End head of endoscope tube, endoscope tube and endoscope

Abstract

The invention provides an endoscope tube end, an endoscope tube and an endoscope, the endoscope tube end is used for being installed at the far end of an endoscope tube main body, the endoscope tube main body comprises an inner tube and an outer tube arranged outside the inner tube in a sleeving mode, an annular channel is formed between the inner tube and the outer tube, the endoscope tube end comprises an end body, the end body is provided with a first channel, and the first channel is used for being communicated with the annular channel; a first mounting groove and a flow guide hole are formed in the front end, away from the endoscope tube body, of the first channel and communicated with the first channel; the camera and the at least one light source are arranged in the first mounting groove, and the light source is arranged on the periphery of the camera; the lens assembly comprises a lens body and at least one shading piece, and the shading piece is installed on the lens body; the lens body is hermetically connected to the front end of the first mounting groove; and the shading piece is blocked between the lighting surface of the camera and the light source. The end of the endoscope tube is not prone to optical crosstalk, and the imaging quality is good.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a mirror tube end, a mirror tube and an endoscope. Background Art

[0002] Endoscopes such as hysteroscopes, cystoscopes, gastroscopes, colposcopes, bronchoscopes, laparoscopes, colonoscopes, and laparoscopy are inserted from outside the body through natural cavities into the human body to examine certain parts of the body.

[0003] An endoscope usually includes a tube and an operating handle. The tube is mounted on the operating handle. A camera and a light source are usually mounted on the end of the tube away from the operating handle. The light source provides light for the camera to shoot. When in use, the doctor holds the operating handle and inserts the tube into the target part of the body. The camera is used to observe the situation of the target part. The signal obtained by the camera is transmitted to an external device electrically connected to the endoscope, and the image of the target part is displayed by the external device to help the doctor understand and judge the situation of the target part.

[0004] However, in existing endoscopes, the light emitted by the light source in the end of the endoscope tube is easily reflected back into the lens, affecting the imaging effect. Summary of the invention

[0005] In view of the above problems, the embodiments of the present application provide a mirror tube end, a mirror tube and an endoscope, which have a simple assembly process, good sealing, are not prone to cross-talk, and have good imaging quality.

[0006] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0007] In a first aspect, an embodiment of the present application provides a mirror tube end cap, which is used to be installed at the distal end of a mirror tube body. The mirror tube body includes an inner tube and an outer tube sleeved outside the inner tube, and an annular passage is provided between the inner tube and the outer tube. The mirror tube end cap includes:

[0008] The end body has a first channel, and the first channel is used to communicate with the annular channel; the front end of the first channel away from the mirror tube body is provided with a first mounting groove and a guide hole, and the guide hole is communicated with the first channel;

[0009] The camera and at least one light source are both arranged in the first mounting groove, and the light source is arranged on the periphery of the camera;

[0010] The lens assembly comprises a lens body and at least one shading member, which is mounted on the lens body; the lens body is sealed and connected to the front end of the first mounting groove, and the shading member is blocked between the light collecting surface of the camera and the light source.

[0011] In a possible implementation manner, the lens body is provided with a second mounting groove, the second mounting groove extends from the inner surface of the lens body to the outer surface of the lens body, and the shading member is installed in the second mounting groove.

[0012] In a possible implementation manner, the second mounting groove passes through both side surfaces of the lens body in the thickness direction, and the shading member passes through both side surfaces of the lens body.

[0013] In a possible implementation, the camera includes: a lens barrel; a lens disposed in the lens barrel and located at the front side of the lens barrel; and a circuit board connected to the lens barrel and located at the rear side of the lens barrel.

[0014] In a possible implementation manner, the first light shielding surface of the light shielding member is flush with the inner side wall of the lens barrel.

[0015] In a possible implementation manner, a gap between the second light-shielding surface of the light-shielding element and the end surface of the lens barrel is smaller than a preset distance.

[0016] In a possible implementation, the guide hole is located on the upper side of the camera, and the number of light sources is two, which are respectively located on the left and right sides of the camera.

[0017] In a possible implementation, there are two shading members, and the two shading members are respectively disposed between the two light sources and the cameras.

[0018] In a possible implementation, the two shading elements are symmetrically arranged.

[0019] In a possible implementation, the shading element includes: a vertical section extending along the height direction of the lens body.

[0020] In a possible implementation, the shading member further includes: a horizontal segment connected to at least one end of the vertical segment, the horizontal segment is perpendicular to the vertical segment, and the horizontal segment extends toward the lens or the horizontal segment extends toward the light source.

[0021] In a possible implementation, it further includes: a holding frame, which is disposed in the first mounting groove, and the camera and the light source are both installed on the holding frame.

[0022] In a possible embodiment, the retaining frame includes: a camera mounting portion, having a camera mounting opening, and the camera is installed in the camera mounting opening; a light source mounting portion, connected to the outside of the camera mounting portion, and the light source is installed between the inner wall of the light source mounting portion and the outer wall of the camera mounting portion.

[0023] In a possible implementation manner, a step portion extends out from the groove wall at the front end of the first mounting groove, and the lens body is connected to the step portion.

[0024] In a possible implementation manner, the lens body is integrally formed at the front end of the first mounting groove.

[0025] In a possible implementation manner, the end head body further has a second channel, and the second channel is used to communicate with the inner tube.

[0026] In a second aspect, an embodiment of the present application provides a mirror tube, comprising a mirror tube body and the above-mentioned mirror tube end head, wherein the mirror tube end head is installed at the distal end of the mirror tube body.

[0027] In a third aspect, an embodiment of the present application provides an endoscope, comprising an operating handle and the above-mentioned scope tube, wherein the proximal end of the scope tube is mounted on the operating handle, and the distal end of the scope tube extends in a direction away from the operating handle.

