Ophthalmic internal limiting membrane plugging device

Abstract

The application relates to the technical field of ophthalmic surgical instruments, in particular to an ophthalmic internal limiting membrane tampon, which can protectively and automatically rebound when the tampon is operated with excessive force during a'mechanical' tampon process, so as to prevent iatrogenic retinal pigment epithelial layer damage at the bottom of a macular hole. The device comprises a sleeve-shaped handle, a spring and a probe are arranged in the handle along the length direction of the handle; the probe comprises a probe main body and a probe base, and the two ends of the probe base are connected with the spring and the probe main body respectively; an outer thread is arranged on the outer side of the probe base, and a tensioning wheel is arranged on the handle; the outer thread is divided into at least three thread regions arranged along the length direction of the probe base, including a first thread region, a second thread region and a third thread region; the threads in the first thread region, the second thread region and the third thread region correspond to first threads, second threads and third threads respectively; and the diameters of the second threads are all larger than the diameters of the first threads and the third threads.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ophthalmic surgical instruments, in particular to an intraocular limiting membrane tampon. BACKGROUND

[0002] Professor Ma Jin's team at Zhongshan Ophthalmic Center of Sun Yat-sen University published a research paper in the American Journal, which first used a modified internal limiting membrane flap tamponing surgery to treat super-large diameter macular holes and achieved satisfactory results. Through long-term continuous dynamic follow-up, it revealed the unique healing rules of macular visual function and morphology after surgery, and clarified the surgical value and applicability of the modified internal limiting membrane flap tamponing technique in treating super-large diameter macular holes. (Reference: Yu X, Li X, Xing Y, Ma J. Long-Term Continuous Assessment of Internal Limiting Membrane Filling Induced Super-Large Macular Hole Healing. Am J Ophthalmol. 2022 Aug;240:276-284. doi: 10.1016 / j.ajo.2022.03.030. Epub 2022 Apr 2. PMID: 35381202.)

[0003] Currently, internal limiting membrane tamponing surgery is widely used in the treatment of super-large macular holes. However, due to the delicate nature of the surgery, it is difficult for the surgeon to control the force during the "mechanical" tamponing process, which can easily lead to iatrogenic retinal pigment epithelial layer damage at the bottom of the macular hole. This is the main problem that has been questioned. Therefore, there is an urgent need for a tool for intraocular limiting membrane tamponing to improve the surgical cure rate of super-large macular holes and control the tamponing force, so that the surgeon can protectively and automatically rebound when the tamponing force is too large during the "mechanical" tamponing process. SUMMARY

[0004] The purpose of the present application is to solve the problem of iatrogenic retinal pigment epithelial layer damage at the bottom of the macular hole when the internal limiting membrane tamponing device in the prior art is operated with excessive force. The present application provides an intraocular limiting membrane tamponing device that can control the tamponing force, so that the surgeon can protectively and automatically rebound when the tamponing force is too large during the "mechanical" tamponing process, preventing iatrogenic retinal pigment epithelial layer damage at the bottom of the macular hole.

[0005] In order to solve the problems existing in the prior art, the present application adopts the following technical solutions:

[0006] The intraocular limiting membrane tamponing device comprises a sleeve-shaped handle, a spring and a probe are arranged in the handle along the length direction of the handle;

[0007] The probe comprises a probe body and a probe base, both ends of the probe base are coaxially connected with the spring and the probe body respectively, and the probe body can be extended out of the handle at the open end of the handle;

[0008] The outer side of the probe base is provided with external threads, and the handle is provided with a tensioning wheel, and the tensioning wheel is circumferentially provided with teeth engaged with the external threads;

[0009] The external threads are divided into at least three thread regions arranged along the length direction of the probe base, the at least three thread regions comprise a first thread region, a second thread region and a third thread region, and the third thread region is close to the probe body; the external threads in the first thread region, the second thread region and the third thread region correspond to first threads, second threads and third threads, and the diameter of the second threads is greater than the diameter of the first threads and the diameter of the third threads;

[0010] Using the ophthalmic internal limiting membrane tamponade device for tamponade, after the tamponade is completed, the probe body is subjected to the back-pushing force of the internal limiting membrane tissue, the probe base moves in the handle, the teeth are engaged with the threads of different diameters, and the friction force between the different threads and the teeth is adjusted to control the tamponade intensity.

