74 results about "Bronchus/Bronchial" patented technology

This invention relates generally to medical imaging and, in particular, to a method and system for reconstructing a model path through a branched tubular organ. Novel methodologies and systems segment and define accurate endoluminal surfaces in airway trees, including small peripheral bronchi. An automatic algorithm is described that searches the entire lung volume for airway branches and poses airway-tree segmentation as a global graph-theoretic optimization problem. A suite of interactive segmentation tools for cleaning and extending critical areas of the automatically segmented result is disclosed. A model path is reconstructed through the airway tree.

The invention discloses light-fragrance electronic cigarette atomized smoke solution and a preparation method thereof. The atomized smoke solution comprises the following components in percentage by weight: 30-45 percent of propylene glycol, 20-35 percent of glycerol, 5-15 percent of deionized water, 5-15 percent of alcohol, 15-45 percent of traditional Chinese medicine liquid, 2-5 percent of tobacco flavor, 2-6 percent of tobacco extract and 0.1-2 percent of forming agent, wherein the traditional Chinese medicine liquid is extraction liquid which is obtained by extracting traditional Chinese medicine mixture through water distillation or alcohol extraction, and the traditional Chinese medicine mixture consists of tendrilleaf fritillary bulb, mint leaf, loquat leaf, dendranthema indicum, violet, sweet-scented osmanthus and green tea. The light-fragrance electronic cigarette atomized smoke solution not only can meet the smoking demands of smokers, but also can effectively reduce irritation of smoke to tracheas, bronchi, throats and lungs of bodies, and has the efficacies of clearing heat, moistening lungs, arresting coughs, expelling phlegm, refreshing and restoring consciousness, regulating qi-flowing, resolving stagnation and the like.

This invention is for nasal adaptors for oral inhaler devices and methods of adapting an oral inhaler device with a nasal adaptor. The nasal adaptor of the present invention, in assembly with an oral metered dose aerosol inhaler converts an oral inhaler device to nasal delivery. The nasal adaptor in assembly with an oral inhaler device when in operation, simultaneously administers an inhalant to the nasal mucosa and down to the bronchial tree and lungs. In this manner a nasally delivered anti-inflammatory agent would travel down the same route as an allergen would—the nostril, nasal cavity, nasopharynx, trachea, bronchi and lung tissues.

An image acquisition unit acquires a real endoscope image. A first evaluation value acquisition unit acquires a first evaluation value indicating the hole likeness of the insertion destination of an endoscope, and a second evaluation value acquisition unit acquires a second evaluation value indicating the boundary likeness of a plurality of bronchi at the bronchial branch. A determination unit determines whether or not a branching structure is included in the real endoscope image using both the first and second evaluation values. When it is determined that a branching structure is included, a virtual endoscope image generation unit generates a virtual endoscope image, and a display control unit displays the real endoscope image and the virtual endoscope image on a display.

An isolated heart or heart-lung preparation in which essentially normal pumping activity of all four chambers of the heart is preserved, allowing for the use of the preparation in conjunction with investigations of electrode leads, catheters, ablation methods, cardiac implants and other medical devices intended to be used in or on a beating heart. The system can be designed to be used within a Magnetic Resonance Imaging (MRI) unit or a X-ray computed tomography (CT) scanner. The preparation may also be employed to investigate heart and lung functions, in the presence or absence of such medical devices. In order to allow comparative imaging visualizations of either or simultaneously the heart and / or lung structures and devices located within the chambers of the heart or vessels or bronchi within the lungs, a clear perfusate such as a modified Krebs buffer solution with oxygenation is circulated through all four chambers of the heart and thus the coronary and / or pulmonary vasculatures. A ventilator with intubation tube can be used to inflate / deflate the lungs and / or provide oxygen to the isolated organs. The preparation and recordings of the preparation may be used in conjunction with the design, development and evaluation of devices for use in or on the heart and / or lungs, as well as for use as an investigational and teaching aid to assist physicians and students in understanding the operation of the cardiopulmonary system.

The invention belongs to the technical field of medical image-based image processing, and particularly relates to a method for automatically extracting a tracheal tree from a chest CT image. The method comprises the steps of obtaining main tracheae and main bronchi; according to a 3D region growing segmentation mode and information of the obtained main tracheae and main bronchi, building an adaptive threshold 3D region growing segmentation model and an adaptive threshold leakage model; by utilizing the adaptive threshold 3D region growing segmentation model and the adaptive threshold leakage model, extracting second tracheal branches of the chest CT image; according to intermediate information of the extracted second tracheal branches, adjusting parameters of the adaptive threshold 3D region growing segmentation model and the adaptive threshold leakage model, and then extracting third tracheal branches of the chest CT image; and based on an obtained tracheal tree topology structure, extracting terminal tracheal branches, and obtaining the tracheal tree of the chest CT image. According to the method provided by the invention, the tracheal segmentation precision of extracting the tracheal tree from the CT image is improved and the extraction time is shortened.

