CN118806381A - Surgical tool - Google Patents

Abstract

The specification discloses a surgical tool, and surgical tool includes intermediate lever, hollow tube and a plurality of binding clip and a plurality of connecting rod, and the intermediate lever is disposed in the hollow tube, and the intermediate lever end passes through the connecting rod with each binding clip to be linked to each other, and each binding clip articulates with the end of hollow tube respectively. The middle rod moves in the hollow pipe to drive the connecting rod to extend or retract the hollow pipe, and the connecting rod opens each clamp head when extending out of the tail end of the hollow pipe, or drives each clamp head to clamp the appointed object when retracting out of the tail end of the hollow pipe. It can be seen that by arranging a plurality of forceps heads at the end of the hollow tube, a larger forceps range can be achieved, the forceps force is increased, the tissue to be removed can be effectively gripped even in a minimally invasive surgery scene with limited working channels, and the risk of slipping is reduced.

Description

Surgical tool

Technical Field

The present specification relates to the field of medical technology, and in particular to a surgical tool.

Background

With the development of minimally invasive surgical techniques, the requirements for minimally invasive and precise surgical operations are increasing. Among them, the jaw tool is one of medical tools commonly used in endoscopic minimally invasive surgery. The jaw tool may be used to grasp tissue to be removed. In the operation process, an operator can perform opening and closing actions through controlling the forceps heads at the tail ends of the forceps tools so as to achieve the purpose of clamping.

Currently, the jaw tool is usually operated by two jaws at the distal end to perform an up-and-down bite, thereby effectively clamping the tissue to be removed.

However, the above-mentioned jaw tool capable of performing only up-down occlusion has a problem of small jaw force, and may cause slippage of the clamped tissue due to insufficient jaw force during the process of clamping, thereby increasing the operation time and the probability of damage to the tissue in the non-operation area.

Disclosure of Invention

The present specification provides a surgical tool to partially solve the above-mentioned problems of the prior art.

The technical scheme adopted in the specification is as follows:

The present specification provides a surgical tool comprising: a middle rod 1, a hollow tube 2, a plurality of clamp heads 3 and a plurality of connecting rods 4; the middle rod 1 is arranged in the hollow tube 2, and the tail end of the middle rod 1 is connected with each clamp head 3 through a connecting rod 4; each clamp head 3 is hinged with the tail end of the hollow tube 2; wherein:

the middle rod 1 is used for moving in the hollow tube 2 to drive the connecting rod 4 to extend out of the hollow tube 2 or retract the hollow tube 2;

the connecting rod 4 is used for opening the clamp heads 3 when the tail end of the hollow tube 2 is extended, or driving the clamp heads 3 to clamp the appointed object when the tail end of the hollow tube 2 is retracted.

Optionally, the tail end of the intermediate rod 1 is fixedly connected with the head end of the connecting rod 4 at a preset angle.

Optionally, the end of the connecting rod 4 is connected with a sliding block 6 in a sliding groove 31 on the inner side of each clamp head 3;

The sliding block 6 is used for sliding in the sliding groove 31;

The middle rod 1 is configured to move in the hollow tube 2 to drive the connecting rod 4 to move, so that each sliding block 6 connected with the connecting rod 4 slides on the sliding groove 31 inside each clamp head 3, so that each clamp head 3 is opened.

Optionally, the tail end of the middle rod 1 is hinged with the head end of the connecting rod 4, and the tail end of the connecting rod 4 is connected with a first limiting point 8 fixed on the inner side of each clamp head 3.

Optionally, a plurality of first limiting points 8 are fixed on the inner side of the clamp head 3 along the radial direction; wherein, the lengths of the first limiting points 8 from the head end of the clamp head 3 are different; the length of the different first limiting points 8 from the head end of the binding clip 3 corresponds to the different opening angles of the binding clip 3.

Optionally, the end of the hollow tube 2 further comprises a mounting base 5;

The head end of the clamp head 3 is provided with a clamping tenon 32, and the clamp head 3 is hinged with the mounting base 5 through the clamping tenon 32.

