Endoscope bending angle adjusting assembly and endoscope

Abstract

The endoscope bending angle adjusting assembly comprises an operating handle, the front end of the operating handle is fixedly communicated with a handle front end, mounting holes are formed in the two sides of the rear end of the operating handle in a penetrating mode, and the inner walls of the mounting holes are rotationally connected with first adjusting pipes through rotating shafts; a second adjusting pipe is rotationally connected to the inner wall of the first adjusting pipe through a rotating shaft, a first control knob and a second control knob are fixedly mounted on the outer curved surfaces of the first adjusting pipe and the second adjusting pipe correspondingly, and a first transmission gear and a second transmission gear are fixedly mounted on the inner sides of the first adjusting pipe and the second adjusting pipe correspondingly; and the front ends of the first transmission gear and the second transmission gear are respectively engaged with a third transmission gear and a fourth transmission gear. While bending and resetting adjustment of the endoscopic position of the endoscope lens are achieved, the bending position of the endoscope lens can be conveniently positioned, and the endoscope lens can be kept at the bending position for a long time.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an endoscope bending angle adjustment component and an endoscope. Background Technology

[0002] An endoscope is a medical device that enters the body through natural cavities or tiny incisions to directly observe, diagnose, or treat internal organs. It utilizes optical, electronic, or fiber optic technology to transmit images of the inside of the body to an external display screen, assisting doctors in performing precise examinations and procedures. The main functions of an endoscope include:

[0003] Direct observation of lesions: Endoscopes can enter the digestive tract (gastroscopy, colonoscopy), respiratory tract (bronchoscopy), and urinary system (cystoscopy) to directly observe lesions such as mucosa, tissues, stones, or tumors. Tissue biopsy: When abnormal tissue is found, samples can be taken endoscopically for pathological examination (e.g., gastric mucosal biopsy under gastroscopy) to clarify the nature of the lesion (e.g., inflammation, cancer). Early screening: Used for early cancer screening (e.g., colon cancer, gastric cancer), improving early detection rates and treatment outcomes. Minimally invasive surgery: Minimally invasive procedures are performed using endoscopy. Stent placement: Stents are placed at narrow sites such as the esophagus and bile ducts to relieve obstruction. Drainage: Drainage tubes are placed under endoscopic guidance to treat abdominal abscesses or pancreatitis. Injection therapy: Such as injecting sclerosing agents into varicose veins to treat esophageal varices. Real-time observation: Used for medical research and teaching to record and share surgical procedures or pathological changes. Technological development: Driving advancements in minimally invasive surgical techniques, such as robot-assisted endoscopic surgery.

[0004] However, in practical use, the internal structure of conventional endoscopes is complex, making the production process cumbersome. For example, some adjustment devices require complex mechanical structures to adjust the bending angle, resulting in high production costs and long production times. Moreover, some adjustment devices are complex to operate, requiring operators to undergo long-term training to master them. This reduces reliability during use and can easily affect the efficiency of doctors and the comfort of patients. Summary of the Invention

[0005] The purpose of this invention is to provide an endoscope bending angle adjustment component and an endoscope to solve the problems mentioned in the background art, such as the complex internal structure of conventional endoscopes, which makes the production process cumbersome. For example, some adjustment devices require complex mechanical structures to adjust the bending angle, resulting in high manufacturing costs and long production time. Moreover, some adjustment devices are complicated to operate and require operators to undergo long-term training to master them, which reduces reliability during use and can easily affect the efficiency of doctors and the comfort of patients.

[0006] To achieve the above objectives, the present invention provides the following technical solution: It includes an operating handle, with a front end fixedly connected to the front end of the operating handle. Mounting holes are provided on both sides of the rear end of the operating handle. A first adjusting tube is rotatably connected to the inner wall of the mounting holes via a rotating shaft. A second adjusting tube is rotatably connected to the inner wall of the first adjusting tube via a rotating shaft. A first control knob and a second control knob are fixedly mounted on the outer curved surfaces of the first and second adjusting tubes, respectively. A first transmission gear and a second transmission gear are fixedly mounted on the inner sides of the first and second adjusting tubes, respectively. A third transmission gear and a fourth transmission gear are meshed and connected to the front ends of the first and second transmission gears, respectively. Support columns are rotatably connected to the middle portions of the third and fourth transmission gears via rotating shafts. A first traction wheel and a second traction wheel are fixedly mounted on the side ends of the third and fourth transmission gears, respectively. A first traction wire and a second traction wire for traction and bending of the endoscope tip are fixedly wound on the inner sides of the first and second traction wheels, respectively.

