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US 11,690,679 B2Granted
Localization systems and methods of use
AssigneeCovidien LP
InventorScott E. M. Frushour
Life of this patent
Estimating the term…
Abstract
A method for localizing a nodule of a patient includes inserting a delivery tool into tissue of a patient, such as lung tissue, releasing the magnetic fiducial into or adjacent a nodule from the delivery tool, and locating the magnetic fiducial with a localization tool.
Claims10
A method for localizing a nodule of a patient, comprising:
- inserting a delivery tool into a patient, the delivery tool defining a longitudinally-extending passageway and carrying a magnetic fiducial disposed within a distal section of the longitudinally-extending passageway and a permanent magnet axially restrained within a proximal section of the longitudinally-extending passageway;
- maintaining, during insertion of the delivery tool into the patient, the magnetic fiducial within the distal section of the longitudinally-extending passageway via a magnetic attraction between the permanent magnet and the magnetic fiducial marker;
- advancing a pusher rod distally through the delivery tool and relative to the permanent magnet to exert a threshold, distally-oriented force on the magnetic fiducial to overcome the magnetic attraction between the permanent magnet and the magnetic fiducial, thereby deploying the magnetic fiducial from the delivery tool to embed the magnetic fiducial in a nodule;
- and
- locating the magnetic fiducial with a localization tool.
2 more elements
A localization system, comprising:
- a magnetic fiducial including at least one fixation element configured to embed the magnetic fiducial in tissue;
- a delivery tool configured to deploy the magnetic fiducial therefrom, the delivery tool including:
- a housing defining a longitudinally-extending passageway having a proximal section and a distal section, wherein the magnetic fiducial is removably disposed within the distal section of the longitudinally-extending passageway;
- a permanent magnet axially restrained within the proximal section of the longitudinally-extending passageway, wherein a magnetic attraction between the permanent magnet and the magnetic fiducial maintains the magnetic fiducial within the distal section of the longitudinally-extending passageway during insertion of the delivery tool into the patient;
- and
- a pusher rod axially movable through the delivery tool relative to the permanent magnet and configured to exert a threshold, distally-oriented force on the magnetic fiducial to overcome the magnetic attraction between the permanent magnet and the magnetic fiducial, thereby deploying the magnetic fiducial from the delivery tool;
- and
- a localization tool having a magnetic portion configured to attract the magnetic fiducial.
5 more elements
Dependencies are inferred from the claim text.