WO2001013821A1 - Loading plate for ophthalmic lens - Google Patents
Loading plate for ophthalmic lens Download PDFInfo
- Publication number
- WO2001013821A1 WO2001013821A1 PCT/GB2000/002988 GB0002988W WO0113821A1 WO 2001013821 A1 WO2001013821 A1 WO 2001013821A1 GB 0002988 W GB0002988 W GB 0002988W WO 0113821 A1 WO0113821 A1 WO 0113821A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lens
- recess
- loading plate
- portions
- haptics
- Prior art date
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, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2/1613—Intraocular lenses having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
- A61F2/1616—Pseudo-accommodative, e.g. multifocal or enabling monovision
-
- 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, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2/1662—Instruments for inserting intraocular lenses into the eye
- A61F2/1664—Instruments for inserting intraocular lenses into the eye for manual insertion during surgery, e.g. forceps-like instruments
Definitions
- This invention relates to loading plates for use in the insertion of an intraocular lens into a lens injector for subsequent insertion into the eye.
- a lens injector is used in combination with a loading plate and a pair of forceps.
- the intraocular lens is set on the loading plate.
- the loading plate is provided with a surface slot and with a number of pins set on the locus of a circle so that the leading haptic and the trailing haptic on the lens are held by the pins.
- the lens overlaps one end of the slot.
- the lower jaw of the forceps is placed in the slot of the loading plate, making sure that the trailing haptic is below the jaw. With the forceps open, the lower jaw is slid forwards until it strikes the end of the slot . When the lower jaw is thus correctly registered, the forceps are closed, gripping the lens firmly.
- the lens can then be loaded into the injector. Further details of this procedure are described in our International patent application PCT/GB99/00216 , published as W099/37247.
- a loading plate for use in the insertion of an intraocular lens having a leading haptic and a trailing haptic into a lens injector, comprising a plate having a surface recess, the recess having a first portion in which the lens is arranged to be seated and second and third portions in which the leading and trailing haptics respectively are arranged to lie.
- the haptics can sit below the surface of the loading plate.
- the recess portions in which the haptics lie are preferably curved, to receive the leading and trailing haptics respectively, with the curves preferably being symmetrical .
- a further advantage of the use of recessed channels for the haptics is that the haptics can then be biased automatically towards the outside of the channels, which additionally reduces the risk of adverse contact between the forceps and the haptics .
- the recess includes a linear slot portion for receipt of the lower jaw of a pair of forceps, the slot portion having a greater depth than said first, second and third portions.
- Fig. 1 is a top plan view of the loading plate with its recess ;
- Fig. 2 is a side view of the loading plate of Fig. 1;
- Fig. 3 is a view on an enlarged scale of the recess in the loading plate, showing the lens in place;
- Fig. 4 illustrates how the lens is picked up from the loading plate using forceps. Description of the Preferred Embodiment:
- the loading plate which is indicated generally at 10, is a thin rectangular plate, for example of titanium or a titanium alloy. Midway along the length of the plate there is provided a recess 12 in the upper surface of the plate.
- the recess 12 has a depth which is approximately half the depth of the plate 10, as can be seen most clearly from Fig. 2.
- the recess 12 has a generally circular central portion 14 which extends forwards and rearwards as arcuate recess portions 16 and 18 respectively.
- the arcuate recess portions 16, 18 each extend through an angle of substantially 90°.
- the configuration of the central portion 14 and arcuate portions 16 and 18 of the recess corresponds generally to the shape of the lens with its haptics which is to be positioned in the recess.
- the leading and trailing haptics 22 and 24 respectively lie within the respective arcuate portions 16 and 18 of the recess and by their nature lie in contact with the outer wall of the arcuate portions. This is due to the self-biasing nature of the haptics 22, 24. Because the haptics sit in channels, they lie below the surface of the loading plate .
- a linear extension 26 of the arcuate section 18, and also a deeper recess 28 which is of slot-like shape and which extends forwards to a position just below the rearward edge of the lens 20 when the lens is seated in the central portion 14 of the recess.
- the rear extension 26 and the deeper recess 28 serve as guides for the forceps which are used to pick up the lens from the loading plate.
