Abstract: Provided is a power pack comprising an AC power connector configured to be connectable to an outside AC power source; a rectification and filtering unit configured to be in electronic communication with the AC power connector; a controlling unit; and a medical device connector configured to be connectable to a medical device, the medical device connector configured to be in electronic communication with the controlling unit, wherein the power pack is configured to be capable of detecting a connection of the medical device with the power pack and also capable of demonstrating the connection through an outside indicator disposed on the exterior of the power pack once the medical device is connected to the power pack through the medical device connector.

Abstract: A cutting instrument comprising: an outer tube; an inner tube rotatably disposed within the outer tube; the inner tube comprising an opening having a leading edge and a trailing edge; and the outer tube comprising a window having a leading edge and a trailing edge; at least one of the leading edge of the opening, the trailing edge of the opening, the leading edge of the window and the trailing edge of the window comprising a canted edge; and the window of the outer tube being adapted to be completely blocked by the inner tube during a phase of the rotation of the inner tube within the outer tube.

Abstract: Disclosed herein is a medical device. The medical device includes two coaxially aligned solenoids and a cannulated armature configured to be received within the two coaxially aligned solenoids.

Abstract: A cutting instrument comprising: an outer tube; an inner tube rotatably disposed within the outer tube; the inner tube comprising an opening having a leading edge and a trailing edge; and the outer tube comprising a window having a leading edge and a trailing edge; at least one of the leading edge of the opening, the trailing edge of the opening, the leading edge of the window and the trailing edge of the window comprising a canted edge; and the window of the outer tube being adapted to be completely blocked by the inner tube during a phase of the rotation of the inner tube within the outer tube.

Abstract: A cutting instrument comprising: an outer tube; an inner tube rotatably disposed within the outer tube; the inner tube comprising an opening having a leading edge and a trailing edge; and the outer tube comprising a window having a leading edge and a trailing edge; at least one of the leading edge of the opening, the trailing edge of the opening, the leading edge of the window and the trailing edge of the window comprising a canted edge; and the window of the outer tube being adapted to be completely blocked by the inner tube during a phase of the rotation of the inner tube within the outer tube.

Abstract: A high inertance liquid piston engine-compressor that is lightweight, portable and for use with pneumatically actuated devices that may have periods of inactivity between periods of pneumatic use. The engine-compressor provides a power generation system that is for use with mobile or portable devices which need a portable long lasting energy source.

Abstract: Disclosed herein is a high inertance liquid piston engine-compressor and method of use thereof. The high inertance engine-compressor is light weight, portable and for use with pneumatically actuated devices that may have periods of inactivity between periods of pneumatic use. The present invention provides a power generation system that is for use with mobile or portable devices which need a portable long lasting energy source.