Electronic endoscope

Abstract

The present application relates to a kind of electronic endoscopes, belong to medical endoscope field, the mirror body includes head end, curved pipe, steering pipe in sequence along axial direction;The curved pipe is arranged between the head end and the steering pipe, the distal end of the curved pipe is connected with the head end, and the curved pipe proximal end is rotatably connected between the steering pipe by first inclined plane and second inclined plane cooperation;The steering pipe is sequentially provided with curved control pipe and directional pipe, the directional pipe is located inside curved control pipe, and the distal end of curved control pipe is provided with elastic section;The proximal end of curved pipe is provided with adjusting pipe connecting step, and the adjusting pipe connecting step is fixedly connected with the distal end surface of curved control pipe;Head end and directional pipe are provided with multiple degrees of freedom orientation mechanism between them.By setting curved pipe between head end and steering pipe, and using the cooperation of first inclined plane and second inclined plane to realize head end angle adjustment, the stability of use is improved.

Description

Technical Field

[0001] This invention belongs to the field of medical endoscopes, and particularly relates to electronic endoscopes. Background Technology

[0002] Endoscopes are commonly used observational devices in minimally invasive diagnostic and treatment procedures. Based on different imaging methods, they are generally divided into optical endoscopes and electronic endoscopes. Currently, clinically commonly used endoscopes typically include different specifications such as straight endoscopes, 30° endoscopes, and 70° endoscopes, depending on the observation direction.

[0003] Among them, the observation direction of the straight endoscope is basically consistent with the axis of the endoscope body, which has the characteristics of clear directionality and intuitive spatial positioning, and is suitable for establishing the surgical field and routine observation. The observation direction of the 30° endoscope forms a predetermined angle with the axis of the endoscope body. By rotating the endoscope body, the area to the side of the axis can be observed, which is suitable for observing obstructed areas, corner areas, and complex anatomical structures. Therefore, in actual surgery, doctors often need to select endoscopes of different angles according to observation needs, and even change endoscopes of different specifications during the same operation to obtain the ideal field of view.

[0004] However, existing electronic endoscopes typically use a fixed camera structure with a fixed observation direction, making it impossible to switch between 0° and 30° observation states. When it is necessary to observe lateral areas, it is usually necessary to move the entire endoscope or change to a different model, which not only increases the complexity of the operation but also affects the continuity of the surgery.

[0005] Based on this, an electronic endoscope is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide an electronic endoscope that solves the problem that existing electronic endoscopes have a fixed observation direction and cannot be adjusted, resulting in a poor surgical field of view.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0008] An electronic endoscope includes a body and an operating handle;

[0009] The mirror body comprises, along the axial direction, a head end, a curved tube, and a directional tube;

[0010] The curved tube is disposed between the head end and the directional tube, the distal end of the curved tube is connected to the head end, and the proximal end of the curved tube is rotatably connected to the directional tube through a first inclined surface and a second inclined surface that cooperate with each other.

[0011] The directional tube is provided with a bending control tube and a directional tube in sequence. The directional tube is located inside the bending control tube, and the bending control tube has an elastic section at its distal end.

[0012] The proximal end of the curved tube is provided with an adjustment tube connecting step, which is fixedly connected to the distal end face of the curved control tube.

[0013] A multi-degree-of-freedom orientation mechanism is installed between the head end and the orientation tube.

[0014] Beneficial effects:

[0015] (1) In this embodiment, a curved tube is set between the head end and the directional tube, and the head end angle is adjusted by the cooperation of the first inclined surface and the second inclined surface. The observation angle change can be completed without the need for a steel wire traction structure, which improves the stability of use.

[0016] (2) The present invention provides a multi-degree-of-freedom orientation mechanism, which enables the head end to swing in multiple directions relative to the orientation tube and achieve circumferential orientation by rotating the orientation tube. While maintaining the deflection angle, the observation range is expanded, making it easier to observe complex parts.

[0017] (3) In this embodiment, the observation angle adjustment and the observation direction adjustment are controlled separately. The bending control tube is used to adjust the head end deflection angle, and the direction adjustment tube is used to adjust the observation direction, making the operation more flexible and reducing the difficulty of use.

