46results about How to "Avoid exposure to radiation" patented technology

A temporary bioabsorbable-radiopaque marker for use on an implantable endoprosthesis. The bioabsorbable-radiopaque marker is adapted to be disposed on or adjacent an implantable endoprosthesis in a body lumen for a predetermined amount of time until the bioabsorbable and radiopaque materials are absorbed or dispersed in the body.

The invention relates to a pelvic fracture reduction intelligent monitoring system comprising a sample fracture model database, a patient pelvic fracture data acquisition unit, a reset situation monitoring unit and a mixed reality data fusion processing unit. The sample fracture model database stores a plurality of sample fracture models. The patient pelvic fracture data acquisition unit utilizesthe magnetic navigation and positioning technology to collect patient pelvic position information data and upload the data to the mixed reality data fusion processing unit. The mixed reality data fusion processing unit automatically calls a sample fracture model in the sample fracture model database corresponding to the patient pelvic fracture condition and utilizes the mixed reality technology tomatch the patient pelvic position information data with the sample fracture model to form an intelligent fracture model for the patient pelvic fracture state. The reset situation monitoring unit loads and displays images of the intelligent fracture model in different positions and monitors the reset situation of the patient pelvis at different positions. The system enhances the treatment effect and reduces the person radiation.

The invention provides a steering gear applied to a high temperature gas cooled reactor. The steering gear comprises a box body component, a power component, a shaft seal connecting component and a rotor component, wherein the shaft seal connecting component also having the function of steering shielding is arranged; the box body is provided with a first straight through hole and a first side through hole; the rotating drum of the rotor is provided with a second straight through hole and a second side through hole; the inclined angles of the axle of the second straight through hole and the second side through hole is equal to the included angle of the axle of the first straight through hole and the first side through hole, so that a straight through ball path and a side through ball path which can be mutually switched according to rotation of the rotor are formed. The steering gear has the function of ball flow distribution that one is divided into two, is simple in structure and small in pipeline mounting space, and the requirements on reliability in long-term operation in a strong radiation working environment are met.

The invention discloses a reference temperature T0 test method for an irradiated RPV steel 0.5T-CT sample. The method includes the steps of: S1. sample installation; S2. test execution; S3. sample pre-cracking inspection; and S4. data analysis. The method provided by the invention selects irradiated RPV steel 0.5T-CT sample as the research object, makes a reasonable and reliable reference temperature T0 test method that is carried out under the circumstance of very strong gamma rays, the whole test process adopts manipulator operation, avoids radiation of workers in the operation process, meets the radiation protection requirement, and improves postirradiation examination means and technological reserve.

The invention discloses a foot-ankle fixator for osteotomy around knee joint, comprising a base and a fixator, wherein, a height adjusting assembly is arranged on the base, a universal ball is arranged on the top of the height adjusting assembly and a pressing bolt for tightening or loosening the universal ball, a connecting rod is fixed on the universal ball, and the bottom of the fixator is fixedly connected with the connecting rod. A fixture includes a fixture base plate, one end of the fixture bottom plate is provided with a heel support plate, A first fixing plate and a second fixing plate are spaced apart on both sides of the top of the fixture bottom plate, Between that two side of the first fixing plate and between the two sides of the second fixing plate are connected powerful line adjusting crossbars, a plurality of grooves are distribute on the force line adjusting crossbars at intervals, a plurality of protrusions are arranged on both sides of the bottom of the fixer bottomplate, and two protrusions adjacent to each other form bandage winding grooves. The invention can not only ensure the accuracy of the target force line measurement of the affected limb in the osteotomy around the knee joint, but also enable the operator to avoid the harm of radiation exposure, save the human resources and have high practicability.

