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| Article for infants, forming pacifier and teething ring simultaneously |
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| Corneal holder |
| OF THE INVENTION The corneal holder of the present invention will be better understood by ... |
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| Blood transfusion connector assembly |
| OF THE INVENTION Referring first to FIG. 1, there is shown a container 10 constituting a source of ... |
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| Measuring probe |
| I claim: 1. An optical probe comprising: an outer sheath comprising a first end, a second end, and ... |
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| Process for determining parameters of interest in living organisms |
| It is an object of the invention to propose a simple method which should also be suitable for use ... |
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| Safety syringe |
| A safety syringe is disclosed. The syringe includes a syringe barrel, a plunger, a needle, a needle ... |
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| Device or apparatus for manipulating matter having a elastic ring clip |
| OF THE FIRST ASPECT OF THE INVENTION Preferably the invention provides such a device or apparatus ... |
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| Surgical fastener and delivery system |
| Accordingly, an object of the present invention is to provide a surgical fastener that can access ... |
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Intraocular lens
| Details |
Inventors: Grendahl, Dennis T.;
Assignee:
Primary Examiner: Frinks; Ronald L.
Assistant Examiner:
Attorney, Agent or Firm: Jaeger; Hugh D.
Intraocular lens including a plano-convex lens and a plurality of flexible closed loops spaced about a circumference of an edge of the lens, one end of each closed loop fixedly secured into a hole in the edge and the other end of the closed loop in slidable engagement with an other hole in the edge, the other hole of a larger geometrical cross section than the cross section of the slidable end of the closed loop thereby providing an all-size lens. The arms of each loop can be planar or vaulted. A geometrical section of loop material such as a U-shaped curve or S-shaped curve can be positioned in the loop providing for additional sizing, adjusting and positioning of the slidable end of the loop. Pressure-relief ports can be provided through a port in the convex surface, the plano surface, or the edge or any combination thereof. Pressure relief can also be provided through an elliptical or notched hole for the slidable end of the loop, or a notched or tapered portion of the slidable end of the loop. |
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DETAILED DESCRIPTION The general purpose of the present invention is to provide an implantable intraocular lens which is accommodating to all sizes of eyes through a slidable loop.
In addition, the slidable loops will provide required flexibility during movement and touch of the eye.
The loops may also include a pressure-relief system to relieve any pressure which may build up in a hole of the sliding loop structure.
According to the present invention, there is provided a lens such as a plano-convex lens including a plano surface, a convex surface and an edge about the circumference having a finite height, a plurality of spaced holes for accepting closed loops, one of the holes of like or slightly larger diameter than the other and at last one closed loop, one end of the closed loop secured into a hole and the other end of the closed loop in slidable engagement with the other hole whereby the free end of the loop is slidable in and out of the hole thereby inherently adjusting the closed loop extending beyond the edge of the lens.
A predetermined geometrical configuration such as an S-shaped or U-shaped curve can be positioned toward the base of the closed loop for accommodating and reducing the length of the movement going from a larger size to a smaller size.
According to another embodiment of the present invention, there is provided a pressure-relief system between the slidable and free end of the closed loop and the larger hole in the lens.
This pressure-relief system operates on the principle of providing a path for fluid and internal air pressure to flow along the length of the slidable loop or out of the hole as required.
According to other embodiments of the present invention, there is provided a pressure-relief system which can include a port through the plano, convex or edge surfaces of the lens intersecting the end of the slidable hole; a difference in geometrical cross section between the slidable free end of the loop and the hole such as where the hole would have an elliptical cross section while the loop has a circular cross section; the loop would have a finite tapered free end while the hole would have a circular cross section; and, either the hole could have a longitudinal groove, notch, etc
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