A device for acquiring a tissue sample includes an outer sheath extending longitudinally from a proximal end to a distal end and including a lumen extending therethrough； an inner needle extending longitudinally from a proximal end to a distal end and sized and shaped to be slidably received within the lumen of the outer sheath to be moved between an insertion configuration and a tissue collecting configuration； and a handle assembly connected to a proximal end of the outer sheath. The handle assembly includes a first port configured to be connected to a fluid flushing source and a second port configured to be connected to a collection element so that, when the inner needle is drawn proximally relative to the outer sheath to a sample collection configuration, the sample is flushable into the collection element.
