22 results about "Mandibular body" patented technology

The invention provides a temporomandibular artificial joint replacement device, a preparation method and a surgical robot system.The temporomandibular artificial joint replacement device is characterized in that a mandibular fixing support is fixedly connected with the outer side face of the mandible of the human body, a temporal bone fixing support is fixedly connected with the outer side face of the temporal bone of the human body, a containing cavity is formed in a glenoid fossa liner, and a spherical joint head is movably arranged in the containing cavity; a base layer, a variable-rigidity elastic buffer layer and a surface layer are sequentially arranged on the inner wall of the containing cavity in the thickness direction of the side wall of the glenoid fossa liner. By means of the temporal-mandibular artificial joint replacement device, efficient simulation of the temporal-mandibular joint replacement device on a real human body temporal-mandibular joint structure can be achieved, the structural strength and the use comfort of the temporal-mandibular artificial joint replacement device are improved, and based on artificial intelligence and a surgical robot auxiliary technology, the device is simple in structure and convenient to use. The preparation function of the temporomandibular artificial joint replacement device matched with the human tissue structure and the automatic assembly surgical operation are achieved.

The application discloses a path planning method for subcutaneous deep layer injection of a mandible, which comprises the following steps: determining a target region of a subcutaneous deep layer which needs to be filled or improved in contour based on three-dimensional anatomical data of a mandible; the subcutaneous deep layer refers to a loose connective tissue gap between a subcutaneous fat layer and an upper periosteum layer; planning a main path which is substantially parallel to a baseline of a lower edge of the mandible or substantially coincides with a preset mandible contour line in the target region; the main path is located in the subcutaneous deep layer; planning a plurality of branch injection paths based on the main path; the starting points of the branch injection paths are distributed at intervals along the main path and extend alternately to the outside of both sides of the main path; and all the paths form a wheat ear-shaped topological structure with the main path as a central axis and the branch injection paths extending to both sides. The method effectively avoids excessive concentration of fillers in any dimension, thereby significantly reducing the swelling degree of local tissues caused by pressure concentration and being beneficial to shortening the recovery time.

An electroactive titanium support-reinforced composite film includes a titanium support and a film material coating the titanium support. The titanium support has a structure designed according to securing sites. The electroactive titanium support-reinforced composite film of the present invention can be bent and shaped for a close fit with a hard tissue, has excellent mechanical performance and a stable electroactive bending strength of bionic magnitude, and can prevent the collapse of surrounding tissues and tissue adhesion, effectively maintain a three-dimensional space for bone osteanagenesis and effectively promote bone injury healing, featuring ease and convenience of clinical operation and capability of promoting bone marrow mesenchymal stem cell adhesion, cytoskeleton rearrangement and induced osteogenic differentiation. The support-reinforced composite film is suitable for mandible or cranium injury repair in different ranges and has significant efficacy for clinical indications such as alveolar bone vertical bone augmentation and alveolar ridge preservation after tooth extraction.

The invention relates to the technical field of traditional Chinese medicine acupoint massage, and discloses a combined acupoint massage method for the throat part, which comprises the following steps: S1, transversely pushing the front lateral line of the neck from the joint of the upper end of the human Yingxiang acupoint and the mandible along one side of the neck by using the finger pulp of the thumb or the index finger and the middle finger; downwards, linearly and transversely pushing to the joint of the lower section of the Qihui acupoint and the clavicle with soft and deep force; according to the combined acupoint massage method for the throat, the limitation of a single acupoint is broken through, multiple areas such as the anterior neck and the suprasternal fossa and easily-neglected parts are covered, and comprehensive conditioning of related tissues of the throat is achieved; all the steps cooperate to perform precise intervention, relieve mucous membrane hyperemia, improve foreign body sensation and the like, the throat pain symptom is completely relieved, the method is safe and convenient, and the problems that an existing method is poor in curative effect and not thorough are solved.

