Heat tunable intraocular lens

Patent metadata

Field	Value
Publication number	US-10159566-B2
Application number	US-201615275625-A
Country	US
Kind code	B2
Filing date	Sep 26, 2016
Priority date	Sep 26, 2016
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

A method and system provide an ophthalmic lens including a lens body having a chamber therein, a reservoir module coupled with the lens body and an optical fluid. At least part of the lens body is flexible. The reservoir module includes a reservoir and a heat sensitive portion bordering the reservoir. The reservoir has a reservoir volume and is fluidically connected with the chamber. The heat sensitive portion has a shape responsive to a temperature of at least forty five degrees Celsius such that the reservoir volume changes in response to at least part of the heat sensitive portion reaching the temperature. The optical fluid resides in the chamber and the reservoir. A change in the reservoir volume flows a portion of the optical fluid between the reservoir and the chamber such that the flexible portion of the lens body undergoes a shape change corresponding to a base power change.

First claim

We claim:

1. An ophthalmic lens comprising:
a lens body having a chamber therein, at least a portion of the lens body being flexible, the lens body having a lens body index of refraction;
a reservoir coupled with the lens body and defining a reservoir volume that is fluidically connected with the chamber of the lens body, the reservoir comprising a plurality of heat sensitive structures that change shape from a first shape to a second shape responsive to a temperature of at least forty five degrees Celsius, wherein:
a first portion of the plurality of heat sensitive structures have a first orientation such that the change from the first shape to the second shape increases the reservoir volume; and
a second portion of the plurality of heat sensitive structures have a second orientation such that the change from the first shape to the second shape decreases the reservoir volume; and

an optical fluid residing in the chamber and the reservoir, the optical fluid having an optical fluid index of refraction, a change in the reservoir volume flowing a portion of the optical fluid between the reservoir and the chamber such that the at least the portion of the lens body undergoes a shape change corresponding to a base power change, the optical fluid index of refraction being within 0.1 of the lens body index of refraction.

2. The ophthalmic lens of claim 1 wherein each of the plurality of heat sensitive structures has a volume.

3. The ophthalmic lens of claim 2 wherein the volume of each of the plurality of heat sensitive structures is the same.

4. The ophthalmic lens of claim 3 wherein the volume corresponds to a base power change of not more than 0.25 diopter.

5. The ophthalmic lens of claim 1 further comprising:
a microfluidics path for fluidically connecting the reservoir with the chamber.

6. The ophthalmic lens of claim 1 wherein the temperature is at least sixty degrees Celsius and not more than one hundred degrees Celsius.

7. The ophthalmic lens of claim 6 wherein the temperature is at least ninety degrees Celsius.

8. The ophthalmic lens of claim 1 wherein the lens body has a periphery, the reservoir being coupled with the lens body at the periphery.

9. The ophthalmic lens of claim 1 wherein each of the plurality of heat structures comprises a tube.

10. The ophthalmic lens of claim 1 wherein the at least the portion of the lens body includes a flexible membrane and a second portion of the lens body being fixed.

11. The ophthalmic lens of claim 1 wherein at least a portion of each of the plurality of heat sensitive structures comprises a shape memory polymer having a glass transition not less than the temperature.

12. The ophthalmic lens of claim 11 wherein the shape memory polymer comprises an additive that absorbs light in a selected wavelength range.

Assignees

• Novartis Ag

Inventors

• Hadba Ahmad
• Ribeiro Ramiro
• Schlueter Douglas
• Ackermann Marcel
• Scheibler Lukas
• Troller Stefan

Classifications

• A61F2/1618

  Multifocal lenses · CPC title

• A61F2210/0061

  swellable · CPC title

• A61F2250/0009

  for adjusting thickness · CPC title

• A61F2/1627

  for changing index of refraction, e.g. by external means or by tilting · CPC title

• A61F2210/0014

  using shape memory or superelastic materials, e.g. nitinol · CPC title