Ciliary body positioning device

By designing a ciliary body positioning device, the problem of ciliary body positioning in ophthalmic radiofrequency ablation equipment was solved, achieving precise positioning and simplified operation, and improving the accuracy and safety of ciliary body radiofrequency ablation.

CN223900894UActive Publication Date: 2026-02-13THE EYE HOSPITAL OF WENZHOU MEDICAL UNIVERSITY
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Patent Information

Application Number
CN202423148181.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-19
Publication Date
2026-02-13
Estimated Expiration
2034-12-19

AI Technical Summary

Technical Problem

In existing technologies, ophthalmic radiofrequency ablation devices have difficulty accurately locating the ciliary body when performing radiofrequency ablation on it, requiring the use of tools such as biological ultrasound microscopes, which makes the operation complex and not safe enough.

Method used

A ciliary body positioning device is designed, including a positioning body and a puncture part. The positioning body has an arc surface that is adapted to the eyeball and can be applied to the surface of the eyeball. There is a positioning distance between the positioning part and the puncture part to assist ophthalmic radiofrequency ablation electrodes in accurately positioning the ciliary body.

Benefits of technology

It improves the accuracy of ciliary body radiofrequency ablation, simplifies the operation process, reduces the risk of damage to the eyeball, and improves the safety and efficiency of treatment.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses a ciliary body positioning device which is used for positioning the position of a ciliary body on the ocular surface and facilitating radiofrequency ablation of a radiofrequency ablation electrode for the ciliary body in the ophthalmology department. The radiofrequency ablation electrode for the ophthalmology department comprises a handle part, an adjusting sleeve and an electrode needle, the adjusting sleeve is arranged on the handle part, and the needle tip of the electrode needle is exposed out of the adjusting sleeve; the ciliary body positioning device comprises a positioning body, and one side of the positioning body is provided with an arc surface matched with an eyeball, so that the positioning body can be attached to the surface of the eyeball; the positioning body is provided with a positioning part and a puncture part, and at least one part of the positioning part is in a circular arc shape matched with the eye sclera edge; the adjusting sleeve can penetrate through the puncture part; one of the positioning part and the puncture part is arranged around the other one, so that at least one positioning distance is formed between the positioning part and the puncture part. The ciliary body positioning device can position the position of the ciliary body on the ocular surface, so that the radiofrequency ablation electrode for the ophthalmology department can conveniently find a proper ablation position, and the ablation precision is improved.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical equipment, in particular to a ciliary body positioning device. BACKGROUND

[0002] Radiofrequency ablation technology mainly implements ablation through the thermal effect on the organism. When radiofrequency current flows through the human body tissue, the water molecules with polarity in the human body tissue move at high speed due to the rapid change of electromagnetic field, heat is generated (i.e. endogenous heat effect), which causes the water inside and outside the cells to evaporate, dry, shrink and fall off, resulting in aseptic necrosis, so as to achieve the purpose of treatment.

[0003] The eye has a smaller tissue structure, and has higher requirements for the electrode of radiofrequency ablation, ablation accuracy, clinical operability, treatment safety and the like. The ophthalmic radiofrequency ablation equipment can accurately perform radiofrequency ablation on the eye tissue, and can treat eye diseases such as glaucoma, and can make the clinical operation more convenient and safer.

[0004] However, the ophthalmic radiofrequency ablation equipment needs to be matched with a radiofrequency ablation electrode. For example, when radiofrequency ablation is performed on the ciliary body, a matched ciliary body ablation electrode is needed. Since the ciliary body is located inside the eyeball and cannot be directly seen, in order to accurately position the ciliary body ablation electrode to the ciliary body, the position of the ciliary body needs to be confirmed by means of an ultrasound biomicroscopy (UBM) and the like, and a suitable positioning tool is needed to facilitate the operator to find the appropriate ablation position during the operation. Therefore, it is urgent to develop a ciliary body positioning device specially used for ophthalmic ciliary body radiofrequency ablation. CONTENT OF THE UTILITY MODEL

[0005] To solve the above technical problems, the present application provides a ciliary body positioning device for positioning the position of the ciliary body on the eye surface, assisting the ophthalmic radiofrequency ablation electrode in performing radiofrequency ablation on the ciliary body. The ophthalmic radiofrequency ablation electrode comprises a handle part, an adjusting sleeve and an electrode needle. The adjusting sleeve is arranged on the handle part, the electrode needle is arranged in the adjusting sleeve, and the needle tip of the electrode needle is exposed outside the adjusting sleeve. The ciliary body positioning device comprises a positioning body. One side of the positioning body has an arc surface matched with the eyeball, so that the positioning body can be attached to the surface of the eyeball. The positioning body has a positioning part and a puncture part. At least a part of the positioning part is a circular arc shape matched with the limbus of the eye. The puncture part is provided for the adjusting sleeve to pass through. One of the positioning part and the puncture part surrounds the other one, so that there is at least one positioning distance between the positioning part and the puncture part, and the positioning distance is in the range of 0.5-3mm.

