Dual action aspiration biopsy needle
Номер патента: WO2004026142B1
Опубликовано: 29-04-2004
Автор(ы): John S Fisher
Принадлежит: Biopsy Sciences LLC
Опубликовано: 29-04-2004
Автор(ы): John S Fisher
Принадлежит: Biopsy Sciences LLC
Реферат: A dual action biopsy needle (10) scrapes tissue of cellular thickness from a lesion during forward and rearward reciprocations of the needle along its longitudinal axis of symmetry. A first sharp edge (14), formed by a beveled distal end of the needle, scrapes tissue from a lesion (30) during proximal-to-distal travel of the needle. A second sharp edge (20) is provided by a transversely disposed slot (18) formed in the needle near the first sharp edge. The second sharp edge scrapes tissue during distal-to-proximal travel of the needle. In various embodiments, the second sharp edge is coincident with, elevated with respect to the to, or recessed with respect to an exterior surface of the needle. Additional embodiments include a second slot (18a), a channel (21), and a hinge (22) for enabling pivotal movement of the second and third sharp edges.
Dual action aspiration biopsy needle
Номер патента: CA2499993C. Автор: John S. Fisher. Владелец: Medical Device Technologies Inc. Дата публикации: 2013-08-06.