60 results about "Bone ingrowth" patented technology

An implant assembly for a long bone is adapted to support an exo-prosthesis. The assembly includes a stem, a subdermal component and a percutaneous post. The stem has a proximal end that is adapted to be received in a surgically prepared medullary canal of the long bone, and a distal end having a surface that is adapted to promote bone ingrowth. The subdermal component includes a proximal portion that is adapted for attachment to the distal end of the stem, and a fixation surface that is adapted to promote soft tissue fixation. The percutaneous post has a proximal end that is adapted to be attached to the subdermal component.

A bone insert includes a cap having a convex top surface, an elongated stem, and a barrier between the cap and the stem. The stem of the bone insert is inserted into a hole formed in a host bone until the barrier is pressed against the exposed bone. The bone implant can be placed against a small focus contact point on the cap. Liquid cement can be injected into a space volume between the host bone and a bone implant. The cap can be made of a material and / or have surface features that create a strong bond with the cement when the liquid cement cures. The stem can be made of a material and / or have bone ingrowth surface features that create a strong bond with the bone.

The application discloses a 3D-printed intervertebral fusion cage, which is used to solve the problem of poor bone ingrowth effect of the prior art fusion cage, slow degradation speed, and early release of active ingredients, and the structure comprises a frame and an embedded pipe, the embedded pipe is arranged in the frame, the components are all made of degradable metal materials and can be gradually degraded in the human body, the embedded pipe is further encapsulated with active ingredients for promoting bone growth, and the active ingredients are released with the degradation of the embedded pipe, so that the early release of the drugs in the embedded pipe is avoided, long-acting effect is achieved, and of course a net beam is arranged in the gap of the frame, and the porous structure formed by the net beam further increases the bone ingrowth effect; the application creatively uses a 3D process to realize the encapsulation of the active ingredients and the forming of the porous support, and is combined with the degradable metal to realize the sustained release, so that a good growth condition is provided for the bone ingrowth in the porous support, the effect of the growth factors is fully played, and the treatment effect is improved.

The invention provides an individualized tibia defect repairing type knee joint prosthesis, and belongs to the technical field of orthopedic implants. The device is formed by assembling a femoral condyle, a femoral bone marrow needle, a plateau pad, a tibia plateau, a restoration body and a tibia bone marrow needle. Wherein the tibia platform and the restoration body are matched through metal-metal threads and are assisted by bone cement to achieve anti-rotation locking, the restoration body adopts a 3D printing individualized bone trabecula structure and is compounded with an HA coating to promote bone ingrowth, the tibia bone marrow needle and the platform are connected through a standard taper connector, inventory and individualization compatibility is achieved, and the bone marrow needle and the platform are connected through a standard taper connector. The defects that an existing prosthesis is large in bone mass loss, unattractive in reconstruction, free of bone ingrowth function, high in processing cost and the like are overcome, and the postoperative function of a tibia defect patient and the long-term stability of the prosthesis can be remarkably improved.

The invention discloses a tibia unicompartmental prosthesis, a femur unicompartmental prosthesis and a knee joint unicompartmental prosthesis component, the tibia unicompartmental prosthesis comprises a first mounting surface, and the first mounting surface is used for being mounted to a tibia osteotomy surface; the first mounting surface is provided with a first bone cement area and a first porous area; the first bone cement area is used for being fixed to the front side of the tibia osteotomy surface, and a first bone cement groove is formed in the first bone cement area and used for containing bone cement; the first porous area is used for being fixed to the rear side of a tibia osteotomy surface, the first porous area is provided with a first porous structure, and pores for bone ingrowth are formed in the first porous structure. In the application, the front side of the corresponding unicompartmental prosthesis is fixed through the bone cement, and the rear side of the corresponding unicompartmental prosthesis is fixed through the porous structure, so that the mounting stability of the corresponding unicompartmental prosthesis can be improved.