[0007] A support platform is fixedly installed on the inner side of the front end of the operating handle. A first limiting slide groove and a second limiting slide groove are respectively opened through the upper end of the support platform. A first limiting slider and a second limiting slider are respectively movably connected to the inner walls of the first limiting slide groove and the second limiting slide groove. A first fixing block and a second fixing block are respectively fixedly installed on the outer curved surface of the rear end of the first traction wire and the second traction wire. A first extension post and a second extension post are respectively fixedly installed on the upper end of the first fixing block and the second fixing block. A first fastening knob and a second fastening knob are respectively threaded to the top end of the first extension post and the second extension post. A U-shaped operating cavity is opened on the upper side of the front end of the operating handle. A first opening groove and a second opening groove are respectively opened on the rear side of the lower end of the U-shaped operating cavity.

[0008] Preferably, a light guide connector is fixedly connected to the bottom of the operating handle, and the light guide connector is connected to an external light beam cable; an electrical connector is fixedly connected to the upper end of the operating handle, and the electrical connector is connected to an electrical signal cable.

[0009] Preferably, there are two mounting holes, which are symmetrically distributed on both sides of the rear end of the operating handle. The first control knob and the second control knob are provided with anti-slip stripes on their outer sides, and the support column is fixedly installed on the inner side wall of the operating handle.

[0010] Preferably, there are two support platforms, which are symmetrically distributed on the inner side of the front end of the operating handle, and the front and rear orientations of the first limiting slide groove and the second limiting slide groove are the same as the rear end orientations of the first traction wire and the second traction wire, respectively.

[0011] Preferably, the first fixing block and the second fixing block are respectively fixedly installed on the upper ends of the first limiting slider and the second limiting slider, and the outer curved surfaces of the upper ends of the first extension column and the second extension column are respectively provided with external threads, and the bottoms of the first fastening knob and the second fastening knob are respectively glued with anti-slip washers.

[0012] Preferably, the bottom front end of the U-shaped operating cavity is supported by bearing seats and rotatably connected to a first guide wheel and a second guide wheel for guiding the first traction wire and the second traction wire, respectively.

[0013] Preferably, the front and rear ends of the first opening groove and the second opening groove are oriented in the same direction as the rear ends of the first traction wire and the second traction wire, respectively. The inner walls of the first opening groove and the second opening groove are respectively fixedly installed with a first limiting slide rod and a second limiting slide rod, and the middle parts of the first extension column and the second extension column are respectively connected to the outer curved surface of the first limiting slide rod and the second limiting slide rod through and fit together.

[0014] An endoscope includes an insertion part, the rear end of which is fixedly installed inside the front end of a handle. A curved end is fixedly connected to the front end of the insertion part, and an endoscope lens is fixedly installed at the front end of the insertion part. A reset wire coil is fixedly installed inside the curved end, and four traction blocks are fixedly installed on the inner side of the front end of the curved end, which are symmetrically distributed on the inner side of the front end of the curved end. A first traction wire and a second traction wire pass through the insertion part and are fixedly connected to the rear end of the traction blocks through a through-tube.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] When the first and second control knobs are rotated, they drive the first and second traction wheels to rotate. When the first and second traction wheels rotate, they pull the first and second traction wires backward. When the first and second traction wires are pulled backward, they work with the traction block to bend the front side of the bending end. When the front side of the bending end bends, it drives the reset wire loop to bend, and at the same time, it drives the endoscope to bend and adjust the endoscope position. When the reset wire loop bends, the elastic potential energy generated by the bending deformation of the reset wire loop will drive the bending end to bend and reset in the opposite direction. When the bending end bends and resets, it drives the first and second traction wires to move forward and reset through the traction block, so that the bending end drives the endoscope to bend and reset. Thus, while performing endoscopy through the endoscope, it is convenient to bend and reset to adjust the endoscope position.

