Source: https://patents.google.com/patent/JP5874351B2/en
Timestamp: 2019-12-07 00:04:59
Document Index: 14352815

Matched Legal Cases: ['art 10', 'art 2', 'art 120', 'art 113', 'art 2', 'art 113', 'art 2', 'art 120', 'art 2', 'art 2', 'art 120', 'art 2', 'art 113', 'art 121', 'arts 205', 'art 10', 'art 121', 'art 121', 'art 211', 'art 121', 'art 120', 'art 100', 'art 121', 'art 121', 'art 211', 'art 100', 'art 10', 'art 2', 'art 2', 'art 112', 'art 113', 'art 121', 'art 215']

JP5874351B2 - Intraocular lens insertion system - Google Patents
JP5874351B2
JP5874351B2 JP2011260879A JP2011260879A JP5874351B2 JP 5874351 B2 JP5874351 B2 JP 5874351B2 JP 2011260879 A JP2011260879 A JP 2011260879A JP 2011260879 A JP2011260879 A JP 2011260879A JP 5874351 B2 JP5874351 B2 JP 5874351B2
JP2011260879A
JP2013111282A (en
砂田　力
2011-11-29 Application filed by 株式会社ニデック filed Critical 株式会社ニデック
2011-11-29 Priority to JP2011260879A priority Critical patent/JP5874351B2/en
2013-06-10 Publication of JP2013111282A publication Critical patent/JP2013111282A/en
2016-03-02 Publication of JP5874351B2 publication Critical patent/JP5874351B2/en
The present invention has a holder for fixing and holding an unused intraocular lens insertion instrument, and an intraocular lens is inserted into the eye using the intraocular lens insertion instrument released from the fixing and holding by the holder. The present invention relates to a lens insertion system.
A foldable soft intraocular lens used as an alternative to a lens removed during cataract surgery is injected into the eye in a small folded state using an intraocular lens insertion device called an injector. As injectors, in addition to a configuration in which an intraocular lens is set from the outside at the time of use, a preset type that is stored and transported in a state where the intraocular lens is set in advance inside is known.
For example, as a preset type injector, the intraocular lens that has been stored outside the extrusion shaft by the restriction means during storage is pushed onto the extrusion shaft, thereby releasing the restriction state and making the intraocular lens usable. The thing is known (refer patent document 1). In addition, in a preset type injector, an intraocular lens insertion system in which the main body of the injector is fixed and held by a holder (packaging material) at the time of storage so as not to cause problems such as damage to the intraocular lens due to an impact generated during transportation. It is known (see Patent Document 2). For example, in the intraocular lens insertion system of Patent Document 2, the fixation of the intraocular lens is released in conjunction with the operation of removing the injector from the holder.
JP 2006-197994 A JP 2007-089915 A
By the way, in the intraocular lens insertion system, it is preferable that the storage state is stably maintained and the storage state is released with as few procedures as possible during use. For example, an injector having a configuration shown in Patent Document 1 is required to be in a use state with a simpler operation without being erroneously released from the restriction by the restriction means during storage.
The present invention provides an intraocular lens insertion system in which the storage state of the intraocular lens is stably maintained when not in use and the restriction of the intraocular lens is released by a simple operation in view of the above-described problems of the prior art. It is a technical subject to do.
(1) In an intraocular lens insertion system comprising: an intraocular lens insertion device for folding a soft intraocular lens; and a holder for fixing and holding at least a part of the intraocular lens insertion device. An insertion instrument has an inner wall for folding a soft intraocular lens, an insertion part for inserting the intraocular lens folded from an incision of an eyeball, and a cylindrical part body provided with the insertion part at a distal end A push-out means for pushing out the intraocular lens placed on the push-out shaft is provided so as to be movable back and forth in the axial direction. A lens moving unit for moving the intraocular lens from a storage position for storing the intraocular lens to a pushing position for pushing out the intraocular lens by the pushing means, and the holder is disposed at the storage position. Is In addition, a regulating member that regulates movement of the lens moving part in the push-out position direction without contacting the intraocular lens is provided , and in conjunction with an operation of removing the holder with respect to the intraocular lens insertion instrument, The movement restriction of the lens moving part in the push-out position direction by the restriction member is released .
