72 results about "Bone Trabeculae" patented technology

The invention discloses a bone trabecula hip joint system. The system comprises a series of bone trabecula assembled femoral components, caput femoris, bone trabecula oversleeves, bone trabecula assembled acetabular cups and bone trabecula acetabulum cushion blocks. The surface structures of the bone trabecula assembled femoral components, the caput femoris, the bone trabecula oversleeves, the bone trabecula assembled acetabular cups and the bone trabecula acetabulum cushion blocks are all metal bone trabecula structures and manufactured by means of the metal 3D printing technology, the structural form of holes and porosity can be accurately controlled, a plurality of specifications are available, and assembly can be conducted freely. The system has the advantages that fastness and effectiveness are realized, postoperation osseointegration is facilitated, service life is prolonged, postoperation revision rate is reduced, serious femur and acetabulum deformation is effectively solved, complicated joint primary replacement surgery and revision surgery under the condition of various forms of bone defects can be conducted, and the requirements of various patients for prosthesis customization are met.

The invention discloses a metal bone trabecula. The metal bone trabecula comprises at least three crossed metal bone trabecula supports, a micro-topological grid structure is embedded into the metal bone trabecula, and at least three intersection points are formed between the micro-topological grid structure and the metal bone trabecula supports. The bone trabecula is formed by regularly or irregularly arranging hollowed-out unit structure bodies in a three-dimensional space, the weight reducing effect is obvious, meanwhile, the requirement of rigidity and strength of different areas of partscan be met at the same time, stress shielding is avoided, and good matching of high strength and high weight reduction ratio can be achieved; in addition, after growing into the bone trabecula structure comprising a micro-topological grid, human body sclerotin can be fused with bone, bone ingrow can be induced to the largest extent, and accordingly long-term biological fixation of a prosthesis canbe achieved. Meanwhile, the invention further discloses a bone implant comprising the metal bone trabecula. The bone implant can achieve personalized customization through 3D printing, the process issimplified, and the economic cost is greatly reduced.

A device for forming a cavity in a centrum comprises a cutting part and a control device, wherein the cutting part is used for cutting the centrum and the control device is used for controlling the cutting part to cut the centrum. The control device comprises a bearing part used for bearing the cutting part, and the end, adjacent to the cutting part, of the bearing part is provided with a bendable portion. The bearing part comprises a direction limiting part used for controlling the bending direction of the bearing part and a limiting part used for controlling the bending angle of the bearing part. The bearing part can further comprise a protective part. The control device further comprises a manipulation assembly used for controlling the bearing part to bend. The device can effectively avoid dangers caused by bilateral puncture in the prior art, the shape of the cavity is controllable, meanwhile, damage to bone tissue is reduced, and bone cement can permeate between bone trabeculae more effectively.

The invention discloses a biological-type knee joint partition bone trabecula tibial plateau. The biological-type knee joint partition bone trabecula tibial plateau comprises a reniform plateau bearing part, a handle is arranged in the middle of the lower surface of the reniform plateau bearing part, parts, except the connecting handle, of the lower surface of the reniform plateau bearing part areprovided with bone trabeculae, and the reniform plateau bearing part is divided into an inner side area, a middle area and an outer side area; the hole diameter and porosity of the bone trabeculae inthe inner side area are larger than those of the bone trabeculae in the outer side area and the middle area in sequence. The partition bone trabecula tibial plateau is integrally formed through 3D printing of titanium alloy, and the hole diameters and porosities of the bone trabeculae arranged in different areas of the lower surface of the tibial plateau are different. An experiment proves that through partition arrangement of the bone trabecula of the biological-type knee joint tibial plateau, under the actual circumstance of uneven stress of the tibia, uniform bone ingrowth is achieved, andthe long-time stability of the biological-type tibial plateau is improved. through 3D printing, the surface of the whole component is rough, friction between the plateau and the tibia is increased, and the initial stability of the plateau is improved.

