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WO2017213231A1 - Outil auxiliaire de poussée de lentille intraoculaire vers l'extérieur - Google Patents

Outil auxiliaire de poussée de lentille intraoculaire vers l'extérieur Download PDF

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Publication number
WO2017213231A1
WO2017213231A1 PCT/JP2017/021355 JP2017021355W WO2017213231A1 WO 2017213231 A1 WO2017213231 A1 WO 2017213231A1 JP 2017021355 W JP2017021355 W JP 2017021355W WO 2017213231 A1 WO2017213231 A1 WO 2017213231A1
Authority
WO
WIPO (PCT)
Prior art keywords
intraocular lens
fluid
syringe
main body
plunger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2017/021355
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English (en)
Japanese (ja)
Inventor
小林　研一
修治 安部
玄洋 翠川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kowa Co Ltd
Original Assignee
Kowa Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kowa Co Ltd filed Critical Kowa Co Ltd
Priority to JP2018521780A priority Critical patent/JPWO2017213231A1/ja
Publication of WO2017213231A1 publication Critical patent/WO2017213231A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses or corneal implants; Artificial eyes
    • A61F2/16—Intraocular lenses

Definitions

  • the present invention relates to an intraocular lens pushing aid.
  • Intraocular lenses that are inserted as a substitute for the crystalline lens in order to correct the refraction by replacing the human turbid crystalline lens in the treatment of cataract are in practical use.
  • intraocular lens insertion surgery in the treatment of cataracts, for example, a few millimeters of incision wound (incision) is provided at the edge of the cornea, cornea, etc., and the lens is crushed by ultrasonic phacoemulsification, etc. After removal, the intraocular lens is inserted and secured by an intraocular lens insertion instrument.
  • techniques for assisting insertion of an intraocular lens into the eye using an intraocular lens insertion device have been proposed (for example, Patent Documents 1, 2, and 3).
  • JP 2004-261263 A Special table 2012-505066 gazette International Publication No. 2008/149927
  • the intraocular lens housed in the intraocular lens housing portion of the instrument body is pressed by the plunger to move within the instrument body and enter the eye from the instrument body. Released.
  • the plunger is moved to the intraocular lens at the moment when the intraocular lens is released from the distal end of the insertion instrument to the outside.
  • the resistance received from the power drops momentarily.
  • the surgeon needs to adjust the force pushing the plunger according to the movement state of the intraocular lens.
  • the technology disclosed herein has been made in view of the above circumstances, and an object thereof is to provide an intraocular lens extrusion assisting tool that improves the operability of the intraocular lens insertion device.
  • An intraocular lens push-out assisting tool of the present disclosure is provided with a substantially cylindrical instrument body having an insertion tube portion at the tip for inserting an intraocular lens into the eye, and a slideable inside the instrument body.
  • An intraocular lens pushing aid that can be connected to an intraocular lens insertion device having an intraocular lens pushing member that pushes and moves into the insertion tube and pushes it into the eye, and a body part that is a tubular member;
  • a collar provided at one end of the main body and having a connection mechanism for connecting to an intraocular lens insertion instrument; and a connection provided at the other end of the main body and connectable to a fluid supply means for supplying fluid into the main body.
  • the moving member is provided in the main body and moves with the pressure of the supplied fluid, and has at least one hole provided on a side surface of the main body and through which the fluid passes.
  • the operator can control the movement of the moving member pushed by the fluid, and thus the movement of the intraocular lens pushing member pushed by the moving member, by adjusting the amount of the fluid supplied to the main body part with a finger or the like.
  • the intraocular lens pushing member can be moved more stably.
  • an index indicating the position of the intraocular lens pushing member may be provided on the side surface of the main body when the buttock is connected to the intraocular lens insertion device.
  • the hole may be configured to be closed in advance by a sealing member that can be opened by an external force.
  • the sealing member may be a tape.
  • an intraocular lens pushing aid that improves the operability of the intraocular lens insertion device.
