CN112451121A

CN112451121A - Clamping device for medical instrument

Info

Publication number: CN112451121A
Application number: CN202011435598.9A
Authority: CN
Inventors: 马剑翔; 李天竹; 赵金红; 孟磊
Original assignee: Sano Xinchang Medical Technology Co ltd
Current assignee: Sino Medical Sciences Technology Inc
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-03-09

Abstract

The invention provides a clamping device of a medical instrument, which belongs to the technical field of medical instruments and comprises: a clamp adapted to clamp a medical instrument; a rocker arm; the connecting ball and the joint are internally provided with through holes; a connecting rope penetrates through the connecting ball and the through hole of the joint; one end of the connecting rope is connected with the clamp, and the other end of the connecting rope is connected with the handle assembly; the base is connected with the handle assembly through a rotating assembly; the base is suitable for being clamped on an operating table; according to the clamping device for the medical instrument, disclosed by the invention, in the operation process, the medical instrument can be stably clamped by the clamping device, so that the burden of both hands of medical staff is reduced; moreover, the medical instrument can be adjusted at any angle, the rotation is flexible, and medical care personnel can convey the medical instrument to a target position conveniently.

Description

Clamping device for medical instrument

Technical Field

The invention relates to the technical field of medical instruments, in particular to a clamping device of a medical instrument.

Background

Interventional therapy is an emerging discipline which integrates image diagnosis and clinical treatment and is rapidly developed in recent years. Under the guidance and monitoring of digital subtraction angiography machine, CT, ultrasonic and magnetic resonance imaging equipment, puncture needle, catheter and other interventional devices are used to introduce specific instrument into the pathological change part of human body via natural pore canal or small wound for minimally invasive treatment.

In the operation process of interventional therapy, medical personnel need handheld apparatus to carry out the operation, and this process needs longer time, and to the apparatus that the structure is more complicated, weight is great, and medical personnel hand-hold heavier medical instrument physical power consumption is bigger, and this brings certain risk to the accuracy nature of operation.

In the prior art, the instrument is supported by the support, but the support can only rotate along one plane and cannot rotate in multiple angles, so that much inconvenience is brought to the operation process.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defect that the support in the prior art can only rotate along one plane and cannot rotate in multiple angles, which brings inconvenience to the operation process, thereby providing a clamping device for medical instruments.

The invention provides a clamping device of a medical instrument, which comprises:

a clamp adapted to clamp a medical instrument;

the rocker arm is formed by sequentially connecting a plurality of connecting balls and a plurality of joints; two ends of the joint are provided with first arc concave surfaces which are suitable for being abutted with the connecting balls; the connecting ball and the joint are internally provided with through holes; a connecting rope penetrates through the connecting ball and the through hole of the joint; one end of the connecting rope is connected with the clamp, and the other end of the connecting rope is connected with the handle assembly;

the base is connected with the handle assembly through a rotating assembly; the base is suitable for being clamped on an operating table;

the clamp, the rocker arm and the base have a steerable adjusting state and also have a relatively fixed clamping state.

Preferably, the clamp and the rocker arm are connected through a connecting mechanism; the connecting mechanism includes:

one end of the spherical straight rod is connected with the clamp, and the other end of the spherical straight rod is connected with the rotating ball;

a housing having a first receiving cavity; one end of the accommodating cavity is rotatably wrapped with the rotating ball of the spherical straight rod;

the abutting pressure head is provided with an abutting surface which abuts against the rotating ball of the spherical straight rod; one end of the abutting pressure head is slidably arranged in the first accommodating cavity of the shell.

Preferably, the connection mechanism further comprises:

one end of the driving piece is connected with the shell, and the other end of the driving piece is connected with the connecting rope;

the other end of the first accommodating cavity of the shell is provided with a first annular concave edge; one end of the driving piece is provided with an extending end extending outwards; the extending end of the driving piece is clamped with the first annular concave edge;

the driving piece is connected with the abutting pressure head in a cross sliding mode and is matched with the abutting pressure head to form a second accommodating cavity.

Preferably, the connection mechanism further comprises:

one end of the traction rod is spherical, and the other end of the traction rod is connected with the connecting rope; the spherical end of the pulling rod is arranged in the second accommodating cavity in a sliding mode.