[0018] (4) In this embodiment, an elastic section is provided at the far end of the bending control tube, which can adapt to the positional changes caused by the movement of the head end while transmitting rotational force, ensuring transmission stability, reducing stress concentration, and improving overall reliability.

[0019] (5) The present invention utilizes a multi-degree-of-freedom orientation mechanism to constrain the head movement, so that the head maintains a stable posture during the orientation process, avoids disorderly flipping of the camera, helps to maintain the stability of the image orientation, and improves the observation effect.

[0020] (6) After the head end of the embodiment of this disclosure is adjusted, the deflection angle can be kept basically unchanged and circumferential rotation can be achieved. Different directions of vision can be obtained without frequently moving the endoscope or changing the endoscope at different angles, which improves the continuity and convenience of surgical operation.

[0021] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This embodiment presents a schematic diagram of the product structure.

[0024] Figure 2 This embodiment presents a schematic diagram of the mirror body structure.

[0025] Figure 3 This embodiment presents a schematic cross-sectional view of the mirror body structure.

[0026] Figure 4 This embodiment presents a schematic cross-sectional view of the mirror body after bending.

[0027] Figure 5 This embodiment is a schematic diagram of the directional structure.

[0028] Figure 6 A schematic diagram of the bending control structure in this embodiment;

[0029] Figure 7 This embodiment presents a schematic diagram of the steering control structure.

[0030] Figure 8 This embodiment presents a schematic cross-sectional view of the mirror sheath structure.

[0031] Figure 9 This embodiment presents a cross-sectional schematic diagram of the mirror body and mirror sheath assembly structure.

[0032] Figure 10 This embodiment shows the head-end installation diagram;

[0033] Figure 11 This embodiment features an exploded view of the head-end installation.

[0034] Figure 12 This embodiment shows a schematic diagram of the distal end mounting of the scope.

[0035] Figure 13 This embodiment presents an exploded view of the mirror assembly.

[0036] Figure 14 Diagram of the mirror sheath structure in this embodiment;

[0037] Figure 15 This embodiment presents an exploded schematic diagram of the mirror sheath structure.

[0038] Among them: 100 - mirror body

[0039] 101-Camera

[0040] 102-Lighting Components

[0041] 103 - Head end, 1031 - First pivot hole

[0042] 104 - Connecting harness;

[0043] 105 - Cross block, 1051 - Mounting through hole

[0044] 106-Orientation block, 1061-First connecting shaft, 1062-Second connecting shaft

[0045] 107-Bend pipe, 1071-Adjusting pipe connecting step

[0046] 108-Directional pipe;

[0047] 109 - Bending control tube, 1091 - Snake bone segment;

[0048] 110-Directional tube, 1101-Mounting fork seat, 1102-Second pivot hole;

[0049] 111-Adjusting handle, 1111-Second adjusting contact boss;

[0050] 112-Bending control tube handle, 1121-Mounting groove, 1122-Intermediate ring platform, 1123-First adjusting contact boss;

[0051] 113 - Limit screw;

[0052] 114 - Nested;

[0053] 200-Mirror Sheath;

[0054] 201 stainless steel pipe;

[0055] 202-Outer sheath handle seat, 2021-Mounting positioning post

[0056] 203-Silicone Pad;

[0057] 204-Mirror sheath adjusting ring, 2041-Installation clearance groove, 2042-Adjusting tube handle positioning groove, 2043-Bending control tube handle mounting groove, 2044-Positioning mounting hole;

[0058] 205-Bend knob, 2051-Drive slot

[0059] 206 - Locking knob;

[0060] 300-Operating handle;

[0061] 400 - Cables and plugs. Detailed Implementation

[0062] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0063] In the description of this disclosure, the end furthest from the operator is defined as the "far end," and the end closest to the operator is defined as the "near end." It should be understood that the above orientation relationship is set only for the convenience of description and is not intended to limit the specific structure and installation direction of this disclosure.

