Clamp for electro-surgical dispersive electrode

• US 4,952,177 A
• Filed: 12/19/1989
• Issued: 08/28/1990
• Est. Priority Date: 12/19/1989
• Status: Expired due to Term

• Current Assignee: 3M Company
• Original Assignee: 3M Company
• Inventors: Weimer, William K., Drake, Gerald E., Goodlad, Robert L.
• Primary Examiner(s): McGlynn, Joseph H.
• Assistant Examiner(s): Vu, Hien D.
• Application Number:
  US07/452,720
• Time in Patent Office: 252 Days
• Field of Search: 439/217, 439/218, 439/170, 439/171, 439/172, 439/174, 439/725, 439/838
• US Class Current: 439/838
• CPC Class Codes: A61B 18/16 Indifferent or passive electrodes for grounding
• CPC Class Codes: H01R 11/22 End pieces terminating in a spring clip
• CPC Class Codes: H01R 2201/12 for medicine and surgery
• CPC Class Codes: Y10S 439/909 Medical use or attached to human body

Abstract

A clamp for releasably engaging dispersive electrodes is disclosed. The clamp is adaptable to be used either with electro-surgical generating equipment which has a unitary plate continuity safety circuit or with an electro-surgical generating equipment which has an impedance split-plate impedance safety circuit. The clamp electrically adapts a split-plate electrode to be useful with an electro-surgical generating equipment which has a unitary plate continuity safety circuit.

Claims

1. A connector for releasably engaging a plurality of projecting tabs separated from one another and having opposed electrically conductive and insulated surfaces, comprising:

(a) a housing having an exterior surface, an interior surface being formed within said housing for receiving the projecting tabs, and a slot in said housing disposed between said exterior surface and said interior surface,

(b) a plurality of receiving means separated from one another and located on said interior surface, each receiving means for electrically contacting an electrically conductive surface on a corresponding projecting tab, and

(c) bridging means disposed on said interior surface for electrically contacting said plurality of receiving means whenever a plurality of electrically conductive surfaces of the projecting tabs contacting said corresponding plurality of receiving means also contact said bridging means.

2. A connector according to claim 1, wherein said plurality of receiving means comprises two electrical contact strips laterally separated on said interior surface, and wherein said bridging means comprises a third electrical contact strip separate from but disposed between said two electrical contact strips, whereby whenever each conductive surface of the two projecting tabs contacts both said third electrical contact strip and one of said two electrical contact strips, said two electrical contact strips are electrically connected.

3. A connector according to claim 1, wherein said bridging means is moveable on said interior surface to contact the electrically conductive surfaces of the plurality of projecting tabs.

4. A connector according to claim 1, wherein each of the plurality of receiving means is electrically connected to an electro-surgical generating system having a safety disconnect circuit.

5. A connector according to claim 1, wherein whenever the plurality of projecting tabs are inserted through said slot and received at said interior surface, said plurality of receiving means contact both the electrical conductive surfaces and the electrical insulated surfaces of the projecting tabs and said bridging means contacts only one of the opposed surfaces of the projecting tabs.

6. A connector according to claim 5, wherein said housing further comprises means for releasably engaging the tabs at said interior surface in contact with said plurality of receiving means and said bridging means.

7. A connector according to claim 5, wherein when said bridging means contacts the electrically insulated surfaces of the plurality of the projecting tabs, said receiving means remain electrically unconnected.

8. A connector according to claim 5, wherein when said bridging means contacts the electrically conductive surfaces of the plurality of the projecting tabs, said receiving means are electrically connected.

9. A connector according to claim 1, wherein said bridging means is moveable on said interior surface to avoid contact with at least one of the electrically conductive surfaces of the plurality of projecting tabs.

10. A connector according to claim 9, wherein said bridging means rotates on said interior surface between two of said receiving means.

11. A clamp to electrically adapt a split-plate dispersive electrode having at least two electrically conductive surfaces extending therefrom into a unitary plate dispersive electrode, comprising:

at least a pair of separately disposed and laterally spaced electrical contact strips;

at least one separately disposed bridge electrical contact strip laterally spaced between said pair of contact strips;

whereby said pair of contact strips are electrically connected when the electrically conductive surfaces of the split-plate electrode contact said bridge contact strip and each of electrically conductive surfaces also contacts one of said contact strips.