Surgical implement detector utilizing capacitive coupling

Details Surgical implement detector utilizing capacitive coupling Surgical implement detector utilizing capacitive coupling

1992-03-25

1993-02-23

Cohen, Lee S.

Surgery

Miscellaneous

Devices placed entirely within body and means used therewith

128903, 604362, 606 1, A61B 1900

Patent

active

051881268

ABSTRACT:
An apparatus for detecting a surgical implement in human or animal tissue comprises a battery powdered marker. The marker is secured to the surgical implement and positioned within a surgical wound. A detection means has an antenna disposed in close proximity of the tissue. Means are provided for capacitance coupling of both the marker and the antenna to the tissue. A field generating means generates an electromagnetic field having a predetermined frequency band within the tissue and a signal generating means generates a signal having a predetermined frequency band ranging from about 10 MHz to 1 GHz. The signal generated by the signal generating means causes the field generating means to generate the electromagnetic field providing the marker with signal identity.

REFERENCES:
patent: 4114601 (1978-09-01), Abels
patent: 4193405 (1980-03-01), Abels
patent: 4196734 (1980-04-01), Harris
patent: 4658818 (1987-04-01), Miller, Jr. et al.
patent: 4719919 (1988-01-01), Marchosky et al.
patent: 5105829 (1992-04-01), Fabian et al.

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