56 results about "Bone block" patented technology

The utility model discloses a three -sided formula bone knife structure, include: connecting seat, joint, the joint fixed setting in the upper end of connecting seat, handle, the lower extreme of handle with the upper end of joint is detachably connected, three -sided formula cutter body, three -sided formula cutter body setting in the lower end of connecting seat. Through the application of the utility model, provide a three -sided formula bone knife structure for taking bone, especially applicable to the acquisition operation of double cortex ilium, it can be realized in one insertion process smoothly intercepts double cortex bone piece, shortens the operation time and reduces the trauma to the patient, can carry out multidirectional cutting in the narrow bone surface area through three -sided formula design, reduces the demand of repeatedly changing sword or using other turning cutter, further improves the operation efficiency.

The utility model belongs to the technical field of animal waste, and particularly relates to an animal waste harmless treatment system which comprises a frame, a drying device is arranged on the outer surface of the frame, the drying device comprises an electric heating wire, the electric heating wire is started to dry the waste, and a grinding device is arranged to grind the waste so as to grind the waste. The grinding motor drives the rotating rod to rotate, the rotating rod is rotationally connected with the grinding roller, rotation of the grinding roller is not affected while the grinding roller is driven to revolve, and the rotating gear fixedly installed on the grinding roller is meshed with the gear ring fixedly installed on the grinding frame to enable the grinding roller to rotate, so that the waste grinding efficiency can be improved, and the problems that in the prior art, bones are hard tissues, and the grinding efficiency is poor are solved. Large bone blocks and skeletons need to be completely degraded or decomposed for a long time, and the overall waste treatment efficiency is remarkably affected.

A bone transport device for transporting a bone segment is provided. The bone transport device includes an elongated shaft, a tubular housing surrounding the elongated shaft, a slider slidably mounted on the elongated shaft within the housing, an actuator configured to axially slide the slider along a sliding segment of the elongated shaft, and a first cable portion fixedly connected to a bone connector located outside the tubular housing. The first cable portion is also fixedly connected to the slider within the tubular housing, and the first cable portion is configured to transmit a sliding force to the bone connector as the slider moves along the sliding segment of the elongated shaft. The bone transport device is characterized in that the sliding segment is encircled by a solid portion of the tubular housing, and the first cable portion passes through a first hole in a tube wall of the tubular housing. The invention also provides a bone transport device characterized in that the slider is rotationally fixed relative to the tubular housing. The invention also provides a method of transporting a bone segment using the bone transport device.

The invention discloses a 3D printing method for an osteogenesis technology and a personalized box-type titanium plate, and relates to the field of manufacturing of medical instruments, and the 3D printing method specifically comprises the following steps: S1, obtaining and preprocessing three-dimensional data of a jaw bone of a patient; s2, three-dimensional reconstruction and virtual repair of an ideal contour before bone defect; s3, digitally designing the personalized box type titanium plate; s4, the personalized box type titanium plate is manufactured through 3D printing; and S5, clinical application in an operation. According to the 3D printing method for the osteogenesis technology and the personalized box-type titanium plate, the personalized box-type titanium plate can be passively placed in place in an operation, that is, the shape of the personalized box-type titanium plate is naturally matched with a bone defect area, and an ideal bone arch outline can be perfectly recovered after the personalized box-type titanium plate is placed. The dependence on the personal skill of doctors is reduced, the operation result has predictability and repeatability, and the fixing stability of the box-type titanium plate is far better than that of a bone block because the box-type titanium plate is directly fixed on the residual healthy basal bone through the screws.

The utility model discloses a spine endoscope minimally invasive surgery embracing type spike tooth bone grasping forceps, which comprises a first clamping jaw, a second clamping jaw, a fixing rod and a handle, the first clamping jaw is rotatably connected with the second clamping jaw, the second clamping jaw is fixedly arranged at one end of the fixing rod, the handle is arranged at the other end of the fixing rod, and the handle is fixedly connected with the first clamping jaw. The handle is used for controlling the rotating angle of the first clamping jaw relative to the second clamping jaw. According to the embracing type spike tooth bone grasping forceps for the spine endoscope minimally invasive surgery, the opening angle is increased through the first clamping jaw and the second clamping jaw, meanwhile, when a broken bone is grasped, the second clamping jaw is matched with the arched first clamping jaw, the first sharp teeth and the second sharp teeth can stretch into the side face of the broken bone to embrace the bone block, and the broken bone is convenient to grasp.

