Collection and ejection device of contaminated medium with decontamination of handling device of said medium

摘要

For decontamination of a pipette type needle system, an electrically heated hollow needle (2) has a metal tube (3) in contact with the contaminated matter at its interior and/or exterior. Electrical energy is applied to the needle (2) at a level according to the electrical characteristics of the tube (3). This is determined in order to develop the heat needed to decontaminate the interior and exterior of the needle, without affecting its shape or structure. Also claimed is a needle (2) assembly with a hollow metal tube (3) with an active free end (3a) and another inactive end (3b). The intermediate tube section (3c) can be contaminated and decontaminated a number of times. An electrical connection (5) gives a current circuit with the needle (2) at the active (3a) and inactive (3b) ends. The control (4) sets the level of electrical energy applied to the needle (2).