Patent ID: 6464648
Filing Date: 2002-10-15
Classification: A61B

Abstract:
A biopsy device, comprising:a housing having a shape of a container, said housing having an opening on a first side thereof; a cannula; a biopsy needle, wherein said biopsy needle is inserted into said cannula, wherein said cannula and said biopsy needle are received within said housing such that said cannula and said biopsy needle are vertically movable within said housing; a first hook, wherein said first hook is in engagement with said biopsy needle; a first spring, wherein said first spring urges said biopsy needle downward; a second hook, wherein said second hook is in engagement with said cannula; and a second spring, wherein said second spring urges said cannula downward; wherein said first hook and said second hook are located within said housing, and further wherein said first hook releases said biopsy needle and said second hook releases said cannula causing said biopsy needle to protrude downward prior to said cannula protruding downward, wherein said biopsy needle is spaced apart from said first spring and said cannula is spaced apart from said second spring by a predetermined distance in a direction perpendicular to a plane of radiation, wherein said biopsy needle and said cannula are displayed on an image screen without overlapping said first spring and said second spring.