The head and neck bone block blocking and supporting type proximal femur intramedullary nail comprises a main nail body provided with a spiral blade hole and a locking hole, the locking hole is formed below the spiral blade hole, and the axis of the locking hole and the axis of the spiral blade hole form a double included angle; the double included angles comprise a backward angle based on the angle top and an inward angle based on the angle top; a threaded part used for being connected with a screw is arranged in the locking hole, and the threaded part is provided with a front thread allowing the screw to finely adjust the implanting direction within a small angle range and a rear thread in interference fit with the screw. The retention screw is provided with a screw body in threaded connection with the locking hole and a screw tail cap on the screw body, and when the screw body is tightened, the screw tail cap is located outside the head and neck bone block blocking and supporting type proximal femur intramedullary nail and is 5-7 mm away from the front threads. Through double fixation of the locking hole and the special screw, the defect of fixation of an original single spiral blade is overcome, and the fracture end can be effectively prevented from rotating and collapsing.

The application provides a femoral stem prosthesis for fixing a femoral greater trochanter bone block, relates to the technical field of femoral stem prostheses, and comprises a stem body which is positioned between a femur and a bone block through a group of upper fastening steel wires and multiple groups of lower fastening steel wires, the stem body comprising an upper stem part, a lower stem part and a neck part, the vertical outer contour side of the upper stem part being sequentially connected in a head-to-tail manner and comprising a top inclined contact surface, a reserved surface, an inclined expansion surface, a bottom inclined contact surface and a first adduction arc surface, the top inclined contact surface being connected with the neck part, and the bottom inclined contact surface being connected with the lower stem part; a thickening unit; the thickening unit is used for increasing a hip abduction muscle force arm and serving as a screw mounting base; and an extension part. The steel wire cerclage of the application provides uniform pressure and wrapping fixation of the tension band principle, the locking screw provides direct rigid anchoring and shear / torsion resistance; the strong proximal pulling force generated by the abduction muscle contraction can be effectively resisted, and the risk of proximal displacement of the bone block can be significantly reduced.

The invention relates to the technical field of medical instruments, in particular to a bone holder for cheekbone fracture reduction and a robot-assisted cheekbone fracture reduction method. The bone holder for reduction of the fracture of the cheekbone provided by the invention comprises a fixed end which is provided with at least one fixing hole and is used for being rigidly connected with a bone block through a fixing piece; one end of the connecting rod is fixedly connected with the fixed end, and the other end of the connecting rod is provided with a connecting structure used for being detachably connected with the tail end of the mechanical arm; and the plurality of registration points are distributed on the surfaces of the fixed end and the connecting rod and are used for performing intraoperative registration through a registration tool. According to the bone holder, the application scene is widened, a stable and reliable connection mode is provided, and the foundation of high-precision registration is laid.

This invention discloses a xenogeneic bone repair scaffold and its preparation method. The preparation method of the xenogeneic bone repair scaffold includes: a pretreatment step: obtaining bone blocks cut from animal bones, decellularizing, washing, and calcining to remove organic components to obtain a basic framework; a perfusion molding step: providing a mixed slurry of collagen, bioactive tricalcium phosphate, and a cross-linking agent, perfusing it into the basic framework under negative pressure vacuum, and freeze-drying to obtain a pre-formed composite xenogeneic bone; and a secondary cross-linking step: immersing the composite xenogeneic bone in a cross-linking agent for secondary cross-linking, and freeze-drying to obtain the xenogeneic bone repair scaffold. This xenogeneic bone repair scaffold completely removes immunogenic substances from the xenogeneic bone material while maintaining excellent water absorption and wetting properties to promote the regeneration of new bone and blood vessels.