A computer-implemented bone-implant system evaluation method for application of mesh-free analysis of a bone-implant system for evaluation of performance of a bone-implant system for an implant implanted within the bone structure at an anatomical site, said method comprising (i) receiving a set of bone structure data set, wherein set of bone structure data includes data indicative of the bone structure at an anatomical site; (ii) inputting an implant data set and inputting the position of the implant data set, wherein the implant is selected based upon the biomechanical requirements for the anatomical site and the position and of the implant data set is indicative of the position of the implant with respect to the anatomical site, wherein implant data set includes data representative of the geometry and materials properties of the implant; (iii) creating a bone-implant model, wherein said bone implant-model includes a mesh-free model of trabecular bone at the anatomical site wherein the bone-implant model is formed from the bone structure data set from step (i) and the implant data set from step (ii), and wherein the mesh-free model of trabecular bone is indicative of the trabecular bone structure of the bone structure at the anatomical site; and (iv) determining a biomechanical result based upon computer simulated loading of the bone-implant system based upon mesh-free analysis of the bone-implant model, wherein the biomechanical result includes data based on the displacement of the implant relative to the bone of bone-implant model.

The invention discloses a bone mineral density detection equipment and detection method based on a magnetic resonance T2 relaxation time spectrum. A bone mineral density is detected based on the magnetic resonance T2 relaxation time spectrum. The detection equipment comprises a computer control terminal, a one-board magnetic resonance controller unit, a signal amplification and switch control unit and a magnet unit. According to the bone mineral density detection equipment and detection method, water molecule magnetic resonance transverse relaxation deamplification is measured firstly, the corresponding T2 relaxation time spectrum is obtained through a mathematical inversion method, structural characteristics of pores among bone trabeculae are determined by analyzing all peak values on the T2 relaxation time spectrum, and biological bone mineral density data is obtained through a regression analysis data processing method finally. The bone mineral density detection equipment and detection method can be applied to identification of osteoporosis, the functions of rapidly and nondestructively analyzing and measuring the bone mineral density, evaluating the bone quality and the like are achieved, and the bone mineral density detection equipment and detection method have the advantages of being safe and harmless to organisms, simple in equipment structure, small in size, light in weight, high in measurement precision, easy and convenient to operate, high in repeatability of measurement method and the like.

The invention provides an ultrasonic apparatus for preventing osteolysis from appearing around a prosthesis after joint replacement. The ultrasonic apparatus is mainly composed of a processor, an ultrasonic generator, an output probe, a display screen, an operation rotary knob, a power supply and an ultrasonic apparatus shell, wherein the processor and the ultrasonic generator are located in the ultrasonic apparatus shell, the processor, the ultrasonic generator and the display screen are connected with the power supply in series, and the ultrasonic generator is connected with the output probe. The ultrasonic apparatus is reasonable in design and convenient to carry, the ultrasonic frequency, the strength, the duty ratio, the working hour span and the area of the output probe can all be adjusted and matched with data bases composed of different parameters combinations, different types of parameter setting can be arranged as required, probes in different sizes can be adopted as required, corresponding low-energy ultrasonic waves are transmitted to the area around the prosthesis, therefore, the osteolysis is prevented from appearing around the prosthesis, reconstruction of bone trabeculas around the prosthesis is promoted, the bone mineral density around the prosthesis is improved, the service life of the prosthesis is prolonged, the ultrasonic apparatus is suitable for different people, no use contraindication exists, no invasive intervention occurs to a user, and the ultrasonic apparatus is relatively safe.

The invention relates to the technical field of medical instruments, and provides an integrated dental implant. The integrated dental implant comprises a tooth root part which is integrally arranged at the lower part of the integrated dental implant and can be embedded into an alveolar bone; an intra-gingival part which is integrally arranged at the top of the tooth root part, wherein the intra-gingival part can be embedded in the gingiva covering the alveolar bone;and a dental crown integral part, wherein the dental crown integral part,and the abutment of the intragingival part are designedinto a whole; the lower part of the tooth root part is provided with a threaded part combined with the alveolar bone, and a bone trabecula part is arranged between the threaded part and the intragingival part. The integrated dental implant has the beneficial effects that the contact area between the bone trabecula part and normal sclerotin can be increased through the pores in the surface so thatthe growth of bone cells is ensured, the clinical osseointegration rate is increased, the osseointegration process is shortened, and the implant is more stable.

