36 results about "Bone specimen" patented technology

The invention is a method for making a three-dimensional visualization model of the internal structure of bone. In the method, a dry bone specimen is embedded and fixed by transparent polymethyl methacrylate (PMMA) to form a model specimen, and then the cross-section of the specimen is ground layer by layer, two-dimensional grayscale images and true color images are scanned and recorded layer by layer, and then three-dimensional medical reconstruction software is used to obtain high-precision three-dimensional visual model of a proximal bone structure. The invention can be applied to three-dimensional reconstruction of bones of human bodies and animals, thereby obtaining the high-precision three-dimensional visual model which can objectively, truly and completely reflect the proximal bone structure. The method can carry out certain evaluation on the structural form of bone trabecula as well as the connectivity of three-dimensional bone trabecular, and can determine the structural parameters of bone trabecular, thus providing scientific basis for medical research and clinical care.

The invention discloses a making method for a fracture model of artificial bone, which comprises the following steps: carrying out continuous spiral CT (computed tomography) scanning on affected bone along the cross section to obtain a multi-layer image, storing according to a Dicom 3.0 standard and making out a three-dimensional reconstruction model of the bone and a fractured section by utilizing Mimics software; fractioning the model to be processed by UG (Unigraphics) software and making an appearance mold of the bone and a mark groove for the position of a fracture line of the archetypalbone by numerically-controlled mill processing; and carrying out three-dimensional printing to obtain a fractured section model, also placing at the position of the mark groove of the corresponding bone appearance mold, jointing an upper mold and a lower mold, filling polymethyl methacrylate, standing at room temperature, solidifying and taking out the fractured section model so as to obtain a specimen of the fracture model of the artificial bone. In this way, the prepared fracture model is made in one step, and the complicated processes of obtaining a bone specimen and afterwards making fracture artificially, the consumption of equipment and the worry of enhancing the cost are omitted. The condition of stress between fractured sections is comprehensively and truly reflected by an obtained fracture interface, and the assistance is provided to the treatment of clinical fracture.

An orthopedic fastener rated to be received into a corresponding bone specimen. The corresponding bone specimen has a predetermined bone hole preparation including a tapered female threaded section. Threads on the tapered female threaded section have a pre-selected thread profile. The fastener itself comprises a male tapered threaded portion. Threads on the male tapered threaded portion are rated to mate, according to the pre-selected thread profile, with corresponding threads on the tapered female threaded section. The pre-selected thread profile has a predetermined thread geometry. The thread geometry is predetermined so that, when the male tapered threaded portion on the fastener is fully engaged in the tapered female threaded section on the bone hole preparation, a predetermined further tightening of the fastener imparts a corresponding predetermined radial preload on bone tissue surrounding the tapered female threaded section.

An orthopedic fastener rated to be received into a corresponding bone specimen. The corresponding bone specimen has an overall outer thickness from near cortex to far cortex. Preferably, but optionally, the corresponding bone specimen also has a predetermined bone hole preparation which includes a pilot hole through the near cortex and into the far cortex. The fastener itself comprises a plurality of cutting flutes on one end. The cutting flutes transition into a tapered male threaded portion. The tapered male threaded portion provides a plurality of self-tapping threads. The self-tapping threads taper from a minimum thread crest diameter D_min proximal to the cutting flutes to a maximum thread crest diameter D_max distal from the cutting flutes. The cutting flutes are further rated to ream the pilot hole, when provided, to a diameter of about D_min.

The invention provides a preparation method for a bone specimen used in medical teaching. The method comprises the following steps: collection and treatment; cooking; cleaning; burying with soil; cleaning; degreasing; bleaching; disinfection; and spraying of a colorless transparent crystal paint. The method is characterized in that a cooking method is combined with a soil burying method, so soft tissue removal is more thorough compared with the simple cooking method, a preparation period is shorter compared with the simple soil burying method, and the method only takes about 6 months and is thus reduced in preparation time; no damage is posed to compact bone substances and cancellous substances, and the fine structure of a bone does not change and is identical to the fine structure of a living body; and though paint treatment, the bone is isolated from air, so the bone specimen is not prone to mildew, reduces pollution and irritation to human beings and ensures the health of a user.