The application relates to a hip joint prosthesis, which comprises an interposition acetabulum prosthesis and a femoral head reconstruction device. The interposition acetabulum prosthesis is connected with the acetabular fossa of the pelvis stably through an interposition acetabulum cup, a fixing screw and an interposition acetabulum liner, and the adaptability and stability are enhanced through multiple designs such as petal opening and damping parts; the femoral head reconstruction device comprises a joint friction surface prosthesis and a bone ingrowth support cage, and the reconstruction and stable support of the femoral head are realized. The application achieves the technical effects of improving the stability and durability of the hip joint prosthesis, reducing the postoperative discomfort of patients and promoting the growth of bone tissue.

Systems, methods, and devices for bony fusion are disclosed. A threaded cannulated implant may be inserted into a target space, such as in the sacroiliac joint. The implant may have a distal section, a proximal section, and a central section between the distal section and the proximal section. The distal section may comprise cutting threads and flutes for self-drilling the implant into bone. The proximal section may be configured to couple to an insertion instrument for the implant. The central section may have a lattice structure through which bone graft may flow to promote bone ingrowth. A solid core region may be located inwards from the lattice structure. The central section may also have openings through the core region to connect the lattice structure to the cannula.

There is a fixation device for promoting fusion and / or osteosynthesis of a first bone segment and a second bone segment, comprising a bone plate portion including an outer surface, an inner surface and at least one fixation aperture extending from the outer surface to the inner surface and a bone wedge portion extending from the plate portion at a first end and a free opposite end, the bone wedge portion comprising a porous architecture configured to promote bone ingrowth, the wedge portion defining first and second engagement surfaces for engaging the first bone segment and a second bone segment, respectively. There is also a method of manufacturing a fixation device for promoting fusion and / or osteosynthesis of a first bone segment and a second bone segment, a method of promoting fusion and / or osteosynthesis of a first bone segment and a second bone segment, and a fixation kit.

The application claims a preparation method of a ceramic / polymer continuous gradient porous scaffold, and belongs to the technical field of biological tissue engineering bone scaffold. The porous scaffold structure adopts a three-period minimal surface (TPMS) design, and the scaffold structure and volume fraction are controllable. The continuous gradient material adopts a mixed slurry of different volume fractions of hydroxyapatite powder and photosensitive PLA resin as the material, and a gradient polylactic acid layer containing 0% to 30% of nano-hydroxyapatite is sequentially arranged from inside to outside. The high volume fraction of HA / PLA on the outside promotes cell adhesion and improves the bone ingrowth ability. The pure PLA scaffold is prepared by a 3D printing stereolithography forming method, the scaffold surface is activated by using a plasma cleaning process, the slurry with the ceramic material composition on the outer layer is attached to the scaffold surface by using a solution immersion method, the excess slurry in the pores is removed by using a centrifugal device, and ultraviolet light (wavelength range 360-410 nm) is used for irradiation and curing. The application uses a continuous gradient to overcome the shortcoming of the sharp change of the performance of the traditional composite material at the material interface, which leads to stratification.

The application relates to the technical field of intervertebral fusion cages, and particularly discloses a preparation method and system of a self-stabilizing intervertebral fusion cage based on 3D printing, which comprises the following steps: obtaining medical image data of a target patient; reconstructing a personalized intervertebral three-dimensional geometric model based on the medical image data; performing finite element mechanics simulation based on the personalized intervertebral three-dimensional geometric model to generate a stress distribution nephogram; dividing functional zones according to the stress distribution nephogram, wherein the functional zones comprise a high-stress support zone, a bone ingrowth induction zone and a critical transition zone; configuring differentiated hole structures for the functional zones, and setting a self-stabilizing structure at the junctions of the functional zones to generate a three-dimensional digital model of the self-stabilizing intervertebral fusion cage; and performing 3D printing based on the three-dimensional digital model to obtain the self-stabilizing intervertebral fusion cage. Through personalized modeling, mechanics simulation functional zone division, multi-target optimization hole structure and self-stabilizing design, the application solves the problems of insufficient mechanical stability and poor bioactivity of existing intervertebral fusion cages.

