Abstract: A method for processing pressure signals derived from locations inside or outside a human or animal body or body cavity. Different aspects relate to a method for optimal differentiating between cardiac beat- and artifact-induced pressure waves, a method for obtaining new and improved information from the pressure signals, and methods for predicting pressures inside a body or body cavity from pressure-related signals derivable from outside the body or body cavity. Devices and a system for sensing continuous pressures signals and displaying output of processing according to method. Other features related to aspects of draining fluid from a brain or spinal fluid cavity.

Abstract: A system for performing an analysis of pressure-signals derivable from pressure measurements on or in a body of a human being or animal, includes a communication interface for receiving a set of digital pressure sample values, a memory for storing these values, and a processor capable of performing the analysis, the processor having means to identify features related to single pressure waves in the pressure signals based on input of the digital data into the processor, and the processor further having determination means which based on the features is configured to a) determine a minimum pressure value related to diastolic minimum value and a maximum pressure value related to systolic maximum value, b) determine at least one parameter of the single wave parameters elected from the group of: pressure amplitude=?P=[(maximum pressure value)?(minimum pressure value)], latency (?T), rise time or rise time coefficient=?P/?T, and wavelength of the single wave, c) determine number of the single pressure waves occurri

Abstract: A method for analysing pressure-signals derivable from pressure measurements on or in a body of a human being or animal, comprising the steps of identifying from said digital data features related to single pressure waves, and determining at least one parameter of the single wave parameters elected from the group of: pressure amplitude ?P, latency (?T), rise time coefficient ?P/?T, and wavelength of the single wave, as well as determining numbers of single pressure waves with pre-selected combinations of two or more of said single pressure wave parameters during said given time sequence. In another aspect of the invention, the method is capable of identifying from said digital data features related to absolute pressures relative to atmospheric pressure a number of different pressure levels and duration thereof, and presenting the numbers of levels of various time durations in said matrix format.