Optic nerve specimen collector

Abstract

The present invention provides an optic nerve specimen collector, which includes a body, a limiting assembly and a shearing assembly. The body includes a first handle and a second handle connected by a hinge, the first handle includes a first hand-held portion and a first insertion portion, the second handle includes a second hand-held portion and a second insertion portion, when the first insertion portion and the second insertion portion are in contact, there is an angle between the first hand-held portion and the second hand-held portion, and the free end of the second insertion portion is connected to an eyeball bracket; the limiting assembly includes a driving handle and an elastic member, the first end of the driving handle can be rotatably connected to the first hand-held portion, the elastic member is connected to the second hand-held portion, and the second end of the driving handle is connected to the elastic member; the shearing assembly includes a linkage mechanism and scissors, the first end of the linkage mechanism is connected to the scissors, and the second end of the linkage mechanism is connected to the driving handle. The present invention can accurately control the optic nerve collection length by reasonably configuring parameters according to different animal species.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an optic nerve specimen collector. Background Art

[0002] The optic nerve is the second pair of cranial nerves in humans. It starts from the optic disc and ends at the optic chiasm, and is responsible for transmitting visual information. The optic nerve is part of the central nervous system. The visual information obtained by the retina is transmitted to the brain through the optic nerve. It is the only way for visual information to be transmitted to the visual center. The total length is about 42mm to 47mm. According to the course of the optic nerve, it can be divided into four sections, namely the intraocular section, the intraorbital section, the intratubular section, and the intracranial section. Among them, the intraocular section starts from the optic disc to the sclerochoroidal canal, and includes the optic disc and the cribriform plate, which is about 1mm long; the intraorbital section is from the eyeball to the orbital opening of the optic canal, with a total length of about 25mm to 35mm, and is "S"-shaped in the orbit to ensure that the eyeball can rotate freely without being restrained; the intratubular section is the part that passes through the bony optic canal, which is about 6mm long; the intracranial section refers to the part from the entrance of the cranial cavity to the optic chiasm, which is about 10mm long.

[0003] In clinical practice, some patients with intraocular tumors (such as retinoblastoma or malignant melanoma) and severe endophthalmitis cannot control their condition in the later stages and need to undergo eye removal surgery. In order to completely eliminate the impact of the affected eye on the body, it is necessary to cut as much of the optic nerve as possible (including the optic nerve part of the eyeball) to prevent tumor cells or inflammation from entering the skull along the optic nerve. When accepting donated corneas, the traditional method is to open the conjunctiva, cut the four rectus muscles, and then use curved scissors to cut the optic nerve, which can retain up to 5mm to 10mm of the retrobulbar optic nerve. In animal experiments, the same problem was encountered, and the traditional method could not collect enough optic nerve specimens.

[0004] However, in the clinical field, for patients with malignant intraocular tumors or severe endophthalmitis who need enucleation, the larger the range of optic nerve removal, the safer it is; in the experimental field, the study of optic nerve is of great significance for the diagnosis and treatment of optic nerve-related diseases. Whether more optic nerve specimens can be obtained is the key to research. However, the current traditional technology can only collect 5mm to 10mm of optic nerve connected to the eyeball, which greatly limits the breadth and accuracy of the research, and reduces the possibility of continuous tissue sectioning in the research, increasing the cost of research. The structure of the eyeball is very delicate, requiring the operating range of the tool to be precisely controlled. Every 1mm difference will greatly affect the effect of specimen collection. Summary of the invention

[0005] The purpose of the present invention is to provide an optic nerve specimen collector capable of accurately controlling the collection length of the optic nerve.

