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169 results about "RESPIRATORY MOVEMENTS" patented technology
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Normal respiratory movements - Respiratory movements introduce oxygen into the alveoli and expel carbon dioxide. The lungs are situated inside the pleural cavity of the thorax and are wrapped in the pleural membrane. The lungs are unable to extend by themselves.
Detection and classification of breathing patterns
InactiveUS6840907B1Medical automated diagnosisRespiratory organ evaluationSensor arrayRESPIRATORY MOVEMENTS
A respiratory analysis system for monitoring a respiratory variable for a patient. The system comprises a sensor array for accommodating a patient to be in contact therewith and a processing means. Then array has a plurality of independent like sensors for measuring respiratory movement at different locations on the patient to generate a set of independent respiratory movement signals. The processing means receives and processes the movement signals to derive a classification of individual breaths using, for each breath, the respective phase and / or amplitude of each movement sensor signal within the set for that breath.
Owner:RESMED LTD
Wireless respiratory and heart rate monitoring system
InactiveUS7740588B1High light transmittanceHigh sensitivityCatheterRespiratory organ evaluationOptical radiationAnimal science
A combined respiratory and heart rate sensor for a mammal has a flexible support with a surface adapted to be positioned over the skin of a mammal. A pair of inductive coil or capacitive plate elements, spaced apart by a foam spacer having openings therein, are attached to the support surface and are capable of independently sensing respiratory movement of the mammal in a direction perpendicular to the support surface and producing an output signal proportional thereto. The heart rate sensor includes an LED attached to the flexible support capable, and at least two light-detecting elements spaced apart from the LED, each capable of independently sensing light radiation reflected through the skin and capillaries from the light-emitting element and producing an output signal proportional thereto. A barrier layer attached to the support shield from the light-detecting elements light radiation that is not emitted from the LED.
Owner:SCIARRA MICHAEL
Human torso phantom for imaging of heart with realistic modes of cardiac and respiratory motion
A human torso phantom and its construction, wherein the phantom mimics respiratory and cardiac cycles in a human allowing acquisition of medical imaging data under conditions simulating patient cardiac and respiratory motion.
Owner:RGT UNIV OF CALIFORNIA
Image-guided lung interventional operation system
InactiveCN102949240AAddress the surgical areaSolving Consistency IssuesDiagnosticsSurgical navigation systemsRESPIRATORY MOVEMENTSRadiology
The invention discloses an image-guided lung interventional operation system which comprises an image acquiring module, a lung region reconstruction module, a lung respiratory movement model construction module, an operative instrument and operative region image space mapping module, a dynamic focus space-positioning and guide module and an another image acquiring module. The image acquiring module is connected with the lung region reconstruction module which is connected with the lung respiratory movement model construction module, the lung respiratory movement model construction module is connected with the dynamic focus space-positioning and guide module, and the another image acquiring module is connected with the operative instrument and operative region image space-mapping module which is connected with the dynamic focus space-positioning and guide module. Real-time space positioning of dynamic focuses is achieved, early diagnosis of carcinogenesis of lung nodule can be achieved, and error of space positioning precision is within 2mm.
Owner:高欣 +1
Method and arrangement for detecting a leak in anesthesia system
A method and arrangement for detecting a leak in an anesthesia system. The method includes controlling respiratory movements by means of ventilator gas flows and measuring the ventilator gas flow added for an inspiration and removed for an expiration. The method also includes supplying a fresh gas flow for a respiration and measuring the fresh gas flow added for the respiration. The method further includes receiving information indicative of the measured gas flows, determining based on said received information both the gas volume added and the gas volume removed and comparing these determined gas volumes to each other. The method also includes determining based on comparing the anesthesia system leakage.
Owner:GENERAL ELECTRIC CO
Device for Monitoring Respiratory Movements
InactiveUS20080015457A1Mortality rate is decreasedReduce rateRespiratory organ evaluationSensorsMotion detectorAccelerometer
The present invention relates to a monitor respiration movements device to be used on humans and also on animals for controlling the respiration movements and to control the apnea periods on infants, wherein the device reduces the mortality rate caused by the sudden instant death syndrome (SIDS), wherein the device comprises an accelerometer and a micro controller, with the accelerometer including a motion detector and a plurality of output plugs, the micro controller includes a plurality of input sockets, and wherein the plurality of output plugs are connected to the plurality of input sockets and the micro controller includes signal outputs which are connected to an alarm.
