CN221357169U - Clamping device - Google Patents

Abstract

The utility model discloses a clamping device which is used for clamping and fixing a medical instrument on a mounting seat and comprises a claw (1) and a shell (4) which can be fixedly connected with a medical instrument body; a jacking block (3) is movably arranged on one side of the clamping jaw (1) in a penetrating manner, a loop bar (2) is also arranged on the clamping jaw (1) in a penetrating manner, the jacking block (3) is used for jacking a mounting seat clamped in the clamping jaw (1), the loop bar (2) is also arranged on the side of the clamping jaw (1), and the other end of the loop bar (2) is sleeved in the shell; the sleeve rod (2) is internally provided with a stand column (9) which can move relative to the sleeve rod, the stand column (9) is fixedly connected with the shell (4), and the moving direction of the stand column (9) is in the same direction as the clamping direction of the clamping jaw (1); the rotary rod is screwed with the shell (4) or the loop bar (2), the screwing direction is the same as the clamping direction of the clamping jaw (1), and the rotary rod is abutted with the upright post (9) after the screwing, so that the jacking block (3) clamps the mounting seat.

Description

Clamping device

Technical Field

The utility model belongs to the technical field of medical appliances, and particularly relates to a clamping device.

Background

When an operation table is used for operation, a doctor often needs to hold the instrument for operation, but the doctor often can shake hands, uneven force application or other reasons to cause operation failure of the operation terminal operation instrument, at the moment or when the operation is started, a clamping device needs to be arranged on a mounting seat of the operation table for clamping the operation instrument, and the clamping device should realize stable clamping of the clamped instrument as much as possible, however, no clamping device which is convenient to operate and stably clamps is available in the prior art to achieve the purpose.

The inventor knows the surgical instrument even though the clamping device is used for clamping the surgical instrument, but the defects of inconvenient use and incapability of stable clamping exist, for example, more snake-shaped arms are applied to an operating table, the snake-shaped arms are applied to various surgical operations or endoscope operations, the root end of each snake-shaped arm (the root end corresponds to a free suspension end and is not the free suspension end) is generally fixed in a shell, the shell is fixed on a mounting seat, when the surgical instrument is used, the clamping device needs to be distributed to operate so as to fix the shell on the mounting seat, if a clamping head carrying the shell of the snake-shaped arm is required to be clamped on the mounting seat, and then the clamping head is required to clamp the shell of the root end of the snake-shaped arm, in the surgical operation process, the operation steps are increased, and the position is shifted for a plurality of times according to the requirement, the clamping action is required to be carried out for each shift, and thus a plurality of invariants are brought to clinical operations; the existing clamping device cannot freely adjust the direction and angle of the surgical instrument, and the problems are the problems to be solved in the prior art.

Other medical devices known to the inventor are convenient and practical clamping devices, but many clamping devices have poor adaptability or fusion with the medical device body or are inconvenient to use, and other problems are brought about during the adaptation and use.

Disclosure of Invention

The utility model provides a clamping device aiming at the problems or one of the problems, and aims to solve the problems that the clamping tool in the prior art has a plurality of operating parts, is complicated in action and cannot be conveniently displaced, and the utility model can realize stable clamping and convenient displacement and can adjust the angle and the azimuth of a medical instrument.

The mount in the present utility model is not limited to a plate-like body or various frames, and may be formed in various irregular shapes such as a cylindrical body, a spherical body, etc.; the shell is not limited to a closed shell, such as an open shell, or an open shell with peripheral surfaces not connected end to end, and the like, and belongs to the shell category; the upright post is not limited to be round, and can be in other shapes; the clamping tightness direction of the clamping jaw is the direction of the expanding or shrinking trend of the clamping space of the clamping jaw, and does not refer to a single direction.

