Fiber optic cable for supplying light to an endoscope and for de

Details Fiber optic cable for supplying light to an endoscope and for de Fiber optic cable for supplying light to an endoscope and for de

1998-08-07

2000-08-29

Leubecker, John P.

Surgery

Endoscope

Having imaging and illumination means

600178, 600132, 600118, 385 40, 385101, 403 27, A61B 107, G02B 636

Patent

active

061101079

ABSTRACT:
A fiber optic cable (124) for supplying light to an endoscope (22) from a light source (28). The cable, in addition to including an optically transmissive core (50), includes two conductors (62) that are not in direct electrical contact with each other. Contacts (140, 146) integral with a plug (130) attached to one end of the cable connect the conductors to circuitry internal to the light source. The conductors extend to a switch (384) in a second plug (132) which is closed when a sensor (387) closes the switch to establish an electrical connection between the conductors. The sensor closes the switch when the second plug is connected to an endoscope. The circuit internal to the light source monitors the change in voltage across the conductors to determine if the connection is established. When the connection is not established, the light source places itself in a standby mode reducing the amount of emitted light energy, thus minimizing heating of the light cable, and the second, distal plug.

REFERENCES:
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PCT Application No. PCT/US97/15834, International Preliminary Examination Report, Nov., 1998.
PCT Written Opinion for App. No. PCT/US97/15834 dated Sep. 23, 1998, including Search Report dated Jan. 16, 1998 (11 pages).

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