Surgical blade
US6547802B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Aug 21, 2001 |
| Grant date | Apr 15, 2003 |
| Priority date | — |
| Expiry date | Aug 21, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F9/0133
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surgical blade for use in ophthalmic surgery has a multi-faceted distal end with cutting edges which meet at an angle greater than 90° and preferably 140°, resulting in a blade with a relatively large surface area. An anterior shoulder is positioned intermediate the distal and proximal ends of the blade to direct the blade to dimple down when the blade has been inserted into the cornea a sufficient distance to bring the shoulder into contact with the corneal tissue, allowing the surgeon to make a linear entry into the anterior chamber resulting in a reproducible, leak-free incision by using a straight-in hand motion. The blade is rounded at certain of its lateral edges to avoid snagging the incision when the blade is passed through the cornea.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.