CN211381985U

CN211381985U - Tweezers

Info

Publication number: CN211381985U
Application number: CN201921926481.3U
Authority: CN
Inventors: 郇沛沛; 解江冰
Original assignee: Eyebright Suzhou Medical Apparatus And Instruments Co ltd
Current assignee: Eyebright Suzhou Medical Apparatus And Instruments Co ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-09-01
Anticipated expiration: 2029-11-08

Abstract

The utility model provides a pair of tweezers. The forceps comprise: the first ends of the two forceps arms are close to each other and connected to form a connecting end, and the second ends of the two forceps arms are oppositely arranged and can move relative to the connecting end; the two clamping parts are arranged corresponding to the two forceps arms, and when external force acts on the forceps arms, a clamping space for clamping a crystal is formed between the two clamping parts; and the positioning part is arranged on the inner side surface of the at least one clamping part and used for positioning the crystal. The technical scheme of the utility model solved because tweezers centre gripping lead to the optical part surface by the problem of fish tail to the optical part of crystal.

Description

Tweezers

Technical Field

The utility model relates to an intraocular lens implants the field, particularly, relates to a tweezers.

Background

Currently, lens forceps are a common instrument used in the field of ophthalmic intraocular lenses, and in particular in the field of intraocular lens implantation. The tweezers of the prior art do not have positioning parts, and when the crystal is pre-loaded or transported, any part of the crystal is randomly clamped, and the crystal can be clamped to the optical part of the crystal, so that the surface of the optical part of the crystal is scratched, and the quality of the crystal is affected.

That is, the above forceps have a problem that the surface of the optical portion is scratched due to easy grasping to the optical portion of the crystal when the crystal is randomly grasped.

Disclosure of Invention

The main object of the utility model is to provide a tweezers to solve because tweezers centre gripping leads to the optical part surface by the problem of fish tail to the optical part of crystal.

In order to achieve the above object, the utility model provides a tweezers, tweezers include: the first ends of the two forceps arms are close to each other and connected to form a connecting end, and the second ends of the two forceps arms are oppositely arranged and can move relative to the connecting end; the two clamping parts are arranged corresponding to the two forceps arms, and when external force acts on the forceps arms, a clamping space for clamping a crystal is formed between the two clamping parts; and the positioning part is arranged on the inner side surface of the at least one clamping part and used for positioning the crystal.

Furthermore, the second ends of the two forceps arms are provided with a positioning part.

Further, the positioning part is a step surface arranged on the inner side surface of the clamping part.

Further, the surface shape of the step surface is matched with the outer peripheral surface of the optical part of the crystal.

Further, the step surface is an arc surface or a plane.

Further, the inner side of the clamping part is provided with a first side surface and a second side surface, wherein the second side surface is arranged close to the connecting end, the first side surface is arranged far away from the connecting end, a step surface is formed between the first side surface and the second side surface, and the first side surface forms a part of the clamping space.

Further, a vertical distance d between the step surface and the outer edge of the first side surface satisfies the following formula: d is less than or equal to 0.2r, wherein r is the radius of the crystal.

Furthermore, the distance d between the step surface and the outer edge of the first side surface is within a range that d is more than or equal to 0.2mm and less than or equal to 0.8 mm.

Furthermore, the first side surface is an inclined surface, and the distance between the plane where the first side surface is located and the plane where the second side surface is located is gradually reduced along the direction away from the connecting end; or an included angle alpha is formed between the first side face and the end face, far away from the connecting end, of the first body of the clamping portion, wherein the included angle alpha is larger than or equal to 80 degrees and smaller than or equal to 90 degrees.

Further, tweezers still include the groove of dodging that sets up on the clamping part, and dodge the groove setting and keep away from the one side of link in the clamping part.

Furthermore, the avoiding groove is a V-shaped groove or an arc-shaped groove or a U-shaped groove.

Furthermore, a plurality of through holes are formed in at least one forceps arm and are arranged at intervals along the length direction of the forceps arm; or the outer side surface of at least one forceps arm is provided with an anti-slip part.

