| 摘要 |
<p>PCT No. PCT/BR94/00017 Sec. 371 Date Apr. 26, 1995 Sec. 102(e) Date Apr. 26, 1995 PCT Filed May 3, 1994 PCT Pub. No. WO95/29715 PCT Pub. Date Nov. 9, 1995The present invention relates to a double-valved variable pressure device for hydrocephaly having a vertical capsule with sloped ends ending in upper and lower coupling sectors appropriate for connection to a proximal catheter and a distal catheter that constitute the input and output for a cephalo-rachidian liquid through the body. The liquid or volume has its pressure controlled by means of two valves which maintain a constant drained volume along a wide range of pressures the device is submitted to.</p> |
