| 摘要 |
<p>The present invention relates to blood-flow sensors, in particular, to optical blood-flow sensors, such as photoplethysmographic sensors. In one aspect the present invention provides blood-flow sensor apparatus, comprising a blood-flow sensor probe 11 connected to signal processing apparatus, a housing, for receiving a body part of a subject, a light source 5 and a photodiode 6, mounted to the housing wherein the housing has a shaped surface 12, 13 which is shaped to conform, at least in part, to the shape of the body part. In embodiments the shaped surface can be an angled or curved surface, which can be shaped to receive a human digit. In other aspects the housing can form a clip. In other aspects the housing can provide a deformable pad 14 for cushioning the body part to be received. Further aspects provide blood flow sensor probes and methods for processing bloodflow data using a finite impulse response filter, such as a bandpass filter.</p> |