The utility model relates to the technical field of medical instruments, and discloses inferior alveolar nerve block anesthesia injection auxiliary equipment, which is beneficial for medical staff to timely and accurately find a needle insertion point for inferior alveolar anesthesia by arranging a positioning ball and a guide cylinder; when the inferior alveolar anesthesia is carried out, the patient expands the mouth to expose the mandible condyle process (the needle insertion point position during the inferior alveolar anesthesia) near the anterior notch of the tragus, and the positioning ball is pressed against the convex part of the mandible condyle; a medical worker holds the auxiliary equipment by hand, the other hand inserts an injector into the guide cylinder, and due to the fact that the axial extension line of the guide cylinder passes through the center of the positioning ball, the medical worker can quickly find and position a needle inserting point in an oral cavity under the guidance of the guide cylinder; the operation difficulty is lowered, meanwhile, the requirement for personal skills of medical staff is lowered, the one-time success probability of anesthesia is improved, and the situation that a patient suffers from unnecessary pain due to multiple anesthesia failures is avoided.

The invention relates to the technical field of medical instruments, in particular to a temporal-mandibular joint anterior baffle prosthesis with a porous structure, which comprises a baffle plate, a lateral cranium fixing wing and a zygomatic arch fixing wing which are respectively fixed on a temporal bone scale part and a zygomatic arch, and the bottom of the baffle plate is a cambered surface and is used for fitting and limiting excessive forward movement of a mandibular condyle process. The whole prosthesis is made of a titanium alloy and PEEK composite material, and is provided with a bionic bone tissue porous structure and through holes which are distributed all over the whole, so that the lightweight structure is realized, the bone compatibility is improved, and the osseointegration is promoted. The problems that an existing prosthesis is large in weight, poor in bone compatibility, prone to causing bone degeneration and the like are solved, the prosthesis has the advantages of being light in weight and good in biocompatibility, the comfort and the osseointegration effect are improved, and postoperative discomfort and secondary operation risks of a patient can be effectively reduced.

An assembly (37) for use in ventilating a subject using a laryngeal mask (5) comprises a head-mounted harness (39) and a pusher (41). The harness is arrangeable on the subject's head (H) to support the pusher to press against the subject's (P) floor of the mouth (15). The pusher comprises laterally opposite protrusions to displace, in use and with the harness operatively supported on the subject (P), the subject's soft tissue at the left and right submandibular trigonum relative to the subject's mandible (29) and the subject's surrounding tissue (e.g. submental trigonum) in a cranial direction for pushing the subject's internal soft tissue towards the laryngeal mask in the subject's airway when the laryngeal mask is installed in the subject's airway. Each protrusion or the entire pusher is hollow, providing a recess for accommodating an operator's finger.

The invention provides a chin forming guide plate system for changing the short and flat state of the chin and a manufacturing method thereof.The chin forming guide plate system comprises an osteotomy guide plate and a positioning guide plate, and the osteotomy guide plate comprises a first positioning hole, a second positioning hole and a third positioning hole; a first positioning hole, a second positioning hole and a third positioning hole are formed in the lower jaw fixing area, cutting guide paths of a first osteotomy bone block, a second osteotomy bone block and an osteotomy removal bone block are limited, and the first positioning hole, the second positioning hole and the third positioning hole correspond to connecting hole positions in the first osteotomy bone block, the second osteotomy bone block and the lower jaw fixing area respectively; the positioning guide plate is used for limiting the cut first osteotomy bone block and the cut second osteotomy bone block at target positions according to an operation plan, and comprises a fourth positioning hole, a fifth positioning hole and a sixth positioning hole; the fourth positioning hole, the fifth positioning hole and the sixth positioning hole correspond to connecting hole positions in the first osteotomy bone block, the second osteotomy bone block and the lower jawbone retention area respectively.

