Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
1999-02-25
2001-02-06
Getzow, Scott M. (Department: 3737)
Surgery
Diagnostic testing
Cardiovascular
Reexamination Certificate
active
06183422
ABSTRACT:
FIELD OF THE INVENTION
1. Background of the Invention
The invention relates to a measuring system which measures the function of at least one organ from the user's body non-invasively and comprises at least one functional unit, such as a transmitter unit and/or a receiver unit.
2. Description of the Prior Art
Vital functions can be measured telemetrically using a non-invasive measuring device. An example of such a measuring device is a system which measures human heart rate and usually comprises such functional units as a transmitter unit, receiver unit and data transmission unit. The transmitter unit means a unit which is provided with electrodes and is held against the human body, particularly against the chest. This unit is often implemented as a transmitter belt attached around the body. The receiver unit refers to a watch-like unit which is worn on the wrist, for example, and which communicates telemetrically with the transmitter unit. The data transmission unit is used for transmitting data collected in the receiver unit to a computer, for example. The computer can also be used for controlling both the transmitter and the receiver units via the data transmission unit.
Measurement of the heart rate is based on monitoring the function of the heart. When the heart muscle contracts, it causes a series of electric impulses which can be measured in the body. The measurement and analysis of this signal is known as electrocardiography (EKG). The signal itself is called an EKG signal. Different phases of the heart cycle can be discerned in the EKG signal. These are called P, Q, R, S, T and U waves.
The unit that receives the heart rate usually comprises a piezoelectric sound signalling device, electroluminescent light source and at least a receiver for the heart rate. For the function of each device the prior art solutions comprise a separate induction coil. It is only known to use the same induction coil of the receiver unit for receiving the heart rate from the transmitter unit and for serial traffic with the data transmission unit. Since the receiver unit, in particular, is typically a device similar to a wrist watch, the space needed for several coils constitutes a major problem. The use of several coils also raises the price of the device.
OBJECTS AND SUMMARY OF THE INVENTION
The object of the invention is to provide a measuring system in which the above-mentioned problems are eliminated. Thus the space required by the coils can be reduced and the printed circuit simplified in the measuring system.
This is achieved with a measuring system described in the preamble, which is characterized in that the functional unit comprises an induction coil, whose inductive activity is arranged to be used for more than one function of the functional unit, the functions comprising inductive interaction between two functional units, controlling of a sound signalling device and controlling of a light source.
The system of the invention provides several advantages. Since the number of induction coils is reduced, less space is needed for electronic circuits. The coil is connectable to the desired function without the function having harmful effects on the other functions of the coil. The material costs also decrease.
REFERENCES:
patent: 4527096 (1985-07-01), Kindlmann
patent: 68734 (1985-10-01), None
patent: 88972 (1995-07-01), None
patent: 5076502 (1993-03-01), None
European Patent Publication No. EPO 0 627 194 A2, published Dec. 7, 1994 Applicant: Telectronics N.V. (Same as U.S. Patent No. 5,404,877 to Nolan, et al.; issued Apr. 11, 1995).
Korkala Seppo
Rytky Pekka
Getzow Scott M.
Hoffman & Baron LLP
Polar Electro OY
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