63 results about "Bubble Detector" patented technology

An exposure apparatus, wherein an exposure of a substrate (P) is carried out by filling at least a portion of the space between a projection optical system and the substrate (P) with a liquid and projecting an image of a pattern onto the substrate (P) via the projection optical system and the liquid, includes a bubble detector (20) which detects air bubble or bubbles in the liquid between the projection optical system and the substrate (P). Consequently, the exposure apparatus is capable of suppressing deterioration of a pattern image caused by bubbles in the liquid when an exposure is carried out while filling the space between the projection optical system and the substrate with the liquid.

An automated bulk dispensing system and a method of use including selectively receiving a predetermined amount of radioactive liquid from a second container into a third container, selectively receiving a predetermined amount of nonradioactive liquid from a first container into a fourth container or directly into the third container depending on whether kits or multi-dose containers of medicine are desired. Preferably, this is for nuclear pharmaceuticals. Displacement mechanisms that are connected to the third container and fourth container are for mixing and dispensing liquid. There is at least one control valve, preferably three control valves, which are each controlled by drive mechanisms. The mixed liquid from the third container can be transferred to a recipient container. There is also a gas vent and bubble detector to eliminate bubbles with a processor that is also utilized to control the displacement mechanisms and the drive mechanisms.

The invention discloses an integrated digital transfusion apparatus and a transfusion monitoring and management method thereof. The integrated digital transfusion apparatus is mainly structurally characterized in that a shell of devices including a control system, a display and the like and a transfusion tube clip and device shell are respectively fixed onto an integrated transfusion support and device shell. A touch display, a microprocessor, a microphone/speaker, a scanner, a wireless network connection device, a miniprinter, a transfusion tube, a Murphy dripper clamping groove, a finger peristaltic pump, a photoelectric droplet detection device, a pressure detector and an ultrasonic bubble detector are mounted on the integrated digital transfusion apparatus. Data acquired by different parts in the transfusion apparatus are used for mutual comparison of transfusion parameters. Software computation and simulation techniques are used during transfusion, and nurses can well know detailed transfusion conditions of each patient in transfusion by directly observing simulated transfusion bottles/bags and tubes and simulated transfusion apparatuses on software of the transfusion apparatuses and software on external computers, setting operation of various transfusion parameters, setting alarm thresholds of the various transfusion parameters and the like.

Air bubbles may be characterized by an air bubble detector by choosing an optimum set of frequencies and then comparing a return signal from a sensor receiving those frequencies against an internal reference. The number of pulses that exceed the internal reference represents a width and may be counted. The width, as counted, may be correlated to bubble characteristics including volume.

This invention discloses a modular system having a base module, a mid-section control module, and a display module for preparing and administering a gas-enriched bodily fluid. Gas-enrichment is achieved by a gas-enriching device which can be in the form of a disposable cartridge. During operation, the gas-enrichment device is placed in an enclosure within the control module. An electronic controller manages the various aspects of the system such as the production of gas-enriched fluid, flow rates, bubble detection, and automatic operation and shut down. The system includes a combination bubble detector/flow meter that uses a single ultrasonic probe for detecting bubbles and measuring fluid flow rate.

A pump system selectably controls the temperature, flow rate, flow volume, and flow pressure of a fluid being infused into a patient's body. The pump system includes a cartridge and components that removably connect with a pump housing and corresponding components, providing simple attachment of the cartridge to the pump housing. The pump housing includes a pressure sensor, a bubble detector, and a temperature sensor on a first side of the pump housing, and an engaging actuator and a central controller. The cartridge includes on a first side a heat exchanger, a pressure receptor correspondingly aligned with the pressure sensor, and a detector interface correspondingly aligned with the bubble detector and temperature sensor. Upon aligning the cartridge with the pump housing and actuating the engaging actuator, the pressure receptor communicates with the pressure sensor and the detector interface aligns with the bubble detector and temperature sensor.

A bubble detector utilizes an ultrasonic transducer to sample bubbles as they pass the transducer. The envelope of the return signal is analyzed to determine the volume of each sampled bubble. If the total volume of bubbles sampled within a certain period of time exceeds a desired maximum volume, the bubble detector may initiate a system shut down. A bubble detector can be evaluated or calibrated by introducing bubbles into a conduit, detecting the bubbles introduced into the conduit using visual inspection or a bubble detector of known resolution and comparing the results with the examination of a bubble detector under evaluation.