[0017] This invention also allows for positioning of the first and second extension posts when necessary. By rotating the first and second fastening knobs, the first and second fastening knobs move downwards due to the force generated by their threaded connection to the top ends of the first and second extension posts. As the first and second fastening knobs move downwards, the anti-slip washers adhered to their bottoms firmly adhere to the lower end face of the U-shaped operating cavity. The friction generated by this firm contact between the anti-slip washers and the lower end face of the U-shaped operating cavity then applies force to the first and second extension posts. When the first and second extension columns are tightened and fixed, they will drive the first and second fixing blocks to be positioned. When the first and second fixing blocks are positioned, they will drive the first and second traction wires to be positioned. When the first and second traction wires are positioned, they will drive the bending end to be positioned through the traction block. When the bending end is positioned, it will drive the endoscope to be positioned. This allows for bending and resetting of the endoscope to adjust its endoscopic position, while also facilitating the positioning of the bending position of the endoscope, so that the endoscope can maintain its bending position for a long time. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an endoscope bending angle adjustment component and the overall structure of the endoscope according to the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of an endoscope bending angle adjustment component and the overall structure of the endoscope according to the present invention. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of a partial structure of an endoscope bending angle adjustment component according to the present invention. Figure 1 ;

[0021] Figure 4 This is a schematic diagram of a partial structure of an endoscope bending angle adjustment component according to the present invention. Figure 2 ;

[0022] Figure 5 This is a partial cross-sectional view of an endoscope bending angle adjustment component according to the present invention. Figure 1 ;

[0023] Figure 6 This is a partial cross-sectional view of an endoscope bending angle adjustment component according to the present invention. Figure 2 ;

[0024] Figure 7 This is a partial cross-sectional view of an endoscope bending angle adjustment component according to the present invention. Figure 3 ;

[0025] Figure 8This is a partial cross-sectional view of an endoscope bending angle adjustment component according to the present invention. Figure 4 ;

[0026] Figure 9 This is a cross-sectional schematic diagram of the overall structure of an endoscope according to the present invention;

[0027] Figure 10 This is a schematic diagram of the tension adjustment mechanism in an endoscope according to the present invention.

[0028] In the diagram: 1. Operating handle; 102. Light guide connector; 103. Electrical connector; 104. Handle front end; 105. Mounting hole; 106. First adjusting tube; 107. Second adjusting tube; 108. First control knob; 109. First transmission gear; 110. Second transmission gear; 111. Third transmission gear; 112. Fourth transmission gear; 113. Support column; 114. First traction wheel; 115. Second traction wheel; 116. First traction wire; 117. Second traction wire; 118. Support platform; 119. First limiting slide groove; 120. Second limiting slide groove; 121. First limiting slider; 122. Second limiting slider; 123. 124. First fixing block; 125. Second fixing block; 126. First extension post; 127. Second extension post; 128. First fastening knob; 129. Second fastening knob; 120. U-shaped operating cavity; 131. First guide wheel; 132. Second guide wheel; 133. First opening slot; 134. Second opening slot; 135. First limiting slide rod; 136. Second limiting slide rod; 140. Second control knob; 141. Tension adjustment mechanism; 142. Tensioning wheel; 143. Steering wheel; 144. Tensioning slider; 145. Slide rail; 146. Spring; 147. Locking plate; 148. Adhesive layer; 149. Upper wedge block; 140. Lower wedge block;

[0029] 2. Insertion part; 3. Bending end; 301. Reset wire ring; 302. Traction block; 4. Endoscope. Detailed Implementation

[0030] 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.

[0031] Please see Figure 1-8The present invention provides an endoscope bending angle adjustment component: including an operating handle 1, a light guide connector 102 fixedly connected to the bottom of the operating handle 1, and the light guide connector 102 connected to an external light beam cable, so that the light guide connector 102 and the light beam cable are connected to an external light source to provide sufficient light for the observation area; an electrical connector 103 fixedly connected to the upper end of the operating handle 1, and the electrical connector 103 connected to an electrical signal cable, so that the electrical connector 103 and the electrical signal cable are connected to an external image processor and a display to acquire an image of the observed area; and a handle front end 104 fixedly connected to the front end of the operating handle 1.

