Claims
- 1. A biopsy device, comprising:cannula having a shaft; a retractable stylet having a tip containing at least one blade and a central passage; a localization needle disposed within the central passage; a drive mechanism for simultaneously rotating said cannula and moving said cannula in a direction parallel to a longitudinal axis of said cannula; a garrote coupled to the cannula and being adapted to perform a cut traverse to said longitudinal axis of said cannula; a trigger for deploying said garrote and for preventing deployment of said garrote prior to movement of said cannula a predetermined distance; and, a spring mounted around said drive mechanism for applying resistance against said garrote.
- 2. A biopsy device, comprising:cannula having a shaft and a cutting ring; a retractable stylet having a tip containing at least one blade and a central passage; a localization needle disposed within the central passage; a drive mechanism for simultaneously rotating said cannula and moving said cannula in a direction parallel to a longitudinal axis of said cannula; a garrote coupled to-the cannula adjacent the cutting ring and being adapted to perform a cut traverse to said longitudinal axis of said cannula; a trigger for deploying said garrote and for preventing deployment of said garrote prior to movement of said cannula a predetermined distance; and, a pair of disk blades mounted to the cannula.
- 3. A biopsy device, comprising:a cannula having a shaft and a cutting ring; a retractable stylet having a tip containing at least one blade and a central passage; a localization needle disposed within the central passage; a drive mechanism for simultaneously rotating said cannula and moving said cannula in a direction parallel to a longitudinal axis of said cannula; a garrote coupled to the cannula adjacent the cutting ring and being adapted to perform a cut traverse to said longitudinal axis of said cannula; a trigger for deploying said garrote and for preventing deployment of said garrote prior to movement of said cannula a predetermined distance; and, a distal disk blade and a proximal disk blade, the proximal disk blade containing a notch for receiving said garrote as the garrote exits the cannula to form a cutting surface.
- 4. The biopsy device, as set forth in claim 3, wherein the trigger includes a locking mechanism having a locked position and an unlocked position, wherein the trigger abuts a plurality of ramps that are depressed by a lock depressor during advancement of said cannula when the locking mechanism is in the locked position.
- 5. The biopsy device, as set forth in claim 4, wherein the trigger can be retracted to deploy the garrote when the locking mechanism is in the unlocked position.
- 6. A biopsy device, comprising:a cannula having a shaft; a retractable stylet having a tip containing at least one blade and a central passage; a localization needle disposed within the central passage; a drive mechanism for simultaneously rotating said cannula and moving said cannula in a direction parallel to a longitudinal axis of said cannula; a garrote coupled to the cannula and being adapted to perform a cut traverse to said longitudinal axis of said cannula; a trigger for deploying said garrote and for preventing deployment of said garrote prior to movement of said cannula a predetermined distance; a localization needle having a guide wire mounted within said needle, wherein the trigger includes a locking mechanism for preventing deployment of the garrote until a cutting plane of the garrote is beyond an end of said guide wire.
- 7. The biopsy device, as set forth in claim 6, wherein the guide wire includes a barb for anchoring one end of said guide wire in a tissue sample.
- 8. A biopsy device, comprising:a cannula having a shaft; a retractable stylet having a tip containing at least one blade and a central passage; a localization needle disposed within the central passage; a drive mechanism for simultaneously rotating said cannula and moving said cannula in a direction parallel to a longitudinal axis of said cannula; a garrote coupled to the cannula and being adapted to perform a cut traverse to said longitudinal axis of said cannula; a trigger for deploying said garrote and for preventing deployment of said garrote prior to movement of said cannula a predetermined distance; a trigger plunger coupled to the trigger, one end of the garrote being connected to the trigger plunger; and a spring plunger coupled to the trigger plunger via a spring, another end of the garrote being connected to the spring plunger.
- 9. The biopsy device, as set forth in claim 8, wherein the trigger includes a locking mechanism having a locked position and an unlocked position, wherein the trigger abuts a plurality of ramps that are depressed by a lock depressor during advancement of said cannula when the locking mechanism is in the locked position.
- 10. A biopsy device, comprising:a cannula having a shaft and at least one disk blade mounted within the shaft; a retractable stylet having a tip containing at least one blade and a central passage; a drive mechanism for advancing the cannula in a direction parallel to a longitudinal axis of the cannula; a garrote coupled to the cannula, the garrote and the disk blade being adapted to perform a cut traverse to said longitudinal axis of said cannula; a trigger plunger connected to one end of the garrote; and, a spring plunger coupled to the trigger plunger via a spring, another end of the garrote being connected to the spring plunger.
Priority Claims (1)
Number |
Date |
Country |
Kind |
PCT/US98/18172 |
Sep 1998 |
US |
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Parent Case Info
This application is a continuation in part application of U.S. patent application Ser. No. 09/692,928 filed Oct. 20, 2000, now U.S. Pat. No. 6,383,145, which is a Continuation in Part Application of U.S. patent application Ser. No. 09/542,623 filed Apr. 04, 2000, now U.S. Pat. 6,267,732, which was a Continuation Application of patent application Ser. No. 09/151,439 filed Sep. 11, 1998, now U.S. Pat. No. 6,080,113 which claims benefit of U.S. Provisional Patent Application 60/058,691 filed Sep. 12, 1997.
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Provisional Applications (1)
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60/058691 |
Sep 1997 |
US |
Continuations (1)
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Number |
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Parent |
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Child |
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Continuation in Parts (2)
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Number |
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Parent |
09/692928 |
Oct 2000 |
US |
Child |
09/776444 |
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US |
Parent |
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Apr 2000 |
US |
Child |
09/692928 |
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