Endoscope clamping head

Abstract

The utility model relates to an endoscope clamping head which comprises a clamping mechanism, an angle adjusting mechanism and a clamping device connecting mechanism, the clamping device connecting mechanism is provided with a connecting shaft, the angle adjusting mechanism is provided with a ball seat, a through hole is formed in the ball seat, the front end of the through hole is a ball hole section, and the rear end of the through hole is a straight hole section. The connecting shaft is connected into the straight hole section and rotationally assembled with the straight hole section, and an anti-disengaging piece is fixed to the connecting shaft. A ball head is assembled at the ball hole section in a limiting mode and connected with a connecting rod, an ejector block is arranged in the through hole, an adjusting sliding block is attached to the rear side wall of the ejector block, the adjusting sliding block is connected with an adjusting structure, and the distance between the rear side wall of the ejector block and the front end wall of the connecting shaft is gradually reduced in the forward moving direction of the adjusting sliding block. When the adjusting sliding block is driven to move in the forward direction, the front side wall and the rear side wall of the adjusting sliding block abut against the ejector block and the connecting shaft or the anti-disengaging piece respectively. Adjustment at different angles can be completely adapted, operation is convenient, and the structure is simple; meanwhile, the overall structure is compact.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to an endoscope clamping head. Background Art

[0002] At present, doctors use endoscopes as observation media during surgery, and can observe the internal state of natural or artificial cavities in the human body through endoscopes. However, the endoscope is often manually supported by doctors or assistants during operation, or fixed with simple instruments. The deviation or swing of the endoscope during the operation will cause intraoperative malignant events or risks to the operation. Although the endoscope holders produced by other manufacturers can fix the endoscope, the angle adjustment is inconvenient, which is not conducive to the doctor's requirements for the diversity of rotation directions. In addition, the degree of fixation is limited, which is not conducive to the requirements for the diversity of the angle and position of the endoscope during surgery.

[0003] For example, a Chinese utility model patent document with the authorization announcement number CN219613802U discloses an endoscope clamping head, which includes a clamping mechanism, an angle adjustment mechanism and a clamp connection mechanism, wherein the clamping mechanism is connected to the angle adjustment mechanism, the angle adjustment mechanism is connected to the clamp connection mechanism, the angle adjustment mechanism includes an adjustment rod, an adjustment ball head, an adjustment top block, an adjustment seat and an adjustment screw, etc., and two notches are provided on both sides of the front end of the adjustment seat to facilitate the adjustment of the adjustment rod to achieve a large angle adjustment. In the actual operation process, after the angle of the adjustment rod is adjusted, the adjustment top block is pushed by screwing the adjustment screw, thereby pressing the adjustment ball head, fixing the adjustment ball head, and fixing the angle of the clamping mechanism.

[0004] However, the above-mentioned clamping head has the following problems in actual use: (1) After adjusting the angle of the adjusting rod, since the adjusting rod does not press the ball head, when tightening the screw, the ball head is in a free state and needs to be supported manually by the adjusting rod to change the angle of the ball head, which is inconvenient to operate; (2) Due to the setting of the two notches in the adjustment seat, the ball head can only achieve two large-angle swing adjustments in the horizontal direction. For swings at other angles, only a small swing can be achieved. Its swing angle and swing posture are limited, and it cannot adapt to the adjustment of more angles and postures. Utility Model Content

[0005] The utility model aims to provide an endoscope clamping head to solve the problems in the prior art that the angle adjustment range of the clamping head is small and the operation is inconvenient during fixing.

