JPH0225658B2 - - Google Patents
Info
- Publication number
- JPH0225658B2 JPH0225658B2 JP14790485A JP14790485A JPH0225658B2 JP H0225658 B2 JPH0225658 B2 JP H0225658B2 JP 14790485 A JP14790485 A JP 14790485A JP 14790485 A JP14790485 A JP 14790485A JP H0225658 B2 JPH0225658 B2 JP H0225658B2
- Authority
- JP
- Japan
- Prior art keywords
- knob
- main body
- shaft
- setter
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 230000000694 effects Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
- Devices For Use In Laboratory Experiments (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は医学、生物学、化学その他の検査、実
験等に使用する新規なマイクロピペツトに関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a novel micropipette used for medical, biological, chemical, and other tests, experiments, and the like.
（従来の技術）
従来のマイクロピペツトには容量可変式のもの
もあるが、例えば検体検査のときなど基準量の２
倍のサンプル採取を行なう必要がある場合、その
都度容量セツトを変更しなければならない。この
ような場合に通常の採取量とその２倍の採取量が
ノブの押圧操作だけでできるものがあれば極めて
効率の良い作業を行なうことができる。しかしな
がらそうしたマイクロピペツトは未だ知られてい
ない。(Prior art) Some conventional micropipettes have a variable capacity type, but for example, when testing a specimen, two or more of the standard volumes are used.
If it is necessary to take twice as many samples, the volume set must be changed each time. In such a case, if there is a device that can collect the normal amount and twice that amount just by pressing the knob, it will be possible to perform extremely efficient work. However, such a micropipette is still unknown.
（技術的課題）
そこで本発明は、別操作で容量セツトを変更す
ることなく、操作ノブの押し量を加減するだけ
で、基準量と、その倍の量等に容量を変えること
ができ、それにより作業性を著しく向上すること
ができるマイクロピペツトの提供を目的とするも
のである。(Technical Problem) Therefore, the present invention makes it possible to change the capacity to the standard amount, double the amount, etc. by simply adjusting the amount by which the operation knob is pressed, without changing the capacity set in a separate operation. The object of the present invention is to provide a micropipette that can significantly improve workability.
（技術的手段）
前記目的を達するため本発明は、本体１の吸引
筒部２に嵌挿するピストン３に軸杆４を設け、そ
の他端に本体外より操作するノブ５を設け、軸杆
４にそれをノブ方向へ付勢するばね６を取付け、
軸杆と同方向に付勢されかつ本体内の適所に係止
して位置決めされる規定板７を軸杆４に挿通・係
止し、規定板の前後の軸杆４にノブ操作量の設定
子８，９を夫々設け、第１の設定子８は軸杆とと
もに移動して規定板７に当接し、第２設定子９は
本体に固定的に設けられ、それに規定板７が当接
することにより吸引量が２段階に設定されるよう
構成したものである。(Technical Means) In order to achieve the above object, the present invention provides a piston 3 that is inserted into the suction tube portion 2 of the main body 1, and a knob 5 that is operated from outside the main body. Attach a spring 6 to bias it toward the knob,
A regulating plate 7 that is biased in the same direction as the shaft rod and is positioned by being locked at a proper place within the main body is inserted into and locked in the shaft rod 4, and the amount of knob operation is set on the shaft rod 4 before and after the regulating plate. elements 8 and 9 are respectively provided, the first setting element 8 moves together with the shaft rod and comes into contact with the regulation plate 7, and the second setting element 9 is fixedly provided on the main body, and the regulation plate 7 abuts against it. The suction amount is set in two stages.
（発明の作用）
本発明のマイクロピペツトは、ノブ５によりピ
ストン３を操作する軸杆４に、本体内に係止して
位置決めされる規定板７を挿通・係止し、その前
後において規定板７に当接する第１の設定子８
と、規定板７が当接する第２の設定子９を設けた
ため、ノブ５の押圧操作により軸杆４のピストン
移動動作は２段階となる。初めのノブ操作の終り
でばね６を蓄圧するから、２段階であることは明
瞭に分りかつ１回のノブ操作で２種の容量の選択
が可能になる。(Function of the Invention) In the micropipette of the present invention, a regulation plate 7 that is fixed and positioned within the main body is inserted into and engaged with the shaft rod 4 for operating the piston 3 by the knob 5, and a regulation plate 7 is inserted and engaged in the shaft rod 4 for operating the piston 3 by the knob 5. A first setter 8 that comes into contact with the plate 7
Since the second setter 9 with which the regulation plate 7 comes into contact is provided, the piston movement of the shaft rod 4 is performed in two stages by the pressing operation of the knob 5. Since pressure is accumulated in the spring 6 at the end of the first knob operation, it is clearly seen that there are two stages, and two types of capacity can be selected with one knob operation.
