JP6601945B2 - Intraocular lens insertion device - Google Patents

Description

  The present invention relates to an intraocular lens insertion device.

  Intraocular lenses that are inserted as a substitute for the lens for the replacement of the human turbid lens and the correction of refraction in the treatment of cataract are being put to practical use. In intraocular lens insertion surgery for cataract treatment, for example, a few millimeter incision wound (incision) is provided at the edge of the cornea, and the lens is crushed and removed from the incision by ultrasonic phacoemulsification The intraocular lens is inserted and fixed.

  In recent years, when an intraocular lens is inserted into an eyeball through an incision, a so-called preload (or preset) type intraocular lens insertion device in which the intraocular lens is previously placed in a storage unit is used. There are many. The user inserts the distal end opening of the insertion tube portion provided at the distal end portion of the instrument body into the eyeball through the above-mentioned incision, and in the state where the intraocular lens is slightly deformed in the instrument body, The intraocular lens is released and inserted into the eyeball by being pushed out from the tip opening by a rod-like plunger. By using such an insertion device, the intraocular lens can be easily inserted into the eyeball using the incision formed for the removal of the crystalline lens. Astigmatism and infection can be suppressed.

  By the way, in the process of manufacturing the preload type intraocular lens insertion instrument, after the intraocular lens is loaded into the intraocular lens installation part of the intraocular lens insertion instrument, the loaded intraocular lens is normally loaded. That is confirmed. This is because it is necessary to confirm the positional relationship between the rear support part (hereinafter referred to as the rear support part) and the plunger tip part among the support parts provided before and after the intraocular lens. On the other hand, there has been proposed a technology that supports confirmation of an intraocular lens loaded in the instrument body by providing a hole or the like for confirming the posture of the intraocular lens in the instrument body (Patent Documents 1 to 3). 4).

JP 2000-005204 A JP-T 9-508810 JP 2006-230707 A JP 2009-160138 A

  However, in the intraocular lens insertion devices of Patent Documents 1 to 4, it is difficult to visually recognize the details of the positional relationship between the support portion of the intraocular lens and the distal end portion of the plunger from a hole or the like provided in the device body.

  The technology of the present disclosure has been made in view of the above circumstances, and the purpose thereof is to load an intraocular lens into an intraocular lens insertion device or manufacture a preload type intraocular lens insertion device. Another object of the present invention is to provide an intraocular lens insertion instrument capable of visually recognizing the positional relationship between the support part of the intraocular lens loaded in the instrument body and the tip of the plunger.

  An intraocular lens insertion device according to one aspect of the present disclosure is provided with a substantially cylindrical device body having an insertion tube portion for inserting an intraocular lens into the eye at a distal end, and the device body. A storage part that can place an intraocular lens inside the instrument body by storing the lens, and a slide part that is slidable inside the instrument body, and presses the intraocular lens placed in the storage part to move to the insertion tube part An intraocular lens extruding member that is pushed out into the eye, and a support portion of the intraocular lens housed in the housing portion is supported in a predetermined positional relationship by the intraocular lens pushing member, A confirmation window portion is provided that can visually recognize the positional relationship between the support portion of the intraocular lens housed in the housing portion and the pushing member of the intraocular lens. As a result, the positional relationship between the support portion of the intraocular lens and the distal end portion of the plunger can be clearly seen.

  The storage unit has a mounting surface on which the intraocular lens is mounted, and a lid that is provided in the storage unit so as to be openable and closable and faces the mounting surface in the closed state. It is good also as a structure provided. Further, the confirmation window part can be a thin part whose thickness decreases toward the placement surface in the closed state of the lid part. Or a confirmation window part can be made into the opening part which penetrates a cover part toward a mounting surface in the closed state of a cover part. Furthermore, at the manufacturing site, the intraocular lens is previously stored in the intraocular lens insertion device, and the so-called preload type intraocular lens insertion device in which the insertion device and the intraocular lens are integrated is shipped from the manufacturing site and marketed. May be distributed.