The invention discloses an additive-manufactured biological tibia tray prosthesis and a manufacturing method thereof, and relates to the technical field of artificial knee joint prostheses. The biological type tibia support prosthesis comprises four types: a biological type symmetrical tibia support, a biological type symmetrical stemless tibia support, a biological type anatomical tibia support and a biological type anatomical stemless tibia support. The prosthesis mainly comprises a support body, a porous structure, a plug pin and the like, and is integrally formed through an additive manufacturing technology, so that the precision and the strength are ensured. The porous structure is designed to be in an irregular space three-dimensional grid shape, the thickness ranges from 0.6 mm to 1.6 mm, and the porous structure is used for promoting bone trabecula ingrowth and achieving biological fixation. The positioning nail adopts a bullet-shaped design and is provided with an exhaust groove and a notch, so that the installation is simplified and the stability is enhanced. The manufacturing method comprises the steps of design modeling, stress optimization, additive manufacturing and aftertreatment, and the prosthesis is made of a titanium alloy material and meets related international standards. The invention has the advantages of simple installation, reliable fixation, good bone ingrowth effect and the like.

The invention discloses a low-incisura cervical vertebra fusion cage, and belongs to the field of orthopedic medical instruments. The fusion cage comprises a fusion cage body and a nail plate assembly, the fusion cage body comprises a top supporting plate, a bottom supporting plate and a porous structure, the space between the top supporting plate and the bottom supporting plate is filled with the porous structure, the fusion cage body is provided with a bone grafting bin penetrating through the top supporting plate, the porous structure and the bottom supporting plate, and the bone grafting bin communicates with the porous structure; the fusion cage body is provided with an implantation front end and an implantation rear end, the implantation rear end is provided with a connecting plate mechanism, the nail plate assembly is fixedly arranged at the implantation rear end of the fusion cage body through the connecting plate mechanism, and the nail plate assembly and the fusion cage body are detachably arranged. The intervertebral fusion device is reasonable in structural design, smooth and efficient in implantation operation, stable and firm in implantation use, good in bone ingrowth effect and short in postoperative recovery period of a patient, postoperative complications of the patient can be effectively reduced, and the use requirement of intervertebral fusion is met.

This invention relates to the field of veterinary medical device technology, and more particularly to a high-performance orthopedic implant for veterinary use and its preparation method. The method includes: preparing a solid external structure using additive manufacturing technology with a matrix material, and preparing a three-dimensional porous structure for the bone contact area on the solid external structure; preparing a micromaterial layer on the three-dimensional porous structure for the bone contact area using PVD technology, thereby obtaining the high-performance orthopedic implant for veterinary use. The preparation method of this invention combines additive manufacturing with technologies such as spraying, PVD, and laser sintering, employing cold spraying combined with laser sintering to overcome the non-metallurgical bonding defects of pure cold spray coatings, improving bonding strength and implant lifespan. The prepared implant possesses high mechanical strength, precise three-dimensional porosity, suitable elastic modulus, and good biocompatibility and osteoinductive properties. Through the synergistic effect achieved by the microporous structure and multi-material composite, excellent bone ingrowth can still be achieved even in cases of bone cell infarction.

The application provides an intervertebral fusion prosthesis and an intervertebral fusion prosthesis assembly, the intervertebral fusion prosthesis comprising: an outer shell, the outer shell being provided with a first conduction nail hole; a first bone conduction nail, the first bone conduction nail being arranged in the first conduction nail hole and extending out of the outer shell, the first bone conduction nail comprising a first connecting head, a first nail barrel and a first bone conduction body arranged in the first nail barrel, the outer side wall of the first nail barrel being provided with a first threaded structure, the first connecting head being provided with a first butt joint groove and the first butt joint groove being communicated with the accommodating cavity; a first adjusting body being provided with a first bone conduction block; a second bone conduction body being arranged in the first connecting barrel, the first connecting barrel extending into the first bone conduction block, and the end of the first connecting barrel being inserted into the first butt joint groove. The technical scheme of the application effectively solves the problem that the effect of the intervertebral fusion prosthesis in promoting bone ingrowth is poor in the related art, and the long-term stability of the intervertebral fusion prosthesis after implantation is poor.