Furthermore, the inner side surface of at least one forceps arm is provided with a buffer column.

Use the technical scheme of the utility model, when external force acts on the tweezers arm, two clamping parts press from both sides the crystal tightly (the crystal is located the centre gripping space that two clamping parts formed promptly), and simultaneously, the free end that location portion can inject the clamping part stretches out to the position at crystal center for the centre gripping space that forms between two clamping parts is located outside the region at the optical part place of crystal. Therefore, when the crystal is randomly clamped by the tweezers, the tweezers cannot clamp the optical part of the crystal due to the limiting effect of the positioning part, and the positioning part can prevent the crystal from moving in the clamping space, so that the surface of the optical part of the crystal can be prevented from being scratched, and the quality of the crystal implanted into eyes is ensured.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

figure 1 shows a schematic structural view of an embodiment of tweezers according to the invention;

figure 2 shows an enlarged view of the forceps of figure 1 at E;

figure 3 shows an F-view of the forceps of figure 1;

FIG. 4 shows a schematic view of the configuration of the forceps of FIG. 1 in cooperation with a crystal (the crystal is placed on one of the jaws of the forceps and in an unclamped state);

FIG. 5 shows an enlarged view of the forceps of FIG. 4 at G (where the crystal is placed on one of the jaws of the forceps, in an undamped condition);

FIG. 6 shows a schematic view of the configuration of the forceps of FIG. 5 mated to the crystal (wherein the crystal is in a state of being grasped by the forceps); and

figure 7 shows a schematic view of another configuration of the evasion groove of the forceps of figure 1.

Wherein the figures include the following reference numerals:

10. a forceps arm; 11. a through hole; 21. a positioning part; 211. a step surface; 22. a clamping portion; 221. a first body; 222. a second body; 223. a first side surface; 224. a second side surface; 225. an avoidance groove; 30. a buffer column; 40. a crystal; 41. a haptic; 42. an optical portion; 43. the edge of the optic.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present application, where the contrary is not intended, the use of directional words such as "upper, lower, top and bottom" is generally with respect to the orientation shown in the drawings, or with respect to the component itself in the vertical, perpendicular or gravitational direction; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

In the present application, unless otherwise specified, lens 40 is referred to as an intraocular lens. In the embodiment of the invention shown in fig. 5, the lens 40 is generally composed of a circular optic portion and haptics 41 disposed at the periphery, wherein the optic portion is composed of an optic 42 and an optic edge 43, and the optic 42 is used to achieve vision correction.

As shown in fig. 1 to 7, the forceps of the embodiment of the present invention includes two forceps arms 10, two holding portions 22, and a positioning portion 21. The first ends of the two forceps arms 10 are close to each other and connected to form a connecting end, and the second ends of the two forceps arms 10 are oppositely arranged and can move relative to the connecting end; the two clamping parts 22 are arranged corresponding to the two forceps arms 10, when an external force acts on the forceps arms 10, a clamping space for clamping the crystal 40 is formed between the two clamping parts 22, and the positioning part 21 is arranged on the inner side surface of at least one clamping part 22 to position the crystal 40. Unless otherwise specified, the inner side surface refers to a surface on which the sides of the two forceps arms 10 opposite to each other are located.

According to the above arrangement, when an external force acts on the forceps arm 10, the two grip portions 22 grip the crystal 40 (i.e., the crystal 40 is located in the grip space formed by the two grip portions 22), and at the same time, the positioning portion 21 can define a position where the free end of the grip portion 22 protrudes toward the center of the crystal 40, so that the grip space formed between the two grip portions 22 is located outside the area where the optical portion 42 of the crystal 40 is located. Thus, when the crystal 40 is randomly clamped by the forceps, the forceps can not clamp the optical part 42 of the crystal 40 due to the limiting effect of the positioning part 21 on the edge 43 of the optical part, and the positioning part 21 can prevent the crystal 40 from moving in the clamping space, so that the surface of the optical part 42 of the crystal 40 can be prevented from being scratched, and the quality of the crystal 40 implanted into the eye is ensured. In addition, in the process of clamping the crystal 40 by using the forceps, the positioning part 21 can prevent the crystal 40 from moving towards the connecting end, so that the stability of clamping the crystal 40 by using the forceps is improved, the crystal 40 can be correctly implanted, the quality of an operation is improved, and postoperative complications of a patient are reduced.

