Ciliary body radiofrequency ablation puncture system

Abstract

The invention discloses a radiofrequency ablation puncture system for a ciliary body. The radiofrequency ablation puncture system comprises a handle; the needle core comprises a body part and a tip part, the body part is fixed in the handle part, and the tip part is located at the first end of the body part and extends out of the handle part; the tip part comprises a first section and a second section, the first end of the first section is connected with the body part, the second end of the first section is connected with the second end of the second section, and the first end of the second section is arranged to be a puncture tip; the first section is bent relative to the second section, and the orthographic projection of the handle part and the orthographic projection of the second section do not have a coincident part; the insulation sleeve is connected to the first section and the second section in a sleeving mode, the puncture tip extends out of the insulation sleeve, and at least one part of the insulation sleeve is arranged to enter the puncture channel along with the puncture tip. The technical effect that when the handle part is held for surgical operation, the guiding equipment can accurately guide from the position over the second section and does not interfere with the action of the handle part is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a ciliary body radiofrequency ablation puncture system. Background Art

[0002] Radiofrequency is a high-frequency vibration that can reach a frequency of 150,000 times per second. Its thermal effect enables radiofrequency therapeutic devices to have ablation and cutting functions. Compared with traditional surgical treatment, radiofrequency ablation has the advantages of short treatment time, no need for sutures, less bleeding, minimal invasiveness, and precision, and is generally recognized by clinicians. It is currently commonly used in the fields of arrhythmia, solid tumors, herniated discs, gynecological diseases, etc., but has not yet been widely used in ophthalmic diseases. Its application is hindered by the lack of radiofrequency therapeutic devices that are adapted to the tissue structure of the eye. The radiofrequency ablation electrode (handle) is the core component of the radiofrequency ablation instrument. When the electrode is introduced into the lesion site, the radiofrequency energy causes the temperature inside the tissue to rise instantaneously, resulting in irreversible coagulative necrosis. The design of the radiofrequency ablation electrode directly affects the size and shape of the coagulative necrosis.

[0003] Currently, the main disadvantage of the radiofrequency ablation handle used in ciliary body surgery is that due to the uneven surface of the eyeball and the small operating space, the ciliary body radiofrequency ablation system, such as the handle, has physical obstructions between the instruments when used simultaneously with a guiding device such as UBM (ultrasound biomicroscopy technology), making operation inconvenient. Summary of the Invention

[0004] The main purpose of the present invention is to provide a ciliary body radiofrequency ablation puncture system to solve the problem in the related art that when the ciliary body radiofrequency ablation system is used simultaneously with a guiding device, there is physical obstruction between the instruments, which makes the operation inconvenient.

[0005] In order to achieve the above-mentioned object, the present invention provides a ciliary body radiofrequency ablation puncture system, comprising:

[0006] handle;

[0007] A needle core, the needle core comprising a body and a tip, the body being fixed within the handle, the tip being located at a first end of the body and extending out of the handle;

[0008] The tip portion includes a first segment and a second segment, the first end of the first segment is connected to the body, the second end of the first segment is connected to the second end of the second segment, and the first end of the second segment is configured as a puncture tip;

[0009] The first segment is bent relative to the second segment, so that the orthographic projection of the handle and the orthographic projection of the second segment do not have any overlapping parts;

[0010] An insulating kit is sleeved on the first segment and the second segment, the puncture tip extends out of the insulating kit, and at least a portion of the insulating kit is configured to enter the puncture channel along with the puncture tip.

[0011] Furthermore, the first segment includes a horizontal segment and an inclined segment, two ends of the horizontal segment are respectively connected to the second end of the second segment and the inclined segment, and the axis of the horizontal segment is perpendicular to the axis of the second segment;

[0012] The inclined section is connected to the body, the axis of the inclined section and the axis of the horizontal section are inclined upward at an acute angle, and the axis of the inclined section and the axis of the body are collinear or parallel.

[0013] Furthermore, the insulation kit includes an insulation layer and an expansion layer, the insulation layer is sleeved on the second segment, the puncture tip extends out of the insulation layer, and at least a portion of the insulation layer is configured to be able to enter the puncture channel with the puncture tip; the expansion layer is sleeved on the first segment and the second segment, and the two ends of the expansion layer are respectively connected to the body and the insulation layer.