The technical scheme of the utility model is as follows:

A clamping device for clamping and fixing a medical instrument to a mounting base, characterized in that: the clamping device comprises a clamping jaw, a shell and a clamping device, wherein the clamping jaw is used for clamping the mounting seat, and the shell can be used as a medical instrument body or a part of the medical instrument body or is fixedly connected with the medical instrument body;

A jacking block is movably arranged on one side of the clamping jaw in a penetrating manner, and is used for jacking a mounting seat clamped in the clamping jaw, a first flange is arranged at the other end of the jacking block and is abutted to the outer side face of the clamping jaw so as to limit the jacking block to penetrate through the side face of the clamping jaw; a loop bar is arranged on the side of the claw in a penetrating way, a second flange is arranged at one end of the loop bar and is abutted to the inner side of the claw, and the other end of the loop bar is sleeved in the shell; the sleeve rod is internally provided with a stand column which can move relative to the sleeve rod and has the same moving direction as the clamping and loosening direction of the clamping jaws, the stand column is fixedly connected with the shell or forms a part of the shell, or the sleeve rod is also provided with a stand column which can move relative to the shell and has the same moving direction as the clamping and loosening direction of the clamping jaws, and the stand column is fixedly connected with the sleeve rod or forms a part of the sleeve rod; the moving direction of the upright posts is the same as the clamping tightness direction of the clamping jaws;

The clamping device further comprises a rotating rod protruding out of the outer side of the shell, screwed with the shell or the loop bar, the screwing direction of the threads is the same as the clamping tightness direction of the clamping jaw, and the rotating rod is abutted with the upright post after screwing, so that the jacking block clamps the mounting seat.

In the utility model, the outer diameter of the first flange is generally larger than the maximum outer diameter of the penetrating hole of the top block; the rotating rod passes through the shell and is abutted with the upright post so that the jacking block clamps the mounting seat, and the direction can be adjusted simultaneously by adjusting the relative angle between the shell and the first flange when necessary, and the rotating rod protrudes out of the shell for holding and rotating; the stand column used for limiting is arranged on the loop bar, so that the loop bar can be prevented from being separated from the shell when the loop bar moves (when the clamping jaw clamps or loosens).

In the utility model, the rotating rod can be screwed with the shell or the loop rod, so that the upright post is pushed to abut against the first flange (when the upright post is fixedly connected with the shell or the upright post is a part of the fixed connection of the shell), the first flange is fixedly connected with the jacking block, so that the clamping jaw clamps the mounting seat, and the inner end of the rotating rod is abutted against the upright post and cannot move, and the screw thread screwing cannot automatically retract, so that the medical instrument is clamped on the mounting seat, and the root end of the snake-shaped arm is clamped on the mounting seat.

In some or one embodiment of the clamping device of the utility model, the jaws are U-shaped jaws.

In some or one embodiment of the clamping device, the ejector blocks are arc-shaped ejector blocks which are symmetrically distributed in an arc shape, and guide slopes are further arranged on the arc-shaped ejector blocks and are convenient to clamp.

In some or one embodiment of the clamping device according to the utility model, the root of the claw or/and the end of the free end are further provided with a transition concave arc for increasing the elasticity of the socket.

In some or one embodiment of the clamping device of the utility model, the claw is further provided with an open process hole.

In some or one embodiment of the clamping device of the utility model, at least one end of the post is defined on the housing in a flange or partially material cut-out plane.

In some or one embodiment of the clamping device of the utility model, the waist of the loop bar is provided with a slot for passing the upright or at least a part of the upright; or in some or one embodiment of the clamping device, the housing is formed with a recessed groove allowing the post of the male portion to move; when the loop bar is protruded to form the upright post, the shell is correspondingly provided with a concave groove for the upright post to move in the same direction towards the clamping tightness direction of the clamping jaw so as to clamp or unclamp the clamping jaw.

In some or one embodiment of the clamping device of the utility model, the bottom of the housing is further provided with an extension extending towards the periphery thereof, and the extension is provided with a buckle or a threaded hole or a through hole connected with the medical instrument body.

