METHOD AND DEVICE FOR TRANSFERRING BIOLOGIC FLUID SAMPLES

摘要

A biologic fluid sample transfer device (10) and method is provided. The device includes an outer casing (12) and a lance (14). The outer casing has a tip (18) with an exterior surface and a bore (26) extending lengthwise through the tip and out to the exterior surface of the tip to form an aperture (30) in the exterior surface. The lance has a length extending between an operating end (32) and a sample end (34). The lance includes a seal segment (38) contiguous with the sample end. The seal segment extends a distance lengthwise and has a constant cross-sectional geometry. The transfer device is selectively disposable in an empty volume position and a sample volume position by relative lengthwise movement between the outer casing and the lance. In the empty volume position, the sample end extends outside of the- aperture. In the sample volume position, the sample end of the lance is disposed within the bore a distance away from the aperture. The seal segment of the lance forms an interference fit with the bore, which interference fit is operable to create a seal between the seal segment and the bore.