The invention discloses a method of removing meat from a bone specimen. The method comprises the following steps: 85%-90% of soft tissues are removed from an animal carcass, and a bone part is kept; the bones are then divided to limb, skull, thorax, lumbar vertebra and hipbone parts, and the parts are packaged respectively; after a mixed solution is prepared by protease, a degreasing agent and water with a mass ratio of 20-50 to 1-2 to 2000-2100, and thermostatic waterbath is carried out; the well-packaged bones are put in the mixed solution respectively, the bones are just immersed by the mixed solution and are soaked for 4 to 5 h, the soft tissues are washed out by high pressure water, and the impurities on the bones are removed; and the bones are then put in the mixed solution again andare soaked until no impurities exist on the surfaces of the bones, the bones are taken out, the soft tissues are washed out by high pressure water, and then, the bones are washed clean by using a detergent. The processed bones are clean and complete, damages of the bones are avoided, the meat removal method is simple, the meat removal time is shortened in a condition of maintaining the integrityof the bones, and the application potential is great.

The embodiments presented herein present a single needle core biopsy instrument and modification required that convert the single needle core biopsy instrument to a dual needle core biopsy instrument. Depending on the design, the dual needle core biopsy instrument permits the simultaneous extraction of tissue or bone specimens taken at between 0.1 mm and 3 mm apart.

The invention discloses an adjustable bone tumor pathological specimen sampling fixator which comprises a workbench, a rotating shaft and a worm gear, a guide block is slidably mounted in a first sliding groove, a mounting frame is fixedly mounted at the top end of a supporting frame, and a first worm and a second worm are rotatably mounted between the mounting frame and the workbench. One end of the first worm and one end of the second worm are in transmission connection with the output end of a first motor and the output end of a second motor respectively, the two ends of the worm gear are in meshing transmission with the first worm and the second worm respectively, one end of the rotating shaft is fixedly installed in the worm gear, and the middle of the rotating shaft is rotationally connected with the guide block. A rotating frame is fixedly installed at the end, away from the worm gear, of the rotating shaft, and a movable clamping mechanism is installed in the rotating frame. Through meshing transmission cooperation of the first worm and the second worm with the worm gear, a clamped bone specimen can be lifted and rotated, and pathological specimen sampling can be conveniently carried out on different positions of the bone specimen.

An orthopedic fastener rated to be received into a corresponding bone specimen. The corresponding bone specimen has (1) an overall outer thickness from near cortex to far cortex in a predetermined rated range of outer bone thicknesses, and (2) a predetermined bone hole preparation including an entry portion in the near cortex. The entry portion has a predetermined minimum entry diameter. The fastener provides a tapered portion. When the fastener is operably secured into the far cortex of a bone thickness for which it is rated to be received, the tapered portion of the fastener contacts the entry portion in the near cortex so as to impart no more than about 0.2 mm of radial preload into the bone surrounding the entry portion.

The invention provides a bone specimen degreasing and bleaching apparatus. The apparatus degreases and bleaches animal bones in a semiautomatic or fully-automatic mode in order to obtain an ideal specimen. The apparatus comprises a degreasing tank and a bleaching tank paralleling to the degreasing tank, the degreasing tank and the bleaching tank are respectively movably provided with lids, the apparatus also comprises a track device arranged above the degreasing tank and the bleaching tank, and a hanging basket, and the hanging basket is fixedly provided with a hanging rod; and the track device is movably provided with a dolly, the dolly is provided with a motor, and the motor is in transmission connection with the hanging rod through an elevating device. Stirring paddles are arranged in the degreasing tank and the bleaching tank; and temperature control devices are arranged in the degreasing tank and the bleaching tank. The track device comprises a left track and a right track paralleling to the left track, and the hanging rod traverses through a gap between the left track and the right track, and is connected with the elevating device. The apparatus also comprises a control system and a temperature and concentration monitoring and adjusting system.