[0028] The present application provides a mirror tube end, a mirror tube and an endoscope, wherein the mirror tube end comprises a end body, a camera, a light source and a lens assembly, wherein the end body has a mounting groove, and the mounting groove defines mounting space for the camera and the light source, so that the camera and the light source are mounted in the mounting groove, and the assembly process is relatively simple; the lens assembly comprises a lens body and a shading member, wherein the lens body is mounted at the front end of the mounting groove, and the light source and the camera can be encapsulated, and the shading member has good sealing performance; the shading member is disposed between the lighting surface of the camera and the surface lamp, so that the light emitted by the light source can be prevented from flowing back to the inside of the camera, interfering with the imaging signal, and reducing the imaging quality.

[0029] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the scope tube end, scope tube, and endoscope provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 A schematic diagram of the structure of an endoscope provided in an embodiment of the present application;

[0032] Figure 2 A partial exploded structural diagram of an endoscope provided in an embodiment of the present application;

[0033] Figure 3A schematic diagram of a partial structure of a mirror tube provided in an embodiment of the present application;

[0034] Figure 4 A schematic diagram of the structure of the mirror tube end provided in an embodiment of the present application;

[0035] Figure 5 A schematic structural diagram of an inner tube cross section provided in an embodiment of the present application;

[0036] Figure 6 A schematic structural diagram of another inner tube cross section provided in an embodiment of the present application;

[0037] Figure 7 A partial exploded structure of a lens tube at a viewing angle provided by an embodiment of the present application;

[0038] Figure 8 A partial exploded structural diagram of a mirror tube from another perspective provided in an embodiment of the present application;

[0039] Fig. 9 A partial cross-sectional view of a mirror tube provided in an embodiment of the present application;

[0040] Fig.10 A schematic diagram of the structure of a retainer provided in an embodiment of the present application;

[0041] Fig.11 for Fig.10 Exploded diagram of

[0042] Fig.12 A schematic structural diagram of the inner side surface of the lens body provided in an embodiment of the present application;

[0043] Fig.13 A schematic diagram of the structure of the outer side surface of the lens body provided in an embodiment of the present application;

[0044] Fig.14 A structural schematic diagram of the relative positions of the light distribution surface and the collimation surface provided in an embodiment of the present application.

[0045] Reference numerals:

[0046] 10-Endoscope;

[0047] 100-mirror tube; 100a-main body section; 100b-bent section;

[0048] 110- mirror tube body; 111- inner tube; 112- outer tube; 112a- support part; 113- annular channel;

[0049] 120- mirror tube end;

[0050] 121-end body; 1211-first channel; 1212-second channel; 1213-first mounting groove; 1213a-bottom wall; 1214-flow guide hole; 1215-step portion;

[0051] 122-camera; 1221-lens barrel; 1221a-partition; 1222-lens; 1223-circuit board; 1224-sensor;

[0052] 123-light source;

[0053] 124-lens assembly; 1241-lens body; 1241a-collimation area; 1241b-light distribution surface; 1242-light shielding member; 1242a-vertical section; 1242b-horizontal section; 1243-second mounting groove; 1244-first light shielding surface; 1245-second light shielding surface;

[0054] 125-holder; 1251-camera mounting portion; 1252-camera mounting opening; 1253-light source mounting portion;

[0055] 200 - operating handle; 201 - liquid inlet pipe; 202 - liquid outlet pipe; 210 - operating part; 211 - knob; 220 - gripping part; 230 - image processing device. DETAILED DESCRIPTION

[0056] Endoscopes such as hysteroscopes, cystoscopes, gastroscopes, colposcopes, bronchoscopes, laparoscopes, colonoscopes, and laparoscopy are inserted from outside the body through natural cavities into the human body to examine certain parts of the body.

[0057] An endoscope usually includes a tube and an operating handle. The tube is mounted on the operating handle, and a camera is usually mounted on the end of the tube away from the operating handle. When in use, the doctor holds the operating handle and extends the tube into the target part of the body, observes the situation of the target part through the camera, transmits the signal obtained by the camera to an external device electrically connected to the endoscope, and uses the external device to display the image of the target part, so as to help the doctor understand and judge the situation of the target part.

[0058] However, in the existing endoscopes, the assembly process of the end of the tube is complicated, the sealing is poor, and the light emitted by the light source is easy to backflow into the interior of the lens, affecting the imaging effect.

[0059] In order to solve the above problems, the present application provides a mirror tube end, a mirror tube and an endoscope, wherein the mirror tube end includes a terminal body, a camera, a light source and a lens assembly, wherein the terminal body has a mounting groove, and the mounting groove defines an installation space for the camera and the light source, so that the camera and the light source are installed in the mounting groove, and the assembly process is relatively simple; the lens assembly includes a lens body and a shading member, wherein the lens body is installed at the front end of the mounting groove, and the light source and the camera can be encapsulated to have good sealing performance; the shading member is blocked between the lighting surface of the camera and the surface lamp to prevent the light emitted by the light source from returning to the inside of the camera, interfering with the imaging signal, and reducing the imaging quality.

[0060] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0061] The following specific embodiments are used to describe in detail the technical solution of the present application and how the technical solution of the present application solves the above technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0062] Figure 1 and Figure 2 This is a schematic diagram of the structure of the endoscope provided in the embodiment of the present application. Figure 1 As shown, an embodiment of the present application provides an endoscope 10, which includes a scope tube 100 and an operating handle 200. The 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 operating handle 200, and the distal end of the scope tube 100 extends in a direction away from the operating handle 200. The operating handle 200 is used for an operator (such as a doctor) to hold to control the endoscope 10, and the scope tube 100 is used to extend into a target part in the human body to observe the situation of the target part.

[0063] The distal end of the mirror tube 100 is usually equipped with a camera 122 (see Figure 4 As shown), light source 123 (see Figure 4The camera 122 is used to observe the image of the target part in the body, and the light source 123 is used to illuminate the target part so that the camera 122 can observe a clear image. The operating handle 200 is equipped with a liquid circuit component (not shown in the figure) and a circuit component (not shown in the figure). The liquid circuit component is used to realize the inflow and outflow of liquid in the mirror tube 100 to meet the needs during the operation. The circuit component is used to control the operation of the camera, light source and other devices at the far end of the mirror tube 100 and control the flow rate, flow rate and other parameters of the liquid flowing through the liquid circuit component to achieve the purpose of observing local fine tissues in the body and sucking liquid.