  According to the technology disclosed herein, there is no abnormality in the positional relationship between the support portion of the intraocular lens and the distal end portion of the plunger in a state where the intraocular lens is loaded in the main body of the intraocular lens insertion device. I can confirm that. In addition, when the user inserts the intraocular lens, there is no abnormality in the positional relationship between the support portion of the intraocular lens and the distal end portion of the plunger due to the impact on the intraocular lens insertion device during transportation or the like. Can be confirmed. Furthermore, if there is an abnormality in the positional relationship, the user can correct the arrangement of the intraocular lens in the instrument body. As a result, the user can prevent the intraocular lens from being inserted while the positional relationship between the support portion of the intraocular lens and the distal end portion of the plunger remains abnormal.

It is a figure which shows schematic structure of the intraocular lens insertion instrument in one Embodiment. It is a figure which shows the cross section of the stage cover part in one Embodiment. It is a figure which shows schematic structure of the intraocular lens in one Embodiment. It is a figure which shows schematic structure of the nozzle main body in one Embodiment. It is a figure which shows schematic structure of the positioning member in one Embodiment. It is a figure which shows schematic structure of the plunger in one Embodiment. It is a figure which shows schematic structure of the intraocular lens insertion instrument in one Embodiment. It is a figure which shows schematic structure of the confirmation window part of the support part of the intraocular lens in one Embodiment. It is a figure which shows the confirmation state of the position of the support part of the intraocular lens and the front-end | tip part of a plunger in one Embodiment.

  Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, schematic structure of the insertion instrument 1 of this embodiment is shown. 1A is a plan view of the insertion instrument 1 when the stage lid 13 is opened, and FIG. 1B is a side view of the insertion instrument 1 when the stage lid 13 is closed. The nozzle body 10 of the insertion instrument 1 is a cylindrical member having a substantially rectangular cross section, and includes a rear end portion 10b that is largely open at one end portion and an insertion cylinder portion that is narrowed to the other end portion. The nozzle part 15 and the front-end | tip part 10a are provided. As shown in FIG.
The tip portion 10a is opened obliquely. The plunger 30 is inserted into the nozzle body 10 and can reciprocate.

  In the following description, the direction from the rear end 10b of the nozzle body 10 to the front end 10a is the front direction, the opposite direction is the rear direction, the front side of the page in FIG. 1A is the upper direction, and the reverse direction is the lower direction. In FIG. 1B, the front side of the page is the left direction, and the opposite direction is the right direction. In this case, the upper side is the front side of the optical axis of the lens body 2a, which will be described later, the lower side is the rear side of the optical axis of the lens body 2a, the front side is the front side in the pressing direction by the plunger 30, and the rear side is pressed by the plunger 30 Corresponds to the rear side.

  Near the rear end portion 10 b of the nozzle body 10, there is integrally provided a holding portion 11 that protrudes in a plate shape and hooks a finger when the user pushes the plunger 30 toward the distal end side of the nozzle body 10. A stage portion 12 for setting the intraocular lens 2 is provided on the rear side of the nozzle portion 15 in the nozzle body 10. The stage portion 12 opens to the upper side of the nozzle body 10 by opening the stage lid portion 13. Further, a positioning member 50 is attached to the stage portion 12 from the lower side of the nozzle body 10. With this positioning member 50, the intraocular lens 2 is stably positioned on the stage portion 12 even before use (during transportation).

  That is, in the insertion instrument 1, the intraocular lens 2 is placed on the stage unit 12 and the front side of the optical axis is on the upper side when the stage lid unit 13 is opened and the positioning member 50 is attached to the stage unit 12. Set to be. Then, after the stage lid 13 is closed, it is shipped and sold. Furthermore, at the time of use, the user inserts the needle into the stage portion 12 through the needle hole 20a of the insertion portion 20 through the needle hole 20a of the insertion portion 20 and injects the lubricant. Then, the user removes the positioning member 50 with the stage lid portion 13 closed, and then pushes the plunger 30 into the distal end side of the nozzle body 10.

  As a result, the intraocular lens 2 is pressed by the plunger 30 and moved to the nozzle part 15, and then the intraocular lens 2 is released into the eyeball from the distal end part 10 a. In addition, the nozzle body 10, the plunger 30, and the positioning member 50 in the insertion instrument 1 are formed of a resin material such as polypropylene. Polypropylene is a material with a proven track record in medical equipment and high reliability such as chemical resistance.

