JPH02164371A - Automatically measuring blood collecting device - Google Patents
Automatically measuring blood collecting deviceInfo
- Publication number
- JPH02164371A JPH02164371A JP63321670A JP32167088A JPH02164371A JP H02164371 A JPH02164371 A JP H02164371A JP 63321670 A JP63321670 A JP 63321670A JP 32167088 A JP32167088 A JP 32167088A JP H02164371 A JPH02164371 A JP H02164371A
- Authority
- JP
- Japan
- Prior art keywords
- blood
- bag
- blood bag
- weight
- press
- 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.)
- Granted
Links
- 210000004369 blood Anatomy 0.000 title claims abstract description 109
- 239000008280 blood Substances 0.000 title claims abstract description 108
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000010241 blood sampling Methods 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 abstract description 5
- 238000013019 agitation Methods 0.000 abstract description 2
- 230000002429 anti-coagulating effect Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 13
- 238000007906 compression Methods 0.000 description 13
- 239000003146 anticoagulant agent Substances 0.000 description 6
- 229940127219 anticoagulant drug Drugs 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000600 sorbitol Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000023555 blood coagulation Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- External Artificial Organs (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、供血者より血液バッグ内に血液を所定量採取
する際に使用する定量採血装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a quantitative blood sampling device used to collect a predetermined amount of blood from a blood donor into a blood bag.
さらに詳しくは、血液バッグの重量を連続的に測定する
ことによって採血量が所定の量に達したことを感知し、
採血を終了するようにした装置に関する。More specifically, by continuously measuring the weight of the blood bag, it is sensed that the amount of blood collected has reached a predetermined amount;
The present invention relates to a device that completes blood collection.
（従来の技術〕
献血などによる採血においては、通常は血液バッグに２
００−あるいは４００−の血液を採取するが、供血者の
安全のために採血量は正確に管理されなければならない
、そこで従来は、血液バッグの重■をバネ秤で測定した
り、血液バッグが膨らんで所定の厚さになったときにそ
れを感知して採血を終了するようにした装置が使用され
てきた。しかし、バネ秤を使用する方法は操作が完全に
手動になるために多人数の採血には不適当であり、また
血液バッグの膨らみを感知する装置は、精度が悪いとい
う問題があった。(Prior art) When collecting blood from blood donations, etc., two blood bags are usually used.
00- or 400- blood is collected, but the amount of blood collected must be accurately controlled for the safety of the donor.Therefore, in the past, the weight of the blood bag was measured with a spring scale, or the weight of the blood bag was Devices have been used that sense when the balloon inflates to a predetermined thickness and stops blood collection. However, the method using a spring scale requires completely manual operation, making it unsuitable for collecting blood from a large number of people, and the device that detects the swelling of a blood bag has a problem of poor accuracy.
そこで本発明者らはこのような問題点を解消するために
、血液の重量を測定することによって自動的に所定量の
採血を行うことのできる装置を開発し、特願昭６１−１
６８５６９号（特開昭６３−２３６４４号）として特許
出願した。Therefore, in order to solve these problems, the present inventors developed a device that can automatically collect a predetermined amount of blood by measuring the weight of blood, and filed a patent application in 1983-1.
A patent application was filed as No. 68569 (Japanese Unexamined Patent Publication No. 63-23644).
本発明者らの発明した装置は、従来の装置にくらべて精
度よく且つ自動的に所定量の採血を行うことができる優
れたものであったが、採血した血液が血液バッグ内で凝
固する現象が従来よりも頻繁に発生する問題が発生した
。そこで、この原因について検討した結果、血液バッグ
内に充填されている抗凝固液と採血した血液とが充分に
混合しないことが原因となっていることをつきとめた。The device invented by the present inventors was superior in that it was able to collect a predetermined amount of blood more accurately and automatically than conventional devices, but it suffered from the phenomenon that the collected blood coagulated inside the blood bag. A problem occurred that occurred more frequently than before. As a result of investigating the cause of this problem, we found that the cause was that the anticoagulant solution filled in the blood bag and the collected blood were not sufficiently mixed.
装置には、抗凝固液と血液が混合するように、血液バッ
グの振盪を行う手段が設けられているが、相当に激しい
振盪を行っても混合が不十分であった。The device is equipped with means for shaking the blood bag so that the anticoagulant and blood mix, but even with fairly vigorous shaking, mixing was insufficient.
本発明の目的は、重量測定方式の定量採血装置において
、抗凝固液と血液との混合が良好に行われる装置を提供
することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a gravimetric quantitative blood sampling device that can effectively mix anticoagulant and blood.