[0064] During the operation, the scope tube 100 needs to enter the body, the operating handle 200 needs to be held by the operator, and may also contact the human epidermis or internal tissues. In addition, the liquid entering and leaving the body passes through the liquid path components installed in the operating handle 200, and the circuit components installed in the operating handle 200 need to be connected to the distal end of the scope tube 100. Therefore, in this embodiment, the endoscope 10 composed of the scope tube 100 and the operating handle 200 can be used as a disposable part.

[0065] It should be noted that the camera 122 at the far end of the mirror tube 100 is mainly used to observe the target part of the human body and convert the collected optical signal into a digital signal. In order to obtain an image of the target part of the body, the image processing device 230 is often required to cooperate. The image processing device 230 is used to convert the digital signal obtained by the camera 122 into an image signal for observation by an operator (such as a doctor).

[0066] In this embodiment, the image processing device 230 includes an image processor and a main board. The image processor is usually integrated on a main board (not shown in the figure). The main board is electrically connected to the camera 122, and the main board can be electrically connected to an external device (such as a display). The image processor converts the digital signal collected by the camera 122 into an image signal, which is transmitted to the external device through the main board, so that the image of the target part in the body can be displayed on the external device, so that the operator can observe a clear magnified image, which is conducive to accurately judging the situation of the target part in the body.

[0067] Since the image processor is mainly used to convert the digital signal collected by the camera 122 into an image signal, it does not need to enter the body and does not need to contact the operator. In order to avoid material waste, the image processing device 230 of the mainboard integrated with the image processor can be set separately, the mainboard is electrically connected to the endoscope 10, and the image processing device 230 is used as a reusable part. Since the mirror tube 100 needs to extend into the human body, and the liquid circuit pipeline inside the operating handle 200 will flow through the body fluid of the human body, therefore, in order to avoid cross infection, the mirror tube 100 and the operating handle 200 can be used as disposable devices.

[0068] Reference Figure 2 As shown, the operating handle 200 of the endoscope 10 may include an operating portion 210 and a gripping portion 220. The mirror tube 100 is installed at one axial end of the operating portion 210, and the gripping portion 220 is connected to the other axial end of the operating portion 210. The gripping portion 220 is detachably connected to the image processing device 230. The purpose of such a setting is to facilitate disassembly and assembly, and to facilitate subsequent replacement. Specifically, when the image processing device 230 is connected to the gripping portion 220, the gripping portion 220 wraps up the end of the image processing device 230, and has good sealing. The operating portion 210 is mainly used to support and fix the mirror tube 100. The operating portion 210 may have an installation cavity (not shown in the figure), and the installation cavity is used to arrange the aforementioned liquid circuit components and circuit components, and the gripping portion 220 is mainly used for the operator to hold.

[0069] Among them, the holding portion 220 can be inclined with respect to the operating portion 210. In other words, there is an angle between the axial direction of the holding portion 220 and the axial direction of the operating portion 210 to meet the angle requirements during operation and avoid the operator from contacting the patient when holding the endoscope. On the basis of ensuring that the scope tube 100 can be extended into the target part in the body and can move smoothly in the corresponding tissue, the comfort of the operator's holding is guaranteed and the space requirements of the operator for operating the endoscope 10 are met.

[0070] The operating portion 210 may be provided with a knob 211 for driving the mirror tube 100 to rotate so as to adjust the orientation of the mirror tube 100 , thereby facilitating observation of different areas of the target part in the body, providing a more complete and comprehensive observation of the target part, and improving the operability of the endoscope 10 .

[0071] in addition, Figure 1 and Figure 2 2 shows a liquid inlet pipe 201 and a liquid outlet pipe 202 arranged in the operating handle 200. The liquid inlet pipe 201 and the liquid outlet pipe 202 are part of the aforementioned liquid path components. The liquid inlet pipe 201 and the liquid outlet pipe 202 both extend into the operating portion 210 and are connected to the endoscope tube 100. The liquid inlet pipe 201 is used to transport liquid into the endoscope tube 100 so that the liquid enters the target part of the body through the endoscope tube 100. The liquid outlet pipe 202 is used to discharge the liquid in the endoscope tube 100 so that the liquid that flows back into the endoscope tube 100 from the body is discharged to the outside of the endoscope 10 through the liquid outlet pipe 202.

[0072] Taking the endoscope 10 as a hysteroscope as an example, the liquid inlet tube 201 can be used to transport uterine distension fluid into the scope tube 100. The uterine distension fluid is sprayed into the uterine cavity from the distal end of the scope tube 100. The uterine distension fluid in the uterine cavity can also flow back into the scope tube 100. The uterine distension fluid that flows back into the scope tube 100 is discharged through the liquid outlet tube 202.

[0073] Continue to refer to Figure 1 and Figure 2As shown, in this embodiment, the liquid inlet pipe 201 and the liquid outlet pipe 202 in the operating portion 210 can extend into the grip portion 220, and the liquid inlet pipe 201 and the liquid outlet pipe 202 can extend along the inner wall surface of the grip portion 220 and extend from the opening at the bottom end of the grip portion 220. In other embodiments, the liquid inlet pipe 201 and the liquid outlet pipe 202 can also extend directly from the operating portion 210 to the outside of the endoscope 10, and this embodiment is not limited to this.

[0074] The scope tube 100 of the endoscope 10 will be described in detail below.

[0075] In this embodiment, refer to Figure 3 As shown, the mirror tube 100 includes a mirror tube body 110 and a mirror tube head 120 , and the mirror tube head 120 is installed at the distal end of the mirror tube body 110 .

