1329results about "Bone implant" patented technology

An expandable intervertebral implant may include a superior endplate configured to engage a superior vertebra, and an inferior endplate configured to engage an inferior vertebra, wherein the inferior endplate may be spaced apart from the superior endplate by a gap. The expandable intervertebral implant may further include a first slider moveable along a first direction to urge linear expansion of the gap, and one or more cams each coupled to the first slider. The one or more cams may be configured to urge angular expansion of the gap in response to at least one of: rotation of the one or more cams about a rotation axis, and motion of the one or more cams along the first direction.

The invention discloses a titanium alloy feeding implant and a preparation method thereof, and the preparation method comprises the following steps: carrying out activating treatment on a biodegradable bonding system in an inert gas environment to form an expansion-state binder precursor, and then mixing titanium alloy powder and the precursor which are proportioned in stages in a multi-stage mixing device in stages to obtain the titanium alloy feeding implant. Sequentially executing low-temperature activation, melting and dispersing operations to prepare uniform feed; carrying out vibration-assisted injection molding on the feed to generate a green body with a multi-stage pore structure; removing the binder step by step and reserving pores by adopting a synergistic degreasing process of supercritical fluid extraction, microwave decomposition and gas phase cleaning; densification sintering molding of the titanium alloy implant is realized through pre-sintering and plasma activating treatment, so that an implant finished product is formed; according to the process, through the coupling design of innovation of a biodegradable binder system and an intelligent degreasing process, on the premise that the biological safety of the titanium alloy implant is ensured, precise forming and sintering densification control of a complex pore structure are synchronously achieved.

One aspect of the present disclosure relates to a system for treating obstructive sleep apnea in a subject. The system can include a power source and a neuromuscular stimulator in electrical communications with the power source. The neuromuscular stimulator can include a controller and at least one electrode. The controller can be configured to receive certain power and stimulation parameters associated with a therapy signal from the power source. The at least one electrode can be configured to deliver the therapy signal to a target tissue associated with control of a posterior base of the tongue of the subject.

An implant includes a plate having a plurality of fastener holes, the plurality of fastener holes being configured to receive a plurality of fasteners, respectively; a spacer coupled to the plate and configured to be inserted into a treatment region; and a fastener lock movably coupled to the plate and configured to lock the plurality of fasteners.

The present application relates to chondrocyte compositions and kits comprising morselized cartilage tissue particles and a biodegradable matrix. Applications and methods of using the chondrocyte composition for cartilage grafts, repairing cartilage injuries and defects, and joint repair are provided.

The embodiment of the invention relates to the technical field of brain-computer interfaces, in particular to a brain-computer interface module, a digital skull implant and an integration method and related application of the digital skull implant. The digital skull implant comprises a skull prosthesis and a brain-computer interface module, wherein the brain-computer interface module and the skull prosthesis are integrated; the brain-computer interface module comprises an ultrasonic transducer used for sending ultrasonic signals to the brain and collecting brain echo signals. The brain-computer interface module comprises an ultrasonic transducer used for sending ultrasonic signals to the brain and collecting brain echo signals. The brain-computer interface module is configured to be integrated with a skull or a skull prosthesis. In this way, the implantation structure integrating the brain-computer interface module in the skull form can have good mechanical strength and biocompatibility, complete implantation and wireless design can be achieved, and ultrasonic waves penetrate through the skull to conduct precise stimulation on the brain area.

A bone anchoring surgical system comprising a bone anchoring device comprising a bone anchor body configured to anchor a bone; and a deformable structure associated with the bone anchor body and located distally or proximally to the bone anchor body, the deformable structure configured to expand following deployment thereof in a target inner body skeleton position.

A method of preparing and / or delivering an osteochondral plug may include, positioning a tissue graft on a cutting guide, wherein the tissue graft may have been removed from a larger body of tissue to define a shaped surface. The tissue graft may include a top surface having a cartilage surface. The method may further include advancing a first cutter along a cutting direction toward the tissue graft to cut the tissue graft to form the osteochondral plug having an external wall parallel to the cutting direction and transverse to the top surface. Positioning the tissue graft on the cutting guide may include placing the shaped surface on a registration surface of the cutting guide. The registration surface may have a reference shape that corresponds to a shape of at least part of the shaped surface.

An expandable intervertebral implant may include a superior endplate configured to engage a superior vertebra, and an inferior endplate configured to engage an inferior vertebra, wherein the inferior endplate may be spaced apart from the superior endplate by a gap. The expandable intervertebral implant may further include a first slider moveable along a first direction to urge linear expansion of the gap, and one or more cams each coupled to the first slider. The one or more cams may be configured to urge angular expansion of the gap in response to at least one of: rotation of the one or more cams about a rotation axis, and motion of the one or more cams along the first direction.

