An aspiration apparatus 10 is described that includes a guide 12 and a set of needles 14. Guide 12 preferably has an approximately conical shape with a decreasing diameter in the distal direction. A plurality of lumens 32 extend between a distal end portion 18 and a proximal end portion 20 of guide 12. Lumens 32 have distal openings 34 in distal end portion 18 and proximal openings in proximal end portion 20. Lumens 32 are acute and oblique to the longitudinal axis and diverge from each other and the central longitudinal axis as they extend distally from distal openings 34. Needles 14 have a tubular wall 60 and are slidingly positionable in lumens 32. Needles 14 include a longitudinal section 80 of tubular wall 60 that has a plurality of apertures 72 that decrease in size in the proximal direction. Apertures 72 define an approximately conically shaped area of harvest. Aspiration apparatus 10 can connect to an external source of reduced pressure through guide 12 or directly to each needle 14. Guide 12 can selectively include a fixed guide needle 24 that extends approximately along the longitudinal axis from distal end portion 18.
