Bernoulli gripper for intraocular and contact lenses

Patent metadata

Field	Value
Publication number	US-11284994-B2
Application number	US-201816174429-A
Country	US
Kind code	B2
Filing date	Oct 30, 2018
Priority date	Nov 1, 2017
Publication date	Mar 29, 2022
Grant date	Mar 29, 2022

Abstract

A Bernoulli gripper for ophthalmic lenses includes a gripper body with a first cavity corresponding in shape to an optic zone of an ophthalmic lens and a first channel formed within the gripper body. The first channel penetrates the first cavity at one end and includes a first port in the gripper body at another end of the first channel. The first channel is enabled to supply a fluid medium from the first port to the first cavity at a first velocity such that the ophthalmic lens positioned with the optic zone in proximity to the first cavity is subject to a first pressure force against the first cavity by the Bernoulli effect.

First claim

The invention claimed is:

1. A Bernoulli gripper for ophthalmic lenses, the Bernoulli gripper comprising:
a gripper body with a first cavity corresponding in shape to an optic zone of an ophthalmic lens;
a first channel formed within the gripper body, the first channel penetrating the first cavity at one end and comprising a first port in the gripper body at another end of the first channel; and
a second channel formed within the gripper body, the second channel penetrating the gripper body at one end and comprising a second port in the gripper body at another end of the second channel,
wherein the first channel is enabled to supply a first fluid medium from the first port to the first cavity at a first velocity such that the ophthalmic lens positioned with the optic zone in proximity to the first cavity is subject to a first pressure force against the first cavity by a Bernoulli effect, and
wherein the second channel is enabled to flow a second fluid medium between the second port and where the second channel penetrates the gripper body such that at least a portion of the ophthalmic lens positioned in proximity to the second channel is subject to a second force different from the first pressure force.

2. The Bernoulli gripper of claim 1 , wherein the first pressure force is sufficient to grip the ophthalmic lens at the first cavity to enable positioning of the ophthalmic lens when the gripper body is correspondingly positioned.

3. The Bernoulli gripper of claim 1 , wherein the first cavity is enabled to grip the ophthalmic lens without the optic zone contacting the first cavity when the first pressure force acts against the first cavity.

4. The Bernoulli gripper of claim 1 , wherein the first channel is enabled to supply the first fluid medium when the first fluid medium is electrostatically charged.

5. The Bernoulli gripper of claim 1 , wherein the first fluid medium is air.

6. The Bernoulli gripper of claim 1 , wherein the ophthalmic lens is an intraocular lens comprising the optic zone and a haptic, and further comprising a mechanical stop to detain the haptic and prevent rotation of the ophthalmic lens, wherein the at least the portion of the ophthalmic lens comprises the haptic.

7. The Bernoulli gripper of claim 6 , wherein the mechanical stop further comprises a second cavity correspondingly formed to receive a distal portion of the haptic, wherein:
the second channel penetrates the second cavity at the one end,
wherein the second channel is enabled to supply the second fluid medium from the second port to the second cavity at a second velocity such that the haptic positioned in proximity to the second cavity is subject to the second force against the second cavity by the Bernoulli effect, wherein the second force comprises a second pressure force.

8. The Bernoulli gripper of claim 6 , wherein the second channel penetrates the mechanical stop at the one end, and further comprising a third port where the second channel penetrates the mechanical stop, wherein the third port is a vacuum port for applying the second force to the haptic when the haptic is detained by the mechanical stop, wherein the second force comprises underpressure.

9. The Bernoulli gripper of claim 1 , wherein:
the first channel penetrates the first cavity at a center portion of the first cavity, and
the second channel penetrates an edge portion of the first cavity at the one end,
wherein the second channel is enabled to supply the second fluid medium from the second port to the edge portion of the first cavity at a second velocity such that the ophthalmic lens positioned with the optic zone in proximity to the first cavity is subject to the second force laterally within the first cavity by the Bernoulli effect, wherein the second force comprises a second pressure force.

10. The Bernoulli gripper of claim 1 , wherein:
the ophthalmic lens is an intraocular lens comprising the optic zone and a haptic, and further comprising a third port where the second channel penetrates the gripper body, wherein the third port is a vacuum port for applying the second force to the haptic when the optic zone is detained in the first cavity, wherein the second force comprises underpressure.

11. A method for gripping ophthalmic lenses, the method comprising:
placing a gripper body in proximity to an ophthalmic lens, the gripper body having:
a first cavity corresponding in shape to an optic zone of the ophthalmic lens;
a first channel formed within the gripper body, the first channel penetrating the first cavity at one end and comprising a first port in the gripper body at another end of the first channel; and
a second channel formed within the gripper body, the second channel penetrating the gripper body at one end and comprising a second port at another end of the second channel; and

supplying a first fluid medium from the first port through the first channel to the first cavity at a first velocity such that the ophthalmic lens positioned with the optic zone in proximity to the first cavity is subject to a first pressure force against the first cavity by a Bernoulli effect; and
flowing a second fluid medium through the second channel between the second port and where the second channel penetrates the gripper body such that at least a portion of the ophthalmic lens positioned in proximity to the second channel is subject to a second force different from the first pressure force.

12. The method of claim 11 , wherein the first pressure force is sufficient to grip the ophthalmic lens at the first cavity to enable positioning of the ophthalmic lens when the gripper body is correspondingly positioned, and further comprising:
positioning the gripper body by moving the gripper body; and
discontinuing supplying the first fluid medium to the first cavity, wherein the ophthalmic lens is released from the gripper body.

13. The method of claim 11 , wherein supplying the first fluid medium further comprises gripping the ophthalmic lens without the optic zone contacting the first cavity when the first pressure force acts against the first cavity.

14. The method of claim 11 , wherein the first fluid medium is air.

15. The method of claim 11 , wherein the ophthalmic lens is an intraocular lens comprising the optic zone and a haptic, and further comprising detaining the haptic using a mechanical stop formed within the gripper body to prevent rotation of the ophthalmic lens, wherein the at least the portion of the ophthalmic lens comprises the haptic.

16. The method of claim 15 , wherein the mechanical stop further comprises a second cavity correspondingly formed to receive a distal portion of the haptic, and further comprising:
placing the distal portion of the haptic in proximity to the second cavity, wherein the second channel penetrates the second cavity at the one end; and
supplying the second fluid medium from the second port to the second cavity at a second velocity such that the distal portion of the haptic positioned in proximity to the second cavity is subject to the second force against the second cavity by the Bernoulli effect, wherein the second force comprises a second pressure force.

17. The method of claim 15 , wherein the second channel penetrates the mechanical stop at the one end, wherein the gripper body has a third port where the second channel penetrates the mechanical stop, wherein the third port is a vacuum port for applying the second force to the haptic when the haptic is detained by the mechanical stop, wherein the second force comprises underpressure, and further comprising:
applying the under

Assignees

• Alcon Inc

Inventors

• Huehn Dominik
• Koehler Jochen

Classifications

• B29D11/023

  Implants for natural eyes · CPC title

• A61F2/1664 Primary

  for manual insertion during surgery, e.g. forceps-like instruments · CPC title

• A61F2/16 Primary

  Intraocular lenses · CPC title

• B29D11/0024

  using a vacuum suction gripper · CPC title

• B65G47/911

  with air blasts producing partial vacuum · CPC title