The invention relates to a portable blood purifying system, which comprises a high throughput dialyzer with an arterial duct, a venous duct, a washing liquid tube and a transfusion tube; the arterial duct is in turn connected in series with an arterial valve, an arterial pressure sensor and a blood pump; the venous duct is in turn connected in series with a venous valve, a venous temperature sensor, a venous bubble detector and a venous pressure sensor, so that an external circulation unit is formed; the washing liquid tube is connected in series with a pre-charging valve and is communicated with a washing liquid container; the transfusion tube is in turn connected in series with a temperature controller, a transfusion tube bubble collector and a transfusion pump, and is communicated with a waste liquid container, so that a waste liquid processing unit is formed; and the system also comprises a transfusion pump, a temperature control device, a transfusion tube, a gating valve and a first transfusion branch and a second transfusion tube branch, so that a transfusion unit is formed. The system is simplified in structure and convenient to carry; and the system is suitable for patients to do short-time dialysis for several times or night dialysis treatment at home as household treatment equipment, so that toxin tolerance of dialysis patients during dialysis period is relieved while medical cost is reduced.

A heat exchanger leak detector employs a bubble detector to detect gas pressure build up in a heat exchanger second side from leakage of pressurized gas introduced in a heat exchanger first side.

The invention discloses a gravity transfusion pump with high flow velocity control accuracy. The gravity transfusion pump comprises a main engine and a detection and control apparatus, wherein the main engine comprises a master movable power supply, a shell with a suspension function, a weighing sensor, a master control circuit board, a liquid crystal display screen, a master Bluetooth module and keys; the detection and control apparatus comprises a detection and control box, a slave movable power supply, a slave control circuit board, a bubble detector, a flow velocity controller, a slave Bluetooth module, a motor zero switch and a pump door switch; the master movable power supply, the weighing sensor, the master control circuit board, the liquid crystal display screen, the master Bluetooth module and the keys are arranged in the shell; and the slave movable power supply, the slave control circuit board, the bubble detector, the flow velocity controller, the slave Bluetooth module and the pump door switch are arranged in the detection and control box. The gravity transfusion pump disclosed by the invention has the advantages of high transfusion precision, small overall structure, simplicity and convenience in operation and use and the like.

The invention relates to an optical fiber producing coating central concentrated feeding system, and belongs to the technical field of optical fiber manufacturing and processing. The optical fiber producing coating central concentrated feeding system is composed of a raw material feed cylinder, coating bubble detectors, a booster pump, a coating reflux pipe, a main pipe, branches pipes, and a drawing coating pipe; and a coating bubble detecting reflux system and a concentrated feeding system are formed respectively. Only a central feeding station is needed to be replaced when coating replacing is carried out, so that coating replacing frequency is reduced, coating system stability is improved and coating waste is reduced in drawing process, automation degree is high, and labour intensity of workers is reduced. When coating is replaced, problems of the conventional coating system, that about 1kg of coating left in a raw material barrel is wasted, a large amount bubbles are generated in coating replacing process, drawing coating can be carried out after discharging 1 to 3kg of the coating containing bubbles, a large amount of coating is wasted, and production cost is increased, is solved.

The invention discloses a bubble monitoring device used in a portable blood purification system, comprising an ultrasonic bubble detector, a signal processor, a comparator, a CPU processor and an alarm device; the ultrasonic bubble detector is installed on both sides of a blood catheter; the signal processing The device is connected with the ultrasonic bubble detector to eliminate the interference signal and form a regular rectangular signal pulse width Tc; the comparator is connected with the signal processor, and the CPU processor is connected with the comparator and the alarm device respectively. The comparator compares the rectangular signal pulse width Tc with the set large bubble threshold Tc1, no bubble and micro bubble threshold Tc0, when Tc≧Tc1, the alarm device is activated directly; when Tc≦Tc0, it is directly filtered; when When Tc0﹤Tc﹤Tc1, the cumulative calculation is carried out, and when the cumulative amount per minute is greater than the set value T, the alarm device is activated. The reliability of the air bubble monitoring device of the present invention has been greatly enhanced, which not only ensures timely and accurate alarm of the air bubbles, but also effectively shields various disturbances.

