309 results about "Bone cement" patented technology

The invention discloses bone cement for orthopedic repair and a preparation method thereof, and relates to the technical field of bone cement. The bone cement for orthopedic repair comprises solid-phase powder and a liquid-phase component, the solid-phase powder comprises the following components in parts by weight: 55-65 parts of composite calcium phosphate, 10-15 parts of bioactive glass, 2-3 parts of a developing agent, 1-2 parts of hydroxyapatite, 8-12 parts of a modified toughening agent and 2-3 parts of nano cellulose fibers; the liquid phase component is prepared from the following components in parts by weight: 40 to 50 parts of a sodium alginate solution, 10 to 20 parts of methacrylated gelatin, 0.5 to 1 part of transglutaminase, 30 to 60 parts of a citric acid buffer solution and 1 to 2 parts of an antibacterial agent. The preparation method comprises the following steps: reacting pentaerythritol with 12-oxododecanoic acid to obtain an intermediate 1, and reacting the intermediate 1 with dopamine to prepare the modified toughening agent. The bone cement for orthopedic repair prepared by the invention has good mechanical, self-repairing and antibacterial properties.

This invention relates to a treatment device suitable for combined operative procedure of vertebroplasty and pediculoplasty. A treatment device includes a cylindrical driver capable of driving a screw into bone, an inner sleeve capable of being inserted into the driver, and a guide pin capable of being inserted into the inner sleeve, and is configured as follows. The screw includes on an outer wall (outer circumference) a thread that can tap into bone or cement, and a through hole that allows the inner sleeve to pass from a head to a tip. The driver can fit onto the head of the screw and when moved along the central axis and be joined to the screw, so as to transmit torque about the central axis to the screw. The inner sleeve includes a notch which protrudes, when the inner sleeve is inserted from the distal end of the driver in a state in which the screw and the driver are joined together, protrudes more proximally than a tip of the screw, preventing removal of the screw.

The invention discloses a bone cement composition and application thereof, and relates to the technical field of bone cement. The bone cement composition comprises a solid phase component and a liquid phase component, wherein the solid phase component comprises 60-75 parts of composite calcium phosphate, 10-20 parts of strontium glass powder, 8-12 parts of a reinforcing agent and 3-7 parts of a solidification reaction regulator; the liquid phase component comprises 20-30 parts of a phosphate buffer solution, 3-8 parts of a sodium citrate solution, 5-15 parts of an anti-inflammatory agent and 1-5 parts of a hyaluronic acid solution. The preparation method comprises the following steps: reacting 1, 10-phenanthrene-2, 9-dicarboxylic acid with 2-aminomethyl furan to obtain an intermediate 1, and reacting the intermediate 1 with poly (ethylene glycol) maleimide to prepare the reinforcing agent. The prepared bone cement composition has good mechanical properties, self-repairing performance and anti-inflammatory performance, and has a good application prospect in the field of bone repairing.

The invention provides a femoral stem prosthesis. The femoral stem prosthesis comprises a femoral stem, an expansion component and a sleeve. The femoral stem is composed of an upper stem body and a replaceable lower stem body, and threads are arranged in the femoral stem. The expansion part is located in the upper handle body and comprises a screw, a rotating disc and a multi-layer pushing structure. The screws are connected with the upper and lower handle bodies through threads; and the turntable is in threaded engagement with the screw and can drive the first pushing part along the first guide rail during rotation. Ratchets are arranged in the rail component and meshed with the pawls of the second pushing part, and an open hole is formed in the side of the second pushing part. And the sleeve is linked with the expansion component through the fifth pushing part, the fourth pushing part and the third pushing part. During implantation, the second pushing part outwards pushes the sleeve to be attached to the wall of the medullary cavity, the internal pushing structure acts successively under the counter-acting force, and finally the first pushing part is separated from the second pushing part. Then bone cement is injected through a sleeve micropore, and the stability of the prosthesis is enhanced. By means of the design, intraoperative adaptation and stable filling are achieved.