本発明者らは種々の検討を行った結果、血液バッグを上
面から圧迫する手段を設けることによって混合が良好に
行われるようになることを見出し、本発明に到達した。As a result of various studies, the inventors of the present invention have discovered that mixing can be performed favorably by providing a means for pressing the blood bag from above, and have arrived at the present invention.
すなわち本発明は、供血者より血液バッグ内に所定量の
血液を採取するための装置であって、血液バッグを水平
に載置する血液バッグ収納部、血液バッグの重量を測定
する重量測定手段、前記血液バッグ収納部を振盪し血液
バッグ内の液を撹拌するための振盪手段、及び採血終了
後血液バッグの採血チューブを閉止するための閉止手段
を備えてなる自動定量採血装置において、さらに血液バ
ッグを少なくとも採血の後期において上面から圧迫する
手段を設けたことを特徴とする自動定量採血装置である
。That is, the present invention is an apparatus for collecting a predetermined amount of blood from a blood donor into a blood bag, which comprises: a blood bag storage section for horizontally placing the blood bag; a weight measuring means for measuring the weight of the blood bag; In the automatic quantitative blood sampling apparatus, the automatic quantitative blood sampling apparatus is provided with a shaking means for shaking the blood bag storage part and stirring the liquid in the blood bag, and a closing means for closing the blood sampling tube of the blood bag after blood sampling is completed, further comprising a blood bag. This automatic quantitative blood sampling device is characterized in that it is provided with a means for compressing the blood from the upper surface at least in the latter stage of blood sampling.
〔作 用］
血液バッグ内には少量の空気が入っているが、本発明者
らが検討した結果ではこの空気が液の撹拌に密接に関係
しており、空気がバッグ内を広く移動すると撹拌が効果
的に行われ、空気の動きが少ないときにはあまり撹拌さ
れない。血液バッグの側面を圧迫しない状態では、バッ
グの中央部が膨らんで空気がその部分に滞留し、振盪し
てもほとんど移動しないので液は撹拌されにくい、これ
に対して、血液バッグの側面を圧迫する手段を設けた本
発明の装置においては、バッグが圧迫によって平らにな
るので空気が移動しやすくなり、その結果バッグ内の液
がよく撹拌される。[Function] There is a small amount of air inside the blood bag, but the inventors' research shows that this air is closely related to stirring the liquid, and when air moves widely inside the bag, stirring occurs. is carried out effectively, and when there is little air movement, there is not much agitation. If you don't press the sides of the blood bag, the center of the bag will expand and the air will stay in that area, and it won't move much even when you shake it, making it difficult to stir the liquid.On the other hand, if you don't press the sides of the blood bag In the device of the present invention, which is provided with a means for doing so, the bag is flattened by compression, making it easier for air to move, and as a result, the liquid in the bag is better agitated.
以下、図面を用いて本発明をさらに具体的に説明する。 Hereinafter, the present invention will be explained in more detail using the drawings.
第１図および第２図に、本発明の定量採血装置の実施例
を示す。第１図は装置の斜視図であり、第２図は断面図
である。図に示すように、装置は本体ｌと血液バッグ収
納部２より構成されている。FIG. 1 and FIG. 2 show an embodiment of the quantitative blood sampling device of the present invention. FIG. 1 is a perspective view of the device, and FIG. 2 is a sectional view. As shown in the figure, the device is composed of a main body 1 and a blood bag storage section 2.
そして、本体１には血液バッグ収納部２を振盪する手段
３と真空ポンプ４が設けられており、血液バッグ収納部
２には、重量測定手段５．血液バッグ保持皿６．血液バ
ッグ圧迫手段７．血液バッグ８の採血チューブ９を閉止
する手段１０などが設けられている。The main body 1 is provided with means 3 for shaking the blood bag storage section 2 and a vacuum pump 4, and the blood bag storage section 2 is provided with weight measuring means 5. Blood bag holding dish6. Blood bag compression means7. Means 10 for closing the blood collection tube 9 of the blood bag 8 and the like are provided.
振盪手段３は、駆動用モータおよびカムなどから構成さ
れており、血液バッグ収納部を周期的に前後（第２図の
矢印方向）に傾けて振盪する。また、真空ポンプ４は、
血液バッグ収納部の内部を採血中に減圧にして採血速度
を高めるためのものである。重量測定手段５は一種の秤
であり、ロードセル方式、電磁式、静電容量式、変動変
圧器式。The shaking means 3 is composed of a drive motor, a cam, etc., and shakes the blood bag storage section by periodically tilting it back and forth (in the direction of the arrow in FIG. 2). In addition, the vacuum pump 4 is
This is to increase the speed of blood collection by reducing the pressure inside the blood bag storage part during blood collection. The weight measuring means 5 is a type of scale, and is of a load cell type, electromagnetic type, capacitance type, or variable transformer type.
