2871 results about "Fluidic channel" patented technology

In some implementations, a low dead space airway adapter for sampling fluid flowing through a ventilation assembly includes an outer wall configured to couple to an endotracheal (ET) tube adapter and an internal projection positioned at least partially within an internal cavity defined by the outer wall and configured to extend within an internal cavity of the ET tube adapter when the airway adapter is in use. The internal projection can include a fluid passageway configured for fluid communication with at least a portion of the internal cavity of the ET tube adapter and a free end comprising an opening in fluid communication with the fluid passageway. At least a portion of the free end can be chamfered around the opening and configured to contact an inner surface of the ET tube adapter when the outer wall is coupled to the ET tube adapter.

The invention relates to an implantable vascular support system (10), comprising:—a fluid channel (13) passing through the support system (10) and through which fluid can flow; —a first pressure sensor (18a, b) arranged and configured to determine at least a static pressure or a total pressure in the region of the support system (10); —a second pressure sensor (17) arranged and configured to determine at least a static pressure or a total pressure in the region of the fluid channel (13).

A regenerative filter that includes a filter housing having inlet and outlet zones; a fluid path provided between the inlet and outlet zones; a plurality of filter elements each having an outer surface filter media applied thereto and functioning to filter particulate or contaminants from the fluid path. The filter elements are disposed in an monolithic array. An inlet port arrangement is disposed at the filter housing leading to the inlet zone and is constructed and arranged to direct the fluid path into the filter housing in a manner so as to maintain a controlled turbulence at the inlet zone. The inlet port arrangement comprises a pair of inlet ports that are arranged in juxtaposition at the inlet zone and each having one end where the fluid flow enters. Embodiments that are considered as falling under the scope of the present invention include 1. Single inlet / two or more outlets; 2. Two or more inlets / single outlet, or 3. Two or more inlets and two or more outlets.

A fluid delivery system is disclosed which comprises at least one first supply station for supplying a first fluid and at least one second supply station for supplying a second fluid different from the first fluid. The fluid delivery system further comprises a pressurizing unit for pressurizing the first and second fluids, said pressurizing unit comprising first and second pump modules, and each pump module comprising a chamber and a piston provided with a plunger to define first and second variable-volume sub-chambers. The fluid delivery system further comprises first and second inlet fluid circuits, first and second outlet fluid circuits, and a first recirculation fluid pathway fluidically connecting the first and second variable-volume sub-chambers of a pump module. Moreover, a first actuator is associated to said first recirculation fluid pathway for managing the fluid passage in both directions between said first and second variable-volume sub-chambers of said pump module. Methods of operating the fluid delivery system are disclosed too.

Provided are a double-cavity micro-fluidic chip having a reaction cavity and a test cavity and used for nucleic acid test, and a test method thereof. A fluid channel is provided between the reaction cavity and the test cavity, and only one exhaust channel is provided. The combination of the fluid channel and the exhaust channel can automatically provide resistance for a sample entering the test cavity from the reaction cavity, thereby achieving a controllable transfer of the sample between the reaction cavity and the test cavity. A gravity micro-fluidic chip and a centrifugal micro-fluidic chip are designed. The gravity micro-fluidic chip has a multi-turning circuitous fluid channel of which the diameter is smaller than that of a sample injection channel, such that under the action of gravity, the sample can flow into a reaction cavity from a sample adding region but cannot flow into the fluid channel, and then under pressurization by a simple pressurization device, the sample can enter a test cavity from the reaction cavity. The centrifugal micro-fluidic chip provides an exhaust channel branched from a fluid channel, and makes the exhaust direction opposite to a rotary centrifugal direction and the position of an exhaust opening higher than that of the fluid channel; therefore, by combining the principle of internal and external balance of the atmospheric pressure and the centrifugal driving performance, the centrifugal micro-fluidic chip effectively controls the flowing of a gas and a liquid in reaction cavities and test cavities, so as to effectively control the amount of the sample entering each cavity, so that multiple nucleic acid tests can be completed simply by means of one or two times of centrifugation. In addition, for a chip which only has a reaction cavity, an exhaust channel is connected to a liquid storage cavity, and a gravity-driving chip and an asymmetric pressure-driving chip are designed, thereby effectively avoiding aerosol pollution.