[0032] Two mounting holes 105 are provided on both sides of the rear end of the operating handle 1, symmetrically distributed on both sides of the rear end of the operating handle 1. A first adjusting tube 106 is rotatably connected to the inner wall of each mounting hole 105 via a rotating shaft. A second adjusting tube 107 is rotatably connected to the inner wall of the first adjusting tube 106 via a rotating shaft. A first control knob 108 and a second control knob 136 are fixedly mounted on the outer curved surfaces of the first adjusting tube 106 and the second adjusting tube 107, respectively. Anti-slip stripes are provided on the outer sides of the first control knob 108 and the second control knob 136. A first transmission gear 109 and a second transmission gear 110 are fixedly mounted on the inner sides of the first adjusting tube 106 and the second adjusting tube 107, respectively. The front end of the wheel 110 is respectively meshed with a third transmission gear 111 and a fourth transmission gear 112. The middle parts of the third transmission gear 111 and the fourth transmission gear 112 are respectively rotatably connected to a support column 113 via a rotating shaft. The support column 113 is fixedly installed on the inner side wall of the operating handle 1, so that the support column 113 cooperates with the rotating shaft to rotate and support the third transmission gear 111 and the fourth transmission gear 112 respectively. The side ends of the third transmission gear 111 and the fourth transmission gear 112 are respectively fixedly installed with a first traction wheel 114 and a second traction wheel 115. The inner sides of the first traction wheel 114 and the second traction wheel 115 are respectively fixedly wound with a first traction wire 116 and a second traction wire 117 for traction and bending of the endoscope tip.

[0033] A support platform 118 is fixedly installed on the inner side of the front end of the operating handle 1. There are two support platforms 118, symmetrically distributed on the inner side of the front end of the operating handle 1. The upper end of the support platform 118 is provided with a first limiting slide groove 119 and a second limiting slide groove 120 respectively, and the front and rear orientations of the first limiting slide groove 119 and the second limiting slide groove 120 are the same as the rear end orientations of the first traction wire 116 and the second traction wire 117. The inner walls of the first limiting slide groove 119 and the second limiting slide groove 120 are respectively fitted and movably connected to a first limiting slider 121 and a second limiting slider 122. The outer curved surfaces of the rear ends of the first traction wire 116 and the second traction wire 117 are respectively fixedly installed with a first fixing block 123 and a second fixing block 124. The first and second fixed blocks are fixedly installed on the upper ends of the first and second limiting sliders 121 and 122, respectively, so that the first and second fixed blocks 123 and 124 are moved and limited by the first limiting slide groove 119 and the second limiting slide groove 120 in conjunction with the first and second limiting sliders 121 and 122. The first and second fixed blocks 123 and 124 are respectively fixedly installed on the upper ends of the first and second fixed blocks 125 and 126, respectively. The outer curved surfaces of the upper ends of the first and second extension columns 125 and 126 are respectively provided with external threads. The top ends of the first and second extension columns 125 and 126 are respectively threadedly connected to the first and second fastening knobs 127 and 128, respectively. The bottoms of the first and second fastening knobs 127 and 128 are respectively glued with anti-slip washers.

[0034] A U-shaped operating cavity 129 is provided on the upper side of the front end of the operating handle 1. The bottom of the front end of the U-shaped operating cavity 129 is supported and rotatably connected to a first guide wheel 130 and a second guide wheel 131 for guiding the first traction wire 116 and the second traction wire 117, respectively, through bearing seats. A first opening groove 132 and a second opening groove 133 are provided on the rear side of the lower end of the U-shaped operating cavity 129, and the front and rear ends of the first opening groove 132 and the second opening groove 133 are oriented in the same direction as the rear ends of the first traction wire 116 and the second traction wire 117, respectively. A first limiting slide rod 134 and a second limiting slide rod 135 are fixedly installed on the inner walls of the first opening groove 132 and the second opening groove 133, respectively. The middle parts of the first extension column 125 and the second extension column 126 are respectively connected to the outer curved surfaces of the first limiting slide rod 134 and the second limiting slide rod 135, so that the first limiting slide rod 134 and the second limiting slide rod 135 can respectively limit the movement of the first extension column 125 and the second extension column 126.

[0035] Please see Figure 9An endoscope includes an insertion part 2, the rear end of which is fixedly installed inside the front end 104 of the handle. A curved end 3 is fixedly connected to the front end of the insertion part 2, and an endoscope lens 4 is fixedly installed at the front end of the insertion part 2. A reset wire coil 301 is fixedly installed inside the curved end 3, and a traction block 302 is fixedly installed on the inner side of the front end of the curved end 3. There are four traction blocks 302, which are symmetrically distributed on the inner side of the front end of the curved end 3. A first traction wire 116 and a second traction wire 117 pass through the insertion part 2 through a through pipe and are fixedly connected to the rear end of the traction block 302, so that the front side of the curved end 3 is pulled and bent by the first traction wire 116 and the second traction wire 117 in conjunction with the traction block 302.

