Improved handle assembly for a dental or medical tool

A handle for attachment to a source selected from the group consisting of suction, air, and liquid at a rear end and attached to a tool selected from a dental tool and a medical tool at a front end, the handle for attachment comprising:

• an elongated handle valve body defining a channel, the channel running through a length of the elongated handle valve body;
• a V-shaped indentation formed in a top surface of the elongated handle valve body;
• a spherical chamber defined by the elongated handle valve body and extending upwardly from the V-shaped indentation;
• a pair of side openings formed on opposite sides of the spherical chamber;
• and
• a ball valve rotatably positioned within the spherical chamber, the ball valve comprising:
• a ball defining a ball channel, the ball channel running through a center of the ball;
• and
• a pair of spindle arms formed on the ball, the spindle arms located on opposite sides of the ball and extending out of the pair of side openings;
• and
• a handle coupled to the spindle arms, the handle for rotating the ball about the spindle arms.

A handle for attachment to a source selected from the group consisting of suction, air, and liquid at a rear end and attached to a tool selected from a dental tool and a medical tool at a front end, the handle for attachment comprising:

• an elongated handle valve body;
• a channel having a first open end and a second open end running along a length of the elongated handle valve body, the first open end at an opposite end of the elongated handle valve body from the second open end;
• a spherical chamber defined by the body and positioned within a path of the channel and having openings at each transverse end;
• an indentation formed in a top surface of the body and extending across a width of the elongated handle valve body, wherein the spherical chamber extends up from the indentation;
• and
• a ball valve positioned within the spherical chamber, wherein the ball valve comprises:
• a ball;
• a ball channel running through a center of the ball and having a pair of open ends;
• a pair of spindle arms, wherein each spindle arm is in axial alignment and located on opposite sides of the ball;
• a socket formed in each spindle arm;
• a handle having a U-shaped body coupled to the ball;
• and
• a pin member formed at an end of each leg of the U-shaped body, each pin inserted into a corresponding socket securing the handle to the ball.