49 results about "Blood gas analyzer" patented technology

The invention discloses a calculation method for arterial oxygen saturation by using the characteristic quantity of a dual-wavelength photoelectric volume pulse wave. The calculation method comprises the following steps of synchronously acquiring pulse oximeter signals with different wavelengths under sources during a period of time and taking the logarithm to obtain a logarithmic under two wavelengths; extracting characteristic quantities of dual wavelengths by using an extraction method for direct current characteristic quantity and alternating current characteristic quantity of the dual wavelengths in a time domain or a frequency domain; removing the direct current characteristic quantity and the alternating current characteristic quantity which have gross errors according to the 3sigma criterion, and taking a mean value of the direct current characteristic quantity and the alternating current characteristic quantity of which coarse noises are removed as a final characteristic quantities of dual-wavelength photoelectric volume pulse wave; extracting a certain quantity of characteristic quantity samples of the photoelectric volume pulse wave, measuring a truth value of the arterial oxygen saturation by using a blood-gas analyzer, and establishing a correction model of the truth value of the arterial oxygen saturation and the characteristic quantity of the photoelectric volume pulse wave; extracting the characteristic quantity of the photoelectric volume pulse wave of a detected object, and calculating the arterial oxygen saturation by using the correction model.

The invention relates to a blood-gas reaction monitor and control device which belongs to the technical field of fluid detection and comprises a gas supply system, a gas mixing tank, a gas-liquid reaction tank and a data acquisition and control device, wherein the gas supply system comprises a steel bottle cabinet and a steel bottle arranged in the steel bottle cabinet; through respective pipeline, the steel bottle and electromagnetic valves arranged on the pipelines are respectively connected with the gas mixing tank and the gas-liquid reaction tank which are communicated; the gas mixing tank is mutually communicated with the gas-liquid reaction tank; the gas mixing tank is internally provided with a pressure sensor, and the gas-liquid reaction tank is internally provided with a liquid-level detector, a pressure sensor, a pH electrode and a dissolved oxygen sensor; a plurality of gas concentration sensors are fixed on the lateral wall above the gas-liquid reaction tank; and the data acquisition and control device is used for controlling the electromagnetic valves connected to the pipelines and acquiring the measured data from the pressure sensor, the pH electrode, the dissolved oxygen sensor and the gas concentration sensors. The invention is suitable for the detection of aqueous solution and non aqueous solution, can detect gases such as oxygen, nitrogen, carbon monoxide, carbon dioxide, nitrogen oxide, nitrogen dioxide, and the like, is also suitable for the carrier gas performance analysis of natural blood including human and animals, and also has all functions of a blood gas analyzer.

The invention discloses a blood-gas analyzer and a detection method thereof. The blood-gas analyzer comprises a blood sample introduction device, a reagent blank introduction device, a cleaning reagent introduction device, a waste liquid recovery device, an electrochemical detection device, an optical detection device, a three-way rotary valve and a double-way rotary valve. Through the three-way rotary valve and the double-way rotary valve, electrochemical detection and optical detection are skillfully combined. A whole blood sample to be detected is subjected to pH and ion determination and simultaneously, the optical detection method determines oxidized hemoglobin and reduced hemoglobin. The blood-gas analyzer saves time, simplifies operation and reduces a patient seek treatment cost. The apparatus detection process is completely automatic so that the detection is convenient and fast and human influence is small.

A medical tested object auto-ejection structure comprises a detection instrument and a tested object (1). An insertion port is formed in the detection instrument. When the tested object (1) is inserted in the instrument through the insertion port, the bottom end of the tested object (1) presses a bulge (21) used for rebounding, and a raised step (11) arranged on the surface of one side of the tested object (1) is locked on a clamping buckle (31) arranged at a position corresponding to the step on the instrument simultaneously, and after a test is finished, the instrument releases the locking of the clamping buckle (31) for the tested object (1) by a transmission device, and the tested object (1) is ejected from the instrument in time under the action of the bulge (21) used for rebounding, thus solving the problem of forgetting to pull the tested object out or inability to pull it out in time, and improving the reliability of the product.

