Tissue extraction devices and methods

US8974448B2 · kind B2 · utility

Assignee

• IOGYN, INC. · US

Inventors

• Aaron Germain · Campbell, US
• Kyle Klein · San Jose, US
• Benedek Orczy-Timko · Budapest, HU
• Michael D. Walker · San Francisco, US
• John H. Shadduck · Menlo Park, US
• Csaba Truckai · Saratoga, US
• Balazs Lesko · Budapest, HU

Key dates

• Filing date: Jun 22, 2012
• Grant date: Mar 10, 2015
• Expiry date: May 20, 2033

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2218/007
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The tissue cutting device comprises an elongated assembly including both an outer sleeve and an inner sleeve. The outer sleeve has a tissue-receiving window, and the inner sleeve has a distal end which cuts tissue as the inner sleeve is advanced past the window. The tissue is received into a lumen of the inner sleeve, and the inner sleeve lumen is typically enlarged in a proximal direction to reduce the tendency of resected tissue to lodge therein. The tissue displacement member is optionally provided at a distal end of the outer sleeve to further aid in dislodging tissue which becomes captured in a distal end of the inner sleeve of the lumen.