Preferably, the connecting ball is provided with two second arc-shaped concave surfaces oppositely; the second arc-shaped concave surface of the connecting ball is opposite to the first arc-shaped concave surface of the joint.

Preferably, the handle assembly comprises:

the handle body is internally provided with a third accommodating cavity; an internal thread is arranged in the third accommodating cavity;

the sliding block is movably arranged in the third accommodating cavity; the outer surface of the sliding block is provided with external threads; the external thread is matched and connected with the internal thread of the handle body; the sliding block is connected with the connecting rope.

Preferably, the handle assembly further comprises:

a threaded connector: is connected with the inner wall of the third containing cavity of the handle body; the internal thread is arranged inside the threaded connection.

Preferably, a rear connecting joint is arranged between the handle assembly and the rocker arm; the rotating assembly is arranged in the cavity of the rear connecting joint; the base is adapted to abut the posterior joint.

Preferably, the rotating assembly includes:

one end of the connecting lantern ring is rotatably connected with the base, and the other end of the connecting lantern ring is provided with an abutting hole; one end of the abutting hole is an inclined plane;

one end of the pushing block is connected with the handle body, and the other end of the pushing block is a connecting end with an inclined plane; the inclined plane in the abutting hole is matched and abutted with the inclined plane of the connecting end; a through cavity is arranged in the pushing block, and a connecting rope penetrates through the cavity; one end of the sliding block is arranged in the cavity in a sliding manner; the threaded connecting piece is abutted to the pushing block.

Preferably, a third annular flange is arranged on the sliding block; the third annular flange has a diameter greater than a diameter of the threaded connection.

Preferably, the base includes: the upper base and the lower base are connected with the upper base through a fastening knob; the upper end of the upper base is arc-shaped; the lower end of the rear connecting joint is provided with a third arc-shaped concave surface; the arc-shaped surface of the upper base is matched and abutted with the arc-shaped concave surface of the rear connecting joint.

The technical scheme of the invention has the following advantages:

1. the invention provides a clamping device of a medical instrument, comprising: the clamp, the rocker arm and the base; the device clamps medical instruments through clamps and clamps the medical instruments on an operating table through a base; because the rocker arm is formed by connecting the connecting ball and the joint, when the connecting rope is in a loose state, the connecting ball and the joint can rotate at will, the rocker arm can be adjusted to be in various directions, when the connecting rope is in a tensioned state, the inner surface and the outer surface of the connecting ball and the inner surface and the outer surface of the joint rub with each other, and the state of the rocker arm is locked by the friction force between the connecting ball and the joint and is in a clamping state; in the operation process, the clamping device can stably clamp the medical instrument, so that the burden of the hands of the medical staff is reduced; moreover, the medical instrument can be adjusted at any angle, the rotation is flexible, and medical care personnel can convey the medical instrument to a target position conveniently.

2. According to the clamping device of the medical instrument, the connecting mechanism can realize the rotary connection between the clamp and the rocker arm; simultaneously when the rocking arm is connected rope locking, connect the rope and can drive simultaneously clamp and rocking arm and be in fixed state for clamp and rocking arm are in the clamping state simultaneously.

3. According to the clamping device of the medical instrument, two second arc-shaped concave surfaces are oppositely arranged on the connecting ball; the connecting ball does not use the whole ball, but is provided with two second arc-shaped concave surfaces, so that the whole weight of the rocker arm can be reduced, the clamping is convenient, and the cost is reduced.

4. The invention provides a clamping device of a medical instrument, which comprises a handle assembly and a clamping device, wherein the handle assembly comprises: a handle body and a slider; through the twist grip body, thereby drive the slider through internal thread and external screw thread and remove to the rope removal is connected in the traction, thereby realizes clamp, rocking arm and base and changes between regulation state and clamping state.

5. The invention provides a clamping device of a medical instrument, wherein the rotating assembly comprises: connecting the lantern ring and the pushing block; the abutting hole of the connecting lantern ring and the connecting end of the pushing block are provided with inclined planes; the pushing block is driven to move through the handle body, so that the connecting lantern ring is driven to move up and down, the butt and the separation of the base and the rear connecting joint are realized, and the rotation and the fixation of the base and the handle assembly are realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a perspective view of a clamping device of a medical instrument according to the present invention.