According to the present invention, it is possible to provide an intraocular lens insertion system in which the storage state of the intraocular lens is stably maintained when not in use, and the restriction of the intraocular lens is released by a simple operation.
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of an intraocular lens insertion system 1 when not in use. FIG. 2 is a perspective view of each component of the intraocular lens insertion system 1. The intraocular lens insertion device 1 a (hereinafter referred to as an injector 1 a) and a packaging material 1 b (hereinafter referred to as a holder 1 b) are divided. Show. FIG. 3 is a cross-sectional view of the intraocular lens insertion system 1 and shows a cross-sectional view of the intraocular lens insertion system 1 of FIG. 3A is a cross-sectional view of the intraocular lens insertion system 1 in a storage state, and FIG. 3B is a cross-sectional view of the intraocular lens insertion system 1 in a use state. FIG. 4 is an explanatory diagram of the configuration of the plunger, and FIG. 5 is an explanatory diagram of the configuration of the intraocular lens moving unit 100 (hereinafter referred to as the lens moving unit 100).
In FIG. 1, an intraocular lens insertion system 1 is composed of an injector 1a that is an insertion instrument body for inserting an intraocular lens 2 into the eye, and a holder 1b for fixing and holding the injector 1a.
The injector 1a includes a cylindrical body (hereinafter referred to as a main body) 30, an extrusion member (hereinafter referred to as a plunger) 40, and a lens moving portion 100. The main body 30 includes an insertion portion 10 and a placement portion 20. Prepare. In addition, a grip portion 31 is formed on the outside of the main body (cylinder portion 30) for the operator to grip when the injector 1a is used. The injector 1a is formed by molding using a resin material or the like, cutting by resin cutting, or the like.
Here, the intraocular lens 2 stored in the lens moving unit 100 is a one-piece type intraocular lens in which the optical unit 2a and the pair of support units 2b are integrally formed of a flexible material (see FIG. 5). The one-piece type intraocular lens is formed of a conventionally known foldable soft intraocular lens material such as a simple substance such as HEMA (hydroxyethyl methacrylate) or a composite material of acrylic ester and methacrylic ester. . In addition to this, a well-known lens that can be bent using the injector 1a is used as the intraocular lens. For example, a three-piece intraocular lens, a plate-type intraocular lens, and the like that are integrated after forming the optical part and the pair of support parts as separate members may be used.
The insertion portion 10 of the main body 30 has a hollow cylindrical shape having a region (inner wall shape) in which the inner diameter of the passage gradually decreases (thinner) toward the distal end 11, and the intraocular lens 2 is exposed to the outside at the distal end 11. A notch (bevel) that defines the opening direction when the paper is sent out is formed. The intraocular lens 2 passes through the insertion part 10 and is folded small along the inner wall, and is sent out from the distal end 11 to the outside.
The placement unit 20 of the main body 30 is formed at the proximal end of the insertion unit 10 and forms a placement surface and a space (gap) on which the intraocular lens 2 that has been stored by the lens moving unit 100 is released. Further, a through hole (not shown) for allowing a part of the holder 1b to pass therethrough is formed on the back surface side (side facing the holder 1b) of the mounting portion 20, and the holder 1b that has passed through the through hole. In this way, the restriction of the intraocular lens 2 by the lens moving unit 100 is suitably maintained. A detailed description of the configuration for maintaining the storage state of the intraocular lens 2 with the holder 1b will be given later.
The lens moving unit 100 is used as a lid member that closes the opening (the figure number is omitted) of the mounting unit 20 in a state where the intraocular lens 2 is stored in advance, and is outside the extrusion shaft L when the injector 1a is stored and transported. There is a restricting means for restricting the movement of the intraocular lens 2 without applying stress at the position. Moreover, it has a releasing means for releasing the restriction of the intraocular lens 2 outside the extrusion shaft L and moving it onto the extrusion shaft L when the injector 1a is used.