The utility model discloses a bone cement monomer equalizer with a small structure, which comprises a shell, an equalizer arranged in the shell, a piston sleeve movably arranged in the equalizer, a liquid outlet hole formed in the center of the bottom of the piston sleeve, and a rubber plug movably clamped in the liquid outlet hole, a breaking and filtering assembly which is provided with an ampoule bottle and is not communicated with the external environment is vertically arranged in the piston sleeve in a communicating mode, four liquid collecting pipes are evenly distributed on the bottom wall of the equalizer, the four liquid collecting pipes are all communicated with the equalizer, pistons are movably arranged in the liquid collecting pipes in a sealed mode, drainage pipes are arranged in the pistons, and the drainage pipes are communicated with the liquid collecting pipes. The drainage tube penetrates through the liquid collecting tube and the shell and then extends outwards, a one-way Luer taper is arranged on the drainage tube, and the flow direction of the one-way Luer taper is from the outside to the drainage tube. The utility model has the advantages that the structure is small and exquisite, the production can be reduced, and the production and the use are convenient.

A bone insert includes a cap having a convex top surface, an elongated stem, and a barrier between the cap and the stem. The stem of the bone insert is inserted into a hole formed in a host bone until the barrier is pressed against the exposed bone. The bone implant can be placed against a small focus contact point on the cap. Liquid cement can be injected into a space volume between the host bone and a bone implant. The cap can be made of a material and / or have surface features that create a strong bond with the cement when the liquid cement cures. The stem can be made of a material and / or have bone ingrowth surface features that create a strong bond with the bone.

The application discloses a mold for manufacturing a shoulder joint spacer and a preparation method thereof, belongs to the technical field of shoulder joint spacer preparation, and solves the problems of uneven distribution of medicine application grooves and the inability to flexibly adjust the size, length and the like according to requirements, and comprises a lower mold box, an upper mold box, an intramedullary bone cement silica gel forming adjusting mold and a ball head forming adjusting mold which are sleeved in the lower mold box and the upper mold box, a pouring gate which is arranged on the lower mold box and the upper mold box, a plugging plug which is arranged in the pouring gate, a first positioning support column and a second positioning support column which are arranged in the lower mold box, a third positioning support column and a fourth positioning support column which are arranged in the upper mold box, and a metal support rod which is arranged on the axial center lines of the intramedullary bone cement silica gel forming adjusting mold and the ball head forming adjusting mold; and the intramedullary bone cement silica gel forming adjusting mold and the ball head forming adjusting mold are uniformly provided with protruding portions.

The application discloses a bone cement for orthopedic repair and a preparation method thereof, and relates to the technical field of bone cement.The bone cement for orthopedic repair comprises solid-phase powder and liquid-phase components; the solid-phase powder comprises the following components in parts by weight: 55-65 parts of composite calcium phosphate salt, 10-15 parts of bioactive glass, 2-3 parts of developing agent, 1-2 parts of hydroxyapatite, 8-12 parts of modified toughening agent and 2-3 parts of nanocellulose fiber; and the liquid-phase components comprise the following components in parts by weight: 40-50 parts of sodium alginate solution, 10-20 parts of methacrylated gelatin, 0.5-1 part of transglutaminase, 30-60 parts of citric acid buffer and 1-2 parts of antibacterial agent. The intermediate 1 is obtained by the reaction of pentaerythritol and 12-oxododecanoic acid, and the modified toughening agent is prepared by the reaction of the intermediate 1 and dopamine. The bone cement for orthopedic repair prepared by the application has good mechanical properties, self-repairing performance and antibacterial performance.

The invention relates to the technical field of preparation of bone cement, and particularly discloses a preparation method of a photo-thermal response type gold nanorod-bone cement composite material. The method comprises the following steps: synthesizing a gold seed solution; constructing a growth solution; controlling the growth of the nanorod; gradient centrifugal purification; carrying out surface ligand exchange (sulfydryl-PEG); preparing a bone cement composite material; curing and forming; gold nanorods (GNRs) are uniformly embedded into a polymethyl methacrylate (PMMA) bone cement matrix, so that the problems that free nanorods are easy to migrate and poor in bone targeting are solved. The local temperature can be accurately controlled, and damage to surrounding tissues is avoided. According to the invention, immunogen cell death (ICD) can be effectively induced, and anti-tumor immune response can be activated. According to the invention, enough mechanical support can be provided, and the stability after implantation is ensured.

This invention discloses a method for preparing and applying a shell-core composite flexible biomaterial. The flexible biomaterial consists of an outer PMMA electrospun layer, a middle PTFF or PE layer, and a core PEG hydrogel; both the PMMA electrospun layer and the middle layer are porous. This flexible material is soft and elastic, exhibiting good film-forming and osteogenic induction effects. Animal experiments have confirmed that, compared to traditional bone cement, the flexible composite bone cement-induced biofilm shows an increase in CD31-positive cells (representing angiogenesis) and M2 macrophages (representing tissue repair), exhibiting better film-forming properties. It is a promising composite biomaterial that can be widely applied in the treatment of soft tissue defects, bone defects, and bone infections, achieving better therapeutic effects.

An ultrasonically vibrating surgical tool for removing cement (7) in artificial joint revision surgery has an ultrasonic vibration source operationally coupled to a working tip (5) that acts on the cement (7) in the lumen (8) of a bone such as a femur (1). When acting on the cement (7), the tool vibrates at substantially a single resonant frequency. If the working tip (5) comes into contact with a hard material such as the bone wall (6) of the femur (1), additional supplemental vibrations are generated at other frequencies. The tool is equipped with a microphone or other vibration detector to pick up these supplemental vibrations, which may be in the audible or ultrasonic range. If supplemental vibrations are detected at a frequency characteristic of contact between the working tip (5) and bone, the user of the tool is warned and the operation of the tool is interrupted.

Disclosed are a metal inner core, a placeholder and a preparation method for a hip joint bone cement placeholder. By designing the metal inner core including a frame body and a supporting portion inside the hip joint bone cement placeholder, the strength of the placeholder is enhanced; due to the fact that the metal inner core is hollow, the antibiotic bone cement can fill the inner portion of the metal inner core, the content of antibiotics in the placeholder cannot be affected, and infection is effectively controlled; the hollowed-out structure endows the placeholder with lighter weight and stronger structural strength, and meanwhile, the material cost is effectively reduced; and according to the preparation method of the hip joint bone cement placeholder, the size design of the placeholder and the metal inner core is carried out, so that the joint matching degree between the placeholder and the patient is high.

The invention discloses a method for constructing a lumbar spinal stenosis animal model, which comprises the following steps of: fixing an experimental rabbit at a prone position, and then forming a 2-3cm incision in the back side of the waist along the longitudinal direction so as to completely expose an intervertebral plate window between a first lumbar vertebra and a second lumbar vertebra; a disposable venous indwelling needle is used for puncturing the ligamentum flavum at the interlaminal window and then puncturing the disposable venous indwelling needle into the spinal canal, and then a metal needle core of the venous indwelling needle is pulled out, so that the soft catheter part of the venous indwelling needle is indwelled in the spinal canal; uniformly mixing PMMA bone cement powder and liquid to prepare fluid bone cement, extracting the bone cement by using an injector, slowly injecting the bone cement into the spinal canal, and removing the soft catheter after injection is completed; the injected bone cement is adhered to the inner wall of the spinal canal after being solidified, so that the inner diameter and the volume of the spinal canal are reduced in physical space, compression on spinal nerves is formed, and the animal model with lumbar spinal stenosis is obtained. The problem that in the preparation process of an animal model, nerves are prone to being damaged, and research test requirements cannot be met is solved.

The invention relates to a bone cement mixing device applied to biomedicine, which comprises a container, an upper cover, a rocker arm, a handle, a coupler and a stirring blade, and further comprises a bull gear, a pinion and an air bag assembly, the large gear and the small gear form a rotating extrusion mechanism, the air bag assembly is composed of a plurality of adjusting air bag units, and the rotating extrusion mechanism sequentially extrudes / releases the adjusting air bag units so that the sizes of the adjusting air bag units can be reduced or elastically reset. Therefore, after the adjusting air bag unit sucks air in the bone cement in the container into the adjusting air bag unit, the air is extruded out of the bone cement mixing device applied to the biomedicine through the exhaust flow channel.

This application provides a method, system, device, and computer-readable storage medium for planning the healing of spinal compression fractures based on multimodal three-dimensional medical images. The method includes: acquiring spinal CT and MR images of the patient; identifying and segmenting the spinal CT and MR images to obtain CT and MR images of the fractured vertebral body at the site of the compression fracture; inputting the CT and MR images of the fractured vertebral body into a preset bone cement anti-leakage planning model to output a bone cement injection anti-leakage planning scheme; wherein the bone cement injection anti-leakage planning scheme includes at least: the viscosity of the bone cement, the injection volume, the injection location, the injection timing, and the injection rate. According to the embodiments of this application, bone cement injection anti-leakage planning can be performed quickly and accurately.