[0011] As an improvement of the technical scheme of the ophthalmic internal limiting membrane tamponade device, the tensioning wheel is in the first thread region as the initial position, and the teeth are engaged with the first threads;

[0012] Using the ophthalmic internal limiting membrane tamponade device for tamponade;

[0013] After the tamponade is completed, the probe body is subjected to the back-pushing force of the internal limiting membrane tissue, the probe body drives the probe base to move in the handle, the spring is compressed under stress, the teeth are sequentially engaged with the first threads, the second threads and the third threads, and finally the tensioning wheel is in the third thread region;

[0014] When the ophthalmic internal limiting membrane tamponade device returns to the original state: the tensioning wheel is manually rotated, the tensioning wheel passes through the second thread region from the third thread region to return to the first thread region, at this time, the spring returns to the original state, and the tensioning wheel returns to the initial position.

[0015] As an improvement of the technical scheme of the ophthalmic internal limiting membrane tamponade device, the diameter of the first threads is the same as that of the third threads, and the diameter of the second threads is twice the diameter of the first threads or the third threads.

[0016] As an improvement of the technical scheme of the ophthalmic internal limiting membrane tampon of the application, the length of the second screw thread region is shorter than the length of the first screw thread region or the length of the third screw thread region.

[0017] As an improvement of the technical scheme of the ophthalmic internal limiting membrane tampon of the application, the front end of the probe body is semispherical, and the front part of the probe body is provided with a plurality of protruding components.

[0018] As an improvement of the technical scheme of the ophthalmic internal limiting membrane tampon of the application, the front end of the probe body and the protruding components are made of soft material.

[0019] As an improvement of the technical scheme of the ophthalmic internal limiting membrane tampon of the application, the handle is provided with a fixing part for fixing the tensioning wheel, and the fixing part is arranged along the length direction of the handle.

[0020] The two fixing parts are oppositely arranged, and each of the fixing parts is provided with a limiting hole, and the positions of the two limiting holes are opposite.

[0021] The limiting hole is a vertically arranged rectangular limiting hole, a rod passes through the two limiting holes and the tensioning wheel, the tensioning wheel can rotate around the rod, and the rod can move up and down along the limiting hole.

[0022] As an improvement of the technical scheme of the ophthalmic internal limiting membrane tampon of the application, the probe body is made of stainless steel.

[0023] As an improvement of the technical scheme of the ophthalmic internal limiting membrane tampon of the application, the probe seat is rotated by the engagement of the teeth of the tensioning wheel and the external screw thread, so as to drive the probe body to extend or retract relative to the handle.

[0024] The beneficial effects of the application are as follows:

[0025] In the air-liquid exchange state during the operation, the surface tension of the air is used to move the internal limiting membrane to the rhexis, so as to truly achieve the operation of non-invasive internal limiting membrane tamponing, avoid the scar healing after the internal limiting membrane tamponing, and the mechanical and traumatic operation of manual tamponing during the operation, which can cause the iatrogenic retinal pigment epithelial layer damage at the bottom of the macular hole. When the internal limiting membrane tampon is used in the ophthalmic operation, the tamponing purpose can be achieved, the tamponing force can be controlled, and the internal retinal tissue can be prevented from being damaged due to excessive force. The teeth and the screw thread with different diameters are engaged, the friction force between the different screw threads and the teeth is adjusted, the tamponing force is controlled, and the tamponer is protected and automatically bounced back when the operation force is too large in the mechanical tamponing process. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0027] Figure 2 for Figure 1 Enlarged view at point A, an enlarged view of the end of the probe body in this invention;

[0028] Figure 3 This is a flowchart of the state changes of the present invention, wherein a is the initial state; b is the state of the packer retracting under the thrust of the inner membrane; c is the state of force release when the maximum resistance is reached; and d is the state of returning to the initial state by manually moving the gear.

[0029] Figure 4 This is a schematic diagram of the probe holder in this invention.

[0030] Explanation of reference numerals in the attached drawings: 1-Handle; 2-Spring; 3-Probe body; 4-External thread; 4a-First thread; 4b-Second thread; 4c-Third thread; 5-Tensioning wheel; 6-Tooth; 7-Probe seat; 8-Protruding part; 9-Fixing part; 10-Limiting hole; 11-Rod; A1-Friction between the first thread and the tooth; B1-Friction between the second thread and the tooth; C1-Friction between the third thread and the tooth; D1-Compression force of the spring; E1-Reverse force of the internal limiting membrane tissue; F1-External force for moving the tensioning wheel; H1-First thread area; H2-Second thread area; H3-Third thread area. Detailed Implementation

[0031] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments.

