[go: up one dir, main page]

WO2025141599A1 - Outil de découpe de lentille lio - Google Patents

Outil de découpe de lentille lio Download PDF

Info

Publication number
WO2025141599A1
WO2025141599A1 PCT/IN2024/052371 IN2024052371W WO2025141599A1 WO 2025141599 A1 WO2025141599 A1 WO 2025141599A1 IN 2024052371 W IN2024052371 W IN 2024052371W WO 2025141599 A1 WO2025141599 A1 WO 2025141599A1
Authority
WO
WIPO (PCT)
Prior art keywords
intraocular lens
cutting tool
tool according
lens
lens cutting
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.)
Pending
Application number
PCT/IN2024/052371
Other languages
English (en)
Inventor
Neha Dholakia
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 WO2025141599A1 publication Critical patent/WO2025141599A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B17/3201—Scissors
    • 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
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
    • A61F9/00745—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments using mechanical vibrations, e.g. ultrasonic
    • 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
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
    • A61F9/00763—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments with rotating or reciprocating cutting elements, e.g. concentric cutting needles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/30—Surgical pincettes, i.e. surgical tweezers without pivotal connections
    • A61B2017/305—Tweezer like handles with tubular extensions, inner slidable actuating members and distal tools, e.g. microsurgical instruments