[0076] Specifically, in this embodiment, the mirror tube body 110 and the mirror tube end 120 are divided into two parts and manufactured separately, which reduces the manufacturing difficulty of the mirror tube 100 and saves the manufacturing cost of the mirror tube 100. Exemplarily, the mirror tube end 120 and the mirror tube body 110 can be connected by thread, buckle, plug-in connection, silicone sleeve connection, etc., which is not limited in this embodiment of the present application.

[0077] Reference Figure 3 As shown, in this embodiment, the distal end of the mirror tube 100 is bent toward the side of the mirror tube 100, and from the proximal end of the mirror tube 100 to the distal end of the mirror tube 100, the mirror tube 100 includes a main section 100a and a curved section 100b arranged in sequence. The main section 100a, as the main structure of the mirror tube 100, occupies most of the length of the mirror tube 100. The mirror tube 100 can be extended into the target part of the body, which is mainly satisfied by the length provided by the main section 100a. The curved section 100b is located on the side of the main section 100a away from the operating part 210, and the curved section 100b enables the mirror tube 100 to have a curved distal end.

[0078] Specifically, the mirror tube 100 can have two structures: the first is that the mirror tube body 110 has a main section 100a and a curved section 100b, and the mirror tube end 120 is arranged at an end of the curved section 100b away from the main section 100a; the second is that the mirror tube body 110 is the main section 100a, and the mirror tube end 120 is the curved section 100b. In this embodiment, the mirror tube 100 is taken as the second structure as an example for description.

[0079] The main body section 100a of the mirror tube 100 may extend in a straight line, and the extension direction of the main body section 100a may be parallel to the axial direction of the operating portion 210 of the operating handle 200. For example, the main body section 100a may be coaxially arranged with the operating portion 210. The curved section 100b and the main body section 100a have an angle, so that the mirror tube 100 has a curved distal end.

[0080] By making the endoscope tube 100 have a curved distal end, on the one hand, the endoscope tube 100 can adapt to different structures of the body's cavities to increase the application range of the endoscope 10. Taking the endoscope 10 as a hysteroscope as an example, the curved distal end of the endoscope tube 100 can better match the structure of the connection position between the cervical opening and the vagina.

[0081] On the other hand, the movable range of the bending section 100b is increased. When the mirror tube 100 is rotated, the area of ​​the circular surface of the bending section 100b is larger. For the camera 122 installed at the end of the bending section 100b, the field of view of the camera 122 is increased, and the orientation of the camera 122 can be adjusted as needed, which is conducive to comprehensive and complete observation of the target area.

[0082] The angle between the curved section 100b and the main section 100a of the mirror tube 100 may be between 150° and 175°. In other words, the curved section 100b may be slightly inclined to the main section 100a. For example, the angle between the curved section 100b and the main section 100a may be 155°, 160°, 165°, 170°, etc. The length of the curved section 100b may be between 10 mm and 35 mm. For example, the length of the curved section 100b may be 15 mm, 20 mm, 25 mm, etc.

[0083] By making the curved section 100b slightly inclined relative to the main section 100a and controlling the length of the curved section 100b within a suitable range, it is ensured that the field of view of the camera 122 can cover the operating range of the surgical instrument after it is extended. If the degree of inclination of the curved section 100b is too large, and the optical axis direction of the camera 122 is not on the axial direction of the main section 100a, for example, the optical axis direction of the camera 122 is parallel to the inclination direction of the curved section 100b, it may result in that the instrument operation cannot be observed within the field of view of the camera 122; in addition, if the length of the curved section 100b is too long, even if the optical axis direction of the camera 122 is on the axial direction of the main section 100a, there is a possibility that the camera 122 cannot see the operating position of the instrument.

[0084] The main section 100a and the curved section 100b of the mirror tube 100 can have an arc-shaped transition, so that the entire outer wall surface of the mirror tube 100 is smooth, and sharp protrusions are avoided, so as to prevent the mirror tube 100 from causing discomfort to the user when the mirror tube 100 is inserted into the body. In addition, stress concentration in the mirror tube 100 can be avoided, so as to ensure the structural strength and reliability of the mirror tube 100.

[0085] In addition, in this embodiment, each part of the mirror tube 100 in the length direction can maintain substantially the same outer diameter, so that the mirror tube 100 has good overall consistency, and the curved section 100b of the mirror tube 100 also maintains a sufficient cross-sectional area, which helps to improve the structural strength of the mirror tube 100, and the mirror tube 100 will not have a local stress concentration phenomenon. In addition, the mirror tube 100 can match different tissues and cavities in the body, and the applicability of the mirror tube 100 is higher.

[0086] As an optional implementation, the material of the mirror tube 100 is selected from titanium alloy. The purpose of this configuration is that the titanium alloy has higher strength and corrosion resistance, and better biocompatibility, and is suitable for the working environment of the endoscope 10 .

[0087] The following is a detailed description of the mirror tube end 120 in this embodiment.

[0088] In this embodiment, the mirror tube end 120 is arranged at the distal end of the mirror tube body 110. The mirror tube body 110 includes an inner tube 111 and an outer tube 112. The outer tube 112 is sleeved outside the inner tube 111, and the inner wall surface of one side of the outer tube 112 is abutted against the outer wall surface of the inner tube 111. There is a gap between the inner wall surface of the other side of the outer tube 112 and the outer wall surface of the outer tube 112 to form an annular channel 113.

[0089] In this embodiment, the cross-sectional shape of the inner tube 111 may be an ellipse, such as Figure 5 As shown, the purpose of such a configuration is to allow enough space for the surgical instrument to pass through, and when the surgical instrument is inserted, there is also a large gap around the surgical instrument for fluid to flow.

[0090] As another optional embodiment, the cross-sectional shape of the inner tube 111 is pear-shaped, see Figure 6 As shown, specifically, a larger arc segment and a smaller arc segment are respectively provided at opposite ends of the cross section of the inner tube 111, and the two arc segments are interconnected to increase the flow space of the fluid, so that surgical instruments and fluid can pass smoothly in the inner tube 111.