[0006] In order to solve the above problems, the endoscope clamping head involved in the utility model adopts the following technical solutions:

[0007] The endoscope clamping head comprises a clamping mechanism, an angle adjustment mechanism and a clamper connecting mechanism, wherein the clamping mechanism is connected to the angle adjustment mechanism, and the angle adjustment mechanism is connected to the clamper connecting mechanism, wherein the clamper connecting mechanism has a connecting shaft, and the angle adjustment mechanism has a ball seat, wherein a through hole extending forward and backward is provided in the ball seat, wherein the front end of the through hole is a ball hole section, and the rear end is a straight hole section, wherein the connecting shaft is connected to the straight hole section from back to front and is rotatably assembled with the straight hole section, wherein an anti-slipping member which cooperates with the straight hole section in limiting and preventing slipping along the front-back direction is fixed on the connecting shaft, wherein a ball head is limitedly assembled at the ball hole section, wherein the ball head is connected to a connecting rod extending outward, and wherein the connecting rod is connected to the clamping mechanism A fixed connection is provided, a top block is arranged at the rear side of the ball head in the through hole, an adjusting slider is attached to the rear side wall of the top block, the adjusting slider is connected with an adjusting structure for driving the adjusting slider to reciprocate in the radial direction of the through hole in the positive and reverse directions, and the distance between the rear side wall of the top block and the front end wall of the connecting shaft gradually decreases along the positive movement direction of the adjusting slider; when the adjusting slider is driven to move forward, the front and rear side walls of the adjusting slider respectively push the top block to move forward to press the ball head in the ball hole section to lock and fix the ball head, and push the connecting shaft or the anti-slip component to move backward to press the connecting shaft in the straight hole section to stop the connecting shaft from rotating circumferentially relative to the ball seat.

[0008] In a preferred embodiment, the top block includes a front top block and a rear top block which are guided and inserted into the through hole, the front top block cooperates with the ball head, the rear side wall of the rear top block fits with the adjusting slider, and an elastic pre-tensioning member is installed between the front top block and the rear top block.

[0009] In a preferred embodiment, the rear side wall surface of the rear top block is a first wedge-shaped surface that gradually tilts backward along the positive moving direction of the adjusting slider, and the front end surface of the anti-slip component is a first vertical surface parallel to the positive moving direction of the adjusting slider. The first wedge-shaped surface and the first vertical surface are arranged relative to each other so that the distance between the rear side wall of the top block and the front end wall of the connecting shaft gradually decreases along the positive moving direction of the adjusting slider.

[0010] In a preferred embodiment, an adjustment hole extending up and down is opened on the side wall of the ball seat along the radial direction of the through hole, and the adjustment structure includes an adjustment rod inserted in the adjustment hole along the up and down directions. The diameter of the adjustment hole is larger than the diameter of the adjustment rod so that the adjustment rod can float in the adjustment hole along the front and back directions. The adjustment rod is connected to the adjustment slider to drive the adjustment slider to move up and down.

[0011] In a preferred embodiment, a through threaded hole is provided at the front and rear center positions of the adjusting slider, an external thread threadedly connected to the threaded hole is provided on the rod body of the adjusting rod, the adjusting rod and the ball seat are assembled to limit and prevent disengagement, and when the adjusting rod rotates, it drives the adjusting slider to move back and forth along the axial direction of the adjusting rod.

[0012] In a preferred embodiment, the longitudinal section of the adjusting slider is a trapezoid, the front side wall of which is a second wedge-shaped surface that fits well with the first wedge-shaped surface, and the rear side wall is a second vertical surface that fits well with the first vertical surface.

[0013] In a preferred embodiment, a guide groove opening toward the rear is formed on the rear side wall of the rear top block, the bottom surface of the guide groove forms the second wedge surface, and the left and right support arms of the guide groove are clamped on the left and right sides of the adjusting slider.

[0014] In a preferred embodiment, the straight hole section is a stepped hole section structure, including a small diameter section at the rear end and a large diameter section at the front end, the connecting shaft guide is inserted in the small diameter section, and the anti-slip component includes a limit sleeve mounted on the front end of the connecting shaft, and the rear end surface of the limit sleeve is in contact with the step surface of the straight hole section to achieve anti-rotation limit of the connecting shaft relative to the ball seat through friction between the two.

[0015] In a preferred embodiment, the clamping mechanism includes a fixed splint connected to a connecting rod, a movable splint is movably mounted on the fixed splint, a clamping space for placing an endoscope is formed between the fixed splint and the movable splint, a driving handle for driving the two to be relatively close together is connected between the movable splint and the fixed splint, and a spring is also connected for driving the two to move away from each other.

