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126 results about "Blood gase" patented technology

System for combined transcutaneous blood gas monitoring and vacuum assisted wound closure

A method and apparatus for the transcutaneous monitoring of blood gases generally comprises a blood gas data acquisition device, a vacuum source and a blood gas transducer unit. The blood gas transducer unit is adapted for application to a patient's skin and administration of a local vacuum at the area of patient application. It further comprises an electrochemical blood gas transducer, well known to those of ordinary skill in the art, which is disposed entirely within the local vacuum at the area of patient application. The vacuum source is placed in fluid communication with the blood gas transducer unit, through a hydrophobic membrane filter for safety purposes, in order to induce a condition of hyperperfusion in the locality of the electrochemical blood gas transducer. Under the control of a microcontroller, or equivalent means, the blood gas acquisition device is then utilized to capture a measure of skin surface oxygen or carbon dioxide pressure. The microcontroller can then utilize this measure to arrive at an estimate of arterial partial pressure of oxygen or carbon dioxide, accordingly. Because vacuum induced perfusion produces the requisite condition of hyperperfusion without local heating and, therefore, without acceleration of the local metabolic function, the present invention results in more accurate than previously available estimates of partial pressure blood gas pressures and does so while eliminating a significant risk for injury to the patient.
Owner:KCI LICENSING INC

System for combined transcutaneous blood gas monitoring and negative pressure wound treatment

A method and apparatus for the transcutaneous monitoring of blood gases generally comprises a blood gas data acquisition device, a vacuum source and a blood gas transducer unit. The blood gas transducer unit is adapted for application to a patient's skin and administration of a local vacuum at the area of patient application. It further comprises an electrochemical blood gas transducer, well known to those of ordinary skill in the art, which is disposed entirely within the local vacuum at the area of patient application. The vacuum source is placed in fluid communication with the blood gas transducer unit, through a hydrophobic membrane filter for safety purposes, in order to induce a condition of hyperperfusion in the locality of the electrochemical blood gas transducer. Under the control of a microcontroller, or equivalent means, the blood gas acquisition device is then utilized to capture a measure of skin surface oxygen or carbon dioxide pressure. The microcontroller can then utilize this measure to arrive at an estimate of arterial partial pressure of oxygen or carbon dioxide, accordingly. Because vacuum induced perfusion produces the requisite condition of hyperperfusion without local heating and, therefore, without acceleration of the local metabolic function, the present invention results in more accurate than previously available estimates of partial pressure blood gas pressures and does so while eliminating a significant risk for injury to the patient.
Owner:KCI LICENSING INC

Disposable, integrated, extracorporeal blood circuit

A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a venous blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.
Owner:MEDTRONIC INC

Diagnosis and/or therapy using blood chemistry/expired gas parameter analysis

Methods and systems for diagnosing disorders, including, for example, disordered breathing, involve sensing one or more of a blood chemistry parameter and / or an expired gas parameter, such as expired respiratory gas concentration, blood gas concentration, and blood pH. Diagnosis of the disorder may be performed by a medical device, such as a respiratory therapy device or a cardiac therapy device, based on implantably detected blood gas / pH concentration / level or externally detected expired respiratory gas concentration. Cardiac and respiratory therapies for addressing the disorder may be adjusted based on the detected parameters.
Owner:CARDIAC PACEMAKERS INC

Method and device for measuring blood gas parameters

The invention relates to a method and device for measuring blood gas parameters, preferably pH, pCO2, and pO2, in a blood sample, where the blood sample of a patient is fed into at least one measuring cell of an analyzer. In order to obtain accurate values for the blood gas parameters even in cases where the temperature of the patient deviates from normal temperature, the temperature of the patient or blood sample is measured upon sample withdrawal, and the measured temperature is transmitted to the analyzer or is recorded by the analyzer, and the temperature of the measuring cell of the analyzer is adjusted to the measured temperature by cooling or heating.
Owner:ROCHE DIAGNOSTICS OPERATIONS INC

Extracorporeal blood circuit priming system and method

A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a venous blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.
Owner:MEDTRONIC INC

Determining blood gas saturation based on measured parameter of respiration

Systems and methods provide for determining blood gas saturation based on one or more measured respiration parameters. A parameter of respiration is measured implantably over a duration of time. The measured respiratory parameter is associated with a blood gas saturation level. Blood gas saturation is determined based on the measured respiration parameter. At least one of associating the measured respiratory parameter and determining blood gas saturation is preferably preformed implantably.
Owner:CARDIAC PACEMAKERS INC

