Switch and connector

A switch for an electrosurgical handpiece, the switch having a plurality of contacts comprising:

• a cable having a plurality of individually insulated separate electrical conductors each with a conductive core surrounded by a dielectric;
• an insulating switch base of a dielectric material and generally planar in shape, the insulating switch base with a top and bottom larger than an edge surrounding thereabout;
• configured openings extending at least through the top of the insulating switch base and at least one edge thereof, the configured openings each ready to receive at least one of the insulated separate conductors;
• a section within each configured opening located to redirect, by bending the conductor during insertion and after contact, each insulated separate conductor from its respective configured opening towards the bottom to locate and support the insulated separate conductors within the insulating switch base;
• a switch lead frame of an electrical conductor formed to include proximal ends bent to conjugate with configured openings, each proximal end having an insulation displacement connector;
• a resilient member centered on the switch lead frame as a moveable contact generally through the plane of the top from one stable position to another position upon application of force on the resilient member and generally normal to the top, the resilient member conductively associated with one of the insulation displacement connectors and extending dismally from at least one proximal end;
• a contoured arm on the lead frame and distal of but conductive with another insulation displacement connector, the contoured arm positionable adjacent the resilient member beneath the top as an opposed contact, the contoured arm spaced from the resilient member in a normally switch open condition but capable of momentary engagement by the resilient member when in a switch closed position;
• a common terminal on the lead frame juts distally from the resilient member as a single connection, the common terminal connects to an electrode of the electrosurgical handpiece;
• several recesses in the top of the insulating switch base each formed to support and retain the switch lead frame with its resilient member and the contoured arm in position to be normally open a preset distance of switch travel but capable of engagement therebetween to complete conductive connection therethrough;
• a raised dimple on the contoured arm to engage within its recess to secure the position of the contoured arm relative to the resilient member as a switch gap;
• a restriction in each recess near its respective configured opening for passage of the contoured arm;
• an interference channel extends cantilevered from the edge of the insulating switch base near the configured openings to hold the cable relative to the configured openings, the interference channel dimensioned to squeeze the cable after insertion therein and be a strain relief;
• an aperture in the surface of each insulation displacement connector;
• a slot on each insulation displacement connector, each slot open downwardly toward the bottom of the insulating switch base for receiving one insulated separate conductor, the slot of a width so as to move the insulation and make electrical connection between the insulation displacement connector and the conductive core of the insulates separate conductor;
• a pair of cooperating barbs angled outwardly from each insulation displacement connector to secure within its configured opening upon installation after aligning each insulation displacement connector with its configured opening and seating the switch lead frame within the recesses;
• passages positioned in the insulating switch base;
• an insulating membrane is attached from edge to edge over the switch lead frame positioned within the recesses of the insulating switch base, and
• a molded encasement is applied to the bottom and edges of the insulating switch base and over portions of the membrane near the edges leaving at least the membrane over the resilient member unencased.