[0006] In some embodiments of the present application, the positioning body is a plate structure with an inner recess, the puncture part is a sleeve hole matched with the adjusting sleeve, and is arranged at a middle position of the positioning body; the positioning part is a lateral arc surface arranged at an edge of the positioning body, and a plurality of the positioning parts are uniformly arranged along a circumferential direction of the positioning body, and each of the positioning parts has a positioning distance with the puncture part, and each of the positioning distances has a different value.

[0007] In some embodiments of the present application, the diameter of the sleeve hole is 0.8-1.4 mm, the positioning part has four, and the surface of the positioning body is further provided with scale values for identifying lengths of the positioning distances, and each of the scale values is arranged adjacent to the corresponding positioning part.

[0008] In some embodiments of the present application, the positioning body is a semi-spherical shell structure, so that the positioning body can cover the eyeball; the positioning part is a positioning hole matched with the limbus of the eye, and the puncture part is a slot arranged around the positioning hole.

[0009] In some embodiments of the present application, the positioning hole and the slot form an isolation part, the width of the isolation part is 0.1-2.3 mm, and the width of the slot is 0.8-1.4 mm.

[0010] In some embodiments of the present application, the slot has a plurality of slots uniformly distributed along the circumferential direction of the positioning hole and isolated from each other; each of the slots has a positioning distance from the edge of the positioning hole, and the surface of the positioning body is further provided with scale values for identifying lengths of the positioning distances, and each of the scale values is arranged adjacent to the corresponding positioning part; each of the positioning distances has the same value; or each of the slots has a positioning distance from the edge of the positioning hole, and each of the positioning distances has a different value.

[0011] In some embodiments of the present application, the positioning body is a plate structure with an inner recess, the positioning part is a positioning hole matched with the limbus of the eye, and the puncture part is a scale slot arranged around the positioning hole, and the scale slot has at least one, each of the scale slots has a plurality of scale walls in the circumferential direction, so that when the adjusting sleeve is tangent to two adjacent scale walls, the center of the adjusting sleeve and the edge of the positioning hole form a positioning distance.

[0012] In some embodiments of the present application, the surface of the positioning body is further provided with scale values for identifying lengths of the positioning distances, and each of the scale values is arranged adjacent to an intersection of the corresponding two scale walls.

[0013] In some embodiments of the present application, the index scale slots are multiple and communicate with the positioning holes.

[0014] In some embodiments of the present application, the thickness of the positioning body is 0.5-1mm.

[0015] The beneficial effects of the present application: the utility model discloses a ciliary body positioning device for positioning the position of ciliary body on the eye surface, facilitating the ciliary body radiofrequency ablation of ophthalmic radiofrequency ablation electrode, and the ophthalmic radiofrequency ablation electrode includes handle part, adjusting sleeve, electrode needle, adjusting sleeve is arranged in handle part, and the needle tip of electrode needle is exposed to adjusting sleeve, and the ciliary body positioning device includes positioning body, and one side of positioning body has the arc surface that is adapted to eyeball, so that positioning body can be applied to the surface of eyeball, and positioning body has positioning part and puncture part, and at least a part of positioning part is the circular arc shape that is adapted to the limbus of eye, and puncture part can be crossed by adjusting sleeve, and one of positioning part and puncture part is arranged around the other, so that positioning part and puncture part have at least one positioning distance between each other. The ciliary body positioning device can position the position of ciliary body on the eye surface to facilitate the ophthalmic radiofrequency ablation electrode to find the suitable ablation position, and improve the ablation precision. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative effort based on these drawings.

[0017] Figure 1 It is a perspective view of an embodiment of the ophthalmic radiofrequency ablation electrode.

[0018] Figure 2A It is a schematic view of an embodiment of the ciliary body positioning device of the utility model and adjusting sleeve used in cooperation.

[0019] Figure 2B It is a perspective view of an embodiment of the ciliary body positioning device of the utility model.

