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WO2010084595A1 - Système d'oeil simulé pour la formation à la chirurgie de la cataracte - Google Patents

Système d'oeil simulé pour la formation à la chirurgie de la cataracte Download PDF

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Publication number
WO2010084595A1
WO2010084595A1 PCT/JP2009/051008 JP2009051008W WO2010084595A1 WO 2010084595 A1 WO2010084595 A1 WO 2010084595A1 JP 2009051008 W JP2009051008 W JP 2009051008W WO 2010084595 A1 WO2010084595 A1 WO 2010084595A1
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WIPO (PCT)
Prior art keywords
simulated
lens
eye
cataract surgery
lower member
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PCT/JP2009/051008
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English (en)
Japanese (ja)
Inventor
淳介 飽浦
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Frontier Vision
Frontier Vision Co Ltd
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Frontier Vision
Frontier Vision Co Ltd
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Priority to PCT/JP2009/051008 priority Critical patent/WO2010084595A1/fr
Priority to JP2009518183A priority patent/JP4509216B1/ja
Publication of WO2010084595A1 publication Critical patent/WO2010084595A1/fr
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/28—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine
    • G09B23/30—Anatomical models
    • G09B23/34—Anatomical models with removable parts

Definitions

  • the present invention relates to a simulated eye apparatus for practicing cataract surgery that enables simulation training of cataract surgery operations.
  • ⁇ Cataract is a disease in which the lens functioning as a lens in the eye becomes turbid. As a result of this opacity, sufficient light does not enter the eye, resulting in visual impairment.
  • the crystalline lens of the human eye is a transparent convex lens having a diameter of about 9 mm and a thickness of 4 to 5 mm, and is located behind the iris.
  • the lens has a structure in which a tissue called the cortex of its contents is wrapped in an anterior lens capsule and a posterior capsule having a thickness of about 10 ⁇ m.
  • the cortex is a soft tissue, but a hard tissue called a nucleus is formed in the central part of the lens mainly due to aging. This is the cause of cataracts.
  • the cataract surgery is an operation for recovering visual acuity by taking out such a cloudy lens so that sufficient light can be taken into the eye.
  • cataract surgery Various techniques for such cataract surgery have been developed in the past, such as intracapsular excision (total excision) and extracapsular excision.
  • intracapsular excision total excision
  • extracapsular excision because the incision is small, ease of postoperative recovery and low astigmatism incidence, etc., the mainstream of current cataract surgery is ultrasonic emulsification, which was created in the cornea or sclera Operation is performed by inserting a surgical instrument through an incision of about 1 mm to 3 mm.
  • the transparent anterior lens capsule with a thickness of about 10 ⁇ m surrounding the lens is torn with a needle or tweezers to create a continuous circular incision with no radial tear (this is a continuous circular anterior capsule incision, CCC: Continuous Circular Capsular Hexis), the contents of the turbid lens are removed by suction.
  • the lens nucleus which is a hard portion formed in the center of the lens, is finely divided by various techniques, and then each core fragment is crushed with an ultrasonic emulsification suction device and removed by suction.
  • the turbid cortex between the anterior lens capsule and the posterior capsule is aspirated into a bag made by the transparent lens anterior capsule and posterior capsule. Insert an intraocular lens.
  • Such surgery is performed on more than 1 million patients per year in Japan and more than 3 million patients per year in the United States.
  • CCC is performed by a chitotome or an anterior capsular insulator.
  • a tear method and flap inversion method are known as CCC performed using a chitotome.
  • CCC by the flap inversion method is usually performed by first forming a 2 mm-long cut from the center of the anterior capsule at the tip of the chitotome and hooking the edge with the tip of the chitotome to flap the flap. Turn it over.
  • the CCC by the tearing method is started by first making a cut of about 2 mm in length from the center of the anterior capsule at the tip of the cystome, but then the tip of the cystome is brought into contact with the front side without turning the anterior capsule over. However, it is pulled while carefully adjusting the direction and speed, thereby growing the incision line into a substantially circular shape. In any case, when growing the incision line, skill and great care are required so that the incision line does not flow radially outward of the lens capsule.
  • the porcine eye lens capsule is too soft to be suitable for practicing continuous circular anterior capsulotomy, and that the porcine eye lens has only a soft cortex without a nucleus. Because it is configured, it is impossible to practice the lens nucleus division technique. Also, the sclera of pig eyes is hard and is not suitable for practicing the creation of a cataract surgical incision, especially the scleral tunnel incision.
  • simulated eyes developed for use by students and young doctors for practicing cataract surgery include “Marty the Surgical Simulator” disclosed in Patent Documents 1 to 4 (hereinafter referred to as “Marty” simulated eyes).
  • This “Marty” simulated eye is brought into the operating room to simulate and train cataract surgery using an ultrasonic cataract surgery device.
  • This “Marty” simulated eye has an eyeball (orb) in which a chamber is formed and an opening that communicates with the outside is provided. The opening has a shelf for sequentially receiving a simulated posterior capsule convex toward the chamber, a simulated crystalline lens encapsulated with a thick film whose front and rear are simulated anterior capsules, and a corneal cap.
  • the simulated lens capsule that encloses the "Marty" simulated lens is made of a thick film made of vinyl or vinylidene chloride film and is an indispensable and important step for mainstream ultrasonic cataract surgery as described above. It was almost impossible to make a continuous circular anterior capsulotomy because the film material was too hard and too thick. Furthermore, under this film is a hard simulated lens nucleus, there is no soft part hitting the lens cortex, and the simulated anterior capsule of this film is fixed with the surface wrinkled and tensioned with moderate tension The fact that it was not fixed in the state was also the reason why continuous circular anterior capsulotomy cannot be performed.
  • the simulated lens nucleus that should be divided and crushed by ultrasonic waves is composed of gelatin, alginic acid, guar gum, glycol, or gelactasol, which is difficult to break cleanly and easily collapses during operation. It was very different from cataract surgery. Moreover, the “Marty” simulated eye was used only in some facilities because the product itself was very expensive, and the disposable cornea and the simulated lens were also expensive. No products are supplied. The biggest factor that this “Marty” simulated eye was not used for cataract surgery training was that it was difficult to say that surgery could be simulated with a sense resembling that of the human eye.
  • a prosthetic capsule trainer” “HS-2868” (available from HANDAYA CO, LTD. TOKYO) is a cataract surgery practice instrument other than the “Marty” simulated eye. This is for practicing the aforementioned continuous circular anterior capsulotomy (CCC), which is said to be the most difficult step in cataract surgery.
