Composite ophthalmic microcannula

US8172830B2 · kind B2 · utility

Assignee

• iScience lnterventional Corporation · US

Inventors

• Jeffrey J. Christian · San Jose, US
• Stanley R. Conston · Redwood City, US
• David J. Kupiecki · San Francisco, US
• John McKenzie · Redwood City, US

Key dates

• Filing date: Mar 28, 2007
• Grant date: May 8, 2012
• Expiry date: Mar 28, 2027

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2025/0042
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Microcannulae are constructed with multiple components in a composite design, allowing the microcannulae to have varying mechanical and delivery properties that will enable ophthalmic treatments by minimally invasive means. The microcannula includes at least one flexible, tubular communicating element with an outer diameter of 350 microns or less, a proximal connector for introduction of materials, energy or tools. It may also include a reinforcing member attached to the communicating element, which may be designed to create variable stiffness along the length of the microcannula. The microcannula may also include other features such as a signal beacon near the distal tip.