（実施例）
以下実施例により説明すると、図示のものは、
先端部１１と、中間部１２及び基端部１３の３部
分から成る本体１を有し、その中にピストン軸１
４と、基軸１５の２部分から成る軸杆４を組込み
その先端にピストン３を、また基端にノブ５を設
けている。軸杆４の基軸１５は本体内に突設した
係止部１６の通孔１６ａに挿通され、係止部１６
と係止する規定板７の前後に第１、第２の設定子
８，９を有するので、ノブ操作によりまず第１設
定子８だけが規定板７に当るまで摺動してピスト
ン３を同ストローク移動させ、その後規定板７が
第２設定子９の位置まで摺動しそのストロークだ
けピストン３が移動する２段階操作が可能であ
る。(Example) The following examples will be explained.
It has a main body 1 consisting of three parts: a distal end 11, an intermediate part 12, and a proximal end 13, in which a piston shaft 1 is inserted.
4 and a base shaft 15, a piston 3 is provided at the tip thereof, and a knob 5 is provided at the base end. The base shaft 15 of the shaft 4 is inserted into the through hole 16a of the locking part 16 protruding inside the main body, and the locking part 16 is inserted into the through hole 16a of the locking part 16.
Since there are first and second setters 8 and 9 on the front and rear of the regulating plate 7 that locks the piston 3, by operating the knob, only the first setter 8 slides until it hits the regulating plate 7, and the piston 3 is moved in the same direction. A two-step operation is possible in which the piston 3 is moved by a stroke, then the regulating plate 7 is slid to the position of the second setter 9, and the piston 3 is moved by that stroke.
しかして、１７は規定板７を係止するため軸杆
４に設けた係止突部、１８，１９は第１、第２各
設定子８，９の位置を可変する正、逆各ねじ部
で、各段階の吸引操作により吸引する量を変える
容量可変機構１０を構成する。２０は正ねじ部１
８に螺合する第１設定子８の回り止め突部、２１
はそれが係合する凹部２２を内側に設けた筒体
で、筒体２１の下端は規定板７に一体化され、上
端係止部２３と係合部６間に縮設されたばね２４
によつて規定板７をノブ５の方向へ付勢してい
る。２１ａは筒体２１の回り止めを示す。２５，
２６は第２設定子９を係合下に軸方向へ移動させ
る突条と凹溝、２７は第２設定子９の逆ねじ部１
９と螺合した係止筒、２８はその下端に一体的に
設けた係止片、２７ａは係止筒２７の側面に突設
した案内突起で、この突起２７ａは本体内に設け
た突条１３ａと係合し、ブローアウトに必要なだ
け係止筒２７を移動可能とするものである。 17 is a locking protrusion provided on the shaft rod 4 for locking the regulating plate 7, and 18 and 19 are positive and reverse threaded portions for varying the positions of the first and second setters 8 and 9. This constitutes a variable capacity mechanism 10 that changes the amount of suction according to each stage of suction operation. 20 is the positive thread part 1
8, a rotation preventing protrusion of the first setting element 8, 21
is a cylindrical body provided with a recessed part 22 inside which it engages, the lower end of the cylindrical body 21 is integrated with the regulation plate 7, and a spring 24 is compressed between the upper end locking part 23 and the engaging part 6.
The regulation plate 7 is urged in the direction of the knob 5 by. Reference numeral 21a indicates a rotation stopper for the cylindrical body 21. 25,
26 is a protrusion and groove for moving the second setter 9 in the axial direction while being engaged; 27 is a reverse threaded portion 1 of the second setter 9;
9 is screwed into the locking tube, 28 is a locking piece integrally provided at the lower end of the locking tube, 27a is a guide projection protruding from the side surface of the locking tube 27, and this projection 27a is a protrusion provided inside the main body. 13a, and allows the locking tube 27 to move as much as necessary for blowout.
