| 摘要 |
Injection device for medical use, adapted for injection by using a manual syringe. It can be inserted into a cavity in an inner tube (25), which is equipped with a restraint system for the syringe body (41), wherein the fixing and centering of the syringe at three levels are triggered by pressing down the syringe into the inner tube (25), through the depression releasing a spring-loaded surrounding intermediate tube (15) to protrude and enclose, fix and center the syringe (41). The spring force results from taking out the syringe when the enclosing middle tube (15) is pressed down against the spring force in an outer tube forming a housing (2) of the injection device, to a locked position. A displacement device (31) located in the inner tube (25) can displace the syringe body plunger portion (44) in two directions in a controlled sequence so that, during a loading step a selected amount of medication is automatically drawn into the syringe body (41) and after insertion in body tissue medicine in the selected amount is injected. The spring force resulting from the pressing down the protective middle tube (15) will, when taking out the manual syringe (40), then give power to the automatic protrusion of the centering and protective middle tube (15). |