The plunger 40 is a member that pushes the intraocular lens 2 in the insertion portion 10 to be folded into a small size, and pushes it out of the tip 11 into the eye. As shown in FIG. 4, the plunger 40 has a pressing portion 41 pressed by the operator, a shaft base portion 42 connected to the pressing portion 41, an extrusion rod 43 connected to the shaft base portion 42, and a distal end of the extrusion rod 43. It is comprised from the front-end | tip 44 which is connected and contact | abuts to the optical part 2a at the time of extrusion of the intraocular lens 2. FIG. With such a configuration, the plunger 40 is inserted through a passage connecting from the main body 30 to the tip of the insertion portion 20 so as to advance and retreat in the axial direction. Then, the intraocular lens 2 placed on the placement surface during use is pushed by the distal end 44 of the plunger 40, whereby the intraocular lens 2 is folded along the inner wall of the insertion portion 10.
In the perspective view of FIG. 5, the lens moving unit 100 cancels the restriction of the intraocular lens 2 by the storage unit 110 for storing (regulating) the unused intraocular lens 2 without applying stress. It is comprised with the combination with the cancellation | release part 120 made into a use state. The state in which no stress is applied to the intraocular lens 2 includes a state in which a stress that does not cause unintended deformation is applied when the intraocular lens 2 is stored for a long period of time.
The storage unit 110 is a part of the base 111 for inserting the base 111, the restriction units 112 and 113 for restricting the movement of the intraocular lens 2 placed on the base 111, and a part of the release means 120. It is composed of a plurality of through holes 115 and the like formed by punching through.
The base 111 is formed in a size and shape that closes to the opening of the placement unit 20. The restricting portions 112 and 113 are formed in a columnar shape extending vertically from the base 111 toward the inside of the main body 30 in a state where the lens moving portion 100 is closed to the opening of the placement portion 20. The restricting unit 112 is provided at a position along (in contact with) the outer peripheral shape of the optical unit 2 a of the intraocular lens 2, and suppresses the movement and rotation of the intraocular lens 2 in the horizontal direction with respect to the base 111. The restricting portion 113 is provided at a position slightly outside the outer edge of the optical portion 2a placed on the base 111, a columnar portion 113a extending in a direction perpendicular to the base 111, and a tip of the columnar portion 113a. Is bent inward (center of the optical portion 2a) and is formed with a tip portion 113b formed to have a length that extends a predetermined amount in the horizontal direction. In addition, the length of the front-end | tip part 113b should just be formed in the length extended to the range which can contact the optical part 2a set | placed on the base 111 at least.
The columnar part 113a as described above suppresses the movement of the optical part 2a in the left-right direction (horizontal direction) with respect to the base 111. Further, the optical portion 2a is supported by the distal end portion 113b in the pressing direction by the releasing means 120.
The distal end portion 113b is not deformed by the force generated by the weight or movement (fine movement) of the intraocular lens 2, but is formed with a thickness having a predetermined flexibility and strength that is deformed by the pressing force applied from the release means 120. Is done. As a result, the pressing from the releasing means 120 causes the leading end 113b to be deformed along the pushing direction with reference to the connection position (bending position) between the columnar portion 113a and the leading end 113b, so that the restriction by the leading end 113 is released. become.
The through-hole 115 through which a part of the release part 120 passes has a position corresponding to each part (optical part 2a, support part 2b) of the intraocular lens 2 placed on the base 111 during storage, and the axis of the plunger 40. It is formed at a position corresponding to the protruding portion 124. As a result, the entire intraocular lens 2 is pressed uniformly (with good balance) by the pressure applied from the release portion 120 that has passed through the through hole 115. Further, the pivoting portion 124 stabilizes the movement of the plunger 40 in the front-rear direction.
In the present embodiment, the tip 113b is pushed and deformed by a part of the release part 120 that passes through the through hole 115a formed in the gap between the optical part 2a and the columnar part 113a. Thereby, the intraocular lens 2 comes to move on the extrusion axis | shaft L, without contacting the front-end | tip 113b.