[0032] like Figures 1 to 4 As shown, the ophthalmic internal limiting membrane tampon includes a sleeve-shaped handle 1, and a spring 2 and a probe are disposed inside the handle 1 along its length.

[0033] The probe includes a probe body 3 and a probe base 7. The two ends of the probe base 7 are coaxially connected to a spring 2 and a probe body 3, respectively, and the probe body 3 can extend out of the handle 1 through the opening end of the handle 1.

[0034] The probe holder 7 has an external thread 4 on its outer side, and a tension wheel 5 is provided on the handle 1. The tension wheel 5 has teeth 6 that mesh with the external thread 4 in the circumferential direction.

[0035] The outer thread 4 is divided into at least three thread regions arranged along the length direction of the probe base 7, including a first thread region H1, a second thread region H2 and a third thread region H3, and the third thread region H3 is close to the probe body 3; the outer thread 4 in the first thread region H1, the second thread region H2 and the third thread region H3 corresponds to a first thread 4a, a second thread 4b and a third thread 4c, and the diameter of the second thread 4b is greater than the diameter of the first thread 4a and the diameter of the third thread 4c;

[0036] After filling is completed, the probe body 3 is subjected to a back pushing force E1 of the internal limiting membrane tissue, the probe base 7 moves in the handle 1, the teeth 6 are engaged with the threads of different diameters, and the friction force between the different threads and the teeth 6 is adjusted to control the filling force.

[0037] In the application, when the probe body 3 is subjected to an external force for pressing or the rotation of the tensioning wheel 5 is manually driven or pushed, the probe base 7 can move in the handle 1, so that the probe body 3 can be extended or retracted relative to the handle 1, and the force of the probe body 3 can be adjusted by the engagement of the teeth 6 of the tensioning wheel 5 with the threads of different diameters in different thread regions.

[0038] That is, after filling is completed, the probe body 3 is subjected to a back pushing force of the internal limiting membrane tissue, the teeth 6 are engaged with the threads of different diameters, the friction force between the different threads and the teeth 6 is adjusted, the filling force can be controlled, and the ophthalmic internal limiting membrane filler can be automatically bounced back when the operation force is too large.

[0039] In detail, in the application, the tensioning wheel 5 is in the first thread region H1 as an initial position, the teeth 6 are engaged with the first thread 4a, the ophthalmic internal limiting membrane filler is used for filling, and the filling is completed.

[0040] After filling is completed, the probe body 3 is subjected to a back pushing force E1 of the internal limiting membrane tissue, the probe body 3 drives the probe base 7 to move in the handle 1, the spring 2 is compressed under force, the teeth 6 are engaged with the first thread 4a, the second thread 4b and the third thread 4c in turn, and finally the tensioning wheel 5 is in the third thread region H3.

[0041] When the ophthalmic internal limiting membrane filler returns to the original state, the tensioning wheel 5 is manually driven to pass through the second thread region H2 from the third thread region H3 and return to the first thread region H1, at this time, the spring 2 returns to the original state under the compression force D1 of the spring, and the tensioning wheel 5 returns to the initial position.

[0042] More specifically, when the teeth 6 of the tensioner 5 engage with the screw thread of a relatively large diameter, the engagement rotation is relatively strong, i.e., the friction force is relatively large, and the rotation is relatively difficult; conversely, when the teeth 6 of the tensioner 5 engage with the screw thread of a relatively small diameter, the engagement rotation is relatively weak, i.e., the friction force is relatively small, and the rotation is relatively easy.

[0043] In the present application, the diameter of the second screw thread 4b in the second screw thread region H2 is larger than the diameter of the first screw thread 4a in the first screw thread region H1, and larger than the diameter of the third screw thread 4c in the third screw thread region H3. That is, the friction force A1 of the first screw thread and the teeth is smaller than the friction force B1 of the second screw thread and the teeth, and the friction force C1 of the third screw thread and the teeth is smaller than the friction force B1 of the second screw thread and the teeth.