Definitions

  • the invention particularly relates to an ophthalmic lens system such as surgical cutting instrument for cutting or removal of intra-ocular lens (IOL).
  • IOL intra-ocular lens
  • the invention specifically relates to a ‘v’ shaped surgical device for cutting or removing an intra-ocular lens implant.
  • the invention relates to a cutter or scissors for cutting of the lens used in ophthalmic surgery with tapered sides.
  • the human lens is responsible for focusing the images on the back of the eye that are in the gaze of the eye.
  • the human eye is somewhat analogous to a simple film camera. There are some lenses that focus the light at the front of the camera as in the eye.
  • the retina which is a neurosensory membrane, that converts the optical image into neurological electrical activity that is transmitted to the vision center of the brain.
  • the eye If one thinks of the eye as a video camera that has a chip that converts the image to electrical activity and send it to the monitor which in the eye's case is the occipital lobe of the brain. Cataract is considered as one of the main cause for blindness in the world.
  • the clouding of the human lens causes cataracts. In reality the human lens yellows and becomes less clear with age, when it clouds it is called a cataract. The cataract is somewhat akin to water that appears clear until it goes over a waterfall and appears white to the observer.
  • cataract is derived from the same Greek root for the name of a waterfall or cataract. It is estimated that globally there are approximately 100 million eyes with cataract causing a visual acuity less than 6/60, and this number is likely to be 3–4 times more for cataract surgery causing an acuity of less than 6/18. In the United States, there are more than 1,000,000 cataract extractions a year in the United States and this makes cataract surgery procedure one of the most commonly performed surgery. The complication rate is believed to be about 2%, which would be 30,000 cases a year of an intraocular mishap. There is probably a 20% incidence in this group of complications that are repairable by removing and replacing the intra- ocular lens implant.
  • An Intraocular lens is a lens implanted in the eye usually as part of a treatment for cataracts or for correcting other vision problems such as short sightedness and long sightedness, a form of refractive surgery. If the natural lens is left in the eye, the IOL is known as phakic, otherwise it is a pseudophakia lens (or false lens).
  • Both kinds of IOLs are designed to provide the same light-focusing function as the natural crystalline lens.
  • This can be an alternative to LASIK, but LASIK is not an alternative to an IOL for treatment of cataracts.
  • the intraocular lens that was originally placed can require removal and replacement in 3% of these cases.
  • Cataract extraction results from removing the cloudy lens from the eye. This also causes the eye to lose its ability to focus light on the retina unless it is replaced. In days gone by the elderly cataract patient was relegated to a handicapped life only being able to see with extremely thick aphakic (no lens) glasses.
  • Phacoemulsification is also a cataract method in which the internal lens of the eye which has developed a cataract is emulsified with the tip of an ultrasonic hand piece and aspirated from the eye. Aspirated fluids are replaced with irrigation of balanced salt to maintain the volume of the anterior chamber during the procedure. This procedure minimizes the incision size and reduces the recovery time and risk of surgery induced astigmatism. It is best suited to relatively soft cataracts, where the ultrasonic energy required is moderate, and insertion of foldable intraocular prosthetic lenses, which take advantage of the small incision possible.
  • the phacoemulsification system comprises three sub-systems: Ultrasound, aspiration, and irrigation.
  • Ultrasound The ultrasound component is used to break the lens down into particles small enough to be aspirated through the suction passages around the tip, which allows a very small incision for access. The incision is small enough that sutures are not needed for closure, and very little astigmatism is caused by healing of the wound in the cornea.
  • the phacoemulsification hand piece has a tip which vibrates longitudinally at a frequency in the range of 27 to 60 kHz, with a stroke length of 60 to 150 micrometers.
  • Power is adjustable by the operator as a percentage of full power, and indicates a variation in nominal stroke length. Actual stroke length may vary slightly depending on the density of the material it contacts, though some instruments use feedback to maintain nominal stroke by adjusting current, voltage or frequency. Nominal frequency is not adjustable. Both efficiency and heat generation are increased with higher frequency, and 40 kHz is considered a good compromise and is in common use.
  • EP 0316085 B1 discloses a surgical cutting instrument for use in cutting and evacuating material from parts and organs of animal and human bodies.
  • vitrectomy hand pieces for providing irrigating and aspirating and cutting functions for cutting and removing vitreous, blood clots, and other material from the eye during intraocular surgery, and to such hand pieces which more particularly incorporate reciprocating cutters.
  • US 2004/0243142 A1 discloses an intraocular device designed to cut or section an intra-ocular lens in the eye in order to remove it through the original small implantation incision. The device represents a departure from all present technology, which makes use of either a scissor or a snare like mechanism.
