Microscopic needle holder for ophthalmology department

Abstract

The utility model relates to a microscopic needle holder for ophthalmology, which comprises a handle, a needle holder and a needle holder, the button is rotationally connected to the handle, and one end of the button is arranged in the operation cavity; the fixing piece comprises a mounting channel; the fixing piece is detachably connected to the end, provided with the operation cavity, of the handle. One end of the clamping jaw is fixed in the mounting channel; the other end of the connecting rod penetrates through the mounting channel to the outside, and is provided with three uniformly distributed sub-claws; the telescopic sleeve is arranged on the clamping jaw in a sleeving manner; one end of the telescopic sleeve is located in the operation cavity, and the other end of the telescopic sleeve penetrates through the mounting channel to the outside; when the button is pressed down, the end, located in the operation cavity, of the button pushes the telescopic sleeve to move, and along with movement of the telescopic sleeve, the space among the three sub-claws becomes smaller, and the needle head is clamped. And the operation space required by an operator can be reduced, and safe and accurate operation can be carried out by utilizing the limited space.

Description

Technical Field

[0001] The utility model relates to the technical field of ophthalmic microscopic needle holders, in particular to an ophthalmic microscopic needle holder. Background Art

[0002] Micro-needle holders are often used during ophthalmic surgery. Figure 1 As shown, the existing microscopic needle holder is very practical in most ophthalmic microsurgeries. When using the existing microscopic needle holder to perform microscopic suturing operations on the conjunctiva and cornea respectively, the microscopic needle holder holds the needle very reliably and is easy to operate, but it is only limited to the premise of having sufficient space for operation.

[0003] When deep eye surgery is required, for example, the surgical site is at the superior rectus muscle, inferior rectus muscle, and lateral rectus muscle. The operating space is narrow when performing surgery at such locations. Suturing operations on these walls of the eyeball (sclera) are limited by the orbit. When the surgical site cannot be fully exposed, it is inaccurate to perform limited suturing operations, which can easily result in an unsatisfactory suturing position and even lead to surgical failure. Even when an assistant uses a surgical retractor to assist in full exposure, the operation is still very cramped, and the existing microneedle holder is no longer applicable. Utility Model Content

[0004] The utility model provides an ophthalmic microscopic needle holder to solve the technical problem that the existing microscopic needle holder cannot be installed and accurately operated in a limited operating space due to the limitation of the eye socket after holding the needle.

[0005] The utility model discloses an ophthalmic microscopic needle holder, which comprises a handle, a button, a fixing piece, a clamping claw, and a telescopic sleeve, wherein an operation cavity is provided at one end of the handle; the button is rotatably connected to the handle, and one end of the button is provided in the operation cavity; the fixing piece comprises a mounting channel; the fixing piece is detachably connected to the end of the handle provided with the operation cavity; one end of the clamping claw is fixed in the mounting channel; the other end of the clamping claw passes through the mounting channel to the outside, and the end is provided with three evenly arranged sub-claws; the telescopic sleeve is sleeved on the clamping claw; one end of the telescopic sleeve is located in the operation cavity, and the other end of the telescopic sleeve passes through the mounting channel to the outside; when the button is pressed, the end of the button located in the operation cavity pushes the telescopic sleeve to move, and as the telescopic sleeve moves, the space between the three sub-claws becomes smaller and the needle is clamped.

[0006] Furthermore, the ophthalmic microscope needle holder also includes a needle fixing block, which is arranged on the clamping jaw and located between the three sub-jaws.

[0007] Furthermore, a needle fixing groove is provided on a side of the needle fixing block facing the sub-claw.

[0008] Furthermore, the ophthalmic microscopic needle holder also includes a plurality of clamping members, and the plurality of clamping members are respectively arranged on the three sub-claws.

[0009] Furthermore, the clamping member includes a fixed sleeve and a clamping protrusion, wherein the fixed sleeve is sleeved on the sub-claw; the clamping protrusion is arranged on the fixed sleeve and is arranged toward the axis of the clamping claw.

[0010] Furthermore, the clamping member includes a clamping block, the cross-sectional shape of the clamping block is trapezoidal; a plane with a large area on the clamping block is arranged on the sub-claw, and a plane with a small area on the clamping block is arranged toward the axis of the clamping claw; a plurality of clamping ridges are arranged on the plane with a small area of ​​the clamping block.

[0011] Furthermore, the inner diameter of one end of the telescopic sleeve close to the sub-claw is smaller than the inner diameter of one end of the telescopic sleeve away from the sub-claw.