The invention relates to the technical field of blood potassium detection, in particular to a blood potassium detection paper-based sensor and a preparation method and application thereof.The sensor is obtained by integrating a substrate, a sensing electrode and a whole blood microfluid channel, and the sensing electrode is located between the substrate and the whole blood microfluid channel; the whole blood microfluid channel comprises a serum diffusion area, a whole blood separation area positioned above the serum diffusion area and a blood potassium detection area positioned below the serum diffusion area; a blood separation membrane is also arranged in the whole blood separation area; the substrate is qualitative filter paper, and the sensing electrode comprises an all-solid-state PBA working electrode and an Ag / AgCl reference electrode; compared with the prior art, calibration is not needed when potassium ions in whole blood are detected, the whole blood sample can be directly used, centrifugal separation is not needed, the detection speed is increased, the hemolysis problem of the whole blood sample in blood potassium detection can be avoided, and the detection sensitivity, accuracy and stability are further improved.

The invention discloses a coating die head uniform coating distribution method based on a microfluid optimization technology, which comprises the following steps: S1, analyzing the rheological characteristics and coating requirements of a coating, and designing a flexible microfluid channel structure; s2, optimizing the geometric design of the channel by adopting a lattice Boltzmann method simulation technology; s3, the interaction between the coating and the die head surface material is simulated and analyzed through molecular dynamics, and adaptive data is generated; s4, based on the optimized geometric design and the adaptive data, an intelligent dynamic adjustment module is embedded, and a dynamic adjustment mechanism is constructed; s5, synchronous and uniform coating of multiple layers of coatings is achieved through a double-layer micro-channel structure; s6, the thickness and defects of the coating are monitored in real time by combining optical and pressure sensors, and a repair path is generated by combining a parrot optimization algorithm; and S7, an active heat management module is embedded, and the heating power is adjusted to maintain the optimal flowing state of the coating. According to the method, microfluid optimization and intelligent optimization methods are combined, and coating uniformity improvement, defect real-time repair and multi-layer synchronous coating are achieved.

The invention relates to the technical field of microbial culture, and discloses a cell culture device, which comprises: a plate body; the culture units are arranged on the plate body at intervals in the width direction of the plate body, and each culture unit comprises a plurality of base holes which are arranged at intervals in the length direction of the plate body and are used for culturing cells and fluid channels which are arranged between every two adjacent base holes; according to the flowing direction of the culture medium along the fluid channels, the two sections of fluid channels corresponding to the two upward sides of each base hole are called the upstream fluid channel and the downstream fluid channel of the base hole; a downstream hole wall is arranged at least between the fluid channel at the downstream of the base hole and the base hole, and a plurality of downstream gaps allowing the culture medium to pass through and limiting the cells to pass through are formed in the downstream hole wall in a cutting manner.

The present invention relates to a manifold fluid module. A manifold fluid module according to an embodiment of the present invention may include a manifold plate comprising fluid passages formed internally, a first heat exchanger coupled to the manifold plate and configured to exchange heat between a first fluid and a second fluid, a second heat exchanger coupled to the manifold plate configured to exchange heat between the first fluid discharged from the first heat exchanger and the second fluid, and a plurality of valves configured to control expansion or direction of the first fluid entering the first heat exchanger or the second heat exchanger, wherein the plurality of valves may be clustered on an upper part of the manifold plate.

A liquid cooling plate is configured to be in thermal contact with at least one first heat source and at least one second heat source. The liquid cooling plate includes at least one first heat dissipation part and a second heat dissipation part. The first heat dissipation part is configured to be in thermal contact with the first heat source and has a fluid chamber. The second heat dissipation part is connected to the first heat dissipation part and configured to be in thermal contact with the second heat source. The second heat dissipation part has a fluid channel, and the fluid channel is in fluid communication with the fluid chamber.

The invention discloses a low-flow precision detection metering method suitable for a water meter, which comprises the following steps: S1, arranging a texture coating on the surface of a fluid channel in the water meter, interacting a groove with fluid to generate periodic pressure pulsation, collecting a local pressure fluctuation signal generated when the fluid passes through the groove, and processing to obtain a first flow value; s2, full-band pressure pulsation signals at an outlet of the water meter are collected, a pressure-flow model is established, and a second flow value is obtained; s3, constructing a first fusion model, and inputting the first flow value and the second flow value into the first fusion model to obtain a preliminary fusion flow value; s4, inputting the preliminarily fused flow value and environmental parameters into a correlation model to obtain a corrected flow value; and S5, constructing a second fusion model, inputting the corrected flow value and the predicted flow value into the second fusion model, and outputting a low-flow metering result of the water meter. According to the invention, the applicability and reliability of the water meter in a low-flow scene are enhanced.