The invention provides an artificial intervertebral disc, and belongs to the field of medical implantable orthopedic medical instruments. The artificial intervertebral disc comprises an upper end plate, a lower end plate, an upper-end porous structure, a lower-end porous structure and an elastic body for connecting the upper end plate and the lower end plate with the upper-end porous structure and the lower-end porous structure, the upper end porous structure and the upper end plate are integrally formed, the lower end porous structure and the lower end plate are integrally formed, and the elastic body, the upper end plate, the lower end plate, the upper end porous structure and the lower end porous structure are integrally formed. According to the artificial intervertebral disc, the elastic body and the end plate are firmly combined to form a mutually embedded and coated integrated structure, so that material damage and abrasive dust hidden dangers caused by interface friction between the end plate and the elastic body material are effectively reduced or eliminated; the outer surfaces, making contact with the human body bones, of the upper end plate and the lower end plate are each of a porous structure, anti-rotating thorns are distributed, and the immediate stability and osseointegration after operation are improved. The artificial intervertebral disc has the advantages of being firm in structure, not prone to damage and good in bone ingrowth effect, and the movement function of a normal intervertebral disc in a human body is met.

The invention discloses a 3D printing bone grafting bin-free interbody fusion cage which is characterized in that the 3D printing bone grafting bin-free interbody fusion cage comprises a supporting structure and a porous structure, the porous structure and the supporting structure are integrally printed and formed, the porous structure is constructed through connecting rods which are mutually connected in a space, and the porous structure is filled and stacked in the supporting structure; the support structure includes an edge. A through hole is formed in a gap between the connecting rods, and the through hole of the supporting structure is in an irregular shape. The 3D printing bone grafting bin-free porous interbody fusion cage is of a hexahedron structure, and the contour of the side wall of the porous structure achieves circular arc transition through fillets. The problems that a traditional interbody fusion cage is too high in elasticity modulus and has a stress shielding effect can be solved, the elasticity modulus of the 3D printing bone grafting bin-free porous interbody fusion cage is matched with the elasticity modulus of a human body bone of a patient part, bone grafting is not needed, and a good bone ingrowth effect can be achieved.

The present application relates to the technical field of medical devices, and discloses a knee joint prosthesis, which comprises a trabecular bone type, one side of the trabecular bone type is provided with a front condyle side, the other side of the trabecular bone type is provided with a notch, both ends of the trabecular bone type notch are provided with distal end sides, the upper surface of the distal end side is provided with a trabecular column, one side of the distal end side is provided with a rear condyle side, the side wall of the trabecular bone type is provided with a femoral condyle body, the inside of the trabecular column is provided with a column, one side of the rear condyle side is provided with a femoral component surface, and the outer wall of the femoral component surface is provided with. The femoral side prosthesis realizes better fusion of the femoral side prosthesis and bone tissue, promotes bone ingrowth, and achieves the effect of long-term stable fixation. The problems of poor long-term stability, easy loosening and easy wear of the friction interface of the traditional femoral side prosthesis are solved, and the service life of the prosthesis and the life quality of the patient are improved.