[0006] In order to achieve the above object, the present invention provides an optic nerve specimen collector, which comprises:

[0007] The body comprises a first handle and a second handle connected by a hinge, wherein the first handle comprises a first hand-held portion and a first insertion portion, and the second handle comprises a second hand-held portion and a second insertion portion, wherein the first hand-held portion and the second hand-held portion are arranged opposite to each other, and the first insertion portion and the second insertion portion are arranged opposite to each other, and the hinge is located between the first hand-held portion and the first insertion portion, and when the first insertion portion and the second insertion portion are in contact with each other, an angle is formed between the first hand-held portion and the second hand-held portion, and an eyeball bracket is connected to the free end of the second insertion portion;

[0008] The limiting assembly comprises a driving handle and an elastic member, wherein the driving handle is arc-shaped, a first end of the driving handle is rotatably connected to the first hand-held part, the elastic member is connected to the second hand-held part, and an outer arc surface of the second end of the driving handle is connected to the elastic member;

[0009] The shearing assembly comprises a linkage mechanism and a pair of scissors, wherein the scissors are located at the free end of the first insertion portion, the first end of the linkage mechanism is connected to the scissors, and the second end of the linkage mechanism is connected to the driving handle. The rotation of the driving handle can drive the linkage mechanism to move, and the movement of the linkage mechanism can drive the scissors to open and close.

[0010] In the optic nerve specimen collector as described above, the elastic member is a spring sheet, and both ends of the spring sheet are movably connected to the second hand-held part.

[0011] The optic nerve specimen collector as described above, wherein the second hand-held portion is provided with a slide groove, both ends of the spring sheet are connected with sliders, and the sliders are arranged in the slide groove and can slide along the slide groove.

[0012] The optic nerve specimen collector as described above, wherein the second end of the driving handle is connected to the spring sheet via a rivet.

[0013] The optic nerve specimen collector as described above, wherein the linkage mechanism includes a transmission rod, a first connecting rod and a second connecting rod, the first end of the transmission rod can be rotatably connected to the driving handle, the first end of the first connecting rod, the first end of the second connecting rod and the second end of the transmission rod are connected via a linkage shaft, and the second end of the first connecting rod and the second end of the second connecting rod can be rotatably connected to the two blades of the scissors respectively.

[0014] The optic nerve specimen collector as described above, wherein the first insertion portion is provided with a mounting channel, and the conductive rod is movably disposed through the mounting channel.

[0015] In the optic nerve specimen collector as described above, the free end of the first extending portion is connected to a sheath that can be sleeved on the outside of the first connecting rod and the second connecting rod.

[0016] The optic nerve specimen collector as described above, wherein the eyeball bracket is Y-shaped.

[0017] The optic nerve specimen collector as described above, wherein the free end of the first handheld part and the free end of the second handheld part are both connected with a finger ring.

[0018] The optic nerve specimen collector as described above, wherein the hinge is a pin.

[0019] Compared with the prior art, the advantages of the present invention are as follows:

[0020] The optic nerve specimen collector of the present invention can precisely control the opening distance between the first insertion part and the second insertion part by setting a limit assembly, and the operation is simple and convenient, so that the optic nerve collection length can be precisely controlled by reasonably configuring parameters according to different animal species, thereby achieving the purpose of collecting as much optic nerve tissue in the tube as possible, and by setting an elastic member, the optic nerve specimen collector can naturally return to a closed state after cutting off the optic nerve;

[0021] The optic nerve specimen collector of the present invention has an eyeball bracket in a Y shape, so that the free end of the eyeball bracket can well capture and fix the optic nerve, thereby making the operation of cutting the optic nerve simpler and more convenient without damaging the optic nerve. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following drawings are intended only to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the optic nerve specimen collector of the present invention;

[0024] Figure 2 It is a schematic diagram of the main perspective structure of the optic nerve specimen collector;

[0025] Figure 3 is a schematic diagram of the structure of the first handle;

[0026] Figure 4 yes Figure 3 A schematic diagram of the enlarged structure of the middle part A;

[0027] Figure 5 is a schematic diagram of the structure of the second handle;

[0028] Figure 6 yes Figure 5 The enlarged structural diagram of the middle B part;

[0029] Figure 7 It is a schematic diagram of the assembly structure of the limit component and the shear component;

[0030] Figure 8 yes Figure 7 The enlarged structural diagram of the middle C part;

[0031] Fig. 9 yes Figure 7 The enlarged structural diagram of the middle D part;

