Systems and methods for locating and monitoring a subcutaneous target site

A device for locating or monitoring a subcutaneous target site, the device comprising:

• a base layer configured to attach to a portion of a subject's body in proximity to the target site;
• and
• a plurality of transducer elements on the base layer, wherein the plurality of transducer elements are configured to (1) transmit a set of signals that penetrate beneath the skin of the subject and (2) receive a set of reflected signals associated with underlying anatomical structures, the underlying anatomical structures comprising the target site and bodily tissue surrounding the target site,
• wherein the set of reflected signals is used to identify a location of the target site while the device is placed in situ on the subject's body, without having to physically move the device over the portion of the subject's body to search for the target site, and
• wherein the base layer comprises one or more of an adhesive, a strap, and a conductive medium to attach the device to the subject's skin for a time period.

A device for locating or monitoring a subcutaneous target site, the device comprising:

• a base layer configured to attach to a portion of a subject's body in proximity to the target site, the base layer comprising adhesive for attaching the device to the subject's skin over a time period on the order of hours, days, weeks, or months;
• and
• a plurality of transducer elements on the base layer, wherein the plurality of transducer elements are configured to (1) transmit a set of signals that penetrate beneath the skin of the subject and (2) receive a set of reflected signals associated with underlying anatomical structures, the underlying anatomical structures comprising the target site and bodily tissue surrounding the target site,
• wherein the set of reflected signals is used to identify a location of the target site while the device is placed in situ on the subject's body, without having to physically move the device over the portion of the subject's body to search for the target site.