Ophthalmology radiofrequency ablation training model
By designing an ophthalmic radiofrequency ablation training model and utilizing conductive materials and impedance detection units, the problem of doctors having difficulty accurately inserting electrode needles during radiofrequency ablation surgery was solved, achieving rapid and accurate training results and improving surgical efficiency and safety.
Patent Information
- Application Number
- CN202423149966.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-19
AI Technical Summary
In the current technology, doctors lack effective training tools when performing ophthalmic radiofrequency ablation surgery, making it difficult to accurately grasp the insertion position and depth of the electrode needle, which affects the efficiency and safety of the surgery.
A training model for ophthalmic radiofrequency ablation is designed, which includes simulated structures of the sclera, ciliary body, and aqueous humor. It is made of conductive materials and equipped with an impedance detection unit. By feeding back different impedance values, it helps the operator determine the insertion position and depth of the electrode needle.
By simulating a real ophthalmological environment, it helps doctors accumulate experience during training, quickly and accurately locate ablation sites, and improve surgical efficiency and safety.
Smart Images
Figure CN223582600U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of medical equipment, in particular to an ophthalmic radiofrequency ablation training model. BACKGROUND
[0002] Radiofrequency ablation technology mainly implements ablation through the thermal effect on the organism. When radiofrequency current flows through human tissues, the water molecules with polarity in the tissues move at high speed due to the rapid change of electromagnetic field, generating heat (i.e. endogenous heat effect), causing 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, ablation accuracy, clinical operability, treatment safety, etc. of radiofrequency ablation. The ophthalmic radiofrequency ablation instrument can realize accurate radiofrequency ablation of the eye tissue, treat eye diseases such as glaucoma, and make the clinical operation more convenient and safer.
[0004] For example, the ciliary body radiofrequency ablation surgery is to ablate the ciliary body tissue by radiofrequency ablation technology to inhibit the production of aqueous humor, so as to treat glaucoma. The difficulty of the surgery varies with the experience and technical level of the doctor. Generally speaking, this surgery needs to be mastered through certain training and practice. In order to help the doctor practice the method and accurately insert the electrode needle into the intraocular position requiring radiofrequency ablation, such as the ciliary body, lens and other parts, it is urgent to develop an ophthalmic radiofrequency ablation training model to facilitate the doctor to practice the method and accumulate experience, and to locate the ablation site. CONTENT OF THE INVENTION
[0005] To solve the above technical problems, the present application provides an ophthalmic radiofrequency ablation training model for assisting the ophthalmic radiofrequency ablation electrode of the ophthalmic radiofrequency ablation instrument to simulate puncture training of the eyeball. The ophthalmic radiofrequency ablation electrode has an electrode needle and an impedance detection unit electrically connected with the electrode needle. The ophthalmic radiofrequency ablation training model comprises a base, an eyeball model fixed to the base, the eyeball model comprising at least a simulated sclera structure, a simulated ciliary body structure and simulated aqueous humor. The simulated sclera structure and the simulated ciliary body structure are formed of a conductive material. The simulated sclera structure has a first impedance range K1, the simulated ciliary body structure has a second impedance range K2, and the simulated aqueous humor has a third impedance range K3. The first impedance range K1, the second impedance range K2 and the third impedance range K3 have different value ranges. When the needle tip of the electrode needle is inserted into the simulated sclera structure, the simulated ciliary body structure and the simulated aqueous humor, the impedance detection unit can feedback the impedance values of different contact positions.
[0006] In some embodiments, the first impedance range K1, the second impedance range K2 and the third impedance range K3 satisfy the following limits: K1 >= 5000 ohm, 1500 ohm <= K2 <= 3000 ohm, K3 < 1500 ohm.
[0007] In some embodiments, the eyeball model further comprises a non-conductive simulated cornea structure, a simulated vitreous structure, a simulated iris structure, and a simulated lens structure.
