US 12,144,601 B2
Impedance measuring probe and biopsy apparatus
Jordan P. Addison, Chandler, AZ (US); Scott D. Colmyer, Chandler, AZ (US); and Aseem Singh, Tempe, AZ (US)
Assigned to C. R. Bard, Inc., Franklin Lakes, NJ (US)
Appl. No. 16/763,140
Filed by C. R. Bard, Inc., Franklin Lakes, NJ (US)
PCT Filed Dec. 15, 2017, PCT No. PCT/US2017/066660
§ 371(c)(1), (2) Date May 11, 2020,
PCT Pub. No. WO2019/117943, PCT Pub. Date Jun. 20, 2019.
Prior Publication US 2020/0390363 A1, Dec. 17, 2020
Int. Cl. A61B 5/0538 (2021.01); A61B 5/00 (2006.01); A61B 10/02 (2006.01)
CPC A61B 5/0538 (2013.01) [A61B 5/6848 (2013.01); A61B 10/0233 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An impedance measuring probe for use in a biopsy apparatus, comprising:
a metal elongate member having a longitudinal axis, an outer elongate surface, a proximal end, a distal end, a proximal end portion that extends distally from the proximal end, and a distal end portion that extends proximally from the distal end, the outer elongate surface having a plurality of recessed longitudinal channels formed within a side wall of the outer elongate surface, the plurality of recessed longitudinal channels each having a radial depth extending toward the longitudinal axis that longitudinally extends from the proximal end portion into the distal end portion;
a plurality of conductive wire electrodes, each conductive wire electrode of the plurality of conductive wire electrodes having a connection end and a sensing end, each conductive wire electrode of the plurality of conductive wire electrodes located in and extending along the recessed longitudinal channel such that the recessed longitudinal channel encapsulates at least part of the conductive wire electrode between the connection end and the sensing end, the connection end extending from the proximal end portion of the metal elongate member and the sensing end being located at the distal end portion of the metal elongate member; and
a plurality of insulating coverings, each comprising an insulation material disposed in each of the recessed longitudinal channels of the metal elongate member and each circumferentially and longitudinally fully disposed about and encapsulating each conductive wire electrode of the plurality of conductive wire electrodes so as to electrically insulate each conductive wire electrode of the plurality of conductive wire electrodes, and with the sensing end of each conductive wire electrode of the plurality of conductive wire electrodes being exposed at the distal end portion of the metal elongate member.