mounting groove, the mounting groove is located on one side of the notch facing the mirror body, the mounting groove is communicated with the notch, the mounting groove is matched with the contour of the connecting section, and the connecting section is connected in the mounting groove.

In one possible embodiment, the lens tube further comprises:

the elastic sleeve is sleeved outside the lens body, the adapter and the end head and clings to the valve.

In one possible embodiment, the adapter has a first plug section, the first channel extends out of the second channel toward one end of the mirror body to form a first plug section, an inner wall of the first plug section is attached to an outer wall of the inner tube, and a first side outer wall of the first plug section is attached to a first side inner wall of the outer tube.

In one possible embodiment, the adapter has a second plug section, the second channel extends out of the first channel towards one end of the tip to form a second plug section, the one end of the tip towards the adapter has a plug groove, and the outer side wall of the second plug section is fitted with the groove wall of the plug groove.

In one possible embodiment, the end of the head facing the adapter has a second plug section, the end of the second channel facing the head has a plug groove, the plug groove communicates with the second channel, and the outer wall of the second plug section engages with the groove wall of the plug groove.

In one possible embodiment, the tip has at least one mounting hole, and the scope further includes at least one auxiliary device mounted in the corresponding mounting hole.

In one possible embodiment, the auxiliary device comprises a camera.

In one possible embodiment, the optical axis of the camera is parallel to the axial direction of the mirror body.

In one possible implementation manner, a limiting wall is arranged on one side, close to the end head, of the adapter, the limiting wall is arranged on the periphery of the second channel in a surrounding mode, and the auxiliary equipment abuts against the limiting wall.

In one possible embodiment, the end head is provided with at least one flow guiding hole which penetrates through both ends of the end head and is communicated with the annular passage.

In one possible embodiment, the aperture of the flow guiding hole gradually decreases from the flow guiding hole towards one end of the adapter to the other end of the flow guiding hole.

Another 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 extending away from the operating handle.

The application provides a scope tube and an endoscope, wherein the scope tube comprises a scope body, an adapter and an end head, the scope body comprises an inner tube and an outer tube, the outer tube is sleeved outside the inner tube, the outer wall of a first side of the inner tube is close to the inner wall of a first side of the outer tube, and an annular channel is formed between the outer tube and the inner tube. The first end of the adapter is connected to the far end of the lens body, the end head is connected to the second end of the adapter, and the second end and the first end of the adapter are staggered in the axial direction of the lens body, so that the movable space of auxiliary equipment arranged at the end head is larger, and the view field range of the lens tube can be enlarged. And moreover, the whole mirror body can keep linearly extending, the mirror body does not need to be bent, the structural strength of the mirror body is high, the manufacturing difficulty is small, the mirror tube is easy to assemble, the structural strength of the whole mirror tube can be improved, and the manufacturing difficulty of the mirror tube is reduced.

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 at A-A in FIG. 5;

FIG. 7 is a block diagram of an angle of view of an adapter according to an embodiment of the present application;

FIG. 8 is an assembled structure diagram of a mirror, an adapter, a tip, and a shutter according to an embodiment of the present application;

FIG. 9 is a cross-sectional view of the assembled structure shown in FIG. 8 taken along line A-A of FIG. 5;

FIG. 10 is a block diagram of a view of an adapter according to an embodiment of the present application;

FIG. 11 is a block diagram of one view of a tip provided in an embodiment of the present application;

Fig. 12 is a block diagram of another view of a tip provided in an embodiment of the present application.

Reference numerals illustrate:

10-an endoscope;

100-mirror tube; 200-operating a handle;

110-mirror body; 120-adaptor; 120 a-a first channel; 120 b-a second channel; 130-end; 140-auxiliary equipment; 150-a shutter; 160-an elastic sleeve; 210-an operation section; 220-a grip; 201-a liquid inlet pipe; 202-a liquid outlet pipe;

111-an inner tube; 112-an outer tube; 113-annulus passage; 114-instrument channel; 121-a first section; 122-middle section; 123-second section; 124-notch; 125-mounting slots; 126-a first plug section; 127-a second plug section; 128-a limiting wall; 131-mounting holes; 132-an extension groove; 133-a plug-in groove; 134-deflector holes; 141-a camera; 151-connecting segments; 152-active segment; 211-a knob;

1511-an extension; 1512-reinforcement section.

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 a low structural strength of the scope tube and a great difficulty in manufacturing.

In view of the above, the present application provides a scope and an endoscope, the scope includes a scope body, an adapter and an end, the scope body includes an inner tube and an outer tube, the outer tube is sleeved outside the inner tube, the outer wall of the first side of the inner tube is close to the inner wall of the first side of the outer tube, and an annular channel is formed between the outer tube and the inner tube. The first end of the adapter is connected to the far end of the lens body, the end head is connected to the second end of the adapter, and the second end and the first end of the adapter are staggered in the axial direction of the lens body, so that the movable space of auxiliary equipment arranged at the end head is larger, and the view field range of the lens tube can be enlarged. And moreover, the whole mirror body can keep linearly extending, the mirror body does not need to be bent, the structural strength of the mirror body is high, the manufacturing difficulty is small, the mirror tube is easy to assemble, the structural strength of the whole mirror tube can be improved, and the manufacturing difficulty of the mirror tube is reduced.

