156results about "Burettes/pipettes" patented technology

A thermopneumatic interface includes one or more pneumatic inlet ports in fluid communication with one or more pneumatic outlet ports and a cooling loop extending through the thermopneumatic interface. The cooling loop is configured to maintain the thermopneumatic interface at a baseline temperature. The one or more pneumatic outlet ports are configured to contact a surface of a microfluidic chip. Each pneumatic inlet port is configured to receive a change in pressure and provide the change in pressure to a corresponding pneumatic outlet port. The thermopneumatic interface is configured to maintain the microfluidic chip at the baseline temperature.

The application discloses a liquid synchronous proportioning and sampling automation device and belongs to the technical field of laboratory automation equipment. The module comprises a mechanical execution unit and a control unit. The control unit stores individualized parameters of each container and executes a core uniform sampling algorithm: the volume of solute and solvent is calculated according to the target total amount and concentration ratio; the solvent liquid feeding time length is calculated at a set solvent speed; the required solute liquid feeding speed of the solute is inversely deduced according to the solvent liquid feeding time length; and finally, the solvent pump and the solute pump are controlled to synchronously operate at their respective speeds for the solvent liquid feeding time length, so that real-time uniform mixing and sampling are realized. The application integrates automatic cleaning, parameterized batch management, intermittent liquid feeding and other functions, solves the problems of low proportioning efficiency, uneven mixing, poor precision and easy cross contamination in the prior art, and realizes efficient, accurate and flexible automatic liquid filling.

The application provides an injector, comprising an injector cavity, a push rod, a piston, an injection part and a cleaning branch pipe. The injection part is arranged at a first end of the injector cavity, a second end of the injector cavity is provided with a first opening, and the first end of the injector cavity is opposite to the second end of the injector cavity. The push rod is connected with the piston, and the push rod drives the piston to reciprocate in the injector cavity through the first opening. A side wall of the injector cavity is provided with a second opening, and the cleaning branch pipe communicates with the injector cavity through the second opening. When the injector is cleaned, the push rod drives the piston to move to a first space in a direction away from the injection part, so that the cleaning liquid flows into the injector cavity through the cleaning branch pipe and flows out from the injection part, and the first space is a space region between the first opening and the second opening. In this way, the cleaning liquid can flow in from the cleaning branch pipe and flow out from the injection part, without manually disassembling and cleaning the injector, and mechanical damage to the injector itself and the connecting components of the pipetting station is reduced.

The present invention relates to a mini-pipette, and more particularly, to a mini-pipette which has capacity varying means that can vary the movement distance of a push button reciprocating in the outer body to generate suction force so that a variety of samples can be easily collected. The present invention provides a mini-pipette comprising: an outer body having a hollow movement space and a suction passage formed at a lower part of the outer body; a push button for generating negative or positive pressure in the suction passage while reciprocating in the movement space of the outer body; elastic means for elastically supporting the push button in the movement space; and a capacity varying means formed inside the outer body, for varying a movement distance of the push button in the movement space.

The utility model relates to medical supplies technical field, concretely relates to a kind of anti-pollution double-channel specimen transfer tube, including outer shell, the lower shell is arranged in the bottom of outer shell, fixedly connected with hose between the outer shell and lower shell, specimen warehouse body is fixedly connected in the inside of outer shell, the liquid inlet pipe is fixedly connected in the bottom of specimen warehouse body, the one-way duckbill valve is fixedly connected in the inside of liquid inlet pipe, by the extrusion of the hose, the fixed liquid stored in the cavity between outer shell and specimen warehouse body is unilaterally entered into the inside cavity of specimen warehouse body from liquid inlet pipe and one-way duckbill valve, completely immerse specimen warehouse body internal organization, the double-layer cavity structure formed by outer shell and specimen warehouse body, cooperate the extrusion function of the hose in bottom, realize the directional delivery of fixed liquid from the storage cavity between outer shell and specimen warehouse body to specimen warehouse body, solve the problem that traditional single-cavity pipe fixed liquid adds complicatedly, organization is not completely immersed.

A non-contact deposition system includes a jetting assembly including at least one microvalve. The microvalve includes an orifice plate defining an orifice therethrough. An actuation beam is disposed in spaced relation to the orifice plate. The actuation beam includes a base portion and a cantilever portion extending from the base portion toward the orifice and movable between a closed position and an open position. A seal structure including a sealing member is disposed at an overlap of the cantilever portion. A fluid manifold is coupled to the microvalve and defines a fluid reservoir containing a pressurized fluid. When the actuation beam is in the closed position, the cantilever portion is positioned such that the seal structure seals the orifice to close the microvalve, and in the open position, fluid is dispensed from the orifice toward a substrate and deposited thereon.

According to an example aspect of the present invention, there is provided an adapter for holding a pipette, the adapter comprising a body element, said body element configured to hold a pipette; wherein the adapter is configured to be attached to at least one rail at any point along the rail, said at least one rail comprising at least one electrical conductor, said electrical conductor extending at least partially along the length of the at least one rail.

A method for preparing an aliquot of solution is disclosed. The method includes agitating the solution with a baffle at a predetermined mixing speed to suspend the plurality of particles in the solution, wherein the baffle positioned at least partially within a vessel containing the solution, and wherein the vessel is engaged with a vessel receptacle configured to hold the vessel. The method also includes withdrawing, during the agitating, the aliquot of solution from the vessel with a pipette, such that an end of a pipette tip is positioned within the vessel.

The invention relates to a multi-channel lower part (20) for a fluid delivery device (100). The multi-channel lower part (20) comprises a housing (22) in which a plurality of parallel channels (31-38) for accommodating a fluid (40) are arranged, wherein each channel comprises a cylinder (39) which is delimited in axial direction by a displaceable piston (42), wherein end sections of the displaceable pistons (42) are accommodated in a piston operator (44) such that the pistons (42) are each displaced by the same distance by displacement of the piston operator (44). It is provided that a first accommodation (50) for a first carrier element (52) is formed on the housing (22) in which a plurality of channels (31-38) are accommodated and a second accommodation (60) for a second carrier element (62) is formed on the housing (22) in which a different number of channels (71-86) than the first carrier element (52) are accommodated. Here, the first carrier element (52) and the second carrier element (62) can each be reversibly releasably fixed in the housing (22).

This invention discloses a gene sequencing pipetting assembly, including a pipetting module and a cleaning assembly. The pipetting module includes a reagent compartment for storing reagents, a reagent needle assembly for drawing or injecting reagents, and a pipetting drive assembly for driving the movement of the reagent needle assembly. The reagent needle assembly includes a reagent needle and a pipetting pump connected to the reagent needle. The reagent needle draws reagents from the reagent compartment and injects the reagents into a flow cell assembly under the action of the pipetting pump. The cleaning assembly includes a cleaning tank for storing cleaning solution, an inner wall cleaning unit for cleaning the inner wall of the reagent needle, and an outer wall cleaning unit for cleaning the outer wall of the reagent needle. This invention also proposes a gene sequencing system and a gene sequencing pipetting method. The gene sequencing pipetting assembly, pipetting method, and gene sequencing system of this invention utilize a reagent needle to transfer all reagents, which not only effectively simplifies the structure but also facilitates cleaning.

The invention relates to a transfer device (40) for inserting a pipette holder (41) into a pipetting device (42), comprising: - a comb structure (43) with a longitudinal strut (44) and a plurality of transverse struts (45, 46) arranged perpendicular to it, which are arranged parallel and equidistant to each other and which comprise two outer transverse struts (45) and several inner transverse struts (46) arranged between the outer transverse struts (45), wherein the longitudinal strut (44) and the two outer transverse struts (45) are designed in the form of a three-sided frame (47), - at least one retaining element (48) arranged on the frame (47), which is designed such that the pipette holder (41) can be locked in at least one axis in the transfer device (40). The invention further relates to a transfer system (55), a pipetting system (80) and a method for inserting a pipette carrier (41) into a transfer device (40).