  • This “deep-work capsule trainer” includes a flat lower plate and an upper plate, both of which are hinged at one end. An opening is formed in the upper plate, while a cylindrical portion having an outer diameter smaller than the inner diameter of the opening of the upper plate is formed on the lower plate. A relatively hard soft plastic columnar body is disposed in the cylindrical portion of the lower plate.
  • a food packaging film such as a brand name “Saran Wrap” (registered trademark) containing polyvinylidene chloride as a main component is used as a simulated anterior lens capsule film and is put on the cylindrical portion of the lower plate, It is described that the upper plate and the lower plate are used in a closed state.
  • the instrument In the material made of soft plastic used as a simulated cortex, the instrument will not be buried in the lens cortex like the human eye, and the instrument will be caught there, 4).
  • the structure that only closes the upper and lower plates cannot apply tension to the simulated anterior capsule film uniformly over 360 °, There are four.
  • the continuous circular anterior capsule incision and the lens nucleus division technique are particularly difficult steps that are difficult to master, but the creation of an incision is also an important step.
  • the mainstream of current cataract surgical incision is a self-closing wound made in the sclera and cornea in a tunnel shape, which cuts the cornea and sclera half layer after 800 ⁇ m in thickness, so that delicate technique is used. This is a necessary step.
  • As a training tool for practicing corneal incision in ophthalmic surgery there is an “ophthalmic surgical incision training tool” disclosed in Patent Document 5.
  • the anterior segment of the human eye such as the sclera and cornea
  • is replicated locally and is made of a material containing any of thermoplastic elastomer, silicone rubber, and hydrogel.
  • This is a training tool for practicing human corneal incision.
  • This is a training tool that only practice corneal incision, it can not practice scleral tunnel incision and other cataract surgery techniques, it is expensive to introduce this training tool only for corneal incision practice
  • ⁇ Cataract surgery is a combination of many steps. Among the many steps, the most important steps are described in 1. 1. continuous circular anterior capsulotomy, 2. lens nucleus division; Incision creation. It is required for an eye model for cataract surgery training that these important surgical steps can be practiced with a sense similar to that of human eye surgery. For this reason, several examples have been proposed for the artificial eye that has been disclosed in the above-mentioned patent documents, and the artificial simulated eye for the above-mentioned patent literature has been proposed so far to make the above-mentioned isolated pig eye close to the human eye.
  • simulated anterior capsule film, simulated lens nucleus, simulated cornea / sclera, etc. are used repeatedly and are disposable after practicing surgical techniques, so these can be recycled and reused or are inexpensive There was no such thing that had to be able to supply.
  • This invention solves these problems of conventional pig eyes and simulated eyes for practicing cataract surgery, and is an important step in cataract surgery techniques, such as continuous circular anterior capsulotomy and lens nucleus division technique, It is an object of the present invention to provide a simulated eye device for practicing cataract surgery, which can practice sclera / corneal tunnel incision individually or continuously with a sense close to that of the human eye.
  • a simulated eye apparatus for practicing cataract surgery is provided with a lower member having a recess opened upward with a circular opening, and removable to the lower member.
  • An upper member to be connected which has at least one annular portion in which at least one instrument insertion hole is formed, and a simulated crystalline lens which is accommodated in the recess and has a softness similar to that of the lens cortex of the human eye
  • a simulated anterior lens capsule disposed between the cortex, the lower member and the upper member, and a simulated lens capsule made of a film having properties similar to those of the human eye lens capsule;
  • Tension applying means for applying a uniform tension over the simulated anterior lens capsule film to the simulated anterior lens capsule in a state of 360 ° and similar to the anterior lens capsule of the human eye in a state in which the simulated anterior lens capsule film is in contact with the simulated lens cortex It is characterized in.
  • the simulated eye device for practicing cataract surgery when the lower member and the upper member are connected, the simulated eye device is composed of a film having properties similar to those of the anterior lens capsule of the human eye.
  • the anterior lens capsule of the human eye that is uniform over 360 ° in a state of being in contact with the simulated lens cortex that is accommodated in the depression by the tension applying means and has a softness similar to the lens cortex of the human eye. The approximate tension is given.
  • the simulated anterior lens capsule film is made of a material having properties (thickness, tear strength, and elasticity) similar to those of the human eye lens capsule. 2.
  • the simulated lens cortex on which the simulated anterior capsule film is placed is made of a soft material that fills the tip of the instrument like the human lens cortex; and The requirement that the simulated anterior capsule film is appropriately tensioned uniformly by 360 ° is satisfied, as the anterior lens capsule of the human eye lens is pulled by the chin band uniformly by 360 °. Therefore, by simulating a cystome through at least one instrument insertion hole, it is possible to perform simulation training for continuous circular anterior capsulotomy with a sense close to that of the human eye.
  • the simulated anterior lens capsule film has a thickness of 4 to 20 ⁇ m whose main component is one of the group consisting of polyethylene terephthalate (PET), orientated polypropylene (OPP), and cellophane.
  • PET polyethylene terephthalate
  • OPP orientated polypropylene
  • cellophane cellophane
  • these films have tear strength and elasticity similar to those of the human eye, it is possible to perform simulation training for continuous circular anterior capsulotomy with a sense closer to that of the human eye. .
  • the artificial film that can perform a continuous circular anterior capsulotomy with a sense closest to the human eye is a PET film having a thickness of 4 ⁇ m or 9 ⁇ m.
  • the 9 ⁇ m-thick OPP film and the 20 ⁇ m-thick cellophane film have a slightly harder sensation than the human eye, but can perform continuous circular anterior capsulotomy with a sensation close to the human eye next to a 4 ⁇ m or 9 ⁇ m thick PET film.
  • the thinnest OPP film and cellophane film on the market are 9 ⁇ m and 20 ⁇ m in thickness, respectively. If a thinner OPP film or a cellophane film is produced, it may be possible to produce a film superior to a PET film having a thickness of 4 ⁇ m or 9 ⁇ m.
  • the tension applying means is fitted into the depressed portion with the depressed portion formed at the lower end of the upper member and the simulated anterior lens capsule film interposed therebetween, You may provide the cyclic
  • the simulated anterior lens capsule film is colored and at least one surface is formed into a rough surface.
  • the rough surface may be formed by attaching a colorant.
  • the anterior lens capsule is colored by red to yellow reflected light (transillumination) from the fundus, so the position of the incision line And the shape of the anterior capsule flap.
  • the anterior lens capsule is colored by red to yellow reflected light (transillumination) from the fundus, so the position of the incision line And the shape of the anterior capsule flap.
  • CCC using a simulated eye
  • there is no reflection from the fundus so it is difficult to confirm the position of the incision line and the shape of the anterior capsule flap.
