89 results about "Fluid level" patented technology

Systems and methods for detecting damage to a bladder for controlling fluid levels in an oil reservoir of a power transformer include a bladder sleeve. The bladder sleeve includes an inner elastomer layer defining an interior of the bladder sleeve; an outer elastomer layer limiting flow of liquids into the interior of the bladder sleeve; and a middle layer disposed between the inner elastomer layer and the outer elastomer layer, the middle layer including carbon nanotube windings having electrodes attached to opposite ends of the carbon nanotube windings, the carbon nanotube windings having a resistance that changes in response to damage to the bladder.

Systems and methods for detecting damage to a bladder for controlling fluid levels in an oil reservoir of a power transformer include a bladder sleeve. The bladder sleeve includes an inner elastomer layer defining an interior of the bladder sleeve; an outer elastomer layer limiting flow of liquids into the interior of the bladder sleeve; and a middle layer disposed between the inner elastomer layer and the outer elastomer layer, the middle layer including carbon nanotube windings having electrodes attached to opposite ends of the carbon nanotube windings, the carbon nanotube windings having a resistance that changes in response to damage to the bladder.

The invention relates to the technical field of image analysis, in particular to an early coagulation monitoring system of an arteriovenous pot based on image processing. The system obtains an arterial pot image and a venous pot image in real time; acquiring an early coagulation coefficient of the arteriovenous jug at the current moment according to the blood wall hanging condition in the arteriovenous jug image and the flocculus floating condition in the venous jug image in the current time period; according to the bubble distribution condition in the arterial jug image at the current moment and the liquid level height change condition in the arterial jug image and the venous jug image in the current time period, the abnormal degree of the dialysis pipeline at the current moment is obtained; correcting the early blood coagulation coefficient according to the abnormal degree of the dialysis pipeline, and obtaining the corrected early blood coagulation coefficient at the current moment to judge whether the early blood coagulation phenomenon exists at the current moment or not. According to the method, the early coagulation coefficient is accurately obtained and corrected in real time, so that the early coagulation phenomenon can be timely and accurately found and timely treated, and the stability of hemodialysis is effectively improved.

The invention relates to the technical field of medical instruments, and discloses a blood coagulation analyzer sample adding detection control method and device and electronic equipment, the method comprises the following steps: linkage of a Z-direction motor and a liquid level sensor, real-time interpretation of a liquid level, and determination of an initial sample suction position; based on the initial position and the preset quantity, controlling a Z-direction motor to move downwards, and driving a sample adding pump with an encoder to suck a sample; lifting the needle after sucking the sample, starting liquid level induction, monitoring liquid level change, and obtaining state information; if no medium change exists on the needle lifting liquid level, empty suction is judged, and a hole site switching instruction is generated; if medium change exists on the needle lifting liquid level, normal sample suction is judged, and the sample adding process is continued after confirmation; the device comprises a motor driving control panel, a sample adding pump, a sample adding needle, a liquid level sensing plate and a ZR movement assembly. The liquid level height is interpreted in real time in combination with a layered software algorithm, a liquid level sensing mechanism is started again in the needle lifting process after sample suction is completed for continuous monitoring, and liquid level misjudgment caused by external interference or abnormal device state is effectively avoided.

According to the downhole plunger gas lift uniflow limiter, in the limiter, a throwing-fishing assembly comprises a solid throwing-fishing head arranged at the top and a hollow buffer cylinder located at the bottom, and the inner wall of the bottom of the hollow buffer cylinder extends inwards in an inclined mode to form a fixing head; when the plunger falls to the limiting stopper, the buffer spring retracts, and the solid buffer rod moves and slides upwards in the hollow buffer cylinder to achieve buffering; the annular sealing assembly is hollow, a sealing piece is arranged on the outer wall, a sliding sleeve is arranged on the inner wall, the sliding sleeve shrinks under external force, and the sealing piece is extruded to expand and seal so as to seal an annular space between the limiting stopper and the oil pipe. When the liquid level is lower than a preset value, the sealing assembly is tightly attached to the throat to prevent the liquid from falling back to achieve the effect of the check valve, when the liquid level is higher than the preset value, the elastic structure shrinks, the sealing assembly moves downwards to the diffusion section, a gap is formed between the sealing assembly and the diffusion section, and the liquid falls down from the gap and then flows down through the second liquid inlet and outlet. The limiting stopper can adjust the falling amount of liquid above the limiting stopper.

