117 results about "Bone grafting" patented technology

The invention of the gradient porous structured sacral prosthesis and the manufacturing process aims to create an alternative replacement for bone loss in patients who require bone replacement. The gradient porous structured sacral prosthesis consists of an artificial bone fragment, a metal rod, and a set of screws for fixing the fragments. The manufacturing process consists of seven steps: Identifying the position and boundaries of the bone, First-step topology optimization, Second-step topology optimization, Defining the structural pattern and unit cell size, Designing the artificial bone implant, Mechanical performance testing of the implant, and Fabrication of the sacral implant. The devices and processes according to the present invention are clearly sequenced and characterized. Modification or change in the manufacturing sequence or use may reduce the capabilities of the present invention or make it unusable for the purposes of the present invention.

The application discloses a spinal anterior structural bone grafting internal fixation device, which comprises a fixing sheath and a steel nail group, the steel nail group is arranged in the fixing sheath, the steel nail group comprises a first fixing nail, a second fixing nail and a third fixing nail, the top of the first fixing nail is connected with a bent first connecting arm, and the top of the second fixing nail is connected with a bent second connecting arm; an adjusting part for adjusting the telescopic length of the first connecting arm and the second connecting arm is arranged on a convex ring of the inner wall of the fixing sheath in a clearance fit mode, and a locking part is arranged above the convex ring; the third fixing nail is arranged in a through hole of the fixing sheath, the top surface of the third fixing nail is provided with a pressing block, and the pressing block presses the locking part into the space between the convex ring and the adjusting part. The device has good stability after the overall structure is combined, and the bone grafting block is fixed firmly; in addition, the device is light and thin, has a small volume, and thus needs a small wound to be formed, has less bleeding, has less damage to the bone, and reduces trauma during and after the operation.

The invention discloses a 3D printing bone grafting window-free porous tantalum metal interbody fusion cage which comprises a fusion cage body, the fusion cage body is integrally formed by machining medical-grade tantalum metal, and a clamping hole is formed in the front side of the fusion cage body and used for being connected with an operation instrument; the two groups of porous net racks are respectively fixed on the upper surface and the lower surface of the fusion cage body, the outer side surface of each porous net rack is a contact interface, and each contact interface is of an arc-shaped structure; bayonets are symmetrically formed in the inner wall of the front side of the fusion cage body, the clamping hole is formed between the bayonets, and the bayonets are used for limiting operation instruments. The porous tantalum material with high biological activity and high porosity is adopted, reliable spinal fusion can be achieved on the premise that bone grafting is not needed, the problems of bone taking trauma and donor region complications related to bone grafting and immunoreaction caused by allogeneic bone grafting are effectively solved, and therefore the occurrence risk of postoperative complications is reduced, and the bone grafting success rate is increased. The postoperative recovery process of the patient is improved.

The invention belongs to the technical field of medical instruments, and particularly relates to a multidirectional distraction osteogenesis correction system, in the multidirectional distraction osteogenesis correction system, the distance between a first fixing sleeve and a second fixing sleeve in supporting assemblies can be adjusted through a second traction assembly, and the distance between the two sets of supporting assemblies can be adjusted through a first traction assembly; the bilateral tooth-bone metastasis plate can be adjusted in the two-dimensional moving direction and the moving amount, the bilateral tooth-bone metastasis plate is allowed to move asymmetrically, transverse and sagittal differential distraction osteogenesis is achieved, and the bilateral tooth-bone metastasis plate is particularly suitable for cleft lip and palate patients with maxillary sagittal and transverse development insufficiency. According to the multidirectional distraction osteogenesis correction system, bilateral asymmetric distraction osteogenesis can be achieved, unilateral / bilateral alveolar process fractures of the front section of the maxillary dental arch are narrowed, the success rate of an alveolar process fracture bone grafting operation is increased, the alveolar bone mass of the middle section of the maxillary dental arch is increased, dentition congestion is relieved, space is provided for repair treatment, and the difficulty of subsequent treatment such as orthognathic surgery is reduced.

