Eye retrobulbar anesthesia training device and operation method thereof

Abstract

The invention discloses an eye retrobulbar anesthesia training device and an operation method thereof. According to the embodiment of the invention, the eye axis adjusting mechanism is arranged in the eyeball model, the eye axis adjusting mechanism comprises the middle axis screw rod, the knob turntable and the fixing cap, the eye axis length of the eyeball model is adjusted by adjusting the distance between the knob turntable and the fixing cap, and injection training can be performed on the retrobulbar conical sac cavity structure under the condition of different eye axis lengths; injection deviation generated during eye retrobulbar anesthesia injection due to different lengths of eye axes can be prevented through training, and the safety of eye retrobulbar anesthesia operation is improved.

Description

Technical Field

[0001] This application relates to the technical field of medical teaching aids, and particularly relates to an ophthalmic retrobulbar anesthesia training device and an operation method thereof. Background Art

[0002] Common intraorbital injections in ophthalmology include retrobulbar, peribulbar, and anterior ethmoidal injections, etc. The drug is injected around the eyeball or at the optic nerve to reach the therapeutic concentration. It is mostly used for the anesthesia of posterior uveitis, fundus vascular structure lesions, and intraocular surgeries, etc., and has the advantages of quick curative effect and rapid drug administration. It is a common treatment method and anesthesia method in ophthalmology. Ophthalmic retrobulbar injection is a common nursing technical operation in ophthalmology and is mostly used for treating posterior eye diseases in clinical practice. However, this operation is difficult, highly professional, and has a certain degree of danger. During the learning process, a large amount of training is required. Currently, the training of intraorbital injection still relies on the method of directly operating on the patient's eye; this training method not only exposes the patient to the risk of a high complication rate but also poses a great medical hidden danger. When using the existing simulation eye models for training, the axial length of the eye is fixed. During actual operation, due to the different axial lengths of different individuals, injection deviation will occur during ophthalmic retrobulbar anesthesia injection. Therefore, there is an urgent need for a simulation eye model that can be used for ophthalmic retrobulbar anesthesia injection training to conduct anesthesia drug injection training for different axial length situations. Summary of the Invention

[0003] The embodiments of this application provide an ophthalmic retrobulbar anesthesia training device and an operation method thereof, which can solve the technical problem that when using the existing simulation eye models for training, the axial length of the eye is fixed, and during actual operation, due to the different axial lengths of different individuals, injection deviation will occur during ophthalmic retrobulbar anesthesia injection, resulting in medical hidden dangers.

[0004] The embodiments of this application provide an ophthalmic retrobulbar anesthesia training device, including: An eyeball model, including an eyeball outer wall and an annular water sac inside the ball; the annular water sac inside the ball is arranged inside the eyeball outer wall, the annular water sac inside the ball is provided with an axial through hole, and the eyeball outer wall is provided with a front through hole and a rear through hole corresponding to the axial through hole; An axial length adjustment mechanism, including a central shaft screw, a knob turntable, and a fixing cap; the central shaft screw is arranged inside the axial through hole, the first end of the central shaft screw passes through the front through hole and is threadedly connected to the knob turntable, the second end of the central shaft screw passes through the rear through hole and is connected to the fixing cap, and both the knob turntable and the fixing cap are in contact with the eyeball outer wall. The axial length of the eyeball model is adjusted by adjusting the distance between the knob turntable and the fixing cap; A retrobulbar muscle cone cavity structure, which is connected to the eyeball model in a conical shape and is located on one side of the fixing cap; The orbital bone structure is provided with an orbital groove, and the eyeball model, the eye axis adjustment mechanism and the retrobulbar muscle cone cavity structure are arranged in the orbital groove, and the knob turntable is located at the notch position of the orbital groove.

[0005] In some embodiments, the eye axis adjustment mechanism further includes: A ball bearing, including a turntable outer shell and a turntable inner ring, the turntable outer shell is fixedly connected to the front through hole on the outer wall of the eyeball, the turntable inner ring is threadedly connected to the central axis screw, and the turntable inner ring is connected to the knob turntable.