[0008] In some embodiments, the simulated sclera structure is detachably connected with the simulated ciliary body structure, the simulated cornea structure, the simulated vitreous structure, and the simulated iris structure.
[0009] In some embodiments, the simulated sclera structure has multiple types with different wall thicknesses.
[0010] In some embodiments, the simulated sclera structure has a liquid injection port for injecting the simulated aqueous humor and a liquid discharge port for discharging the simulated aqueous humor.
[0011] In some embodiments, the simulated aqueous humor is physiological saline.
[0012] In some embodiments, the top of the base has a fixing groove, and the simulated sclera structure is detachably fixed in the fixing groove.
[0013] In some embodiments, the bottom of the base is a suction disc structure.
[0014] In some embodiments, the bottom of the base has a magnetic attraction member.
[0015] The application has the following beneficial effects: The utility model discloses an ophthalmic radio frequency ablation training model which is used for assisting the ophthalmic radio frequency ablation electrode of the ophthalmic radio frequency ablation instrument to simulate puncture training on the eyeball, and the ophthalmic radio frequency ablation electrode has an electrode needle and an impedance detection unit electrically connected with the electrode needle. The ophthalmic radio frequency ablation training model comprises a base and an eyeball model, the eyeball model comprises a simulated sclera structure, a simulated ciliary body structure and simulated aqueous humor, the simulated sclera structure and the simulated ciliary body structure are formed of a conductive material, the simulated sclera structure has a first impedance range, the simulated ciliary body structure has a second impedance range, and the simulated aqueous humor has a third impedance range. When the needle tip of the electrode needle penetrates into the simulated sclera structure, the simulated ciliary body structure and the simulated aqueous humor, the impedance detection unit can feed back the impedance value, and the operator can judge whether the penetration position and the penetration depth meet the requirements according to the impedance value. 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 embodiments description. Obviously, the drawings in the following description only some of the embodiments of the application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor.
[0017] Figure 1 is a perspective view of an embodiment of an ophthalmic radiofrequency ablation electrode;
[0018] Figure 2 is a front view of the ophthalmic radiofrequency ablation training model of the utility model;
[0019] Figure 3 is a perspective view of the base of the ophthalmic radiofrequency ablation training model of the utility model;
[0020] Figure 4 is a sectional view of the eyeball model of the ophthalmic radiofrequency ablation training model of the utility model. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other alternative embodiments obtained by those skilled in the art without creative labor are within the protection scope of the application.
[0022] The application discloses an ophthalmic radiofrequency ablation training model 100, which is used for assisting an ophthalmic radiofrequency ablation instrument in simulating puncture training of an eyeball and simulating a real ophthalmic use environment. The ophthalmic radiofrequency ablation instrument has an electrode needle, and an operator can practice radiofrequency ablation operation skills by means of the electrode needle being inserted into the ophthalmic radiofrequency ablation training model 100, so as to achieve the purpose of quickly and accurately inserting the electrode needle into target ablation tissue, such as a ciliary body and the like, thereby accumulating experience in simulation training, quickly positioning an ablation site, laying a foundation for actually performing surgery in an eyeball of a human eye, and improving surgery efficiency.
[0023] In the application, the ophthalmic radiofrequency ablation instrument comprises an ablation host (not shown in the figure) and an ophthalmic radiofrequency ablation electrode 200 electrically connected with the ablation host, and the ablation host can provide energy to the ophthalmic radiofrequency ablation electrode 200. Figure 1As shown, 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 the tip of the electrode needle protruding from the adjustment sleeve 220. It can be inserted into the eye to perform radiofrequency ablation on the ciliary body. At the same time, the operator can use the electrode needle 230 to perform puncture training on the ophthalmic radiofrequency ablation training model 100.
