DEVICE FOR LIQUID MICRO-INJECTION IN CONFINED MEDIUM

摘要

The invention concerns a device for liquid micro-injection in confined medium comprising at least: one plunger-type (19) syringe (16) bearing a small diameter injection cannula (23), means for driving the plunger for injection, control means for the plunger driving means, the driving means being of the pneumatic type controlled by a mobile member capable of being actuated by an operator. The driving means comprise a pressurized gas which acts directly on the plunger and means supplying pressurized gas into the syringe (16) upon contact with the plunger (19). The control means comprise a mobile member capable of being actuated by an operator to apply gas pressure to the syringe plunger and to cancel said pressure. The injection volumes are less than about 800 mu l.