The invention relates to an injection type
carbon dioxide regulator for a
breathing machine, and aims to solve the technical problem of man-
machine confrontation easily caused by providing
carbon dioxide for a patient under the assistance of the
breathing machine clinically in the prior art. According to the technical scheme, the injection type
carbon dioxide regulator comprises a
barrel, a
piston, a hollow shaft push rod and a plurality of clamping strips, a hollow shaft through hole is formed in the middle of the top face of the
barrel, clamping grooves for fixing the clamping strips are formed in the positions, located at the two ends of the hollow shaft through hole, of the top face of the
barrel, and a trachea cannula connector integrated with the barrel is arranged at the bottom end of the barrel;the
piston is arranged in the barrel; the hollow shaft push rod is inserted into the hollow shaft through hole and penetrates through the middle of the
piston, the lower end of the hollow shaft push rod is flush with the bottom face of the piston, the top end of the hollow shaft push rod is a
respirator connector and exceeds the top face of the barrel, and the clamping strips are evenly arranged on the two sides of the outer wall of the hollow shaft push rod. According to the invention, the volume of the
breathing dead space can be adjusted by adjusting the up-and-down movement of the injection piston, so that the reutilization of carbon dioxide is increased.