  • This application discloses an extraction device for extracting a deformable intraocular lens, the extraction device comprising a retracting band that is extended for receiving and retracted for engaging the deformable intraocular lens and for drawing the engaged deformable intraocular lens in an enclosed manner against a cutting blade, wherein the deformable intraocular lens is drawn into and cut by the cutting blade as the retracting band is retracted.
  • US 2016/0263781 A1 discloses an apparatus and method for manufacturing intraocular lenses.
  • two mold components an outer mold component and an inner mold component
  • the outer mold may be composed of a metal or other refractory material and may serve as the outer die into which a lens forming material can be introduced.
  • the inner mold component may be composed of a softer or more compliant material and may be deployed within the outer mold component.
  • US 4,629,462 A discloses an intraocular lens for use as an artificial lens implant in the human eye. It specifically discloses an intraocular lens suitable for use as an artificial lens implant in the human eye, comprising a lens body having first and second position fixation members extending from opposite sides of the periphery of said lens body, each of said position fixation members comprising a stem portion having first and second ends, a coil portion having first and second ends, and a peripheral portion extending to a position such that it may engage the tissue of the eye, each of said coil portions being located between said lens body and the peripheral portion of its position fixation member, said first end of each of said stem portions being joined to said lens body, said second end of each of said stem portions being joined to said first end of its associated coil portion, said first and second ends of each of said coil portions cross each other as seen in a plane generally perpendicular to the axis to said lens body, each
  • EP 1572440 B1 discloses an apparatus and method for cutting an IOL optic from an IOL blank whereby the resultant IOL optic has a square edge and the cutting is performed in a combined linear and rotational cutting movement.
  • an IOL optic is provided which includes a square edge and helically shaped striations formed therein to help reduce glare.
  • the cutters available in the market such as IOL cutter in a small size which strengthen boons to IOL ex-plantation procedure.
  • the 19-gauge instrument can fit through 1.2-mm paracentesis incision, according to surgeon.
  • the technique of IOL fragmentation includes dissection of IOL optic part with specially designed scissors. These micro scissors designed for insertion through a paracentesis incision while the surgeon holds the optic through the phacoemulsification incision in to two or three parts.
  • There is a technique to remove IOL by molecular cartage but this can be only be done after 3.5 mm cut.
  • the major challenge associated with all these scissors/cutters are process of managing and operating IOL removal because the most of the removal is done by incision of 2.7-3.5 mm.
  • the inventor has discovered a ‘v’ shaped ophthalmic lens system such as surgical cutting instrument for cutting or removal of intra-ocular lens (IOL). Moreover, the invention relates to an intraocular lens tool device with tapered sides of cylindrical body for cutting the lens. SUMMARY OF THE INVENTION The present invention relates to an ophthalmic lens system such as surgical cutting instrument for cutting or removal of intra-ocular lens (IOL) and operate cataract.
  • an intra ocular lens cutting tool in a cataract procedure.
  • the lens cutting tool comprising a hub, a cylindrical body and a tip.
  • an intraocular lens tool having a ‘v’ shaped tip for cutting of intra-ocular lens which is coupled to the cylindrical body part.
  • the present invention comprising an intraocular lens cutting tool with a ‘v’ shaped tip comprising a plurality of symmetrical cutting edge.
  • the intraocular lens cutting tool comprising a ‘v’ shaped tip with a symmetrical cutting edge, wherein the tool can cut incision wound without stretching.
  • an intraocular lens cutting tool comprising a cylindrical body having a tubular portion and tapered portion. The tapered portion of the cylindrical body is flattened from all sides towards the tip. The tapered portion of the cylindrical body has length ranges between about 5 mm to 30 mm.
  • an intraocular lens cutting tool can cut lens easily into two to five parts depending upon the need during the surgery.
  • an intraocular lens cutting tool comprising a ‘v’ shaped tip which can cut all types of lens such as hydrophilic, hydrophobic or any other form of the intraocular lens.
  • FIG.2 is a perspective view of a preferred embodiment of the high efficiency intra ocular lens cutting tool showing the cylindrical body having a tubular portion and tapered portion wherein the tapered portion substantially connected to ‘v’ shaped tip.
  • FIG.3 is a rear left side view of the intra ocular lens cutter tool device.
  • FIG.4 is a sectional front view of a ‘v’ shaped tip from front side for high efficiency intra ocular lens device.
  • FIG.5 is an enlarged view of a cutting edge of the ‘v’ shaped tip responsible for cutting of lens.
  • FIG.6 is a three-dimensional front view of an intra ocular lens cutting tool device with ‘v’ shaped tip showing tapered sides of the body.
  • FIG.7 is a three-dimensional rear view of an intra ocular lens cutting tool device with ‘v’ shaped tip having a contacting and connecting end as well as showing narrow side and widened side of the tapered portion of the body.
  • FIG. 8 is an open position of supportive jaws for collecting the intra ocular lens during cutting process.
  • Fig. 9 is a closed position of supportive jaws for collecting the intra ocular lens during cutting process.
