Vacuum timing algorithm for biopsy device

US7938786B2 · kind B2 · utility

Assignee

• Devicor Medical Products, Inc. · US

Inventors

• Paul G. Ritchie · Loveland, US
• Trevor W. V. Speeg · Batavia, US
• John A. Hibner · Maineville, US
• William D. Dannaher · Cincinnati, US
• Shailendra K. Parihar · Mason, US
• Robert F. Weikel, Jr. · Hamilton, US

Key dates

• Filing date: Nov 20, 2007
• Grant date: May 10, 2011
• Expiry date: Sep 1, 2028

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/12
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A biopsy system has a cutter defining a cutter lumen along an axis. One conduit in the system is configured to provide fluid communication along the cutter lumen axis; while another conduit in the system is configured to provide fluid communication lateral to the cutter lumen axis. The system may be operated in a variety of modes, including a sample cycle, a clear probe cycle, a cutter positioning cycle, an aspirate cycle, and a maintenance vacuum pulse cycle. The operational modes are selectable by a user. Depending on the mode selected by the user, the communication of vacuum, saline, or atmospheric air through the conduits, or the sealing of the conduits, will vary as a function of the axial position of the cutter.