| 摘要 |
<p>A device is disclosed for use in for example obtaining a soft tissue biopsy sample from a patient. In one embodiment the device (30) comprises an outer needle (16) and a sampling needle (18) in coaxial relationship, a handle (34) to which one of the needles e.g. the sampling needle (18) is secured, and a lever arm (36) arranged to enable the other needle e.g. the outer needle (16) to be moved slidingly over the one needle (18). A spring (40) is arranged to bias the lever arm (36) and hence the outer needle (16) to a predetermined position. In use the needles (16, 18) are inserted into a patient and a portion of tissue (28) is trapped in a slot (26) cut into an end portion of the sampling needle (18) as the outer needle (16) slides fully over the sampling needle (18). The portion of tissue (28) is removed from the device (30) by releasing a catch (38) which causes the outer needle (16) to be drawn back under the influence of the spring (40) to expose the slot (26) in the sampling needle (18).</p> |
