157results about "Skull" patented technology

The invention relates to a bone cement injection device for skull repair. The bone cement injection device comprises an outer sheath tube, a separate injection structure and an outer push rod, a pushing channel extending in the axial direction is formed in the outer sheath tube, the tube wall of the outer sheath tube is provided with a first hole group and a second hole group which are symmetrically distributed by 180 degrees in the circumferential direction, and each hole group comprises a plurality of via holes arranged at equal intervals in the axial direction; the two symmetrically-arranged separated injection structures are arranged corresponding to the first hole set and the second hole set respectively, each separated injection structure comprises a separated injection pipe, the separated injection pipe is inserted into the pushing channel, a perfusion channel extending in the axial direction is arranged in the separated injection pipe, the near end of the perfusion channel is through, and the far end of the perfusion channel is closed; the rigid contact pins are arranged at equal intervals in the axial direction of the separate injection pipe and penetrate through the side wall of the separate injection pipe at the same circumferential angle, and the inner end of each contact pin is communicated with the perfusion channel. The repairing block can be effectively filled with bone cement, and the effect after skull repairing is improved.

Orthopedic implants and related surgical methods for using same. The implants have suture bore geometries that facilitate performance of the surgical methods, thereby providing for improved optimal biomechanical force application in various anatomies. The implants include suture bores that have an angled / diagonal, or skewed, orientation within the anatomical planes (lateral / sagittal and frontal / coronal). The suture bores have the skewed orientation so that the adjacent soft tissues (i.e., tendons or ligaments) can be advanced via the suture therethrough in superior-inferior and inferior-superior directions. Openings, or holes, at the ends of the suture bores are configured to approximate the adjacent associated soft tissue to the implant.

The present invention relates to a medical device manufactured using the additive manufacturing process (3D printing). It is a medical device used preferably as a bone graft composed of a porous structure based on bioceramics based on β-tricalcium phosphate (β-TCP) or hydroxyapatite, which may or not contain nanostructures in its composition, for example: carbon nanostructures (graphene, graphene oxide, reduced graphene oxide, carbon nanotubes, etc.) and, in preferred embodiments, stem cells and polymeric membrane. Also, the present invention relates to the use of this device as a bone graft and the process of preparing this device.

The present invention relates to a guided bone regeneration device that is intended for the reconstruction of a buccal bone defect and is composed of an optionally micro-perforated smooth wall which is made of titanium and has a shape that covers said buccal bone defect.The present invention also relates to a process for manufacturing a device of the invention, comprising a step of constructing the device of the invention according to a three-dimensional representation obtained by means of a technique of maxillary-dental imaging of the bone defect.

The present disclosure is directed to an expandable medical implant for the repair of cranium defects in adolescent patients. The implants of the present disclosure can include a plurality of interconnected links that are movable with respect to each other as the underlying cranium grows and expands.

A method for providing a bending mold for an off-the-shelf implant, the method comprising obtaining information about a bony anatomy of a patient from one or more medical images; developing a virtual three-dimensional model of the bony anatomy based on the information about the bony anatomy, selecting an off-the-shelf implant, simulating a bending of the off-the-shelf implant using a three-dimensional model of the selected off-the-shelf implant and the virtual three-dimensional model of the bony anatomy to obtain a virtually bent implant having a first, bone-facing, surface and a second surface opposite the first surface, using the virtually bent implant, designing a bending mold mating with the first or the second surface, and based on the design of the bending mold, manufacturing the bending mold using additive manufacturing.

To provide a tibial prosthesis having a distal mechanism for non-cemented fixation.SOLUTION: Techniques described herein relate to a tibial prosthesis for a knee arthroplasty including a baseplate and a tibial keel. The baseplate arbitrarily includes a distal surface 104 sized and shaped to substantially cover a proximal resected surface of a tibia; a proximal surface opposite the distal surface, the proximal surface having a lateral compartment and a medial compartment opposite the lateral compartment; a periphery extending between the distal surface and the proximal surface; a first layer of porous material forming at least a majority of the distal surface and extending to the periphery; and a second layer of nonporous or relatively less porous material having a plurality of reference features extending through the first layer, wherein the plurality of reference mechanisms form at least a portion of the distal surface. The tibial keel extends distally from the distal surface to define a longitudinal tibial keel axis.SELECTED DRAWING: Figure 1C-D

A bone implant (10) comprises a base section (12) which occupies at least 70% of the total volume of the bone implant (10) and consists of a first biocompatible material, and at least one connecting section (14) which occupies a maximum of 30% of the total volume of the bone implant (10) and consists of a second biocompatible material, wherein the second biocompatible material has an improved osseointegrative capacity compared to the first biocompatible material.