[0016] In a preferred embodiment, the rear end of the connecting shaft is provided with a square hole for inserting the connecting end of the clamp, and a locking handle is connected to the side wall of the square hole.

[0017] As described above, the utility model has the following beneficial effects: compared with the prior art, the endoscope clamping head designed by the utility model, through the ball head hole section and the straight hole section set by the ball seat, the connecting shaft of the clamp connecting mechanism is rotatably assembled in the straight hole section, and the clamping mechanism is rotatably assembled in the ball hole section through the ball head, so that the ball seat can rotate circumferentially around the connecting shaft and the ball head can rotate universally around the ball hole section, thereby increasing the adaptability of the clamping mechanism to the angle adjustment of the endoscope, and can fully adapt to the adjustment of different angles, with easy operation and simple structure; at the same time, the overall structure is compact, and it is only necessary to design the original ball seat to be rotatably assembled with the clamp connecting mechanism, and the two-way locking of the ball head and the rotating shaft can be achieved by adjusting the movement of the slider, and the unlocking operation is simple, which greatly reduces the manual operation steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for use in the embodiment:

[0019] Figure 1 It is a schematic structural diagram of a specific embodiment of the endoscope clamping head of the utility model;

[0020] Figure 2 for Figure 1 Left view of

[0021] Figure 3 for Figure 1 A half-section view of

[0022] Figure 4 for Figure 1 Schematic diagram of the exploded structure of parts;

[0023] Figure 5 for Figure 4 Half section of the middle rotating body;

[0024] Figure 6 for Figure 4 Half-section view of the middle chuck;

[0025] Figure 7 for Figure 4 A half-section view of the middle adjustment slider;

[0026] Figure 8 for Figure 4 Half section of the middle and rear top block;

[0027] Fig. 9 for Figure 4 A schematic diagram of the structure of the middle ball head and the connecting rod;

[0028] Fig.10 for Figure 4 A schematic diagram of the structure of the fixed splint;

[0029] Description of reference numerals:

[0030] 1- Clamp connection mechanism;

[0031] 11-connecting shaft; 111-through hole; 112-square hole; 113-locking hole; 114-first locking bolt; 115-first locking wheel; 116-limiting sleeve; 1161-first vertical surface;

[0032] 2- Clamping mechanism;

[0033] 21-fixing splint; 211-screw hole; 212-accommodating hole; 213-locking hole; 214-locking pin;

[0034] 22-movable clamp; 23-spring; 24-guide rod; 25-second locking bolt; 26-second locking wheel; 27-clamping groove;

[0035] 3- Angle adjustment mechanism;

[0036] 31-ball seat; 311-rotating body; 312-chuck; 313-straight hole section; 3131-large diameter section; 3132-small diameter section; 3133-step surface 314-ball hole section; 3141-notch; 315-adjusting hole;

[0037] 32-ball head;

[0038] 33-connecting rod; 331-guide hole;

[0039] 34-rear top block; 341-guide groove; 342-first wedge surface;

[0040] 35-front top block; 36-disc spring;

[0041] 37-adjustment structure; 371-adjustment slider; 3711-second wedge surface; 3712-second vertical surface; 372-adjustment rod; 373-third locking wheel. DETAILED DESCRIPTION

[0042] In order to make the technical purpose, technical solution and beneficial effects of the utility model clearer, the technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown herein can be arranged and designed in various different configurations.

[0043] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, which can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0045] The specific embodiment of the endoscope clamping head involved in the utility model is as follows: Figures 1 to 10 As shown, the endoscope clamping head includes a clamping mechanism 2, an angle adjustment mechanism 3 and a clamper connecting mechanism 1, wherein the clamping mechanism 2 is connected to the angle adjustment mechanism 3, and the angle adjustment mechanism 3 is connected to the clamper connecting mechanism 1. During the actual working process, the clamper connecting mechanism 1 is used to connect with the mechanical arm of the clamper, the clamping mechanism 2 is used to clamp the endoscope, and the angle adjustment mechanism 3 is used to adjust the angle and direction of the clamping mechanism 2 relative to the clamper connecting mechanism 1, thereby adjusting the orientation angle of the endoscope.

