CN108433763A - Magnetic control intraluminal tissue tractor - Google Patents

Abstract

The invention relates to a magnetically controlled intracavity tissue retractor, which includes a tissue holder for clamping tissue inside the cavity and a motion controller that cooperates with the tissue holder outside the cavity by magnetic attraction. When the motion controller moves outside the cavity, it can control the position and state of the tissue holder in the cavity, so as to realize the clamping and pulling of the clamped tissue through the tissue holder; it also includes a clamping storage controller, using The clamping and storage controller can accommodate the tissue holder; and the tissue holder can be pushed into the cavity by the clamping and storage controller to clamp the required tissue in the cavity, and the tissue holder enters the cavity to clamp After the tissue is held, the clamping and containing controller can release the tissue holder and leave it in the cavity. The invention has a compact structure, can realize in-cavity traction and in-vitro traction of tissues, reduces space occupied by in-cavity traction, saves space, reduces trauma caused by traction, reduces demands on surgical personnel, and is convenient to use.

Description

Magnetic controlled intraluminal tissue retractor

technical field

The invention relates to a retractor, in particular to a magnetically controlled intracavity tissue retractor, which belongs to the technical field of medical instruments.

Background technique

In minimally invasive surgery such as laparoscopic surgery or endoscopic surgery, since the surgeon's hand cannot enter the patient's body cavity, the body tissue that needs to be operated on is subject to self-suspended tissue, partially cut free tissue or internal organs (such as liver, spleen) When covering, these organs must be turned to expose the surgical operation site and continue the surgical process.

At present, when laparoscopic surgery is used to stretch the tissue to expose the surgical site, the method used is to make an additional puncture incision and place a long-rod surgical forceps for stretching and exposure. The long-rod surgical forceps occupy the operating space and affect the operation of the surgeon. At the same time, The puncture incision will increase the trauma and pain of the patient, and increase the scar on the patient's body surface and affect the appearance.

There is no safe and effective pulling exposure method in endoscopic surgery, and the extremely ineffective body position reversal or insertion of surgical wires is often used to pull through the mouth or anus, which greatly affects the operation process, not only increases the operation cost, but also increases the risk of surgery for patients , needs improvement.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a magnetically controlled intracavity tissue retractor, which has a compact structure, can realize intracavitary traction and in vitro traction of tissues, and reduces the space occupied by intracavity traction , save space, reduce traction trauma, reduce the demand for surgical personnel, easy to use, safe and reliable.

According to the technical solution provided by the present invention, the magnetically controlled intracavity tissue retractor includes a tissue holder for clamping tissue inside the cavity and a movement that cooperates with the tissue holder outside the cavity by magnetic attraction. A controller, when the motion controller moves outside the cavity, it can control the position of the tissue holder in the cavity, so as to realize the clamping and pulling of the clamped tissue through the tissue holder;

It also includes a clamping and storage controller, which can accommodate the tissue holder by using the clamping and storage controller; and through the clamping and storage controller, the tissue holder can be pushed into the cavity and clamp the required tissue in the cavity , after the tissue holder enters the cavity to hold the tissue, the holding controller can release the tissue holder to stay in the cavity.

The tissue holder includes a tissue clamp body for clamping tissue, a clamp body opening and closing control body for cooperating with the clamping controller to control the clamping state of the tissue clamp body, and magnetically attracting and cooperating with the motion controller The magnetic connection body of the tissue, the tissue clip body is connected with the clip body opening and closing control body through the clip body connection shaft joint, and the clip body opening and closing control body is connected with the magnetic suction connection body; the motion controller cooperates with the magnetic suction connection body through magnetic attraction , can control the position state of the tissue holder in the cavity.

The clamping storage controller includes a clamping control outer sleeve for moving the tissue holder and a clamping control push-pull rod for pushing or pulling the tissue holder to move in the clamping control outer sleeve;

Both the tissue holder and the clamping control push-pull rod are located in the cavity of the clamping control outer tube, and the tissue holder is located in front of the clamping control push-pull rod; The suction connector adopts a detachable connection, and the tissue clamp is in a closed state when it is located in the clamping control outer sleeve;

When the tissue clamp body is located outside the head port of the clamping control outer sleeve and most or all of the clamp body opening and closing control body is located in the clamping control outer sleeve, the tissue clamp body is in an open state; the tissue clamp body is located in the clamping control outer sleeve When the outside of the head end and a small part or all of the clamp body opening and closing control body is located outside the head port of the clamping control outer sleeve, the tissue clamp body is in a closed state.