[0036] In use, the insertion part 2 is inserted into the desired endoscopy position. When the insertion part 2 is inserted into the desired endoscopy position, the endoscope lens 4 will illuminate the endoscopy position and acquire images.

[0037] When the endoscope 4 needs to be bent and adjusted during the illumination and image acquisition of the endoscope position, the first control knob 108 and the second control knob 136 are rotated. When the first control knob 108 and the second control knob 136 are rotated, they drive the first adjustment tube 106 and the second adjustment tube 107 to rotate. When the first adjustment tube 106 and the second adjustment tube 107 are rotated, they drive the first transmission gear 109 and the second transmission gear 110 to rotate. When the first transmission gear 109 and the second transmission gear 110 are rotated, they mesh and drive the third transmission gear 111 and the fourth transmission gear 112 to rotate. When the third transmission gear 111 and the fourth transmission gear 112 are rotated, they drive the first traction wheel 114 and the second traction wheel 115 to rotate. When rotating, the first traction wire 116 and the second traction wire 117 are pulled backward. When the first traction wire 116 and the second traction wire 117 are pulled backward, they work with the traction block 302 to drive the front side of the bending end 3 to bend. When the front side of the bending end 3 bends, it drives the reset wire ring 301 to bend, and at the same time drives the endoscope lens 4 to bend and adjust the endoscope position. When the reset wire ring 301 bends, the elastic potential energy generated by the bending deformation of the reset wire ring 301 will drive the bending end 3 to bend and reset in the opposite direction. When the bending end 3 bends and resets, it drives the first traction wire 116 and the second traction wire 117 to move forward and reset through the traction block 302, so that the bending end 3 drives the endoscope lens 4 to bend and reset. Thus, while achieving endoscopy through the endoscope lens 4, it is convenient to bend and reset to adjust the endoscope position of the endoscope lens 4.

[0038] When the endoscope 4 is bent and reset to adjust its endoscopic position, the first traction wire 116 and the second traction wire 117 will move backward or forward. During this movement, the first guide wheel 130 and the second guide wheel 131 will guide the movement of the first traction wire 116 and the second traction wire 117. 6 and the second traction wire 117 will drive the first fixed block 123 and the second fixed block 124 to move backward or forward. When the first fixed block 123 and the second fixed block 124 move backward or forward, they will drive the first limiting slider 121 and the second limiting slider 122 to move backward or forward along the first limiting slide groove 119 and the second limiting slide groove 120, so that the first fixed block 123 and the second fixed block 124 are moved and limited by the first limiting slide groove 119 and the second limiting slide groove 120 in conjunction with the first limiting slider 121 and the second limiting slider 122.

[0039] Simultaneously, when the first fixing block 123 and the second fixing block 124 move backward or forward, they will drive the first extension post 125 and the second extension post 126 to move backward or forward. When the first extension post 125 and the second extension post 126 move backward or forward, they will move backward or forward along the outer curved surface of the first limiting slide bar 134 and the second limiting slide bar 135, so that the first extension post 125 and the second extension post 126 are limited in movement by the first limiting slide bar 134 and the second limiting slide bar 135. When the first extension post 125... When the first and second extension posts 125 and 126 move backward or forward, they will cause the first and second fastening knobs 127 and 128 to move backward or forward. When it is necessary to position the first and second extension posts 125 and 126, the first and second fastening knobs 127 and 128 are rotated. When the first and second fastening knobs 127 and 128 are rotated, they will move downward due to the force generated by the threaded connection at the top of the first and second extension posts 125 and 126. When the second fastening knob 128 moves downward, the anti-slip washers adhered to the bottom of the first fastening knob 127 and the second fastening knob 128 will be firmly attached to the lower end face of the U-shaped operating cavity 129. The friction generated by the tight attachment of the anti-slip washers to the lower end face of the U-shaped operating cavity 129 will securely position the first extension post 125 and the second extension post 126. When the first extension post 125 and the second extension post 126 are securely positioned, they will drive the first fixing block 123 and the second fixing block 124 to be positioned. When the first fixing block 123 and the second fixing block 124 are positioned, they will drive the first traction wire 116 and the second traction wire 117 to be positioned. When the first traction wire 116 and the second traction wire 117 are positioned, they will drive the bent end 3 to be positioned through the traction block 302. When the bent end 3 is positioned, it will drive the endoscope 4 to be positioned. This allows the bending and resetting adjustment of the endoscope 4 to be adjusted, while also facilitating the positioning of the bent position of the endoscope 4, so that the endoscope 4 can maintain the bent position for a long time.