Owner:BLOCK DAVID CESAR +1
Biometric identification by garments having a plurlity of sensors
ActiveUS20180000367A1Reduce gapEasy to measureElectrocardiographyPerson identificationDiagnostic Radiology ModalityEngineering
Biometric identification methods and apparatuses (including devices and systems) for uniquely identifying one an individual based on wearable garments including a plurality of sensors, including but not limited to sensors having multiple sensing modalities (e.g., movement, respiratory movements, heart rate, ECG, EEG, etc.).
Owner:L I F E
Sleep state estimating device and program product
InactiveUS7429247B2Easy to detectGood estimateRespiratory organ evaluationSensorsSleep stateMedicine
A sleep state of a subject is estimated from respiration signals that are readily detected without restraining the subject. From a voltage waveform based on respiratory movement of a person, positive peak values and the (time) interval between adjacent peaks are calculated. Also obtained is the area of a region that is enclosed by the voltage waveform and a time axis between peaks, and the average value and dispersion value of the obtained inter-peak areas are calculated. The calculated values are used to set a preliminary sleep state value for a given period, and sleep state values over plural periods are factored in to estimate a sleep state at a given time point.
Owner:SANYO ELECTRIC CO LTD
Apparatus, system and method for chronic disease monitoring
ActiveCN102355852AEasy to measureSimple systemHealth-index calculationMedical automated diagnosisDiseaseObstructive Pulmonary Diseases
An apparatus, system, and method for monitoring a person suffering from a chronic medical condition predicts and assesses physiological changes which could affect the care of that subject. Examples of such chronic diseases include (but are not limited to) heart failure, chronic obstructive pulmonary disease, asthma, and diabetes. Monitoring includes measurements of respiratory movements, which can then be analyzed for evidence of changes in respiratory rate, or for events such as hypoponeas, apneas and periodic breathing. Monitoring may be augmented by the measurement of nocturnal heart rate in conjunction with respiratory monitoring. Additional physiological measurements can also be taken such as subjective symptom data, blood pressure, blood oxygen levels, and various molecular markers. Embodiments for detection of respiratory patterns and heart rate are disclosed, together with exemplar implementations of decision processes based on these measurements.
Owner:RESMED SENSOR TECH
Sleep state estimating device and program product
InactiveUS20060009704A1Stable sleep estimationNot easily affectedRespiratory organ evaluationSensorsSleep stateMedicine
A sleep state of a subject is estimated from respiration signals that are readily detected without restraining the subject. From a voltage waveform based on respiratory movement of a person, positive peak values and the (time) interval between adjacent peaks are calculated. Also obtained is the area of a region that is enclosed by the voltage waveform and a time axis between peaks, and the average value and dispersion value of the obtained inter-peak areas are calculated. The calculated values are used to set a preliminary sleep state value for a given period, and sleep state values over plural periods are factored in to estimate a sleep state at a given time point.
Owner:SANYO ELECTRIC CO LTD
Garment for detecting respiratory movement
InactiveUS20100286546A1Avoid formingPrevent slippingRespiratory organ evaluationSensorsElectricityRESPIRATORY MOVEMENTS
A garment for detecting respiratory movement of a living being, wherein the garment can be pulled over the thorax of the living being, including an electric conductor integrable at the height of the thorax of the living being into the garment, which is attached to the garment in order to change an electrically measurable characteristic in dependence on the respiratory movement of the thorax, and a holder for fixing evaluation electronics integrable into the garment, which can be coupled to the electric conductor and which is implemented to detect the electrically measurable characteristic and which further includes an interface for outputting or storing data derived from the electrically measurable characteristic.
Owner:FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
Monitoring respiratory movements device
InactiveUS20050277842A1Mortality rate is decreasedReduce ratePerson identificationInertial sensorsMotion detectorAccelerometer
The present invention relates to a monitor respiration movements device to be used on humans and also on animals for controlling the respiration movements and specially to control the apnea periods on infants. Furthermore the present invention is related to reduce the mortality rate caused by the sudden instant death syndrome (SIDS). The device comprises an accelerometer and a micro controller, said accelerometer includes a motion detector and a plurality of output plugs, said micro controller includes a plurality of input sockets, wherein said plurality of output plugs are connected so said plurality of input sockets and the micro controller includes signal outputs which are connected to an alarm means.