In some or one embodiment of the clamping device of the utility model, the loop bar is part of the housing and is fixedly connected with the housing, or the loop bar is movably connected with the housing.

In some or one embodiment of the clamping device of the present utility model, the first flange is movably abutted with the housing, and the end circumference of the first flange is provided with a fluted disc and/or at least one tooth, the housing in the movable abutted position is provided with at least one tooth and/or fluted disc meshed with each other, or the end circumference of the first flange and the housing in the movable abutted position are provided with fluted discs meshed with each other. In the utility model, a fluted disc can be arranged on at least one end face of the first flange and the shell, corresponding teeth are arranged on the other corresponding end face for clamping, and the denser the teeth on the fluted disc are, the more precise the steering adjustment of the instrument is; of course, in alternative embodiments, a bi-directional toothed disc may be provided for adjustment to snap or mesh with each other.

The scheme has at least and is not limited to the following advantages:

According to the utility model, the opening and closing states of the clamping jaws and the tightness states of the clamping jaws can be adjusted by rotating the rotating rod, when the first flanges of the shell and the jacking block are independent, the angle or the orientation of the corresponding medical instrument can be adjusted by adjusting the relative angles of the opposite surfaces of the shell and the jacking block, and the process can be realized by loosening or tightening the rotating rod. The shell is provided with the extension part which can be directly fixed on one side surface of the corresponding medical instrument body, so that the adaptability and convenience of connection with the corresponding medical instrument body are improved, and compared with the current situation that the medical instrument in the prior art is not easy to be perfectly jointed with the clamping and steering mechanism, the utility model solves the problem relatively well.

Drawings

FIG. 1 is a schematic diagram of the external structure of a clamping device;

FIG. 2 is a schematic exploded view of a clamping device;

FIG. 3 is a schematic view of the clamping device from another perspective;

Fig. 4 is a schematic structural view of the cooperation of the claw and the top block of the clamping device;

FIG. 5 is a schematic view of the structure of the loop bar;

FIGS. 6a to 6f are schematic structural views of the clamping device in several states;

Fig. 7 to 8 are schematic views of another structure of the clamping device (only the housing, the rotating rod and the loop rod are shown);

FIG. 9 is a schematic view of the structure of the clamping device in use;

The drawings are marked with the following description: the novel steel plate type steel plate wrench is characterized in that a claw is 1, a concave arc is 11, a process hollowing arc is 12, a sleeve rod is 2, a groove body is 21, a second flange is 22, a threaded hole is 23, a concave groove is 24, a top block is3, a first flange is 31, a guiding slope is 32, a shell is 4, an extension part is 41, a rotating rod is 7, a fluted disc is 8, and a stand column is 9.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the following description will be taken in conjunction with the accompanying drawings in the embodiments of the present utility model, so that the technical solutions of the present utility model are easier to understand and master. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. It will be apparent that the embodiments described are some, but not all, embodiments of the utility model. The components of the embodiments of the utility model generally described and illustrated in the figures herein can be arranged and designed in a wide variety of different configurations, i.e., the utility model encompasses any alternatives, modifications, rearrangements, equivalents, etc. that are within the spirit and scope of the utility model as defined by the following claims. In the description of the present utility model, it should be noted that, the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that is commonly put in use of the product of this application, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Example 1

The present embodiment discloses a clamping device for clamping and fixing a medical device on a mounting base (the mounting base is shown in all embodiments), and the clamping device is fixedly or detachably connected with the medical device, the clamping device is provided with a housing 4, the housing 4 is fixedly or detachably connected with a medical device body, an extension portion 41 extending towards the periphery of the housing 4 can be arranged at the bottom of the housing 4 as shown in fig. 2 and 9, and a buckle or a threaded hole 23 or a through hole connected with the medical device body is arranged on the extension portion 41, so that the connection is convenient to detach.