Optionally, a first handle 11 is configured at the head end of the intermediate rod 1;

The surgical tool further comprises elastic means 7, said elastic means 7 being deployed between said first handle 11 and said hollow tube 2;

said elastic means 7 for compressing when the end of said intermediate rod 1 protrudes beyond the end of said hollow tube 2; when the end of the intermediate rod 1 is retracted to the hollow tube 2, it is extended.

Optionally, the hollow tube 2 is provided with a second handle 21;

The elastic device 7 comprises an elastic piece, a first end of the elastic piece is connected with the first handle 11, and a second end of the elastic piece is connected with the second handle 21.

Optionally, a second limiting point 22 is arranged in the hollow tube 2;

the elastic means 7 comprise a spring, through which the intermediate lever 1 passes, which is arranged between the first handle 11 and the second limit point 22.

Optionally, the elastic means 7 comprise a spring; wherein the inner diameter of the hollow tube 2 is smaller than the diameter of the ring body of the spring; the intermediate rod 1 passes through the spring, which is disposed between the first handle 11 and the head end of the hollow tube 2.

The above-mentioned at least one technical scheme that this specification adopted can reach following beneficial effect:

In the surgical tool provided by the specification, the surgical tool comprises a middle rod, a hollow pipe, a plurality of binding clips and a plurality of connecting rods, wherein the middle rod is deployed in the hollow pipe, the tail end of the middle rod is connected with each binding clip through the connecting rods, and each binding clip is hinged with the tail end of the hollow pipe respectively. The middle rod moves in the hollow pipe to drive the connecting rod to extend or retract the hollow pipe, and the connecting rod opens each clamp head when extending out of the tail end of the hollow pipe, or drives each clamp head to clamp the appointed object when retracting out of the tail end of the hollow pipe. It can be seen that by arranging a plurality of forceps heads at the end of the hollow tube, a larger forceps range can be achieved, the forceps force is increased, the tissue to be removed can be effectively gripped even in a minimally invasive surgery scene with limited working channels, and the risk of slipping is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the specification, illustrate and explain the exemplary embodiments of the present specification and their description, are not intended to limit the specification unduly. In the drawings:

FIG. 1 is a schematic illustration of a surgical tool of the present disclosure;

FIG. 2A is a schematic illustration of a surgical tool of the present disclosure;

FIG. 2B is a schematic illustration of a surgical tool of the present disclosure;

FIG. 3A is a schematic illustration of a surgical tool of the present disclosure;

FIG. 3B is a schematic illustration of a surgical tool of the present disclosure;

FIG. 4 is a schematic illustration of a surgical tool of the present disclosure;

FIG. 5A is a schematic illustration of a surgical tool of the present disclosure;

FIG. 5B is a schematic illustration of a surgical tool of the present disclosure;

Fig. 5C is a schematic view of a surgical tool of the present disclosure.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the present specification more apparent, the technical solutions of the present specification will be clearly and completely described below with reference to specific embodiments of the present specification and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present specification. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are intended to be within the scope of the present disclosure.

In addition, it should be noted that, all actions of acquiring signals, information or data are performed under the condition of conforming to the corresponding data protection rule policy of the country of the location and obtaining the authorization given by the owner of the corresponding device.

Currently, surgical operations such as orthopaedics, nerves, intervention and the like can be realized by a minimally invasive surgery mode. The minimally invasive and accurate surgical operation requirements are higher and higher, the minimally invasive surgical operation needs to be realized as much as possible, the minimally invasive surgical operation needs to accurately reach the diseased part for effective treatment, and the minimally invasive surgical operation is used as an early minimally invasive surgical operation, so that the minimally invasive surgical operation has small damage to the paraspinal muscles, can keep the complete spinal structure to the greatest extent, maintains the stability after the surgical operation, and has the advantages of small trauma, less bleeding, quick recovery, fewer complications, definite curative effect and the like.