The invention relates to a preparation method of a plastic bone grafting material and the plastic bone grafting material.The preparation method comprises the following steps that a, phenyl phosphate lithium salt is dissolved in a phosphoric acid buffer salt solution to obtain a mixed solution, and Ge MA is dissolved in the mixed solution to obtain a Ge MA gel solution; b, bone meal and the Ge MA gel solution are subjected to a cross-linking effect, so that the bone meal and the Ge MA gel solution are fully mixed, then light source irradiation is conducted, the bone meal hydrogel bone grafting material is obtained, and the particle size of the bone meal is 0.25-0.5 mm. According to the preparation method of the plastic bone grafting material, provided by the invention, the bone meal and the Ge MA gel solution are subjected to cross-linking and then subjected to light source irradiation, so that the bone meal and the hydrogel are uniformly mixed, the compatibility of an organic phase and a bone meal particle interface is good, and the prepared plastic bone grafting material is relatively high in plasticity and good in osteoinductivity; and the cell adhesion rate is high.

The invention provides an artificial intelligence-based preoperative evaluation system for maxillary posterior tooth region implantation, which comprises the following steps of: constructing an oral cavity CBCT (cone beam computed tomography) image library, and further constructing a maxillary sinus basic model, an oral cavity maxillary posterior tooth region implantation decision design model and an oral cavity maxillary posterior tooth region windowing bone grafting decision design model; constructing a maxillary sinus downstream task model according to the maxillary sinus basic model; inputting the to-be-detected oral cavity CBCT image data into the maxillary sinus downstream task model, and calling the oral cavity maxillary posterior tooth region implantation decision design model to generate a first decision or calling the oral cavity maxillary posterior tooth region windowing bone grafting decision design model to generate a second decision according to the output qualitative and quantitative characteristics, so as to carry out preoperative evaluation. According to the method, the different characteristics in the oral cavity CBCT image are intelligently identified in a whole process, and the optimal oral cavity maxillary posterior tooth area implantation decision is generated to carry out oral cavity maxillary posterior tooth area implantation preoperative evaluation, so that the reliability of the oral cavity maxillary posterior tooth area implantation preoperative evaluation is improved.

The present application belongs to the technical field of biomedical materials, and relates to a bone repair material, a preparation method therefor, and use thereof. The preparation method comprises the following steps: mixing a sodium hyaluronate gel and bone graft particles to prepare a mixture; and performing heat treatment on the mixture under a second heat treatment condition, removing the solvent, and preparing a bone repair material, wherein the second heat treatment condition comprises: (1) the temperature of the heat treatment is about 100 °C-130 °C, and the heat treatment time is about 10 min-30 min; and (2) the pH value of the mixture is about 3-5. The amount of sodium hyaluronate per 100 g of the sodium hyaluronate gel is about 2 g-6 g. The sliding performance of the bone repair material is effectively reduced, and the repair effect is excellent.

The utility model relates to the technical field of medical instruments, in particular to an atlantoaxial bone grafting device. The atlantoaxial bone grafting device comprises a bone grafting funnel and a bone grafting device, wherein the bone grafting funnel comprises a hollow pipe part and a funnel part arranged at the top end of the hollow pipe part; the funnel pushing piece comprises a first pushing rod and a pushing part arranged at the top end of the first pushing rod; wherein the first pushing rod can be arranged in the hollow pipe part, and when the pushing part is limited above the opening in the top end of the hollow pipe part, the bottom end of the first pushing rod extends out of the opening in the bottom end of the hollow pipe part; the bottom end of the first pushing rod is a flat and blunt end. According to the technical scheme, the surgical instrument for bone grafting of the atlantoaxial lateral mass joint is provided, bone grafting is accurately and effectively completed through one-time operation of the bone grafting funnel, the surgical operation difficulty is remarkably reduced, the bleeding risk is reduced, the surgical time is shortened, and the postoperative fusion rate is increased.