[0091] In some possible implementations, the cross-sectional shape of the inner tube 111 is circular, which has strong applicability and can allow most instruments to pass through. The circle has good symmetry, which reduces the friction and resistance of the instrument when passing through the inner tube 111, thereby improving operational efficiency.

[0092] In this embodiment, refer to Figure 7 to Figure 8As shown, the mirror tube end 120 includes: an end body 121, the end body 121 has a first channel 1211 and a second channel 1212, the first channel 1211 is used to communicate with the annular space channel 113, and the second channel 1212 is used to communicate with the inner tube 111, wherein a guide hole 1214 connected to the first channel 1211 is also provided at the front end of the first channel 1211 away from the mirror tube body 110.

[0093] In actual operation, one of the inner tube 111 and the outer tube 112 (annular channel 113) can be used as a liquid inlet channel, and the other as a liquid outlet channel, the liquid inlet channel is connected to the liquid inlet tube 201 in the operating handle 200, and the liquid outlet channel is connected to the liquid outlet tube 202 in the operating handle 200. The liquid enters the liquid inlet channel of the scope tube 100 from the liquid inlet tube 201, and the liquid in the liquid inlet channel is ejected from the distal end of the scope tube 100 through the guide hole 1214 connected to the first channel 1211, and enters the target part in the body; the liquid in the body flows back from the distal end of the scope tube 100 through the inner tube 111 to the liquid outlet channel of the scope tube 100, and then flows out of the endoscope 10 from the liquid outlet tube 202.

[0094] Specifically, refer to Figure 7 As shown, the guide hole 1214 is arranged on the upper side of the camera 122. Such a setting can more effectively guide the flow of liquid and avoid blocking the field of view of the camera 122, so as to ensure that the operator (such as a doctor) can directly and clearly observe the target area of ​​the human body during the operation.

[0095] It should be noted that the outer tube 112 has a support portion 112a, and the support portion 112a has different forms to enclose different first channels 1211 structures with the end body 121. The following is a description in conjunction with different embodiments.

[0096] In some feasible implementations, the support portion 112a is a circular plane. In this case, the first channel 1211 is surrounded by the structure of the mirror tube end 120 itself. The purpose of such a setting is to facilitate operation and assembly and disassembly.

[0097] In some other possible implementations, refer to Figure 8 As shown, the support portion 112a is a semicircular arc structure extending along a first direction, wherein the first direction is Figure 8 Part of the structure of the end body 121 is covered on the inner surface of the semicircular arc structure, so that the end body 121 and the outer tube 112 are combined to form a first channel 1211. The purpose of this arrangement is to improve the strength of the mirror tube end 120 and ensure the smoothness of the liquid flow.

[0098] It is understandable that the shape of the support portion 112a is not limited and can be selected according to actual conditions, as long as it can form the structure of the first channel 1211. In this embodiment, the support portion 112a is a semicircular arc structure as an example for description.

[0099] In this embodiment, refer to Figure 8 As shown, a first installation groove 1213 is provided at the front end of the first channel 1211 away from the mirror tube body 110 , and the camera 122 and the light source 123 are installed in the first installation groove 1213 .

[0100] Among them, as an optional implementation, the camera 122, the light source 123 and the first mounting groove 1213 are interference fit. Such a setting can improve the stability of the camera 122 and the light source 123, and prevent the camera 122 and the light source 123 from loosening and falling off during the operation due to loose fixation, thereby improving the safety of subsequent operations.

[0101] Specifically, the end body 121 is made of wear-resistant material. The purpose of this configuration is to prevent the gap between the camera 122 and the light source 123 and the first mounting groove 1213 from becoming too large due to excessive wear during long-term use of the mirror tube end 120, thereby causing the camera 122 and the light source 123 to loosen and fall off.

[0102] Exemplarily, the wear-resistant material may be cemented carbide, alloy steel, etc., which is not limited in this embodiment.

[0103] It should be noted that the first mounting groove 1213 can be connected to the first channel 1211 so that the cable connecting the camera 122 and the light source 123 can be placed inside the first channel 1211; alternatively, the first mounting groove 1213 can also be disconnected from the first channel 1211, that is, the first mounting groove 1213 is an independent module, and the first mounting groove 1213 has a bottom wall 1213a, see Figure 7 As shown, the first installation groove 1213 and the first channel 1211 are separated, and the camera 122 and the light source 123 are placed inside the first installation groove 1213. Specifically, the camera 122 and the light source 123 are connected to the image collector by wireless connection, which reduces the use of cables, facilitates operation, and also reduces the risk of infection and damage.

[0104] In this embodiment, refer to Figure 8 and Fig. 9 As shown, a retaining frame 125 is disposed inside the first mounting groove 1213 , and the retaining frame 125 is used to fix the camera 122 and the light source 123 to prevent the camera 122 and the light source 123 from shaking during operation.

[0105] Specifically, refer to Fig.10 and Fig.11 As shown, the holder 125 includes: a camera mounting portion 1251, the camera mounting portion 1251 has a camera mounting opening 1252, and the first camera 122 is clamped in the camera mounting opening 1252. Specifically, the camera mounting opening 1252 has an arc opening along the third direction, wherein the third direction is Fig.11 The "Z" direction in the diagram.

[0106] In this embodiment, the holder 125 further includes a light source mounting portion 1253, which is connected to the outside of the camera mounting portion 1251, and the light source 123 is mounted between the inner side wall of the light source mounting portion 1253 and the outer side wall of the camera mounting portion 1251, see Fig.10 and Fig.11 shown.

[0107] In this embodiment, continue to refer to Fig.10 and Fig.11 As shown, the camera 122 includes: a lens barrel 1221, a lens 1222, a circuit board 1223 and a sensor 1224, wherein a partition 1221a is provided along the extension direction of the lens barrel 1221 for dividing the lens barrel 1221 into two independent front and rear areas to achieve different functions.

