摘要:
A core biopsy device comprises an outer cutting cannula in telescoping register with an inner spoon cannula. The outer cutting cannula is provided at a distal end with an arcuate excising blade that is biased radially inwardly to extend beyond the longitudinal axis of the cannula. The inner spoon cannula terminates at a distal end in an arcuate wall to form a biopsy sample spoon for supporting a biopsy sample thereon. The outer cutting cannula can be rotated relative to the inner spoon cannula so that the excising blade can excise the biopsy sample from the surrounding tissue. After removal of the core biopsy device from the tissue, the outer cutting cannula can be retracted away from the inner spoon cannula to reveal the biopsy sample and enable the sample to be removed from the biopsy device in a relatively undisturbed condition.
摘要:
An apparatus for percutaneously implanting a localization wire within a tissue mass, comprising: a handle with a hollow interior and an end; a cannula defining a lumen and having a distal end forming an insertion tip; a localization wire located within the lumen and having a distal end near the insertion tip when the cannula is in the insertion position; wherein the localization wire comprises at least one anchor adapted to hold the localization wire in the tissue mass; and an actuator operable between a charged condition and a discharged condition to retract the cannula to expose the localization wire to the surrounding tissue mass; wherein the handle, the cannula, the localization wire, and the actuator form a self-contained implanting apparatus for implanting the localization wire into the tissue mass, whereby the cannula is inserted into the tissue mass and the actuator is placed in the discharged condition to effect movement of the cannula relative to the localization wire and expose the distal end of the localization wire to the tissue mass.
摘要:
A marking device (10) according to one embodiment of the invention comprises a handle (14), a cannula (16) having a cannula distal end (180) and slidably mounted to the handle (14), and a stylet having a stylet distal end and slidably mounted to the handle (14) in the cannula (16). The stylet distal end is spaced proximally of the cannula distal end (180) to form a marker recess that receives an imaging marker. The marking device (10) further comprises an actuator (20) operably coupled to the cannula (16) to effect retraction of the cannula (16) into the handle (14) following implantation of the imaging marker. The imaging marker can be implanted by advancing the stylet relative to the cannula (16) to eject the imaging marker from the marker recess, or the cannula (16) can be retracted relative to the stylet to expose the imaging marker.
摘要:
A subcutaneous marking apparatus for placement of an imaging marker at a predetermined site in a tissue mass comprises a handle (20) having a front portion (22) and a rear portion (24), a cannula (120), a stylet slidably received with the cannula (120), a trigger (60) extending from the front portion (24) of the handle (20) and operably engaging the stylet, and an imaging marker disposed within a marker recess in a distal end (122) of the cannula (120). A user can firmly grasp the marking apparatus in one hand and simultaneously actuate the trigger (60) with a finger or a thumb of the same hand to move the stylet and thereby place the imaging marker at the predetermined site.
摘要:
A localizing wire (10) comprising an anchor portion (40) that can change shape from a collapsed shape to an expanded shape and thereby anchor within a tissue mass. A localizing wire (10) having an exterior portion that can lie flat against the tissue mass. A localizing wire (10) that can be repositioned or withdrawn without the need for the reinsertion of an introducer.
摘要:
The invention provides a device for percutaneously implanting an imaging marker for identifying a location within a tissue mass. The subcutaneous imaging marker comprises at least a first element and a second element, each of which have a primary imaging mode. The primary imaging mode of the first element is different from that of the second element.
摘要:
A marking apparatus for the percutaneous placement of an imaging marker (12) at a predetermined location in a tissue mass to facilitate subsequent determination of the predetermined location, the marking apparatus comprising: a handle to be grasped by a user; a cannula (20) comprising: a peripheral wall forming a lumen (22), a proximal end carried by the handle, a distal end (24) terminating in a self-piercing tip (30), and a lateral opening (28) in the peripheral wall, which is open to the lumen; a plunger (40) having a distal end and slidably received within the lumen (22) for movement between a ready position where the distal end is spaced inwardly form the self-piercing tip (30) to form a marker recess in communication with the lateral opening (28) and sized to receive an imaging marker (12), and an expelled position, where the distal end is advanced a sufficient distance into the marker recess to expel a marker (12) contained therein through the lateral opening (28).
摘要:
A localizing wire (10) comprising an anchor portion (40) that can change shape from a collapsed shape to an expanded shape and thereby anchor within a tissue mass. A localizing wire (10) having an exterior portion that can lie flat against the tissue mass. A localizing wire (10) that can be repositioned or withdrawn without the need for the reinsertion of an introducer.