The releasing means 120 releases the restriction by the restricting portions 112 and 113 by the pressing of the pushing portion 121 and the pressing portion 121 applied by the surgeon when the restriction of the intraocular lens 2 by the storage portion 110 is released. A plurality of abutting portions 123 for moving the lens 2 onto the extrusion shaft L, and a pivoting portion 124 for suppressing the axial blur of the plunger 40 are provided.
The pushing part 121 has a predetermined area so as to facilitate the pushing operation by the operator, and contact areas 121a to 121d that come into contact with a regulating member 210 (described later) formed on the holder 1b during storage. Here, the injector 1a is held by the holder 1b by forming at least a part of the width of the pushing portion 121 (the length in the direction perpendicular to the extrusion shaft) wider than the width of the main body 30 (mounting portion 20). In this state, contact areas 121a to 121d are formed to be in contact with a regulating member 210 described later. As a result, even when the pushing portion 121 is pressed when the injector 1a is held by the holder 1b, the pushing portion 121 is contacted by the pushing portion 121 (contact areas 121a to 121d) and the regulating member 210. Movement in the pushing direction is suppressed. This prevents the intraocular lens 2 from being erroneously used during storage.
The plurality of abutting portions 123 are formed so that their tip shapes are substantially equal to (slightly smaller than) the opening shape of the corresponding through-hole 115 so that the through-hole 115 can pass through. The length of the abutting portion 123 is a length that abuts on each part of the intraocular lens 2 when the pushing portion 121 is pushed, and pushes the intraocular lens 2 when the releasing portion 120 is pushed completely. The length to be pushed on the axis L is determined.
Further, the tip of the contact portion 123 is used as a placement surface of the intraocular lens 2 when the release portion 120 is completely pushed. As a result, the push-out operation of the intraocular lens 2 by the plunger 40 is performed without removing the release unit 120 in a state where the release unit 120 is completely pushed.
Of the plurality of contact portions 123, the contact portion 123a formed in accordance with the position of the through hole 115a passes through the through hole 115a and is brought into contact with the tip 113b as the push portion 121 is pushed. become. Then, the tip 113b is pushed outward by the stress applied from the tip 123a, and the restriction of the intraocular lens 2 by the tip 113b is released.
A groove 124 a having a shape substantially matching the outer shape of the plunger 40 is formed on the upper surface of the contact portion 124. When the releasing means 120 is completely pushed in, the groove 124a is aligned with the position of the pushing shaft L of the plunger 40 and used as a pushing mechanism of the plunger 40. In the present embodiment, the front end (upper surface) of the contact portion 123 corresponding to the support portion 2b is also substantially matched to the outer shape of the push-out shaft 43 of the plunger 40, and the front-rear direction of the intraocular lens 2 (extrusion). A groove 125 extending in the axial direction is formed, and is similarly used as an axising mechanism for the plunger 40.
With the configuration as described above, the intraocular lens 2 is stored in a state in which no stress is applied by the plurality of regulating units 112 and 113 of the storage unit 110. Further, when the injector 1a is stored, the position of the release portion 120 is fixed and held by the holder 1b (the regulating member 210), so that the storage state is stably maintained. On the other hand, when the injector 1a is removed from the holder 1b during use, the restriction is easily released in conjunction with the release portion 120 being separated from the restriction member 210. In addition, the intraocular lens 2 can be easily moved from the storage position (outside of the push shaft) to the push position by the plunger 40 (on the push shaft) simply by pressing the release portion 120 by the operator in a state where the restriction is released. Will come to be.
1 to 3, the holder 1 b includes a wall 202 that surrounds the injector 1 a, a misalignment prevention mechanism for restricting movement of the injector 1 a in the front-rear direction (axial direction), and lens movement inside the wall 202. And a regulating member 210 for fixing the position of the portion 100.