The invention discloses a film coating method of a self-expanding stent, which is characterized in that polymer nano-fibers are ejected by utilizing an electrostatic spinning method and cover the net structure surface of the self-expanding stent to form a polymer film. According to the film coating method of the self-expanding stent, a coating film on the outer surface of the stent is composed of the polymer nano-fibers; a fiber film is formed through ejection by utilizing the electrostatic spinning method; a tubular self-expanding stent is sleeved on a drum-type collector and used for collecting nano-fibers following the uniform rotation of the drum-type collector; a plurality of collectors can be arranged in parallel to be a parallel collect group to synchronously carry out film coating on a plurality of stents; and the nano-fibers of the stent coating film contain drugs and developers. The self-expanding film coated stent prepared by utilizing the method has the advantages of simple process, high collection efficiency, and low cost, is environmentally friendly, can be widely applied to interventional therapies of blood vessel, trachea, bronchi, esophagus, alimentary canal, bile duct, nasolacrimal duct and the like and has a wide application prospect.

This invention relates to a treatment device (10) and method of use, and in particular to a treatment device adapted to assist the clearance of bronchial secretions in persons whose cough function is impaired. The invention provides a treatment device having a pump (12) with a negative pressure inlet side (22) and a positive pressure outlet side (24). The device has a breathing tube (14) for connection to a patient, and a pressure sensor (18) adapted to determine the pressure within the breathing tube. A valve (16) selectively connects the breathing tube to the inlet side or the outlet side of the pump whereby to provide cycles of positive and negative pressure within the breathing tube. A controller (26) is provided to control the valve. An indicator (20) alerts the patient to an operational status of the device so that the patient can breathe in time with the device and in particular can seek to cough at the same time as the pressure within the breathing tube is rapidly reduced.

A continuous-region-extraction unit extracts a continuous-region having a voxel value corresponding to an air-region in bronchi from a three-dimensional-medical-image. A tree-structure-construction unit constructs a tree-structure corresponding to the continuous-region. A linear-structure-extraction unit extracts plural linear-structures representing fragments of small-bronchi by analyzing a local density structure in a neighborhood of each point in the three-dimensional-medical-image. A tree-structure-reconstruction unit reconstructs a graph-structure representing the whole bronchi by connecting a node constituting the graph-structure of large-bronchi and a node representing the linear-structures of small-bronchi. At this time, different cost functions are used for a segment connecting the node of the large-bronchi and the node representing the linear-structures of the small-bronchi and a segment connecting the nodes representing the linear-structures to each other. The cost function in the former segment is defined in such a manner that the segment is more likely to be connected as a change in voxel values is smaller.

A method for extracting a terminal bronchial tree from a lung CT image belongs to the field of image processing techniques based on medical science images. The method includes the steps of removing lung area edges in a lung CT image through an area growth method, searching a suspected bronchial tree area according to CT value in a lung area with removed edges, removing non-tracheae tree area in the suspected bronchial tree area to obtain a terminal bronchia, obtaining two end points of the terminal bronchia, generating a center line of the terminal bronchia according to the two end points of the terminal bronchia, and connecting the terminal bronchia with a tracheae tree body along the center line of the terminal bronchia to obtain a bronchial tree. Terminal bronchi are easily missed and not segmented in three-dimensional bronchial tree segmentation, and missing tracheae points are extracted according to CT values and screened according to the morphological characteristics of a tracheae tree and connected to the tracheae tree along the missing tracheae extension lines. The terminal bronchi can be segmented more accurately, and a more complete three-dimensional bronchial tree can be obtained.

The invention provides a power-driven binding instrument used in surgery. The power-driven binding instrument used in the surgery comprises a power-driven general handle and replaceable end actuators, wherein the power-driven general handle controls the replaceable end actuators and provides power for the replaceable end actuators, the replaceable end actuators comprise different types of surgery binding instrument tail ends and are used for carrying out the surgery on human tissue, and standard interfaces are arranged between the power-driven general handle and the replaceable end actuators. Due to the fact that the power-driven binding instrument used in the surgery comprises the general handle and the replaceable end actuators, molding of nails is good, operation is convenient, resources are saved, and pollution is reduced. The power-driven binding instrument used in the surgery can be widely used in surgical operation such as alimentary canals, lungs and bronchi.

