JPH0323572Y2 - - Google Patents

Description

【考案の詳細な説明】 この考案は、自動化学分析装置における試料分
注ピペツト洗浄装置に係り、特に試料管より吸込
んだ液体試料を反応管に分注するピペツトに付着
する血清等の液体試料を洗い落すとともに、該洗
浄後ピペツト表面に洗浄液の液滴が付着すること
がない洗浄装置に関する。[Detailed description of the invention] This invention relates to a sample dispensing pipette cleaning device in an automatic chemical analyzer, and in particular cleans liquid samples such as serum that adhere to the pipette that dispenses the liquid sample drawn from the sample tube into the reaction tube. The present invention relates to a cleaning device that cleans a pipette and prevents droplets of cleaning liquid from adhering to the surface of a pipette after cleaning.

一般に、試料管中の試料をピペツトで吸引し、
反応管に分注するようにした方式の試料分注装置
においては、引き続き分注されるべき次の試料の
吸引に備えてピペツトの表面に付着する試料を予
じめ洗浄しておくことが分析精度維持上要請され
る。 Generally, the sample in the sample tube is aspirated with a pipette,
For sample dispensing devices that dispense into reaction tubes, it is recommended to wash the sample that adheres to the surface of the pipette in advance in preparation for aspirating the next sample to be dispensed. Required to maintain accuracy.

ところが、上記ピペツトの洗浄後、該洗浄が不
完全である場合ピペツトの先端及びその周囲に付
着残存する試料に洗浄液が付着するため、そのま
ま次の試料管中にそのピペツトを挿入すると、ピ
ペツトに付着する洗浄液に試料が薄められ、その
結果分析精度の低下を来たすという問題を有して
いた。 However, after washing the pipette, if the washing is incomplete, the cleaning solution will adhere to the sample that remains on the tip of the pipette and its surroundings, so if you insert the pipette into the next sample tube, it will stick to the pipette. There was a problem in that the sample was diluted in the cleaning solution used, resulting in a decrease in analysis accuracy.

かかる問題を解決すべく、近年では第１図に示
すようなものが既に知られている。 In order to solve this problem, a device as shown in FIG. 1 has already been known in recent years.

この装置は、試料分注ピペツト１が洗浄槽２内
に挿入されたとき、該ピペツト１を２つの吸水性
部材３，３で挾み込んで、上記ピペツト１が洗浄
槽２内から脱出するとき、該ピペツト１表面に付
着する試料や洗浄液を上記吸水性部材３，３で払
拭するように構成されている。 In this device, when a sample dispensing pipette 1 is inserted into a washing tank 2, the pipette 1 is sandwiched between two water-absorbing members 3, 3, and when the pipette 1 escapes from the washing tank 2, the pipette 1 is inserted into a washing tank 2. The pipette 1 is configured so that the sample and washing liquid adhering to the surface thereof are wiped away by the water absorbing members 3, 3.

しかしながら、かかる装置にあつては、吸水性
部材３，３をタイミング良く接近させ、かつ離間
させなければならないため、機械的に複雑であ
り、しかも装置全体が大型化し、かつコスト高と
なる等の不具合を有していた。 However, in such a device, the water-absorbing members 3, 3 must be brought close to each other and separated in a timely manner, which makes the device mechanically complex, increases the size of the device as a whole, and increases cost. It had a problem.

この考案はかかる現状に鑑み、上記従来の不具
合を解決すべき為されたものであつて、洗浄槽内
の洗浄液中に、その表面に多数の洗浄毛体を植設
した一対の保持体を、その表面を対面させた状態
で浸漬しかつ洗浄槽内外で昇降可能に配設し、複
数本密に配列されたピペツト表面に付着する試料
を上記洗浄毛体で完全に洗い落すことにより、洗
浄後も洗浄液が上記ピペツト表面に付着すること
がない自動化学分析装置における試料分注ピペツ
ト洗浄装置を提供することを目的とする。 In view of the current situation, this invention was devised to solve the above-mentioned problems of the conventional technology. After washing, the pipettes are immersed with their surfaces facing each other and arranged so that they can be raised and lowered in and out of the washing tank. Another object of the present invention is to provide a sample dispensing pipette cleaning device for an automatic chemical analyzer in which cleaning liquid does not adhere to the surface of the pipette.

