Sampling with fitting between needle and housing
AssigneeAgilent Technologies, Inc.
InventorsThomas Ortmann, Michael Lang
Life of this patent
Estimating the term…
Abstract
A sampling unit includes a needle for aspirating a sample fluid, a housing, and a fitting. The needle includes a needle tip and a needle channel through the needle for guiding the aspirated sample fluid. The needle channel opens at the needle tip. The housing includes a housing cavity and a housing channel opening into the housing cavity. The fitting includes a fitting cavity and a fitting channel. The fitting is configured for sealingly receiving the needle tip into the fitting cavity and for being inserted into the housing cavity, so that the fitting channel on one side fluidically couples to the needle channel and on another side couples to the housing channel.
Claims14
A sampling unit comprising:
- a needle configured for aspirating a sample fluid, wherein the needle comprises a needle tip and a needle channel through the needle for guiding the aspirated sample fluid, and wherein the needle channel opens at the needle tip;
- a housing comprising a housing cavity and a housing channel opening into the housing cavity;
- and
- a fitting having a fitting cavity and a fitting channel, wherein the fitting is configured for sealingly receiving the needle tip into the fitting cavity and for being inserted into the housing cavity, so that the fitting channel on one side fluidically couples to the needle channel and on another side couples to the housing channel.
A method for sampling, the method comprising:
- aspirating a sample fluid via a needle having a needle tip and a needle channel through the needle;
- penetrating at least a portion of the needle tip into a fitting cavity of a fitting received into a housing cavity of a housing;
- pressing the needle against the housing so that a fitting channel of the fitting on one side fluidically couples to the needle channel and on another side fluidically couples to a housing channel of the housing opening into the housing cavity;
- and
- injecting at least a portion of the aspirated sample fluid via the fitting channel into the housing channel.
Dependencies are inferred from the claim text.