[0006] In some embodiments, the first end of the central axis screw is provided with an external thread, the range of the external thread is 10 mm, the pitch of the external thread is 1 mm, the knob turntable is arranged with an internal thread threadedly connected to the external thread, and the turntable inner ring is provided with an eye axis length scale.

[0007] In some embodiments, the ophthalmic retrobulbar anesthesia training device further includes: The extraocular muscle structure is connected to the outside of the outer wall of the eyeball and is arranged to cover the retrobulbar muscle cone cavity structure. The vertex of the cone formed by the side of the extraocular muscle structure facing away from the eyeball model forms the orbital apex. The extraocular muscle structure includes the superior rectus muscle, the lateral rectus muscle, the inferior rectus muscle and the medial rectus muscle distributed around the outer wall of the eyeball. The outer surface of the extraocular muscle structure is provided with a magnetic attraction member, and the extraocular muscle structure and the orbital groove are magnetically fixed; The orbital apex fluid collection tray is arranged at the orbital apex position, and the edge of the orbital apex fluid collection tray is connected to the extraocular muscle structure; A liquid collection tube, the retrobulbar muscle cone cavity structure includes a muscle cone and a muscle cone cavity, the muscle cone cavity is located between the muscle cones, the first end of the liquid collection tube is connected to the orbital apex fluid collection tray and is communicated with the muscle cone cavity, and the second end of the liquid collection tube is provided with a first on-off valve.

[0008] In some embodiments, the ophthalmic retrobulbar anesthesia training device further includes: An intraocular perfusion tube, the first end of the intraocular perfusion tube passes through the retrobulbar muscle cone cavity structure and is communicated with the intraocular annular water sac, and the second end of the intraocular perfusion tube is provided with a second on-off valve.

[0009] In some embodiments, the first end of the intraocular perfusion tube is provided with a plurality of optic nerve aqueducts, the fixing cap is provided with a plurality of first fixing holes, the optic nerve aqueducts are hermetically connected to the first fixing holes and pass through the outer wall of the eyeball to be communicated with the intraocular annular water sac, the orbital apex fluid collection tray is provided with a second fixing hole, and the second end of the intraocular perfusion tube is hermetically connected to the second fixing hole.

[0010] In some embodiments, the ophthalmic retrobulbar anesthesia training device further includes: An orbital septum structure is disposed within the orbital groove. A peribulbar space is formed between the eyeball model, the retrobulbar muscle cone cavity structure, and the orbital bone structure, and the orbital septum structure fills the peribulbar space. A vascular structure is disposed within the orbital septum structure, and both ends of the vascular structure extend to the outer surface of the orbital bone structure to form vascular inlets and outlets.

[0011] In some embodiments, the ophthalmic retrobulbar anesthesia training device further includes: A sealing plug is disposed at the bottom of the orbital bone structure, and a liquid collecting tube and an intraocular perfusion tube are fixedly sealed within the sealing plug. A drainage tube is disposed on the sealing plug, and the drainage tube communicates with the peribulbar space; the sealing plug collects the liquid in the peribulbar space and flows out from the drainage tube.

[0012] In some embodiments, the ophthalmic retrobulbar anesthesia training device further includes: An eyelid structure is connected to the orbital bone structure and covers the orbital groove. The eyelid structure is provided with an eyelid slit, and the eyelid slit exposes the knob turntable; the eyelid structure includes an inner silicone layer, a sponge layer, and an outer silicone layer. The inner silicone layer is provided with magnetic blocks, and the eyelid structure is magnetically adsorbed on the orbital bone structure.

[0013] The present application also provides an operation method for the aforementioned ophthalmic retrobulbar anesthesia training device, which includes: Setting the first color liquid to be filled in the intraocular annular water sac. When anesthetizing the retrobulbar muscle cone cavity structure, use a syringe to draw the second color liquid to simulate anesthetic. After inserting the syringe needle and before injection, aspirate. If the first color liquid is aspirated, it indicates that the needle tip of the syringe has entered the eyeball model, and the operation is determined to be unqualified. If air is aspirated, inject the second color liquid. When the needle is withdrawn, detect whether the second color liquid drains from the retrobulbar muscle cone cavity structure. If the second color liquid does not drain, it indicates that the second color liquid has not entered the retrobulbar muscle cone cavity structure, and the anesthetic operation is determined to be unqualified. If the second color liquid drains, the anesthetic operation is determined to be qualified. When the needle is withdrawn, detect whether the second color liquid drains from the peribulbar space. If the second color liquid drains, it indicates that the second color liquid has not entered the retrobulbar muscle cone cavity structure, and the anesthetic operation is determined to be unqualified.