The application relates to the technical field of medical devices, and particularly discloses an expansion assembly for occipitoatlantoesthesis reconstruction, which comprises a plate body, one side of the plate body is provided with a groove, the plate body is provided with a plurality of first connecting parts, the first connecting parts are located on the outer periphery of the groove and are arranged at intervals, and the first connecting parts are used for being connected with the occipital bone and / or the atlas; the plate body is provided with at least one second connecting part, the second connecting part is arranged on the groove bottom, and the second connecting part is used for fixing the meninges. The above-mentioned arrangement is helpful for relieving the compression of the brain tissue and restoring the circulation of the cerebrospinal fluid. Since the plate body has the supporting capacity, when the intracranial pressure increases, the plate body will not be deformed, a relatively stable support is formed on the meninges, the probability of cracks at the suture of the meninges is reduced, the probability of the overflow of the cerebrospinal fluid and the meningeal outpouching is reduced, the recovery speed of the operation is improved, the scar adhesion is reduced, the circulation of the cerebrospinal fluid is smooth, and the probability of the secondary operation is reduced.

The invention discloses a floating bone flap and skull connecting device which comprises a fastening screw, a connecting piece and a plurality of traction lines, a first through hole is formed in the middle of the connecting piece, the fastening screw is sleeved with the connecting piece through the first through hole, and the fastening screw is locked in the middle of the upper end face of a floating bone flap. The connecting piece is located between the head of the fastening screw and the upper end face of the floating bone flap, a slipknot is arranged at one end of each traction line, and a second through hole is formed in each slipknot; a plurality of third through holes are formed in the edge of the floating bone flap at intervals, and a plurality of fourth through holes are correspondingly formed in the edge of the skull window; the other end of each traction line penetrates through the corresponding third through hole, the corresponding fourth through hole and the second through hole of the slipknot at one end of the traction line and then is connected to the connecting piece. After the skull flap is connected with the skull, tension and flexibility are good, the skull flap floats upwards sufficiently, and intracranial pressure reduction of a patient can be sufficient and thorough; and after the intracranial edema period, secondary fixation of the floating bone flap is facilitated, and the bone flap is prevented from sinking.

A universal low-profile intercranial assembly includes a mounting plate and a low profile intercranial device composed of a static cranial implant and an interdigitating functional neurosurgical implant. The low profile intercranial device is shaped and dimensioned for mounted to the mounting plate.

A device for mechanical securement to hard tissue of a subject, the hard tissue having an end surface defining a direction of curvature such that over at least a portion of the surface, a total curvature of at least 180 degrees is defined, the device comprising a body portion comprising at least four contact points, three contact points of the four contact point span over 180 degrees of total curvature of the end surface in a plane defined by the three contact points, and a fourth contact point outside the plane, the four contact points providing mechanical securement of the body portion to the hard tissue.

The disclosure relates to a surgical foam structure comprising an open-porous body made of at least one biocompatible implant material, wherein the porous body is dimensioned such that it fulfills at least one of the following: the porosity is in the range of 0.81 to 0.91 %, and the average pore diameter is in the range of 1.10 to 1.41 mm. The disclosure also relates to a system comprising the foam structure and a surgical fixation device for attaching the foam structure to bone.

The invention relates to the technical field of computer-aided skull repair prosthesis design and manufacturing, in particular to a computer-aided skull repair prosthesis design and manufacturing system. Comprising a form prediction unit used for solving an optimal form coefficient and generating an initial prosthesis form; the constraint evaluation unit is used for calculating to obtain a prosthesis conflict index and dividing conflict grades; the correction field generation unit is used for deconstructing a physical violation amount in response to the prosthesis conflict index, and solving and generating a dense displacement field covering all vertexes of the prosthesis through a form correction propagation model; and the closed-loop optimization unit is used for performing geometric deformation on the initial prosthesis form by applying the dense displacement field to obtain a corrected prosthesis form, and re-submitting the corrected prosthesis form to the constraint evaluation unit to execute a grading final edition strategy. According to the method, the contradiction between anatomical fidelity and clinical safety constraint in skull repair is solved by constructing a system comprising morphological prediction, constraint evaluation, correction generation and closed-loop optimization.

