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Electrosurgical pencil switch,circuitry, and method of assembly

  • US 20110319892A1
  • Filed: 07/28/2011
  • Published: 12/29/2011
  • Est. Priority Date: 06/19/2009
  • Status: Active Grant
First Claim
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1. A switch for an electrosurgical pencil comprising:

  • a first electrical circuit frame, formed of electrically conductive metal sufficiently thick to carry current sufficient to cut, coagulate, ablate, excise, cauterize, and seal tissues by application of electric current to biological tissue,the first circuit frame having a first conducting strip, a first activation strap cut into the first conducting strip, a second activation strap cut into the first conducting strip, a first insulation displacement connector, and means for holding an active electrode,the first activation strap having a first center landing, and a plurality of crimps along its length,the first circuit frame having a plurality of first frame isthmus joined to the first conducting strip,the first circuit frame having a first exterior portion joined to the plurality of first frame isthmus,a second electrical circuit frame, formed of electrically conductive metal sufficiently thick to carry current sufficient to cut, coagulate, ablate, excise, cauterize, and seal tissues by application of electric current to biological tissue,the second circuit frame having a second conducting strip, with a first dome contact and a second insulation displacement connector formed therein, and a third conducting strip, with a second dome contact and a third insulation displacement connector formed therein,the second circuit frame having a plurality of second frame isthmus joined to the second conducting strip, and a plurality of third frame isthmus joined to the third conducting strip,the second circuit frame having a second exterior portion joined to the plurality of second frame isthmus, and to the plurality of third frame isthmus,a non-conductive base, molded in part over the first conducting strip, with first insulation displacement connector and means for holding an active electrode extending therefrom, the base formed with a first well, which exposes first activation strap, and a second well, which exposes second activation strap, and activation openings, through which appropriate means may be inserted to apply pressure to first and second activation straps from the exterior of the base.a non-conductive top, molded in part over the second and third conducting strips, with second and third insulation displacement connectors extending therefrom, the top formed with a third well which exposes the first dome contact of the second conducting strip, and a fourth well, which exposes the second dome contact of the third conducting strip,means for aligning and attaching the base to the top, so that the first activation strap of the first conducting strip may make electrical contact with the first dome contact of the second conducting strip when pressure is exerted against the first activation strap from the exterior of the switch, and the second activation strap of the second conducting strip may make electrical contact with the second dome contact of the third conducting strip when pressure is exerted against the second activation strap from the exterior of the switch.whereby the first conducting strip and the second conducting strip may be temporarily electrically joined to allow a first current to flow therebetween, and the first conducting strip and the third conducting strip may be temporarily electrically joined to allow a second current to flow therebetween.

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