As shown in fig. 1 to 5, the clamping device includes a top block 3 and a jaw 1, the top block 3 movably passes through the jaw 1, a first flange 31 is disposed on the back of the top block 3, the first flange 31 is used to block the top block 3 from completely passing through and separating from the jaw 1, as the top block 3 movably passes through the jaw 1, a gap in the jaw 1 continuously changes along with the movable passing through of the top block 3, a mounting seat (not shown in this embodiment, the mounting seat is clamped in the jaw 1) is sleeved in the jaw 1 and is tightly supported by the movable top block 3, the mounting seat is not limited to a specific shape, in other alternative embodiments, the mounting seat can be in various shapes such as a flat shape, a frame shape or a strip shape, and the like, after the mounting seat is clamped in the jaw 1, the top block 3 can tightly support, but the above components are not sufficient to realize the whole function, and the clamping device also needs other components.

The clamping device shown in fig. 1-2 further comprises a shell 4, the shell 4 can be connected to a shell of a medical instrument, as shown in fig. 9, the shell 4 is connected to a shell at the root of a snake-shaped arm, the connection can be a fixed connection or a detachable connection mode such as a screw connection, a buckle connection and the like, and the clamping device shown in fig. 3 adopts a screw or bolt connection mode; in addition, the housing 4 may be in various forms such as a incompletely closed form, for example, a semi-closed housing 4 or an open housing 4, or the housing 4 is only an L-shaped arm, for example, as shown in fig. 1-2, in this embodiment, the housing 4 is a closed housing 4, the side of the top block 3 of the claw 1 is further provided with a sleeve rod 2 with a second flange 22, the second flange 22 is reversely abutted against the inner side of the claw 1, and the other end of the sleeve rod 2 is sleeved in the housing 4; the second flange 22 provided on the lever 2 prevents the lever 2 from being completely separated from the claw 1, the end of the second flange 22 remote from the lever 2 is provided with a threaded hole 23, the threaded hole 23 is in threaded engagement with the rotating lever 7 so that the rotating lever 7 becomes a part of the clamping device and cannot fall or slide off, the rotating lever 7 continues to penetrate the end of the lever 2 inwards, the outer part of the rotating lever 7 can be sleeved with a holding handle, the rotating lever 7 is connected with the outer holding handle so as to facilitate holding rotation, an oval or long-groove-shaped groove body 21 penetrating or at least partially penetrating the lever 2 is formed on the lever 2, and the groove body 21 can be adaptively provided with other various shapes in other alternative embodiments.

The column 9 is inserted into the groove 21, at least one end of the column 9 is fixed to the housing 4 to form a part of the housing 4, the column 9 can move axially in the groove 21 along the length direction of the groove 21 of the sleeve 2 as shown in fig. 3, the axial movement is realized by the power given by the abutting of the rotating rod 7, the rotating rod 7 rotates in the housing 4 to abut against the periphery of the column 9, the column 9 is circular in this embodiment, and the column 9 can be adaptively arranged as a rod body with various other shapes such as a flat rod in other alternative embodiments.

As shown in fig. 1-5, the clamping jaw 1 of the clamping device is a U-shaped clamping jaw 1, and as shown in fig. 1, 2 and 4, in the embodiment, the jacking block 3 is an arc-shaped jacking block 3 and is symmetrically distributed in an arc shape, and the arc-shaped jacking block 3 is provided with a guide slope 32, so that the guide slope 32 is convenient to clamp; the root and the end of the free end of the claw 1 as shown in fig. 1 and 5 are also provided with a transition concave arc 11 for increasing the sleeving elasticity. As shown in fig. 2-4, the claw 1 is also provided with an open process hollow arc 12; at least one end of the post 9 is defined on the housing 4, as shown in fig. 2, the defined portion being a flange in this embodiment, although it is possible in other or alternative embodiments to define the portion of the material in a plane. As shown in fig. 2 and 5, in the present embodiment, the hollow groove 21 is provided at the waist of the loop bar 2, and the dimension of the groove 21 in the length direction (the same as the screwing-in and screwing-out direction of the rotation bar 7) is larger than the cross-sectional dimension of the column 9, so that the column 9 can drive the housing 4 to move in the groove 21 (the moving direction is the same as the screwing-in and screwing-out direction of the rotation bar 7).