The invention discloses an anti-radiation automatic flaw-inspecting machine comprising a detecting platform, a flaw-inspecting platform, a feeding platform, a conveying device, a discharging platform,a discharging device and a mechanical arm clamping device. The feeding platform and the discharging platform are located on the two sides of the detecting platform correspondingly. The flaw-inspecting device is arranged on the upper side of the detecting platform. The conveying device is arranged between the flaw-inspecting device and the discharging platform. The mechanical arm clamping device is arranged among the feeding platform, the flaw-inspecting device and the conveying device. The discharging device is arranged at the connection position between the tail end of the conveying device and the discharging platform. Compared with the prior art, the anti-radiation automatic flaw-inspecting machine has the beneficial effects that by the adoption of the mechanical automation technology,labor productive power is freed, the situation that people make contact with radiation is avoided; and meanwhile, the overall structure of the anti-radiation automatic flaw-inspecting machine has goodanti-radiation performance, and the protective capacity of the anti-radiation automatic flaw-inspecting machine is better improved.

The invention discloses a pulmonary nodule positioning method. The method comprises the following steps: S0, determining the position of a pulmonary nodule in a lung; s1, establishing a thoracic three-dimensional model; s2, marking a virtual puncture positioning point; s3, marking the position of the pulmonary nodule on the surface of the lung. According to the positioning method of the pulmonary nodule, accurate positioning and real-time registration are performed on the CT three-dimensional reconstruction image and the thoracoscope image by virtue of a computer-aided diagnosis technology and a computer deep learning model based on artificial intelligence, so that accurate positioning of the pulmonary nodule is realized. Meanwhile, interventional or radiative positioning steps harmful to the human body of the patient are reduced, complications after positioning can be reduced, and the positioning cost is reduced.

The invention provides an automatic bone cement propelling device and a bone cement filling method, and relates to the technical field of medical equipment.The automatic bone cement propelling device comprises an automatic driving device and a bone cement propelling device.The bone cement propelling device comprises a piston used for propelling bone cement into cancellous bones with osteoporosis and osteolysis change of the human body; the automatic driving device can drive the piston to move, the automatic driving device is provided with a plurality of pushing gears, and the pushing force of the automatic driving device is different when different pushing gears are adopted. According to the automatic bone cement propelling device provided by the invention, controllable and continuous automatic propelling of the bone cement is realized when medical personnel are far away from an operating table and under strict radiation protection, and long-time ray radiation of the medical personnel in a traditional operation is avoided; and different pushing gears can be selected according to the preoperative bone destruction degree, so that the bone cement injection safety and the operation quality are greatly improved.

The invention discloses a spent fuel storage tank vacuumizing method and system. The method comprises the steps: obtaining vacuumizing setting parameters which comprise a target vacuum degree value and / or a target vacuumizing rate; acquiring a current vacuum degree value,acquired by a vacuum meter, in a spent fuel storage tank and a current valve opening degree, acquired by a detector, of a vacuumizing regulating valve of the spent fuel storage tank, and determining a driving parameter according to the current vacuum degree value, the current valve opening degree and the target vacuum degree value; and outputting the driving parameter to a driving device, driving a valve rod of the vacuumizing regulating valve of the spent fuel storage tank to move through a driving shaft, and adjusting the valve opening degree of the vacuumizing adjusting valve.

The invention relates to a shielding device for radioactive sample neutron residual stress measurement. The shielding device for the radioactive sample neutron residual stress measurement comprises a device main body (1), the device main body (1) is of a three-layer box-type combined structure, and a middle box (2) is internally provided with a hollow area (3) used for containing a sample clamping device body (4); an incidence pore channel (5), an emergent pore channel (6) and a diffraction pore channel (7) are formed in the side wall of the middle box (2), and the incidence pore channel (5), the emergent pore channel (6) and the diffraction pore channel (7) are all communicated with the hollow area (3). The shielding device for the radioactive sample neutron residual stress measurement not only meets the measurement of radioactive sample three-dimensional lossless depth residual stress but also meets the safety requirement on radioactive sample radiation shielding, and the convenience and the practicability are achieved.

The invention provides a steering gear applied to a high temperature gas cooled reactor. The steering gear comprises a box body component, a power component, a shaft seal connecting component and a rotor component, wherein the shaft seal connecting component also having the function of steering shielding is arranged; the box body is provided with a first straight through hole and a first side through hole; the rotating drum of the rotor is provided with a second straight through hole and a second side through hole; the inclined angles of the axle of the second straight through hole and the second side through hole is equal to the included angle of the axle of the first straight through hole and the first side through hole, so that a straight through ball path and a side through ball path which can be mutually switched according to rotation of the rotor are formed. The steering gear has the function of ball flow distribution that one is divided into two, is simple in structure and small in pipeline mounting space, and the requirements on reliability in long-term operation in a strong radiation working environment are met.