[0064] To address the problems of complex structure, insufficient reliability, limited observation range, and viewing angle deflection in existing electronic endoscope orientation mechanisms, this disclosure proposes a headpiece, a bending tube, an orientation tube, and a multi-degree-of-freedom orientation mechanism. The headpiece's deflection angle is adjusted using an angle adjustment structure formed between the bending tube and the orientation tube. The independent transmission structure between the orientation tube and the bending control tube allows for adjustment of the headpiece's observation direction. This enables the headpiece to continuously oscillate circumferentially while maintaining its deflection angle, expanding the field of view and improving the endoscope's observation flexibility and reliability.

[0065] Specifically, in some embodiments, an electronic endoscope is provided, such as... Figures 1-15 As shown, it includes a mirror body 100, a mirror sheath 200, an operating handle 300, and cables and plugs 400.

[0066] The endoscope 100 is used to enter the human body cavity and acquire images.

[0067] The sheath 200 is used to establish a surgical working channel and to provide support and guidance for the endoscope 100;

[0068] The operating handle 300 is used to control the orientation and perform functions of the mirror body 100;

[0069] Cables and plugs 400 are used to transmit image signals, power signals and control signals.

[0070] One end of the operating handle 300 is connected to the mirror body 100, and the other end is connected to the cable and plug 400; the mirror sheath 200 is fitted over the outside of the mirror body 100 and can be detachably locked to the operating handle 300.

[0071] like Figures 2 to 4 As shown, the scope 100 comprises, along the axial direction from distal to proximal, the following components:

[0072] Head end 103, bending tube 107, directional tube 108, and directional module.

[0073] The head end 103 is the observation component at the front end of the mirror body 100, and it contains a camera 101 and an illumination component 102.

[0074] The head end 103 has a cylindrical structure and an internal mounting cavity. The camera 101 and the lighting component 102 are fixedly installed in the mounting cavity.

[0075] Camera 101 is used to acquire images of the surgical field.

[0076] An illumination assembly 102 is disposed around the camera 101 to provide illumination to the observation area.

[0077] The lighting component 102 can be a light-emitting diode or a fiber optic light guide structure.

[0078] The proximal end of the head end 103 is provided with a mounting boss for connecting with the bent tube 107.

[0079] Both the camera 101 and the lighting assembly 102 are connected to the control circuit in the operating handle 300 via a connecting harness 104, which runs along the axial direction of the lens body 100.

[0080] like Figure 4 , Figure 5 As shown, a bending control tube 109 and a directional tube 110 are sequentially arranged inside the directional tube 108, with the directional tube 110 located inside the bending control tube 109.

[0081] like Figure 2 , Figure 3 As shown, the directional module includes: directional tube handle 111, bending control tube handle 112, limit screw 113, and nest 114.

[0082] The directional tube 108 is fixedly installed on the directional tube handle 111;

[0083] The directional tube 110 is fixedly installed in the nest 114;

[0084] Bending control tube 109 is fixedly installed on bending control tube handle 112

[0085] The bending control tube handle 112 has an annular structure. Mounting grooves 1121 are provided on both sides. The directional handle 111 and the nest 114 are movably mounted at the distal and proximal ends of the bending control tube handle 111, respectively. A limiting screw 113 passes through the mounting grooves 1121 to axially fix the directional handle 111 and the nest 114. The bending control tube handle 112 can rotate relative to the directional handle 111 and the nest 114.

[0086] The head end 103 is connected to the directional tube 110 through a multi-degree-of-freedom directional mechanism, which is used to realize the multi-directional swing of the head end 103 relative to the directional tube 110.

[0087] like Figure 10 , Figure 11 As shown, the multi-degree-of-freedom orientation mechanism includes a cross block 105 and an orientation block 106.

[0088] The cross block 105 has an overall ring structure, and its center has a central through hole for the connecting wire harness 104 to pass through.

[0089] The cross block 105 has four mounting through holes 1051 in its circumferential direction, and the four mounting through holes 1051 are evenly distributed along the circumferential direction.

[0090] Two mounting through holes 1051 arranged opposite each other form a set of mounting holes, and the axes of the two sets of mounting holes are perpendicular to each other.