  • FIG. 2A and FIG. 2B are diagrams illustrating schematic configurations of an intraocular lens insertion device and a syringe according to an embodiment.
  • FIG. 3A and FIG. 3B are diagrams showing a schematic configuration of an intraocular lens in one embodiment. It is a figure which shows schematic structure of the nozzle main body in one Embodiment.
  • Fig.5 (a) and FIG.5 (b) are figures which show schematic structure of the positioning member in one Embodiment.
  • FIG. 6A and FIG. 6B are diagrams showing a schematic configuration of a plunger in one embodiment.
  • FIG. 7B are diagrams illustrating an intraocular lens insertion device and a syringe according to an embodiment. It is a figure which shows schematic structure of the injection cylinder which has a syringe in one Embodiment.
  • FIG. 9A and FIG. 9B are diagrams showing a schematic configuration of an intraocular lens insertion device and a syringe in one modified example. It is a figure which shows schematic structure of the intraocular lens insertion instrument and syringe in one modification.
  • FIG. 1 shows a syringe 20 used as an intraocular lens pushing aid according to the present embodiment.
  • the syringe 20 has a cylindrical tubular member 20a.
  • the cylindrical member 20a corresponds to an example of the main body.
  • the cylindrical member 20a is provided with a packing 20c as a moving member so as to come into contact with the inner wall of the cylindrical member 20a. It is desirable that the packing 20c has a rigidity that does not bend when sliding.
  • a fluid supply unit 20 d is provided as a fluid supply unit for supplying fluid to a space surrounded by the syringe 20 and the packing 20 c.
  • the fluid supply unit 20d has a substantially conical shape and has an opening 20e that is a through hole through which a fluid passes.
  • the shape of the syringe 20 is not limited to a cylinder, and can be formed in an arbitrary shape.
  • a flange 20 h is provided on the other end side of the syringe 20.
  • a pair of through holes 20i are provided in the flange 20h so as to face each other with the opening 20r interposed therebetween.
  • the flange 20h corresponds to an example of a flange portion.
  • the holding portion 11 of the nozzle body 10 of the intraocular lens insertion device 1 is inserted through the through hole 20i.
  • the intraocular lens insertion device 1, the nozzle body 10, and the hold unit 11 will be described later.
  • Three through holes 20j, 20k, and 20m that penetrate the syringe 20 are provided on the side surface of the syringe 20.
  • the number of through holes is not limited to three.
  • the through holes 20j, 20k, and 20m are closed with transparent tapes 20n, 20p, and 20q, respectively.
  • the tapes 20n, 20p, and 20q correspond to an example of a sealing member that can be opened by an external force.
  • FIG. 2 shows a schematic configuration of the intraocular lens insertion device 1 and the syringe 20 of the present embodiment.
  • 2A is a plan view of the intraocular lens insertion device 1 and the syringe 20 when the stage lid portion 13 is opened
  • FIG. 2B is an intraocular lens insertion device when the stage lid portion 13 is closed. 1 and a side view of the syringe 20 are shown.
  • the intraocular lens insertion instrument 1 includes a nozzle body 10 as an instrument body, a plunger 30 as an intraocular lens push-out member, a stage unit 12 and a stage lid unit 13 as an intraocular lens storage unit.
  • the syringe 20 is attached to the nozzle body 10 and functions as an intraocular lens pushing aid that assists in pushing out the intraocular lens.
  • the nozzle main body 10 of the intraocular lens insertion device 1 is formed in a cylindrical shape having a substantially rectangular cross section, and one end of the nozzle body 10 is greatly open (hereinafter, the side having the large opening is referred to as the rear end 10b), and the other side.
  • tip part 10a narrowed down are provided in the edge part. As shown in FIG. 2 (b), the tip 10a is opened obliquely.
  • the plunger 30 is inserted into the nozzle body 10 and can reciprocate.
  • the direction from the rear end portion 10b of the nozzle body 10 to the front end portion 10a is the front direction
  • the opposite direction is the rear direction
  • the front side of the page in FIG. 2 (a) is the upper direction
  • the reverse direction is the lower direction
  • the front side of the page is the left direction
  • the opposite direction is the right direction.
  • 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.
  • 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 is configured such that the upper side of the nozzle body 10 is opened by opening the stage lid portion 13.
