48results about How to "Solve long-standing problems" patented technology

An intramedullary resetter for long bone fractures of extremities that can automatically feed wires belongs to the technical field of orthopedic medical devices, and is used for rapid reduction and wire feeding of long bone fractures with lateral displacement. The technical solution is: the front end of the reset rod can pull the reset head to rotate along the fixed axis, the rear end of the reset rod is connected with the knob, the guide wire is passed through the guide wire tube, and there is a guide wire push plate and a wire feed handle at the rear of the guide wire tube. The wire guide push plate can be pushed for wire feeding operation. The reset head of the present invention enters the medullary cavity on the opposite side of the broken end of the fracture, and turns and pulls the knob at the rear end of the reset pull rod, so that the reset head moves the opposite side of the medullary cavity to reset the fractured bone on the opposite side. The wire is sent into the medullary cavity, and the supporting tools of the intramedullary nail are used for reduction and fixation. The invention can quickly reset the long bone fractures with lateral displacement and rotational displacement, and the guide wire is fast, stable and easy to control, improves the accuracy of reset and operation quality, and solves the problem of manual wire feeding.

The present invention discloses a power line with gas-sensing device. It is mainly used on the exhaust equipment, and is characterized by that the partial element and device of the gas-sensing controller are combined or whole gas-sensing controller is mounted on the power line so as to solve the problem of that the gas-sensing element of the gas-ensing controller of kitchen ventilator is near to stove and can be blocked easily by fume to make the gas-ensing element lose its protection function and shorten its its service life. Said invention raises its safe and protection function.

The invention discloses a method for detecting the content of chlorine, phosphorus and potassium in a compound and mixed fertilizer product by an energy dispersion X-ray fluorescence spectrum. The method comprises the following steps: 1) selecting the compound and mixed fertilizer product composed of components with different types and content as a calibration sample and accurately determining thecontent of the chlorine, the phosphorus and the potassium in the calibration sample; 2) testing the compound and mixed fertilizer calibration sample with the known content of the chlorine, the phosphorus and the potassium by adopting an energy dispersion type X-ray fluorescence spectrograph and determining testing conditions of chlorine, phosphorus and potassium elements; 3) testing a compound and mixed fertilizer sample to be tested by adopting the energy dispersion type X-ray fluorescence spectrograph and obtaining the content of the chlorine, the phosphorus and the potassium in the compound and mixed fertilizer sample to be tested according to X-ray fluorescence spectrum intensity and a relation of the content of the chlorine, phosphorus and potassium elements in a calibration workingcurve constructed in step 2), so as to obtain the content of the chlorine, the phosphorus and the potassium in the compound and mixed fertilizer sample to be tested. According to the method disclosedby the invention, the content of the chlorine, the phosphorus and the potassium in products including the compound and mixed fertilizer, compound fertilizer, blended fertilizer and the like can be rapidly determined; the dosage of chemical reagents is reduced and a detection process is convenient and rapid; a detection result is accurate and has good consistency.