[0044] That is, when the teeth 6 of the tensioner 5 are switched from engaging with the first screw thread 4a or from engaging with the third screw thread 4c to engaging with the second screw thread 4b, the friction force between the external thread 4 and the teeth 6 gradually increases; conversely, when the teeth 6 of the tensioner 5 are switched from engaging with the second screw thread 4b to engaging with the first screw thread 4a or from engaging with the third screw thread 4c, the friction force between the external thread 4 and the teeth 6 gradually decreases.

[0045] In addition, in the present application, the probe holder 7 rotates by engaging the teeth 6 of the tensioner 5 with the external thread 4, achieving the extension or retraction of the probe body 3 relative to the handle 1. That is, in the present application, the two ends of the probe holder 7 are coaxially connected with the spring 2 and the probe body 3, respectively. Among them, the retraction of the probe body 3 relative to the handle 1 is achieved by the compression deformation of the spring 2 when the probe body 3 is pressed by an external force and moves the probe holder 7; when the probe body 3 extends relative to the handle 1, the external force of the probe body 3 is mainly eliminated, the spring 2 returns to its original state, the spring 2 pushes the probe holder 7 to move, the probe holder 7 moves the probe body 3, and the probe body 3 extends relative to the handle 1, or the probe body 3 returns to its original state.

[0046] At the same time, when the ophthalmic internal limiting membrane tamponade device restores to the original state, because the diameter of the second thread 4b in the second thread region H2 is larger than the diameter of the first thread 4a in the first thread region H1 and larger than the diameter of the third thread 4c in the third thread region H3, when the teeth 6 of the tensioning wheel 5 pass through the second thread region H2 from the state of engaging with the third thread 4c and return to the state of engaging with the first thread 4a, if the compression force D1 of the spring is insufficient, the tensioning wheel 5 can be slightly pushed manually, that is, an external force F1 for pushing the tensioning wheel is applied to the tensioning wheel 5, so as to supplement the insufficient compression force D1 of the spring, so that the tensioning wheel 5 crosses the second thread region H2 and returns to the first thread region H1, and then the probe body 3 restores to the original state.

[0047] As an embodiment of the present application, in the present application, the handle 1 is placed horizontally, the open end of the handle 1 is the left end of the handle 1, and the closed end of the handle 1 is the right end of the handle 1.

[0048] In the handle 1, the spring 2, the probe seat 7 and the probe body 3 are sequentially connected from right to left along the length direction of the handle 1; when the probe moves to the right, the spring 2 is compressed under force; when the spring 2 restores to the original state, the whole probe moves to the left.

[0049] In the present application, the external thread 4 on the probe seat 7 is sequentially the first thread region H1, the second thread region H2 and the third thread region H3 from right to left, and the tensioning wheel 5 is in the initial position in the first thread region H1, at this time, the teeth 6 of the tensioning wheel 5 engage with the first thread 4a.

[0050] Then the ophthalmic internal limiting membrane tamponade device of the present application is used for tamponade.

[0051] After the tamponade is completed, the probe body 3 is pushed by the back-pushing force E1 of the internal limiting membrane tissue, the back-pushing force E1 of the internal limiting membrane tissue pushes the probe body 3 from left to right, the probe body 3 moves to the right under force and drives the probe seat 7 to move to the right, the movement of the probe seat 7 to the right causes the spring 2 to be compressed and deformed under force. At the same time, the teeth 6 of the tensioning wheel 5 engage with the first thread 4a in the first thread region H1, because the probe seat 7 moves to the right, the tensioning wheel 5 gradually passes through the second thread region H2 from the first thread region H1 and enters the third thread region H3, that is, the teeth 6 of the tensioning wheel 5 sequentially engage with the first thread 4a, the second thread 4b and the third thread 4c.

[0052] Moreover, since the diameters of the second screw thread 4b are all greater than the diameters of the first screw thread 4a and the third screw thread 4c, the friction between the outer screw thread 4 and the teeth 6 gradually increases when the teeth 6 of the tensioning wheel 5 are switched from the state of engaging with the first screw thread 4a to the state of engaging with the second screw thread 4b, and the gradually increased friction suddenly decreases when the teeth 6 of the tensioning wheel 5 are switched from the state of engaging with the second screw thread 4b to the state of engaging with the third screw thread 4c, which can be manifested as the tensioning wheel 5 rotating faster, so as to make the medical staff know that the tamponade is completed and the tamponade force gradually increases, and at this time, the internal retinal tissue can be prevented from being damaged due to excessive force.

