Abstract: There is provided a wet etching method including an etchant supply step of supplying an etchant from an etchant supply nozzle to a to-be-etched surface of a workpiece, an etching step of etching the to-be-etched surface with the etchant remaining on the to-be-etched surface, and an etchant removal step of, after performing the etching step, removing the etchant, which still remains on the resulting etched surface, from the etched surface. The etchant supply step, the etching step, and the etchant removal step are repeated a plurality of times in this order.

Abstract: A blood pressure measurement device includes: a case including; a strap; a plurality of valves; a pump; and a power supply unit. The pump and the power supply unit are disposed with a gap therebetween. The pump is provided with a suction hole on a surface thereof opposite to the power supply unit. The device comprises a hole portion formed between each of a pairs of lugs of an outer case, an opening end being located at a position opposed to the gap in a first direction. The hole portion extends linearly, and one opening end of the hold portion is provided on the outer surface of the outer case closer to a wrist, and other opening end thereof is provided on the inner surface of the outer case closer to a windshield than the one opening end.

Abstract: Provided is a blood pressure measurement device capable of discharging a fluid from three cuffs even when either one of a pump valve or an on-off valve fails, that includes a pump including a pump valve; a first flow path including a first on-off valve and fluidly connecting the pump and a sensing cuff; a second flow path branching from the first flow path between the pump and the first on-off valve, including a second on-off valve, a third on-off valve, and a fourth on-off valve, and connecting the pump and atmosphere; a third flow path branching from an intermediate portion between the second on-off valve and the third on-off valve and fluidly connecting the pump and the tensile cuff; and a fourth flow path branching from an intermediate portion between the third on-off valve and the fourth on-off valve and fluidly connecting the pump and the pressing cuff.

Abstract: A blood pressure measurement device includes a curler and a main body. The curler curves following a circumferential direction of a wrist from a hand back side of the wrist to a region where at least an artery is present on a hand palm side of the wrist through a first lateral side of the wrist. The curler includes a cover portion formed on the hand back side of the wrist and a member inserted into the cover portion. The device main body includes an outer case and a back cover. The outer case internally includes a pump and a flow path unit that supplies a fluid from the pump to a secondary side. The back cover is fixed to a first end portion of the outer case and the cover portion.

Abstract: A blood pressure measurement device attachable to the wrist includes a curler that curves along a circumferential direction of the wrist from a backhand side of the wrist along one side of the wrist to a region on a palm-side of the wrist where at least an artery resides, a device body provided on the curler on the backhand-side of the wrist, a sensing cuff provided on the curler on the palm-side of the wrist and covers the region where the artery of the wrist resides, a belt configured to cover the curler including a first belt provided on a first side of the device body, a second belt provided on a second side of the device body, and a connector to connect the first belt and the second belt, and a mark portion provided on the belt being configured to guide to a position of the sensing cuff.

Abstract: A blood pressure measurement device includes a device main body, a curler, and a sensing cuff. The curler curves following a circumferential direction of a wrist from a hand back side of the wrist to a region where at least an artery is present on a hand palm side of the wrist. The curler includes a cover portion that fixes the device main body to the hand back side of the wrist. The curler has a curvature of an end portion on a short-hand side from the cover portion set smaller than a curvature of an end portion on a long-hand side from the device main body. The end portion on the short-hand side is separated from the end portion on the long-hand side. The sensing cuff is provided on the long-hand side of the curler and an inner circumferential surface on the hand palm side of the wrist.

Abstract: A connector capable of maintaining a state of being connected to a power feeding unit is provided. A blood pressure measurement device charging connector includes a main body including: a first member, a second member facing the first member, the second member including a protrusion including an end surface that makes contact with an inner peripheral surface of a pulling cuff provided on an inner peripheral surface of a curler mounted on the blood pressure measurement device, a rotational shaft configured to rotatably couple the first member and the second member, and a biasing member configured to bias the first member and the second member in an approaching direction; and a connection terminal connected to a power feeding terminal provided in the curler, the connection terminal being provided on the second member side in the first member.

Abstract: Provided is a blood pressure measurement device including a curler including a cover portion that fixes a device body to a hand back side of the wrist, a pressing cuff including a first bag-like structure and a first flow path body which is integrally formed with the first bag-like structure by joining two sheet members forming the first bag-like structure facing the curler and is fluidly connecting a pump and the first bag-like structure, a sensing cuff including a second bag-like structure and a second flow path body which is integrally formed with the second bag-like structure by joining two sheet members forming the second bag-like structure and is including one end disposed on the wrist side of the cover portion, and a tensile cuff including a third bag-like structure.

Abstract: A blood pressure measurement device includes a curler, a cuff structure on an inner surface of the curler, a case including a tubular shaped outer case and a rear cover fixed to an end portion on a living body side of the outer case and the curler, a portion of the rear cover facing the curler being open, and the rear cover and curler covering the end portion on the living body side of the outer case, a base portion housed in the case, a first sealing member between the rear cover and the curler, that is configured to seal between the rear cover and the curler, and a second sealing member having a higher sealing property than the first sealing member, between an inner circumferential surface of the outer case and the base portion, that is configured to seal between the inner circumferential surface and the base portion.

Abstract: A blood pressure measurement device includes a curler that curves to follow a circumferential direction of a site of a living body where the curler is attached, and a cuff. The cuff includes a plurality of bag-like structures layered on one another, each of the plurality of bag-like structures being elongated in one direction, formed by welding two sheet members formed of a resin material, and configured to be inflated with a fluid, and a joined portion provided on at least a portion of an edge portion of the bag-like structure disposed facing the curler, the joined portion being formed by a portion of the sheet members constituting the bag-like structure disposed facing the curler and joined to an outer circumferential surface side of the curler.