An example method includes obtaining, by one or more processors, a target atlas of a particular patient on which an arthroplasty procedure is to be performed; selecting, by the one or more processors and based on a comparison of values of the target atlas and a plurality of reference atlases of other patients on which the arthroplasty procedure has been performed, at least one reference atlas of the plurality of reference atlases of the other patients; and determining, by the one or more processors and based on the selected at least one reference atlas, one or both of an implant size and an implant alignment for the particular patient.

The embodiments provide various interbody fusion spacers, or cages, for insertion between adjacent vertebrae. The cages may have integrated ratchet assemblies that allow the cage to change size and angle as needed, with little effort. The cages may have a first, insertion configuration characterized by a reduced size to facilitate insertion through a narrow access passage and into the intervertebral space. The cages may be inserted in a first, reduced size and then expanded to a second, larger size once implanted. In their second configuration, the cages are able to maintain the proper disc height and stabilize the spine by restoring sagittal balance and alignment. Additionally, the intervertebral cages are configured to be able to adjust the angle of lordosis, and can accommodate larger lordotic angles in their second, expanded configuration. Further, these cages may promote fusion to further enhance spine stability by immobilizing the adjacent vertebral bodies.

A sacroiliac fusion implant device assembly has an implant body and a pair of bone fasteners. The implant body has a distal end and a proximal end with a longitudinal axis extending between a center of the distal end and a center of the proximal end. The distal end has cutting edges configured to cut tissue as the implant is pressed into a joint between a sacrum and an ilium. The proximal end has two bone fastener receiving apertures, each configured to receive a bone fastener and the implant body has a pair of sidewalls connecting the distal and proximal ends. The pair of bone fasteners can be a pair of threaded fasteners, or a pair of spike fasteners or a combination of one threaded fastener and one spike fastener.

An assembly for preparing bone stock includes a shell (52) comprising a base (54) having a support surface (56), and a lid (58). The base and lid have a void space (60) therebetween. A carriage (62) is disposed at least partially within the void space, and moveable across the support surface. The carriage comprises a wall (64), at least a portion (65) of which is resiliently deformable. The wall cooperates with the base to define a preparation chamber (66), and a removal element (68) configured to remove soft tissue from the bone stock is disposed at least partially therein. The resilient portion of the wall is configured to deform when bone stock is positioned between the removal element and the wall. The carriage is configured to receive power from a drive train to actuate movement of the carriage across the support surface, and the removal element is also configured to receive power from the drive train.

An interbody spinal implant / fusion cage and implant inserter system for facilitating interbody fusion in the lumbar spine using bone graft while reducing the number of passes made through the patient's disc space and the sensitive surrounding tissue by integrating bone graft delivery into the inserter system. The system combines insertion of the interbody implant with bone graft delivery directly into the disc space. The system includes the interbody implant, an interbody cover plate, an implant inserter assembly, a cover plate inserter, a bone graft plunger and a bone graft funnel. The inserter assembly includes a large rectangular cannula which attaches to a large rectangular posterior opening in the interbody implant instead of a round cannula. The rectangular cannula approximates the shape of the annulotomy and provides a larger cross-sectional area for passage of a much larger quantity of bone graft material without jamming. Related methods and kits are also disclosed.

A spinal implant device is provided comprising a body structure with a central cavity and a movable lid configured to cover the central cavity. The movable lid is configured to be opened to pack a material in the central cavity. The movable lid can be connected to the body structure with a moveable joint. The spinal implant device can include a compressible feature. A method for treating the spine is provided comprising opening a movable lid of a spinal implant device, packing a material in a central cavity of a spinal implant device, closing the movable lid, and inserting the spinal implant device between vertebrae.

A method of manufacturing a medical device made of polylactic acid (PLA) and hydroxyapatite (HA) aimed at the repair of fractures or considerable bone injuries, using 3D printing and electrospinning techniques.

The invention discloses a self-adaptive bionic cancellous bone defect prosthesis and a design method thereof, and belongs to the technical field of medical prostheses, the prosthesis is composed of biological interface gradient microporous structure parts and a main body bionic truss supporting structure part, the biological interface gradient microporous structure parts are arranged at the two ends of the main body bionic truss supporting structure part, and the main body bionic truss supporting structure part is arranged on the main body bionic truss supporting structure part. The method is mainly used for reconstructing bone defects, bionically designing a truss part of a main body with consistent arrangement direction and form of human body bone trabecula through an established linear relation between CT gray value and bone density-elasticity modulus, adaptively matching mechanical conduction of a bone structure, reducing stress shielding effect, and improving bone defect reconstruction efficiency. Meanwhile, various complex mechanical working condition requirements of the prosthesis are met, the prosthesis failure risk is reduced, and the service life of the prosthesis is prolonged.

