58 results about "Dose accuracy" patented technology

The invention relates to: A portable medication delivery device (1) comprising a medication cartridge (11) having an outlet (111) and a movable piston (112), and a housing (12) for holding said cartridge, and a flexible piston rod (13) being operable to engage and displace said piston along an axis (113) of said cartridge, and guiding means (14) for bending said piston rod away from said axis, and actuating means (15), and driving means (16, 17) for transferring movement from said actuating means to said piston rod, said driving means including a driving wheel (17) for displacing the piston rod (13), said flexible piston rod comprising regularly spaced first members (330; 331; 332) adapted to mechanically cooperate with corresponding second members (171) on said driving wheel. The object of the present invention is to provide a medication delivery system that combines compactness with an improved accuracy. The problem is solved in that said flexible piston rod (13) exhibits a linear or approximately linear path between said driving wheel (17) and said piston (112). This has the advantage of yielding a compact, low-weight device with an improved dose accuracy. The invention may e.g. be used in injection or infusion devices for a person's self-treatment of a disease such as diabetes.

A pharmaceutical cartridge piston including a rigid core to resist compression of the piston. The resistance to compression contributes to the piston providing dose accuracy and dynamic recovery advantages.

A dosing system for delivering reductant to an exhaust gas treatment system of an internal combustion engine using air driven hydraulic pumps for closed-loop controlling reductant pressure and a two-stage PWM control method for controlling dosing rate. Reductant residue in the dosing systems is purged by using compressed air after a dosing process completes, and when the air driven hydraulic pumps are positioned inside a reductant tank, dedicated heating means for the pumps is not necessary. The air driven hydraulic pumps can also use low pressure compressed air, and the closed-loop pressure control together with the two-stage PWM control allow dosing accuracy insensitive to pressure variations in compressed air. These new features enable the dosing system use a variety of compressed air sources, including an engine turbo.

The invention relates to: A medication delivery device (1) for delivering a specific dose comprising a medication cartridge (11) having an outlet (111) and a piston (112), and means (12) for holding said cartridge, and a piston rod (13) being operable to engage and displace said piston, and electrically driven actuating means (15), and driving means (161, 162) for transferring movement from said actuating means to said piston rod, and memory means (17) for storing data, and processing means (18) for evaluating said data and for controlling said actuating means. The object of the present invention is to provide a medication delivery system that combines a relatively high dose accuracy with the use of relatively low quality mechanical components and which enables compensation for built-in non-linearities. The problem is solved in that a first set of data (19) describing the actual movement (130) of said piston rod (13) relative to said medication cartridge (11) as a function of the movement (150) of said actuating means (15) is stored in said memory means (17), and the movement (130) of the piston rod (13) governing the delivered dose is controlled by the processing means (18) on the basis of said first set of data (19). This has the advantage of allowing compensation for mechanical inaccuracies and built-in non-linearities linearities. The invention may e.g. be used in injection or infusion devices for a person's self-treatment of a disease such as diabetes.

A dosing system for delivering reductant into an exhaust gas treatment system of an internal combustion engine using an air driven hydraulic pump, which includes a pressure pump tank and a liquid supply tank, for closed-loop controlling reductant pressure, and a three-stage PWM control method for dosing rate control. Reductant residue in the dosing system is purged by using compressed air, and when the air driven hydraulic pumps is positioned inside a reductant tank, heating means in the reductant tank can also be used for heating the air driven hydraulic pump. The closed-loop pressure control together with the three-stage PWM control allow dosing accuracy insensitive to pressure variations in compressed air, thereby a variety of compressed air sources can be used.

The invention discloses a lighting dose real-time controlling apparatus. The apparatus comprises orderly arranged components along an optical axis, which are: a light source, a lighting system, a mask bench, an object lens, and a workpiece bench. A first light energy detector and a second energy spot sensor are respectively arranged in the lighting system and on the workpiece bench. The apparatus is characterized in that: a third light energy detector is arranged in the light path between the first light energy detector and a second light energy spot sensor. The third light energy detector is used for measuring the lighting dose in real time during exposure. With the apparatus provided by the invention, light intensity between the first light energy detector and a second light energy spot sensor can be measured in real time during exposure, such that a yield is not influenced. The third light energy detector is arranged between the first light energy detector and a second light energy spot sensor, such that an influence of varied optics transmissivities between a first and a third light energy detectors is avoided. Therefore, a complicated transmissivity prediction model is not required. An accurate energy measured on a silicon surface can be obtained through simple reforming. Dose controlling can be carried out upon exposure fields according to the measuring results, such that dose accuracy can be improved.

The invention discloses an edaravone A-type crystal and a preparation method thereof. The X-ray diffraction pattern of the crystal is basically shown in the figure 1. According to the crystal and the method thereof, related substance of the product can be effectively reduced, the purity is improved, and the reaction yield is increased. The crystal has strengthened stability, and is suitable for storing particularly in high-temperature high-humidity conditions. The crystal has excellent solubility due to its better chemical property and stable crystal distribution. When medicine is prepared, satisfactory dosage accuracy can be achieved, so as to improve the safety of the product and reduce the patient's risk. Therefore, the crystal provided by the invention is suitable for preparing stable medicinal preparation.