The invention discloses a bone cement filling tool after spinal focus excision, and particularly relates to the technical field of medical instruments, the bone cement filling tool comprises a filling tube and a filling piece, one end of the filling tube is fixedly connected with a fixing sleeve, the inner side of the filling tube is provided with a double-type pushing and pressing assembly, and the double-type pushing and pressing assembly comprises a spiral push rod slidably connected to the inner side of the filling tube; the spiral push rod is in threaded connection with the fixing sleeve, one end of the spiral push rod is fixedly connected with a rotating handle, the inner side of the spiral push rod is slidably connected with a pressing push rod, the bottom end of the pressing push rod is fixedly connected with a piston, and the piston is slidably connected to the inner wall of the filling pipe. By arranging the double-type pushing and pressing assembly, when bone cement is injected, the piston pushing modes can be flexibly switched, the two pushing modes have the characteristics of seamless switching and convenient use, the adaptive capacity and high universality are greatly improved, and various use requirements in actual use can be met.

The utility model discloses a bone cement injection device and vacuum mixing deaeration device relates to medical instrument technical field, including mixing deaeration subassembly and injection subassembly, mixing deaeration subassembly includes barrel body, first seal cover and second seal cover, first seal cover and second seal cover detachable screw joint at the both ends of barrel body, the first sealing cover is provided with an air hole communicated with the inner cavity of the cylinder body. The injection assembly comprises a cylinder body, a piston and a screw rod, the piston slides in the inner cavity, and the screw rod is rotated to enable the piston to move so as to extrude materials outside. The vacuum mixing and defoaming device is provided with a rotating disc, the rotating disc is in vacuum, and the mixing and defoaming assembly is placed in a bin on the rotating disc to conduct mixing and defoaming procedures. After defoaming is completed, the first sealing cover and the second sealing cover are separated from the cylinder body, the piston and the screw rod are installed to form the injection assembly, the materials stay in the cylinder body after defoaming is completed, the materials can be injected by directly installing the piston and the screw rod, it is guaranteed that the materials are uniform and free of bubbles during injection, and the strength and stability of the bone cement are improved.

The invention provides an individualized tibia defect repairing type knee joint prosthesis, and belongs to the technical field of orthopedic implants. The device is formed by assembling a femoral condyle, a femoral bone marrow needle, a plateau pad, a tibia plateau, a restoration body and a tibia bone marrow needle. Wherein the tibia platform and the restoration body are matched through metal-metal threads and are assisted by bone cement to achieve anti-rotation locking, the restoration body adopts a 3D printing individualized bone trabecula structure and is compounded with an HA coating to promote bone ingrowth, the tibia bone marrow needle and the platform are connected through a standard taper connector, inventory and individualization compatibility is achieved, and the bone marrow needle and the platform are connected through a standard taper connector. The defects that an existing prosthesis is large in bone mass loss, unattractive in reconstruction, free of bone ingrowth function, high in processing cost and the like are overcome, and the postoperative function of a tibia defect patient and the long-term stability of the prosthesis can be remarkably improved.

The invention discloses a tibia unicompartmental prosthesis, a femur unicompartmental prosthesis and a knee joint unicompartmental prosthesis component, the tibia unicompartmental prosthesis comprises a first mounting surface, and the first mounting surface is used for being mounted to a tibia osteotomy surface; the first mounting surface is provided with a first bone cement area and a first porous area; the first bone cement area is used for being fixed to the front side of the tibia osteotomy surface, and a first bone cement groove is formed in the first bone cement area and used for containing bone cement; the first porous area is used for being fixed to the rear side of a tibia osteotomy surface, the first porous area is provided with a first porous structure, and pores for bone ingrowth are formed in the first porous structure. In the application, the front side of the corresponding unicompartmental prosthesis is fixed through the bone cement, and the rear side of the corresponding unicompartmental prosthesis is fixed through the porous structure, so that the mounting stability of the corresponding unicompartmental prosthesis can be improved.

The application provides a medical MCL femoral insertion avulsion repair instrument and method based on mesh suture and bone cement wrapping, and belongs to the technical field of femoral insertion avulsion repair instruments. The instrument comprises a first limiting framework, one side of the first limiting framework is provided with a second limiting framework, and the two sides of the first limiting framework and the second limiting framework are provided with a binding body; an auxiliary limiting mechanism is used for strengthening the stability of the device structure and assisting in suture surgery, and the auxiliary limiting mechanism is connected with the second limiting framework. The auxiliary limiting mechanism can effectively avoid the increase of instrument loss and suture needle fracture risk, effectively improve the working efficiency of suture, and the cooperation of the first limiting framework, the second limiting framework and the binding body can also well limit the legs of the patient during the operation, and can also protect the legs of the patient after the operation.

