| 摘要 |
PCT No. PCT/NL96/00111 Sec. 371 Date Sep. 29, 1997 Sec. 102(e) Date Sep. 29, 1997 PCT Filed Mar. 12, 1996 PCT Pub. No. WO96/28097 PCT Pub. Date Sep. 19, 1996Aspiration instrument for cell biopsy purposes, comprising: a cylinder (3) which at the distal end is provided with a region for fastening a hypodermic needle (5), a plunger (6) whose distal end is in the form of a piston (8), which piston is movable in the cylinder between a first position and a second position, a guide (4) for guiding the plunger, a pre-compression element (17) for pre-compressing the plunger in the direction of the first position, which pre-compression element is activated when the plunger is moved from the first to the second position, locking elements (9, 10) for locking the plunger in the second position, a device for unlocking the locking elements, in order to make the plunger move from the second to the first position under the influence of the pre-compression elements. The plunger, the guide for the plunger, the pre-compression element, the locking elements and the unlocking device are all combined to form a unit (2) to which the cylinder is detachably connected. The unit is made of sterilizable material. |