The clamp body opening and closing control body includes an oval elastic ring or a quadrangular elastic body after being opened; when the elastic ring or elastic body is in an open state, it can make the tissue clip body in a closed state; the elastic ring or When the elastic body is in a compressed state, it can make the tissue clamp body in an open state; the elastic ring or elastic body located in the clamping control outer sleeve is in a compressed state.

The end of the opening and closing control body of the clip body is provided with a ball head, and the end of the magnetic connection body is provided with a ball head cover that allows the ball head to be embedded, and the ball head can rotate universally in the ball head cover.

The magnetic connecting body includes a block shape or a cylindrical shape, and the connection and cooperation between the magnetic connecting body and the clamping control push-pull rod includes a magnetic connection or a contact connection.

When the magnetic suction connecting body is cylindrical, the clamping control push-pull rod head at the head end of the clamping control push-pull rod can extend into the magnetic suction connection body, and the clamping control push-pull rod head of the clamping control push-pull rod can be connected with the magnetic suction body separation.

The magnetic connection body is wrapped with a flexible protective layer.

The motion controller includes an electromagnet with adjustable magnetic field strength.

A sleeve handle is provided at the tail end of the clamping control outer sleeve, and a clamping control push-pull rod handle is provided at the end of the clamping control push-pull rod.

Advantages of the present invention: the clamping controller can accommodate and control the tissue holders that have not entered the cavity through the clamping controller, and control the motion state of the tissue holders that enter the cavity to clamp the tissue through the motion controller , so as to realize the intracavitary traction and extracorporeal traction of the tissue. When the motion controller controls the position of the tissue holder outside the cavity, the tissue holder only clamps the tissue inside the cavity. Therefore, it can effectively reduce the space occupied by traction instruments in the cavity and save the operation space. Compared with existing surgical operations, the motion controller is magnetically connected to the tissue holder outside the cavity, which can effectively reduce the number of poking holes, thereby effectively reducing trauma. After the tissue traction is carried out through the cooperation of the motion controller and the tissue clamping gripper, the number of medical personnel can be reduced, and the possibility is provided for a single medical personnel to operate.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a schematic diagram of the tissue clamp body of the present invention being opened outside the head end of the clamping control outer sleeve.

Fig. 3 is a schematic diagram of the tissue clamp body of the present invention being closed outside the head end of the clamping control outer sleeve.

Fig. 4 is a schematic diagram of cooperation between the motion controller and the tissue holder of the present invention.

Fig. 5 is a schematic diagram of another embodiment of the present invention.

FIG. 6 is a schematic diagram of the structure corresponding to the implementation of FIG. 5 where the tissue clamp body is opened outside the head end of the clamping control outer sleeve.

FIG. 7 is a schematic diagram of the structure corresponding to the implementation of FIG. 5 where the tissue clamp body is closed outside the head end of the clamping control outer sleeve.

Explanation of reference signs: 1-clamping control outer casing, 2-clamping control push-pull rod, 3-sleeve handle, 4-clamping control push-pull rod handle, 5-power cord, 6-power plug, 7-tissue clip body, 8-clamp body connection shaft joint, 9-clamp body opening and closing control body, 10-clamping control push-pull rod head, 11-tubular magnetic suction connection body, 12-ball head body, 13-ball head cover, 14 - block magnetic connection body, 15 - electromagnet, 16 - body wall and 17 - tissue.

Detailed ways

The present invention will be further described below in conjunction with specific drawings and embodiments.

In order to achieve tissue traction in the cavity and outside the body, reduce the space occupied by the traction in the cavity, save space, reduce the trauma of the traction, and reduce the demand for surgical personnel, the present invention includes a tissue for clamping the tissue in the cavity 17 tissue holder and a motion controller that cooperates magnetically with the tissue holder outside the cavity, and when the motion controller moves outside the cavity, it can control the position of the tissue holder in the cavity, so as to The clamping and pulling of the clamped tissue 17 is realized by the tissue holder;

It also includes a clamping and storage controller, which can accommodate the tissue holder by using the clamping and storage controller; and through the clamping and storage controller, the tissue holder can also be pushed into the cavity and clamp the required tissue 17 in the cavity Hold, after the tissue holder enters the cavity to clamp the tissue 17, the clamping storage controller can release the tissue holder to stay in the cavity.