The application discloses a model for predicting the risk of temporomandibular joint disorder after mandibular defect repair and a construction method thereof, and belongs to the technical field of medical artificial intelligence and clinical decision support. The method comprises the following steps: multi-dimensional quantitative collection of clinical data, acquisition of preoperative baseline indexes, intraoperative reconstruction structure parameters and postoperative follow-up compensation indexes; screening of key risk indexes and construction of a prediction function, a two-stage feature selection strategy is adopted to construct a nonlinear prediction model; model verification and correction, time stratified cross-validation is performed by adopting a time sequence sample division strategy to ensure the time sequence generalization ability of the model; and prediction tool deployment, the model is packaged as a clinical decision support tool to output individualized risk classification and early warning. Through systematic integration of multi-dimensional risk factors, the application realizes accurate prediction and early warning of the risk of temporomandibular joint disorder after operation, significantly improves the early identification rate and intervention accuracy, and has important clinical transformation value.

The invention discloses a novel coaxial electrostatic spinning stent coupling piezoelectric stimulation and AVT, the morphology of the stent simulates an extracellular matrix, adhesion, growth and differentiation of cells are facilitated, and a space is provided for growth of new blood vessels and new bones; the coaxial electrostatic spinning stent takes an artificial high polymer material as a matrix, is good in biological safety and can be degraded in vivo, and a degradation product is non-toxic; a clinical drug AVT for promoting angiogenesis is loaded in a fiber shell layer, and the defects that various angiogenesis promoting factors are high in price, short in half-life period, insufficient in potential safety and the like are overcome; the piezoelectric material ZnO for promoting osteogenic differentiation is loaded on the fiber core layer, various defects of external electrical stimulation equipment are avoided, the osteogenic differentiation is continuously promoted by collecting masticatory muscle force and converting the masticatory muscle force into piezoelectric stimulation, meanwhile, angiogenesis is promoted in combination with early release of AVT, and finally, vascularized bone regeneration of lower jawbone defects is promoted. According to the invention, the source of required materials is sufficient, the preparation technology is simple, the cost is low, the biological safety is good, and the potential clinical application prospect is achieved.

The application relates to the technical field of medical image processing, and provides a target lesion identification method and system based on medical images, which solves the problems of limited and unstable lesion identification precision. The method comprises the following steps: acquiring a cone beam CT image of a mandible before oral implantation and reference gray data; performing metal artifact reduction and adaptive histogram equalization algorithm enhancement processing with limited contrast to obtain an enhanced image; extracting a three-dimensional gray histogram of an implant target area to calculate gray skewness and gray kurtosis, and extracting a texture feature set; performing principal component analysis on the texture feature set to obtain principal component features, and splicing the principal component features with the gray skewness and the gray kurtosis into a fusion feature vector; analyzing the vector by using a density peak value clustering algorithm, and mapping the result to an anatomical partition, and performing Z-score testing in combination with the reference gray data to identify a bone lesion area. The application can realize accurate and automatic positioning of a lesion.

The invention relates to a system for detection of a sleep event of a subject. In an aspect of the invention the system comprises a sensing unit configured for mounting on the mandible, a data analysis unit, and a data link. The sensing unit comprises a gyroscope and an accelerometer configured to measure mandibular and head movements. A data analysis unit receives timestreams of rotational and acceleration data and identifies signals characteristic of sleep events. These can include frequency-based and positional / movement-based signals and a third signal representing a change in mandibular or head position. A memory stores classes of mandibular movements, each defined by sets of rotation and acceleration values. A sampling element samples both data streams during the same sampling period. The analysis unit derives measured values from the sampled data, matches them to movement classes indicative of sleep events, and generates diagnostic information for diagnosing a sleep disorder.