[0020] Figure 2C It is a top view of an embodiment of the ciliary body positioning device of the utility model.

[0021] Figure 2D It is another top view of an embodiment of the ciliary body positioning device of the utility model.

[0022] Figure 2E It is a schematic view of the use of an embodiment of the ciliary body positioning device of the utility model.

[0023] Figure 3AThis is a schematic diagram of another embodiment of the ciliary body positioning device of this utility model used in conjunction with the adjusting sleeve;

[0024] Figure 3B This is a top view of another embodiment of the ciliary body positioning device of this utility model;

[0025] Figure 3C This is a schematic diagram illustrating the use of another embodiment of the ciliary body positioning device of this utility model;

[0026] Figure 4A This is a top view of another embodiment of the ciliary body positioning device of this utility model;

[0027] Figure 4B This is a perspective view of another embodiment of the ciliary body positioning device of this utility model;

[0028] Figure 4C This is a partially enlarged schematic diagram of the graduated groove in another embodiment of the ciliary body positioning device of this utility model. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other alternative implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] This application discloses a ciliary body positioning device 100, which is used to locate the position of the ciliary body on the ocular surface and assist the ophthalmic radiofrequency ablation electrode 200 in performing radiofrequency ablation of the ciliary body; to facilitate... Figure 1 The ophthalmic radiofrequency ablation electrode 200 shown can accurately locate the ciliary body and perform radiofrequency ablation; Figure 1 In this application, the ophthalmic radiofrequency ablation electrode 200 includes a handle 210, an adjustment sleeve 220, and an electrode needle 230. The adjustment sleeve 220 is disposed in the handle 210, and the electrode needle 230 is inserted into the adjustment sleeve 220 with its tip protruding from the adjustment sleeve 220. This allows the electrode needle to penetrate the eye and perform radiofrequency ablation on the ciliary body. The ciliary body positioning device 100 in this application can locate the position of the ciliary body on the ocular surface, making it easier for the ophthalmic radiofrequency ablation electrode 200 to find a suitable ablation location. After the electrode needle 230 penetrates the ocular surface, it can accurately contact the ciliary body, improving ablation accuracy.

[0031] It should be noted that: the ophthalmic radiofrequency ablation electrode 200, in the ablation process, the electrode needle 230 is inserted into the eye, and the adjusting sleeve 220 is left on the eye surface; the part of the electrode needle 230 exposed to the adjusting sleeve 220 is inserted into the eye, and the length of the electrode needle 230 exposed to the adjusting sleeve 220 can be adjusted by adjusting or replacing the adjusting sleeve 220.

[0032] The following will introduce each embodiment of the ciliary body positioning device 100 in the application.

[0033] Embodiment one

[0034] As shown in Figures 2A to 2E , the ciliary body positioning device 100 includes a positioning body 10, one side of the positioning body 10 has an arc surface 11 matched with the eyeball, so that the positioning body 10 can be attached to the surface of the eyeball, reducing scleral damage; the positioning body 10 has a positioning part 12 and a puncture part 13, at least a part of the positioning part 12 is a circular arc shape matched with the limbus of the eye, so that the positioning part 12 can fit the circumference of the limbus; the puncture part 13 can be passed through the adjusting sleeve 220 to facilitate the electrode needle 230 to be inserted into the eye; wherein one of the positioning part 12 and the puncture part 13 surrounds the other, that is, the positioning part 12 surrounds the puncture part 13 or the puncture part 13 surrounds the positioning part 12, so that the positioning part 12 and the puncture part 13 have at least one positioning distance, and the positioning distance is in the range of 0.5-3mm.

[0035] In this embodiment, the positioning body 10 is a plate structure with an inner recess, one side of the inner recess of the plate structure is a smooth arc surface 11 for contacting the eye surface; the puncture part 13 is a sleeve hole matched with the adjusting sleeve 220, the puncture part 13 is preferably arranged at the middle position of the positioning body 10, and the diameter of the sleeve hole is 0.8-1.4mm, that is, the diameter of the adjusting sleeve 220 is 0.8-1.4mm, the diameter of the sleeve hole is designed to be the same as or slightly larger than the diameter of the adjusting sleeve 220, which can avoid the adjusting sleeve 220 from shaking after being inserted into the sleeve hole, affecting the positioning; the positioning part 12 is a lateral arc surface arranged at the edge of the positioning body 10, the curvature of the lateral arc surface is matched with the limbus, and the positioning part 12 and the puncture part 13 have a positioning distance, that is, after the adjusting sleeve 220 is placed in the puncture part 13, the distance between the center of the electrode needle 230 and the limbus is the positioning distance.

