Guide for localizing a nonpalpable breast lesion
Patent 5221269 Issued on June 22, 1993. Estimated Expiration Date: 
October 15, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 15, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2022065 2047535 3330278 3516412 3890977 Self-suturing cardiac pacer lead Method for guide-wire placement and novel syringe therefor Self-actuating breast lesion probe and method of using Localization needle assembly Echogenically enhanced surgical instrument and method for production thereof InventorsAssigneeApplicationNo. 597575 filed on 10/15/1990US Classes:604/528, With means to advance or steer catheter, excluding remotely controlled devices604/170.03, Having curved portion604/264, Body inserted tubular conduit structure (e.g., needles, cannulas, nozzles, trocars, catheters, etc.)606/116Means for marking animalsExaminersPrimary: Rosenbaum, C. FredAssistant: Maglione, Corrine Attorney, Agent or FirmInternational ClassA61M 025/00AbstractA medical device for localizing a nonpalpable breast lesion. The device includes a tubular introducer needle and a wire guide positioned therein for inserting into a breast to the site of the lesion. The wire guide includes a distal portion having a preformed, resilient helical coil configuration for locking into position about the lesion. The distal portion includes a superelastic metallic alloy for maintaining the helical coil configuration after repeated extensions from and retractions into the needle passageway. The needle is inserted with the wire guide positioned therein into the breast to the site of the lesion and from the distal portion of the needle. The distal end of the needle includes a plurality of indentations for enhancing the ultrasound visualization thereof. As the distal portion of the wire guide emerges from the needle, the acuate distal end of the wire guide cuts into and scribes a helical path about the tissue distal to the lesion. The remainder of the distal portion of the wire guide follows the path scribed by the acuate distal tip and locks about the tissue distal to the lesion. Should the needle and wire guide not be appropriately positioned, the distal portion of the wire guide is retracted into the passageway of the needle to reposition the needle and guide. After desired positioning, the needle is removed with the wire guide remaining in a locked position distally about the lesion for guiding the surgeon to the lesion site during subsequent surgery.Other References
Field of SearchMeans for inserting or removing conduit within bodyMeans for marking animals Rotary cutter Body inserted tubular conduit structure (e.g., needles, cannulas, nozzles, trocars, catheters, etc.) Body piercing condit (e.g., needle, etc.) Specific structure for preventing or minimizing inconvenience casued by breakage during insertion of conduit into body Specific structure for preventing coring of body tissue | |
