Device for aspirating and dispensing liquid samples
First Claim
1. A device for aspirating and dispensing liquid samples comprising a pump that comprises a cylindrical chamber, a piston movable in this cylindrical chamber and a piston drive that engages the piston, the device further comprising a pulse generator that effects dispensing of samples from a liquid by generating pressure waves in this liquid, and a tip connected to the cylindrical chamber with a line, wherein the piston drive comprises a first drive and a second drive used as the pulse generator, and wherein the device also comprises a channel for flushing or rinsing the cylindrical chamber, and the channel discharges into the cylindrical chamber.
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Accused Products
Abstract
A device (1) for aspirating and dispensing liquid samples having a pump (2), which comprises a cylindrical chamber (3), a piston (4) movable in this cylindrical chamber, and a piston drive (5) engaging on the piston. The device additionally comprises a pulse generator (6), which effects dispensing of samples from a liquid by generating pressure waves in this liquid and a tip (8) connected via a line (7) with the cylindrical chamber (3), with the piston drive (5) comprising a first drive (9) and a second drive (10), implemented as a pulse generator (6). Such a device comprises a channel (27) for rinsing or flushing the cylindrical chamber (3), with the channel (27) discharging into the cylindrical chamber (3). Furthermore, the invention also concerns systems with, for example, 384 or more such devices that are arranged in an array.
53 Citations
35 Claims
- 1. A device for aspirating and dispensing liquid samples comprising a pump that comprises a cylindrical chamber, a piston movable in this cylindrical chamber and a piston drive that engages the piston, the device further comprising a pulse generator that effects dispensing of samples from a liquid by generating pressure waves in this liquid, and a tip connected to the cylindrical chamber with a line, wherein the piston drive comprises a first drive and a second drive used as the pulse generator, and wherein the device also comprises a channel for flushing or rinsing the cylindrical chamber, and the channel discharges into the cylindrical chamber.
Specification