A thin-blade chisel system, for separating an outer surface of an orthopedic implant and an inner surface of a bone from each other, includes a thin-blade chisel having a blade tip at a distal end portion in a longitudinal direction, and a hammering direction changing tool engaged with the thin-blade chisel to apply a force in an advancing direction of the blade tip. The thin-blade chisel includes a hammering blow-receiving part, preferably a through hole penetrating in a thickness direction, at a predetermined position on a proximal side closer to the surgeon. The hammering direction changing tool includes a hammering portion to be hammered, located at a proximal end portion, and a recess formed at a distal end portion, to be engaged with an inner circumferential surface of the through hole.

A surgical instrument kit for spinal fusion. The instrument kit includes a curved trocar (10), a flexible cannula (30) for positioning over the curved trocar, a flexible rasp device (70), and a bone graft delivery container (90).

A kit of parts from which selection is made to form an intervertebral fusion device. The kit of parts comprises a plurality of different endplates and a core component. Each of the plurality of different endplates is configured to be received in an intervertebral space defined between first and second vertebrae. The core component is configured to engage with each of the plurality of endplates and a selected one of the plurality of endplates when the selected endplate and the core component are received in the intervertebral space. Each of the plurality of endplates defines a bone graft aperture which is open at top and bottom surfaces of the endplate and extends between the top and bottom surfaces, the thus defined bone graft apertures being of substantially the same dimensions as one another when the plurality of endplates are in plan view. The core component defines a bone graft material holding space having a holding space opening in one of a core component top surface and a core component bottom surface of the core component. The holding space opening is of substantially the same dimensions as each of the bone graft apertures when the core component is in plan view. The holding space opening is substantially coextensive with the bone graft aperture of the selected endplate in plan view and when the core component is engaged with and in registration with the selected endplate.

The invention discloses a bionic heterogeneous composite structure bone implant and a preparation method thereof, and relates to the technical field of medical implants.The bionic heterogeneous composite structure bone implant comprises an inner-layer cross-shaped structure, a middle-layer negative Poisson's ratio structure and an outer-layer honeycomb structure, and the cross-shaped structure, the negative Poisson's ratio structure and the honeycomb structure jointly form a bionic composite structure; and immersing the bionic composite structure subjected to double-network crosslinking into a drug-containing solution for post-treatment and drug loading to obtain the bionic heterogeneous composite structure. According to the invention, bionic adaptation and intelligent optimization of mechanical properties are realized, and the stress shielding problem is solved; according to the invention, osseointegration and vascularization processes are obviously accelerated and enhanced, and leap-type improvement of biological activity is realized; a novel intelligent treatment mode based on in-vivo microenvironment response is developed, and on-demand and accurate drug delivery is achieved.

The invention relates to an attachment (1), a method for manufacturing an attachment (1), and a method for selecting a suitable attachment (1) for at least partially covering a bone defect site, wherein the attachment (1), in order to at least partially cover a bone defect site, has an extension in a first direction x, in a direction y orthogonal thereto, and in a direction z orthogonal to x and y, and the attachment (1) and / or at least one stiffening element (3) attached to the attachment (1) consists at least in part of a material which exhibits a shape memory effect and / or such a strong restoring force that, after elastic deformation, it returns to its original state.

The utility model relates to the technical field of skull repairing, in particular to a splicable skull repairing system which comprises a first skull repairing piece, a second skull repairing piece and a plurality of connecting assemblies used for connecting the first skull repairing piece and the second skull repairing piece to the skull of the human body, and the first skull repairing piece and the second skull repairing piece are arranged in an up-down spaced mode. The first skull repairing piece comprises a plurality of first splicing strips which are arranged side by side in an abutting mode, the second skull repairing piece comprises a plurality of second splicing strips which are arranged side by side in an abutting mode, and the arrangement direction of the second splicing strips and the arrangement direction of the first splicing strips are staggered; a plurality of convex tongues are arranged on the second skull repairing sheet in an array mode, and a plurality of clamping grooves are formed in the first skull repairing sheet in an array mode; and the second skull repairing sheet is connected with the first skull repairing sheet through the clamping matching of the convex tongue and the clamping groove. The skull repair block has the advantages that the risk that the skull repair block collapses when bearing impact is reduced, the strength of the spliced skull repair block is improved, a patient is protected, the operation time is shortened, and the cost and the postoperative infection rate are reduced.

The invention relates to a preparation method and medical application of a porous tantalum material based on an extremely small curved surface structure. The porous tantalum material is particularly applied to medical implants such as an interbody fusion cage, an artificial vertebral body, a hip joint acetabular cup, a joint filling block and a dental implant. The material is pure tantalum or tantalum-containing alloy (such as tantalum-titanium, tantalum-niobium, tantalum-zirconium, tantalum-titanium-niobium-zirconium, and the tantalum content is greater than 1%), the material is constructed by adopting an additive manufacturing technology, the porosity is 30-90%, compared with a truss pore channel structure (such as a rhombic dodecahedron), no obvious stress concentration point exists, the strength, the modulus, the anti-fatigue performance and the like are remarkably improved, and the application prospect is wide. The method is particularly suitable for structural and functional reconstruction of large-area and load-bearing bone defects.

