13 results about "Bones head" patented technology

The application discloses a preparation method of an interpenetrating phase ceramic dental material and belongs to the technical field of biomedical materials. The application is based on the porous foam structure and cavity tissue of bird skeletons for biomimetic design, two kinds of biomimetic bird bone structures combining the characteristics of annular hyoid structures and cavity tissues are established, and according to the bird skull cooperative damping mechanism, a mortise and tenon structure with the characteristics of cooperative bearing and buffering is constructed, the structure has more excellent mechanical bearing performance and deformation stability compared with a traditional structure. The zirconium oxide-hydrogel interpenetrating phase material prepared by a photo-crosslinking method, the composite design of the soft phase and the hard phase material not only significantly improves the energy absorption characteristics of the material, but also effectively improves the fracture toughness of the dental material. On this basis, a functional coating is constructed on the surface of the material by using a sol-gel dip coating process, and the problems of insufficient corrosion resistance and wear resistance of the dental material in the oral environment are further solved.

The application discloses a method for locating the wing point on the body surface based on NCCT image data and belongs to the technical field of medical image processing. The method uses the NCCT sequence data of a routine image inspection at any time to reconstruct the shape of a skull, automatically and individually identifies the eyebrow bone features through corner point detection and Kmeans mean clustering, accurately determines the outer edge points of the eyebrow bone, adopts the method that the outer edge of the eyebrow bone is pushed forward to the direction of the extension line of the eyebrow bone by a curved surface distance of 3.5 cm and the midpoint of the malar arch is pushed upward by a linear distance of 4 cm, and the wing point is automatically and quickly located, which has important clinical significance.

In a method for minimizing the effects of impact forces to the skull, a headgear may be worn to restrict blood flow from one or more of the draining veins in the neck. Pressure applying pad members movably connected to the headgear may be deployed to apply pressure against the veins of the neck.

The invention relates to the field of medical education, in particular to a high-simulation temporal bone anatomy simulator which comprises a half-dissected skull base. The operation hole is formed in the temporal bone position; the outer ear unit is detachably arranged on the operation hole; the inner ear unit is arranged on the inner side of the skull base and located at the operation hole, the inner ear unit is detachably arranged in the skull base, the inner ear unit is formed by matching a bone body module and a soft body module, the bone body module is made of a hard material, and the soft body module is made of a flexible material; the inner ear unit is internally provided with an in-ear pipeline for simulating a blood vessel; a hydraulic system used for supplying liquid to the pipeline is arranged in the skull base. The technical problem that existing temporal bone dissection is difficult to carry out surgical operation practice is solved.

This invention discloses a teaching device for manual reduction of temporomandibular joint dislocation, comprising a base plate on which a lifting and adjusting assembly is mounted. A skull model is mounted on top of the lifting and adjusting assembly. The skull model has a temporalis muscle spring assembly between the temporal bone and coronoid process, a masseter muscle spring assembly between the zygomatic arch and the lateral surface of the lower border of the mandibular angle, a medial pterygoid muscle spring assembly between the posteromedial aspect of the maxillary tuberosity and the medial surface of the lower border of the mandibular angle, and a lateral pterygoid muscle spring assembly between the articular pterygoid fossa and the lateral pterygoid plate at the condylar neck. In this invention, the skull model can rotate on top of the lifting and adjusting assembly, allowing the device to visually display the temporomandibular joint and the mandibular elevating muscles closely related to joint dislocation, simulating the movement of muscles inside the oral cavity, thus realistically simulating the force resistance against the mandibular elevating muscles during temporomandibular joint reduction. Furthermore, the device allows for angle adjustment to accommodate students in different positions.

An apparatus and methods are provided for a dermal cap for resurfacing a metatarsal head of the foot or a metacarpal head of the hand. The dermal cap comprises an outer surface having a convex shape, an inner surface having a concave shape, and a rounded peripheral surface joining the inner surface and the outer surface. The inner surface can be placed onto a bone head such that the outer surface provides a bone head surface resembling the original articular cartilage. The outer surface effectively restores the articular cartilage and thus relieves pain and facilitates better joint function. The dermal cap can be formed by stretching it over a rounded mandrel shaped similarly to the size and anatomy of the bone head to be treated. The dermal cap can be freeze-dried on the rounded mandrel to set the desired anatomy of the dermal cap.

