Aspiration needle with venting feature

Details Aspiration needle with venting feature Aspiration needle with venting feature

2007-04-24

2007-04-24

Hindenburg, Max (Department: 3736)

Surgery

Diagnostic testing

Sampling nonliquid body material

C600S564000, C600S573000, C604S045000

Reexamination Certificate

active

11013207

ABSTRACT:
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. In yet another feature, the needle of the present invention includes a handle that permits the appropriate mechanical usage of the needle during a normal operative procedure, with the handle portion of the needle capable of having functionality incorporated therein. The needle can also include a locking mechanism for selectively locking and restricting axial movement of the stylet relative to the first lumen.

REFERENCES:
patent: 4808157 (1989-02-01), Coombs
patent: 5012818 (1991-05-01), Joishy
patent: 2002/0087152 (2002-07-01), Mikus et al.
patent: 2003/0055373 (2003-03-01), Sramek et al.

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