WO2017002239A1 - キャピラリカートリッジ、及び電気泳動装置 - Google Patents
キャピラリカートリッジ、及び電気泳動装置 Download PDFInfo
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- WO2017002239A1 WO2017002239A1 PCT/JP2015/069040 JP2015069040W WO2017002239A1 WO 2017002239 A1 WO2017002239 A1 WO 2017002239A1 JP 2015069040 W JP2015069040 W JP 2015069040W WO 2017002239 A1 WO2017002239 A1 WO 2017002239A1
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- Prior art keywords
- capillary
- detection unit
- electrode holder
- support
- cartridge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/447—Systems using electrophoresis
- G01N27/44704—Details; Accessories
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/447—Systems using electrophoresis
- G01N27/44704—Details; Accessories
- G01N27/44708—Cooling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/447—Systems using electrophoresis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/447—Systems using electrophoresis
- G01N27/44704—Details; Accessories
- G01N27/44717—Arrangements for investigating the separated zones, e.g. localising zones
- G01N27/44721—Arrangements for investigating the separated zones, e.g. localising zones by optical means
Definitions
- the present invention relates to a capillary cartridge and an electrophoretic apparatus using the same, and more particularly to a technique for improving its attachment property and heat dissipation property.
- a capillary filled with a separation medium is kept at a constant temperature and a high voltage is applied to separate charged DNA for each base length.
- the sample base sequence can be read by irradiating the capillary with excitation light and detecting the fluorescence emitted from the fluorescent dye label of the DNA passing through the capillary.
- Patent Documents 1 and 2 are prior art documents related to capillary electrophoresis.
- Patent Document 1 discloses a capillary unit having a capillary, a frame that supports the capillary, a load header that holds a capillary cathode portion, and an electrophoresis apparatus using the capillary unit.
- the frame has a separator for separating and holding the capillaries, and the capillaries can be held in a certain shape by penetrating the separators.
- Patent Document 2 discloses an electrophoresis apparatus including a capillary and a support on which the capillary is arranged, a temperature control heater in direct contact with the capillary, an optical system, and a high-voltage power supply. Due to the structure in which the capillary is in direct contact with the heater, the time for raising the temperature to a predetermined temperature during electrophoretic analysis can be shortened.
- the capillary is directly sandwiched between the heater and the support. For this reason, at the time of electrophoretic analysis, the structure is not configured to actively diffuse the heat generated from the capillary when a high voltage is applied to both ends of the capillary. If the capillary is shortened in order to shorten the analysis time, the total resistance value of the capillary is reduced and the flowing current is increased, so that the amount of heat generated from the capillary is increased. Therefore, if the structure is not such that heat is actively diffused, the heat of the capillary cannot be released and the internal temperature of the capillary becomes higher than a predetermined temperature. As a result, the migration speed of the sample becomes unstable and the separation performance decreases. Therefore, this structure cannot shorten the time required for electrophoretic analysis.
- An object of the present invention is to provide a capillary cartridge and an electrophoresis apparatus that solve the above-described problems and improve the heat dissipation performance for improving the attachment property of the capillary and realizing the analysis in a short time.
- the present invention provides a capillary cartridge for use in an electrophoresis apparatus, including a capillary, a plate-like support that supports the capillary, a capillary head that bundles one end of the capillary, and other capillaries.
- a capillary cartridge comprising an electrode provided at an end, a detection part provided in a part of the capillary, and a heat radiating body provided between the capillary and a support.
- a capillary a capillary, a support that supports the capillary, a capillary head that bundles one end of the capillary, an electrode provided at the other end of the capillary, and a part of the capillary Capillary cartridge having a detection unit provided on the substrate, a heat radiating member provided between the capillary and the support, a thermostat for holding the capillary at a predetermined temperature, and an injection for injecting the electrophoresis medium into the capillary
- an electrophoresis apparatus including a mechanism and an irradiation detection unit that performs irradiation and detection of light during electrophoresis using a capillary.
- the temperature rise inside the capillary can be suppressed by the heat radiating body, electrophoresis can be performed under a high voltage application condition in which the amount of heat generation is large, and the analysis time can be shortened.
- the complexity of operation can be improved by making the structure which integrated the capillary and the support body and reducing the fixed location at the time of attachment. This makes it possible to improve both analysis performance and usability.
- FIG. 1 is a schematic diagram illustrating one configuration of a capillary electrophoresis apparatus according to a first embodiment.
