Patent ID: 8079977
Filing Date: 2011-12-20
Classification: A61J,A61M

Abstract:
1. A device for automatically mixing powder for injection, comprising: an injector body including a solute bottle having a mouth; a solvent bottle having a mouth opposite to the mouth of the solute bottle; a needle; a first impelling unit disposed upon the solvent bottle for driving the solvent bottle to slide toward the solute bottle; and a second impelling unit which is sleeved with the needle therein and located between the mouth of the solute bottle and the mouth of the solvent bottle, the second impelling unit comprising: a first impelling sleeve having a downwardly concave top surface that is upwardly protruded and includes a deflecting part and a sudden-drop slot; and a second impelling sleeve having a bottom surface that is downwardly protruded and includes a falling part that is receivable within the sudden-drop slot, said first and second impelling sleeves being driven by the solvent bottle to slide relative to the solute bottle, so that a first end of the needle extends into the solute bottle, the solvent bottle further drives the first and said second impelling sleeves to turn relative to each other, the second impelling sleeve sliding along the first impelling sleeve to make a second end of the needle extend into the solvent bottle, the falling part cooperating with the deflecting part to form a deflecting unit which is switchable from a mutually sliding movement to a mutually turning movement, said falling part being pressable upon the deflecting part, and the falling part and the deflecting part being turnable relative to each other until the falling part falls into the sudden-drop slot, thereby causing the second impelling sleeve to slide opposite the first impelling sleeve.