  • a positioning member 50 is attached to the stage portion 12 from the lower side of the nozzle body 10. By this positioning member 50, the intraocular lens 2 is stably held in the stage portion 12 even before use (during transportation).
  • the intraocular lens 2 is placed on the stage unit 12 and the front side of the optical axis is on the upper side with the stage lid 13 opened and the positioning member 50 attached to the stage unit 12 at the time of manufacture. Set to be. Then, after the stage lid 13 is closed, it is shipped and sold. The surgeon inserts the hold part 11 of the nozzle body 10 into the through hole 20 i of the syringe 20 and engages the syringe 20 and the hold part 11. As shown in FIG. 2B, in this embodiment, since the holding portion 11 of the nozzle body 10 extends in the up-down direction, the flange 20h is formed in the up-down direction in the syringe 20 that is received by the nozzle body 10. A pair is provided.
  • the operator removes the positioning member 50 with the stage lid portion 13 closed, and then moves the packing 20c using the fluid supplied to the syringe 20, and the plunger 30 moves the plunger 30 of the nozzle body 10 by the packing 20c. It is moved to the tip side.
  • the intraocular lens 2 is pressed by the plunger 30, and the intraocular lens 2 is moved to the nozzle portion 15 and then released from the distal end portion 10 a into the eyeball.
  • the nozzle main body 10, the plunger 30, and the positioning member 50 in the intraocular lens insertion device 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.
  • the intraocular lens insertion device 1 is a preset type in which the intraocular lens 2 is set in advance in the intraocular lens insertion device 1 before shipment. May be a so-called separate type that is set in the intraocular lens insertion device 1.
  • a region surrounded by the cylindrical member 20a, the packing 20c, and the fluid supply unit 20d is a sealed space.
  • the region on the fluid supply unit 20d side is defined as the first region 20f with the packing 20c as a boundary, and the plunger 30 side region inserted into the nozzle body 10 Is the second region 20g.
  • notches 11 a are provided at both ends of the hold unit 11. For this reason, once the flange 20h of the syringe 20 is attached to the hold part 11, the engagement between the flange 20h and the hold part 11 is not released by the notch 11a. Note that the notch 11a may be provided in the flange 20h instead of the hold portion 11 or in addition to the hold portion 11 as long as the engagement between the flange 20h and the hold portion 11 is not released.
  • the syringe 20 is attached to the nozzle body 10 it is necessary to provide at least one opening structure at a connection portion between the syringe 20 and the nozzle body 10 so that the second region 20 g does not become a sealed space. This is because the air existing in the second region 20g before the attachment of the syringe 20 and the nozzle body 10 needs to be discharged to the outside as the packing 20c moves.
  • the fluid supply part 20d has a front side connected to the rear end of the cylindrical member 20a and a rear side connectable to the tip of the tube 40.
  • the fluid supply unit 20d corresponds to an example of a fluid supply unit.
  • the opening 20e is dimensioned to be engageable with an inner diameter or an outer diameter of a general medical tube.
  • a highly versatile medical tube can be connected to the fluid supply unit 20d, and it is not necessary to prepare a special tube.
  • a fluid supply source (not shown) for supplying fluid into the first region 20f is connected to the other end of the tube 40 connected to the fluid supply unit 20d. Examples of the fluid supply source include a compressor for supplying compressed air and a pump for supplying cold / hot water.
  • FIG. 3 is a diagram showing a schematic configuration of the intraocular lens 2 according to the present embodiment.
  • 3A is a plan view and FIG. 3B is a side view. Note that the orientation of the intraocular lens 2 does not correspond between FIGS. 3 (a) and 3 (b).
  • the intraocular lens 2 is a so-called one-piece type in which the lens portion and the support portion are integrally formed of the same material, and the material of the lens is a soft acrylic material.
  • 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.
  • the lens body 2a and the support portion 2b are connected to each other via a joint portion 2d.
  • the intraocular lens 2 in this embodiment demonstrates as a one-piece type, the three-piece type in which the lens main body and the support part are formed with the separate member may be sufficient.
