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AssigneeSenoRx, Inc.
InventorsFred H. Burbank, Paul Lubock, Michael L. Jones, Richard L. Quick, Frank Louw, Stephen A. De Santis
Estimating the term…
The invention is directed biopsy site markers and methods of marking a biopsy site, so that the location of the biopsy cavity is readily visible by conventional imaging methods, particularly by ultrasonic imaging. The biopsy site markers of the invention have high ultrasound reflectivity, presenting a substantial acoustic signature from a small marker, so as to avoid obscuring diagnostic tissue features in subsequent imaging studies, and can be readily distinguished from biological features. The several disclosed embodiments of the biopsy site marker of the invention have a high contrast of acoustic impedance as placed in a tissue site, so as to efficiently reflect and scatter ultrasonic energy, and preferably include gas-filled internal pores. The markers may have a non-uniform surface contour to enhance the acoustic signature. The markers have a characteristic form which is recognizably artificial during medical imaging. The biopsy site marker may be accurately fixed to the biopsy site so as to resist migration from the biopsy cavity when a placement instrument is withdrawn, and when the marked tissue is subsequently moved or manipulated.
A remotely detectable marker for marking a selected intracorporeal site within a patient, comprising a sintered, ultrasound detectable body which is formed at least in part of metallic material, which has boundaries with a high contrast in acoustical impedance when the marker is placed at an intracorporeal site to facilitate ultrasound detection;
A remotely detectable marker for marking a selected intracorporeal site within a patient, comprising an ultrasound detectable body which is formed of sintered titanium, which has boundaries with a high contrast in acoustical impedance when the marker is placed at an intracorporeal site to facilitate ultrasound detection;
A remotely detectable marker for marking a selected intracorporeal site within a patient, comprising an ultrasound detectable body which is formed at least in part of porous sintered titanium, which has boundaries with a high contrast in acoustical impedance when the marker is placed at an intracorporeal site to facilitate ultrasound detection;
An intracorporeal marker delivery system, comprising:
The intracorporeal marker delivery system of claim 22 wherein the body is cylindrical in shape.
An intracorporeal marker delivery system, comprising:
Dependencies are inferred from the claim text.