The invention discloses an intelligent blood gas analysis system and method in wireless transmission. The system comprises a blood gas analyzer, multiple auditing ends and printing equipment, whereinthe blood gas analyzer comprises a processor and a blood gas detection module; the blood gas analysis module is used for detecting a blood sample, and transmitting a blood gas detection result to theprocessor; the processor comprises a blood gas analysis module for performing analysis according to a blood gas detection result returned by the blood gas detection module, and giving an initial bloodgas analysis result; a wireless transmission module for sending the blood gas detection result to each auditing end and receiving indication information returned by the auditing end, and sending theindication information returned by the auditing end to the printing equipment; and the printing equipment is used for printing an auditing end returning result received by the processor. Through real-time data transmission, the problem that the blood gas analysis on the patient cannot be processed by a doctor in real time due to long distance is solved.

A medical tested object auto-ejection structure comprises a detection instrument and a tested object (1). An insertion port is formed in the detection instrument. When the tested object (1) is inserted in the instrument through the insertion port, the bottom end of the tested object (1) presses a bulge (21) used for rebounding, and a raised step (11) arranged on the surface of one side of the tested object (1) is locked on a clamping buckle (31) arranged at a position corresponding to the step on the instrument simultaneously, and after a test is finished, the instrument releases the locking of the clamping buckle (31) for the tested object (1) by a transmission device, and the tested object (1) is ejected from the instrument in time under the action of the bulge (21) used for rebounding, thus solving the problem of forgetting to pull the tested object out or inability to pull it out in time, and improving the reliability of the product.

A blood analyzer including a specimen preparation unit, a flow cell, a light source unit, light receivers, and a processing unit. The processing unit is configured to identify and count lymphocytes in the first measurement specimen by using first scattered light information based on the first scattered light and second scattered light information based on the second scattered light, and configured to identify and count blood cells having thereon the predetermined surface antigen in the first measurement specimen by using first fluorescence information based on the first fluorescence.

Disclosed is a blood gas analyzer, comprising a needle valve (101) situated in a sampling frame, a sample box (2) connected to the needle valve, a first pump body (4) connected to the sample box, a waste liquid bag (7) connected to the first pump body, a liquid detector (18) connected to the needle valve and a second pump body (5), a third electromagnetic valve (11) connected to the liquid detector, a first electromagnetic valve (8) connected to the second pump body, and a third pump body (6) connected to the needle valve and the waste liquid bag, wherein in the sample box, one end of a front detector (201) is connected to the needle valve and the other end is successively connected to a detection membrane tube (202) and a rear detector (203), and the rear detector is connected to the first pump body; the preceding components are connected to each other through flow tubes (3); a memory device (205) is connected to the detection membrane tube via electrodes (204); and both the first electromagnetic valve (8) and a second electromagnetic valve (9) are provided with air inlets. By means of the calibration of a liquid instead of the prior art method of mixed calibration of a gas and liquid, faults caused by the liquid entering an air path can be avoided, and the reliability of the instrument is improved.

Point-of-care medical analyzers, such as blood-gas analyzers, indicate a wide range of medical conditions and such analyses have, thus, found widespread use in medical practice. However, such point-of-care medical analyzers require frequent reagent replenishment. Organising for the replacement of reagents may be difficult, and is often undesirable to store large amount of reagent at a particular point-of-care. Accordingly, the present application describes an apparatus for generating predicted consumable state data of a point-of-care medical analyzer, comprising an input unit and a processingunit. The input unit is configured to receive initial consumable state data of a point-of-care medical analyzer defining an initial amount of a point-of-care medical analyzer consumable present in thepoint-of-care medical analyzer, and an analyzer identifier at a first time index. The input unit is configured to receive a second time index. The processing unit is configured to generate predictedconsumable state data defining an amount of the point-of-care medical analyzer consumable predicted to be present in the point-of-care medical analyzer at the second time index using a predicted consumable depletion model selected using at least the analyzer identifier and the initial consumable state data. The predicted consumable depletion model comprises (i) a consumable model of the point-of-care medical analyzer defining a consumable depletion rate of the point-of-care medical analyzer consumable in the point-of-care medical analyzer for a test, and (ii) a point-of-care medical analyzer use model defining an occurrence rate of the test. The predicted consumable state data is generated by the processing unit based on an aggregation of the initial amount of a point-of-care medical analyzer consumable present in the point-of-care medical analyzer, and the outputs of at least the consumable model and the point-of-care medical analyzer use model between the first time index and the second time index.