Patent ID: 8029480

Claim:
An injection volume regulating device for a liquid medicine, the device being equipped between a first hose and a second hose, the first hose being hermetically connected to a lower end of a pack containing the liquid medicine and the second hose being connected to a needle, and comprising: a disk-shaped fixing member comprising an inlet connected to the first hose to be supplied with the liquid medicine from the pack through the first hose, an inflow hole connected to the inlet to deliver the liquid medicine to a passage recess of a regulating member, an outflow hole to be supplied with the liquid medicine from a liquid medicine-delivering groove of the regulating member, an outlet connected to the outflow hole to discharge the liquid medicine to the second hose so as to allow the liquid medicine to be supplied to the needle, and an insertion hole to be equipped with a fastening member; the regulating member having a disk shape, and comprising the passage recess having an arcuate shape and being connected to the inflow hole to be supplied with the liquid medicine from the inflow hole, the liquid medicine-delivering groove formed at one end of the passage recess and connected to the outflow hole, and an insertion hole to be equipped with the fastening member; a passage recess-sealing member sealing the passage recess while communicating the inflow hole with the passage recess, and an outflow hole-sealing member sealing the outflow hole; and the fastening member passing through the insertion hole of the fixing member and the regulating member to fasten the fixing member to the regulating member, and a handle detachably equipped to a lower portion of the fixing member such that the handle can be gripped with one hand, wherein the regulating member further comprises one or more in-recess protrusions having a greater central angle than that of the passage recess and being separated a predetermined distance from the passage recess.