The invention discloses a nano-drug preparation system and a nano-drug preparation process. The nano-drug preparation system comprises a micro-fluidic chip, at least two feeding devices and a controller, the two feeding devices are communicated with the micro-fluidic chip and are respectively used for conveying different raw material liquids; each feeding device comprises a liquid path reversing coordination integrated block and two sucking and pushing mechanisms; the liquid path reversing coordination integrated block is provided with an input end and an output end; the two sucking and pushing mechanisms are both communicated with a fluid channel of the liquid path reversing coordination integrated block, each sucking and pushing mechanism achieves input or output of raw material liquid in a sucking or pushing mode, the driving ends of the two sucking and pushing mechanisms are both in signal connection with the controller, and the controller is used for controlling the two sucking and pushing mechanisms to alternately operate in the reverse direction; a one-way valve assembly is arranged in the liquid path reversing coordination integrated block. By means of the arrangement, the function of stably and continuously conveying raw material liquid without liquid mixing is achieved, the controllability of the preparation process of nano-drugs in the micro-fluidic chip is guaranteed, and the purpose of improving the preparation effect is achieved.

A fluid connector includes a shell having a fluid channel, a ball valve accommodated in the shell and having a through hole, a control element arranged outside the shell for controlling the ball valve to rotate, and a pin member. A front end of the shell for engaging a matching connector has an engagement hole. The control element controls the ball valve between a closed position and an open position. The through hole is in fluid communication with the fluid channel when the ball valve is at the open position. A front face of the shell has an accommodating hole for accommodating the pin member. A resilient member is arranged in the accommodating hole for supporting the pin member. The pin member is adapted to be guided by a guide structure and compress the resilient member to separate from the engagement hole of the matching connector.

A catheter comprises a catheter shaft having a fluid channel, an ultrasound transducer and a compliant balloon mounted on the catheter shaft and having an interior in fluid communication with the fluid channel and containing the ultrasound transducer. The compliant balloon includes a balloon wall having a working section radially surrounding the ultrasound transducer. The working section has a predetermined straightness when the working section has a first diameter and when the working section has a second diameter that is at least 2 mm greater than the first diameter. Other embodiments are also described and claimed.

Methods and apparatuses for utilizing triply periodic minimal surface structures for additive manufacturing of a thermal management system are disclosed, wherein the thermal management system comprises: a solid structure; a triply periodic minimal surface structure within the solid structure, wherein the triply periodic minimal surface structure comprises a first fluid channel and a second fluid channel; a first inlet coupled to the solid structure and configured to pass a first fluid into the first fluid channel; a second inlet coupled to the solid structure and configured to pass a second fluid into the second fluid channel; a first outlet coupled to the solid structure and configured to pass the first fluid out of the first fluid channel; and a second outlet coupled to the solid structure and configured to pass the second fluid out of the second fluid channel. Other embodiments are described and claimed.

A method of preconditioning a battery for use in an unmanned aerial vehicle unmanned aerial vehicle may include fluidly coupling a fluid channel of a thermal management apparatus to an opening in fluid communication with the battery, determining a predicted temperature change of the battery as a result of the unmanned aerial vehicle traversing a predetermined flight path, determining a target initial temperature for the battery, wherein the target initial temperature is based at least in part on the predicted temperature change and is configured to operate the battery within a preferred temperature range during traversal of the predetermined flight path, selectively actuating a covering of the opening to allow air from the fluid channel of the thermal management apparatus to the battery, and at least one of heating or cooling the battery to the target initial temperature by directing air to the battery.

The embodiment of the invention provides a flow cytometer, an optical signal collection lens and sample analysis equipment, and relates to the technical field of flow cytometers. The flow cytometer comprises a liquid path system and an optical system, the liquid path system comprises a sampling needle, a sheath liquid bottle and a flowing chamber, and the sampling needle and the sheath liquid bottle are both communicated with the flowing chamber and are respectively configured to convey a sample and sheath liquid to the flowing chamber; the optical system comprises a light source and an optical signal collecting lens, the optical signal collecting lens comprises a fluid channel, and the fluid channel is communicated with the flowing chamber; wherein the liquid path system further comprises a negative pressure tank and a waste liquid pump, the waste liquid pump is communicated with the flow chamber, the negative pressure tank is arranged between the waste liquid pump and the flow chamber, and negative pressure is formed in the negative pressure tank through work of the waste liquid pump, so that a sample is loaded to the flow chamber from the sampling needle and enters the fluid channel. Compared with the prior art, the flow cytometer has the advantages that the sample loading mode is improved, the operation procedure is simplified, and the continuous sample loading is realized.

