88 results about "Tissue morphology" patented technology

A method and system for determining tissue type is provided. The system comprises an electronic control unit (ECU) configured to acquire a value of an electrical parameter between a first electrode electrically coupled with tissue and a second electrode. The ECU is further configured to identify a tissue type from a plurality of tissue types based at least on the acquired value, and in an exemplary embodiment, to generate a tissue morphology map comprising a marker representative of the identified tissue type. The method comprises acquiring a value of an electrical parameter between a first electrode electrically coupled with tissue and a second electrode. The method further comprises identifying a tissue type from a plurality of tissue types based on at least the acquired value of the electrical parameter, and in an exemplary embodiment, the method further comprises generating a tissue morphology map based on the identified tissue type.

A non-invasive subject-information imaging apparatus according to this invention includes a light generating unit which generates light containing a specific wavelength component, a light irradiation unit which radiates the generated light into a subject, a waveguide unit which guides the light from the light generating unit to the irradiation unit, a plurality of two-dimensionally arrayed electroacoustic transducer elements, a transmission/reception unit which transmits ultrasonic waves to the subject by driving the electroacoustic transducer elements, and generates a reception signal from electrical signals converted by electroacoustic transducer elements, and a signal processing unit which generates volume data about a living body function by processing a reception signal corresponding to acoustic waves generated in the subject by light irradiation, and generates volume data about a tissue morphology by processing a reception signal corresponding to echoes generated in the subject upon transmission of the ultrasonic waves.

The present invention provides porous material of calcium phosphate of high strength whose open pores penetrate the porous body and have a size of 70 μm or more, preferably 100 μm or more, and are arranged in a three-dimensional network, whose porosity is sufficiently high for blood vessels to invade and perforate itself or for cells to infiltrate itself, whose chemical composition, in particular, Ca/P molar ratio can be freely changed within the range of 0.75 to 2.1, to which elements important for facilitating osteogenesis and producing resorbable effect can be added, and whose phase composition can be relatively easily changed. The invention is porous sintered compact of calcium phosphate which has artificially formed, penetrated open pores 70 μm to 4 mm in diameter, whose porosity is from 20% to 80%, and whose chief ingredient is calcium phosphate having a Ca/P molar ratio of from 0.75 to 2.1.

Systems and methods treat hemorrhoids by introducing a treatment device into the anal canal to extend above a hemorrhoidal plexus and adjacent a tissue region containing blood vessels that feed the hemorrhoidal plexus. The systems and methods operate the treatment device to affect tissue morphology in the tissue region to occlude or otherwise reduce blood flow through the vessels.

The invention provides a method for constructing tissue engineering skin. In the method, human epidermal stem cells and hypodermal fibroblasts are taken as seed cells, and a homologous acellular dermal matrix modified by a human placental type IV collagen is taken as a stent, so that active dual-layer engineering skin is compounded and constructed by using a gas-liquid interface separate culture method. The tissue engineering skin constructed by using the method is closer to the structure of natural skin; and as proved by histomorphology, the tissue engineering skin has an epidermal and hypodermal double-layer structure, wherein the hypodermal collagen stent has a complete structure, an epidermal layer is provided with a plurality of layers of cells of different differentiation degrees, and the morphological requirement of the tissue engineering skin is met.

A compensation circuit has a predetermined, known complex impedance and is located in a handle of a catheter or in a distal end of a cable that connects to the catheter. The compensation circuit is probed with a pilot signal produced by a compensation control that is external to the catheter, by way of an electrical connection through the connecting cable. The compensation control measures the complex impedance, which is the combination of the circuit's known impedance as well as that of the cable. The compensation control then determines the difference between the measured and the known complex impedances. The difference represents that which is attributable to the cable, and is used to compensate or cancel out such cable-related contributions to complex impedance in measurements made over other electrical connections in the same cable. In another aspect, an unknown tissue is identified as one of a plurality of possible tissue types such as regular myocardium, scar and fat based on the measured phase angle of the complex impedance of the unknown tissue.

