Surgery – Truss – Pad
Patent
1977-04-29
1979-02-27
Kamm, William E.
Surgery
Truss
Pad
A61N 132
Patent
active
041413679
ABSTRACT:
An instrument for detecting and measuring various characteristics of cardiac pacers and electrodes and visually displaying such measurements selectively on a digital display includes pacer analyzer means for measuring and displaying characteristics of a pacer, such as rate, pulse width, peak voltage and trailing edge voltage, electrode analyzing means for measuring and displaying characteristics of an installed electrode, such as impedance and intrinsic and evoked R-wave voltages and internal pacer means including means for adjusting pacer impulse rate and voltage and means for measuring and displaying various pacer characteristics of the internal pacer impulses, such as rate, voltage and amperage, a rechargeable battery for energizing the various circuits of the instrument and means for preventing externally supplied battery recharging electric power from communicating through the instrument with installed cardiac electrodes and with a pacer to be tested. Among the more important features of the instrument described are improved measurements of impedance and R-wave characteristics, which are considered to be broadly novel, illuminated (when activated) pushbuttons for actuating various measuring circuits, color coding of such buttons and arrangement thereof in separable banks or groups for ready identification and ease of operation, and an extra large digital display, visible across an average operating room so that a displayed measurement can be read by doctors or technicians at any of various locations in the room and the characteristics measured can be readily identified by observation of the pushbutton that is illuminated.
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Kamm William E.
Med Telectronics Ltd.
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