Non-invasive determination of cardiac output, gas exchange and arterial blood gas concentration

A system and method for monitoring the arterial gas concentrations of a patient receiving percutaneous oxygenator support. The system comprises a percutaneous oxygenator for providing medical gases to the venous system of the patient via a catheter. Gases are also removed from the venous system via a catheter. The concentrations and flow rates of the gases provided and removed from the patient are monitored. A CPU analyzes the concentration and flow rate information to compute the arterial gas concentration of the patient.
Owner:GENERAL ELECTRIC CO

Controlling arterial blood gas concentration

A system for controlling an amount of at least one gas X in a subject's lung to target at least one end tidal partial pressure of at least one gas X (PetXT) uses a control system for controlling the gas delivery device, wherein the control system implements a sequential gas delivery system and a feedback algorithm which compares a PetXT for a respective breath of variable size and preferably a respective current PetX value measured by a measurement system, to obtain an error signal, the feedback algorithm adapted for generating a control signal based on the error signal, the control signal determining the amount of gas X to be inspired by the subject in at least a first portion of a respective ensuing respective inspiratory cycle to target PetXT for the respective interval.
Owner:THORNHILL SCI INC

Discrimination of cheyne -stokes breathing patterns by use of oximetry signals

InactiveCN102458245AMedical data miningDiagnostic recording/measuringBlood gas measurementsBiology
Methods and apparatus provide Cheyne-Stokes respiration (CSR) detection based on a blood gas measurements such as oximetry. In some embodiments, a duration, such as a mean duration of contiguous periods of changing saturation or re- saturation occurring in an epoch taken from a processed oximetry signal, is determined. An occurrence of CSR may be detected from a comparison of the duration and a threshold derived to differentiate saturation changes due to CSR respiration and saturation changes due to obstructive sleep apnea. The threshold may be a discriminant function derived as a classifier by an automated training method. The discriminant function may be further implemented to characterize the epoch for CSR based on a frequency analysis of the oximetry data. Distance from the discriminant function may be utilized to generate probability values for the CSR detection.
Owner:RESMED LTD

Methods and systems for control of gas therapy

InactiveUS20050061323A1Mitigate carbon dioxide instabilitySuppress the disordered breathingRespiratorsElectrocardiographyBlood gas testPositive airway pressure device
A gas therapy system involves sensing the blood gas concentration of the patient and adapting a gas therapy based on the sensed gas concentration. Disordered breathing may be detected bases on blood gas concentration, and gas or cardiac electrical therapy may be adapted to treat the detected disordered breathing. One or more of sensing the blood gas concentration, detecting disordered breathing, or adapting the therapy may be performed at least in part implantably. The gas therapy is delivered to the patient through an external respiratory device, such as a positive airway pressure device.
Owner:CARDIAC PACEMAKERS INC

Active air removal from an extracorporeal blood circuit

A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a venous blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.
Owner:MEDTRONIC INC

Linkage control device and blood gas analyzer adopting same

The invention relates to a linkage control device. The linkage control device comprises a power unit and a rotating component provided with bosses, wherein the power unit generates power to drive the rotating component to rotate. The linkage control device also comprises valve components, a signal control unit, sensing switches and sensing pins, wherein the valve components are matched with the bosses of the rotating component in a pushing manner; the signal control unit controls the start or stop of the power unit; the sensing switches are connected with the signal control unit via signals; and the sensing pins are arranged together with the sensing switches in pairs and are arranged on the rotating component. The linkage control device can realize accurate control of time sequences of various liquid and gas switches, avoid disorders caused by mutual influence in the process, minimize the cost and achieve the best control effect. Besides, the linkage control device has simple structure, lower cost and stable and accurate linkage guarantees.
Owner:EDAN INSTR

Device and method for determining a partial carbon dioxide pressure in a subject of interest