The invention discloses a biological chip sampling quantitative correction method and a biological chip. A blood filtering stop recognition line, a quantitative recognition line and a quantitative start recognition line are sequentially arranged on a quantitative tube of the biological chip, the blood filtering stop recognition line is arranged close to a quantitative inlet, the quantitative start recognition line is arranged close to a quantitative outlet, and the quantitative recognition line is located between the blood filtering stop recognition line and the quantitative start recognition line. When the lower liquid level of the sample reaches the blood filtering stop identification line, stopping the blood filtering action; when the lower liquid level of the sample reaches a quantitative starting identification line, pre-pressing the sample to enable liquid drops to grow at a quantitative outlet, then adding the sample for detection according to a unified quantitative volume or other quantitative volumes according to the relationship between the upper liquid level of the sample and the quantitative identification line, if adding the sample for detection according to the other quantitative volumes, multiplying a detection result by a corresponding coefficient, the corresponding coefficient is equal to the ratio of the unified quantitative volume to the remaining quantitative volumes. The quantitative detection success rate of samples with the same volume and different hematocrites reaches 100% by adopting the method.

Systems and methods for estimating a blood volume within a canister. The system may include means for detecting a fluid level of the fluid, such as a float sensor mechanism disposed within the canister. An imaging device captures an image of the fluid within the canister. A processor determines an estimated concentration of a blood component in the fluid based on the image. The processor determines a canister volume of the fluid based on the detected fluid level, and estimates the blood volume within the canister based on the estimated concentration of the blood component and the determined canister volume. The processor may trigger the imaging device to capture the image based on a change in the canister volume. An insert may be arranged within the canister and positioned adjacent to and offset from a transparent region of the canister.

The utility model discloses a tool convenient for observing leakage rate, which relates to the technical field of testing and comprises a base, the upper surface of the base is fixedly connected with a testing assembly, and the left side and the right side of the testing assembly are fixedly connected with two symmetrical protection assemblies. The lower surfaces of the two protection assemblies are fixedly connected with the upper surface of the base, an inner cavity of the lower portion of the testing assembly is in threaded connection with a connecting assembly, the testing assembly comprises a shell, the lower surface of the shell is fixedly connected with the upper surface of the base, and a measuring hole channel is formed in an inner cavity of the upper portion of the shell. According to the tool convenient for observing the leakage amount, the shell is made of transparent acrylic, and the volume ML scales are arranged on the outer wall of the shell, so that a tester can conveniently and clearly see the liquid level position, whether leakage occurs or not and the leakage amount numerical value are clearly reflected on the scales during testing, and the leakage amount can be conveniently observed. Therefore, a tester can accurately judge whether the product is qualified.

A negative pressure wound therapy system can include a fluid level detection circuitry positioned in a canister. The fluid level detection circuitry can include a pair of electrodes and a logic circuitry configured to detect fluid level based on one or more signals from the pair of electrodes. The logic circuitry can be protected and isolated from the patient's body to prevent flow of any leakage current through the patient's body using one or more approaches disclosed herein.

The invention relates to the technical field of blood detection, in particular to a blood sample automatic uniform mixing method and device based on machine vision, and the device comprises a clamping assembly, a rotating assembly, a supporting frame, a vision detection module, a uniformity detection module, a vertical shaking unit and a data analysis module. The working modes of the vertical shaking unit and the supporting frame are determined according to the detected blood height and blood uniformity, the number of shaking times and the shaking frequency of the vertical shaking unit are determined, and compensation parameters for determining the number of shaking times of the vertical shaking unit are determined again according to the blood uniformity after shaking is completed. And for different liquid level heights and uniformity, the working modes of the rotating assembly and the vertical shaking unit are autonomously determined and intelligently monitored and adjusted, so that the defect of shaking due to human experience is overcome, and the qualification of sample mixing is guaranteed.

