ARKRAY, Inc.

An analysis device is disclosed. The device includes a device main body, a holding member that holds a specimen container movably between an approach position, which is close to the device main body, and a separation position, which is horizontally separated from the device main body, and a nozzle that is supported at a front side of the device main body to be movable between a collection position, where the nozzle enters the specimen container at the approach position from above to collect a specimen inside the specimen container, and a retraction position, where the nozzle retracts above the specimen container. The device also includes a cover that covers the nozzle, at the retraction position, at the front side, and a support member that is provided at the holding member to be positionally adjustable in a vertical direction and that supports the specimen container.

A particle recovery device for recovering particles contained in a liquid sample, the particle recovery device comprising: a flow cell having a flow path through which the liquid sample flows; standing wave generating means that applies, in the flow path, an ultrasonic wave that sweeps between a second frequency that is a frequency lower than a first frequency that is a frequency of the ultrasonic wave that generates a standing wave having a predetermined number of nodes in the flow path and a third frequency that is a frequency higher than the first frequency; and recovery means that recovers the particles focused in the flow path by the standing wave generated by the standing wave generating means.

A method of producing a sample collection apparatus, including steps of: attaching a holding member to a support of a nozzle unit such that, in slits provided with N edges (N≥3), a collection range w of a sample tube is included within a range from a lower-limit position at a distance w/2 from a 1st edge toward an initial-position, to an upper-limit position at a distance w/2 from an Nth edge away from the initial position; loading the sample tube on the holding member; counting the number of pulses with which a pulse motor is driven to move a nozzle to the center of the collection range; identifying the signal corresponding to the last edge recognized by a photo-interrupter before the nozzle reaches the center of the collection range; and storing the number of pulses and the signal corresponding to the last edge in a storage device.

An electrophoresis unit including: a capillary flow path (CFP) through which a sample solution (SS) moves when the CFP is filled with a running solution (RS); a pair of electrodes installed near both ends of the CFP; a detector provided at an intermediate part of the CFP; a first flow path (FFP) and a second flow path (SFP) communicating with the both sides of the CFP, respectively; a first supply source (FSS) supplying the SS to the FFP; a second supply source (SSS) supplying the RS to the SFP; a pump moving the RS from the SSS to the SFP and moving the SS from the FSS to the FFP; a first auxiliary supply source supplying insulating fluid to the FFP; a second auxiliary supply source supplying insulating fluid to the SFP; and a switch switching a fluid path of fluid supplied to the FFP and the SFP.

An electrophoresis unit, having: a first flow path including a first liquid reservoir, a first inflow path at which a solution flows into the first liquid reservoir, a first outflow path at which the solution flows out from the first liquid reservoir, and a first liquid level adjustment section open to an exterior; a second flow path including a second liquid reservoir, a second inflow path at which the solution flows into the second liquid reservoir, a second outflow path at which the solution flows out from the second liquid reservoir, and a second liquid level adjustment section open to the exterior; a capillary that leads from the first liquid reservoir to the second liquid reservoir; and an electrode arranged at respective interiors of the first and the second flow paths. Vertical direction positions of the first and the second liquid level adjustment sections are equal to each other.

A particle recovery device for recovering particles contained in a liquid sample, the particle recovery device comprising: a flow cell having a flow path through which the liquid sample flows; a density acquisition unit that acquires a density of the liquid sample; standing wave forming means that applies an ultrasonic wave into the flow path to generate a standing wave; a control unit that determines a frequency of the ultrasonic wave that generates the standing wave in the flow path based on the density acquired by the density acquisition unit and causes the standing wave forming means to apply the ultrasonic wave of the determined frequency; and recovery means that recovers particles focused in the flow path by the standing wave.

There is provided a method of feeding a sample liquid to a flow cell having a merging path in which a sample liquid and a sheath liquid flow, at least one sheath liquid flow path that introduces the sheath liquid into the merging path along a flowing direction of fluid in the merging path, and a sample flow path introducing the sample liquid into the merging path at an angle orthogonal to the flowing direction, wherein, given that an opening surface area of a sheath liquid introducing opening of the sheath liquid flow path onto the merging path is S1, an opening surface area of a sample liquid introducing opening of the sample flow path onto the merging path is S2, a flow rate per unit time of the sheath liquid supplied to the sheath liquid flow path is L, and a flow rate per unit time of the sample liquid supplied to the sample flow path is J, a relationship (L/S1)/(J/S2)≥0.7 is satisfied.

A method of producing a sample collection apparatus, including steps of: attaching a holding member to a support of a nozzle unit such that, in slits provided with N edges (N≥3), a collection range w of a sample tube is included within a range from a lower-limit position at a distance w/2 from a 1st edge toward an initial-position, to an upper-limit position at a distance w/2 from an Nth edge away from the initial position; loading the sample tube on the holding member; counting the number of pulses with which a pulse motor is driven to move a nozzle to the center of the collection range; identifying the signal corresponding to the last edge recognized by a photo-interrupter before the nozzle reaches the center of the collection range; and storing the number of pulses and the signal corresponding to the last edge in a storage device.

A particle recovery device for recovering particles contained in a liquid sample, the particle recovery device comprising: a flow cell having a flow path through which the liquid sample flows; standing wave generating means that applies, in the flow path, an ultrasonic wave that sweeps between a second frequency that is a frequency lower than a first frequency that is a frequency of the ultrasonic wave that generates a standing wave having a predetermined number of nodes in the flow path and a third frequency that is a frequency higher than the first frequency; and recovery means that recovers the particles focused in the flow path by the standing wave generated by the standing wave generating means.

A particle recovery device for recovering particles contained in a liquid sample, the particle recovery device comprising: a flow cell having a flow path through which the liquid sample flows; a density acquisition unit that acquires a density of the liquid sample; standing wave forming means that applies an ultrasonic wave into the flow path to generate a standing wave; a control unit that determines a frequency of the ultrasonic wave that generates the standing wave in the flow path based on the density acquired by the density acquisition unit and causes the standing wave forming means to apply the ultrasonic wave of the determined frequency; and recovery means that recovers particles focused in the flow path by the standing wave.