[0036] As shown in Figure 2EAs shown, the method for using the ciliary body positioning device 100 in this embodiment is as follows: according to the ciliary body data of the patient's eye measured by the bio-ultrasound microscope, the operator selects the appropriate positioning part 12 and attaches the positioning part 12 to the limbus Y to accurately position the ciliary body; then the adjusting sleeve 220 in the ophthalmic radiofrequency ablation electrode 200 is placed behind the puncture part 13, and the electrode needle 230 can ablate the ciliary body after being inserted into the eye.

[0037] Further, in order to reduce the difficulty of using the ciliary body positioning device 100, the ciliary body positioning device 100 is designed to be detachably connected with the adjusting sleeve 220, such as screwing or clamping, so that the ciliary body positioning device 100 can be fixed on the ophthalmic radiofrequency ablation electrode 200, facilitating the operator to use it with one hand.

[0038] Further, in order to facilitate the positioning of the body 10 to the surface of the eyeball, the thickness of the positioning body 10 is limited to 0.5-1mm, and within this thickness range, the positioning body 10 is very thin. At the same time, in order to avoid scratching the eye surface with the positioning body 10, the circumferential edge of the positioning body 10 is rounded.

[0039] Further, as shown in Figure 2C In order to facilitate the operator to select different positioning distances, the positioning part 12 has a plurality of (to distinguish different positioning parts 12, they are marked as 12a, 12b, 12c, 12d) and are uniformly arranged along the circumference of the positioning body 10, each positioning part 12 has a positioning distance from the puncture part 13, and each positioning distance has a different value. For example, the number of positioning parts 12 is limited to four, the distance between the positioning part 12a and the center O of the puncture part 13 is L1a, the distance between the positioning part 12b and the center O of the puncture part 13 is L1b, the distance between the positioning part 12c and the center O of the puncture part 13 is L1c, the distance between the positioning part 12d and the center O of the puncture part 13 is L1d, and the distance between the positioning part 12d and the center O of the puncture part 13 is L1d; in some embodiments, the value of L1a is 1.2mm, the value of L1b is 1.3mm, the value of L1c is 1.4mm, and the value of L1d is 1.5mm.

[0040] As shown in Figure 2B In order to facilitate the operator to intuitively understand the positioning distance of the selected positioning part 12, a scale value (such as 1.2mm, 1.3mm, 1.4mm and 1.5mm) indicating the length of the positioning distance is also provided on the surface of the positioning body 10, each scale value is arranged adjacent to the corresponding positioning part 12, which can directly reflect the positioning distance of each positioning part 12, and facilitate the operator to select the appropriate positioning part 12.

[0041] Furthermore, in some embodiments, the positioning part 12 on the positioning body 10 is only one, and the ciliary body positioning device 100 is designed in multiple models according to different positioning distances. Alternatively, in some embodiments, the positioning part 12 on the positioning body 10 is multiple, and the distance between each positioning part 12 and the center O of the puncture part 13 is the same.

[0042] Example 2

[0043] like Figures 3A to 3C As shown, in this embodiment, the positioning body 10 has a hemispherical shell structure, and the inner side of the hemispherical shell is a smooth arc surface 11, so that the positioning body 10 can cover the eyeball; the positioning part 12 is a positioning hole adapted to the limbus of the eye, so as to avoid contact with the cornea and cause corneal damage during use; preferably, the positioning hole is located at the center of the positioning body 10; the puncture part 13 is a slot surrounding the positioning hole, the width of the slot is adapted to the diameter of the adjusting sleeve 220, and an isolation part 14 is formed between the positioning hole and the slot, so that there is at least one positioning distance between the edge of the slot and the positioning hole.

[0044] like Figure 3B As shown, in this embodiment, the width of the slot is 0.8~1.4mm; the width of the isolation part 14 is 0.1~2.3mm; in some specific embodiments, the width of the slot is 1mm, the width of the isolation part 14 is 1.5mm, then the value of the positioning distance L2 is 1.5+1*1 / 2=2mm.

