Needle guide with centering for septum piercing
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United States of America Patent
Stats
-
Jun 27, 2017
Grant Date -
May 4, 2017
app pub date -
Oct 27, 2016
filing date -
Oct 28, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A pipetting device (2) for removing fluid from a sample vessel (52) includes a pipetting needle (4) and an auxiliary cannula (18) for piercing a septum, designed to guide the pipetting needle axially through the auxiliary cannula. The pipetting device has a guide arm (6), on the lower end (10) of which is arranged an end plate (12) that is axially displaceable along the guide arm against a resilient resistance. A centering device (14) inserts into the end plate of the guide arm, and at least three centering fingers (26) with conical bevels (34) are constructed on the radial outside of the centering device, distributed around the circumference thereof, and forming a holding-down device for the sample vessel. The disclosed construction makes possible to reliably pierce the septum of a sample vessel and to easily pull the pipetting needle out of the septum again even with thin pipetting needles.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2016 Application Filing Year
- B01L Class
- 1516 Applications Filed
- 1056 Patents Issued To-Date
- 69.66 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- B01L Class
- 26.25 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 27, 2024 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 27, 2028 |
