329 results about "Bone surface" patented technology

Systems and methods for calculating external bone loss for alignment of pre-diseased joints comprising: generating a three-dimensional (“3D”) computer model of an operative area from at least two two-dimensional (“2D”) radiographic images, wherein at least a first radiographic image is captured at a first position, and wherein at least a second radiographic image is captured at a second position, and wherein the first position is different than the second position; identifying an area of bone loss on the 3D computer model; and applying a surface adjustment algorithm to calculate an external missing bone surface fitting the area of bone loss.

A suture button system for fixing a syndesmotic injury comprises a flexible fixation implant and an inserter device used to deploy the implant across bones. The flexible fixation implant typically comprises a flexible connector and two suture buttons which interface with the bone surface or a bone plate or washer. The flexible connector comprises a plurality of suture strands. The buttons typically have a feature which allows them to interface with an instrument used to deploy the implant across the two bones. The inserter device is configured to interface with the flexible fixation implant and to position it across bones through a pre-drilled bone tunnel. The inserter device may comprise an cannulated insertion rod and a handle.

The invention discloses a real-time pose updating method based on feature prediction and point cloud registration, and belongs to the technical field of image registration, and the method comprises the steps: extracting a bone surface point cloud which at least covers a feature region and an adjacent region from a three-dimensional model of a bone tissue of a patient, the point cloud is used as a target point cloud for registration with a real-time ultrasonic image; an ultrasonic image collected by the ultrasonic patch in real time is obtained, and a two-dimensional ultrasonic image with a spatial position is obtained; predicting the two-dimensional ultrasonic image by using a pre-trained artificial intelligence model to obtain bone-soft tissue interface features, and extracting a plurality of points on a bone-soft tissue interface from the bone-soft tissue interface to form a source point cloud for registration; and registering the source point cloud to the target point cloud to realize real-time pose updating. According to the invention, the pose monitoring in the operation can be realized through the real-time image flow under the non-invasive condition.

An orthopedic instrument system that includes a burr and a burr guide. The burr guide includes an elongated opening, in which at least a portion of the elongated opening includes a substantially circular opening having a greater dimension than that of the adjacent portion of the elongated opening. The circular opening is configured to receive at least a portion of the burr therein and therethrough such that the burr may be manipulated along the length of the elongated opening. The burr has a shaft and a first end opposite a second end with the first end being configured to facilitate being releasably coupled to a tool. The second end of the burr has an engagement feature that is configured to cut and / or resurface a bone surface. A method of using the orthopedic instrument system is also disclosed herein.

The invention relates to an alveolar bone surface tooth root detection method and detector, and the method comprises the following steps: obtaining age data and bone density data of a testee according to CT data and imaging data of the testee, and matching corresponding ultrasonic parameters and acoustic impedance correction parameters; constructing a multi-layer medium acoustic impedance model comprising a tooth root layer of the bone surface of the alveolar bone; configuring transmitted ultrasonic waves based on the ultrasonic wave parameters; receiving an echo signal corresponding to the transmitted ultrasonic wave, and performing adaptive correction on parameters of each layer in the multilayer medium acoustic impedance model based on the acoustic impedance correction parameters by taking minimization of the difference between the echo signal and a theoretical reflection signal obtained by the multilayer medium acoustic impedance model as a target; and based on the multi-layer medium acoustic impedance model after self-adaptive correction, realizing detection of the tooth root on the bone surface of the alveolar bone. Compared with the prior art, the method has the advantages of accurate detection of the tooth root on the bone surface of the alveolar bone, high adaptability and the like.

The invention relates to the technical field of surgery for correcting abnormal femoral neck forward inclination angle, and discloses an assist device for correcting abnormal femoral neck forward inclination angle and a using method thereof.The assist device comprises two handles arranged in parallel, and arc-shaped jaws are fixedly installed at the tail ends of the front end heads; the pressing rod is adjustably mounted at the end of the handle; wherein an arc-shaped bottom plate is fixedly mounted on the outer wall of one arc-shaped plier mouth, and the other arc-shaped plier mouth is rotationally mounted on the arc-shaped bottom plate. According to the assist device for correcting the abnormal femoral neck anteversion angle, through cooperation of the two sets of arc-shaped clamp mouths and the pressing rods, the two sides of a femoral truncation position can be rapidly and stably clamped in an operation, the angle of the truncation femoral can be conveniently adjusted, the truncation femoral can also be held, and after the truncation femoral is rotated to the target angle, the femoral neck anteversion angle can be accurately corrected. The bone fracture plate can be perfectly attached to the bone surface, pressurization and healing of the broken end of the bone are facilitated, and then the postoperative recovery effect is improved.

