Abstract:
PURPOSE: A channel unit and a mixing channel device using the same are provided, thereby an accurate mixing ratio of fluid can be accomplished in toxic test, biochemical experiments, medical experiments, and etc. CONSTITUTION: The channel unit which mixes fluid using micro mixing channels comprises a plurality of inlet channels; a cross chamber where the inlet channels are connected; at least one micro mixing channel connected to the cross chamber; and at least one outlet channel connected to the micro mixing channel, wherein the inlet channel, the micro mixing channel and the outlet channel regulate the amount, homogeneity and passage time of fluid by change of section area or length of the channel; and the micro mixing channel has zigzag shape. The mixing channel device comprises a plurality of inlet reservoirs; at least one outlet reservoir; and a channel circuit which connects the inlet reservoir and outlet reservoir, wherein the channel circuit contains at least one channel unit.
Abstract:
PURPOSE: A method for producing a mixing channel device and a method for fixing a tube on a panel are provided, therefore the tube can be correctly and stably fixed on a molding plate without damage of the molding plate and other structures. CONSTITUTION: The method for producing the mixing channel device comprises the steps of: (a) preparing the molding plate having embossed shape corresponding to a channel circuit; (b) attaching a magnet in the rear side of the molding plate; (c) positioning a magnetic structure in one side of the tube on the molding plate; (d) molding a first channel element on the molding plate; and (e) separating the magnetic and the molding plate from the first channel element. The method for fixing the tube on the panel comprises the steps of: (a) attaching the magnet in the rear side of the molding plate; (b) positioning the magnetic structure in one side of the tube on the molding plate; (c) molding the panel on the molding plate; and (d) separating the magnetic and the molding plate from the panel.
Abstract:
PURPOSE: An apparatus and a method for 3D focusing a fluid flow and an apparatus and a method for analyzing a fluid sample by using the same are provided to easily adjust a width and a height of the fluid flow. CONSTITUTION: A 3D focusing apparatus(200) includes a focusing channel(210), a first buffer channel(220), a second buffer channel(230), and a sample channel(240). The first buffer channel(220) conveys a first buffer flow to the focusing channel(210). The second buffer channel(230) is disposed adjacent to the first buffer channel(220) so as to convey a second buffer flow to the focusing channel(210). The sample channel(240) is positioned between the first and second buffer channels(220,230) in order to convey a sample fluid flow to the focusing channel(210). The sample channel(240) is arranged in line with the focusing channel(210).
Abstract:
PURPOSE: A method and an apparatus for determining blood types are provided, thereby accurately determining the blood type using a small amount of blood. CONSTITUTION: A method for determining blood types comprises the steps of: inserting reagents into a plurality of reagent storing chambers; introducing blood into each of the reagent storing chambers and mixing them; filtering the mixture of the blood and reagents or reaction products with micro-filters; and passing the filtered mixture or reaction products through reading channels connected to the micro-filters, wherein the reading channels contain reading chambers. An apparatus(300) for determining blood types comprises a blood introducing chamber(320); a plurality of micro-channels connected to the blood introducing chamber; a plurality of reagent storing chambers(330) connected to the micro-channels; a plurality of micro-filters(340) connected to the reagent storing chamber; and a plurality of reading channels(350) connected to the micro-filters.
Abstract:
PURPOSE: A minute channel device for mixing fluid using a minute channel and a mixing method thereof are provided to achieve plural mixtures having a predetermined density ratio by utilizing resistance of fluid, which is varied depending on a size of the minute channel. CONSTITUTION: A minute channel device includes a first storing region(120), a second storing region, a first minute channel structure(140) and a second minute channel structure(160). The first minute channel structure(140) includes a first inlet(150), into which fluid(A) is introduced, a first inlet channel(143) connected to the first inlet(150), a first branch area(180) formed at one end of the first inlet channel(143), first and second branch channels(146,149) branched from the first branch area(180), a first outlet(153) and a second outlet(156). The second minute channel structure(160) includes a second inlet(170), into which fluid(B) is introduced, a second inlet channel(163) connected to the second inlet(170), a second branch area(190) formed at one end of the second inlet channel(163), third and fourth branch channels(166,169) branched from the second branch area(190), a third outlet(173) and a fourth outlet(176).
