7 results about "Posterior fixation" patented technology

The application provides a controllable self-expanding intramedullary nail internal fixation system for long bone fracture, belonging to the technical field of orthopedic medical instruments, and comprising a self-expanding intramedullary nail, a visible controllable self-expanding platform and a locking nail; the self-expanding intramedullary nail comprises a locking hole and an expandable support; the locking hole is arranged at the proximal end of the self-expanding intramedullary nail and is matched with the locking nail to fix the proximal end of the self-expanding intramedullary nail; the expandable support is arranged at the distal end of the self-expanding intramedullary nail after expansion to fix the distal end of the self-expanding intramedullary nail. The visible controllable self-expanding platform is in communication with the expandable support and can display the expansion size, and the self-expanding intramedullary nail can be prevented from being expanded too large to affect the medullary cavity by precalculating the expansion size.

The application provides a snake bone tube and an endoscope. The snake bone tube comprises a front fixing part, a rear fixing part and a plurality of snake bones. The first end of the snake bone is provided with two convex connecting parts. The second end of the snake bone is provided with two concave connecting parts. The convex connecting part comprises a first convex part, a second convex part and a connecting part. The first convex part protrudes from the end surface of the snake bone in the axial direction. The second convex part is connected to the first convex part through the connecting part and protrudes from the first convex part. The concave connecting part comprises a groove and two supporting plate parts. The two supporting plate parts are respectively arranged on the inner walls on the opposite sides of the groove. A clamping groove is arranged between the two supporting plate parts. The convex connecting part of the rear snake bone is movably connected to the concave connecting part of the front snake bone. The first convex part is arranged in the groove and on the supporting plate part. The connecting part is arranged in the clamping groove. The second convex part passes through the clamping groove and is adjacent to the inner wall of the front snake bone. The endoscope comprises the snake bone tube. The application has the advantages of convenient production and assembly and difficulty in disconnection.

The utility model discloses a kind of absorbable rib fixation nails, made of high molecular absorbable material integrated, including shank part and the clamping portion of both ends of shank part, clamping portion is equipped with bifurcation structure with opening towards non-connection shank part one end, at least one branch outside of bifurcation structure is equipped with inverted tooth structure, inverted tooth structure end is conical or triangular, the width of bifurcation structure is greater than the width of shank part.The utility model can be made into nail body by absorbable material, clamping portion end bifurcation, inverted tooth structure can be fixed after being expanded in marrow cavity and increasing friction, wide conical end is easily placed into marrow cavity and can play anti-rotation, anti-removal effect, fixed firm and not easy to displace, without suture reinforcement to prevent affecting periosteal blood supply and nerve compression, after fracture healing, fixation nail can be degraded and absorbed, without secondary operation removal, after absorption, chest CT, MRI examination has no influence, more promotional, can better improve the user's use experience.

The application relates to the technical field of rib fracture orthotopic fixation, and discloses a rib fracture orthotopic fixation device for thoracic surgery, which comprises a front fixing plate and a rear fixing plate, a strip-shaped box is arranged on the front fixing plate, a plurality of movable sliding blocks are arranged on the two sides of the strip-shaped box, first strip-shaped plates are fixed on the two sides of the strip-shaped box, side fixing plates are fixed on the sliding blocks, second strip-shaped plates are fixed on one side of the sliding blocks, a plurality of equidistantly-distributed miniature damping rods are fixed on the first strip-shaped plates, and a plurality of air bags are arranged on the front fixing plate; in the application, the speed of the side fixing plate is consistent with the speed of thoracic retraction, so that stable reduction is achieved, impact fitting between the side fixing plate and the thorax is avoided, beating is formed, the comfort of the patient is improved, the fixing position of the side fixing plate does not need to be frequently adjusted, automatic alarm can be realized when the patient performs large-amplitude action, and the purpose of automatically monitoring the movement amplitude of the patient can be achieved.

Implementations of the disclosed systems and methods include medical implants, such as spinal implants for posterior fixation. According to some implementations, the implant includes a tulip configured to receive a rod, along with a set screw configured to fix the rod in place within the tulip. In some cases, the set screw is configured to selectively rotate in a first direction to tighten and to selectively counter-rotate in a second direction to loosen. According to some implementations, the implant includes a mechanical stop configured to prevent undesirable counter-rotation of the set screw to thereby resist loosening of the set screw. Other implementations are discussed.

This utility model belongs to the field of medical device technology, specifically relating to a lumbar spine protector. This lumbar spine protector includes a lumbar spine fixation bracket and a back strap. The lumbar spine fixation bracket includes a front fixation plate and a rear fixation plate arranged front to back, side plates respectively arranged on both sides of the front and rear fixation plates, and a detachable rear support plate arranged inside the rear fixation plate for supporting the lumbar spine. One end of the side plate is hinged to the front fixation plate and the other end is hinged to the rear fixation plate. The rear fixation plate includes multiple rear pieces arranged at intervals along the vertical direction and two pressure-reducing elastic bands arranged opposite each other between adjacent rear pieces to deform the adjacent rear pieces. In use, under the action of the multiple rear pieces and the two pressure-reducing elastic bands arranged opposite each other between adjacent rear pieces to deform the adjacent rear pieces, the rear fixation plate achieves a small left-right sway between adjacent rear pieces, allowing the patient a small range of motion, which improves patient comfort without affecting the support of the lumbar spine fixation bracket.