[0046] The clamp connection mechanism 1 includes a connection shaft 11, which extends in the front-to-back direction and has a through hole 111 arranged through the front and back. The rear end of the through hole 111 is a square hole 112, which is used for the end of the above-mentioned mechanical arm to be inserted and assembled to stop rotation. On the rear end side wall of the connection shaft 11, a locking hole 113 is provided at the position corresponding to the square hole 112. A first locking bolt 114 is provided in the locking hole 113, and a first locking wheel 115 is fixed on the first locking bolt 114. In actual use, after the end of the mechanical arm is inserted into the square hole 112, the mechanical arm can be locked in the square hole 112 by manually rotating the first locking wheel 115, so as to realize the fixed connection between the mechanical arm and the clamp connection mechanism 1. The front end spiral sleeve of the connection shaft 11 is provided with a limit sleeve 116, and the inner diameter of the limit sleeve 116 is larger than the outer diameter of the connection shaft 11. After the two are connected, they are relatively assembled to stop rotation.

[0047] The clamping mechanism 2 includes a fixed splint 21, on which a movable splint 22 is movably mounted, a clamping space for placing an endoscope is formed between the fixed splint 21 and the movable splint 22, a driving handle for driving the two to be relatively close together is connected between the movable splint 22 and the fixed splint 21, and a spring 23 is also connected for driving the two to move away from each other. Specifically, the fixed splint 21 is defined to be directly below the movable splint 22, and clamping grooves 27 are relatively arranged on the upper plate surface of the fixed splint 21 and the lower plate surface of the movable splint 22, and the two clamping grooves 27 are relatively surrounded to form the above-mentioned clamping space, and a guide rod 24 is inserted and fixed on the above-mentioned fixed splint 21 along the upper and lower directions, and the upper end of the guide rod 24 is located on the upper plate surface of the movable splint 22, and the lower end of the guide rod 24 is located on the lower plate surface of the fixed splint 21, and the movable splint 22 and the fixed splint 21 are stopped in the opposite direction by arranging stoppers such as gaskets, nuts, etc. at the upper and lower ends of the guide rod 24. The above-mentioned spring 23 is sleeved on the guide rod 24 and clamped between the movable splint 22 and the fixed splint 21. In this way, the movable splint 22 and the fixed splint 21 can be driven in the opposite direction by the spring 23, so that the movable splint 22 and the fixed splint 21 always have the force to move in the opposite direction. At the same time, a screw hole 211 is also provided on the fixed clamping plate 21, and the axis of the screw hole 211 is parallel to the axis of the guide rod 24. Correspondingly, a second locking bolt 25 is inserted on the movable clamping plate 22, and the end of the second locking bolt 25 has a second locking wheel 26. The lower end of the second locking bolt 25 is screwed and assembled with the screw hole 211 of the movable clamping plate 22. When it is necessary to clamp the endoscope, the endoscope is first placed in the clamping groove 27, and then the second locking bolt 25 is screwed forward. The second locking bolt 25 drives the movable clamping plate 22 to press down and gradually press on the movable clamping plate 22, so that the endoscope is stably clamped between the clamping plates, and the spring 23 is compressed at this time; when it is necessary to unlock the endoscope, the second locking bolt 25 is screwed in the opposite direction. As the second locking bolt 25 is gradually moved out, the movable clamping plate 22 is pushed upward by the spring 23, so that the clamping groove 27 can be opened, and the endoscope can be taken out horizontally.

[0048] The above-mentioned angle adjustment mechanism 3 includes a ball seat 31, a ball head 32, a connecting rod 33, a top block, an adjustment slider 371, a disc spring 36, an adjustment structure 37 and the like.

