Apparatus for implanting a preloaded localization wire

• US 8,886,292 B2
• Filed: 01/25/2012
• Issued: 11/11/2014
• Est. Priority Date: 11/18/2002
• Status: Active Grant

• Current Assignee: Bard Peripheral Vascular Incorporated (Becton, Dickinson & Co)
• Original Assignee: Bard Peripheral Vascular Incorporated (Becton, Dickinson & Co)
• Inventors: Chesbrough, Richard M., Field, Steven E., Goosen, Ryan L., Squires, Andrew R., Peel, Ronald B.
• Primary Examiner(s): Cattungal, Sanjay
• Assistant Examiner(s): Weatherby, Ellsworth
• Application Number:
  US13/357,872
• Publication Number:
  US 20120123255A1
• Time in Patent Office: 1,021 Days
• Field of Search: 600/423, 600/424, 600/427, 600/435
• US Class Current: 600/435
• CPC Class Codes: A61B 2090/3908 Soft tissue, e.g. breast tissue
• CPC Class Codes: A61B 2090/3925 ultrasonic
• CPC Class Codes: A61B 2090/3954 magnetic, e.g. NMR or MRI
• CPC Class Codes: A61B 2090/3966 Radiopaque markers visible in an X-ray image
• CPC Class Codes: A61B 2090/3987 Applicators for implanting markers
• CPC Class Codes: A61B 90/10 for stereotaxic surgery, e.g. frame-based stereotaxis
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers

Abstract

An apparatus for percutaneously implanting a localization wire into a tissue mass comprises a cannula with a preloaded localization wire having a distal end and at least one anchor. An actuator is in operable communication with the cannula and is configured for operation between a charged condition and a discharged condition to retract the cannula toward a retracted position to expose the distal end and the at least one anchor of the localization wire to the tissue mass, without inducing movement of the localization wire, and with the cannula being removable from the localization wire in its entirety.

Claims

1. An apparatus for percutaneously implanting a localization wire within a tissue mass, comprising:

a handle;

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 that is positioned near the insertion tip and contained within the lumen 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 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 to the tissue mass and expose each of the at least one anchor to the tissue mass, without inducing movement of the localization wire, and with the cannula being removable from the localization wire in its entirety; and

a collar mounted to the cannula, and wherein;

the actuator includes a spring; and

the handle defines a hollow interior and an end, with the cannula being slidably mounted to the end, and wherein the spring is located within the hollow interior and extends between the end and the collar, the spring being in a compressed state when the actuator is in the charged condition,

wherein the collar forms a key and the apparatus further comprises a keyway shaped to receive the key, and wherein the key is unaligned from the keyway when the actuator is in the charged condition and is aligned with the keyway when the actuator is in the discharged condition.

2. An apparatus for percutaneously implanting a localization wire within a tissue mass, comprising:

a handle that defines a hollow interior and an end;

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 that is positioned near the insertion tip and contained within the lumen 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 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 to the tissue mass and expose each of the at least one anchor to the tissue mass, without inducing movement of the localization wire, and with the cannula being removable from the localization wire in its entirety; and

a collar mounted to the cannula, the collar being configured define a key and the apparatus further comprises a keyway shaped to receive the key; and

the actuator including;

a spring located within the hollow interior of the handle, and configured to extend between the end and the collar, the spring being in a compressed state when the actuator is in the charged condition, and

a trigger coupled to the handle and coupled to the key, and configured such that actuation of the trigger aligns the key with the keyway to thereby release the spring from the compressed state to retract the cannula.

3. An apparatus for percutaneously implanting a localization wire within a tissue mass, comprising:

a handle that defines a hollow interior and an end;

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 that is positioned near the insertion tip and contained within the lumen 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 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 to the tissue mass and expose each of the at least one anchor to the tissue mass, without inducing movement of the localization wire, and with the cannula being removable from the localization wire in its entirety; and

a collar mounted to the cannula, the collar being configured define a key; and

the actuator including;

a spring located within the hollow interior of the handle, and configured to extend between the end and the collar, the spring being in a compressed state when the actuator is in the charged condition, and

a trigger coupled to the handle, the trigger having a keyway shaped to selectively receive the key, and configured such that actuation of the trigger moves the keyway into alignment with the key to thereby release the spring from the compressed state to retract the cannula.

4. 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 proximal end and a distal insertion tip, the cannula being movable relative to the handle between an insertion position and a retracted position;

a localization wire configured to extend into the lumen at the proximal end of the cannula, and the localization wire having a distal end positioned 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; and

an actuator configured to move between a charged condition and a discharged condition to effect retraction of the cannula relative to the localization wire;

wherein the handle, the cannula, the localization wire, and the actuator form a self-contained implanting apparatus configured to implant the localization wire into the tissue mass, whereby the actuator is placed in the discharged condition to effect retraction of the cannula relative to localization wire to expose the distal end of the localization wire and expose each of the at least one anchor, without inducing movement of the localization wire, and with the cannula being removable from the localization wire in its entirety,

wherein the actuator includes;

a biasing element coupled to the cannula to move the cannula from the insertion position to the retracted position;

a trigger configured to move between a ready position and a release position, and coupled to the biasing element, and configured such that movement of the trigger from the ready position to the release position releases the biasing element to move the cannula from the insertion position to the retracted position; and

a keyway and a key, wherein the biasing element is a spring that is compressed in the charged condition, and the trigger is rotatably mounted to the handle and configured such that rotation of the trigger aligns the key with the keyway to thereby release the spring from being compressed to retract the cannula.