[0014] The postbulbar anesthesia training device for eyes and its operation method provided by the embodiments of the present application are provided with an axial length adjustment mechanism inside the eyeball model. The axial length adjustment mechanism includes a central shaft screw, a knob turntable and a fixing cap. By adjusting the distance between the knob turntable and the fixing cap, the axial length of the eyeball model can be adjusted, and injection training can be carried out on the retrobulbar muscle cone capsule cavity structure under different axial lengths. It can prevent injection deviation caused by different axial lengths during postbulbar anesthesia injection of the eyes through training, and improve the safety of postbulbar anesthesia operation of the eyes. Description of the Drawings

[0015] The following will combine the drawings and describe the specific embodiments of the present application in detail, making the technical solutions and other beneficial effects of the present application obvious.

[0016] Figure 1 It is a schematic structural diagram of the postbulbar anesthesia training device for eyes provided by the embodiments of the present application.

[0017] Figure 2 It is a top view of the postbulbar anesthesia training device for eyes provided by the embodiments of the present application.

[0018] Figure 3 It is a side view of the postbulbar anesthesia training device for eyes provided by the embodiments of the present application.

[0019] Figure 4 It is a cross-sectional view of the postbulbar anesthesia training device for eyes provided by the embodiments of the present application.

[0020] Figure 5 It is a schematic partial structural diagram of the postbulbar anesthesia training device for eyes provided by the embodiments of the present application.

[0021] Figure 6 is Figure 5 a cross-sectional view of a partial structure of the postbulbar anesthesia training device for eyes provided.

[0022] Figure 7 It is a schematic diagram of the pipeline structure of the postbulbar anesthesia training device for eyes provided by the embodiments of the present application.

[0023] Figure 8 It is a schematic structural diagram of the axial length adjustment mechanism provided by the embodiments of the present application.

[0024] Figure 9 It is a schematic structural diagram of the axial length adjustment mechanism provided in the eyeball model of the postbulbar anesthesia training device for eyes provided by the embodiments of the present application.

[0025] The labels in the figure are as follows: Eye model 1, outer wall of the eyeball 111, annular water sac inside the ball 112, axial through hole 121, eye axis adjustment mechanism 2, central axis screw 21, external thread 211, knob turntable 22, fixing cap 23, first fixing hole 231, ball bearing 24, turntable housing 241, inner ring of the turntable 242, posterior muscle cone sac cavity structure of the eyeball 3, orbital bone structure 4, orbital groove 41, orbital apex effusion tray 5, second fixing hole 51, liquid collecting tube 6, perfusion tube inside the ball 7, optic nerve aqueduct 71, adapter 72, extraocular muscle structure 8, superior rectus muscle 81, lateral rectus muscle 82, inferior rectus muscle 83, medial rectus muscle 84, orbital septum structure 9, vascular structure 10, inlet and outlet of blood vessels 101, eyelid structure 11, sealing plug 12, drainage tube 13. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present application.

[0027] In the description of the present application, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0028] The embodiment of the present application provides an ophthalmic retrobulbar anesthesia training device. The ophthalmic retrobulbar anesthesia training device can perform anesthesia drug injection training for different eye axis length situations, meet the teaching needs of ophthalmic retrobulbar anesthesia injection training, and standardize the learning operation. The applicable scenarios are: clinical teaching bases, standardized training bases for practicing physicians, and ophthalmic hospitals. In retrobulbar anesthesia, accidental puncture of the eyeball by a needle occurs from time to time, which is a relatively serious complication. Through this device, it is possible to determine whether the needle has accidentally entered the eyeball by aspirating the color of the liquid.