An anti-skive bone drill assembly is provided, and may be used for spinal surgical procedures. The anti-skive assembly can include a sheath, a drill bit disposed within the sheath, and a mechanism for maneuvering the drill bit within the sheath. The anti-skive assembly, and particularly the sheath, may be mounted in a surgical robot. The anti-skive assembly may be used to side cut a bone to create a flattened surface in an otherwise non-perpendicular bone surface.

The present application relates to a zinc suture button. The material of the zinc suture button comprises at least one of Mn, Mg, Li, Ti, Cu, Ca, Sr, Fe, Ag, Co, Cr, Ce, Zr, Ge and Sn, and, on the basis of weight percentages, comprises 0.01wt.%-10wt.% of Mn, 0.01wt.%-8.5wt.% of Mg, 0.1wt.%-1.5wt.% of Li, 0.01wt.%-5wt.% of Ti, 0.1wt.%-2.75wt.% of Cu, 0.01wt.%-5wt.% of Ca, 0.01wt.%-5wt.% of Sr, 0.01wt.%-5wt.% of Fe, 0.01wt.%-10wt.% of Ag, 0.01wt.%-5wt.% of Co, 0.01wt.%-5wt.% of Cr, 0.01wt.%-10wt.% of Ce, 0.01wt.%-5wt.% of Zr, 0.01wt.%-5wt.% of Ge and 0.01wt.%-5wt.% of Sn, with the balance being Zn. The material of the zinc suture button has an elongation rate of greater than or equal to 20%, a yield strength of greater than or equal to 250 MPa, and a tensile strength of greater than or equal to 300 MPa. The zinc suture button is made of a medical degradable zinc alloy material. The zinc suture button comprises a first surface and a second surface, the first surface being used for being attached to a bone surface, and the degradation rate of the first surface being greater than that of the second surface.

A bone cutting device, such as a burr or saw blade, is irrigated to cool not only the bone cutting device itself, but also the bone of the subject on which a bone resection procedure is being performed. The bone cutting device can have one or more (e.g., a plurality of) internal flow channels that eject a cooling medium (e.g., water or an inert gas) from the bone cutting device. This emission of the cooling medium can not only flush bone chips from the resection site, thereby reducing frictional heating of the bone cutting device, but can also provide internal cooling to the bone cutting device while flowing through the one or more internal flow channels and also can cool the surface of the bone via conductive heat transfer (e.g., by the flow stream of the cooling medium impinging on the bone surface).

A computer-implemented method of determining fixation of a prosthesis in bone matter based on bone anatomy and density information comprises generating a three-dimensional model of a bone of a patient for output in a video display unit, adding three-dimensional bone density information for the bone matter to the three-dimensional model, simulating a. preparation of the bone to produce a bone surface on the three-dimensional model, simulating placement of the prosthesis in the bone surface, estimating a fixation strength of the prosthesis to the bone matter using the bone density information at the prosthesis, and outputting indicia on the video display unit that indicates risk factors for displacement, of the prosthesis from the bone matter.

The invention relates to the technical field of three-dimensional shape modeling and reconstruction, and discloses a bone surface bidirectional three-dimensional reconstruction and editing method and device, computer equipment and a medium, the method comprises the following steps: obtaining a plurality of multi-modal facial skull three-dimensional data, and obtaining a three-dimensional facial grid and a three-dimensional skull grid based on the multi-modal facial skull three-dimensional data, then, a dense ray matching technology of face-skull topological consistent registration is adopted to obtain a dense control point corresponding relation and a topological consistent face grid; based on a preset face-skull structure mapping relation, mapping the face grid and the three-dimensional skull grid which are topologically consistent, and establishing a dense tissue thickness vector field; on the basis of the dense control points and the dense tissue thickness vector field, a bone surface-tissue joint deformable model is constructed to conduct bone surface bidirectional three-dimensional reconstruction, finally bone surface bidirectional three-dimensional editing is conducted on the basis of a bone surface bidirectional three-dimensional reconstruction result, and the precision and individuation level of three-dimensional bone surface reconstruction are remarkably improved.