[0014] Furthermore, a convex portion is provided on one end of the insulating layer away from the puncture tip.

[0015] Furthermore, the insulating layer is detachably connected to the second segment.

[0016] Furthermore, the outer diameter of the expansion layer is larger than the outer diameter of the insulating layer, the first end of the expansion layer is connected to the body, and the second end of the expansion layer abuts against the end of the insulating layer away from the puncture tip.

[0017] Furthermore, the diameter of the tip is smaller than the diameter of the body, and the second end of the expansion layer abuts against the end of the body.

[0018] Furthermore, a wire connecting portion is provided on one end of the body away from the tip.

[0019] Furthermore, the tip is a hard metal conductor, the diameter of the tip is 0.1-0.4 mm; the thickness of the insulating layer is 0.03 mm-0.1 mm.

[0020] Furthermore, the diameter of the tip is 0.2 mm, and the thickness of the insulating layer is 0.05 mm.

[0021] In an embodiment of the present invention, a handle is provided; a needle core, the needle core includes a body and a tip, the body is fixed in the handle, the tip is located at the first end of the body and extends out of the handle; the tip includes a first segment and a second segment, the first end of the first segment is connected to the body, the second end of the first segment is connected to the second end of the second segment, and the first end of the second segment is set as a puncture tip; the first segment is bent relative to the second segment; an insulating sleeve, the insulating sleeve is sleeved on the first segment and the second segment, the puncture tip extends out of the insulating sleeve, and at least a part of the insulating sleeve is configured to enter the puncture channel with the puncture tip, so as to achieve the purpose of bending the tip extending from the handle to form a first segment. The bending angle of the segment and the second segment is such that there is no overlapping part between the orthographic projection of the handle and the orthographic projection of the second segment, and the purpose of isolating the radiofrequency current released by the tip in the puncture channel by the insulating kit is achieved, so that when the handle is held for surgical operation, the guiding device can accurately guide from directly above the second segment without interfering with the movement of the handle, and only releases radiofrequency current at the puncture tip, achieving the technical effect of precise ablation, thereby solving the problem in the related technology that the ciliary body radiofrequency ablation system has physical obstruction between the instruments when used simultaneously with the guiding device, which is inconvenient to operate and easy to cause damage to the puncture channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention and to make other features, objects, and advantages of the present invention more apparent. The accompanying drawings and descriptions of the exemplary embodiments of the present invention are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 1. An exploded view and an assembly view of a ciliary body radiofrequency ablation and puncture system according to an embodiment of the present invention;

[0024] Figure 2 yes Figure 1 Schematic diagram of the partially enlarged structure;

[0025] Figure 3 is a schematic diagram of a partially enlarged structure of a needle core according to an embodiment of the present invention;

[0026] Figure 4 is a structural schematic diagram of another embodiment of the tip according to the embodiment of the present invention;

[0027] Among them, 1 handle, 2 needle cores, 201 body, 2010 wire connection part, 202 tip, 2020 puncture tip, 2021 first segment, 20210 horizontal segment, 20211 inclined segment, 2022 second segment, 3 expansion layer, 4 insulation layer, 401 convex part, 5 insulation kit. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first," "second," and the like in the specification and claims of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that the terms used in this manner are interchangeable where appropriate to facilitate the description of the embodiments of the present invention.

[0030] In the present invention, the terms "upper," "lower," "inner," and the like indicate positions or locations based on those shown in the accompanying drawings. These terms are primarily intended to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0031] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0032] Furthermore, the terms "disposed," "provided with," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0033] Additionally, the term "plurality" shall mean two or more.

[0034] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] To solve related technical problems, such as Figures 1 to 3 As shown, an embodiment of the present invention provides a ciliary body radiofrequency ablation puncture system, comprising:

[0036] handle 1;

[0037] The needle core 2 includes a body 201 and a tip 202 . The body 201 is fixed in the handle 1 , and the tip 202 is located at a first end of the body 201 and extends out of the handle 1 .

[0038] The tip 202 includes a first segment 2021 and a second segment 2022 . The first end of the first segment 2021 is connected to the body 201 . The second end of the first segment 2021 is connected to the second end of the second segment 2022 . The first end of the second segment 2022 is configured as a puncture tip 2020 .