- 1 is a top view of a capillary electrophoresis apparatus according to Example 1.
- FIG. FIG. 3 is a cross-sectional view of the capillary electrophoresis apparatus according to the first embodiment taken along line AA.
- FIG. 3 is a diagram illustrating a configuration of a capillary cartridge according to the first embodiment.
- 1 is an exploded view of a capillary cartridge according to Embodiment 1.
- FIG. Sectional drawing which shows an example of the support body and heat radiator which concern on Example 1.
- FIG. FIG. 3 is a view for explaining attachment of a capillary cartridge according to the first embodiment. Sectional drawing for demonstrating operation
- FIG. FIG. 6 is a diagram for explaining a capillary adjustment margin according to the first embodiment.
- FIG. 3 is a workflow diagram for attaching a capillary cartridge according to the first embodiment.
- FIG. 3 is a cross-sectional view showing a capillary periphery according to the first embodiment. Sectional drawing which shows an example of the thermostat door which concerns on Example 1.
- FIG. FIG. 6 is a diagram illustrating a configuration of a capillary cartridge according to a second embodiment.
- FIG. 10 is a diagram illustrating a configuration of a capillary cartridge according to a third embodiment.
- FIG. 10 is a diagram illustrating a configuration of a support according to a fourth embodiment. Sectional drawing which shows one structure of the support body which concerns on Example 5.
- Example 1 is an example of a capillary cartridge and an electrophoresis apparatus using the same that improve the heat dissipation performance for improving the mounting property and realizing a short time analysis. That is, Example 1 is a capillary cartridge used in an electrophoresis apparatus, and includes a capillary, a plate-like support that supports the capillary, a capillary head that bundles one end of the capillary, and an electrode that is provided at the other end of the capillary. And a detection unit provided in a part of the capillary, and a heat sink provided between the capillary and the support.
- the first embodiment includes a capillary, a support that supports the capillary, a capillary head that bundles one end of the capillary, an electrode provided at the other end of the capillary, a detection unit provided at a part of the capillary,
- a capillary cartridge having a heat sink provided between the capillary and the support, a thermostatic chamber for holding the capillary at a predetermined temperature, an injection mechanism for injecting an electrophoretic medium into the capillary, and electricity using the capillary
- FIG. 1 shows an apparatus configuration diagram of a capillary electrophoresis apparatus according to the first embodiment.
- This apparatus can be roughly divided into two units: an irradiation detection / constant temperature bath unit 40 in the upper part of the apparatus and an autosampler unit 20 in the lower part of the apparatus.
- a Y-axis drive body 23 is mounted on the sampler base 21 and can be driven on the Y-axis.
- a Z-axis drive body 24 is mounted on the Y-axis drive body 23 and can drive the Z-axis.
- a sample tray 25 is mounted on the Z-axis driver 24, and the user sets the electrophoresis medium container 28, the anode side buffer container 29, the cathode side buffer container 33, and the sample container 26 on the sample tray 25. .
- the sample container 26 is set on the X-axis driver 22 mounted on the sample tray 25, and only the sample container 26 can be driven on the X-axis on the sample tray 25.
- a liquid feeding mechanism 27 is also mounted on the Z-axis drive body 24. The liquid feeding mechanism 27 is disposed below the electrophoresis medium container 28.
- the irradiation detection / temperature chamber unit 40 includes a temperature chamber unit 41 and a temperature chamber door 43 which are the above-described temperature chambers, and the inside can be kept at a constant temperature.
- An irradiation detection unit 42 which is the above-described irradiation detection unit, is mounted behind the thermostatic chamber unit 41, and detection during electrophoresis can be performed.
- a capillary cartridge 01 which will be described in detail later, is set in the thermostatic chamber unit 41, electrophoresis is performed while the capillary is kept at a constant temperature in the thermostatic chamber unit 41, and detection is performed by the irradiation detection unit 42.
- the thermostat unit 41 is also equipped with an electrode (anode) 44 for dropping to GND when a high voltage for electrophoresis is applied.
- the capillary cartridge 01 is fixed to the thermostat unit 41.
- the electrophoresis medium container 28, the anode side buffer container 29, the cathode side buffer container 33, and the sample container 26 can be driven on the YZ axis by the autosampler unit 20, and only the sample container 26 is further driven on the X axis. I can do it.