  • Intraocular lens cutting tool shall refer to a device or an apparatus which is used for the purpose of cutting/deforming/removing intraocular lens from eye during ophthalmic surgery process.
  • Intraocular lens cutting tool can be interchangeable with intraocular lens extraction device or intraocular lens removal device or intraocular lens cutter or intraocular lens removable tool or a like thereof.
  • the term “cataract surgery” also called as “lens replacement surgery” described as the lens removal from the human eye and usually replacing with an artificial intraocular lens.
  • the natural lens of human eye has developed a cataract, an opaque or cloudy area which leads to blurred or loss of vision in the patients.
  • an intraocular lens (IOL) is a tiny, artificial lens for the eye.
  • “phacoemulsification” or “phaco” is a method of cataract surgery in which the eye's internal lens is emulsified using ultrasonic energy and replaced with an intraocular lens implant or IOL.
  • a “tip” refers to a portion that is proximate to the end side of the body of intraocular lens cutting device and that contacts the tissue to be deformed.
  • a “body” refers to a portion of the intraocular device extending from the tip to the device mount and attached to the lateral part of the device.
  • the “hub” portion refer to the lateral part of the device which is connected to the body part through screw or by any other suitable mechanism.
  • the “cutting edge” refer to an inner side plain surface part of the tip portion which allows easy cutting and slicing of various tissues without incision.
  • the “tubular portion” refer to a proximal portion of the cylindrical body which is in tubular form and attached by hub joint to the device.
  • the “tapered portion” refer to a distal portion of the cylindrical body which is flattened from all sides towards cutting tip and allow easy handling of the device during surgery procedure without incision.
  • the Fig 1 describes front side view of the Intra ocular lens cutting device having a ‘v’ shaped tip.
  • the intraocular lens cutting device has a body part 1, a tip 2, a screw 3, and a hub 4.
  • the tip 2 is in ‘v’ shape form or any other similar shape like thereof.
  • the Fig.1 shows substantially ‘v’ shaped front view of the intraocular cutting tool.
  • the present invention discloses a tip having a ‘v’ shaped cut or notch within the contacting end which provides optimum slicing or cutting action while also maintaining asymmetrical hand piece operation, an optimum ultrasonic cavitation field, and optimum aspiration.
  • the present invention represents a ‘v’ shaped tip which can be utilized in the ultrasonic generator hand piece and provides the traditional ultrasonic and aspiration benefits and allows a surgeon to use the ultrasonic hand piece in any rotational axis position.
  • the ‘v’ shaped nonmoving or fixed open tip 2 has a connecting end and a contacting end, yet the contacting end is uniquely shaped to provide the aforementioned cutting action.
  • said connecting end contains a substantially ‘v’ shaped cut which provides the desired cutting or slicing action along with a desirable locus for uniform aspiration and ultrasonic field generation.
  • the base of the ‘v’ shaped cut is placed opposite the contacting end, or towards to the connecting end.
  • the body 1 has a cylindrical or tube like shape thereof.
  • the cylindrical body ranges between about 5 mm to about 30 mm in length.
  • the cylindrical body in the present invention has length between about 15 mm to about 28 mm.
  • the tip portion 2 is vibrated through body part 1 and it extends longitudinally out of the body 1 in order to engage an implanted deformable intraocular lens.
  • the tip portion 2 has plurality of symmetrical cutting edges 5 showing open position of ‘v’ shaped tip 2.
  • the tip 2 may have preferably two, three or more symmetrical edges 5 for cutting the intraocular lens. As the lens is drawn into the cutting tip, the lens is split into multiple parts and allowing it to be safely retracted from the posterior chamber.
  • the ‘v’ shaped tip length size from about 5mm or less. Preferably, the length of the present invention tip has 2 mm or less.
  • the ‘v’ shaped tip 2 is disposed at an angle between about 2 degrees to about 50 degrees as the maximum interior angle relative to a cylindrical body 1. Preferably, the tip is disposed at an angle of between about 15 to 45 degrees, and more preferably at angle of 35 degree to the cylindrical body 1.
  • the ‘v’ shaped tip allows no stretching of the wound and skilled person can easily cut the intraocular lens into thinner sleeves.
  • the ‘v’ shaped tip of the device is very safe for the endothelium part and posterior capsule.
  • the screw 3 part contains zigzag shaped pattern for firmly holding screw during joint operation followed by straight pattern so that the hub 4 can joined in easy manner to body part 1 of the device.
  • the screw 3 has length size between about 0.1 mm to about 5 mm in length, preferably 3 mm or less.
  • the zigzag pattern of the screw has length size between about 3mm or less, preferably 2mm or less.
  • the straight pattern has length size between about 2mm or less, preferably 1mm or less.
  • a hub 4 is disposed at a proximal end of the device for engaging an ultrasonic hand piece (not shown) in order to couple ultrasonic energy to the needle body.
  • the hub 4 is attached to the body part 1 by a screw 3 or any other possible joint mechanism.
  • the hub 4 has length size ranges between about 2mm to 6mm, preferably between about 3mm to 5mm and more preferably about 2mm in the present invention.