The invention relates to the technical field of fracture reduction forceps, in particular to reduction forceps for metacarpal bone comminuted fracture, which comprise a forceps handle I and a forceps handle II, a rotating shaft is mounted at the intersection of the forceps handle I and the forceps handle II, limiting blocks are mounted on the inner sides of the upper ends of the forceps handle I and the forceps handle II, an elastic piece is mounted between the two limiting blocks, and the elastic piece is connected with the rotating shaft. A guide frame is installed on the first plier handle, a fixed plier head is installed at the lower end of the first plier handle, and an adjustable plier head is fixedly installed at the lower end of the second plier handle. The precise adjusting mechanism composed of the telescopic shaft, the ball head unit and the multiple tong head units is arranged in the adjustable tong head, so that a doctor can conduct synchronous or respective precise angle adjustment on the multiple tong head units according to spatial distribution of metacarpal bone comminuted fracture blocks; by means of the mechanical arm, multiple clamping points can be derived from one entry point, multiple bone blocks in different planes and at different angles can be synchronously clamped, the three-dimensional structure of the metacarpal bone is effectively recovered, and the mechanical arm is suitable for complex comminuted fractures.

The utility model discloses a clamp tool for a dental implant pull-out test, which comprises an upper clamp and a lower clamp, the upper clamp is connected with a dental implant and is used for fixing the dental implant, and the lower clamp is used for fixing an artificial dental bone block; the lower clamp comprises an upper cover body and a lower cover body which are detachably connected, the upper cover body and the lower cover body are combined in a covering mode, a containing cavity is formed in the upper cover body and the lower cover body, a first hole is formed in the upper cover body, and a clamping part is arranged on the end face of the lower cover body; the upper clamp comprises a bolt and a scanning rod. The end, away from the bolt, of the scanning rod is provided with a second section. An artificial tooth bone block is arranged in a containing cavity of a lower clamp, a scanning rod is inserted into a first hole and assembled at the upper end of a dental implant through a bolt, during testing, an upper clamping head of a universal testing machine clamps the scanning rod, and a lower clamping head of the universal testing machine clamps a clamping part for testing, so that the problem that in the prior art, the scanning rod is clamped by a clamping part is effectively solved; the technical problem that the artificial tooth bone block is easily broken due to the fact that the universal testing machine directly clamps the artificial tooth bone block is solved, and the testing efficiency is greatly improved.

The utility model relates to medical forceps technical field, concretely relates to an improved bone rong, including the bone rong formed by the two forceps body connected through hinge screw, still include: mounting screw, recess, the recess sets up in the mouth position of bone rong, and the mouth position occlusal surface is set into dentate; Two The forceps body is fixedly connected with elastic member through mounting screw. The jaw recess can be increased by widening the jaw of bone rong, so it can accommodate larger, more bone block, in addition, the blade on both sides of the jaw does not easily form interference when trimming large bone block; The jaw is toothed, the tooth tip contacts the bone surface when using, reduces the contact area, under the condition of equivalent force, the contact area reduces, and the pressure increases, so the bone rong can be more smoothly bitten into the bone surface and cut off the bone block, in other words, this design can save the effort, and prevents skidding when using.

The invention relates to the technical field of orthopedic surgical instruments, and discloses a protector for preventing posterior fork dead center avulsion fracture, the protector comprises an osteotomy guider and a chisel, the osteotomy guider is provided with a detachably matched fixing part, the fixing part is provided with a guide plate detachably connected with the fixing part, the guide plate is provided with a guide structure, and the chisel is provided with a guide groove. The detachable fixing component and the pre-bendable guide plate are matched with the chisel, a protective guide structure matched with the osteotomy guider is created, the guide inclined plane accurately limits the chisel track, posterior cruciate ligaments are prevented from being damaged, and the osteotomy guider is simple in structure, convenient to use and high in practicability. The guide plate is attached to the personalized bone surface of a patient through the deformation groove, stable assembly and no interference are guaranteed through the positioning groove and the receding groove, the cut-off groove can be flexibly excavated before and after bone block cutting, segmented chiseling and cutting are matched with the irregular bone surface to form a complete groove body, stress conduction is effectively blocked, and the rear fork stop point avulsion fracture is fundamentally prevented.