  FIG. 2 is a cross-sectional view of the stage lid 13 taken along the line AA in FIG. As shown in FIG. 2A, a confirmation window portion 17 is formed by making a part of the stage lid portion 13 a thin portion. Note that how thin the confirmation window 17 in the stage lid 13 should be determined as appropriate based on the material forming the stage lid 13 and the visibility of the intraocular lens from the confirmation window 17. Good. In addition, by forming the confirmation window portion 17, an effect of reducing sink marks when the stage lid portion 13 is molded can be expected.

  FIG. 3 is a diagram showing a schematic configuration of the intraocular lens 2. 3A is a plan view and FIG. 3B is a side view. It is a so-called one-piece type. The intraocular lens 2 includes a lens body 2a having a predetermined refractive power, and two long flat plate-like support portions 2b connected to the lens body 2a for holding the lens body 2a in the eyeball. . The lens body 2a and the support portion 2b are made of a flexible resin material. In the insertion instrument 1 in the present embodiment, one of the two support portions 2b is disposed on the rear side of the lens body 2a, and the other support portion 2b is disposed on the front side of the lens body 2a. The intraocular lens 2 is set on the stage unit 12. In addition, let the support part arrange | positioned at the front side of the lens main body 2a be a front support part, and let the support part arrange | positioned at the rear side of the lens main body 2a be a back support part.

  In the intraocular lens 2 in the present embodiment, the support portion 2b is subjected to a textured process. Thereby, when the intraocular lens 2 is pressed and moved by the plunger 30, the posture of the intraocular lens 2 can be stabilized. Specifically, for example, when the intraocular lens 2 is pressed and moved by the plunger 30, an appropriate frictional force is generated between the support portion 2 b and the inner wall of the nozzle body 10, whereby the intraocular lens 2 is moved to the nozzle body. It can be prevented from rotating within the range 10. In addition, since the support portion 2b is subjected to the embossing process, the support portion 2b can be prevented from sticking to the lens body 2a when the intraocular lens 2 is folded in the nozzle body 10. Further, in the present embodiment, as shown in FIG. 3B, a flat portion 2c is provided at the peripheral portion of the lens body 2a of the intraocular lens 2, that is, the connecting portion between the lens body 2a and the support portion 2b, and the front optical By adopting a configuration in which the effective optical part diameter of the part is reduced, the center thickness of the lens is reduced, the sectional area of the lens is also reduced, and a thin lens shape is realized.

  FIG. 4 shows a plan view of the nozzle body 10. As described above, in the nozzle body 10, the intraocular lens 2 is set on the stage unit 12. In this state, the intraocular lens 2 is pressed by the plunger 30 and released from the distal end portion 10a. In addition, a through hole 10 c whose cross-sectional shape changes according to a change in the outer shape of the nozzle body 10 is provided inside the nozzle body 10. When the intraocular lens 2 is released, the intraocular lens 2 is easily deformed according to a change in the cross-sectional shape of the through hole 10c in the nozzle body 10 and easily enters an incision formed in the patient's eyeball. It is released after being transformed into a shape.

  The tip 10a has a shape that is obliquely cut so that the upper area of the nozzle section 15 is in front of the lower area. Note that the shape of the tip portion 10a that is obliquely cut may be linearly obliquely cut when viewed from the left-right direction, or may have a bulge outward, that is, a curved shape. It may be cut into

  A stage groove 12 a having a width slightly larger than the diameter of the lens body 2 a of the intraocular lens 2 is formed in the stage portion 12. The dimension in the front-rear direction of the stage groove 12 a is set to be larger than the maximum width dimension including the support portions 2 b extending on both sides of the intraocular lens 2. Further, a set surface 12b, which is a mounting surface for the intraocular lens, is formed by the bottom surface of the stage groove 12a. The vertical position of the set surface 12b is set higher than the height position of the bottom surface of the through hole 10c of the nozzle body 10, and the set surface 12b and the bottom surface of the through hole 10c are connected by a bottom slope 10d. .

