47 results about "Skull surface" patented technology

The invention discloses a three-dimensional craniofacial reconstruction method based on the overall facial structure shape data of Chinese people, comprising the following steps of: (1) acquiring a thickness distribution model of a facial soft tissue based on the statistic analysis of a large amount of human head CT (Computed Tomography) data; (2) unfolding the soft tissue layer and the skull surface layer of a human head through a cylinder, and projecting the soft tissue layer and the skull surface layer to a two-dimensional flat surface, representing the soft tissue shape and the skull shape by using a two-dimensional depth map, and training a radial basis function network to realize the change between the skull to be reconstructed and the common soft tissue thickness distribution form; (3) constructing a shape subspace of local organs of the reconstructed face based on the craniofacial facial structure shape classification of human species, and learning the mapping between the craniofacial local shape and the local shape of the reconstructed face; (4) correcting the reconstructed face model by combining the integral soft tissue distribution and the local characteristic shape deformation, i.e. completing three-dimensional craniofacial reconstruction and correctness of the input skull by adding the two-dimensional depth maps of the soft tissue shape and the shape of the skull to be reconstructed; and (5) synthesizing a complete texture graph of the face through facial texture mapping by using orthogonal pictures, and rendering the skin color and the hair style of the reconstructed human picture to enhance the reality sense of the human picture. By applying the method, the problems of missing reconstruction details and lack of individual characteristics are solved, the manufacturing cost of other anthropology researches and reconstruction technologies is saved, and the working efficiency is improved. The invention has high automation degree and simple operation.

The present invention relates to an “structure improvement of the pillow”, which comprises a central main pillow and two lateral sub-pillows, wherein, said central main pillow is trapezoid in dimension with height of pillow top and central length such that the height of pillow top approximately equals the distance between the outer hind skull surface to the outer surface of the normal arched cervical vertebra when people lies on one's back while the height of central length approximately equals the distance between the outer side surface of two ears of human head with slight clearance for tolerance; said lateral sub-pillow is trapezoid in dimension with height of pillow top and the height of pillow top approximately equals the distance between the outer side skull surface to the outer side surface of the shoulder when people lies on one's side; The characterized is that a pair of symmetrical skew-angled arrangement for said central main pillow and each of said two lateral sub-pillows is formed in disposal so that the user head can be exactly placed on and closely supported by one of the two lateral sub-pillows completely when the user lies on one's side sleeping posture; Besides, a sunken dent space is created on the central top of the lateral sub-pillow so that the user ear will be not pressed without uncomfortable feeling.

The invention is particularly suitable to restitution of complex deformity of skull surface. Based on computer image processing and CAD, emulation of 3D segmentation and reconstruction is carried out for structure of skull surface matched to real body. Qualitative even accurate quantitative analyses are carried out for shape and structure of injured skull (including eye socket). The invention discloses layered osteotomy method of splitting off skull socket and surface along natural curvature in middle. The method includes following steps: in operation, fixing moved position promptly; embedding bone tractor to move position gradually; reconstructing skull surface such as inverted valve with vessel pedicle behind the ear. The invention reconstructs fine figure of face to recover normal function.

The invention discloses a skull side surface image analysis method based on a neural network and a random forest, and a system. After imaging equipment (commonly oral and maxillofacial tomography equipment, CBCT in short) finishes patient skull side surface exposure and picture combination, an imaging result is input into a skull side surface dissecting characteristic marking module. Through a series of computer automatic identification and marking processes, marking operation of important dissecting structures on the image is finished, and high-precision positions of characteristic points are output. Afterwards a skull side surface report generating module receives the position of each dissecting characteristic point after artificial verification and adjustment by the skull side surface dissecting characteristic marking module and finishes skull surface medical analysis, wherein a final skull side surface analysis report is used as a subsequent diagnosis basis of the doctor. The method and the system have advantages of settling a problem of performing quick automatic analysis on the skull side surface image, greatly reducing physical labor of a doctor in a skull side surface imaging analysis process, shortening a diagnosis period, improving system predicting stability and preventing abnormal results.

