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WO2015168009A1 - Appareil d'injection de lentille intraoculaire - Google Patents

Appareil d'injection de lentille intraoculaire Download PDF

Info

Publication number
WO2015168009A1
WO2015168009A1 PCT/US2015/027775 US2015027775W WO2015168009A1 WO 2015168009 A1 WO2015168009 A1 WO 2015168009A1 US 2015027775 W US2015027775 W US 2015027775W WO 2015168009 A1 WO2015168009 A1 WO 2015168009A1
Authority
WO
WIPO (PCT)
Prior art keywords
plunger
injector
housing
distal end
control
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/US2015/027775
Other languages
English (en)
Inventor
Ravi Nallakrishnan
Takayuki Akahoshi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2015168009A1 publication Critical patent/WO2015168009A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • A61F2/1662—Instruments for inserting intraocular lenses into the eye
    • A61F2/167—Instruments for inserting intraocular lenses into the eye with pushable plungers

Definitions

  • the present invention relates to an apparatus or injector that is used to inject an intraocular lens (hereinafter lOL") into an eye of a patient.
  • lOL intraocular lens
  • An injector generaiiy of this type is shown in U.S. Patent No. 8,685,088 B2, the disclosure of which is hereby incorporated by reference.
  • a typical !OL injector has a housing into which an lOL is placed.
  • the lOL is typically folded or otherwise placed in a compressed state within the housing.
  • the injector housing is elongate and has a proximal end and a distal end. The distal end of the housing is located c!osest to a patient's eye.
  • a plunger is retained within the housing and is movable with respect to the housing. Movement of the plunger through the housing is generally characterized as linear, along an axis defined by the housing.
  • the plunger has a proximal end with a thumb plate or finger contacting member which may be pressed during use when the plunger is pushed forward toward the distal end of the housing.
  • the housing has a gripping member or finger plate that enables the user of the injector to grip the injector, counterbalancing the force applied to the plunger finger contact member.
  • the lOL In operation of the injector, the lOL is pressed forward by a distal end of the plunger for insertion into a patient's eye.
  • the !OL may further be compressed by a narrowed tip or nozzle that may be attached to the housing distal end, which enables the iOL to travel through a variety of incision sizes in the eye while the IOL is in the compressed state.
  • the iOL will expand to an uncompressed state upon entering the eye and exiting the nozzle. Such a rapid expansion can lead to a release of potential energy and cause undesirable recoil or push back to the injector plunger and/or housing.
  • This unfolding of the IOL has heretofore tended to cause the plunger to undesirably push back, giving the user a feedback sensation of unwanted motion to the particular physician inserting the IOL info the patient's eye.
  • Such motion can conceivably cause damage to the patient's eye in the form of rupture to the capsule or even damage to the IOL itself.
  • a user of typical injector may therefore fend to over-force or under-force the plunger in anticipation or surprise in response to this release of energy.
  • an IOL injector It would be desirable for an IOL injector to provide improved feedback to the user. It would further be desirable for an IOL injector to reduce or minimize over and under-forcing of the IOL It would further be desirable for such an injector to be cheap to manufacture and easy to assemble, and configured for disassembly to be sanitized for reusability.
  • an injector fo injecting an intraocular lens into an eye.
  • the injector has a hollow housing configured to house an intraocular lens, and has a length that defines a housing axis.
  • the housing has an interior surface located radially outward from the housing axis.
  • the injector has a plunge movable relative to the housing generally along the housing axis.
  • the piunger has a distal end and a proximal end. The plunger proximal end is for being forced by a user of the injector to move the plunger and the plunger distal end is for moving an intraocular lens generally along the housing axis.
  • the piunger has an exterior surface.
  • the injector further has at least one control member located between the housing interior surface and the plunger exterior surface, which is configured to control at least one of: (a) a velocity of the plunger distal end; and (b) an acceleration of the plunger distal end.
  • FIG. 1 is a perspective view of a first embodiment of an injector according to the present invention
  • FIG. 2 is a perspective view of the injector illustrated in FIG. 1 , except FIG.
  • FIG. 3 is an exploded view .of the injector illustrated in FIG. 1 ;
  • FIG. 4 is a partial perspective view of the plunger distal of the injector illustrated in FIG, 1 ;
  • FIG. 5 is an exploded view of a second embodiment of an injector according to the present invention.
  • FIG. 6 is a partial, cross-sectional view of the injector illustrated in FIG. 5.
  • FIGS. 1-4 A first embodiment of an iOL injector in accordance with the present invention is illustrated in FIGS. 1-4 and is generally referred to by numeral 20.
  • the injector 20 has a hollow housing 30 with an interior surface 32 that is configured to contain an IOL or cartridge containing an IOL (not iliustrated).
  • the housing 30 is elongate, having distal end 34, a proximal end 38, and a length therebetween defining a housing axis.
  • the housing has an aperture 38 at a distal end 34 for receiving a cartridge containing an IOL (not illustrated).
  • the housing aperture 38 has at least one locking feature for retaining the IOL cartridge during the operation of injector 20.
  • the housing proximai end 36 has a finger plate 40 for providing a gripping surface for the user of the injector 20, which will be discussed in detail below.
  • the finger plate 40 has the form of a partial disc, although it will be appreciated that the finger plate 40 may have other forms such as a square, or other polygon, an indentation, or irregular protrusion extending from the housing 30.