- the electrophoresis medium container 28, the anode side buffer solution container 29, the cathode side buffer solution container 33, and the sample container 26 are automatically connected to arbitrary positions by the movement of the autosampler unit 20 to the capillary of the fixed capillary cartridge 01. I can do it.
- FIG. 2 shows a top view of the capillary electrophoresis apparatus shown in FIG.
- the anode side buffer solution container 29 set on the sample tray 25 includes an anode side cleaning layer 30, an anode side electrophoresis buffer layer 31, and an anode side sample introduction buffer layer 32.
- the cathode side buffer container 33 includes a waste liquid layer 34, a cathode side cleaning layer 35, and a cathode side electrophoresis buffer layer 36.
- the electrophoresis medium container 28, the anode-side buffer container 29, the cathode-side buffer container 33, and the sample container 26 are arranged in a positional relationship as illustrated. Accordingly, the positional relationship between the anode side and the cathode side when the capillary cartridge in the thermostat unit 41 is connected to the capillary 02 is “electrophoresis medium container 28-waste liquid layer 34”, “anode side cleaning layer 30—cathode side”. “Cleaning layer 35”, “Anode-side electrophoresis buffer layer 31—Cathode-side electrophoresis buffer layer 36”, “Anode-side sample introduction buffer layer 32-sample container 26”.
- FIG. 3 is a cross-sectional view taken along the line AA in FIG.
- the electrophoresis medium container 28 is set on the sample tray 25. Further, the liquid feeding mechanism 27 is disposed so that the plunger built in the liquid feeding mechanism 27 is located below the electrophoresis medium container 28.
- the right side in FIG. 3 of the capillary 02 is the cathode side, and the left side is the anode side.
- the autosampler unit 20 moves to the position of “anode-side electrophoresis buffer layer 31-cathode-side electrophoresis buffer layer 36”, a high voltage is applied to the cathode-side capillary 02, the cathode-side buffer container 33, Electrophoresis is performed by flowing the electrode through the anode buffer solution container 29 through the electrode (anode) 44 to GND.
- the position of the sample tray 25 may be fixed, and an apparatus structure in which the irradiation detection / constant temperature chamber unit 40 is movable may be employed.
- FIG. 4 shows a schematic diagram of one configuration of the capillary cartridge in the present embodiment.
- the capillary cartridge 01 includes a capillary 02, a support body 03, a heat radiating body 04, an electrode holder 05, a detection unit 06, a capillary head 07, an electrode (cathode) 08, and a handle 09 which is a gripping unit.
- the electrode (cathode) 08 may have a structure directly fixed to the support 03.
- the capillary cartridge 01 is arranged in this order from the front side of FIG. 4 in the order of the support body 03 having the handle 09, the heat radiator 04, and the capillary 02.
- the capillary head 07 is an end of the capillary 02 and is an injection end or a discharge end that holds the capillary 02 in a bundle and fills the electrophoresis medium.
- the capillary cartridge 01 when the capillary cartridge 01 is attached to the electrophoresis apparatus, it functions as an injection end by connecting the capillary head 07 and a container storing the electrophoresis medium.
- the capillary head is installed in a bent state in the electrophoresis apparatus.
- FIG. 5 shows an exploded view of the capillary cartridge in this embodiment shown in FIG.
- the radiator 04 is affixed to the support 03 by the adhesiveness or tackiness of the radiator 04, chemical adhesion, physical attachment mechanism, or the like.
- the capillary 02 has an integral structure by attaching the electrode holder 05 and the detection unit 06 to the support body 03.
- the electrode holder 05 holds an electrode (cathode) 08, and is fixed to the support body 03 by passing the electrode holder fixing pin 10 formed on the electrode holder 05 through the electrode holder fixing hole 11 of the support body 03. It has become.
- the support body 03 includes a detection unit fixing frame 12 that fixes the detection unit 06.
- the detection unit 06 is fixed to the support body 03 by being fitted into the detection unit fixing frame 12 formed on the support body 03.
- the Reference numerals 14 and 16 denote a positioning hole and an electrode holder positioning hole, respectively, into which the detection unit positioning pins are inserted.
- the capillary 02 is a soot channel coated with light shielding and strength, and is, for example, a quartz glass tube with an inner diameter of about 50 ⁇ m coated with polyimide.
