Mary Secher Jensen

US Patent:

61819603, Jan 30, 2001

Filed:

Jan 15, 1999

Appl. No.:

9/232873

Inventors:

Mary Elizabeth Jensen - Crozet VA
Laurie L. Fajardo - Ellicott City MD

Assignee:

University of Virginia Patent Foundation

International Classification:

A61B 1700

US Classification:

600431

Abstract:

A radiographic marker is disclosed to indicate a biopsy site and entry path. The marker has an arrow shape configuration with a shaft and a pair of limbs extending from the shaft at an angle of less than about 90. degree. The tip of the arrow indicates the biopsy site and the shaft indicates the said entry path. The marker preferable is a single piece of wire, having a diameter of less than 0. 010 inches, folded to four sections, to form the limbs and shaft of the arrow. Fibers can be affixed to the shaft to cause the marker to fibrose within the tissue. An introducing device, having a body and a hub, is used to insert the marker. The introducing device body has an interior diameter dimensioned to hold the shaft of the marker. A marker pusher is dimensioned to fit within the introducing device and is used to deploy the marker into the tissue. A cannula, dimensioned to receive the body and hub of the introducing device, has a pair of receiving channels within the interior of the body to receive the limbs of the marker.