A spine internal fixing device with a fusion function comprises a pedicle screw, the pedicle screw comprises a screw body, a screw tail is arranged at the upper end of the screw body, a nut is connected to the screw tail through internal threads, the screw body and the screw tail are of a honeycomb structure simulating cancellous bone, and solid external threads are arranged on the outer surface of the screw body. According to the spinal internal fixation device with the fusion function, a full-assembly simulation cancellous bone honeycomb structure of a pedicle screw rod nut and a matched connecting piece is prepared by adopting a 3D printing technology, and meanwhile, solid structures of key stress parts such as an external thread tip threaded connection surface are reserved so as to guarantee early mechanical fixation strength; after the components are assembled, a continuous bone ingrowth channel is formed, so that the transformation of internal fixation of the spine from temporary mechanical support to permanent osseous fusion is realized, and various intervertebral, intervertebral, posterior lateral and transverse process bone grafting fusion steps in a traditional spine fusion operation can be omitted.

The invention provides a 3D printing composite material stent and a preparation method thereof. The 3D printing composite material stent is prepared by combining a 3D printing technology, casting, injection molding and a seepage method. According to the method, the porous structure of the 3D printing material and other materials are combined, the stent with excellent mechanical properties is prepared, the problem that a composite stent cannot be effectively and directly prepared through existing 3D printing is solved, and the technical problem that most 3D printing materials such as titanium alloy and tantalum alloy are not firmly combined with other materials is solved. The preparation method comprises the following steps: designing a porous structure three-dimensional model, and exporting printer recognition format data; performing 3D printing to obtain a porous structure; designing and / or selecting other materials and preparing a mold; the porous structure obtained through 3D printing is relatively fixed in a mold; other materials are poured into the mold, and the materials can flow into pores of the 3D printing porous structure; and curing and / or hardening to obtain the 3D printing composite material stent. The 3D printing composite material support can be used in orthopedic implants, has the advantages of being firm in structure, not prone to damage and good in bone ingrowth effect, can be applied to large-segment bone defects of bearing parts, promotes bone tissue regeneration on the basis of achieving mechanical supporting, and achieves the curative effect of repairing the large-segment bone defects.

The invention discloses a hip joint prosthesis system and a preparation method thereof. The hip joint prosthesis system comprises a thighbone assembly, an acetabulum assembly and a soft tissue fixing device. The femoral component comprises a femoral stem and a femoral bulb, the femoral stem comprises a bone contact surface used for being combined with the thighbone of a user and a near-end bearing portion used for being connected with the femoral bulb, the near-end bearing portion extends laterally to form a neck, and the neck is provided with an interface structure. The bone contact surface of the femoral stem and the bone contact surface of the acetabular cup are each provided with a three-dimensional porous structure. The acetabulum assembly comprises an acetabulum lining arranged on the femur ball head in a sleeving mode and an acetabulum cup arranged outside the acetabulum lining in a sleeving mode. The soft tissue fixing device is mounted on the interface structure; the pore characteristic parameters of the three-dimensional porous structure on the femoral stem change in the axial direction of the femoral stem. According to the invention, the limitation that the traditional uniform coating cannot give consideration to the optimal bone ingrowth conditions of different bone regions can be overcome, and uniform and firmer osseointegration of the prosthesis in the body of a patient can be promoted.

The application discloses a prosthesis capable of fixing a proximal femur in hip joint revision surgery and relates to the technical field of medical devices.The prosthesis comprises a femoral stem body and a dynamic auxiliary structure.The dynamic auxiliary structure comprises a side groove, a counterweight and a limiting seat.The side groove is provided through the wide side of the femoral stem body.The two side ports of the side groove are provided with elastic plates, and the side groove is provided with a guide rod.The counterweight is movably sleeved on the guide rod.A traction spring is arranged between the top of the counterweight and the end of the side groove.The two sides of the counterweight are embedded with protrusions.The limiting seat is arranged on the inner wall of the side groove and located on the two sides of the counterweight.A guide column is slidably arranged through the limiting seat, and the end of the guide column close to the counterweight is provided with a transmission seat corresponding to the protrusions.The prosthesis can reduce the micromotion of the prosthesis and the femoral medullary cavity, promote bone ingrowth, reduce the incidence of long-term loosening, activate osteoblast activity, inhibit osteoclast proliferation, maintain the bone mass around the prosthesis, and prolong the service life of the prosthesis.