[0039] The first segment 2021 is bent relative to the second segment 2022 so that the orthographic projection of the handle 1 and the orthographic projection of the second segment 2022 do not overlap.

[0040] The insulating kit 5 is sleeved on the first segment 2021 and the second segment 2022 , the puncture tip 2020 extends out of the insulating kit 5 , and at least a portion of the insulating kit 5 is configured to be able to enter the puncture channel along with the puncture tip 2020 .

[0041] In this embodiment, the radiofrequency ablation handle mainly includes a handle 1 and a needle core 2. The handle 1 is a long strip structure for an operator or operating equipment to hold. The needle core 2 is installed inside the handle 1, and the puncture tip 2020 of the needle core 2 extends out of the handle 1. The needle core 2 can be connected to the wire to form a complete conductive path, ensuring that the puncture tip 2020 of the needle core 2 can perform radiofrequency operation. During the process of radiofrequency ablation of the ciliary body, it is necessary to cooperate with a guiding device, such as an ultrasonic biomicroscope, which can monitor the puncture position and puncture depth.

[0042] In order to avoid instrument interference between the operation of the ablation handle and the ultrasound biomicroscope, the structure of the needle core 2 is further adjusted in this embodiment. Figure 1 and Figure 3As shown, in this embodiment, the needle core 2 comprises a body 201 and a tip 202. The body 201 is fixed within the handle 1 and can be a straight, elongated structure, while the tip 202 extends beyond the handle 1. In this embodiment, the tip 202 is no longer a straight structure, but is instead divided into at least two curved sections: a first section 2021 and a second section 2022. The first end of the first section 2021 is connected to the body 201, and the second end of the first section 2021 is connected to the second end of the second section 2022. The first end of the second section 2022 is configured as a puncture tip 2020. After the first segment 2021 and the second segment 2022 are bent relative to each other, the bending angle can be controlled so that there is no overlapping part between the orthographic projection of the handle 1 and the orthographic projection of the second segment 2022, that is, the orthographic projection of the handle 1 and the orthographic projection of the second segment 2022 are completely staggered and do not contact each other. Therefore, when the puncture process is monitored from top to bottom by an ultrasonic biomicroscope, the handle 1 will no longer block or interfere with the second segment 2022, so that when the operator holds the handle 1 for radiofrequency ablation, the ultrasonic biomicroscope can accurately monitor the puncture position and puncture depth, thereby improving the efficiency and success rate of the operation.

[0043] On this basis, in this embodiment, an insulating sleeve 5 is sleeved on the tip 202 of the needle core 2. The insulating sleeve 5 bends along the first segment 2021 and the second segment 2022, and the puncture tip 2020 extends beyond the lower end of the insulating sleeve 5. The portion of the insulating sleeve 5 near the puncture tip 220 can be made thinner, allowing this portion to enter the eye tissue along with the puncture tip 220. The insulating sleeve 5 can isolate the radiofrequency current released by the tip 202 in the eye tissue (i.e., in the puncture channel tissue), so that the radiofrequency current is released only from the puncture tip 220, thereby preventing the radiofrequency current from damaging the puncture channel tissue, achieving precise ablation, and achieving a minimally invasive effect.

[0044] In the embodiment where the first segment 2021 and the second segment 2022 are bent relative to each other, the first segment 2021 and the second segment 2022 have a variety of bending angles. In this embodiment, there is no limitation on the specific bending angle, and those skilled in the art can adjust the bending angle according to the structure of the handle 1.

[0045] like Figure 3 As shown, in one embodiment, in order to enable the tip 202 of the needle core 2 to better fit the surface of the human eyeball, thereby further facilitating the radiofrequency ablation operation, the structure of the first segment 2021 is further improved in this embodiment.

[0046] Specifically, the first segment 2021 in this embodiment includes a horizontal segment 20210 and an inclined segment 20211. The two ends of the horizontal segment 20210 are respectively connected to the second end of the second segment 2022 and the inclined segment 20211. The axis of the horizontal segment 20210 is perpendicular to the axis of the second segment 2022.