以下、この考案に好適な実施例を添付図面に基
づき詳細に説明する。 Preferred embodiments of this invention will be described in detail below with reference to the accompanying drawings.

第２図および第３図において符号Ｐは試料分注
ピペツト（以下、ピペツトという。）を示し、こ
のピペツトＰは試料管４と反応管５と洗浄槽２と
の間をほぼ水平移動可能に配設されており、かつ
上記洗浄槽２、試料管４及び反応管５内に挿脱可
能に上下動すべく保持されている。 In FIGS. 2 and 3, the symbol P indicates a sample dispensing pipette (hereinafter referred to as a pipette), and this pipette P is arranged to be able to move almost horizontally between the sample tube 4, reaction tube 5, and washing tank 2. It is held so that it can be inserted into and removed from the cleaning tank 2, sample tube 4, and reaction tube 5 so as to move up and down.

そして、上記洗浄槽２内には洗浄水６が収納さ
れており、この洗浄水６は常時流入流出して一定
量を保持している。この洗浄水６内には一対の保
持平板７，７が対面した状態で浸漬されて洗浄槽
２の底面に固着されている。 Washing water 6 is stored in the washing tank 2, and this washing water 6 always flows in and out to maintain a constant amount. A pair of holding flat plates 7, 7 are immersed in the cleaning water 6 while facing each other and are fixed to the bottom surface of the cleaning tank 2.

そして、この保持平板７，７の相対抗面には、
夫々毛足の長い洗浄毛体８が多数密度濃く植設さ
れている。 And, on the opposing surfaces of the holding flat plates 7, 7,
A large number of cleaning bristles 8 each having long bristles are densely planted.

すなわち、この洗浄毛体８は、ピペツトＰの挿
脱方向と直交する方向に配設され洗浄水６中に浸
漬している。尚第３図中９は給水口、１０は排水
口を示す。 That is, the cleaning bristles 8 are disposed in a direction perpendicular to the direction in which the pipette P is inserted and removed, and are immersed in the cleaning water 6. In FIG. 3, 9 indicates a water supply port, and 10 indicates a drain port.

また、上記ピペツトＰの外表面は高精度の平滑
仕上げ加工が施こされている。 Further, the outer surface of the pipette P has been subjected to a highly precise smooth finishing process.

それ故、今、試料管４より試料を吸引し、反応
管５に上記試料を供給したピペツトＰは、洗浄槽
２の上部より降動して洗浄水６内に挿入される。 Therefore, the pipette P, which has now aspirated the sample from the sample tube 4 and supplied the sample to the reaction tube 5, is lowered from the upper part of the washing tank 2 and inserted into the washing water 6.

この時、ピペツトＰの表面に付着した試料は、
洗浄毛体８内を通過するに従い多数の洗浄毛体８
により洗い落とされる。この場合、ピペツトＰの
表面を洗浄するには洗浄毛体８であるので、ピペ
ツトＰの表面に傷がつくことはない。 At this time, the sample attached to the surface of pipette P is
A large number of cleaning hair bodies 8 pass through the cleaning hair body 8.
washed away by In this case, since the cleaning bristles 8 are used to clean the surface of the pipette P, the surface of the pipette P will not be damaged.

この後、ピペツトＰは上昇するが、この場合洗
浄槽２より脱したピペツトＰの表面は高精度の平
滑面であるので水滴が付着することなく洗浄槽２
内に落下する。ピペツトＰが多数本密に存するの
で、ピペツトとピペツトとの間の洗浄液持ち込み
を防止するため、表面に洗浄毛体８を多数植設し
た一対の保持体７を夫々対面させて、かつ洗浄槽
２内外で昇降可能に配設し、上記洗浄毛体８を上
記複数のピペツト挿脱方向と直交する方向に配設
し、上記複数のピペツトの表面を上記洗浄毛体８
で洗浄するように構成する。 After this, the pipette P rises, but in this case, the surface of the pipette P that has come out of the cleaning tank 2 is a highly precise smooth surface, so no water droplets adhere to the surface of the pipette P.
fall inside. Since a large number of pipettes P are closely spaced, in order to prevent cleaning liquid from entering between the pipettes, a pair of holders 7 each having a large number of cleaning bristles 8 implanted on their surfaces are placed facing each other, and the cleaning tank 2 The cleaning bristles 8 are disposed in a direction perpendicular to the direction of insertion and removal of the plurality of pipettes, and the surfaces of the plurality of pipettes are arranged so as to be movable up and down inside and outside.
Configure to wash with.