Fig. 2 is a partially enlarged view of a portion a shown in fig. 1.

Fig. 3 is a perspective view of the clamp of fig. 1.

Fig. 4 is a front view of the anterior joint of fig. 1.

Fig. 5 is a sectional view B-B shown in fig. 4.

Fig. 6 is a front view of the attachment mechanism and anterior joint of fig. 1.

Fig. 7 is a cross-sectional view of C-C shown in fig. 6.

Fig. 8 is a schematic perspective view of the driving member of the present invention.

Fig. 9 is a schematic perspective view of the abutment ram of the present invention.

Fig. 10 is a perspective view of the engagement between the driver and the abutment ram according to the present invention.

Fig. 11 is a perspective view of the connection mechanism of the present invention.

Fig. 12 is a schematic perspective view of the housing of the present invention.

Figure 13 is a front view of the connecting ball and joint of the present invention.

Fig. 14 is a cross-sectional view of D-D shown in fig. 13.

Fig. 15 is a perspective view of the connecting ball of the present invention.

Fig. 16 is a perspective view of the joint of the present invention.

Fig. 17 is a perspective view of the base and handle assembly of the present invention.

FIG. 18 is a right side view of the base and handle assembly of the present invention.

Fig. 19 is a cross-sectional view of E-E shown in fig. 18.

Fig. 20 is a perspective view of the rotating assembly of the present invention.

Description of reference numerals:

1. clamping; 2. a rocker arm; 3. a base; 4. a medical device; 5. a fastener; 6. an upper clamp; 7. a lower clip; 8. an anterior joint; 9. a housing; 10. fastening a bolt; 11. a second annular recessed rim; 12. a fourth arc-shaped concave surface; 13. a spherical straight rod; 14. a driver; 15. an extension end; 16. abutting against a pressure head; 17. a first annular flange; 18. a pulling rod; 19. a first annular flange; 20. a first accommodating chamber; 21. a connecting ball; 22. a joint; 23. a second arc-shaped concave surface; 24. a first arcuate concave surface; 25. a second through hole; 26. a first through hole; 27. a posterior joint; 28. a handle body; 29. an upper base; 30. a lower base; 31. fastening a knob; 32. a third accommodating chamber; 33. a slider; 34. a pushing block; 35. a fourth accommodating chamber; 36. a threaded connection; 37. and connecting the lantern ring.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The medical instrument holding device provided by the embodiment, as shown in fig. 1, includes: the clamp 1, the rocker arm 2 and the base 3; the device clamps medical instruments 4 through a clamp 1 and clamps the medical instruments on an operating table through a base 3; because the rocker arm 2 is formed by connecting the connecting ball 21 and the joint, when the connecting rope is in a loose state, the connecting ball 21 and the joint can rotate freely, the rocker arm 2 can be adjusted to be in various directions, when the connecting rope is in a tensioning state, the inner surface and the outer surface of the connecting ball 21 and the inner surface and the outer surface of the joint rub with each other, and the state of the rocker arm 2 is locked by the friction force between the connecting ball 21 and the joint and is in a clamping state; in the operation process, the clamping device can stably clamp the medical instrument 4, so that the burden of the hands of the medical care personnel is reduced; moreover, the medical instrument 4 can be adjusted at any angle, and the rotation is flexible, so that medical workers can convey the medical instrument 4 to a target position conveniently.

As shown in fig. 2, the clamp 1 is connected with the rocker arm 2 through a connecting mechanism; the clip 1 is connected to the connecting mechanism by means of the fastening element 5, so that the clip 1 can be quickly replaced for different medical instruments 4.