[0047] The inclined section 20211 is connected to the body 201 , and the axis of the inclined section 20211 forms an obtuse angle with the axis of the horizontal section 20210 .

[0048] In this embodiment, the horizontal segment 20210 and the second segment 2022 are perpendicular, so that when the puncture tip 2020 on the second segment 2022 is punctured at a certain angle, the second segment 2022 can fit the shape of the eyeball surface relatively better, which not only provides operating space for puncture monitoring of the ultrasonic biomicroscope, but also improves the accuracy and stability of the puncture process.

[0049] like Figure 3 As shown, when the first segment 2021 includes the horizontal segment 20210, in order to facilitate holding the handle 1 for operation, the first segment 2021 in this embodiment also includes an inclined segment 20211. The inclined segment 20211 is bent upward at a certain angle relative to the horizontal segment 20210, so that the body 201 of the handle 1 and the needle core 2 are both inclined upward at a certain angle relative to the horizontal segment 20210, so that the end of the handle 1 can be kept as far away from the second segment 2022 as possible while facilitating operation, so as to leave sufficient operating space for the ultrasonic biomicroscope.

[0050] In one embodiment, the angle at which the inclined section 20211 is inclined upward relative to the horizontal section 20210 is 40°. In another embodiment, the angle at which the inclined section 20211 is inclined upward relative to the horizontal section 20210 is 60°, which is preferably 60° in the present invention.

[0051] On the basis of the above-mentioned embodiment, in this embodiment, the axis of the inclined section 20211 is collinear or parallel to the axis of the body 201 , preferably collinear, which is conducive to the integral molding of the needle core 2 .

[0052] Since the horizontal section 20210 is bent relative to the second section 2022 and the inclined section 20211 is bent relative to the horizontal section 20210, the thinner tip 202 of the needle core 2 has two bends. To avoid large deformation of the bends during use, the two bends of the tip 202 are bent at a certain arc. On this basis, to further avoid deformation, as shown in FIG. Figure 4 As shown, thickening treatment can be performed on the inner bend position of the bend.

[0053] In one embodiment, a long needle core 2 can be produced using a corresponding mold. The mold is then designed to increase the diameter of the needle core 2 at the designed bend, and then the needle core 2 is bent using the corresponding tooling. The increased diameter at the bend makes the tip 202 of the needle core 2 less susceptible to deformation after bending.

[0054] During radiofrequency ablation of the ciliary body, the puncture tip 2020 at the end of the second segment 2022 must sequentially traverse the conjunctiva, sclera, and ciliary muscle tissue before reaching the vicinity of the ciliary epithelium. During radiofrequency ablation, the current released from the second segment 2022 must be isolated from any damage to the tissue along the puncture path. Current is released only through the puncture tip 2020, allowing ablation of tissue near the puncture tip 2020 and limiting the ablation range to the vicinity of the ciliary epithelium, achieving a precise and minimally invasive effect.

[0055] Therefore, if Figure 1 and Figure 2 As shown, the insulating sleeve 5 includes an insulating layer 4. In this embodiment, the insulating layer 4 is sleeved on the second segment 2022, and the puncture tip 2020 extends out of the insulating layer 4. The insulating layer 4 needs to ensure insulation performance while being as thin as possible, so that the insulating layer 4 can enter the puncture channel tissue along with the second segment 2022, and the insulating layer 4 isolates the radio frequency current released at the non-puncture tip 2020 position on the second segment 2022 from damaging the puncture channel tissue.

[0056] In order to further limit the puncture depth of the puncture tip 2020, it is necessary to limit the maximum puncture depth of the puncture tip 2020 according to the surgical situation. Figure 2 As shown, in this embodiment, a convex portion 401 is provided on the end of the insulating layer 4 away from the puncture tip 2020, and the puncture depth of the puncture needle is limited by the convex portion 401.

[0057] During puncture, the puncture tip 2020 of the eyeball tissue reaches the vicinity of the ciliary epithelial tissue. During this process, the insulating layer 4 enters the puncture channel tissue along with the second segment 2022. When the puncture reaches the point where the protrusion 401 on the insulating layer 4 contacts the surface of the eyeball, the puncture resistance is significantly increased, thereby limiting the puncture tip 2020 from further entering the deep part of the eyeball and avoiding eyeball penetration.