This invention relates to the field of cochlear basilar membrane anatomy technology with integrated microscopic vision, and discloses an integrated microscopic cochlear basilar membrane anatomy instrument platform, including a fixing mechanism fixedly connected to the inner wall of the groove to reduce the height difference between the liquid and the outlet during liquid extraction. A storage mechanism rotatably connected to the inner wall of the fixing mechanism stores the liquid. A deceleration mechanism fixedly connected to the outer wall of the fixing mechanism slows down the movement speed of the device. This prevents hydrostatic pressure loss as the liquid level drops, which would result in insufficient initial force for the liquid to enter the outlet tube, slowing down the liquid delivery efficiency, preventing timely replenishment of the physiological solution, causing osmotic pressure imbalance in the sample, and ultimately deforming the sample, rendering it unusable.

The application discloses a urea tank liquid level height monitoring system and a testing method, two sets of sensing systems are installed in the urea tank to read and store liquid level height data of left and right sides of the urea tank in real time; by processing and analyzing the liquid level height data, the current urea tank state can be determined according to the variance of the liquid level height series difference value, such as liquid adding, normal use, abnormal liquid leakage, shaking and serious shaking; the liquid level height data is processed according to the proposed algorithm to obtain the current liquid level height result. The application can reduce the measurement error and still obtain a relatively accurate urea tank liquid level height under severe shaking; the application can determine various states of the urea tank, and only alarms in the case of abnormal liquid leakage, thereby reducing the triggering of the alarm signal under the working conditions such as uphill and downhill, and ensuring the normal driving of the vehicle.

To improve the convenience of managing liquid levels. [Solution] The liquid level measurement system comprises a transmitter 1 that transmits a signal that reaches within a predetermined distance range; a float 2 that floats on the surface of the liquid whose change is to be measured and has the transmitter 2 placed inside it; a receiver 3 that detects the distance h from the transmitter 1 by receiving the signal transmitted from the transmitter 1, which is placed inside the float 2, while the float 2 is floating on the surface of the liquid; and a measuring device 4 that measures the liquid level H on the surface of the liquid based on the distance h detected by the receiver 3 and outputs information based on the liquid level H.

The invention discloses a thoracic closed drainage device, which relates to the technical field of medical instruments, and comprises a drainage tube, a drainage bottle, a connecting tube and a water seal bottle, the drainage tube is communicated with the thoracic cavity and the drainage bottle, the connecting tube is communicated with the drainage bottle and the water seal bottle, and the drainage bottle and the water seal bottle are filled with water seal liquid. The end, connected with the drainage bottle, of the drainage pipe is located below the liquid level of the water sealing liquid, the end, connected with the water sealing bottle, of the connecting pipe is located below the liquid level of the water sealing liquid, and the water sealing bottle is communicated with a negative pressure suction device. The protection mechanism comprises a shell used for containing the drainage bottle and the water seal bottle, a main supporting column and an auxiliary supporting column are arranged in the shell, a first ring body is rotationally arranged between the main supporting column and the auxiliary supporting column, a second ring body is rotationally arranged on the inner circle of the first ring body, and the rotating axis of the first ring body and the rotating axis of the second ring body are perpendicularly crossed.

Systems and methods of the present disclosure relate to non-intrusively monitoring a fluid level or an object in a conduit. A system comprises a component positioned to control flow into or out of the conduit to induce pressure waves in the conduit; a pressure transducer in fluid communication with the conduit, the pressure transducer positioned to measure pressure responses in the conduit due to contact of the pressure waves with the fluid level or the object; and a system controller operable to: receive pressure data from the pressure transducer, the pressure data comprising the pressure responses; and determine a distance of the fluid level or the object in the conduit, relative to the component or the pressure transducer, based on the pressure responses.

