1. A medical device, comprising: a structure having a longitudinal dimension and a surface (102)； a volume (106) associated with the surface and extending along at least a portion of a longitudinal dimension； inanomaterials (108), enclosed in a volume and configured to respond to at least one excitation signal so that the excitation signal generates a response from nanomaterials to enable determination of the location of the structure in the object. 2. A device according to claim 1, wherein the volume (106) comprises a solid layer formed on the surface. A device according to claim 1, wherein the volume comprises a tube (202) forming an annular cavity (206) relative to the surface, wherein the annular cavity contains nanomaterials in suspension (208). A device according to claim 3, further comprising a stirring mechanism (210) in communication with the suspension (208) to prevent the deposition of nanomaterials. A device according to claim 1, wherein the volume comprises a tube (302) formed longitudinally along the surface, the tube containing nanomaterials in suspension. A system for determining the location of a medical device, the system comprising: a medical device (402), comprising nano-materials (404), the nanomaterials being configured to respond to at least one excitation signal； an excitation source (406) configured with the ability to generate at least one excitation signal for generating response radiation from nanomaterials； a sensor (408) configured to receive response radiation； imaging module (417)1. Медицинское устройство, содержащее:структуру, имеющую продольный размер и поверхность (102)；объем (106), ассоциированный с поверхностью и продолжающийся вдоль, по меньшей мере, участка продольного размера； инаноматериалы (108), заключенные в объеме и сконфигурированные с возможностью реагирования на, по меньшей мере, один сигнал возбуждения так, что сигнал возбуждения генерирует отклик от наноматериалов для создания возможности определения местоположения с