Owner:BLOCK DAVID CESAR +1
Respiration motion stabilization for lung magnetic navigation system
A system for stabilization based on respiratory movement includes a medical device configured to navigate inside of a patient, a tracking sensor affixed on the medical device and configured to track a location of the medical device, at least one motion sensor located on the patient and configured to sense respiratory movements of the patient, a computer configured to generate a respiratory model based on the respiratory movements sensed by the at least one motion sensor for a predetermined period and to stabilize a location of the medical device based on the respiratory model after the predetermined period, and a display configured to display a graphical representation of the medical device based on the stabilized location on a pre-procedure two-dimensional (2D) image or three-dimensional (3D) model.
Owner:TYCO HEALTHCARE GRP LP
Method for extracting respiratory movement parameter from one-arm X-ray radiography picture
ActiveCN101773395AWide applicabilityImprove securityImage analysisRadiation diagnosticsDigital signal processingHuman body
The invention relates to a method for extracting a respiratory movement parameter from a one-arm X-ray radiography picture, which belongs to the crossed field of digital signal processing and medical imaging, and aims at separating the respiratory movement from the complex movement of an actual human body heart. The method comprises the following steps: selecting a group of architectural feature points (including the head and tail points of a vessel section) on a coronal artery vessel and tracking the motion curve of the architectural feature point along with the time in a sequence; and separating to obtain a bi-dimensional respiratory movement curve by the Fourier expansion and frequency-domain filtering method. In addition, in the invention, in order to describe the respiratory movement more intuitively and effectively, the bi-dimensional respiratory movement obtained from two different radiography visual angles is rebuilt according to the three-dimensional reconstruction theory of the mid point of a radiography system, therefore the three-dimensional respiratory movement is obtained. The invention has the advantages of better extracting result of the respiratory movement and wider applicability and flexibility, and meets clinical requirements.
Owner:HUAZHONG UNIV OF SCI & TECH
Respiratory motion determination apparatus
ActiveUS20140133717A1Improved respiratory motion compensationGood compensationImage enhancementMedical imagingRespiratory gatingIntermediate image
The invention relates to a respiratory motion determination apparatus for determining respiratory motion of a living being (3). A raw data providing unit (2) provides raw data assigned to different times, wherein the raw data are indicative of a structure like the apex of the heart muscle, which is influenced by cardiac motion and by respiratory motion, and a reconstruction unit (6) reconstructs intermediate images of the structure from the provided raw data. A structure detection unit (7) detects the structure in the reconstructed intermediate images, and a respiratory motion determination unit (10) determines the respiratory motion of the living being based on the structure detected in the reconstructed intermediate images. This allows determining respiratory motion with high accuracy, without relying on, for example, a stable correlation between a tracking signal of an external respiratory gating device and respiratory phases.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV
Arrangement and method for supplying breathing gas for respiration
InactiveUS20110197889A1RespiratorsOperating means/releasing devices for valvesRESPIRATORY MOVEMENTSBreathing gas
An apparatus and method for supplying a breathing gas for a respiration. The apparatus includes a reciprocating unit configured to receive an inspiration gas flow and adapted to control respiratory movements. The apparatus also includes a gas mixer for supplying a fresh gas flow. The apparatus also includes a breathing circuit configured to conduct an expiration gas flow to the reciprocating unit and to conduct the fresh gas flow from the gas mixer for the respiration and to conduct the gas flow from the reciprocating unit for an inspiration, the breathing circuit comprising a CO2 remover configured to remove carbon dioxide from the gas. The apparatus also includes a first bypass passage configured to permit bypassing the reciprocating unit and connecting the breathing circuit to the inspiration gas flow upstream from the reciprocating unit.
Owner:GENERAL ELECTRIC CO
Processing apparatus and processing method for determining a respiratory signal of a subject
ActiveUS10758164B2Reliably determinedEffort controlAcceleration measurement using interia forcesInertial sensorsPhysical medicine and rehabilitationRESPIRATORY MOVEMENTS
Owner:KONINKLJIJKE PHILIPS NV
Dynamic three-dimensional reconstruction method of single-arm X-ray angiogram maps
ActiveCN101799935AImprove reconstruction accuracyOvercome limitationsImage analysisRadiation diagnosticsReconstruction methodX-ray
The invention relates to a dynamic three-dimensional reconstruction method of single-arm X-ray angiogram maps, which belongs to the field of the intersection of digital image processing and medical imaging and aims to meet the requirements of the auxiliary detection and surgical navigation of cardiovascular diseases in clinical medicine. The invention provides a concept of 'dynamic vessel three-dimensional reconstruction', so that the angiogram maps of double visual angles at different moments are compensated for respiratory movement and cardiac movement. The dynamic three-dimensional reconstruction method can obtain the high three-dimensional reconstruction accuracy of coronary artery vessels, solve the problem that the automatic and reliable three-dimensional reconstruction is performed by multi-visual angle angiography maps with different time phases, assist in the detection and surgical navigation of the cardiovascular diseases effectively and meet the clinical requirement.
Owner:HUAZHONG UNIV OF SCI & TECH
Non-invasive in-vitro tumor positioning system and method by fixing mark points
The invention relates to a non-invasive in-vitro tumor positioning system and method by fixing mark points. A concept of time is introduced based on the three-dimensional radiation technology. Displacement errors of movement of an anatomical structure in a treatment process and movement of the anatomical structure among every-time treatment processes are fully considered, and the displacement errors include situations in the aspect of change of radiation dose distribution and influence on a treatment plane due to respiratory movement, setup errors, target area contraction and the like. Real-time monitoring can be performed on cancers and health organs by utilizing various advanced imaging devices before treatment of patients or during treatment of the patients, and treatment conditions can be adjusted according to changes of the positions of the organs to enable an irradiation filed to tightly follow a target area. Therefore, accurate treatment can be achieved actually. Generally speaking, the mark points are placed through denture when the cancers in the head or the neck are positioned. Due to the fact that the denture is fully meshed with patients' teeth, the positions of the mark points are firm.
Owner:YITI INTELLIGENT TECH LTD SHENZHEN CITY
Fixing device used for fixing back skin of experimental animal
The invention relates to a fixing device used for fixing the back skin of an experimental animal. The fixing device used for fixing the back skin of the experimental animal comprises a base and fixing tables, wherein each fixing table comprises a connecting part and a fixing and clamping part connected with the connecting part, the fixing tables are connected with the base in a detachable mode through the connecting parts, the fixing and clamping parts of the two fixing tables are matched to form a fixing through hole allowing the experimental animal to pass through, and the end faces, away from the connecting parts, of the two fixing and clamping parts are matched to clamp the back skin of the experimental animal so that the back skin which is pulled up of the experimental animal can be spread on the outer walls of the fixing and clamping parts. The fixing device used for fixing the back skin of the experimental animal has the advantages that the back skin of the experimental animal can be fixed, negative influence of respiratory movement of the experimental animal on imaging is effectively avoided, damage to the experimental animal is small due to the fact the non-invasive fixing method is adopted, and long-time and stable observation and study of a subcutaneous transplantation tumor model on the back of the experimental animal by means of a photoacoustic imaging system is available.
Owner:SHENZHEN INST OF ADVANCED TECH
Respiratory motion compensation method for lung percutaneous puncture
ActiveCN111067622AEffective compensationOvercome the disadvantage of not being able to explain physiological movementsSurgical needlesRespiratory organ evaluationEmergency medicineRespiratory signal
The invention discloses a respiratory motion compensation method for lung percutaneous puncture. The method comprises the following steps: constructing a four-dimensional visualization model by usingpre-operative 4DCT images; extracting a respiratory movement trajectory, selecting a target point and a skin insertion point based on the four-dimensional visualization model and respiratory movementtrajectory, forming a puncture path, and determining an initial position, direction and puncture depth of a puncture needle; and during intraoperative puncture needle insertion, acquiring respiratorysignals of a patient in real time by a respiratory monitoring device, inputting the respiratory signals into a control system of a puncture robot, and analyzing characteristic parameters of the respiratory signals by the control system to guide the puncture robot to iteratively adjust the needle insertion speed to ensure that a needle tip reaches the target point at a specified time, so as to compensate for tumor displacement caused by breathing. The method provided by the invention allows puncture to be performed in a state of free breathing, has a wider application range, and helps to reducepain of the patient and improve the success rate of surgery.
Owner:TIANJIN UNIV
Respiration measurement method based on camera and spherical marker
ActiveCN107260173ALow costEasy to useCharacter and pattern recognitionRespiratory organ evaluationHuman bodyRespiratory frequency
The invention provides a respiration measurement method based on a camera and a spherical marker. The spherical marker attaches to the chest and abdomen of the human body, the images of the marker are collected by adopting the camera, the distance change between the marker and the camera can cause the change of the imaging size of the marker in the camera, by extracting the contour radius of the imaging region of the marker and recording the size change of the contour radius of the region in the continuous images, the respiration movement of the human body can be reflected, the respiration movement mode of the human body can be tracked, and the respiration frequency can be calculated. According to the respiration measurement method provided by the invention, the tracking on the respiration mode and the calculation for the respiration frequency are realized through the simple spherical marker and the camera, so that the connection of the expensive sensor and the discomfort caused to the human body are avoided, in addition, the complex tracking and calculating algorithm in other image measurement respiration algorithms are also avoided, and the respiration measurement method is beneficial for the measurement for the respiratory frequency and the tracking for the respiration mode in daily life.
