发明名称 |
Ingestible size continuously transmitting temperature monitoring pill |
摘要 |
A temperature responsive transmitter is disclosed. The transmitter utilizes a unique circuit design that allows encapsulation in an ingestible size capsule. The inventive circuit design uses a one transistor inverting amplifier with a tank circuit forming the link between the transistor's collector and the battery. The tank circuit is tuned to provide a lagging capacitive load which causes the inverting amplifier to oscillate. The tank circuit contains a coil inductor that emits a near field magnetic communications field containing temperature information. The ingestible size temperature pill can be configured in a rechargeable embodiment. In this embodiment the pill uses the inductive coil in the tank circuit as the magnetic pickup to charge a rechargeable nickel cadmium battery.
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申请公布号 |
US4844076(A) |
申请公布日期 |
1989.07.04 |
申请号 |
US19880236885 |
申请日期 |
1988.08.26 |
申请人 |
THE JOHNS HOPKINS UNIVERSITY |
发明人 |
LESHO, JEFFERY C.;HOGREFE, ARTHUR F. |
分类号 |
A01K11/00;A61B5/00;A61B5/07;G01K1/02;G01K7/32 |
主分类号 |
A01K11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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