[0029] Specifically, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6, the retrobulbar anesthesia training device for the eye includes: an eyeball model 1, an eye axis adjustment mechanism 2, a retrobulbar muscle cone capsule cavity structure 3, and an orbital bone structure 4. The eyeball model 1 includes an eyeball outer wall 111 and an inner spherical annular water sac 112; the inner spherical annular water sac 112 is arranged inside the eyeball outer wall 111, the inner spherical annular water sac 112 is provided with an axial through hole 121, and the eyeball outer wall 111 is provided with a front through hole and a rear through hole corresponding to the axial through hole 121; the eye axis adjustment mechanism 2 includes a central axis screw 21, a knob turntable 22, and a fixing cap 23; the central axis screw 21 is arranged inside the axial through hole 121, the first end of the central axis screw 21 passes through the front through hole and is threadedly connected to the knob turntable 22, the second end of the central axis screw 21 passes through the rear through hole and is connected to the fixing cap 23, and both the knob turntable 22 and the fixing cap 23 are in contact with the eyeball outer wall 111, and the eye axis length of the eyeball model 1 is adjusted by adjusting the distance between the knob turntable 22 and the fixing cap 23; the retrobulbar muscle cone capsule cavity structure 3 is connected to the eyeball model 1 in a conical shape and is located on one side of the fixing cap 23; the orbital bone structure 4 is provided with an orbital groove 41, the eyeball model 1, the eye axis adjustment mechanism 2, and the retrobulbar muscle cone capsule cavity structure 3 are arranged inside the orbital groove 41, and the knob turntable 22 is located at the notch position of the orbital groove 41.

[0030] Among them, the orbital bone structure 4 can simulate the actual external structure of the eye, and the front through hole of the eyeball outer wall 111 is set corresponding to the through hole position, which can facilitate the adjustment of the eye axis length of the eyeball model 1, and the water filling amount of the inner spherical annular water sac 112 can adaptively adjust the diameter size of the eyeball model 1. By adjusting the eye axis length through the eye axis adjustment mechanism 2, the retrobulbar anesthesia operation of normal people and high-risk patients with extremely long eye axes in high myopia can be simulated.

[0031] An eye axis adjustment mechanism 2 is arranged inside the eyeball model 1. The eye axis adjustment mechanism 2 includes a central axis screw 21, a knob turntable 22, and a fixing cap 23. By adjusting the distance between the knob turntable 22 and the fixing cap 23 to adjust the eye axis length of the eyeball model 1, injection training can be carried out on the retrobulbar muscle cone capsule cavity structure 3 under different eye axis lengths, and injection deviation caused by different eye axis lengths during retrobulbar anesthesia injection of the eye can be prevented through training, improving the safety of retrobulbar anesthesia operation of the eye.

[0032] Among them, the orbital bone structure 4 selects the right eye orbit, and its structure conforms to human anatomy. The inner surface of the orbit is in an inverted quadrangular pyramid shape, with a certain curvature, the inner wall is steep, the outer wall is inclined, the upper and lower walls are relatively symmetrical, the nasal side is high, and the temporal side is low. In retrobulbar anesthesia, the key step to determine the injection point is to touch the edge of the orbital bone structure 4, which is a circular curve, with the upper end higher than the lower end and the nasal side higher than the temporal side. The conventional injection points for retrobulbar anesthesia are at the outer 1 / 3 of the middle of the lower orbital margin and the inner 1 / 3 of the middle of the upper orbital margin.

[0033] Please refer to Figure 6 , Figure 8 , Figure 9 , in some embodiments, the eye axis adjusting mechanism 2 further includes a ball bearing 24, and the ball bearing 24 includes a turntable housing 241 and a turntable inner ring 242. The turntable housing 241 is fixedly connected to the front through hole of the outer wall 111 of the eyeball, the turntable inner ring 242 is threadedly connected to the central axis screw 21, and the turntable inner ring 242 is connected to the knob turntable 22.

[0034] Among them, adopting the connection method of the ball bearing 24 can achieve structural stability and avoid the torsion generated when the turntable inner ring 242 rotates along the central axis screw 21.