The invention discloses an adjustable fixator for bone tumor pathological specimen sampling, which comprises a device base, a nesting rod, an embedded rod and a workbench, wherein the nesting rod is fixedly connected to one side of the top of the device base; the embedded rod is movably connected to the interior of the nesting rod; the top of the embedded rod is fixedly connected with the workbench; a positioning bolt is connected to one side of the top of the nesting rod in an embedded manner; the front surface of the workbench is movably connected with an occlusion block; a second positioning bolt is connected to the bottom end of the occlusion block in an embedded manner; and the top of the occlusion block is fixedly connected with a movable block; and the movable block improves the flexibility of the device main body. The fixing mechanism can be used for firmly fixing a bone specimen; when a medical worker cuts the specimen, the specimen does not shake, and the stability of the device main body is improved; due to the design of a workbench cleaning mechanism, the medical staff can conveniently and rapidly clean bone scraps on the surface of the workbench, the convenience of thedevice main body is improved through a rotating block, and the adjustable fixator is suitable for being used for sampling bone tumor pathological specimens and has wide development prospects in the future.

The invention belongs to the technical field of specimen preparation, and particularly relates to a method for removing soft tissues from a canine bone specimen. The method comprises the steps: removing large muscles attached to a skeleton, and dividing the skeleton into a skull, a spine, limb bones, a sternum and ribs; preparing alkaline protease solutions with the concentrations of 0.3% and 0.5%; putting the skull, the limb bones and the chest ribs into 0.3% alkaline protease solution, and respectively soaking in a constant-temperature incubator at 50 DEG C for 36 hours, 66 hours and 60 hours; putting the spine bone into a 0.5% alkaline protease solution, and soaking in a 50 DEG C constant-temperature incubator for 60 hours; and taking out the bone and washing with water. After the softtissues are removed by the method, the prepared specimen is complete in bone and less in residual grease of the bone, and the prepared specimen is white in bone color.

The invention discloses a fleshing device and method for making a bone specimen, and relates to the technical field of bone specimen making. The fleshing device for making the bone specimen comprisesa base, a cooking cavity and a soaking cavity, the base is provided with the independent cooking cavity and soaking cavity, and a vertical rod and a movable rod are installed to enable a hollowed-outbasket to move back and forth in the cooking cavity and the soaking cavity to be used for containing the bone specimen for cooking and soaking; meanwhile, designed water inlet and outlet pipelines andflushing pipelines are used for assisting in manufacturing bone specimens; when animal carcass soft tissues are removed, only 65-80% of soft tissues need to be removed, so that the step of reducing the maximum difficulty in the manufacturing process of the bone specimen is reduced; meanwhile, a bone specimen is steamed through a designed steaming cavity and then soaked in an open type exposed toair for 18-24 hours at the constant temperature of 20-35 DEG C, so that impurities attached to the bone and residual soft tissues are completely separated from the bone; and then a flushing pipeline is used for high-pressure flushing with clear water, so that the clean and complete skeletal specimen without flesh can be obtained.

The invention discloses a method for making bone specimens of small animals. The method comprises the following steps: 1, killing: killing the small animals such as frogs and fish; 2, fixing shapes: removing muscles as much as possible, and fixing the shapes thereof; 3, putting the small animals after muscle removal into a tenebrio molitor feeding box, and allowing tenebrio molitor to eat the muscles thereof; 4, treating the specimens: then treating the specimens, and fixing according to the natural states of the animals. By the method, the tenebrio molitor is used for making the bone specimens of the small animals; the method is simple and easy to implement; by the method, the bone specimens are intact; the method is a good method for making the specimens of the small animals; the methodcan also be applied to local places, where the muscles are not easy to remove, of the bone specimens of large animals.

The invention relates to a bone specimen decalcification post-treatment device, which effectively solves the problems that a decalcifying agent is not thoroughly cleaned by flushing with running waterand the bone structure is easily damaged. The bone specimen decalcification post-treatment device is characterized by comprising a cylinder, wherein a plurality of air inlet pipes are circumferentially and uniformly distributed on the side wall of the cylinder body; a protruding circular pipe is arranged at the top part of the cylinder body; the upper end of the circular pipe is sealed, and the lower end communicates with the cylinder; a plurality of arc-shaped and horizontal first exhaust grooves are uniformly distributed in the circumference of the side wall of the circular pipe; an annularsleeve is rotatably installed on the circular pipe; an arc-shaped and horizontal second exhaust groove is formed in the side wall of the annular sleeve; the circumferential length of the second exhaust groove is smaller than that of each first exhaust groove; and in the rotating process of the annular sleeve, the second exhaust groove can face the plurality of first exhaust grooves in sequence. The bone specimen decalcification post-treatment device can clean the decalcifying agent in the pores of a bone specimen effectively, and meanwhile, the structure of the bone specimen cannot be damaged.

