| 摘要 |
<p>A hypodermic syringe assembly (200) includes a syringe (218) having a barrel shaped portion (214) with an opening (280) therein, a cartridge (202) insertable into the barrel shaped portion (214) of the syringe and containing a medication (262) injectable into a patient from the cartridge (202) with the needle (210) and the medication (262) being sealably contained within first (204) and second (260) separately sealed compartments, respectively, within the cartridge (202) before injection of the medication. A plunger (224) functions to push on the second compartment (260) and thereby extends the distal end of the needle (210) out of the cartridge (202) and the proximal end of the needle (213) into the sealed second compartment (260) containing the medication before the injection of the medication (262), without the needle (210) being touched by human hands. The plunger (224) retracts the needle (210) completely back inside the cartridge (202), again without the needle (210) contacting human hands and further releases the plunger (224) from the second compartment (260) to enable removal of the cartridge (202) from the barrel shaped portion (214) of the syringe.</p> |