[0032] Fig.10 It is a structural schematic diagram of the first use state of the optic nerve specimen collector;

[0033] Fig.11 It is a structural schematic diagram of the second use state of the optic nerve specimen collector;

[0034] Fig.12 This is a schematic diagram of the structure of the optic nerve specimen collector after it slides into the eyeball;

[0035] Fig.13 yes Fig.12 The enlarged structural diagram of the middle E part;

[0036] Fig.14 This is a schematic diagram of the structure of the optic nerve specimen collector after lifting the eyeball;

[0037] Fig.15 yes Fig.14 The enlarged structural diagram of the middle F part;

[0038] Fig.16 This is a schematic diagram of the structure of the optic nerve specimen collector cutting the optic nerve;

[0039] Fig.17 yes Fig.16 Schematic diagram of the enlarged structure of the middle G part.

[0040] Description of Figure Numbers:

[0041] 10. Ontology;

[0042] 100, first handle; 110, first hand-held portion; 111, finger ring; 120, first insertion portion; 121, installation channel; 122, sheath; 130, protrusion;

[0043] 200, second handle; 210, second gripping portion; 211, slide groove; 220, second insertion portion; 230, slot; 240, eyeball bracket;

[0044] 300, hinged parts;

[0045] 400, limit assembly; 410, driving handle; 420, elastic member; 421, slider; 422, rivet;

[0046] 500, shearing assembly; 510, linkage mechanism; 511, transmission rod; 512, first connecting rod; 513, second connecting rod; 514, linkage rotating shaft; 520, scissors; 521, blade; 522, scissors shaft;

[0047] 600, optic canal; 610, optic nerve;

[0048] 700, eye socket;

[0049] 800. Eyeball. DETAILED DESCRIPTION

[0050] In order to have a clearer understanding of the technical solution, purpose and effect of the present invention, the specific implementation mode of the present invention is now described in conjunction with the accompanying drawings. Among them, the use of the adjective or adverbial modifiers "inside" and "outside" is only to facilitate the relative reference between multiple groups of terms, and does not describe any specific directional restrictions on the modified terms. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0051] like Figure 1 and Figure 2 As shown, the present invention provides an optic nerve specimen collector, which includes a body 10, a limiting component 400 and a shearing component 500, wherein:

[0052] The body 10 includes a first handle 100 and a second handle 200 connected by a hinge 300. The first handle 100 includes a first hand-held portion 110 and a first insertion portion 120. The second handle 200 includes a second hand-held portion 210 and a second insertion portion 220. The first hand-held portion 110 and the second hand-held portion 210 are arranged opposite to each other, and the first insertion portion 120 and the second insertion portion 220 are arranged opposite to each other. The first hand-held portion 110 and the second hand-held portion 210 are used for the operator to hold, and the first insertion portion 120 and the second insertion portion 220 can be inserted into the eye. The hinge 300 is located between the first hand-held portion 110 and the first insertion portion 120, that is, the first handle 100 and the second handle 200 are arranged opposite to each other. The hinge 300 is connected to the middle of the first handle 100 and the second handle 200, and when the first insertion portion 120 and the second insertion portion 220 are in contact with each other, an angle is formed between the first hand-held portion 110 and the second hand-held portion 210, and when the first hand-held portion 110 and the second hand-held portion 210 move toward each other, the first insertion portion 120 and the second insertion portion 220 are separated, and the free end of the second insertion portion 220 is connected to the eyeball bracket 240, and the surface of the eyeball bracket 240 facing away from the first handle 100 is a curved surface adapted to the eyeball, so that the eyeball bracket 240 can fit the curvature of the back of the eyeball, so that during the collection process, the eyeball bracket 240 can firmly hold the eyeball;