The invention relates to a device for eliminating optical fiber cable feeding bubbles. The device is characterize in that a transmission pipe is connected between a ton barrel and a buffer tank; a first diaphragm pump and a bubble detector are arranged on the transmission pipe; a bubble reflux pipe communicated with the ton barrel is connected between the bubble detector and the buffer tank and ispositioned on the transmission pipe; an output pipe is connected between the buffer tank and a feeding tank; a second diaphragm pump is arranged on the output pipe; a weighing table is arranged at the lower end of the buffer tank; a water bath heating barrel is further arranged on the periphery of the buffer tank; a defoaming cavity is formed in the buffer tank; a vacuum pump control device is arranged at the upper end of the buffer tank and located in the defoaming cavity; a pressure detector electrically connected with the vacuum pump control device is further arranged in the defoaming cavity; the transmission pipe is connected with a feeding pipe in the defoaming cavity; and a flow divider is installed on the feeding pipe. The invention also discloses a method for eliminating optical fiber cable feeding bubbles. The invention aims to provide a scheme for reducing optical fiber coating bubbles, improve the percent of pass of optical fibers and reduce waste optical fibers.

The invention discloses a bubble monitoring device for a portable blood purification system. The monitoring device mainly comprises an ultrasonic bubble detector which comprises an ultrasonic transmitting device and an ultrasonic receiving device. The monitoring device functions through steps as follows: (1) acquiring the regular rectangular signal pulse width by processing the ultrasonic pulse signal detected by the receiving device through the signal processing module; (2) comparing the pulse width of the signal Tc and the set threshold by the comparator, large bubble threshold is Tc1, no bubbles and micro bubbles threshold is Tc0. When Tc >/= Tc1, the bubbles directly enter the CPU processor and start the alarming device; when Tc </=Tc0, the bubbles are directly filtered out; when Tc0 <Tc <Tc1, the bubbles enter the CPU processor and be cumulated, when the cumulative amount per minute is greater than the set value T, the alarming device is triggered. The reliability of the bubble monitoring device is greatly enhanced, timely and accurate warning of the bubble is guaranteed, and various disturbances are also effectively avoided.

The invention provides an electronic infusion pump and an exhaust control method. The electronic infusion pump comprises a microprocessor, an input module, a pumping module and a bubble detector. The input module is used for inputting an air displacement. The bubble detector is used for detecting bubbles in an extrusion pipe. The microprocessor is used for driving the extrusion pipe to discharge a liquid via the pumping module, and determining whether bubbles are detected by the detector, controlling the pumping module to drive the extrusion pipe to discharge a corresponding amount of soup according to the air displacement, to exhaust the bubbles out of a main pip if the bubbles are detected by the detector, otherwise, determining whether the present air displacement reaches up to the air displacement, and stop driving the pumping module to stop exhausting if the present air displacement reaches up to the air displacement, otherwise, continuing to detect whether bubbles are detected by the detector. By adopting the electronic infusion pump and the exhaust control method, an operator only need to set an air displacement, bubbles in the extrusion pipe can be automatically exhausted out of the main pipe, no worker needs to watch over the exhausting process, so the electronic infusion pump is convenient to operate, safe and reliable, and high in intelligence.

A portable hemodialysis system is provided including a disposable cartridge and a reused dialysis machine. The disposable cartridge includes a dialysate flow path and a blood flow path which flow in opposite directions through a dialyzer. The disposable cartridge includes a filter for removing waste products from the dialysate, and pressure and fluid flow sensors for measuring the pressure and fluid flow in the dialysate flow path and blood flow path. Preferably, the filter has a vapor membrane for releasing gases including ammonia, but not liquids such as the dialysate. The reused dialysis machine possesses a reservoir for dialysate, an ammonia sensor adjacent to the vapor membrane, a level sensor, a blood leak sensor, a venous blood line pressure sensor, a venous blood line bubble detector, pump motors, and a processor connected to the motors and sensors for controlling and monitoring hemodialysis treatment.

