Abstract: A surgical implant, typically a cervical plate assembly, comprises a plate having at least two apertures and two screw threaded fastening devices for securing the plate to bone. Each aperture in the plate has an annular groove intermediate opposite ends of the aperture and each fastening device comprises an outer screw and an inner plug. The screw has a head at one end, a tip at the other end, an externally threaded shank between the head and the tip and an internal bore extending axially through the head and at least part way into the shank for receiving the inner plug. The head comprises a plurality of resiliently deformable fingers separated by one another by axially extending slits. Each finger has an outwardly projecting rib extending circumferentially of the head intermediate opposite ends of the finger for snap fit engagement in the annular groove of a respective plate aperture.

Abstract: A comfortable, self-adjusting, protective helmet made from a process of insert molding. The helmet comprises an armature or insert made of a porous material that is embedded in the layers of the helmet to connect the structural parts of the helmet to one another. The armature as used in the helmet also serves several other functions which include hinging and sizing. A retention system is strategically located on the helmet to provide increased stabilization of the helmet on the wearer's head. One embodiment of this invention is an insert-molded helmet that can be converted into a pouch. A further embodiment of this invention includes a protrusion at the back of a helmet suitable for a compartment.

Abstract: A comfortable, self-adjusting, protective helmet made from a process of insert molding. The helmet comprises an armature or insert made of a porous material that is embedded in the layers of the helmet to connect the structural parts of the helmet to one another. The armature as used in the helmet also serves several other functions which include hinging and sizing. A retention system is strategically located on the helmet to provide increased stabilization of the helmet on the wearer's head. One embodiment of this invention is an insert-molded helmet that can be converted into a pouch. A further embodiment of this invention includes a protrusion at the back of a helmet suitable for a compartment.

Abstract: The pedicle attachment assembly comprises a pedicle attachment device having a head. A polyaxial housing has a through bore comprising a base portion and two posts upstanding from the base portion, the posts defining therebetween a slot for receiving a rod. A saddle-shaped element is disposable in the slot and has a part cylindrical recess in an upper surface for engagement in use with the rod. The saddle-shaped element has a convex lower portion for engagement in a complimentary concave recess in an upper surface of the head of the attachment device. The lower surface of the head of the attachment device and the lower end of the through bore in the housing have complementary part spherical surfaces for engagement with one another. A cap assembly is provided for clamping the rod in the housing.

Abstract: A comfortable, self-adjusting, protective helmet made from a process of insert molding. The helmet comprises an armature or insert made of a porous material that is embedded in the layers of the helmet to connect the structural parts of the helmet to one another. The armature as used in the helmet also serves several other functions which include hinging and sizing. A retention system is strategically located on the helmet to provide increased stabilization of the helmet on the wearer's head. One embodiment of this invention is an insert-molded helmet that can be converted into a pouch. A further embodiment of this invention includes a protrusion at the back of a helmet suitable for a compartment.

Abstract: A new process for making headgear. The process comprises the step of insert molding an armature into helmet segments to produce a protective helmet having superior characteristics. The process also comprises the step of strategically locating a retention system on the helmet to provide increased stabilization of the helmet on the wearer's head. The process further comprises the step of attaching an improved strap guide to the helmet. One embodiment of this invention is a process for making an insert-molded helmet that can be converted into a pouch. Another embodiment of this invention is a process for making a helmet that includes a protrusion at the back of a helmet suitable for a compartment.