The application of the clamping device of the present solution to a specific serpentine arm (mount not shown) is shown in fig. 9: the root end of the serpentine arm (the root end corresponds to the free end and the root end is the non-free end) is fixed to one side of the housing 4 of the present clamping device.

In a more preferred embodiment, the first flange 31 is movably abutted with the opposite end of the housing 4, and the end circumference of the first flange 31 is provided with a fluted disc 8 and/or at least one tooth, the housing 4 in the movable abutted position is provided with at least one tooth and/or fluted disc 8 engaged with each other, or the end circumference of the first flange 31 and the housing 4 in the movable abutted position are provided with toothed discs 8 engaged with each other. As shown in fig. 1, 2 and 4, in this embodiment, the end circumference of the first flange 31 and the housing 4 at the movable butt position are both provided with toothed discs 8, and the toothed discs 8 at opposite positions are engaged with each other, so that the angle of the medical apparatus carried on the housing 4 relative to the claw 1 can be conveniently and accurately adjusted.

As shown in fig. 1 to 6d, the present embodiment implements the clamping function according to the following actions:

As shown in fig. 1-2 and 6 a-6 d, the rotating rod 7 protruding from the holding handle end of the housing 4 is screwed, so that the rotating rod 7 gradually rotates towards the jaw 1, the rotating rod 7 is changed from a non-contact upright post 9 to a rotating rod 7 contact and abutting upright post 9, and in this embodiment, the upright post 9 is fixedly connected with the housing 4, so that the rotating rod 7 rotates to abut the upright post 9 and drive the housing 4 to abut against and tightly abut against the first flange 31 (the first flange 31 is fixedly connected with the top block 3), and at this moment, the top block 3 also clamps the mounting seat in the jaw 1, that is, the mounting seat in the jaw 1 is clamped by the top block 3 is driven by linkage, so that the medical instrument (the medical instrument and the clamping device are fixedly connected with the clamping device) is indirectly clamped, positioned and fixed on the mounting seat.

Furthermore, the present embodiment may further implement the clamping and steering function according to the following actions:

This clamping device sets up casing 4 and kicking block 3 separation, can more conveniently rotate the orientation of casing 4 and realize turning to the regulation to the last apparatus part of casing 4, in the embodiment as shown in fig. 1~ 2, adopts the mode of two-end fluted disc 8 intermeshing to realize the centre gripping and turns to the function:

Namely, when the angle and the position of the medical apparatus relative to the mounting seat (the mounting seat is fixed) need to be adjusted, the upright post 9 and the inner end face of the rotating rod 7 are not contacted when the rotating rod 7 is in a retreating state, and the top block 3 can also partially withdraw from the side wall of the claw 1, so that the mounting seat in the claw 1 can also be loosened by the claw 1, and the claw 1 (the claw 1 carries the clamping device) can move on the mounting seat; because the rotating rod 7 is retracted and is in non-contact with the upright post 9, the shell 4 (the shell 4 carries the upright post 9) is far away from the fluted disc 8 at the end periphery of the first flange 31 of the jacking block 3, the fluted discs 8 at the two ends (the fluted disc 8 of the shell 4 and the fluted disc 8 of the jacking block 3) are not meshed any more, the angle of the rotating shell 4 relative to the mounting seat (the end part of the first flange 31) is aligned to the required position until the fluted disc 8 at the two ends is meshed, the rotating rod 7 is screwed up to abut against the upright post 9, the meshing fluted disc 8 at the end periphery of the shell 4 and the end periphery of the first flange 31 is locked, and meanwhile, the mounting seat in the clamping jaw 1 is locked due to the meshing locking of the fluted discs 8 at the two ends, so that the clamping device (carrying medical equipment) can realize the position adjustment of the relative mounting seat and the tilting or rotating angle adjustment of the relative to the mounting seat, namely the steering clamping function of the clamping device and the medical equipment carried on the shell 4 of the clamping device.