As shown in fig. 3, the clamp 1 includes an upper clamp 6 and a lower clamp 7; the upper clamp 6 and the lower clamp 7 are fixed together through a fastening bolt 10; the shapes of the upper clamp 6 and the lower clamp 7 are adapted to the medical instrument, so that the upper clamp 6 and the lower clamp 7 can be designed differently according to the appearance of different medical instruments 4;

as shown in fig. 4 and 5, a front connecting joint 8 is arranged at the front end of the rocker arm 2, a through cavity is arranged in the front connecting joint 8, and a fourth arc-shaped concave surface 12 is arranged at one end in the cavity and is connected with a connecting ball 21 in a matching manner; the other end is provided with a second annular concave edge 11;

as shown in fig. 6 and 7, a driver 14 is slidably arranged in the front connecting joint 8, an abutting pressure head 16 is slidably arranged in a manner of intersecting with the driver 14, the driver 14 and the abutting pressure head 16 form a second accommodating cavity, and a traction rod 18 with a spherical end is slidably arranged in the second accommodating cavity;

as shown in fig. 8, the structure of the driving member 14 is shown, one end of the driving member 14 has a protruding end 15, and the other end is in a ring structure;

as shown in fig. 9, in the abutting ram 16 structure, one end of the abutting ram 16 has an abutting surface, and the other end of the abutting ram 16 has a first annular flange 17; the first annular flange 17 abuts against the second annular concave edge 11 of the anterior joint 8;

fig. 10 is a schematic structural view showing the mating connection of the driver 14 and the abutment ram 16; the abutting pressure head 16 and the driving piece 14 are arranged in a cross sliding mode; and the abutting pressure head 16 and the driving piece 14 are matched to form a second accommodating cavity;

a pulling rod 18 is arranged in the second accommodating cavity in a sliding mode, one end of the pulling rod 18 is spherical, and the other end of the pulling rod 18 is a straight rod; the spherical end of the traction rod 18 is slidably arranged in a second accommodating cavity formed by matching the abutting pressure head 16 and the driving piece 14, the traction rod is limited in the second accommodating cavity through an annular structure, and the straight rod end of the traction rod 18 extends out of the second accommodating cavity and is connected with the connecting rope;

the front end of the abutting surface of the abutting pressure head 16 is abutted with a spherical straight rod 13, one end of the spherical straight rod 13 is connected with a rotating ball, and the straight rod at the other end is connected with the clamp 1.

As shown in fig. 11, a shell 9 is sleeved on the outer surface of the rotating ball of the spherical straight rod 13;

as shown in fig. 12, a through first accommodating cavity 20 is formed in the housing 9, the rotating ball of the spherical straight rod 13 is rotatably disposed at one end of the first accommodating cavity 20, and a notch is formed in the housing 9 at the end, so that the adjustment range of the angle between the clamp 1 and the housing 9 is increased due to the opening of the notch; a first annular concave edge 19 is arranged at the other end of the first accommodating cavity 20, and the protruding end 15 of the driving piece 14 is clamped with the first annular concave edge 19; the first annular flange 17 of the first ram abuts against the outside of the first housing chamber 20 of the casing 9.

In the using process, the other end pulls the connecting rope, the connecting rope pulls the traction rod to move, the driving piece 14 is driven to move through the spherical end of the traction rod, and the driving piece 14 pulls the shell 9 to move, so that the inner wall of the shell 9 is abutted to the spherical end of the spherical straight rod 13; meanwhile, due to the action of the rear end rocker arm 2, the front connecting joint 8 moves to a certain position towards one end of the clamp 1, and the abutting pressure head 16 is pushed to move, so that the abutting surface of the abutting pressure head 16 is abutted with the spherical end of the spherical straight rod 13; under the action of the inner wall of the first accommodating cavity 20 of the shell 9 and the abutting surface of the abutting pressure head 16, the rotating ball of the spherical straight rod 13 cannot rotate, and the relative fixing of the angle of the clamp 1 and the angle of the rocker arm 2 is realized.

As shown in fig. 13 and 14, the rocker arm 2 is a part of the rocker arm 2, and the rocker arm 2 is formed by sequentially connecting a plurality of connecting balls 21 and a plurality of joints at intervals; a through hole is formed inside the connecting ball 21 and the joint, and a connecting rope is arranged in the through hole in a penetrating manner; one end of the connecting rope is connected with the clamp 1, and the other end of the connecting rope is connected with the handle assembly; the diameter of the rocker arm 2 decreases from one end of the base to one end of the clamp 1, so that as the diameter of the rocker arm 2 decreases, the size of each connecting ball 21 and joint also regularly decreases, but the internal structure is uniform.