The wall 202 is formed such that the distance d1 in the front-rear direction is longer than the total length D1 of the injector 1a, and the distance d2 in the left-right direction is formed wider than the width D2 of the injector body 30. Further, the depth h1 of the wall 202 is formed to be approximately the same as or deeper than the maximum height H1 of the injector 1a. As a result, the entire injector 1a is surrounded by the holder 1b, and stress (impact) applied from the outside during storage is prevented from being directly applied to the main body of the injector 1a.
The misalignment prevention mechanism is provided at a plurality of locations on the wall 202 and inside the wall 202. Here, the grooves 203 and 204 formed by cutting out a part of the wall 202 in the depth direction, and the holder 1b. It is comprised from the holding parts 205 and 206 provided inside.
The groove 203 is formed in accordance with the position where the grip portion 31 of the injector 1a is placed during storage, and the interval d3 of the groove 203 is formed to be substantially equal (or slightly wider) than the thickness D3 of the grip portion 31. As a result, the grip portion 31 is positioned in the groove 203, thereby suppressing the movement of the main body 30 in the front-rear (axial) direction within the holder 1b.
The groove 204 is formed in accordance with the position where the pressing portion 41 of the plunger 40 of the injector 1a is placed during storage, and the interval d4 between the grooves 204 is substantially equal (or slightly wider) than the thickness D4 of the pressing portion 41. Has been. As a result, the pressing portion 41 is positioned in the groove 204, thereby suppressing the movement of the plunger 40 in the front-rear direction within the holder 1b.
The sandwiching portion 205 is formed in a column shape extending in the depth direction, and is formed inside the wall 202 corresponding to the connection position between the pressing portion 41 and the shaft base portion 42. A distance d5 between the pair of holding portions 205 is formed such that the shaft base portion 42 having a width D5 is held. As a result, the shaft base portion 42 is held by the holding portion 205, so that movement (displacement) of the plunger 40 in the left-right direction within the holder 1b is suppressed.
The holding portion 206 is provided at the left and right positions corresponding to the insertion portion 10 at a position in front of the holder 1b, and the interval d6 between the pair of holding portions 206 is formed to be substantially equal to the insertion portion 10 diameter D6 at that position. Has been. Thereby, it is suppressed that the taper-shaped insertion part 10 moves to the front-end | tip 11 direction within the holder 1b.
The regulating member 210 is formed inside the wall 202 in accordance with the mounting position of the lens moving unit 100 in order to regulate the lens moving unit 100. The restriction member 210 according to the present embodiment includes columnar restriction portions 211 a to 211 d and a columnar support portion 215.
The restricting portions 211a to 211d are formed in accordance with the positions where the contact areas 121a to 121d of the lens moving portion 100 are placed when the injector 1a is fixedly held in the holder 1b. In addition, here, the spacing between the restricting portions 211a and 211b and the restricting portions 211c and 211d facing each other is formed at a distance that holds the placement portion 20, and the placement portion 20 (the main body of the injector 1a) is placed in the holder 1b. Moving (shifting) in the left-right direction is suppressed.
The heights of the columnar regulating portions 211a to 211d are formed so as to be in contact with the contact areas 121a to 121d (side facing the holder 1b) of the pressing portion 121 during storage. In this embodiment, since the pressing part 121 at the time of storage is formed in the slope which leaves | separates from the extrusion axis | shaft L toward the base end from the front-end | tip 11, from the extrusion axis | shaft L of the release means 121a-121b in the front-end | tip 11 side, the press part 121 is provided. The distance from the pushing shaft L of the release means 121c to 121d on the base end side to the pressing portion 121 is long. For this reason, the height of the restriction portion 211c and the restriction portion 211c on the base end side is formed higher than the height of the restriction portion 211a and the restriction portion 211b on the distal end 11 side.
Thereby, at the time of storage, each regulation part 211a-211d comes to contact | abut uniformly (contact) with the press part 121 of the cancellation | release part 120, and the movement to the extrusion-axis L direction of the lens moving part 100 is regulated. The portions 211a to 211d are uniformly suppressed (restricted).