[0058] On this basis, a resistance monitoring device (not shown in the figure) can be further provided to monitor the resistance experienced by the needle core 2. When the resistance suddenly changes during the puncture process, the protrusion 401 on the surface insulating layer 4 contacts the eyeball, and the puncture depth of the puncture tip 2020 meets the requirements. In this embodiment, the resistance monitored by the resistance monitoring device is a relative resistance value rather than an absolute resistance value. Specifically, during the puncture process, the resistance experienced by the needle core 2 can be monitored in real time by the resistance monitoring device. When the change in the resistance value exceeds a set threshold, the protrusion 401 on the surface insulating layer 4 has contacted the surface of the eyeball, and the puncture can be stopped at this time.

[0059] In one embodiment of the resistance monitoring device, the resistance monitoring device monitors the resistance via a pressure sensor. Specifically, the pressure sensor may be disposed within the handle 1, and the end of the needle core 2 may be connected to a pressure detection terminal of the pressure sensor. The resistance is fed back by detecting the pressure on the needle core 2.

[0060] The design of the protrusion 401 of the insulating layer can be achieved by locally thickening the insulating layer 4 .

[0061] Because different patients require different puncture depths, when limiting the puncture depth using the protrusion 401 on the insulating layer 4, it is necessary to replace the insulating layer 4 with a different limiting depth according to the patient's desired puncture depth. Therefore, to facilitate replacement of the insulating layer 4, in this embodiment, the insulating layer 4 is detachably connected to the second segment 2022.

[0062] To further control the puncture depth and isolate the current at the non-ablation position on the tip 202, as shown in FIG. Figure 1 and Figure 2 As shown, the insulating sleeve 5 in this embodiment further includes an expansion layer 3, which is sleeved over the tip 202, specifically, the first segment 2021 and the second segment 2022, covering a portion of the second segment 2022. The expansion layer 3 is made of an insulating material, and its outer diameter is greater than that of the insulating layer 4. A first end of the expansion layer 3 is connected to the body 201, and a second end of the expansion layer 3 abuts against an end of the insulating layer 4 away from the puncture tip 2020.

[0063] Specifically, in this embodiment, the tip 202 of the needle core 2 extends beyond the handle 1. Therefore, when the needle core 2 is energized, the entire tip 202 releases radiofrequency current. To prevent the radiofrequency current from damaging the eye tissue at the non-ablation location on the tip 202, an insulating layer 4 is first applied to the second segment 2022 of the tip 202. A portion of this insulating layer 4 can enter the puncture channel along with the puncture tip 220, thereby preventing the radiofrequency current from damaging the tissue along the puncture channel. Furthermore, in this embodiment, an expansion layer 3 is applied to the tip 202. This expansion layer 3 is also made of an insulating material and does not enter the puncture channel along with the puncture tip 220. The two ends of the expansion layer 3 respectively abut against the insulating layer 4 and the body 201 of the needle core 2. The expansion layer 3 isolates the radiofrequency current from the portion of the tip 202 of the needle core 2 located above the insulating layer 4. Under the combined action of the expansion layer 3 and the insulating layer 4 , the tip 202 of the needle core 2 releases radio frequency current only at the puncture tip 2020 , thereby completely isolating the radio frequency current from damaging the non-ablation position on the eyeball.

[0064] In addition, in this embodiment, the upper end of the insulating layer 4 has a protrusion 401 for limiting the puncture depth, forming a primary limiting structure. Furthermore, the outer diameter of the expansion layer 3 is larger than that of the insulating layer 4. Therefore, after the lower end of the expansion layer 3 abuts the upper end of the insulating layer 4, the lower end surface of the expansion layer 3 acts as a secondary puncture depth limiting structure during the puncture process, thereby more effectively controlling the puncture depth.

[0065] In this embodiment, the insulating layer 4 is sleeved on a portion of the second segment 2022 , and the expansion layer 3 is sleeved on a portion of the second segment 2022 and the first segment 2021 . Therefore, in this embodiment, the expansion layer 3 also has two corresponding bends.

[0066] In one embodiment, the diameter of the tip portion 202 is smaller than the diameter of the body portion 201 , and the second end of the expansion layer 3 abuts against the end of the body portion 201 .