The utility model provides an adsorption device for wafer processing, a wafer grinding device and wafer thinning equipment. The adsorption device comprises an adsorption plate, a suction cup, a through-flow shaft with an axial through hole and a mounting seat, and the adsorption plate is arranged in a containing cavity of the suction cup; the through-flow shaft passes through the binding surface between the mounting seat and the suction cup and extends into the suction cup, so as to avoid the binding surface between the suction cup and the mounting seat to suck fluid from the suction cup for wafer adsorption or input fluid into the suction cup for wafer release; the suction cup is provided with a fluid channel in fluid communication with the containing cavity, and the axial through hole is in fluid communication with the adsorption plate through the fluid channel. According to the technical scheme, the fluid path for vacuum adsorption or release of the wafer avoids the binding face between the suction cup and the mounting base, small particles are prevented from entering the binding face along with the fluid, the clean and tight binding state between the suction cup and the mounting base is guaranteed, the wafer grinding accuracy is guaranteed, and the wafer grinding quality is improved.

One or more example embodiments relates to an X-ray detector including at least one detector unit; and a temperature regulating unit including a fluid providing unit, a heat exchanger and at least one fluid channel, the fluid providing unit configured to provide a fluid, wherein the detector unit and the temperature regulating unit are positioned in a defined arrangement relative to one another and are moveable relative to an examination object to be mapped via X-ray transirradiation, the detector unit is configured to detect X-ray radiation incident upon an X-ray sensitive surface of the detector unit, and the at least one fluid channel is arranged such that heat is transferrable between the detector unit and the fluid.

Embodiments herein provide for fluidic cooling assemblies embedded within a device package and related manufacturing methods. In one embodiment, the integrated cooling assembly includes a semiconductor device and a cold plate attached to the semiconductor device. The cold plate has a perimeter sidewall, a top portion and pairs of opposing cavity sidewalls. The perimeter sidewall extends downwardly from the top portion to a backside of the semiconductor device to define a perimeter of the cold plate. Each pair of opposing cavity sidewalls extends downwardly from the top portion towards the backside of the semiconductor device to define a coolant chamber volume therebetween. A distance between each pair of opposing cavity sidewalls in a direction parallel with the backside of the semiconductor device defines a width of a corresponding coolant chamber volume and a spacing between adjacent coolant chamber volumes, wherein the ratio of width to spacing is about 1:1.

A fluid mattress includes:a fluid supply unit capable of supplying a fluid;a fluid path to which the fluid is supplied from the fluid supply unit;a plurality of first cells connected to each other;a plurality of second cells connected to each other;a first solenoid valve including a first end connected to the plurality of first cells and a second end connected to the fluid path;a second solenoid valve including a first end connected to the plurality of second cells and a second end connected to the fluid path;an external solenoid valve including a first end connected to an outside and a second end connected to the fluid path;a pressure sensor that measures a pressure of the fluid in the fluid path; anda controller that receives input of a measurement result by the pressure sensor, and controls the fluid supply unit, the first solenoid valve, the second solenoid valve, and the external solenoid valve.The controller can implementa first mode in which a pressure in the second cell is set to be a first pressure, and a pressure in the first cell is set to be equal to or lower than a second pressure lower than the first pressure, anda second mode in which a pressure in the first cell is set to be the first pressure, and a pressure in the second cell is set to be equal to or lower than the second pressure.The controller, when implementing the second mode by shifting from the first mode, stops the fluid supply unit, causes the first solenoid valve to be in a closed state, causes the second solenoid valve and the external solenoid valve to be in an open state, determines the first pressure based on time during when a measurement value by the pressure sensor changes from a third pressure lower than the first pressure and higher than the second pressure to a fourth pressure lower than the third pressure and higher than the second pressure, and causes the first pressure to be higher as the time is longer.

The invention relates to the technical field of double-ball valves, and discloses a double-ball valve with a self-locking protection function, which comprises a ball valve shell, a mounting space is arranged in the ball valve shell, a fluid channel is arranged at the center axis of the ball valve shell, and a plurality of valve balls are arranged in the mounting space of the ball valve shell. The inner side of the sealing cover is arranged to be in the shape of the semicircular groove matched with the valve ball, so that the valve ball can stably rotate in the sealing cover; when the contact ring in the sealing cover extrudes the valve ball, the sealing cover drives the sliding ring to slide along the interior of the sealing cylinder and extrudes the multiple extrusion springs, and the extrusion effect of the contact ring on the sealing cover on the valve ball is enhanced through the counter-acting force of the extrusion springs. And a gap is prevented from being generated when the valve ball and the inner wall of the ball valve shell rotate, so that the flow of the double-ball valve can be more accurately controlled.