[0024] Furthermore, the ophthalmic radiofrequency ablation device has an impedance detection unit, which is electrically connected to the electrode needle and is set in the ophthalmic radiofrequency ablation electrode 200 or the ablation host. When the tip of the electrode needle 230 is inserted into the simulated scleral structure 21, simulated ciliary body structure 22 and simulated aqueous humor 23 of the ophthalmic radiofrequency ablation training model 100, the impedance detection unit can provide feedback on the impedance value. The feedback resistance value is used to determine whether the tip of the electrode needle 230 has successfully inserted into the simulated ciliary body structure 22. If the feedback resistance value is not within the second impedance range K2 corresponding to the simulated ciliary body structure 22, the operator can adjust the insertion position and depth of the electrode needle 230 to meet the surgical requirements.
[0025] like Figures 2 to 4 As shown, as an embodiment of the ophthalmic radiofrequency ablation training model 100, the ophthalmic radiofrequency ablation training model 100 includes a base 10 and an eyeball model 20, wherein the eyeball model 20 is fixed to the base 10; the eyeball model 20 includes at least a simulated scleral structure 21, a simulated ciliary body structure 22, and a simulated aqueous humor 23; the simulated scleral structure 21 and the simulated ciliary body structure 22 are both formed of conductive material, the simulated scleral structure 21 has a first impedance range K1, the simulated ciliary body structure 22 has a second impedance range K2, and the simulated aqueous humor 23 has a third impedance range K3, the values of the first impedance range K1, the second impedance range K2, and the third impedance range K3 are different; when the tip of the electrode needle 230 is inserted into the simulated scleral structure 21, the simulated ciliary body structure 22, and the simulated aqueous humor 23, the impedance detection unit can feed back the impedance values of different contact points of the needle tip, and the measured different impedance values help the operator understand whether the insertion position and insertion depth are appropriate.
[0026] In this embodiment, the simulated scleral structure 21, simulated ciliary body structure 22, and simulated aqueous humor 23 are distributed in the eyeball model 20 in a manner that corresponds to the distribution of the corresponding tissues in the human eyeball, thereby simulating the real ophthalmic use environment.
[0027] When the operator finds the position of the simulated ciliary body structure 22 on the surface of the eyeball model 20, i.e. determines the ablation point, the needle tip of the electrode needle 230 is aimed at the ablation point and is pierced into the eyeball model 20. As the piercing depth of the electrode needle 230 increases, the needle tip of the electrode needle 230 successively contacts the simulated sclera structure 21, the simulated ciliary body structure 22 and the simulated aqueous humor 23. When the impedance value fed back by the impedance detection unit is within the first impedance range K1, it indicates that the piercing depth of the electrode needle is too shallow and the position of the needle tip is within the simulated sclera structure 21, and the piercing depth of the electrode needle 230 needs to be further increased. When the impedance value is within the second impedance range K2, it indicates that the piercing depth of the electrode needle is appropriate and the position of the needle tip is within the simulated ciliary body structure 22, and the simulated ablation can be performed. When the impedance value is within the third impedance range K3, it indicates that the piercing depth of the electrode needle is too deep and the position of the needle tip is within the simulated aqueous humor 23, and the piercing depth of the electrode needle 230 needs to be reduced.
[0028] In addition, if the operator adjusts the piercing depth of the electrode needle 230 and still cannot make the measured impedance value within the second impedance range K2, it indicates that the piercing position of the electrode needle 230 is wrong and the position of the simulated ciliary body structure 22 needs to be repositioned on the eyeball model 20.
[0029] In the embodiment, the first impedance range K1, the second impedance range K2 and the third impedance range K3 satisfy the following limits: K1≥5000Ω, 1500Ω≤K2≤3000Ω, K3<1500Ω.
[0030] Further, in order to more accurately understand the position of the needle tip of the electrode needle 230, the ophthalmic radiofrequency ablation training model 100 further has a fourth impedance range K4, 3000Ω<K4<5000Ω. When the impedance value is within the fourth impedance range K4, it indicates that a part of the needle tip of the electrode needle 230 pierces into the simulated ciliary body structure 22, but the main part of the needle tip is located within the simulated sclera structure 21.