As shown in fig. 2, 3 and 7, in the embodiment of the present invention, the second ends of the two forceps arms 10 are provided with a positioning portion 21.

According to the arrangement, when the crystal 40 is randomly clamped by the tweezers, the two positioning parts 21 can strengthen the limiting effect on the edge 43 of the optical part, and the surface of the optical part 42 of the crystal 40 is better prevented from being scratched. In addition, the stability of the crystal 40 clamped by the forceps is further improved, so that the crystal 40 can be correctly implanted, the quality of the operation is improved, and the postoperative complications of a patient are reduced.

As shown in fig. 2 and 3, in the embodiment of the present invention, the positioning portion 21 is a step surface 211 provided on the inner surface of the clamping portion 22.

According to the above arrangement, the step surface 211 can define the position where the free ends of the holding portions 22 project toward the center of the crystal 40, so that the holding space formed between the two holding portions 22 is located outside the area where the optical portion 42 of the crystal 40 is located. Thus, when the crystal 40 is randomly clamped by the forceps, the forceps cannot clamp the optical part 42 of the crystal 40 due to the limiting effect of the step surface 211 on the edge 43 of the optical part, and the step surface 211 can prevent the crystal 40 from moving in the clamping space, so that the surface of the optical part 42 of the crystal 40 can be prevented from being scratched, and the quality of the crystal 40 implanted into an eye is ensured. In addition, in the process of clamping the crystal 40 by using the forceps, the positioning part 21 can prevent the crystal 40 from moving towards the connecting end, so that the stability of clamping the crystal 40 by using the forceps is improved, the crystal 40 can be correctly implanted, the quality of an operation is improved, and postoperative complications of a patient are reduced.

As shown in fig. 2 and 3, in the embodiment of the present invention, the inner side of the clamping portion 22 is provided with a first side surface 223 and a second side surface 224, wherein the second side surface 224 is disposed near the connecting end, the first side surface 223 is disposed far away from the connecting end, and a step surface 211 is formed between the first side surface 223 and the second side surface 224, wherein the first side surface 223 forms a part of the clamping space.

According to the above arrangement, the step surface 211 can define the position where the free ends of the holding portions 22 project toward the center of the crystal 40, so that the holding space formed between the two holding portions 22 is located outside the area where the optical portion 42 of the crystal 40 is located.

Specifically, as shown in fig. 2 and 3, the clamping portion 22 includes a first body 221 and a second body 222 connected to the first body 221, the second body 222 is disposed near the connection end with respect to the first body 221, an inner side of the first body 221 forms the aforementioned first side surface 223, and an inner side of the second body 222 forms the aforementioned second side surface 224.

Preferably, the first body 221 and the second body 222 are integrally formed. A step surface 211 is formed between the first side surface 223 of the first body 221 and the second side surface 224 of the second body 222, wherein the first side surface 223 forms a part of the clamping space.

According to the arrangement, the first body 221 and the second body 222 are integrally arranged, so that the processing is convenient, and meanwhile, the processing tolerance of the step surface 211 can be well controlled, so that the matching precision of the step surface 211 and the outer peripheral surface of the crystal 40 is ensured.

Of course, in an alternative embodiment not shown in the drawings, the first body 221 and the second body 222 may be separately provided according to actual circumstances.

In the embodiment of the present invention, the surface shape of the step surface 211 is adapted to the outer peripheral surface of the optical portion of the crystal 40, and specifically, the step surface 211 is adapted to the outer peripheral surface of the optical portion edge 43.