The invention relates to the technical field of medical instruments, in particular to a medical tantalum metal bone trabecula material prepared through a chemical vapor deposition method and a preparation method of the medical tantalum metal bone trabecula material. The preparation method specifically comprises the following process that tantalum pentachloride gas and high-purity hydrogen react for 6-9 h under the vacuum environment of 900 DEG C-1,050 DEG C, a tantalum metal layer obtained through replacement is deposited on the surface of a matrix, and the matrix and the tantalum metal layerdeposited on the surface of the matrix are the tantalum metal bone trabecula material; and the speed that the tantalum pentachloride gas is introduced into the vacuum environment ranges from 10,000 ml / min to 13,000 ml / min, the speed that the high-purity hydrogen is introduced into the vacuum environment ranges from 530 ml / min to 570 ml / min, and the vacuum degree of the vacuum environment is largerthan or equal to 4 Pa and is smaller than or equal to 13.3 Pa. Under cooperation of various reaction conditions, the preparation efficiency of the medical tantalum metal bone trabecula material is improved, and the tantalum metal bone trabecula material prepared through the preparation method is high in porosity, good in biocompatibility and good in friction coefficient, is highly similar to cancellous bones of human bodies and is a more ideal bone implant material.

An artificial socket bone used as an outer cover wholly or partially encapsulating an artificial dental root, wherein the artificial socket bone is formed in a substantially cylindrical tubular shape, with protrusions being formed through a plurality of cuts in the surface of the artificial socket bone, part or all of the protrusions being curved inwards and / or outwards of the artificial socket bone. Some of the cuts are through-holes, which have no protrusions, for letting through cells that differentiate into alveolar bone proper and bone trabeculae.

The invention discloses an interface fixing structure for metal bone trabeculae. The interface fixing structure for the metal bone trabeculae comprises at least three intersected metal bone trabecula supports (1) and a metal bone trabecula projection (2), and one end of the metal bone trabecula projection (2) is arranged at the intersection of the at least three intersected metal bone trabecula supports (1). By the aid of the metal bone trabecula projection which can penetrate into a bone to form a pile driving effect, a bone trabecula prosthesis can be steadily combined with a bone bed, a contact area of a bone trabecula surface and a synostosis surface is unaffected, porosity of the metal bone trabecula is unaffected as well, and bone ingrowth can be induced to the maximum extent so as to realize long-term biological fixation of the prosthesis.

The invention discloses a detachable pedicle screw. A screw body and a screw tail adopt a split type structure, micro holes are evenly formed in the screw body and the front end of the screw tail, and the axes of the micro holes are perpendicular to that of the screw body. The pedicle screw adopts the split type structure, namely, a spinning structure, a clamping structure, an insertion structure and the like, the screw body and the screw tail are made of magnesium alloys having advantages of degradability, biocompatibility and the like, meanwhile, the micro holes perpendicular to the axis of the screw body are formed in the screw body and the front end of the screw tail, so that bone trabeculae can be distributed along the micro holes, synchronous reconstruction of the bone trabeculae is allowed during fracture healing, the continuity of the bone trabeculae in vertebrae is recovered, dual healing of fracture cortex and spongiosa is realized, the structure and mechanical conduction features are effectively recovered, the internal fixation complication incidence can be significantly reduced, the fracture treatment effect can be improved, peripheral soft tissue and blood circulation can be effectively protected, the internal fixator related complication occurrence risk is reduced, and pain and economic burden caused by secondary major surgery on patients are avoided.

The invention relates to a vertebral prosthesis, which comprises wing plates, a vertebral body upper end, a vertebral body middle part and a vertebral body lower end. The vertebral body upper end is in direct contact with a bone surface, and the vertebral body upper end directly contacts and extracts the complete bone surface; the vertebral body lower end and the vertebral body upper end have thesame design concept; the vertebral body middle part is connected between the vertebral body upper end and the vertebral body lower end and comprises a bone trabecula structure and a solid structure; the solid structure is formed by printing by directly adopting a 3D printing technology to simulate the original cortical bone of a human body; and the wing plates comprise the upper wing plate and thelower wing plate. The upper wing plate is arranged on the side face of the vertebral body upper end. The lower wing plate is arranged on the side face of the vertebral body lower end; a first nail hole and a second nail hole are formed in the upper wing plate, and the upper wing plate, the first nail hole and the second nail hole form a separation blade structure; and the lower wing plate is alsoprovided with a first nail hole and a second nail hole, and the lower wing plate, the first nail hole and the second nail hole also form a separation blade structure.

