104 results about "Bone ingrowth" patented technology

The invention relates to the technical field of medical instruments, and discloses an additive manufacturing bionic bone trabecula full-porous interbody fusion cage which is applied to spinal fusion surgery and is of a bionic bone trabecula full-porous structure made of medical metal through a laser melting or electron beam melting additive manufacturing technology. The interbody fusion cage comprises a front end face, a rear end face, a first side surface, a second side surface, an upper fusion face and a lower fusion face, the upper fusion face and the lower fusion face make direct contact with a vertebral body end plate of a spine, anti-skid teeth are arranged on the surfaces of the upper fusion face and the lower fusion face, and a bone grafting window penetrating through the upper fusion face and the lower fusion face is formed in the center of the interbody fusion cage. The interbody fusion cage has the structure and mechanical property similar to those of cancellous bone and trabecular bone of a human body, can improve the bone combination area and bone ingrowth space, has excellent initial and long-term stability, and can effectively reduce stress shielding so as to improve the bone fusion capability.

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.

A rotary tool configured for high-speed condensing and / or cutting action to enlarge a hole. The tool has a body around which is formed a plurality of flutes. Each flute has a cutting face on one side and a densifying face on the other side. A land between adjacent flutes establishes a substantially margin-less working edge along each cutting face. The working edges are configured to produce osseodensification when the tool is operated in the condensing mode. A transverse valley is formed at the apical end of the body. The valley is a relief in the tip that creates several secondary cut / grind edges that are useful to produce and evenly distribute bone debris. When withdrawing the rotary osteotome from an enlarged hole, a small button of bone debris remains at the bottom of the hole. The button remnant facilitates new bone ingrowth and osseointegration of a subsequently installed anchor.

The invention relates to a hip joint prosthesis. The hip joint prosthesis comprises an interstitial acetabular prosthesis and a femoral head reconstruction device. The interstitial acetabular prosthesis is stably connected with a pelvic acetabular fossa through the interstitial acetabular cup, the fixing screw and the interstitial acetabular lining, and adaptability and stability are enhanced through multiple designs such as petal openings and damping parts; the femoral head reconstruction device comprises a joint friction surface prosthesis and a bone ingrowth supporting cage frame, and reconstruction and stable supporting of the femoral head are achieved. According to the hip joint prosthesis, the technical effects of improving the stability and durability of the hip joint prosthesis, reducing postoperative discomfort of a patient and promoting bone tissue growth are achieved.

The invention provides an extramedullary 3D printing composite intramedullary fixing bone end broach system, and relates to the technical field of medical instruments. Comprising a bone prosthesis and a fixing system, and the fixing system comprises a broach which is arranged at one end of the bone prosthesis and is fixed in a medullary cavity through bone cement; the fixing piece is arranged at the end, close to the broach, of the bone prosthesis and makes contact with the host bone, and the contact face is a 3D printing interface; the preset part is used for replacing the fixing part to make contact with the host bone in the prosthesis mounting operation. According to the fixing system, the broach, the fixing part and the preset part are used in cooperation, bone cement in a medullary cavity is fixed through the broach, and 3D interface fixing is adopted through the fixing part, so that the bone prosthesis has good bone conductivity and mechanical stability in a long term and a short term; and the influence on bone ingrowth caused by the fact that bone cement falls into a 3D contact interface of the fixing piece in a prosthesis installation operation is avoided.

Knee arthroplasty implants, instruments, systems, and methods of implanting the same. The knee arthroplasty implants may include a femoral implant and a tibial tray implant, each with trabecular surfaces configured to contact bone to provide a scaffold for bone healing and interdigitation. The implants may also include fixation pegs with bulleted profiles to increase the surface area for bone ingrowth. An inserter instrument may include a sliding rack, which is incrementally extended with a rotatable shaft, thereby allowing for quick lock and release of various tibia trays.

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.

An prosthetic endcap device for amputated bone comprises an annular body with an expansion shield and integrated fixation elements. The device features a trabeculated surface for tissue integration, multiple transosseous holes for screw fixation, and an intramedullary hole for bone attachment. The expansion shield extends 5-10 mm radially with a bulbous profile at 10-45 degrees. Key dimensions include 3-5 mm body thickness, 15-40 mm height, and 1-2 mm diameter transosseous holes. Construction uses biocompatible materials including titanium alloys and PEEK. The device can connect to a second endcap via adjustable rods for dual-bone applications. Additional features include radiopaque markers, longitudinal grooves for bone ingrowth, and myodesis holes for soft tissue attachment. This innovation addresses amputation challenges with adaptable fixation and growth accommodation.

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.