[0031] In the embodiment, the simulated sclera structure 21 and the simulated ciliary body structure 22 are both made of conductive silicone, and the impedance value of the conductive silicone depends on the type and addition proportion of the conductive filler; therefore, the type and / or addition proportion of the conductive filler in the simulated sclera structure 21 and the simulated ciliary body structure 22 are different.
[0032] In the embodiment, the simulated aqueous humor 23 is made of a conductive liquid, such as physiological saline.
[0033] Further, in order to make the structural form of the eyeball model 20 more close to the human eyeball, the eyeball model 20 further includes a non-conductive simulated cornea structure 24, a simulated vitreous body structure 25, a simulated iris structure 26 and a simulated lens structure 27. Figure 4In the embodiment, the simulated cornea structure 24 and the simulated sclera structure 21 are the outermost structures of the eyeball model 20, and the simulated aqueous humor 23, the simulated vitreous structure 25, the simulated iris structure 26 and the simulated lens structure 27 are located inside the eyeball model 20, and the simulated lens structure 27 is suspended in the simulated aqueous humor 23.
[0034] In some embodiments, in order to avoid the movement of the simulated lens structure 27 in the simulated aqueous humor 23, the simulated lens structure 27 is detachably mounted on the top of the simulated vitreous structure 25.
[0035] In the embodiment, the simulated cornea structure 24 is made of transparent material, and the simulated vitreous structure 25 is made of polyacrylic hard plastic.
[0036] Further, due to the difference between human eyeballs, the thickness of the sclera is not the same; in order to make the eyeball model 20 truly reflect this difference, the simulated sclera structure 21 is designed to have multiple models with different wall thicknesses, such as 0.6mm, 0.8mm, 1.0mm, etc.
[0037] In the embodiment, the simulated sclera structure 21 is fixed by gluing with the simulated ciliary body structure 22, the simulated cornea structure 24, the simulated vitreous structure 25 and the simulated iris structure 26. In some embodiments, in order to facilitate the assembly and disassembly of the components of the eyeball model 20, the simulated sclera structure 21 is detachably connected with the simulated ciliary body structure 22, the simulated cornea structure 24, the simulated vitreous structure 25 and the simulated iris structure 26.
[0038] Further, in order to facilitate the addition of the simulated aqueous humor 23 in the eyeball model 20, the simulated sclera structure 21 has a liquid injection port (not shown in the figure), through which the operator can inject the simulated aqueous humor 23 into the eyeball model 20; preferably, the liquid injection port has a one-way valve, so that the simulated aqueous humor 23 will not leak after being injected; in order to remove or replace the simulated aqueous humor 23 in the eyeball model 20, the simulated sclera structure 21 also has a liquid discharge port (not shown in the figure), which is used to discharge the simulated aqueous humor 23; the liquid discharge port can be sealed by a damping plug, which is removed when discharging the liquid.
[0039] Further, in order to facilitate the fixation of the eyeball model 20, the top of the base 10 has a fixing groove 11, and the simulated sclera structure 21 is detachably fixed in the fixing groove 11; for example, a buckle is arranged at the part of the simulated sclera structure 21 in contact with the fixing groove 11, and a clamping groove adapted to the buckle is arranged in the fixing groove 11, so that the buckle can be inserted into the clamping groove; or a magnetic member is arranged at the part of the simulated sclera structure 21 in contact with the fixing groove 11, and the magnetic member is fixedly connected with the fixing groove 11 by magnetic attraction.
[0040] Further, in order to facilitate the fixation of the ophthalmic radiofrequency ablation training model 100 on the experiment table, the bottom of the base 10 is a suction disc structure, and the bottom of the base 10 is suctioned on the surface of the experiment table after being pressed by the operator, and will not be offset; when the operator performs simulation practice, the ophthalmic radiofrequency ablation training model 100 will not be offset; or in some embodiments, alternatively, the bottom of the base 10 has a magnetic suction member, and the bottom of the base 10 is magnetically suctioned and fixed to the surface of the experiment table.