The invention relates to the technical field of medical apparatus and instruments, and provides a thighbone far-end prosthesis capable of preserving epiphysis. The thighbone far-end prosthesis comprises a thighbone far-end prosthesis body and a myeloid needle sleeve, wherein the thighbone far-end prosthesis body and the myeloid needle sleeve are in taper fit. The thighbone far-end prosthesis bodyis provided with a lower end face; a lower end protrusion is arranged on the lower end face, and a third bone trabecula structure is arranged on the surface of the lower end protrusion; and the myeloid needle sleeve is provided with a solid inner wall, and a second bone trabecula structure is arranged on the surface of the solid inner wall. The beneficial effects lie in that the lower end protrusion is customized in size according to the medullary cavity of a patient and matched with the medullary cavity of the patient, rapid intraoperative positioning can be achieved, the postoperative prosthesis is prevented from deviating front and back, and the prosthesis is prevented from damaging the bone of the patient. The third bone trabecula structure is arranged on the surface of the lower end protrusion, so that the contact area between the prosthesis body and human bones is increased, the bone ingrowth places can be increased, and the prosthesis body is more stable and firmer and is not easy to dislocate.

The invention relates to application of a group of thio-matrine derivative and salts thereof to preparation of an anti-osteoporosis medicament. The structural general formula of the thio-matrine derivative is shown in the description, where X is a sulfur atom, and an R group is selected from a hydrogen atom, an alkyl group, halogen, nitryl and a cyano group. The group of compositions is proven by bioactivity tests to remarkably reduce the bone mass loss of an ovariectomized mouse, represented by increase of the number of bone trabeculae, the bone surface and bone volume ratio, the relative bone volume or bone volume fraction and the number of bone trabecula connections, and remarkably suppress differentiation of RAW264.7 cells and primary monocytes of the mouse to osteoclasts, and thus can be developed into an anti-osteoporosis medicament or used for preparing a reagent for researches on pathological mechanism of osteoporosis and evaluation of the curative effect of the anti-osteoporosis medicament.

The present invention relates to a design and manufacturing method of a surface structure of a parodontium-simulated dental implant. The design and manufacturing method comprises the following steps:1) a dental implant is divided into 2 layers and printing files are generated by using a 3D printing software; 2) an inner layer is a solid structure and an outer layer is a gradient hollow structurewith gradually increased porosity from inside to outside; 3) the porosity of an innermost layer of the hollow structure is 0 and the porosity of an outermost layer is 50-80%; 4) pores and interstitialtrabecula are trabecula-like structures; 5) printing and forming are conducted by using a laser cladding 3D printer; 6) the used material can be pure titanium, titanium alloy, zirconia or titanium-zirconium-based amorphous metal glass; and 8) the dental implant can be used as a dental implant product after being sterilized. The method can effectively improve osteogenesis performance of a surfaceof the dental implant, simulates a mechanical buffering effect of parodontium to a certain extent, reduces local stress concentration in a chewing functional state, obviously reduces occurrence and progress of inflammation around the dental implant through the complex bone interface structure of the dental implant, and improves long-term success rate of dental implant restoration.

A device for forming a cavity in a centrum comprises a cutting part and a control device, wherein the cutting part is used for cutting the centrum and the control device is used for controlling the cutting part to cut the centrum. The control device comprises a bearing part used for bearing the cutting part, and the end, adjacent to the cutting part, of the bearing part is provided with a bendable portion. The control device further comprises a manipulation assembly used for controlling the bearing part to bend, and the manipulation assembly is arranged to generate action force in the axial direction of the bearing part to control the bearing part to bend. The device can effectively avoid dangers caused by bilateral puncture in the prior art, the shape of the cavity is controllable, meanwhile, damage to bone tissue is reduced, and bone cement can permeate between bone trabeculae more effectively.

