| 主权项 |
1. A biopsy device, comprising:
a disposable unit including a needle carrier and a biopsy needle, the biopsy needle having a distal portion including a sample chamber, the biopsy needle configured to rotate around a longitudinal axis that passes through the biopsy needle, and the disposable unit including a hub portion connected to the biopsy needle proximal to the sample chamber; the needle carrier having a holding portion, the holding portion and the hub portion collectively configured to permit the biopsy needle to rotate within the needle carrier to rotationally position the sample chamber while restraining rotation of the biopsy needle at a series of rotational detent positions within a range of rotation around the longitudinal axis, the holding portion and the hub portion configured such that the hub portion is rotatable within the holding portion at each of the series of rotational detent positions, and wherein each of the series of rotational detent positions is defined by a resistance to a rotation of the hub portion in the holding portion. |
