8 results about "Tissue material" patented technology

This invention provides a method for rapid extraction of collagen, belonging to the field of regenerative medicine technology. The method includes the following steps: (1) taking animal tissue material as the extraction raw material, crushing it to remove fat and impurities, and obtaining a precipitate; (2) placing the precipitate into a molding mold to obtain a tissue module, freezing and storing the tissue module to obtain a pretreated material; (3) mixing an acidic aqueous solution and pepsin to obtain an extract; placing the pretreated material in the extract in a suspended state, first allowing it to stand and then extracting it in suspension, then stirring, filtering or centrifuging, and retaining the supernatant to obtain a crude extract; (4) adding inorganic salts to the crude extract, allowing it to stand, filtering, collecting the precipitate, washing it, and then transferring the precipitate into a buffer solution to swell it. Filtering the swollen precipitate and dialyzing it to obtain a collagen aqueous solution, followed by post-processing to obtain collagen. The method for extracting collagen provided by this invention can significantly shorten the extraction time.

This invention relates to a method, device, and medium for displaying mechanical information for risk warning during impacted tooth extraction. The method includes: Step S1: Obtaining the three-dimensional modeling results of each tissue unit; Step S2: Obtaining the modeling results of each tooth segment unit; Step S3: Constructing the tooth segment and its contact constraints with surrounding tissues; Step S4: Based on the constructed contact constraints, combined with the overall finite element stiffness matrix and operational load, solving for the displacement response of each finite element mesh; Step S5: Based on the displacement response of each finite element mesh and the shape function, obtaining the displacement matrix of each element, and further obtaining the strain tensor of each element; Step S6: Based on the constitutive matrix of the tissue material corresponding to each element and the strain tensor, obtaining the stress tensor of each element; Step S7: Comparing the stress tensor of each element with its pre-configured threshold and assigning color values ​​to the finite element mesh of each element. Compared with the prior art, this invention has the advantages of real-time performance and high accuracy.

The present application discloses a kind of prosthesis with elastic pipeline and its manufacturing method, manufacturing method includes: according to the three-dimensional image of organ, the first tissue mold and the second tissue mold with elasticity are made;First false tissue material is coated on the surface of the first tissue mold, and the first false tissue with closed end and elasticity is made;The first false tissue is correctly positioned in the second tissue mold;Gelatinous second false tissue material is injected into the second tissue mold, and the first false tissue is covered;The interior of the first false tissue has first pressure value;Negative pressure defoaming step is applied to the second false tissue material;Freezing and thawing step is applied to the second false tissue material, to be shaped as second false tissue, in the thawing process in the freezing and thawing step, the interior of the first false tissue is repeatedly applied to decompression and pressurization step, and the decompression and pressurization step is executed below the first pressure value;The second tissue mold is removed, and the manufacturing of the prosthesis with elastic pipeline is completed.

The application relates to a head K-40 phantom construction method and a head K-40 phantom. The head K-40 phantom is equivalent to a spherical phantom: equivalent tissue material is established, the average atomic number of the head tissue is calculated based on the element composition of the head tissue, and an equivalent tissue solution with the same average atomic number is prepared with water as a matrix; geometric shape equivalence is achieved, a geometric efficiency function of a cylindrical detector for a spherical source is constructed based on a spherical-cylindrical detector geometric efficiency calculation model; the equivalent spherical radius is determined, the simulation geometric efficiency of the head phantom-detector system is calculated through a Monte Carlo method, the geometric efficiency function is solved to be equal to the simulation geometric efficiency, and the equivalent spherical radius is obtained; the phantom is constructed, the equivalent tissue solution is used to fill a spherical container with a radius equal to the equivalent spherical radius, and a spherical head K-40 phantom is constructed. The application can simplify the construction process of the head K-40 physical phantom, reduce the calculation resource requirement of the head K-40 digital phantom, guarantee the simulation precision, and has high flexibility.

The utility model discloses a pathological tissue embedding box relates to embedding box technical field, including box body and lid unit, and the top of box body left side wall is equipped with the lock hole, and the upper right side wall of box body is equipped with the clamping hook, and the left side of lid unit is equipped with the locking unit of detachable connection with the lock hole, the right side of lid unit is equipped with the connection rotating unit, and the connection rotating unit is detachably connected with the clamping hook, and can have relative rotation, and the middle position of box body inner chamber is equipped with the short torus, and the bottom wall of box body inner chamber located short torus outside evenly is equipped with a plurality of big penetration holes, and the bottom wall of box body inner chamber located short torus inside evenly is equipped with a plurality of small penetration holes, the utility model discloses box body and lid unit separate setting, can replace the lid unit of adaptation according to the specific application scene, and through locking unit and connection rotating unit realize quick installation, and it is convenient to adapt various pathological tissue material taking, and effectively improve pathological tissue material taking, embedding and the efficiency of section.

The utility model relates to the technical field of rodent nose tissue pathological specimen material taking, specifically discloses rodent nasal mucosa tissue material taking device, the one side of fixed plate is provided with first fixed clamping groove and second fixed clamping groove respectively, is provided with head container on the fixed plate, is provided with first clamping groove insertion port, second clamping groove insertion port and cutting knife clamping groove on head container respectively, and the one side of head container is provided with scale, the rodent nasal mucosa tissue material taking device whole simple structure, and the installation and use are convenient, and the material taking work of rodent nasal mucosa tissue of staff is convenient, since setting up the scale for measuring distance on the bottom plate, a plurality of graduation grooves are opened on the scale, the position of rodent head tissue is measured through the scale, is convenient for its accurate cutting, thereby help to improve the accuracy of rodent nasal mucosa tissue material taking.

Transport device (10) for at least one, in particular contamination-free, transport of at least one object to be transported between at least two different external environments, in particular for the transport of at least one container (20), in particular of at least one container (20) filled with a pharmaceutical product and / or a biological material, for example a genetic material and / or a cell culture and / or a tissue material, wherein the transport device (10) comprises at least one housing (120), wherein the housing (120) has at least two housing parts (130), a transport interior (121), an exchange opening (150) and a gas passage (140), wherein the housing (120) is designed to be variable into several states, wherein the several states comprise at least one open state, one closed state and one partially open state.wherein in the open state the at least one object to be transported can be inserted into and / or removed from the transport interior (121) through the exchange opening (150), wherein in the closed state the transport interior (121) is sealed by housing parts (130) of the housing (120), wherein in the partially open state the transport interior (121) is separated from the respective environment by housing parts (130) of the housing (120), but is connected to the respective environment by means of the gas passage (140) in a gas-permeable, in particular gas-permeable sterile, manner.

The utility model provides a kind of self-cleaning pathological tissue material taking platform, including equipment component, equipment component is provided with water scraping subassembly, auxiliary assembly is provided on water scraping subassembly, linkage assembly is provided below auxiliary assembly, equipment component includes base, the upper end of base is fixedly connected with operation table plate, the left and right two inner walls of operation table plate are symmetrically fixedly connected with multiple water outlets, the upper end right side of operation table plate is provided with water basin groove, water scraping subassembly includes strip groove being opened in the right inner wall of operation table plate, operation table plate is stably supported by the base in equipment component, left and right symmetrical water outlet and water basin groove form efficient cleaning system, can promptly discharge the waste liquid generated in the process of material taking, guarantee that operation table is dry and clean, maintain good working environment, and water scraping subassembly electric push rod drives water scraping strip plate to move, spring connection's triangular scraper is closely attached operation table plate, can quickly remove table area water, tissue debris and other sundries, significantly improve cleaning efficiency, reduce manual cleaning workload.