The support portion 215 is formed at the position of the bottom surface of the holder 1b corresponding to the through hole of the insertion portion 20 described above when the injector 1a is held by the holder 1b. The support portion 215 is formed in a columnar shape having a tip shape that can pass through the through-hole, and the height (length) of the support portion 215 is brought into contact with the restriction portion 113b that stores the intraocular lens 2. Formed in length. With the configuration as described above, even when the injector 1a is held by the holder 1b, even if a stress in the direction in which the restricting portion 113b opens outward is applied by the behavior of the intraocular lens 2, the behavior of the restricting portion 113 is performed. Is suppressed by the support portion 215. Thereby, the storage state of the intraocular lens 2 is suitably maintained.
As described above, the movement of the lens moving unit 100 is restricted in a state where the injector 1a is held by the holder 1b, so that the position fixing of the intraocular lens 2 is prevented from being erroneously released during storage. . In addition, the lens moving unit is regulated with a simple configuration that is simply brought into contact with the regulating member 210. In use, the regulation of the regulating member 210 can be easily released only by removing the injector 1a from the holder 1b. .
Next, an operation when the intraocular lens is attached to the eye using the intraocular lens insertion system having the above configuration will be described.
First, when the injector 1a (intraocular lens 2) shown in FIG. 1 is stored, each configuration of the injector 1a is attached to the position shift prevention mechanism of the holder 1b, and the injector 1a in the holder 1b in the front-rear and left-right directions. Movement is suppressed. Further, the restricting portions 211a to 211d are brought into contact with the contact areas 121a to 121d of the pressing portion 121 of the lens moving portion 100, and the movement of the pressing portion 121 in the pushing direction is restricted. Further, the support portion 215 passes through the through hole of the placement portion 20 and comes into contact with the distal end portion 113b, so that the movement of the intraocular lens 2 in the direction of the extrusion axis L is restricted, and the storage state is stably maintained. . In addition, although illustration here is abbreviate | omitted, the intraocular lens insertion system 1 at the time of the above storage is put in a case, a bag, etc., and is sealed and sterilized.
In the injector 1 a, the opening of the placement unit 20 is closed by the lens moving unit 100 that is a lid member, and the intraocular lens 2 is stored in the injector 1. At this time, the movement of the intraocular lens 2 in the horizontal and vertical directions on the base 111 is restricted in a state where no stress is applied by the holding portions 112 and 113. Further, as described above, in this embodiment, the support portion 215 is brought into contact with the distal end 113b, so that the intraocular lens 2 is stably held by the restriction portion 113.
In order to cancel the storage state as described above and put the injector 1a into a use state, the intraocular lens insertion system 1 is first taken out from a case, a bag, etc. (not shown). Then, as shown in FIG. 3 (b), the operator lifts the injector 1a away from the holder 1b (in the direction of arrow B).
In conjunction with this operation, the gripping portion 31 is disengaged from the groove 203 which is a misalignment prevention mechanism, and the pressing portion 41 is disengaged from the groove 204, so that the plunger 40 can move in the front-rear direction. Moreover, the restriction | limiting of the press part 121 is cancelled | released because each contact area 121a-121d of the press part 121 leaves | separates from each control part 211a-211d of the holder 1b. Further, when the support portion 215 is separated from the tip portion 113b, the restriction of the tip portion 113b is released.
Next, the surgeon releases the storage state of the intraocular lens 2 by the lens moving unit 100. 6 is a cross-sectional view of the injector 1a after being removed from the holder 1b. FIG. 6 (a) shows a state in which the intraocular lens 2 is stored in the lens moving unit 100, and FIG. 6 (b) shows the lens movement. The state where the storage state of the part 100 is released and the intraocular lens 2 is moved onto the extrusion axis L is shown.
In this embodiment, since a part of the lens moving unit 100 is used as a placement surface of the intraocular lens 2, in FIG. 6, the injector 1a with the orientation shown in FIG. A state in which the portion 100 is positioned on the lower side is shown.