それ故、次の試料管４中に洗浄水が混入し試料
を稀釈することもない。 Therefore, there is no possibility that washing water will enter the next sample tube 4 and dilute the sample.

この考案は上述したように、洗浄槽の洗浄液中
に、その表面に多数の洗浄毛体を植設した一対の
保持体を対面させて浸漬し、ピペツト表面に付着
する試料を上記洗浄毛体で完全に洗い落すことが
でき、洗浄後も洗浄液がピペツト表面に付着する
ことがなく、その結果試料が稀釈されることもな
く分析精度を高精度に維持することができ、更に
は構成が簡易であるのでコストも廉価である等の
効果を奏する。 As mentioned above, this device involves immersing a pair of holders, each of which has a large number of cleaning bristles on its surface, facing each other in a cleaning solution in a cleaning tank, and using the cleaning bristles to remove the sample that adheres to the pipette surface. It can be completely washed off, the cleaning solution does not adhere to the pipette surface even after washing, and as a result, the sample is not diluted, making it possible to maintain high analytical accuracy.Furthermore, the structure is simple. Therefore, the cost is low and other effects are achieved.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、従来の自動化学分析装置における試
料分注ピペツト洗浄装置の概略構成説明図、第２
図はこの考案の一実施例に係る自動化学分析装置
における試料分注ピペツト洗浄装置の構成を示す
概略説明図、第３図は要部拡大説明図である。 Ｐ……ピペツト、２……洗浄槽、４……試料
管、５……反応管、６……洗浄水、７……保持
体、８……洗浄毛体。 Fig. 1 is a schematic configuration explanatory diagram of a sample dispensing pipette cleaning device in a conventional automatic chemical analyzer;
The figure is a schematic explanatory view showing the configuration of a sample dispensing pipette cleaning device in an automatic chemical analyzer according to an embodiment of the invention, and FIG. 3 is an enlarged explanatory view of the main part. P... Pipette, 2... Washing tank, 4... Sample tube, 5... Reaction tube, 6... Washing water, 7... Holder, 8... Washing capillary body.

Claims (1)

【実用新案登録請求の範囲】 試料管と反応管と洗浄槽との間をほぼ水平方向
に移動することができ、かつ上記試料管、上記反
応管又は上記洗浄槽内に挿脱可能に上下動できる
よう保持され複数本密に配列された試料分注ピペ
ツトの洗浄装置において、 上記洗浄槽内の洗浄液中に、その表面に洗浄毛
体を多数植設した一対の保持体を夫々対面させて
かつ洗浄槽内外で昇降可能に配設し、上記洗浄毛
体を上記複数のピペツト挿脱方向と直交する方向
に配設し、上記複数のピペツトの表面を上記洗浄
毛体で洗浄するように構成してなることを特徴と
する自動化学分析装置における試料分注ピペツト
洗浄装置。[Claims for Utility Model Registration] A device that can be moved approximately horizontally between the sample tube, reaction tube, and cleaning tank, and that can be moved up and down so that it can be inserted into and removed from the sample tube, reaction tube, or cleaning tank. In a washing device for a plurality of sample dispensing pipettes, which are held in a manner that allows the pipettes to move freely and are closely arranged, a pair of holders each having a large number of washing bristles implanted on their surfaces are placed facing each other in the washing liquid in the washing tank. The cleaning bristles are arranged so as to be movable up and down inside and outside the cleaning tank, and the cleaning bristles are arranged in a direction perpendicular to the direction of insertion and removal of the plurality of pipettes, and the surfaces of the plurality of pipettes are cleaned with the cleaning bristles. A sample dispensing pipette cleaning device for an automatic chemical analyzer, which is characterized by: