| 摘要 |
The present invention relates to an apparatus for monitoring, sampling and storing pressure in a body cavity or blood pressure of a patient. The apparatus is a small portable recording unit for pressure assessment, including software for analysis of pressure recordings. A pressure transducer implanted e.g. in the skull of a patient senses the pressure and outputs a signal indicative of the pressure in the patients skull. The signals indicative of the pressure are converted to digital signals and sampled and stored by the microcomputer. The apparatus is sufficiently small to allow the patient to move freely around and not be bedridden during pressure recording. Intracranial pressure is sampled and stored by the apparatus several times a second for several days. After the end of pressure sampling, the data is transferred to a computer or network station for analysis. The invention includes a new method for analysis of pressure as well as software for performing the analysis. The computer software provides different quantitative presentations of pressure curves as a matrix of the number of intracranial pressure elevations of different levels or durations, a matrix of pressure changes of different levels and durations, or a matrix of the number of single pulse pressure waves with preselected characteristics.
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