JP2022038093A - Electrophoresis device group - Google Patents

Abstract

To provide an electrophoresis device group capable of preventing erroneous assembly of a sample unit to a device body.SOLUTION: In an electrophoresis device group, each electrophoresis device 10 has a device body 100 and a sample unit 200. A rack side detachable member held in one rack side holding part interferes with a body side detachable member 130 held by one body side holding part and does not interfere with the body side detachable member 130 held by another body side holding part when the sample unit 200 is housed in a unit housing mechanism 120. A rack side detachable member held by another rack side holding part does not interfere with the body side detachable member 130 held by one body side holding part and interferes with the body side detachable member 130 held by another body side holding part when the sample unit 200 is housed in the unit housing mechanism 120.SELECTED DRAWING: Figure 2

Description

The present invention relates to an electrophoresis apparatus.

For example, Japanese Patent Application Laid-Open No. 2018-4557 describes an electrophoresis apparatus including a well plate, a dispensing probe, and a chip holder. The well plate has a plurality of accommodating portions, and each accommodating portion contains a sample (DNA, protein, etc.). The well plate is supported by a rack installed on the base surface. The dispensing probe is used for suctioning, dispensing, etc. of the sample contained in the well plate. The chip holder is installed on the base surface. The chip holder holds a microchip having a separation channel for separating the sample by electrophoresis.

Japanese Unexamined Patent Publication No. 2018-4557

In an electrophoresis apparatus as described in JP-A-2018-4557, there is a need to shorten the time required between each analysis. For example, in the electrophoresis apparatus described in JP-A-2018-4557, when the rack supporting the well plate (hereinafter referred to as “sample plate”) cannot be removed, the flow path of the microchip or the like may be used. Since the sample plate cannot be replaced during cleaning, the time required for the next analysis becomes long.

Therefore, it is conceivable to detachably configure a unit including a sample plate and a rack that supports the sample plate with respect to the main body of the apparatus. However, in such a configuration, when a plurality of electrophoresis devices are arranged side by side and the unit is taken out from each device body, the unit is erroneously placed in a device body different from the device body corresponding to the unit. May be installed. In that case, poor analysis of the sample or the like occurs.

An object of the present invention is to provide a group of electrophoresis devices capable of preventing erroneous assembly of a sample unit with respect to a device body.

The first aspect of the present invention is a group of electrophoresis devices including a plurality of electrophoresis devices, and each of the electrophoresis devices of the plurality of electrophoresis devices holds an apparatus main body capable of analyzing a sample and the sample. The sample unit includes a sample unit that is possible and can be attached to and detached from the main body of the apparatus, and the sample unit includes a sample plate having an accommodating portion for accommodating the sample, a rack that supports the sample plate, and the rack. It has at least one rack-side detachable member that can be attached to and detached from the unit, and the apparatus main body has a unit accommodating mechanism for accommodating the sample unit and at least one main body side that can be attached and detached to the unit accommodating mechanism. The rack has a plurality of rack-side holding portions capable of holding the at least one rack-side detachable member, and the unit accommodating mechanism holds the at least one main body-side detachable member. The rack-side detachable member having a plurality of possible main body-side holding portions and being held by one of the plurality of rack-side holding portions on the rack-side holding portion is used when the sample unit is accommodated in the unit accommodating mechanism. In addition, the main body side holding portion of the plurality of main body side holding portions interferes with the main body side detachable member held by the main body side holding portion, and the one main body side holding portion of the plurality of main body side holding portions is The rack side held by a rack side holding portion different from the one rack side holding portion among the plurality of rack side holding portions without interfering with the main body side detachable member held by another main body side holding portion. When the sample unit is housed in the unit accommodating mechanism, the detachable member does not interfere with the main body side detachable member held by the one main body side holding portion among the plurality of main body side holding portions, and The present invention relates to a group of electrophoresis devices that interfere with the main body side attachment / detachment member held by the other main body side holding portion among the plurality of main body side holding portions.