The invention discloses a carp electrode transforation implantation brain stereo positioning method, which belongs to the technical field of brain stereo positioning. The invention mainly solves the problem of accurate positioning in electrode implantation into brain without craniotomy. The method comprises the following steps: drawing a straight line centrally from the carp mouth to the intersection point between the head and the first scale of the trunk, and drawing a straight line parallel to the central line based on the upper edges of two orbits respectively; drawing a connection line along the front edges of the two orbits; drawing a connection line along the rear edges of the two orbits; drawing a connection line between the joint moving joint points of the operculum bones on the two sides and the orbit bones; and drawing a line through the joint between the head and the first scale of the trunk and vertical to the central line. The skull surface is divided into 6 areas by the 7 lines, each area representing a coordinate system. The mouth, dorsal fin and operculum on the two sides clamp 4 points for fixing; in the positioning of a brain stereotaxic instrument, an electrode is implanted into the brain along a skull hole, and magnetic resonance imaging equipment navigates and corrects deviation so as to realize three-dimensional accurate positioning without craniotomy. The invention is applicable to the collection of brain wave of aquatic animals or control on biological behavior by conduction of electrical signals.

A fixation device including a base structure such as a faceplate having an inferior surface capable of contacting a surface of a skull of a patient, having a superior surface, and defining at least two securement features. Each securement feature can be engaged by a cranial fastener to attach the faceplate to the skull. The device further includes a fixation structure such as an alignment plate or a flexible fixation member carried by the base structure and positionable at least one of (i) over an opening in the skull and (ii) within an opening in the skull. At least one surface of the fixation structure defines at least one channel in which an intracranial device is capable of being placed, and further defines at least one fixation feature to enable the intracranial device to be secured to the fixation device.

The invention discloses a magnetic adsorption type decontamination robot comprising a triangular vehicle body shell, an electromagnet sucking disc and plate-shaped lithium battery connecting component, a lithium battery and signal receiver module connecting component and decontamination brush discs. A vehicle body frame is fixedly mounted on the bottom of the triangular vehicle body shell, and driving motors and the lithium battery and signal receiver module connecting component are arranged in a spatial area formed by the portion above the triangular vehicle body shell and the triangular vehicle body shell. The other end of a connecting rod is hinged with a hydraulic rod, and a rotatable camera is mounted on the connecting side surfaces between the support rod and the hydraulic rod. According to the magnetic adsorption type decontamination robot, during operation, electromagnet sucking discs at the bottom of the vehicle body are energized; the decontamination robot is adsorbed on thesurface of the steel hull; and the driving motors work to drive crawler belts, so that the decontamination robot starts to advance. In addition, rotating motors drive the decontamination brushing discs to rotate so as to remove the attachments on the skull surface.

The present invention discloses a beam assisted positioning method for craniotomy and a positioning system of the beam assisted positioning method for craniotomy. The system comprises a preoperative planning system, a beam positioning device and a binocular vision camera with a three-dimensional coordinate system registration function; and the positioning method comprises: 1) based on CT images, conducting three-dimensional view reconstruction of skull surface and scalp of patients; 2) marking a head patch of the patients in three-dimensional views and planning a skull windowing path and a scalp incision path; 3) using the binocular vision camera to detect heads the patients the patch at a beam emitting device to obtain a transformation relationship between a three-dimensional view coordinate system and a beam coordinate system through spatial registration, so as to accurately drive beam emitted by the beam emitting device to be consistent with the planned surgical path; and 4) finallyusing a beam movement method to confirm the scalp incision path and skull windowing path by doctors. The positioning method and system avoid excessive dependence on human experience, reduce preoperative preparation time, relieve medical staff fatigue, and improve safety and rationality of the craniotomy.

The invention discloses a manufacturing method of an individualized brain space 125I seed implantation auxiliary localizer, comprising the following steps: S1, obtaining head CT scanning data, determining an operation surface and three auxiliary localization surfaces on the brain CT image data; S2, determining the operation surface and three auxiliary localization surfaces on the head CT image data; S2, determining the coverage area of the positioner on the operation surface and the three auxiliary positioning surfaces; S3, spatial repositioning of the positioner; S4, designing the structure of each surface of the positioner; S5, using 3D printer, the designed brain tumor 125I seeds are implanted into the positioner to print the integrally formed skull surface component. The invention utilizes the individualized brain space stereotaxic positioning technology, CT image data, 3D printing technology and 125I seed TPS treatment planning system are used to make 3D printing brain tumor 125Iseed implantation localizer, which can assist the planed implantation of 125I seed into malignant intracranial brain tumor, minimally invasive diagnosis and interventional treatment of brain tumor.