Currently, surgical operations performed by using minimally invasive surgical equipment to assist an operator (such as a doctor) are widely applied in the field of minimally invasive surgery of a spinal endoscope, and two main surgical modes are commonly used minimally invasive of the spinal endoscope, namely, an intervertebral foraminiferous surgery (Percutaneous Endoscopic Lumbar Discectomy, PELD) and a single-side double-channel endoscopic technique (Unilateral Biportal Endoscopy, UBE), which can be performed by using the minimally invasive surgical equipment. In a minimally invasive surgical operation of a spinal column, a jaw apparatus is one of medical instruments commonly used in the operation of the spinal column, and the minimally invasive surgical operation of the endoscope using the jaw apparatus is generally operated under an endoscope, and the jaw apparatus is mainly used for clamping tissues between the spinal column and the spinal column. The clamping device is generally composed of a head, a rod and a handle, wherein the head is a pair of forceps heads with forceps beaks, and the head is transmitted and controlled to work through the handle operation. The head can be made of any existing instrument material suitable for endoscopic minimally invasive surgery, such as stainless steel materials.

However, in the conventional endoscopic minimally invasive surgery, especially in the surgery such as the discectomy, due to the narrow operation space under the endoscope, the tissue to be removed is clamped by only one pair of forceps heads, and the slipping caused by insufficient clamping force may occur. Further, the range of tissue that can be gripped by the pair of jaws is limited, and the operator needs to repeatedly perform the gripping operation. Both of the above problems may increase the surgical time and the probability of tissue damage in the non-surgical area.

Based on this, this specification provides a surgical tool, through the relative motion between hollow tube that disposes at least three binding clip and the intermediate lever, drive the slider and remove on the spout of binding clip inboard for the opening and shutting of binding clip, with the tissue that the clamp needs to carry out the operation, through arranging a plurality of binding clips at the hollow tube end, can realize bigger clamp range, and increase the clamping force, even can also clamp the tissue that needs to pick up effectively in the limited minimally invasive surgery scene of working channel, reduce the risk of slippage.

The following describes in detail the technical solutions provided by the embodiments of the present specification with reference to the accompanying drawings.

Fig. 1 is a schematic view of a surgical tool of the present disclosure.

The surgical tools provided herein may be used to endoscopically clamp tissue in need of a surgical procedure for further surgical procedures. The surgical tool can be used in any existing minimally invasive surgical scene, can be manually controlled by an operator, and can also be configured on a surgical robot to realize automatic control, and the specification is not limited to the method.

The surgical tool provided in the present specification includes a middle rod 1, a hollow tube 2, a plurality of forceps heads 3 and a plurality of connecting rods 4, where the number of forceps heads 3 may be three, or of course, three or more forceps heads 3 may be installed at the end of the hollow tube 2 in the embodiment of the present specification, so as to increase the range of tissue clamped by the forceps heads 3 and the clamping force, and in practical application, the number of forceps heads 3 may be determined according to a specific application scenario, which is not limited in the present specification. Generally, the end of the binding clip 3 has no teeth or micro teeth, and the number and the density of the teeth can determine the contact area between the binding clip 3 and the object, so as to determine the clamping force of the binding clip 3, and the end of the binding clip 3 shown in fig. 1 is toothless, which is only an example, and does not represent that the binding clip 3 included in the surgical tool in the embodiment of the present disclosure is toothless only. In the present embodiment, the number and density of teeth of the binding clip 3 may be set in advance according to the use scene of the surgical tool, which is not limited in this specification.

The middle rod 1 is arranged in the hollow tube 2, the middle rod 1 is a solid rod with two ends capable of being provided with other hardware structures, and a working channel established by the hollow tube 2 can accommodate relative movement between the middle rod 1 and the hollow tube 2; each clamp head 3 is provided with the tail end of the hollow tube 2 and is hinged with the tail end of the hollow tube 2; the end of the intermediate rod 1 is connected to each binding clip 3 by a connecting rod 4, wherein the connection of the intermediate rod 1 to the connecting rod 4 is normally within the hollow tube 2 when the surgical tool provided in the present description is in a closed state. Based on the above structure, when each clamp head 3 is in a closed state (as shown in fig. 2A), the intermediate rod 1 moves in the hollow tube 2 toward the end direction of the hollow tube 2, the intermediate rod 1 drives the connecting rod 4 to displace in the hollow tube 2, so that the connecting rod 4 extends out of the hollow tube 2, and meanwhile, thrust is applied to each clamp head 3 connected with the end of the connecting rod 4, so that each clamp head 3 is subjected to thrust of expanding outwards, and the clamp heads 3 are opened and are in an opened state as shown in fig. 2B. When the intermediate rod 1 moves in the hollow tube 2 toward the head end of the hollow tube 2, the connecting rod 4 connected to the end of the intermediate rod 1 is driven to retract the hollow tube 2, so that the jaws 3 in the opened state are retracted inwardly.