First, from the storage state shown in FIG. 6A, when the pressing portion 121 of the release portion 120 is pressed to release the restriction of the intraocular lens 2 by the storage portion 110, the contact portion 123d that has passed through the through hole 115d. Is brought into contact with the tip 113b, and the tip 113b is gradually deformed outwardly by the pressure applied from the push-in portion 121. Further, when the pushing portion 121 is further pushed, each contact portion 123 that has passed through each through hole 115 comes into contact with the intraocular lens 2.
Then, as shown in FIG. 6B, when the release means 120 is completely pushed, the intraocular lens 2 is placed on the placement surface (the tip of the contact portion 123). At this time, generation of a gap between the intraocular lens 2 and the placement surface can be suppressed, so that the intraocular lens 2 has a defect such as a scratch when the plunger 40 rides on or enters the optical unit 2a. It is suppressed. Further, the intraocular lens 2 is placed on the placement surface in a horizontal state without being bent by the pressing of the release means 120. In addition, an axis alignment mechanism for guiding the movement of the plunger 40 in the front-rear direction is formed by the groove 125 and the axis alignment portion 124 that have passed through the through hole (not shown).
With the intraocular lens 2 placed on the mounting surface, the surgeon rotates the injector 1a according to the direction of the bevel of the tip 11 and inserts a known viscoelastic substance from the opening or tip 11 (not shown). Inject into the part 10.
When the pusher 41 is pushed by the surgeon, the plunger 40 is moved in the axial direction along the grooves 124a and 125, which are the above-described shafting mechanisms, so that the movement of the plunger 40 in the front-rear direction is stabilized. Then, when the pushing portion 41 is further pushed from the state in which the distal end 44 is in contact with the peripheral edge (edge) of the optical unit 2a, the intraocular lens 2 is moved toward the distal end 11 side and along the inner wall of the insertion portion 10. It will be gradually bent (rounded).
When the push-in portion 41 is further pushed, the intraocular lens 2 is sent out from the distal end 11 into the eye while being bent, and gradually released in the sac. And a pair of support part 2b is arrange | positioned along a sac, and the optical part 2a comes to be hold | maintained by the stress added from the inside of an eye here.
The present invention is not limited to the above configuration. For example, as shown in the modification of FIG. 7, the regulating member 210 may be formed directly (integrated) on the holder 1b. On the other hand, when the shape of the restricting member 210 is complicated, the holder 1b and the restricting member 210 are formed separately, and the restricting member 210 is assembled to the holder 1b by bonding, welding, fitting by unevenness, or the like. May be. In addition, as shown in FIG. 7, it is expected that the impact on the injector 1a is more suitably prevented by forming the holder 1b so as to surround the whole including the grip portion 13 and the pressing portion 41 of the injector 1a. .
Further, the restriction member 210 may be directly attached to the injector 1a without incorporating the restriction member 210 into the holder 1b. Also in this case, the storage state of the lens moving unit 100 is preferably regulated by the regulating member 210. In addition, the restriction of the lens moving unit 100 can be easily released simply by removing the restriction member 210.
In addition, the restriction member 210 and the holder 1b may be provided with unevenness to be fitted with each other so that the restriction member 210 is left in the injector 1a body when the injector 1a body is removed from the holder 1b. In this case, the surgeon can release the restriction by the restriction member 210 immediately before using the injector 1a.
In the above description, an example in which the intraocular lens 2 is stored outside the extrusion shaft L has been described. In addition to this, even in the case of an injector having a configuration in which the intraocular lens 2 is stored at a position on the extrusion axis L, by providing a regulating member in the moving direction of the lens moving unit, The use state can be suitably classified.
For example, the intraocular lens 2 is placed at a predetermined position on the push-out axis L inside the injector 1a, and a restriction unit for restricting the movement of the intraocular lens 2 in the movement direction (tip 11 side) of the intraocular lens 2 is provided. Thus, the intraocular lens 2 is stored on the axis. Here, the restricting portion is configured to be deformed toward the outside of the main body 30 by the pressure applied from the direction of the extrusion shaft. By the deformation of the restricting portion, the restriction of the intraocular lens 2 is released and the tip 11 is deformed. It can be moved to the side. On the other hand, on the rear side of the intraocular lens 2 at the time of storage, a main body 30 is provided in order to move the slide portion in the front-rear direction, and a slide portion provided in the main body 30 so as to move forward and backward in order to press the regulating portion. There is provided a lens moving part composed of a grip part attached to the slide part through a groove formed in the side part of 30. For the detailed configuration of the injector 1a of the present embodiment, see, for example, Japanese Patent Application Laid-Open No. 2006-181269.