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 for observing a condition of a target site in a human body, and converting an acquired optical signal into a digital signal.

The endoscope 10 includes a scope tube 100 and an operation handle 200, the scope tube 100 having proximal and distal ends at its axial ends, the proximal end of the scope tube 100 being mounted in the operation handle 200, and the distal end of the scope tube 100 extending 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.

Specifically, the distal end of the scope 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.

Illustratively, the endoscope 10 may be sealed in a sterile bag prior to use to ensure cleanliness and hygiene of the endoscope 10.

With continued reference to fig. 2, 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.

Referring to fig. 2 to 4, in the present embodiment, a scope tube 100 of an endoscope 10 may include a scope body 110, an adapter 120, and a tip 130. The lens body 110 is a main structure of the lens tube 100, the proximal end and the distal end of the lens body 110 correspond to the proximal end and the distal end of the lens tube 100, the proximal end of the lens body 110 is connected to the operation portion 210 of the operation handle 200, the distal end of the lens body 110 protrudes in a direction away from the operation portion 210 (see fig. 1), and the axial direction of the lens body 110 may be parallel to the axial direction of the operation portion 210. The first end of the adaptor 120 is connected to the distal end of the mirror body 110, the second end of the adaptor 120 extends away from the mirror body 110, and the tip 130 is connected to the second end of the adaptor 120.

The mirror body 110 may be made of a metal material to ensure structural strength and reliability of the mirror body 110. The mirror body 110 is hollow, so that a passage through which a surgical instrument passes can be formed, and the circulation of liquid can be realized, so that the requirement of surgery can be met; the adaptor 120 may be fixed by using an opening at the distal end of the mirror body 110.

The adaptor 120 may be made of a metal material (e.g., memory metal) or a resin material having a certain hardness, and for example, the adaptor 120 and the mirror body 110 may be welded, adhered or connected through a vulcanization process.

Because the tip 130 is located at the distal end of the lens tube 100, the tip 130 is easy to touch tissues and channels in the body during operation, and thus the tip 130 can be made of an elastic material with a certain strength, for example, the tip 130 can be a silica gel piece or a rubber piece, so as to avoid hard contact between the tip 130 and the tissues in the body, avoid discomfort to the user, and prevent the tip 130 from damaging the tissues in the body. The tip 130 and the adapter 120 may be joined by an adhesive or vulcanization process.

As shown in connection with fig. 2 and 4, at least one auxiliary device 140 is mounted on the tip 130, and the auxiliary device 140 is secured to the distal end of the scope 100 by the tip 130. By way of example, the auxiliary device 140 mounted on the tip 130 may include a camera 141, a light source, a range finder, etc., which may be used to obtain images and related information of the relevant site in the body.

The end 130 is provided with a mounting hole 131, and the auxiliary device 140 is mounted in the mounting hole 131, for example, an outer side wall of the auxiliary device 140 is adhered to a wall of the mounting hole 131. The number of the mounting holes 131 formed in the tip 130 may be one or more than two, and each auxiliary device 140 is mounted in the corresponding mounting hole 131.

In fig. 4, taking the auxiliary device 140 mounted on the tip 130 as the camera 141 as an example, the mounting hole 131 may be formed in the middle area of the tip 130 to ensure that the mounting hole 131 has enough space to mount the camera 141, and the hole wall of the mounting hole 131 forms a complete enclosure on the periphery of the camera 141, so as to ensure that the camera 141 is firmly mounted.

Of course, other devices such as the light source and the range finder described above may be mounted on the tip 130 in addition to the camera 141 mounted on the tip 130. For example, the light source may be mounted by forming another mounting hole 131 in the tip 130, for example, by forming a mounting hole 131 having a smaller diameter on the circumferential side of the mounting hole 131 for mounting the camera 141, and mounting the light source by using the mounting hole 131. Alternatively, the light source may be integrated on the camera 141, so only one mounting hole 131 needs to be formed on the tip 130, which is beneficial to the structural design of the tiny components such as the tip 130.

As shown in fig. 3 and 4, in the present embodiment, the mirror body 110 may extend along a straight line, the mirror body 110 may extend along an axial direction of the operation portion 210 (see fig. 1) of the operation handle 200, and for example, the mirror body 110 may be disposed coaxially with the operation portion 210. In addition, the second end and the first end of the adaptor 120 may be offset in the axial direction of the lens body 110, that is, the adaptor 120 is bent as a whole, and the second end of the adaptor 120 is offset from the axis of the lens body 110. Thus, for the tip 130 attached to the second end of the adapter 120, the tip 130 may extend in a straight line, with the second end of the adapter 120 being offset from the axis of the mirror 110, as well as the tip 130 being offset from the axis of the mirror 110.