The application discloses a kind of experimental sintering cup test systems, including sintering cup, mixing hopper, pipe assembly and cloth assembly, the top of sintering cup is equipped with inlet;Mixing hopper is arranged in the upper portion of sintering cup, and the mixing cavity for material mixing is equipped in the mixing hopper;Pipe assembly is arranged between the mixing hopper and the sintering cup, and is used to guide the material discharged from the mixing hopper to enter the sintering cup, and the pipe assembly is equipped with the discharge port corresponding to the inlet;Cloth assembly is rotatably arranged on the discharge port of the pipe assembly, and the material of the pipe assembly enters the inlet under the guidance of the cloth assembly, and the rotational movement of cloth assembly can dynamically adjust the falling path and distribution density of material, so that the mixed material forms the segregation layer structure in the actual production when entering the inlet of sintering cup, and truly reflects the key influence of segregation on the permeability of material layer and fuel distribution.

Disclosed herein are embodiments of an apparatus for measuring an amount of analyte in a biological sample, the apparatus comprising a pipetting unit for transferring an aliquot of a received biological sample into a sample receptacle for analysis of the aliquot of the received biological sample, wherein the pipetting unit comprises a sample transfer needle, the needle comprising a circumferential wall, the circumferential wall defining an elongated lumen surrounded by the circumferential wall.

The invention relates to a pipette holder (1) for receiving pipette tips (2), with a plate (3) which has a plurality of elongated holes (4) which extend along an axis parallel to a length (5) or width (6) of the plate (3) and are arranged parallel to each other. The invention further relates to a system (7) comprising a pipette holder (1) and a plurality of pipette tips (2).

The utility model discloses a handheld trace liquid nitrogen transfer device, including storage cylinder, the top surface of storage cylinder is installed with module box, the bottom surface of storage cylinder is installed with conical barrel, the bottom surface fixed connection of conical barrel has screw pipe, the inner top wall of conical barrel is installed with micro two -way pump, one end communication of micro two -way pump has first pipe line, and first pipe line passes through the inside of conical barrel and is linked with storage cylinder, the other end communication of micro two -way pump has second pipe line, and micro flow sensor and micro electric valve are installed on second pipe line.

The present invention relates to a multi-channel lower component (20) for a liquid delivery device (100), comprising: - a piston actuator (40) for simultaneously moving a plurality of pistons (75); - a plurality of receiving volumes (80, 81, 82, 83, 84, 85, 86, 87) arranged parallel to each other for receiving fluid, wherein each receiving volume (80, 81, 82, 83, 84, 85, 86, 87) is defined by one of the pistons (75); - a housing (22) having a spring chamber (15) for receiving a spring (52) for the piston actuator (40) and a receiving chamber (17) for receiving the plurality of receiving volumes for receiving fluid. The invention relates to a fluid delivery device (100) having a multi-channel lower component (20) in a contact area (60) at or within a spring chamber (15), wherein: a first guide (54) for a piston actuator (40) or a component (56, 58) connected to the piston actuator (40) is provided in the spring chamber (15), and a second guide (68) for a piston actuator (40) or a component (102, 104) connected to the piston actuator (40) is provided on the inner side of the housing (22) facing the receiving chamber (17). The invention further relates to a fluid delivery device (100) having such a multi-channel lower component (20).

This utility model discloses a fully automatic multifunctional liquid handling system, relating to the field of medical devices. It includes a translation frame and a lifting module, a shaker, a waste liquid collection assembly, a centrifuge tube support assembly, and a suction head support assembly mounted on the translation frame. The lifting module has a multi-channel pipette group and a single-channel pipette group. Below the multi-channel pipette group, the translation frame has a carrier switching platform, and the translation frame is equipped with a linear transmission mechanism to drive the movement of each component. The multi-channel pipette group includes 96-channel and 4-channel pipettes, and the single-channel pipette group features various unique designs such as variable-range single-channel pipettes. This application achieves the technical effects of fully automatic multifunctional liquid handling, meeting different pipetting needs, improving liquid handling efficiency and flexibility, facilitating operation and maintenance, and being applicable to various liquid handling scenarios.

