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Use of microwave energy to disassemble, release, and hydrate contact lenses

A technology of contact lens and separating agent, applied in application, glasses/safety glasses, glasses/goggles, etc., can solve disadvantages and other problems, achieve the effect of reducing extraction time and simplifying hydration equipment

Inactive Publication Date: 2009-03-11
JOHNSON & JOHNSON VISION CARE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] With regard to separation and hydration of contact lenses, the prior art employs heated feed tanks and insulated piping to deliver heated solvents, which compares unfavorably to methods according to the present invention that deliver room temperature solvents and allow rapid heating of the solvent at the point of use

Method used

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  • Use of microwave energy to disassemble, release, and hydrate contact lenses
  • Use of microwave energy to disassemble, release, and hydrate contact lenses
  • Use of microwave energy to disassemble, release, and hydrate contact lenses

Examples

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Embodiment Construction

[0037] figure 2 A contact lens / mold assembly 8 comprising an anterior curvilinear mold and a substantially curvilinear mold is shown where a hydrogel soft contact lens is molded in the mold assembly according to figure 1 way of giving some instructions. The contact lens / mold assembly 8 is supported by a vacuum 20 controlled conveyor 22 which utilizes vacuum to hold the posterior curve mold 12 in place.

[0038]The lens / mold assembly 8 is placed in a microwave heating and processing demolding position where there is a microwave generator 24, a microwave waveguide 26, or also includes a microwave valve. The microwave waveguide 26 can be made from low cost sheet metal, the cost of which is already built into the design. The waveguide is practically 100% effective in containing and directing microwaves, and in addition, the waveguide is not subject to accelerated corrosion during the application of the present invention due to the various separations, washes, and DI solutions u...

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Abstract

An apparatus and method for disassembly, separation, and hydration of contact lenses utilizing microwave energy at one or more microwave heating and treatment locations. Microwave energy is used to facilitate separation of the anterior curve mold to which the HEMA ring is attached from the base curve mold to which the contact lens is attached, and the microwave energy is used to facilitate release of the contact lens from the base curve mold, and the microwave energy is further used to facilitate separation of the contact lenses Hydration of glasses.

Description

technical field [0001] The present invention relates generally to apparatus and methods for disassembling, separating, and hydrating contact lenses utilizing microwave energy, and more particularly to applying microwave energy to one or more heating and treatment locations for disassembling, separating and hydrating contact lenses. Background technique [0002] The state of the art for producing hydrogel soft contact lenses has evolved to automated molding systems and assembly lines, where each hydrogel soft contact lens is formed by sandwiching a monomer between a front mold part and a rear mold part. The monomers are polymerized to form lenses, which are then removed from between the two mold parts for further processing and packaging for consumer use. [0003] In typical prior art soft contact lens production, metal inserts are used in the injection molding process on injection molding machines to produce many thermoplastic injection molded front curve (FC) molds and back...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C39/02B29C39/38B29D11/00G02C7/04G02C13/00B29C33/06B29C33/44B29C35/08B29C37/00B29C39/36B29C41/42B29C71/00B29L11/00
CPCB29C33/44B29C41/42B29C2071/0027B29C39/36B29C37/0007B29C2035/0855B29C33/06B29C71/0009B29D11/00211B29D11/0024B29L2011/0041B29D11/00
Inventor O·卡尔文D·波文P·R·阿尔布雷克特森
Owner JOHNSON & JOHNSON VISION CARE INC
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