The invention belongs to the technical field of biomedical materials, and discloses a natural tooth composite material bone grafting scaffold for alveolar bone repair and a design and preparation method thereof. The method comprises the following steps: collecting orthodontic teeth, impacted teeth, multiple teeth, loose teeth and other natural teeth extracted in oral medical treatment, and performing technical treatment to obtain raw material powder; ball-milling and mixing the bioactive glass powder, the carbon-based material powder and the natural dental powder to obtain mixed powder; the mixed powder is used as a raw material, and the bone grafting scaffold is obtained through computer aided design and digital light processing technology 3D printing; and modifying the surface of the 3D printing bracket by using the polydopamine-carbon-based material composite coating to obtain the natural tooth composite material bone grafting bracket. The natural tooth composite material bone grafting scaffold obtained by the invention has good mechanical property, controllable degradation property and antibacterial property, and has good biocompatibility and osteogenesis efficiency.

The invention discloses a traditional Chinese medicine ingredient modified bone graft material and a preparation method thereof, and relates to the technical field of bone graft materials. The feed additive is prepared from the following raw materials: calcined bone meal and a traditional Chinese medicine extract, the traditional Chinese medicine extract comprises a radix salviae miltiorrhizae extract and / or a radix scutellariae extract. The preparation method comprises the following steps: preparing calcined bone meal, preparing simulated body fluid and preparing the modified bone graft material. The product material can be applied to a dental bone grafting material. The traditional Chinese medicine extract is loaded on the bone material, and the bone material is modified, so that the bone graft material with good biocompatibility, osteogenesis promoting capability and better osteogenesis induction potential can be obtained.

The invention relates to the technical field of medical auxiliary instruments, in particular to a single-hand-operated electric bone grafting tool for a spinal endoscope, which comprises an electric bone grafting tool main body, an implanting mechanism is arranged at one end of the electric bone grafting tool main body, an inflating mechanism is arranged in the implanting mechanism, and an electric handle is arranged at the other end of the electric bone grafting tool main body. A top pipeline of the three-way valve is provided with a material injection mechanism, a bottom pipeline of the three-way valve is provided with a data processing mechanism and a gas filling mechanism, the outer side of the three-way valve is provided with a closing valve, one side of the electric handle is provided with a storage battery, and the data is fed back to the controller through the data processing mechanism. In addition, due to the linkage design of the electric drive and the material injection mechanism, the bone grafting material can be automatically supplied to the bone grafting channel through the conveying pump, the operation steps are simplified, and the operation efficiency is improved.

The application discloses a plastic bone bed and a spinal bone surgery method, and the plastic bone bed comprises a main body and an anchor nail, the main body is formed by a titanium alloy material, a middle crease is arranged on the back surface of the main body, two side creases are arranged on the front surface of the main body, the middle crease and the two side creases on the two sides of the middle crease divide the main body into four areas, a plurality of through holes in a display arrangement are arranged in each area, a polygonal hole is formed among every four through holes, the four corners of the main body are arranged below the nail caps of the screws in the rod system, and the two ends of the middle crease are designed to be slotted, and the two side parts of the slotted part of the main body and the spine of the patient are connected together through the anchor nail. The plastic bone bed is connected with the spine of the patient through the anchor nail, and the stability of the plastic bone bed is improved.

A customized resorbable three-dimensional scaffold for oral and maxillofacial bone grafting involves merging two sets of three-dimensional information obtained from a patient, the first set includes three-dimensional bone information and the second set includes three-dimensional teeth and tissue information. The merged information is used to generate a three-dimensional shape of the bone to be regenerated, a three-dimensional position of the missing tooth / teeth, and a three-dimensional model of the customized resorbable three-dimensional scaffold for oral and maxillofacial bone grafting. The three-dimensional model is used to generate the customized resorbable three-dimensional scaffold and resorbable connectors for the customized resorbable three-dimensional scaffold.