An improved handheld applicator is provided, fitted into an assembly onto a pressure container which is equipped with a gun valve and containing a viscous compound suitable for forming a silicone paste, a polyurethane (PU) foam, or a glue, the applicator being producible in one single injection moulding step and providing in handheld use the ergonomics, the aiming and the dosing accuracy comparable to the use of the pressure container with a dispensing gun. Further provided is a process for the production of the applicator and of the assembly, as well as the use of the assembly for applying a compound from the pressure container with a handheld method.

A process and a device for dosing a pharmaceutical agent, preferably a liquid, are proposed. To achieve an enhanced dosing accuracy, a first component that is produced in batches, such as a shaped seal, is combined with a second component, such as a guide pipe selected from a suitable group guide pipes, wherein the suitable group of second components is selected based on at least one decisively significant value of the respective batch first components and is distinguished by an essential value of the second component which will optimize the sealing between the first and second components.

The invention relates to the technical field of dosing devices of dosing machines, and especially relates to an improved fully-automatic dosing machine. The dosing machine comprises a frame, a container transferring device, a weighing device and a feed transferring device for driving the weighing device to move left and right, the side edge of the frame is provided with a loading and unloading manipulator for transferring a container back and forth between the container transferring device and the weighing device, the frame is provided with a head device and a linear module, the movement loci of the head device and the weighing device are parallel to each other, and the head device and the weighing device are arranged on the frame; and a plurality of constant flow velocity nozzles are arranged in an array manner along the movement locus of the head device, the frame is provided with a plurality of raw material tanks, and the head device and the weighing device synchronously move left and right. The dosing machine has the advantages of less artificial intervention workload, high automatic degree, great reduction of the manpower cost for dosing processing, high dosing efficiency, great increase of the dosing accuracy of the dosing machine through using the automatic constant flow velocity nozzle structure, and improvement of the dosing quality of a mixed product and the qualified rate of the product.

The invention provides a method for controlling the lithography exposure dose and a system. The method for controlling the lithography exposure dose is to make use of the characteristic that the average volatility of multiple pulses is lower than the requirement of exposure precision, to control the lithography exposure dose precision by selecting the number of the exposed laser pulses so as to further decide the decay rate for final exposure. The system using the method of controlling the lithography exposure dose mainly comprises a laser, an attenuator, a controller and an energy sensor; the system has relatively simple structure and can greatly improve the lithography exposure dose accuracy through the combination with the method for controlling the lithography exposure dose.

Method of manufacturing a drug delivery device, comprising the steps of (i) providing a plurality of components which in an assembled state form a processor-controlled drug delivery device, (ii) determining a parameter value for at least one component, (iii) assembling the components to form a drug delivery device, and (iv) storing in the processor memory correction data, the correction data being based on one or more differences between a determined parameter value and a corresponding nominal value.

The invention relates to a system and a method for evaluating a treatment plan for an external radiation therapy treatment, the treatment plan comprising parameters for controlling an external radiation therapy apparatus during the treatment. The system comprises a database storing historic treatment plans and storing for each historic treatment plan a quality parameter indicative of whether a deviation between a planned dose distribution and a measured dose distribution resulting from an execution of the treatment plan is within an acceptable limit. An evaluation unit determines a threshold value for each of a plurality of treatment plan metrics based on the historic treatment plans and the associated quality parameters. Further, the evaluation unit calculates a value of each of the metrics for the treatment plan and compares the value of each of the metrics with the threshold value determined for the respective metric.

The invention relates to medicinal granules for toxin elimination and blood fat reduction. The medicinal granules comprise the following components by weight: 50g of black morning glory, 25g of Chinese honeylocust spine and 15g of gadfly, wherein dose accuracy of the medicinal granules is +/-10 percent of each component. A method for preparing the medicinal granules comprises the step of grinding a certain quantity of the black morning glory, the Chinese honeylocust spine and the gadfly into powder. 16g of the medicinal powder and 20g of white sugar are added into a bowl; boiled water is cooled to the temperature of 30 DEG C; and the boiled water is added into the mixture of the medicinal powder and the sugar and the obtained product can be drunk. The medicinal granules for the toxin elimination and the blood fat reduction not only have the effect of clearing a fatty liver, intestinal inflammation, green bacillus, Esherichia coli and staphylobacillus but also have the effect of reducing blood fat, and have the advantages of radical treatment, extreme obvious effect, and no toxicity and side effects.

The invention discloses a portable ink filling device, which comprises: an ink cartridge, the top of which is provided with an ink filling port, the bottom of which is arranged obliquely, and a deflector is arranged below the ink filling port, and the deflector is disposed obliquely, and the direction of the inclination is the same as that of the ink The upper end of the deflector at the bottom of the cylinder is fixedly connected to the inner wall of the ink cylinder, and the lower end is in contact with the inner wall of the ink cylinder; There is a vent hole, the top of the transfer chamber communicates with the upper end of the bottom of the ink cartridge through the ink outlet pipe, the bottom of the transfer chamber is provided with a connected ink inlet pipe, and the ink inlet pipe communicates with the ink inlet of the ink cartridge through the ink inlet port. The invention has the advantages of high ink injection quality, accurate ink injection dosage, wide application range and the like.