40 results about "Blood volume" patented technology

The blood purification device comprises a blood purifier, a downward extending plate and a plurality of dialysis pipelines, a plurality of pipeline connectors are installed on one side of the downward extending plate, liquid flowing grooves are formed in the pipeline connectors, the dialysis pipelines are inserted into the inner walls of the corresponding liquid flowing grooves, and the dialysis pipelines are connected with the downward extending plate through the liquid flowing grooves. A connector chuck is installed on the side wall of the dialysis pipeline, a bottom groove is formed in the bottom end of the pipeline connector, an annular inner groove is formed in the pipeline connector, and a check ring is fixedly connected to the inner wall of the annular inner groove; the sealing air bag expands and extrudes when the dialysis pipeline is connected with the pipeline connector, the connecting tightness and the sealing effect between the connector chuck and the bottom groove are enhanced, then blood leakage or air entering the pipeline is prevented, the actual blood amount participating in purification is kept, and the purification efficiency is prevented from being affected; air is prevented from entering a pipeline to form air embolism, and the risk that external bacteria infect blood is avoided.

The invention provides a stepped ventricle auxiliary circulating pump device, relates to the technical field of heart blood pumps, and provides a structure that a heart blood pump is arranged in a heart chamber and below an aortic valve or a pulmonary valve, and a stepped motor and an axial flow channel are designed on the basis, so that a blood flow channel is formed between the motor and the axial flow channel; the blocking influence of the size of the motor above the aortic valve or the pulmonary valve on the blood circulation process can be effectively avoided, and the amount of blood pumped out of the aortic valve or the pulmonary valve is effectively increased.

A blood pump-oxygenator system (1; ...; 10) comprises at least one blood pump (11), at least one oxygenator (20, 21), a blood flow inlet (80), and a blood flow outlet (90), which are connected so as to form a circuit to be operable as a cardiopulmonary bypass system adapted for extracorporeal processing of the patient's blood, wherein the first blood pump (11) is configured to convey blood through the circuit from the patient (P) into the blood flow inlet (80), through the oxygenator (20, 21) and out of the blood flow outlet (90) back into the patient (P). The system (1; ...; 10) further comprises a recirculation loop (100) arranged between the blood flow inlet (80) and the blood flow outlet (90), wherein the recirculation loop (100) accommodates the first blood pump (11) and the oxygenator (20, 21), wherein the first blood pump (11) is configured to circulate at least part of the blood in the circuit through the recirculation loop (100) such that the blood passes through the oxygenator (20, 21) multiple times such that the blood is repeatedly subject to the exchange of O2 and CO2 within the oxygenator (20, 21). At least a first valve (31) is provided positioned between the recirculation loop (100) and the blood flow outlet (90) and configured to control an amount of blood flowing through the recirculation loop (100).

The invention discloses a rapid detection device for diabetic nephropathy patients, and belongs to the technical field of diabetic nephropathy patient detection.The rapid detection device comprises a blood glucose detection assembly, a self-adaptive adjusting mechanism, an extrusion force adjusting structure and an automatic blood taking mechanism, and the self-adaptive adjusting mechanism is arranged on the blood glucose detection assembly; the extrusion force adjusting structure is arranged in the blood glucose detection assembly, the extrusion force adjusting structure is connected with the self-adaptive adjusting mechanism, the extrusion force adjusting structure comprises an adjusting assembly and a reciprocating displacement assembly, and the automatic blood taking mechanism is arranged on the blood glucose detection assembly. By arranging the self-adaptive adjusting mechanism, the extrusion force adjusting structure and the automatic blood taking structure, the extrusion force for assisting the blood taking structure of the person to be detected is self-adaptively adjusted according to different thicknesses of the hands of the person to be detected, and it is ensured that the device can take out sufficient blood for detection; and tissue fluid groups which influence a detection result can be prevented from existing in blood, so that the detection precision of the device is improved.