[0091] The proximal end of the head end 103 is provided with a first pivot hole 1031.

[0092] The distal end of the directional tube 110 is provided with a mounting fork 1101.

[0093] Mounting fork 1101 includes two fork arms arranged opposite each other, and a second pivot hole 1102 is provided on the fork arms.

[0094] The directional block 106 is disposed in the second rotating shaft hole 1102.

[0095] The orientation block 106 includes a first connecting shaft 1061 and a second connecting shaft 1062 that are horizontally arranged with each other.

[0096] The two ends of the first connecting shaft 1061 are respectively movably installed in the second rotating shaft holes 1102 on both sides of the mounting fork 1101, so that the directional block 106 can rotate relative to the directional tube 110 around the axis of the first connecting shaft 1061.

[0097] The two ends of the second connecting shaft 1062 are respectively movably installed in one of the mounting through holes 1051 of the cross block 105, so that the cross block 105 can rotate relative to the directional block 106 around the axis of the second connecting shaft 1062.

[0098] The first pivot hole 1031 provided near the head end 103 is correspondingly provided with another set of mounting through holes 1051 of the cross block 105, and is movably connected by a pivot.

[0099] This allows the head end 103 to swing relative to the cross block 105 in a direction perpendicular to the axis of the second connecting shaft 1062.

[0100] Through the above structure, a two-degree-of-freedom connection mechanism is formed between the head end 103 and the directional tube 110.

[0101] When the head end 103 deflects, it can swing in the first direction through the first connecting shaft 1061, and swing in the second direction perpendicular to the first direction through the second connecting shaft 1062, so that the head end 103 can rotate in multiple directions within the preset conical space.

[0102] Understandably, since the movement between the head end 103 and the directional tube 110 is achieved through a rotating shaft connection, it helps to make the movement process smoother and constrains the free rotation of the head end 103 around its own axis, thereby improving the directional stability of the observed image.

[0103] Furthermore, the connecting wire harness 104 passes sequentially through the head end 103, the cross block 105, the directional block 106, and the central through hole of the directional tube 110 to connect with the operating handle 300.

[0104] Furthermore, both the cross block 105 and the orientation block 106 are made of medical-grade stainless steel.

[0105] In other embodiments, titanium alloy materials may also be used.

[0106] like Figure 2 , Figure 3 As shown, the proximal end of the bent tube 107 is machined by beveling to form a first bevel, and the distal end of the directional tube 108 is correspondingly provided with a second bevel. The first bevel and the second bevel are in contact with each other and form a rotational fit.

[0107] The proximal end of the bending tube 107 is provided with an adjusting tube connecting step 1071, which is fixedly connected to the distal end face of the bending control tube 109.

[0108] like Figure 13 As shown, the bending tube 107 has a hollow circular tube structure, and the bending control tube 109 has a snake bone section 1091 at its far end.

[0109] In some embodiments, the first and second inclined surfaces are respectively inclined relative to the axis of the mirror body, and the inclination angle can be selected as 15°. When the two inclined surfaces are in opposite directions, the axis of the head end 103 is substantially aligned with the axis of the adjusting tube 108; when the bending tube 107 rotates relative to the adjusting tube 108 to another extreme position, the inclination directions of the two inclined surfaces are superimposed, and an increased angle is formed between the axis of the head end 103 and the axis of the adjusting tube 108, for example, reaching about 30°. The specific maximum angle can be set according to the inclination angle of the inclined surfaces, the dimensions of the matching structure, and the limiting design.

[0110] Compared to the traditional steel wire traction bending structure, this design eliminates the need for a steel wire traction component in the mechanism used to adjust the head-end deflection angle. It is simpler in structure, more reliable, and directly changes the imaging angle.

[0111] like Figure 6 , Figure 12 , Figure 13 As shown, a bending control tube 109 is provided inside the directional tube 108. The bending control tube 109 has a hollow structure. Its distal end is fixedly connected to the bending tube 107. Its proximal end is fixedly connected to the bending control tube handle 112. A snake-bone segment 1091 is provided at the distal end of the bending control tube 109. The snake-bone segment 1091 is integrally formed by laser cutting.