２９はピストン軸１４の基端に形成され前記係
止片２８と接する衝止片、６ａ，６ｂは２部分か
ら成る軸杆４を付勢する２個のばねで、夫々本体
中間部内の段部１２ａ，１２ｂと上記係止片２
８、衝止片２９間に縮設され、軸杆４全体をノブ
方向へ付勢する。また３０はピストン３に対する
シールリング、３１はそのリング取付けのため本
体先端部１１に設けた取付溝、３２は本体先端部
１１の先端に嵌合した吸引チツプ、また３３は本
体基端部１３の内部に組込んだカウンタリング、
３４はその抑え蓋、３５はカウンタ表示窓で、カ
ウンタはノブ５の回転操作により可変する吸引容
量を表示するもので市販のものが使用できる。３
６は指掛けを示す。 Reference numeral 29 denotes a stopper piece formed at the base end of the piston shaft 14 and in contact with the locking piece 28, and 6a and 6b are two springs that bias the shaft rod 4 consisting of two parts, each of which is attached to a step in the middle part of the main body. 12a, 12b and the locking piece 2
8. It is compressed between the blocking pieces 29 and urges the entire shaft 4 toward the knob. Further, 30 is a seal ring for the piston 3, 31 is a mounting groove provided at the tip end 11 of the main body for attaching the ring, 32 is a suction tip fitted to the tip of the tip 11 of the main body, and 33 is a suction tip of the base end 13 of the main body. Counting incorporated inside,
Reference numeral 34 denotes the holding lid, and 35 denotes a counter display window. The counter displays the suction capacity which can be varied by rotating the knob 5, and a commercially available counter can be used. 3
6 indicates a finger rest.
以上の構成において、ノブ５を押すとピストン
３は第１設定子８が規定板７に当るまでのストロ
ークS1だけ移動し（第７図）、ここで指をノブ５
から離せばサンプルはストロークS1に応じた量だ
け吸引され、再びノブ５を押すと吸引したサンプ
ルを吐出し、規定板７に当接後さらに押すと規定
板７が移動してブローアウトとなる。上記の２倍
のサンプル採取を行なうときは、ノブ操作により
第１設定子８を規定板７に当るまで押下げてか
ら、さらに押すと第１設定子８は規定板７に接し
ている係止段部１７を介して軸杆全体を押下げ、
第２設定子９に規定板７が当接して止まる（第８
図）。規定板７の移動ストロークS2は初めのスト
ロークS1と同じに設定されるので正確に倍量のサ
ンプル採取が可能である。吐出するときは、規定
板７が第２設定子９に接するまで押し下げ、さら
に押すとばね６ａにより第２設定子９と係止片２
８が下がり、ブローアウトとなる。また、ノブ５
を回転させると、両設定子８，９は規定板７を中
心として接近・離間するので、その移動量に応じ
吸引量が変化し、かつ表示窓３６に表示される。
両設定子８，９の移動量は正逆各ねじ部１８，１
９のピツチによつて変わり、同ピツチとすれば全
く同じ分だけ正逆方向へ変化する。 In the above configuration, when the knob 5 is pressed, the piston 3 moves by a stroke S 1 until the first setter 8 hits the regulation plate 7 (Fig.
When released from the knob, the sample is aspirated in an amount corresponding to the stroke S1 , and when the knob 5 is pressed again, the aspirated sample is discharged, and when it comes into contact with the regulation plate 7, when pressed further, the regulation plate 7 moves and blowout occurs. . When sampling twice as many samples as above, press down the first setter 8 by operating the knob until it touches the regulation plate 7, and then push it further to release the first setter 8 from the locking position in contact with the regulation plate 7. Pushing down the entire shaft rod via the stepped portion 17,
The regulation plate 7 comes into contact with the second setter 9 and stops (the eighth
figure). Since the movement stroke S2 of the regulating plate 7 is set to be the same as the initial stroke S1 , it is possible to accurately collect twice the amount of sample. When discharging, push down the regulating plate 7 until it touches the second setter 9, and when you push it further, the second setter 9 and the locking piece 2 are pulled together by the spring 6a.
8 goes down and it's a blowout. Also, knob 5
When the setters 8 and 9 are rotated, they approach and separate from each other around the regulation plate 7, so that the amount of suction changes in accordance with the amount of movement thereof, and is displayed on the display window 36.
The amount of movement of both setters 8 and 9 is the forward and reverse threaded portions 18 and 1.
It changes depending on the pitch of 9, and if the pitch is the same, it will change by exactly the same amount in the forward and reverse directions.