In this group of electrophoresis devices, in one electrophoresis device, the rack-side attachment / detachment member is held by one of the plurality of rack-side holding portions on the rack-side holding portion, and one of the plurality of main-body-side holding portions is held on the main body side. The main body side attachment / detachment member is held by a main body side holding part separate from the part, and in another electrophoresis device, the rack side attachment / detachment is performed to a rack side holding part different from the rack side holding part of one of the plurality of rack side holding parts. By holding the member and holding the main body side attachment / detachment member in one of the main body side holding parts among the plurality of main body side holding parts, the sample unit of one electrophoresis device becomes the unit accommodating mechanism of the other electrophoresis device. When housed, or when the sample unit of another electrophoresis device is housed in the unit housing mechanism of one electrophoresis device, the rack-side attachment / detachment member interferes with the main body-side attachment / detachment member. Therefore, it is possible to prevent the sample unit from being erroneously assembled to the main body of the device.

It is a perspective view of the group of electrophoresis apparatus of one Embodiment of this invention. It is sectional drawing of the electrophoretic apparatus. It is a perspective view of the sack accommodating mechanism of the electrophoresis apparatus shown in FIG. It is an exploded perspective view of a sample unit. It is a perspective view at an angle which looked up from the bottom of a sample unit. It is a perspective view which shows the positional relationship between the body side attachment / detachment member and the rack side attachment / detachment member. It is a figure which shows the example of the arrangement pattern of the main body side attachment / detachment member and the rack side attachment / detachment member in three electrophoresis apparatus. It is a figure which shows the example of the arrangement pattern of the main body side attachment / detachment member and the rack side attachment / detachment member in five electrophoretic devices.

An embodiment of the present invention will be described with reference to the drawings. In the drawings referred to below, the same or corresponding members are assigned the same number.

FIG. 1 is a perspective view of a group of electrophoresis devices according to an embodiment of the present invention. As shown in FIG. 1, the electrophoresis apparatus group 1 is composed of a plurality of (three in this embodiment) electrophoresis apparatus 10.

FIG. 2 is a cross-sectional perspective view of the electrophoresis apparatus. Each electrophoresis apparatus 10 includes an apparatus main body 100 and a sample unit 200.

The device body 100 can analyze samples (DNA, RNA, protein, etc.). As shown in FIG. 2, the apparatus main body 100 includes at least one housing 110, a dispensing probe unit 111, a chip holding unit 112, a voltage applying unit 113, a control unit 114, and a unit accommodating mechanism 120. It has two main body side attachment / detachment members 130. In FIG. 2, the dispensing probe unit 111, the tip holding unit 112, the voltage applying unit 113, and the control unit 114 are simplified. Further, the arrangement of the dispensing probe unit 111, the chip holding unit 112, the voltage applying unit 113, and the control unit 114 shown in FIG. 2 is not strict.

The housing 110 houses a dispensing probe unit 111, a chip holding unit 112, a voltage applying unit 113, a control unit 114, a unit accommodating mechanism 120, at least one main body side detachable member 130, and the like. As shown in FIG. 2, an insertion port 110h for inserting the sample unit 200 is provided on the front surface of the housing 110.

The dispensing probe unit 111 sucks and dispenses the sample, supplies the cleaning liquid, and the like. The dispensing probe unit 111 has a dispensing probe (not shown), a punch pin (not shown), and the like.

The chip holding portion 112 holds the microchip C. The chip holding portion 112 is fixed in the housing 110. The microchip C has a separation flow path f for separating samples by electrophoresis.

The voltage application unit 113 applies a voltage to the microchip C. As a result, the sample is separated into the separation flow path f.

The control unit 114 controls the dispensing probe unit 111, the voltage application unit 113, and the like. The control unit 114 is realized by, for example, a so-called microcomputer equipped with a CPU (central processing unit), a storage device, and the like. The control unit 114 is connected to a computer provided outside the electrophoresis device 10.

The unit accommodating mechanism 120 accommodates the sample unit 200. The unit accommodating mechanism 120 communicates with the outside of the housing 110 through the insertion port 110h. As shown in FIG. 3, the unit accommodating mechanism 120 includes a bottom plate 122, a main body side holding member 124, and a guide rail 126.

The bottom plate 122 has a shape extending along an insertion direction (direction indicated by an arrow in FIG. 2) into which the sample unit 200 is inserted into the housing 110 through the insertion port 110h. The bottom plate 122 is formed in a flat plate shape.