The invention relates to a pipetting device (1) comprising an electronic pipette (2) and an actuating device (4) for the electronic pipette (2). The actuating device (2) comprises an actuating element (5) and a fastening device (6) for securing the actuating device (4) to the pipette (2).

This invention provides a pipetting method and system, relating to the field of pipetting mechanism technology, and solves the problem of the lack of real-time judgment on whether the actual liquid level height has an error in the prior art. The main technical solution of this invention is as follows: The encoder value on the pipette is collected when the pipette begins to draw sample liquid, and this value is used as the first encoded value. Simultaneously, the encoder value on the pipette is collected during the sample drawing process, and this value is used as the second encoded value. A first change value between the first and second encoded values ​​is calculated, and this first change value is matched with a pre-defined encoded value. This achieves control over the amount of sample liquid drawn by the pipette, thereby enabling real-time judgment on whether the actual liquid level height has an error, improving efficiency and reducing the impact on subsequent production.

The application provides a liquid separation system, which belongs to the technical field of medical devices. The liquid separation system comprises a first conveying device, a second conveying device, a sub-tube transfer device, a pipetting device and a controller. The first conveying device is provided with a first conveying part, which is used for transferring a mother sample module into the first conveying device or transferring the mother sample module in the first conveying device out. The second conveying device is provided with a second conveying part, which is used for transferring a carrier into the second conveying device or transferring a sub-sample module from the second conveying device. The second conveying device has a sub-tube loading position and a liquid discharging position. The first conveying device has a liquid suction position. The controller is in communication connection with at least the first conveying part, the second conveying part, the sub-tube transfer device and the pipetting device. The liquid separation system provided by the application realizes two independent conveying devices, avoids track blockage caused by the increase of total sample amount after liquid separation, and ensures the liquid separation efficiency and smoothness.

A pipette 10 for aspirating and / or dispensing liquids comprising a pipette tip 100 and a plunger 200. The pipette tip has a proximal end 101 and a distal end 102 defining a longitudinal axis 1 therebe

The utility model relates to a kind of multifunctional detection platform, including work platform, and work platform includes heating oscillation module, dilution module, dilution module includes several dilution bins and peristaltic pump, sample port and constant-volume port are set on dilution bin, constant-volume port is located above sample port, magnetic stirrer is set below dilution bin, work platform includes several supporting table, and work platform upper includes clamping mechanism, multi-union variable-distance pipetting mechanism, detection module is set below work platform.The utility model is integrated with pipetting, culture, heating, oscillation, detection and the like multifunction, and usage mode is flexible, and application scene is various.

This utility model discloses a sampling device for chemical analysis and detection, relating to the field of chemical apparatus technology. It includes a second housing, with a first housing mounted on its upper surface. The first and second housings are adhered and fixed together. A battery is installed inside the first housing. A through groove is formed at the bottom of the second housing. A miniature electric push rod is located above the interior of the second housing and is fixedly connected to it. A hollow tube is located below the miniature electric push rod inside the second housing. The device designed in this utility model allows the operator to hold a disposable straw and install the threaded straw into a threaded ring. It is simple to operate and has good sealing performance. When the button is pressed, the output shaft of the miniature electric push rod retracts, causing the rubber disc to gradually move upwards. When the disposable straw is inserted into the chemical liquid, the chemical liquid can be drawn into the disposable straw with high extraction efficiency.