The invention discloses a skull surface fixing cap, wherein the skull surface fixing cap comprises a brimless round cap part, a jaw fastening strap and a convex part which extends to eyebrows, wherein two sides of the brimless round cap part are connected to two ends of the jaw fastening strap; the convex part is integrally connected to one side of the outer edge of the brimless round cap part, and the convex part is located between two ends of the jaw fastening strap; a first convex device is arranged at the convex part and the first convex device is aligned with the eyebrows of a human body; and a second convex part is arranged at the lower side of the jaw fastening strap and the second convex device is aligned to chin of the human body or the front side of a trachea. According to the skull surface fixing cap provided by the invention, a steel ball serves as a reference substance, and the steel ball, which is sutured in the fixing cap, is kept fixedly; and in addition, the fixing cap is recyclable.

The invention relates to a method and a device for processing 3-D image date of a skull (S), wherein image date are selected or calculated for the 3-D image data and are presented as 2-D image data in a plane. For fast, overview-like inspection of the skull (S), the skull surface (O) is determined from the 3-D image data, and the corresponding image data at a defined distance (d) from the skull surface (O) are determined and presented as 2-D image data in a plane.

The invention discloses a cryopreservation method of an autologous skull. The method is used for solving the problem that autologous skulls are polluted easily by a preservation medium in the prior art and can be used to improve bone growth activity. Preservation is carried out by sequentially adopting the following steps: performing pretreatment, performing washing, performing pre-freezing, preparing a gel, performing radiation sterilization, performing freezing storage and performing post-treatment. A preparation process of the gel is combined with preservation of an autologous skull, then the gel with growth activity is embedded in gaps on the surface of the skull, and growth of bones is promoted after replantation. According to the invention, a preparation process of polyvinyl alcohol(PVA) hydrogel carrying nano-hydroxyapatite (n-HA) is combined with preservation of the autologous bone, the PVA hydrogel in a liquid state is in full contact with bone tissues, and the PVA hydrogel forms a gel when the skull is taken out, so that adhesive force of the gel on bones is improved, exogenous pollution is avoided, and bone growth after replantation can be promoted.

The invention provides a bendable pulse generator and an implantable nerve electrical stimulation system. The bendable pulse generator comprises a main body part and a top cover part, a first part component is installed on the main body part, a second part component is installed on the top cover part, and the second part component and the first part part component can be connected through a circuit; and a soft coating layer partially or completely coats the main body part and the top cover part, and a soft connecting part is formed between the main body part and the top cover part. The invention discloses the bendable pulse generator, the main body part and the top cover part can be relatively bent for a certain angle through the flexible connecting part; when the bendable pulse generatoris implanted into the head of a human body, only the main body part needs to be installed in the skull groove, and the top cover part is bent by a certain angle relative to the main body part and thenattached to the surface of the skull, so that the formed skull groove is small and shallow, the operation difficulty can be reduced, the postoperative effect is good, and the pain of a patient is small.

The invention discloses an individualized brain space stereo positioning technology, by introducing a face into the outer surface of the head, Concept of Axis and Angle, Repartition Name. The three-dimensional stereoscopic structure of four faces, five axes and two angles, which is composed of the operation face, three auxiliary locating faces, five axes and two angles, is acquired. Then the imagedata of the skull surface is obtained from the head CT, and the three-dimensional stereoscopic structure of four faces, five axes and two angles of the skull is printed into an integral skull surfacecomponent by using 3D printer. The three-dimensional stereoscopic structure of four faces, five axes and two angles of the skull is obtained. Complete reduction of the head surface component and theskull surface, so that the points on the operative surface and the points on the skull surface component completely coincide, assisting minimally invasive diagnosis, interventional treatment of braindiseases. The invention can realize multi-needle track, different angles and multi-point stereoscopic positioning of brain space from extracranial to intracranial brain pathological changes at the same time.

The invention provides a laser locator for brain stereotaxic positioning, relates to the technical field of test tools, and solves the problems that in the prior art, when a brain stereotaxic instrument is used, positioning is inaccurate and infection is possibly caused when a marker pen is used for marking the position on the surface of a skull. The laser positioner comprises a base connector, a position adjusting mechanism and a laser generator, the laser generator is connected with the base connector through the position adjusting mechanism, the base connector is connected with the brain stereotaxic apparatus, and the spatial position of the laser generator can be adjusted through the position adjusting mechanism. When the laser locator is used, the laser locator is firstly fixed on a brain stereotaxic instrument base through a base connector; then a target point is found on the surface of the skull through the datum point by utilizing a brain stereotaxic instrument, and when the needle point is close to the surface of the skull, the position adjusting mechanism is adjusted, so that a laser point emitted by the laser generator is accurately positioned on the skull below the needle point of the microsyringe, and whole-course real-time marking can be realized in the subsequent polishing process.