The phalanx hook bone fracture plate comprises a strip-shaped main plate body, an anatomical concave panel attached to the bone surface is formed at the head of the strip-shaped main plate body, two hook bodies are formed at the end, away from the strip-shaped main plate body, of the anatomical concave panel side by side, and the two hook bodies hold the free fracture end; the strip-shaped main plate body is provided with two hook bodies, an interval space is formed between the two hook bodies, a containing space is formed among the hook bodies, the anatomical concave panel and the strip-shaped main plate body, a wedge-shaped plate is formed at the tail of the strip-shaped main plate body, and a plurality of screw holes are formed in the strip-shaped main plate body in the extending direction of the strip-shaped main plate body. According to the technical scheme, the anatomical concave surface of the anatomical concave panel is more attached to the bone surface, and the effect is better; the hook body can hook a free fracture end to prevent dissociation, so that the treatment is more stable, and the effect is better; the wedge-shaped plate is convenient to implant; the pressurization screw hole facilitates pressurization, so that the broken bone surface is more tightly attached.

The utility model relates to bone hook coordinate mapping positioning equipment suitable for spinal surgery, which comprises a bearing rod, the bearing rod is connected with an adjusting rod through an adjusting shaft, a plurality of guide devices are arranged on the outer side of the bearing rod and the outer side of the adjusting rod, each guide device comprises a guide seat, and a bone power cutting groove is formed in the outer side of each guide seat. A bone hook groove is formed in the guide seat, and a plurality of bone hook assemblies are arranged in the bone hook groove through mapping assemblies. Therefore, the angles of the bearing rod and the adjusting rod can be properly adjusted, the physiological curve of the back of the human body can be fitted, and subsequent positioning errors are avoided. The angle of the guiding device can be adjusted, and a proper angle can be provided according to the mapping requirement. The guiding device can achieve stable positioning of the orthopedic power depth limiter installed subsequently, and sliding is avoided. The bone hook assembly can achieve accurate mapping of bone surface contact point coordinates, and the operation precision is improved.

A distractor system for use in a joint between two bone surfaces of an anatomical structure includes, for example, distractor and at least one detachable tool comprising a body having a proximal portion and a distal portion, said proximal portion being releasably attachable to at least one of a first end of the distractor and / or a second end of the distractor. The distal portion of the detachable tool being operably positionable in the joint between the two bone surfaces of the anatomical structure. The detachable tools may include a detachable paddle.

The invention belongs to the technical field of traditional Chinese medicines, and particularly relates to a composition for improving osteothione as well as a preparation method and application thereof. The invention provides a composition for improving osteothione, which is prepared from the following components in parts by mass: 500 to 600 parts of folium cortex eucommiae, 300 to 350 parts of male flower of cortex eucommiae, 300 to 350 parts of wine-processed rhizoma polygonati, 300 to 350 parts of radix fici simplicissimae, 200 to 250 parts of maca, 90 to 120 parts of natto, 60 to 80 parts of calcined oyster shell and 0.5 to 1 part of ossein. The composition can increase the number of bone trabecula, increase bone density, bone volume fraction, the number of bone trabecula, bone trabecula thickness and bone surface area-to-tissue volume ratio, lower bone surface area-to-bone volume ratio and bone trabecula separation degree, enhance osteoblast activity, inhibit osteoclast maturation and differentiation and relieve inflammation, and is high in safety performance. In conclusion, the composition provided by the invention has a certain improvement effect on osteoporosis.

The disclosed subject matter relates to a system and method for preparing a surface of a bone proximate a joint, in which the preparation includes boring a plurality of arced channels / troughs in the bone surface using an arch drill assembly guided by plural guide bores along a predetermined longitudinal arc. The bored troughs create a scalloped surface on the bone to which an inverse contoured joint insert / implant having cooperating convex ridges engages. The plural guide bores are also defined by the predetermined longitudinal arc which may be circular or helical. The disclosed subject matter minimizes bone removal and allows greater access options for preparing the bone surface.

A surgical guide includes a metal guide and a plastic reference formed by additive manufacturing. The metal guide is configured to engage a bone surface of a first body area. The metal guide includes a main plate and an arm. The main plate has an inner surface customized and shaped to the bone surface. The main plate defines mounting guides for securing the main plate to the bone surface and defines a machining guide for drilling or cutting through the bone surface. The arm is formed to the main plate at a proximal end and extends to a distal end. The plastic reference has a reference surface customized and shaped to a surface of a second body area that is physically separated from the first body area.

A bone plate includes a plate body defining an interior surface that defines a combination hole that includes intersecting locking and compression holes that each extend between outer and bone-facing surfaces of the plate body. A central axis of the compression hole is spaced from a central axis of the locking hole in an offset direction. A locking surface of the plate body defines the locking hole and at least one locking structure therein. A compression surface of the plate body defines the compression hole. An intersection boundary between the locking and compression surfaces is configured to translate the bone plate in the offset direction during contact between the intersection boundary and a head of a compression screw as it advances within the combination hole along an insertion axis offset from the central axis of the locking hole at an offset distance in a direction having a directional component in the offset direction.