  • one of the two support portions 2b is on the rear side of the lens body 2a, and the other support portion 2b is on the front side of the lens body 2a.
  • the intraocular lens 2 is set on the stage unit 12 so as to be disposed.
  • positioned at the front side of the lens main body 2a be a front support part
  • positioned at the rear side of the lens main body 2a be a back support part.
  • the support portion 2b is subjected to a textured process.
  • the posture of the intraocular lens 2 can be stabilized.
  • an appropriate frictional force is generated between the support portion 2 b and the inner wall surface of the nozzle body 10, whereby the intraocular lens 2 is moved to the nozzle. It can be prevented from rotating in the main body 10.
  • the support portion 2b 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.
  • FIG. 4 shows a plan view of 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 is released from the distal end portion 10a.
  • 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 in the nozzle body 10.
  • the intraocular lens 2 is released, the intraocular lens 2 is deformed and folded according to a change in the cross-sectional shape of the through hole 10c in the nozzle body 10, and is formed on the patient's eyeball. It is released after being transformed into a shape that is easy to enter an incision.
  • the tip portion 10a has a shape cut obliquely so that the upper region of the nozzle portion 15 is in front of the lower region.
  • 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 and 2 b extending on both sides of the intraocular lens 2.
  • a set surface 12b 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 portion 12 and the stage lid portion 13 are integrally formed.
  • 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.
  • stage lid portion 13 ribs 13 a and 13 b are provided on the surface facing the set surface 12 b when the lid is closed in order to reinforce the stage lid portion 13 and stabilize the position of the intraocular lens 2. Further, a guide protrusion 13 c is provided as a guide on the upper side of the plunger 30.
  • the stage lid 13 is provided with an injection hole 16 for injecting a viscoelastic substance such as hyaluronic acid for smooth movement of the intraocular lens in the nozzle.
  • the protrusion 17 has a function of making it easier to inject the viscoelastic material by guiding the needle of the syringe to be injected into the injection hole 16.
  • FIG. 5 shows a schematic configuration of the positioning member 50.
  • FIG. 5A shows a plan view of the positioning member 50
  • 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.
  • a pair of second mounting portions 56 and 56 projecting 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.
  • 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.
  • a third placement portion 58 on which a part of the front support portion of the support portion 2b of the intraocular lens 2 is placed is formed inside the side wall portions 51 and 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.
  • 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.
  • the heights of the upper surfaces of the fourth placement unit 60 and the fourth positioning unit 61 are higher than the heights of the upper surfaces of the first to third placement units and the first to third positioning units. Is also provided to be low.
  • a rotation preventing wall portion 62 for preventing unnecessary rotation when the positioning member 50 is removed is provided.
  • 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.
  • the bottom surface of the outer periphery 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 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.
  • 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.
  • 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.
  • the distal end portion 10a of the nozzle portion 15 of the nozzle body 10 is inserted into the incision provided in the eye tissue.
  • the distal end portion 10a has an oblique opening shape, it can be easily inserted into the incision.
  • the fluid is supplied to the syringe 20, and the pressing plate portion 33 of the plunger 30 moves toward the distal end side of the nozzle body 10 as the packing 20 c is moved by the fluid. Pushed in.
  • 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 notch 31 c is formed at the tip of the action part 31.
  • the notch 31c is formed in a groove shape that opens upward in the action portion 31 and penetrates in the left-right direction.
  • the groove wall on the distal end side of the cutout portion 31 c is formed with an inclined surface that goes upward as it goes to the distal end side of the action portion 31.
  • 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.