  • the position of the line and the shape of the anterior capsule flap can be easily confirmed.
  • the present inventor has a smooth and slippery property when the PET film, the OPP film, and the cellophane film used as a simulated anterior lens capsule are not colored. It has been found that the surface changes to a rough surface with extremely fine irregularities, that is, a rough surface, like the anterior capsule. Therefore, when the rough surface is formed by attaching a colorant dye by printing or dyeing, the above-described coloring and rough surface can be efficiently formed simultaneously.
  • the simulated lens cortex is a plastic material having a predetermined softness (hardness), and is made of wheat clay, oil clay, resin clay, agar, jelly, hard methylcellulose, and a superabsorbent resin. May consist of one of these.
  • the predetermined softness (hardness) is preferably 5 to 20 points as measured by an Asker rubber hardness meter C type (manufactured by Kobunshi Keiki Co., Ltd.) in accordance with Japanese Industrial Standards JIS K 7312 and JIS S 6050.
  • a soft simulated lens cortex approximate to the lens cortex of the human eye can be easily obtained.
  • a simulated eye apparatus for practicing cataract surgery is provided with a lower member having a recess opened with a circular opening on the upper side, and removable to the lower member.
  • An upper member connected to the upper member having at least an annular portion in which at least one instrument insertion hole is formed; and at least a simulated lens nucleus accommodated in the recess;
  • resin clay (polymer clay) is heated under a predetermined temperature environment at different times to classify nuclear hardness of human eye emery.
  • At least one simulated lens nucleus formed at 2 degrees, 3 degrees, 4 degrees or 5 degrees is housed in the recess.
  • a simulated ultrasonic oscillator, simulated nucleus split hook or pre-chopper into this simulated lens nucleus through at least one instrument insertion hole, it feels very similar to the nuclear split operation of the human eye.
  • Split operation can be performed, and it is possible to practice nuclear splitting techniques repeatedly on a desk at home without using an ultrasonic cataract surgery device in the operating room.
  • the plastic lens-made simulated lens core is economical because it can be reused after being divided and kneaded in its own hand to reshape it.
  • the original purpose of this simulated eye for practicing cataract surgery is to be able to practice repeatedly on a desk at home, but the simulated lens nucleus made of plastic clay is emulsified and sucked using an ultrasonic cataract surgical device. Therefore, it is also possible to bring a simulated eye apparatus for practicing cataract surgery equipped with this into the operating room and practice the division and emulsification of the simulated lens nucleus using an ultrasonic surgical apparatus under a microscope.
  • a simulated eye apparatus for practicing cataract surgery is provided with a lower member having an indentation opened upward with a circular opening, and removable to the lower member.
  • An upper member to be connected which has at least one annular portion in which at least one instrument insertion hole is formed, a cup member accommodated in the recess, and a simulated crystalline lens held in the cup member.
  • Each of the simulated lens nuclei is formed with a pattern corresponding to an operation procedure of the lens nucleus splitting technique, and has at least one of the previously split structures.
  • a simulated lens having a structure in which a pattern corresponding to the operation procedure of the lens nucleus dividing technique is formed on each of them and the structure is divided in advance.
  • One of the nuclei is held in the cup member and received in the recess. Then, by inserting a simulated ultrasonic oscillator tool or the like into the simulated lens nucleus from at least one instrument insertion hole and moving the instrument according to the pattern, the correct instrument operation can be naturally acquired naturally. it can.
  • the Stop & Chop method and the Phako-chop method which are three typical techniques among the existing lens nucleus division techniques, respectively. Grooves, side holes, and tunnels are appropriately combined.
  • a simulated eye apparatus for practicing cataract surgery is attached to at least an annular portion of the upper member in addition to any of the first to third aspects of the present invention.
  • the present invention further includes a simulated sclera or a simulated cornea made of a soft, planar material having a predetermined thickness with elasticity and resistance similar to those of the human sclera and cornea.
  • the simulated eye apparatus for practicing cataract surgery is made of a soft and predetermined planar material having elasticity and resistance similar to the sclera or cornea of the human eye.
  • a simulated sclera or a simulated cornea is attached to at least the annular portion of the upper member.
  • incision and suturing is repeated and improved many times. Since these simulated sclera and simulated cornea are disposable after the incision practice, they must be supplied in large quantities at low cost.
  • the simulated sclera and simulated cornea of the present invention do not use a simulated sclera or simulated cornea that is created for that purpose, one by one, like the practice instrument for incision and suture that has been in the past. A flat material can be cut into an appropriate size and used. Therefore, since the simulated sclera and cornea for one incision practice are supplied at low cost, the incision and suture practice can be repeated as many times as necessary without worrying about the cost.
  • the simulated sclera or simulated cornea is soft and has a planar material having a predetermined thickness, such as polyethylene foam, acrylic foam, polyurethane foam, foamed butyl rubber, ethyl vinyl acetate resin, soft vinyl chloride. Any one of the group consisting of resin, silicon resin, urethane resin, fluororesin, styrene-butadiene-styrene resin, elastomer, and synthetic rubber may be used.
  • a simulated eye apparatus for practicing cataract surgery in addition to any one of the first to fourth aspects of the present invention, the direction of the magnetic lines of force substantially coincides with the direction of the line of sight
  • the magnet further includes a magnet incorporated in the lower member, and a magnetic body having at least a surface abutting against the magnet formed into a convex curved surface and fixed to a pedestal.
  • the magnet incorporated in the lower member and the magnetic body fixed to the pedestal are adsorbed by magnetic force.
  • the magnet since the magnet is incorporated in the lower member so that the direction of the magnetic field line thereof substantially coincides with the direction of the line of sight, the simulated eye composed of the lower member and the upper member connected thereto The direction of is always opposite to the center of curvature of the curved surface of the magnetic body.
  • the simulated eye can be moved so as to slide on the curved surface of the magnetic body with the center of curvature of the curved surface of the magnetic body as the center of rotation.
  • the simulated eye can point in any direction within the turning range regulated by the amount of exposure from the pedestal above the magnetic body and the radius of curvature, and is fixed in that arbitrary direction. Therefore, by using the simulated eye device for practicing cataract surgery according to this embodiment, you will learn how to move the human eye by moving the instrument, and how to move the instrument that does not rotate the eyeball in a bad direction. Useful for.
  • the magnet is preferably incorporated in the lower member so that the point contact position between the magnet and the curved surface of the magnetic body is at the center of the human eye.
  • a restoring force applying means that is provided between the lower member and the pedestal and applies a restoring force to the lower member.