The utility model relates to the technical field of interbody fusion cages, in particular to a 3D (three-dimensional) printing fusion cage capable of grafting bones to induce bone growth, which comprises a fusion cage main body, the longitudinal channel penetrates through the fusion cage main body; the transverse channel penetrates through the fusion cage main body and is communicated with the longitudinal channel; the longitudinal channels and the transverse channels are filled with the porous structures; the fusion cage body and the porous structure are made of titanium alloy. The longitudinal channel and the transverse channel are perpendicular to each other, the longitudinal channel and the transverse channel are communicated to form the inner cavity of the fusion cage body, and porous structures made of titanium alloy materials are arranged in the longitudinal channel and the transverse channel, so that crawling and ingrowth of bone cells are facilitated, the long-term stability of the fusion cage body can be improved, and the bone fusion effect is better. And the fusion cage main body made of the titanium alloy material can better induce bone growth. By means of the structure, the bone fusion capacity of the fusion cage body is better than that of a PEEK fusion cage.

The utility model relates to the technical field of orthopedic medical instruments, and discloses a tibial prosthesis structure. Comprising a tibia prosthesis and a medullary cavity insertion section which are detachably connected, a first groove is formed in the outer side wall of the tibia prosthesis, a third groove is formed in the outer side wall of the medullary cavity insertion section, and the first groove and the third groove are sequentially communicated to form a long groove used for placing an implanted bone. The long groove is a bone grafting space extending in the length direction of the tibia prosthesis structure, the bone grafting material is contained in the long groove, on one hand, the bone grafting part can be prevented from protruding after an operation, and the occurrence rate of wound complications is reduced; on the other hand, healing of the patellar ligament and the bone grafting part is facilitated, the patellar ligament fracture risk is reduced, and the knee joint function of a patient is improved.

The invention relates to the technical field of orthopedic medical instruments, in particular to an anterior cervical fusion cage and a printing method.The anterior cervical fusion cage comprises a fusion cage body used for being implanted into the intervertebral space and a plurality of screws used for fixing, and screw holes allowing the screws to penetrate through are formed in the fusion cage body in a one-to-one correspondence mode; the fusion cage main body is provided with a bone grafting through hole for filling a bone body. The anterior cervical fusion cage has the advantages that the problems of an existing anterior cervical fusion cage in the aspects of mechanical conduction, interface biological adaptability, adjacent segment protection and the like are solved, and the structure of the anterior cervical fusion cage is optimized.

The invention relates to an interbody fusion cage and a preparation method thereof, and relates to the field of orthopedic implantation, the interbody fusion cage comprises a vertically placed cylindrical fusion cage main body and a pore structure fixedly connected in an inner hole of the fusion cage main body, and the pore structure is in a lattice net shape. The interbody fusion cage provided by the invention has a bone induction function, so that a good bone fusion effect can be achieved without bone grafting or with a small amount of bone grafting.

The invention provides a proximal tibia telescopic integral bone taking and grafting device, and belongs to the technical field of medical instruments. Comprising a handle, a conveying pipe is slidably connected into the handle, a funnel is fixedly connected to the outer wall of the conveying pipe, and a first annular sliding groove is formed in the inner wall of the end, close to the handle, of the conveying pipe; and the bone grafting assembly is used for assisting medical staff to perform bone grafting on the collapsed tibial plateau of the patient, and the bone grafting assembly is connected with the handle, the conveying pipe and the first annular sliding groove. By arranging the bone grafting assembly, the jacking area of a tibial plateau can be increased by matching deformation of a first connecting rod and a second connecting rod with a jacking piece, and meanwhile, a gap generated by deformation of the first connecting rod and the second connecting rod is matched with a discharging groove, so that a bone tunnel can be filled with filler conveyed by an auger from multiple directions; the jacked tibial plateau is preliminarily fixed, and it is avoided that when a subsequent bone grafting device is separated from a bone tunnel, the tibial plateau sinks and collapses, and resetting of the tibial plateau is affected.