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 utility model discloses a bionic movement intervertebral fusion replacement device, and relates to the technical field of medical instruments. In order to solve the problem that an existing fusion cage does not move relatively and does not conform to normal physiological characteristics of human beings, the following technical scheme is provided: the fusion cage comprises an upper fusion body, a lower fusion body and a lining, the bottom of the upper fusion body is rotatably connected with the top of the lining, and the lining is detachably connected to the top of the lower fusion body. A groove is formed in the bottom of the upper fusion body, the shape of the groove is matched with the shape of the top of the lining, the top of the lining is of an arc-shaped structure, porous structures are arranged at the top of the upper fusion body and the bottom of the lower fusion body respectively, and barb structures are arranged at the top of the upper fusion body and the top of the lower fusion body. The side end of the lower fusion body is provided with a rotary outer blocking piece, and a bolt locking lining is arranged outside the rotary outer blocking piece. The defect that the fusion cage cannot move relatively can be overcome, normal physiological characteristics of human beings are better met, and meanwhile sufficient supporting force and bone ingrowth capacity are achieved.

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.

This application relates to the technical field of medical devices, and particularly to an artificial knee joint prosthesis. An artificial knee joint prosthesis includes: a tibial tray; a liner mounted on the tibial tray; a femoral condyle prosthesis, which includes a femoral condyle metal component and a femoral condyle ceramic component. The femoral condyle ceramic component covers the outer wall of the femoral condyle metal component. The femoral condyle ceramic component is in sliding fit with the liner. The inner wall of the femoral condyle metal component is a 3D printed trabecular bone structure, which can achieve biological fixation and bone ingrowth. This application has the effect of reducing the friction between the liner and the femoral condyle prosthesis, reducing the particles generated by polyethylene wear, thereby reducing the occurrence of inflammation in patients, avoiding bone cement reactions, and reducing the occurrence of postoperative pain and joint instability in patients.

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.

The invention discloses a tantalum coating 3D printing acetabular cup-acetabular cushion block system, and belongs to the technical field of medical prostheses. The acetabular cushion block and the acetabular cup are firmly combined with the hip bone through screws, and the porous tantalum coating promotes bone ingrowth and achieves a better biological fixation effect. The radian of the acetabular cushion block is customized according to the bone defect position of a patient, the combination position of the acetabular cushion block and the acetabular cup can be selected, the angle can be flexibly adjusted, the acetabular cushion block is combined with the acetabular cup through a bottom adjustable lock catch, a self-locking structure is arranged, and uneven stress of the acetabular cup caused by looseness is prevented.

The invention relates to an intelligent fusion cage for lumbar malformation correction, and relates to the technical field of medical instruments, the intelligent fusion cage is formed by fixedly connecting three main frame bodies side by side, the upper end and the lower end of each main frame body are fixedly connected with a supporting body, the upper surface of each supporting body is of a wave-shaped structure and is composed of a plurality of convex bodies, the wave crests of each convex body are fixedly connected with antibiotic microspheres, and the wave troughs of each convex body are provided with BMP-2 slow-release gel; a relieving bag is fixedly connected into the supporting body, one end of the relieving bag is of a frustum-shaped structure, and the central point ratio CPR of the fusion cage is larger than or equal to 50% when the fusion cage is implanted; convex holes are annularly formed in the upper and lower surfaces of the main frame body, VEGF nano-liposomes are placed in the main frame body, permeation holes I with honeycomb structures are formed in the two side ends of the main frame body, and permeation holes II communicated with the interlayer channels are formed in the main frame body close to the bottom joint of the support body; the support body and the relieving capsule are composed of a PLGA / silk fibroin / nHA compound, the main frame body is Mg-Zn-Sr alloy, and the alloy is degraded to release ions to promote new bone ingrowth.

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 invention discloses a bone loss repairing device which comprises a repairing part, the repairing part serves as a metal implant and uses titanium alloy as a main material, extension assemblies are installed on the top wall and the bottom wall of the repairing part, a porous assembly is installed in the repairing part, and a plurality of fixing assemblies are evenly installed on the edge of the outer wall of the repairing part. The outer edge positions of the top wall and the bottom wall of the repairing piece are each provided with a release assembly. The porous assembly comprises outer wall holes, the multiple outer wall holes are evenly formed in the top wall of the repair part, and multiple inner wall holes are evenly formed in the bottom wall of the repair part. According to the bone deficiency repairing device, through the arrangement of the porous assembly and the multi-gradient aperture gradient change, the elastic modulus and the stress shielding effect can be reduced, bone tissue is approached, bone can grow into inner wall holes conveniently, meanwhile, the internal strength of an implant is increased, biocompatibility is good, rejection reaction is reduced, and bone ingrowth is promoted through the porous structure.

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.