BIOPSIEEINRICHTUNG

A biopsy device for obtaining a tissue sample and applying at least one substance in one work step has a biopsy cannula (1) forming a biopsy channel and is provided with a cutting edge (3) for separating tissue and with an application channel (9). In order to allow conventional biopsy instruments of a wide variety of constructions to be equipped in a simple manner with an application channel, the application channel (9) is designed as a gap which surrounds the biopsy cannula (1) and which is delimited by an application tube (6), which is pushed over the biopsy cannula (1) and whose front end (7) is sent back relative to the cutting edge (3) of the biopsy cannula (1), and at whose opposite end there is a connection piece (11) for connection of at least one line conveying the substance/substances to the application channel (9). The connection piece (11) is connected in a leakproof manner to the application tube (6), the biopsy cannula (1) passes through it, and it is sealed off relative to the said biopsy cannula (1).