1. The name of the design product: clamping punch pliers. 2. The use of the design product: clamping punch pliers for bone block transplantation. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The invention discloses a micro-movement fracture internal fixation instrument, and relates to the technical field of medical instruments. The instrument comprises a first strip plate and a second strip plate which can be in sliding fit in the long axis direction of a bone. Each strip plate is locked to the corresponding bone block through a screw with a degradable coating, and the outer diameter of the coating is not smaller than the inner diameter of a plate hole in the initial stage of implantation, so that initial rigid fixation is achieved. The two long strip plates are further fixed to the bone blocks on the opposite sides through middle screws. After implantation, along with gradual degradation of the coating, a gap is generated between the screw and a plate hole, and rigid locking is relieved, so that the two plates can generate controllable relative micro motion along the long axis direction of the bone under physiological load. According to the design, the stability in the early stage of fracture healing is guaranteed, beneficial axial mechanical stimulation can be provided in the middle and later stages, callus formation and fracture healing are effectively promoted, and meanwhile the adverse effect of non-axial micro motion is avoided.

The application discloses an autogenous bone block grinding device for oral implantation and relates to the technical field of special instruments for oral implantation. The autogenous bone block grinding device comprises a grinding cylinder, the grinding cylinder comprises an outer cylinder and an inner cylinder, and a driving shaft rod is rotatably arranged in the inner cylinder. A driving assembly is arranged on the top sidewall of the driving shaft rod, the driving end of the driving assembly is arranged in the interlayer groove between the outer cylinder and the inner cylinder, the driving end of the driving assembly is fixedly provided with an anti-sloshing assembly, the anti-sloshing assembly can realize bidirectional clamping and limiting of the bone block in the grinding disc, the upper narrow and lower wide arc-shaped groove on the anti-sloshing limiting plate is matched, the irregular bone block shape is matched, the contact area is increased, the circumferential slip and the radial jumping of the bone block during grinding are effectively prevented, the dry friction between the bone block and the grinding structure is reduced, the local friction heating is reduced, the osteoblasts and active factors are prevented from being damaged, and the biological activity of the autogenous bone is maximally reserved.

The application relates to the technical field of biomedical materials, in particular to a calcium sulfate-based bionic bone repair material and a preparation method and application thereof. The preparation method comprises the following steps: stirring and mixing calcium sulfate dihydrate mixture into a collagen solution; performing suction filtration on the mixed solution to obtain bone paste, and performing shaping and drying to obtain a pre-shaped bone block; heating the pre-shaped bone block under vacuum conditions to obtain a dehydrated bone block; and finally rehydrating the dehydrated bone block and solidifying under the condition that the relative humidity is greater than or equal to 90% to obtain a bone repair material; the calcium sulfate dihydrate mixture is composed of calcium sulfate dihydrate and inorganic particles. The material is densified through suction filtration, collagen cross-linking and the conversion of calcium sulfate dihydrate into calcium sulfate hemihydrate are simultaneously completed through vacuum heating, and then the rehydration and high-humidity solidification are performed to obtain a bone repair material with an interpenetrating network structure. The material has excellent mechanical properties, a controllable degradation rate and is suitable for bone defect repair.

The invention discloses a modular surgical bone screw assembly having a threaded base portion and a screw head adapted to attach a variety of structures to bone. The features of the screw include a modular design for the assembly that separates the function of anchorage to the recipient bone to one of the modules of the device (threaded portion) from the other function of attaching another element (such as bone block, membrane, orthodontic wires, elastics etc) to a second module (the screw head). The design also allows the head to be exchanged after the implant has been placed.

This invention relates to the field of orthopedic medical device technology, specifically to a small bone fragment repositioning aid. The repositioning aid includes a C-shaped, curved clamping plate. A first thermoplastic block is disposed at the top center of the inner side of the clamping plate, and two second thermoplastic blocks are symmetrically disposed at the left and right ends of the inner side of the clamping plate. Fastening lines are fixedly provided at both ends of the inner side of the clamping plate, passing through the clamping plate from the inside out and connecting to a slider. A guide rod is provided at the top of the outer side of the clamping plate, and the slider is movably sleeved on the guide rod. The fastening lines, slider, and guide rod together constitute a synchronous fastening mechanism. By driving the slider to move axially along the guide rod, the fastening lines can be pulled synchronously, causing the two ends of the clamping plate to move towards the center, thereby causing the two second thermoplastic blocks to move closer together and apply a centripetal clamping force towards the first thermoplastic block. This invention has a compact structure, is flexible in operation, and is suitable for the repositioning and fixation of small bone fragments.

