209 results about "Bone surface" patented technology

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 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.

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.

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 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.

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.

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 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.

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.

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.

The invention discloses a cheekbone and zygomatic arch fracture reduction guide plate, and relates to the technical field of cheekbone and zygomatic arch reduction, the cheekbone and zygomatic arch fracture reduction guide plate comprises a guide plate body and a fixing structure, the guide plate body is provided with an attaching inner surface matched with the anatomical form of an affected side cheekbone and zygomatic arch bone surface in a target reduction form; the fixing structure is arranged on the guide plate body and used for fixing the guide plate body to the healthy bone surface around the zygomatic arch of the diseased side cheekbone, the problems that in the prior art, operation trauma is large, accuracy is low, the reduction effect is not ideal and the like are solved, and the zygomatic arch fracture reduction fixing operation is completed accurately, safely and efficiently.

The present invention relates to a surgical spacer device (100) for a joint, comprising a substantially cylindrical or truncated-cone-shaped main body (101), internally hollow and configured for insertion in a distracted joint (1, 2); the main body (101) comprising: a first terminal surface (102) substantially flat and configured to abut onto a first bone portion (1) of the joint (1, 2); a second terminal surface (103) substantially annular and configured to abut onto a second bone surface (2) of the joint (1, 2) opposite the first bone portion (1), the second terminal surface (103) having a first opening (10) for access to the second bone portion (2); at least one lateral element (104) configured for maintaining a three-dimensional spaced structure between the first terminal surface (102) and the second terminal surface (103), the at least one lateral element (104) defining a second opening (20) configured for allowing a lateral access inside the main body (101) and further an access to the second bone portion (2) through the first opening (10).

The application belongs to the technical field of medical image processing, and particularly relates to a kind of bone fracture block automatic reduction methods based on medical image;Including: obtaining the three-dimensional medical image data and three-dimensional label data after fracture of the object to be processed, and pre-processing the three-dimensional medical image data after fracture;The three-dimensional medical image data after fracture is input into the fracture surface segmentation model trained, and the main bone surface area and fracture block surface area are obtained;Three-dimensional coordinates are extracted and main bone surface point cloud and fracture block surface point cloud are constructed;Iterative closest point registration is carried out on the two kinds, and the cumulative rigid body transformation parameter is obtained;The voxel coordinate set corresponding to the fracture block is determined, and the voxel coordinate set is subjected to spatial transformation using the cumulative rigid body transformation parameter, to obtain the three-dimensional label result after reduction;The application can simultaneously complete the problems of automatic identification of fracture section and automatic solution of fracture block reduction posture, improve the degree of automation, result stability and interpretability of fracture block reduction process.

The utility model relates to a thighbone side guide plate based on two-point bridging type knee joint unicompartmental knee arthroplasty, which comprises a first auxiliary plate, a second auxiliary plate and a third auxiliary plate, modeling is carried out through knee joint CT data before an operation, and two cartilage-free bone surfaces around a thighbone operation area are set as supporting points, so that the thighbone side guide plate can be used for knee joint unicompartmental knee arthroplasty. A 3D printing technology is used for printing a guide plate used for thighbone side and tibia side positioning and osteotomy, the guide plate is provided with a first auxiliary plate, a second auxiliary plate and a third auxiliary plate, the second auxiliary plate and the third auxiliary plate can be directly attached to the bone surface of cartilage-free tissue, the position of the first auxiliary plate above an operation area is achieved through two-point positioning, and the position of the second auxiliary plate above the operation area is achieved through two-point positioning. The first auxiliary plate does not need to be attached to the bone surface of the operation area, that is, the first auxiliary plate is not affected by cartilage tissue above the operation area, the precision error caused by the cartilage tissue of the osteotomy area is avoided, an operator can be guided more rapidly and accurately to conduct positioning and osteotomy in the operation, and the operation time and process are shortened.