The application discloses a design method and system of a maxillofacial defect repair implant, comprising: CT or MR scanning of a patient's head to obtain scanning data; threshold segmentation and non-skeletal part removal processing of the scanning data to obtain a binary image; partial registration of the binary image and a skull binary image template, adjustment of the pose according to the registration result, and determination of the defect type according to the registration missing part; local cutting and scaling processing of the binary image of the patient's skull according to the defect type; input of the processed image into a generation network to generate a preliminary implant design result; import of the preliminary implant design result and the original defect skull image into a mixed reality device, projection into a real space coordinate for fine adjustment and modification to obtain a correction result; transmission of the modification result into a 3D printer for production to obtain a final implant entity. The application can accurately design a suitable implant shape according to medical images of a defect site.

The present application relates to a kind of skull model and preparation method for head inside irradiation living body measurement device calibration, wherein the skull model includes skull, epidermis layer and radioactive source;The radioactive source is arranged on the surface of the skull, and is located on the skull corresponding parietal bone and frontal bone position;The epidermis layer is fixed on the surface of the skull by pouring, and is tissue equivalent material.The present application sets up radioactive source on the surface of the skull, and uses tissue equivalent material as epidermis layer, to form skull model, the model can simulate the deposition in the skull after human body is taken into parent bone nature nuclide, i.e.as the real human body nuclide intake amount according to the amount of radioactive source setting, so as to more accurately calibrate the scale of head inside irradiation living body measurement device, to improve the measurement precision of human body nuclide activity.

A bone conduction implant, including a bone fixture including a male screw section configured to screw into a skull and an abutment configured to be rigidly attached to the bone fixture, wherein the abutment includes an exterior surface diameter lying on a first plane normal to a longitudinal axis of the bone conduction implant that is less than or substantially equal to the maximum thread diameter of the male screw section of the bone fixture.

The invention discloses a preparation method of an interpenetrating phase ceramic dental material, and belongs to the technical field of biomedical materials. Bionic design is carried out based on a porous foam structure and a cavity tissue of bird bones, two bionic bird bone structures combining annular tongue bone structure characteristics and the cavity tissue are established, mortise and tenon matching design is carried out according to a bird skull collaborative vibration reduction mechanism, and the bionic bird bone mortise and tenon structure with collaborative bearing and buffering characteristics is constructed. Compared with a traditional structure, the structure has more excellent mechanical bearing performance and deformation stability. According to the zirconia-hydrogel interpenetrating phase material prepared by a photo-crosslinking method, due to the composite design of a soft-phase material and a hard-phase material, the energy absorption characteristic of the material is remarkably improved, and meanwhile, the fracture toughness of a dental material is effectively improved. On the basis, a functional coating is constructed on the surface of the material by adopting a sol-gel dip-coating process, so that the problem that the dental material is insufficient in corrosion resistance and wear resistance in an oral environment is further solved.

A device for stimulating a user's vestibular system is provided. The device includes: a first plurality of bone conduction transducers configured to emit vibrations to a first region of the user's skull to stimulate the vestibular system. Additionally, the device includes: a second plurality of bone conduction transducers configured to emit vibrations to a second region of the user's skull to stimulate the vestibular system. The device further includes: control circuitry configured to control the emission of vibrations from the first and second plurality of bone conduction transducers based on target directional motion perceived by the user's vestibular system.

This disclosure relates to a method, apparatus, storage medium, and electronic device for detecting the external occipital protuberance. The method includes: acquiring an NCCT image sequence of the head of a subject to be detected; determining a skull region based on the NCCT image sequence; determining a candidate region for the external occipital protuberance, including the raphe midline, from the skull region; and determining the location of the external occipital protuberance from the candidate region based on bone thickness characteristics. This method of determining the location of the external occipital protuberance is more accurate and safer.

The invention relates to a maxilla repositioning implant (1) for three-dimensional precise alignment of a maxilla displacing portion (5) relative to a remaining maxilla portion (3) that is fixed to the skull, wherein the maxilla repositioning implant (1) comprises a base (2), which has at least one plate (7) in which screw holes (10) are provided, wherein a portion of the material of the plate (7) defines, as a rim (11), a respective screw hole (10) that is provided for receiving a bone screw (17) in order to ensure fastening, via the bone screw (17) to be inserted into the respective screw hole (10), to the remaining maxilla portion (3) that is fixed to the skull, wherein the maxilla repositioning implant (1) also comprises a connection portion (4), which is spaced apart from the base (2) by connecting bridges (6), wherein the connection portion (4) comprises at least one plate (7) in which screw holes (10) are provided, and wherein a portion of the material of this plate (7) defines, as a rim (11), a respective screw hole (10) in order to ensure fastening, via a bone screw (17) to be inserted into the respective screw hole (10), to the maxilla displacing portion (5), wherein two plates (7) of the base (2) are connected to each other via a retaining bracket (8, 9).