[0045] Furthermore, such as Figure 3B As shown, to enable the operator to perform radiofrequency ablation at various locations of the ciliary body, multiple slots are configured, evenly distributed along the circumference of the positioning holes and isolated from each other; in Figure 3B The device has four slots, namely puncture sections 13a, 13b, 13c, and 13d. The slots are fan-shaped, and each slot has a positioning distance from the edge of the positioning hole. The value of each positioning distance is the same, which allows the operator to perform radiofrequency ablation on the ciliary body from various positions in the circumferential direction of the positioning body 10. The positioning distance remains unchanged when changing the ablation position, thereby avoiding repeated positioning and improving efficiency.

[0046] Furthermore, when the same ciliary body positioning device 100 has multiple slots with the same positioning distance, the ciliary body positioning device 100 can be designed as multiple models, each model of the ciliary body positioning device 100 having a positioning distance, so as to facilitate the operator's selection.

[0047] Further, in some embodiments, the slot is only one, and the shape of the slot is a sector; or in some embodiments, the slot is a circular ring arranged around the positioning hole, which can also enable the operator to perform radiofrequency ablation on the ciliary body from various directions; in some embodiments, each slot has a positioning distance from the edge of the positioning hole, and the value of each positioning distance is different, so that the operator can select different positioning distances for radiofrequency ablation.

[0048] Further, in order to facilitate the operator to intuitively understand the positioning distance corresponding to each positioning part 12, the surface of the positioning body 10 is also provided with a scale value (not shown in the figure) indicating the length of the positioning distance, and each scale value is arranged adjacent to the corresponding positioning part 12.

[0049] Please refer to Figure 3C The use method of the ciliary body positioning device 100 in the embodiment is as follows: the operator selects a suitable ciliary body positioning device 100 according to the ciliary body data of the patient's eye measured by the biological ultrasound microscope, covers the positioning body 10 on the eyeball, aligns the positioning part 12 (positioning hole) with the limbus Y, selects one slot corresponding to the ciliary body positioning device 100, accurately positions the position of the ciliary body, and then inserts the adjusting sleeve 220 in the ophthalmic radiofrequency ablation electrode 200 into the slot, so that the electrode needle 230 can be inserted into the eye to perform radiofrequency ablation on the ciliary body; after the ophthalmic radiofrequency ablation electrode 200 completes the radiofrequency ablation in the slot (generally, 2-3 positions are selected for ablation), the ablation is performed in the next slot according to the needs.

[0050] Embodiment three

[0051] As Figures 4A to 4C shown, in the embodiment, the positioning body 10 is a plate-shaped structure with an inner recess, and the side of the inner recess is a smooth arc surface 11 for contacting the eye surface; the positioning part 12 is a positioning hole matched with the limbus of the eye, which avoids contacting the cornea to cause corneal damage during use; preferably, the positioning hole is located at the center position of the positioning body 10, and the puncture part 13 is a dividing scale slot arranged around the positioning hole, which has at least one, and each dividing scale slot has a plurality of scale walls in the circumferential direction, so that when the adjusting sleeve 220 is tangent to the two adjacent scale walls, a positioning distance is formed between the center of the adjusting sleeve 220 and the edge of the positioning hole.

[0052] As Figure 4CAs shown, in the embodiment, the scale groove (i.e. the puncture part 13) has five scale walls (131a, 131b, 131c, 131d, 131e), when the adjusting sleeve 220a is tangent to the scale wall 131a and the scale wall 131b, the distance between the center of the adjusting sleeve 220a and the edge of the positioning hole is L3a; when the adjusting sleeve 220b is tangent to the scale wall 131b and the scale wall 131c, the distance between the center of the adjusting sleeve 220b and the edge of the positioning hole is L3b; when the adjusting sleeve 220c is tangent to the scale wall 131c and the scale wall 131d, the distance between the center of the adjusting sleeve 220c and the edge of the positioning hole is L3c; when the adjusting sleeve 220d is tangent to the scale wall 131d and the scale wall 131e, the distance between the center of the adjusting sleeve 220d and the edge of the positioning hole (i.e. the positioning part 12) is L3d; in some embodiments, the value of L3a is 1.0mm, the value of L3b is 1.5mm, the value of L3c is 1.6mm, and the value of L3d is 1.6mm.

[0053] Further, in order to facilitate the operator to intuitively understand the positioning distance, the surface of the positioning body 10 is further provided with scale values (not shown in the figure) indicating the length of the positioning distance, each scale value is arranged adjacent to the intersection of the corresponding two scale walls.

[0054] Further, in order to enable the operator to perform radiofrequency ablation on each position of the ciliary body, the scale groove is provided as a plurality of scale grooves, and the plurality of scale grooves are uniformly distributed along the circumference of the positioning hole and are isolated from each other.