A low-profile intercranial device including a low-profile static cranial implant and a functional neurosurgical implant. The low-profile static cranial implant and the functional neurosurgical implant are virtually designed and interdigitated prior to physical assembly of the low-profile intercranial device.

Orthopedic implants and related surgical methods for using same. The implants have suture bore geometries that facilitate performance of the surgical methods, thereby providing for improved optimal biomechanical force application in various anatomies. The implants include suture bores that have an angled / diagonal, or skewed, orientation within the anatomical planes (lateral / sagittal and frontal / coronal). The suture bores have the skewed orientation so that the adjacent soft tissues (i.e., tendons or ligaments) can be advanced via the suture therethrough in superior-inferior and inferior-superior directions. Openings, or holes, at the ends of the suture bores are configured to approximate the adjacent associated soft tissue to the implant.

A bone implant (10) for encapsulating bone material (12) is provided. The bone implant includes a cover (18), which may be a biodegradable mesh. The cover is configured to be wound to a certain diameter to at least partially encapsulate the bone material within the cover. In some embodiments, the cover includes a body portion (80) and a closure portion (82) adjacent to the body portion. The closure portion is configured to hold the cover in its wound configuration to a predetermined diameter to at least partially encapsulate the bone material. A kit and method of using the bone implant are also provided.

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 tantalum coating titanium metal 3D printing structure comprises a tibia head, a tibia and a gasket, the wedge-shaped gasket is obliquely inserted between the tibia head and the tibia, the gasket comprises a gasket tongue, a gasket plate and a through hole I, the gasket tongue, the gasket plate and the through hole I are integrally formed, the gasket plate is located at the tail end of the gasket tongue, and the gasket plate is located at the tail end of the gasket tongue. The width of the gasket plate is 2-5mm larger than that of the gasket tongue, two protruding through holes I are formed in each of the two sides of the gasket plate, four screws penetrate through the through holes I to be fixed to the tibia head and the tibia, and the situation that the low position of the patella and the track of the patella change after an operation is eradicated.

A bone part is repaired by a process. A first implant is attached to a first bone part. The first implant corresponds to an intraoperatively defined or an intraoperatively selected cutting path. A preoperatively defined second implant is attached to the first implant. The first implant and the second implant together augment the first bone part.

The present disclosure discloses a tibial plateau prosthesis with trabeculae containing zirconium-niobium alloy on oxidation layer and a preparation method thereof. The preparation method uses zirconium niobium alloy powder as raw material, conducting a 3D printing for one-piece molding to obtain an intermediate product of the tibial plateau, performing hot isostatic pressing and cryogenic oxidation to obtain the tibial plateau prosthesis comprising a proximal trabecular layer and a distal trabecular layer; the pore size and porosity of the proximal trabecular layer are evenly arranged, and the distal trabecular layer are partitioned; the topological structure of the trabeculae of the tibial plateau prosthesis is gradiently distributed from three dimensions; the micro-strain in the 64%-72% region of the finite element model of the tibial plateau bone tissue is between the minimum effective strain threshold and the supraphysiological strain threshold, which increases the mechanical adaptation of the prosthesis.

To provide a method of designing a craniomaxillofacial implant that is a rigid plate of substantially uniform thickness, and a patient-specific craniomaxillofacial implant obtained by the method.SOLUTION: The method includes: positioning a surface element of a plate as a departure from a reference location within a base outline, the departure being represented by a fraction of the length of a normal path projected from the reference location to a predetermined soft tissue layer at a supported location within an anatomic region of interest, and the fraction being based upon a required patient-specific support at the supported location. The patient-specific craniomaxillofacial implant is formed into a warped rigid plate of substantially uniform thickness.SELECTED DRAWING: Figure 1

A customized resorbable three-dimensional scaffold for oral and maxillofacial bone grafting involves merging two sets of three-dimensional information obtained from a patient, the first set includes three-dimensional bone information and the second set includes three-dimensional teeth and tissue information. The merged information is used to generate a three-dimensional shape of the bone to be regenerated, a three-dimensional position of the missing tooth / teeth, and a three-dimensional model of the customized resorbable three-dimensional scaffold for oral and maxillofacial bone grafting. The three-dimensional model is used to generate the customized resorbable three-dimensional scaffold and resorbable connectors for the customized resorbable three-dimensional scaffold.