1. The name of the design product: side-cutting drill. 2. The use of the design product: side-cutting bone block cutting drill for bone block transplantation. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention discloses a multi-direction adjustable and controllable calcaneus osteotomy moving device and method. The multi-direction adjustable and controllable calcaneus osteotomy moving device comprises a first fixing part, a second fixing part and an adjusting mechanism. The first fixing piece is provided with a first guide fixing nail channel; the second fixing piece is provided with a second guide fixing nail channel; the adjusting mechanism is arranged between the first fixing piece and the second fixing piece and comprises a plurality of adjusting assemblies with the adjusting directions intersecting or staggered, and the adjusting assemblies are used for driving the second fixing piece to conduct position adjustment relative to the first fixing piece so that the osteotomy far-end bone block can controllably move in the multiple directions relative to the osteotomy near-end bone block. Independent, composite and controllable movement of a far-end bone block in a three-dimensional space in the calcaneus osteotomy is achieved, experience dependence and bare-handed operation in the operation are converted into accurate planning and controllable execution, and the certainty and standardization level of the operation is improved.

The application discloses a verification block structure and a verification system for orthopedic surgery. The verification block structure comprises a base and a bone block. The base has a bearing portion and a bottom portion corresponding to the bearing portion. The bone block is detachably fixed to the bearing portion of the base, and the shape or material of the bone block is determined according to the bone characteristics of a patient and / or a surgical method.

The utility model relates to medical auxiliary instrument technical field, concretely relates to a calcaneus sustentaculum tali guider, its characterized in that: including first guide needle, positioning module, second guide needle and guide module, first guide needle is positioned to the sustentaculum tali bone block through calcaneus cross angle gap and is inserted, positioning module is equipped with positioning channel in, positioning module is set on first guide needle through positioning channel, guide module is connected with positioning module through connecting rod, guide module is equipped with at least one with the same plane of positioning channel in guide channel, the included angle alpha is formed between guide channel and positioning channel, second guide needle is inserted from guide channel and can produce intersection convergence point with first guide needle. The utility model can accurately guide second guide needle to hit the sustentaculum tali bone block from the calcaneus lateral surface in the calcaneus operation, to reduce the fluoroscopy number in operation, and improve the operation efficiency, precision and safety.

The present application relates to the technical field of medical auxiliary diagnosis, in particular to a CBCT feature extraction method for alveolar bone bone density evaluation. The present application is based on the difference of absorption degradation significance of different sub-blocks, combines sub-blocks in alveolar bone blocks, generates different connection blocks, and selects lesion blocks; according to the boundary clarity degree of all lesion blocks in the alveolar bone blocks and the lesion degree difference of different sub-blocks in them, the lesion activity degree is obtained; according to the size and fluctuation degree of absorption degradation significance of sub-blocks of alveolar bone blocks in different preset directions, the bone density spatial dispersion degree is obtained; according to the lesion activity degree, the bone density spatial dispersion degree and the correlation degree of the two of all alveolar bone blocks in the scanning time window, the bone pathological risk degree is obtained. The present application improves the reliability of alveolar bone bone density evaluation by improving the analysis level of CBCT image from morphological observation to pathological function inference.

The invention discloses a demineralized bone matrix fiber as well as a preparation method and application thereof. The method comprises the following steps: firstly, cleaning and disinfecting natural bones separated out of a body, then cutting the natural bones into bone blocks, further degreasing the bone blocks, and cutting the bone blocks into fibers with the length of 1-100mm and the thickness of 0.2-1.4 mm; then placing the bone fibers obtained by cutting in an acidic demineralization solution for demineralization until the calcium content is 0-20%; the method comprises the following steps: demineralizing bone fibers, then reacting with the demineralized bone fibers by using an anionic surfactant for 0.5-3 hours, cleaning, then reacting for 12-18 hours by using a nonionic surfactant, completing two-stage decellularization, cleaning, and freeze-drying for preservation. During clinical use, the demineralized bone fibers which are kept in a freeze-drying manner are mixed with hydrated liquid or mixed with one of sodium carboxymethyl cellulose, gelatin, poloxamer and chitosan to form an ointment substance which is used as a bone defect repairing material.