[0035] Please refer to Figure 6 , Figure 8 , Figure 9 , in some embodiments, the first end of the central axis screw 21 is provided with an external thread 211, the range of the external thread 211 is 10 mm, the pitch of the external thread 211 is 1 mm, the knob turntable 22 is provided with an internal thread threadedly connected to the external thread 211, and the turntable inner ring 242 is provided with an eye axis length scale. Specifically, the turntable inner ring 242 meshes with the central axis screw 21 through a straight bevel gear, and the gear set is connected to the scale to display the eye axis length. It can be understood that the thread control range can be set at 22 - 32 mm. When the turntable inner ring 242 rotates one circle along the central axis screw 21, it is 1 mm, and the number of circles can be measured and converted into the eye axis length to form an eye axis length scale. Among them, the adjustment of the eye axis length can make the eye axis length scale more accurate by using a gear set.

[0036] Please refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , in some embodiments, the eye posterior subtenon's block training device further includes: The extraocular muscle structure 8, which is connected to the outside of the outer wall 111 of the eyeball and is arranged to wrap the posterior muscular cone cavity structure 3. The vertex of the cone formed by the side of the extraocular muscle structure 8 facing away from the eyeball model 1 forms the orbital apex. The extraocular muscle structure 8 includes the superior rectus muscle 81, the lateral rectus muscle 82, the inferior rectus muscle 83, and the medial rectus muscle 84 distributed around the outer wall 111 of the eyeball. The outer surface of the extraocular muscle structure 8 is provided with a magnetic part, and the extraocular muscle structure 8 and the orbital groove 41 are magnetically fixed to quickly install and disassemble the eyeball component; The orbital apex fluid collecting tray 5, which is arranged at the orbital apex position, and the edge of the orbital apex fluid collecting tray 5 is connected to the extraocular muscle structure 8; A liquid collecting tube 6, the retrobulbar muscle cone sac cavity structure includes a muscle cone and a muscle cone sac cavity, the muscle cone sac cavity is located between the muscle cones, the first end of the liquid collecting tube 6 is connected to the orbital apex liquid collecting tray 5 and communicates with the muscle cone sac cavity of the retrobulbar muscle cone sac cavity structure 3, and the second end of the liquid collecting tube 6 is provided with a first switching valve.

[0037] Among them, the orbital apex liquid collecting tray 5 is located at the position of the "common tendon ring" at the orbital apex of the orbit and is the bottom end of the retrobulbar muscle cone sac cavity structure 3, collecting the liquid in the retrobulbar muscle cone sac cavity structure 3 and introducing it into the liquid collecting tube 6. When injecting liquid into the retrobulbar muscle cone sac cavity structure 3, it can be aspirated back to ensure that there is no "blood", and when injecting anesthetic liquid, the anesthetic liquid can be collected in the liquid collecting tube 6.

[0038] Please refer to Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 , in some embodiments, the ophthalmic retrobulbar anesthesia training device further includes: An intraocular perfusion tube 7, the first end of the intraocular perfusion tube 7 passes through the retrobulbar muscle cone sac cavity structure 3 and communicates with the intraocular annular water sac 112, and the second end of the intraocular perfusion tube 7 is provided with a second switching valve.

[0039] When performing retrobulbar anesthesia, if the anesthetic liquid does not flow out of the liquid collecting tube 6 but flows out of the intraocular perfusion tube 7, it indicates that the anesthetic position is incorrect, that is, the intraocular perfusion tube 7 fails to correctly enter the intramuscular space of the retrobulbar muscle cone sac cavity structure 3.

[0040] Please refer to Figure 6 、 Figure 7 , in some embodiments, the first end of the intraocular perfusion tube 7 is provided with a plurality of optic nerve aqueducts 71, the fixed cap 23 is provided with a plurality of first fixing holes 231, the optic nerve aqueducts 71 are hermetically connected to the first fixing holes 231 and pass through the outer wall 111 of the eyeball to communicate with the intraocular annular water sac 112, the orbital apex liquid collecting tray 5 is provided with a second fixing hole 51, and the second end of the intraocular perfusion tube 7 is hermetically connected to the second fixing hole 51.

