12 results about "LONG BONE FRACTURE" patented technology

This invention discloses a long bone fracture robot, relating to the field of medical robot technology. The robot includes an upper fixation ring, a lower fixation ring, and six sets of sliding components connected between them. These six sets of sliding components are spatially distributed and form a parallel mechanism. Each sliding component includes a lead screw assembly and a drive assembly. The lead screw assembly includes a lead screw and at least one U-shaped joint, with the U-shaped joint connecting the end of the lead screw to the corresponding fixation ring. The two rotation axes of the U-shaped joint maintain a non-compatibility distribution structure with a preset distance in space to increase the joint's swing angle range and improve multi-directional load-bearing capacity. The drive assembly converts the rotational motion of the motor into the linear motion of the lead screw through gear transmission, realizing the extension and retraction of the sliding components. This invention can avoid unusual configurations within a larger workspace, providing safer, more precise, and more efficient assistance in fracture reduction surgery.

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.

This utility model relates to the field of orthopedic medical device technology, specifically to an adjustable drilled plate integrated fixation clamp for long bone fractures. It includes a first clamp body and a second clamp body, which are cross-hinged. The top of the first clamp body has a first clamping part, and the inner surface of the first clamping part has several short pins. The top of the second clamp body has a second clamping part, which includes a fixing plate and a clamping block. The clamping block is slidably connected to the inner side of the fixing plate, and the fixing plate has several through holes. This utility model not only provides stable clamping but also features fracture reduction and fixation, adaptive clamping of multiple types of plates, and drilled screw implantation.

The invention discloses a novel extensible long intramedullary rod and a matched tool, and relates to the technical field of medical instruments, the novel extensible long intramedullary rod comprises a female rod and a male rod, one end of the female rod is provided with a fixed tip, the other end of the female rod is provided with a blind hole, the male rod is sleeved with the blind hole, the fixed tip is used for being connected with the epiphysis of the far end of a long bone, and the end of the male rod is flush with an implantation opening. And the length of the male rod sleeved into the female rod is at least 1 / 2 of the length of the female rod. The extensible long intramedullary rod can effectively fix a long bone, prevent fracture of the long bone and maintain the shape of the long bone, can gradually achieve the purpose of extension along with the growth of the bone, can better maintain the mechanical axis of the bone, has a stronger protection effect on the fracture end, is particularly suitable for being applied to special patients in the department of orthopedics of children, and has a wide application prospect. And intraoperative and postoperative protection of lower limb long bone malformation and fracture caused by osteogenesis insufficiency and congenital long bone artificial joints can be realized.

The invention belongs to the technical field of medical instruments, and discloses a treatment device integrating fracture reduction and fixation, the treatment device integrating fracture reduction and fixation comprises a first fixing body, the first fixing body is hinged with a second fixing body through a first convex ball, and the second fixing body is movably connected with a third fixing body through a movable rod; and the spiral joint is rotationally arranged on the third fixing body through the second convex ball. A set of complete reduction operation procedures are established for shortening displacement, rotating displacement and lateral displacement of the fracture difficult to reduce, the problems of shortening, rotating and lateral displacement of the fracture are solved in sequence step by step, and finally the purpose of anatomical reduction of the fracture is achieved. And a plurality of needle placing holes are reserved in the device and are arranged longitudinally and transversely, the device is suitable for various different types of long bone fractures, the needle holes are large, fixing needles with different diameters can be placed, screws directly abut against the fixing needles, and the application range is wide.

The application discloses a long bone fracture external fixing frame with distraction and pressurization functions, comprising a plurality of bone nails, at least two connecting frames and a bidirectional screw rod. The bone nail comprises a sharp part, a threaded rod part and a connecting head part; the connecting frame is provided with a plurality of through holes and a plurality of locking members; the locking members are arranged correspondingly beside the through holes or the connecting head parts; the connecting frame is provided with a threaded adjusting hole; one end of the bidirectional screw rod is provided with a first threaded section, and the other end is provided with a second threaded section with a rotation direction opposite to that of the first threaded section; the bidirectional screw rod is provided with a holding part. The through holes of the connecting frame are distributed at intervals along the length direction, the assembly hole positions can be selected flexibly according to the fracture positions and the bone nail implantation points, different long bone forms can be adapted, and the force line deviation caused by the limited fixed positions is avoided. When the bidirectional screw rod is rotated, the two connecting frames move synchronously and reversely, the equidistance displacement is realized by single rotation, the asynchronization error caused by separate adjustment is avoided, the precision and efficiency of pressurization or distraction are improved, and the axial pressure or distraction force can be applied by controlling the rotation direction and the number of turns.