By sequentially connecting the adaptor 120 and the tip 130 to the distal end of the scope 110, and designing the adaptor 120 to be bent so that the tip 130 is offset from the axis of the scope 110, a curved distal end of the scope 100 is formed, in other words, the distal end of the scope 100 is curved, and the distal end of the scope 100 is offset from the axis of the scope 100.

In one aspect, the scope 100 may accommodate differently configured lumens within the body to increase the range of applications for the endoscope 10. Taking endoscope 10 as a hysteroscope for example, the distal end of curved scope tube 100 may better match the configuration of Gong Qiangkou to vaginal connection locations.

On the other hand, the movable range of the end 130 is enlarged, when the lens tube 100 is rotated, the area of the rotating circumferential surface of the end 130 is larger, and for the camera 141 mounted on the end 130, the view field range of the camera 141 is enlarged, and the direction of the camera 141 can be adjusted according to the requirement, so that the condition of comprehensively and perfectly observing the target part is facilitated.

In this embodiment, by connecting the adaptor 120 to the distal end of the lens body 110, the adaptor 120 has a smaller size and a smaller manufacturing difficulty, and the flexible design of the adaptor 120 is easy. By designing the adapter 120 to be bent, the adapter 120 is used to form the curved distal end of the lens tube 100, without requiring the curved design of the lens body 110, the lens body 110 remains generally straight. Thus, the mirror body 110 can maintain high structural strength, and the manufacturing difficulty of the mirror body 110 is smaller.

In addition, by setting the adaptor 120 to be curved, the end 130 is prevented from being curved, and for the end 130 with a shorter size, the manufacturing difficulty of the end 130 is reduced, the structural design of the end 130 is also facilitated, for example, the difficulty of processing the mounting hole 131 on the end 130 can be reduced. The end 130, the adapter 120 and the lens body 110 are easy to be 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.

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 cross-sectional areas of the adapter 120 and the end 130 are also kept sufficient, the structural strength of the lens tube 100 is improved, and the phenomenon of local stress concentration of the lens tube 100 is avoided. 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 at A-A in fig. 5. Referring to fig. 5 and 6, the scope 110 includes an inner tube 111 and an outer tube 112, the outer tube 112 is sleeved outside the inner tube 111, the outer tube 112 and the inner tube 111 extend along a straight line, 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 passage through which a surgical instrument passes and a passage for installing the adaptor 120, and can separate and form a liquid inlet passage and a liquid outlet passage which are mutually independent so as to prevent liquid entering the body of the endoscope tube 100 from being mixed with liquid discharged from the body through the endoscope tube 100 and avoid pollution caused thereby.

Corresponding to the inner tube 111 and the outer tube 112 of the mirror body 110, the adapter 120 may include a first passage 120a and a second passage 120b spaced apart from each other, the first passage 120a of the adapter 120 communicating with the inner tube 111, and the second passage 120b of the adapter 120 communicating with an annular passage 113 formed between the outer tube 112 and the inner tube 111.

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.

In this regard, the end of the first channel 120a of the adaptor 120 facing away from the inner tube 111 may be in communication with the outside world so that the surgical instrument extends from the inner tube 111 through the first channel 120a of the adaptor 120 and into the target site within the body. Correspondingly, the end 130 can be arranged corresponding to the second channel 120b of the adaptor 120, and the end 130 can be blocked at the end of the second channel 120b, so as to avoid the influence of the end 130 on the instrument channel 114, and ensure that the surgical instrument can smoothly extend into the body through the inner tube 111 and the adaptor 120.

As shown in fig. 6, in order to facilitate blocking the tip 130 at the port of the second channel 120b of the adaptor 120 and to avoid the tip 130 from blocking the first channel 120a of the adaptor 120, the first channel 120a and the second channel 120b may be separated at two sides of the adaptor 120 in the radial direction. In this way, the second channel 120b is located at one side of the adaptor 120, so that the design and installation of the end 130 are facilitated, and the end 130 may be located at the side of the first channel 120a, so that the first channel 120a is not blocked, and other structures are also facilitated at the port of the first channel 120 a.

In this embodiment, the inner tube 111 may be designed close to one side of the outer tube 112, corresponding to the layout design of the first channel 120a and the second channel 120b of the adaptor 120. For convenience of description, the first side and the second side of the mirror body 110 are defined, where the first side and the second side are opposite sides of the mirror body 110 in the radial direction, the first side outer wall of the inner tube 111 may be close 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.