[0053] The limiting assembly 400 includes a driving handle 410 and an elastic member 420. The driving handle 410 is arc-shaped. The first end of the driving handle 410 can be rotatably connected to the first hand-held portion 110, and the inner arc surface of the driving handle 410 is arranged toward the first hand-held portion 110. The elastic member 420 is connected to the second hand-held portion 210. The outer arc surface of the second end of the driving handle 410 is connected to the elastic member 420. When force is applied to move the first hand-held portion 110 and the second hand-held portion 210 toward each other, the driving handle 410 will first squeeze the elastic member 420, and the first insertion portion 120 will separate from the second insertion portion 220. When the elastic member 420 is pressed When the first hand-held portion 110 and the second hand-held portion 210 are retracted to the limit, the first extending portion 120 and the second extending portion 220 are separated by a preset distance, and the force for moving the first hand-held portion 110 and the second hand-held portion 210 toward each other continues to be applied. At this time, under the limiting effect of the elastic member 420, the driving handle 410 will rotate toward the first hand-held portion 110. By adjusting the positions of the driving handle 410 and the elastic member 420, the angle between the first hand-held portion 110 and the second hand-held portion 210 can be adjusted when the first extending portion 120 and the second extending portion 220 are in close contact with each other.

[0054] The shearing assembly 500 includes a linkage mechanism 510 and a pair of scissors 520. The specific structure of the scissors 520 is the prior art and will not be described in detail herein. The scissors 520 are located at the free end of the first insertion portion 120. The first end of the linkage mechanism 510 is connected to the scissors 520, and the second end of the linkage mechanism 510 is connected to the driving handle 410. The rotation of the driving handle 410 can drive the linkage mechanism 510 to move, and the movement of the linkage mechanism 510 can drive the scissors 520 to open and close to perform the action of shearing the optic nerve. Specifically, the driving handle 410 rotates toward the first hand-held portion 110 to drive the linkage mechanism 510 to move toward the free end of the first hand-held portion 110. The movement of the linkage mechanism 510 drives the two blades 521 of the scissors 520 to close to cut the optic nerve. The driving handle 410 can rotate toward the second hand-held portion 210 under the action of the elastic member 420 and drive the linkage mechanism 510 to move toward the free end of the first insertion portion 120. The movement of the linkage mechanism 510 drives the two blades 521 of the scissors 520 to open, so as to facilitate the next cutting operation.

[0055] When using, use the eyelid opener to open the eyelids, cut the corneal limbus conjunctiva 360 degrees, separate the fascia, and cut the medial rectus muscle. Then, first change the optic nerve specimen collector from the closed state (such as Figure 1 As shown in the figure, the first hand-held portion 110 slides into the back of the eyeball from the nose side, and the eyeball bracket 240 fixes the eyeball; then force is applied to make the first hand-held portion 110 and the second hand-held portion 210 move toward each other. At this time, the first insertion portion 120 and the second insertion portion 220 are separated, and the driving handle 410 squeezes the elastic member 420. When the elastic member 420 is compressed to the limit, the first hand-held portion 110 and the second hand-held portion 210 can no longer move toward each other, and the first insertion portion 120 and the second insertion portion 220 are separated by a preset distance (as shown in the figure). Fig.10 As shown in FIG. 1 , in this embodiment, the preset distance is 20 mm, and the force for moving the first hand-held portion 110 and the second hand-held portion 210 toward each other is continuously applied. At this time, under the limiting effect of the elastic member 420, the driving handle 410 rotates toward the first hand-held portion 110, and the rotation of the driving handle 410 drives the linkage mechanism 510 to move toward the free end of the first hand-held portion 110. The movement of the linkage mechanism 510 drives the two blades 521 of the scissors 520 to close (as shown in FIG. 1 ). Fig.11 As shown), the optic nerve is cut off, and finally, the force is stopped, and the driving handle 410 is reset under the elastic force of the elastic member 420. The reset of the driving handle 410 drives the first hand-held part 110 and the second hand-held part 210 to reset, that is, the optic nerve specimen collector can naturally return to a closed state.

[0056] Among them, the specific operation steps of opening the eyelid with the eyelid speculum, cutting the corneal limbus conjunctiva 360 degrees, separating the fascia, and cutting the medial rectus muscle are existing technologies and will not be repeated here.

