Abstract: A blood pressure controlling apparatus includes an acquiring part configured to acquire biological information indicating blood pressure of a subject, a producing part configured to produce a frequency modulated pulse train on the basis of the biological information, and a supplying part configured to supply an electrical current on the basis of the frequency modulated pulse train, to an electrode attached on the subject. The electrical current stimulates baroreceptor afferent nerves of the subject.

Abstract: A flow adjusting apparatus adjusts the flow rate of a fluid flowing in a plurality of tubes. The flow adjusting apparatus includes a tube coupling joint having a joint body and a plurality of engaging lugs. The joint body has a plurality of connection holes for connecting the tubes, respectively. The engaging lugs are mounted on the inner circumferential surfaces of the connection holes of the joint body and engage the outer circumferential surfaces of the tubes, respectively. The flow adjusting apparatus further includes a plurality of inner sleeves having outer diameters respectively corresponding to the inner diameters of the tubes. The inner sleeves increase the engaging forces of the engaging lugs against the outer circumferential surfaces of the tubes inserted in the connection holes of the joint body. The inner sleeves have different inner diameters to produce different flow rates of the fluid flowing in the tubes.