The main body side holding member 124 is fixed to the bottom plate 122. The main body side holding member 124 is fixed to a portion of the bottom plate 122 near the insertion port 110h. The main body side holding member 124 has a plurality of (three in this embodiment) main body side holding portions 124h. Each main body side holding portion 124h can hold the main body side detachable member 130. As shown in FIGS. 3 and 6, in the present embodiment, the main body side holding portion 124h is composed of a through hole. The plurality of main body side holding portions 124h are arranged so as to be arranged at equal intervals in a direction orthogonal to both the thickness direction of the bottom plate 122 and the insertion direction.

The main body side holding member 124 has a flange 124a connected to the bottom plate 122, and a base portion 124b formed at a position upwardly separated from the bottom plate 122. Each main body side holding portion 124h is provided on the base portion 124b.

The guide rail 126 guides the insertion of the sample unit 200 into the housing 110 through the insertion port 110h. The guide rail 126 has a shape extending along the insertion direction so as to guide the guided portion 222d described later. The guide rail 126 regulates the sample unit 200 from separating upward from the bottom plate 122. The guide rail 126 has a shape that sandwiches the guided portion 222d from both sides in the vertical direction.

The main body side detachable member 130 is detachable with respect to the unit accommodating mechanism 120. Specifically, the main body side detachable member 130 is detachably connected to each main body side holding portion 124h of the main body side holding member 124. In the present embodiment, the main body side detachable member 130 is composed of a member having a male screw.

The sample unit 200 is a unit that can hold a sample and can be attached to and detached from the apparatus main body 100. As shown in FIGS. 4 and 5, the sample unit 200 includes a sample plate 210, a rack 220, and at least one rack-side detachable member 230. In the present embodiment, at least one rack-side detachable member 230 has two rack-side detachable members 230.

The sample plate 210 has a plurality of (96 in this embodiment) accommodating portions 212. Each accommodating section 212 accommodates a sample to be analyzed. The sample plate 210 has a point-symmetrical shape in a plan view. A protective sheet (not shown) covering each accommodating portion 212 is attached to the surface of the sample plate 210, and a cover (not shown) is placed on the protective sheet. In FIG. 2, the sample plate 210 is not shown.

The rack 220 supports the sample plate 210. The rack 220 has a rack main body 222, a rack-side holding member 224, and a handle 229.

The rack body 222 can support the sample plate 210 and can be accommodated in the unit accommodating mechanism 120. As shown in FIGS. 5 and 6, the rack body 222 has a bottom wall 222a, a pair of side walls 222b, a plate support portion 222c, and a pair of guided portions 222d.

The bottom wall 222a constitutes the bottom of the rack body 222. The bottom wall 222a faces the bottom plate 122 in a state where the rack 220 is housed in the unit housing mechanism 120. As shown in FIGS. 5 and 6, the bottom wall 222a is formed with an insertion hole 222h through which the rack-side detachable member 230 is inserted.

Each side wall 222b faces each other in an orthogonal direction orthogonal to both the insertion direction and the thickness direction of the bottom wall 222a. Each side wall 222b has a long shape in the insertion direction. Each side wall 222b is formed in a flat plate shape.

The plate support portion 222c supports the sample plate 210. The plate support 222c is fixed on the bottom wall 222a and between the pair of side walls 222b. The plate support portion 222c is provided with an opening h for inserting each accommodating portion 212.

The guided portion 222d is a portion guided by the guide rail 126. The guided portion 222d is connected to the lower end portion of each side wall 222b. The guided portion 222d has a shape that protrudes inward in the orthogonal direction from the lower end portion of each side wall 222b and extends along the insertion direction.

The rack-side holding member 224 is fixed to the bottom wall 222a. As shown in FIG. 6, the rack-side holding member 224 is fixed to the upper surface of the bottom wall 222a. The rack-side holding member 224 is fixed to a portion of the bottom wall 222a near the tip in the insertion direction. The rack-side holding member 224 has a plurality of rack-side holding portions 224h (four in this embodiment). Each rack-side holding portion 224h can hold the rack-side detachable member 230. As shown in FIG. 6, in the present embodiment, the rack-side holding portion 224h is composed of a through hole. The plurality of rack-side holding portions 224h are arranged so as to be arranged at equal intervals in the orthogonal direction.