The present invention relates to a vehicle detection system, comprising: a barrier gate, including a barrier gate 1 arranged at the entrance of the passage and a barrier 2 disposed at the exit of the passage; a vehicle detection unit: comprising a vehicle detection unit 1, a vehicle detection unit 2, Vehicle detection unit 3 and vehicle detection unit 4; license plate recognition unit; ray scanning unit; inspection unit: used to obtain and display the image inside the vehicle compartment for inspection by the staff; control center unit: used to receive gate status information, vehicle information, license plate information, and interior image information of the compartment, and associate storage of vehicle information, license plate information, and interior image information of the compartment; its control modes include one-vehicle-one-check mode and anti-backup detection mode. The invention sets multiple operation modes, and through multiple detection and linkage protection measures, it can effectively prevent field personnel from entering the detection area and being irradiated by radiation.

The invention relates to a shielding device for radioactive sample neutron residual stress measurement. The shielding device for the radioactive sample neutron residual stress measurement comprises a device main body (1), the device main body (1) is of a three-layer box-type combined structure, and a middle box (2) is internally provided with a hollow area (3) used for containing a sample clamping device body (4); an incidence pore channel (5), an emergent pore channel (6) and a diffraction pore channel (7) are formed in the side wall of the middle box (2), and the incidence pore channel (5), the emergent pore channel (6) and the diffraction pore channel (7) are all communicated with the hollow area (3). The shielding device for the radioactive sample neutron residual stress measurement not only meets the measurement of radioactive sample three-dimensional lossless depth residual stress but also meets the safety requirement on radioactive sample radiation shielding, and the convenience and the practicability are achieved.

A device used for carrying the bedridden to take a fluoroscopy belongs to the technical field of medical instruments. The bedridden can not stand alone on a backboard of an X-ray machine when taking a fluoroscopy to detect the digestive system so that the detection is obstructed. The technical proposal of the invention is as follows: four bed board nuts (8) are respectively fixed on a movable bedboard (6); bolts (9) with butterfly handles (10) are screwed on the bed board nuts (8); a waist bandage (11), a right thigh bandage (14) and a left thigh bandage (15) are respectively fixed on the movable bed board (6). The device has the advantages that the device has reasonable structure design as well as skillful and novel idea and can provide enormous convenience for the bedridden to take X-ray fluoroscopic detection.

The invention discloses a low-temperature sterilization device for food production. The low-temperature sterilization device comprises a workbench, a sterilization box and a control cabinet are arranged on the outer surface of the upper end of the workbench, the control cabinet is located on one side of the sterilization box, and an exhaust device is arranged on the outer surface of the upper end of the sterilization box. According to the low-temperature sterilization device for food production, through the arrangement of a material storage device, a material storage outer shell, a protection plate, a movable cover plate, a handle, a material storage box and moving wheels, a discharge port can be protected, radiation is prevented from being transmitted out, meanwhile, sterilized products can be stored, and the sterilization effect is good. Through the arrangement of a staggered conveying device, an upper conveying belt, a lower conveying belt, a driving roller, a transmission chain and a synchronous driving device, the positions and postures of products can be adjusted when the products are sterilized, the food sterilization effect is improved, and the equipment is simple in structure and convenient to operate and brings better use prospects.

The present disclosure relates to a radiotherapy setup verification method and device based on a virtual intelligent medical platform, wherein the method includes: identifying a first mark through optical tracking to obtain the setup position located by the first mark; identifying the second mark, and obtaining the position of the expected target area located by the second mark; wherein, the expected target area is different from the target area corresponding to the set-up position; according to the set-up position and the The position of the desired target area is obtained, and the result of the setup verification is obtained. In the embodiment of the present disclosure, by identifying the first mark and the second mark through optical tracking, and judging the position of the actual and expected target area, the accuracy of the positioning result can be easily and accurately verified, and at the same time, the target object can be prevented from receiving additional radiation , which reduces the verification cost and the setup error, thereby achieving stable and reliable setup verification.