Patent ID: 6821785
Filing Date: 2004-11-23
Classification: A61B,B01L

Abstract:
A vacuum sampling tubewhich is a sampling vessel consisting of two tubular casings differing in size and each having a closed bottom and an opening at the other end as assembled together in the manner of a nest of boxes, in which 1) the inner casing of the nest of boxes is sealed gas-tight at its open end by a gas-barrier, needle hole-sealable plug, whereby a negative pressure state is kept within said casing, 2) the outer casing of the nest of boxes does not have a plug, and is substantially not in contact with an outer bottom surface of said inner casing of the nest of boxes but is detachably associated at the open end of said outer casing with an outer peripheral surface of said inner casing in the vicinity of its open end in substantially liquid-tight relation, and 3) a specimen-pretreating reagent is accommodated in a space between said inner casing and said outer casing.