Specifically, the cavity specifically refers to the chest cavity, abdominal cavity and other positions of the human body. The tissue 17 is the organ tissue in the cavity, and the tissue 17 can be clamped by the tissue holder. The tissue holder is located in the cavity, and the motion controller is located Outside the chamber, the motion controller and the tissue holder are separated by a body wall 16 , as shown in FIG. 4 . The body wall 16 includes skin, blood vessels, etc., and the motion controller cooperates with the tissue holder through magnetic attraction, that is, the motion controller and the tissue holder are attracted to each other and approach the motion controller through magnetic energy. When the motion controller moves outside the cavity , the position and state of the tissue holder in the cavity can be controlled, so as to realize the clamping and pulling of the clamped tissue 17 by the tissue holder; to obtain the required surgical field of view and the like.

When the motion controller controls the position of the tissue holder outside the cavity, the tissue holder only clamps the tissue 17 inside the cavity. Therefore, it can effectively reduce the space occupied by traction instruments in the cavity and save operating space. In addition, compared with existing surgical operations, the motion controller adopts magnetic attraction cooperation with the tissue holder outside the cavity, which can effectively reduce the number of poking holes (the current poking holes generally include traction holes, video holes and operation holes), thus Can effectively reduce trauma. After the motion controller cooperates with the tissue holder to attract and connect the tissue 17, the number of medical personnel can be reduced, which provides the possibility for a single medical personnel to operate.

During specific implementation, when the tissue holder does not enter the cavity, it needs to be stored and stored by clamping and storing the controller, and the state of the tissue holder can be monitored by clamping and storing the controller. control, and when the tissue holder clamps the corresponding tissue 17 in the cavity, it is necessary to separate the tissue holder from the clamping storage controller so as not to affect the relationship between the motion controller and the tissue holder. Magnetic connection fit. In the embodiment of the present invention, the tissue holder that has not entered the cavity is accommodated and controlled by the clamping storage controller, and the motion state of the tissue holder that enters the cavity to clamp the tissue 17 is controlled by the motion controller, so that It can realize the intracavitary traction and extracorporeal traction of the tissue.

Further, the tissue holder includes a tissue clamp body 7 for clamping tissue 17, a clamp body opening and closing control body 9 for cooperating with the clamping controller to control the clamping state of the tissue clamp body 7, and The magnetic connection body that cooperates with the magnetic attraction of the motion controller, the tissue clip body 7 is connected with the clip body opening and closing control body 9 through the clip body connection shaft joint 8, and the clip body opening and closing control body 9 is connected with the magnetic suction connection body; the motion control The device can control the position and state of the tissue holder in the cavity by cooperating with the magnetic attraction of the magnetic connection body.

In the embodiment of the present invention, the tissue clamp body 7 is in the shape of a clamp, and the clamping state of the tissue clamp body 7 on the tissue 17 can be controlled by the clamp body opening and closing control body 9. When the clamp body opens and closes the control body 9, the tissue clamp body 7 When in the open state, the desired tissue 17 can be positioned in the tissue clamp body 7, and when the clamp body opening and closing control body 9 makes the tissue clamp body 7 in a closed state, the tissue 17 located in the tissue clamp body 7 can be placed Clamp. The tissue clamp body 7 is connected with the clamp body opening and closing control body 9 through the clamp body connecting shaft joint 8 . The magnetic connecting body is made of magnetic material, and the magnetic connecting body can cooperate with the motion controller through magnetic attraction. The clamp opening and closing control body 9 is connected with the magnetic connecting body. , the clamp body opening and closing control body 9 and the tissue clamp body 7 can be driven to follow the movement trend of the motion controller through the magnetic connection body, that is, to achieve the purpose of controlling the position of the entire tissue holder in the cavity.

