| 摘要 |
An aspirating needle for collecting a specimen including an elongated hollow body that includes a first lumen portion and a second lumen portion. The first lumen portion is open at both ends for placement at a specimen site to collect and permit aspiration of the specimen from the specimen site. The second lumen has first and second vent ports, with the second vent port being formed along the elongated body such that that when the needle is placed at the specimen site, the second vent port is positioned at the specimen site. The first vent port is in fluid communication with atmospheric air when the needle is positioned at the specimen site so as to permit pressure within the specimen site to equilibrate with atmospheric pressure by means of the venting action of the second lumen.
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