Tissue extraction devices and methods

US8512326B2 · kind B2 · utility

Assignee

• ARQOS Surgical, Inc. · US

Inventors

• John H. Shadduck · Menlo Park, US
• Aaron Germain · Campbell, US
• Kyle Klein · San Jose, US
• Michael D. Walker · San Francisco, US
• Csaba Truckai · Saratoga, US

Key dates

• Filing date: Oct 20, 2011
• Grant date: Aug 20, 2013
• Expiry date: Oct 20, 2031

Classification

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

Abstract

Tissue may be cut and extracted from an interior location in a patient's body using a probe or tool which both effects cutting and causes vaporization of a liquid or other fluid to propel the cut tissue through an extraction lumen of the cutting device. The cutting may be achieved using an electrosurgical electrode assembly, including a first electrode on a cutting member and a second electrode within a cutting probe or tool. Thus, over a first cutting portion, radio frequency current may help cut the tissue and over a second or over transition region, the RF current may initiate vaporization of the fluid or other liquid to propel the tissue from the cutting device.