Abstract: A polyaxial driver system for inserting and setting the angular orientation of an implant includes an elongated component and a distal component. The elongated component extends along a main axis and includes an elongated tubular sheath and an elongated shaft disposed within the tubular sheath. The distal component is pivotally connected to a distal end of the elongated shaft and includes a tubular body extending along the main axis and a spherical head dimensioned to fit and move freely within the tubular body. A proximal end of the elongated shaft includes a first set of outer threads and a proximal end of the elongated tubular sheath includes inner threads shaped and dimensioned to engage the first set of outer threads of the elongated shaft. Rotating the elongated tubular sheath clockwise or counter-clockwise moves the elongated shaft forward or backward along the main axis, respectively.

Abstract: A ratchet tool, including a shaft defining a longitudinal axis; a handle coaxial to the shaft; a first gear immovably fixed to the shaft and disposed in the handle; a second gear rotatably and longitudinally movable with respect to the shaft, where the second gear engages the first gear to limit torque transfer from the handle to the shaft in a first direction and provides substantially zero torque transfer in a second direction; a first spring disposed between the second gear and the handle; a third gear rotatably and longitudinally movable with respect to the shaft, where the third gear engages the first gear to limit torque transfer from the handle to the shaft in the second direction and provides substantially zero torque transfer in the first direction; and a second spring disposed between the third gear and the handle.

Abstract: A ratchet tool, including a shaft defining a longitudinal axis; a handle coaxial to the shaft; a first gear immovably fixed to the shaft and disposed in the handle; a second gear rotatably and longitudinally movable with respect to the shaft, where the second gear engages the first gear to limit torque transfer from the handle to the shaft in a first direction and provides substantially zero torque transfer in a second direction; a first spring disposed between the second gear and the handle; a third gear rotatably and longitudinally movable with respect to the shaft, where the third gear engages the first gear to limit torque transfer from the handle to the shaft in the second direction and provides substantially zero torque transfer in the first direction; and a second spring disposed between the third gear and the handle.

Abstract: A polyaxial driver system for inserting and setting the angular orientation of an implant includes an elongated component and a distal component. The elongated component extends along a main axis and includes an elongated tubular sheath and an elongated shaft disposed within the tubular sheath. The distal component is pivotally connected to a distal end of the elongated shaft and includes a tubular body extending along the main axis and a spherical head dimensioned to fit and move freely within the tubular body. A proximal end of the elongated shaft includes a first set of outer threads and a proximal end of the elongated tubular sheath includes inner threads shaped and dimensioned to engage the first set of outer threads of the elongated shaft. Rotating the elongated tubular sheath clockwise or counter-clockwise moves the elongated shaft forward or backward along the main axis, respectively.

Abstract: Replaceable components for use with a needleless syringe delivery device are provided. One replaceable component is a cartridge having a source of particles and a source of compressed gas. Another replaceable component is a nozzle assembly having a particle acceleration nozzle and a coaxial filter element. Reusable needleless syringe devices which include these replaceable components are also provided.

Abstract: Replaceable components for use with a needleless syringe delivery device are provided. One replaceable component is a cartridge having a source of particles and a source of compressed gas. Another replaceable component is a nozzle assembly having a particle acceleration nozzle and a coaxial filter element. Reusable needleless syringe devices which include these replaceable components are also provided.