7 results about "External fixator" patented technology

An improved external fixator assembly for fixating fractures that includes a proximal frame assembly, a distal frame assembly and a polyaxial joint. The polyaxial joint comprises articulating components that engage to have multi-axial or polyaxial translational motion to allow for distraction / reduction and adjustment of flexion / extension, radial / ulnar deviation, pronation / supination of the wrist to an optimal wrist position. The polyaxial joint may be lockable. Fixation screws are also provided for engaging the patient's bone tissue on opposite sides of a fracture.

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 application discloses a fracture external fixator with dynamic distraction function, which comprises a first fixing member, a second fixing member, a distraction guide rail, a linear driving mechanism and a controller. The first and second fixing members are distributed along a first direction and are used for fixing two parts of a fractured bone respectively. The distraction guide rail extends along the first direction and is connected with the first fixing member. An electric holder is in sliding fit with the guide rail and can clamp or loosen the guide rail. The first fixing member, the first electric holder, the second electric holder and the second fixing member are sequentially distributed. The second fixing member is connected with the second electric holder and is used for preventing the second electric holder from moving away from the first electric holder. The linear driving mechanism is installed on the first electric holder and is in driving connection with the second electric holder. The controller is electrically connected with the two electric holders and the linear driving mechanism. During treatment, the application can avoid a treatment empty window period between fracture fixation and bone defect repair and improve the continuity of overall treatment.

The present application relates to an electric intelligent orthopedic external fixator, comprising a telescopic mechanism, an upper ring, a lower ring, a drive mechanism, and a control mechanism, wherein the telescopic mechanism comprises a sleeve and a screw rod; one end of the sleeve is hinged to the upper ring, and the other end of the sleeve is sleeved on the screw rod; an end of the screw rod away from the sleeve is hinged to the lower ring; the screw rod is provided with an adjustment nut gear; the drive mechanism comprises a motor, an output shaft, and a circuit board; the motor drives the output shaft; the output shaft is provided with a driving gear; the driving gear is engaged with the adjustment nut gear; the circuit board is connected to the motor; the control mechanism is disposed on the upper ring, and the control mechanism is connected to the drive mechanism, wherein the screw rod is provided with a target object; the drive mechanism further comprises a sensor; the circuit board is connected to the sensor; the sensor detects the target object. The present application provides the target object on the screw rod for detection by the sensor, thereby directly obtaining the telescopic length. In addition, the sensor and the motor are directly controlled by means of the circuit board, which greatly reduces the number of cables between the control mechanism and the drive mechanism.

The present application relates to the technical field of medical devices, in particular to a low-temperature thermoplastic plate, a radiotherapy positioning film and a rehabilitation external fixation brace, comprising a plurality of elastic layers and a plurality of base layers, the elastic layers serving as the upper and lower surface layers of the low-temperature thermoplastic plate, the base layers being non-crosslinked layer structures, and the base layers being hot-pressed and attached between two adjacent elastic layers. The radiotherapy positioning film and the rehabilitation external fixation brace are both made of the above low-temperature thermoplastic plate. In the present application, the elastic layers serve as the surface layers of the low-temperature thermoplastic plate, and the surface layers lose surface tackiness without coating treatment, thus simplifying the production process flow. The arrangement of the plurality of base layers and the plurality of elastic layers not only reduces the problem of shear delamination between the elastic layers and the base layers, but also enables the inner layers of the low-temperature thermoplastic plate to have similar mechanical properties to the surface layers, so that the inner and outer layers of the product can deform and recover synchronously, and the base layers have the shape memory feature without crosslinking.

The single-arm multifunctional bone fracture external fixation frame comprises a ball head nail clamp, a first connecting base, a second connecting base, a connecting rod assembly and a fixed bone nail; two ends of the connecting rod assembly are connected with the first connecting base and the second connecting base respectively; the first connecting base and the second connecting base are each connected with the ball head nail clamp and are connected in a spherical hinge connection mode; the ball head nail clamp is used for clamping the fixed bone nail; the connecting rod assembly comprises a plurality of connecting rods and a locking mechanism, can provide relative rotation and sliding between the connecting rods in multiple directions, and realizes adjustment and fixation of the angle and position between the connecting rods through the locking mechanism. The application can adapt to the fixing requirements of various bone fractures and is simple to operate, and is suitable for emergency treatment scenes such as disaster relief and wartime.

This invention discloses a method for quickly fabricating clamps to repair leaks in sewage pipelines using pipe fittings. The method includes: directly using an existing pipe of the same diameter as the project site, splitting the pipe at its center into an upper and lower half, and adjusting it to form two semi-circular external fixing devices; welding iron lugs to both sides of the external fixing devices; pre-drilling holes on each iron lug for bolts; during installation, using the upper and lower half as external fixators, completely encasing the interior of the upper and lower half with sealing pads, and connecting the upper and lower half as external fixing components using bolts; the bolts pass through the pre-drilled holes on the two iron lugs of the upper and lower half, and the stress from the continuous tightening of the bolts gradually tightens the internal sealing pads, thus completing the leak-sealing work through compression. The purpose of this invention is to quickly resolve pipeline leak problems when there are multiple leaks in sewage transport pipelines, and when funds and time are limited.