Patent ID: 11898997
Assignee: ROCHE DIAGNOSTICS OPERATIONS, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A liquid chromatography (LC) system comprising:
an LC switching valve comprising a sample input port, an aspiration pump port, a needle seat port, a waste port, an LC pump port and an LC column port,
a sample aspiration needle fluidically connected to the sample input port via a sample receiving conduit,
an aspiration pump fluidically connected to the aspiration pump port for aspirating a sample via the sample aspiration needle when the sample aspiration needle is inserted into a sample container and when the aspiration pump port is connected to the sample input port,
a needle seat fluidically connected to the needle seat port via a needle seat conduit,
an LC column fluidically connected to the LC column port, and
an LC pump fluidically connected to the LC pump port, for injecting at least part of the sample aspirated in the sample receiving conduit into the LC column when the sample aspiration needle is seated into the needle seat and when the LC pump port is fluidically connected to the needle seat port and the sample input port is fluidically connected to the LC column port,
wherein in use of the LC system, the LC pump is configured to inject the at least part of the sample via the sample receiving conduit into the LC column such that the at least part of the sample is not injected into the LC column via the needle suit conduit when the sample aspiration needle is seated in the needle seat.