Medication-coated patient interface device for ophthalmic laser surgery
US11744732B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2017 |
| Grant date | Sep 5, 2023 |
| Priority date | — |
| Expiry date | Aug 22, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7546
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A patient interface device for use in ophthalmic surgery, which includes a rigid body and a suction ring joined to a lower end of the body, where the suction ring includes an annular skirt made of a soft and flexible material and located at a lower end of the suction ring, and where an inner surface, and optionally an outer surface, of the skirt is coated with medication. The medication includes one or more of the following types of medication: anti-inflammatory, antibiotic, numbing, lubricating, and anti-redness. The coating method may include dip coating, sputter deposition, ultrasonic-spraying, and spin-coating. The skirt may be formed by a process that increases its material porosity and/or surface roughness, and may be surface-treated to enhance adhesion and retention of the medication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.