The present invention relates to an implant structure having a cover screw for initial fixation and a fixture with a long neck portion capable of securing long-term osseointegration of an implant even after functional loading is applied in cases where bone quality is poor or bone volume is low or insufficient, extensive bone grafting is required, or bone grafting with maxillary sinus lift surgery is performed. The present invention comprises: a fixture (100) implanted in the jawbone to serve as a tooth root; a cover screw (400) inserted into and fixed to the fixture (100) to secure a fixation force of the fixture (100); an abutment (200) which has a lower portion inserted into the fixture (100) from which the cover screw (400) has been separated and removed and which has an upper portion to which a crown (10) is coupled; a fixation screw (300) which fixes the abutment (200) to the fixture (100); and a screw cap (500) coupled to the abutment (200) to cover the fixation screw (300).

The present invention relates to a bone graft composition comprising a mineral aggregate trioxide (MTA) and a porous synthetic bone graft material. The bone graft composition of the present invention can improve operability of the bone graft composition and form a high-strength structure by adding MTA.

The utility model discloses an elastic fusion cage and relates to the field of medical instruments, the elastic fusion cage comprises an elastic middle body, wedge-shaped clamping grooves are formed in the upper end and the lower end of the middle body, an upper end body is riveted to the upper end of the middle body and located in the wedge-shaped clamping grooves, and a lower end body is riveted to the lower end of the middle body and located in the wedge-shaped clamping grooves. The opposite sides of the upper end body and the lower end body are each provided with a bone grafting bin used for being fused with an adjacent vertebral body, and bolts are arranged between the upper end body and the middle body and between the lower end body and the middle body in an inserted mode. The fusion cage is matched with bone growth to fix the position, elasticity is achieved, the vertebra distraction effect is guaranteed, the upper end body and the lower end body of the middle body are hard, the middle body is elastic, and an elastic activity space is provided for growth of bone tissue in a bone grafting bin.

The utility model provides a bone grafting guide device visible under an endoscope, which comprises a bone grafting funnel, a hollow rod fixedly connected to the lower end of the bone grafting funnel and a bone grafting bar inserted into the hollow rod in a matched manner, and a handle is arranged at the upper end of the bone grafting bar; the hollow rod is a transparent hollow rod; a through hole communicated with the hollow rod is formed in the bottom wall of the bone grafting funnel, a cover plate capable of being opened and closed is arranged at the upper end of the through hole, and scale marks are arranged on the inner wall of the bone grafting funnel. The condition in the hollow rod can be conveniently observed under an endoscope, so that a doctor can conveniently observe the bone grafting process and the depth and the position of aggregate, and the doctor can better control the movement of the aggregate and the depth of a bone grafting bar; according to the bone grafting device, the aggregate dosage can be visually checked, recording is convenient, the aggregate does not need to be metered in other containers in advance, the problem that the aggregate is attached to the inner walls of other measuring tools and materials are not used accurately is effectively solved, other measuring tools do not need to be additionally cleaned, the operation cost is saved, and meanwhile the bone grafting efficiency is improved.

The present application relates to intervertebral fusion holder medical instrument technology field, specifically speaking, a kind of holder and holding method, the holder includes screw rod, inner sleeve, outer sleeve, knob, locking block, the front end of the outer sleeve is equipped with with the inner support block of fusion ware middle clamping connector, the outer sleeve is equipped with inner sleeve, inner sleeve and outer sleeve sliding do not rotate connection, inner sleeve rear end stretches out outer sleeve and is connected with knob screw, the rear end surface of inner sleeve is equipped with fixed tooth, screw rod is inserted into inner sleeve, the front end of screw rod stretches out outer sleeve, the rear end of screw rod stretches out inner sleeve and is equipped with locking block, the front end surface of the locking block is equipped with with the locking tooth of fixed tooth meshing, by the assembly of holder, fixed inner support block, fixed outer expansion block, locking, inner support block advance, disengage, bone grafting etc. Step is used, with simple structure, holding effect is good, holding operation is simple, and it has advantages such as improving bone grafting efficiency.