Further, the clamping storage controller includes a clamping control overtube 1 for moving and accommodating the tissue holder and a clamping device for pushing or pulling the tissue holder to move within the clamping control overtube 1 Control push-pull rod 2;

Both the tissue holder and the clamping control push-pull rod 2 are located in the cavity of the clamping control outer sleeve 1, and the tissue holder is located in front of the clamping control push-pull rod 2; the clamping control push-pull rod 2 is located in the clamping control outer sleeve 1 The inner end is detachably connected with the magnetic connection body, and the tissue clamp body 7 is in a closed state when it is located in the clamping control outer sleeve 1;

When the tissue clamp body 7 is located outside the head port of the clamping control outer sleeve 1 and the clamp body opening and closing control body 9 is mostly or completely located in the clamping control outer sleeve 1, the tissue clamp body 7 is in an open state; the tissue clamp body When 7 is located outside the head end of the clamping control overtube 1 and a small part or all of the clamp body opening and closing control body 9 is located outside the head port of the clamping control overtube 1, the tissue clamp body 7 is in a closed state.

In the embodiment of the present invention, the clamping control overtube 1 and the clamping control push-pull rod 2 need to be made of materials that meet medical standards. The clamping control push-pull rod 2 can extend into the clamping control overtube 1, and the clamping control The push-pull rod 2 can move along the length direction of the clamp control sleeve 1 in the clamp control sleeve 1. Generally, the clamp control push-pull rod 2 is connected to the clamp control sleeve 1 in the clamp control sleeve 1. The tubes 1 are distributed coaxially. The head end of the clamping control push-pull rod 2 enters the clamping control outer sleeve 1, the tail end of the clamping control outer sleeve 1 is provided with a casing handle 3, and the end of the clamping control push-pull rod 2 is provided with a clamping control push-pull rod handle 4.

The tissue holder is located in the clamping control outer sleeve 1, the magnetic connection body in the tissue holder, the clamp opening and closing control body 9 and the tissue clamping body 7 are sequentially connected, and the tissue clamping body 7 is in the clamping control outer sleeve 1 The inside is closer to the head end of the clamping control outer sleeve 1. The clamping control push-pull rod 2 is located at the head end of the clamping control outer tube 1 adjacent to the magnetic connection body, and adopts a detachable connection with the magnetic connection body. When the tissue clamp body 7 is in the clamping control outer tube 1, The diameter of the outer cannula 1 can be controlled by clamping so that the tissue clip body 7 is in a closed state. When the tissue clip body 7 is in the closed state, the tissue clip body 7 cannot clamp the tissue 17 .

When it is necessary to use the tissue clip body 7 to clamp the tissue 17, use the clamp control push-pull rod 2 to push the magnetic connection body to move in the clamp control outer sleeve 1, so that the tissue clip body 7 and the clip body open and close the control body 9 and the magnetic connection body is gradually released from the head end of the clamping control outer sleeve 1. Specifically, when the tissue clips 7 are all located outside the head end of the clamping control outer sleeve 1 and the clip body opening and closing control body 9 is still located in the clamping control outer sleeve 1, since there is no constraint of the clamping control outer sleeve 1, The tissue clip body 7 can be in an open state. The corresponding tissue 17 in the cavity can be placed in the tissue clip body 7 by using the tissue clip body 7 in the opened state. With the continuous promotion of the clamping control push-pull rod 2, the clamp body opening and closing control body 9 will also be pushed out of the head end of the clamping control outer sleeve 1; , the tissue clip body 7 can be closed, and when the tissue clip body 7 is closed, the tissue 17 located in the tissue clip body 7 can be clamped. Since the clamping control push-pull rod 2 and the magnetic connection body are separably connected, when the clamping control push-pull rod 2 pushes the magnetic connection body into the cavity, the tissue holder and the clamping control outer sleeve 1 can be realized. The separation allows the tissue holder to enter the cavity smoothly. In addition, when the tissue clamp body 7 does not effectively clamp the tissue 17 in the cavity, the tissue clamper can be pulled back into the clamping control outer sleeve 1 through the clamping control push-pull rod 2, and then the above-mentioned clamping control push-pull can be repeated. The cooperation process between the pull rod 2 and the tissue holder will not be described in detail.

Further, the clip body opening and closing control body 9 includes an oval elastic ring or a quadrangular elastic body after being opened; when the elastic ring or elastic body is in an open state, it can make the tissue clip body 7 close state; when the elastic ring or elastic body is in a compressed state, it can make the tissue clip body 7 in an open state; the elastic ring or elastic body located in the clamping control outer sleeve 1 is in a compressed state.