The invention discloses polymethyl methacrylate bone cement as well as a preparation method and application thereof, and belongs to the technical field of bone cement. The elasticity modulus of the polymethyl methacrylate bone cement does not exceed 2GPa, and the polymerization peak temperature of the polymethyl methacrylate bone cement does not exceed 90 DEG C. The polymethyl methacrylate bone cement has relatively low elastic modulus and polymerization temperature, is beneficial to improving the biocompatibility and matching degree of the bone cement and human bone tissues, and can be used for reducing thermal damage to surrounding tissues or nerves caused by polymerization heat release; or is used for improving elastic matching with human bone tissues so as to reduce the risk of stress-related complications. The preparation method of the polymethyl methacrylate bone cement is simple and easy to operate, and can be used for industrial production.

A bone cement includes a liquid component including a monomer configured to polymerize upon curing of the bone cement; and a solid component dispersed in the liquid component, the solid component including a powder of a polymer; an initiator; and a powder of a piezoelectric ceramic. A cell culture dish includes a base; and walls connected to the base to define an interior of the cell culture dish, wherein at least a portion of an interior surface of the base includes a piezoelectric material.

The invention belongs to the technical field of orthopedic surgical instruments, and particularly relates to a negative pressure type bone cement scraping device which comprises an extension rod, a negative pressure pipe, an adjuster and a working device. One end of the extension rod is a working end part, and the other end is connected with a holding end part; the working end part of the extension rod is hinged with the working device; one end of the negative pressure pipe is inserted into the extension rod through the working end part; one end of the regulator is inserted into the extension rod through the working end part; the regulator comprises a control knob, a first transmission part and a second transmission part; one end of the first transmission part is fixedly connected with the control knob, and the other end is provided with a first control part and a second control part; the first control piece and the second control piece abut against the negative pressure pipe. One end of the second transmission part is fixedly connected with the working device, and the other end is provided with a first driving part and a second driving part; the motion path of the first control piece is overlapped with the motion path of the first driving piece; the motion path of the second control piece is overlapped with the motion path of the second driving piece.

The invention relates to the technical field of medical materials, and discloses composite bone cement, which is prepared from the following components in percentage by mass: 40 to 60 percent of polymethyl methacrylate, 5 to 15 percent of calcium phosphate bone cement and the balance of bridging microspheres, and the total mass of the polymethyl methacrylate accounts for 40 to 60 percent of the total mass of the bridging microspheres accounts for 5 to 15 percent of the total mass of the calcium phosphate bone cement; the bridging microsphere is of a core-shell structure, the core is a phase-change material hydrogel microsphere, and the shell is a porous bioglass layer; according to the phase change material hydrogel microspheres, gelatin-sodium alginate hydrogel serves as a matrix, and tridecanol is wrapped to serve as a phase change material; the porous bioglass layer of the bridged microspheres is mesoporous bioglass, and the aperture of the mesoporous bioglass is 5-15 nm. The bone tissue can be prevented from being thermally damaged by polymethyl methacrylate during polymerization, the elastic modulus is improved, and the adjacent vertebral fracture risk is reduced.

The present application belongs to the technical field of medical textile material forming, and relates to a bone filling bag, which comprises a bag body. The bag body is integrally formed by a yarn warp knitting process to obtain a bag-shaped bag with a closed end. The surface of the bag body is distributed with through holes. The yarn is a multifilament. The through holes are not naturally formed by the warp knitting process, but are formed by punching after the warp knitting process. The present application optimizes the bag fabric structure, can inhibit yarn slippage, guarantee the structural stability of the bag under high pressure, and can customize the through hole structure as needed to realize controllable targeted dispersion of bone cement, adapt to various complex clinical scenarios, and has a simple preparation process, effectively solving the technical problems of poor structural stability of the existing bone filling bag, uncontrollable dispersion of bone cement, and complicated preparation.

The invention provides a bi-component modified bone cement composition, a modified bone cement material and application thereof, and belongs to the technical field of biomedical materials. The bi-component modified bone cement composition comprises bone cement powder and modified bone cement liquid. Wherein the bone cement powder comprises the following components in percentage by mass: 98.5-99.99% of an acrylate polymer, 0.1-0.5% of an initiator, 0.1-0.5% of a stabilizer and the balance And 0.01 to 1.5% of an initiator. The modified bone cement liquid comprises a modifier and a bone cement liquid in a volume ratio of 1: (1-20). Wherein the bone cement liquid is prepared from the following components in percentage by mass: 94.5 to 99.98 percent of acrylate monomer; 0.01-5% of a stabilizing agent; 0.01%-1.5% of an accelerant; the modifier is polyethylene glycol.