- the tube is filled with an electrophoresis medium to provide an electrophoresis path for separating the sample. Since the capillary 02 and the heat radiating body 04 are in close contact, heat generated from the capillary 02 when a high voltage is applied can be released to the support 03 side by the heat radiating body 04, and temperature rise inside the capillary 02 can be prevented. it can.
- Electrodes (cathodes) 08 exist corresponding to the number of capillaries 02, and by applying a voltage, charged samples can be introduced into the capillaries 02 and electrophoretic separation can be performed for each molecular size.
- the electrode (cathode) 08 is a stainless steel pipe having an inner diameter of about 0.1 to 0.5 m, for example, and a capillary 02 is inserted therein.
- the detection unit 06 is located in the middle part of the capillary 02, and the capillaries 02 are arranged in a plane with a certain accuracy.
- the detection unit 06 is a part for detecting the fluorescence of the sample passing through the capillary 02 and needs to be aligned with the position of the detection system of the apparatus with high accuracy.
- FIG. 6 shows a cross-sectional view of the support body 03 and the heat radiating body 04 of the capillary cartridge of the present embodiment.
- the radiator 04 is, for example, soft silicon rubber having heat dissipation performance and insulation performance.
- the heat dissipation effect is increased by increasing the contact area with the capillary by deformation of the rubber, and damage to the capillary can be prevented by cushioning. is there.
- a soft member such as rubber is crushed and deformed when a load is applied, and the contact area with the capillary is reduced or the formation of an air layer prevents heat conduction. It is necessary to control the shape and deformation amount according to the situation.
- the support body 03 of the capillary cartridge of the present embodiment has a box-type structure, and the heat radiating body 04 is fixed in the plane direction by the protruding portion 03A provided on the outer peripheral portion of the support body 03 and projecting toward the heat radiating body 04 side. It is restricted so that it cannot be deformed beyond the size of. Also, by providing a gap between the end of the radiator 04 and the outer periphery of the support 03, that is, by designing the offset distance to the protrusion 03A of the support 03 based on the elastic modulus of the radiator 04. Further, it is possible to prevent the heat radiator 04 from protruding beyond the projecting portion 03A and deforming.
- the height of the protrusion 03A of the support body 03 is lower than the thickness of the heat radiating body 04, and the heat radiating body 04 does not collapse beyond the height of the support body 03 even when a load is applied. For this reason, the heat radiating body 04 can be reliably brought into contact with the apparatus surface to which the capillary cartridge is attached.
- silicon rubber having a thermal conductivity of 0.1 to 5 W / m ⁇ K is used for the radiator 04, a heat dissipation performance of 200 W / m 2 ⁇ K or more can be obtained.
- FIG. 7 shows an example of a detailed view of attachment of the capillary cartridge of the present embodiment.
- the detection unit 06 is temporarily fixed by the clip 52 when the detection unit positioning pin 13 is attached to the attachment surface 50 on the thermostat unit 41 side of the electrophoresis apparatus and is pushed through the positioning hole 14 of the support 03.
- the tapered electrode holder positioning pin 15 on the thermostatic chamber unit 41 side of the apparatus to be attached automatically enters the electrode holder positioning hole 16 of the support 03, the capillary cartridge 01 is moved in one operation. 41 is temporarily fixed.
- the electrode holder positioning pin 15 and the electrode holder positioning hole 16 may be mounted in opposite positions. That is, the electrode holder and the support can be fixed by passing an electrode holder positioning pin provided on one side through an electrode holder positioning hole provided on the other side.
- FIG. 8 shows a cross-sectional view of the clip 52.
- the detection unit 06 hits the convex part of the clip 52 so that the clip 52 is pushed in once. Further, the detection unit 06 has a structure that exceeds the convex portion of the clip 52, and the clip 52 is temporarily fixed by pressing the detection unit 06 by the reaction force of the spring 53. At this time, as the clip 52 is instantaneously moved by the reaction force at the same time as the convex portion is exceeded, a clicking sound is generated, and the user can confirm that the capillary cartridge 01 is temporarily fixed.
- the detection unit 06 and the optical system of the electrophoresis apparatus can be reliably aligned with high accuracy by first positioning the detection unit 06 first.
- the electrode holder positioning pin 15 is tapered as shown in FIG. 7, the electrode holder positioning pin 15 is surely inserted into the electrode holder positioning hole 16 even if the position of the electrode holder positioning pin 15 is slightly shifted for each apparatus. If the position of the detection unit 06 is determined, the electrode holder 05 can also be temporarily fixed. For this reason, the user can perform a series of operations for attaching the capillary cartridge 01 with the grip 09, which is a gripping part, so that the user can operate without touching the detection part 06 or forcibly bending the capillary 02. It is possible to improve usability and reduce the risk of damage.
