Depending on the pressure differential or anticipated to be made bloodstream impact member to be placed in the vena cava of a human cardiopulmonary resuscitation, is present between the downstream region and the upstream region of blood flow impact member , no blood flow impact member is to substantially reduce the blood flow in the vena cava in - between the state of blood flow to allow the low blood flow state, blood flow blood flow affected member is not substantially reduced It can be controlled, blood flow control device having a blood flow impact member. And can reduce backflow of blood pressure phase of CPR, thus flow control device to improve blood perfusion and efficiency of CPR. In order to deliver the drug directly to the heart most, flow control device can and is also used to measure the chemical properties and physiological such as blood gases.心肺蘇生中に人の大静脈内に置かれるように構成される血流影響部材であって、血流影響部材の上流域と下流域との間に存在する若しくは予測される圧力差に応じて、血流影響部材が大静脈内の血流を実質的に減少させる無‐低血流状態と、血流影響部材が実質的に減少していない血流を許可する血流状態との間で制御可能である、血流影響部材を有する血流制御装置。血流制御装置はCPRの圧迫フェーズ中の血液逆流を減らすことができ、従ってCPRの効率と血液かん流を改善する。血流制御装置は心臓にほとんど直接薬物を送達するため、及び血液ガスなどの生理学的及び化学的性質を測定するためにも使用されることができる。