The invention discloses minocycline hydrochloride nano sustained-release gel as well as a preparation method and application thereof, and belongs to the technical field of medicines. The problem of low encapsulation efficiency of small-molecule hydrophilic medicines is solved by introducing a form of a novel complex formed by chelating minocycline hydrochloride, metal ions and a compound with a plurality of sulfate, sulfonate or phosphate functional groups. Prepared minocycline hydrochloride multiple emulsion nanoparticles are smooth, round, high in encapsulation efficiency and strong in drug loading capacity. A prepared minocycline hydrochloride multiple emulsion nanoparticle is dispersed in a temperature-sensitive gel matrix to construct a double-layer delivery system which has certain biological adhesion, is good in periodontal retention and is convenient for administration. According to the minocycline hydrochloride nano sustained-release gel as well as the preparation method and application thereof, while the positioning advantage of the gel is exerted, burst release of a medicine can be remarkably reduced, the medicine administration period can be prolonged, possibility is created for further periodontal pocket local medicine administration treatment of periodontitis, the nanoparticles can penetrate through alveolar bone trabecula and bottom connective tissue, distribution of the medicine at a focus position is enhanced, and the antibacterial effect of the medicine is remarkably improved.

The invention relates to the technical field of medical instruments, and provides a dental implant with an osteoinduction structure. The dental implant comprises a solid part, a bone trabecula part and a tantalum coating part; wherein an integrally-formed base platform part and a root part are arranged at the top of the solid part, the solid part is provided with a rough surface formed by spraying, irregular pore structures are formed on the rough surface, the bone trabecula part is arranged on the irregular pore structures, and the tantalum coating part is arranged on the bone trabecula partof the solid part through 3D printing; and three blade parts with a self-tapping function are arranged on the root part. The dental implant has the beneficial effects that the irregular pore structures are formed on the solid part, so that the contact area with normal sclerotin is extended; a porous bone trabecula structure is beneficial to new bone ingrowth, sufficient space is provided for vascular regeneration and new bone regeneration, and the later-period stability of the implant is guaranteed; and tantalum metal is sprayed to the implant, the osseointegration process is shortened due tothe good biocompatibility, and the clinical osseointegration rate is increased.

The invention provides an interventional conservative therapy method for ischemic necrosis of femoral heads. The scheme includes that focuses are magnified and locked under navigation effects of visual systems, interventional guide wires with the diameters of only 1 mm are pierced into femoral arteries and extend to affected parts, the blocked blood vessels are dredged, then thrombolysis, anticoagulation and angiectasis repair medicines are injected into the closed blood vessels, the blood circulation of the femoral heads and surrounding tissues of the femoral heads can be improved, repair of dead bones and regeneration of bone trabeculae can be promoted, and the optimal therapy purposes can be achieved. Compared with the traditional therapy, the interventional conservative therapy method has the advantages that the interventional conservative therapy method is high in therapy speed, and each integral therapy procedure can be completed in only about 30 minutes; patients can be recovered quickly, can act immediately after surgery, and can return normal life and work after being observed for 1-2 days; the patients hardly bleed in the therapy procedures, blood supply of the femoral heads can be effectively improved, and absorption of necrosis bones and formation of new bones can be promoted.

The invention discloses a personalized bone-imitating trabecularism metal gasket based on a 3D printing technology. The personalized bone-imitating trabecularism metal gasket based on the 3D printingtechnology comprises a metal bottom plate compatible with a human body, wherein an inner structural layer, a middle structural layer and an outer structural layer are sequentially arranged on the metal bottom plate through the 3D printing technology and are not limited to three antique trabecularism layers, and the porosity of the inner structural layer is smaller than that of the middle structural layer. Due to the fact that metal bottom plates with uniform specifications are manufactured in advance, fine adjustment is facilitated when the metal bottom plates need to be used; the requirementsof different patients can be met conveniently; the personalized bone-imitating trabecularism metal gasket based on the 3D printing technology can directly scan through a laser scanner to obtain fine-tuned graphs and sizes, measurement and drawing time is saved, and rapid modeling is facilitated; and models of the inner structural layer, the middle structural layer and the outer structural layer are preset in three-dimensional software, the thickness and the porosity can be adjusted, personalized construction can be quickly realized, and the requirements on operators are reduced.