According to the arrangement, the crystal 40 is higher in fit with the step surface 211, and the gap is smaller, so that the limiting effect of the positioning part 21 on the optical part edge 43 is enhanced.

Specifically, as shown in fig. 2, 5, and 6, the step surface 211 is an arc-shaped surface. Because the outer peripheral surface of the crystal 40 (specifically, the outer peripheral surface of the optical portion, more specifically, the outer peripheral surface of the optical portion edge 43) is an arc-shaped surface, the arc-shaped surface can better match with the outer peripheral surface of the crystal 40, so that the limiting effect of the positioning portion 21 on the optical portion edge 43 is enhanced, the surface of the optical portion 42 of the crystal 40 can be prevented from being scratched, the stability of the tweezers for clamping the crystal 40 is improved, and the crystal 40 can be implanted correctly.

Of course, in an alternative embodiment not shown in the drawings, the step surface 211 adapted thereto may be provided according to the specific shape of the outer peripheral surface of the crystal 40. For example, when the outer peripheral surface of the crystal 40 is a flat surface, the step surface 211 may be provided as a flat surface.

As shown in fig. 3, in the embodiment of the present invention, the distance d between the step surface 211 and the outer edge of the first side surface 223 satisfies the following formula: d is less than or equal to 0.2r, wherein r is the radius of the crystal 40. Note that the distance d is a vertical distance from an outer edge of the first side surface 223 away from the connection end to the step surface 211.

According to the arrangement, when d is less than or equal to 0.2r, the position of the clamping part 22, which is far away from the connecting ends of the two forceps arms 10 (namely the free end) and extends to the center of the crystal 40, is ensured to be positioned outside the area of the optical part 42 of the crystal 40. Thus, when the crystal 40 is randomly clamped by the forceps, the forceps cannot clamp the optical part 42 of the crystal 40 due to the limiting effect of the positioning part 21, so that the surface of the optical part 42 of the crystal 40 is prevented from being scratched, and the quality of the crystal 40 during implantation is ensured.

Specifically, the distance d between the step surface 211 and the outer edge of the first side surface 223 is greater than or equal to 0.2mm and less than or equal to 0.8 mm.

In general, the radius r of the crystal 40 is defined as r ≥ 2.5mm and r ≤ 5 mm.

Preferably, the distance d between the step surface 211 and the outer edge of the first side surface 223 is 0.6 mm. Through a plurality of experiments, when the value of d is 0.6mm, the position of the free end of the clamping part 22 extending to the center of the crystal 40 can be well limited by the positioning part 21 of the tweezers, so that the clamping space is positioned outside the area of the optical part 42 of the crystal 40, and the surface of the optical part 42 of the crystal 40 is prevented from being scratched.

As shown in fig. 3, in the embodiment of the present invention, the first side 223 is an inclined plane, and the distance between the plane of the first side 223 and the plane of the second side 224 decreases gradually along the direction away from the connecting end.

It should be noted that the distance between the plane of the first side 223 and the plane of the second side 224 is the perpendicular distance between the two planes.

It should be noted that the first side surface 223 is a holding surface when the crystal 40 is held by the tweezers, and two tweezers arms 10 of the tweezers in the embodiment of the present invention are respectively provided with a holding surface, and the two holding surfaces are respectively in direct contact with the upper and lower surfaces of the optical portion edge 43 of the crystal 40, so as to realize the holding function of the tweezers on the crystal 40.

According to the arrangement, the contact area between the clamping surface and the surface of the edge 43 of the optical part can be reduced, so that the surface of the edge 43 of the optical part is prevented from being clamped by the clamping surface, and the quality of the lens 40 during implantation is ensured.

Specifically, as shown in fig. 3, in an embodiment of the present invention, an included angle α is formed between the first side surface 223 and the end surface of the first body 221, which is far away from the connecting end, wherein the included angle α is greater than or equal to 80 ° and smaller than 90 °.

Preferably, the angle α is set to 87 °.