[0112] The snake-bone segment 1091 can both transmit rotational torque and undergo elastic bending within a certain range. This adapts to the spatial displacement changes that occur during the adjustment of the head end 103.

[0113] When the bending control tube handle 112 is turned, the torque is transmitted to the bending tube 107 via the bending control tube 109. This drives the bending tube 107 to rotate around its axis. This changes the angle between the head end 103 and the directional tube 108, thereby adjusting the observation direction.

[0114] like Figure 3 , Figure 7 As shown, the directional tube 108 is fixedly connected to the directional tube handle 111. The directional tube handle 111 can rotate around the axis of the mirror body 100. When the directional tube handle 111 rotates, the directional tube 108 rotates synchronously.

[0115] Since the head end 103 is connected to the cross block 105 and the orientation block 106 in a multi-degree-of-freedom manner, the orientation tube 108 can drive the head end 103 to rotate synchronously around the axis of the mirror body 100 when it rotates around the axis.

[0116] Understandably, optical endoscopes typically transmit images through cylindrical lens groups, prism groups, or optical image transmission systems, and there is a relatively fixed correspondence between the observation direction and the posture of the endoscope. Through long-term clinical use, doctors have developed operating habits and spatial orientation judgment abilities based on optical endoscopes.

[0117] This design addresses the issue that, since the camera in an electronic endoscope is typically fixed at the front of the endoscope, changing the viewing direction often requires rotating the entire endoscope or altering its insertion position. During this process, the displayed image rotates with the camera's orientation, causing discrepancies between the vertical and horizontal directions in the image and the doctor's habitual spatial orientation. This change in image orientation increases the difficulty of spatial positioning, affecting observation efficiency and the user experience. This design aims to maintain observation habits and spatial orientation perception as closely as possible to traditional optical endoscopes.

[0118] With this design, after the angle of the head end 103 is adjusted, the head end 103 can be kept at a fixed angle and rotated around the axis of the mirror body by synchronously rotating the directional handle 111 and the bending control handle 112.

[0119] This allows the observation direction of the head tip 103 to swing continuously 360° within the conical region. Doctors can obtain different directional views without moving the main body of the endoscope, significantly improving the ability to observe complex anatomical areas.

[0120] By limiting the engagement between the first adjusting abutment boss 1123 and the side walls at both ends of the bending control tube handle mounting groove 2043, the maximum rotation angle of the bending control tube handle 112 can be limited, thereby limiting the maximum deflection angle of the head end 103 and preventing excessive movement of the mechanism.

[0121] like Figures 8 to 9 As shown, the mirror sheath 200 includes: a stainless steel tube 201, an outer sheath handle seat 202, a silicone pad 203, a mirror sheath adjustment ring 204, a bending knob 205, and a locking knob 206.

[0122] The stainless steel tube 201 is fixedly installed at the front end of the outer sheath handle seat 202.

[0123] The outer sheath handle seat 202 has a liquid interface on its side for injecting flushing fluid or for negative pressure suction.

[0124] The silicone pad 203 is installed inside the outer sheath handle seat 202.

[0125] The mirror body 100 passes through the central hole of the silicone pad 203, and the elastic deformation of the silicone pad 203 forms a sealing structure to prevent liquid leakage.

[0126] The bending knob 205 is connected to the bending control handle 112.

[0127] The locking knob 206 is used to lock the sheath 200 to the operating handle 300.

[0128] During use, the operator can control the angle of the head end 103 by rotating the bending knob 205; the operator can control the orientation of the head end 103 by rotating the outer sheath handle seat 202; and the operator can quickly lock or remove the scope body from the sheath by rotating the locking knob 206.

[0129] like Figure 14 , Figure 15 As shown, the outer sheath handle seat 202 is provided with a mounting positioning post 2021 inside.

[0130] The silicone pad 203 has a fixing hole that corresponds to the mounting positioning post 2021. During assembly, the mounting positioning post 2021 is inserted into the fixing hole to complete the circumferential positioning of the silicone pad 203 in the outer sheath handle seat 202.