[0041] Among them, the optic nerve aqueducts 71 are arranged around the central axis screw 21, converge into an inner capsule water outlet pipe through an adapter 72, can simulate the optic nerve, and there are air vents on the adapter 72 to balance the air pressure. The intraocular annular water sac 112 is made of an elastic silicone material that can be self-sealing after being punctured, and the intraocular perfusion tube 7 is made of a rubber tube that can be self-sealing after being punctured, meeting the requirements of repeated use.

[0042] Please refer to Figure 1 , in some embodiments, the ophthalmic retrobulbar anesthesia training device further includes: The orbital septum structure 9 is disposed within the orbital groove 41. A peribulbar space is formed between the eyeball model 1, the retrobulbar muscle cone sac cavity structure 3, and the orbital bone structure 4, and the orbital septum structure 9 fills the peribulbar space. The vascular structure 10 is disposed within the orbital septum structure 9, and both ends of the vascular structure 10 extend to the outer surface of the orbital bone structure 4 to form vascular inlets and outlets 101.

[0043] Among them, the extraocular muscle structure 8 should be made of a slightly harder silicone material to distinguish the feel, because during retrobulbar anesthesia, it passes through the muscle space and the muscle cannot be injured. The orbital septum structure 9 is membranous, and the orbital septum structure 9 is preferably made of silicone material, having a sense of puncture breakthrough, covering the peribulbar space of the eyeball model 1, and is adhesively bonded to the orbital bone structure 4 and the eyeball model 1.

[0044] Among them, the vascular structure 10 mimics important blood vessels that are easily damaged around the eye, runs through the orbit, simulates the ophthalmic artery - supraorbital artery - superior ophthalmic vein, and is preferably made of a plastic rubber hose, crawling along the orbital wall and behind the eyeball model 1 to form a loop, and can be filled with red liquid to simulate blood. When injecting anesthetic, pull back the syringe. If red liquid is drawn, it means that the blood vessel structure 10 has been punctured, and the needle should be withdrawn and the operation should be restarted. Injection of the drug is not allowed. A stopcock clip is provided at the inlets and outlets of the vascular structure 10 to prevent the leakage of red liquid.

[0045] As Figure 3 、 Figure 4 shown, in some embodiments, the ocular retrobulbar anesthesia training device further includes: A sealing plug 12 is disposed at the bottom of the orbital bone structure 4, and the collecting tube 6 and the intraocular perfusion tube 7 are fixedly sealed within the sealing plug 12. A drainage tube 13 is disposed on the sealing plug 12, and the drainage tube 13 communicates with the peribulbar space; the sealing plug 12 collects the liquid in the peribulbar space and flows out from the drainage tube 13.

[0046] During retrobulbar anesthesia, it is very easy for the needle to not enter the muscle cone sac cavity but be in the peribulbar space. At this time, the anesthetic solution flows out from the drainage tube 13 instead of the collecting tube 6, which also indicates that the position of retrobulbar anesthesia is incorrect.

[0047] As Figure 1 、 Figure 3 、 Figure 4 shown, in some embodiments, the ocular retrobulbar anesthesia training device further includes: An eyelid structure 11 is connected to the orbital bone structure 4 and covers the orbital groove 41. The eyelid structure 11 is provided with an eyelid slit, and the eyelid slit exposes the knob turntable 22; the eyelid structure 11 includes an inner silicone layer, a sponge layer, and an outer silicone layer. The inner silicone layer is provided with magnetic blocks, and the eyelid structure 11 is magnetically adsorbed on the orbital bone structure 4.

[0048] Among them, the eyelid structure 11 has a thickness of about 5 mm, and the overall structure is magnetically adsorbed on the orbital bone structure 4 and can be disassembled and replaced.