The invention provides an easy-to-mount iliac wing filling block, and the filling block comprises a filling block body and a knocking rod adaptively connected with the filling block body; a knocking area is arranged on the filling block body, and at least one first knocking groove is formed in the knocking area; and one end of the knocking rod is provided with an insertion column which is in insertion fit with the first knocking groove. The filling block has the advantages that the structural design of the knocking area and the knocking groove in the knocking area is matched with the structural design of the knocking bar, so that normal bone ingrowth and soft tissue crawling are not affected while the bone trabecula structure on the surface of the filling block body is protected.

The invention is applicable to the technical field of medicines, and provides prunus humilis procyanidins, a preparation method and application thereof, and a medicine; the preparation method of the prunus humilis procyanidins comprises the following steps: preparing and depitting prunus humilis to obtain depitted prunus humilis; carrying out ultrasonic extraction on the prunus humilis and an ethanol aqueous solution at the temperature of 30-50 DEG C to obtain an extracting solution; and carrying out suction filtration on the extracting solution, and then carrying out vacuum concentration andfreeze-drying treatment to obtain the prunus humilis procyanidine. The active ingredients in the prunus humilis bunge are extracted and prepared into the freeze-dried powder, so that the biological activity of the prunus humilis bunge can be maintained, the prunus humilis is convenient to store and transport, and the prunus humilis freeze-dried powder has important significance in development of the prunus humilis industry and meeting of increasing large health requirements of people. In addition, the prunus humilis procyanidine has the effects of preventing osteoporosis, maintaining a bone structure, protecting the integrity of a bone trabecula microstructure, improving estrogen disorder caused by menopause, regulating and controlling intestinal flora metabolites of organisms and the like.

The invention relates to the technical field of medical prostheses, and provides a bone trabecula structure. The bone trabecula structure comprises a bone trabecula structure body, the bone trabeculastructure body is composed of a plurality of mutually-staggered trabeculae, and the mutually-staggered trabeculae form bone trabecula structure holes; a hole structure is arranged in each bone trabecula structure body, each hole structure comprises a plurality of side face holes and a plurality of transverse holes, and the multiple side face holes and the multiple transverse holes are mutually crossed; and part of the multiple side face holes are perpendicular to the axis of each bone trabecula structure body, and part of the multiple side face holes are obliquely arranged. The bone trabeculastructure has the beneficial effects that pores are designed in the transverse directions and the longitudinal directions of the trabeculae of the bone trabecula structure body, so that the strength of the bone trabecula structure is guaranteed, the intercommunity is improved, nutrients and other substances can be transported more smoothly, the metabolic site area is increased, the bone ingrowth progress is quicker, and the bone ingrowth effect is firmer.

The invention relates to a 3D printing individualized customized bionic micropore acetabulum mortise and tenon patch and a manufacturing method, the mortise and tenon patch is of a 3D printing solid structure, the upper edge and the lower edge of the inner side face are connected with one side edge of the upper surface and one side edge of the lower surface respectively to form a tenon structure embedded into the acetabulum bone defect position. The upper edge and the lower edge of the outer side surface are respectively connected with the other side edges of the upper surface and the lower surface to form an integral mortise and tenon patch structure in a surrounding manner; the lower surface is arc-shaped, and the radian of the lower surface is the same as that of an acetabular cup prosthesis; through the arrangement of the four forms of threaded holes, multi-angle fixation of the mortise and tenon patch can be guaranteed, the stability is guaranteed to the maximum extent, and sideslip or displacement is prevented. And through bone-like trabecular bionic micropores are formed in the mortise and tenon patch. The problems that in the acetabular bone defect reconstruction process in the prior art, the rotation center of a hip joint cannot be recovered easily, an implant and a bone defect form are not matched, bone ingrowth of the implant is poor, and initial and long-term stability is poor are solved.

