Aspiration needle with venting feature
US7207950B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Dec 14, 2004 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | Apr 28, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2010/045
- WIPO fieldMedical technology
- WIPO sectorInstruments
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 lu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.