| 摘要 |
The invention relates to an injection device, comprising a volume (12, 14 ), for accommodating a product (12) for administration and a piston (20) to act upon the product within the volume and a stopper (16), which may be arra nged between the end of the piston facing the product and the product within the volume. According to the invention, the piston is provided with a pisto n head (18) which may be sealed in a gas-tight manner which is separate from the stopper (16) such that a low pressure or vacuum region (24) may be deve loped between the piston head and the stopper.
|