  • 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 upward from the insertion portion 32 and that can move 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.
  • 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.
  • the plunger 30 Prior to the accommodation of the intraocular lens 2 of the intraocular lens insertion device 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 part 54 and the 2nd mounting part 56 of the positioning member 50 are hold
  • the lens body 2 a of the intraocular lens 2 is placed and positioned on the upper surfaces of the first placement part 54 and the second placement part 56 with the support part 2 b facing the front-rear direction of the nozzle body 10.
  • a part of the support portion 2b on the rear side of the intraocular lens 2 is sandwiched between the notches 31c of the plunger 30 and is supported by the bottom surface thereof.
  • FIG. 7 illustrates the relative positional relationship between the plunger 30, the packing 20 c of the syringe 20, and the through holes 20 j, 20 k, and 20 m when the intraocular lens 2 moves to the tip portion 10 a of the nozzle body 10.
  • the operator peels off the tape 20q (see FIG. 8) covering the through hole 20m.
  • the operator operates the fluid supply source connected to the tube 40 to supply a constant flow rate of fluid to the tube. 40 and the fluid supply part 20d to supply to the first region 20f.
  • the packing 20c moves toward the nozzle body 10 and presses the plunger 30 toward the nozzle body 10 to move it. Thereby, the intraocular lens 2 can be moved to the tip portion 10 a side of the nozzle body 10.
  • the function of the through hole 20m will be described. As shown in FIG. 7B, when the packing 20c moves beyond the through hole 20m, the fluid supplied to the first region 20f flows out from the through hole 20m.
  • the operator operates the fluid supply source after closing the through hole 20m with the hand of the operator.
  • the operator blocks the through hole 20m with a finger or the like, so that the fluid penetrates. It does not flow out of the cylindrical member 20a from the hole 20m.
  • the packing 20c is pushed by the fluid and moves further from the position illustrated in FIG. 7B to the tip portion 10a side of the nozzle body.
  • the plunger 30 is pressed and moved by the packing 20c, and further moves the intraocular lens 2 to the tip portion 10a side of the nozzle body 10.
  • the operator When the packing 20c moves further from the position illustrated in FIG. 7B to the tip 10a side of the nozzle body, the operator temporarily removes the finger from the through hole 20m, thereby temporarily supplying the fluid to the through hole 20m. And the movement of the packing 20c can be stopped. Therefore, the operator can control the movement of the packing 20c pushed by the fluid by closing the through hole 20m with a finger or the like, or separating the finger or the like that has closed the through hole 20m from the through hole 20m. . Thereby, the operator does not need to push the plunger 30 directly with a finger, and can concentrate on other operations and treatments such as adjustment of the position of the nozzle body 10 with respect to the incision.
  • the through hole 20m may not be blocked by the surgeon's hand.
  • the fluid even if the fluid is supplied to the first region 20f after the packing 20c has moved to the position illustrated in FIG. 7B, the fluid flows out of the cylindrical member 20a from the through hole 20m.
  • the packing 20c stops at the position shown in FIG. 7B without being pushed by the fluid.
  • the phenomenon that the packing 20c continues to push the plunger 30 toward the tip portion 10a of the nozzle body 10 is avoided.
  • Can do As a result, it is possible to prevent the intraocular lens 2 from being released from the distal end portion 10a of the nozzle body 10 against the operator's intention.
  • the positions of the through holes 20j, 20k, and 20m in the syringe 20 are determined based on the length of the plunger 30 of the intraocular lens insertion device 1 that is assumed to be connected to the syringe 20. Specifically, before the intraocular lens 2 is released from the tip portion 10a of the nozzle body 10 by the plunger 30, the movement of the packing 20c may be stopped using any of the through holes 20j, 20k, and 20m. The positions of the through holes 20j, 20k, and 20m are determined so that they can be performed.
  • intraocular lens insertion instruments A, B, and C can be connected to the syringe 20.
  • the length of the plunger extending from the rear end portion (10b in FIGS. 2 and 7) of the nozzle body of the intraocular lens insertion devices A, B, and C is assumed that the intraocular lens insertion devices A, B, and C are long in this order.
