46 results about "Head bones" patented technology

A polyaxial bone screw having a bone implantable shank, a head and a retaining ring. The retaining ring includes an outer partial hemispherical surface and an inner bore with radially extending channels and partial capture recesses. The shank includes a bone implantable body with an external helical wound thread and an upwardly extending capture structure. The capture structure includes at least one spline which extends radially outward and has a wedged surface that faces radially outward therefrom. The capture structure operably passes through a central bore of the retaining ring while the spline passes through a suitably shaped channel so that the spline becomes positioned above the head at which time the shank is rotated appropriately and the shank is drawn back downwardly so that the spline engages and seats in the capture recess. The head includes an internal cavity having a spherical shaped surface that mates with the ring surface and has a lower restrictive neck that prevents passage of the ring once the ring is seated in the cavity.

A polyaxial bone screw having a bone implantable shank, a head and a retaining ring. The retaining ring includes an outer partial hemispherical surface and an inner bore with radially extending channels and partial capture recesses. The shank includes a bone implantable body with an external helical wound thread and an upwardly extending capture structure. The capture structure includes at least one spline which extends radially outward and has a wedged surface that faces radially outward therefrom. The capture structure operably passes through a central bore of the retaining ring while the spline passes through a suitably shaped channel so that the spline becomes positioned above the head at which time the shank is rotated appropriately and the shank is drawn back downwardly so that the spline engages and seats in the capture recess. The head includes an internal cavity having a spherical shaped surface that mates with the ring surface and has a lower restrictive neck that prevents passage of the ring once the ring is seated in the cavity.

The invention discloses an intracerebral hematoma puncture guide apparatus capable of providing precise positioning and relates to the field of medical instruments. The apparatus can adapt to different head sizes by adjuring relative distances between threaded holes in a single-fork slide rule and a double-fork base; the apparatus is reliably and fixedly connected to the head of a patient through tips of bone pegs being directly abutted to the head bone layer; puncture points and positioning points are spatially positionally adjusted through the combination of vertical side-to-side translation of a cross slider component in a spatial positioning device and rotational motion of a spherical hinge component, and it is ensured that the positioning points and the puncture points cover all surgical area for intracerebral hematoma puncture; collinear structural restraint of the positioning points and puncture points is maintained through the coaxial coplanar relationship of a guide tube seat component and a positioning seat component; through the guiding function of a guide tube seat, it is ensured that a puncture path is extended along two-point lines of the positioning points and puncture points; therefore, the apparatus provided by the embodiment of the invention can ensure surgical precision.

The invention relates to a method for pickling pork head meat. For the existing method for pickling the pork head meat, the process is is not reasonable, and the pork head meat with a specific flavor can not be prepared by using the existing method. The method disclosed by the invention comprises the following procedures of: treating raw material meat, pickling, rinsing and drying, cooking, packaging and sterilizing; in the raw material meat treating procedure, a pork head is used as a raw material, and the pork tongue and the pork face are taken off; the pork head is cut into two halves and the pork brain is taken out to obtain the pork head bones; in the pickling procedure, the pork head bones, the pork tongue and the pork face are pre-cooled to be at the temperature lower than 10 DEG C; pepper and salt are coated to pickle for 28-32 days; at the first four days, a cylinder containing the raw materials and the auxiliary materials is reversed in every day; from the fifth day, the cylinder containing the raw materials and the auxiliary materials is reversed every three days; the cooking procedure is carried out after the rinsing and the drying; the pork head bones are put into boiled water to be boiled for 42-48 minutes to obtain pork head bone meat; the pork nose, the pork tongue and the pork face are steamed by steam at 100 DEG C for 18-22 minutes; and the pork ears are steamed by the steam at 100 DEG C for 28-32 minutes; and the finished-product pickled pork head meat is obtained after the packaging and sterilizing procedures are carried out. According to the method disclosed by the invention, the process is reasonable and the manufactured pork head meat has a specific flavor.