[0057] The optic nerve specimen collector of the present invention, by providing a limit assembly 400, enables the opening distance between the first insertion portion 120 and the second insertion portion 220 to be precisely controlled, and the operation is simple and convenient, so that the parameters can be reasonably configured according to different animal species to precisely control the optic nerve collection length, thereby achieving the purpose of collecting as much optic nerve tissue in the tube as possible, and by providing an elastic member 420, the optic nerve specimen collector can naturally return to a closed state after cutting off the optic nerve.

[0058] Further, if Figure 5 and Figure 6 As shown, the eyeball bracket 240 is Y-shaped, so that the free end of the eyeball bracket 240 can well capture and fix the optic nerve, thereby making the operation of cutting the optic nerve simpler and more convenient.

[0059] Further, if Figure 3 and Figure 5 As shown, the free end of the first hand-held part 110 and the free end of the second hand-held part 210 are both connected to a finger ring 111. The operator holds the first hand-held part 110 and the second hand-held part 210 through the finger ring 111, so that the operation of applying force to the first hand-held part 110 and the second hand-held part 210 to drive the first hand-held part 110 and the second hand-held part 210 to move toward each other becomes simple and convenient.

[0060] Further, if Figure 1 As shown, the hinge 300 is a pin shaft. Specifically, a protrusion 130 is provided on the first handle 100, and a slot 230 is provided on the second handle 200. The protrusion 130 is inserted into the slot 230 and can rotate relative to the slot 230. The pin shaft penetrates the protrusion 130 and the slot 230 to connect the first handle 100 with the second handle 200.

[0061] Of course, the hinge 300 may also be a screw, a bolt or a connecting rivet that can connect the first handle 100 and the second handle 200 and enable the first handle 100 and the second handle 200 to rotate relative to each other.

[0062] In one embodiment of the present invention, Figure 8 As shown, the elastic member 420 is a spring sheet, and both ends of the spring sheet can be movably connected to the second hand-held part 210. The spring sheet is made of steel and has good tensile stiffness and bending stiffness, thereby ensuring the service life of the optic nerve specimen collector. Of course, the elastic member 420 can also be a leaf spring.

[0063] Further, if Figure 2 and Figure 8As shown, a slide groove 211 is provided on the second hand-held part 210, and sliders 421 are connected to both ends of the spring sheet. The sliders 421 are arranged in the slide groove 211 and can slide along the slide groove 211, so that the spring sheet can move smoothly relative to the second hand-held part 210 with the rotation of the driving handle 410, thereby not affecting the rotation of the driving handle 410.

[0064] Further, if Figure 7 and Figure 8 As shown, the second end of the driving handle 410 is connected to the spring sheet through a rivet 422, so that the connection between the driving handle 410 and the spring sheet is simple and reliable.

[0065] In one embodiment of the present invention, Figure 7 and Fig. 9 As shown, the linkage mechanism 510 includes a transmission rod 511, a first connecting rod 512 and a second connecting rod 513. The first end of the transmission rod 511 is rotatably connected to the driving handle 410. Specifically, the first end of the transmission rod 511 is rotatably connected to the driving handle 410 through a transmission shaft. The first end of the first connecting rod 512, the first end of the second connecting rod 513 and the second end of the transmission rod 511 are connected through a linkage rotating shaft 514, so that the first connecting rod 512 and the second connecting rod 513 can rotate relative to the transmission rod 511. The second end of the first connecting rod 512 and the second end of the second connecting rod 513 are respectively rotatably connected to the two blades 521 of the scissors 520. Specifically, the second end of the first connecting rod 512 and the second end of the second connecting rod 513 are respectively connected to the scissors through a connecting shaft. The two blades 521 of the scissors 520 are rotatably connected, and the driving handle 410 rotates toward the first hand-held part 110 to drive the transmission rod 511 to move toward the free end of the first hand-held part 110. The movement of the transmission rod 511 drives the first connecting rod 512 and the second connecting rod 513 to move toward each other. The movement of the first connecting rod 512 and the second connecting rod 513 drives the two blades 521 of the scissors 520 to close to shear the optic nerve. The driving handle 410 rotates toward the second hand-held part 210 to drive the transmission rod 511 to move toward the free end of the first insertion part 120. The movement of the transmission rod 511 drives the first connecting rod 512 and the second connecting rod 513 to move away from each other. The movement of the first connecting rod 512 and the second connecting rod 513 drives the two blades 521 of the scissors 520 to separate, so that the scissors 520 are reset.