The present invention relates to a device (30) and a related method for determining a blood gas partial pressure in blood in a circulatory system of a subject (12) of interest. Also a system for ventilating a patient is disclosed. Temperature-related measurement values indicative of given blood temperature levels are detected. Oxygen saturation measurements of the blood of said subject (12) under consideration of said temperature-related measurement values are derived. A blood gas partial pressure of a monitored subject (12) from said derived oxygen saturation measurements is determined under consideration of present blood temperature levels of said subject (12). Preferably, pH-representative values attributable to present blood pH-values of the subject (12) are determined. More preferably, the pH-representative values are derived from an oxygen dissociation curve under consideration of changes in said derived oxygen saturation measurements of the blood attributable to detected temperature-related measurement values of the subject's blood.
Owner:KONINKLJIJKE PHILIPS NV

Point-of-care testing system for blood gases and co-oximetry

A cartridge and system involving a joint spectroscopic and biosensor blood analyzer for measurement of at least two hemoglobin species in a patient's blood sample by spectroscopy, and measurement of at least pH of the blood sample by biosensor, for assessing the patient's oxygenation and acid-base status. The cartridge comprises a housing having a first housing member and a second housing member bonded together by a gasket. The housing comprises a cartridge inlet; a blood storage conduit; an optical chamber; a biosensor conduit; a waste receptacle; a vent; an air bladder, an air bladder exit port; and, an optical window and an aligned optical member, the aligned optical member being one of a reflecting member or a second optical window, and being positioned to align with at least a portion of the optical chamber and at least a portion of the optical window.
Owner:RELAY MEDICAL CORP

A construction method for a rat hypoxia simulation model of a highland low pressure hypoxia simulation chamber

The invention provides a construction method for a rat hypoxia simulation model of a highland low pressure hypoxia simulation chamber. The method comprises the following steps: firstly, performing treadmill tests on experimental rats and screening out hypoxia-sensitive rats by simulating an environment with an altitude of 3500 meters in the highland low pressure hypoxia simulation chamber; secondly, selecting hypoxia-sensitive rats randomly and placing the selected rats in the highland low pressure hypoxia simulation chamber; thirdly establishing conditions for experimental rat hypoxia simulation of the highland low pressure hypoxia simulation chamber; fourthly, identifying the blood gas biochemical indexes and pathological indexes of the hypoxia-sensitive rats after hypoxia for 24-120h . The method is simple and easy to implement, is high in model making success rate, can truly reflect hypoxia injury conditions of animals and is high in stability.
Owner:贾正平

Intelligent isolated organ long-term maintenance device

The invention aims to provide an intelligent isolated organ long-term maintenance device and aims to solve the problem of long-term preservation of isolated organs. The intelligent isolated organ long-term maintenance device is characterized by comprising a perfusion module, a dialysis module, an oxygenation and blood gas regulation module, an automatic blood flow control module and a temperaturecontrol module, wherein the perfusion module is sequentially connected with the dialysis module, the oxygenation and blood gas regulation module, the automatic blood flow control module and the temperature control module to form a closed loop.
Owner:THE FIRST AFFILIATED HOSPITAL OF SUN YAT SEN UNIV

Integrated kit and matched device and using method thereof

ActiveCN110927398AImprove securityHigh spatial integrationBiological testingMedical diagnosisChipset
The invention belongs to the technical field of medical blood gas biochemical detection equipment, and relates to an integrated kit and a matched device thereof. The matched device consists of an integrated kit, an interface seat assembly, an analyzer bracket, a guide rail and a liquid path system; the integrated kit is composed of an encryption chip assembly, a kit body, a waste liquid bag assembly, a kit cover, a cleaning liquid bag assembly and a reagent bag assembly; and a cleaning liquid bag, a waste liquid bag and various standard liquid reagent bags are all internally packaged and sealed in the independent integrated kit in a combined and double-layer sealing mode. A double-needle layout is adopted on the waste liquid exhaust assembly, one needle is responsible for recovering wasteliquid, and the other needle is responsible for exhausting or overflowing the waste liquid; and once the waste liquid bag is filled with waste liquid or the waste liquid overflows along with gas, thewaste liquid can be reliably and completely recycled through the liquid path system, the safety of an operator is guaranteed to the maximum extent, and the integrated kit and the matched device can beapplied to medical diagnosis and clinical treatment of pneumonia infected by similar novel coronaviruses and used in cooperation with a blood gas biochemical analyzer.
Owner:NANJING PERLONG MEDICAL EQUIP