With continued reference to fig. 6, in the present embodiment, the first channel 120a of the adaptor 120 may also extend linearly along the extending direction of the inner tube 111, on the basis that the inner tube 111 extends linearly. So arranged, in the circumferential direction of the scope 110, the instrument channel 114 formed by the first channel 120a of the adaptor 120 and the inner tube 111 extends along a straight line all the time, and the cross-sectional areas of all the parts of the instrument channel 114 are kept consistent, so that the scope 100 can be used for the instrument channel 114 with a larger cross-sectional area (diameter) on the premise that the scope 100 maintains a smaller size.

Illustratively, in this embodiment, the outer diameter of the lens tube 100 (the lens body 110) may be equal to or less than 5mm, for example, the outer diameter of the lens 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 120a of the adaptor 120) 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.

As for the structural design of the adaptor 120, as shown in fig. 4 and 6, in this embodiment, from the first end of the adaptor 120 to the second end of the adaptor 120, the adaptor 120 may include a first section 121, a middle section 122 and a second section 123 sequentially disposed. Wherein, the adaptor 120 may be connected to the distal end of the lens body 110 by the first section 121, and the tip 130 may be connected to the second section 123 of the adaptor 120, the first section 121 and the second section 123 of the adaptor 120 may each extend along a straight line, and the intermediate section 122 serves as a transition between the first section 121 and the second section 123 for deviating the second section 123 from the axis of the first section 121, thereby forming a curved distal end of the lens tube 100.

The first section 121 of the adapter 120 may extend along the axis of the mirror body 110 to facilitate attachment of the adapter 120 to the distal end of the mirror body 110. The intermediate section 122 may be angled with respect to the first section 121 such that the second section 123 is offset from the axis of the first section 121 and the tip 130 attached to the end of the second section 123 may be disposed coaxially with the second section 123.

As for the extending direction of the second section 123 of the adaptor 120, in some embodiments, the second section 123 of the adaptor 120 may be parallel to the first section 121, and in this case, the tip 130 connected to the end of the second section 123 of the adaptor 120 may also extend in a direction parallel to the axial direction of the mirror body 110. In this way, the positioning of the auxiliary device 140 on the tip 130 is facilitated, and the auxiliary device 140 can be better mapped to the target site.

Taking the mounting hole 131 for mounting the camera 141 as an example, the mounting hole 131 may be opened along the axial direction of the tip 130 such that the axis of the mounting hole 131 is parallel to the axis of the lens body 110, and further, the optical axis of the camera 141 mounted in the mounting hole 131 may be parallel to the axial direction of the lens tube 100. In this way, the image collected by the camera 141 can be ensured to be the image right in front of the distal end of the lens tube 100, and the image collected by the camera 141 can be ensured to be accurately corresponding to the target part.

In other embodiments, the second section 123 of the adaptor 120 may be inclined with respect to the first section 121, for example, from one end of the second section 123 connected to the middle section 122 to the other end of the second section 123, and the second section 123 may extend slightly and outwardly inclined to increase the area of the circumferential surface that can be covered when the second end of the adaptor 120 rotates, and further increase the area of the circumferential surface that can be covered when the tip 130 rotates, and increase the field of view of the camera 141 mounted on the tip 130.

At this time, the tip 130 coaxially disposed with the second section 123 of the adaptor 120 is inclined with respect to the axial direction of the lens body 110, and if the camera 141 is disposed along the extending direction of the tip 130, the optical axis of the camera 141 is parallel to the axial direction of the tip 130, and the optical axis of the camera 141 is inclined with respect to the axial direction of the lens tube 100, the field of view range of the camera 141 is not centered on the area directly in front of the distal end of the lens tube 100, and the collected image is not directly in front of the distal end of the lens tube 100, which results in that the operator cannot accurately locate the portion corresponding to the collected image.

In this regard, the orientation of the camera 141 may be set so that the optical axis of the camera 141 is parallel to the axial direction of the lens body 110, for example, a mounting hole 131 extending in the axial direction of the lens body 110 may be formed in the tip 130, and the axis of the mounting hole 131 is parallel to the axis of the lens body 110 as the mounting hole 131 of the camera 141, so as to ensure that an image collected by the camera 141 is an image directly in front of the distal end of the lens tube 100.

In addition, in some embodiments, in order to adapt to some of the lumens in the body, for example, when the endoscope 10 is used as a hysteroscope to examine the position of the fallopian tube, it is necessary to have the camera 141 with an oblique viewing angle, that is, it is necessary to set the optical axis of the camera 141 to be inclined to the axis of the lens body 110, and in this case, the optical axis of the camera 141 may also be inclined to the axis of the lens body 110. For example, the camera 141 may be provided in such a manner that the optical axis is adjustable by designing the structure of the adaptor 120 (or the tip 130) or the mounting manner of the camera 141.

FIG. 7 is a block diagram of an angle of view of an adapter according to an embodiment of the present application; FIG. 8 is an assembled structure diagram of a mirror, an adapter, a tip, and a shutter according to an embodiment of the present application; fig. 9 is a cross-sectional view of the assembled structure shown in fig. 8 taken along A-A in fig. 5.