The handle 229 is a portion gripped by the user when the rack body 222 is moved along the insertion direction. The handle 229 is connected to each side wall 222b.

The rack-side detachable member 230 is removable from the rack 220. Specifically, the rack-side detachable member 230 is detachably connected to each rack-side holding portion 224h of the rack-side holding member 224. The rack-side detachable member 230 has a shape that protrudes from the rack-side holding portion 224h in a direction orthogonal to the insertion direction (downward in the present embodiment) in a state of being held by the rack-side holding portion 224h. In the present embodiment, the rack-side detachable member 230 is composed of a member having a male screw. It is preferable that the rack-side detachable member 230 is composed of the same member as the main body-side detachable member 130. By doing so, the cost is reduced and the assembly workability is improved.

FIG. 7 is a diagram showing an example of an arrangement pattern of the main body side attachment / detachment member 130 and the rack side attachment / detachment member 230 in the three electrophoresis devices 10. FIG. 7 is a conceptual diagram showing that the detachable members 130 and 230 collide with each other when the rack 220 is inserted. In FIG. 7, the main body side detachable member 130 is shown by a broken line, the rack side detachable member 230 is shown by a solid line, and three positions where the main body side detachable member 130 can be arranged are shown by a two-dot chain line 130A. The four positions where the rack-side detachable member 230 can be arranged are indicated by the alternate long and short dash line 230A. In FIG. 7, in the region indicated by the two-dot chain line 130A, each main body side holding portion 124h is indicated by a one-dot chain line at a position corresponding to the three main body side holding portions 124h in the direction parallel to the insertion direction. In the region indicated by the alternate long and short dash line 230A, each rack-side holding portion 224h is indicated by a one-dot chain line at a position corresponding to the four rack-side holding portions 224h in the direction parallel to the insertion direction. In FIG. 7, the arrangement pattern of the main body side attachment / detachment member 130 and the rack side attachment / detachment member 230 in the first electrophoresis apparatus 10 is shown by the alternate long and short dash line P1, and the main body side attachment / detachment member 130 and the main body side attachment / detachment member 130 in the second electrophoresis apparatus 10 are shown. The arrangement pattern of the rack-side attachment / detachment member 230 is shown by the alternate long and short dash line P2, and the arrangement pattern of the main body side attachment / detachment member 130 and the rack-side attachment / detachment member 230 in the third electrophoresis apparatus 10 is shown by the alternate long and short dash line P3. In each electrophoresis apparatus 10, the position where the main body side attachment / detachment member 130 is attached and the position where the rack side attachment / detachment member 230 is attached are the same, but in FIG. 7, for the sake of explanation, the first to third electrophoresis The position where the main body side detachable member 130 is attached and the position where the rack side detachable member 230 is attached in the apparatus 10 are shown offset in the vertical direction in FIG. In FIG. 7, the three main body side holding portions 124h and the four rack side holding portions 224h are not shown in each region indicated by the alternate long and short dash lines P1 to P3. In FIG. 7, the downward direction in FIG. 7 corresponds to the insertion direction.

As shown in FIG. 7, in the first electrophoresis apparatus 10, the main body side attachment / detachment member 130 is attached to the central main body side holding portion 124h among the three main body side holding portions 124h, and the four rack side holding portions are held. The rack-side detachable member 230 is attached to the rack-side holding portions 224h at both ends of the portion 224h.

In the second electrophoresis apparatus 10, the main body side attachment / detachment member 130 is attached to the leftmost main body side holding portion 124h of the three main body side holding portions 124h, and the second from the right end of the four rack side holding portions 224h. A rack-side detachable member 230 is attached to the rack-side holding portion 224h.

In the third electrophoresis apparatus 10, the main body side attachment / detachment member 130 is attached to the rightmost main body side holding portion 124h of the three main body side holding portions 124h, and the second from the left end of the four rack side holding portions 224h. A rack-side detachable member 230 is attached to the rack-side holding portion 224h.