Carbon dioxide biochemical analysis dry plate and preparation method thereof

The invention relates to a carbon dioxide biochemical analysis dry plate and a preparation method thereof, and belongs to the technical field of blood-gas biochemical sensors. The dry plate is used for detecting the concentration of carbon dioxide in a body fluid, and comprises a supporting layer, an insulating layer, a salt bridge, electrodes, a reference layer, a carbonate ion selective membrane and a buffering layer. According to the preparation method, metal / metal salt thin slice electrodes are prepared, the reference layer is attached onto the electrodes, the ratio of sodium chloride to potassium chloride in the reference layer and the water content of the reference layer are constant, the carbonate ion selective membrane and the buffering layer are sequentially attached onto the solid reference layer, carbon dioxide selective electrodes are prepared, and hydroxyl vinyl resin is utilized as a bonding agent for the carbonate ion selective membrane. The prepared dry plate provided by the invention overcomes the defects that the conventional ion selective electrode is complex to operate, high in use cost and maintenance cost, slow in response, not easy to carry, and the like, and has the advantages of being simple to operate, high in response speed, small in size, simple in preparation process, low in production cost, and suitable for industrialized production.
Owner:吴国清

Discrimination of cheyne -stokes breathing patterns by use of oximetry signals

InactiveCN104757975ADiagnostic signal processingMedical data miningBlood gas measurementsBiology
Methods and apparatus provide Cheyne-Stokes respiration (“CSR”) detection based on a blood gas measurements such as oximetry. In some embodiments, a duration, such as a mean duration of contiguous periods of changing saturation or re-saturation occurring in an epoch taken from a processed oximetry signal, is determined. An occurrence of CSR may be detected from a comparison of the duration and a threshold derived to differentiate saturation changes due to CSR respiration and saturation changes due to obstructive sleep apnea. The threshold may be a discriminant function derived as a classifier by an automated training method. The discriminant function may be further implemented to characterize the epoch for CSR based on a frequency analysis of the oximetry data. Distance from the discriminant function may be utilized to generate probability values for the CSR detection.
Owner:RESMED LTD

Drug for treating gastrectasia and preparation method thereof

InactiveCN104399040AHyperperistalsisDredge virtual fireHeavy metal active ingredientsDigestive systemSide effectOfficinalis
The invention relates to a drug for treating gastrectasia and a preparation method thereof. The drug is prepared from bighead atractylodes rhizome, pinellia ternate, endothelium corneum gigeriae galli, raw yam, rhizoma zingiberis, reddle, radices paeoniae alba, mangnolia officinalis and ginger by combination, can invigorate the spleen, supplement qi, eliminate dampness, induce diuresis, invigorate the spleen and the stomach, promote salivation, benefit lung, reinforce kidneys, arrest seminal emission, accelerate peristalsis hyperfunction, invigorate qi, benefit blood, regulate the blood qi, soothe liver of people, remove liver deficiency fire, relieve pain, diminish inflammation, promote the circulation of qi and remove qi stagnation, dry dampness, eliminate fullness, appetize and strengthen spleen, promote appetite and treat dyspepsia, has an exact curative effect of treating stomach duct pain, nausea, emesis, aphagosis and the like and has no side effects.
Owner:高春娟

Calcium ion selective membrane and preparation method thereof

The invention relates to a calcium ion selective membrane and a preparation method thereof, and belongs to the technical field of blood gas biochemical sensors. The calcium ion selective membrane is used for detecting the concentration of calcium ions in body fluid. The calcium ion selective membrane comprises a macromolecule binding agent, an ion carrier, a carrier solvent, an anion interference agent and a surface active agent. The macromolecule binding agent, the ion carrier, the carrier solvent, the anion interference agent and the surface active agent are dissolved in an ethyl acetate solution, and coating and drying are performed to obtain the calcium ion selective membrane. The prepared calcium ion selective membrane overcomes the defects that the carrier solvent of a traditional ion selective membrane leaks and the strength of the membrane is not high. The prepared calcium ion selective membrane is high in strength, good in tenacity, high in measurement precision, good in long-term stability and low in lower detection limit, the preparation method is simple, the production period is short, the production cost is low, and the calcium ion selective membrane is suitable for large-scale industrial production.
Owner:吴国清

Heart rate and body temperature detection earphone and system and method for monitoring human health