[0012] Furthermore, the ophthalmic microscopic needle holder also includes a reset spring, which is arranged in the operating cavity and sleeved on the telescopic sleeve; the reset spring is arranged between the telescopic sleeve and the fixing member.

[0013] Furthermore, the ophthalmic microscope needle holder also includes an auxiliary reinforcement component, which includes a reinforcement piece and a fixing sleeve, and the reinforcement piece includes a reinforcement channel; the reinforcement piece is arranged at an end of the fixing piece away from the handle, and the installation channel is connected to the reinforcement channel; the other end of the telescopic sleeve passes through the installation channel and the reinforcement channel to the outside; the fixing sleeve is arranged on the reinforcement piece and is detachably connected to the fixing piece.

[0014] Furthermore, the button includes a pressure plate, a rotating plate, and a pushing protrusion, wherein a side of the pressure plate away from the handle is an arc surface; the rotating plate is rotatably connected to the handle; one end of the rotating plate is connected to one end of the pressure plate, and the other end of the rotating plate passes through the handle to the operating cavity; the pushing protrusion is arranged at an end of the rotating plate away from the pressure plate, and is located on the side of the rotating plate facing the telescopic sleeve.

[0015] The ophthalmic microscopic needle holder provided by the utility model can achieve the following technical effects:

[0016] 1. After the traditional needle holder holds the needle, the needle and the needle holder are in a vertical position, which takes up too much space. The ophthalmic microscopic needle holder of the utility model is provided with a button on the handle, and the telescopic sleeve is driven to move by pressing the button. The telescopic sleeve moves toward the direction of the clamping claw, and the space between the three sub-claws becomes smaller to clamp the needle. When the surgeon performs surgery, the three-claw needle holding method can expose the needle to the surgical field, and the tail end of the needle is surrounded and clamped by the three sub-claws, thus saving the space required for suturing. The microscopic needle holder disclosed in the utility model reduces the space required for the needle holder to hold the needle, can reduce the operating space required by the surgeon, and can use limited space for safe and accurate operations. The ophthalmic microscopic needle holder of the utility model can also play a great advantage in scleral circumference surgery and episcleral compression surgery.

[0017] 2. By providing a clamping piece on the sub-claw, the gripping force of the sub-claw on the needle can be further increased.

[0018] The above general description and the following description are merely exemplary and explanatory and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] One or more embodiments are exemplarily described by corresponding drawings, and these exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are regarded as similar elements, and wherein:

[0020] Figure 1 It is the background technology diagram of the utility model;

[0021] Figure 2 It is an overall schematic diagram of an embodiment of an ophthalmic microscopic needle holder of the utility model;

[0022] Figure 3 It is a partial exploded schematic diagram of an embodiment of a handle and a button of an ophthalmic micro needle holder of the utility model;

[0023] Figure 4 It is a cross-sectional schematic diagram of an embodiment of a fixing member of an ophthalmic microscopic needle holder of the utility model;

[0024] Figure 5 It is a cross-sectional schematic diagram of an embodiment of a telescopic sleeve of an ophthalmic microscopic needle holder of the utility model;

[0025] Figure 6 It is a partial cross-sectional schematic diagram of an embodiment of an ophthalmic microscopic needle holder of the utility model;

[0026] Figure 7 It is a schematic diagram of an embodiment of a clamping jaw of an ophthalmic microscopic needle holder of the utility model;

[0027] Figure 8 yes Figure 7 A magnified view of part A;

[0028] Fig. 9 yes Figure 7 A magnified view of part B;

[0029] Fig.10 It is a schematic diagram of an embodiment of a sub-claw of an ophthalmic microscopic needle holder of the utility model;

[0030] Fig.11 yes Fig.10 Enlarged view of part C;

[0031] Fig.12 The utility model is an exploded schematic diagram of an auxiliary reinforcement component of an ophthalmic microscopic needle holder according to an embodiment of the present invention.

