Cross-cut: `sensor-cuffless-bp-volume-clamp`

Axis: sensors

1 corpus entries disclose this tag.

Earliest disclosure: 1973

Listed in chronological order. Each entry’s prior_art_notes and disclosure_citation constitute the citeable prior art material.

Peñáz (1973) — the volume-clamp (vascular unloading) method of continuous finger blood pressure (1973)

id: penaz-1973-volume-clamp-finger-bp
corpus: academic
form factor: other
creator: Jan Peñáz
disclosure: Peñáz J. ‘Photoelectric measurement of blood pressure, volume and flow in the finger.’ Digest of the 10th International Conference on Medical and Biological Engineering, Dresden, 1973, p. 104. (Basis of the Finapres / volume-clamp continuous BP monitors.)
ip status: public-domain
sensors: sensor-ppg, sensor-cuffless-bp-volume-clamp, sensor-pressure-skin
algorithms: algo-pwv-bp-estimation
prior art notes: Discloses the volume-clamp / vascular-unloading method: a finger cuff servo-controlled by a photoplethysmographic feedback loop to hold the arterial volume constant, so the applied counter-pressure tracks the arterial pressure waveform continuously and non-invasively. Any cuffless/continuous-BP wearable claim reciting ‘a photoplethysmographic feedback loop controlling an applied pressure to maintain constant vascular volume’ reads on Peñáz 1973. Anchor for the volume-clamp cuffless-BP cross-cut (the finger/ring form-factor variants are obvious combinations under [[obviousness-template]]).