The invention discloses a medical image holographic AR (augmented reality) display technology system in the medical field. The system comprises an image recognition device, a motion capture device, a man-machine interaction interface and a three-dimensional virtual image superposing system and is characterized in that the image recognition device and the motion capture device acquire a real medical image of a human body, the real medical image acquired after digital conversion is superposed with a three-dimensional virtual human body model and displayed on the man-machine interaction interface, and by means of the human-computer interface which is an interactive advanced human-computer interface of a computer, medical technicians can sense objective existence of organs and tissue morphology in the body of a real patient by combining a virtual reality system with medical images.

The invention discloses a method for obtaining aluminum oxide-based ternary melt grown ceramic tissue morphology, which comprises the following steps of: combining zone melting and liquid metal cooling, and performing directional solidification on a plurality of precast bodies formed by using aluminum oxide, yttrium oxide and zirconium oxide respectively; and taking the longitudinal sections and the transverse sections of the directional solidified precast bodies, performing conventional metallographic treatment, and performing surface metal spraying to obtain tissue morphology and interface morphology of the aluminum oxide-based ternary eutectic oxide melt grown ceramic at different growth rates. In the directional solidification, the withdrawing rate is 1 to 10,000mum/s, and the laser power is 200 to 1,500W. The obtained directional solidification tissues are greatly different from the tissues in a melting zone and have no obvious tissue transition zone, and the interface morphologyis preserved perfectly.

The invention discloses a high-carbon steel wire rod tissue grain size grading method. The method can finish high-carbon steel wire rod tissue grain size grading by the steps of manufacturing a sample, mechanically treating, chemically treating, observing and assessing and displaying results. The method disclosed by the invention achieves high-carbon steel wire rod tissue grain size grading by assessing the tissue grain size, namely the microscopy tissue morphology size. According to the method disclosed by the invention, an identical corrosion degree on the surface of a test sample is achieved by limiting nitric acid alcohol concentration and corrosion time; compared with a standard atlas, assessment errors can be reduced. According to the method disclosed by the invention, a supplementary effect among multiples is achieved by respectively grading tissue grade sizes under 100 times and 500 times. According to the method disclosed by the invention, four view fields and a core view field are chosen from on a detection ring of one fourth of the diameter of a high-carbon steel wire rod through observing positions and view field regulations; the choice of the observing positions and the view fields can reflect the tissue grain size situation of the whole cross section; thus, the obtained assessment results has strong representativeness, reality and validity.

According to the invention, a powder catalytic material Nd<3-x>CoxNbO7 (x being greater than or equal to 0.5 and less than or equal to 1) is prepared by adopting a supercritical hydrosynthesis method and a chemical vapor condensation and deposition method; a composite porous nanometer catalytic material Nd<3-x>CoxNbO7 (x being greater than or equal to 0.5 and less than or equal to 1) -zincosilicate molecular sieve is prepared by adopting an impregnating and baking method; and a novel photoelectrode Nd<3-x>CoxNbO7 (x being greater than or equal to 0.5 and less than or equal to 1) is prepared. The three novel materials are represented: tissue morphology analysis is performed by a transmission electron microscopy, and results show that catalyst particles are irregular in shape, with the average particle size of 150 nm; phase analysis is performed by an X-ray diffractometer, and results show that Nd2CoNbO7 has a single phase, and relatively high crystallinity; the chemical speciation of the surface of the catalyst and the elementary composition of a microcell as well as the structural characteristics of an electronic shell are discussed by an X-ray photoelectron spectroscopy; and a characteristic absorption edge of the Nd2CoNbO7 is determined by a UV-Vis diffuse reflection spectroscopy to obtain the band gap width of the Nd2CoNbO7 which is 2.412 eV. Finally, the catalyst is used for decomposing water to produce hydrogen, and carrying out catalytic degradation on organic pollutants such as microcystic toxins, methylene blue and sulfamethoxazole in a water body under visible light. Experimental results show that the catalyst prepared according to the invention is good in catalytic effect.