Specifically, in Fig. 1, Fig. 2 and Fig. 3, the situation that the clip body opening and closing control body 9 is shown as an elastic ring, and Fig. 5, Fig. 6 and Fig. 7 show that the clip body opening and closing control body 9 is elastic In the case of the body, after the clip body opening and closing control body 9 is opened, the quadrilateral can be a rhombus or other quadrilaterals. Utilizing the elasticity of the elastic ring or the elastic body, the clamp body opening and closing control body 9 can be installed in the clamping control outer sleeve 1, and when the elastic ring or the elastic body is pushed out of the clamping control outer sleeve 1, the elastic ring or the elastic body can be used to The elasticity of the elastic body can be in the open state. Specifically, when the elastic ring or the elastic body is in a compressed state in the clamping control outer sleeve 1, the tissue clamp body 7 can also be in a compressed state by utilizing the diameter of the clamp control sleeve 1, so that the tissue clamp body can be adjusted. 7's containment.

The magnetic connecting body is block or cylindrical, and the connection and cooperation between the magnetic connecting body and the clamping control push-pull rod 2 includes magnetic connection. As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, it shows that the magnetic connection body is in the form of a cylinder, that is, the cylindrical magnetic connection body 11, and Fig. 5, Fig. 6 and Fig. 7 show that The magnetic connecting body is in the form of a block, that is, the block magnetic connecting body 14 . The specific shape of the magnetic connector can be selected according to needs, and will not be repeated here.

As shown in Fig. 5, Fig. 6 and Fig. 7, when the magnetic suction connecting body is a block magnetic suction connecting body 14, the end of the clip body opening and closing control body 9 is provided with a ball head 12, and the magnetic suction connecting body The end portion is provided with a ball head cover 13 that allows the ball head body 12 to be embedded, and the ball head body 12 can rotate universally in the ball head cover 13 . Through the cooperation between the ball head body 12 and the ball head cover 13, the clip body opening and closing control body 9 can be rotated relative to the block magnetic connection body 14, so as to satisfy the tissue clip body 7 and the clip body opening and closing control body 9 in the cavity. Clamping needs at different positions or angles in the body.

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, when the magnetic suction connecting body is cylindrical, the clamping control push-pull rod head 10 at the head end of the clamping control push-pull rod 2 can extend into the magnetic suction connecting body, and The clamping control push-pull rod head 10 of the clamping control push-pull rod 2 can be separated from the magnetic connection body. Of course, when the block-shaped magnetic-attraction connector 14 is used as the magnetic-attraction connector, a magnetic detachable connection between the clamping control push-pull rod 2 and the block-shaped magnetic-attraction connector 14 may also be adopted.

When adopting magnetic detachable connection, it also includes a power cord 5 and a power plug 6. When the power cord 5 and the power plug 6 are connected to an external power source, the clamping control push-pull rod head 10 of the clamping control push-pull rod 2 can be controlled. A corresponding magnetic field is obtained, so that it can be magnetically connected and matched with the block-shaped magnetic-attraction connecting body 14 or the cylindrical magnetic-attracting connecting body 11 . When the power cord 5 and the power plug 6 are separated from the external power supply, the magnetic field of the clamping control push-pull rod head 10 disappears, which is convenient to realize the clamping control of the push-pull rod head 10 and the cylindrical magnetic connection body 11 and the block magnetic connection body 14 separations.

In addition, the magnetic connection body is wrapped with a flexible protective layer. The protective layer can wrap the magnetic connection body, and the damage to the tissue 17 and the like by the magnetic connection body in the cavity can be avoided through the protective layer. During specific implementation, the motion controller includes an electromagnet 15 with adjustable magnetic field strength. When the magnetic field strength of the electromagnet 15 is adjusted, the connection strength between the motion controller and the tissue holder can be realized, which is well known to those skilled in the art and will not be repeated here.