The present invention discloses a method, system, and device for matching skull processing materials. The matching method includes: obtaining multiple skull data of a skull to be processed and multiple material data of materials to be matched; converting the skull data and material data into point clouds to obtain skull point cloud data corresponding to the skull to be processed and material point cloud data corresponding to the materials to be matched; performing concave-convex surface segmentation on the material point cloud data to obtain material concave-convex surface data; and determining a target processing material that matches the skull to be processed based on the skull point cloud data and the material concave-convex surface data. Compared with the existing technology, by obtaining point cloud data of the skull to be processed and the materials to be matched, and performing concave-convex surface segmentation on the material point cloud data, automated matching of the target processing material for processing the skull to be processed is achieved, solving the problems of low efficiency, large errors, and excessive material waste in traditional manual matching. While avoiding human errors, it significantly improves matching efficiency and accuracy and reduces material costs.

This invention provides a high-strength tibial support with osteoinductive properties and its preparation method. The preparation method involves preparing a reinforcing material and a matrix material; fabricating a multi-porous metal tibial support skeleton from a biodegradable metal material; placing the prepared multi-porous metal tibial support skeleton and the matrix material into a mold cavity; uniformly filling the pores of the multi-porous metal tibial support skeleton with the matrix material; and then pressing and molding the skeleton through the mold cavity. After pressing and molding, a semi-finished tibial support is obtained, which is then subjected to high-temperature sintering to obtain a high-strength tibial support with osteoinductive properties. This invention solves the technical problems of existing tibial support fixation methods using bone cement and bio-type fixation, which lead to bone cement particles easily entering the pulmonary circulation through the bloodstream and poor adhesion between the bio-coating and the prosthesis, resulting in coating detachment during embedding. This invention can be widely applied to the preparation of high-strength tibial supports with osteoinductive properties.

Graft for a bone defect, in particular a tibial head graft for a knee-joint endoprosthesis. It comprises a sleeve-like inner body (2) for implantation at one end of a long bone (99). An outer face of the inner body (2) is designed as a bone contact face (20) for bearing on the surrounding bone margin (97). According to the invention, an outer shell piece (3) is provided which, as a bone replacement piece, is doubled onto the outside of the inner body (2) for filling a defect at the cortical bone margin (97) and is not dimensioned peripherally, such that, in the circumferential direction, it covers only a part of the outer circumference of the inner body (2). The doubled outer shell piece (3) forms a filler piece for a bone defect (bone window 96) at the bone end. Closure of the bone window (96) is achieved, and unwanted contact between the graft and surrounding soft-tissue parts is avoided. Moreover, the graft is thus also supported in the region of the bone window (96). Parts of the bone margin (97) that are still present can thus remain intact, allowing the greatest possible preservation of naturally present bone substance.

The present disclosure provides a bioresorbable foam closure device for trans-nasally closing an opening in a base of a skull. The closure device comprises a phase-separated polymer. The device includes a stem portion having a proximal end and a distal end, and a head portion at the distal end of the stem portion. The closure device is deformed from a free shape to a constricted shape, inserted through a nasal cavity and into the opening, and released to at least partially revert back to the free shape such that the stem portion fills the opening and the head portion abuts cranium and dura to secure the closure device in position and seal the opening.

The present invention relates to a medical device manufactured using a layered manufacturing method (3D printing). This medical device comprises a porous structure based on bioceramics based on β-tricalcium phosphate (β-TCP) or hydroxyapatite and is preferably used as a bone graft. Its composition may or may not include nanostructures, for example, carbon nanostructures (graphene, graphene oxide, reduced graphene oxide, carbon nanotubes, etc.), and in a preferred embodiment, stem cells and a polymer membrane. The present invention also relates to the use of this device as a bone graft and the manufacturing process of this device.