Multi-piece insert device with locking seal for ophthalmic devices

Patent metadata

Field	Value
Publication number	US-9810924-B2
Application number	US-201314134887-A
Country	US
Kind code	B2
Filing date	Dec 19, 2013
Priority date	Jan 9, 2013
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

This invention discloses methods and apparatuses for sealing and encapsulating components on and within a multi-piece insert. In some embodiments, an ophthalmic lens is cast molded from a silicone hydrogel and the component includes a sealed and encapsulated multi-piece insert portion.

First claim

The invention claimed is:

1. A multi-piece insert device for an ophthalmic lens comprising:
an insert back curve piece;
an insert front curve piece;
a conductive material placed upon one or both of the insert front curve piece and the insert back curve piece;
an electronic component attached at least in part to the conductive material;
a self-locking feature including a groove on the insert front curve piece, a profile lip on the insert back curve piece configured to be pushed into the groove to fixedly hold the insert back curve piece in relative position to the insert front curve piece, thereby forming a cavity between the insert back curve piece and the insert front curve piece; and
a sealing feature provided within the groove of the insert front curve piece and in contact with the profile lip to form a seal around the cavity;
wherein the insertion of the profile lip into the groove compresses and maintains pressure on the sealing feature within the groove to form a seal around the cavity.

2. The device of claim 1 , wherein the cavity contains the electronic component.

3. The device of claim 1 , wherein the electronic component is exterior to the sealed cavity.

4. The device of claim 1 , wherein the sealing feature is preformed into a pre-selected shape.

5. The device of claim 1 , further comprising:
a sealing material which forms an adhesive seal between at least a portion of both the insert front curve piece and the insert back curve piece;
wherein the adhesive seal maintains physical contact of the profile lip to the sealing feature.

6. The device of claim 1 , further comprising:
a sealing agent on at least a portion of the electronic component.

7. The device of claim 1 , further comprising:
a sealing agent on at least a portion of the conductive material.

8. The device of claim 1 , further comprising:
a polymer layer encapsulating the device.

9. The device of claim 8 , wherein the polymer layer comprises or forms a hydrogel.

10. The device of claim 9 , further comprising:
an energization component.

11. The device of claim 10 , further comprising:
a liquid meniscus ophthalmic lens element.

12. The device of claim 8 , further comprising:
a liquid meniscus ophthalmic lens element.

13. The device of claim 1 , further comprising:
at least a first liquid within the cavity.

14. The device of claim 1 , wherein the sealing feature is an epoxy adhesive.

15. The device of claim 1 , wherein the profile lip includes a tapered portion having sloped outer walls descending from an apex to form a lip member.

16. The device of claim 15 , wherein the groove includes a slot groove portion configured to receivably engage the lip member such that when the profile lip is inserted into the groove, the lip member engages the slot groove to provide a locked engagement between the profile lip and the groove.

17. The device of claim 16 , wherein the sealing feature is an O-ring disposed within the groove.

Assignees

• Johnson & Johnson Vision Care

Inventors

• Riall James Daniel
• Pugh Randall B
• Otts Daniel B
• Flitsch Frederick A
• Toner Adam

Classifications

• G02C11/10 Primary

  Electronic devices other than hearing aids · CPC title

• G02C7/085

  Fluid-filled lenses, e.g. electro-wetting lenses · CPC title

• B29D11/00807 Primary

  Producing lenses combined with electronics, e.g. chips · CPC title

• B29K2083/00

  Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material · CPC title

• G02B2207/109

  Sols, gels, sol-gel materials · CPC title