Therefore, in the operation scene based on the operation tool, an operator can control the operation tool to enter the diseased part of the patient, control the middle rod 1 contained in the operation tool to move in the hollow tube 2, drive the connecting rod 4 to extend out of the tail end of the hollow tube 2, open the clamp heads 3 and aim at the appointed object needing operation at the diseased part. Further, the intermediate rod 1 is controlled to move in the hollow tube 2 for the second time, the connecting rod 4 is driven to retract into the hollow tube 2, the connecting rod 4 is retracted into the tail end of the hollow tube 2, so that the forceps heads 3 are closed, and at the moment, the closed forceps heads 3 can clamp the appointed object so as to facilitate the follow-up operation on the appointed object, such as removal.

In one or more embodiments of the present disclosure, in order to enable the hollow tube 2 to move to switch between opening and closing by the connecting rod 4, the connection relationship between the hollow tube 2 and the connecting rod 4, and the connection relationship between the connecting rod 4 and each of the clamp heads 3 may be divided into the following two cases:

First case: the tail end of the middle rod 1 is fixedly connected with the head end of the connecting rod 4, and the tail end of the connecting rod 4 is connected with the sliding block 6 in the sliding groove 31 on the inner side of each clamp head 3.

Second case: the end of the intermediate lever 1 is hinged to the head end of the connecting lever 4, and the end of the connecting lever 4 is connected to a first limiting point 8 inside each binding clip 3.

For the first case, the end of the intermediate rod 1 may be fixedly connected with the head end of the connecting rod 4 at a preset angle, as shown in fig. 3A, which is a schematic view of the connecting rod 4 extending out of the hollow tube 2, as shown in fig. 3B, which is a schematic view of the connecting rod 4 retracting back into the hollow tube 2, where the preset angle may be determined according to the angle of abduction of each clamp head 3 when opened, such as 90 °, and in addition, the manner of fixedly connecting the end of the intermediate rod 1 with the head end of the connecting rod 4 may be an existing rigid connection manner such as welding, and the specific form of the fixed connection is not limited in this specification. Since the end of the intermediate lever 1 is fixedly connected to the head end of the connecting lever 4, in order to enable the movement of the connecting lever 4 to drive the respective binding clip 3 to be extended and retracted outwardly, a sliding slot 31 is provided inside the respective binding clip 3, and a slide 6 is provided in the sliding slot 31, as shown in fig. 4, which is a sectional view of the sliding slot 31 and the slide 6, such that the slide 6 can move in the radial direction of the binding clip 3 in the sliding slot 31. The end of the connecting rod 4 is connected with the slide block 6, so that the slide block 6 is driven to move in the sliding groove 31 when the connecting rod 4 moves. The length of the chute 31 may be predetermined according to the angle of the abduction of each of the binding clip 3 when opened, which is not limited in this specification. In an alternative embodiment of the present description, the reason for the opening of the jaws 3 is that the jaws 3 are subjected to a flared pushing force, which is exerted by the slider 6 on the jaws 3 when the slider 6 is displaced on the chute 31 in the direction of the distal end of the jaws 3. Therefore, the opening angle of the binding clip 3 is positively correlated with the distance that the sliding block 6 can move on the sliding groove 31, thus, alternatively, a plurality of sliding grooves 31 can be arranged on one binding clip 3, each sliding groove 31 is connected end to end, one sliding block 6 is arranged in each sliding groove 31, the distance between the sliding grooves 31 can be different, thus, an operator can adjust the abduction angle of each binding clip 3 when opening by adjusting the sliding block 6 connected with the tail end of the connecting rod 4 before operation, and further adjust the range and the clamping force of each binding clip 3.