[0053] The present application uses the surface tension of air in the state of gas-liquid exchange in operation, moves the internal limiting membrane naturally into the hole, and truly achieves the operation of non-invasive internal limiting membrane tamponade, avoids the possible scar healing after internal limiting membrane tamponade and the mechanical traumatic operation of manual tamponade in operation, and causes the occurrence of iatrogenic retinal pigment epithelial layer damage at the bottom of the macular hole. The present application uses the surface tension of air in the state of gas-liquid exchange in operation, moves the internal limiting membrane naturally into the hole, and truly achieves the operation of non-invasive internal limiting membrane tamponade, avoids the possible scar healing after internal limiting membrane tamponade and the mechanical traumatic operation of manual tamponade in operation, and causes the occurrence of iatrogenic retinal pigment epithelial layer damage at the bottom of the macular hole.

[0054] After the tamponade is completed, the probe body 3 of the present application needs to be restored to its original state. The probe body 3 of the present application is removed from the internal limiting membrane tissue, at this time, the tension wheel 5 is in the third thread region H3, that is, the teeth 6 of the tension wheel 5 are engaged with the third thread 4c. Since the probe body 3 is mainly relied on the top pressure of the internal limiting membrane tissue when it is extended relative to the handle 1, when the top pressure of the internal limiting membrane tissue from left to right is removed, the spring 2 loses the top pressure force, the spring 2 is restored to its original state, the spring 2 pushes the probe seat 7 to move from right to left in the handle 1, the movement of the probe seat 7 drives the probe body 3 to move left, the probe body 3 is extended relative to the handle 1, or the probe body 3 is restored to its original state. At the same time, when the ophthalmic internal limiting membrane tamponade device is restored to its original state, since the diameter of the second thread 4b in the second thread region H2 is larger than the diameter of the third thread 4c in the third thread region H3, the compression force D1 of the spring is insufficient, the teeth 6 of the tension wheel 5 cannot be disengaged from the third thread 4c, pass through the second thread region H2, and return to the state of being engaged with the first thread 4a. That is, when the teeth 6 of the tension wheel 5 are engaged with the third thread 4c, pass through the second thread region H2, and return to the state of being engaged with the first thread 4a, if the compression force D1 of the spring is insufficient, the teeth 6 of the tension wheel 5 can be slightly manually pushed to supplement the insufficient compression force D1 of the spring, so that the tension wheel 5 can pass through the second thread region H2 and return to the first thread region H1, and then the probe body 3 is restored to its original state.

[0055] In some embodiments of the present application, the diameters of the first thread 4a and the third thread 4c are the same, and the diameter of the second thread 4b is twice the diameter of the first thread 4a or the third thread 4c. This can avoid the teeth 6 of the tension wheel 5 from easily slipping relative to the rotation, and can also avoid the difficulty in rotating due to the large height difference between the diameters of the adjacent threads.

[0056] In some embodiments of the present application, the length of the second thread region H2 is shorter than the length of the first thread region H1 or the length of the third thread region H3. Since the diameters of the second thread 4b in the second thread region H2 are larger than the diameters of the first thread 4a in the first thread region H1 and the diameters of the third thread 4c in the third thread region H3, this setting is to adjust the friction between the teeth 6 and the first thread 4a, the second thread 4b and the third thread 4c. If the length of the second thread region H2 is too long, the time of the teeth 6 engaging with the second thread 4b will be longer, which can easily cause the internal limiting membrane tissue to have insufficient top pressure to move the probe body 3 and the probe seat 7.

[0057] In some embodiments of the present application, the front end of the probe body 3 is semispherical, and the front part of the probe body 3 is provided with a plurality of protruding parts 8. Preferably, the front end of the probe body 3 and the protruding parts 8 are both made of soft material. Under the action of the plurality of protruding parts 8, the plugging effect of the internal limiting membrane is more significant, and the friction between the protruding parts 8 and the eye is also increased. Moreover, since the front end of the probe body 3 and the protruding parts 8 are both made of soft material, the rigidity of the end of the probe body 3 is reduced, and the situation of injuring the eye is avoided.

[0058] In some embodiments of the present application, the probe body 3 is made of stainless steel, which ensures the strength of the probe body 3.