Owner:DALIAN UNIV OF TECH
Method and apparatus for respiratory monitoring
InactiveUS20090030335A1Accurate detectionRespiratorsOperating means/releasing devices for valvesPhase differenceRESPIRATORY MOVEMENTS
The method and the apparatus are used for monitoring a patient's breathing. A respiratory movement of the patient is detected by means of a thoracic expansion sensor that is placed near the rib cage and by means of an abdominal expansion sensor that is placed near the abdomen. Moreover, a phase difference is detected between a thoracic measuring signal delivered by the thoracic expansion sensor and an abdominal measuring signal delivered by the abdominal expansion sensor. The phase difference thus detected is monitored to determine whether it exceeds at least a phase threshold or whether it increases over time, and the presence of a disorder in the respiratory tract of the monitored patient is recognized on the basis of an increasing phase difference.
Owner:KUCHLER GERT
Six-degree-of-freedom respiratory compensation needle puncture robot compatible with CT
PendingCN113081282AEnable Compatible CT ImagingGuaranteed fixed effectSurgical needlesVaccination/ovulation diagnosticsRespiratory compensationHuman body
The invention discloses a six-degree-of-freedom respiratory compensation needle puncture robot compatible with CT. The robot comprises a wearable vest guide rail module, a breathing movement self-adaptive robot needle seat module and a puncture needle six-degree-of-freedom robot module. The wearable vest guide rail module is used for supporting the breathing movement self-adaptive robot needle seat module and driving the breathing movement self-adaptive robot needle seat module to perform posture adjustment and adaptation, and the puncture needle six-degree-of-freedom robot module is used for performing biopsy puncture operation and movement; the puncture needle six-degree-of-freedom robot module comprises a four-degree-of-freedom posture adjusting module and a needle inserting module, and a biopsy puncture needle on the needle inserting module is driven to perform biopsy detection cooperative movement in a breathing compensation following manner through cooperation of the four-degree-of-freedom posture adjusting module and the needle inserting module. According to the invention, no metal compact object exists in the CT section in the needle puncture operation process, the operation process is compatible with CT imaging, and the height distance of the puncture robot relative to the human body does not change along with breathing movement and can reach all puncture points.
Owner:ZHEJIANG UNIV
Lung rehabilitation training instrument and using method thereof
PendingCN111494801AIncrease engagementImprove complianceRespiratorsElectrotherapyAbdominal movementsRESPIRATORY MOVEMENTS
The invention discloses a lung rehabilitation training instrument. The instrument comprises a host, a respiratory rate sensor and an upper limb movement device and / or an abdomen movement device, the respiratory rate sensor is electrically connected with the host, the respiratory rate sensor is used for sensing a respiratory rate of a trainer in real time, the upper limb movement device and / or theabdomen movement device selects a pneumatic movement device and / or an electric movement device, the respiratory rate of a trainee is sensed in real time through the respiratory rate sensor, the upperlimb movement device and / or the abdomen movement device is matched with the respiratory rate, the upper limb movement device synchronously drives double upper limbs to swing, and the abdomen movementdevice synchronously drives the abdomen to contract and expand, so that the double upper limbs and the abdomen move along with the respiratory rate. According to the lung rehabilitation training instrument and the using method thereof, lung function rehabilitation of a trainee can be assisted, and effective and regular respiratory movement can be recovered.