In the second case, the end of the intermediate lever 1 may be hinged to the head end of the connecting lever 4, that is, the connecting lever 4 may swing around the head end of the connecting lever 4, and the specific hinged travel is not limited in this specification. Since the end of the intermediate lever 1 is hinged to the head end of the connecting lever 4, in order to allow the movement of the connecting lever 4 to bring the jaws 3 to spread outwards and retract inwards, a first limit point 8 may be fixed inside the jaws 3 and the end of the connecting lever 4 may be connected to the first limit point 8, i.e. the end of the connecting lever 4 is fixed inside the jaws 3. Alternatively, there may be a plurality of first limiting points 8 fixed inside the binding clip 3, and each first limiting point 8 is fixed radially inside the binding clip 3. The lengths of the different first limiting points 8 from the head ends of the binding heads 3 where the first limiting points 8 are located are different, so that the lengths of the different first limiting points 8 from the head ends of the binding heads 3 correspond to different opening angles of the binding heads 3, and an operator can adjust the abduction angle of each binding head 3 after opening by adjusting the first point connected with the tail end of the connecting rod 4 before operation, and further adjust the range in which each binding head 3 can be clamped and the clamping force.

In one or more embodiments of the present disclosure, the end of the hollow tube 2 further includes a mounting base 5, where at least three mounting positions may be configured on the mounting base 5, and one clamp head 3 may be mounted on each mounting position. In order to enable the binding clip 3 to be mounted on the mounting base 5 and enable the binding clip 3 to be rotatably connected with the mounting base 5, the head end of the binding clip 3 is provided with a latch 32, and the head end of the binding clip 3 can be hinged on the mounting base 5 through the latch 32, so that the binding clip 3 can rotate around the head end (the connection part of the latch 32 and the mounting base 5) thereof, wherein the angle of rotation of the binding clip 3 around the head end thereof corresponds to the abduction angle of the binding clip 3 or the opening angle of the binding clip 3 in one or more embodiments of the present specification.

In an alternative embodiment of the present disclosure, in order to switch the jaws 3 between open and closed by controlling the movement of the intermediate rod 1 within the hollow tube 2, it is possible to use elastic means 7 between the intermediate rod 1 and the hollow tube 2, as shown in fig. 5A, to limit the distance of relative movement between the intermediate rod 1 and the hollow tube 2, and thus limit the opening angle of the jaws 3 disposed at the end of the hollow tube 2.

Specifically, the first handle 11 is disposed at the head end of the intermediate rod 1, the elastic means 7 is disposed between the first handle 11 and the hollow tube 2, and the elastic means 7 is compressed when the end of the intermediate rod 1 is extended out of the end of the hollow tube 2 and is extended when the end of the intermediate rod 1 is retracted into the hollow tube 2.

The elastic device 7 may be a spring plate, a spring, or any conventional elastic deformation device, which is not limited in this specification.

In an alternative embodiment of the present disclosure, as shown in fig. 5B, the elastic device 7 includes a spring, and the hollow tube 2 is provided with a second handle 21, and a first end of the spring is connected to the first handle 11, and a second end of the spring is connected to the second handle 21. When the intermediate rod 1 moves toward the end of the hollow tube 2, the first handle 11 also moves toward the end of the hollow tube 2, and at this time, the elastic piece is compressed to limit the distance that the intermediate rod 1 moves toward the end of the hollow tube 2, thereby limiting the opening angle of each clamp head 3. Correspondingly, when the intermediate rod 1 moves towards the head end of the hollow tube 2, the first handle 11 also moves towards the head end of the hollow tube 2, and at this time, the elastic sheet stretches.