  • the entire intraocular lens cutting tool device has length in range from about between 10mm to about 40mm, preferably between about 25mm to about 30mm and more preferably about 28mm in the present invention.
  • the Fig 2 describes a perspective view of a preferred embodiment of the high efficiency intra ocular lens cutting tool showing the cylindrical body having a tubular portion and tapered portion wherein the tapered portion substantially connected to ‘v’ shaped tip.
  • a tubular portion 6 of the cylindrical body is attached one side to the hub joint and other side to the tapered portion 7.
  • the tubular portion 6 provides mechanical strength to the body part which helps firmly in holding entire device parts together during surgery procedure.
  • the tubular portion 6 has length ranges between about 3mm to about 15mm, preferably between about 5mm to about 10mm and more preferably about 7mm in the present invention.
  • the internal diameter of the tubular portion 6 has size between about 0.4mm to about 2mm, preferably between about 0.8 mm to about 1.5mm.
  • the preferred internal diameter of the tubular portion 6 is 1.2mm in the present invention.
  • the inventors of the present invention has discovered an intraocular lens cutting tool device with a cylindrical body 1 having a tapered portion 7. This tapered portion 7 has flattened surface from one or more side towards tip 2, preferably the flattened surface at two sides towards the tip.
  • a tapered portion 7 of the cylindrical body is integrated to the one side at tubular portion 6 and to the other side at ‘v’ shaped tip 2.
  • the tapered portion 7 has length ranges between about 3mm to about 25mm, preferably between about 10mm to about 20mm and more preferably about 15mm in the present invention.
  • the cutting edges 8 of the ‘v’ shaped tip 2 in the present invention facilitates surgeon in making initial incision in the eye, and these cutting edges 8 works in conjunction with the ultrasonic power source to perforate the anterior capsule within the eye. Following this perforation, the cataract may be extracted.
  • the ‘v’ shaped tip 2 having a cutting edge 8 is disposed at an interior angle between about 5 degrees to about 90 degrees relative to a longitudinal axis of the cylindrical body 1.
  • the cutting edges 8 is disposed at an angle of between about 20 to 60 degrees, and more preferably at angle between about 30 to about 50 degrees to the cylindrical body 1.
  • the blade 9 of the ‘v’ shaped tip 2 can cut intraocular lens at any angle between about 0 degrees to about 90 degrees, more preferably between about 20 to about degrees.
  • the interior angle between the symmetrical cutting edges 5 of ‘v’ shaped tip 2 ranges between about 20 degrees to about 70 degrees, preferably from about 30 to about 50 degrees and more preferably about 35 degrees which can flexibly adjust all sides of the lens during ophthalmic surgery operation and cut the lens easily without undue efforts.
  • the figure 3 describes a rear left side view of the intra ocular lens cutter tool device. The screw 3 part left side rear view is reflected in figure 3 in which zigzag pattern for the initial area of screw shown.
  • the center part of the screw 10 joining the hub with the cylindrical body is shown in figure 3 and this center part 10 has round, circular or similar shape like that.
  • the center part 10 has internal diameter ranges between 1mm to about 3 mm and preferably between about 2mm in the present invention.
  • the figure 4 in the present invention describes a sectional front view of a ‘v’ shaped tip 2 from front side.
  • the cutting-edge irregular shape pattern 11 shown in the middle of the figure 4 shows the sectional front portion of the ‘v’ shaped tip 2 in opposite direction as shown in dual mode.
  • the figure 5 describes an enlarged view of a cutting edge of the ‘v’ shaped tip responsible for cutting of lens.
  • the cutting edges 8 of the ‘v’ shaped tip 2 with a blade 9 is shown in enlarged view in the figure.
  • the interior angle 12 between the cutting edges 8 and cylindrical body 1 describes the position of the tip 2 placement in the device. This interior angle can be adjustable as per the user’s requirement and depending upon the complexity of the surgery.
  • the ‘v’ shaped tip 2 having a cutting-edges 8 disposed at an interior angle 12 between about 5 degrees to about 90 degrees relative to a longitudinal axis of the cylindrical body 1, preferably between about 35 to about 60 degrees and more preferably about 45 degrees which helps in easy slicing of tissue during surgery without any kind of incision.
  • the figure 6 reflects a three-dimensional front view of an intra ocular lens cutting tool device with ‘v’ shaped tip showing tapered sides of the body.
  • the tapered side 13 of the body part 1 is the inventor discovery of the present invention which is in flattened shape and due to this, the ophthalmic practitioners can easily explant the intraocular lens without extending the wound in easy manner.
  • the figure 7 describes a three-dimensional rear view of an intra ocular lens cutting tool device with ‘v’ shaped tip having a contacting and connecting end.
  • the contacting end 14 is a sharp top portion of the cutting edges 8 and this contacting end 14 contacts or touches first time to the tissue or endothelium of the human eye area during cataract surgery.
  • the connecting end 15 is a bottom side portion (not reflected in figure) of the cutting edges 8 which attach directly to the tapered portion 7 of the body part 1.
  • This connecting end 15 integrated firmly with the body part 1 and works in conjunction with the ultrasonic power source to perforate the anterior capsule within the eye.
  • the figure 7 also describes about narrow side 16a and widened side 16b for tapered portion 7 of body 1 in intraocular lens cutting tool device.
