149 results about "Osteon structure" patented technology

An interbody spinal implant, such as a solid-body or composite implant. The implant has at least one integration surface with a roughened surface topography including a repeating pattern, without sharp teeth that risk damage to bone structures, adapted to grip bone through friction generated when the implant is placed between two vertebral endplates and to inhibit migration of the implant. The repeating pattern is formed of at least three at least partially overlapping repeating patterns. The repeating patterns may radiate at a fixed distance from at least one point and may include recesses having a slope of thirty degrees or less relative to the integration surface. Also disclosed are processes of fabricating the integration surfaces.

The present invention provides a technique for automatically generating bone shielding (82) in CTA angiography. This technique can preprocess the image data set (70) to perform various functions, such as removing (90) the image data associated with the table top, cutting (92) the volume into regionally consistent sub-volumes, calculating according to the gradient ( 110) Structure edges, and / or computing (112) seed points for subsequent region growing. The preprocessed data can then be automatically segmented for bone and vascular structures (78). This automatic vessel segmentation (118) can be accomplished using suppression region growing, where the suppression is dynamically updated according to the local statistics of the image data. The vasculature (78) may be subtracted (80) from the bone structure (76) to generate a bone shield (82). The bone mask (82) may in turn be subtracted (84) from the image dataset (70) to generate a boneless CTA volume (86) for volume-rendered reconstruction.

Methods and devices are disclosed for remodeling the tongue. One or more spaces or cavities are formed in the tongue using, for example, surgical or RF ablative techniques. The cavities can be closed or collapsed by inserting a tethered soft tissue anchor into the tongue and attaching the tethered portion of the soft tissue anchor to a bony structure such as the mandible or hyoid bone in order to exert a collapsing force on the one or more spaces or cavities. The insertion pathway of the tethered soft tissue anchor may pass adjacent to or even through one or more cavities. Also disclosed herein is a tongue remodeling system that includes means for creating a space in the tongue, and a tissue anchor configured to close the space. The tissue anchor may be tethered or expandable.

The present invention relates to a surgical kit, a saw guide and other related tools used in the osteotomy for temporary removal of a piece of a first bone structure to gain temporary access for treatment of defects of a second bone structure, as well as methods for designing and manufacturing said tools

A composite interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, and opposing anterior and posterior portions; a first integration plate affixed to the top surface of the body; and an optional second integration plate affixed to the bottom surface of the body. At least a portion of the first integration plate, optional second integration plate, or both has a roughened surface topography including macro features, micro features, and nano features, without sharp teeth that risk damage to bone structures, adapted to grip bone through friction, inhibit migration of the implant, and promote bone growth. Also disclosed are processes of fabricating a roughened surface topography, which may include separate and sequential macro processing, micro processing, and nano processing steps.

An interbody spinal implant including a body having a top surface, a bottom surface, opposing lateral sides, and opposing anterior and posterior portions. At least a portion of the top surface, the bottom surface, or both surfaces has a roughened surface topography including both micro features and nano features, without sharp teeth that risk damage to bone structures, adapted to grip bone through friction generated when the implant is placed between two vertebrae and to inhibit migration of the implant. The roughened surface topography typically further includes macro features and the macro features, micro features, and nano features overlap. Also disclosed are methods of using such implants and processes of fabricating a roughened surface topography on a surface of an implant. The process includes separate and sequential macro processing, micro processing, and nano processing steps.

A fenestrated bone screw and method of use is disclosed in which a bone cement injection tube may be readily and sealably connected to the head of the bone screw by means of a bayonet connector so that bone cement from a cement pump may be forced into a cannula of the bone screw and into the bone structure proximate the fenestrations of the bone screw. Upon completion of the injection of the bone cement, the cement tube may be readily disconnected from the bone screw in such manner that leakage of bone cement is minimized. A surgical method of injecting bone cement into bone structure using such a cannulated, fenestrated bone screw is also disclosed.

The invention discloses a micro / nano-fiber bone repairing scaffold. The scaffold is obtained by adding composite particles to degradable polymers of engineering scaffolds for bone repair and producing micro / nano-fibers. The composite particles are provided with a core-shell structure, the core is a polymer particle prepared by high polymer materials or a bionic active microsphere similar to a bone structure in a micro-scale, the shell is medical biodegradable inorganic salt, and the bionic active microsphere similar to the bone structure in the micro-scale is composed of high polymer materials and inorganic salt. The micro / nano-fiber bone repairing scaffold has high activity and is capable of better absorbing and inducing cells to grow; the medical biodegradable water insoluble inorganic salt shell can protect collagen, growth factors and / or medicine in the composite particles, and repair of bone tissue is facilitated due to the bionic active microsphere similar to the bone structure in the micro-scale with an inorganic-organic intercalated structure and a human body simulation structure.

A dental device and / or process include at least one scaled and shaped linking component (26) to be supported by a dental model (28) or an imaging template (40). The process includes scaling, aligning, and orienting data (50, 56) from different data acquisition sources (44, 48, 54) with the scaled and shaped linking component (26), and combining the data (50, 56) from different data acquisition sources into a master data file (52). A method of making a diagnostic model (62) can include virtually designing an imaging template (36) including at least one linking component (26) made at least partially of a radio opaque material, and three-dimensionally printing the virtually designed template (40).; The diagnostic model (62) can include at least one of an exposed bone structure portion (70a, 76a), a removable gum tissue portion (72, 76b), a removable bone structure portion (76c), a visualization portion illustrating a root (76d), bone density (76f), an internal bone structure (76g), a nerve channel (76h), a nerve ending (76i), a sinus cavity (76j), a blood vessel (76k), an artery (761), and diagnostic teeth (76r).

