| 摘要 |
<p>A pressure monitor for directly measuring the pressure in a liquid in a catheter, comprising light emitting means (1), photo sensitive means (2), receiving the light from the light emitting means (1) and transforming the light received into electric signals, and between the light emitting and light receiving means (1 and 2) a space accommodating a measuring zone of the catheter in which the pressure is measured. The measuring zone may be a part of the catheter tubing (3) or a branch pipe (4) of said tubing (3), the free end of this branch pipe (4) being closed. The light transmitted through the measuring zone varies in accordance with the pressure in the catheter.</p> |