In the injector 1a having the above-described configuration, the holder 1b that holds the injector 1a is provided with a regulating member that abuts the grasping portion and restricts movement of the grasping portion in the axial direction (tip 11 side). Thus, even if the gripping part is accidentally pushed in the axial direction (the direction in which the lens restriction is released) during storage, the movement of the gripping part is restricted by the restriction member, and the storage state of the intraocular lens 2 Will be maintained.
On the other hand, when the injector 1a is used, the lens moving portion is easily released from the regulation by separating the gripping portion from the regulating member in conjunction with the operation of removing the injector 1b from the holder 1b. Then, after the restriction of the lens moving part is released, the holding part is pushed (slid) toward the tip 11 side, so that the restriction of the movement of the intraocular lens 2 by the restricting part is released, and then the intraocular The lens 2 can be pushed toward the tip 11.
It is a perspective view of the intraocular lens insertion system 1 when not in use. It is a perspective view of each component of an intraocular lens insertion system. It is sectional drawing of an intraocular lens insertion system. It is explanatory drawing of a structure of a plunger. It is explanatory drawing of a structure of a lens moving part. It is sectional drawing of the injector removed from the holder and made into the use condition. It is an example of a change of a structure of an intraocular lens insertion system.
DESCRIPTION OF SYMBOLS 1 Intraocular lens insertion system 1a Injector 1b Holder 30 Main body 40 Plunger 100 Lens moving part 112,113 Restriction part 113b Tip part 121a-121d Contact area 210 Restriction member 211a-211d Restriction part 215 Support part
An intraocular lens insertion system comprising: an intraocular lens insertion device for folding a soft intraocular lens; and a holder for fixing and holding at least a part of the intraocular lens insertion device.
The intraocular lens insertion instrument is:
An insertion portion for inserting the intraocular lens, which has an inner wall for folding a soft intraocular lens and is folded from an incision of an eyeball;
A cylindrical body provided at the tip of the insertion section, and a cylindrical body provided with pushing means for pushing out the intraocular lens placed on the pushing shaft so as to be movable forward and backward in the axial direction;
A lens moving part provided in the cylinder body for moving the intraocular lens from a storage position for storing the intraocular lens to an extrusion position for pushing out the intraocular lens by the pushing means; Prepared,
The holder is provided with a regulating member that regulates the movement of the lens moving unit in the push-out position direction without contacting the intraocular lens arranged at the storage position ,
In conjunction with the operation of removing the holder with respect to the intraocular lens insertion device, the movement restriction of the lens moving part by the restriction member in the push-out position direction is released.
An intraocular lens insertion system.
The intraocular lens insertion system of claim 1.
The holder is a member for fixing and holding at least the cylindrical body.
JP2011260879A 2011-11-29 2011-11-29 Intraocular lens insertion system Active JP5874351B2 (en)
JP2011260879A JP5874351B2 (en) 2011-11-29 2011-11-29 Intraocular lens insertion system
EP12194633.9A EP2599460B1 (en) 2011-11-29 2012-11-28 Intraocular lens injection system
JP2013111282A JP2013111282A (en) 2013-06-10
JP5874351B2 true JP5874351B2 (en) 2016-03-02
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JP2011260879A Active JP5874351B2 (en) 2011-11-29 2011-11-29 Intraocular lens insertion system
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JP6364768B2 (en) * 2013-12-26 2018-08-01 株式会社ニデック Intraocular lens insertion system
JP4482705B2 (en) * 2005-01-18 2010-06-16 スター・ジャパン株式会社 Lens insertion device for intraocular insertion
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