Therefore, the sample unit 200 taken out from the apparatus main body 100 of the first electrophoresis apparatus 10 is inserted into the unit accommodating mechanism 120 of the apparatus main body 100 of the second electrophoresis apparatus 10 or the third electrophoresis apparatus 10. In this case, the rack-side detachable member 230 interferes with the main body-side detachable member 130. Therefore, erroneous assembly of the sample unit 200 of the first electrophoresis apparatus 10 with respect to the apparatus main body 100 of the second electrophoresis apparatus 10 or the third electrophoresis apparatus 10 is prevented.

Similarly, misassembly of the sample unit 200 of the second electrophoresis device 10 with respect to the device main body 100 of the first electrophoresis device 10 or the third electrophoresis device 10 and the first electrophoresis device 10 or the first. It is possible to prevent erroneous assembly of the sample unit 200 of the third electrophoresis device 10 with respect to the device main body 100 of the second electrophoresis device 10.

Further, in the present embodiment, since the rack 220 supporting the sample plate 210 is detachably held with respect to the apparatus main body 100, the rack 220 can be taken out (pulled out) from the unit accommodating mechanism 120 for the next analysis. It is possible to prepare the sample plate 210 to be used and clean the separation flow path f of the microchip C at the same time. Therefore, the time required between each analysis can be shortened.

It should be noted that the embodiments disclosed this time are examples in all respects and should be considered not to be restrictive. The scope of the present invention is shown by the scope of claims rather than the description of the embodiment described above, and further includes all modifications within the meaning and scope equivalent to the scope of claims.

For example, the number of the electrophoresis devices 10 constituting the electrophoresis device group 1 is not limited to 3. The electrophoresis apparatus group 1 may consist of five electrophoresis apparatus 10. In this case, the main body side attachment / detachment member 130 and the rack side attachment / detachment member 230 in each electrophoresis apparatus 10 are arranged as shown in FIG.

In FIG. 8, as in FIG. 7, the main body side detachable member 130 is shown by a broken line, the rack side detachable member 230 is shown by a solid line, and there are two positions where the main body side detachable member 130 can be arranged. It is indicated by the alternate long and short dash line 130A, and six positions where the rack-side detachable member 230 can be arranged are indicated by the alternate long and short dash line 230A. In FIG. 8, in the region indicated by the two-dot chain line 130A, each main body side holding portion 124h is indicated by a one-dot chain line at a position corresponding to the five main body side holding portions 124h in the direction parallel to the insertion direction. In the region indicated by the alternate long and short dash line 230A, each rack-side holding portion 224h is indicated by a one-dot chain line at a position corresponding to the six rack-side holding portions 224h in the direction parallel to the insertion direction. In FIG. 8, the arrangement pattern of the main body side attachment / detachment member 130 and the rack side attachment / detachment member 230 in the first electrophoresis apparatus 10 is shown by the alternate long and short dash line P1, and the main body side attachment / detachment member 130 and the main body side attachment / detachment member 130 in the second electrophoresis apparatus 10 are shown. The arrangement pattern of the rack side attachment / detachment member 230 is shown by the alternate long and short dash line P2, and the arrangement pattern of the main body side attachment / detachment member 130 and the rack side attachment / detachment member 230 in the third electrophoresis apparatus 10 is shown by the alternate long and short dash line P3. The arrangement pattern of the main body side attachment / detachment member 130 and the rack side attachment / detachment member 230 in the fourth electrophoresis device 10 is shown by the alternate long and short dash line P4, and the main body side attachment / detachment member 130 and the rack side attachment / detachment member in the fifth electrophoresis device 10 are shown. The arrangement pattern of 230 is shown by the alternate long and short dash line P5. In FIG. 8, as in FIG. 7, for the sake of explanation, the positions where the main body side detachable member 130 is attached and the positions where the rack side detachable member 230 is attached in the first to fifth electrophoresis devices 10 are shown in FIG. It is shown shifted in the vertical direction in.

As shown in FIG. 8, in the first electrophoresis apparatus 10, the main body side attachment / detachment member 130 is attached to the central main body side holding portion 124h among the five main body side holding portions 124h, and the six rack side holding portions are held. The rack-side detachable member 230 is attached to the rack-side holding portion 224h, which is the second from the left end and the second from the right end of the portion 224h.