A mechanism for processing one or more laser speckle images. A spatial frequency transform is used to transform the one or more laser speckle images into spatial frequency data. The spatial frequency data is used to define a plurality of blood velocity indicators, which each indicate an amount of blood moving at a particular velocity within an illuminated region of interest.

The tuberculosis infection T cell immune evaluation system comprises a microfluidic immune reactor, a pipettor, a detection antibody, a detection tracer SA-PolyHRP, a luminol chemiluminescence substrate, a chemiluminescence detection unit and a computer, the microfluidic immune reactor is coated with an interferon capture antibody, and the microfluidic immune reactor is coated with a chemiluminescence detection unit. The pipettor is used for sucking a blood sample, a detection antibody, a detection tracer SA-PolyHRP and a luminol chemiluminescent substrate into the microfluidic immune reactor; the chemiluminescence detection unit collects a chemiluminescence image signal and converts the chemiluminescence image signal into a quantitative value signal, and the quantitative value signal is converted into an equivalent standard interferon concentration through a standard curve so as to evaluate the T cell immune protection capability of the sample; according to the tuberculosis infection T cell immune evaluation system and evaluation method provided by the invention, through a high-sensitivity detection platform, the stimulation incubation in a trace blood sample can be realized, the incubation time can be shortened, and the clinical demand on the blood volume of a patient can be reduced, so that some special crowds can also perform IGRA detection, and the system and the method are rapid, flexible, stable and reliable.

In some examples, a medical system includes an aspiration catheter defining a catheter lumen; and an inner member configured to be received in the catheter lumen and extend distally outward from a distal opening of the catheter, wherein the inner member comprises an elongated support structure configured to move axially within the catheter lumen; and a rigid member at a distal portion of the elongated support structure, wherein a proximal-facing surface of the rigid member defines one or more openings configured to deliver a fluid into vasculature of the patient to dilute or displace a volume of blood aspirated from of vasculature through the catheter lumen.

A system and a method for determining a physiological parameter of a body comprising blood perfused tissue, the system comprising a first sensor configured to receive first radiation from the blood perfused tissue and, based on the received first radiation, provide first information relating to an amount of blood in the tissue, such as from an absorption of the first radiation in the tissue, a second sensor configured to receive second radiation from the blood perfused tissue and, based on the received second radiation, provide second information relating to a speed of blood in the tissue, such as from Doppler shift of the second radiation, a controller configured to determine the physiological parameter from the first information and the second information.

An oral care system for sensing blood in an oral cavity and in gum tissue. The sensing is performed magnetically using a magnetic field source (16) and magnetic sensing arrangement (18) incorporated into a cleaning or treatment portion of an oral care device (e.g. a brush head of a toothbrush or mouthpiece part of a brushing mouthpiece device). The field source generates (16) a reference field and the sensing arrangement (18) is arranged to sense the field strength of the reference field at one or more spatial points. Since blood is magnetic, when brought into the reference field, it magnetically interacts with the field, which may alter field strength, field shape, or flux distribution. This enables presence of blood to be detected. It also allows for detecting specific oral features or disease states associated with presence of blood or abnormal amounts or concentrations of blood. For example, this can be based on application of detection criteria which relate to one or more properties of the sensed field.

The invention relates to the technical field of medical instruments, in particular to a cesarean section bleeding quantity quantification device which comprises a control module and a negative pressure generator, the negative pressure generator is communicated with a filtering treatment structure, a blood collecting structure and a blood quantification structure, and the blood collecting structure comprises a first collecting module and a second collecting module; the first collection module comprises a collection shell, a trigger assembly is installed on the collection shell, the collection shell is connected with the second collection module, a suction opening is formed in the collection shell, the collection shell communicates with a pipeline assembly, the filtering treatment structure is provided with a filtering assembly, and the blood quantification structure comprises a pure blood collection module and a filtered blood collection module. Monitoring modules are arranged in the pure blood collection module and the filtered blood collection module, electric valves are arranged in the pipeline assemblies, and the control module is used for controlling opening and closing of the electric valves according to signals received by the trigger assembly. The blood collection, filtration and quantitative monitoring technology is integrated, and comprehensive and real-time monitoring and accurate quantification of the bleeding amount in the operation process are achieved.

