| 摘要 |
A biopsy instrument comprises a cutting head having first and second co-operable jaws movable with respect to a support between open and closed states, and a jaw drive for moving one or both of the jaws into the closed state to take a biopsy sample in response to an actuating input from a user. The jaw drive is user-adjustable between first and second cutting modes differentiated by the response of the jaws to the actuating input. In the first cutting mode, both jaws may move equi-angularly with respect to the support between the open and closed states; in the second cutting mode, one jaw may remain stationary with respect to the support such that only the other jaw moves between the open and closed states.
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