The invention relates to a heart rate and body temperature detection earphone and a system and method for monitoring human health. The earphone comprises a shell assembly, a main control PCB, a horn unit, a power supply module, a body temperature sensor and a heart rate and blood oxygen sensor, wherein the shell assembly comprises an ear rod shell and a shell cover which are connected with each other; the main control PCB is arranged in the ear rod shell; the horn unit, the power supply module, the body temperature sensor and the heart rate and blood oxygen sensor are all connected to the maincontrol PCB; the ear rod shell comprises a PCB shell part and a front sound cavity shell part which are communicated with each other; the front sound cavity shell part is placed in an ear of a person; a first opening is formed in the position, corresponding to the tragus incisura of the ear of the person, of the front sound cavity shell part; the body temperature sensor penetrates out of the first opening, makes close contact with the tragus incisura of the ear of the person and is exposed out of the shell assembly; the heart rate and blood oxygen sensor is in close contact with the tragus position of the human ear.
Owner:深圳市鼎亮科技有限公司

Dry plate for biochemical analysis of chloride ions and preparation method thereof

The invention relates to a dry plate for biochemical analysis of chloride ions and a preparation method thereof and belongs to the technical field of blood-gas biochemical sensors. The dry plate is used for detecting the chloride ion concentration of a body fluid and comprises a supporting layer, an insulating layer, a salt bridge, a silver / silver chloride electrode and a polymeric membrane. The silver / silver chloride electrode is prepared, the polymeric membrane is attached to an electrode silver chloride layer, chloride ion selection electrodes are prepared, the salt bridge is sealed in the insulating layer, the two chloride ion selection electrodes is in bonded with the supporting layer and the insulating layer to assemble the dry plate, and breakover between a fluid to be detected and a reference fluid is achieved through the salt bridge. Different from other ion selection electrodes, the dry plate uses the polymeric membrane to replace the reference fluid and an ion-selective membrane in a traditional chloride ion selection electrode, is simple in operation, high in response speed, small in size, convenient to carry, simple in preparation process, low in production cost and suitable for large-scale industrial production.
Owner:吴国清

Flowing path system

The invention relates to a flowing path system, which is used for a blood gas electrolyte analysis instrument or an electrolyte analysis instrument. The flowing path system comprises a flowing path control part, a sampling part, a sample analysis part, a reagent part and a gas source forming part, wherein the sampling part, the sample analysis part, the reagent part and the gas source forming partare connected with the flowing path control part respectively; the sampling part is connected with the sample analysis part; the reagent part comprises a reagent bag and a waste liquid bag; a reagententers the flowing path system through the reagent bag, and flows into the waste liquid bag sequentially through the flowing path control part, the sampling part, the sample analysis part and the flowing path controlling part; the gas source forming part comprises a gas pump, a gas storage tank and a pressure reducing valve; compressed gas enters the gas storage tank through the gas pump; after the pressure reduction through the pressure reducing valve, the gas sequentially passes through the flowing path control part, the sample analysis part, the sampling part, the flowing path control partand the reagent part; residue reagents in the flowing path system are flushed to enter the waste liquid bag. The compressed gas is used for reverse flushing; most residue reagents in the flowing pathare cleanly flushed; the instrument has little crossed pollution during the measurement of a plurality of samples; the performance is more stable.
Owner:SHENZHEN CORNLEY BIO MEDICAL CO LTD

Blood gas analysis instrument

The invention discloses a blood gas analysis instrument which comprises a detection analysis main board for detecting and analyzing a blood sample and further comprises a bearing seat provided with a limiting sliding groove for enabling a test card to directionally slide, and a pressurizing assembly, a top heating limiting assembly, a bottom heating limiting assembly, a pushing assembly and a driving assembly arranged on the bearing seat. The pressurizing assembly and the top heating limiting assembly are located above the limiting sliding groove, and the bottom heating limiting assembly and the pushing assembly are located below the limiting sliding groove; the pressurizing assembly, the top heating limiting assembly, the pushing assembly and the bottom heating limiting assembly are sequentially arranged from top to bottom; the pressurizing assembly is used for extruding a gas storage area of the test card; the top heating limiting assembly is used for limiting and heating the top of the test card; and the bottom heating limiting assembly is used for limiting and heating the bottom of the test card. The blood gas analyzer is mainly used for detecting and analyzing a blood sample, and has the advantages of good detection effect and high accuracy.
Owner:CHENGDU SEAMATY TECH +1
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