  • the simulated eye when the simulated eye is turned by applying an external force, the same resistance as when the human eye is turned during surgery is obtained, and when the external force is released, the eyeball is naturally Restore the original position.
  • the sense of resistance and behavior of the simulated eye when turning are very well reproduced when operating on the human eye, and a realistic surgical simulation can be experienced, which is very effective in practicing surgical techniques.
  • a simulated eye apparatus kit for practicing cataract surgery is formed with a recess capable of accommodating a simulated lens cortex, a simulated lens core, and a cup member holding the simulated lens core.
  • a lower member having a circular opening at the top of the recess and an annular protrusion formed at the periphery of the opening, and is detachably connected to the lower member.
  • An upper member having at least an annular portion in which at least one instrument insertion hole is formed; a recessed portion formed at a lower end into which the annular protrusion is press-fitted; the lower member;
  • a simulated anterior lens capsule disposed between the upper member and the lens that has a property similar to that of a human eye lens capsule, and is mainly composed of one of the group consisting of PET, OPP, and cellophane Imitation made of film
  • Predetermined softness composed of an anterior lens capsule film and one of the group consisting of wheat clay, oil clay, resin clay, agar, jelly, hard methylcellulose, and superabsorbent resin as the simulated lens cortex (Hardness) plastic material and the simulated lens nucleus, heated at a predetermined temperature environment for different times, 2 degrees, 3 degrees, 4 degrees or 5 degrees of Emery's nuclear hardness classification of human eye
  • a resin clay that can be formed into a plurality of types and a plastic member having a structure in which a pattern is formed in advance and
  • the simulated sclera or the simulated cornea it is affixed to at least the annular portion of the upper member, and is soft and predetermined having elasticity and resistance similar to the sclera or cornea of the human eye. It is preferable to further comprise a planar material having a thickness of.
  • the magnet incorporated in the lower member and at least the surface in contact with the magnet are formed in a convex curved surface so that the direction of the lines of magnetic force substantially coincides with the direction of the line of sight.
  • the simulated anterior lens capsule film, simulated lens nucleus, simulated cornea / sclera, etc. of the present invention are disposable or recyclable parts that can be reused as they are or are commercially available products. It can also be used after processing raw materials. Therefore, it can be provided at a low price that can be easily purchased by a trainee or a student.
  • FIG. 1 is a perspective view showing the overall appearance of an embodiment of a simulated eye apparatus according to the present invention.
  • FIG. 2 is an exploded perspective view showing an embodiment of a simulated eye device according to the present invention.
  • FIG. 3 is a cross-sectional view showing an embodiment of a simulated eye device according to the present invention, and is an explanatory view of practice of continuous circular anterior capsulotomy.
  • FIG. 4 is a cross-sectional view showing an embodiment of a simulated eye device according to the present invention, and is an explanatory view of practice of the lens nucleus division technique.
  • FIG. 1 is a perspective view showing the overall appearance of an embodiment of a simulated eye apparatus according to the present invention.
  • FIG. 2 is an exploded perspective view showing an embodiment of a simulated eye device according to the present invention.
  • FIG. 3 is a cross-sectional view showing an embodiment of a simulated eye device according to the present invention, and is an explanatory view of practice of continuous circular anterior capsulotomy
  • FIG. 5A is a cross-sectional view showing an embodiment of a simulated eye device according to the present invention, and is also an explanatory diagram of practice of creating a sclera / corneal incision.
  • FIG. 5B is a cross-sectional view showing an embodiment of a simulated eye device according to the present invention, and is an explanatory view of sclera / corneal incision creation and suture practice.
  • FIG. 5C is a partially enlarged view of FIG. 5A, and is an explanatory view of practice of creating a sclera / corneal incision.
  • FIG. 5A is a cross-sectional view showing an embodiment of a simulated eye device according to the present invention, and is also an explanatory diagram of practice of creating a sclera / corneal incision.
  • FIG. 5B is a cross-sectional view showing an embodiment of a simulated eye device according to the present invention, and is an explanatory view of sclera /
  • FIG. 6 is a diagram for illustrating simulated lens nuclei in which a pattern corresponding to the operation procedure of the lens nucleus division technique in one embodiment of the simulated eye device according to the present invention is illustrated, and each of columns A to C is illustrated. Corresponding to the Divide & Conquer method, Stop & Chop method, and Phaco-chop method, and 1 to 4 lines, perspective view, plan view, and side view along the 3-3 dividing line of each simulated lens nucleus , And side views along the 4-4 dividing line are shown in sequence.
  • FIG. 7A is an exploded perspective view showing another embodiment of the simulated eye device according to the present invention.
  • FIG. 7A is an exploded perspective view showing another embodiment of the simulated eye device according to the present invention.
  • FIG. 7B is a cross-sectional view showing a normal state of another embodiment of the simulated eye device according to the present invention.
  • FIG. 7C is a cross-sectional view showing a state after turning of another embodiment of the simulated eye apparatus according to the present invention.
  • FIG. 8A is an exploded perspective view showing still another embodiment of the simulated eye device according to the present invention.
  • FIG. 8B is a cross-sectional view showing a normal state of still another embodiment of the simulated eye device according to the present invention.
  • FIG. 8C is a cross-sectional view showing a state after turning of still another embodiment of the simulated eye device according to the present invention.
  • FIG. 9A is a cross-sectional view showing a normal state of still another embodiment of the simulated eye device according to the present invention.
  • FIG. 9B is a cross-sectional view showing a state after turning of still another embodiment of the simulated eye apparatus according to the present invention.
  • FIG. 1 is a perspective view showing an entire simulated eye 10 according to an embodiment of the present invention
  • FIG. 2 is an exploded perspective view of the simulated eye 10.
  • the simulated eye 10 includes an upper member 20 that partially corresponds to the cornea / iris portion of the human eye and a lower member 30 that partially corresponds to the sclera / posterior lens capsule. Yes.
  • the upper member 20 includes a base portion 21 having a convex curved surface and a flat lower end surface at a peripheral portion, an annular portion 22 corresponding to the lower portion of the transparent dome-shaped cornea connected to the base portion 21, and the human eye And a donut-shaped simulated iris portion 23 corresponding to the iris, and a circular recessed portion 24 formed below the simulated iris portion 23.
  • the annular portion 22 is subjected to a relatively large hole 25 into which an ultrasonic oscillator tool and other instruments are inserted, and anterior lens capsule incision and nucleus division operation are performed on both sides of the hole 25.
  • Small first and second holes 26 and 27 are provided for receiving the instrument.
  • an opening 28 surrounded by the annular portion 22 is provided, and ears 29 are formed on both sides of the base portion 21.