[0032] Reference numerals:

[0033] 1. handle; 11. operating cavity; 12. first protrusion; 13. through hole; 14. hinge protrusion; 15. hinge hole; 16. anti-slip part; 2. button; 21. pressure plate; 22. rotating plate; 23. push protrusion; 24. pin shaft; 3. fixing piece; 31. connecting groove; 32. limiting column; 33. installation channel; 34. fixing hole; 4. clamping claw; 41. fixing column; 42. sub-claw; 43. arc segment; 44. Clamping space; 45, fixed needle block; 46, fixed needle groove; 5, telescopic sleeve; 51, waist-shaped hole; 52, tube cavity; 53, limit block; 54, reset spring; 6, clamping piece; 61, fixed sleeve; 62, clamping protrusion; 63, clamping block; 64, clamping ridge; 7, auxiliary reinforcement component; 71, reinforcement piece; 72, reinforcement channel; 73, limit protrusion; 74, fixed sleeve; 75, sleeve cavity; 76, mounting hole. DETAILED DESCRIPTION

[0034] In order to be able to understand the features and technical contents of the embodiments of the utility model in more detail, the implementation of the embodiments of the utility model is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the utility model. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0035] The terms "first", "second", etc. in the specification and claims of the embodiments of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the embodiments of the utility model described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0036] In the embodiments of the present utility model, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present utility model and its embodiments, and are not intended to limit the indicated devices, elements or components to have specific directions, or to be constructed and operated in specific directions. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present utility model can be understood according to the specific circumstances.

[0037] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the utility model can be understood according to specific circumstances.

[0038] Unless otherwise specified, the term "plurality" means two or more and "plurality" means two or more.

[0039] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present utility model can be combined with each other.

[0040] like Figure 2 , Figure 3As shown, the utility model discloses an ophthalmic microscopic needle holder, which includes a handle 1, a button 2, a fixing part 3, a clamping claw 4, and a telescopic sleeve 5. An operating cavity 11 is constructed on the end face of one end of the handle 1, and a first protrusion 12 is constructed on the end face, and the first protrusion 12 is arranged around the cavity opening of the operating cavity 11. An external thread is constructed on the outer wall of the first protrusion 12. A through hole 13 is constructed on the outer wall of the handle 1, and the operating cavity 11 is connected to the outside through the through hole 13. Two hinged protrusions 14 are also constructed on the outer wall of the handle 1, and the two hinged protrusions 14 are arranged opposite to each other and are respectively located on both sides of the through hole 13. A hinge hole 15 is constructed on the end of the two hinged protrusions 14 away from the handle 1.

[0041] Alternatively, if Figure 2 As shown, an anti-slip portion 16 is also constructed on the outer wall of the handle 1, and the anti-slip portion 16 can be coated and supported by a silicone material, or can be composed of a plurality of anti-slip stripes. The anti-slip portion 16 is arranged on the handle 1, which is more conducive to the operator holding the ophthalmic microscopic needle holder disclosed in the utility model.

[0042] like Figure 3 As shown, the button 2 includes a pressing plate 21, a rotating plate 22, and a pushing protrusion 23. One end of the rotating plate 22 passes through the through hole 13 and enters the operating chamber 11, and the other end of the rotating plate 22 is located between the two hinge protrusions 14. A hinge hole 15 is configured at the other end of the rotating plate 22. The hinge hole 15 of the rotating plate 22 is aligned with the hinge holes 15 of the two hinge protrusions 14, and the pins 24 are sequentially penetrated to realize the rotation connection between the rotating plate 22 and the handle 1. The end of the rotating plate 22 located in the operating chamber 11 is configured with a pushing protrusion 23, and the pushing protrusion 23 is located on the side of the rotating plate 22 facing the cavity opening of the operating chamber 11, so that it is convenient to push the telescopic sleeve 5 to move. The side of the pressing plate 21 away from the handle 1 is an arc surface, which is convenient for the operator to press the pressing plate 21. The end of the pressing plate 21 close to the rotating plate 22 is fixedly connected to the end of the rotating plate 22 away from the operating chamber 11.

[0043] Optionally, not shown in the figure, a layer of anti-slip silicone layer is also provided on the curved surface of the pressing plate 21 to further increase the friction between the operator's fingers and the pressing plate 21 when pressing.

[0044] like Figure 2 , Figure 4As shown, a connection groove 31 is configured at one end of the fixing member 3, and an internal thread matching the external thread of the first protrusion 12 is configured on the groove wall of the connection groove 31. A limit column 32 is configured in the connection groove 31, and the limit column 32 is arranged coaxially with the fixing member 3. The fixing member 3 is configured with a mounting channel 33, and the mounting channel 33 penetrates the fixing member 3 along the axis of the fixing member 3. Through the threaded matching method, the fixing member 3 is detachably connected to the end of the handle 1 provided with the operating cavity 11. The fixing member 3 is also configured with a fixing hole 34 that penetrates the mounting channel 33, and the fixing hole 34 is vertically arranged on the mounting channel 33.