In the second electrophoresis apparatus 10, the main body side attachment / detachment member 130 is attached to the second main body side holding portion 124h from the left end of the five main body side holding portions 124h, and both ends of the six rack side holding portions 224h. The rack-side detachable member 230 is attached to the rack-side holding portion 224h, which is the third from the right end.

In the third electrophoresis apparatus 10, the main body side attachment / detachment member 130 is attached to the leftmost main body side holding portion 124h of the five main body side holding portions 124h, and the third from the left end of the six rack side holding portions 224h. The rack-side detachable member 230 is attached to the rack-side holding portion 224h, which is the second from the right end.

In the fourth electrophoresis apparatus 10, the main body side attachment / detachment member 130 is attached to the second main body side holding portion 124h from the right end of the five main body side holding portions 124h, and both ends of the six rack side holding portions 224h. The rack-side detachable member 230 is attached to the rack-side holding portion 224h, which is the third from the left end and the second from the right end.

In the fifth electrophoresis apparatus 10, the main body side attachment / detachment member 130 is attached to the rightmost main body side holding portion 124h of the five main body side holding portions 124h, and the second from the left end of the six rack side holding portions 224h. The rack-side detachable member 230 is attached to the rack-side holding portion 224h, which is the third from the right end.

As shown in FIGS. 7 and 8, the main body side detachable member 130 and the rack side detachable member 230 have the same radius in a plan view, pass through the center of the main body side detachable member 130, and are parallel to the insertion direction. The distance between the straight line and the straight line that passes through the center of the rack-side detachable member 230 and is parallel to the insertion direction and is adjacent to each other in the direction orthogonal to the insertion direction is greater than 0 and less than the diameter of each detachable member 130, 230. It is preferable to set to. In this embodiment, the distance is set to the same length as the radius. Further, each rack-side holding portion 224h may be arranged symmetrically with respect to a straight line passing through the center of the main body-side detachable member 130 arranged in the center of the plurality of main body-side detachable members 130 and parallel to the insertion direction. preferable. By doing so, the distance between the main body side detachable member 130 and the rack side detachable member 230 when the main body side detachable member 130 passes between the rack side detachable members 230 becomes the same, so that the rack 220 is used as the device main body 100. The same operation feeling can be obtained when attaching and detaching.

Here, the arrangement of the main body side attachment / detachment member 130 and the rack side attachment / detachment member 230 in the n units of the electrophoresis apparatus 10 will be supplementarily described.

For each electrophoresis apparatus 10, one of the main body side holding portion 124h and the rack side holding portion 224h has n holding portions, and the other holding portion is set to n + 1.

Between a straight line that passes through the center of the main body side attachment / detachment member 130 and is parallel to the insertion direction and a straight line that passes through the center of the rack side attachment / detachment member 230 and is parallel to the insertion direction and is adjacent to each other in the direction orthogonal to the insertion direction. The distance is set to be greater than 0 and less than the diameter of each of the detachable members 130, 230. It is desirable that the distance between the main body side detachable members 130 is uniform, and it is desirable that the distance between the rack side detachable members 230 is also uniform.

It is preferable that each rack-side holding portion 224h is arranged symmetrically with respect to a straight line passing through the center of the main body-side detachable member 130 arranged in the center of the plurality of main body-side detachable members 130 and parallel to the insertion direction.

In any of the electrophoresis apparatus 10, it is preferable that the position where the main body side attachment / detachment member 130 is attached and the position where the rack side attachment / detachment member 230 is attached are the same. This simplifies design and manufacturing. However, in each electrophoresis apparatus 10, the position where the main body side attachment / detachment member 130 is attached and the position where the rack side attachment / detachment member 230 is attached may be different.

[Aspect]
It will be understood by those skilled in the art that the plurality of exemplary embodiments described above are specific examples of the following embodiments.