To provide a blood sampling and dispensing system capable of reducing the burden on medical staff and patients before and during blood sampling, and capable of supplying sampled blood to one or more analytical devices corresponding to test items.SOLUTION: A blood sampling and dispensing system according to the present invention includes: a parent blood sample container preparation device that creates, based on the patient's blood collection instruction information, a parent identification label on which identification information related to the patient's test is printed and / or stored, to be affixed to a parent blood sample container capable of accommodating the total amount of blood required for the patient's test; and a blood sample container preparation and dispensing device that prepares a labeled child blood sample container by attaching a child identification label on which the identification information is printed and / or stored to a child blood sample container required for the patient's test based on the identification information related to the patient's test, and dispenses blood from the parent blood sample container to the child blood sample container based on the identification information printed or stored on the parent identification label of the parent blood collection container and / or the child identification label of the child blood collection container.SELECTED DRAWING: Figure 1

A measurement system that can be used at the bedside of a patient to monitor the amount of blood drawn from the patient. The system uses a disposable sensor and electronics to accurately and in real-time measure the volume of blood drawn from the patient using a paddle wheel sensor, where the rotation of the paddle wheel is correlated to the volume of blood drawn and collected from the patient.

A system and a method for determining a physiological parameter of a body comprising blood perfused tissue, the system comprising a first sensor configured to receive first radiation from the blood perfused tissue and, based on the received first radiation, provide first information relating to an amount of blood in the tissue, such as from an absorption of the first radiation in the tissue, a second sensor configured to receive second radiation from the blood perfused tissue and, based on the received second radiation, provide second information relating to a speed of blood in the tissue, such as from Doppler shift of the second radiation, a controller configured to determine the physiological parameter from the first information and the second information.

A system and method are disclosed for receiving a batch of sample containers (e.g., blood culture bottles), classifying the sample containers, and discarding negative sample containers in a safe, reliable, and consistent manner. Further, a system and method are disclosed for accurately and precisely determining the amount of sample inoculated into a container. For example, the device determines the amount of blood inoculated into a blood culture bottle by weighing the blood culture bottle inoculated with the blood sample and / or by acquiring an image of the blood culture bottle. Such an approach facilitates automation because the user does not need to visually inspect each bottle.

The utility model discloses a safety remaining needle which comprises a long sheath, a needle seat assembly and an automatic rebounding mechanism, a tube seat is arranged in the long sheath, a steel needle is installed in the tube seat, a hose sleeve is fixedly connected to the inner circle wall face of the tube seat in a sleeved mode, and the outer circle wall face of the steel needle is movably connected with the inner circle wall face of the hose sleeve in a sleeved mode. A tube seat rubber plug and a fluid director are fixedly installed on the inner circle wall face of the tube seat, circular holes in the outer wall of the needle seat coincide with corresponding circular holes in the inner sleeve of the backflow device, backflow blood is guided into an interlayer between the inner sleeve of the backflow device and the outer sleeve of the needle seat, and then the backflow blood is guided into an interlayer between the inner sleeve of the backflow device and the outer sleeve of the needle seat through the ventilation and blood blocking functions of the membrane. And the blood is sealed in the interlayer. Due to the fact that the gap of the interlayer is small, the blood backflow function can be achieved, the amount of backflow blood is small, and after the puncture needle is discarded, little backflow blood is difficult to overflow from the small hole to cause secondary pollution, and the design safety is high.

Treatment segments of a catheter for heart valve treatment have a distal catheter body having a collapsible and expandable through conduit operatively connected to a collapsible and expandable valve cusp enclosure. The through conduit has a first end sealed by a first annular valve and a second end sealed by a second annular valve, which each have an elastic body, a distal end connected to the valve cusp enclosure, and a proximal end sealingly engaged to the distal catheter body in a deployed, closed position. The through conduit and the distal ends of each of the first and second annular valves are configured to expand with the valve cusp enclosure at a rate proportionate to a patient's blood pressure and a volume of blood displaced during expansion, and the elastic body and proximal ends thereof are configured to open and close in response to systolic and diastolic blood flow.

Methods for characterizing fluids from a patient. A time series of images of a conduit are received, and a conduit image region in the images is identified. The conduit image region may include a shallow section and / or a deep section. The shallow section includes a dimension of the conduit along an optical axis of the camera such that opacity of the fluids from redness associated with red blood cells or hemoglobin is limited to permit pixel color visualization in the images. The deep section includes a dimension is along the optical axis such that the redness provides a minimum opacity to permit the pixel color visualization. A concentration of a blood component of the fluids is determined based on the pixel color visualization. A volume of blood passing through the conduit is estimated based on the estimated concentration of the blood component and an estimated volumetric flow rate.

A multi-sensor blood loss monitor system is provided. Specifically, the blood loss monitor system can include a weight sensor, a volume sensor within an aspirator canister, and an integration device. Further, the blood loss monitor system can further be connected to a suction head adaptor. The weight sensor can be used to determine how many surgical wipes have been disposed, thereby estimating a volume of blood loss. In addition, the volume sensor can include a fluid level sensor and an optical spectroscopy sensor to determine an amount of blood in the aspirator container. The integration device can combine these data to display a total blood loss, as well as trigger an alarm when a blood loss level is exceeded.

An input interface is configured to receive a signal corresponding to a quantity of light that has passed through a living tissue of a subject. A pressurization controller is configured to control a pressurizing operation performed with a pressurization device attached to a body of the subject, thereby changing at least one of a thickness of the living tissue, an amount of blood contained in the living tissue, an amount of cellular interstitial fluid contained in the living tissue, an amount of blood flowing into the living tissue, and an amount of blood flowing out from the living tissue. A processor is configured to acquire, from a temporal change of the signal due to the pressurizing operation, a feature quantity that is used for estimating at least one of a physiological state of the living tissue and a disease state of the subject. An output interface is configured to output a signal corresponding to the feature quantity. The light includes first infrared light for which for which a difference between the absorbance of oxygenated hemoglobin in blood and absorbance of deoxygenated hemoglobin is less than a prescribed value; and second infrared light for which absorbance of water is more than absorbance of hemoglobin.

A disposable blood metering device. A measurement system that can be used at the bedside of a patient to monitor an amount of blood drawn from the patient. The system uses disposable sensors and electronics to accurately and in real time measure the volume of blood drawn from a patient using a paddle wheel sensor, wherein the rotation of the paddle wheel is associated with the volume of blood drawn and collected from the patient.

The invention belongs to the technical field of medical instruments, and discloses a multi-modal intraoperative bleeding amount real-time estimation method and system, the volume proportion of blood in a mixed solution is calculated through multi-band absorbance information, and the interference of irrigation solution dilution on blood loss amount evaluation is effectively solved; the blood amount in the suction bottle is calculated by combining the weight of the mixed liquid and the suction flow, so that the accuracy of liquid amount measurement is improved; the gauze is tracked and recognized through the surgical field video, the blood content is estimated, and automatic evaluation of the blood content of the gauze is achieved; finally, the Kalman filtering algorithm is used for fusing multi-source data, the accumulated blood loss amount and blood loss rate are dynamically calculated, the real-time performance and robustness of estimation are remarkably improved, and second-level blood loss rate information can be provided. In addition, according to the method, graded warning can be carried out according to the blood loss condition, a blood transfusion pump and an anaesthesia machine are controlled in a linkage mode, and auditable logs are recorded; therefore, the accuracy, the real-time performance, the intelligent level and the traceability of intraoperative blood loss volume evaluation are comprehensively improved.