The invention relates to the technical field of biological processing, in particular to a production process and application of bovine bone collagen peptide for preventing osteoporosis and delaying cell senescence, and the production process comprises the following steps: placing yak bone into a bone placing cylinder, and plugging a rubber plug; a first motor and a second motor are started to drive a shifting block and a pushing block to quickly move from one end of a bone placing cylinder to the other end of the bone placing cylinder in a reciprocating manner, so that a plurality of bone striking groups inserted outside the bone placing cylinder are triggered to be compressed, rebounded and released, yak bones in the bone placing cylinder are struck, and concave holes and cracks are formed in the bone surface; and then the servo motor is started to drive the bone unloading belt to unload the yak bones, and the yak bones fall into the bone crushing machine body to be crushed. The spring steel conical head is driven by the cambered surface and planar force storage group to pre-split yak bones, directional impact on the surfaces of the yak bones is completed, continuous compression and release are achieved by linkage of the two-way lead screw and the shifting block and the pushing block, full-circumferential dead-corner-free impact on the yak bones is completed, the effect of increasing the crack coverage rate is achieved, the extrusion force of a subsequent bone crusher is reduced, and the production efficiency is improved. The service life of the double-tooth roller is prolonged.

The invention discloses an artificial cochlea implantation automatic path planning method based on multi-objective optimization, and relates to the technical field of medicine, and the method comprises the steps: S1, key structure segmentation; s2, generating a candidate path; s3, performing path evaluation; and S4, solving an optimization problem: solving a multi-objective optimization problem by using a genetic algorithm, defining a fitness function and integrating a plurality of objectives, the optimization objectives including minimizing path length, minimizing deviation with an ideal bone surface angle, minimizing bone grinding distance and maximizing the shortest distance with a key structure. According to the artificial cochlea implantation automatic path planning method based on multi-objective optimization, a key anatomical structure is segmented through deep learning, a candidate path set from mastoid to a niche is generated, a multi-objective optimization problem is solved by using a genetic algorithm, and an optimal path meeting clinical constraints is selected. When the method is applied to preoperative planning of an artificial cochlea implantation operation, the safety and accuracy of the operation can be remarkably improved.

The embodiment of the invention is suitable for the technical field of computer-aided medical treatment, and provides a spinal surgery screw placement path planning method and device and a computer program product, and the method comprises the steps: obtaining a spinal image, and determining a spinal central axis based on the spinal image; determining a nail placement stop point according to the central axis of the spine; based on the screw placement stop points, a screw placement point candidate set is determined, and the screw placement point candidate set comprises a plurality of candidate screw placement points located on the spine transverse process; a candidate screw placement path formed by any candidate screw placement entry point and the screw placement stop point is determined; respectively calculating the distance from each bone surface edge point of the spine bone surface to each candidate screw placement path, and determining a screw placement point from the plurality of candidate screw placement points according to the distances; and planning a nail placement path based on the nail placement entry point and the nail placement stop point. By applying the method, the screw placement path of the spinal surgery can be automatically planned, and the accuracy and efficiency of screw placement path planning are improved.

A bone joint spacer has two endplates which have a bone engaging surface on one side, and ramps extending from an opposite side. A shaft has a threaded end, and another end which has ramp followers which mate with the endplate ramps of both endplates. A collar slides over the threaded end of the shaft, and also has ramp followers which mate with the endplate ramps of both endplates. A nut threads onto the end of the shaft and pushes the collar towards the ramp followers of the shaft. This movement causes the ramp followers to slide the ramp followers of the collar and the shaft against the endplate ramps, pushing the endplates apart. Two of these spacers can be combined by a link plate so that the spacers can be aligned or curved into a U-shape to be inserted into the body and positioned between bony surfaces, respectively.

The invention provides a registration probe and a registration method, the registration probe comprises a probe main body and a rotating wheel, the probe main body comprises a probe main body near end and a probe main body far end which are fixedly connected, and the probe main body near end is provided with an optical indication point; the far end of the probe main body is connected with the rotating wheel, the rotating wheel is provided with a connecting part, the connecting part is rotatably connected with the far end of the probe main body, and the edge of the rotating wheel is provided with a cutting edge. According to the registration probe and the registration method, the structure of the rotating wheel capable of rolling along the bone surface of the target bone is adopted, continuous and automatic point taking is achieved, the point taking efficiency and precision are improved, the probability of obtaining the feature points in the feature area is improved, the success rate and precision of registration are improved, and the registration accuracy is improved. And meanwhile, the requirements on experience and quantity of operators are also reduced.