[0049] The ball seat 31 is the basic carrier of all other parts. The ball seat 31 has a through hole 111 extending forward and backward. The front end of the through hole 111 is a ball hole section 314, and the rear end is a straight hole section 313. In order to facilitate connection, the ball seat 31 is composed of a rotating body 311 and a clamping head 312 that are mutually threaded and connected. The rotating body 311 has a straight hole section 313 inside; the clamping head 312 has a ball hole section 314 inside. Specifically, the inside of the clamping head 312 is a hemispherical hole that gradually expands from front to back, and the diameter of the hemispherical hole is not less than the diameter of the straight hole section 313. This arrangement can facilitate the connection and assembly of various parts.

[0050] The above-mentioned connecting shaft 11 is connected to the straight hole section 313 from back to front and is rotatably assembled with the straight hole section 313. An anti-slipping piece is fixed on the connecting shaft 11, which cooperates with the straight hole section 313 in the front and rear directions to limit and prevent slipping. In this embodiment, the anti-slipping piece is composed of the above-mentioned limiting sleeve 116 sleeved on the front end of the connecting shaft 11. In the actual assembly process, in order to achieve anti-slip connection, the straight hole section 313 is a stepped hole section structure, including a small diameter section 3132 at the rear end and a large diameter section 3131 at the front end; the connecting shaft 11 is guided and inserted in the small diameter section 3132, and a rubber ring is also sandwiched between the connecting shaft 11 and the small diameter section 3132; the limiting sleeve 116 is arranged in the large diameter section 3131, and the rear end face of the limiting sleeve 116 and the step surface 3133 of the straight hole section 313 can contact each other to achieve the anti-rotation limit of the connecting shaft 11 relative to the ball seat 31 through the friction between the two. During actual assembly, the rotating body 311 is first sleeved on the connecting shaft 11, and then the limiting sleeve 116 is screwed on the front end of the connecting shaft 11 to achieve the anti-slip assembly of the connecting shaft 11 relative to the rotating body 311; and when it is necessary to achieve relative anti-rotation locking between the connecting shaft 11 and the ball seat 31, it is only necessary to apply an external force to move the limiting sleeve 116 backward relative to the rotating body 311, and forcefully press the rear end face of the limiting sleeve 116 against the inner step surface 3133 of the rotating body 311, so that the relative anti-rotation locking can be achieved through the friction between the two.

[0051] The ball head 32 is universally rotatably assembled in the ball hole section 314 of the chuck 312, and cooperates with the front and rear stoppers at the front end of the ball hole section 314. At the same time, the ball head 32 is connected to a connecting rod 33, which extends outward from the front end of the ball hole section 314. In order to increase the swing amplitude and angle range of the connecting rod 33, a notch 3141 is opened on the opposite side wall near the front end of the chuck 312. The size of the notch 3141 is larger than the size of the connecting rod 33, so as to facilitate the rapid swinging in and out of the connecting rod 33. The front end of the connecting rod 33 is used to connect with the above-mentioned fixed clamping plate 21. Specifically, the rear end of the fixed clamping plate 21 has a receiving hole 212 extending forward and backward. The front end of the connecting rod 33 is inserted into the receiving hole 212, and the adjustment rod 372 of the two is fixedly connected with the fixed clamping plate 21 through a radially penetrating lock pin 214 or through a threaded connection. Specifically in this embodiment, the upper and lower side walls of the receiving hole 212 are penetrated with a locking hole 213, a locking pin 214 is inserted into the locking hole 213, and the corresponding end of the connecting rod 33 has a guide hole 331, so that the locking hole 213 and the guide hole 331 are fixedly connected by inserting the locking pin 214. Through the cooperation between the ball head 32 and the ball hole section 314 of the clamp 312, the swing direction and angle of the connecting rod 33 can be adjusted. During the actual assembly process, the adjusting rod 372 is first connected to the ball head 32, and after the adjusting rod 372 is inserted into the ball hole section 314 from back to front, the ball head 32 is placed into the ball hole section 314, and then the chuck 312 is relatively connected to the rotating body 311 to limit the ball head 32 in the ball hole section 314. In order to achieve relative anti-rotation of the ball head 32 relative to the ball hole section 314, in this embodiment, the ball head 32 can be pressed and fixed on the inner wall of the ball hole section 314 by externally driving the ball head 32 to move forward relative to the ball hole section 314, and the relative locking and fixation of the two can be achieved by the friction between the two.