  • the movement of the packing 20c is stopped using the through hole 20m
  • the intraocular lens insertion instrument B is connected to the syringe 20
  • the movement of the packing 20c is considered to be stopped using the through hole 20j.
  • the plungers of the insertion devices A, B, and C are moved, the through-hole 20j in the syringe 20 can be stopped so that the movement of the packing 20c can be stopped before the intraocular lens 2 is released from the distal end portion 10a of the nozzle body 10.
  • 20k, and 20m may be determined.
  • the diameter of the through holes 20j, 20k, and 20m is a circle having a diameter of 1 mm or more and 3 mm or less, the fluid supplied to the syringe 20 is sufficient to escape from the through holes 20j, 20k, and 20m.
  • the through holes 20j, 20k, and 20m can be sufficiently blocked by pressing with an operator's finger or the like.
  • the shape of the hole is not limited to a circle.
  • FIG. 8 shows an example in which the syringe 20 is used as a part of the syringe barrel 1000.
  • the syringe 20 is connected to the packing 20 c of the syringe 20 by the tip of the plunger 70 as the push-out member of the syringe barrel 1000, so that the syringe 20 can assist in pushing the intraocular lens of the intraocular lens insertion device 1.
  • it Before being used as a tool, it functions as a syringe of a general syringe cylinder 1000.
  • FIG. 9 shows a schematic configuration of a syringe 200 according to a modification.
  • protrusions 200n, 200p, and 200q that close the through holes 20j, 20k, and 20m are provided instead of the tapes 20n, 20p, and 20q of the syringe 20 described above.
  • the protrusions 200n, 200p, and 200q correspond to an example of a sealing member that can be opened by an external force.
  • the protrusions 200n, 200p, and 200q are configured so as to be crushed and open when a predetermined external force is applied by an operator's finger or the like of the intraocular lens insertion device 1.
  • the operator uses the through holes 20j, 20k, and 20m by opening the holes by crushing the protrusions 200n, 200p, and 200q in the same manner as described above.
  • the movement of the plunger can be adjusted.
  • the plug 200w that can be opened and closed for allowing the fluid supplied to the first region 20f of the syringe 200 to escape from the syringe 200 to the fluid supply unit 20d side or the fluid supply unit 20d from the packing 20c.
  • the stopper 200w is opened and closed by the operator. Further, before the fluid is supplied to the syringe 200, the stopper 200w is opened. Therefore, for example, even if the fluid supply amount suddenly increases abnormally immediately after the fluid supply to the syringe 200 is started, the fluid flows out from the stopper 200w, so that the fluid flows into the packing 20c and eventually the packing 20c. The moving speed of the pushed plunger 30 can be relaxed.
  • the stopper 200w can be used as a safety device for preventing the moving speed of the packing 20c from becoming abnormal when supplying fluid.
  • FIG. 10 shows a schematic configuration of a syringe 300 according to a modification.
  • an index indicating the position of the pressing plate portion 33 of the plunger 30 when the syringe 300 is attached to the intraocular lens insertion device 1 is provided on the side surface of the syringe 300.
  • an index “A” 300 a indicating the position of the pressing plate portion 33 and an index line 300 b are provided on the side surface of the syringe 300.
  • the length of the plunger of the intraocular lens insertion device varies depending on the manufacturer.
  • a manufacturer or a symbol indicating a model number of the intraocular lens insertion device 1 may be used.
  • an index “B” 300c and an index line 300d similar to the index “A” 300a and the index line 300b are provided on the side surface of the syringe 300.
  • the index “B” 300d is an index that indicates the position of the pressing plate portion of the plunger when the syringe 300 is attached to another intraocular lens insertion device having a different plunger length from the intraocular lens insertion device 1. .
  • the position of the pressing plate portion of the plunger can be grasped based on the index and the index line. As a result, the operator can easily determine which of the through holes 20j, 20k, and 20m is used to easily adjust the packing 20c and the movement of the plunger.
  • Intraocular lens insertion instrument 2 Intraocular lens 10 Nozzle main body 20,200,300 Syringe 20a Cylindrical member 20j, 20k, 20m Through-hole 20n, 20p, 20q Tape 200n, 200p, 200q Protrusion 200w Plug 30 Plunger 33 Pressing plate Part 300a, 300c indicator 300b, 300d indicator line

