Patent ID: 8123699

Claim:
A needle for aspiration that comprises: an elongate tubular needle that includes a distal end portion and a proximal end portion, the distal end portion and proximal end portion define a longitudinal axis, the needle has a tubular sidewall and the distal end portion includes a solid distal tip; a lumen aligned with the longitudinal axis, the lumen defined by the sidewall and includes a distal terminal end in proximity to the distal tip and an opposed proximal aperture, the proximal aperture adapted to be coupled with an external source of reduced pressure; a plurality of apertures defined in the sidewall, each aperture of the plurality of apertures has a defined area in the sidewall that is in fluid communication with the lumen; an arrangement of the plurality of apertures, each aperture of the plurality of apertures has a defined location in the sidewall and an angular orientation that defines the angular orientation of a harvest volume for each aperture, the arrangement includes varying the spacing between the locations of the apertures, the spacing between the location of each aperture of the plurality of apertures selectively expanded and reduced to adjust the flow rate of a portion of the plurality of apertures in defined directions, a first portion of the arrangement that includes a first spacing between the locations of the apertures and a second portion of the arrangement that includes a second spacing between the locations of the apertures, the second spacing larger than the first spacing, the angle of each aperture varying relative to other apertures to minimize the overlap of flow between apertures, the arrangement and the spacing between the locations of the apertures of the plurality of apertures arranged to minimize harvest volume overlap between the apertures, the plurality of apertures adapted for an application of the needle for the harvesting of bone marrow from a defined location in a bone.