[0052] In order to achieve the drive locking of the above-mentioned limit sleeve 116 and the ball head 32, the above-mentioned top block is arranged in the through hole 111 and is located on the rear side of the ball head 32, and the adjusting slider 371 is arranged in a close fit on the rear side of the top block. The adjusting structure 37 is connected to the adjusting slider 371 to drive the adjusting slider 371 to reciprocate in the radial direction of the through hole 111 in the positive and reverse directions, and the distance between the rear side wall of the top block and the front end wall of the connecting shaft 11 gradually decreases along the positive movement direction of the adjusting slider 371; when the adjusting slider 371 is driven to move forward, the front and rear side walls of the adjusting slider 371 respectively push the top block to move forward to press the ball head 32 in the ball hole section 314 to lock and fix the ball head 32, and push the limit sleeve 116 to move backward to press the connecting shaft 11 in the straight hole section 313 to stop the connecting shaft 11 from rotating circumferentially relative to the ball seat 31.

[0053] The adjusting slider 371 is driven to move by the adjusting structure 37. When moving in the forward direction, the adjusting slider 371 moves in a space with a gradually decreasing spacing, thereby pushing the top block and the limit sleeve 116 in both directions to move in the opposite direction, thereby pressing the limit sleeve 116 and the ball head 32 into the corresponding rotating body 311 and the clamping head 312 respectively to achieve anti-slip limit.

[0054] Preferably, in order to ensure that the ball head 32 still maintains a certain damping force in the released state, the top block in this embodiment includes a front top block 35 and a rear top block 34 which are guided and inserted into the through hole 111, the front top block 35 is abutted against the ball head 32, the rear side wall of the rear top block 34 is adapted to fit with the adjusting slider 371, and an elastic pre-tensioning member is installed between the front top block 35 and the rear top block 34, and the elastic pre-tensioning member is the above-mentioned disc spring 36. By setting up a double top block structure, in actual operation, when the adjusting slider 371 is in the wide position, the rear top block 34 is in contact with the adjusting slider 371, and due to the elastic force of the disc spring 36, the front top block 35 is thrust and pre-tightened on the ball head 32, so that the ball head 32 is pressed against the inner wall of the ball hole section 314 with a certain pre-pressure. Conversely, the rear top block 34 is pushed by the disc spring 36, and the rear top block 34 pushes the adjusting slider 371 backward, and the adjusting slider 371 pushes the limit sleeve 116 backward, so that the limit sleeve 116 can be abutted against the step surface 3133 of the straight hole section 313 with a certain pressure to achieve pre-tightening. Through this structural form, the ball head 32 can always have a certain damping force relative to the clamping head 312, and the limiting sleeve 116 can always have a certain damping force relative to the rotating body 311. There is damping while the endoscope clamping mechanism 2 is free to move, which can prevent the endoscope clamping mechanism 2 from losing weight or other types of uncontrolled states due to external forces, and the position relationship can be easily adjusted by manually applying force. Before locking, there is no need to manually support the angle and position of the endoscope and the rotating body 311.

[0055] In order to meet the spatial layout with the above-mentioned gradually decreasing spacing, in this embodiment, the rear side wall of the rear top block 34 is a first wedge-shaped surface 342 that gradually tilts backward along the positive moving direction of the adjusting slider 371, and the front end surface of the limiting sleeve 116 is a first vertical surface 1161 parallel to the positive moving direction of the adjusting slider 371. The first wedge-shaped surface 342 and the first vertical surface 1161 are arranged relative to each other so that the spacing between the rear side wall of the top block and the front end wall of the connecting shaft 11 gradually decreases along the positive moving direction of the adjusting slider 371.