  The stage unit 12 and the stage lid unit 13 are formed integrally. The stage lid portion 13 has the same size in the front-rear direction as the stage portion 12. The stage lid portion 13 is connected by a thin plate-like connecting portion 14 formed by extending the side surface of the stage portion 12 to the stage lid portion 13 side. The connecting portion 14 is formed to be bendable at the center portion, and the stage lid portion 13 can be closed by overlapping the stage portion 12 from above by bending the connecting portion 14.

  In the stage lid portion 13, ribs 13 a and 13 b for reinforcing the stage lid portion 13 and stabilizing the position of the intraocular lens 2 are provided on the surface facing the set surface 12 b when the lid is closed, and the upper side of the plunger 30. A guide protrusion 13c is provided as a guide. The stage lid portion 13 is provided with a needle hole 20a as an insertion hole for injecting hyaluronic acid into the stage portion 12 with a syringe before the operation of inserting the intraocular lens 2 into the eyeball. The needle hole 20 a is a hole that connects the outside of the stage unit 12 and the intraocular lens 2 housed in the stage unit 12 when the stage lid unit 13 is closed. The user inserts the needle of the syringe through the needle hole 20a before inserting the intraocular lens 2 and supplies hyaluronic acid, which is a viscoelastic substance, to a required position in the stage unit 12.

A positioning member 50 is detachably provided below the set surface 12b of the stage unit 12. FIG. 5 shows a schematic configuration of the positioning member 50. FIG. 5A shows a plan view of the positioning member 50, and FIG. 5B shows a left side view of the positioning member 50. The positioning member 50 is configured as a separate body from the nozzle main body 10, and has a structure in which a pair of side wall portions 51, 51 are connected by a connecting portion 52. At the lower ends of the respective side wall portions 51, holding portions 53, 53 extending outward and extending are formed.

  A pair of first mounting portions 54 and 54 projecting upward are formed inside the side wall portions 51 and 51. Further, first positioning portions 55 and 55 are formed to protrude from the outer peripheral side of the upper end surfaces of the first placement portions 54 and 54. The distance between the inner sides of the first positioning portions 55 and 55 is set slightly larger than the diameter of the lens body 2 a of the intraocular lens 2.

  In addition, a pair of second placement portions 56 and 56 protruding upward are formed inside the side wall portions 51 and 51. The heights of the upper surfaces of the second mounting parts 56 and 56 are equal to the heights of the upper surfaces of the first mounting parts 54 and 54. Furthermore, second positioning portions 57 and 57 that protrude further upward are formed on the outer portions of the upper surfaces of the second placement portions 56 and 56 over the entire left and right direction of the second placement portions 56 and 56. . The distance between the inner sides of the second positioning portions 57 and 57 is set to be slightly larger than the diameter dimension of the lens body 2 a of the intraocular lens 2.

  Further, a third placement portion 58 on which a part of the front support portion of the support portion 2 b of the intraocular lens 2 is placed is formed inside the side wall portions 51, 51. Further, a third positioning portion 59 that protrudes further upward from the third placement portion 58 is formed. A part of the front support part comes into contact with the third positioning part 59. And the 4th mounting part 60 in which a part of back support part is mounted among the support parts 2b of the intraocular lens 2 is formed inside the side wall parts 51 and 51. As shown in FIG. Furthermore, the 4th positioning part 61 which protrudes further upwards from the 4th mounting part 60 is formed. A part of the rear support part comes into contact with the fourth positioning part 61. In addition, as shown in FIG.5 (b), the height of the upper surface of the 4th mounting part 60 and the 4th positioning part 61 is higher than the height of the upper surface of the 1st-3rd mounting part and the 1st-3rd positioning part. Is also provided to be low. On the other hand, on the outside of the side wall portions 51, 51, a rotation preventing wall portion 62 for preventing unnecessary rotation when the positioning member 50 is removed is provided.

  The positioning member 50 is assembled from below the set surface 12 b of the nozzle body 10. The set surface 12b of the nozzle body 10 is formed with a set surface through hole 12c that penetrates the set surface 12b in the thickness direction. The outer shape of the set surface through-hole 12c is substantially similar to the shape of the first to fourth placement portions and the first to fourth positioning portions of the positioning member 50 as viewed from above. When the positioning member 50 is attached to the nozzle body 10, the first to fourth placement portions and the first to fourth positioning portions are inserted into the set surface through hole 12c from the lower side of the set surface 12b, and the set surface It protrudes above 12b.