[0108] Specifically, the lens 1222 is disposed in the lens barrel 1221 and located on the front side of the lens barrel 1221, and is used to focus light on the sensor 1224. The circuit board 1223 and the sensor 1224 are located on the rear side of the lens barrel 1221, and are used to convert the received light signal into an electrical signal and finally generate an image for transmission to other devices.

[0109] The circuit board 1223 is also connected to the light source 123 to control the brightness, color temperature and switch state of the light source 123 to provide the best lighting effect. Specifically, the circuit board 1223 is also provided with a communication interface with an external device to facilitate connection with an external display and improve the convenience of operation.

[0110] In this embodiment, the position of the lens barrel 1221 should be reasonably arranged in combination with the actual spatial structure of the terminal body 121. Specifically, when the internal space of the terminal body 121 is small, the front end of the lens barrel 1221 can be protruded from the front end surface of the terminal body 121 to reduce the space occupancy rate. In addition, the lens 1222 and the light source 123 can be protected from direct contact and damage, and the protruding lens barrel 1221 can also provide a better field of view and reduce the obstruction of the field of view by the terminal body 121.

[0111] In other possible implementations, when the internal space of the end body 121 is large, the front end of the lens barrel 1221 can be flush with the front end surface of the end body 121. Such a setting can reduce the friction and damage of the equipment to human tissue during insertion and operation, so as to improve the safety of the operation, reduce postoperative complications and patient discomfort, and facilitate disinfection and cleaning.

[0112] Exemplarily, the number of light sources 123 may be one or more. In this embodiment, the number of light sources 123 is two as an example for description, and the two light sources 123 are respectively located on the left and right sides of the camera 122, see Fig.11 and Fig.12 As shown, it is used to provide light source for the camera 122 under dim light conditions.

[0113] Exemplarily, the light source 123 can emit light toward the front end surface of the mirror tube end 120, or can emit light toward the side of the mirror tube end 120. This embodiment does not limit this. This embodiment is described by taking the light source 123 emitting light toward the front end surface of the mirror tube end 120 as an example.

[0114] Specifically, the light emitted by the light source 123 is divided into two parts. One part is used as the main light source to illuminate the target area of ​​the human body to provide lighting, and the other part of the light is used as stray light and enters the camera 122 through refraction, interfering with the imaging effect and reducing the imaging quality.

[0115] Therefore, in order to prevent the aforementioned stray light from entering the camera 122, in this embodiment, a lens assembly 124 is provided on the front end surface of the lens tube end 120. Specifically, the lens assembly 124 includes a lens body 1241 and a light shielding member 1242. The light shielding member 1242 is provided between the light collecting surface of the camera 122 and the light source 123 to prevent the stray light from entering the camera 122, avoid glare and light spots, and thus improve the imaging quality. Figure 8 shown.

[0116] In this embodiment, the lens body 1241 is sealed and connected to the front end of the first mounting groove 1213. Specifically, the groove wall of the front end of the first mounting groove 1213 extends with a step portion 1215, and the lens body 1241 is connected to the step portion 1215. Figure 7 shown.

[0117] Among them, the lens body 1241 and the first mounting groove 1213 can be a split structure, and the lens body 1241 is assembled at the front end of the first mounting groove 1213 and can be disassembled to facilitate subsequent maintenance; or, the lens body 1241 can also be integrally formed at the front end of the first mounting groove 1213, which has higher strength and can improve assembly efficiency.

[0118] In this embodiment, the position of the shading member 1242 can be reasonably arranged in combination with the internal space structure of the actual mirror tube end 120. When the internal space of the mirror tube end 120 is large, the shading member 1242 can be glued to the surface of the lens body 1241. In this case, the shading member 1242 protrudes from the surface of the lens body 1241, which is convenient for subsequent replacement; or the shading member 1242 is clamped inside the lens body 1241. In this case, the shading member 1242 is completely embedded inside the lens body 1241, which can save space, improve space utilization, and facilitate the layout of various accessories in the mirror tube end 120. In this embodiment, the shading member 1242 is clamped inside the lens body 1241 as an example for description.

[0119] For details, see Fig.12 and Fig.13 As shown, a second mounting groove 1243 is provided on the lens body 1241 , and the second mounting groove 1243 extends from the inner surface of the lens body 1241 to the outer surface of the lens body 1241 , and the second mounting groove 1243 passes through the two side surfaces in the thickness direction of the lens body 1241 , and the shading member 1242 is clamped in the second mounting groove 1243 .

[0120] It should be noted that the inner surface of the lens body 1241 is a side surface of the lens body 1241 facing the camera 122 , and the outer surface of the lens body 1241 is opposite to the inner surface of the lens body 1241 .

[0121] In order to shield the stray light emitted by the camera 122 to the maximum extent without affecting the normal operation of the camera 122, the position of the shading member 1242 should be reasonably arranged. Specifically, in this embodiment, the projection of the first shading surface 1244 of the shading member 1242 along the first direction does not overlap with the lens 1222, so that the illumination light emitted by the camera 122 can be emitted through the light-transmitting surface of the lens body 1241. The first direction is Fig.12 It should be noted that the first light shielding surface 1244 of the light shielding member 1242 is a side surface of the light shielding member 1242 facing the central axis of the lens 1222 .

[0122] In this embodiment, see Fig.14 As shown, the gap between the second light shielding surface 1245 of the light shielding member 1242 and the end surface of the lens barrel 1221 is smaller than the preset distance, so that the light shielding member 1242 and the lens barrel 1221 fit closely to prevent light leakage, thereby affecting the imaging effect.

[0123] Specifically, the shape of the light shielding member 1242 should not affect the field of view of the endoscope 10, ensure that the operator can clearly observe the target area of ​​the human body, and effectively block stray light from different directions to prevent it from entering the camera 122 and affecting the imaging quality. Specifically, the shape of the light shielding member 1242 can be a "Z" shape, a "C" shape, etc. This embodiment does not limit this, as long as it can block the stray light emitted by the light source 123.

