Handle assembly having hand activation for use with an ultrasonic surgical instrument

An ultrasonic surgical instrument comprising:

• a housing for accepting a transducer wherein the housing defines a first housing surface and a second housing surface, and the transducer defines a longitudinal axis and is configured for electrical connection to a generator;
• a first and second switch positioned on the first housing surface for providing an electrical signal to the generator for controlling a first and second level of ultrasonic energy delivered by the transducer, a first partition positioned between the first and second switch, wherein the first partition defines a partition surface that is higher than the first housing surface;
• and
• a third and fourth switch positioned on the second housing surface and for providing an electrical signal to the generator for controlling the first and second level of ultrasonic energy delivered by the transducer, a second partition positioned between the third and fourth switch, wherein the second partition defines a partition surface that is higher than the second housing surface.

An ultrasonic surgical instrument comprising:

• a housing for accepting a transducer wherein the housing defines a first housing surface and a second housing surface;
• a first switch positioned on the first housing surface and electrically connected to a generator for providing an electrical signal to the generator;
• a second switch positioned on the first housing surface;
• a first partition positioned between the first switch and the second switch, wherein the first partition defines a first partition surface that is higher than the first housing surface;
• a second partition adjacent to at least one of the first and second switches, wherein the second partition defines a second partition surface that is higher than the first housing surface;
• a third switch positioned on the second housing surface and electrically connected to the generator for providing an electrical signal to the generator;
• a fourth switch positioned on the second housing surface;
• a third partition positioned between the third switch and fourth switch, wherein the third partition defines a third partition surface that is higher than the second housing surface;
• and
• a fourth partition adjacent to at least one of the third and fourth switches, wherein the fourth partition defines a fourth partition surface that is higher than the second housing surface.