  • the figure 1 shows an internal diameter of the narrow side 16a of the tapered portion 7 between about 0.1 mm to about 1 mm, preferably between about 0.3 mm to about 0.7mm.
  • the preferred internal diameter is 0.4 mm in the present invention.
  • the figure 1 also shows an internal diameter of the widened side 16b of the tapered portion 7 between about 0.5 mm to about 3 mm, preferably between about 0.8 mm to about 2mm.
  • the preferred internal diameter between about 1mm to about 1.1 mm in the present invention.
  • the figure 8 describes an open position for supportive jaws 17 for collecting the intra ocular lens during cutting process.
  • the space 18 shown between jaws describe about open position during cataract surgery process by which surgeon or ophthalmic practitioner can extract the cut portion of lens from surgery side without any hassle.
  • the figure 9 describes a closed position 19 of supportive jaws 17 for collecting the intra ocular lens during cutting process.
  • the closed space 19 reflected in figure 9 describes about the lens collected material inside the jaws and showing closed position.
  • Intraocular lens cutting surgery is required when certain types of conventional ophthalmic surgery is unable to disrupt lens tissue and intraocular objects such as intraocular lenses or vitreous bodies so that they can be removed from the eye.
  • the present invention utilizes a phacoemulsification process which uses ultrasonic energy of Phaco machine to emulsify the lens and aspiration to remove the lens emulsion from the eye, most preferably wound and endothelium portion during surgery.
  • a typical phacoemulsification system includes a compact and console in operative communication with a phacoemulsification hand piece.
  • Consoles typically include a cabinet that includes a power supply, a pump, electronics and associated hardware. The console provides control of the electronics of the hand piece, aspiration and irrigation.
  • the hand piece includes a resonant rod attached directly to a set of piezoelectric crystals at a first end and a needle-like cutting tube on a second end.
  • the hub 4 as shown in figure 1 is joined by screwing 3 with phacoemulsifying probe.
  • the probe is connected to the machine with its mechanism of the sonication the distal cutting tips with shape of ‘v’ mouth cuts the lens with minimum movement of the tip and with high shearing force the lens cut in to two or three parts and this can be supported by the serrated jaw 17 as shown in figure 8.
  • the ‘v’ shaped tip 2 having a plurality of symmetrical cutting edges 5 which cuts the lens with minimum movement inside the eye chamber and the tip can easily cut the wound by incision from 1 mm to 5 mm without stretching the wound.
  • the tip can cut the wound more than 2 mm without stretching during the surgery easily.
  • each sleeve has 2 mm in width and can be removed gently and easily through a 2.2 mm incision without stretching or extending the wound at all.
  • the tip is prepared by the medical grade stainless steels or any other suitable material.
  • the phaco probe has to be primed just as usual with normal tip and then the tip is removed and the IOL cutting tip is screwed-in and tightened.
  • the sleeve has to be attached.
  • the forceps are such that the jaws of the forceps open and close vertically just like the mouth of a ‘v’ but the grip is such that it is horizontal and open and close parallel to the ground between the thumb and the middle of the index finger. It is ergonomically designed for ease of use.
  • the tip is ergonomically designed for ease of use.
  • the intraocular lens cutting tool device is manufactured from materials such as metal and their alloys or a like thereof.
  • the metals and alloys include but not limited to steel, stainless-steel, titanium or a like thereof. More preferably, the device is made from stainless steel of medical grade material.
  • the present invention intraocular lens cutting tool device can cut hydrophilic, hydrophobic or any other form of intraocular lens.
  • the device can cut intraocular lens into 2 to 7 parts, preferably into 3 to 6 parts and more preferably into 4 to 5 parts easily without any hassle and without applying much exertion during surgery.
  • Various modifications may be made to the presented embodiments by a person of ordinary skill in the art.
  • An intra ocular lens cutting tool for ophthalmic procedures comprising a hub, a cylindrical body and a tip.
  • the intraocular lens cutting tool according to claim 1 wherein the said tip is in ‘v’ shaped and having a plurality of symmetrical cutting edge and wherein the said ‘v’ shaped tip having a length about 5 mm or less.
  • the said cylindrical body contained solid tubular portion and tapered portion and cylindrical body has flattened surface from one or more sides towards tip. 4.
  • the intraocular lens cutting tool according to claim 2 wherein the said ‘v’ shaped tip is disposed at an angle between about 2 degrees to about 50 degrees as the maximum interior angle relative to a cylindrical body and the interior angle between the symmetrical cutting edges of ‘v’ shaped tip ranges between about 20 degrees to about 70 degrees.
  • the intraocular lens cutting tool according to claim 7 wherein the internal diameter of the tapered portion ranges between about 0.1mm to about 3mm and cylindrical body has length ranges between about 1mm to about 30mm, wherein the said tapered portion of the cylindrical body has length ranges between about 3mm to 25mm and the said hub having a length between about 2mm to about 6mm. 6.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Vascular Medicine (AREA)
  • Pathology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Prostheses (AREA)