  • the lower member 30 corresponds to a substantially hemispherical shell-shaped main body portion 31 having a flat upper end surface on the upper side, a simulated lens cortex 40, a simulated lens core 50, and a simulated lens core described later.
  • a bottom wall 33 that forms a recess 32 that can accommodate the cup member 60 that holds the cup.
  • An upper portion of the recess 32 is opened by a circular opening 34, and an annular protrusion 35 protruding from a flat upper end surface is formed on the periphery of the opening 34.
  • the outer diameter of the annular protrusion 35 and the inner diameter of the recessed portion 24 of the upper member 20 are designed to function as tension applying means for uniformly applying tension to a simulated anterior lens capsule film 70 to be described later over 360 °. In the state where the sac film 70 is interposed, both are set to have an interference fit relationship.
  • the annular protrusion 35 does not need to be completely continuous, and may be divided in the circumferential direction as long as it can apply a uniform tension and can be fitted into the recessed portion 24 of the upper member 20.
  • the lower member 30 is integrally formed with a support portion 36 that hangs down from the bottom wall portion 33 toward the center of the sphere, and a magnet is provided so that the magnetic pole surface is exposed at the lower end portion of the support portion 36. 80 is embedded (see FIG. 3).
  • the material of the upper member 20 and the lower member 30 is a cured plastic in consideration of cost and durability.
  • the material is not particularly limited, and silicon resin, fluororesin, synthetic rubber, etc. A relatively soft material may be used.
  • the part of the bottom wall part 33 which forms the hollow 32 of the lower side member 30 may be a thin film sheet made of polyester or polypropylene.
  • FIG. 3 is a cross-sectional view of the simulated eye 10 in a state in which the upper member 20 and the lower member 30 are detachably connected, and the cystome 100 is inserted through the first or second hole 26 or 27 and continuously. It shows when a circular anterior capsulotomy (CCC) is about to take place.
  • CCC circular anterior capsulotomy
  • the upper lens 20 is pressed toward the lower member 30 so as to cover the simulated anterior lens capsule film 70 and so that the annular protrusion 35 of the lower member 30 fits into the circular recess 24 of the upper member 20. is there.
  • the simulated anterior lens capsule film 70 that is in contact with the annular protrusion 35 is uniformly tensioned over 360 ° by the inner surface of the circular recess 24, and the upper member 20 and the lower member 30.
  • the simulated lens cortex 40 is made of a soft material such as wheat clay, as will be described later, the simulated lens cortex 40 existing under the simulated anterior lens capsule film 70 is also the simulated anterior lens capsule. It plays a role in giving moderate tension to the film 70.
  • the simulated anterior lens capsule film 70 used in the simulated eye 10 of the present embodiment will be described.
  • the simulated anterior lens capsule film 70 has a thickness of 4 to 20 ⁇ m whose main component is one of polyethylene terephthalate (PET), orientated polypropylene (OPP), and cellophane, which have tear strength and elasticity similar to those of the human eye. It is a film.
  • PET polyethylene terephthalate
  • OPP orientated polypropylene
  • cellophane which have tear strength and elasticity similar to those of the human eye. It is a film.
  • the inventor has investigated all films that are generally produced or marketed. Among them, an artificial film that can perform a continuous circular anterior capsulotomy with a sense closest to the human eye is a PET film having a thickness of 4 ⁇ m or 9 ⁇ m. I found out.
  • the 9 ⁇ m thick OPP film and the 20 ⁇ m thick cellophane film have a slightly harder sensation than the human eye. I also confirmed that I can do it.
  • the thinnest OPP film and cellophane film on the market are 9 ⁇ m and 20 ⁇ m in thickness, respectively. If a thinner OPP film or a cellophane film is produced, it may be possible to produce a film superior to a PET film having a thickness of 4 ⁇ m or 9 ⁇ m.
  • the simulated anterior lens capsule film 70 is colored by attaching a coloring agent dye by printing or dyeing, and the colored surface is roughened.
  • a coloring agent dye As the coloring method, it has been confirmed that the following method may be used.
  • (1) HOYA PMMA Intraocular Lens Yellow colorant is dissolved in methyl alcohol (or ethyl alcohol).
  • the PET film or OPP film is submerged and left overnight, then removed and washed with water. To do.
  • it is an oil-based dye soluble in methanol, it can be colored by the same method.
  • a PET film is immersed in hot dye P-100 red for polyester (Katsura Fine Goods Co., Ltd.) or polyester COLOR red or yellow (Seiwa Co., Ltd.) and heated at 90 ° C. for 30 minutes.
  • the OPP film is not dyed.
  • B In the case of printing (1) It is applied to one side of a PET film or an OPP film with an oily or aqueous felt pen (for example, Himackey Care Red or Himackey Green (manufactured by ZEBRA)).
  • fax ink ribbon for example, Speaks genuine ink film cartridge SP-FA430 (manufactured by NEC Access Technica), personal fax refill ribbon PC-400RF (manufactured by Brother Industries, Ltd.), facsimile ink Ribbon SHARP UX-NR8G (manufactured by Sharp), ink ribbon SANYO FXP-A41R40 (manufactured by Sanyo), and ink film KX-FAN190 for personal fax (manufactured by Panasonic) are used as they are.
  • the simulated lens cortex 40 used in the simulated eye 10 of the present embodiment is preferably measured by an Asker rubber hardness meter C type (manufactured by Kobunshi Keiki Co., Ltd.) in accordance with Japanese Industrial Standards JIS K 7312 and JIS S 6050.
  • a soft (hard) wheat clay with a value of 5 to 20 points may be any soft and soft material that fills the tip of the instrument (Chistome 100), such as the lens cortex of the human eye, such as oil clay, other clays, agar, jelly, hard methylcellulose, and a superabsorbent resin.
  • any material that satisfies the predetermined 5 to 20 point softness (hardness) may be used.
  • An example of a method for measuring the softness (hardness) when wheat clay is used as the simulated lens cortex 40 is as follows. That is, a sample of wheat clay is filled in a 32 ⁇ 32 ⁇ 10 mm styrene cup, and the surface is pressed against a plastic plate to make it flat. The sample is placed in a bag to prevent drying, and left in an environment of a temperature of 20 ° and a relative humidity of 60% for 24 hours. Thereafter, an Asker rubber hardness meter C-type pusher needle (indenter) is pressed against the sample surface in a room at a temperature of 20 ° and a relative humidity of 60%, and the maximum value is taken as the measurement value. And it measures in three places of a different position of a sample, and makes the average value the last measured value.
