Although it is jointed to the fluid depot, although the fluid entrance and it is jointed to the body of the patient, the fluid flow regulator of the passive type which possesses with the fluid exit (13) which is suited is suited (1) is disclosed. Although the aforementioned regulator the hardness substrate (2) and possesses the elastic film (3), in order these, to demarcate the chamber (6) with the aforementioned hardness substrate and the aforementioned elastic film, is shift concatenated together, the aforementioned chamber (6), is separated from the aforementioned fluid exit, the aforementioned film (3), the aforementioned chamber which is jointed to the aforementioned fluid entrance (6) has the 1st surface (12) on opposite side. The aforementioned film (6) in order to demarcate the path for the fluid to the aforementioned fluid exit from the aforementioned fluid entrance, has the multiple perforation holes (15) which it adjoins with the aforementioned chamber, when impressing the pressure where the fluid is sufficient on the aforementioned 1st surface, in order for it to be possible to contact with the aforementioned substrate, it is flexible. The multiple aforementioned perforation holes are formed, when fluid pressure augments, in order almost to become fixed as a function of the pressure where fluid capacity inside the specified pressure range is impressed on the aforementioned 1st surface, in order to augment the drag force of the regulator, in order to close in turn.流体貯留槽に接続されるのに適した流体入口と、患者の体に接続されるのに適した流体出口(13)とを有する受動タイプの流体流れ調整器(1)が、開示される。前記調整器は、剛基板(2)及び弾性膜(3)を具備し、これらが、前記剛基板と前記弾性膜との間に室(6)を画定するように共に固く連結され、前記室(6)が、前記流体出口から分離される一方で、前記膜(3)が、前記流体入口に接続される前記室(6)の反対側に第1の表面(12)を有する。前記膜(6)は、前記流体入口から前記流体出口への流体のための経路を画定するために、前記室と隣接する複数の貫通孔(15)を有し、流体が十分な圧力を前記第1の表面に印加したときに、前記基板と接触することができるように柔軟である。複数の前記貫通孔は、流体圧力が増加したときに、流体流量が所定の圧力範囲内で前記第1の表面に印加される圧力の関数としてほぼ一定となるように、調整器の流体抵抗を増加させるように順々に閉じるように構成される。