The present disclosure relates to computer-implemented methods (100) for generating a virtual model of a first section of bone tissue including cortical bone tissue. The method comprises (104) obtaining microstructural cortical parameters including an indication of a number of osteons (210) and of a cross-sectional area of the osteons, a number of lamellae (212) forming the osteons, an indication of locations of osteons in the section of bone tissue and of dominance of the osteons. The method further comprises generating a virtual model using a generative design algorithm comprising (1061) defining a geometric space, (1062) generating a cortical cloud of points, (1064) segmenting the geometric space into substantially circular regions, defining an outer surface of the osteons. The method further comprises (1065) forming consecutive substantially concentric surfaces corresponding to the lamellae until the obtained virtual model satisfies boundary conditions formed by the microstructural cortical parameters.

A titanium-zinc mixed structure type degradable jaw bone restoration comprises a titanium alloy force bearing part and a zinc alloy planting part which are printed in a 3D mode, and the titanium alloy force bearing part and the zinc alloy planting part are connected through a connecting part located on the titanium alloy force bearing part and / or the zinc alloy planting part. The titanium alloy part serving as the base is mainly used for bearing force, it is guaranteed that the prosthesis cannot be broken in the using process, the zinc alloy of the upper half part is absorbed in the osteogenesis regulating and controlling process, then bony repair is completed, and planting can be conducted. And the height of the preferable zinc alloy planting part is enough for planting, and meanwhile, the titanium alloy at the lower half part does not influence final planting and can ensure the overall stability.

The invention provides an integrated splicable porous mandibular implant prosthesis, which comprises a left prosthesis module, a right prosthesis module, a splicing connection part and a porous structure part, and is characterized in that the left prosthesis module and the right prosthesis module are detachably connected through the splicing connection part to form an integral structure; porous structure parts are arranged in the middle main body areas of the left prosthesis module and the right prosthesis module respectively, a plurality of double-end guide holes are evenly formed in the porous structure parts, and each double-end guide hole forms an independent hole opening in the front surface and the rear surface of the corresponding prosthesis module. The front hole opening and the rear hole opening are communicated with each other through communicating hole channels formed in the porous structure part; the splicing connecting part comprises an insertion tenon part arranged on the left prosthesis module and a mortise groove part arranged on the right prosthesis module; the splicing connecting part is provided with a limiting clamping structure; the left prosthesis module and the right prosthesis module are respectively provided with a plurality of fixing holes. During use, rapid assembly of the prosthesis modules is facilitated, and growth of bone tissue is facilitated.

In some embodiments, an implant configured to span a joint between a first bone and a second bone may include a proximal end configured to reside in the first bone, a distal end including threads configured to reside in the second bone distal to the first bone in response to rotation of the implant about an axis of rotation, an axis extending between the proximal end and the distal end, and an exterior surface extending from the proximal end to the distal end. The exterior surface may include a first recess formed therein. The first recess may include an undercut such that the first recess has a first perimeter at an exterior of the first recess, and a second perimeter, greater than the first perimeter, at an interior of the first recess, wherein the interior is closer to the axis than the exterior.

Systems and methods for providing an interbody implant are disclosed. According to some implementations, the implant includes an implant body having a cranial face and a caudal face disposed opposite the cranial face. In some implementations, the implant includes one or more primary fixation mechanisms, which in turn can include one or more anchor cavities defined by the implant body. In some cases, one or more anchors are configured to be housed at least partially within the anchor cavities in an undeployed position, and the anchors are configured to be translationally deployed to a deployed position in order to couple the implant to a bony endplate of a spinal vertebra. In some implementations, the implant includes one or more actuators configured to effectuate selective deployment of the anchors.

The invention discloses a magnetoelectric stent for realizing bone repair under external field driving and a preparation method and application thereof.The stent comprises a stent body based on a triple-period minimal curved surface structure and a magnetoelectric nano-particle coating, and the stent body comprises a convoluted and / or through hole structure; and the magnetoelectric nanoparticle coating is loaded on the inner surface of at least part of the pore structure. The magnetoelectric stent is suitable for providing better mechanical support for the early stage of bone repair of large-area bone defects, meanwhile, under the synergistic effect of magnetoelectric stimulation, osteogenesis and angiogenesis coupling can be promoted, and bone defect repair under the complex conditions of oral clinical alveolar bone vertical bone increment and systemic diseases such as inflammation and the like is achieved.