As shown in fig. 2, 3 and 9, the extension 41 on the housing 4 is not limited to the bottom surface of the housing 4, and the extension 41 may be fixedly connected with a corresponding medical device, and the fixed connection manner is not limited to the threaded connection shown in the drawings, and may be various possible manners, such as a snap-fit connection.

Example two

In this embodiment, unlike the first embodiment, the threaded hole 23 is not formed in the loop bar 2, but a threaded hole screwed with the rotating bar 7 is formed in the housing 4, specifically, as shown in fig. 6a, in fig. 6a of this embodiment, the inner end of the rotating bar 7 is far away from the side wall of the upright post 9, the housing 4 is not in contact with the end periphery of the first flange 31, at this time, the clamping device is in a loose state, and at this time, the clamping device (carrying medical equipment) can perform position shifting and steering adjustment on the mounting seat.

Example III

In this embodiment, unlike the first embodiment, the end of the loop bar 2 away from the second flange 22 is spaced from the inner wall of the housing 4 by a certain distance, as shown in fig. 6b, in this embodiment, the threaded hole 23 is provided at the end of the loop bar 2 instead of the housing 4, in this embodiment, the rotating bar 7 abuts against the upright post 9, at this time, the housing 4 abuts against the end of the first flange 31, the top block 3 is abutted against, and the mounting seat in the claw 1 is clamped firmly, so that the clamping device and the medical apparatus carried by the clamping device cannot move on the mounting seat, and cannot rotate and adjust the direction.

Example IV

Unlike the first embodiment, the end of the loop bar 2 away from the second flange 22 is axially gapless from the inner wall of the housing 4, as shown in fig. 6c, in the embodiment shown in the present embodiment, the threaded hole engaged with the rotating bar is disposed on the housing 4 instead of the loop bar 2, the rotating bar 7 is away from the upright post 9, the upright post 9 is located on the right side of the groove 21 (of the loop bar 2), the top block 3 has a certain gap with the body of the jaw 1 (i.e. the first flange 31 has a certain gap with the body of the jaw 1), the first flange 31 also has a certain gap with the end periphery of the housing 4, at this time, the mounting seat in the jaw 1 is released, the clamping device (the housing 4 of the clamping device carries medical equipment) can adjust the position relative to the mounting seat, and the end periphery of the housing 4 also has a certain gap with the first flange 31, so that the clamping device (the housing 4 of the clamping device carries medical equipment) can adjust the tilt angle position or yaw direction relative to the mounting seat; and the clamping device shown in fig. 6d is in a state after clamping and fastening as shown in fig. 6 c.

Example five

As shown in fig. 6e to 6f, this embodiment differs from the first embodiment in that only one end of the post 9 is disposed on the housing and is firmly fixed to the housing, the other end of the post 9 is not in contact with or fixed to the housing, in the embodiment shown in fig. 6f, the screw hole engaged with the rotation lever is disposed on the housing 4 instead of the socket lever 2, and in the embodiment shown in fig. 6e, the screw hole 23 engaged with the rotation lever is disposed on the socket lever 2.

Example six

As shown in fig. 7, in the embodiment, unlike the first embodiment, only the lower side wall of the loop bar 2 is provided with the groove 21, that is, the upright 9 does not completely penetrate the loop bar 2, but at this time, the upright 9 is still fastened to the housing 4 or the upright 9 is still a part of the housing 4, the threaded hole engaged with the rotating bar is provided on the housing 4, the threaded hole on the housing 4 may be provided with only one section, and the inner end of the rotating bar may correspondingly abut against the upright 9.