Referring to fig. 7, in order to allow the first channel 120a of the adaptor 120 to communicate with the outside, a notch 124 is further formed on the sidewall of the adaptor 120, and the notch 124 communicates with the first channel 120a, in other words, the notch 124 corresponds to a port of the first channel 120a, and the surgical instrument may extend out of the distal end of the endoscope 10 through the notch 124 to perform an operation on a target site in the body.

The notch 124 may extend to the second end of the adaptor 120, and the edge of the notch 124 may be disposed obliquely, so that the notch 124 may occupy a majority of the axial area of the adaptor 120, so that the notch 124 has a smooth edge, and discomfort caused by the edge of the notch 124 is avoided. Moreover, the slope of the edge of the notch 124 may be substantially parallel to the outer wall of the other side of the adaptor 120, so as to substantially maintain the outer diameter of each axial portion of the adaptor 120 uniform.

As shown in fig. 7 and 8, in this embodiment, on the basis that the side wall of the adaptor 120 is provided with the notch 124 to form the port of the first channel 120a, the lens 100 may further be provided with a shutter 150, where the shutter 150 is connected to the outer wall surface of the adaptor 120, and the shutter 150 may cover the notch 124 of the adaptor 120. The shutter 150 may be made of an elastic material, and the shutter 150 may be elastically deformed to expose or block the notch 124 of the adaptor 120, which corresponds to the port of the first passage 120a that can be opened or closed.

Specifically, the shutter 150 may be close to the outer wall surface of the portion where the notch 124 is located in a natural state, so as to block the notch 124 and close the port of the first channel 120 a; when the shutter 150 is subjected to an external force, the shutter 150 may deflect away from the adapter 120 to expose the notch 124 and open the port of the first passage 120 a.

By such arrangement, when the surgical instrument is not in use, the notch 124 is shielded by the shutter 150, so that the cleanliness of the endoscope 10 can be improved, and the endoscope 10 can be prevented from being contaminated or cross-infection. When the surgical instrument is needed, the rear door can be opened when the surgical instrument passes through the instrument channel 114 and reaches the notch 124, and at this time, the valve 150 opens the port of the first channel 120a, so that the surgical instrument can pass out of the endoscope 10 to operate the target site in the body.

It should be noted that even if the shutter 150 covers the notch 124 of the adaptor 120, the shutter 150 does not completely seal the notch 124, and a micro-aperture is defined between the shutter 150 and the wall surface of the adaptor 120, for example, the shutter 150 is designed to have an arc-shaped structure matching the outer wall of the adaptor 120, and when the shutter 150 covers the notch 124, the cross section of each portion of the lens tube 100 along the length direction is in a regular circle. The flap 150 uses an arc with the notch 124 to enclose an aperture (shown in connection with fig. 4 and 9) to facilitate fluid 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 that liquid is required to flow, for example, when the hysteroscope is only used for examination, the uterine fluid is required to enter the uterine cavity and flow 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 valve 150 and the notch 124 of the connector 120.

Referring to fig. 8 or 9, the shutter 150 may include a connection section 151 and a movable section 152 sequentially disposed along an extension direction of the adaptor 120, the connection section 151 may be attached to an outer wall of the adaptor 120, the shutter 150 is connected to the adaptor 120 by means of the connection section 151, the movable section 152 corresponds to the notch 124, the movable section 152 shields the notch 124, and the movable section 152 moves relative to the connection section 151 to shield or expose the notch 124, and thus, close or open a port of the first passage 120 a.

In order to facilitate the deformation of the movable section 152 of the shutter 150, the length of the movable section 152 may be increased, for this purpose, an extension groove 132 may be provided on the outer sidewall of the end 130, the extension groove 132 is correspondingly communicated with the notch 124, and the movable section 152 may extend to the location of the extension groove 132 and may cover at least part of the extension groove 132. Thus, the extension length of the movable section 152 is greater, which enhances the deformability of the movable section 152, and ensures that the movable section can be easily pushed open, so as to ensure that the port of the first channel 120a is smoothly opened.

The groove bottom of the extending groove 132 on the end 130 may extend along the wall surface of the portion where the notch 124 is located, and the transition between the adaptor 120 and the end 130 may be smooth, so as to avoid interference between the connection portion of the adaptor 120 and the end 130 and the shutter 150. The extension groove 132 of the tip 130 extends as the instrument channel 114, and the groove bottom of the extension groove 132 extends along the wall surface of the portion where the notch 124 is located, whereby the uniformity of the cross-sectional area of the instrument channel 114 can be maintained.

