The invention discloses a constant
temperature control stethoscope for
cardiac surgery, which belongs to the technical field of
medical instruments and comprises a
stethoscope head, a lower shell is arranged outside the
stethoscope head, a protection bin for storing the
stethoscope head is arranged inside the lower shell, and a through hole with the inner
diameter larger than the length of the
stethoscope head is formed in the middle of the bottom of the protection bin. According to the stethoscope, the
stethoscope head is stored in the lower shell, the
electric heating plate is arranged in the protection bin in the lower shell, and the
silica gel heating pad is arranged on the outer side of the bottom of the lower shell, so that in the using process of the stethoscope, the area in contact with the
skin and a vibrating diaphragm on the stethoscope head can be heated; in addition, a shaft rod and fan blades are arranged in the protection bin, and a turbulent flow
assembly composed of a transmission gear and a rotating part is arranged in the transmission bin, so that in the process of pushing out the
auscultation head, air blowing and preheating can be conducted on the
skin of the area where the
auscultation head is to be attached, stimulation to the
skin is reduced, and the using effect is improved.