[0055] Further, in the embodiment, the scale groove is in communication with the positioning hole; in some embodiments, the plurality of scale grooves are only uniformly distributed along the circumference of the positioning hole but are not in communication with the positioning hole, i.e. the scale groove is a closed through hole, has more scale walls, and thus further increases the selection range of the positioning distance.

[0056] As can be seen, in the embodiment, a single scale groove has multiple different positioning distances, the range for the operator to select is large, the differentiation of the eyeball is reduced, and the application range is improved; at the same time, the scale groove has a plurality of scale grooves, which can facilitate the operator to perform radiofrequency ablation on the ciliary body in each direction.

[0057] Finally, it needs to be explained that if the directionality indication (such as up, down, left, right, front, back, etc.) is involved in the embodiments of the present application, the directionality indication is only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directionality indication also changes accordingly.

[0058] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor in the protection scope of the present application.

[0059] The above is only the implementation of the present application, and does not limit the patent scope of the present application, any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A ciliary body positioning device, characterized in that, Used to locate the position of the ciliary body on the ocular surface. An auxiliary ophthalmic radiofrequency ablation electrode for radiofrequency ablation of the ciliary body; the ophthalmic radiofrequency ablation electrode includes a handle, an adjustment sleeve, and an electrode needle, the adjustment sleeve being disposed in the handle, the electrode needle being inserted into the adjustment sleeve, and the tip of the electrode needle being exposed outside the adjustment sleeve; The ciliary body positioning device includes a positioning body, one side of which has an arc surface adapted to the eyeball, so that the positioning body can be applied to the surface of the eyeball. The positioning body has a positioning part and a puncture part. At least a portion of the positioning part is an arc shape adapted to the limbus of the eye. The puncture part allows the adjustment cannula to pass through. The positioning part and the puncture part are arranged around the other, such that there is at least one positioning distance between the positioning part and the puncture part, which is in the range of 0.5 to 3 mm.

2. The ciliary body positioning device of claim 1, wherein, The positioning body is a plate-shaped structure with an inner recess. The puncture part is a cannula hole adapted to the adjusting cannula and is located in the middle of the positioning body. The positioning part is a lateral arc surface located on the edge of the positioning body. There are multiple positioning parts, which are evenly distributed along the circumference of the positioning body. Each positioning part has a positioning distance from the puncture part, and the value of each positioning distance is different.

3. The ciliary body positioning device of claim 2, wherein, The diameter of the sleeve hole is 0.8~1.4mm, and there are four positioning parts. The surface of the positioning body is also provided with scale values ​​that indicate the length of the positioning distance, and each scale value is provided adjacent to the corresponding positioning part.

4. The ciliary body positioning device of claim 1, wherein, The positioning body has a hemispherical shell structure, which allows it to cover the eyeball; the positioning part is a positioning hole adapted to the limbus of the eye, and the puncture part is a slot surrounding the positioning hole.

5. The ciliary body positioning device of claim 4, wherein, An isolation portion is formed between the positioning hole and the slot, the width of the isolation portion is 0.1~2.3mm, and the width of the slot is 0.8~1.4mm.

6. The ciliary body positioning device of claim 5, wherein, The slots are multiple, evenly distributed and isolated from each other along the circumference of the positioning hole; each slot has a positioning distance from the edge of the positioning hole, and the surface of the positioning body is also provided with a scale value indicating the length of the positioning distance, with each scale value adjacent to the corresponding positioning part; the value of each positioning distance is the same; or, each slot has a positioning distance from the edge of the positioning hole, and the value of each positioning distance is different.

7. The ciliary body positioning device of claim 1, wherein, The positioning body is a plate-like structure with an indentation, and the positioning part is a positioning hole adapted to the limbus of the eye. The puncture part is a graduated groove arranged around the positioning hole. There is at least one graduated groove, and each graduated groove has multiple scale walls in the circumferential direction, so that when the adjusting sleeve is tangent to two adjacent scale walls, a positioning distance is formed between the center of the adjusting sleeve and the edge of the positioning hole.

8. The ciliary body positioning device of claim 7, wherein, The surface of the positioning body is further provided with scale values for identifying the length of the positioning distance, each of the scale values being arranged adjacent to the intersection of its corresponding two size walls.

9. The ciliary body positioning device of claim 8, wherein, The index scale slots are multiple and communicate with the positioning holes.

10. The ciliary body positioning device of any one of claims 1 to 9, wherein, The thickness of the positioning body is 0.5-1mm.