As an example, the extending groove 132 on the outer wall of the tip 130 may extend through both ends of the tip 130, and the free end of the movable section 152 of the shutter 150 (the end of the movable section 152 facing away from the connection section 151) may extend toward the front end of the tip 130 (the end of the tip 130 facing away from the adapter 120) as much as possible, in other words, the free end of the movable section 152 is close to the front end of the tip 130, for example, the free end of the movable section 152 is substantially flush with the front end of the tip 130. In this way, the circumferential side of tip 130 is smoother, facilitating entry of resected tissue into instrument channel 114, and avoiding discomfort to the human body.

As for the shape of the connection section 151 of the shutter 150, referring to fig. 8, the connection section 151 may include an extension section 1511 and a reinforcement section 1512 disposed in sequence from one end of the connection section 151 connected with the movable section 152 to the other end of the connection section 151. The width of the extension section 1511 may be narrower so as to smoothly transition from the connection section 151 to the movable section 152, so that the movable section 152 may be formed to be narrower, so that the movable section 152 is easy to deform, abrupt size changes at the connection between the connection section 151 and the movable section 152 are avoided, and reliability of the shutter 150 is ensured. The width of the reinforcement section 1512 may be greater than the width of the extension section 1511 to increase the contact area between the connection section 151 and the outer wall of the adapter 120, and improve the connection strength between the shutter 150 and the adapter 120.

Referring to fig. 7, in order to position the shutter 150, the outer sidewall of the adaptor 120 is further provided with a mounting groove 125, the mounting groove 125 is located at a side of the notch 124 facing the mirror body 110, the mounting groove 125 is communicated with the notch 124, and the mounting groove 125 corresponds to the connection section 151 of the adaptor 120 and has a matched profile. Referring to fig. 8, the connection section 151 of the adaptor 120 is attached to the mounting groove 125 on the outer sidewall of the adaptor 120, and the extension section 1511 of the connection section 151 extends to the position where the mounting groove 125 communicates with the notch 124, so that the movable section 152 is blocked at the position where the notch 124 is located.

On the basis that the shutter 150 is connected to the adaptor 120 to block the notch 124, in this embodiment, the lens tube 100 further includes an elastic sleeve 160 (see fig. 4 and 6), the elastic sleeve 160 is sleeved outside the lens body 110, the adaptor 120 and the end 130, and the elastic sleeve 160 may be made of elastic materials such as rubber, silica gel, etc., and is tightly attached to the outer walls of the lens body 110, the adaptor 120 and the end 130. The elastic force of the elastic sleeve 160 makes the movable section 152 of the valve 150 cling to the notch 124, so as to ensure that the valve 150 stably covers the notch 124, and the cross section of each part of the lens 100 along the length direction is in a regular circle.

Because the elastic sleeve 160 has elasticity, when the surgical instrument passes through, the valve 150 can be pushed open to cover the movable section 152 of the notch 124, and the port of the first channel 120a is opened; after the surgical instrument is removed, the movable section 152 of the valve 150 is reset under the action of self elastic force, the elastic sleeve 160 can also play an auxiliary resetting role on the movable section 152, and the elastic sleeve 160 extrudes the movable section 152 to enable the movable section 152 to be clung to the wall surface where the notch 124 is located.

In addition, referring to fig. 7, a side of the adaptor 120 near the tip 130 may have a limiting wall 128, referring to fig. 9, the limiting wall 128 may be surrounded on a peripheral side of the second channel 120b, the limiting wall 128 may be used to limit the auxiliary device 140 mounted on the tip 130, and the auxiliary device 140 may be abutted on the limiting wall 128, so as to prevent the auxiliary device 140 from entering the second channel 120 b.

In some embodiments, the stop wall 128 can also extend toward the first end of the adapter 120, e.g., the stop wall 128 can extend to a port at the first end of the second channel 120b, and the stop wall 128 can extend in the axial direction of the mirror body 110. In this way, the limiting wall 128 reduces the cross-sectional area of the second channel 120b, so that each part of the second channel 120b in the extending direction maintains a uniform cross-sectional area, which is helpful to increase the flow rate of the liquid in the second channel 120b, so that the flow rate of the liquid in the second channel 120b is more uniform, and further, the usability of the endoscope 10 is improved.

In order to improve the overall structural strength of the lens tube 100, the connection parts between the adaptor 120 and the lens body 110 and between the adaptor 120 and the end 130 can be overlapped with each other, in other words, the side wall of the adaptor 120 and the side wall of the lens body 110 and the side wall of the adaptor 120 and the side wall of the end 130 are bonded and connected, so as to increase the contact area between every two, enhance the connection strength between every two, and ensure the overall reliability of the lens tube 100.

FIG. 10 is a block diagram of a view of an adapter according to an embodiment of the present application; FIG. 11 is a block diagram of one view of a tip provided in an embodiment of the present application; fig. 12 is a block diagram of another view of a tip provided in an embodiment of the present application.