- FIG. 9 shows a detailed view of the capillary adjustment allowance of the capillary cartridge of the present embodiment.
- the capillary head 07 and the electrophoresis medium container 28 are connected when the capillary cartridge 01 is attached.
- the position of the capillary head 07 must be moved according to the position of the electrophoresis medium container 28. Don't be. This is because if the heights of the capillary head 07 and the tip of the electrode (cathode) 08 are not uniform, a siphon phenomenon occurs in which the migration medium in the capillary 02 moves. It is because it is necessary to arrange.
- the capillary 02 from the detection unit 06 to the capillary head 07 is designed to be the shortest distance to the polymer container such as the electrophoresis medium container 28, the position of the polymer container is determined by the apparatus. At the time of deviation, the height is changed by moving the capillary head 07 to the left and right.
- the capillary 02 is designed to have a length obtained by adding the adjustment margin to the shortest distance from the detection unit 06 to the polymer container, and the capillary head 07 is moved in the left-right direction. However, it can be kept at the same height as the tip of the electrode (cathode) 08.
- the capillary head 07 is moved while the capillary cartridge 01 is completely fixed, the heat radiating body 04 may be worn out or an excessive force may be applied to the capillary 02.
- the capillary head 07 is Before the connection, the capillary cartridge 01 is temporarily fixed.
- the detection unit 06 is held in the cartridge plane direction by the reaction force of the spring 53 of the clip 52, and is held in the cartridge vertical direction by the convex portion of the clip 52. In this structure, the capillary cartridge 01 is not detached by the user moving the capillary head 07.
- the capillary cartridge 01 is pressed by the thermostatic chamber door 43 shown in FIG.
- the electrode holder positioning pin 15 enters the electrode holder positioning hole 16 so that the entire capillary cartridge 01 is completely fixed.
- a clicking sound is generated, and the user can confirm that the capillary cartridge 01 is completely fixed. Note that a click sound may be generated using a structure similar to that of the clip 52 at the fixing portion of the electrode holder 05.
- FIG. 10 shows a workflow for attaching the capillary cartridge 01 of the present embodiment.
- the detection unit 06 is temporarily fixed, and at the same time, the electrode holder 05 is temporarily fixed (S101).
- the capillary head 07 and the electrophoresis medium container 28 are connected (S102), and finally the thermostat chamber door 43 is closed, whereby the capillary cartridge 01 is pushed in and fixed (S103), and the attachment is completed (S104).
- the structure in which the whole is automatically fixed by fixing one place can reduce the procedure and reduce the complexity of the capillary 02 attachment.
- FIG. 11 shows a cross-sectional view of the periphery of the capillary 02 of the present embodiment.
- silicon rubber is used as the radiator 04
- the radiator 04 deforms along the shape of the capillary 02 when the capillary cartridge 01 is brought into contact with the mounting surface 50 on the electrophoresis apparatus side and a predetermined load is applied. Therefore, the contact area with the capillary 02 can be increased. At this time, it is difficult to create an air layer between the mounting surface 50 and the heat radiator 04 by applying a load uniformly to the entire surface of the heat radiator 04 by the door. Conversely, if the air layer is completely exhausted, the heat radiating body 04 becomes like a suction cup, and the capillary cartridge 01 may not be removed.
- the structure is an integral structure with the capillary 02 sandwiched between them, and the capillary 02 is arranged to the outside of the heat radiating body 04, so that the air layer is not completely lost. Therefore, it can be easily removed without sticking to the attachment surface 50.
- FIG. 12 shows one structural example of the thermostatic chamber door of the present embodiment, and the thermostatic chamber door has a two-stage structure with an elastic body such as a spring interposed therebetween. That is, the thermostatic chamber door 43 has a two-stage structure in which the push plate 57 is attached to the door support 58 via one or more push plate springs 56, and has a cushioning property.
- the spring constant By adjusting the spring constant, the load applied to the capillary cartridge 01 when the thermostatic chamber door 43 is closed can be controlled. For example, when twelve springs 53 having a spring constant of 3 N / mm are used, a load of 30 N can be applied when the thermostatic chamber door 43 is closed.
