32 results about "Pelvic ring" patented technology

The instant invention is a novel method for definitive pelvic stabilization. The method uses the already established principles of anterior external fixation combined with internal hardware placed in a minimally invasive fashion. Pedicle screws are affixed to the ilia and a rigid, bowed fixation rod is connected between the pedicle screws. Preferably the pedicle screws are attached to the supra-acetabular area of each of the ilium of the pelvis and the fixation rod is bowed anteriorly away from the pelvis.

A multiaxial combined and matched type anti-infection semi-pelvic false body comprises an acetabulum and net cup plate wing which is arranged on the top of the acetabulum and can be fixed on a reserved hip bone wing. Two to three universal joints are arranged on the back of the net cup plate wing. The universal joints are opened with a card slot which can be connected with a universal bar. The invention can arbitrarily adjust the height and the point of view of the acetabulum through the combination of the universal joints and the acetabulum to realize the truly anatomical location reconstruction of the hip joint which is not affected by the resection range. The reconstruction of the connection of the pelvic ring and the acetabulum takes the way of universal multi-axis in order to conveniently adjust the location of the acetabulum, thereby assuring the coherence of the limb length after being reconstructed. The location of the acetabulum can be adjusted according to the removal situation of the soft tissue in the operation. Through the sacrum and the contact point of the universal screw of the ischiopubic multi-axis point driven into the pelvic ring, especially multi-nail fixationdriven into the lumbar, the hardening stress can be scattered, the hardening stress concentration can be reduced to reduce the complicating disease such as looseness and broken nails.

The invention discloses an individualized 3D printed titanium alloy sacral prosthesis, which comprises a lumbar joint, an iliac joint and a connecting part. The lumbar junction is a hollow columnar porous structure with a fan-shaped tail fin bionically designed according to the shape of the sacral 1 vertebra, and the osseointegrated surface with the lower endplate of the lumbar 5 vertebra is designed with a porous bone-like trabecular structure, and is designed with 2 screws holes; the iliac joint is a hollow polyhedron designed to imitate the auricular surface of the ilium, and the ilium joint is designed to imitate the porous structure of the trabecular bone, and is designed with four longitudinally symmetrically distributed screw holes; the joint is hollow, Porous, tubular structure that connects the lumbar junction to the iliac junction. The present invention reconstructs the pelvic ring structure through the titanium alloy sacral prosthesis, fixes it with screws and grafts the bone in the hollow structure, so as to achieve the biological healing effect of early mechanical stability and strong later stage; the reconstructed sacral defect has beautiful appearance and mechanical stability, and reduces the distance prosthetic failure rate.

The invention relates to the technical field of medical devices, particularly to a posterior pelvic ring fracture minimally-invasive fixator which is used for the fixation of unstable posterior pelvic ring fractures such as sacroiliac dislocation or sacrum fractures. The posterior pelvic ring fracture minimally-invasive fixator is composed of a connection rod and fixing screws. The connection rod comprises a left connection rod (1) and a right connection rod (2), the left connection rod and the right connection rod are respectively composed of a threaded portion and an unthreaded portion and are connected into a whole through the connection of a threaded portion (3) and a threaded portion (4). The unthreaded portions at both ends of the connection rod are respectively provided with screw holes A and screw holes B, a needle guide channel is arranged in the center of the connection rod, and the tail end of the fixing screw (6) is a nut (7). The posterior pelvic ring fracture minimally-invasive fixator is simple in structure, easy to operate, minimal in invasion, beneficial to the healing of a wound and good in counter-rotation effect, can provide a reliable reduction fixation, and can effectively fix unstable posterior pelvic ring fractures such as the sacroiliac dislocation and the sacrum fractures, thereby facilitating restoring to a normal anatomical structure.

The invention relates to a total sacral artificial prosthesis, which comprises a defect main body connected between the osteotomized end of the lumbar vertebral body and the osteotomized ends of the left and right iliac crests. The main body of the defect has three contact surfaces. The bone ends are in contact with the vertebral body contact surface, and the left and right ilium bone contact surfaces are in contact with the left and right ilium osteotomy respectively, and the vertebral body contact surface and the left and right ilium contact surfaces are all porous structures ; There is a hollow herringbone-shaped soft tissue attachment part between the vertebral body contact surface of the defect body and the left and right ilium osteotomy surfaces, and the soft tissue attachment part is also a pore-like structure; there are also several fixation holes on the defect body. The component fixes the defect main body between the osteotomized ends of the lumbar vertebral body and the osteotomized ends of the left and right ilium. The present invention adopts the herringbone design closest to the human bone structure, which can realize the reconstruction of the lumbar-iliac, posterior pelvic ring, and fusion of the front vertebral body, and realize the most stable mechanical environment of the "triangular" support, and can realize the reconstruction of the bone structure. Sexual fusion can be significantly improved from short-term structural recovery to long-term patient function and quality of life.