The common premise of synthetic implants in the restoration of diseased tissues and organs is to use inert and solid materials. Here, a porous titanium implant enables the delivery of microencapsulated bioactive cues. Control-released TGFβ1 promoted the proliferation and migration of human mesenchymal stem cells into porous implants in vitro. Upon 4-wk implantation in the rabbit humerus, control-released TGFβ1 from porous implants significantly increased BIC by 96% and bone ingrowth by 50% over placebos. Control-released 100 ng TGFβ1 induced equivalent BIC and bone ingrowth to adsorbed 1 μg TGFβ1, suggesting that controlled release is effective at 10-fold less drug dose than adsorption. Histomorphometry, SEM and μT showed that control-released TGFβ1 enhanced bone ingrowth in the implant's pores and surface. These findings suggest that solid prostheses can be transformed into porous implants to serve as drug delivery carriers, from which control-released bioactive cues augment host tissue integration.

The invention relates to an experimental method and device for determining high temperature solidification phase transition rule, and belongs to detection instruments and meters. According to the invention, the solidification property of metal and alloy is determined at on-site cooling rate under a high-temperature condition so as to simulate real on-site working conditions; A phase transition temperature point is obtained by simulation determination of the high temperature solidification phase transition rule SPT; the whole phase transition process is observed; quantitative analysis of the phase transition is carried out; the phase transition rule is verified; and the transition rule is determined. According to the invention, a DTA differential thermal analyzer is used to determine the solidification phase transition point, liquidus line and solidus point of metal and alloy materials at different cooling rates; The cooling rate and the quenching temperature are determined based on the DTA results; with the method and device of the invention, a sample is melted and cooled to different quenching temperatures, and quenching is carried out by liquid nitrogen alcohol; the sample tissue morphology after quenching is observed; the contents of the first-precipitated phases in the high temperature tissue at different cooling rates are analyzed to obtain the high temperature solidification phase transition rule SPT of the sample; selection of an optimal solidification mode is realized at specific production requirements.

The invention relates a Pediococcus acidilactici strain BCC-1 capable of efficiently utilizing xylooligosaccharide and application thereof. The invention provides a Pediococcus acidilactici strain BCC-1 capable of efficiently utilizing xylooligosaccharide and application thereof based on the intestinal tract health problem which is likely to occur in modern livestock and poultry production. The invention also provides a feed additive comprising the Pediococcus acidilactici strain BCC-1 and xylooligosaccharide. The product can further improve the application effect of the lactobacillus strain, improve the intestinal tract tissue morphology of the anterior intestine of poultry, increase the content of short chain fatty acid in caecum, reduce the pH value in caecum, improve intestinal tract health of poultry, greatly increase the production performance of poultry, and realize green and health breeding.

The present invention belongs to the technical field of biological three-dimensional printing and particularly discloses a method for preparing artificial muscle tendons by using a biological three-dimensional printing and an electrospinning technology. The preparation steps are as follows: S1, seed cell culturing; S2, nano fiber membrane preparing; S3, cell coating layer preparing; and S4, nano fiber membrane/cell coating layer treating. The biological three-dimensional printing and the electrospinning technology are combined, the electrospinning method is used to obtain directional nano fiber membranes, the biological three-dimensional printing technology is used for printing on the nano fiber membranes to obtain lubricating cell coating layers to rapidly realize adhesion and colonization of seed cells and obtain the high polymer material artificial muscle tendons containing the cells and having good lubricating performance, the manufacture method is simple and convenient, better simulates tissue morphology, cell composition and lubricating performance of the natural muscle tendon tissues, and is conducive to muscle tendon repair and normal function recovery.

