# US 2021/0239727 A1 · Automatic analyzer

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- Number: US 2021/0239727 A1
- Document ID: US20210239727A1
- Status: Published application
- Kind: A1
- Application number: 17/053,844
- Filed: 2019-03-20
- Published: 2021-08-05
- Earliest claimed: 2018-06-21
- Assignees: Hitachi High-Tech Corporation
- Applicants: Hitachi High-Tech Corporation
- Inventors: Susumu SAKAIRI; Takenori OKUSA; Takahiro KUMAGAI
- Web page: https://patentgrep.com/patent/US20210239727A1

## CPC

- G01N 35/10: Devices for transferring samples {or any liquids} to, in, or from, the analysis apparatus, e.g. suction devices, injection devices {(G01N35/0099 takes precedence)}
- G01N 35/1011: {Control of the position or alignment of the transfer device}
- G01N 35/1002: {Reagent dispensers}
- G01N 2035/0091: {GUI [graphical user interfaces]}
- G01N 2035/103: {using disposable tips}
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)

## Abstract

A countersunk hole is added to a back surface of a dispensing chip mounting position of a sample dispensing chip installation table such that, when the dispensing chip is pulled up from the installation table, the amount of contact of a chip side surface is reduced and the chip is stably mounted. In addition, a posture control member during falling is added to a chip waste position, and the chip is caused to fall vertically and attachment of a sample to a waste route is suppressed. When a dispensing probe moves upward during dispensing chip separation, an upper end of the chip is moved upward up to a position in contact with a base and stopped and then is moved upward again. Thus, the posture of the chip during separation is stable. Further, plural positions for separating the chip are provided such that the position changes depending on waste timing.

## Claims

### Claim at position 1

-6. (canceled)

### Claim 7

An automatic analyzer comprising:
a second member having a tip to which a first member is attached;
a waste box in which the first member is wasted;
a waste table that is disposed above the waste box in a gravity direction and includes a third member having a recessed portion through which the second member passes; and
a controller that performs a control such that the second member is inserted into the recessed portion from a horizontal direction and is moved upward in the gravity direction, wherein
the controller performs a control such that,
after completion of a first process in which the second member is stopped at a first position of the recessed portion and then moved upward in the gravity direction,
when the second member is inserted into the recessed portion from the horizontal direction, the second member is stopped at a second position of the recessed portion different from the first position and then is moved upward in the gravity direction.

### Claim 8 (depends on 7)

The automatic analyzer according to claim 7, wherein
the recessed portion of the third member has a first portion and a second portion adjacent to each other, the first portion having a wide hole and a small thickness, and the second portion having a narrower hole and a larger thickness than the first portion.

### Claim 9 (depends on 8)

The automatic analyzer according to claim 8, wherein
the first position and the second position of the recessed portion are positioned in the second portion.

### Claim 10 (depends on 9)

The automatic analyzer according to claim 9, wherein
an N-th position including the first position and the second position is provided in the second portion, and
the controller performs a control such that the second member is sequentially stopped from the first member to the N-th position and then is moved upward in the gravity direction.

### Claim 11 (depends on 7)

The automatic analyzer according to claim 7, further comprising
an installation table having a hole through which the first member passes, wherein
the hole includes a first cylindrical position and a second cylindrical position, the first cylindrical position being provided on an upper side in a gravity direction, and the second cylindrical position being disposed to be connected to a lower side of the first cylindrical position in the gravity direction and having a larger diameter than the first cylindrical position, and
the controller performs a control such that the first member is mounted on the second member by pressing the second member against the first member that passes through the hole.