[0066] Further, if Figure 2 As shown, the first extension portion 120 is provided with an installation channel 121, and the conduction rod 511 can be movably arranged in the installation channel 121. The installation channel 121 can not only play a role in limiting and guiding the movement of the conduction rod 511, but also play a role in protecting the conduction rod 511, so that the conduction rod 511 can smoothly drive the scissors 520 to open and close.

[0067] Further, if Figure 3 and Figure 4 As shown, the free end of the first extension portion 120 is connected to a sheath 122 that can be sleeved on the outside of the first connecting rod 512 and the second connecting rod 513, and the scissor shaft 522 of the scissors 520 passes through the sheath 122, so that the sheath 122 can not only protect the first connecting rod 512 and the second connecting rod 513, but also limit the position of the scissors 520, so that the first connecting rod 512 and the second connecting rod 513 can smoothly drive the scissors 520 to open and close.

[0068] The following is a detailed description of the use of the optic nerve specimen collector of the present invention in conjunction with the accompanying drawings:

[0069] When using, use the eyelid opener to open the eyelids, cut the corneal limbus conjunctiva 360 degrees, separate the fascia, and cut the medial rectus muscle. Fig.12 and Fig.13 As shown, the optic nerve specimen collector is first slid from the closed state into the rear of the eyeball 800 from the nose side, and the eyeball bracket 240 is used to fix the eyeball 800, and the free end of the eyeball bracket 240 captures and fixes the optic nerve 610;

[0070] like Fig.14 and Fig.15 As shown, the first hand-held portion 110 and the second hand-held portion 210 are held by the finger ring 111, and force is applied to move the first hand-held portion 110 and the second hand-held portion 210 toward each other. At this time, the first insertion portion 120 and the second insertion portion 220 are separated, and the driving handle 410 squeezes the elastic member 420. When the elastic member 420 is compressed to the limit, that is, the elastic member 420 is tightly clamped between the outer arc surface of the driving handle 410 and the second hand-held portion 210, the first hand-held portion 110 and the second hand-held portion 210 cannot continue to move toward each other, and the first insertion portion 120 and the second insertion portion 220 are separated by 20 mm. Fig.16 and Fig.17 As shown, the force for moving the first hand-held part 110 and the second hand-held part 210 toward each other is continuously applied. At this time, under the limiting effect of the elastic member 420, the driving handle 410 rotates toward the first hand-held part 110. The rotation of the driving handle 410 drives the transmission rod 511 to move toward the free end of the first hand-held part 110. The movement of the transmission rod 511 drives the first connecting rod 512 and the second connecting rod 513 to move toward each other. Under the limiting and guiding effect of the sheath 122, the movement of the first connecting rod 512 and the second connecting rod 513 drives the two blades 5211 of the scissors 520 to close, so as to shear the optic nerve 610 of a preset length (20 mm) from the eyeball 800 to the eye socket 700 of the optic nerve canal 600.

[0071] Finally, the force is stopped, and the driving handle 410 will reset under the elastic force of the elastic member 420. The reset of the driving handle 410 will drive the first handheld part 110, the second handheld part 210 and the shearing assembly 500 to reset, that is, the optic nerve specimen collector naturally returns to the closed state.

[0072] It should be noted that, except for the spring sheet which is made of steel, all other components of the optic nerve specimen collector of the present invention are made of nickel-chromium alloy or titanium alloy.