The invention provides a bone ingrowth type integrated silicon nitride ceramic acetabular cup used in total hip arthroplasty, and relates to the field of medical clinic. The silicon nitride light-cured coating is prepared from the following raw materials in parts by weight: 58 to 75 parts of silicon nitride composite powder, 16.9 to 26.3 parts of light-cured resin, 2.85 to 15.3 parts of a diluent, 0.153 to 1.46 parts of an initiator, 0.002 to 0.028 part of an ultraviolet inhibitor, 0.27 to 2.9 parts of a dispersing agent, 0.015 to 0.18 part of a flatting agent and 0.024 to 0.143 part of a de-foaming agent. According to the ceramic acetabular cup, the silicon nitride ceramic acetabular cup with the coating can be directly in press fit with the acetabulum in the operation, osseointegration is achieved between the silicon nitride ceramic acetabular cup and the acetabulum, a ceramic lining does not need to be used, and the problems that in the prior art, the acetabular cup and the ceramic lining are mistakenly assembled, deformation is generated when the metal acetabular cup is in press fit, and consequently the ceramic lining is broken are solved to a certain extent.

The invention discloses a 3D printing porous interbody fusion cage which comprises an upper end face, a lower end face, a first side face, a second side face and an internal structure. The upper end face comprises an upper end face support and an upper end face porous structure; the lower end face comprises a lower end face support and a lower end face porous structure; the first side face and the second side face are oppositely arranged and are connected to the front end and the rear end of the 3D printing porous interbody fusion cage, and an instrument groove is formed in the rear end of the 3D printing porous interbody fusion cage; the internal structure is filled with the internal porous structure, and the upper end face porous structure, the lower end face porous structure and the internal porous structure are all formed by filling and stacking connecting rods. According to the 3D printing porous interbody fusion cage, the problems that a traditional interbody fusion cage is too high in elasticity modulus and has a stress shielding effect can be solved, the elasticity modulus of the 3D printing porous interbody fusion cage is matched with the elasticity modulus of a human body bone of a patient part, and therefore a good bone ingrowth effect can be achieved without bone grafting or a small amount of bone grafting.

The application discloses an intramedullary fixation device for femoral intertrochanteric fracture, which comprises a nail body, a cavity extending along a longitudinal axis from a proximal end to a distal end is arranged in the nail body, a force carrier system is arranged on the nail body to create a dynamic control at a human femoral neck and femoral head to eliminate stress shielding and realize controllable transverse dynamic force, the force carrier system comprises a movable assembly arranged at the proximal end of the nail body and at least one sliding piece arranged at the distal end of the nail body, the movable assembly serves as a main power source of the transverse dynamic force while playing a connecting and fixing role on the femoral neck and femoral head, and the sliding piece is used for the movable connection between the distal end of the nail body and the femoral body. The application can decompose the stress concentration and stress shielding of the locking nail on the intramedullary nail, enhances the bending strength, and realizes the stability of biomechanics. The proximal end of the intramedullary nail is coated with titanium, has a high friction coefficient, provides initial stability and long-term bone ingrowth effect, and can effectively reduce the occurrence of broken nail, bone nonunion and delayed bone healing.

A corpectomy implant device having a solid portion, structural volume and porous end plates configured is disclosed. In some embodiments, the corpectomy device comprises a stochastic lattice structure in the structural volume of the device to reduce stiffness and improve radiolucency. In some embodiments, the porous endplates comprise a lattice configured to provide porosity for bone ingrowth. In some embodiments, endplates are configured to facilitate insertion of the implant between the adjacent vertebrae and to provide anchoring of the corpectomy device to and prevent migration of the device implant in an installed state.

