5 results about "Femoral head" patented technology

A bone remover for removing bones such as a femoral bone head in a minimally invasive surgical procedure comprises a shaft having a handle at a proximal end, a screw portion at a leading end and tapered toward the leading end, and a blade portion at the leading end of the screw portion. Helical threads of the screw portion are on a surface of, and coaxial with, the shaft. The blade portion is plate-shaped and tapered toward the leading end, and has a cutting blade attained by at least one raked surface formed in a lateral end portion. A proximal side of the raked surface and a top surface at the leading end of the threaded portion are either directly connected, or connected by an extension surface at the proximal end of the raked surface and the top surface at the leading end of the threaded portion.

A ceramic femoral resurfacing head prosthesis (110) comprises a ceramic convex outer contact surface (112) engagable with an acetabulum of a patient or an acetabular cup prosthesis and a concave inner fixation surface (114) having an inner-land portion (128), the ceramic convex outer contact surface (112) and the concave inner fixation surface (114) extending to intersect each other at a rim (116). A ceramic stem (120) projects from the concave inner fixation surface (114), and is adapted to be received by a stem bore. The concave inner fixation surface (114) includes a skirt (134) which is cylindrical or substantially cylindrical, or frusto-conical or substantially frusto-conical, and at least one circumferentially elongate recess (136) at the skirt (134).

The articulated reverse hip prosthesis includes an acetabular cup with an opening in the cup's central portion, which is implanted into the acetabular cavity. The opening has a circular, extended wall that protrudes into the cup's recess a distance at least equal to the diameter of the opening. The cup's inward extension provides a female Morse taper suitable for accepting the male Morse taper post of the acetabular ball. After implantation of the acetabular cup, the surgeon can simply secure the cup to the acetabular bone using several screws, without the interference of a central peg (as with previous implants). The femoral ball is then attached to the cup via the central Morse taper.

The invention relates to the technical field of clinical examination and diagnosis, in particular to a construction method and device of a traumatic femoral head necrosis risk prediction model, and the method comprises the steps: determining candidate diagnosis markers; screening out differentially expressed candidate features as a preliminary screening feature set based on the candidate diagnostic markers; constructing a traumatic femoral head necrosis risk prediction model by using a plurality of differentially expressed candidate features in the preliminary screening feature set and a preset machine learning algorithm to determine key biomarkers, forming a final feature set, and updating the traumatic femoral head necrosis risk prediction model; therefore, the problems that in existing research, due to neglect of the influence of nonlinear correlation possibly existing between diagnostic markers and the synergistic effect in disease development, a generalized and universal prediction and diagnosis model cannot be established, and then deep exploration of a potential molecular biology mechanism and accurate evaluation and intervention of the early stage of diseases are limited are solved.