  • the Asker rubber hardness meter C type used here is based on JIS K 7312 and JIS S 6050 and has the following specifications. Measurement scale: 0 to 100 points, Minimum scale: 1 point, Needle shape: Height 2.54 mm, hemisphere with a diameter of 5.08 mm, Spring load: 539 mN at 0 point, 8379 mN at 100 point, Center hole diameter on the pressing surface: 5.5 mm, pressing surface dimension: 44 ⁇ 18 (rectangular), outer dimensions: width 57 mm ⁇ depth 30 mm ⁇ height 76 mm, weight: 200 g.
  • simulated lens core 50 another material of the simulated lens core 50 is plastic. However, it is not limited to this as long as it has an appropriate strength.
  • plastic cores There are four types of plastic cores depending on the structure.
  • One is an undivided simulated lens nucleus 50D used for the purpose of placing the simulated lens cortex 40 thereon when performing a continuous circular anterior capsulotomy, similar to the simulated lens nuclei 50S and 50H described above. It has the shape of The remaining three are ideal positions corresponding to each technique in advance in order to practice the three typical division techniques, Divide & Conquer method, Stop & Chop method, and Phaco-Chop method.
  • the simulated lens cores 50A, 50B, and 50C are of the type in which grooves and tunnel patterns are formed and divided into four.
  • FIG. 6 shows the positions and shapes of grooves, tunnels, and side holes formed in the simulated lens nuclei 50A, 50B, and 50C for the respective division techniques.
  • column A is the Divide & Conquer method
  • column B is the stop & chop method
  • column C is a simulated lens nucleus for practicing the phaco-chop method.
  • the first row is a perspective view and the second row is a plane.
  • the third row shows a side view along the 3-3 dividing line
  • the fourth row shows a side view along the 4-4 dividing line.
  • a cross-shaped groove Gc intersecting at the center of the nucleus is formed, and the nucleus is vertically divided into four by a line passing through the center of each groove Gc.
  • the simulated lens nucleus 50B for practice of the Stop & Chop method one groove Gs that passes through the center of the nucleus and two that obliquely downward from the center of the groove Gs in a direction orthogonal to the groove Gs.
  • the side hole Sp is made, and the nucleus is vertically divided into four along a line passing through the center of the groove Gs and the side hole Sp.
  • one tunnel T heading obliquely downward from a position slightly closer to the periphery of the upper surface of the nucleus, and in the direction perpendicular to the tunnel T, Two side holes Sp are formed obliquely downward from the center, and the nucleus is divided into four by a line passing through the center of the tunnel T and a line perpendicular thereto.
  • simulated lens nuclei 50A, 50B, and 50C are accommodated in a cup member 60 having a substantially concave spherical surface corresponding to the lens outer nucleus of the human eye.
  • the plastic simulated lens nuclei 50A, 50B, and 50C are made of a relatively hard material and cannot actually crush or emulsify the nucleus using an ultrasonic surgical device. You can practice nuclear division, rotation, and other nuclear operations. And after practice of division
  • FIG. 5A a simulated sclera / cornea 90 made of a planar material is pasted from the base portion 21 to the annular portion 22 of the upper member 20.
  • the simulated sclera / cornea 90 is not limited as long as it is a soft and flat material having a predetermined thickness with elasticity and resistance similar to those of the human sclera and cornea.
  • Polyethylene foam acrylic foam, polyurethane foam, foamed butyl rubber, ethyl vinyl acetate resin, soft vinyl chloride resin, silicon resin, urethane resin, fluororesin, styrene-butadiene-styrene resin, elastomer, synthetic rubber It may be a thing.
  • a sheet-like or tape-like planar material is cut into an appropriate size and pasted on a place where the incision practice of the wall surface of the simulated eye 10 is desired using a thin double-sided tape.
  • incision creation and suture practice may be performed, and after practice, they may be peeled off and discarded.
  • Another method is to use a double-sided tape made of a soft material having a thickness similar to the thickness of the human sclera or cornea. It may be affixed to a wall, used for practicing incision and suturing, and disposable after use.
  • the thin release paper corresponds to the relatively dense connective tissue of the upper sclera of the human eye
  • the polyethylene foam of the base material corresponds to the relatively rough connective tissue of the sclera below the upper sclera. Therefore, it is possible to practice the creation of a scleral incision with a feeling that resembles the sense of making an incision in the sclera of a human eye.
  • the simulated sclera / cornea 90 extends from the base portion 21 to the annular portion 22 of the upper member 20, and in particular, is used by being attached so as to close a relatively large hole 25 for inserting a simulated surgical instrument.
  • the material is a commercially available double-sided tape with a thickness of 1.0 mm using acrylic foam as the base material (trade name: Scotch (registered trademark) super-strength double-sided tape for vinyl chloride, in terms of cost, simplicity, and durability. Or, for transparent materials, product number CAT.No.
  • PV-2 Sumitomo 3M Co., Ltd.
  • a commercially available double-sided tape with a thickness of 0.75 mm using foamed butyl rubber as a base material (trade name: foamed butyl rubber sheet) It was confirmed that the strong double-sided tape, product number No. 541, Nitoms Corporation) was excellent. In this case, peel off the release paper on one side and stick it in place, remove the release paper on the other side, and then apply a thin (4 ⁇ m or 9 ⁇ m) PET film or OPP film on the surface of the tape. Paste and use.
  • the method of creating a sclera or corneal incision wound for a cataract surgery and practice of suture according to the present invention can also be applied to a method of creating a scleral valve and practice of suture for a glaucoma surgery.
  • FIG. 7A is an exploded perspective view of the second embodiment to which the eyeball movable device 200 is added.
  • the eyeball movable device 200 includes a magnet 80 incorporated in the simulated eye 10, an iron ball 210 as a magnetic body, and a pedestal 220. It is shown that it is configured by.
  • the magnet 80 is fixed to the lower member 30 of the simulated eye 10 as described above, and the upper part of the iron ball 210 is exposed and the lower part is embedded and fixed in the pedestal 220.
  • the simulated eye 10 as shown in FIG. 7A is preferably hemispherical only for the front half of the eyeball. It may be a simple sphere.
  • the size and shape of the magnet 80 and the pedestal 220 are not particularly limited. Even if the magnetic body is not a perfect sphere, it is sufficient that the surface in contact with the magnet 80 has a smooth convex curved surface. However, a spherical body is preferable from the viewpoint of ease of manufacture.
  • the turning range of the simulated eye 10 is affected by the shape of the pedestal 220 and the simulated eye 10 and the way the magnet 80 is attached, but the largest influence is the size of the iron ball 210 and the exposure from the pedestal 220.