The invention relates to an artificial periosteum suitable for a complex bone surface. The artificial periosteum is an integrated single-layer membrane. The artificial periosteum is provided with an anti-adhesion area, a directional pore channel structure area and a bone contact area which are sequentially distributed in the thickness direction. The directional pore channels are sequentially filled with composite hydrogel for filling bone surface pores and promoting bone repair and bonding gel for bonding bone surfaces in the extending direction of the directional pore channels; an expanding agent and prestretching memory polymer fibers are dispersed in a matrix of the artificial periosteum; the expanding agent is enriched in the matrix of the directional pore channel structure area and the bone contact area and is used for driving the composite hydrogel to leave the directional pore channel so as to seal bone surface gaps or cracks; and the pre-stretched memory polymer fibers are enriched in the matrix of the anti-adhesion area and are used for limiting the expansion direction of the expanding agent. The artificial periosteum can solve the technical problems that in the prior art, the attaching effect of the artificial periosteum on the complex bone surface is poor, and the long-term reliability is poor.

The disclosure includes devices for assisting in performing an ankle arthroplasty on a non-resected bone surface of a tibia and / or a talus. The devices may include patient-specific mating surfaces configured to engage the non-resected bone surface in a single relative position relative to the non-resected bone surface. The patient specific nature of the mating surface portion may be generated in the devices prior to the devices being brought into contact with the bone. The devices may include various cutting guides and holes for receiving fasteners to fasten the devices to the bone. The devices may include various features to enhance the stability and / or surface area contact between the devices and the bones.

A suture button system for fixing a syndesmotic injury comprises a flexible fixation implant and an inserter device used to deploy the implant across bones. The flexible fixation implant typically comprises a flexible connector and two suture buttons which interface with the bone surface or a bone plate or washer. The flexible connector comprises a plurality of suture strands. The buttons typically have a feature which allows them to interface with an instrument used to deploy the implant across the two bones. The inserter device is configured to interface with the flexible fixation implant and to position it across bones through a pre-drilled bone tunnel. The inserter device may comprise an cannulated insertion rod and a handle.

The present application relates to the field of oral medicine, and provides a bone trimmer, comprising: a main body, on which is provided an interface for an externally connected rotating power device; a bone trimming ring, which is sleeved on an end portion of one side of the main body to rotate coaxially with the main body, and the bone trimming ring is used to trim the bone surface; and a guide rod, which is coaxially arranged relative to the bone trimming ring and is used to guide and position the bone trimming ring. The bone trimmer provided by the embodiments of the present application has better safety and reliability.

An apparatus includes a fixation portion configured to be affixed to a bone surface within a recipient's body. The apparatus further includes a mounting portion connected to the fixation portion, the mounting portion configured to hold a component within the recipient's body. The mounting portion includes a collar configured to extend at least partially around the component and a reservoir configured to receive an adhesive material within a predetermined volume at least partially bounded by an inner surface of the collar and an outer surface of the component.

The utility model relates to the technical field of medical instruments, in particular to a multi-scene use bone hammer which comprises a handle rod, a bone hammer column head arranged at one end of the handle rod, a first bone hammer head arranged at one end of the bone hammer column head and a second bone hammer head arranged at the other end of the bone hammer column head. And the second bone hammer head is a plastic bone hammer head. In a knee joint replacement operation, an original bone surface needs to be cut off, a bone hammer and a bone knife are used in cooperation, at the moment, a first bone hammer head (namely a metal bone hammer head) needs to be used for knocking the tail of the bone knife, bone cutting is achieved, and after the bone is cut off, a metal joint is fixed to the surface of the joint after the bone is cut off; the second bone hammer head (namely the plastic bone hammer head) is used for knocking a metal joint, fixation and replacement of the joint are achieved, the applicability of the bone hammer is improved, and the multi-scene use requirements of the bone hammer are met.

Systems and methods for bone surface geometry generation include a computing device. The computing device projects first geometry data indicative of a first bone contact surface of a first bone of a patient to a coordinate space of a second bone of the patient to generate a projected geometry. The second bone includes a second bone contact surface engaged with the first bone contact surface. The computing device also maps the projected geometry to a plurality of poses within a range of motion of the first bone relative to the second bone using position data indicative of relative positions of the first bone and the second bone at the plurality of poses within the range of motion. The computing device also selects an intersecting geometry from the mapped projected geometries to generate second geometry data indicative of a second bone contact surface.