[0067] To facilitate connection between the needle core 2 and the wire, in this embodiment, a wire connecting portion 2010 is provided on the end of the body 201 away from the tip 202 .

[0068] To facilitate puncture, the tip 202 is a hard metal conductor. In one embodiment of the tip 202, the diameter of the tip 202 is 0.1-0.4 mm, and the thickness of the insulating layer 4 is 0.03 mm-0.1 mm. Furthermore, the diameter of the tip 202 is 0.2 mm, and the thickness of the insulating layer 4 is 0.05 mm.

[0069] The ciliary body radiofrequency ablation puncture system of the present invention can ablate the ciliary body of the eyeball, reduce its function of secreting aqueous humor, and thus fundamentally reduce intraocular pressure and treat glaucoma; it can also simply and accurately locate the ciliary body, and can be used in conjunction with UBM, making it possible to accurately ablate the ciliary body at a fixed point. On the basis of the original ciliary body radiofrequency ablation puncture system, it further protects the scleral puncture channel and conjunctival tissue, so that the puncture depth is better controlled, and can better cooperate with UBM to complete the operation, with great clinical application value.

[0070] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A ciliary body radiofrequency ablation puncture system, characterized in that: include: handle; A needle core, the needle core comprising a body and a tip, the body being fixed within the handle, the tip being located at a first end of the body and extending out of the handle; The tip portion includes a first segment and a second segment, the first end of the first segment is connected to the body, the second end of the first segment is connected to the second end of the second segment, and the first end of the second segment is configured as a puncture tip; The first segment is bent relative to the second segment, so that the orthographic projection of the handle and the orthographic projection of the second segment do not have any overlapping parts; An insulating kit is sleeved on the first segment and the second segment, the puncture tip extends out of the insulating kit, and at least a portion of the insulating kit is configured to enter the puncture channel along with the puncture tip.

2. The ciliary body radiofrequency ablation puncture system according to claim 1, characterized in that: The first segment includes a horizontal segment and an inclined segment, two ends of the horizontal segment are respectively connected to the second end of the second segment and the inclined segment, and the axis of the horizontal segment is perpendicular to the axis of the second segment; The inclined section is connected to the body, the axis of the inclined section and the axis of the horizontal section are inclined upward at an acute angle, and the axis of the inclined section and the axis of the body are collinear or parallel.

3. The ciliary body radiofrequency ablation puncture system according to claim 2, characterized in that: The insulating sleeve comprises an insulating layer and an expansion layer, the insulating layer being sleeved on the second segment, the puncture tip extending out of the insulating layer, and at least a portion of the insulating layer being configured to be able to enter the puncture channel along with the puncture tip; The expansion layer is sleeved on the first segment and the second segment, and two ends of the expansion layer are respectively connected to the body and the insulating layer.

4. The ciliary body radiofrequency ablation puncture system according to claim 3, characterized in that: A convex portion is provided on one end of the insulating layer away from the puncture tip.

5. The ciliary body radiofrequency ablation puncture system according to claim 3, characterized in that: The insulating layer is detachably connected to the second segment.

6. The ciliary body radiofrequency ablation puncture system according to any one of claims 3 to 5, characterized in that: The outer diameter of the expansion layer is greater than the outer diameter of the insulating layer. The first end of the expansion layer is connected to the body, and the second end of the expansion layer abuts against the end of the insulating layer away from the puncture tip.

7. The ciliary body radiofrequency ablation puncture system according to claim 6, characterized in that: The diameter of the tip portion is smaller than the diameter of the body portion, and the second end of the expansion layer abuts against the end of the body portion.

8. The ciliary body radiofrequency ablation puncture system according to claim 1, characterized in that: A wire connecting portion is provided on one end of the body away from the tip.

9. The ciliary body radiofrequency ablation puncture system according to claim 3, characterized in that: The tip is a hard metal conductor, and the diameter of the tip is 0.1-0.4 mm; the thickness of the insulating layer is 0.03 mm-0.1 mm.

10. The ciliary body radiofrequency ablation puncture system according to claim 9, characterized in that: The diameter of the tip is 0.2 mm, and the thickness of the insulating layer is 0.05 mm.

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