[0049] This application also provides an operation method of the above-mentioned retrobulbar anesthesia training device for the eye, which includes: Filling the first color liquid in the annular water sac 112 inside the sphere; When anesthetizing the retrobulbar muscle cone sac cavity structure 3, use a syringe to draw the second color liquid to simulate anesthetic. After inserting the syringe needle and before injection, aspirate. If the first color liquid is aspirated, it means that the needle tip of the syringe enters the eyeball model 1, and the operation is determined to be unqualified. If air is aspirated, then inject the second color liquid; After pulling out the needle, detect whether the second color liquid drains out from the retrobulbar muscle cone sac cavity structure 3. If the second color liquid does not drain out, it means that the second color liquid does not enter the retrobulbar muscle cone sac cavity structure 3, and the anesthesia operation is determined to be unqualified. If the second color liquid drains out, the anesthesia operation is determined to be qualified; After pulling out the needle, detect whether the second color liquid drains out from the peribulbar space. If the second color liquid drains out, it means that the second color liquid does not enter the retrobulbar muscle cone sac cavity structure 3, and the anesthesia operation is determined to be unqualified.

[0050] This application provides an eye axis adjustment mechanism 2 inside the eyeball model 1. The eye axis adjustment mechanism 2 includes a central axis screw 21, a knob turntable 22, and a fixing cap 23. By adjusting the distance between the knob turntable 22 and the fixing cap 23, the eye axis length of the eyeball model 1 can be adjusted, and injection training can be carried out on the retrobulbar muscle cone sac cavity structure 3 under different eye axis lengths. It can prevent injection deviation caused by different eye axis lengths during retrobulbar anesthesia injection of the eye through training, and improve the safety of retrobulbar anesthesia operation of the eye.

[0051] In the above embodiments, the descriptions of each embodiment have their own emphases. For parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0052] The above has introduced in detail an apparatus for training retrobulbar anesthesia of the eye and its operation method provided by the embodiments of this application. Specific examples are used in this article to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the technical solution and its core idea of this application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An ophthalmic retrobulbar anesthesia training device, characterized in that, Comprising: An eyeball model, including an outer wall of the eyeball and an annular water sac inside the sphere; the annular water sac inside the sphere is arranged inside the outer wall of the eyeball, the annular water sac inside the sphere is provided with an axial through hole, and the outer wall of the eyeball is provided with a front through hole and a rear through hole corresponding to the axial through hole; An eye axis adjusting mechanism, including a central axis screw, a knob turntable and a fixing cap; the central axis screw is arranged inside the axial through hole, the first end of the central axis screw passes through the front through hole and is threadedly connected to the knob turntable, the second end of the central axis screw passes through the rear through hole and is connected to the fixing cap, and both the knob turntable and the fixing cap are abutted against the outer wall of the eyeball. The eye axis length of the eyeball model is adjusted by adjusting the distance between the knob turntable and the fixing cap; A retrobulbar muscle cone sac cavity structure, which is connected to the eyeball model in a conical shape and is located on one side of the fixing cap; An orbital bone structure, provided with an orbital groove, the eyeball model, the eye axis adjusting mechanism and the retrobulbar muscle cone sac cavity structure are arranged inside the orbital groove, and the knob turntable is located at the notch position of the orbital groove.

2. The retrobulbar anesthesia training device for eyes according to claim 1, characterized in that, The eye axis adjusting mechanism further includes: A ball bearing, including a turntable outer shell and a turntable inner ring, the turntable outer shell is fixedly connected to the front through hole of the outer wall of the eyeball, the turntable inner ring is threadedly connected to the central axis screw, and the turntable inner ring is connected to the knob turntable.

3. The retrobulbar anesthesia training device for eyes according to claim 2, characterized in that, The first end of the central axis screw is provided with an external thread, the range of the external thread is 10 mm, the pitch of the external thread is 1 mm, the knob turntable is arranged in an internal thread threadedly connected to the external thread, and the turntable inner ring is provided with an eye axis length scale.

