| 摘要 |
A tissue sampling device with a needle assembly (l) comprising a hollow outer needle (2) and an inner needle (3) slidably provided within the outer needle, said inner needle being provided with a hollow (3b) near its point for receiving a tissue sample, said device further comprising a housing (5), in which the needle assembly (l) is insertable, a propelling device (9) for propelling the inner needle (3), a propelling device (8) for propelling the outer neddle (2), and a release mechanism (l8) operable from the outside of the housing, and adapted to release said propelling devices, whereby propelling device is provided with at least one biassable spring mechanism, whereby the bias force comprises the driving force of the propelling means. The device is characterized by an energizing device, operable from the outside of the housing, said energizing device biassing the spring mechanisms (8, 9) of the propelling devices simultaneously. |