The present application discloses a reagent extraction device, a reagent extraction method and a sample analyzer, the reagent extraction device comprising: a reagent module for storing a reagent; the sampling assembly is used for collecting the reagent through the reagent needle; the liquid level detection module is used for detecting the liquid level height of the reagent; the control module is used for obtaining the initial liquid level height; determining a first height and a second height based on the initial liquid level height; the first height is larger than the initial liquid level, and the second height is smaller than the initial liquid level; controlling the liquid level detection module to detect the liquid level height of the reagent in the reagent module to obtain a third height; in response to the condition that the third height is not smaller than the second height and not larger than the first height, the needle head of the reagent needle is controlled to move to the position below the third height for reagent extraction, the initial liquid level height is updated based on the third height, and the reliability of reagent extraction is improved.

The invention belongs to the technical field of drainage instruments, and particularly relates to a chest bottle capable of pre-flushing liquid for closed drainage of thoracic cavity, which comprises a collecting bottle, a water sealing bottle and a negative pressure adjusting bottle which are integrated together and are communicated together through a negative pressure drainage pipeline assembly, and also comprises a partition plate fixed in the water sealing bottle, a partition plate is arranged in the water seal bottle and divides the water seal bottle into a liquid accumulation cavity and a standby cavity, a main liquid inlet pipe is fixedly inserted into the liquid accumulation cavity, an auxiliary liquid inlet pipe is fixedly inserted into the standby cavity, and an exhaust hole is formed in the upper cavity wall of the standby cavity. The device can realize gas-liquid diversion, adjustable negative pressure and efficient and stable drainage, drainage does not need to be interrupted when flushing liquid is replaced or effusion is discharged, excessive discomfort of a patient is avoided, meanwhile, standby drainage can be automatically started when negative pressure blockage occurs, excessive shaking of the liquid level is monitored and prompted, abnormal rising of the liquid level of a standby cavity is alarmed, and the drainage effect is improved. And the use safety of the device is further improved.

The utility model discloses a postpartum hemorrhage nursing device convenient for metering the hemorrhage amount. The postpartum hemorrhage nursing device comprises a waterproof pad, a catheter and a blood collecting bottle, the upper end face of the waterproof pad forms a liquid guide slope surface which is obliquely arranged towards the lower rear portion, a left liquid blocking protection edge A is arranged on the liquid guide slope surface from the left middle portion to the rear middle portion of the liquid guide slope surface, a right liquid blocking protection edge A is arranged on the liquid guide slope surface from the right middle portion to the rear middle portion of the liquid guide slope surface, and a liquid drainage groove is formed between the rear end of the left liquid blocking protection edge A and the rear end of the right liquid blocking protection edge A; the first end of the catheter is connected to the drainage groove, and the second end is connected to the top of the blood collection bottle; the outer wall of the blood collection bottle is provided with containing marks. The beneficial effects of the utility model are that under the diversion of the drainage slope and the guidance of the left and right liquid-blocking protective edges A, the blood from the private part of the puerpera after delivery can be drained to the drainage groove and flows to the blood collection bottle along the drainage tube, and medical staff can estimate the bleeding amount by observing the volume scale corresponding to the liquid level of the collected blood, so that the physical state of the puerpera can be evaluated conveniently; therefore, a doctor can diagnose and treat the body of the puerpera.

