Penile tumescence and rigidity monitoring device
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United States of America Patent
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Dec 19, 2000
Grant Date -
N/A
app pub date -
Aug 16, 1999
filing date -
Aug 16, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and device for measuring nocturnal penile tumescence and rigidity. In a first embodiment, two circular elastic sensors of differing viscoelasticities, placed around a penis, sense changes in penile circumference, which describes penile tumescence. A comparison of the instantaneous circumferences of the two sensors describes penile rigidity. Sensor circumference is measured by monitoring changes in electrical resistance across the sensor. In a second embodiment, a single circular elastic sensor senses changes in penile circumference (describing tumescence), while rigidity is described by changes in amplitude of a plethysmographic signal sensed by the single circular sensor. In a third embodiment, a photoplethysmographic sensor senses a penile plethysmographic signal. The signal mean intensity describes penile tumescence, and changes in amplitude of the plethysmographic signal describe changes in cardiac outlook.
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