Abstract: A rubber composition for vibration damping rubbers, comprising, a rubber component which comprises at least one selected from the group consisting of natural rubbers and polyisoprene rubbers in an amount of 60 to 95 parts by weight, and which comprises a styrene butadiene rubber in an amount of 5 to 30 parts by weight and a complex zinc flower in an amount of 2 to 10 parts by weight for 100 parts by weight of the rubber component. The complex zinc flower has a nitrogen adsorption specific surface area of 15 to 110 m2/g, a DBP oil absorption amount of 50 to 100 mL/100 g, and a zinc flower concentration of 38 to 64% by weight.

Abstract: An airway device includes a body fluid suction tube; a tracheal insertion tube to be passed through a trachea of a patient for sucking in a body fluid in the trachea of the patient; and an adaptor disposed at a base end portion of the tracheal insertion tube to be freely rotatable. The body fluid suction tube is arranged so that an opening portion thereof is situated inside relative to an opening portion of the tracheal insertion tube. The body fluid suction tube is arranged so that only the distal end portion thereof is urged against an inner surface of the tracheal insertion tube through an elastic force. The body fluid suction tube is arranged so that a lower side of an outer surface thereof is separated and is not closely contact with an upper side of the inner surface of the tracheal insertion tube.

Abstract: A rubber composition for vibration damping rubbers, comprising, a rubber component which comprises at least one selected from the group consisting of natural rubbers and polyisoprene rubbers in an amount of 60 to 95 parts by weight, and which comprises a styrene butadiene rubber in an amount of 5 to 30 parts by weight and a complex zinc flower in an amount of 2 to 10 parts by weight for 100 parts by weight of the rubber component. The complex zinc flower has a nitrogen adsorption specific surface area of 15 to 110 m2/g, a DBP oil absorption amount of 50 to 100 mL/100 g, and a zinc flower concentration of 38 to 64% by weight.

Abstract: A tracheal cannula of the invention includes a breathing path for supplying and discharging air formed between a basal end for connection with a breathing tube extending from an external artificial respirator and a distal end for insertion into a patient's trachea, and a trachea side opening formed at the distal end of the breathing path. Besides and along the breathing path, a suction path is provided for sucking phlegm accumulated in the patient's trachea. A phlegm suction opening is formed in a region of a wall of the suction path on the side of the inner wall of the trachea between the distal end of the breathing path and a cuff, the phlegm suction opening facing the inner wall of the trachea.

Abstract: An intra-tracheal sputum aspiration apparatus arranged so that air feeding to and air evacuation from trachea (13) by means of artificial respirator (12) are carried out through tracheal cannula (14) and so that in the event of sputum clogging, tube pump (16A) is operated to thereby attain discharge of sputum through suction tube (15) to the outside of the body by means of a negative pressure produced thereby. By virtue of the employment of the tube pump (16A) as a sputum aspirator (16), the intra-airway pressure by the artificial respirator (12) would have substantially no fluction even when a positive pressure is applied to the lungs. Consequently, sputum disposal can be accomplished while maintaining artificial artificial respiration, so that there can be prevented any secondary infection by infectious agents discharged from sputum collection bottle (17) into the air.