4. The retrobulbar anesthesia training device for eyes according to claim 1, wherein, Further comprising: An extraocular muscle structure, which is connected to the outside of the outer wall of the eyeball and is arranged to cover the retrobulbar muscle cone sac cavity structure. The vertex of the cone formed by the side of the extraocular muscle structure facing away from the eyeball model forms an orbital apex. The extraocular muscle structure includes a superior rectus muscle, a lateral rectus muscle, an inferior rectus muscle and a medial rectus muscle distributed around the outer wall of the eyeball. A magnetic attracting member is arranged on the outer surface of the extraocular muscle structure, and the extraocular muscle structure and the orbital groove are magnetically fixed; An orbital apex fluid collecting tray, which is arranged at the orbital apex position, and the edge of the orbital apex fluid collecting tray is connected to the extraocular muscle structure; A collecting pipe, the retrobulbar muscle cone sac cavity structure includes a muscle cone and a muscle cone sac cavity, the muscle cone sac cavity is located between the muscle cones, the first end of the collecting pipe is connected to the orbital apex fluid collecting tray and is communicated with the muscle cone sac cavity, and the second end of the collecting pipe is provided with a first switching valve.

5. The retrobulbar anesthesia training device for eyes according to claim 4, wherein, Further comprising: An intraocular perfusion pipe, the first end of the intraocular perfusion pipe passes through the retrobulbar muscle cone sac cavity structure and is communicated with the annular water sac inside the sphere, and the second end of the intraocular perfusion pipe is provided with a second switching valve.

6. The retrobulbar anesthesia training device for eyes according to claim 5, wherein, The first end of the intraocular perfusion pipe is provided with a plurality of optic nerve aqueducts, the fixing cap is provided with a plurality of first fixing holes, the optic nerve aqueducts are hermetically connected to the first fixing holes and pass through the outer wall of the eyeball to be communicated with the annular water sac inside the sphere, the orbital apex fluid collecting tray is provided with a second fixing hole, and the second end of the intraocular perfusion pipe is hermetically connected to the second fixing hole.

7. The retrobulbar anesthesia training device for eyes according to claim 1, characterized in that, Further comprising: An orbital septum structure is disposed within the orbital groove. A peribulbar space is formed between the eyeball model, the retrobulbar muscle cone sac cavity structure, and the orbital bone structure, and the orbital septum structure fills the peribulbar space. A vascular structure is disposed within the orbital septum structure, and both ends of the vascular structure extend to the outer surface of the orbital bone structure to form vascular inlets and outlets.

8. The retrobulbar anesthesia training device for eyes according to claim 7, wherein, The posterior orbital anesthesia training device further includes: A sealing plug is disposed at the bottom of the orbital bone structure, and a liquid collecting tube and an intraocular perfusion tube are fixedly sealed within the sealing plug. A drainage tube is disposed on the sealing plug, and the drainage tube communicates with the peribulbar space; the sealing plug collects the liquid in the peribulbar space and flows out from the drainage tube.

9. The retrobulbar anesthesia training device for eyes according to claim 1, wherein, It further includes: An eyelid structure is connected to the orbital bone structure and covers the orbital groove. The eyelid structure is provided with an eyelid fissure, and the knob turntable is exposed through the eyelid fissure. The eyelid structure includes an inner silicone layer, a sponge layer, and an outer silicone layer. The inner silicone layer is provided with magnetic blocks, and the eyelid structure is magnetically adsorbed on the orbital bone structure.

10. A method for operating the retrobulbar anesthesia training device for the eye according to any one of claims 1 to 9, characterized in that, It includes: A first color liquid is filled in the intraocular annular water sac. When anesthetizing the retrobulbar muscle cone sac cavity structure, a syringe is used to draw a second color liquid to simulate anesthetic. After the syringe is inserted and before injection, if the first color liquid is drawn out, it indicates that the needle tip of the syringe has entered the eyeball model, and the operation is judged to be unqualified. If air is drawn out, the second color liquid is injected. After the needle is withdrawn, it is detected whether the second color liquid flows out from the retrobulbar muscle cone sac cavity structure. If the second color liquid does not flow out, it indicates that the second color liquid has not entered the retrobulbar muscle cone sac cavity structure, and the anesthetic operation is judged to be unqualified. If the second color liquid flows out, the anesthetic operation is judged to be qualified. After the needle is withdrawn, it is detected whether the second color liquid flows out from the peribulbar space. If the second color liquid flows out, it indicates that the second color liquid has not entered the retrobulbar muscle cone sac cavity structure, and the anesthetic operation is judged to be unqualified.

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