As shown in fig. 15, is a perspective view of the connection ball 21; the opposite arrangement surface of the connecting ball 21 is provided with two second arc concave surfaces 23; the connecting ball 21 has a second through hole 25 therein;

as shown in fig. 16, is a perspective view of the joint 22; the two ends of the joint 22 are provided with first arc concave surfaces 24, and the diameters of the first arc concave surfaces 24 and the adjacent connecting balls 21 are matched; the connecting ball 21 rotates in the first arc concave surface 24; the joint 22 has a first through hole 26 therein.

The first through hole 26 and the second through hole 25 are correspondingly communicated; a connecting rope is arranged in the connecting device in a penetrating way; when the connecting rope is in a loose state, the surfaces of the connecting ball 21 and the joint are contacted with each other and the shapes are adapted, so that the rocker arm 2 formed by the connecting ball 21 and the joint can rotate along random directions; when the connection cord is tightened, the mutual compression of the connection ball 21 and the joint may provide sufficient friction to achieve immobilization of the rocker arm 2 to achieve locking of the medical device 4.

Further, the connecting ball 21 and the joint may be made of a high molecular polymer material or a metal such as stainless steel; and the contact surface of the connecting ball 21 and the joint is textured or otherwise treated to increase surface friction.

As shown in fig. 17, one end of the rocker arm 2 is connected with a rear connecting joint 27, a through cavity is arranged in the rear connecting joint 27, and a rotating assembly is arranged in the cavity; the other end of the rear connecting joint 27 is connected with a handle component;

as shown in fig. 18 and 19, a handle body 28 is provided at one end of the rear connection joint 27, and when the connection rope is in a loose state, a gap is provided between the rear connection joint 27 and the handle body 28; the handle body 28 is internally provided with a third accommodating cavity 32, the inner wall of the third accommodating cavity 32 is connected with a threaded connecting piece 36, and internal threads are arranged inside the threaded connecting piece 36; a sliding block 33 is connected with the internal thread of the internal thread connecting piece 36 through a thread, and the sliding block 33 is connected with a connecting rope;

one end of a pushing block 34 is fixedly connected to the end of the handle body 28, a through cavity is arranged in the pushing block 34, a fourth accommodating cavity 35 is arranged at one end of the cavity close to the handle, and one end of a sliding block 33 can extend into the fourth accommodating cavity 35 in a sliding manner; the side wall of the threaded connector 36 abuts against the end face of the push block 34; the other end of the pushing block 34 is arranged in an inclined plane;

as shown in fig. 20, a connecting collar 37 is sleeved on the upper of the pushing block 34, specifically, the connecting collar 37 has an abutting hole, and one end of the abutting hole has an upper matching with the upper of the pushing block 34;

the lower end of the connecting lantern ring 37 is rotatably connected with the base; the upper end of the base is provided with an arc-shaped surface which is connected with a third arc-shaped concave surface at the lower end of the rear connecting joint 27 in a matching way;

when the connecting rope needs to be tensioned, the handle body 28 is rotated to drive the threaded connecting piece 36 to move and rotate relative to the sliding block 33; since a certain gap exists between the handle body 28 and the rear joint 27, when the handle rotates, the handle body 28 moves toward the rear joint 27, and the sliding block 33 moves away from the rear joint 27; the movement of the sliding block 33 causes the connecting rope to be tensioned and the orientation of the clamp 1 of the rocker arm 2 to be fixed; and the removal of handle body 28 then drives and promotes piece 34 and remove, promotes the forward movement of piece 34 for connect lantern ring 37 and move upwards, drive base rebound, make between base and the back joint 27 butt, can not take place relative rotation again, thereby realize the relative fixation of the position of base.

The base comprises an upper base 29 and a lower base 30 connected with the upper base 29 through a fastening knob 31; the upper base 29 and the lower base 30 sandwich the operating table or other surface so that the entire clamping device is positioned.