  • the housing is preferably molded from a polycarbonate plastic.
  • the first illustrated embodiment of the injector 20 has a plunger, which may be unitary or comprised of multiple components, and which is inserted into the housing 30 and is movable relative to the housing 30 generally along the housing axis 100.
  • the plunger is elongate and has a proximal end 50 and a distai end 52.
  • the plunger has a slot or guide 51 (as best seen in FIG. 4) for cooperating with a slot or guide (not visible) inside of the housing 30 to prevent relative rotation of the plunger with respect to the housing 30.
  • the proximal end 50 of the plunger is adapted to be forced by a thumb of the user of the injector 20, counterbalancing the force of the user's fingers against the housing finger plate 40.
  • the balanced forces result in movement of the operative, distal end 52 of the plunger, which is configured to move the 101 from a location within the housing 30 to a location outside of the housing 30, aiong the axis.
  • the proximal end 50 of the plunger has a thumb plate 54 secured to the plunger proximal end 52 by an attachment means, such as a press fit, adhesive, weld, or screw 55.
  • a gripping ring 58 is attached to the thumb plate 54 for retaining a user's thumb against the proximal end 52 of the plunger.
  • An end cap 44 is threadably secured, or otherwise removably secured, to the housing proximal end 36 for retaining the plunger proximal end 50 within the housing 30.
  • the plunger may be unitary or may be comprised of several components.
  • the distal end 52 is preferably a slender metallic shaft that is attached to a rigid plastic body, preferably Nylon 6, 50% glass filled, of the plunger proximal end 50. It will be appreciated that the plunger may be unitari!y molded or formed of a unitary metallic part.
  • the metallic shaft has a flaring distal end.
  • the plunger components may be press-fit, threaded, adhered, or welded together, or any other means of attachment.
  • the plunger distal end 52 has a reduced thickness compared to the plunger proximal end 50, for allowing the plunger distal end 52 to push the lOL through a narrowed nozzle (not illustrated) during injection of the lOL into the eye.
  • the thickened proximal end 50 of the plunger has one or more, and preferably two, annular recesses or grooves for retaining a plurality of control members 70 made of silicone rubber (the operation of which wiil be discussed in detail below).
  • the injector has a compression spring 60 for biasing the plunger to a first, unactuated position where the plunger proximal end 50 extends a furthest distance from the housing proximal end 36, and the plunger distal end 52 remains within the housing 30.
  • the spring 80 provides linear resistance against the force applied to the plunger as it moves along the housing axis toward the distal end 34 of the housing and the stored lO ' L When compressed, the plunger moves to a second, actuated position where the plunger distal end 52 extends from the housing 30.
  • the injector 20 further has at least one, and preferably a plurality of control members 70 for controlling the velocity of the plunger distal end 52 and/or the acceleration of the plunger distal end 52.
  • the injector 20 has two control members 70 in the form of resilient G-rings carried in the recesses 52 of the plunger proximal end 50. It will be understood that the control members 70 may alternatively be carried in one or more recesses in the housing 30; and further that the control members 70 need not be O-rings.
  • the control members 70 may be resilient, elastic sleeves, beads, or elongate protrusions that resist movement of the plunger relative to the housing 30.
  • the two O-rings are located proximal a connection point between the metallic plunger distal end 52 and the plastic proximal end 50 of the plunger.
  • the control members 70 of the injector 20 serve to limit the forcing capability of the user of the injector 20, thus reducing the risk of over-riding and under-riding of the IOL insertion.
  • the injector 20 By limiting the velocity and/or the acceleration of the plunger distal end 52, the injector 20 disclosed herein may increase patient safety and operation reliability and consistency. As the plunger distal end 52 contacts the IOL, which may travel along a narrow passage or nozzle, and the IOL is released into the eye, a recoiling force or rocketing force may tend to suddenly push the plunger proximal end 50 back toward the user. The control members 70 may limit such recoil of the plunger upon unfolding of the SOL at the surgical site.
  • FIGS. 5-6 illustrate a second embodiment of an injector 20A according to the present invention.
  • the second embodiment of the injector 20A functions in the same manner as the first embodiment of the injector 20 discussed above.
  • the second embodiment 20A separates the control members 70A, in the form of two O-rings, along a greater distance on the plunger proximal portion 50A, for providing increased stability and control of the plunger as it moves through housing 20A.
  • the second embodiment of the injector 20A has a seal member 90A located between the proximal end 50A of the plunger and the housing 30A for sealing between a plunger exterior surface and the housing inner surface 32A.
  • Housing 30A has a finger recess 31 A for allowing the user to grip the housing 30A, as an alternative to the finger plate 40 in the first embodiment.
  • End cap 44A has a pin for engaging a slot in the proximal end of the housing 30A for allowing removal of the plunger from the housing 30A.
  • Another feature of the plunger of the injector 20A is that it is further separated into a multitude of elongate components. Distal end 52A of the plunger is secured within a proximal sleeve 84A and proximal end 50A of the plunger by a set screw 88A. A plunger proximal rod 80A is press fit into an aperture of the proximal sleeve 84A.
  • the modular construction of the plunger in the second embodiment of the irjecfor 20A allows for complete disassembly and sanitization/replacement of specific plunger components for re-use of the injector 20A.