The invention discloses a guide plate system for an artificial temporomandibular joint replacement surgery, and relates to the technical field of artificial temporomandibular joint replacement surgeries, the guide plate system comprises an osteotomy guide plate and a positioning guide plate, the osteotomy guide plate is provided with a first binding face attached to a lower jawbone ramus trailing edge anatomical structure so as to be capable of being attached and fixed to the lower jawbone ramus trailing edge anatomical structure, and the positioning guide plate is provided with a second binding face attached to the lower jawbone ramus trailing edge anatomical structure; the osteotomy guide surface is used for guiding osteotomy operation so as to guide lineation osteotomy; the positioning guide plate is provided with a second attaching face attached to the anatomical structure of the mandibular angle so that the positioning guide plate can be attached and fixed to the anatomical structure of the mandibular angle, and the prosthesis guide part is used for guiding the prosthesis to be in place, so that the operation accuracy, safety and efficiency are effectively improved.

The utility model relates to the field of jaw joint treatment, in particular to a temporomandibular joint training teaching aid model which comprises a model body, a temporal bone mimicry part, a temporal bone mimicry part, a mandible mimicry part, a joint capsule module detachably mounted on the temporal bone mimicry part and used for simulating a mandible, and a joint capsule module detachably mounted on the mandible mimicry part and used for simulating the mandible. The mimicry mandible is rotatably connected with the joint capsule module through the rotating shaft, so that the mimicry mandible part can rotate relative to the joint capsule module. By arranging the mimic temporal bone part, the mimic mandibular bone part and the joint capsule module, all joints which may be involved in the original temporal-mandibular joint operation process are modularized, and a user can place all the joints on the model body according to own requirements. Meanwhile, the joint capsule module serving as a main object of operation training can be independently replaced after training is completed, other parts do not need to be replaced, and the teaching cost is effectively reduced.

Temporomandibular joint prosthesis (90, 902) comprising a first element (30, 302) attachable to a first side of the mandible (40) and a second element (80, 802) attachable to the first side of the cranium (50), wherein a condylar head (42, 422) is formed at one end of the first element (30, 302), wherein an articular surface (82) is formed on the second element (80, 802) which forms a counter-bearing of the condylar head (42), wherein the condylar head (42, 422) and the articular surface (82, 822) predefine an axis of rotation (A1, A2), wherein the first element (30, 302) and the second element (80, 802) are shaped such that the axis of rotation (A1, A2) is pre-oriented obliquely to a frontal plane (F) of the patient in the implanted state. as well as kit (K) consisting of two such temporomandibular joint prostheses (90, 902).

The utility model discloses a jaw pad for preventing bruxism, which belongs to the field of jaw pads for preventing bruxism and is characterized in that side shells and a front shell are in a mandibular design, the upper ends of the two side shells are provided with fit-type protruding parts, and the fit-type protruding parts extend to the mastoid process position of the head to realize complete fit of the mandibular part; an inner air bag cover is arranged in an inner cavity of the front shell, the front shell is attached to the chin carina and the chin nodule through the inner air bag cover, a side air bag cover is arranged in an inner cavity of the side shell, and the side shell is attached to the lower jaw body and the lower jaw angle through the side air bag cover. According to the jaw pad capable of preventing the night molar teeth, the jaw pad is stably fixed on the lower jaw, so that the night molar teeth are effectively prevented, the teeth are prevented from being abraded, and the sleep quality is improved. The design accords with ergonomics, the comfort degree is high, and fine adjustment can be carried out for optimal fitting. The device is made of high-quality materials, is firm and durable, can be flexibly adjusted to adapt to different users, and is simple to clean and maintain. Long-term night molar may lead to problems such as tooth damage, and the jaw pad may prevent these problems and provide a gradual adaptation process.

The invention discloses a mandible advancing device which comprises a mask type support capable of being fixed to the face of a user and a mandible fixator used for fixing the mandible body of the user, and the mandible fixator comprises a mandible body and a mandible support. The lower jaw body is at least arranged behind and in front of the chin bulge of the lower jaw body of a user, the lower jaw support is arranged below the chin bulge of the lower jaw body, and the lower jaw support can be connected with the lower jaw body; the traction component is respectively connected with the mask type bracket and the lower jaw fixer, and is configured with the mask type bracket as a traction point to pull the lower jaw body and / or the lower jaw support; the force of the mandible body acting on the front and back of the mandible body chin augmentation is further adjusted to control the mandible to move forwards and / or the acting force of the mandible support acting on the mandible body chin augmentation is adjusted to control the mandible to move upwards.