Abstract: Provided is a technology capable of protecting a charge/discharge control circuit and a battery device from a reverse connection state without a separately provided protection circuit. The charge/discharge control circuit to be contained in a battery device including a secondary cell, an external positive terminal and an external negative terminal, and FETs which control charging and discharging of the secondary cell, respectively, includes: VDD and VSS terminals; a charge control terminal; a discharge control terminal; a voltage detection terminal to which a voltage applied to the external positive terminal is supplied; an NMOS transistor communicates the discharge control terminal and the voltage detection terminal; and a bipolar transistor having a collector to be connected to a drain of the NMOS transistor, an emitter to be connected to a source of the NMOS transistor, and a base to be connected to a bulk of the NMOS transistor and the VSS terminal.

Abstract: To provide a walking mode display method, a walking mode display system and a walking mode analyzer each of which allows for analysis of a walking mode of a user and display thereof in an easily understandable manner. The walking mode display method includes: selecting measurement of a walker and measurement of a reference walker to be compared with the walker; displaying a first walking model that displays a walking for one walking step of the walker as an animation; displaying a second walking model that displays a walking for one walking step of the reference walker as the animation; and displaying a magnitude of predetermined feature amount data related to the measurement of the walker and the magnitude of predetermined feature amount data related to the measurement of the reference walker in a comparable manner.

Abstract: A blood pressure measurement device enabling an increase in joining strength between a cuff and a junction target preventing an increase in size of the blood pressure measurement device. The device includes a case including an outer case having a tubular shape, a curler curving in such a manner as to follow along a circumferential direction of a portion of the wrist where the blood pressure measurement device is attached, the curler including a first facing portion aligned at one end of the outer case in a thickness direction, and a back-side cuff formed of two sheets formed of a resin material, the back-side cuff being configured to be inflated with a fluid, one of the sheet members that is disposed on the curler side including a second facing portion facing the first facing portion, and the second facing portion being larger than other portions of the back-side cuff.

Abstract: A belt providing improved durability and a blood pressure measurement device. A second belt of a belt of a blood pressure measurement device includes a second belt body constituted in a band-like shape using a resin material and including a plurality of small holes formed along a longitudinal direction, and a second insert being disposed in the second belt body and including a plurality of holes with a plurality of the small holes disposed on an inner side of the respective holes, a cross section of a portion of the second insert, which is between two adjacent holes and orthogonal to a width direction of the second belt body, being constituted like a trapezoid with a short side being disposed on a living body side, and the second insert being formed of a material having a higher tensile strength than the resin material constituting the second belt body.

Abstract: A blood pressure measurement device includes a cuff structure formed of a resin material and configured to be inflated with a fluid, and a curler curved in such a manner as to follow along a circumferential direction of a portion of a living body where the blood pressure measurement device is attached, the curler being formed with a first end and a second end spaced apart from each other, the cuff structure being welded to the curler, and a portion of the curler where the cuff structure is welded being formed of a material similar to the resin material forming the cuff structure.

Abstract: A variable resistance non-volatile memory device includes a memory cell array including memory cells, a write circuit, and a control circuit. Each memory cell includes a memory element that is a non-volatile and variable-resistance memory element, and a cell transistor. The write circuit includes a source line driver circuit connected to the cell transistor and a bit line driver circuit connected to the memory element. When performing a write operation of changing the memory element to a low resistance state, the control circuit performs control for allowing current having a first current value to flow through the memory element, and subsequently performs control for allowing current having a second current value to flow through the memory element. The second current value is greater than the largest value of overshoot current flowing through the memory element after the start of the changing of the memory element to the low resistance state.

Abstract: A thermoacoustic device includes a waveguide with a loop shape, a heat exchanger, and a thermally conductive member. The waveguide with a loop shape is filled with a medium. The heat exchanger is provided in the waveguide and has a lower temperature part and a higher temperature part that produce a temperature gradient therebetween. The thermally conductive member changes a temperature of a central part of at least one of the lower temperature part and the higher temperature part.

Abstract: A semiconductor module includes a ground substrate that is provided with a drive circuit, and a plurality of light emitting elements that are electrically coupled to the drive circuit, in which a distance between the light emitting elements adjacent to each other is equal to or less than 20 ?m in a top view.

Abstract: A laser device includes a substrate including a principal surface and a recess provided in the principal surface; a laser oscillation unit fixed to the principal surface in direct contact with the principal surface or with an adhesive interposed between the laser oscillation unit and the principal surface, the laser oscillation unit having an emission surface from which laser light that diverges as the laser light travels is emitted along the principal surface; and a reflecting member fixed to a bottom surface of the recess and having an inclined surface that is inclined with respect to the principal surface so as to reflect the laser light. At least a portion of the inclined surface is positioned in a space inside the recess.

Abstract: A variable resistance non-volatile memory device includes a memory cell array including memory cells, a write circuit, and a control circuit. Each memory cell includes a memory element that is a non-volatile and variable-resistance memory element, and a cell transistor. The write circuit includes a source line driver circuit connected to the cell transistor and a bit line driver circuit connected to the memory element. When performing a write operation of changing the memory element to a low resistance state, the control circuit performs control for allowing current having a first current value to flow through the memory element, and subsequently performs control for allowing current having a second current value to flow through the memory element. The second current value is greater than the largest value of overshoot current flowing through the memory element after the start of the changing of the memory element to the low resistance state.