The invention relates to a cleaning device for orthopedic slices after decalcification, which effectively solves the problems that a decalcifying agent is not thoroughly cleaned by running water flushing and a bone structure is easily damaged. According to the technical scheme, the device comprises a barrel, a plurality of air inlet pipes are evenly distributed on the circumference of the side wall of the barrel, a conical hole with the small end facing downwards is formed in the top of the barrel, a conical plug matched with the conical hole is installed in the conical hole, a pressing plateis installed above the conical plug in a straight hole, and a compressed spring is installed between the pressing plate and the conical plug; a vertical pressing rod is fixed to the upper end of the pressing plate, an end face cam is installed at the top of the barrel, and the end face cam can rotate to push the pressing rod and the pressing plate to move up and down. According to the bone specimen cleaning device, a decalcifying agent in pores of a bone specimen can be effectively cleaned, meanwhile, gas stirs cleaning liquid to flush the surface of the bone specimen, bubbles formed by the gas can further improve the exchange efficiency of the cleaning liquid inside and outside the bone specimen, the cleaning effect and the cleaning efficiency are further improved, and meanwhile the structure of the bone specimen cannot be damaged.

The invention discloses a method for detecting the concentration of cycloserine in bone tuberculosis specimens. The method includes the following steps: (1) the bone tuberculosis specimens are frozenby liquid nitrogen, after the liquid nitrogen is volatilized, a solvent is added for grinding and cycloserine extraction is conducted, and a tissue extraction solution is collected; (2) the tissue extraction solution and a cycloserine standard solution are detected through high performance liquid chromatography-mass spectrometry combination, and during measuring, if the retention time of a chromatographic peak of the tissue extraction solution is consistent with the retention time of a chromatographic peak of the cycloserine standard solution, selected qualitative ions all occur in a sample mass spectrum after background subtraction, and the abundance is consistent compared with the ion abundance of the cycloserine standard solution, and it is judged that the cycloserine is detected; and (3), according to data, obtained in the step (2), of the tissue extraction solution measured through high performance liquid chromatography-mass spectrometry combination, the content of the cycloserinein the bone tuberculosis specimens is quantitatively analyzed through an internal standard method, and thus the concentration of the cycloserine in the bone tuberculosis specimens is obtained. According to the method, the time of processing the bone specimens is shortened, and the measurement concentration is accurate.

The invention discloses a manufacturing method for fracture remodeling, and the manufacturing method comprises the steps: obtaining a fracture structure, and extracting detailed graphic data of a fracture part according to the fracture structure; identifying fracture texture parameters according to the graphic data of the fracture part; acquiring a bone structure teaching aid, segmenting the bone structure teaching aid according to the fracture texture parameters to form a teaching aid fracture part; and adjusting the position of the teaching aid fracture part according to the fracture part in the fracture structure to obtain the bone structure teaching aid. The fracture teaching aid manufactured for various fracture types is realized, the surgical practice skills are more comprehensive, the complex process of artificial fracture after obtaining a bone specimen, the worries of equipment loss and cost increase are avoided, and the obtained fracture teaching aid is consistent with the positions of various fracture types, is closer to clinic when being used for practice teaching, and the experimental result has a better clinical effect.

The invention belongs to the technical field of medical equipment, and particularly relates to an orthopedic clinical operation steel plate pre-bending device. The orthopedic clinical operation steel plate pre-bending device comprises a base and a top seat, a first adjusting mechanism and a second adjusting mechanism are arranged in the base and the top seat correspondingly, and the left and right driving ends of the first adjusting mechanism are connected with left and right fixing seats correspondingly and used for adjusting the distance between the left and right fixing seats; and the driving end of the second adjusting mechanism is connected with the mounting base, a hydraulic device is mounted on the mounting base, the telescopic end of the bottom of the hydraulic device is connected with the mounting plate, and a pressing die is mounted on the mounting plate. According to the invention, a skeleton specimen can be clamped and fixed through the clamping device, meanwhile, a pressing die matched with the bone specimen in shape can be installed on the hydraulic device, a steel plate needing to be pre-bent is placed on the bone specimen, pressure is applied to the steel plate through the pressing die, pre-bending of the pressing die is completed, the steel plate can be better attached to the bone, and the steel plate can be used in an operation without being adjusted again.