[0040] Preferably, the adjustment assembly further includes a tension adjustment mechanism 140, which is installed at the head end inside the operating handle 1. The tension adjustment mechanism 140 is located on the side of the first traction wheel 114 and the second traction wheel 115 near the bent end 3. The tension adjustment mechanism 140 includes a tension wheel 141 and a guide wheel 142. The tension wheel 141 is disposed between the two guide wheels 142. Both sides of the shaft of the tension wheel 141 are installed inside the operating handle 1 via a tension slider 143 and a slide rail 144. A spring 145 is installed in the slide rail 144 to provide elastic support for the tension wheel 141. The first traction wire 116 A tension adjustment mechanism 140 is provided for each of the first and second traction wires 117. The first traction wire 116 and the second traction wire 117 pass through the corresponding steering wheel 142 and tension wheel 141 in sequence. A locking plate 146 is also fixedly provided inside the operating handle 1 at the position corresponding to the tension wheel 141. When the first traction wire 116 or the second traction wire 117 breaks, the elastic force of the spring 145 pushes the tension wheel 141 to move toward the locking plate 146, so that the tension wheel 141 is pressed against the locking plate 146. The locking plate 146 locks the tension wheel 141 and presses the first traction wire 116 and the second traction wire 117 together.

[0041] Furthermore, an adhesive layer 147 is provided at the contact position between the locking plate 146 and the tensioning wheel 141. The adhesive layer 147 can be rubber or adhesive, which can increase the frictional resistance to the first traction wire 116 and the second traction wire 117, and prevent the first traction wire 116 and the second traction wire 117 from still moving after they break.

[0042] Since the first traction wire 116 and the second traction wire 117 are prone to breakage at the first traction wheel 114 and the second traction wheel 115, the tension adjustment mechanism 140 is set at the head end inside the operating handle 1. When the first traction wire 116 or the second traction wire 117 breaks, the elastic force of the spring 145 pushes the tension wheel 141 to move toward the locking plate 146, so that the tension wheel 141 is pressed against the locking plate 146. The locking plate 146 locks the tension wheel 141 and presses the first traction wire 116 and the second traction wire 117 together, so that the first traction wire 116 and the second traction wire 117 can still position the bending position of the endoscope lens 4 after the breakage, so that the endoscope lens 4 maintains the bending position.

[0043] Furthermore, an upper wedge 148 is installed on the tensioning slider 143 of the tensioning wheel 141, and a lower wedge 149 is fixedly installed on the side of the first extension post 125 and the second extension post 126. The upper wedge 148 and the lower wedge 149 are engaged with each other on their inclined surfaces. When the first traction wire 116 or the second traction wire 117 breaks, the elastic force of the spring 145 pushes the tensioning wheel 141 toward the locking plate 146, and at the same time, the tensioning slider 143 of the tensioning wheel 141 drives the upper wedge 148. Moving along the direction of the vertical traction wire causes relative displacement between the upper wedge 148 and the lower wedge 149. The upper wedge 148 pushes the lower wedge 149 to move along the direction of the traction wire, and then the lower wedge 149 pushes the first extension post 125 and the second extension post 126 to move in the first opening groove 132 and the second opening groove 133, so that the first fixing block 123 and the second fixing block 124 lock the first traction wire 116 and the second traction wire 117, maintaining the stability of the endoscope lens 4.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An endoscope bending angle adjustment component, characterized in that: The device includes an operating handle (1), with a handle front end (104) fixedly connected to the front end of the operating handle (1). Mounting holes (105) are provided on both sides of the rear end of the operating handle (1). A first adjusting tube (106) is rotatably connected to the inner wall of the mounting hole (105) via a rotating shaft. A second adjusting tube (107) is rotatably connected to the inner wall of the first adjusting tube (106) via a rotating shaft. A first control knob (108) and a second control knob (136) are fixedly mounted on the outer curved surfaces of the first adjusting tube (106) and the second adjusting tube (107), respectively. A first transmission gear (109) and a second transmission gear are fixedly mounted on the inner sides of the first adjusting tube (106) and the second adjusting tube (107), respectively. (110) The front ends of the first transmission gear (109) and the second transmission gear (110) are respectively meshed with the third transmission gear (111) and the fourth transmission gear (112). The middle parts of the third transmission gear (111) and the fourth transmission gear (112) are respectively rotatably connected to the support column (113) through the rotating shaft. The side ends of the third transmission gear (111) and the fourth transmission gear (112) are respectively fixedly installed with the first traction wheel (114) and the second traction wheel (115). The inner sides of the first traction wheel (114) and the second traction wheel (115) are respectively fixedly wound with the first traction wire (116) and the second traction wire (117) for traction bending of the endoscope tip. A support platform (118) is fixedly installed on the inner side of the front end of the operating handle (1). A first limiting slide groove (119) and a second limiting slide groove (120) are respectively opened through the upper end of the support platform (118). A first limiting slider (121) and a second limiting slider (122) are respectively movably connected to the inner walls of the first limiting slide groove (119) and the second limiting slide groove (120). A first fixing block (123) and a second fixing block (122) are respectively fixedly installed on the outer curved surface of the rear end of the first traction wire (116) and the second traction wire (117). 24) The first fixing block (123) and the second fixing block (124) are respectively fixedly installed with a first extension post (125) and a second extension post (126). The top ends of the first extension post (125) and the second extension post (126) are respectively threaded with a first fastening knob (127) and a second fastening knob (128). The upper side of the front end of the operating handle (1) is provided with a U-shaped operating cavity (129). The rear side of the lower end of the U-shaped operating cavity (129) is provided with a first opening groove (132) and a second opening groove (133).