The application discloses a reduction device for long bone comminuted fracture operation, and relates to the technical field of medical devices. The device comprises a middle segment positioning mechanism and two groups of two-side segment positioning mechanisms symmetrically arranged. The middle segment positioning mechanism comprises a positioning tube provided with a wedge-shaped convex rib; the two-side segment positioning mechanism comprises a frame body, an inner movable block capable of adjusting the position in the axial direction and an outer flexible sheet, and realizes fine adjustment of the position through a lead screw and a bevel gear transmission group. The proximal ends of the two groups of frame bodies are designed in a step-shaped overlapping mode and are jointly sleeved outside the positioning tube. Through a one-way meshing structure formed by a rack in the mounting block and the wedge-shaped convex rib, and by using matched guide inclined surfaces and limiting stop surfaces, the two groups of frame bodies are realized to slide inwardly and be automatically locked. The application realizes the logic of central anchoring and two-side butt, ensures the tightness and in-operation stability of the joint between the side bone block and the middle bone block, supports vertical sliding and separation, and greatly facilitates post-operation removal.

The utility model provides a high-stability bone extension bridging combined internal fixing device, and belongs to the technical field of bone extension. Comprising a first bone block and a second bone block, the plurality of fixing blocks are respectively arranged on the first bone block and the second bone block; the plurality of guide rods are arranged on the fixed block and are symmetrically arranged at the two ends of the fixed block; the fixing screw is arranged on the fixing block and is used for fixing the fixing block and a bone block; the fixing screw is provided with a screw body and a nut. By arranging the fixing screw, the fine threads at the bottom are beneficial to entering relatively loose sclerotin initially, the contact area and anchoring force with bone tissue can be increased along with the gradual thickening of the threads, and compared with a traditional single-thread screw, the fixing stability in an osteoporotic bone block can be effectively improved; and the loosening risk caused by insufficient friction force is reduced.

The application provides a method and device for measuring the angle between two bone blocks forming a joint, which can be used for real-time measurement of the flexion, valgus and varus angles of a knee joint in computer-aided knee joint replacement. The conversion relationship between the coordinate system of a 3D virtual bone model and the coordinate system of the markers collected from the actual bone surface is established by using an optical tracking system, and the angles are calculated by using the marker points extracted from the model, which are selected from the hip joint center H, the femoral knee joint center FK, the lateral epicondyle LE, the medial epicondyle ME, the tibial knee joint center TK, the tibial tuberosity TB and the ankle joint center AK. The method comprises the following steps: calculating the femoral mechanical axis direction vector and the tibial mechanical axis direction vector; calculating the flexion angle when the knee joint moves around the transverse axis on the sagittal plane. The valgus and varus angles can be determined by projecting the femoral axis and the tibial axis on the coronal plane Pc or the transverse plane. The application also provides a surgical robot system, a storage medium and a measuring device.

The invention discloses a surface middle personalized PEEK (Polyether Ether Ketone) implant prosthesis and a design method thereof. The prosthesis is used for maxillary bone block fixing and face middle shape repairing after orthognathic Lefort I-type osteotomy, and polyether-ether-ketone is adopted as the material; the thickness and shape of the outer side surface of the prosthesis are obtained by guiding the ideal side appearance contour and the three-dimensional shape of the middle part of the surface; the prosthesis is composed of an inner wing, an outer wing, an isthmus part and a lower edge, wherein the inner wing part extends to the area beside the nose; the outer wing part is distributed along the zygomatic maxillary strut; the distance between the lower edge and the upper tooth root tip is not less than 5mm; the isthmus needs to avoid the suborbital foramen. Compared with a traditional titanium fixing plate, the elastic modulus of polyether-ether-ketone is close to that of the jaw bone, and the stress shielding effect can be reduced. The personalized polyetheretherketone prosthesis is designed according to the shape of the bone section end of the maxilla after the operation, the bone blocks of the upper section and the lower section of the maxilla are integrally fixed, errors generated by bending a titanium plate in the operation are avoided, and the accuracy and stability of bone block movement and positioning are ensured.