The present application relates to a kind of whole guide plate for bone graft sandwich bone grafting simultaneous implantation and manufacturing method, including the implantation guide plate of bone graft and implant, bone graft positioning finishing plate, tooth positioning device of bone area, osteotomy guide plate, tooth bone model of edentulous area, tooth bone model of bone area, the top of the implantation guide plate of bone graft and implant is connected with the bottom of bone graft positioning finishing plate, can be set with the several positioning points corresponding to bone area position in bone area by the guide drill needle hole on bone graft positioning finishing plate, can accurately transplant the bone graft taken to bone area;The osteotomy guide plate can be connected with tooth positioning device of bone area, also can be fixed in bone area according to the several positioning points;The present application can realize accurate, minimally invasive, safe to obtain intraoral autologous bone graft, can provide bone graft acquisition, finishing, implantation and implantation whole process guidance for surgeon, reduce the difficulty of operation, assist surgeon to complete the whole operation more accurately, efficiently, safely.

Disclosed is a bone graft harvesting device that includes a cutter section and a housing section secured to one another via a removable fastener, such as a manually operable screw. One of these sections includes a proximal end having a shaft configured for connection to a drill or other rotary tool, and the other may include a scoop for facilitation of removal of harvested bone from a patient. The cutter section and housing section may be separated from one another upon harvesting of bone from a patient to access harvested bone in a cavity of the housing.

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.

An implant trial is configured for placement onto a joint of a bone. The implant trial includes a central portion sized for receipt in a joint. The implant trial also includes a peripheral portion extending from the central portion. The peripheral portion includes a first region and a second region separate from the first region. When the central portion is received in the joint, the peripheral portion is configured to be received over a bone surface adjacent to the joint such that at least part of a surface of the first region is flush with a prepared bone surface and at least part of a surface of the second region faces a void in the bone. The second region has a lattice structure defined by a plurality of openings sized to allow bone graft to be received therethrough.

The invention discloses a distraction fusion cage which comprises a supporting assembly and a distraction assembly, and the supporting assembly comprises two supporting pieces oppositely arranged in the first direction; the distraction assembly comprises a first distraction piece, an adjusting piece and a second distraction piece which are sequentially connected in the second direction, the second distraction piece is connected between the two supporting pieces in a sliding mode, the first distraction piece comprises a connecting part and a distraction part connected between the two supporting pieces in a sliding mode, and the two ends of the connecting part are connected with the adjusting piece and the distraction part respectively; the adjusting piece is used for driving the opening part and the second opening piece to move relatively in the second direction, so that the two supporting pieces move relatively in the first direction; the connecting part comprises a bone grafting section extending in the second direction, the first distraction part comprises a bone grafting channel extending in the second direction and penetrating through the distraction part, part of the bone grafting channel is located in the bone grafting section, and at least one bone grafting window communicating with the bone grafting channel is formed in the peripheral face of the bone grafting section; part of the bone grafting sections are located on the two sides of the bone grafting channel in the first direction and the two sides of the bone grafting channel in the third direction.

The present invention relates to a prosthesis for implantation into an intervertebral space of a cervical vertebra, and specifically discloses an intervertebral fusion device, comprising: a fusion cage body having two end faces and a bone grafting window penetrating through the two end faces, the fusion cage body being implanted into the intervertebral space in such a manner that the two end faces thereof face end plates of two vertebrae, respectively; the bone plate is provided with through holes located in the upper portion and the lower portion respectively, the bone plate is arranged on the front side of the cervical vertebra and crosses two vertebrae defining an intervertebral gap, and the through hole in the upper portion and the through hole in the lower portion are opposite to the two vertebrae respectively; the bone screws penetrate through the through holes in the upper part and the lower part of the bone plate and are screwed into the vertebrae, so that the bone plate is respectively fixed with the two vertebrae; the linear component is provided with a near end and a far end, the near end of the linear component is attached to the middle of the bone plate, and the far end of the linear component extends into the intervertebral gap to be attached to the front side of the fusion cage body to limit displacement of the fusion cage body and maintain the fusion cage body in the middle area of the intervertebral gap.