The utility model discloses an oral implant which comprises a bone surface supporting structure, the appearance of the bone surface supporting structure is attached to an upper jaw alveolar bone surface or a lower jaw alveolar bone surface, and a net-shaped through hole is formed in the bone surface supporting structure and corresponds to the alveolar bone surface; a plurality of base tables protruding out of the surface are arranged on the surface of one side of the bone surface supporting structure, and the base tables are used for fixedly connecting the oral implant with a prosthesis; one end, connected to the bone surface supporting structure, of the abutment is provided with an intraosseous implant implanted into the jaw bone. According to the utility model, the traditional subperiosteal implant is improved, the subperiosteal implant is designed in the area with insufficient bone mass of the jaw bone, and the novel stent-shaped implant is formed by combining the subperiosteal implant with the intraosseous implant in the area with sufficient bone mass of the jaw bone, so that independent bone increment operation is not needed, and the implant can be implanted only by one operation; and the clinical problem that a patient with serious atrophy of the alveolar ridge is difficult to implant and repair is effectively solved.

The invention discloses a femoral neck fracture treatment positioning plate, preparation equipment and a preparation method, the positioning plate comprises a main body plate and an adjustable guide module, the shape of the main body plate is matched with the anatomical form of the outer side bone surface of the proximal femur, and the main body plate is provided with at least one bone nail hole. The individualized main body plate accurately matched with the anatomical form of a patient is introduced, and the adjustable guide modules of various innovative designs are combined, so that the problem that a traditional positioning plate is poor in universality is effectively solved, and anatomical differences and operation requirements of different patients can be perfectly met; a spherical hinge, an offset sliding block-arc-shaped guide rail, an elastic deformation ring, a modularized guide sleeve and other structures are adopted by the guide module, the space angle stepless adjusting function is ensured, meanwhile, the mechanical structure is remarkably simplified, redundant parts are eliminated, high-rigidity and gapless locking is achieved, micro-motion and displacement in an operation are thoroughly avoided, and the operation efficiency is improved. And the accuracy and the reliability of screw placement are greatly improved.

A method comprises outputting a user interface of a surgical planning system, wherein the user interface represents a patient-specific glenoid prosthesis at a planned implantation position on a scapula of a patient; and determining a bone-facing surface of the patient-specific glenoid prosthesis having a native-facing portion and a modified-facing portion, wherein the native-facing portion is shaped to conform to an unmodified bone surface of the scapula and the modified-facing portion is shaped to conform to a modified bone surface of the scapula.

A bone registration method and system for joint replacement surgery, based on a VSF surface in a preoperative coordinate system generated from preoperative bone image data and a source point set SPS in an intraoperative coordinate system generated from point data collected from the patient's actual bone surface during surgery, determines the transformation relationship between the preoperative and intraoperative coordinate systems through initial and precise registration. The method includes: a first step: selecting multiple corresponding point pairs from the source point set SPS and the VSF surface, performing initial registration based on Singular Value Decomposition (SVD), and obtaining the initial transformation matrix; and a second step: performing precise registration based on the initial transformation matrix using the ICP method. Each ICP iteration employs a least-squares optimization method that minimizes the sum of squared distances between each point in the transformed source point set SPS and the corresponding projection points in the projection point set PSPS. The algorithm stops when the error is less than a set value or the number of iterations reaches a set value.

The utility model discloses a positioning cone, which relates to the field of surgical instruments and comprises a positioning rod, and a knocking mechanism is arranged at the top of the positioning rod and used for knocking the positioning rod to enable the lower end of the positioning rod to generate indentations on the bone surface of a patient. The lower end of the positioning rod is a spherical surface, a guide groove is formed in the positioning rod and used for inserting tendon lines, and a strip-shaped seam is formed in the bottom of the positioning rod and communicated with the guide groove. The device has the beneficial effects that the optimal pulling direction and the optimal anchoring point of the tendon line can be explored and pre-determined through the matching of the positioning rod and the guide groove, after the optimal anchoring point is found, the positioning rod is knocked through the knocking mechanism, so that the positioning rod generates an indentation on the bone surface of a patient, and then a threaded hole is formed in the indentation by using an electric drill; finally, the tendon lines are fixed in the threaded holes through the outer row nails, so that the accuracy of nail placement points can be improved, and the operation effect is improved.