The utility model discloses a tool for measuring the liquid level width of fluid in a circular pipeline. The tool comprises a first measuring piece and a second measuring piece, the first measuring piece comprises a first supporting leg, a second supporting leg, a hinging device, a telescopic sleeve rod and a measuring flexible rule, the first supporting leg and the second supporting leg are hinged to the hinging device, a first hinging part is fixed to the first supporting leg and the second supporting leg, the telescopic sleeve rod is fixedly connected to the bottom of the hinging device, and the telescopic sleeve rod comprises a fixed rod and a telescopic rod; the telescopic rod is embedded in the fixed rod, the second hinge part is connected with the first hinge part, and the measuring tape is engraved with uniform scales and is fixed on the telescopic sleeve rod; the second measuring piece comprises a plurality of stainless steel round pipes which are detachably connected and provided with scales, and the stainless steel round pipe on the topmost layer penetrates through the telescopic rod and the fixed rod and is connected with the bottom of the hinging device. The fluid sectional area measuring device can be suitable for fluid sectional area measurement under various pipe diameters, and is wide in application range and convenient to carry.

Systems and methods are providing for detecting and monitoring thoracic fluid, air-trapping and ventilation assessment in real time, wherein data obtained from a non-invasive electrode patch is analyzed using analysis algorithms for an electrical equivalent model that have been personalized for a patient's physiologic characteristics, medical condition and / or historical medical information using machine learning trained on a dataset representative of a large and diverse patient population. The systems and methods provide a simple, real-time, highly sensitive and specific, non-invasive, bedside solution for fluid level assessment, checking for increased air trapping, and ventilation assessment. The described methods include a variety of use cases for the inventive system and methods.

The invention provides a float type liquid level monitoring method and device, a medium and a product. According to the method, a control processing unit firstly obtains preset parameters of a floater, initial liquid density and a real-time height value of a height sensor, and a basic data system is constructed for subsequent calculation. And the control processing unit generates a reaction rate curve by using the initial liquid density and the chemical reaction rate equation, and deduces a curve of the mixed liquid density along with the time change through the reaction rate curve, so that the pre-judgment of the dynamic change of the liquid density is realized. Then, the control processing unit calculates the immersion depth in combination with the current density and floater parameters, the liquid level distance is obtained through the distance difference between the height sensor and the bottom of a floater, and finally the actual liquid level is calculated based on the real-time height of the sensor and the liquid level distance. According to the method, the density change is dynamically tracked, errors caused by the immersion depth of the floater are corrected in a targeted mode, the problem of monitoring deviation caused by the density dynamic change is effectively solved, and the accuracy of liquid level monitoring is improved.

The invention discloses a portable surgical drainage device, and belongs to the technical field of surgical drainage. Comprising a drainage assembly, an anti-overflow assembly and a self-compensation assembly. The drainage assembly is used for draining and guiding out effusion in the thoracic cavity of a patient, the anti-overflow assembly is used for preventing the effusion in the collecting bottle from overflowing, and the self-supplementing assembly is used for automatically supplementing liquid in the water sealing bottle. Liquid level monitoring-automatic supply is achieved through a second standing valve and a floating ball, the floating ball drives a rotating arm and a rotating pipe to adjust the angle along with descending of the liquid level of a water seal cavity, a through hole is aligned with a water outlet, liquid in a water tank automatically flows into the water seal cavity, a torsional spring drives the rotating pipe to reset to stop supply after the liquid level rises again, and manual intervention is not needed in the whole process; the water tank stores sufficient water seal liquid at a time and is in closed connection with the second fixed valve, so that the trouble of frequently adding liquid in an operation is avoided, the cleanliness of the liquid is guaranteed, air is prevented from flowing back to the thoracic cavity due to failure of the water seal, and the drainage safety is improved.

The invention relates to the field of bone specimen sampling, and discloses sampling treatment equipment for bone specimen sections.The sampling treatment equipment is characterized in that a section conveying box is arranged on a sliding bearing table, a protrusion is arranged on the sliding bearing table, a bearing piece abuts against the protrusion, and a third cavity is formed in the section conveying box; a bearing piece is arranged in the third cavity, the two sides of the bearing piece are connected with the inner wall of the third cavity, the bearing piece abuts against the bearing piece, the slice can fall on the bearing piece, after the slice falls, the bearing piece moves downwards, and when the bearing piece abuts against the sliding bearing table, the angle of the bearing piece is changed, and therefore the slice can fall off. Meanwhile, the slice floats on the liquid level, and when the second bearing plate moves upwards, the slice is attached to the glass slide, so that integration, high efficiency and stability of slicing, cleaning and collecting are realized.