Abstract:
PURPOSE: A channel unit and a mixing channel device using the same are provided, thereby an accurate mixing ratio of fluid can be accomplished in toxic test, biochemical experiments, medical experiments, and etc. CONSTITUTION: The channel unit which mixes fluid using micro mixing channels comprises a plurality of inlet channels; a cross chamber where the inlet channels are connected; at least one micro mixing channel connected to the cross chamber; and at least one outlet channel connected to the micro mixing channel, wherein the inlet channel, the micro mixing channel and the outlet channel regulate the amount, homogeneity and passage time of fluid by change of section area or length of the channel; and the micro mixing channel has zigzag shape. The mixing channel device comprises a plurality of inlet reservoirs; at least one outlet reservoir; and a channel circuit which connects the inlet reservoir and outlet reservoir, wherein the channel circuit contains at least one channel unit.
Abstract:
PURPOSE: A controlling apparatus of a travel direction adjustment operating device of an endoscope is provided to increase a bending angle of an operating device of the endoscope and give a function for adjusting the travel direction to the operating device. CONSTITUTION: A controlling apparatus of a travel direction adjustment operating device of an endoscope comprises coordinate reading units(60,62), a first and a second non-inverting amplifiers(28,30), a first to a third inverting amplifiers(32,34,36), a first to a seventh summing inverters(38-50), a trigonal wave generator(52), and a first to a third comparators(54,56,58). The non-inverting amplifiers(28,30) multiply an X value from the reading unit(60) with two multipliers, respectively. The inverting amplifiers(32,34,36) invert the multiplied values from the non-inverting amplifiers(28,30) and a Y value from the reading unit(62). The first to the fourth summing inverters(38-44) add the Y value and the outputs of the inverting amplifiers(32,36) and the non-inverting amplifier(28), and output the inverted sums, respectively. The fifth to the seventh summing inverters(46-50) add the outputs of the non-inverting amplifier(30), the first to the fourth summing inverters(38-44), and the inverting amplifier(34), and output the inverted sums, respectively. The comparators(54-58) compare the outputs of the fifth to the seventh summing inverters(46-50) with the output of the trigonal wave generator(52), respectively.
Abstract:
A chip for the analysis of fluid is provided to inhibit the generation of bubbles in a fluid sample by allowing a fluid sample to flow with a uniform pattern, thereby reducing the error of measurement remarkably. A chip for the analysis of fluid comprises a body part; a fluid input hole(130) which is formed at the one terminal part of the body part; a path conversion part(160) which is formed at the other terminal part of the body part; and a path which is formed in the body part to be connected with the fluid input hole and is provided with a first channel(141) of a first depth extending from the fluid input hole to the path conversion part and a second channel(142) of a second depth extending parallel with the first channel, wherein the second depth has the depth(h1) larger than the first depth(h2) from the terminal part of the fluid input hole side to the one point of the downstream of the fluid input hole, and the second depth decreases from the one point of the downstream of the fluid input hole to the path conversion part so as to have the height identical to the first depth at the path conversion part.
Abstract:
A chip for the fluid analysis is provided to prevent the leakage of fluid into the extended part when a sample is flown into a microchannel for the reaction, thereby obtaining the wall-free effect due to extended part. A chip for the fluid analysis comprises an input hole(11) where a sample for analysis is injected; a first reservoir(12) where the injected sample is filled firstly; a second reservoir(13) where the injected sample is filled secondly; a first reaction part(14) where the injected sample reacts with the labelled material; and a second reactive part(15) where the labelled sample reacts by specific reaction such as the antigen-antibody reaction.
Abstract:
A micro-channel chip for counting specific micro-particles among floating mixed micro-particles by an optical method and a method for counting micro-particles by using the same are provided to obtain a clear image without overlapping by setting up a depth of micro-channel to a depth of field in the micro-channel chip. A micro-channel chip for counting specific micro-particles among floating mixed micro-particles by an optical method includes a micro-channel to receive a sample including the micro-particles. The micro-channel chip counts the number of micro-particles in the micro-channel by taking photographs of inner parts of the micro-channel. The depth of the micro-channel is a depth of field to detect subjects clearly, wherein the depth of field is a range of focus.