[0045] Alternatively, if Figure 5 As shown, one end of the telescopic sleeve 5 is rounded to avoid scratching the patient's eye tissue. A waist-shaped hole 51 is constructed on the other end of the telescopic sleeve 5. The waist-shaped hole 51 passes through the tube cavity 52 of the telescopic sleeve 5. The waist-shaped hole 51 is vertically arranged in the tube cavity 52 of the telescopic sleeve 5. Optionally, as Figure 5 As shown, the inner diameter of the end of the telescopic sleeve 5 with the rounded corner is d, and the inner diameter of the end of the telescopic sleeve 5 close to the waist-shaped hole 51 is D, and d is smaller than D.

[0046] Alternatively, if Figure 3 , Figure 4 , Figure 6 As shown, a limit block 53 is constructed on the outer wall of the telescopic sleeve 5, and the limit block 53 is located at the end of the telescopic sleeve 5 away from the rounded corner. The ophthalmic micro needle holder also includes a reset spring 54. When the fixing member 3 is connected to the handle 1, the reset spring 54 is sleeved on the telescopic sleeve 5 and is located in the operating cavity 11 at the same time. The reset spring 54 is located between the telescopic sleeve 5 and the fixing member 3. At this time, one end of the reset spring 54 abuts against the limit block 53, and the other end of the reset spring 54 abuts against the limit column 32.

[0047] like Figures 7 to 9 As shown, the clamping jaw 4 includes a fixed column 41 and three sub-claws 42. One end of the fixed column 41 is configured with a fixing hole 34. One ends of the three sub-claws 42 are all arranged on the other end surface of the fixed column 41. The three sub-claws 42 are evenly arranged around the axis of the fixed column 41. One end of the sub-claw 42 away from the fixed column 41 is bent to form an arc segment 43. The arc segments 43 of the three sub-claws 42 enclose a clamping space 44 for clamping a needle.

[0048] Alternatively, if Fig. 9 As shown, the ophthalmic microscopic needle holder also includes a needle fixing block 45, and a needle fixing groove 46 is configured on one side of the needle fixing block 45. The needle fixing block 45 is arranged on the three sub-claws 42, and the needle fixing block 45 is located between the three sub-claws 42. At the same time, the needle fixing block 45 is located at one end of the sub-claw 42 away from its arc segment 43. The side of the needle fixing block 45 provided with the needle fixing groove 46 is arranged toward the arc segment 43 of the sub-claw 42.

[0049] Alternatively, if Fig. 9 As shown, the ophthalmic micro needle holder also includes a plurality of clamping members 6. Optionally, the number of the supporting members is the same as the number of the sub-claws 42, and the three clamping members 6 are respectively arranged on the three sub-claws 42. Since the manner in which the clamping members 6 are arranged on the sub-claws 42 is the same, the connection between one of the clamping members 6 and one of the sub-claws 42 is taken as an example for introduction, and the clamping member 6 includes a fixed sleeve 61 and a plurality of clamping protrusions 62. The shape of the clamping protrusion 62 is spherical, and the clamping protrusion 62 is arranged on the outer surface of the fixed sleeve 61, and the plurality of supporting protrusions are uniformly arranged in sequence along the longitudinal direction of the fixed sleeve 61. Optionally, the fixed sleeve 61 and the clamping protrusion 62 are integrally formed. During installation, the fixed sleeve 61 of the clamping member 6 is sleeved on the arc segment 43 of the sub-claw 42, and the fixed sleeve 61 and the sub-claw 42 are fixedly connected by bonding. When the fixing sleeve 61 is disposed on the sub-claw 42 , the clamping protrusion 62 is disposed toward the axis of the fixing column 41 of the clamping jaw 4 , that is, the clamping protrusion 62 can be regarded as being disposed toward the axis of the clamping jaw 4 .