- the particular configuration of the recess which is shown in the drawings is not to be regarded as limiting the scope of the invention. Other dimensions and configurations can alternatively be used.
- Fig. 4 shows how a pair of forceps 30 are used to pick up the lens 20 from the loading plate.
- the forceps comprise an upper jaw 32 and a lower jaw 34.
- Each jaw which is of titanium or a titanium alloy, has a tip insert 36, 38 of PEEK material.
- the upper tip insert 38 has a stop 40 upstanding from its upper surface.
- the lens 20 is first placed on the loading plate in the position shown in Fig. 3.
- the forceps 30 are opened and the lower jaw 34 is placed in the slot 28 in the loading plate, making sure that the trailing haptic 24 is below the jaw. With the forceps open, the lower jaw is slid forwards until the tip insert 38 strikes the forward end of the slot 28.
- the forceps are then closed, gripping the lens 20 firmly between the tip inserts 36, 38.
- the lens can then be loaded into the injector for delivery. Holding the lens firmly with the forceps, the leading haptic 22 is placed in a loading guide of the injector and the forceps are slid forwards until the lens is correctly positioned. This is defined by the stop 40 engaging an abutment in the injector.
- the tips of the forceps are then opened and removed from the injector, leaving the lens in the correct position.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0111346A GB2358355A (en) | 1999-08-24 | 2000-08-01 | Loading plate for ophthalmic lens |
EP00949781A EP1123066A1 (en) | 1999-08-24 | 2000-08-01 | Loading plate for ophthalmic lens |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9919932.5 | 1999-08-24 | ||
GBGB9919932.5A GB9919932D0 (en) | 1999-08-24 | 1999-08-24 | Loading plate for ophthalmic lens |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001013821A1 true WO2001013821A1 (en) | 2001-03-01 |
Family
ID=10859653
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2000/002988 WO2001013821A1 (en) | 1999-08-24 | 2000-08-01 | Loading plate for ophthalmic lens |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1123066A1 (en) |
GB (2) | GB9919932D0 (en) |
WO (1) | WO2001013821A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5176686A (en) * | 1987-03-26 | 1993-01-05 | Poley Brooks J | Apparatus for packaging, folding, rigidifying and inserting an intraocular lens |
US5281227A (en) * | 1992-11-09 | 1994-01-25 | Allergan, Inc. | Lens case with IOL folding device |
US5454818A (en) * | 1994-07-26 | 1995-10-03 | Alcon Laboratories, Inc. | Intraocular lens folder |
US5556400A (en) * | 1994-12-27 | 1996-09-17 | Tunis; Scott W. | Methods of preparing and inserting flexible intraocular lenses and a configuration for flexible intraocular lenses |
WO1999037247A1 (en) * | 1998-01-22 | 1999-07-29 | Duckworth & Kent Limited | Lens injector |
-
1999
- 1999-08-24 GB GBGB9919932.5A patent/GB9919932D0/en not_active Ceased
-
2000
- 2000-08-01 EP EP00949781A patent/EP1123066A1/en not_active Withdrawn
- 2000-08-01 WO PCT/GB2000/002988 patent/WO2001013821A1/en not_active Application Discontinuation
- 2000-08-01 GB GB0111346A patent/GB2358355A/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5176686A (en) * | 1987-03-26 | 1993-01-05 | Poley Brooks J | Apparatus for packaging, folding, rigidifying and inserting an intraocular lens |
US5281227A (en) * | 1992-11-09 | 1994-01-25 | Allergan, Inc. | Lens case with IOL folding device |
US5454818A (en) * | 1994-07-26 | 1995-10-03 | Alcon Laboratories, Inc. | Intraocular lens folder |
US5556400A (en) * | 1994-12-27 | 1996-09-17 | Tunis; Scott W. | Methods of preparing and inserting flexible intraocular lenses and a configuration for flexible intraocular lenses |
WO1999037247A1 (en) * | 1998-01-22 | 1999-07-29 | Duckworth & Kent Limited | Lens injector |
Also Published As
Publication number | Publication date |
---|---|
EP1123066A1 (en) | 2001-08-16 |
GB2358355A (en) | 2001-07-25 |
GB0111346D0 (en) | 2001-07-04 |
GB9919932D0 (en) | 1999-10-27 |
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