The utility model provides a high sensitivity flow type antibody quantitative detection suite, relates to medical supplies technical field, including test paper, solution bag, dipping cotton swab, anti-collision box and quantitation subassembly, dipping cotton swab middle is equipped with the middle folding groove, quantitation subassembly includes test tube and cambered surface piece, cambered surface piece bottom is fixed with the fixed rubber ring, and the fixed rubber ring is fixed in the middle folding groove. A mode of installing a pressing rubber ring is adopted to solve the problem of flow antibody detection, which is an advanced immunoassay technology, a common user can also carry out self-test at home, the test suite generally comprises all necessary materials and instructions, so that the user can collect and analyze a blood sample through simple steps, but under the condition of no professional guidance, the test suite has the advantages of simple operation and low cost. In the prior art, the risk of operation errors exists, a user is difficult to master the dropping amount of a solution to test paper after sampling blood and dropping the blood into a medical solvent, if the dropping amount of the blood is too small or too large, the reagent reaction is incomplete, the final detection result is influenced, the test result is inaccurate, and the sensitivity is reduced.

The blood pump-oxygenator system (1; ,...; 10) comprises at least one blood pump (11), at least one oxygenator (20, 21), a blood inlet (80) and a blood outlet (90) connected together to form a circuit operable as a cardiopulmonary bypass system suitable for extracorporeal treatment of patient blood, wherein the first blood pump (11) is configured to deliver blood through the circuit from the patient (P) to the blood inflow port (80), through the oxygenator (20, 21) and out of the blood outflow port (90) back into the patient (P). The system (1; ,...; the device (10) further comprises a recirculation loop (100) arranged between the blood inlet (80) and the blood outlet (90), where the recirculation loop (100) houses a first blood pump (11) and an oxygenator (20, 21), where the first blood pump (11) is configured to circulate at least a portion of the blood in the loop through the recirculation loop (100) such that the blood passes through the oxygenator (20, 21) multiple times, and where the first blood pump (11) is configured to circulate at least a portion of the blood in the loop through the recirculation loop (100). Blood is repeatedly subjected to an exchange of O2 and CO2 in oxygenators (20, 21). At least one first valve (31) is provided between the recirculation loop (100) and the blood flow outlet (90) and is configured to control an amount of blood flowing through the recirculation loop (100).

Systems and methods for receiving batches of sample containers (e.g., blood culture bottles), sorting the sample containers, and discarding negative sample containers in a safe, secure, and consistent manner are disclosed. Additionally, systems and methods to accurately and precisely determine the amount of sample inoculated into a container are disclosed. For example, an apparatus determines the amount of blood inoculated into a blood culture bottle by weighing and / or obtaining an image of the blood culture bottle inoculated with blood sample. Such an approach facilitates automation, as a user does not need to visually inspect each bottle.

Systems and methods for reducing ventricular filling volume are disclosed.SOLUTION: The stimulation circuit is used to stimulate the patient's heart to reduce ventricular filling volume or blood pressure. When the heart is stimulated to a certain degree to reduce the blood pressure, the cardiovascular system may eventually adapt to the stimulation and return to a higher blood pressure. The stimulation pattern may be inconsistently configured such that an adaptive response of the heart is reduced or prevented, and the stimulation circuitry may be used to stimulate the patient's heart to cause at least a portion of the atrial contraction with the atrioventricular valve closed. Such atrial contraction causes less blood to enter the corresponding ventricle than when the atrioventricular valve is open throughout atrial contraction.SELECTED DRAWING: Figure 9