Multiple tests show that when the included angle alpha is set to be 87 degrees, the clamping capacity of the tweezers can be guaranteed, and the contact area between the clamping surface and the surface of the crystal 40 can be reduced, so that the surface of the crystal 40 is prevented from being damaged by the clamping surface, and the quality of the crystal 40 during implantation is guaranteed.

Of course, in an alternative embodiment not shown in the drawings, the first side 223 may be arranged planar, i.e. a is arranged at 90 °, depending on the actual situation.

As shown in fig. 2, 5 and 6, in the embodiment of the present invention, the tweezers further include an avoiding groove 225 disposed on the holding portion 22, and the avoiding groove 225 is disposed on one side of the holding portion 22 away from the connecting end.

The contact area between the clamping surface and the surface of the edge 43 of the optical part can be reduced by the avoiding groove 225, so that the surface of the edge 43 of the optical part is prevented from being clamped by the clamping surface, and the quality of the crystal 40 during implantation is ensured.

Specifically, as shown in fig. 2, 5 and 6, the bypass groove 225 is an arc-shaped groove, and the bypass groove 225 is disposed on the side of the clamping portion 22 away from the connecting end.

In an alternative embodiment, as shown in fig. 7, the relief groove 225 is a V-shaped groove, and the relief groove 225 is disposed on a side of the gripping portion 22 away from the connection end.

Of course, in an alternative embodiment not shown in the drawings, the relief groove 225 may also be provided as a U-shaped groove.

As shown in fig. 1 and 4, in the embodiment of the present invention, at least one forceps arm 10 is provided with a plurality of through holes 11, and the plurality of through holes 11 are arranged at intervals along the length direction of the forceps arm 10.

According to the arrangement, the finger part of the operator can partially extend into the through hole 11, so that the fingers and the forceps arms 10 of the forceps can be prevented from sliding relatively in the process of clamping the crystal 40 by the forceps, and the clamping stability can be ensured when the operator operates the forceps by hands.

Specifically, as shown in fig. 1 and 4, three through holes 11 are formed in the forceps arm 10, and the three through holes 11 are arranged at intervals along the length direction of the forceps arm 10. Wherein, the aperture of the through hole 11 in the middle is larger than the apertures of the two through holes 11 at the two ends.

According to the above arrangement, the through hole 11 in the middle is adapted for the thumb to extend into, and the two through holes 11 at both ends are adapted for the index finger and the middle finger to extend into. Therefore, the clamping stability can be better ensured when the clamping device is operated by hands.

Of course, in an alternative embodiment not shown in the drawings, the through hole 11 may not be provided on the forceps arm 10, but a skid-proof part may be provided on the surface of the forceps arm 10, for example, the skid-proof part may be at least one of a groove or a stripe or a concave-convex structure, a frosted plane, and the like.

As shown in figure 1, in the embodiment of the present invention, the inner side surface of at least one forceps arm 10 is provided with a buffer column 30.

In the above arrangement, the buffer column 30 can buffer the clamping force generated when the crystal 40 is clamped by the tweezers, thereby preventing the clamping surface of the tweezers from crushing or collapsing the surface of the crystal 40 due to the excessive clamping force.

Specifically, as shown in fig. 1, in the embodiment of the present invention, two buffer columns 30 are disposed on only one of the forceps arms 10, and the buffer columns 30 are adhered to the inner sides of the forceps arms 10.

Specifically, the cushion column 30 is made of an elastic material. Preferably, the cushion column 30 is rubber or sponge.

Of course, in an alternative embodiment not shown in the drawings, one damping post 30 may be provided on each of the inner faces of the two forceps arms (i.e. the faces on the sides opposite to each other), the two damping posts 30 preferably being spaced apart along the length of the forceps arm 10.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: when external force acts on the forceps arms, the two clamping parts clamp the crystal (namely, the crystal is positioned in the clamping space formed by the two clamping parts), and meanwhile, the positioning part can limit the position of the free end of the clamping part extending to the center of the crystal, so that the clamping space formed between the two clamping parts is positioned outside the area where the optical part of the crystal is positioned. Therefore, when the crystal is randomly clamped by the tweezers, the tweezers cannot clamp the optical part of the crystal due to the limiting effect of the positioning part, and the positioning part can prevent the crystal from moving in the clamping space, so that the surface of the optical part of the crystal can be prevented from being scratched, and the quality of the crystal implanted into eyes is ensured. In addition, at the in-process that utilizes tweezers centre gripping crystal, location portion can prevent that the crystal from moving towards the link, like this, has improved tweezers centre gripping crystal's stability to guarantee that the crystal can be accurate implantation, and then improve the quality of operation, reduce the complication of patient's postoperative.