The auxiliary guide plate assembly comprises a drilling guide plate, an osteotomy guide plate and a positioning guide plate, the top of the drilling guide plate is matched with the neck of a lower anterior tooth, the bottom of the drilling guide plate is matched with the lower edge of a mandible, and a fixing hole is formed in the drilling guide plate; the osteotomy guide plate is in an isosceles trapezoid shape, and the bottom edge of the osteotomy guide plate is matched with the lower edge of the mandible. The positioning guide plate is in a step shape and comprises an upper fixing part, a middle connecting part and a lower fixing part, and the two ends of the middle connecting part are connected with the upper fixing part and the lower fixing part respectively. Compared with the prior art, the utility model has the advantages that: the utility model is improved in a way that the lower incisor neck and the lower jawbone lower edge are taken as upper and lower edge fixed points, the drilling guide plate is prepared, the drilling position is firstly positioned, and then the osteotomy guide plate is fixed by two holes in the lower row to form the osteotomy island fixed on the lower jawbone surface instead of an osteotomy bridge in the prior art, so that the pendulum saw operation is convenient; and displacement is not easy to occur. The guide plate is shortened, so that the guide plate can be conveniently placed, and chin nerve injury is avoided.

This invention discloses a fixation table for zebrafish microsurgery, belonging to the field of biological experimental instrument technology. The fixation table includes a culture device, a silicone fish sleeve, a compression ring, a universal ball joint mechanism, and a connector. The silicone fish sleeve is a hollow, flexible, contoured sleeve with a compression ring at its expanded end. By rotating the compression ring, the flexible wall of the silicone fish sleeve contracts inwards uniformly, wrapping and fixing the zebrafish's body in a non-invasive manner. The locking end of the fish sleeve exposes the fish's head, facilitating surgical operations. The universal ball joint mechanism connects to the compression ring via the connector, enabling rapid adjustment and locking of the fish body at any angle in three-dimensional space, meeting the needs of various surgical positions such as upright, inverted, and lateral placement. This invention solves the problems of easy slippage, uneven pressure, difficulty in body position adjustment, and cumbersome operation in existing zebrafish fixation methods, and is suitable for various delicate microsurgeries such as mandibular bone injuries, intraocular injections, and craniotomy.

A fossa-type three-dimensional omnidirectional jaw position frame device is provided, which realizes mutual conversion between a denture arrangement mode and a jaw position adjustment mode by using lock conversion between a mandibular body base, a mandibular ramus assembly, and a maxillary body base. [Solution] The fossa-type three-dimensional omnidirectional jaw position frame device uses two mandibular ramus synchronization devices to synchronize the two mandibular ramus, and also synchronizes three-dimensional operation by interlocking the incisal rods in the corresponding condylar fossa and incisal fossa, thereby realizing the operating state of the mandibular dentition in the alternating cusp range.

A device used in conjunction with fixation hardware to provide a two-stage process to address the competing needs of immobilization and re-establishment of normal stress-strain trajectories in grafted bone. A method of determining a patient-specific stress / strain pattern that utilizes a model based on 3D CT data of the relevant structures and cross-sectional data of the three major chewing muscles. The forces on each of the chewing muscles are determined based on the model using predetermined bite forces such that a stiffness of cortical bone in the patient's mandible is determined. Based on the stiffness data, suitable implantation hardware can be designed for the patient by adjusting external topological and internal porous geometries that reduce the stiffness of biocompatible metals to thereby restore normal bite forces of the patient. A method of 3D printing nitinol to create a patient-specific device to facilitate the establishment of a normal stress-strain trajectory in grafted bone.