The percutaneous vertebroplasty combined instrument comprises an expandable supporting mesh bag, the expandable supporting mesh bag is provided with an outer-layer mesh bag body and an inner-layer mesh bag body, and the two ends of the outer-layer mesh bag body and the two ends of the inner-layer mesh bag body are closed to form an annular filling cavity and a center guiding cavity; the far end of the hollow distraction rod is detachably connected with the connector at the near end of the expandable supporting mesh bag, and an inner cavity of the hollow distraction rod is communicated with the central guide cavity; the directional injection core tube is slidably and rotatably arranged in the hollow opening rod in a penetrating manner, and the far end of the directional injection core tube extends into the central guide cavity and is provided with a radial directional discharge port; the rotary driving handle is arranged at the near end of the hollow distraction rod, is in transmission connection with the directional injection core tube and is used for driving the directional injection core tube to rotate so as to change the orientation of the discharge port. The double-layer structure of the expandable supporting mesh bag is used for achieving leakage prevention of the bone cement physical barrier, targeted filling is achieved through the rotatable directional injection core tube, the problems that in the prior art, the bone cement leakage risk is high, and the injection direction is uncontrollable are solved, and the safety and accuracy of an operation are improved.

The utility model discloses a mixed fixing type joint prosthesis assembly, belongs to the technical field of joint prostheses, and is designed for solving the problems that a joint prosthesis in the prior art is loosened and even falls off and the like. The utility model discloses a mixed fixing type joint prosthesis assembly which comprises a joint prosthesis which is an arc-shaped face, and the inner concave face of the joint prosthesis comprises a posterior condyle area and a main body area. The biological material layer covers at least part of the posterior condyle area, and the biological material layer is used for forming bone ingrowth between the biological material layer and the to-be-connected bone. According to the mixed fixing type joint prosthesis assembly, the stability of connection is improved through bone ingrowth formed between the biological material layer and the skeleton to be connected, and the problem that in the prior art, bone cement in the posterior condyle area cannot reach the effective penetration depth, and consequently a joint prosthesis is loosened and even falls off from the skeleton of the human body is solved; connection between the joint prosthesis assembly and the to-be-connected skeleton is more stable, and the use experience is better.

The invention belongs to the technical field of medical materials and orthopedic surgical instruments, and particularly discloses a multi-component bone cement loading, uniform mixing and injection integrated device. Comprising a first solid material cavity, a second solid material cavity and a liquid material cavity, the first solid material cavity, the second solid material cavity and the liquid material cavity are internally used for storing first solid-phase powder, second solid-phase powder and liquid-phase components correspondingly, long-term independent sealed storage of all the material cavities is achieved through sealing covers, and the solid-phase powder is prevented from being affected with damp and the liquid-phase components are prevented from being volatilized. The first solid material cavity and the second solid material cavity are detachably communicated through a powder connecting port, so that premixing of various solid-phase powder is realized; the solid material cavity is communicated with the liquid material cavity through a solid-liquid connecting port, so that solid and liquid components are uniformly mixed. After mixing is completed, the liquid material cavity is connected with an injection connector, and the piston is pushed through the driving rod to inject the evenly-mixed bone cement slurry to an operative treatment part. Ordered loading, mixing and injection of the multi-component bone cement can be achieved in a closed system, operation is easy and convenient, mixing is uniform, safety is high, and the multi-component bone cement injection device is suitable for clinical application of the multi-component bone cement.

The utility model provides a bone puncture needle assembly for percutaneous bone cement plasty, and belongs to the technical field of medical instruments. The bone puncture needle assembly comprises a guide needle and a bone puncture needle. One end of the guide needle is a first tip, the diameter of the guide needle is a first preset diameter, and the length of the guide needle is a first preset length. A first passage penetrating through the length direction of the bone puncture needle is arranged in the bone puncture needle, one end of the bone puncture needle is a second tip, the inner diameter of the bone puncture needle is a second preset diameter, the length of the bone puncture needle is a second preset length, the second preset length is smaller than the first preset length, and the second preset diameter is larger than the first preset diameter; after the guide needle is inserted into the lesion bone structure from the first tip end, the bone puncture needle is arranged on the guide needle in a sleeving mode, and the second tip end is inserted into the lesion bone structure. According to the bone puncture needle assembly for the percutaneous bone cement plasty, it can be guaranteed that a bone puncture needle with the large diameter can be accurately inserted into a diseased bone structure at a time, and damage to the body of a patient is reduced.