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 injecteur pour injecter une lentille intraoculaire dans un œil. L'injecteur comporte un boîtier creux pour recevoir une lentille intraoculaire, et une longueur définissant un axe de boîtier. Le boîtier comprend une surface intérieure située radialement vers l'extérieur de l'axe de boîtier. L'injecteur comporte un piston mobile par rapport au boîtier généralement le long de l'axe de boîtier. Le piston comprend une extrémité distale pour déplacer une lentille intraoculaire généralement le long de l'axe de boîtier, et comprend en outre une extrémité proximale à forcer par un utilisateur de l'injecteur. La piston comprend en outre une surface extérieure. L'injecteur comporte au moins un élément de commande situé entre la surface intérieure de boîtier et la surface extérieure de piston, et configuré pour commander au moins une parmi : (a) une vitesse de l'extrémité distale de piston ; et (b) une accélération de l'extrémité distale de piston.
PCT/US2015/027775 2014-04-27 2015-04-27 Appareil d'injection de lentille intraoculaire Ceased WO2015168009A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201461984845P 2014-04-27 2014-04-27
US61/984,845 2014-04-27

Publications (1)

Publication Number Publication Date
WO2015168009A1 true WO2015168009A1 (fr) 2015-11-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2015/027775 Ceased WO2015168009A1 (fr) 2014-04-27 2015-04-27 Appareil d'injection de lentille intraoculaire

Country Status (1)

Country Link
WO (1) WO2015168009A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019142067A3 (fr) * 2018-01-19 2019-08-29 Johnson & Johnson Surgical Vision, Inc. Système d'insertion d'une lentille intraoculaire

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4919130A (en) * 1986-11-07 1990-04-24 Nestle S.A. Tool for inserting compressible intraocular lenses into the eye and method
US20010020171A1 (en) * 1998-05-19 2001-09-06 Thomas M. Heyman Device for inserting a flexible intraocular lens
US20040059343A1 (en) * 2002-09-25 2004-03-25 Kevin Shearer Novel enhanced system for intraocular lens insertion
US20060235429A1 (en) * 2005-04-15 2006-10-19 Lee Ngee J Multi-action device for inserting an intraocular lens into an eye
WO2007098622A1 (fr) * 2006-02-28 2007-09-07 Sdi Surgical Device International Gmbh Injecteur de polarisation à ressort pour lentille intraoculaire
US20080058830A1 (en) * 2005-02-11 2008-03-06 Advanced Medical Optics, Inc. Rapid exchange iol insertion apparatus and methods of using
US20130060257A1 (en) * 2011-09-07 2013-03-07 Sdi Surgical Device International Gmbh Modular intraocular lens injector

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4919130A (en) * 1986-11-07 1990-04-24 Nestle S.A. Tool for inserting compressible intraocular lenses into the eye and method
US20010020171A1 (en) * 1998-05-19 2001-09-06 Thomas M. Heyman Device for inserting a flexible intraocular lens
US20040059343A1 (en) * 2002-09-25 2004-03-25 Kevin Shearer Novel enhanced system for intraocular lens insertion
US20080058830A1 (en) * 2005-02-11 2008-03-06 Advanced Medical Optics, Inc. Rapid exchange iol insertion apparatus and methods of using
US20060235429A1 (en) * 2005-04-15 2006-10-19 Lee Ngee J Multi-action device for inserting an intraocular lens into an eye
WO2007098622A1 (fr) * 2006-02-28 2007-09-07 Sdi Surgical Device International Gmbh Injecteur de polarisation à ressort pour lentille intraoculaire
US20130060257A1 (en) * 2011-09-07 2013-03-07 Sdi Surgical Device International Gmbh Modular intraocular lens injector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019142067A3 (fr) * 2018-01-19 2019-08-29 Johnson & Johnson Surgical Vision, Inc. Système d'insertion d'une lentille intraoculaire
EP4005531A1 (fr) * 2018-01-19 2022-06-01 Johnson & Johnson Surgical Vision, Inc. Système d'insertion de lentille intraoculaire
US12144725B2 (en) 2018-01-19 2024-11-19 Johnson & Johnson Surgical Vision, Inc. Intraocular lens insertion system

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