  • the movable range of the simulated eye 10 increases as the radius of the iron ball increases and the ratio of the portion exposed from the pedestal increases.
  • the size of the iron ball and the ratio of the exposed part are naturally determined.
  • FIG. 7B and 7C are cross-sectional views showing a state where the magnet 80 fixed to the simulated eye 10 and the iron ball 210 fixed to the pedestal 220 are adsorbed by magnetic force.
  • the lower surface of the hemispherical shell-shaped main body 31 of the lower member 30 is closed by the bottom wall 37, and the magnet 80 is formed on the bottom wall 37 of the hemispherical simulated eye 10. It is fixed in the center. And this magnet 80 is installed in the bottom wall 37 so that the direction Z of a magnetic force line may correspond with the direction of a line of sight, in other words, it may face the direction of the virtual cornea vertex 10p.
  • the simulated eye 10 Since the direction Z of the magnetic field lines is always directed toward the center of the spherical iron ball 210, the simulated eye 10 turns around the center of the iron ball 210 while moving so as to slide on the surface of the iron ball 210 when an external force is applied. It will be. When the external force is removed, the simulated eye 10 is maintained at that position, so that the direction of the simulated eye 10 can be fixed in a predetermined direction. Further, if the pedestal 220 is fixed, the simulated eye 10 can be detached from the pedestal 220 by pulling the simulated eye in the direction of the lines of magnetic force with an external force that exceeds the magnetic force.
  • FIG. 8A is an exploded perspective view of a simulated eye device including the eyeball movable device 200 to which an elastic member 230 is added.
  • the elastic member 230 has a cylindrical shape, and is provided in a compressed state so as to surround the iron ball 210 between the lower member 30 and the pedestal 220.
  • the elastic member 230 is made of a sponge-like substance that is deformed by an external force and is restored when the external force is released.
  • the material, shape, and thickness of the sponge-like substance are not particularly limited, but the material, thickness, and inner diameter of the sponge-like substance are the same as those felt when the eyeball is swung during human eye surgery. Is adjusted.
  • the material for the sponge material is preferably urethane foam, but a spongy material such as melamine foam, a fibrous hair material such as polyester or cotton, or the like may be used.
  • FIG. 8B is a cross-sectional view of the simulated eye device in a normal state in which no external force is applied
  • FIG. 8C is a cross-sectional view in a state in which the simulated eye 10 is turned by applying an external force.
  • the simulated eye 10 is restored to the state shown in FIG. 8B by the restoring force of the elastic member 230.
  • the simulated eye 10 is turned by an external force, the same resistance as when the human eye is turned by the restoring force of the elastic member 230 is obtained, and the simulated eye 10 returns to its original state when the force is removed. And more realistic surgical simulation.
  • FIG. 9A and 9B show an embodiment in which the simulated eye 10 is not a hemisphere but a sphere.
  • 9A is a cross-sectional view in a normal state
  • FIG. 9B is a cross-sectional view after turning.
  • a magnet 80 is installed on the bottom wall 38 of the lower member 30 formed in a spherical shape opposite to the corneal apex 10p so that the direction of the magnetic force line Z passes through the corneal apex 1p. If the member 230 is disposed around the iron ball 210 between the spherical bottom wall 38 and the pedestal 220, the same effect as in the case of the hemispherical simulated eye 10 can be obtained. However, at this time, the turning radius of the spherical simulated eye 10 is slightly increased.
  • the appropriate amount is such that when the simulated anterior lens capsule film 70 is covered from above, the entire lower surface of the film contacts the simulated lens cortex 40 and the center of the film is slightly raised.
  • the simulated anterior lens capsule film 70 cut to an appropriate size is placed on the simulated lens cortex 40 while being stretched with fingers so that the film cannot be wrinkled.
  • the direction of the rough surface is determined according to which method is practiced as CCC.
  • CCC method is practiced as tearing method
  • the rough surface is placed on top
  • the rough surface is placed on the bottom.
  • the recessed portion 24 on the bottom surface of the upper member 20 is fitted into the annular protrusion 35 of the lower member 30 from above the simulated anterior lens capsule film 70, and the simulated anterior lens capsule film 70 is sandwiched and fixed therebetween.
  • the chitotome 100 which is a hook-like needle from the small hole 26 or 27 of the upper member 20. Or an anterior lens capsule through a large hole 25 to practice CCC.
  • the upper member 20 is removed from the lower member 30 using the ear portion 29, and the position of the simulated anterior lens capsule film 70 is shifted. Then, the uncut film surface is covered on the simulated lens cortex 40, the surface of the simulated lens cortex 40 is smoothed by stroking the finger from above the film, and the upper member 20 is again applied to the lower member 30 as a film. Insert and fix. Then, in the same manner as described above, a small amount of viscoelastic material is applied to the film surface, and CCC is practiced in the same manner with the cystome 100 or insulator. In this way, it is possible to practice CCC repeatedly several tens of times in a short time.
  • the cup member 60 containing the selected polymer clay core is placed in the recess 32 of the lower member 30.
  • the simulated anterior lens capsule film 70 in which the CCC is completed is placed on the lower member 30 so that the CCC comes to the center of the opening 34.
  • the upper member 20 from above is fitted and fixed to the annular protrusion 35 of the lower member 30 with the simulated anterior lens capsule capsule 70 interposed therebetween.
  • a pre-chopper (not shown) is inserted from the large hole 25 of the upper member 20 and pierced into the simulated lens nucleus 50S or 50H made of polymer clay. After piercing to a sufficient depth, the tip of the pre chopper is opened and the simulated lens nucleus 50S or 50H is divided into two. Further, after rotating the simulated lens nucleus 50S or 50H by 90 ° using Pre chopper, the nucleus is divided into four in the same manner. In this way, the pre-chop method can be practiced.
  • the simulated ultrasonic oscillator 110 is inserted from the large hole 25 of the upper member 20, the simulated nuclear split hook 120 is inserted from the small hole 26, and the simulated ultrasonic oscillator 110 is polymerized.
  • the simulated lens nucleus 50S or 50H made of clay and inserting the simulated nucleus split hook 120 into the equator of the simulated lens nucleus 50S or 50H made of polymer clay through the CCC already created in the simulated lens capsule 70 The simulated lens nucleus 50S or 50H made of polymer clay is torn into two by the simulated nucleus split hook 120. Thereafter, the same operation is repeated to divide the nucleus into four.
  • the divided simulated polymer nucleus 50S or 50H made of polymer clay is taken out from the simulated eye 10 and kneaded in the hand. Once again, it can be shaped into a nuclear shape and reused. In this way, the nuclear division technique can be practiced easily and repeatedly on the desk at home.