[0131] The sheath adjustment ring 204 is fixedly installed at the rear end of the outer sheath handle seat 202.

[0132] The distal end face of the sheath adjustment ring 204 is provided with a positioning mounting hole 2044, and the mounting positioning post 2021 is inserted into the positioning mounting hole 2044, thereby realizing the positioning and installation between the sheath adjustment ring 204 and the outer sheath handle seat 202.

[0133] The inner side of the sheath adjustment ring 204 is provided with a mounting clearance groove 2041.

[0134] Below the installation clearance groove 2041, there is a positioning groove 2042 for the directional tube handle.

[0135] The side of the mounting clearance groove 2041 is also provided with a bending control tube handle mounting groove 2043. The bending control tube handle mounting groove 2043 has a semi-circular structure.

[0136] The bendable knob 205 is rotatably mounted on the outside of the mirror sheath adjustment ring 204.

[0137] The inner side of the bending knob 205 is provided with a drive groove 2051; the outer periphery of the adjustment tube handle 111 is provided with a second adjustment abutment protrusion 1111. The outer periphery of the bending control tube handle 112 is provided with an intermediate ring platform 1122; the intermediate ring platform 1122 is provided with a first adjustment abutment protrusion 1123.

[0138] During assembly, the directional tube handle 111 is movably installed in the mounting groove 1121 at the far end of the bending control tube handle 112, and forms a rotatable connection with the nest 114 through the limit screw 113.

[0139] The directional handle 111 and the bending control handle 112 are installed together inside the sheath adjustment ring 204.

[0140] The second adjusting abutment 1111 is located in the positioning groove 2042 of the adjusting tube handle.

[0141] The first adjusting engagement boss 1123 is movably disposed in the bending control tube handle mounting groove 2043 and extends into the drive groove 2051 inside the bending knob 205.

[0142] Therefore, when the operator rotates the bending knob 205, the drive groove 2051 pushes the first adjusting abutment boss 1123 to move along the bending control tube handle mounting groove 2043, thereby causing the bending control tube handle 112 to rotate around the axis.

[0143] After the bending control tube handle 112 rotates, the bending tube 107 is driven to rotate synchronously through the bending control tube 109, thereby adjusting the observation angle of the head end 103.

[0144] When the operator rotates the outer sheath handle seat 202, the adjusting ring 204 is fixedly connected to the outer sheath handle seat 202, so the adjusting tube handle positioning groove 2042 rotates synchronously. The second adjusting abutment boss 1111 is pushed by the side wall of the adjusting tube handle positioning groove 2042, thereby driving the adjusting tube handle 111 to rotate synchronously.

[0145] After the directional tube handle 111 rotates, it further drives the directional tube 108 to rotate around the axis, thereby realizing the circumferential adjustment of the observation direction of the head end 103.

[0146] It is understandable that, since the second adjusting abutment 1111 and the directional handle positioning groove 2042 form a circumferential limiting fit, and the first adjusting abutment 1123 and the bending control handle mounting groove 2043 form a guiding fit, when the outer sheath handle seat 202 rotates circumferentially, the directional handle 111 and the bending control handle 112 can move synchronously; and when the operator rotates the bending knob 205 alone, the bending control handle 112 can rotate independently relative to the directional handle 111.

[0147] This achieves decoupled control of the head end 103's observation angle adjustment function and observation direction adjustment function.

[0148] Specifically, rotating the bending knob 205 drives only the bending control tube handle 112 to rotate, thereby adjusting the observation angle; rotating the outer sheath handle seat 202 causes the directional handle 111 to rotate synchronously with the bending control tube handle 112, thereby adjusting the observation direction; while keeping the deflection angle of the head end 103 basically unchanged, the head end 103 can rotate continuously around the axis of the microscope body 100, thereby achieving 360° continuous observation within the preset conical observation area.