The utility model provides a kind of perfusion bottle detection device, for cataract phacoemulsification instrument, perfusion bottle detection device includes support part and detection part, support part is used to place perfusion bottle, and detection part is used to detect the liquid level condition in perfusion bottle;Support part is the cylindrical structure with opening in side face and is surrounded to form a placement area, and perfusion bottle is placed in the placement area;Two sides of support part are all penetrated and are equipped with adjusting slide, two adjusting slides are symmetrically laid out, and detection part includes first detection piece and second detection piece, and first detection piece and second detection piece are respectively located in two adjusting slides and are slidably connected;In addition, first detection piece and second detection piece are connected by support band.

The invention relates to the technical field of computer vision, and discloses a blood culture specimen collection amount detection method and system based on computer vision, and the method comprises the following steps: image acquisition and three-dimensional attitude calculation; performing geometric correction on the image according to the three-dimensional attitude to obtain a corrected image; matching the corrected image with a preset bottle body geometric model, and performing liquid level identification and compensation according to a matching result; according to the compensation liquid level position and a preset bottle body geometric model, the blood sample volume is calculated, and the blood culture sample collection amount is output. According to the method, through a set of complete computer vision algorithm process, the limitation of a traditional manual method and the prior art in a complex actual scene is effectively overcome, the overall quality of blood culture is remarkably improved, and a reliable guarantee is provided for rapid and accurate diagnosis of blood flow infection.

The utility model relates to a monitoring device for pneumothorax, which comprises a drainage bottle comprising a bottle body and a bottle cap; the catheter penetrates through the bottle cap and extends to the position near the bottom of the bottle body, and the upper end of the catheter is connected to the drainage tube to drain liquid and / or gas in the thoracic cavity of the patient into the bottle body; the camera is arranged on one side of the drainage bottle to obtain an image; the image processing unit is connected with the camera and is used for receiving the image, processing the image to identify the liquid level in the guide pipe and the liquid level in the bottle body and generating a corresponding liquid level height data signal; and the signal processor is connected with the image processing unit and is used for outputting a height difference value between the liquid level in the guide pipe and the liquid level in the bottle body according to the liquid level height data signal in the guide pipe and the liquid level height data signal in the bottle body. The device can be used for pneumothorax treatment and can assist medical staff in monitoring the pressure in the pleural cavity and the treatment effect.

The in-vitro skin cryopreservation method comprises the following steps that S1, a certain amount of UW liquid is added into a base, and the liquid level is flush with a supporting plate 2; s2, the positions of a plurality of first clamping mechanisms are adjusted, and the in-vitro skin is placed on a supporting plate and makes contact with the first clamping mechanisms; s3, the positions of a plurality of second clamping mechanisms are adjusted, a top cover is aligned with the connection mechanism and pressed down, and the second clamping mechanisms and the first clamping mechanism clamp the edge of the in-vitro skin; s4, the adjusting mechanism is rotated, so that the first clamping mechanism and the second clamping mechanism slightly pull the in-vitro skin to extend towards the periphery; and S5, preserving the in-vitro skin in a sterile environment at the temperature of 4 DEG C or below.

A method for estimating extracorporeal blood volume in at least a portion of a fluid canister. A light source may be activated, and an image of the fluid canister is captured with an optical sensor. The image may be a color frame of a video stream. A color-related feature is extracted from at least a portion of the image. A concentration of hemoglobin is estimated based on the extracted color-related feature. A fluid level of fluid within the fluid canister may be estimated from the image. Extracorporeal blood volume based on the estimated concentration of hemoglobin and a fluid volume or the estimated fluid level. The estimated extracorporeal blood volume is displayed on a display. The estimated extracorporeal blood volume and the estimated fluid level may be monitored over time. The optical sensor may be disposed on a handheld mobile device mounted to a side of the fluid canister.