Owner:GUANGZHOU XIAOKANG MEDICAL TECH CO LTD
Respiratory gating indication method used for radiotherapy and apparatus thereof
InactiveCN102512764ACooperate wellReduce the impactNon-electrical signal transmission systemsRadiation therapyRespiratory gatingMedical equipment
The invention, which belongs to the medical equipment technology field, relates to a respiratory gating indication method used for radiotherapy and an apparatus thereof. The method comprises the following steps that: a remote controller that includes a CPU microprocessor, an arrangement key, control keys, a liquid crystal display, an infrared remote controlled coding circuit and an emitting device of the circuit is arranged; an infrared reception and decoding circuit, a second CPU microprocessor, an auxiliary LED indicating lamp and a nixie tube display are arranged; an indicator comprising a third CPU microprocessor, a drive circuit, a main LED indicating lamp and a sounder is arranged; and a power source is arranged. According to the invention, clear light and sound indication can be provided for a patient; therefore, an influence of a respiratory movement can be effectively reduced; localization precision of thoracic-abdominal tumor radiation therapy target region can be substantially improved; unnecessary irradiation on a normal organ and a normal part can be effectively avoided; and occurrences of phenomena of damage and necrosis of normal cells can be avoided or reduced. Besides, the apparatus is cheap and can be applied conveneitnly. Moreover, the method and the apparatus can be widely applied to radiation therapy of several kinds of tumors like a thoracic tumor, an abdominal tumor, a lung tumor, a liver tumor, a renal tumor and a breast tumor and the like.
Owner:HOSPITAL ATTACHED TO QINGDAO UNIV
Cardiac magnetic resonance real-time film imaging method and system
ActiveCN103006217AAvoid tedious and complicated post-processingExtended imaging acquisition timeDiagnostic recording/measuringSensorsCardiac cycleRESPIRATORY MOVEMENTS
The invention provides a cardiac magnetic resonance real-time film imaging method and system, and is suitable for the technical field of medical information. The method comprises the following steps of: monitoring respiratory movement of a subject; judging whether the respiratory movement enters to the last period of expiration or not; and if so, fixing each cardiac imaging layer one by one, collecting cardiac film imaging data in one cardiac cycle until all imaging layers of the whole cardiac are collected, and if not, continuously monitoring the respiratory movement of the subject. The method is in combination with a respiratory navigation technology; the cardiac real-time film imaging data of the last period of expiration can be directly collected; the complex posttreatment processes needed by the existing real-time film imaging data are avoided; the imaging collection time is not obviously prolonged; the data processing procedure is greatly simplified; the method is closer to clinical practical application, simple and convenient; and the method has excellent practical applicability and excellent clinical application prospect.
Owner:SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
4D-CBCT imaging method based on motion compensation learning
ActiveCN110390361ASuppresses streaking artifactsImprove easy to loseImage analysisCharacter and pattern recognitionComputed tomographyRESPIRATORY MOVEMENTS
The invention discloses a 4D-CBCT imaging method based on motion compensation, and belongs to the field of computed tomography. The method comprises the following steps: firstly, acquiring high-quality 4D-CBCT data of a patient, and dividing the high-quality 4D-CBCT data into samples and label data; then, requiring a motion compensation learning convolutional neural network of 4D-CBCT data to be constructed, wherein the network is used for establishing mapping between different phase images; secondly, training the network by taking the sample and the label data as inputs to obtain an optimal network parameter weight; and finally, reconstructing 4D-CBCT projection data under clinical scanning with the assistance of the network, and acquiring a high-quality reconstructed image. According tothe method, reconstruction blurring caused by respiratory movement and noise and artifacts caused by data acquisition angle loss can be reduced to a great extent, the scanning period can be shortened.The radiation damage to a subject can be reduced, the quality requirements of clinical analysis and diagnosis can be met, and the tracking efficiency of lung tumors can be improved.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
Respiratory-self-adaptation portable oxygen generator
PendingCN108939246AEasy to adjustReduce sensitivityRespiratorsMedical devicesRESPIRATORY MOVEMENTSEngineering
Owner:CONTEC MEDICAL SYST
Method and device for anesthetizing fish
InactiveCN105979774AGuaranteed survivalAnesthesia safetyPisciculture and aquariaVeterinary instrumentsCell membraneGaseous oxygen
To safely and practically simply anesthetize fish over a long period of time in an underwater environment which contains a high concentration of carbon dioxide having an anesthetic effect. By contacting gaseous oxygen-containing microbubbles with the branchial epithelial cell membrane surface of fish, a difference between partial pressures [(partial pressure of gaseous oxygen) - (partial pressure of oxygen dissolved in branchial capillary vessels)], which is larger than a difference between partial pressures [(partial pressure of oxygen dissolved in water) - (partial pressure of oxygen dissolved in branchial capillary vessels)], is created so that the amount of oxygen taken into branchial plate capillary vessels is remarkably increased. Thus, the fish can be anesthetized with carbon dioxide over a long period of time at a water temperature (about 20 DEG C) commonly employed for handling fishes while avoiding respiratory failure that occurs during spontaneous respiratory movements suppressed by the anesthesia.
Owner:MARINE BIOTECH MASSACHUSETTS
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