[0056] At the same time, in order to satisfy the bidirectional drive of the above-mentioned top block and the limiting sleeve 116, an adjustment hole 315 extending up and down is opened on the side wall of the rotating body 311 of the ball seat 31 along the radial direction of the through hole 111, and the adjustment structure 37 includes an adjustment rod 372 inserted in the adjustment hole 315 along the up and down direction. The diameter of the adjustment hole 315 is larger than the diameter of the adjustment rod 372 so that the adjustment rod 372 can float in the adjustment hole 315 along the front and back direction. The adjustment rod 372 is connected to the adjustment slider 371 to drive the adjustment slider 371 to move up and down. In this way, when the disc spring 36 pushes the rear top block 34, the rear top block 34 pushes the adjustment slider 371 and the adjustment rod 372 to float backward synchronously, so that the limiting sleeve 116 can be pushed.

[0057] In order to realize the up and down movement of the adjusting rod 372 on the adjusting slider 371, a through threaded hole is provided at the front and rear center position of the adjusting slider 371, and the rod body of the adjusting rod 372 is provided with an external thread threadedly connected to the threaded hole. The adjusting rod 372 and the ball seat 31 are assembled to limit and prevent disengagement. When the adjusting rod 372 rotates, it drives the adjusting slider 371 to move back and forth along the axial direction of the adjusting rod 372, and the upper end of the adjusting rod 372 is sleeved with a third locking wheel 373.

[0058] Specifically, the longitudinal section of the above-mentioned adjusting slider 371 is a trapezoid, the front side wall thereof is a second wedge surface 3711 adapted to fit with the first wedge surface 342, and the rear side wall is a second vertical surface 3712 adapted to fit with the first vertical surface 1161. The rear side wall of the rear top block 34 is provided with a guide groove 341 with an opening facing backwards, the bottom surface of the guide groove 341 constitutes a second wedge surface 3711, and the left and right side arms of the guide groove 341 are clamped on the left and right sides of the adjusting slider 371. Through the cooperation between the first wedge surface 342 and the second wedge surface 3711, when the adjusting slider is moved upward, the second wedge surface 3711 moves along the first wedge surface 342, and at the same time pushes the rear top block 34 to move forward, and in reaction, the rear top block 34 pushes the adjusting slider 371 to move backward in the opposite direction, thereby pushing the limit sleeve 116 to move backward, and finally realizing double-line locking.

[0059] The second locking wheel 26 is tightened, and then the ball seat 31 and the adjusting rod 372 are rotated to adjust the angle and position of the clamping mechanism 2. After the position is determined, the third locking wheel 373 is screwed in the positive direction, and the adjusting rod 372 rotates, driving the adjusting slider 371 to move upward. During the upward movement of the adjusting slider 371, the second wedge surface 3711 moves upward relative to the first wedge surface 342. At this time, due to the smaller space, the rear top block 34 is driven to move forward and push the front top block 35 to be pressed on the ball head 32. At the same time, the adjusting slider 371 is moved backward by the reverse action of the rear top block 34, and squeezes the limiting sleeve 116 to move backward, so that the fiber sleeve is pressed on the rotating body 311. The upward movement of the adjusting slider 371 can tighten the adjacent isolation space and lock the freedom of the ball head 32.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate but not to limit the technical solutions of the present invention, and any equivalent substitutions of the present invention and any modifications or partial substitutions that do not depart from the spirit and scope of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. An endoscope clamping head, comprising a clamping mechanism, an angle adjustment mechanism and a clamp connecting mechanism, wherein the clamping mechanism is connected to the angle adjustment mechanism, and the angle adjustment mechanism is connected to the clamp connecting mechanism, characterized in that: The clamp connection mechanism comprises a connection shaft, and the angle adjustment mechanism comprises a ball seat, a through hole extending forward and backward is provided in the ball seat, the front end of the through hole is a ball hole section, and the rear end is a straight hole section, the connection shaft is connected to the straight hole section from back to front and is rotatably assembled with the straight hole section, an anti-slipping piece which cooperates with the straight hole section in the front-back direction is fixed on the connection shaft; a ball head is limitedly assembled at the ball hole section, the ball head is connected to a connecting rod extending outward, the connecting rod is fixedly connected to the clamp mechanism, a top block is arranged at the rear side of the ball head in the through hole, and the rear side wall of the top block An adjusting slider is attached, and the adjusting slider is connected to an adjusting structure for driving the adjusting slider to reciprocate in the radial direction of the through hole in the positive and reverse directions. The distance between the rear side wall of the top block and the front end wall of the connecting shaft gradually decreases along the positive movement direction of the adjusting slider. When the adjusting slider is driven to move forward, the front and rear side walls of the adjusting slider respectively push the top block to move forward to press the ball head in the ball hole section to lock and fix the ball head, and push the connecting shaft or the anti-slip component to move backward to press the connecting shaft in the straight hole section to stop the connecting shaft from rotating circumferentially relative to the ball seat.