[0059] In some embodiments of the present application, the handle 1 is provided with a fixing part 9 for fixing the tensioning wheel 5, and the fixing part 9 is arranged along the length direction of the handle 1; two fixing parts 9 are oppositely arranged, and each fixing part 9 is provided with a limiting hole 10, and the positions of the two limiting holes 10 are opposite; the limiting hole 10 is a vertically arranged rectangular limiting hole 10, a rod 11 passes through the two limiting holes 10 and the tensioning wheel 5, the tensioning wheel 5 can rotate around the rod 11, and the rod 11 can move up and down in the limiting hole 10. When the tensioning wheel 5 is pressed up and down during use, the tensioning wheel 5 can not only have a little space between the teeth 6 and the external thread 4 under the action of the limiting hole 10, so that the tensioning wheel 5 can move up and down slightly, but also can adjust the friction between the teeth 6 and the first screw thread 4a, the second screw thread 4b or the third screw thread 4c, and facilitate the relative movement and rotation between the teeth 6 and the external thread 4 when the teeth 6 of the tensioning wheel 5 are engaged with the external thread 4.

[0060] Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

Claims

1. An ophthalmic internal limiting membrane tampon, comprising a sleeve-shaped handle, characterized in that, Along the length of the handle, a spring and a probe are provided inside the handle; The probe includes a probe body and a probe base. The spring and the probe body are coaxially connected to both ends of the probe base, and the probe body can extend out of the handle from the open end of the handle. The probe holder has an external thread on its outer side, and the handle has a tension wheel with teeth on its circumference that mesh with the external thread. The external thread is divided into at least three threaded regions arranged along the length of the probe holder. The at least three threaded regions include a first threaded region, a second threaded region, and a third threaded region. The third threaded region is close to the probe body. The external threads in the first threaded region, the second threaded region, and the third threaded region are respectively first threaded, second threaded, and third threaded, and the major diameter of the second threaded region is larger than the major diameter of the first threaded region and the major diameter of the third threaded region. When the ophthalmic internal limiting membrane tampon is used for tamponade, after tamponade is completed, the probe body is pushed back by the internal limiting membrane tissue, the probe seat moves in the handle, and the teeth mesh with threads of different diameters, thereby adjusting the friction between the threads and the teeth to control the tamponade force.

2. The ophthalmic internal limiting membrane tampon according to claim 1, characterized in that, With the tensioner wheel in the first threaded region as the initial position, the teeth engage with the first threaded tooth; The ophthalmic internal limiting membrane tampon was used for packing; After the filling is completed, the probe body is pushed back by the internal limiting membrane tissue. The probe body drives the probe seat to move in the handle. The spring is compressed. The teeth mesh with the first threaded tooth, the second threaded tooth and the third threaded tooth in sequence, and finally the tension wheel is in the third threaded tooth area. When the ophthalmic internal limiting membrane tampon returns to its original state: the tension wheel is manually turned, and the tension wheel returns from the third threaded area, through the second threaded area, back to the first threaded area. At this time, the spring returns to its original state, and the tension wheel returns to the initial position.

3. The ophthalmic internal limiting membrane tampon according to claim 1, characterized in that, The first thread and the third thread have the same major diameter, and the major diameter of the second thread is twice that of the first thread or the third thread.

4. The ophthalmic internal limiting membrane tampon according to claim 1, characterized in that, The length of the second threaded region is shorter than the length of the first threaded region or the length of the third threaded region.

5. The ophthalmic internal limiting membrane tampon according to claim 1, characterized in that, The front end of the probe body is hemispherical, and the front part of the probe body is provided with multiple protruding parts.

6. The ophthalmic internal limiting membrane tampon according to claim 5, characterized in that, The front end of the probe body and the protruding part are both made of soft material.

7. The ophthalmic internal limiting membrane tampon according to claim 1, characterized in that, The handle is provided with a fixing part for fixing the tension wheel, and the fixing part is arranged along the length direction of the handle; The two fixing parts are arranged opposite to each other, and each fixing part is provided with a limiting hole, and the two limiting holes are positioned opposite each other; The limiting hole is a vertically arranged rectangular limiting hole. The rod passes through two of the limiting holes and the tensioning wheel. The tensioning wheel can rotate around the rod, and the rod can move up and down along the limiting hole.

8. The ophthalmic internal limiting membrane tampon according to claim 1, characterized in that, The probe body is made of stainless steel.

9. The ophthalmic internal limiting membrane tampon according to claim 1, characterized in that, The probe holder rotates by meshing the teeth of the tension wheel with the external thread, thereby causing the probe body to extend or retract relative to the handle.

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