  When the intraocular lens 2 is set on the setting surface 12b, the bottom surface of the outer peripheral portion of the lens body 2a is placed on the upper surfaces of the first placement portions 54 and 54 and the second placement portions 56 and 56. The Further, the position of the lens body 2a is restricted with respect to the horizontal direction (the direction horizontal to the set surface 12b) by the first positioning portions 55, 55 and the second positioning portions 57, 57. Furthermore, the two support portions 2b of the intraocular lens 2 are placed on the upper surfaces of the third placement portion 58 and the fourth placement portion 60, respectively. Further, the positions of the two support portions 2b are restricted with respect to the horizontal direction by the third positioning portion 59 and the fourth positioning portion 61, respectively.

FIG. 6 shows a schematic configuration of the plunger 30. The plunger 30 has a slightly larger longitudinal length than the nozzle body 10. And it forms from the action part 31 of the front end side based on a column shape, and the insertion part 32 of the rear end side based on a rectangular rod shape. And the action part 31 is comprised including the cylindrical part 31a made into the column shape, and the thin plate-shaped flat part 31b extended in the left-right direction of the cylindrical part 31a.

  A cutout portion 31 c is formed at the distal end portion of the action portion 31. As can be seen from FIG. 6B, the notch 31 c is formed in a groove shape that opens downward in the action portion 31 and penetrates in the left-right direction. Further, as can be seen from FIG. 6B, the groove wall on the tip side of the notch 31 c is formed with an inclined surface that goes downward as it goes to the tip side of the action portion 31.

  In addition, slits 31d and 31f are formed in the middle of the front and rear direction of the left and right flat portions 31b and in the vicinity of the base end. The slits 31d and 31f are formed to have a substantially L shape including a cut extending in the left-right direction and a cut extending in the front-rear direction. Moreover, movable pieces 31e and 31g are formed in the flat part 31b by forming slits 31d and 31f. The movable pieces 31e and 31g perform a so-called axis deviation prevention function so that the cylindrical portion 31a is positioned at the center in the left-right direction of the nozzle body 10 when the plunger 30 moves in the nozzle body 10. In this embodiment, two pairs of movable pieces 31e and 31g are formed, but only one pair or three or more pairs may be formed.

  The insertion portion 32 has a substantially H-shaped cross section as a whole, and the horizontal and vertical dimensions thereof are set slightly smaller than the through hole 10 c of the nozzle body 10. In addition, a disc-shaped pressing plate portion 33 is formed at the rear end of the insertion portion 32 so as to spread in the vertical and horizontal directions.

  A claw portion 32 a that protrudes toward the upper side of the insertion portion 32 and can be moved up and down by the elasticity of the material of the plunger 30 is formed at a portion of the insertion portion 32 that is ahead of the center in the front-rear direction. When the plunger 30 is inserted into the nozzle body 10, the locking hole 10e shown in FIG. 1 provided in the thickness direction on the upper surface of the nozzle body 10 and the claw portion 32a are engaged. The relative position between the nozzle body 10 and the plunger 30 in the initial state is determined. It should be noted that the claw portion 32a and the locking hole 10e are formed at the positions where the distal end of the action portion 31 is located on the rear side of the lens body 2a of the intraocular lens 2 set on the stage portion 12 in the engaged state. The support portion 2b on the rear side of the main body 2a is set so that the cutout portion 31c can be supported from below. Also in the insertion part 32, a substantially L-shaped slit composed of a notch extending in the left-right direction and a notch extending in the front-rear direction may be formed, similarly to the slits 31d and 31f. The slit formed in the insertion portion 32 in this way also functions to prevent the axis deviation of the plunger 30.

  In FIG. 7, the perspective view of the intraocular lens insertion instrument 1 of this embodiment is shown. The intraocular lens insertion instrument 1 includes a nozzle body 10 as an instrument body, a plunger 30 as an intraocular lens pushing member, a stage unit 12 and a stage lid unit 13 as an intraocular lens storage unit. The stage unit 12 is provided integrally with the nozzle body 10 or separately. A plunger 30 is inserted into the nozzle body 10. The intraocular lens 2 is set on the stage unit 12. The stage unit 12 is formed integrally with the stage lid unit 13.