The invention discloses a sacralization bone screw. An arc-shaped screw body is designed according to the original shape of a breast rib, so that the sacralization bone screw is fitted with the original shape of the breast rib. The screw body is manufactured into a bone trabecula lattice structure highly simulating a human skeleton through high-end technical equipment so as to induce bone ingrowth very good, and therefore, the screw and the bone are fused to form a unified integral skeleton. Both ends of the bone screw are respectively designed to be tips, and by such a design, two fracture surfaces of the broken bone can be conveniently set, and therefore, a better traction reduction and fixation effect is achieved. By reverse threads of 3-1mm below the tips at both ends, an implantation way during a surgery process can be changed into screwing in from complete driving in, and therefore, the surgery flexibility is greatly improved.

A device for forming a cavity in a centrum comprises a cutting part and a control device, wherein the cutting part is used for cutting the centrum and the control device is used for controlling the cutting part to cut the centrum. The control device comprises a bearing part used for bearing the cutting part, and the end, adjacent to the cutting part, of the bearing part is provided with a bendable portion. The control device further comprises a manipulation assembly used for controlling the bearing part to bend, and the manipulation assembly is arranged to generate action force in the axial direction of the bearing part to control the bearing part to bend. The device can effectively avoid dangers caused by bilateral puncture in the prior art, the shape of the cavity is controllable, meanwhile, damage to bone tissue is reduced, and bone cement can permeate between bone trabeculae more effectively.

The invention provides a method for measuring the through hole rate of a 3D printing titanium alloy bone trabecula structure oversleeve. According to characteristics of the bone trabecula structure oversleeve, the bone trabecula structure oversleeve is divided into 12 areas; a bone trabecula structure oversleeve theoretical model formed by a crystal structure bone trabecula or a bone trabecula facilitating bone growth is created, and graphs of surface and internal bone trabecula structure forms of the bone trabecula structure oversleeve theoretical model are obtained; the dental base acrylic resin powder is poured into the 3D printing titanium alloy bone trabecula structure oversleeve to obtain morphological graphs of the 3D printing titanium alloy bone trabecula structure oversleeve on the surface and the internal bone trabecula structure; clear images of bone trabecula structure morphological graphs on the surface and inside the 3D printing titanium alloy bone trabecula structure oversleeve are collected by utilizing the digital correlation technology; the surface and internal through hole rate of the 3D printing titanium alloy bone trabecula structure oversleeve is determined byadopting the comparison method. The method is advantaged in that the purpose is to accurately detect the through hole rate of the titanium alloy bone trabecula structure oversleeve printed by a 3D printer.

The invention relates to the technical field of medical instruments, and provides an individualized pelvic prosthesis. The individualized pelvic prosthesis comprises a solid part made of titanium alloy, a large aperture bone trabecula part made of titanium alloy, a small aperture bone trabecula part made of titanium alloy, a pterygoid lamina made of titanium alloy, and self tapping bone nails madeof titanium alloy, wherein the large aperture bone trabecula part made of titanium alloy comprises a first large aperture bone trabecula and a second large aperture bone trabecula; the small aperturebone trabecula part made of titanium alloy comprises a first small aperture bone trabecula and a second small aperture bone trabecula; multiple self tapping bone nails made of titanium alloy are arranged; and the installation position of the self tapping bone nails made of titanium alloy on the solid part made of titanium alloy corresponds to the bone position connected with the self tapping bonenails made of titanium alloy. The individualized pelvic prosthesis in the invention has the benefits that: the prosthesis is connected with the bone by adoption of ten bone nails; the bone nails aredivided into four groups; and the initial stability of the prosthesis is enhanced due to distributed and grouped distribution of the bone nails.

The invention discloses a method for constructing a trabecular bone model with a topological structure. The method comprises: first obtaining the required parameters of the trabecular bone model, and then generating a trabecular bone model carrier according to the required parameters, and creating a trabecular bone model carrier. The carrier is filled with a three-dimensional structure composed of hollow grid units. The hollow grid unit is composed of a metal trabecular bone support and an evacuated grid structure. There are at least three intersection points between the metal trabecular bone support and the evacuated grid structure; The thickness of each rod diameter in the trabecular model carrier generates a trabecular bone model. Adopting the technical scheme of the invention can construct a bone trabecular model that can meet the rigidity and strength requirements of different regions of parts at the same time, saving construction time.