In addition, in the above description, the description has been given mainly by taking as an example the operation of implanting the intraocular lens using the forceps, but the forceps are not limited thereto, and the forceps are also applicable to other operations such as ordinary grasping, taking, and moving of the intraocular lens. Furthermore, the present invention provides a pair of tweezers, which is suitable for gripping contact lenses, orthokeratology lenses, intraocular lenses with lens eyes, and lenses of frame glasses, or suitable for gripping articles having similar structures to the aforementioned ophthalmic lenses.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Forceps, characterized in that the forceps comprise:

the forceps arms (10) are close to each other and connected to form a connecting end, and the second ends of the forceps arms (10) are oppositely arranged and can move relative to the connecting end;

the two clamping parts (22) are arranged corresponding to the two forceps arms (10), and when external force acts on the forceps arms (10), a clamping space for clamping a crystal is formed between the two clamping parts (22);

and the positioning part (21) is arranged on the inner side surface of at least one clamping part (22) and used for positioning the crystal.

2. The forceps according to claim 1, wherein the second ends of the two forceps arms (10) are each provided with one of the positioning portions (21).

3. The forceps according to claim 1, wherein the positioning portion (21) is a stepped surface (211) provided on an inner side surface of the grip portion (22).

4. The forceps according to claim 3, wherein the step surface (211) has a surface shape that fits the outer peripheral surface of the optical portion of the crystal.

5. The forceps according to claim 3 or 4, wherein the step surface (211) is an arc-shaped surface or a flat surface.

6. The forceps according to claim 3, wherein the inner side of the holding portion (22) is provided with a first side (223) and a second side (224), wherein the second side (224) is arranged close to the connecting end, wherein the first side (223) is arranged away from the connecting end, wherein the step surface (211) is formed between the first side (223) and the second side (224), wherein the first side (223) forms part of the holding space.

7. The forceps according to claim 6, wherein a perpendicular distance d between the step surface (211) and an outer edge of the first side surface (223) satisfies the following formula: d is less than or equal to 0.2r, wherein r is the radius of the crystal.

8. The forceps according to claim 7, wherein the distance d between the step surface (211) and the outer edge of the first side surface (223) is in a range of d being greater than or equal to 0.2mm and d being less than or equal to 0.8 mm.

9. The forceps according to claim 6, wherein the first side (223) is beveled, the distance between the plane of the first side (223) and the plane of the second side (224) decreasing in a direction away from the connecting end; or an included angle alpha is formed between the first side surface (223) and the end surface, far away from the connecting end, of the first body (221) of the clamping portion (22), wherein the included angle alpha is greater than or equal to 80 degrees and smaller than or equal to 90 degrees.

10. The forceps according to claim 1 or 2, further comprising an avoidance groove (225) provided on the holding portion (22), and the avoidance groove (225) is provided on a side of the holding portion (22) away from the connecting end.

11. The forceps according to claim 10, wherein the avoiding groove (225) is a V-shaped groove or an arc-shaped groove or a U-shaped groove.

12. The forceps according to claim 1 or 2, wherein at least one of the forceps arms (10) is provided with a plurality of through holes (11), and the through holes (11) are arranged at intervals along the length direction of the forceps arm (10); or the outer side surface of at least one forceps arm (10) is provided with an anti-slip part.

13. The forceps according to claim 1 or 2, wherein the inner side of at least one of the forceps arms (10) is provided with a buffer column (30).