Abstract

La présente invention a trait à la chirurgie couramment développée et bien établie de la cataracte avec une lentille intraoculaire (LIO). Le mode de réalisation courant de l'invention concerne une solution de situation chirurgicale et post-opératoire de lentille LIO lors du retrait d'une lentille implantée lorsque celle-ci n'a pas été correctement mise en place ou que certains dommages ou un certain inconfortable sont observés, avec certains états pathologiques affectant des patients. Le mode de réalisation courant est associé à un outil qui peut découper la lentille LIO pour faire face à une situation très délicate associée à une contrainte spatiale et à une sensibilité de tissulaire. Le mode de réalisation courant de l'invention se rapporte à la découpe d'une lentille intraoculaire que ce soit dans des conditions hydrophobes ou hydrophiles.
PCT/IN2024/052371 2023-12-29 2024-12-11 Outil de découpe de lentille lio Pending WO2025141599A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202321090030 2023-12-29
IN202321090030 2023-12-29

Publications (1)

Publication Number Publication Date
WO2025141599A1 true WO2025141599A1 (fr) 2025-07-03

Family

ID=96216998

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2024/052371 Pending WO2025141599A1 (fr) 2023-12-29 2024-12-11 Outil de découpe de lentille lio

Country Status (1)

Country Link
WO (1) WO2025141599A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6605093B1 (en) * 1997-10-24 2003-08-12 Tekia, Inc. Device and method for use with an ophthalmologic insertor apparatus
WO2023007260A1 (fr) * 2021-07-27 2023-02-02 Clinica Oftalmológica Del Caribe Instrument de coupe de matière intraoculaire et extraoculaire

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6605093B1 (en) * 1997-10-24 2003-08-12 Tekia, Inc. Device and method for use with an ophthalmologic insertor apparatus
WO2023007260A1 (fr) * 2021-07-27 2023-02-02 Clinica Oftalmológica Del Caribe Instrument de coupe de matière intraoculaire et extraoculaire

Similar Documents

Publication Publication Date Title
US10980669B2 (en) Method, apparatus and system for a water jet
US5403307A (en) Apparatus, system, and method for softening and extracting cataractous tissue
ES2296263T3 (es) Punta de facoemulsificacion.
JP6074422B2 (ja) 接眼レンズ切断装置
JP4370371B2 (ja) 水晶体嚢保持器具
US7223275B2 (en) System for cutting the cornea of an eye
US6358262B1 (en) Lamellar dissecting instrument
US5139504A (en) Apparatus, system, and method for softening and extracting cataractous tissue
US20110112466A1 (en) Extended Point Phacoemulsification Tip
AU2008200100A1 (en) Irrigation/aspiration tip
US20040243142A1 (en) Intraocular lens extracting device
US20100057095A1 (en) Method of Refraction Surgery of the Eye and a Tool for Implanting Intraocular Refractive Lens
TW200803816A (en) Corneal epithelial pocket formation systems, components and methods
JP4255582B2 (ja) 角膜切開装置
US20230000682A1 (en) Surgical instrument
WO2014011231A1 (fr) Capsulotomie postérieure à l'aide de techniques laser
CA2534416C (fr) Embout et appareil de phacoemulsification et methode d'utilisation connexe
US9867636B2 (en) Method, apparatus, and a system for a water jet
JP3081896B2 (ja) 眼科用メス
US12458533B2 (en) Capsulorhexis apparatus and method
WO2025141599A1 (fr) Outil de découpe de lentille lio
KR101573982B1 (ko) 백내장 수술용 보조기구
WO2006096335A2 (fr) Embout pour phaco-emulsification
US11813198B1 (en) Circular capsulotomy incision tool
RU2177286C2 (ru) Способ экстракции катаракты при узком ригидном зрачке

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24911777

Country of ref document: EP

Kind code of ref document: A1