Patent ID: 11872074
Assignee: nan
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A system for non-invasive monitoring of an intracranial reserve space (ICRS) parameter of a mammalian subject, comprising:
an at least two-dimensional multi-frequency ultrasound probe configured, beginning at a start time, to emit and receive ultrasound waves into and from a head of the subject and to produce a signal of intracranial brain tissue pulsations in at least a horizontal spatial and a vertical spatial dimension, the brain tissue pulsations responsive to pulses of a heart systole and/or arterial pressure;
an instrument configured to non-invasively apply a pressure to a neck of the subject effectuate a partial occlusion of an internal jugular vein of the subject, the partial occlusion staffing at the start time, the instrument including a second ultrasound probe configured to produce a second signal for imaging the internal jugular vein the instrument including a pressure applying component having at least one surface configured to contact the neck and including a manometer; and
a computer system configured to receive the signal and an output, of the start time of the partial occlusion of the internal jugular vein of the subject, the computer system also configured, using one or more processors, to derive from the signal of intracranial brain tissue pulsations an intracranial brain tissue pulsation waveform, and to determine a length of time front the start time to a subsequent time at which the waveform is compressed so as to exhibit a predefined decline in variability, the predefined decline in variability being an amount that is 5% or more, the computer system also configured to receive the second signal and to derive from the second signal images of the internal jugular vein.