[0124] Continue to refer to Fig.12 and Fig.13 As shown, in this embodiment, the shape of the shading member 1242 is a "Z" shape. Specifically, the shading member 1242 includes a vertical section 1242a, and the vertical section 1242a extends along the height direction of the lens body 1241. The size of the vertical section 1242a along the height direction of the lens body 1241 is greater than the size of the light source 123 along the height direction of the lens body 1241, so as to block the stray light of the light source 123 along the height direction of the lens body 1241. The height direction of the lens body 1241 is Fig.12 In the "Z" direction, the shading member 1242 further includes a horizontal segment 1242b, and the horizontal segment 1242b extends along the second direction, wherein the second direction is Fig.12 "Y" direction in .

[0125] It should be noted that the number of the horizontal segments 1242 b may be one or two. The different structures of the shading member 1242 are described below.

[0126] Among them, as an optional embodiment, the number of horizontal segments 1242b is one, and the horizontal segment 1242b is vertically connected to one end of the vertical segment 1242a, and the horizontal segment 1242b extends toward the camera 122 to absorb stray light near one end of the camera 122, or, the horizontal segment 1242b extends toward the light source 123 to block the stray light of the light source 123 along the second direction, prevent the stray light from entering the interior of the camera 122, reduce halo, and improve imaging quality.

[0127] Among them, as another optional implementation, the number of horizontal segments 1242b is two, and the two horizontal segments 1242b are respectively vertically connected to the two ends of the vertical segment 1242a along the height direction of the lens body 1241, and are used to block stray light emitted along the second direction to prevent it from entering the interior of the camera 122.

[0128] It is understandable that the number of the horizontal segments 1242b is not limited and can be selected according to actual conditions, and only needs to prevent stray light in the second direction from entering the interior of the camera 122. In this embodiment, the number of the horizontal segments 1242b is two as an example for description.

[0129] Light source

[0130] Specifically, in the present embodiment, only one shading member 1242 may be provided, and the shading member 1242 surrounds the camera 122 to block the stray light around the camera 122, or two shading members 1242 may be provided, and the two shading members 1242 are symmetrically arranged on the outsides of the two light sources 123 to block the stray light in the edge areas of the two light sources 123. In the present embodiment, the number of shading members 1242 is two for illustration.

[0131] The material of the light shielding member 1242 can be black resin. The purpose of this setting is that the black resin has high light absorption, which can effectively reduce reflected light and stray light, thereby improving the imaging quality, and the resin material is light in weight and easy to operate; in addition, the material of the light shielding member 1242 can also be metal material, such as aluminum alloy, wherein the surface of the aluminum alloy can also be anodized to reduce reflection. This embodiment does not limit the material of the light shielding member 1242, and the specific material can be determined in combination with actual conditions.

[0132] In this embodiment, a collimating area 1241a is provided on at least a portion of the inner surface of the lens body 1241. Fig.12 As shown, 1241a is arranged corresponding to the light source 123. Based on the principle of refraction, the light from various angles of the light source 123 is focused when entering the collimating area 1241a to reduce the emission angle of the light, thereby improving the imaging effect.

[0133] As another optional implementation, a collimation area 1241a is provided in the entire area of ​​the light source 123 to ensure that all the light emitted by the light source 123 can be transmitted to the target area according to the preset path. Specifically, the area of ​​the collimation area 1241a is also affected by the type of the light source 123, that is, a point light source usually requires a smaller collimation area, while a surface light source may require a larger collimation area. Therefore, the area of ​​the collimation area 1241a should be set in combination with actual conditions.

[0134] Exemplarily, the type of the light source 123 may be an LED lamp, a halogen lamp, an incandescent lamp, or a functional lamp such as an ultraviolet lamp, an infrared lamp, etc. In this embodiment, the light source 123 is taken as an LED lamp for example.

[0135] In this embodiment, continue to refer to Fig.12 As shown, the inner surface of the lens body 1241 is the side surface of the lens body 1241 facing the camera 122, so that the collimation area 1241a is set at the initial position where the light enters the lens body 1241, so as to focus the scattered light before entering the optical system, improve the utilization rate of the light, and reduce the scattering and diffraction of the light.

[0136] In this embodiment, continue to refer to Fig.12 As shown, a plurality of collimating lenses are sequentially arranged in the collimating area 1241a from the side of the light source 123 close to the camera 122 to the side of the light source 123 far from the camera 122. The purpose of such arrangement is that a plurality of collimating lenses can collimate the light step by step, reduce scattering and diffraction, and more accurately control the direction of the light. In addition, the plurality of collimating lenses can work together to correct various aberrations in the optical system and reduce optical distortion.

[0137] Among them, multiple collimating lenses are arranged closely to ensure that the light can be effectively collimated when passing through each collimating lens, and to ensure that there is no gap between two adjacent collimating lenses, to prevent uncollimated stray light from being refracted to other areas, forming light spots, interfering with the imaging effect, and increasing the difficulty of surgery.

[0138] In this embodiment, the cross section of the collimating lens is an arc-shaped surface convex toward the light source 123, which can focus light from all directions and has a good collimating effect.

[0139] Since the fields of view of the camera 122 in the vertical and horizontal directions are very different, in order to ensure that there is no change in light intensity at the intersection of light from multiple light sources 123 arranged on the periphery of the camera 122, it is necessary to add a light distribution structure near the camera 122. This embodiment is limited by the spatial structure between the lens body 1241 and the light source 123, and therefore, the light distribution structure is integrated on the lens body 1241.

[0140] Specifically, refer to Fig.14 As shown, a light distribution surface 1241b is provided on the outer surface of the lens body 1241, and the light distribution surface 1241b is provided corresponding to the light source 123, and the light distribution surface 1241b covers at least a part of the light emitting surface of the light source 123, so that the light beam collimated by the collimation area 1241a can be uniformly emitted through the light distribution surface 1241b, so that the light is evenly irradiated in the target area, reducing light spots and dark areas.

