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Medical apparatus including on isolating transformer apparatus for isolating medical apparatus from non-medical apparatus to prevent electrical shocks to patients

  • US 5,174,293 A
  • Filed: 07/12/1991
  • Issued: 12/29/1992
  • Est. Priority Date: 11/17/1988
  • Status: Expired due to Term
First Claim
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1. A medical apparatus comprising the combination of:

  • an electrical medical apparatus for use with an endoscope connectable thereto and adapted for at least one of a diagnostic and medical treatment;

    at least one electrical non-medical apparatus including a line cord and a plug, said at least one electrical non-medical apparatus being used in association with said electrical medical apparatus; and

    an isolating transformer apparatus isolating a patient from electrical shocks from said electrical medical apparatus used together with said electrical non-medical apparatus, said isolating transformer apparatus being connectable by an authorized person to a commercial power supply and being connected to said line cord and plug of said electrical non-medical apparatus, said electrical medical apparatus being connectable to said commercial power supply, said isolating transformer apparatus including;

    a housing having a plurality of walls;

    a transformer contained in said housing, said transformer having a primary and secondary winding, said primary winding being connectable to said commercial power supply, and said secondary winding being electrically isolated from said primary winding;

    a power supply socket mounted on said wall of said housing and being connected to said secondary winding, said socket having means for receiving therein said plug of said electrical non-medical apparatus;

    retainer means provided on an outside portion of said housing, said retainer means preventing said plug of said electrical non-medical apparatus from being removed when said plug is connected to said power supply socket; and

    locking means for locking said retainer means to said housing, said locking means preventing removal of said retainer means without an engaging and disengaging tool.

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