Abstract:
PROBLEM TO BE SOLVED: To facilitate the suppression and removal of air bubbles, and to raise the reliability related to the measurement of a cell electrophysiology sensor. SOLUTION: The cell electrophysiology sensor includes a diaphragm 2 having at least one through hole 1, and a frame 3 that supports this diaphragm 2 and has a cavity 4. Since the shape of an end 5 of the frame 3 is made to have different heights, and the occurrence of air bubbles can be suppressed and the removal of the remaining air bubbles is facilitated. Therefore, the reliability in the measurement by the cell electrophysiology sensor can be raised. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To solve the problem that, as conventionally a micropipette is attached to an electrode holder with a screw and an O ring to ensure airtightness, such a method makes the work complicated and reduces the measurement efficiency. SOLUTION: The microprobe includes: a micropipette 10; a socket 7 having a first opening part 8 and a second opening part 9; a measuring electrode 4; a sleeve 2; and a connection member 3 provided with a pressure connection port 5, wherein, the back end of the micropipette 10 is inserted into the first opening part 8 of the socket 7, and the sleeve 2 is inserted into the second opening part 9 of this socket 7. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a sensor chip for securely adsorbing or trapping a spherical substance, such as a particle or a cell, and also to provide a sensor device using the same. SOLUTION: The sensor chip is equipped with a sheet and a frame body to support the periphery of the sheet, in which the sheet has at least a through-hole to penetrate a first surface and a second surface facing the first surface and a recess continuously provided from the through-hole has a diameter greater than the bore diameter of the through-hole and a narrow-down portion on the first surface side. The structure provides a sensor chip improving the adhesiveness between the spherical substance, such as an particle and a cell, and the recess. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a sensor enhanced in sensitivity. SOLUTION: The sensor includes a base material 5, the vapor deposition layer 6 comprising a plurality of the particles 8 accumulated on the base material 5 in a branched state to be integrally bonded to each other and a plurality of the functional molecules 7 joined to the surfaces of the particles 8 of the vapor deposition layer 6, and the surfaces of the respective particles 8 contains aluminum oxide as the main component. By this constitution, the surface area of the base material 5 is magnified and the functional molecules 7 can be fixed in high density. As a result, the sensitivity of the sensor is enhanced. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To aim at manufacturing of a cellular electrophysiological sensor with high measurement precision. SOLUTION: In order to achieve the purpose, following processes are included in the present invention: the process of holding sensor chips 14; the process of holding glass tubes 13 enclosing the outer circumference of the lateral surface of the sensor chips 14; and the process of melting the glass tubes 13 to glass-deposit with the lateral surface of the sensor chip 14, while giving wind pressure towards the lateral surface of the glass tube 13 from outside of the glass tube 13. Thereby, the present invention allows to encircle the outer circumference of the sensor chips 14 with the glass tube 13 of high hydrophilicity, resulted in possible manufacturing of cellular electrophysiological sensor with high measurement precision. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To improve the measuring precision of a cellular electrophysiological sensor. SOLUTION: This device for the cellular electrophysiological sensor is equipped with a holding plate 11, a storage vessel 12 installed above the holding plate 11, a flow passage 13 installed below the holding plate 11, a tubular chip-holding part 15 inserted into the perforation 14 of the holding plate 11 and a sensor chip 16 inserted into the lower end of the chip-holding part 15, and the sensor chip 16 has a cell-holding plate 17 formed with a conductive hole 20. The lower surface 17A of the cell-holding plate is positioned below the lower surface 11A of the holding plate. Thereby, the sensor can flow bubbles off by the flow of liquid even if the bubbles attach in the vicinity of the conductive hole 20 on the side of the flow passage 13, and as a result, the measuring precision of the cellular electrophysiological sensor is improved. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a dispensing apparatus capable of dispensing prescribed liquid and solid components while extracting/moving the solid component into other liquid in approximate synchronism with its dispensing operation. SOLUTION: The dispensing apparatus is composed of a component separating section and a pipette section 11. The component separating section includes an introducing channel 7 for introducing a first solution 6 containing solid particles 4, a flow channel 2 for introducing a second solution 9, concentration gradient generating means 3 for generating a concentration gradient of the solid particles 4 in the middle portion of the flow channel 2, and a lead-out channel 8 for leading out the first solution 6. The pipette section 11 is disposed so as to communicate with an end of the flow channel 2 from which the second solution 9 containing separated solid particles 4 moved from the first solution 6 into the second solution 9 by the concentration gradient generating means 3 is discharged. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To improve the measuring accuracy of a cell electrophysiological sensor. SOLUTION: A device for the cell electrophysiological sensor is equipped with a cell-holing chip 11 and a substrate 9 for covering the sides of the cell-holding chip 11 so as to attain the objectives. Furthermore, the cell-holing chip 11 is provided with a conducting hole 14 connecting the upper and the lower surfaces thereof. The cell-holding chip 11 comprises silicon as the principal component. The substrate 9 is formed of glass and a hydrophilic film 16, composed of at least either silicon oxide or silicon nitride, is formed on each side of the cell-holing chip 11. The substrate 9 is heat-fused to the hydrophilic film 16. Thus, gaps between the sides of the cell-holding chip 11 and the substrate 9 can be reduced to raise airtightness and as a result, improve the measurement accuracy of the cell electrophysiological sensor. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for accurately determining the quantity of a chemical substance contained in a sample solution with an extremely low concentration of 1×10M or less.SOLUTION: There is provided a measurement system which includes a counter electrode 13, a first reference electrode 12, a first working electrode 11a, a second working electrode 11b, and a second reference electrode 14. Subsequently, a voltage (V1>V2) of V1 volt and V2 volt respectively is applied to the first working electrode 11a and the second working electrode 11b for a first predetermined period t1. When a first predetermined period t1 has elapsed, the application of the voltage to the second working electrode 11b is stopped. A sample solution 15 is left for a second predetermined period t2. Finally, a voltage difference ΔE between the second working electrode 11b and the second reference electrode 14 is measured and the concentration of the chemical substance is calculated based on the ΔE.
Abstract:
PROBLEM TO BE SOLVED: To quickly and highly accurately quantify a chemical substance in a sample solution without being affected by an adsorptive inhibitor contained in the sample solution.SOLUTION: A sensor chip for quantifying a chemical substance contained in a sample solution comprises a metal electrode formed on a part or the whole surface of a solid support body. The surface of the metal electrode is covered with a self-assembly of alkyl thiol compound. The carbon number of alkyl part is 6 to 16, and the terminal group of the alkyl thiol compound includes ethylene glycol. The sample solution includes an electron carrier, and the electron carrier is 1-methoxy-5-methylphenazinium.