The invention discloses an experimental method of effects of DNA oxidative damage and bone cell apoptosis on avascular necrosis, the method comprises the following steps: experimental grouping and establishment of an animal model, preparation of specimens, histomorphology observation under a light microscope, observation by a transmission electron microscope, bone cell apoptosis situation detection by TUNEL (terminal dexynucleotidyl transferase(TdT)-mediated dUTP nick end labeling) method, bone marrow hematopoietic cell DNA oxidative damage detection by monoclonal antibody N45.1 immunohistochemistry method, and statistical analysis. According to the method, experiment animals are respectively killed in the second week and the fourth week after the last time of administration, and five animals are killed for each time in each group; bilateral femoral heads are taken for conventional fixed decalcification for stand-by testing, the number of vacant bone lacunas is counted by HE (hematoxylin-eosin) staining, the bone cell morphological change is observed by the electron microscope, the bone cell apoptosis situation is detected by the TUNEL method, the bone marrow hematopoietic cell DNA oxidative damage is detected by the immunohistochemistry method, and the relationship between SANFH ((steroid-induced avascular necrosis of femoral head)) and the bone marrow hematopoietic cell DNA oxidative damage and the bone cell apoptosis is explored, and provides new ideas for the further study of pathogenesis of the steroid induced avascular necrosis of femoral head.

The invention provides a method for processing form and elasticity information of a tissue and an elasticity detection apparatus. The method comprises the following steps of acquiring a form image and an elasticity image of the tissue, wherein the form characteristic information of the tissue is included in the form image; the elasticity characteristic information of the tissue is included in the elasticity image; fusing and displaying the elasticity image in the form image; determining a puncturing position according to the guide of a fused image, and puncturing the tissue for sampling. Through the elasticity detection apparatus, the elasticity characteristic information and the form characteristic information of the tissue can be acquired, so that the guide is jointly provided for the location of the puncturing position according to the additive fusion of the elasticity image and the form image; the accurate locating of a pathologic tissue can be realized, so that the reliability of aspiration biopsy is greatly improved.

Pretreating a tissue sample with an effective amount of collagenase results in increased immunodetection of collagen and enhanced preservation of tissue morphology. Such an improved method for immunodetection of collagen can be used in immunohistochemical studies of formalin-fixed, paraffin-embedded tissue sections.

The invention discloses a sample manufacturing method for representing the blade body performance of a thin-walled blade casting, which relates to the field of thin-walled blade testing, and is used for accurately and conveniently extracting a sample capable of representing the blade body performance of a thin-walled blade. The sample manufacturing method comprises the following steps: manufacturing a thin-walled blade including a thickened part, wherein the thickness of the thickened part is greater than the thickness of other parts of the thin-walled blade body; sampling from the thickened part; and processing the taken sample into a sample of a set shape. In the technical scheme, the thin-walled blade including the thickened part are manufactured before sampling the thin-walled blade; and the tissue morphology of the thickened part is the same or nearly the same as the tissue morphology of other parts of the thin-walled blade body. Then samples are taken from the thickened part andthen processed to the desired shape. The above technical scheme realizes sampling of the thin-walled blade, and the sample performance represents the performance of the blade body.

The invention relates to a shrimp and crab water-rich tissue paraffin section manufacturing method. A common paraffin tissue section method is lack of tissue distinction degree in tissue and organs of water-rich shrimps and crabs difficult to have texture fixed and soft in texture and vulnerable to tissue fragmentation, overlapping and warpage resulting in serious affect on microscopic observation effect of the tissue and difficulty in obtaining of an ideal and clear tissue structure. In the method, through negative pressure, fixation and embedding of a sample, the tissue is shaped and extended to avoid error brought by fold overlapping and elasticity of the water-rich tissue. The method is convenient in operation, highly practicable and short in cycle, good tissue distinction degree is achieved for the tissue organs of the water-rich shrimps and crabs difficult to have texture fixed and soft in texture, paraffin section observation with a complete tissue form can be realized, and all requirements of research personnel on section tissue observation can be met.