FIG. 7 shows a state where the stage lid 13 is opened. FIG. 7 shows the upper surface of the stage lid 13. The stage lid portion 13 is provided with a needle insertion portion 20 of a syringe filled with an intraocular lens lubricant. Further, the nozzle body 10 is provided with a set surface through hole 12c for assembling the positioning member 50 of the intraocular lens 2. Further, the stage lid portion 13 has a confirmation window portion for confirming the positional relationship between the intraocular lens placed on the stage portion 12 and the distal end portion of the plunger 30 after the stage lid portion 13 is closed. 17 is formed. Details of the positioning member 50 will be described later. As can be seen from the description of FIG. 1, FIG. 7 is a perspective view of the intraocular lens insertion device 1 as viewed from below. Accordingly, the insertion portion 20 is provided so as to protrude outside the stage lid portion 13 when the stage lid portion 13 is closed.

  In FIG. 8, the enlarged view of the stage part 12 and the stage cover part 13 is shown. As shown in FIG. 8, the insertion part 20 provided in the stage cover part 13 is used for guiding the needle hole 20a which is a hole for inserting a needle of the syringe and the tip of the needle of the syringe into the needle hole 20a. It has a guide wall 20b. The guide wall portion 20b also has a function of limiting the movement, inclination, rotation, and the like of the needle after the needle of the syringe is inserted into the needle hole 20a. The intraocular lens 2 is placed and positioned on the stage unit 12. When the positioning of the intraocular lens 2 with respect to the stage portion 12 is completed, the stage lid portion 13 is closed by rotating the stage lid portion 13 around the connecting portion 14 with the stage portion 12.

  The confirmation window portion 17 provided in the stage lid portion 13 is formed as a substantially rectangular thin portion that is thinner than other portions of the stage lid portion 13. As shown in FIGS. 7 and 8, the confirmation window portion 17 is formed on the rear end side of the nozzle body 10 in the stage lid portion 13. The stage lid 13 is formed of a resin that transmits visible light. For this reason, the user of the intraocular lens insertion instrument 1 confirms the intraocular lens 2 placed on the stage unit 12 from the confirmation window unit 17 which is a thin wall part after the stage lid unit 13 is closed. Can do. In this embodiment, since the guide protrusion 13c is provided at the center of the confirmation window, the confirmation window has a shape having two small windows.

  Next, when the plunger 30 is pushed into the nozzle body 10, the plunger 30 contacts the intraocular lens 2 placed on the stage unit 12. When the plunger 30 is further pushed, the intraocular lens 2 is moved from the stage portion 12 to the tip portion 10 a of the nozzle body 10 through the nozzle portion 15 connected to the stage portion 12. And the intraocular lens 2 is extruded from opening of the front-end | tip part 10a.

  Prior to the accommodation of the intraocular lens 2 of the insertion instrument 1 configured as described above, the plunger 30 is inserted into the nozzle body 10 and disposed at the initial position. Further, as described above, the positioning member 50 is attached to the nozzle body 10 from below the set surface 12b. Thereby, the 1st mounting parts 54 and 54 of the positioning member 50, the 2nd mounting parts 56 and 56, the 3rd mounting part 58, and the 4th mounting part 60 are hold | maintained in the state protruded to the set surface 12b. .

  Next, the lens main body 2a of the intraocular lens 2 is mounted on the upper surfaces of the first mounting sections 54 and 54 and the second mounting sections 56 and 56 with the support sections 2b and 2b facing the nozzle body 10 in the front-rear direction. Placed and positioned. In this state, the front support portion of the support portion 2 b of the intraocular lens 2 is supported by the third placement portion 58, and the rear support portion is supported by the fourth placement portion 60.

  When inserting the intraocular lens 2 into the eyeball, the user removes the positioning member 50 from the nozzle body 10 after injecting an appropriate amount of hyaluronic acid from the injection hole 16. Thereby, the first mounting portions 54 and 54 and the second mounting portions 56 and 56 that have supported the lens body 2a of the intraocular lens 2 and the third mounting portion 58 and the second mounting portion 58 that have supported the supporting portion 2b. The four placement portions 60 are retracted from the set surface 12b, and the intraocular lens 2 is placed on the set surface 12b so as to be movable.

