Double Offset Surgical Tool Handle Assembly Having A Locking Linkage Aligned Along Two Different Planes

A surgical tool handle, which comprises:

• a) a housing providing a linkage chamber extending from a proximal housing grip end to a distal housing tool end for receiving a tool;
• b) a tool linkage at least partially housed within the linkage chamber, the tool linkage comprising:
• i) a handle lever attached to the housing by a proximal housing pivot pin to thereby provide a first pivotable connection between the tool linkage and the housing;
• ii) a locking pawl attached to the housing by a distal housing pivot pin to thereby provide a second pivotable connection between the tool linkage and the housing;
• and
• iii) a main linkage comprising a proximal main linkage end connected by a first free pivot pin to the handle lever adjacent to the proximal housing end in a third pivotable connection and a distal main linkage end connected by a second free pivot pin to the locking pawl adjacent to the distal housing end in a fourth pivotable connection;
• and
• c) wherein the handle lever is pivotable about the proximal housing pivot pin from a first, opened position spaced a maximum distance along a range of motion from the proximal housing end to a second, closed position spaced at a closer distance along the range of motion relative to the proximal housing end than the first position to thereby cause the main linkage, connected to the handle lever by the first free pivot pin, to move in a proximal direction toward the proximal housing end, to thereby cause the locking pawl, connected to the distal main linkage end by the second free pivot pin, to pivot with respect to the housing on the distal housing pivot pin from an open configuration ready to receive a tool for attachment to the housing to a closed configuration engageable with a tool supported at the distal housing tool end.