According to an insertion support system of the present invention, when a biopsy area is specified at a periphery of the bronchi, the barycenter of the biopsy area is extracted. A circle centering on the barycenter is determined as a search area. The search area is expanded until the bronchi are located within the search area. A point in the search area to which the bronchi first reach is determined as an end point. A first route choice connecting the end point and a start point is determined. If the first route choice has not been registered yet, the first route choice is registered as a first registered route. Accordingly, a location of interest can be specified as an arbitrary region, and navigation leading to the specified region is appropriately set.

According to an insertion support system of the present invention, when a biopsy area is specified at a periphery of the bronchi, the barycenter of the biopsy area is extracted. A circle centering on the barycenter is determined as a search area. The search area is expanded until the bronchi are located within the search area. A point in the search area to which the bronchi first reach is determined as an end point. A first route choice connecting the end point and a start point is determined. If the first route choice has not been registered yet, the first route choice is registered as a first registered route. Accordingly, a location of interest can be specified as an arbitrary region, and navigation leading to the specified region is appropriately set.

A label adding unit adds labels to structures such as a body surface region, a lung region, bronchi, and pulmonary nodules of a human extracted by a structure extraction unit from a three-dimensional image of a chest. An image display control unit displays the three-dimensional image by volume rendering on a display unit. At this time, a label display determination unit determines at least one label to be displayed with the volume rendering image to be displayed based on the opacity during the volume rendering display. A label display control unit displays the determined label with the volume rendering image on the display unit.

A continuous-region-extraction unit extracts a continuous-region having a voxel value corresponding to an air-region in bronchi from a three-dimensional-medical-image. A tree-structure-construction unit constructs a tree-structure corresponding to the continuous-region. A linear-structure-extraction unit extracts plural linear-structures representing fragments of small-bronchi by analyzing a local density structure in a neighborhood of each point in the three-dimensional-medical-image. A tree-structure-reconstruction unit reconstructs a graph-structure representing the whole bronchi by connecting a node constituting the graph-structure of large-bronchi and a node representing the linear-structures of small-bronchi. At this time, different cost functions are used for a segment connecting the node of the large-bronchi and the node representing the linear-structures of the small-bronchi and a segment connecting the nodes representing the linear-structures to each other. The cost function in the former segment is defined in such a manner that the segment is more likely to be connected as a change in voxel values is smaller.

The invention relates to a method for extracting Yulang block to obtain Yulang water extractive, alcohol extractive, polysaccharide and chromocor. Researches have proved that the Yulang water extractive, alcohol extractive, polysaccharide and chromocor can stably reduce hypertension, restrain heart muscle retraction, reduce heart muscle oxygen consumption, improve coronary flux and reduce myocardial ischemia refill hurt, while it can release breath, release the asthma caused by acetylcholine simulation, and resist the retraction of acetylcholine or ergamine on bronchi. And the Yulang water extractive and polysaccharide can resist senile dementia and hepatitis or the like. The invention supplies a novel Chinese drug for treating hypertension, coronary disease, or the like, without side effect.

The invention discloses a method for segmenting and denoising the lung parenchyma through lateral scanning and four-corner rotary scanning. The method includes the steps that firstly, a minimum enclosing rectangle of an ROI lung region of the thoracic cavity is extracted; the minimum enclosing rectangle belonging to which portion of each lung is judged, lateral scanning or four-corner rotary scanning is selected according to the portion to which the minimum enclosing rectangle belongs, seed points are acquired, only lateral scanning is adopted in the upper portion of each lung, either lateral scanning or four-corner rotary scanning is adopted in the middle of each lung, and only four-corner rotary scanning is adopted in the bottom of each lung; eventually, residual trachea noise, main bronchus noise and other noise are removed according to an eight-neighborhood region growing method. The method is simple and easy to achieve, the segmentation speed is very high, for each image in a CT image sequence, a lung region of each image in a PET-CT image sequence can be completely, automatically and accurately segmented according to the method combining an iteration threshold value and morphology.

The embodiment of the invention provides an electromagnetic navigation system for a bronchoscope. The electromagnetic navigation system includes a registration module, a navigation module and a display module. By means of a position image, matched by the registration module, of bronchi in a CT image, a positioning sensor in the navigation module acquires real-time position coordinates of the bronchoscope, a control unit in the navigation module determines correct coordinates corresponding to the real-time position coordinates in the position image according to the real-time position coordinates and a center line, and the display module displays the CT image, the position image, the real-time position coordinates and the correct coordinates. In the process, accurate electromagnetic navigation in the bronchial tree is achieved by correct registration of the registration module and precise navigation of the navigation module.