2. The endoscope clamping head according to claim 1, characterized in that: The top block includes a front top block and a rear top block which are inserted into the through hole for guidance. The front top block is matched with the ball head for abutment, and the rear side wall of the rear top block is matched with the adjusting slider. An elastic pre-compression member is installed between the front top block and the rear top block.

3. The endoscope clamping head according to claim 2, characterized in that: The rear side wall surface of the rear top block is a first wedge-shaped surface that gradually tilts backward along the positive moving direction of the adjusting slider, and the front end surface of the anti-slip component is a first vertical surface parallel to the positive moving direction of the adjusting slider. The first wedge-shaped surface and the first vertical surface are arranged relative to each other so that the distance between the rear side wall of the top block and the front end wall of the connecting shaft gradually decreases along the positive moving direction of the adjusting slider.

4. The endoscope clamping head according to claim 3, characterized in that: An adjustment hole extending up and down is opened on the side wall of the ball seat along the radial direction of the through hole. The adjustment structure includes an adjustment rod inserted in the adjustment hole along the up and down directions. The diameter of the adjustment hole is larger than the diameter of the adjustment rod so that the adjustment rod can float in the adjustment hole along the front and back directions. The adjustment rod is connected to the adjustment slider to drive the adjustment slider to move up and down.

5. The endoscope clamping head according to claim 4, characterized in that: A through threaded hole is provided at the front and rear center positions of the adjusting slider, an external thread is provided on the rod body of the adjusting rod which is threadedly connected to the threaded hole, the adjusting rod and the ball seat are limited and anti-detached, and when the adjusting rod rotates, the adjusting slider is driven to reciprocate along the axial direction of the adjusting rod.

6. The endoscope clamping head according to claim 5, characterized in that: The longitudinal section of the adjusting slider is a trapezoid, the front side wall of which is a second wedge-shaped surface adapted to fit with the first wedge-shaped surface, and the rear side wall is a second vertical surface adapted to fit with the first vertical surface.

7. The endoscope clamping head according to claim 6, characterized in that: The rear side wall of the rear top block is provided with a guide groove with its opening facing backwards, the bottom surface of the guide groove forms the second wedge-shaped surface, and the left and right support arms of the guide groove are clamped on the left and right sides of the adjusting slider.

8. The endoscope clamping head according to any one of claims 1 to 6, characterized in that: The straight hole section is a stepped hole section structure, including a small diameter section at the rear end and a large diameter section at the front end. The connecting shaft guide is inserted in the small diameter section. The anti-slip component includes a limit sleeve sleeved on the front end of the connecting shaft. The rear end surface of the limit sleeve is in contact with the step surface of the straight hole section to achieve anti-rotation limit of the connecting shaft relative to the ball seat through friction between the two.

9. The endoscope clamping head according to any one of claims 1 to 6, characterized in that: The clamping mechanism includes a fixed splint connected to a connecting rod, a movable splint is movably mounted on the fixed splint, a clamping space for placing an endoscope is formed between the fixed splint and the movable splint, a driving handle for driving the two to be relatively close together is connected between the movable splint and the fixed splint, and a spring is also connected for driving the two to move away from each other.

10. The endoscope clamping head according to any one of claims 1 to 6, characterized in that: A square hole for inserting the connecting end of the clamp is provided at the rear end of the connecting shaft, and a locking handle is connected to the side wall of the square hole.

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