The invention relates to an interesting sports method for dynamically adjusting content based on personnel completion degree, which belongs to the technical field of interesting sports, and comprises the following steps: determining an initial pixel height score when an interesting sports guard prepares; determining a leg lifting degree score of each high leg lifting; determining that accumulated amplification props generate scores, determining whether to provide enhanced props according to the magnitude of the scores generated by the amplification props, and accumulating amplification integral starting points; determining accumulated reply prop generation scores, determining whether reply props are provided or not according to the sizes of the reply prop generation scores, and accumulating reply point starting points; determining a monster variation score accumulated per second, determining whether to provide a variation monster according to the size of the monster variation score, reducing the blood volume of personnel, and accumulating a variation integral starting point; determining an ending judgment score per second, and judging whether the interesting exercise is ended or not; if the interesting exercise ends, determining the exercise score of the person, and guiding the person to exercise according to the exercise score of the person.

To control pressure fluctuation in an extracorporeal circulation part while reducing an extracorporeal circulation blood amount.SOLUTION: An arterial clamp capable of opening and closing the arterial blood circuit, a venous clamp capable of opening and closing the venous blood circuit, a pump capable of introducing or discharging air into or from the gas circuit, and a processing unit configured to control the pump, the arterial clamp, and the venous clamp, and a clamp control unit configured to perform control such that the flow path of the arterial blood circuit is opened by the arterial clamp and the flow path of the venous blood circuit is closed by the venous clamp during the blood removal treatment, and the flow path of the arterial blood circuit is closed by the arterial clamp and the flow path of the venous blood circuit is opened by the venous clamp during the blood returning treatment.SELECTED DRAWING: Figure 3

The present invention provides a stepped ventricular assist circulation pump device, which relates to the technical field of cardiac blood pumps. It proposes a structure in which the cardiac blood pump is arranged in the ventricle and below the aortic valve or the pulmonary valve, and on this basis, a stepped motor and an axial flow channel are designed to form a blood flow channel between the motor and the axial flow channel, which can effectively avoid the size of the motor itself from blocking the blood circulation process above the aortic valve or the pulmonary valve, and effectively increase the amount of blood pumped out from the aortic valve or the pulmonary valve.

The present invention provides a blood collection device and a blood collection method that make it possible to monitor the progress of blood collection into a container and to highly accurately measure the amount of blood collected in the container regardless of the type of the container into which blood is collected. A blood collection device (1) comprises: a light source (141) that emits planar light; a container (151) into which blood is collected; up-down movement mechanisms (121, 122) that move the container (151) up and down; and a light detector (142) that detects light transmitted through the container (151). The blood collection device (1) further comprises a light shielding member (160) that forms a light projection window (180) for blocking a portion of the light emitted from the light source (141) and projecting a portion of the light to the container (151). The light shielding member (160) is provided in a movable manner so as to be capable of changing the size of the light projection window (180). This blood collection method comprises: an operation for changing the size of the light projection window when blood is collected into the container, and projecting light projected from a side of the container to the whole of a blood storage space inside the container; and an operation for projecting light projected from the side of the container to a part of the blood storage space that is located at a predetermined height of the container.

The utility model discloses a negative pressure aspirator with liquid level identification, which comprises a frame, a liquid level tank, a negative pressure suction device, a camera device and a display, the liquid level tank, the negative pressure suction device, the camera device and the display are arranged on the frame, the liquid level tank is provided with a first interface and a second interface, the first interface is connected with the negative pressure suction device through a first conduit, and the second interface is connected with the negative pressure suction device through a second conduit. The second connector is connected with a second catheter used for extracting thrombus, the camera device is arranged on the side face of the liquid level tank and connected with the displayer through the circuit board, and the blood amount corresponding to the liquid level of the liquid level tank is displayed on the displayer in real time. The liquid level tank, the negative pressure suction device, the camera device and the display are mounted on the same frame, functions are integrated, the camera device acquires liquid level information of the liquid level tank in real time and transmits the liquid level information to the display during operation, accurate identification and display of the liquid level are realized, and the thrombus aspiration device can be widely applied to thrombus aspiration operations. Doctors can concentrate on surgery operation conveniently, and the blood suction amount can be accurately controlled.