Biopsy device for sampling tissue probes and application of substances in one operation

Biopsy device for obtaining tissue samples and application of substances in a single operation. The construction consists of a multi-lumen cannula with a biopsy channel (1), which encompasses the full transverse diameter of the cannula and one or more secondary channels (2); (2a, 2b) for the application of substances which communicate in the region of the cannula tip with the biopsy channel (Fig. 1: 1). The arrangement of the channels (1, 2, 2a, 2b) ensures a maximum transverse diameter of the tissue samples with a minimum transverse diameter of the needle. In the embodiment in which the cutting end of the biopsy device is formed by the acute-angled ground wall of the biopsy channel (Figure 9: 1) alone, and the application channel (2) formed by a tube pushed eccentrically across the biopsy channel does not reach the cutting end . On the one hand, the tissue is cut in the biopsy procedure without being affected by the application channel (2), on the other hand, the application channel (2) which acts only to displace it is not blocked by tissue. The control of the Anwendungsssystenis takes place automatically via a contact mechanism (5, 6) by the puncture process. By this invention, it is possible to shorten the intervention time for tissue removal and substance application significantly. As a result, complications in the biopsy can be avoided and the indications for biopsy can be extended. significantly reduce the time required for tissue removal and substance application. As a result, complications in the biopsy can be avoided and the indications for biopsy can be extended. significantly reduce the time required for tissue removal and substance application. As a result, complications in the biopsy can be avoided and the indications for biopsy can be extended.