[0041] Further, in the present embodiment, the base 10 can be made of polyacrylic acid hard plastic.
[0042] Further, in order to increase the training range of the ophthalmic radiofrequency ablation training model 100, simulation structures of other intraocular tissues can be added in the ophthalmic radiofrequency ablation training model 100, thereby improving the training range, so that the operator can perform puncture training on each part on the ophthalmic radiofrequency ablation training model 100; at the same time, the ophthalmic radiofrequency ablation training model 100 is also applicable to simulate other surgical scenarios of the eye.
[0043] Finally, it needs to be explained that if the present application has involved directional indications (such as up, down, left, right, front, back, etc.) in the embodiments, the directional indications are only used to explain the relative position relationship, motion condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.
[0044] In addition, if the present application has involved the description of "first", "second", etc. in the embodiments, the description of "first", "second", etc. 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 explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.
[0045] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. An ophthalmic radiofrequency ablation training phantom, comprising: An ophthalmic radiofrequency ablation electrode for assisting an ophthalmic radiofrequency ablation instrument is used in conjunction with an ophthalmic radiofrequency ablation electrode for simulating puncture training on an eyeball model, the ophthalmic radiofrequency ablation electrode having an electrode needle and an impedance detection unit electrically connected to the electrode needle; wherein the ophthalmic radiofrequency ablation training model comprises: a base; an eyeball model fixed to the base; the eyeball model at least includes a simulated sclera structure, a simulated ciliary body structure, and simulated aqueous humor; the simulated sclera structure and the simulated ciliary body structure are both formed of conductive material, the simulated sclera structure has a first impedance range K1, the simulated ciliary body structure has a second impedance range K2, and the simulated aqueous humor has a third impedance range K3, the first impedance range K1, the second impedance range K2, and the third impedance range K3 have different value ranges; when the needle tip of the electrode needle penetrates into the simulated sclera structure, the simulated ciliary body structure, and the simulated aqueous humor, the impedance detection unit can feedback impedance values of different contact parts.
2. The ophthalmic radiofrequency ablation training phantom of claim 1, wherein, The first impedance range K1, the second impedance range K2, and the third impedance range K3 satisfy the following definitions: K1≥5000Ω, 1500Ω≤K2≤3000Ω, and K3<1500Ω.
3. The ophthalmic radiofrequency ablation training phantom of claim 1, wherein, The eyeball model further includes non-conductive simulated cornea structure, simulated vitreous structure, simulated iris structure, and simulated lens structure.
4. The ophthalmic radiofrequency ablation training phantom of claim 3, wherein, The simulated sclera structure is detachably connected with the simulated ciliary body structure, the simulated cornea structure, the simulated vitreous structure, and the simulated iris structure.
5. The ophthalmic radiofrequency ablation training phantom of claim 1, wherein, The simulated sclera structure has multiple types with different wall thicknesses.
6. The ophthalmic radiofrequency ablation training phantom of claim 1, wherein, The simulated sclera structure has a liquid injection port and a liquid discharge port, the liquid injection port is used for injecting the simulated aqueous humor, and the liquid discharge port is used for discharging the simulated aqueous humor.
7. The ophthalmic radiofrequency ablation training phantom of claim 6, wherein, The simulated aqueous humor is physiological saline.
8. The ophthalmic radiofrequency ablation training phantom of claim 1, wherein, The top of the base has a fixing groove, and the simulated sclera structure is detachably fixed in the fixing groove.
9. The ophthalmic radiofrequency ablation training phantom of any of claims 1 to 8, wherein, The bottom of the base is a suction disc structure.
10. The ophthalmic radiofrequency ablation training phantom of any of claims 1 to 8, wherein, The bottom of the base has a magnetic attraction member.