The invention discloses a negative pressure adsorption type
hypodermic injection unit, which relates to a unit for carrying out
hypodermic injection of
insulin and other drugs, and consists of an adsorption device, an
air compression device, a quick air releasing device and an injection
syringe, wherein an absorber 1 is connected with an
air compressor 3 through an air tube 2 so that the air in the absorber 1 can be quickly pumped out through the
air compressor 3, negative pressure is formed in the absorber 1 so that the
skin shrinks and has a bulge, and the bulge height of the
skin can be adjusted through the
air compressor 3. The injection
syringe 4 is connected with the absorber 1 through
syringe steps in a sealing way, when the
skin shrinks and has the bulge, a
syringe needle is automatically inserted into the skin, and then
drug injection can be carried out. The quick air releasing device is formed by a rubber plug 5, when the rubber plug 5 is pulled out, the internal air pressure of the absorber 1 returns to the
atmospheric pressure, the skin diastoles and returns to be smooth, and the
syringe needle is automatically pulled out from the skin. The invention has the
hypodermic injection characteristics of easy skin contraction, quick
needle insertion, convenient injection and use, wide application scope and the like, and solves the problem that the old and the slimmer people are difficult to be injected with
insulin and other
subcutaneous injection drugs.