Incisional breast biopsy device
AssigneeImagyn Medical Technologies, Inc.
InventorsScott Heneveld, Mark Zyzelewski, Warren D. Lun, Mark A. Penrod
Life of this patent
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Abstract
A breast biopsy device is provided which includes a localization needle having a guide wire preloaded into the biopsy device. The device includes a stylet having a blade for transecting and separating healthy tissue on route to the biopsy site. The use of the stylet blade reduces the trauma to healthy breast tissue. The device further includes a cannula blade and a garrote for forming a cut transverse to the core cut by the cannula blade. A lockout feature prevents the garrote from deploying until after a cutting plane of the garrote has been advanced beyond the end of the guide wire.
Claims5
A method of removing suspect breast tissue with a breast biopsy device, the method comprising:
- inserting a localization needle into tissue;
- advancing a hooked guide wire out of a distal end of the localization needle to anchor the biopsy device in the tissue in or near a lesion;
- advancing a stylet having a tip containing at least one blade and cannula manually over the localization needle until the stylet is adjacent the lesion, the at least one blade being adapted to transect tissue;
- advancing a cannula blade to cut a core of tissue;
- unlocking a trigger of a garrote when a cutting plane of the garrote has been advanced past a distal end of the guide wire;
- and
- moving the trigger to activate the garrote and make a cut transverse to a direction of advancement of the cannula.
Dependencies are inferred from the claim text.