The present invention discloses an automatic heating type transfusion system. The automatic heating type transfusion system comprises an installing seat, a dropper and a transfusion tube; the installing seat is provided with a transfusion system plug and arranged over the dropper; the bottom of the dropper is connected with the transfusion tube; the transfusion system plug is provided with a needle hole; the tail end of the transfusion tube is connected with a needle seat; the transfusion tube is also provided with an adjusting switch; a floating ball, an upper portion of which is spherical shaped, is disposed in the dropper; the circumferential wall at a liquid outlet at the bottom inside the dropper is an inclined plane matched with a lower portion of the floating ball in the dropper; the tail end of the needle seat is provided with a needle bolt and an enclosed interface; the needle seat is also provided with an exhaust needle; the exhaust needle is communicated with an exhaust pipe; the exhaust pipe is equipped with an air filter; and the transfusion tube is provided with a bubble detector. The automatic heating type transfusion system has good safety performance and exhaust and bubble automatic detection reminding functions.

An exposure apparatus, wherein an exposure of a substrate (P) is carried out by filling at least a portion of the space between a projection optical system and the substrate (P) with a liquid and projecting an image of a pattern onto the substrate (P) via the projection optical system and the liquid, includes a bubble detector (20) which detects air bubble or bubbles in the liquid between the projection optical system and the substrate (P). Consequently, the exposure apparatus is capable of suppressing deterioration of a pattern image caused by bubbles in the liquid when an exposure is carried out while filling the space between the projection optical system and the substrate with the liquid.

Systems and methods for sensing bubbles during fluid infusion are disclosed. An infusion device comprises a pathway, a pump adjacent the pathway, one or more bubble sensors, and first and second modules. The pump alters the pathway to pump fluid through tubing received in the pathway. The bubble sensors are configured to detect bubbles in the fluid being pumped through the tubing. The first module is configured to generate a first alarm condition when the bubble sensors detect a bubble having a first volume above a first preselected threshold. The second module is configured to generate a second alarm condition when the bubble sensors detect a plurality of bubbles over a preselected period of time having a combined volume above a second preselected threshold. A third module may be also be used to record a total combined volume of bubbles detected by the bubble sensors during an infusion event.

The invention discloses a diaphragm infusion machine which comprises a diaphragm pump and a pulse damper, wherein the pulse damper is arranged at the outlet of the diaphragm pump; the diaphragm pump comprises a pump body, a diaphragm and a piston rod; a pump chamber is formed in the pump body; the diaphragm is arranged in the pump chamber; the piston rod communicated with the pump chamber is arranged in the pump body; a liquid inlet flow channel and a liquid outlet flow channel are formed in the pump body; one-way float valves are arranged in the liquid inlet flow channel and the liquid outlet flow channel; a bubble detector and a flow sensor are arranged at the outlet of the pulse damper; the bubble detector and the flow sensor are respectively with MCU; the MCU is connected with a driving motor of the diaphragm pump and a touch display screen; the diaphragm pump is connected with the driving motor; and the driving motor is a variable frequency motor. The technical aim of the invention is to provide the diaphragm infusion machine which can be automatically controlled. According to the machine, the condition that liquid medicine is contaminated by dropping debris due to friction of a sealing element is avoided, and infusion damping is avoided.

A method of diversion of an embolus during fluid circulation in an extracorporeal circuit which includes the steps of establishing a first circuit (100, 101a, 101b, 101c, 102, 103, 104, 106b, 106a, 107) between an outlet of a vascular system and an inlet of said vascular system; establishing a 5 second circuit (101b, 101c, 102, 103, 104, 106b, 108) configured to bypass said inlet and outlet; providing a fluid reservoir (102) a pumping means (103), and a bubble detector (105) in said circuits; detecting by means of said bubble detector (105) an embolus in said first circuit and sending a signal to an automatic embolus diversion supervisor (121) connected to said bubble detector (105); and controlling fluid flow direction means (110, 111) in dependence of the signal from said bubble detector (105); whereby said fluid flow direction means (110, 111) are controlled to redirect a detected embolus to said second circuit.