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

L'invention concerne un outil auxiliaire de poussée de lentille intraoculaire vers l'extérieur permettant d'améliorer la facilité de mise en œuvre d'un outil d'insertion de lentille intraoculaire. L'outil auxiliaire (20) de poussée de lentille intraoculaire vers l'extérieur peut être relié à un outil d'insertion de lentille intraoculaire comprenant : un corps d'outil sensiblement tubulaire ayant à une extrémité de pointe de celui-ci une partie tube d'insertion permettant d'insérer une lentille intraoculaire dans l'œil ; et un élément de poussée de lentille intraoculaire vers l'extérieur disposé coulissant dans le corps d'outil pour appuyer sur la lentille intraoculaire à déplacer vers la partie tube d'insertion et la pousser vers l'extérieur à l'intérieur de l'œil. L'outil auxiliaire (20) de poussée de lentille intraoculaire vers l'extérieur comprend : une partie corps (20a) qui est un élément tubulaire ; une partie rebord (20h) disposée sur une extrémité de la partie corps (20a) et comprenant un mécanisme de liaison qui peut être relié à l'outil d'insertion de lentille intraoculaire ; une partie de liaison (20d) disposée sur l'autre extrémité de la partie corps (20a), et pouvant être reliée à un moyen d'alimentation en fluide qui fournit un fluide dans la partie corps (20a) ; un élément mobile (20c) qui est disposé dans la partie corps (20a) et qui est déplacé par une pression du fluide fourni ; et au moins un trou (20j, 20k, 20m) ménagé dans une surface latérale de la partie corps (20a) et à travers lequel passe le fluide.
PCT/JP2017/021355 2016-06-09 2017-06-08 Outil auxiliaire de poussée de lentille intraoculaire vers l'extérieur Ceased WO2017213231A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018521780A JPWO2017213231A1 (ja) 2016-06-09 2017-06-08 眼内レンズ押出補助具

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016115401 2016-06-09
JP2016-115401 2016-06-09

Publications (1)

Publication Number Publication Date
WO2017213231A1 true WO2017213231A1 (fr) 2017-12-14

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JP (1) JPWO2017213231A1 (fr)
WO (1) WO2017213231A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025206268A1 (fr) * 2024-03-29 2025-10-02 興和株式会社 Instrument d'insertion de lentille intraoculaire

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004261263A (ja) * 2003-02-28 2004-09-24 Nidek Co Ltd 眼内レンズ挿入器具
US20090018548A1 (en) * 2007-07-13 2009-01-15 Charles Steven T Pneumatically-Powered Intraocular Lens Injection Device with Removable Cartridge
US20090018512A1 (en) * 2007-07-13 2009-01-15 Charles Steven T Pneumatically-Powered Ophthalmic Injector
WO2015144890A1 (fr) * 2014-03-28 2015-10-01 Physiol Système de commande d'injecteur de lentille intraoculaire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004261263A (ja) * 2003-02-28 2004-09-24 Nidek Co Ltd 眼内レンズ挿入器具
US20090018548A1 (en) * 2007-07-13 2009-01-15 Charles Steven T Pneumatically-Powered Intraocular Lens Injection Device with Removable Cartridge
US20090018512A1 (en) * 2007-07-13 2009-01-15 Charles Steven T Pneumatically-Powered Ophthalmic Injector
WO2015144890A1 (fr) * 2014-03-28 2015-10-01 Physiol Système de commande d'injecteur de lentille intraoculaire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025206268A1 (fr) * 2024-03-29 2025-10-02 興和株式会社 Instrument d'insertion de lentille intraoculaire

Also Published As

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