9 results about "Structure bone" patented technology

The invention discloses a PEEK bone plate for closing cranium in microvascular decompression and application of the PEEK bone plate. The bone plate comprises a bone plate body which is in an oval shape, and the outline of the bone plate body is matched with the shape of a bone window formed in a sinus sigmoideus posterior approach microvascular decompression; the two faces of the bone plate body are of an asymmetric curved surface structure, the curvature radius of an outer plate face in the bone plate body is larger than that of an inner plate face in the bone plate body, the outer plate face is a gentle arc face, and the inner plate face is an arched face with a concave spherical face. The thickness of the bone plate body is gradually reduced from the periphery to the center; the bone plate body is used for being attached to a bone window formed by sinus sigmoideus posterior approach microvascular decompression. The wings extend outwards from the edge of the outer plate face of the bone plate body, and the at least two wings are in a thin plate shape and distributed in the circumferential direction of the bone plate body at intervals. A fixing structure used for containing a fixing piece is arranged on the wing, the wing is used for fixing the PEEK bone plate for cranial closure in the microvascular decompression surgery to the periphery of a bone window, and the bone plate fundamentally reduces operative complications and improves postoperative evaluation.

The utility model relates to the technical field of bone conduction product testing, in particular to a bone conduction product detection device which comprises a base, the base is of a concave structure, and a detachable upper cover is installed on the top face of the base. A bone position structure is arranged on the inner bottom surface of the base, and a bone conduction signal collector is mounted in the bone position structure; a balance weight mechanism is arranged in the base and comprises a balance weight cantilever, a tooth-shaped protruding structure is arranged at the position, over the bone position structure, of the bottom of the balance weight cantilever and used for climbing and pulling an elastic rubber band, and a height adjusting assembly vertically and fixedly installed on the inner bottom face of the base is hinged to one end of the balance weight cantilever. A limiting base is fixedly arranged at the end, away from the height adjusting assembly, of the top face of the balance weight cantilever, and a balance weight is installed in the limiting base. According to the utility model, the transmission path of sound leakage can be structurally blocked through the matching arrangement of the upper cover and the base, and the sound leakage problem during the testing of bone conduction hearing-aid products is fundamentally solved.

This invention discloses a locking bone plate, its preparation equipment, and a preparation method. The locking bone plate includes a bone plate body, a multi-directional micro-motion locking component, a gradient bioactive coating, a stress buffer structure, and a bone-inducing positioning component. The surface of the bone plate body has an anatomically conforming curved surface, with locking holes and micro-motion holes arranged alternately along its length, and a stress buffer structure in the middle. The multi-directional micro-motion locking component is assembled in the micro-motion holes, enabling multi-directional angle adjustment and axial micro-motion of the locking screws. The gradient bioactive coating fully covers the surface of the bone plate body and the walls of each hole, employing a three-layer structure. The bone-inducing positioning component is located on the bone side of the bone plate body that conforms to the bone, used to assist fracture reduction and induce bone cell growth. This invention achieves an organic combination of rigid fixation and multi-directional micro-motion, enhancing bioactivity and bone integration capabilities. It can adapt to complex fracture morphologies, reduce stress shielding, accelerate bone healing, and is safe to use and easy to assemble, possessing extremely high clinical application value.

The present invention discloses a type I collagen fibril with highly bone-mimicking mineralization and a preparation method thereof. The preparation method is to dissolve collagen in an acid solution to prepare a collagen acid solution, and then successively add a calcium salt solution and a phosphate solution dropwise into the collagen acid solution for thorough mixing, with continuous stirring and a certain temperature condition throughout the process. Then, under the condition of maintaining stirring, the pH is adjusted, and then the stirring is stopped and the mixture is allowed to stand. The precipitated part is separated, washed, and dried to obtain a type I collagen fibril with highly bone-mimicking mineralization. This preparation method realizes uniform, continuous, and sufficient mineralization both inside and on the outer surface of the collagen fibril, achieving a high degree of biomimicry of the basic unit of natural bone tissue, namely its secondary microstructure (bone-mineralized collagen fibril). The collagen fibril prepared by this preparation method can provide a simulated three-dimensional scaffold microenvironment for osteoblasts and supply calcium ions and phosphate ions to promote bone regeneration and repair.