The utility model provides a skull implant which comprises an implant body, a plurality of first holes are formed in the surface of the implant body, the porosity of the implant body ranges from 5% to 50%, a plurality of second holes are formed in the edge of the implant body, and an included angle is formed between the hole axis of each second hole and the plane where the edge of the implant body is located. After the skull implant is implanted, the first hole in the implant main body assists liquid diffusion and cell tissue ingrowth, a small amount of subcutaneous effusion can be dispersed and absorbed by the cell tissue, and a false membrane is prevented from being formed between the skull implant and the cell tissue, so that the occurrence rate of generation of the subcutaneous effusion is reduced. When the skull implant is used, the edge of the implant body makes contact with bone tissue, the second hole is matched with the direction in which the bone grows into the skull implant, conditions are provided for the bone tissue to grow into the skull implant, the integration effect of the bone tissue and the skull implant is improved, and bone growth and healing can be effectively promoted.

The application provides a multilayer degradable porous bone scaffold for bone repair and a preparation method thereof, and is a new structure of a porous bone scaffold based on a three-period minimal surface, comprising an outer layer, an intermediate transition layer and an inner layer, each layer is a porous structure, and the porosity decreases from the inner layer to the outer layer in turn to simulate the gradient porous structure and the gradient mechanical properties of human bone; wherein the thickness of the outer layer is set according to the compact bone thickness of the used part, the thickness of the inner layer is set according to the spongy bone thickness of the used part, and the intermediate transition layer is used for smooth connection of the inner and outer layer porous structures and mechanical properties. Through the multilayer gradient structure design, the application can simulate the gradient porous structure of human bone, realize high adhesion with the real bone structure of human body, improve the bone ingrowth efficiency, improve the bone repair effect, and at the same time has good mechanical support performance and controllable degradation performance.

Systems, methods, and devices for bony fusion are disclosed. A threaded cannulated implant may be inserted into a target space, such as in the sacroiliac joint. The implant may have a distal section, a proximal section, and a central section between the distal section and the proximal section. The distal section may comprise cutting threads and flutes for self-drilling the implant into bone. The proximal section may be configured to couple to an insertion instrument for the implant. The central section may have a lattice structure through which bone graft may flow to promote bone ingrowth. A solid core region may be located inwards from the lattice structure. The central section may also have openings through the core region to connect the lattice structure to the cannula.

The utility model relates to the technical field of artificial intervertebral discs, in particular to an artificial intervertebral disc with a springback function, which comprises an artificial intervertebral disc body, and the artificial intervertebral disc body is of an integrally formed structure or a split structure. The artificial intervertebral disc body comprises an upper fixing plate, a lower fixing plate and an elastic body arranged between the upper fixing plate and the lower fixing plate; the outer surfaces of the upper fixing plate and the lower fixing plate are respectively provided with micropores and biological coatings for bone ingrowth induced by hydroxyapatite, and the upper fixing plate and the lower fixing plate are respectively provided with a plurality of round holes and fixing teeth. The intervertebral plate is reasonable in structural design, can perform multiple fixation on the vertebral body, can perform good axial compression and rebounding in the longitudinal axis direction of the vertebral column of the human body, can perform flexion and extension, lateral bending, rotation and other motions, can reconstruct dynamic stability of an intervertebral long segment after the intervertebral plate and the vertebral body are cut off, and is high in physiological activity matching degree with the normal vertebral column of the human body; implantation is convenient, fixation is stable, rebound resilience is high, and elasticity is lasting.

In embodiments of the invention, an implant that anchors into bone may have a bone-facing region that comprises a plurality of interconnected struts. The interconnected struts may define local features such as engagement ridges, fins, crests, a macroscopic surface-interrupting feature, a divertor structure, and sawteeth in any combination. Such features may help resist translation or rotation of the implant, and may be conducive to bone ingrowth. Parameters such as local empty volume fraction and local average strut length can be varied, even within the features, by the design of the network of struts. Struts may be tapered. Cantilever struts may also be provided, which may point in a desired direction. The pattern of struts may be specified to the level of dimensions and location of individual struts. The implant may be manufactured by additive manufacturing methods. The mesh of struts may be generated by an algorithm using Voronoi tessellation.