This utility model relates to the field of experimental equipment in the medical field, specifically disclosing an adjustable-pitch pipette. The lifting base has a longitudinal limiting shaft, which limits its vertical movement. A first pitch-changing shaft rotates at its upper limit on the lifting base, and the suction port moves laterally within its limit. A first transmission component is fixedly mounted on the first pitch-changing shaft, and the first and second transmission components rotate in a coordinated manner. The second transmission component rotates synchronously with the longitudinal limiting shaft. The circumferential surface of the first pitch-changing shaft has a spirally arranged first pitch-changing groove. The suction port is fixedly equipped with a channel movable slider, which slides within the first pitch-changing groove. The suction rod slides within its limit within the suction chamber, and the channel seat moves laterally within its limit. This utility model, through the cooperation of the first pitch-changing shaft and the channel seat, allows the spirally shaped first pitch-changing shaft to adjust the pitch of the movable suction port and the channel seat during rotation. This reduces the overall size of the machine, significantly improves space utilization, and increases pipetting accuracy.

This utility model discloses a liquid extractor, belonging to the field of cell preparation technology, comprising: a needle, a liquid guide tube, and an exhaust tube. The needle has an inlet hole at its head and is used to penetrate into a liquid storage container. The needle also has an outlet hole and an exhaust hole communicating with the inlet hole. The liquid storage container is located above the needle. The liquid guide tube communicates with the outlet hole, and the end of the liquid guide tube away from the needle is adapted to selectively connect to a plug or a cell preparation device. The exhaust tube communicates with the exhaust hole. According to this utility model, the liquid extractor can be used to continuously inject physiological saline into a cell preparation device and can prevent physiological saline leakage.

This invention relates to the field of pipetting equipment technology, specifically a pipetting channel compatible with both large-volume pipetting and micro-volume spraying, comprising a large-volume pipetting module and a micro-volume spraying module. The large-volume pipetting module includes a motor, lead screw, slider seat, bearing seat, pipette tip holder, pipette tip, and push rod. The micro-volume spraying module includes an electromagnet and a microcontroller connected to the electromagnet. During aspiration, the slider seat moves upward, causing the push rod and piston head to move upward to draw in liquid. During large-volume discharge, the electromagnet controls the microcontroller to move downward, pressing the control block against the slider seat, and the slider seat moves downward, causing the push rod to move downward synchronously to discharge liquid. During micro-volume spraying, the slider seat first moves downward by a preset distance, and the electromagnet controls the microcontroller to impact the control block at high speed, causing the push rod to move downward at high speed and spray out a micro-volume of liquid. This invention integrates large-volume pipetting and micro-volume spraying into one compact structure, enabling micro-volume non-contact spraying and avoiding cross-contamination.

The application provides a cartridge air pressure tube assembly and a pipetting system, which are used for cooperating with liquid suction or injection operation in a cartridge, wherein the cartridge comprises a cartridge shell, the cartridge air pressure tube assembly comprises an air pressure tube and a pump body, the air pressure tube and the pump body are provided in a split mode, the air pressure tube is assembled on the cartridge shell, and the pump body is used for being assembled in the air pressure tube when needed, so as to form a sealed injection pump with the air pressure tube.

The capillary blood pipette tip system of the present invention includes a pipette tip for collecting capillary blood including a sampling unit having a capillary tube having a first diameter so as to sample a capillary blood; a sample storage unit having a first extension end formed from a distal end of the capillary tube of the sampling unit so as to have a larger area than the sampling unit; a sealing unit closely adhered to a distal opening of the sample storage unit and broken by a quantitative syringe introduced from the outside; a shielding wall surrounding the sealing unit to prevent the sample from splashing from the sample storage unit to the outside when the sealing unit is broken by the quantitative syringe; and a handle unit which is held by a user to sample using the sampling unit; an immunoassay cartridge having at least one pipette tip mounting well having a plunger that presses a sample of a sampling unit of the pipette tip from the bottom to the top when the pipette tip is coupled to the top; and a quantitative syringe for quantitatively sampling the capillary blood collected in the upper part thereof by approaching through the upper part of the pipette tip, when the capillary blood from the sampling unit is collected in the upper part by the pressurization of the plunger during the coupling of the pipette tip to the immunoassay cartridge.