The invention relates to medicine and can be used for treating severe polytrauma and complex fractures, for example, of the tibia long bone. A robotized system for the closed reduction of a fractured femur comprises a system of actuators based on a Stewart platform, a working member assembly, Schanz pins, a perineal post, and a controller with software. The Stewart platform is mounted on a floor plate via a vertical column. The linear actuators are arranged between a base plate and an end effector having a C-shaped ring. The two ends of the actuators are connected by hinges to the base plate and the end effector, respectively. The Schanz pins are secured to mounting blocks which are fastened by round-head screws and wingnuts. The perineal post is mounted on a base plate via a vertical column. The post is connected to two additional links. An O-shaped ring of the perineal post is connected to the C-shaped ring by a trapezoidal steel ring. A Schanz pin is mounted on a steel block such as to be capable of holding a proximal fragment in place during the reduction process. The invention results in precise traction forces and the optimal alignment of bone fragments.

Reposition and penetration forceps for fractures of long bones, in particular traumatic fractures of tibia in centre line, that comprise two jaws forming a three-point system in opposition, wherein the first movable jaw (1) comprises two threaded pins (7) with tips (21) and the second firm jaw (2) comprises one threaded pin (7) with a tip (21). An external fixator for fractures of long bones, in particular traumatic fractures of tibia in centre line, which comprises at least two sets of forceps, wherein the sets of forceps are arranged identically or in a mirror image to each other.

The utility model discloses a long bone fracture dislocation reduction fixator which comprises an arc-shaped bottom provided with an arc surface, and the arc-shaped bottom supports a normal bone and a dislocation bone through the arc surface; the upper reduction forceps comprise an upper handheld end and an upper occlusion end; the lower reduction forceps and the upper reduction forceps are connected through a rotating shaft, the lower reduction forceps comprise a lower handheld end and a lower occlusion end, the upper occlusion end abuts against the arc-shaped bottom, and the lower occlusion end abuts against the malposed bone; the bone screw is arranged on a normal bone, and at least part of the bone screw extends into a dislocated bone. During reduction, the upper occlusion end abuts against the arc-shaped bottom, the lower occlusion end abuts against the malposed bone, the malposed bone is reduced to the normal position, the medullary cavity axis of the malposed bone coincides with the medullary cavity axis of the normal bone, at the moment, the malposed bone is fixed to the normal bone through the bone screw, reduction of the bone is achieved, and it is guaranteed that the fracture position does not deviate or distort any more.

The utility model relates to the technical field of veterinary medical instruments, provide a kind of animal long bone fracture external fixation support and fixed system.The above-mentioned animal long bone fracture external fixation support includes: support body;Support body has inner side, outer side, first surface and second surface;First surface is equipped with perfusion hole, perfusion hole is used to inject adhesive, perfusion hole is equipped with at least two, at least two perfusion holes are along the circumferential interval of first surface Setting, every perfusion hole is all through first surface and second surface;Inner side is equipped with mounting hole, mounting hole is used to install kirschner wire, mounting hole is equipped with multiple, the axis of every perfusion hole is equipped with a column of mounting hole, the center of every mounting hole and the axis of perfusion hole intersect and set;Wherein, the projection area of perfusion hole between inner side and outer side at arbitrary section is greater than the projection area of mounting hole at the section.The utility model has realized the unilateral, multidimensional stable fixation of the fracture of animal long bone.

This invention discloses a fixation device for long bone fractures, belonging to the field of medical devices. It includes a limiting part, a base, elastic sutures, a reduction mesh sleeve, and a support adjustment rod. The limiting part is fixedly connected to the wall of the long bone shaft. The first end of the base is fixedly connected to the limiting part, and the second end of the base has an internally threaded hole extending towards the first end. The elastic suture extends from the second end of the base. Multiple elastic suture threading holes are discretely distributed on the reduction mesh sleeve. One side of the support adjustment rod is threadedly connected to the internally threaded hole, and the other side is fixedly connected to the reduction mesh sleeve. Multiple elastic sutures extending from the second end of the base pass through the fracture fragments at the bone ends and then fix the fracture fragments to the side of the reduction mesh sleeve facing the base via the aforementioned threading holes. This invention enables stable reduction of long bone fracture fragments, and only requires micro-holes for threading at the fracture ends, avoiding the trauma caused by numerous bone screw holes.

The present application relates to the technical field of medical equipment, in particular to a fracture proximal end fixing device for lower limb long bone fracture reduction. The fracture proximal end fixing device for lower limb long bone fracture reduction comprises a positioning mechanism, a clamping mechanism and a guide connecting piece connecting the positioning mechanism and the clamping mechanism; the positioning mechanism is provided with a first auxiliary Kirschner wire for rough positioning of a fracture area; the guide connecting piece is rotatable around the axis of the first auxiliary Kirschner wire; the clamping mechanism comprises a main Kirschner wire and a clamping piece, the clamping piece is provided with a clamping space for accommodating the fracture area, and one end of the main Kirschner wire extends into the clamping space for fine positioning of the fracture area. The bone positioning device can be used for long bone fracture reduction, meets the mechanical and precision requirements of long bone fracture reduction, and realizes stable fixation of the long bone fracture proximal end holding in combination with the clinical requirements; and can solve the problems of unstable holding, occupation of too much surgical space resources and damage to fracture blood supply of the current device.