SOFT TISSUE CORING BIOSPY DEVICES AND METHODS

摘要

An excisional device for either handheld or stereotactic table/MRI use may comprise a work element configured to rotate at a first rotation rate and comprising at least one articulable beak configured to cut tissue in a longitudinal direction. Helical elements or equivalent assemblies may be configured to transport tissue cut by a work element and may be co-axially disposed relative to the work element and may be operative to rotate at rotation rates that may be different from the work element rotation rate. Flush and vacuum tissue transport mechanisms may be incorporated in replacement of or in conjunction with helical elements. A proximal sheath and a distal sheath may be co-axially disposed relative to a work element and may be configured to rotate a work element and to actuate a beak or beaks. A simplified embodiment of this device may be applicable to field use where power sources for actuation may be limited.

主权项

1. An excisional device, comprising:
a handle portion comprising a distal end and a proximal end; a cutting assembly coupled to the distal end of the handle portion and configured to rotate, core and part-off pieces of tissue; a tissue storing magazine coupled to the proximal end of the handle portion and configured to receive and store the parted-off pieces of tissue, a transport assembly disposed at least partially within the handle portion and configured to receive the parted-off pieces of tissue and transport them toward the tissue storing magazine, wherein the cutting assembly is configured, during a single insertion thereof into tissue, to rotate, core and part-off pieces of tissue while the transport assembly transports the parted-off pieces of tissue and while the tissue storing magazine receives and stores the transported pieces of tissue.