[0050] Alternatively, if Figures 9 to 11 As shown, the ophthalmic microscopic needle holder also includes a plurality of clamping members 6. Optionally, the number of the clamping members is the same as the number of the sub-claws 42, and three clamping members 6 are respectively arranged on the three sub-claws 42. Since the clamping members 6 are arranged on the sub-claws 42 in the same manner, the connection between one clamping member 6 and one sub-claw 42 is taken as an example for description. The clamping member 6 includes a clamping block 63. Fig.11 It can be seen that the side shape of the clamping block 63 is trapezoidal, and the upper side of the clamping block 63 is smaller than the lower side of the clamping block 63. On the clamping block 63, the plane where the lower side is located is a plane with a large area, and this plane is set on the sub-claw 42. The plane where the upper side is located is a plane with a small area, and this plane is set toward the axis of the fixed column 41 of the clamping jaw 4, that is, it can be regarded as a plane with a small area on the clamping block 63 is set toward the axis of the clamping jaw 4. A plurality of clamping ribs 64 are constructed on a plane with a small area of ​​the clamping block 63, and the plurality of clamping ribs 64 are uniformly arranged in sequence along the length direction of the clamping block 63, and the length direction of the clamping ribs 64 is perpendicular to the length direction of the clamping block 63.

[0051] Alternatively, if Figure 2 , Fig.12 As shown, the ophthalmic micro needle holder also includes an auxiliary reinforcement component 7, which includes a reinforcement piece 71 and a fixing sleeve 74. The reinforcement piece 71 is cylindrical, and a reinforcement channel 72 is constructed inside the reinforcement piece 71, and the reinforcement channel 72 runs through the reinforcement piece 71. A chamfer is constructed on the outer wall of one end of the reinforcement piece 71, and a limiting protrusion 73 is constructed on the outer wall of the other end of the reinforcement piece 71. The end of the fixing piece 3 away from the handle 1 is constructed with an external thread. A sleeve cavity 75 is constructed inside the fixing sleeve 74, and an internal thread that matches the external thread of the fixing piece 3 is constructed on the wall of the sleeve cavity 75, and a bottom of the sleeve cavity 75 is constructed with a

[0052] Mounting holes 76.

[0053] During installation, the reinforcing member 71 is first set at the end of the fixing member 3 away from the handle 1, and the installation channel 33 of the fixing member 3 is connected to the reinforcement channel 72 of the reinforcing member 71. At this time, the end of the telescopic sleeve 5 with rounded corners passes through the installation channel 33 and the reinforcement channel 72 to the outside in sequence. Finally, the fixing sleeve 74 is sleeved on the reinforcing member 71, and the fixing sleeve 74 is detachably connected to the fixing member 3. At this time, the end of the reinforcing member 71 with chamfered corners passes through the installation hole 76 of the fixing sleeve 74 to the outside, and the limiting protrusion 73 of the reinforcing member 71 contacts the bottom of the sleeve cavity 75 of the fixing sleeve 74.

[0054] Application scenario of an exemplary embodiment:

[0055] like Figures 2 to 9 , Fig.12 As shown, during installation, the end of the telescopic sleeve 5 with rounded corners is first inserted through the installation channel 33 of the fixing member 3, so that the waist-shaped hole 51 of the telescopic sleeve 5 is located at the fixing hole 34 of the fixing member 3, and then the fixing column 41 of the clamping jaw 4 is inserted into the tube cavity 52 of the telescopic sleeve 5 from the end of the telescopic sleeve 5 with rounded corners, and the fixing hole 34 of the fixing column 41 is aligned with the fixing hole 34 of the fixing member 3, and then the fixing holes 34 of the two are penetrated in sequence by bolts, and the installation of the clamping jaw 4, the telescopic sleeve 5 and the fixing member 3 is completed. At this time, the telescopic sleeve 5 is located between the clamping jaw 4 and the fixing member 3, the clamping jaw 4 is fixed to the fixing member 3, and the telescopic sleeve 5 can move along the length direction of the clamping jaw 4. At the same time, the moving distance of the telescopic sleeve 5 is the length of the waist-shaped hole 51, and the bolt also has a limiting effect on the telescopic sleeve 5. The reset spring 54 is sleeved on the telescopic sleeve 5, one end of the reset spring 54 abuts against the limit block 53, and the other end of the reset spring 54 abuts against the limit column 32. Finally, the fixing member 3 is connected to the handle 1 , and one end of the telescopic sleeve 5 provided with the limit block 53 is located in the operating cavity 11 of the handle 1 and contacts the pushing protrusion 23 of the button 2 .

[0056] When in use, the pressure plate 21 of the button 2 is pressed, and the pressure plate 21 drives the rotating plate 22 to rotate and causes the pushing protrusion 23 to push the telescopic sleeve 5, and the telescopic sleeve 5 moves away from the handle 1. As the telescopic sleeve 5 moves, the clamping space 44 between the three sub-claws 42 of the clamp 4 gradually becomes smaller, and the clamping parts 6 on the three sub-claws 42 clamp the needle.