[0149] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0150] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An electronic endoscope, comprising an endoscope body and an operating handle, Its characteristics are: The mirror body comprises, along the axial direction, a head end, a curved tube, and a directional tube; The curved tube is disposed between the head end and the directional tube, the distal end of the curved tube is connected to the head end, and the proximal end of the curved tube is rotatably connected to the directional tube through a first inclined surface and a second inclined surface that cooperate with each other. The directional tube is provided with a bending control tube and a directional tube in sequence. The directional tube is located inside the bending control tube, and the bending control tube has an elastic section at its distal end. The proximal end of the curved tube is provided with an adjustment tube connecting step, which is fixedly connected to the distal end face of the curved control tube. A multi-degree-of-freedom orientation mechanism is installed between the head end and the orientation tube.

2. The electronic endoscope according to claim 1, characterized in that... ； The multi-degree-of-freedom orientation mechanism includes a cross block and an orientation block; The cross block is rotatably connected to the head end, and the directional block is rotatably connected to both the cross block and the directional tube.

3. The electronic endoscope according to claim 2, Its characteristics are: The cross block has an overall ring structure. The cross block has four mounting through holes around its circumference. The four mounting through holes are evenly distributed along the circumference. Two mounting through holes that are arranged opposite each other form a set of mounting holes. The axes of the two sets of mounting holes are perpendicular to each other. The orientation block includes a first connecting shaft and a second connecting shaft; Both ends of the first connecting shaft are respectively movably installed in the second rotating shaft hole on the far end mounting fork of the directional tube; The two ends of the second connecting shaft are respectively movably installed in one of the sets of mounting through holes of the cross block.

4. The electronic endoscope according to claim 1, characterized in that... ； The elastic segment is a snake bone, integrally formed at the distal end of the bending control tube by laser cutting.

5. The electronic endoscope according to claim 1, characterized in that; Both the first inclined surface and the second inclined surface are inclined relative to the axis of the mirror body; the first inclined surface and the second inclined surface have the same inclination angle, which is 5° to 30°.

6. The electronic endoscope according to claim 1, characterized in that; The end of the scope is provided with an orientation module; The directional module includes a directional handle, a bending control handle, and a nest; The steering tube is fixedly installed on the steering tube handle; The directional tube is fixedly installed in the nest; The bending control tube is fixedly installed on the bending control tube handle; The directional handle and the nest are installed at the distal and proximal ends of the bending control handle respectively via a rotatable movable connection.

7. The electronic endoscope according to claim 6, characterized in that; The bending control tube handle is provided with mounting grooves at both ends. The directional tube handle and the nested rotatable movable connection are completed by the limit screws passing through the mounting grooves.

8. The electronic endoscope according to claim 1, characterized in that; The mirror sheath includes; Stainless steel pipe; An outer sheath handle seat is located near the end of the stainless steel tube; The mirror sheath adjustment ring is fixedly installed at the rear end of the outer sheath handle seat; The inner side of the sheath adjustment ring is provided with a mounting clearance groove; The mounting clearance groove is provided with a positioning groove for the directional tube handle; The side of the mounting clearance groove is also provided with a bending control tube handle mounting groove, which has a semi-circular structure. A second adjusting contact protrusion is provided on the outer periphery of the adjusting tube handle; The bending control tube handle has an outer circumference with a middle ring platform, and the middle ring platform has a first adjusting contact protrusion. The directional tube handle and the bending control tube handle are both installed inside the mirror sheath adjustment ring; The second adjusting contact boss is located in the positioning groove of the directional tube handle. The first adjusting anti-collision boss is movably set in the bending control tube handle mounting groove.

9. The electronic endoscope according to claim 8, characterized in that; The bending knob is rotatably mounted on the outside of the mirror sheath adjustment ring. The inner side of the bending knob is provided with a drive groove, and the first adjustment abutment protrusion extends into the drive groove on the inner side of the bending knob.

10. The electronic endoscope according to claim 8, characterized in that: When the bending control handle rotates relative to the directional handle, it is used to adjust the angle between the head end and the directional tube. When the directional tube handle and the bending control tube handle rotate synchronously, they are used to drive the head end to swing circumferentially around the axis of the mirror body while keeping the included angle basically unchanged.

Images