Devices and methods for tissue modification

US8192435B2 · kind B2 · utility

Assignee

• Baxano, Inc. · US

Inventors

• Jeffery L. Bleich · Palo Alto, US
• Edwin J. Hlavka · Minneapolis, US
• Vahid Saadat · Redwood Shores, US
• Steven A. Spisak · San Jose, US
• David Miller · Morgan, US
• James R. Yurchenco · Palo Alto, US

Key dates

• Filing date: Oct 15, 2005
• Grant date: Jun 5, 2012
• Expiry date: Jan 4, 2027

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N1/36017
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Methods and apparatus are provided for selective surgical removal of tissue, e.g., for enlargement of diseased spinal structures. The current invention includes specific tools that enable safe tissue modification in epidural space, including a barrier that separates the area where tissue modification will take place from adjacent vulnerable neural and vascular structures. In one variation, a tissue abrasion device is provided including a thin belt or ribbon with an abrasive cutting surface. The device optionally may be placed within a protective sheath that exposes the abrasive surface of the ribbon only in the area where tissue removal is desired.