Apparatus for implanting a preloaded localization wire
First Claim
1. An apparatus for percutaneously implanting a localization wire within a tissue mass, comprising:
- a handle having a grip portion and a base, the grip portion slidably mounted to the base, the base having a keyway;
a cannula mounted to the handle, the cannula defining a lumen and having a distal end forming an insertion tip, the cannula being movable relative to the handle between an insertion position and a retracted position;
a localization wire positioned to extend from the handle and into the lumen of the cannula, the localization wire having a distal end;
an actuator coupled to the cannula and configured to operate between a charged condition and a discharged condition to retract the cannula toward the retracted position to expose the distal end of the localization wire; and
a collar mounted to the cannula, the collar including a key having a key projection, and the keyway of the base configured to selectively receive the key projection, and configured such that the key projection is not aligned with the keyway when the actuator is in the charged condition and the key projection is aligned with the keyway in an aligned condition to facilitate retraction of the cannula toward the retracted position to effect the discharged condition.
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Abstract
An apparatus for percutaneously implanting a localization wire into a tissue mass includes a handle having a grip portion and a base. The grip portion is slidably mounted to the base. The base has a keyway. A cannula is movable relative to the handle between an insertion position and a retracted position. A localization wire is positioned to extend from the handle and into the cannula lumen. An actuator is coupled to the cannula and is configured to operate between a charged condition and a discharged condition to retract the cannula. A collar is mounted to the cannula. The collar includes a key having a key projection. The key projection is not aligned with the keyway when the actuator is in the charged condition and the key projection is aligned with the keyway to facilitate retraction of the cannula toward the retracted position to effect the discharged condition.
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Citations
19 Claims
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1. An apparatus for percutaneously implanting a localization wire within a tissue mass, comprising:
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a handle having a grip portion and a base, the grip portion slidably mounted to the base, the base having a keyway; a cannula mounted to the handle, the cannula defining a lumen and having a distal end forming an insertion tip, the cannula being movable relative to the handle between an insertion position and a retracted position; a localization wire positioned to extend from the handle and into the lumen of the cannula, the localization wire having a distal end; an actuator coupled to the cannula and configured to operate between a charged condition and a discharged condition to retract the cannula toward the retracted position to expose the distal end of the localization wire; and a collar mounted to the cannula, the collar including a key having a key projection, and the keyway of the base configured to selectively receive the key projection, and configured such that the key projection is not aligned with the keyway when the actuator is in the charged condition and the key projection is aligned with the keyway in an aligned condition to facilitate retraction of the cannula toward the retracted position to effect the discharged condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 17)
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11. An apparatus for percutaneously implanting a localization wire within a tissue mass, comprising:
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a handle having a grip portion and a base, the grip portion slidably mounted to the base, the base having a keyway; a cannula defining a lumen and having a distal insertion tip, the cannula being movable relative to the handle between an insertion position and a retracted position; a localization wire located within the lumen and having a distal end near the distal 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, the cannula and the localization wire being configured such that each of the at least one anchor remains completely contained in the cannula when the cannula is in the insertion position prior to the cannula being moved to the retracted position; an actuator operable between a charged condition and a discharged condition to effect retraction of the cannula relative to the localization wire so as to expose the distal end of the localization wire to the tissue mass and so as to expose each of the at least one anchor to the tissue mass; and a collar mounted to the cannula, the collar including a key having a key projection, and the keyway of the base configured to selectively receive the key projection, and configured such that the key projection is not aligned with the keyway when the actuator is in the charged condition and the key projection is aligned with the keyway in an aligned condition to facilitate retraction of the cannula toward the retracted position to effect the discharged condition. - View Dependent Claims (12, 13, 14, 15, 16, 18)
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19. An apparatus for percutaneously implanting a localization wire within a tissue mass, comprising:
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a handle having a grip portion and a base, the grip portion slidably mounted to the base, the base having a keyway; a cannula slidably mounted to the handle, the cannula having a proximal end and a distal end, and defining a lumen, the distal end forming an insertion tip, the cannula being movable relative to the handle between an insertion position and a retracted position; a localization wire positioned to extend distally from a proximal end of the base of the handle and into the lumen at the proximal end of the cannula, the localization wire having a distal end; an actuator coupled to the cannula and configured to operate between a charged condition and a discharged condition to retract the cannula toward the retracted position to expose the distal end of the localization wire; and a collar mounted to the proximal end of the cannula, the localization wire extending through the collar, the collar including a key having a key projection, and the keyway of the base configured to selectively receive the key projection, and configured such that the key projection is not aligned with the keyway when the actuator is in the charged condition and the key projection is aligned with the keyway in an aligned condition to facilitate retraction of the cannula toward the retracted position to effect the discharged condition.
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Specification