(Item 1) The group of electrophoresis devices according to one embodiment is a group of electrophoresis devices including a plurality of electrophoresis devices, and each of the plurality of electrophoresis devices can analyze a sample. The device body includes a sample unit that can hold the sample and is removable from the device body, and the sample unit includes a sample plate having a storage portion for accommodating the sample and the sample plate. It has a rack that supports the rack, and at least one rack-side detachable member that can be attached to and detached from the rack, and the apparatus main body has a unit accommodating mechanism for accommodating the sample unit and the unit accommodating mechanism. The rack has at least one detachable main body side detachable member, the rack has a plurality of rack side holding portions capable of holding the at least one rack side detachable member, and the unit accommodating mechanism has at least the above-mentioned unit accommodating mechanism. The sample unit is the sample unit of the rack-side detachable member held by one of the plurality of rack-side holding portions, which has a plurality of main body-side holding portions capable of holding one main body-side detachable member. When it is accommodated in the unit accommodating mechanism, it interferes with the main body side detachable member held by one of the main body side holding portions among the plurality of main body side holding portions, and is said to be among the plurality of main body side holding portions. The rack side holding portion different from the one rack side holding portion among the plurality of rack side holding portions without interfering with the main body side detachable member held by the main body side holding portion different from the one main body side holding portion. When the sample unit is housed in the unit accommodating mechanism, the rack-side detachable member held in the portion is held on the main body-side holding portion of the plurality of main body-side holding portions. It does not interfere with the detachable member, and interferes with the main body side detachable member held by the other main body side holding portion among the plurality of main body side holding portions.

In this group of electrophoresis devices, in one electrophoresis device, the rack-side attachment / detachment member is held by one of the plurality of rack-side holding portions on the rack-side holding portion, and one of the plurality of main-body-side holding portions is held on the main body side. The main body side attachment / detachment member is held by a main body side holding part separate from the part, and in another electrophoresis device, the rack side attachment / detachment is performed to a rack side holding part different from the rack side holding part of one of the plurality of rack side holding parts. By holding the member and holding the main body side attachment / detachment member in one of the main body side holding parts among the plurality of main body side holding parts, the sample unit of one electrophoresis device becomes the unit accommodating mechanism of the other electrophoresis device. When housed, or when the sample unit of another electrophoresis device is housed in the unit housing mechanism of one electrophoresis device, the rack-side attachment / detachment member interferes with the main body-side attachment / detachment member. Therefore, it is possible to prevent the sample unit from being erroneously assembled to the main body of the device.

(Clause 2) In the group of electrophoresis devices according to paragraph 1, a housing for accommodating the unit accommodating mechanism is further provided, and the housing has an insertion port for inserting the sample unit into the housing. Is formed, and the sample unit is placed in the housing through the insertion slot in a state where the at least one rack-side attachment / detachment member is held by the rack-side holding portion of any of the plurality of rack-side holding portions. It is preferable to have a shape protruding from the rack-side holding portion in a direction orthogonal to the insertion direction of insertion.

(Clause 3) In the electrophoresis apparatus group according to the second paragraph, the unit accommodating mechanism is fixed to a bottom plate having a shape extending along the insertion direction and the bottom plate, and holds the plurality of main bodies. It is preferable to have a main body side holding member having a portion.

According to the group of electrophoresis devices described in the third item, it is possible to change the number and arrangement of the main body side holding portions by changing the main body side holding member.

(Clause 4) In the electrophoresis apparatus group according to the third item, the plurality of main body side holding portions are arranged so as to be arranged in a direction orthogonal to both the thickness direction of the bottom plate and the insertion direction. Is preferable.

(Clause 5) In the electrophoresis apparatus group according to the third or fourth paragraph, the rack is fixed to the bottom wall facing the bottom plate and the bottom wall, and the plurality of rack-side holding portions. It is preferable to have a rack-side holding member having the above.

According to the group of electrophoresis devices described in Item 5, it is possible to change the number and arrangement of the rack-side holding portions by changing the rack-side holding member.

(Section 6) In the group of electrophoresis devices according to paragraph 5, the plurality of rack-side holding portions are arranged so as to be arranged in a direction orthogonal to both the thickness direction of the bottom wall and the insertion direction. Is preferable.