The above embodiment is an embodiment in which the middle rod 1 moves to drive the clamp heads 3 to open, and of course, the middle rod may also be in a form in which the hollow tube 2 moves. Optionally, when the hollow tube 2 moves toward the head end of the intermediate rod 1, the second handle 21 also wants to move toward the head end of the intermediate rod 1, and at this time, the elastic sheet is compressed to limit the distance that the hollow tube 2 moves toward the head end of the intermediate rod 1, so as to limit the opening angle of each clamp head 3. Accordingly, when the hollow tube 2 moves toward the end of the intermediate rod 1, the second handle 21 also moves toward the end of the intermediate rod 1, so that the elastic sheet stretches.

In an alternative embodiment of the present description, the elastic means 7 comprise a spring, which, due to its hollow mechanical structure, can determine the deployment position of the spring at the head end of the hollow tube 2 from the relationship between the diameter of the ring of the spring and the outer/inner diameter of the tube body of the hollow tube 2. In particular, the deployment position of the spring may be in particular deployed inside the hollow tube 2, at the head end of the hollow tube 2, and outside the hollow tube 2.

For the case where the spring is deployed inside the hollow tube 2: as shown in fig. 5C, a second limiting point 22 is disposed in the hollow tube 2, the intermediate rod 1 passes through the spring, and the spring is disposed between the first handle 11 and the second limiting point 22. When the distance between the first handle 11 and the second limit point 22 is shortened, the spring is compressed, so that the opening angle of each clamp head 3 is limited; as the distance between the first handle 11 and the second limit point 22 increases, the spring expands until it returns to its original shape. The shortening and increasing of the distance between the first handle 11 and the second limiting point 22 are related to the relative displacement between the intermediate rod 1 and the hollow tube 2, and the relative displacement between the intermediate rod 1 and the hollow tube 2 is similar to the relative displacement between the intermediate rod 1 and the hollow tube 2 when the elastic device 7 is a spring sheet, and will not be repeated herein.

For the case where the spring is deployed at the head end of the hollow tube 2: when the diameter of the ring body of the spring is larger than the inner diameter of the tube body of the hollow tube 2 and smaller than the outer diameter of the tube body of the hollow tube 2, one end of the spring can be connected with the head end of the hollow tube 2, the middle rod 1 penetrates through the spring, the other end of the spring is connected with the first handle 11, and the deployment position of the spring is between the first handle 11 and the head end of the hollow tube 2. When the distance between the first handle 11 and the head end of the hollow tube 2 is shortened, the spring is compressed, and the opening angle of each clamp head 3 is limited; when the distance between the first handle 11 and the head end of the hollow tube 2 increases, the spring expands until it returns to its original shape. The shortening and increasing of the distance between the first handle 11 and the head end of the hollow tube 2 are related to the relative displacement between the intermediate rod 1 and the hollow tube 2, and the relative displacement between the intermediate rod 1 and the hollow tube 2 is similar to the relative displacement between the intermediate rod 1 and the hollow tube 2 when the elastic device 7 is a spring sheet, which is not described herein again.

For the case where the spring is deployed outside the hollow tube 2: the second handle 21 is arranged outside the hollow tube 2, the intermediate rod 1 is arranged in the hollow tube 2, the hollow tube 2 and the intermediate rod 1 integrally pass through a spring, and the spring is arranged between the first handle 11 and the second handle 21. When the distance between the first handle 11 and the second handle 21 is shortened, the spring is compressed, limiting the angle at which each of the binding clip 3 opens; as the distance between the first handle 11 and the second handle 21 increases, the spring expands until it returns to its original shape. The shortening and increasing of the distance between the first handle 11 and the second handle 21 are related to the relative displacement between the intermediate rod 1 and the hollow tube 2, and the relative displacement between the intermediate rod 1 and the hollow tube 2 is similar to the relative displacement between the intermediate rod 1 and the hollow tube 2 when the elastic device 7 is a spring sheet, which is not described herein.

In one or more of the above embodiments, since the elastic deformation of the elastic means 7 has a limit, that is, the elastic means 7 cannot continue to compress when compressed to the limit, the elastic means 7 provided between the handle and the limit point can limit the distance of the relative movement between the intermediate rod 1 and the hollow tube 2, and since the distance of the relative movement between the intermediate rod 1 and the hollow tube 2 has a positive correlation with the opening angle of each of the jaws 3, the spring means can limit the opening angle of each of the jaws 3, and it can be seen that the limit of the elastic deformation of the elastic means 7 has a positive correlation with the opening angle of the jaws 3.

