Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2007-12-11
2007-12-11
Lee, Benjamin C. (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S571000, C340S572400, C340S572800
Reexamination Certificate
active
11055348
ABSTRACT:
A radio-frequency surgical implement detection system detects surgical implements in a surgical wound during and at the completion of a surgical procedure. Surgical implements, including surgical sponges or laparotomy pads, gauze pads and metallic surgical instruments, are individually attached to a non battery-powered, encapsulated radio-frequency marker. The marker comprises an integrated chip having a burnt-in memory code, which is broadcast through an antenna using a modulated carrier frequency. The code is received by an interrogating antenna of a detector. The interrogating antenna provides a power pulse, which is received by the antenna of the radio-frequency marker. The power pulse charges a capacitor, which proves power for the read function, carrier frequency modulation function and broadcast function of the integrated chip, permitting each marker-containing implement to be specifically identified.
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Fabian Carl E.
Narasimhan Dave
Buff Ernest D.
Ernest D. Buff & Associates LLC
Fish Gordon E.
Lee Benjamin C.
Tang Son
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