Referring to fig. 10, for the connection of the first end of the adaptor 120 with the mirror body 110, the first end of the adaptor 120 has a first insertion section 126, the first channel 120a extends out of the second channel 120b toward one end of the mirror body 110, and the portion of the first channel 120a extending out forms the first insertion section 126. Referring to fig. 9, the inner side wall of the first plugging section 126 is attached to the outer side wall of the inner tube 111, and the outer wall of the first side (corresponding to the first side of the lens body 110) of the first plugging section 126 is attached to the inner wall of the first side of the outer tube 112, and the first plugging section 126 of the adaptor 120 is clamped at the distal end of the lens body 110, so that a sufficient attaching area is provided between the inner wall of the first plugging section 126 and the outer wall of the inner tube 111, and between the outer wall of the first plugging section 126 and the inner wall of the outer tube 112, so that the first plugging section 126 and the lens body 110 can be firmly connected.

Referring to fig. 7, for connection of the second end of the adaptor 120 to the tip 130, in some embodiments, the second end of the adaptor 120 has a second plugging section 127, the second channel 120b extends out of the first channel 120a toward one end of the tip 130, the portion of the second channel 120b extending out forms the second plugging section 127, referring to fig. 11, the tip 130 has a plugging slot 133 toward one end of the adaptor 120, the second plugging section 127 of the adaptor 120 is inserted into the plugging slot 133 of the tip 130 (see fig. 9), and the outer side wall of the second plugging section 127 is fitted with the slot wall of the plugging slot 133, so as to realize connection of the adaptor 120 to the tip 130.

In addition to the manner in which the second end of the adapter 120 is inserted into the tip 130, in other embodiments, the tip 130 may be mounted to the second end of the adapter 120 by inserting the tip 130 into the second end of the adapter 120. At this time, contrary to the foregoing manner, the end of the adaptor 120 facing the end 130 may have the second plugging section 127, while the second end of the adaptor 120 (the end of the second channel 120b facing the end 130) may have the plugging slot 133, where the plugging slot 133 is communicated with the second channel 120b, the second plugging section 127 on the adaptor 130 is inserted into the plugging slot 133 on the second end of the adaptor 120, and the outer side wall of the second plugging section 127 is attached to the slot wall of the plugging slot 133, so as to realize the connection between the adaptor 120 and the adaptor 130.

Whether the second end of the adaptor 120 is inserted into the end 130 or the end 130 is inserted into the adaptor 120, the outer side wall of the second plugging section 127 and the wall of the plugging slot 133 have enough attaching area, so that the adaptor 120 and the end 130 can be firmly connected.

Referring to fig. 11 or 12, since the tip 130 is plugged at the port of the second channel 120b of the adaptor 120, in order to allow the annular channel 113 of the mirror body 110 to communicate with the outside, the annular channel 113 may be used as a channel through which the liquid flows, the tip 130 is further provided with a diversion hole 134, the diversion hole 134 penetrates through two axial ends of the tip 130, the diversion hole 134 communicates with the second channel 120b of the adaptor 120, and further, the diversion hole 134 communicates with the annular channel 113 of the mirror body 110, and the annular channel 113 communicates with the outside by using the diversion hole 134.

For example, according to actual requirements, one diversion hole 134 may be formed on the end 130, or more than two diversion holes 134 may be formed on the end 130. The guide holes 134 may be located at a circumferential side of the mounting holes 131, and the guide holes 134 are spaced apart from the mounting holes 131 so as not to allow liquid to enter the mounting holes 131, thereby affecting the auxiliary devices 140 installed in the mounting holes 131.

As for the design of the liquid passage in the mirror 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 and communicates with the liquid outlet tube 202. 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 120a (instrument channel 114) of the adaptor 120 are generally larger and the opening area of the notch 124 on the adaptor 120 is larger, while the cross-sectional areas of the annular channel 113 formed between the outer tube 112 and the inner tube 111 and the second channel 120b of the adaptor 120 are generally smaller, and the port of the second channel 120b is provided with the tip 130, the size of the diversion hole 134 on the tip 130 is smaller, and the fluid in the body easily flows back into the scope 100 from the port of the first channel 120a having a larger diameter. Thus, as an example, the annular channel 113 between the outer tube 112 and the inner tube 111 may be used as a liquid inlet channel, and the inner tube 111 may be used as a liquid outlet channel, where the flow guiding holes 134 on the end 130 are relatively narrow, so that the liquid may be rapidly ejected through the flow guiding holes 134.

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 diversion hole 134 of the end head 130, and the ejected liquid can also impact the lighting surface of the camera 141 to clean the lighting surface of the camera 141, remove impurities on the lighting surface of the camera 141, and ensure the definition of the image shot by the camera 141.

As for the design of the diversion hole 134 on the tip 130, the diversion hole 134 may be designed into a reduced diameter type, from one end of the diversion hole 134 facing the adaptor 120 to the other end of the diversion hole 134 (the end where the front end of the tip 130 is located), the aperture of the diversion hole 134 is gradually reduced, so that the flow area of the liquid passing through the diversion hole 134 is smaller and smaller, the flow velocity of the liquid can be increased, and the liquid is facilitated to impact the impurities on the lighting surface of the camera 141.

