Abstract: A bone screw kit includes a support member, a screw, an extension sleeve, a connecting rod, a locking screw, a screw driver and an extension sleeve remover. The support member has two wings. An external wall of one axial end of the screw driver has ribs and one first snap. The first snap has oppositely a first outer diameter and a second outer diameter less than the first outer diameter. A through hole having a second snap is disposed on the locking screw furnished thereinside with grooves. The second snap has a first inner diameter less than the first outer diameter but larger than the second outer diameter. The locking screw and the screw driver are disposed in the support member and the extension sleeve. The extension sleeve having two extension wings sleeves the support member. Engagement structures are provide to engage the wing and the inner extension wing.

Abstract: A bone screw kit includes a support member, a screw, an extension sleeve, a connecting rod, a locking screw, a screw driver and an extension sleeve remover. The support member has two wings. An external wall of one axial end of the screw driver has ribs and one first snap. The first snap has oppositely a first outer diameter and a second outer diameter less than the first outer diameter. A through hole having a second snap is disposed on the locking screw furnished thereinside with grooves. The second snap has a first inner diameter less than the first outer diameter but larger than the second outer diameter. The locking screw and the screw driver are disposed in the support member and the extension sleeve. The extension sleeve having two extension wings sleeves the support member. Engagement structures are provide to engage the wing and the inner extension wing.

Abstract: A device for expanding spacing between spinous processes includes a first supporter, a second supporter and a pin. The first supporter includes a first protrusion, a second protrusion opposing the first protrusion, and a first concave portion formed between the first protrusion and the second protrusion for supporting one spinous process. The second supporter includes a third protrusion, a fourth protrusion opposing the third protrusion, and a second concave portion formed between the third protrusion and the fourth protrusion for supporting another spinous process. The pin pivots the first supporter to the second supporter so as to provide the device an expansion state and a close state for removal and installation between two spinous processes. In addition, a method for expanding spacing between spinous processes is also provided.

Abstract: A device for expanding spacing between spinous processes includes a first supporter, a second supporter and a pin. The first supporter includes a first protrusion, a second protrusion opposing the first protrusion, and a first concave portion formed between the first protrusion and the second protrusion for supporting one spinous process. The second supporter includes a third protrusion, a fourth protrusion opposing the third protrusion, and a second concave portion formed between the third protrusion and the fourth protrusion for supporting another spinous process. The pin pivots the first supporter to the second supporter so as to provide the device an expansion state and a close state for removal and installation between two spinous processes. In addition, a method for expanding spacing between spinous processes is also provided.