[0141] Among them, refer to Fig.14 As shown, the outer surface of the lens body 1241 is the side surface of the lens body 1241 facing away from the camera 122, which can more directly distribute the light evenly to the target area.

[0142] In this embodiment, refer to Fig.14 As shown, the light distribution surface 1241 b is recessed toward the light source 123 , so that the light collimated in the lens body 1241 can be slightly diverged outwards under the refraction of the light distribution surface 1241 b to expand the illumination field of the light source 123 .

[0143] In this embodiment, the light distribution surface 1241b is a smooth curve with a gradually decreasing curvature from the center to the edge of the light distribution surface 1241b, so that the light is evenly diffused when passing through the light distribution surface 1241b, reducing light spots and dark areas, and providing a more uniform lighting effect.

[0144] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0145] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0146] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A mirror tube end cap, used for being mounted on the distal end of a mirror tube body (110), the mirror tube body (110) comprising an inner tube (111) and an outer tube (112) sleeved outside the inner tube (111), an annular passage (113) being provided between the inner tube (111) and the outer tube (112), It is characterized in that The mirror tube end (120) comprises: The end head body (121) has a first channel (1211), and the first channel (1211) is used to communicate with the annular channel (113); the front end of the first channel (1211) away from the mirror tube body (110) is provided with a first installation groove (1213) and a guide hole (1214), and the guide hole (1214) is communicated with the first channel (1211); A camera (122) and at least one light source (123) are both arranged in the first installation groove (1213), and the light source (123) is arranged on the periphery of the camera (122); The lens assembly (124) comprises a lens body (1241) and at least one shading member (1242), wherein the shading member (1242) is mounted on the lens body (1241); the lens body (1241) is sealed and connected to the front end of the first mounting groove (1213), and the shading member (1242) is arranged between the lighting surface of the camera (122) and the light source (123).

2. The mirror tube tip according to claim 1, It is characterized in that The lens body (1241) is provided with a second mounting groove (1243), and the second mounting groove (1243) extends from the inner surface of the lens body (1241) to the outer surface of the lens body (1241), and the shading member (1242) is installed in the second mounting groove (1243).

3. The mirror tube tip according to claim 2, It is characterized in that The second mounting groove (1243) penetrates through the two side surfaces of the lens body (1241) in the thickness direction, and the shading member (1242) penetrates through the two side surfaces of the lens body (1241).

4. The mirror tube tip according to any one of claims 1 to 3, It is characterized in that The camera (122) comprises: Lens tube (1221); A lens (1222) is arranged in the lens barrel (1221) and is located at the front side of the lens barrel (1221); The circuit board (1223) is connected to the lens barrel (1221) and is located at the rear side of the lens barrel (1221).

5. The mirror tube tip according to claim 4, It is characterized in that The first light shielding surface (1244) of the light shielding member (1242) is flush with the inner side wall of the lens barrel (1221).

6. The mirror tube tip according to claim 4, It is characterized in that The gap between the second light shielding surface (1245) of the light shielding member (1242) and the end surface of the lens barrel (1221) is smaller than a preset distance.

7. The mirror tube tip according to claim 4, It is characterized in that The guide hole (1214) is located on the upper side of the camera (122), and the number of the light sources (123) is two, and the two light sources (123) are respectively located on the left and right sides of the camera (122).

8. The mirror tube tip according to claim 7, It is characterized in that The number of the shading members (1242) is two, and the two shading members (1242) are respectively arranged between the two light sources (123) and the camera (122).

9. The mirror tube tip according to claim 8, It is characterized in that The two shading members (1242) are symmetrically arranged.

10. The mirror tube tip according to claim 9, It is characterized in that The shading member (1242) comprises: The vertical section (1242a) extends along the height direction of the lens body (1241).

11. The mirror tube tip according to claim 10, It is characterized in that The light shielding member (1242) further includes: The horizontal segment (1242b) is connected to at least one end of the vertical segment (1242a), the horizontal segment (1242b) is perpendicular to the vertical segment (1242a), and the horizontal segment (1242b) extends toward the lens (1222) or the horizontal segment (1242b) extends toward the light source (123).

12. The mirror tube tip according to any one of claims 1 to 3, It is characterized in that Also includes: A retaining frame (125) is arranged in the first mounting groove (1213), and the camera (122) and the light source (123) are both installed on the retaining frame (125).

13. The mirror tube tip according to claim 12, It is characterized in that The retaining frame (125) comprises: A camera mounting portion (1251) having a camera mounting opening (1252), wherein the camera (122) is mounted in the camera mounting opening (1252); The light source mounting portion (1253) is connected to the outside of the camera (122) mounting portion, and the light source (123) is mounted between the inner side wall of the light source mounting portion (1253) and the outer side wall of the camera mounting portion (1251).

14. The mirror tube tip according to any one of claims 1 to 3, It is characterized in that A step portion (1215) extends out from the groove wall at the front end of the first mounting groove (1213), and the lens body (1241) is connected to the step portion (1215).

15. The mirror tube tip according to any one of claims 1 to 3, It is characterized in that The lens body (1241) is integrally formed at the front end of the first mounting groove (1213).

16. The mirror tube tip according to any one of claims 1 to 3, It is characterized in that The end head body (121) further comprises a second channel (1212), and the second channel (1212) is used for communicating with the inner tube (111).

17. A mirror tube, It is characterized in that It comprises a mirror tube body (110) and a mirror tube end head (120) according to any one of claims 1 to 16, wherein the mirror tube end head (120) is installed at the distal end of the mirror tube body (110).

18. An endoscope, It is characterized in that It comprises an operating handle (200) and the mirror tube (100) according to claim 17, wherein the proximal end of the mirror tube (100) is mounted on the operating handle (200), and the distal end of the mirror tube (100) extends in a direction away from the operating handle (200).

Images