System for quantizing bladder distension due to pressure using normalized surface area of the bladder
First Claim
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1. An apparatus for automatically determining a bladder volume index value, which provides information concerning bladder condition of a user, comprising:
- means for automatically scanning a bladder of a user with ultrasound signals, receiving the returning signals, and calculating therefrom the volume of urine in the bladder;
means for automatically calculating an actual surface area of the user'"'"'s bladder from said returning ultrasound signals;
means for automatically determining a theoretical surface area of a sphere having said calculated volume; and
means for determining a surface area index value for the user as follows;
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Abstract
The apparatus is worn by a user and includes means for automatically scanning the bladder of the user with ultrasound signals. The returning signals are used to calculate the volume of urine in the bladder and also to calculate the actual surface area of the bladder. The theoretical surface area of a spherical bladder having the said calculated volume is then determined. A surface area index (SAI) is then determined as follows: ##EQU1## The SAI value is an indication of the roundness of the bladder and hence the pressure within the bladder.
46 Citations
18 Claims
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1. An apparatus for automatically determining a bladder volume index value, which provides information concerning bladder condition of a user, comprising:
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means for automatically scanning a bladder of a user with ultrasound signals, receiving the returning signals, and calculating therefrom the volume of urine in the bladder; means for automatically calculating an actual surface area of the user'"'"'s bladder from said returning ultrasound signals; means for automatically determining a theoretical surface area of a sphere having said calculated volume; and means for determining a surface area index value for the user as follows;
##EQU3## - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for automatically determining a bladder volume index value, which provides information concerning the bladder condition of a user, comprising the steps of:
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automatically scanning a bladder of a user with ultrasound signals, receiving the returning signals and calculating therefrom the volume of urine in the bladder; automatically calculating an actual surface area of the user'"'"'s bladder from the returning ultrasound signals; automatically determining a theoretical surface area of a sphere having said calculated volume; and determining a surface area index value for the user as follows;
##EQU4## - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification