| 摘要 |
An injection-molded, low-cost unitary screw cap sealing closure for medical specimen containers has a flip-up pouring spout which may be closed down to reseal the container. The spout enables pouring dispensation of the liquid contents, and subsequent resealing. The pouring spout and its attached lid are housed in a rectangular recess in the top of the screw cap, and fit flush therewith when closed. The cap recess provides access for the entry of a finger-nail of a user, or other opening device beneath the lid edge, to pry open the spout. The spout lid is attached by way of a molded flexible "live" hinge. The pouring spout is molded to the front, underside of the lid. The lower front edge of the spout is sealed to the cap by a flexible sealing diaphragm. A small transverse bridge is in the cap recess, against which the pouring spout seals, when closed. The bridge carries a pair of latches which lockingly engage the spout sides. The spout is divided laterally into a liquid transfer portion and an adjoining small atmospheric vent tube portion, both of which passages are sealed closed when the spout is in its closed position. The spout and the free-end portion of its lid are sized to enter the mouth of a laboratory test-tube, while the cross-section of the spout liquid transfer portion permits the insertion of a urine dip-stick, an inoculation loop or a transfer pipette into the container contents.
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