US 11,911,144 B2
Ultrasound imaging system and interventional medical device for use therewith
Katherine A. Huffer, Chandler, AZ (US); Bryon E. Pelzek, Gold Canyon, AZ (US); and Ranjani Sampath Kumaran, Tempe, AZ (US)
Assigned to C. R. Bard, Inc., Franklin Lakes, NJ (US)
Filed by C. R. Bard, Inc., Franklin Lakes, NJ (US)
Filed on Feb. 26, 2020, as Appl. No. 16/801,835.
Application 16/801,835 is a continuation in part of application No. 16/638,326, abandoned, previously published as PCT/US2017/047898, filed on Aug. 22, 2017.
Prior Publication US 2020/0187826 A1, Jun. 18, 2020
Int. Cl. A61B 5/06 (2006.01); A61B 5/00 (2006.01); A61B 34/20 (2016.01)
CPC A61B 5/066 (2013.01) [A61B 5/0013 (2013.01); A61B 5/0022 (2013.01); A61B 5/062 (2013.01); A61B 34/20 (2016.02); A61B 2034/2063 (2016.02)] 18 Claims
OG exemplary drawing
 
1. An imaging system,
comprising: an ultrasound probe comprising an ultrasound probe housing that includes an ultrasound transducer configured to generate an ultrasound field-of-view, a volume of the ultrasound field-of-view having a f first Z-axis defined on a first centroid of the ultrasound transducer, a tracking field generator to generate an electromagnetic locator field having a volume that is greater than the volume of the ultrasound field-of-view, and a wireless receiver, the tracking field generator configured to generate an electromagnetic locator field volume, wherein the tracking field generator comprises a plurality of electromagnetic coils including a first coil having a first axis parallel to an X-axis that is perpendicular to the first Z-axis, a second coil having a second axis parallel to a Y-axis that is perpendicular to the X-axis and the first Z-axis, and a third coil having a third axis that is parallel to the first Z-axis, such as that each of the first axis, the second axis, and the third axis correspond to a Cartesian coordinate system, the plurality of electromagnetic coils are positioned within a common plane that is parallel to a plane of the ultrasound transducer, wherein the plurality of electromagnetic coils surrounds the ultrasound transducer, each of the plurality of electromagnetic coils contained within the ultrasound probe housing, a second centroid of the plurality of electromagnetic coils collectively define a second Z-axis of the electromagnetic locator field volume, the ultrasound transducer and the plurality of electromagnetic coils are arranged within the ultrasound probe housing to facilitate an entirety of the ultrasound field-of-view located within the electromagnetic locator field and to coincide the first Z-axis of the volume of the ultrasound field-of-view with the second z-axis of the electromagnetic locator field volume during calibration of the ultrasound probe;
an interventional medical device having a distal end portion;
a tracking device mechanically coupled to the distal end portion of the interventional medical device, the tracking device including:
a plurality of tracking coils to interact with the electromagnetic locator field to determine a location within the electromagnetic locator field volume and to generate tracking data,
a wireless transmitter configured to transmit the tracking data from the tracking device of the interventional medical device to the wireless receiver of the ultrasound probe, and
a power supply circuit configured to supply electrical power to the wireless transmitter of the tracking device.