The invention relates to the field of hip joint bone tumor replacement, in particular to an articular surface retaining type extendable proximal femur tumor prosthesis which comprises an upper femur section, a medullary cavity extension handle and an adjusting assembly, the upper femur section is used for being connected to the proximal femur, the medullary cavity extension handle is used for being connected to a femur body, and the adjusting assembly is connected between the upper femur section and the medullary cavity extension handle and can adjust the distance between the upper femur section and the medullary cavity extension handle. The adjusting assembly comprises an adjusting shaft, a locking pin, a driving shaft, a fixing nut and the like. The thighbone upper section comprises a working section, an ox horn, a fixing steel plate and a fixing nail, and a bone trabecula layer structure is arranged on part of the surface; the medullary cavity extension handle is provided with a bone filling area, a stand column and a spring column are arranged in the bone filling area, and a bone trabecula sleeve is sleeved outside the bone filling area. According to the femoral prosthesis, the technical effects that the femoral length can be effectively adjusted, the femoral prosthesis can better adapt to the physical condition of the patient, bone growth and prosthesis fixation are promoted through the design of the bone trabecula layer structure, the bone filling area and the like, and the treatment effect and the rehabilitation quality of the patient are improved are achieved.

The invention discloses a preparation method and application of a bone metastatic tumor organoid model, and belongs to the technical field of biology. The preparation method comprises the following steps: selecting an epithelial tumor cell line as a seed cell; preparing a natural structure bone matrix scaffold material; the prepared bone matrix scaffold material is subjected to pore diameter measurement, a scaffold with qualified pore diameter groups is reserved, an unqualified scaffold is eliminated, and the optimized scaffold material is soaked in gel to be attached; and putting the qualified bone matrix scaffold material into a culture container, uniformly inoculating the epithelium-derived tumor cell suspension on the surface of the bone matrix scaffold material, and carrying out static culture for 2-3 weeks to generate the bone metastatic tumor organoid model. The bone metastatic tumor organoid model prepared by the invention is applied to physical and drug therapy experiments and research on molecular mechanisms of bone metastasis.

The application discloses a kind of for thoracolumbar fracture front and rear road's minimally invasive bone cement device and use method, and the application belongs to medical equipment technical field, comprising: puncture guiding mechanism, bone cement mechanism, including passage dilator, the passage dilator is detachably installed with the sheet mechanism in, the bottom of sheet body is arc structure;Bone cement injection mechanism.The application solves the risk of bone cement leakage by setting bone cement bag, and then reduces the risk of bone cement leakage to the spinal canal or paravertebral tissue, so as to avoid nerve damage, pulmonary embolism and other serious complications.The specific shape can be formed in the fractured vertebral body by the setting of the sheet mechanism, the uniform distribution of bone cement in the vertebral body is ensured by introducing bone cement distribution control mechanism, the stability of fractured vertebral body is enhanced, and the treatment effect is improved.Meanwhile, the effective recovery of the height of severely compressed fractured vertebral body is realized, and the postoperative physiological curvature and function of the patient's spine are improved.

The utility model relates to a structure of a bone nail. The bone nail comprises a setting piece, a tip part, a thread part, a fixing piece, a fixing surface, a reinforcing part, at least one divergent part and a butt joint part, when a user wants to fill the bone meal on the gum, a bone sheet can be utilized and placed on the gum to be filled with the bone meal, then the bone nail penetrates through the bone sheet from the thread part and then enters the gum to be mutually fixed, at the moment, the fixing face on the fixing piece abuts against one side face of the bone sheet in a large-area mode, and therefore the bone meal can be filled in the gum. The bone sheet can achieve the best fixing effect under the condition that the bone sheet is not cracked, separation is avoided, and the fastening force can achieve the best state after bone meal is placed between the bone sheet and the gum.

The invention provides a bullet type ankle joint tibia support assembly and an ankle joint prosthesis, and relates to the technical field of medical instruments. The tibia support assembly comprises a tibia support body, a keel, a connecting wall and a tibia liner locking structure. A first 3D printing porous structure is arranged on each of the bone joint top plane and the bone joint side surface; a second 3D printing porous structure is arranged on the surface of the keel for bone ingrowth; a plurality of inverted-cone-shaped bone grafting grooves are formed in the top of the keel; the front and rear ends of the connecting wall are of arrowhead structures, so that the tibia support can be conveniently driven in and taken out; the connecting wall is provided with a porous window, and the porous window is provided with a third 3D printing porous structure and penetrates through the thickness direction of the connecting wall for bone ingrowth; the tibia liner locking structure comprises a liner containing groove which is used for rapidly assembling the tibia liner. The mounting efficiency is improved; according to the scheme, the smoothness of inserting the tibia support prosthesis assembly into the tibia is improved, meanwhile, bone ingrowth can be fully achieved through the bone section of the prosthesis after installation, and long-term stability of the prosthesis and the bone is improved.