The invention discloses a bone wax applicator. The bone wax applicator comprises a loading cylinder, a propelling assembly, a clamping component and a silica gel cylinder, the loading cylinder is of a hollow structure, the propelling assembly is movably installed in the loading cylinder, an extending cylinder is fixedly installed at the front end of the loading cylinder, the clamping component is movably installed on the extending cylinder, and the silica gel cylinder is detachably installed at the tail end of the clamping component. The silica gel cylinder is clamped by the clamping component to change the shape of the cross section of the silica gel cylinder, so that switching between line contact smearing and surface contact smearing is realized; through the arrangement of the clamping component, the shape of the cross section of a silica gel cylinder used for smearing can be changed from a round shape to an oval shape, so that the smearing area during smearing is increased, namely, a line contact mode can be changed into a surface contact mode for smearing, and through the arrangement, the smearing area is effectively increased, the smearing efficiency is improved, and the smearing effect is improved. And moreover, the smearing requirements of different bone surface bleeding can be met.

The utility model discloses a bone needle biopsy needle, which relates to the technical field of bone needle biopsy and comprises a handle and a groove arranged at the top of the handle, a sleeve penetrating through the handle is arranged at the bottom of the handle, a needle core and a sampling needle matched with the sleeve are inserted in the sleeve, and an inclined cutting edge is arranged at the bottom of the sleeve. Sampling lines are arranged on the inner wall of the sampling needle, the bottom of the needle core extends to the outer side of the sleeve, a polishing surface is arranged at the tail end of the needle core, the bottom of the needle core is an elliptical sphere, the whole sphere is made of metal with the hardness larger than that of a skeleton, and the polishing surface is arranged on the surface of the sphere. The grinding surface at the bottom of the needle core is ensured to have enough contact area with the bone, the grinding surface at the edge can be ensured to be in contact with the inner wall of a through hole when the needle core extending out of the sleeve is in contact with the through hole in the surface of the bone, and if the needle core cannot penetrate through the through hole, the through hole can be ground through the grinding surface at the tail end by rotating the needle core, so that the shape of the through hole is changed.

The invention particularly discloses immunoregulation type bone biological glue as well as a preparation method and application thereof, and relates to the technical field of bone biological glue. The invention provides an immunoregulation type bone biological glue which can regulate polarization, osteogenesis and angiogenic differentiation of macrophages, and further meets the clinical requirements of the bone biological glue for regulating an implant bone surface and interface immune microenvironment and osseointegration.

The utility model belongs to the technical field of medical instruments, and discloses a tibia osteotomy split guide plate which comprises a first guide plate body and a second guide plate body. The first guide plate body comprises a limiting block, a positioning rod fixedly arranged on the limiting block and a calibration block fixedly arranged on the limiting block, the end of the positioning rod is a first fitting curved surface attached to the upper bone surface of the tibia, and a force line hole is formed in the calibration block; an osteotomy groove is formed in the second guide plate main body, a screw placement hole is formed in the second guide plate main body, and one end of the second guide plate main body is a second fitting curved surface attached to the tibia side bone surface; the limiting block and the second guide plate body are connected through an insertion structure. According to the utility model, the screw can be placed once, the uniqueness of the screw channel is ensured, and the positioning accuracy and the success rate of osteotomy can be improved.

The present application relates to the field of medical devices, and in particular to a holding instrument and a fusion device assembly, wherein the holding instrument comprises an adjacent core shaft and a first drive assembly; the first drive assembly is adapted to drive the core shaft to rotate along its axial direction; further comprises a clamping portion and an inner tube adjacent in sequence; the inner tube is sleeved on the core shaft; further comprises a chuck, an outer tube, and a second drive assembly adjacent in sequence; the clamping portion is disposed in the chuck; the outer tube is sleeved on the inner tube; the second drive assembly can drive the outer tube to reciprocate relative to the extension direction of the inner tube; further comprises a positioning assembly, on which a bone surface positioning guide is provided. The present invention achieves fixation of the fusion device holder and the fusion device by connecting the core shaft to the fusion device, and prevents loosening of the core shaft connection during surgery by clamping the clamping portion; achieves positioning of the instrument during surgery by the positioning assembly, and controls the bending of the first flexible segment, the second flexible segment, and the third flexible segment by pulling the guide wire by the third drive assembly to adjust the placement angle of the fusion device.