# US 12,766,031 B2 · Eye drop propulsion device and method

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- Number: US 12,766,031 B2
- Document ID: US12766031B2
- Status: Granted
- Kind: B2
- Application number: 19/561,379
- Filed: 2026-03-09
- Published: 2026-07-16
- Granted: 2026-10-20
- Earliest claimed: 2024-11-28
- Applicants: Andrew Peter Davis
- Inventors: Andrew Peter Davis
- Web page: https://patentgrep.com/patent/US12766031B2

## CPC

- A61F 9/0026: {Ophthalmic product dispenser attachments to facilitate positioning near the eye}
- A61F 9/0008: {Introducing ophthalmic products into the ocular cavity or retaining products therein (putting in contact lenses A61F9/0061; introducing or retaining media in cavities of the body in general A61M31/00)}
- A61F 9/0017: {implantable in, or in contact with, the eye, e.g. ocular inserts}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)

## Abstract

An eye drop propulsion device and method for propelling a drop of fluid towards an eye, including a compression chamber connected to a container configured to retain fluid, a dispenser aperture connected to the compression chamber and configured to be selectively occluded or not occluded, and a compressor configured to alter pressure in the compression chamber such that when the compressor is activated when the dispenser aperture is occluded, air is forced to flow from the compression chamber into the container, and when the compressor is deactivated, a vacuum is created in the compression chamber causing a portion of fluid in the container to flow into the compression chamber, and when the compressor is activated when the dispenser aperture is not occluded, a drop of fluid is propelled towards the eye.

## Claims

### Claim 1

A method of propelling a drop of fluid towards an eye, comprising:
connecting an eye drop bottle containing fluid to a compression chamber to allow for fluid communication between a nozzle of the eye drop bottle and the compression chamber, wherein the compression chamber is connected to a dispenser aperture configured to be selectively occluded or not occluded downstream of the compression chamber;
with the dispenser aperture occluded, activating the compression chamber to force air to flow from the compression chamber into the eye drop bottle;
with the dispenser aperture occluded, deactivating the compression chamber to cause a portion of fluid in the eye drop bottle to flow into the compression chamber; and
with the dispenser aperture not occluded, activating the compression chamber to propel a drop of fluid from the dispenser aperture towards the eye.

### Claim 2 (depends on 1)

The method of claim 1, further comprising inverting the eye drop bottle before deactivating the compression chamber with the dispenser aperture occluded.

### Claim 3 (depends on 1)

The method of claim 1, further comprising retracting a lower lid of the eye before activating the compression chamber to propel the drop of fluid from the dispenser aperture towards the eye.

### Claim 4 (depends on 1)

The method of claim 1, further comprising aligning the dispenser aperture above a lower lid of the eye before activating the compression chamber to propel the drop of fluid from the dispenser aperture towards the eye.

### Claim 5 (depends on 1)

The method of claim 1, wherein the compression chamber is configured to connect to the eye drop bottle without the use of a valve between the compression chamber and the eye drop bottle.

### Claim 6 (depends on 1)

The method of claim 1, wherein at least one of the compression chamber and dispenser aperture are sized to allow a drop of fluid to be propelled.

### Claim 7 (depends on 1)

The method of claim 1, wherein the drop of fluid is propelled towards the eye with sufficient velocity to reach the eye.

### Claim 8 (depends on 1)

The method of claim 1, further comprising selectively alleviating a vacuum within the eye drop bottle.

### Claim 9 (depends on 1)

The method of claim 1, wherein the eye drop bottle is configured to connect to the compression chamber to permit fluid communication from the compression chamber into the eye drop bottle when the compression chamber is activated.

### Claim 10 (depends on 1)

The method of claim 1, wherein the eye drop bottle is configured to connect to the compression chamber such that fluid and air communication between the eye drop bottle and the compression chamber occurs through a single passage.

### Claim 11 (depends on 1)

The method of claim 1, wherein
the dispenser aperture configured to be selectively occluded or not occluded downstream of the compression chamber via a cover, and
the dispenser aperture is occluded by the cover for the steps requiring activation and deactivation of the compression chamber.

### Claim 12 (depends on 1)

The method of claim 1, wherein the compression chamber is connected to the outside of a nozzle of the eye drop bottle to allow for fluid communication between the nozzle of the eye drop bottle and the compression chamber.