- a heat radiator is provided between a capillary provided with a detection portion at a part thereof and a plate-like support body that supports the capillary, so that the heat radiator can provide the inside of the capillary. Therefore, it is possible to perform electrophoresis under a high voltage application condition in which the amount of heat generation is large, and shorten the analysis time. Further, it is possible to improve the complexity of the operation by reducing the number of fixing points when the capillaries, the support body and the heat radiating body are integrated.
- the detection part and the cathode electrode part of the capillary are integrated with the support, and the entire capillary cartridge is electrophoresed by fixing two places of the support and the anode electrode part of the capillary. Since it is fixed if pressed by the door mechanism of the device, it can be easily attached with few steps. Furthermore, since the arrangement of capillaries is also supported, the risk of breakage can be reduced.
- the capillary is in direct contact with a member having high thermal conductivity, heat generated from the capillary can be released by applying a high voltage during electrophoresis. As a result, the temperature inside the capillary becomes stable at a predetermined temperature, so that the analysis performance of the electrophoresis apparatus is improved and the analysis time can be shortened.
- Example 2 is an example of a capillary cartridge in which the shape of the heat radiating body of the capillary cartridge is a planar shape corresponding to the region where the capillary holds the support.
- the capillary cartridge maintains the heat dissipation performance.
- the cost can be reduced. For example, a heat dissipation performance of 200 W / m 2 ⁇ K or more can be obtained even when the heat radiator 04 is disposed only in the periphery of the capillary 02 shown in FIG. 5 and the heat capacity is reduced to 50 J / K.
- the heat radiator 04 since the heat radiator 04 is arrange
- Example 3 is an example of a capillary cartridge having a configuration in which the detection unit and the electrode holder are separately fixed. Similar to the first embodiment, the electrode holder is fixed by passing the electrode holder positioning pin on the apparatus side through the electrode holder positioning hole.
- the detection unit 06 is configured to be connected by the support body 03 and the S-shaped detection unit holding member 54, so that the position can be flexibly moved in a planar shape, Can be fixed. According to the present embodiment, the attaching operation can be performed more easily.
- Example 4 is an example in which a hole for a handle that functions as a gripping portion is provided in the support instead of the handle of the capillary cartridge.
- a hole for a handle that functions as a gripping portion is provided in the support instead of the handle of the capillary cartridge.
- the risk of dropping during carrying or mounting can be reduced.
- positioning the handle hole 55 in the vicinity of the detection unit facilitates positioning.
- the force applied at the time of removal can be dispersed without concentrating on one place, so that deformation and distortion of the support body 03 can be prevented. The efficiency of work and removal work can be improved.
- Example 5 is an example in which the support of the capillary cartridge has a two-stage structure. As shown in FIG. 16, a push plate 57 is attached to the back side of the support 03 to which the heat radiating body 04 is attached, and one or more push plate springs 56 are inserted between the support 03 and the push plate 57. With the structure, the capillary cartridge itself can be provided with cushioning properties. In the case of the present embodiment, the thermostatic chamber door 43 as described in the first embodiment does not need to be a two-stage structure.
- the present invention can suppress the temperature rise inside the capillary by the heat radiating body, thereby enabling electrophoresis under a high voltage application condition in which the heat generation amount is large, and shortening the analysis time. Can do. Moreover, the complexity of operation can be improved by making the structure which integrated the capillary and the support body and reducing the fixed location at the time of attachment. This makes it possible to improve both analysis performance and usability.
- this invention is not limited to the above-mentioned Example, Various modifications are included.
- the above-described embodiments have been described in detail for better understanding of the present invention, and are not necessarily limited to those having all the configurations described.
- a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment.