Claims (10)

1. A magnetically controlled intracavity tissue retractor is characterized in that: it comprises a tissue holder for clamping tissue (17) in the cavity and adopts a magnetically attracting device for cooperating with the tissue holder outside the cavity A motion controller, when the motion controller moves outside the cavity, it can control the position of the tissue holder in the cavity, so as to realize the clamping and pulling of the clamped tissue (17) by the tissue holder; It also includes a clamping and storage controller, which can accommodate the tissue holder by using the clamping and storage controller; and through the clamping and storage controller, the tissue holder can also be pushed into the cavity and the tissue required in the cavity (17) For clamping, after the tissue holder enters the cavity to clamp the tissue (17), the clamping storage controller can release the tissue holder and leave it in the cavity. 2. The magnetically controlled intracavity tissue retractor according to claim 1, characterized in that: the tissue holder comprises a tissue clamp body (7) for clamping tissue (17), for and clamping The controller cooperates to control the clip body opening and closing control body (9) of the clamping state of the tissue clip body (7) and the magnetic connection body that is magnetically attracted to the motion controller, and the tissue clip body (7) is connected through the clip body The shaft joint (8) is connected with the clip body opening and closing control body (9), and the clip body opening and closing control body (9) is connected with the magnetic connection body; the motion controller can control the tissue through the magnetic attraction of the magnetic connection body. The position state of the holder in the cavity. 3. The magnetically controlled intracavity tissue retractor according to claim 2, characterized in that: the clamping storage controller includes a clamping control outer sleeve (1) for moving the tissue clamper and a Pushing or pulling the gripping control push-pull rod (2) that the tissue holder moves in the gripping control outer sleeve (1); Both the tissue holder and the clamping control push-pull rod (2) are located in the cavity of the clamping control outer sleeve (1), and the tissue holder is located in front of the clamping control push-pull rod (2); the clamping control push-pull rod (2) ) is in a detachable connection with the magnetic connector at the end located in the clamping control outer sleeve (1), and the tissue clamp body (7) is in a closed state when it is located in the clamping control outer sleeve (1); When the tissue clip body (7) is located outside the head port of the clamping control outer tube (1) and most or all of the clamp body opening and closing control body (9) is located in the clamping control outer tube (1), the tissue clamp body ( 7) In the open state; the tissue clip body (7) is located outside the head end of the clamping control outer tube (1) and a small part or all of the clip body opening and closing control body (9) is located at the head of the clamping control outer tube (1) When the port is outside, the tissue clip body (7) is in a closed state. 4. The magnetically controlled intracavity tissue retractor according to claim 2 or 3, characterized in that: the clamp body opening and closing control body (9) comprises an oval elastic ring or a quadrangular elastic ring after being opened. Body; when the elastic ring or elastic body is in an open state, it can make the tissue clip body (7) in a closed state; when the elastic ring or elastic body is in a compressed state, it can make the tissue clip body (7) in an open state; The elastic ring or elastic body located in the clamping control outer sleeve (1) is in a compressed state. 5. The magnetically controlled intracavity tissue retractor according to claim 2, characterized in that: a ball head (12) is arranged at the end of the clamp opening and closing control body (9), and the end of the magnetic connection body The ball head cover (13) that allows the ball head body (12) to be embedded is provided on the top, and the ball head body (12) can rotate universally in the ball head cover (13). 6. The magnetically controlled intracavity tissue retractor according to claim 3, characterized in that: the magnetic connecting body comprises a block shape or a cylindrical shape, and the connection between the magnetic connecting body and the clamping control push-pull rod (2) A connection fit includes a magnetic connection or a contact connection. 7. The magnetically controlled intracavity tissue retractor according to claim 6, characterized in that: when the magnetic connection body is in a cylindrical shape, the clamping control push-pull rod head ( 10) It can extend into the magnetic connection body, and the clamp control push-pull rod head (10) of the clamp control push-pull rod (2) can be separated from the magnetic connection body. 8 . The magnetically controlled intracavity tissue retractor according to claim 2 , wherein a flexible protective layer is wrapped on the magnetic connecting body. 9. The magnetically controlled intracavity tissue retractor according to claim 1 or 2 or 3 or 5 or 6 or 7 or 8, characterized in that: the motion controller includes an electromagnet (15) with adjustable magnetic field strength . 10. The magnetically controlled intracavity tissue retractor according to claim 3, characterized in that: a sleeve handle (3) is arranged at the tail end of the clamping control outer sleeve (1), and the clamping control push-pull rod (2 ) is provided with a clamping control push-pull handle (4).