Then, the user confirms from the confirmation window portion 17 of the stage lid portion 13 that the rear support portion of the support portion 2 b of the intraocular lens 2 is supported by the notch portion 31 c at the tip of the plunger 30. If the positional relationship between the distal end portion of the plunger 30 and the support portion 2b of the intraocular lens 2 is normal, the support portion 2b is supported by the notch portion 31c of the plunger 30 from the confirmation window portion 17, as shown in FIG. Then, it can be visually recognized that a part of the support portion 2 b is placed on the fourth placement portion 60 and is in contact with the fourth positioning portion 61. Subsequently, the user inserts the distal end portion 10a of the nozzle portion 15 of the nozzle body 10 into an incision provided in the eye tissue. Here, since the front-end | tip part 10a has a diagonal opening shape, insertion to an incision can be performed easily. Then, after inserting the nozzle portion 15 into the incision, the user pushes the pressing plate portion 33 of the plunger 30 into the distal end side of the nozzle body 10. Thereby, the front-end | tip part 31c of the action part 31 of the plunger 30 contact | abuts to the lens main body 2a outer periphery of the intraocular lens 2 set to the setting surface 12a, and the intraocular lens 2 faces the front-end | tip part 10a with the plunger 30. It is guided and released into the eye from the opening of the tip 10a.

  The above is the description of the present embodiment, but the configuration of the insertion portion and the like is not limited to the above-described embodiment, and various modifications can be made without departing from the technical idea of the present invention. Is possible. In the above description, a single rectangular confirmation window is provided on the stage lid, but the shape and number of confirmation windows can be changed as appropriate. In the above description, the confirmation window is formed as a thin part. However, the thickness of the thin part can be reduced to zero, that is, the confirmation window can be an opening that penetrates the stage lid. is there. Even when the confirmation window is an opening, the configuration of the intraocular lens insertion tool other than that is the same as the configuration shown in each of the above drawings.

DESCRIPTION OF SYMBOLS 1 Intraocular lens insertion instrument 2 Intraocular lens 2a Lens main body 2b Support part 10 Nozzle main body 10a The front-end | tip part 10b of a nozzle main body Rear end part 12 of a nozzle main body 13 Stage cover part 17 Confirmation window part 30 Plunger 50 Positioning member

Claims (3)

A substantially cylindrical instrument body having an insertion tube portion for inserting an intraocular lens into the eye at the tip;
A storage unit that is provided integrally with or separately from the instrument body, and that can store the intraocular lens in the instrument body by storing the intraocular lens;
An intraocular lens push-out member that is slidably provided within the instrument main body, presses the intraocular lens disposed in the storage portion, moves the intraocular lens to the insertion tube portion, and pushes it into the eye;
Have
The support part of the intraocular lens housed in the housing part is supported in a predetermined positional relationship by the pushing member of the intraocular lens,
The storage portion is provided with a confirmation window portion capable of visually recognizing a positional relationship between the support portion of the intraocular lens stored in the storage portion and the pushing member of the intraocular lens ,
The storage unit includes a mounting surface on which the intraocular lens is mounted, and a lid that is provided in the storage unit so as to be openable and closable and faces the mounting surface in the closed state.
The lid portion is formed around the confirmation window portion, a flat portion formed around the confirmation window portion and thicker than the confirmation window portion, and an edge formed around the flat portion and thicker than the flat portion. And
The confirmation window is non-penetrating, and the distal end of the push-out member and the support of the intraocular lens when viewed from the optical axis direction of the intraocular lens in a state where the intraocular lens is housed in the housing Formed at the position where
An intraocular lens insertion device. The intraocular lens insertion device according to claim 1 , wherein the confirmation window portion is a thin-wall portion whose thickness decreases toward the placement surface when the lid portion is closed. The intraocular lens insertion device according to claim 1 or 2 , wherein an intraocular lens is previously stored in the storage portion of the intraocular lens insertion device.

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