In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.

The foregoing is merely exemplary of the present disclosure and is not intended to limit the disclosure. Various modifications and alterations to this specification will become apparent to those skilled in the art. Any modifications, equivalent substitutions, improvements, or the like, which are within the spirit and principles of the present description, are intended to be included within the scope of the claims of the present description.

Claims (10)

1. A surgical tool, the surgical tool comprising: a middle rod (1), a hollow tube (2), a plurality of clamp heads (3) and a plurality of connecting rods (4); the middle rod (1) is arranged in the hollow tube (2), and the tail end of the middle rod (1) is connected with each clamp head (3) through a connecting rod (4); each clamp head (3) is hinged with the tail end of the hollow tube (2); wherein:

the middle rod (1) is used for moving in the hollow tube (2) to drive the connecting rod (4) to extend out of the hollow tube (2) or retract the hollow tube (2);

The connecting rod (4) is used for opening each clamp head (3) when the tail end of the hollow tube (2) is extended, or driving each clamp head (3) to clamp a specified object when the tail end of the hollow tube (2) is retracted.

2. Surgical tool according to claim 1, characterized in that the end of the intermediate rod (1) is fixedly connected to the head end of the connecting rod (4) at a predetermined angle.

3. Surgical tool according to claim 2, characterized in that the end of the connecting rod (4) is connected to a slide (6) in the inner slide groove (31) of each jaw (3);

The sliding block (6) is used for sliding in the sliding groove (31);

The middle rod (1) is used for moving in the hollow tube (2) and driving the connecting rod (4) to move, so that all sliding blocks (6) connected with the connecting rod (4) slide on sliding grooves (31) on the inner sides of all the clamp heads (3) respectively, and all the clamp heads (3) are opened.

4. Surgical tool according to claim 1, characterized in that the end of the intermediate lever (1) is hinged to the head end of the connecting lever (4), the end of the connecting lever (4) being connected to a first limiting point (8) fixed inside the respective binding clip (3).

5. Surgical tool according to claim 4, characterized in that the inner side of the binding clip (3) is radially fixed with a plurality of first limiting points (8); wherein, the lengths of the first limiting points (8) from the head end of the clamp head (3) are different; the length of the different first limiting points (8) from the head end of the binding clip (3) corresponds to the different opening angles of the binding clips (3).

6. Surgical tool according to claim 1, characterized in that the end of the hollow tube (2) further comprises a mounting base (5);

the clamp head (3) is provided with a clamping tenon (32) at the head end, and the clamp head (3) is hinged with the mounting base (5) through the clamping tenon (32).

7. Surgical tool according to claim 1, characterized in that the intermediate lever (1) is provided with a first handle (11) at its head end;

The surgical tool further comprises an elastic means (7), said elastic means (7) being deployed between said first handle (11) and said hollow tube (2);

-said elastic means (7) for compressing when the end of said intermediate rod (1) protrudes beyond the end of said hollow tube (2); when the end of the intermediate rod (1) is retracted to the hollow tube (2) is extended.

8. Surgical tool according to claim 7, characterized in that the hollow tube (2) is provided with a second handle (21);

The elastic device (7) comprises an elastic sheet, a first end of the elastic sheet is connected with the first handle (11), and a second end of the elastic sheet is connected with the second handle (21).

9. Surgical tool according to claim 7, characterized in that a second limiting point (22) is arranged inside the hollow tube (2);

the elastic means (7) comprise a spring, through which the intermediate rod (1) passes, said spring being arranged between the first handle (11) and the second limit point (22).

10. Surgical tool according to claim 7, characterized in that the elastic means (7) comprise a spring; wherein the inner diameter of the tube body of the hollow tube (2) is smaller than the diameter of the ring body of the spring; the intermediate rod (1) passes through the spring, and the spring is arranged between the first handle (11) and the head end of the hollow tube (2).