The invention relates to a pharmaceutical composition for treating bronchitis and asthma. The pharmaceutical composition is prepared from the following components by weight: 40 to 60 parts of aster root, 40 to 60 parts of dandelion, 25 to 35 parts of stemona root, 25 to 35 parts of anemarrhena, 20 to 30 parts of tendrilleaf fritillary bulb, 10 to 20 parts of ephedra stem, 10 to 20 parts of common andrographis herb, 10 to 20 parts of isatis root, 3 to 8 parts of LagotisclarkeiHook.F., 3 to 8 parts of borneol and 3 to 8 parts of dwarf lilyturf root. The ministerial drugs of the pharmaceutical composition are capable of clearing heat, removing toxins, eliminating phlegm, dissipating binds, generating body fluid and moisturizing dryness, thereby eliminating inflammations of bronchi and the lung, and capable of tonifying the spleen and the kidney, thereby eliminating the symptom of difficulty in breathing; the adjuvant and conductant drugs are used for maintenance and protection of the respiratory system and for basis consolidation; drugs of the pharmaceutical composition are compatible and synergistic, so inflammations are eliminated, and the adjuvant and conductant drugs are cooperatively used for alleviation of toxicity and virulence of drugs; and the pharmaceutical composition is used for treating a series of symptoms caused by bronchitis and asthma.

The invention aims at providing a method capable of extracting high-purity vasicine from adhatoda vasica. The high-purity vasicine is prepared by the following methods: after microbial fermentation is performed, performing extracting by using an ethanol solution, filtering, degreasing, vacuum concentration, affinity chromatography, ion-exchange column chromatography, crystallization and the like. A product of the invention has the effects of remarkable uterus excitation effect and the ability of reducing myocardial contractility, reducing coronary artery flow and slightly lowering blood pressure, and also has a good expansion effect on bronchi.

The invention discloses toothpaste capable of treating bronchitis. The total toothpaste body composition of the toothpaste contains a 3-9% of medicine ingredient with a function of killing pyogenic cocci and bacilli, wherein the medicine ingredient is extract of polygonum cuspidatum, euphorbia pekinensis, viola, notopterygium root, galangal and rheum officinale; in the total toothpaste body composition of the toothpaste, the weight percentage of rheum emodin is not less than 0.01%, the weight percentage of euphorbin is not less than 0.01%, the weight percentage of flavonoid glycosides is not less than 0.01%, the weight percentage of columbianetin is not less than 0.02%, the weight percentage of methyl cinnamate is not less than 0.008%, and the weight percentage of physcion is not less than 0.03%. The toothpaste is capable of effectively killing pathogenic bacteria in oral cavity, and preventing the pathogenic bacteria in oral cavity from infecting bronchi.

The invention relates to a method for extracting a tail end bronchial tree from a lung CT image, comprising the following steps: slicing and numbering each original lung CT image according to the same sequence and size to obtain a plurality of image blocks; dividing the image blocks into diseased knots, no tissues or cavity walls, blood vessel or other lung tissues and lung cavity walls, and inputting the image blocks into a convolutional neural network for training. The image slice classification processing can reduce the system complexity, guarantees the integrity of pulmonary nodule characteristics, can be well used for the training of a convolutional neural network, has high sensitivity and low misdiagnosis rate, and enables the convolutional neural network to quickly realize the recognition and positioning of pulmonary nodules in the application.

The invention provides a capsule bronchoscope. The capsule bronchoscope of the present invention includes a main body that can extend into the bronchus and a control terminal located outside the human body. The main body includes a capsule-shaped shell, a power unit, and an imaging detection assembly for photographing the inside of the bronchus. The rear end of the shell There are at least two openings, the openings are provided with a switch for adjusting the opening and closing state of the openings, the camera detection assembly and the power device are located inside the housing, and the power device is located in the opening to drive the main body to move in the bronchi; the power device includes a The airbag and at least two guide vanes that eject airflow through deformation, the airbag ejects airflow through the opening and pushes the main body to advance along the bronchus under the reaction of the airflow, the guide vanes are arranged on the outside of the outlet, and the guide vanes are adjustable relative to the outlet The angle used to change the heading of the body. The invention can conveniently enter the human body for inspection, and has less stimulation to patients.