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Abstract
Description
Claims (15)
- 電気泳動装置に用いるキャピラリカートリッジであって、
キャピラリと、
前記キャピラリを支持する支持体と、
前記キャピラリの一端を束ねるキャピラリヘッドと、
前記キャピラリの他端に設けられた電極と、
前記キャピラリの一部に設けられた検出部と、
前記キャピラリと前記支持体の間に設けられた放熱体とを備えた、
ことを特徴とするキャピラリカートリッジ。 - 請求項1に記載のキャピラリカートリッジであって、
前記支持体の外周部に、前記放熱体側に突き出た突出部を備えた、
ことを特徴とするキャピラリカートリッジ。 - 請求項2に記載のキャピラリカートリッジであって、
前記放熱体の端部と前記支持体の外周部との間に空隙を設けた、
ことを特徴とするキャピラリカートリッジ。 - 請求項1に記載のキャピラリカートリッジであって、
前記支持体は、前記検出部を固定する検出部固定枠を備えた、
ことを特徴とするキャピラリカートリッジ。 - 請求項1に記載のキャピラリカートリッジであって、
前記支持体は掴持部を有する、
ことを特徴とするキャピラリカートリッジ。 - 請求項1に記載のキャピラリカートリッジであって、
前記支持体に、前記電気泳動装置側に設けられた検出部位置決めピンが入る検出部位置決め穴が設けられた、
ことを特徴とするキャピラリカートリッジ。 - 請求項1に記載のキャピラリカートリッジであって、
前記電極を保持する電極ホルダを更に有する、
ことを特徴とするキャピラリカートリッジ。 - 請求項7に記載のキャピラリカートリッジであって、
前記電極ホルダと前記支持体は、一方に設けられた電極ホルダ固定ピンを他方に設けられた電極ホルダ固定穴に通すことにより固定する、
ことを特徴とするキャピラリカートリッジ。 - 請求項8に記載のキャピラリカートリッジであって、
前記電極ホルダに、前記電気泳動装置に設けられた前記電極ホルダ位置決めピンが入る電気電極ホルダ位置決め穴が設けられた、
ことを特徴とするキャピラリカートリッジ。 - 請求項1に記載のキャピラリカートリッジであって、
前記放熱体は、前記キャピラリが前記支持体を這う領域に対応した平面形状を有する、
ことを特徴とするキャピラリカートリッジ。 - キャピラリと、前記キャピラリを支持する支持体と、前記キャピラリの一端を束ねるキャピラリヘッドと、前記キャピラリの他端に設けられた電極と、前記キャピラリの一部に設けられた検出部と、前記キャピラリと前記支持体の間に設けられた放熱体とを有するキャピラリカートリッジと、
前記キャピラリを所定の温度に保持する恒温槽と、
前記キャピラリに電気泳動媒体を注入するための注入機構と、
前記キャピラリを用いた電気泳動時に光の照射と検出を行う照射検出部、とを備える、
ことを特徴とする電気泳動装置。 - 請求項11に記載の電気泳動装置であって、
前記キャピラリカートリッジは前記電極を保持する電極ホルダを更に有し、
前記恒温槽は、前記検出部及び前記電極ホルダをそれぞれ固定するための検出部位置決めピン及び電極ホルダ位置決めピンを有する、
ことを特徴とする電気泳動装置。 - 請求項12に記載の電気泳動装置であって、
前記支持体は、前記検出部を固定するための検出部位置決め穴を有し、前記電極ホルダは、前記電極ホルダを固定するための電極ホルダ位置決め穴を有する、
ことを特徴とする電気泳動装置。 - 請求項13に記載の電気泳動装置であって、
前記恒温槽は、恒温槽ドアを有し、
前記キャピラリカートリッジを前記恒温槽ドアで押し付けることで、前記キャピラリカートリッジを前記恒温槽に固定する、
ことを特徴とする電気泳動装置。 - 請求項14に記載の電気泳動装置であって、
前記恒温槽ドアは、弾性体を挟んだ2段構造を有する、
ことを特徴とする電気泳動装置。
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CN202011430024.2A CN112557484B (zh) | 2015-07-01 | 2015-07-01 | 电泳装置 |
CN201580081316.0A CN107735678B (zh) | 2015-07-01 | 2015-07-01 | 毛细管盒及电泳装置 |
DE112015006618.7T DE112015006618B4 (de) | 2015-07-01 | 2015-07-01 | Kapillarpatrone und Elektrophoresevorrichtung |
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JP2017525753A JP6568216B2 (ja) | 2015-07-01 | 2015-07-01 | キャピラリカートリッジ、及び電気泳動装置 |
PCT/JP2015/069040 WO2017002239A1 (ja) | 2015-07-01 | 2015-07-01 | キャピラリカートリッジ、及び電気泳動装置 |
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GB201721473D0 (en) | 2018-01-31 |
CN107735678A (zh) | 2018-02-23 |
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CN112557484B (zh) | 2023-06-06 |
US11644438B2 (en) | 2023-05-09 |
US20180196001A1 (en) | 2018-07-12 |
GB2555983A (en) | 2018-05-16 |
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