A fluid connector includes a shell having a fluid channel, a valve member rotatably accommodated in the fluid channel and having a through hole, a control element connected to the valve member for controlling the valve member to rotate between a closed position and an open position, and an interlock system. The shell has an interface to abut a mating connector and an accommodating hole concavely formed from the interface. The interlock system includes two pins coaxially accommodated in the accommodating hole and a resilient system. The control element is operatively connected to the interlock system via a restricting member and an operating member.

Disclosed in the present disclosure is a multi-position controlled airway valve, including a venting control member; a valve body, provided with a fluid channel and a venting channel, in which the venting control member is provided on the venting channel; a valve core assembly, mounted in the fluid channel, controlling the fluid channel to switch between a connected state and a sealed state, wherein the valve core assembly in a filling mode controls the fluid channel to be in the connected state and abuts against the venting control member so as to keep the venting channel to be in a ventilated state. Disclosed is also a refilling device applied with the multi-position controlled airway valve and a refilling system applied with the refilling device, so as to achieve the objective of removing air and residual gases promptly when refilling with new fuels.

Disclosed are a pool cleaning device and a corresponding control method. The pool cleaning device includes: a fluid ejecting unit including a fluid channel through which water flows and a vector nozzle, an inlet of the vector nozzle being rotatably connected with the fluid channel; a first driving unit configured to drive water to be ejected from an outlet of the vector nozzle via the fluid channel; a housing, with at least two discharge openings arranged thereon; and a second driving unit configured to drive the vector nozzle to rotate so that the outlet of the vector nozzle is at least partially aligned with one of the at least two discharge openings.

An evaporation device includes a sample fluid channel extending from a sample fluid inlet to a sample fluid outlet. The evaporation device is configured to evaporate a solvent of a sample fluid containing a target analyte to increase the concentration of the target analyte. The device includes a housing enclosing and defining a testing environment within which the evaporation device is disposed. The housing includes a heater, a temperature sensor, and a humidity sensor. A pump coupled to a gas inlet tube is configured to cause a gas flow within the testing environment adjacent to the evaporation device. A controller in communication with each of the heater, the temperature sensor, and the humidity sensor, is configured to activate the heater in response to at least one of a temperature value or a humidity value of the testing environment.

The utility model discloses a charging plug, a charging gun and a connector assembly, and relates to the technical field of ground maintenance. The charging plug comprises a plug body, the end face of the plug body is provided with a plurality of charging terminals and a plurality of fluid interfaces, the plug body further defines a fluid channel and a fluid flowing cavity, and the fluid channel is used for being connected with a cooling source; the fluid flowing-through cavity is communicated with the fluid channel and the fluid connector, the fluid flowing-through cavity is used for allowing heat exchange fluid from a cooling source to flow through, and the fluid connector is used for being communicated with a cooling loop of external equipment; the fluid channel defined by the charging plug is used for being connected with a cooling source, and the fluid flowing cavity is communicated with the fluid channel and the fluid interface, so that the charging plug can be conveniently and quickly communicated with a cooling loop of external equipment such as an electric vehicle through the fluid interface on the charging plug. Therefore, heat management is efficiently carried out on parts to be cooled, such as the power battery pack, of the external equipment, and the heat management capability is improved.

The utility model provides a microfluid sample detection device which comprises a fluid inlet, a microfluid channel, a fluid outlet, a reaction area, a liquid collecting area, a pump body and a valve body, the valve body comprises a substrate, a double-sided colloid and a flexible diaphragm, a cavity is formed between the upper surface of the plastic substrate and the lower surface of the flexible diaphragm, the cavity is opened when the flexible diaphragm is loosened, and the cavity is closed when the flexible diaphragm is tensioned; the valve body comprises a first valve body, a second valve body, a third valve body and a fourth valve body, the second valve body and the third valve body are arranged between the pump body and the microfluid channel and located on the downstream portion of the first valve body, and the working states of the third valve body and the fourth valve body are opposite. Moreover, the parallel scheme further comprises a conductive system composed of electrodes, the conductive system at least comprises two electrodes, and the electrode sensing ends are located at the two ends of the reaction area respectively. The microfluidic sample detection device is loaded in a detection device to form a microfluidic sample detection system.

A fluid connector includes a shell having a fluid channel, a ball valve accommodated in the shell and having a through hole, a control element arranged outside the shell for controlling the ball valve to rotate, and a pin member. A front end of the shell for engaging a matching connector has an engagement hole. The control element controls the ball valve between a closed position and an open position. The through hole is in fluid communication with the fluid channel when the ball valve is at the open position. A front face of the shell has an accommodating hole for accommodating the pin member. A resilient member is arranged in the accommodating hole for supporting the pin member. The pin member obstructs the rotation of the control element unless it is in a set position.