Diaper
First Claim
Patent Images
1. A diaper including a wetness reporting pad, said wetness reporting pad including:
- a piece of substrate with a major surface and an electric circuit on said major surface,a sensor connected with said electric circuit for measuring the electrical resistance of said electric circuit, anda data transmitter for receiving results of said measuring from said sensor for wireless transmission,wherein said electric circuit includes a first electrically conductive line with a first terminal and a second electrically conductive line with a second terminal, each said electrically conductive line being in the shape of a comb and interlocking with each other, andwherein at least said first electrically conductive line has a first section and a second section which are of different widths.
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Accused Products
Abstract
A diaper includes a medical pad including a piece of substrate with a major surface and an electric circuit on the major surface, a sensor connected with the electric circuit for measuring the electrical resistance of the electric circuit, and a wireless data transceiver or a radio frequency identification (RFID) tag electrically connected with the sensor for receiving results of the measuring from the sensor for subsequent transmission. The system carries out real time self-calibration to adaptively monitor the condition of the medical pad even in the face of changing environment and changing material properties.
17 Citations
24 Claims
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1. A diaper including a wetness reporting pad, said wetness reporting pad including:
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a piece of substrate with a major surface and an electric circuit on said major surface, a sensor connected with said electric circuit for measuring the electrical resistance of said electric circuit, and a data transmitter for receiving results of said measuring from said sensor for wireless transmission, wherein said electric circuit includes a first electrically conductive line with a first terminal and a second electrically conductive line with a second terminal, each said electrically conductive line being in the shape of a comb and interlocking with each other, and wherein at least said first electrically conductive line has a first section and a second section which are of different widths. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A diaper including a wetness reporting pad, said wetness reporting pad including:
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a piece of substrate with a major surface and an electric circuit on said major surface, a sensor connected with said electric circuit for measuring the electrical resistance of said electric circuit, and a data transmitter for receiving results of said measuring from said sensor for wireless transmission, wherein said sensor and said data transmitter are comprised in an integrated circuit (IC), further including a third terminal connecting with said second electrically conductive line via a calibration conductive line, allowing electrical resistance of said electric circuit to be measured for calibration purpose. - View Dependent Claims (9, 10)
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11. A diaper including a wetness reporting pad, said wetness reporting pad including:
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a piece of substrate with a major surface and an electric circuit on said major surface, a sensor connected with said electric circuit for measuring the electrical resistance of said electric circuit, and a data transmitter for receiving results of said measuring from said sensor for wireless transmission, wherein said sensor and said data transmitter are comprised in an integrated circuit (IC), wherein said IC is comprised in a sensor module which is releasably engageable with said substrate, wherein said sensor module includes a plurality of waterproof spring-loaded pogo pins which, when said sensor module is engaged with said substrate, electrically connect with said electric circuit on said major surface of said substrate, and wherein said sensor is adapted to measure the electrical resistance of each of said waterproof spring-loaded pogo pins. - View Dependent Claims (12, 13)
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14. A diaper including a wetness reporting pad, said wetness reporting pad including:
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a piece of substrate with a major surface and an electric circuit on said major surface, a sensor connected with said electric circuit for measuring the electrical resistance of said electric circuit, and a data transmitter for receiving results of said measuring from said sensor for wireless transmission, wherein said sensor and said data transmitter are comprised in an integrated circuit (IC), and wherein said sensor is adapted to measure the electrical resistance of said electric circuit in a pulsed manner. - View Dependent Claims (15, 16)
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17. A wetness reporting system including at least one diaper including at least one wetness reporting pad, at least one RFID reader and at least one antenna,
wherein said wetness reporting pad includes: -
a piece of substrate with a major surface and an electric circuit on said major surface, a sensor connected with said electric circuit for measuring the electrical resistance of said electric circuit, and a data transmitter for receiving results of said measuring from said sensor for wireless transmission, wherein said antenna has a leaky wave traveling wave mechanism, wherein radio frequency wave leaks out from a top surface of a parallel plate traveling wave waveguide of said antenna, wherein said top surface comprises a crossed mesh of conductive aluminum material, and wherein said parallel plate traveling wave waveguide of said antenna has at its excitation a sideway approaching coaxial cable with an external connector grounded to a metal back of said antenna.
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18. A method of reporting wetness of a subject, including steps:
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(a) positioning an electric circuit beneath said subject, (b) measuring the electric resistance of said electric circuit, (c) wirelessly transmitting data indicative of the electrical resistance of said electric circuit, (d) determining, on the basis of said data, whether the subject is wet, and (e) sensing and storing the time at which a sensor module is detached from a wetness reporting pad of a diaper and the time at which said sensor module is attached to a medical pad of a diaper.
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19. A method of calibrating a wetness reporting pad of a diaper:
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wherein said wetness reporting pad includes a piece of substrate with a major surface and an electric circuit on said major surface, a sensor connected with said electric circuit for measuring the electrical resistance of said electric circuit, and a data transmitter for receiving results of said measuring from said sensor for wireless transmission, wherein said electric circuit includes a first electrically conductive line with a first terminal and a second electrically conductive line with a second terminal, each said electrically conductive line being in the shape of a comb and interlocking with each other, and wherein said electric circuit further includes a third terminal connecting with said second electrically conductive line via a calibration conductive line, said method including a step (r) of measuring the electrical resistance of said calibration conductive line. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification