30 results about "Frontal bone" patented technology

In one embodiment, a method for testing a helmet comprising the steps of: placing a strike helmet on a first headform; placing a target helmet on a second headform, colliding the strike helmet against the target helmet; and measuring the acceleration of the second headform caused by the collision.

In a second embodiment, an apparatus for testing a helmet comprising: a strike helmet placed on a first headform; a target helmet placed on a second headform; a motion device for moving the strike helmet to collide with the target helmet.

In a third embodiment, a helmet comprising: a shell having a zone of a greater rigidity; having a zone of a lesser rigidity; wherein the zone of lesser rigidity covers a portion of the frontal bone of a wearer.

The invention discloses a high-intensity porous bone repair material and a method for preparing the same. The method comprises the following: (1) a step of preparing a porous body, which is to use beta-tricalcium phosphate, bio-glass and a stable tetragonal zirconia power as a solid phase, add deionized water into the solid phase, add ammonium polyacrylate serving a dispersant, process the mixture by ball milling to prepare pulp, soak polyurethane foam completely into the pulp, take out the soaked foam, extrude excessive pulp out of the product so as to evenly coat the pulp on the pore walls of the porous body, dry the obtained product, place the dried product in a program control furnace or an electric resistance furnace, film the obtained product at a rising temperature and sinter the filmed product to form the porous body; (2) a step of soaking the obtained porous body in a water solution of NaOH, washing the product with deionized water in the atmosphere of ultra waves and drying the resulting product to obtain the high-intensity porous bone repair material. The high-intensity porous bone repair material of the invention has a high intensity and a high compressive strength, can be widely applied to repair skulls, frontal bones and the like and can also be used to reconstruct scaffolds of cell carriers in tissue engineering and repairing organs.

A head mounted display including a main strap, a display part, an adjusting mechanism, a forehead pad, a plurality of holders and a lace is provided. The main strap surrounds a user's head. The display part is connected to the main strap and corresponds to the user's eyes. The adjusting mechanism is disposed on the main strap. The forehead pad corresponds to the user's frontal bone. The holders are disposed on the main strap and the forehead pad. A path of the lace in sequence passes through a retractable portion, a portion of the main strap near a first side of the display part, a first side of the forehead pad, a fixed portion of the lace, a second side of the forehead pad and a portion of the main strap near a second side of the display part. The adjusting mechanism connects the retractable portion and is adapted to adjust a magnitude of tension of the lace at the retractable portion. The lace is fixed at the main strap and the forehead pad by the holders.

The invention provides a head rest for an operating table. The head rest for the operating table comprises a base and a head fixture, wherein the base is connected with an operating table; and the head fixture is connected with the base. The head fixture comprises a first supporting part, a second supporting part, a first clamping part and a second clamping part, wherein the first supporting part is used for supporting the frontal bone of a patient's head; the second supporting part rotatably connected with the first supporting part is used for supporting the cheekbone of the patient's head; the first clamping part which is connected with the first supporting part and capable of rotating in the vertical direction is used for clamping the occipital bone of the patient's head; and the second clamping part arranged on the second supporting part is used for clamping the mandibular angle of the patient's head. The base is provided with a hollow projection area corresponding to the portion just below the patient's neck. Traction of the patient's neck or accurate displacement of the patient's head in horizontal and vertical directions can be realized by moving the head rest during surgery.

The invention discloses a prior knowledge-based method for reconstructing the artificial bone repair model of a damaged part. According to the method, firstly, a skeleton outer contour is extracted from a medical tomographic CT image, and a repairing template is introduced. Meanwhile, a contour line is re-sampled from the repairing template according to the thickness of a broken layer. Secondly, atemplate layer which is the most matched with a to-be-repaired layer is searched out of the repairing template by utilizing a characteristic value method, and the template layer and the to-be-repaired layer are aligned and transformed. Thirdly, the isomorphic points of the breakpoint of the to-be-repaired layer are obtained on the template layer through a common included angle method, and a fitting equation between isomorphic points is calculated. The values are reversely substituted into a fitting equation and then the coordinate of the interpolation point of the to-be-repaired layer can beobtained. Fourthly, an inner contour is generated according to the given thicknesses of the inner and outer layers of the bone. Finally, an artificial bone repair model is obtained by utilizing the VTK three-dimensional reconstruction. The method disclosed by the invention is applied to the actual implantation operative procedure of personalized artificial bones when cranial bones are broken too seriously to be directly repaired by the surgical operation after human frontal bones, parietal bones and other parts are heavily damaged.

A method of transplanting cells into a subject is disclosed. The method comprises transplanting the cells into the paranasal sinus of the subject or the subarachnoid cavity situated between the frontal bone of skull and the olfactory bulb of the subject. Devices for paranasal sinus transplantation and subarachnoid cavity transplantation are also disclosed.

The invention discloses an after-brain-surgery cranial nerve care device which comprises an inner layer protection cushion, a middle layer air bag, an outer layer cooling shell and a bottom fixing ring. The inner layer protection cushion comprises a frontal bone cushion, a parietal bone cushion, an occipital bone cushion, a temporal bone cushion and a sphenoid bone cushion which are fixedly connected with one another through locking and fixing devices. The cushions, the middle layer air bag and the outer layer cooling shell form a three-layer protection structure. Through the after-brain-surgery cranial nerve care device, by simulating a human brain skeleton structure, by means of the split type structural design, the product makes closer contact with the head, and the after-brain-surgerycranial nerve care device is convenient to detach and assembly; through the middle layer air bag, the after-brain-surgery cranial nerve care device can massage and protect the head bone through compression or depressurization in use; the inner layer protection cushion is made of silica gel and can make soft contact with the head, and therefore pressure sores are prevented, the brain tissue structure is protected, and the safety protection capacity of the product is improved.

The invention discloses a tokay gecko brain three-dimensional positioning device and a positioning method based on a quadrate bone and a maxillary dental top. The special concave structure of the quadrate bone in the auditory meatus of a tokay gecko is utilized by the positioning device, an ear rod end adaptive to the structure of the quadrate bone is designed, left-right leveling and centering effects in clamping the skull of the tokay gecko are ensured; and then the maxillary dental top of the tokay gecko is positioned and clamped by a maxillary support plate, so that the head of the tokay gecko is fully fixed. The positioning device comprises a left-right ear rod clamp, a tokay gecko adapter, a three-dimensional electrode moving device and the like. By the special structure design of the ear rod and the ear rod end and under the cooperation of the positioning to the maxillary dental top of the tokay gecko by the maxillary support plate, the parietal bone and the frontal bone of the tokay gecko no more rotate relatively when tokay gecko opens or closes the mouth and when the body of the tokay gecko moves drastically, so that the standard position of the brain tissue of the tokay gecko in an experiment is ensured; and the positioning device not only achieves firm and reliable positioning, but also has the characteristics of correct positioning and simple operation. The positioning method is also suitable for positioning and clamping other Gekkonidae animals.

The invention belongs to the technical field of medical teaching, and particularly discloses a body structure mold for teaching. The body structure mold comprises a frontal bone, a parietal bone, an occipital bone, a temporal bone, a sphenoid bone, a nasal bone, an ethmoid bone, insertion holes and pins. The parietal bone is fixedly installed on the right side wall of the frontal bone. The occipital bone is fixedly installed on the right side of the bottom of the parietal bone. The temporal bone is fixedly installed at the bottom of the parietal bone. The bottom of the left side end of the parietal bone is fixedly connected with the right side end of the temporal bone. The sphenoid bone is fixedly installed on the boundary of the frontal bone, the parietal bone and the temporal bone. The ethmoid bone is fixedly installed at the bottom of the frontal bone and the sphenoid bone. An upper jaw bone is fixedly installed at the left side end of the ethmoid bone. The nasal bone is fixedly installed in the middle of the upper jaw bone. A lower nasal bone is fixedly installed at the bottom of the nasal bone. A lower jaw bone is fixedly installed at the bottom of the upper jaw bone. The leaching interestingness of students is improved, the good learning effect is realized, and meanwhile the comprehensive effect of applying and teaching can be better realized.

A headgear system with first and second helmets is provided. The first helmet has a frontal bone section that covers a frontal bone of a wearer of the first helmet, and a first magnet component that is located at the frontal bone section of the first helmet. The first magnet component extends at least 90 degrees around the central axis of the first helmet. The second helmet has a frontal bone section that covers a frontal bone of the wearer, and a second magnet component is located at the frontal bone section of the second helmet. The magnet forces of the first and second magnet components repel one another when the first and second magnet components are located proximate to one another to help reduce force onto the head from impact.

The invention provides a skull counter virtual scale calibration method which comprises the following steps: (1) establishing a Chinese reference human skull digital model according to a Chinese adultmale reference voxel model; (2) performing virtual representation on the detector, and establishing a detector model with a fine structure; (3) reconstructing a coordinate system of an irradiation scene, and uniformly distributing radionuclides on the inner and outer surfaces of the forebone and the overhead bone; (4) setting a particle transport process in Geant4, and establishing a Monte Carlosimulation process; and (5) simulating and calculating the detection efficiency, and carrying out virtual scale calibration. The skull counter virtual scale calibration method provided by the invention does not need a simulation skull model containing a radioactive source to carry out experimental measurement calibration, but directly calculates a calibration coefficient by utilizing a Monte Carlomethod through establishing a virtual experimental scene, so that the virtual calibration scale of the skull counter can be quickly and accurately realized.

The invention discloses a traditional Chinese medicine composition for treatment of bone cancer and a preparation method of the traditional Chinese medicine composition. The traditional Chinese medicine composition comprises astragalus membranaceus, eucommia ulmoides carbon, semen cuscutae, gastrodia elata, radix pseudostellariae, psychropotes longicauda, radix paeoniae rubra, radix paeoniae alba,bletilla striata, dendrobe, radix ophiopogonis, radix adenophorae, peach kernels, rhizoma anemarrhenae, oldenlandia diffusa, parasitic loranthus, radix achyranthis bidentatae, rhizoma corydalis, chaenomeles speciosa, gecko, earthworms, silkworm larva, fructus trichosanthis, fritillaria cirrhosa, rhizoma polygonati, cortex moutan, cornu cervi degelatinatum, caulis spatholobi, honeysuckle stem, spina data seeds, semen boitae, liquorice, tortoise plastron and carapax trionycis. The preparation method includes: adding fried tortoise plastron and carapax trionycis to remaining ingredients after soaking; performing soaking continuously prior to decocting and filtering to obtain first drugs and residues; adding water to the residues, performing decoction once again and filtering to obtain seconddrugs; mixing the first drugs with the second drugs to obtain the traditional Chinese medicine composition. The traditional Chinese medicine composition has certain curative effect on vertebra, thoracic vertebra, ribs, lumbar vertebra, cervical vertebra, sacrum, frontal bone, shoulder blades and the like in truncal bones and is safe and reliable.

The invention discloses a head thin-layer CT scanning data based frontal bone angle measurement method. According to the invention, head thin-layer CT scanning DICOM image data of a frontal suture premature closure patient is imported by using MINICS software, and a reconstructed three-dimensional image of the head of patient skull is acquired according to the difference of human body bone CT density values. A plane required to be measured is acquired by using methods such as region growing and orthogonal cutting in the MIMICS software, and a frontal bone angle is measured accurately. The method disclosed by the invention is simple in operation and accurate in result, so that a reliable method for measuring the frontal bone angle of frontal suture premature closure child patients is provided, an error caused by human factors such as operations of a doctor in head CT scanning can be significantly reduced, and the method has high accuracy in estimating both the disease severity and surgery effects of the child patients. The frontal bone angle measurement method is simple and convenient to operate and low in time consumption, and does not need to be equipped with professionals, thereby being widely applicable to front-line clinical work.

The invention discloses a sizing pillow for an infant. The sizing pillow comprises a pillow body and a filler, wherein the pillow body comprises surface-layer cloth, bottom-layer cloth and a middle layer, the surface-layer cloth is positioned above the bottom-layer cloth, the surface-layer cloth and the bottom-layer cloth are combined to form a first cavity, the middle layer is positioned at the middle-lower part of the first cavity, a pit adaptive to the head of the infant is arranged at the position, at the middle layer, of the pillow body, the upper surface of the middle layer attaches to and is fixed to the surface-layer cloth, the lower surface of the middle layer attaches to and is fixed to the bottom-layer cloth, the middle layer, the surface-layer cloth and the bottom-layer cloth are combined to form a second cavity, a plurality of feeding holes are arranged at the edge of the inside of the middle layer, the second cavity communicates with the first cavity through the feeding holes, one part of the filler is positioned in the first cavity, the other part of the filler is positioned in the second cavity, and the filler is ball-shaped kapok fibers. For the sizing pillow for the infant, the phenomenon that the kapok fibers form blocks which generate displacement can be avoided, while the sizing of the back of the brain is realized, the growth and development demands for face shaping are also satisfied, and thus the deformation of two sides of the frontal bone of the face is prevented.

The invention discloses neurosurgery head operation positioning equipment which comprises a supporting base, driving wheels are symmetrically and rotationally arranged at the four corners of the lower end face of the supporting base, and the supporting base is driven by the driving wheels to run on the ground; the bearing base plate is transversely arranged on the upper end face of the supporting base through a lifting seat; the bearing cushion layer is embedded in the middle of the upper end face of the bearing base plate, and the bearing cushion layer is used for bearing the afterbrain of the head of the patient; the diffusion and forehead protection assemblies are symmetrically arranged on the upper end face of the bearing base plate and located on the left side and the right side of the bearing cushion layer, and the diffusion and forehead protection assemblies conduct two-side positioning on the frontal bone of the patient and preferentially conduct external diffusion on the cortex of the frontal bone before positioning; and the jaw locking and neck lifting assembly is arranged on the middle side of the interior of the bearing base plate, and one end of the jaw locking and neck lifting assembly is connected with the diffusion and forehead protection assembly.

A headnet (20) for first responders has a net lattice (22) formed to cover the first responder's head (100) from the first responder's frontal bone area (102) to the occipital bone area (104) in support of protective turnout gear for respiratory protection (44) with a first set of straps (24a, 24b) extending forward from a level approximate to the intersection of the first responder's parietal bone (108) and occipital bone (104) and a second set of straps (28a, 28b) extending forward from a level approximate to the lower portion of the first responder's occipital bone (104). The headnet (22) has an opening (36) formed within the headnet (22) that is vertically centered with the back of the first responder and horizontally between the two straps (24, 28), having sufficient area in either anextended state or non-extended state to pull through the first responder's hair (46).