（発明の効果）
従つて本発明によれば、ノブ５を指で押すと、
ノブ５を設けた軸杆４は第１、第２設定子８，９
によつて押圧ストロークが２段階に変わるのでピ
ストン３により吸引される量も変わり、初めのス
トロークによる吸引量を基準吸引容量とすれば、
その倍等の容量の吸引をノブ押圧操作だけで行な
うことができ、従来のように吸引量を変える都度
容量セツトを変更する必要がないため吸引操作及
び吸引作業が非常に容易になり、作業性を著しく
向上することができる効果がある。(Effect of the Invention) Therefore, according to the present invention, when the knob 5 is pressed with a finger,
The shaft rod 4 provided with the knob 5 has first and second setters 8 and 9.
Since the pressing stroke changes into two stages, the amount sucked by the piston 3 also changes, and if the suction amount by the first stroke is taken as the standard suction capacity,
It is possible to suction double the volume by simply pressing the knob, and there is no need to change the volume set each time the suction amount is changed, which makes suction operation and suction work extremely easy, and work efficiency is improved. It has the effect of significantly improving the
図面は本発明に係るマイクロピペツトの１実施
例に関するもので、第１図は縦断面図、第２図乃
至第６図は夫々第１図Ａ−Ａ線乃至Ｅ−Ｅ線の断
面図、第７図乃至第９図は作用を説明する概略図
である。
１……本体、２……吸引筒部、３……ピスト
ン、４……軸杆、５……ノブ、６……ばね、７…
…規定板、８，９……第１、第２設定子、１０…
…容量可変機構。
The drawings relate to one embodiment of the micropipette according to the present invention, and FIG. 1 is a longitudinal cross-sectional view, and FIGS. 2 to 6 are cross-sectional views taken along lines A-A to E-E in FIG. 1, respectively. FIG. 7 to FIG. 9 are schematic diagrams for explaining the operation. DESCRIPTION OF SYMBOLS 1...Main body, 2...Suction cylinder part, 3...Piston, 4...Shaft rod, 5...Knob, 6...Spring, 7...
...Regulation plate, 8, 9...First and second setter, 10...
...Variable capacity mechanism.
Claims (1)
軸杆４を設け、その他端に本体外より操作するノ
ブ５を設け、軸杆４にそれをノブ方向へ付勢する
ばね６を取付け、軸杆と同方向に付勢されかつ本
体内の適所に係止して位置決めされる規定板７を
軸杆４に挿通・係止し、規定板の前後の軸杆４に
ノブ操作量の設定子８，９を夫々設け、第１の設
定子８は軸杆とともに移動して規定板７に当接
し、第２設定子９は本体に固定的に設けられ、そ
れに規定板７が当接することにより吸引量が２段
階に設定されるよう構成したマイクロピペツト。 ２ 各設定子には軸杆と係合乃至螺合して各設定
子を互いに接近・離間する方向へ進退させる容量
可変機構１０を設けた特許請求の範囲第１項記載
のマイクロピペツト。[Claims] 1. A piston 3 that is inserted into the suction cylinder portion 2 of the main body 1 is provided with a shaft 4, a knob 5 that is operated from outside the main body is provided at the other end, and the piston 3 is attached to the shaft 4 in the direction of the knob. Attach the spring 6 that biases the shaft, and insert and lock the regulating plate 7, which is biased in the same direction as the shaft rod and is positioned by locking it at a proper place within the main body, into the shaft rod 4, and the shaft rods before and after the regulating plate are inserted. 4 is provided with setters 8 and 9 for the amount of knob operation, the first setter 8 moves together with the shaft rod and comes into contact with the regulation plate 7, and the second setter 9 is fixedly provided on the main body and A micropipette configured so that the amount of suction can be set in two stages by the contact of the regulating plate 7. 2. The micropipette according to claim 1, wherein each setter is provided with a variable capacity mechanism 10 that engages or screws with a shaft rod and moves the setters toward and away from each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14790485A JPS6211551A (en) | 1985-07-05 | 1985-07-05 | Micropipette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14790485A JPS6211551A (en) | 1985-07-05 | 1985-07-05 | Micropipette |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6211551A JPS6211551A (en) | 1987-01-20 |
| JPH0225658B2 true JPH0225658B2 (en) | 1990-06-05 |
Family
ID=15440758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14790485A Granted JPS6211551A (en) | 1985-07-05 | 1985-07-05 | Micropipette |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6211551A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5502303B2 (en) * | 2008-07-28 | 2014-05-28 | 光陽化成有限会社 | Pipette device |
-
1985
- 1985-07-05 JP JP14790485A patent/JPS6211551A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6211551A (en) | 1987-01-20 |
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