Example seven

As shown in fig. 8, unlike the first embodiment, the upright post 9 is disposed on the loop bar 2, and the loop bar 2 has no groove 21, and the housing 4 is correspondingly provided with a recess 24 corresponding to the upright post 9, and the recess 24 allows the upright post 9 to move left and right. A screw hole engaged with the rotating rod is provided in the housing 4, and the inner end of the rotating rod can correspondingly abut against the end of the loop bar 2.

Claims (10)

1. A clamping device for clamping and fixing a medical instrument to a mounting base, characterized in that: the clamping device comprises a clamping jaw (1), wherein the clamping jaw (1) is used for clamping the mounting seat, and the clamping device further comprises a shell (4) which can be used as a medical instrument body or a part of the medical instrument body or is fixedly connected with the medical instrument body;

A jacking block is movably arranged on one side of the clamping jaw (1) in a penetrating manner, the jacking block (3) is used for jacking a mounting seat clamped in the clamping jaw (1), a first flange (31) is arranged at the other end of the jacking block (3), and the first flange (31) is abutted to the outer side face of the clamping jaw (1) so as to limit the jacking block (3) to penetrate through the side face of the clamping jaw (1);

The side of the claw (1) is also provided with a loop bar (2) in a penetrating way, one end of the loop bar (2) is provided with a second flange (22), the second flange (22) is abutted to the inner side of the claw (1), and the other end of the loop bar (2) is sleeved in the shell;

The sleeve rod (2) is internally provided with an upright post (9) which can move relative to the sleeve rod and has the same moving direction as the clamping jaw (1) in clamping tightness direction, the upright post (9) is fixedly connected with the shell (4) or the upright post (9) becomes a part of the shell (4), or the sleeve rod (2) is also provided with an upright post (9) which can move relative to the shell (4) and has the same moving direction as the clamping jaw (1) in clamping tightness direction, and the upright post (9) is fixedly connected with the sleeve rod (2) or the upright post (9) is a part of the sleeve rod (2) protruding outwards; the moving direction of the upright post (9) is the same as the clamping tightness direction of the clamping jaw (1);

The rotary rod (7) protrudes out of the shell (4), is screwed with the shell (4) or the loop bar (2), has the same direction as the clamping tightness direction of the clamping jaw (1) in the screwing direction, and is abutted with the upright post (9) after screwing, so that the jacking block (3) clamps the mounting seat.

2. Clamping device according to claim 1, characterized in that the jaws (1) are U-shaped jaws.

3. Clamping device according to claim 1, characterized in that the ejector block (3) is an arc-shaped ejector block and the arc-shaped ejector blocks are symmetrically arranged, and the arc-shaped ejector block (3) is further provided with a guiding slope (32).

4. Clamping device according to claim 1, characterized in that the root of the claw (1) or/and the end of the free end are further provided with a transition concave arc (11) for increasing the elasticity of the socket.

5. Clamping device according to claim 1, characterized in that the jaws (1) are further provided with open process holes (12).

6. Clamping device according to claim 1, characterized in that at least one end of the upright (9) is defined on the housing (4) in the form of a flange or a plane of partial material cut-out.

7. Clamping device according to claim 1, characterized in that the waist of the loop bar (2) is provided with a slot (21) for letting through the upright (9) or at least a part of the upright (9); or a concave groove allowing the upright post (9) of the convex part to move is formed on the shell.

8. Clamping device according to claim 1, characterized in that the bottom of the housing (4) is further provided with an extension (41) extending towards its periphery, said extension (41) being provided with a snap or threaded hole or through hole for connection with the body of the medical device.

9. The clamping device of claim 1, wherein the loop bar is part of the housing and fixedly connected to the housing or the loop bar is movably connected to the housing.

10. Clamping device according to any of claims 1-9, characterized in that the first flange (31) is movably abutted to the housing (4), and the end circumference of the first flange (31) is provided with a toothed disc (8)/or at least one tooth, the housing (4) in the movable connection position is provided with at least one tooth/or toothed disc (8) engaged with each other, or the end circumference of the first flange (31) and the housing (4) in the movable connection position are both provided with engaged toothed discs (8).