  • the simulated eye 10 of the present invention in which the simulated lens nucleus 50S or 50H made of polymer clay is installed is brought into the operating room, and an ultrasonic cataract surgical device is used under a microscope. You can also practice nucleation and emulsification. However, care should be taken because the simulated lens core made of polymer clay tends to clog the ultrasonic chip.
  • lens nucleus splitting procedure using pre-split plastic simulated lens nucleus 50A, 50B or 50C
  • the simulated eye apparatus of the present invention can select simulated lens nuclei for three typical techniques: Divide & Conquer method, Stop & Chop method, and Phaco-Chop method.
  • the magnet 80 of the lower member 30 is attracted to the iron ball 210 of the base 220.
  • the cup member 60 containing the simulated lens nucleus 50B for the Stop & Chop method is put into the recess 32 of the lower member 30.
  • the simulated anterior lens capsule film 70 in which the CCC is completed is placed on the lower member 30 with care so that the CCC comes to the center of the opening 34.
  • the upper member 20 from above is fitted and fixed to the annular protrusion 35 of the lower member 30 with the simulated anterior lens capsule capsule 70 interposed therebetween.
  • the simulated ultrasonic oscillator 110 is inserted from the large hole 25 of the upper member 20, and the simulated ultrasonic oscillator 110 is imaged in the groove Gs formed in the simulated lens nucleus 50B for Stop & Chop method in the image of ultrasonic oscillation. Move along and practice digging a ditch.
  • the simulated nucleus split hook 120 is inserted from the small hole 26 of the upper member 20, and further inserted under the simulated anterior lens capsule film 70 via the CCC, and the simulated lens nucleus 50B is rotated by 90 ° to simulate the ultrasonic oscillator. 110 is inserted into the side hole Sp formed in the simulated lens nucleus 50B.
  • the simulated nucleus dividing hook 120 is brought to the equator of the simulated lens nucleus 50B, and the simulated nucleus dividing hook 120 is moved along the dividing line divided in advance to divide the simulated lens nucleus 50B into two. Thereafter, the simulated lens nucleus 50B is rotated 180 ° with the simulated nucleus split hook 120, and the simulated nucleus is divided into four by the same operation. Although the simulated lens nucleus 50B is divided into four parts, the four-divided pieces naturally gather in the center in the cup member 60 and return to the state of one block in contact with each other. In this way, you can practice Stop & Chop nuclear splitting procedures as many times as you like.
  • the Divide & Conquer method by changing the simulated lens nucleus to the simulated lens nucleus 50A for practice of the Divide & Conquer method or the simulated lens nucleus 50C for practice of the Phaco-Chop method, the Divide & Conquer method, Phako- You can also practice the Chop method.
  • a sheet made of a soft material such as soft vinyl chloride resin or urethane resin is placed on it. It may be cut and pasted into a simulated sclera / cornea 90. Then, the magnet 80 of the lower member 30 of the simulated eye 10 is attracted to the iron ball 210 of the pedestal 220, and the sclera or corneal incision is practiced using a sclera such as a keratome or a crescent knife or a surgical knife for corneal incision. I do.
  • FIG. 5C As one of the sclera or corneal incision, an example of how to practice scleral / corneal tunnel incision will be described with reference to FIG. 5C in which FIG. 5A is enlarged.
  • the simulated sclera / cornea 90 is the same member, but in the following description, it is referred to as the simulated sclera 90 or the simulated cornea 90 corresponding to the part to which it is attached.
  • an external incision X1 is first created with a keratome for the simulated sclera 90 located at the base 21, and then an interlayer incision X2 is created with a crescent knife.
  • the inner incision X3 is created in the simulated cornea 90 positioned in the large hole 25 by drilling inward again using a keratome, and the sclera / corneal tunnel incision X is completed.
  • This scleral / corneal tunnel incision is a self-closing wound and does not require suturing, so it is the mainstream surgical technique at present.
  • the sclera / corneal tunnel incision X created in the simulated cornea 90 and practiced for the above-mentioned continuous circular anterior capsulotomy and nuclear splitting technique
  • the sclera / cornea is moved when the instrument is moved.
  • the resistance experienced by the tunnel incision X allows the user to experience a resistance that approximates the operation with the human eye, and allows more realistic and effective surgical practice.
  • FIG. 5B The right side of FIG. 5B shows the method (1) above, and the left side of FIG. 5B shows the method (2) above.
  • the simulated sclera / cornea 90 is attached to the lower member 30 of the simulated eye 10. Affixed to the outer wall. At this time, the upper member 20 of the simulated eye 10 may be attached or removed. If removed, the portion can be used as the simulated cornea 90 if it is pasted so that there is a portion protruding from the lower member 30 above the simulated sclera / cornea 90.
  • this protruding portion is regarded as a simulated cornea 90, and an internal incision X3 is created following the interlayer incision X2, or simply a corneal incision practice using a keratome or the like May be performed.

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Abstract

L'invention concerne un système d'oeil simulé destiné à être utilisé pour la formation aux techniques de chirurgie de la cataracte. Le système d'oeil simulé pour la formation à la chirurgie de la cataracte comporte : un élément côté inférieur doté d'une cuvette ouverte sur le dessus présentant une ouverture circulaire; un élément côté supérieur relié de façon détachable audit élément côté inférieur et doté d'une zone toroïdale dans laquelle est formé un trou destiné à insérer un instrument; un cortex de cristallin simulé qui est logé dans la cuvette et caractérisé par une consistance molle similaire à celle du cortex de cristallin d'un oeil humain; une capsule antérieure simulée de cristallin placée entre l'élément côté inférieur et l'élément côté supérieur et constituée d'un film présentant des propriétés similaires à la capsule antérieure du cristallin d'un oeil humain; et un moyen d'application de tension capable d'appliquer une tension uniforme similaire à la tension de la capsule antérieure du cristallin de l'oeil humain sur 360o au film de la capsule antérieure simulée du cristallin dans un état où le film de la capsule antérieure simulée du cristallin est en contact avec le cortex de cristallin simulé. Du fait de cette constitution, il est possible de s'entraîner de façon facile et répétée à la plupart des techniques de chirurgie de la cataracte, comme la capsulotomie antérieure circulaire continue et la segmentation du noyau du cristallin. De plus, une opération chirurgicale simulée peut être menée de façon réaliste et reproduisant de près un cas où l'on traite un oeil humain.
PCT/JP2009/051008 2009-01-22 2009-01-22 Système d'oeil simulé pour la formation à la chirurgie de la cataracte Ceased WO2010084595A1 (fr)

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