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 (20)

1. A lens tube, comprising:

the mirror body comprises an inner pipe and an outer pipe which extend linearly, the outer pipe is sleeved outside the inner pipe, the first side outer side wall of the inner pipe is close to the first side inner side wall of the outer pipe, and an annular space channel is arranged between the inner pipe and the outer pipe;

the first end of the adapter is connected to the far end of the mirror body, the second end of the adapter extends out in a direction away from the mirror body, and the second end and the first end are staggered in the radial direction of the mirror body; the adaptor comprises a first channel and a second channel which are mutually separated, wherein the first channel is communicated with the inner tube, and the second channel is communicated with the outer tube;

and the end head is connected with the second end of the adapter, extends along a straight line and is communicated with the second channel.

2. The lens tube of claim 1, wherein the first channel of the adapter member extends straight along the direction of extension of the inner tube.

3. The lens tube of claim 1, wherein the adapter comprises a first section, a middle section, and a second section disposed in sequence from a first end of the adapter to a second end of the adapter;

the first section extends along the axial direction of the mirror body, an included angle is formed between the middle section and the first section, and the second section extends along a straight line.

4. A lens according to claim 3, wherein the second section is parallel to the first section.

5. The lens tube of any one of claims 1-4, wherein a notch is formed in a side wall of the adapter, the notch being in communication with the first channel;

the lens tube further comprises a valve, the valve comprises a connecting section and a movable section which are sequentially arranged along the extending direction of the adapter, the connecting section is connected to the outer wall of the adapter, and the movable section shields the notch and can move relative to the connecting section.

6. The lens tube of claim 5, wherein the outer sidewall of the tip has an extension groove, and the extension groove communicates with the notch, and the movable segment shields at least a portion of the extension groove.

7. The tube of claim 6, wherein the extension slots extend through both ends of the tip, the free ends of the movable segments being flush with the front end of the tip;

the free end of the movable section is the end of the movable section far away from the connecting section, and the front end of the end head is the end of the end head far away from the adapter.

8. The lens tube of claim 5, wherein the connecting section comprises an extending section and a reinforcing section which are sequentially arranged from one end of the connecting section connected with the movable section to the other end of the connecting section, and the width of the reinforcing section is larger than that of the extending section.

9. The lens tube of claim 5, wherein a mounting groove is formed in the outer side wall of the adapter, the mounting groove is located on one side, facing the lens body, of the notch, the mounting groove is communicated with the notch, the mounting groove is matched with the contour of the connecting section, and the connecting section is connected in the mounting groove.

10. The lens tube as set forth in claim 5, further comprising:

and the elastic sleeve is sleeved outside the mirror body, the adapter and the end head and is tightly attached to the valve.

11. The lens tube of any one of claims 1-4, wherein the adapter has a first mating segment, the first channel extends out of the second channel toward one end of the lens body to form the first mating segment, an inner sidewall of the first mating segment is mated with an outer sidewall of the inner tube, and a first side outer sidewall of the first mating segment is mated with a first side inner sidewall of the outer tube.

12. A lens tube as claimed in any one of claims 1 to 4, wherein the adaptor has a second spigot section, the second passage extends out of the first passage towards one end of the tip to form the second spigot section, the one end of the tip towards the adaptor has a spigot slot, and an outer side wall of the second spigot section is in abutment with a slot wall of the spigot slot.

13. A lens tube as claimed in any one of claims 1 to 4, wherein the end of the tip facing the adaptor has a second spigot section, the end of the second channel facing the tip has a spigot groove, the spigot groove communicates with the second channel, and an outer side wall of the second spigot section is fitted with a groove wall of the spigot groove.

14. The tube of any one of claims 1-4, wherein the tip has at least one mounting hole, the tube further comprising at least one auxiliary device mounted within the corresponding mounting hole.

15. A lens according to claim 14, wherein the auxiliary device comprises a camera.

16. The lens of claim 15, wherein an optical axis of the camera is parallel to an axial direction of the lens body.

17. The lens tube of claim 14, wherein a side of the adapter adjacent to the tip has a limiting wall, the limiting wall is disposed around the second channel, and the auxiliary device is disposed against the limiting wall.

18. The lens tube of any one of claims 1-4, wherein the tip defines at least one flow bore extending through both ends of the tip and communicating with the annulus passage.

19. The lens of claim 18, wherein the aperture of the flow directing hole gradually decreases from one end of the flow directing hole toward the adapter to the other end of the flow directing hole.

20. An endoscope comprising an operating handle and the scope of any of claims 1-19, a proximal end of the scope being mounted to the operating handle, a distal end of the scope extending away from the operating handle.