(Clause 7) In the electrophoresis apparatus group according to any one of paragraphs 1 to 6, the apparatus main body includes a dispensing probe unit that sucks and dispenses the sample contained in the housing unit. A chip holding unit that holds a microchip having a separation flow path for separating the sample by electrophoresis, a voltage application unit that applies a voltage to the microchip, a dispensing probe unit, and the voltage application unit. It is preferable to further include a control unit for controlling.

1 Electrophoresis device group, 10 Electrophoresis device, 100 Device body, 110 housing, 110h insertion slot, 111 dispensing probe section, 112 chip holder section, 113 voltage application section, 114 control section, 120 unit accommodation mechanism, 122 bottom plate , 124 body side holding member, 124h body side holding part, 126 guide rail, 130 body side attachment / detachment member, 200 sample unit, 210 sample plate, 212 accommodating part, 220 rack, 222 rack body, 222a bottom wall, 222b side wall, 222c Plate support part, 222d Guided part, 224 Rack side holding member, 224h Rack side holding part, 230 rack side attachment / detachment member, C microchip, f Separation flow path.

Claims (7)

A group of electrophoresis devices consisting of multiple electrophoresis devices,
Each of the electrophoresis devices of the plurality of electrophoresis devices is
The main body of the device that can analyze the sample and
A sample unit that can hold the sample and is removable from the main body of the device is provided.
The sample unit is
A sample plate having an accommodating portion for accommodating the sample, and
A rack that supports the sample plate and
It has at least one rack-side detachable member that can be attached to and detached from the rack.
The main body of the device is
A unit accommodating mechanism for accommodating the sample unit and
It has at least one main body side detachable member that can be attached to and detached from the unit accommodating mechanism.
The rack has a plurality of rack-side holding portions capable of holding the at least one rack-side attachment / detachment member.
The unit accommodating mechanism has a plurality of main body side holding portions capable of holding the at least one main body side detachable member.
The rack-side attachment / detachment member held by one of the plurality of rack-side holding portions is one of the plurality of main body-side holding portions when the sample unit is housed in the unit housing mechanism. The main body that interferes with the main body side detachable member held by the main body side holding portion and is held by the main body side holding portion different from the one main body side holding portion among the plurality of main body side holding portions. Does not interfere with the side attachment / detachment member
The rack-side detachable member held in a rack-side holding portion different from the one rack-side holding portion among the plurality of rack-side holding portions is described when the sample unit is accommodated in the unit accommodating mechanism. It does not interfere with the main body side detachable member held by the one main body side holding portion among the plurality of main body side holding portions, and is held by the other main body side holding portion among the plurality of main body side holding portions. A group of electrophoresis devices that interfere with the detachable member on the main body side. Further provided with a housing for accommodating the unit accommodating mechanism
The housing is formed with an insertion port for inserting the sample unit into the housing.
The at least one rack-side attachment / detachment member is held in the rack-side holding portion of any of the plurality of rack-side holding portions, and has an insertion direction in which the sample unit is inserted into the housing through the insertion opening. The group of electrophoresis devices according to claim 1, having a shape protruding from the rack-side holding portion in an orthogonal direction. The unit accommodating mechanism
A bottom plate having a shape extending along the insertion direction,
The electrophoresis apparatus group according to claim 2, further comprising a main body side holding member fixed to the bottom plate and having the plurality of main body side holding portions. The group of electrophoresis devices according to claim 3, wherein the plurality of main body side holding portions are arranged so as to be arranged in a direction orthogonal to both the thickness direction of the bottom plate and the insertion direction. The rack is
The bottom wall facing the bottom plate and
The electrophoresis apparatus group according to claim 3 or 4, further comprising a rack-side holding member fixed to the bottom wall and having the plurality of rack-side holding portions. The group of electrophoresis devices according to claim 5, wherein the plurality of rack-side holding portions are arranged so as to be arranged in a direction orthogonal to both the thickness direction of the bottom wall and the insertion direction. The main body of the device is
A dispensing probe section for sucking and dispensing the sample housed in the housing section, and a dispensing probe section.
A chip holder that holds a microchip having a separation flow path for separating the sample by electrophoresis, and a chip holder.
A voltage application unit that applies voltage to the microchip, and
The electrophoresis apparatus group according to any one of claims 1 to 6, further comprising a control unit for controlling the dispensing probe unit and the voltage application unit.

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