The invention provides methods and compositions for differentiating stromal cells from adipose tissue into cells having osteoblastic properties, and methods for improving a subject's bone structure. The methods comprise culturing stromal cells from adipose tissue in β-glycerophosphate and ascorbic acid and / or ascorbate-2-phosphate for a time sufficient to allow differentiation of said cells into osteoblasts. Such methods and compositions are useful in the production of osteoblasts for autologous transplantation into bone at a surgical site or injury. The compositions comprise adipose stromal cells, a medium capable of supporting the growth of fibroblasts and amounts of β-glycerophosphate and ascorbic acid and / or ascorbic-2 phosphate sufficient to induce the differentiation of said stromal cells into osteoblasts. The invention further provides methods of identifying compounds that affect osteoblast differentiation. Such compounds are useful in the study of bone development and in the treatment of bone disorders, including bone fractures and osteoporosis.

A method for verifying the position of at least two bone structures relative to each other, comprising the method steps of: recording a three-dimensional dataset which represents the bone structures; segmenting the three-dimensional dataset into segments, wherein each segment represents a bone structure and the segments exhibit a known relative position in the three-dimensional dataset; changing the virtual relative position of the segments, such that the virtual relative position of the segments matches the actual relative position of the bone structures; and verifying whether the virtual relative position of the segments matches a target position of the bone structures.

The present invention relates to a system for internal fixation of bone fragments (4a, 4b) in a fracture (3) or of bones in a bone structure, which system comprises a plate (1) and at least two fixing elements (2) which can be screwed into the plate. With the object of providing a fixation system which affords largely unlimited freedom of choice as to where fixing elements may be screwed into the plate, the plate (1) is adapted to being applied abutting against bone fragments (4a, 4b) in the fracture (3) or against bones in the bone structure and is made of a material which can be shaped to the bone fragments or bones against which the plate is intended to abut. The material of the plate (1) is UHMWPE (ultra high molecular weight polyethylene) with an elasticity which makes it possible to screw fixing elements in the form of screws (2) in at any desired locations in the plate in such a way that the screws are locked in the plate by friction with respect to movements in axial, rotary and angular directions. Screwing the screws (2) into bone fragments (4a, 4b) in the fracture (3) or into bones in the bone structure results in fixation of said bone fragments or bones.

A computer-implemented bone-implant system evaluation method for application of mesh-free analysis of a bone-implant system for evaluation of performance of a bone-implant system for an implant implanted within the bone structure at an anatomical site, said method comprising (i) receiving a set of bone structure data set, wherein set of bone structure data includes data indicative of the bone structure at an anatomical site; (ii) inputting an implant data set and inputting the position of the implant data set, wherein the implant is selected based upon the biomechanical requirements for the anatomical site and the position and of the implant data set is indicative of the position of the implant with respect to the anatomical site, wherein implant data set includes data representative of the geometry and materials properties of the implant; (iii) creating a bone-implant model, wherein said bone implant-model includes a mesh-free model of trabecular bone at the anatomical site wherein the bone-implant model is formed from the bone structure data set from step (i) and the implant data set from step (ii), and wherein the mesh-free model of trabecular bone is indicative of the trabecular bone structure of the bone structure at the anatomical site; and (iv) determining a biomechanical result based upon computer simulated loading of the bone-implant system based upon mesh-free analysis of the bone-implant model, wherein the biomechanical result includes data based on the displacement of the implant relative to the bone of bone-implant model.

The present invention provides a method and system for creating a customizable dental chart. The methods utilize independently modifiable representations of oral structures including teeth, soft and / or bony structures, wherein each of the representations of oral structures comprises a base structure and one or more attributes which optionally comprise one or more properties. The one or more attributes may be independently activated and the one or more properties of the attributes may be independently activated to form a representation of said patient's oral / dental cavity.

A spinal implant having a top surface, a bottom surface, opposing lateral sides, and opposing anterior and posterior portions. At least one of the top surface and bottom surface has a roughened surface topography, without sharp teeth that risk damage to bone structures, adapted to grip bone through friction generated when the implant is placed between two vertebrae and to inhibit migration of the implant. At least one of the top surface and the bottom surface also includes at least one self-deploying anchor having an expulsion tab and a bone-engaging tip that causes the implant to resist expulsion once the expulsion tab is deployed.

A continuous compression fixation device for coupling a first bony structure to a second bony structure, including: a body structure; and a plurality of arm structures extending from the body structure, wherein at least one of the plurality of arm structures is configured to be coupled to the first bony structure and at least one opposed one of the plurality of arm structures is configured to be coupled to the second bony structure; wherein the body structure and the plurality of arm structures are manufactured from a shape memory material; and wherein tips of the at least one of the plurality of arm structures and the at least one opposed one of the plurality of arm structures are biased towards one another such that a desired compressive force is applied to an intercalary structural augment disposed between the first bony structure and the second bony structure.