2. The endoscope bending angle adjustment assembly according to claim 1, characterized in that: The bottom of the operating handle (1) is fixedly connected to a light guide connector (102), and the light guide connector (102) is connected to an external light beam cable. The upper end of the operating handle (1) is fixedly connected to an electrical connector (103), and the electrical connector (103) is connected to an electrical signal cable.

3. The endoscope bending angle adjustment assembly according to claim 2, characterized in that: There are two mounting holes (105), which are symmetrically distributed on both sides of the rear end of the operating handle (1). Anti-slip stripes are provided on the outer side of the first control knob (108) and the second control knob (136). The support column (113) is fixedly installed on the inner side wall of the operating handle (1).

4. The endoscope bending angle adjustment assembly according to claim 3, characterized in that: There are two support platforms (118), which are symmetrically distributed on the inner side of the front end of the operating handle (1). The front and rear orientations of the first limiting slide (119) and the second limiting slide (120) are the same as the rear end orientations of the first traction wire (116) and the second traction wire (117).

5. An endoscope bending angle adjustment assembly according to claim 4, characterized in that: The first fixing block (123) and the second fixing block (124) are respectively fixedly installed on the upper ends of the first limiting slider (121) and the second limiting slider (122). The outer curved surfaces of the upper ends of the first extension column (125) and the second extension column (126) are respectively provided with external threads. The bottom of the first fastening knob (127) and the second fastening knob (128) are respectively glued with anti-slip washers.

6. The endoscope bending angle adjustment assembly according to claim 5, characterized in that: The front end of the U-shaped operating cavity (129) is supported by bearing seats and rotatably connected to a first guide wheel (130) and a second guide wheel (131) for guiding the first traction wire (116) and the second traction wire (117).

7. The endoscope bending angle adjustment assembly and endoscope according to claim 6, characterized in that: The front and rear ends of the first opening groove (132) and the second opening groove (133) are oriented in the same direction as the rear ends of the first traction wire (116) and the second traction wire (117). The inner walls of the first opening groove (132) and the second opening groove (133) are respectively fixedly installed with the first limiting slide rod (134) and the second limiting slide rod (135). The middle parts of the first extension column (125) and the second extension column (126) are respectively connected to the outer curved surface of the first limiting slide rod (134) and the second limiting slide rod (135) through and fit together.

8. An endoscope, characterized in that: The device includes an insertion part (2), and the rear end of the insertion part (2) is fixedly installed inside the front end (104) of the handle as described in any one of claims 1-7. The front end of the insertion part (2) is fixedly connected to a curved end (3). An endoscope (4) is fixedly installed at the front end of the insertion part (2). A reset wire coil (301) is fixedly installed inside the curved end (3). A traction block (302) is fixedly installed on the inner side of the front end of the curved end (3). There are four traction blocks (302), which are symmetrically distributed on the inner side of the front end of the curved end (3). The first traction wire (116) and the second traction wire (117) as described in any one of claims 1-7 pass through the insertion part (2) through a through pipe and are fixedly connected to the rear end of the traction block (302).

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