[0057] After use, the pressing of the pressing plate 21 of the button 2 is stopped, and the return spring 54 drives the telescopic sleeve 5 to return to its original position, so that the clamping space 44 between the three sub-pawls 42 becomes larger, making it easier to remove the needle.

[0058] The above description and the accompanying drawings fully illustrate the embodiments of the utility model so that those skilled in the art can practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. The embodiments of the utility model are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims

1. An ophthalmic microscopic needle holder, characterized in that: include: A handle (1) having an operating chamber (11) at one end thereof; A button (2) is rotatably connected to the handle (1), and one end of the button (2) is disposed in the operating cavity (11); A fixing member (3) comprising a mounting channel (33); the fixing member (3) is detachably connected to one end of the handle (1) provided with the operating cavity (11); A clamping claw (4), one end of which is fixed in the installation channel (33); the other end of which passes through the installation channel (33) to the outside, and is provided with three evenly arranged sub-claws (42); A telescopic sleeve (5) is sleeved on the clamping jaw (4); one end of the telescopic sleeve (5) is located in the operating chamber (11), and the other end of the telescopic sleeve (5) passes through the installation channel (33) to the outside; When the button (2) is pressed, one end of the button (2) located in the operating chamber (11) pushes the telescopic sleeve (5) to move, and as the telescopic sleeve (5) moves, the space between the three sub-claws (42) becomes smaller and clamps the needle.

2. The ophthalmic micro needle holder according to claim 1, characterized in that: Also includes: The needle fixing block (45) is arranged on the clamping jaw (4) and is located between the three sub-jaws (42).

3. The ophthalmic micro needle holder according to claim 2, characterized in that: A needle fixing groove (46) is provided on a side of the needle fixing block (45) facing the sub-claw (42).

4. The ophthalmic micro needle holder according to any one of claims 1 to 3, characterized in that: Also includes: A plurality of clamping members (6) are respectively arranged on the three sub-claws (42).

5. The ophthalmic micro needle holder according to claim 4, characterized in that: The clamping member (6) comprises: A fixed sleeve (61) sleeved on the sub-claw (42); The clamping protrusion (62) is arranged on the fixing sleeve (61) and is arranged toward the axis of the clamping jaw (4).

6. The ophthalmic micro needle holder according to claim 4, characterized in that: The clamping member (6) comprises: The clamping block (63) has a trapezoidal cross-sectional shape; a plane with a larger area on the clamping block (63) is arranged on the sub-claw (42), and a plane with a smaller area on the clamping block (63) is arranged toward the axis of the clamping claw (4); A plurality of clamping ridges (64) are provided on a plane with a small area of ​​the clamping block (63).

7. The ophthalmic micro needle holder according to claim 1, characterized in that: The inner diameter of the end of the telescopic sleeve (5) close to the sub-claw (42) is smaller than the inner diameter of the end thereof away from the sub-claw (42).

8. The ophthalmic micro needle holder according to claim 1, characterized in that: Also includes: A return spring (54) is arranged in the operating chamber (11) and sleeved on the telescopic sleeve (5); the return spring (54) is arranged between the telescopic sleeve (5) and the fixing member (3).

9. The ophthalmic micro needle holder according to claim 1, characterized in that: It also includes an auxiliary reinforcement component (7), wherein the auxiliary reinforcement component (7) includes: A reinforcing member (71) comprising a reinforcing channel (72); the reinforcing member (71) is arranged at one end of the fixing member (3) away from the handle (1), and the mounting channel (33) is communicated with the reinforcing channel (72); the other end of the telescopic sleeve (5) passes through the mounting channel (33) and the reinforcing channel (72) to the outside; A fixing sleeve (74) is sleeved on the reinforcing member (71) and is detachably connected to the fixing member (3).

10. The ophthalmic micro needle holder according to claim 1, characterized in that: The button (2) comprises: The pressing plate (21) has a side surface away from the handle (1) which is a curved surface; A rotating plate (22) is rotatably connected to the handle (1); one end of the rotating plate (22) is connected to one end of the pressing plate (21), and the other end of the rotating plate (22) passes through the handle (1) to the operating cavity (11); The pushing protrusion (23) is arranged at one end of the rotating plate (22) away from the pressing plate (21) and is located on a side of the rotating plate (22) facing the telescopic sleeve (5).

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