Method of use and principles

The size of the clamp 1 is selected according to the size of the medical appliance 4, and the clamp is fixedly connected with the spherical straight rod 13 through the fastener 5; the clamping device is fixed on an operating table or other planes through clamping of the upper base 29 and the lower base 30;

the connecting rope belongs to a loose state, the medical apparatus 4 is adjusted to a proper angle, and after the angle is determined, the handle body 28 is rotated to tighten the connecting rope, so that the clamp 1, the rocker arm 2 and the base are fixed. The connecting rope plays a role in locking and connecting the components.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A clamping device for a medical instrument, comprising:

a clamp (1) adapted to clamp a medical instrument (4);

the rocker arm (2) is formed by sequentially connecting a plurality of connecting balls (21) and a plurality of joints; both ends of the joint are provided with first arc-shaped concave surfaces (24) which are suitable for being abutted with the connecting balls (21); the connecting ball (21) and the joint are provided with through holes inside; a connecting rope penetrates through the connecting ball (21) and the through hole of the joint; one end of the connecting rope is connected with the clamp (1), and the other end of the connecting rope is connected with the handle assembly;

the clamp (1), the rocker arm (2) and the base have a steerable adjusting state and a relatively fixed clamping state.

2. The clamping device of a medical instrument according to claim 1, characterized in that the clamp (1) and the rocker arm (2) are connected by a connecting mechanism; the connecting mechanism includes:

one end of the spherical straight rod (13) is connected with the clamp (1), and the other end of the spherical straight rod is connected with the rotating ball;

a housing (9) having a first accommodation chamber (20); one end of the accommodating cavity is rotatably wrapped with a rotating ball of the spherical straight rod (13);

an abutting pressure head (16) having an abutting surface abutting against the rotating ball of the spherical straight rod (13); one end of the abutting pressure head (16) is arranged in a first accommodating cavity (20) of the shell (9) in a sliding mode.

3. The medical instrument clamping device of claim 2, wherein the connection mechanism further comprises:

one end of the driving piece (14) is connected with the shell (9), and the other end of the driving piece is connected with the connecting rope;

the other end of the first containing cavity (20) of the shell (9) is provided with a first annular concave edge (19); one end of the driving piece (14) is provided with an extending end (15) which extends outwards; the extending end (15) of the driving piece (14) is clamped with the first annular concave edge (19);

the driving piece (14) and the abutting pressure head (16) are in cross sliding connection and are matched to form a second accommodating cavity.

4. The medical instrument clamping device of claim 3, wherein the connection mechanism further comprises:

one end of the pulling rod (18) is spherical, and the other end of the pulling rod is connected with the connecting rope; the spherical end of the pulling rod (18) is arranged in the second accommodating cavity in a sliding mode.

5. The clamping device of a medical instrument according to claim 1, characterized in that the connecting ball (21) is oppositely provided with two second arc-shaped concave surfaces (23); the second arc-shaped concave surface (23) of the connecting ball (21) is opposite to the first arc-shaped concave surface (24) of the joint.

6. The medical instrument clamping device of claim 1, wherein the handle assembly comprises:

a handle body (28) having a third accommodating chamber (32) therein; an internal thread is arranged in the third accommodating cavity (32);

a sliding block (33) movably arranged in the third accommodating cavity (32); the outer surface of the sliding block (33) is provided with external threads; the external thread is matched and connected with the internal thread of the handle body (28); the sliding block (33) is connected with the connecting rope.

7. The medical instrument clamping device of claim 6, wherein the handle assembly further comprises:

threaded connection (36): is connected with the inner wall of a third accommodating cavity (32) of the handle body (28); the internal thread is arranged inside the threaded connection (36).

8. The clamping device of a medical instrument according to claim 7, characterized in that a rear connection joint (27) is provided between the handle assembly and the rocker arm (2); the rotating assembly is arranged in the cavity of the rear connecting joint (27); the base is adapted to abut the posterior connection joint (27).

9. The medical instrument clamping device of claim 8, wherein the rotation assembly comprises:

one end of the connecting lantern ring (37) is rotatably connected with the base, and the other end of the connecting lantern ring is provided with an abutting hole; one end of the abutting hole is an inclined plane;

one end of the pushing block (34) is connected with the handle body (28), and the other end of the pushing block is a connecting end with an inclined plane; the inclined plane in the abutting hole is matched and abutted with the inclined plane of the connecting end; a through cavity is arranged in the pushing block (34), and a connecting rope penetrates through the cavity; one end of the sliding block (33) is arranged in the cavity in a sliding manner; the threaded connection (36) abuts the push block (34).

10. The clamping device of a medical instrument according to claim 9, wherein a third annular flange is provided on the sliding block (33); the third annular flange has a diameter greater than the diameter of the threaded connection (36).