[0073] In summary, the optic nerve specimen collector of the present invention can accurately control the opening distance between the first insertion part and the second insertion part by setting a limit assembly, and the operation is simple and convenient, so that the parameters can be reasonably configured according to different animal species to accurately control the optic nerve collection length, thereby achieving the purpose of collecting as much optic nerve tissue in the tube as possible, and by setting an elastic member, the optic nerve specimen collector can naturally return to a closed state after cutting off the optic nerve;

[0074] The optic nerve specimen collector of the present invention has an eyeball bracket in a Y shape, so that the free end of the eyeball bracket can well capture and fix the optic nerve, thereby making the operation of cutting the optic nerve simpler and more convenient without damaging the optic nerve.

[0075] The above description is only an illustrative specific implementation mode of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any technician in the field without departing from the concept and principle of the present invention should fall within the scope of protection of the present invention. It should also be noted that the various components of the present invention are not limited to the above-mentioned overall application. The various technical features described in the specification of the present invention can be selected one by one or multiple ones can be selected and used in combination according to actual needs. Therefore, the present invention naturally covers other combinations and specific applications related to the invention point of this case.

Claims

1. An optic nerve specimen collector, characterized in that: The optic nerve specimen collector comprises: The body comprises a first handle and a second handle connected by a hinge, wherein the first handle comprises a first hand-held portion and a first insertion portion, and the second handle comprises a second hand-held portion and a second insertion portion, wherein the first hand-held portion and the second hand-held portion are arranged opposite to each other, and the first insertion portion and the second insertion portion are arranged opposite to each other, and the hinge is located between the first hand-held portion and the first insertion portion, and when the first insertion portion and the second insertion portion are in contact with each other, an angle is formed between the first hand-held portion and the second hand-held portion, and an eyeball bracket is connected to the free end of the second insertion portion; The limiting assembly comprises a driving handle and an elastic member, wherein the driving handle is arc-shaped, an end of the driving handle close to the first insertion portion constitutes a first end, and an end of the driving handle away from the first insertion portion constitutes a second end; the first end of the driving handle can be rotatably connected to the first hand-held portion, the elastic member is connected to the second hand-held portion, and the outer arc surface of the driving handle is connected to the elastic member at a position close to the second end; A shearing assembly, comprising a linkage mechanism and a pair of scissors, wherein the pair of scissors is located at the free end of the first insertion portion, the first end of the linkage mechanism is connected to the pair of scissors, the second end of the linkage mechanism is connected to the driving handle, the rotation of the driving handle can drive the linkage mechanism to move, and the movement of the linkage mechanism can drive the pair of scissors to open and close; The elastic member is a spring sheet, and both ends of the spring sheet are movably connected to the second hand-held part; a slide groove is provided on the second hand-held part, and both ends of the spring sheet are connected to a slider, and the slider is arranged in the slide groove and can slide along the slide groove; The linkage mechanism includes a transmission rod, a first connecting rod and a second connecting rod. The first end of the transmission rod is rotatably connected to the driving handle. The first end of the first connecting rod, the first end of the second connecting rod and the second end of the transmission rod are connected through a linkage rotating shaft. The second end of the first connecting rod and the second end of the second connecting rod are respectively rotatably connected to the two blades of the scissors.

2. The optic nerve specimen collector according to claim 1, characterized in that: The second end of the driving handle is connected to the spring sheet through a rivet.

3. The optic nerve specimen collector according to claim 1, characterized in that: The first extending portion is provided with a mounting channel, and the conducting rod is movably arranged through the mounting channel.

4. The optic nerve specimen collector according to claim 1, characterized in that: The free end of the first extending portion is connected with a sheath which can be sleeved on the outside of the first connecting rod and the second connecting rod.

5. The optic nerve specimen collector according to any one of claims 1 to 4, characterized in that: The eyeball bracket is in a Y shape.

6. The optic nerve specimen collector according to any one of claims 1 to 4, characterized in that: The free end of the first hand-held part and the free end of the second hand-held part are both connected with a finger ring.

7. The optic nerve specimen collector according to any one of claims 1 to 4, characterized in that: The hinged member is a pin.

Images