磁歪式、光電式、圧電式、放射線式、振動式、ジャイロ
式などの電子秤に採用されている重量測定方式を用いた
ものが好適である。図の実施例では、重量測定手段によ
って血液バッグと血液バッグ保持皿の合計重量が測定さ
れるが、内蔵されたマイクロコンピュータによって血液
バッグ保持皿の重量は自動消去される。また、採血前の
血液バッグの重量も予め入力しておくか採血前に自動測
定して差し引き、正味の血液重量を算出して本体前面パ
ネルの表示部１１に表示する。そして、所定の採血量に
達したならば、制御部（図示せず）より採血チューブ閉
止手段１０を閉止させる信号が出されてチューブが閉止
され、採血は終了する。Preferably, weight measurement methods employed in electronic scales such as magnetostrictive, photoelectric, piezoelectric, radiation, vibration, and gyro scales are used. In the illustrated embodiment, the weight measuring means measures the total weight of the blood bag and the blood bag holding dish, but the built-in microcomputer automatically erases the weight of the blood bag holding dish. In addition, the weight of the blood bag before blood collection may be input in advance or automatically measured and subtracted before blood collection to calculate the net blood weight and display it on the display section 11 on the front panel of the main body. When a predetermined amount of blood is collected, a control unit (not shown) issues a signal to close the blood collection tube closing means 10, the tube is closed, and the blood collection ends.
血液バッグ圧迫手段７は、保持皿６に水平に置かれた血
液バッグの上方側面を圧迫するようになっている。圧迫
手段は、血液バッグの上面ができるだけ平らになるよう
に圧迫するものであるが、採血の初期には圧迫せずに、
バッグがある程度膨張してから圧迫が始まる構造のもの
が好ましい。The blood bag compression means 7 is configured to compress the upper side of the blood bag placed horizontally on the holding tray 6. The compression means compresses the top surface of the blood bag to make it as flat as possible, but do not apply pressure at the beginning of blood collection.
It is preferable to have a structure in which compression begins after the bag has expanded to a certain extent.
その理由は、最初から圧迫するとバッグの縁にバッグ内
の空気が片寄ったままになって、振盪を行ってもほとん
ど移動しない状態になることがあるので、このようなト
ラブルを防ぐためである。なお、採血の初期には血液に
対して抗凝固液の量が相対的に多いので、混合が不十分
でも凝血が起きる恐れは少ない、圧迫の方法は、バネや
ゴムなどの弾性体を使用したもの、磁力を使用したもの
および圧迫部材の重量を利用したものなどがあげられる
が、使用するバッグの容量によってバッグの厚さが異な
るので、それに応じて圧迫するバッグの厚さを変更でき
るようになっているものが好ましい、圧迫部材は、本発
明の目的を達成できるものであれば、硬質板状のものだ
けでなく、軟質の帯状またはシート状のものでもよい。The reason for this is to prevent this kind of trouble, since if you apply pressure from the beginning, the air inside the bag may remain concentrated at the edge of the bag, and it will hardly move even if you shake it. In addition, at the beginning of blood collection, the amount of anticoagulant is relatively large compared to the blood, so there is little risk of blood clotting even if the mixing is insufficient.For compression, use an elastic body such as a spring or rubber. There are methods that use magnetic force, methods that use the weight of a compression member, etc., but since the thickness of the bag varies depending on the capacity of the bag used, it is possible to change the thickness of the bag that is compressed accordingly. The compression member is preferably not only a hard plate-like member but also a soft band-like or sheet-like member, as long as the object of the present invention can be achieved.
図の実施例では、硬質の板が第２図において示す保持皿
の右端に蝶番によって固定されている。In the illustrated embodiment, a rigid plate is hinged to the right end of the holding pan shown in FIG.
図の定量採血装置では、血液バッグ８を保持皿６に置き
、圧迫手段７および採血チューブ閉止手段ｌＯをセット
して血液バッグ収納部の蓋を閉めることによって採血の
準備が完了する。そして、作動ボタンを押すと測定と振
盪が開始され、所定の採血量に達したところで閉止手段
が作動して採血を停止する。In the quantitative blood sampling device shown in the figure, preparation for blood sampling is completed by placing the blood bag 8 on the holding tray 6, setting the compression means 7 and the blood sampling tube closing means IO, and closing the lid of the blood bag storage section. Then, when the activation button is pressed, measurement and shaking are started, and when a predetermined amount of blood is collected, the closing means is activated to stop blood collection.
以下、実験例により本発明の効果を具体的に説明する。Hereinafter, the effects of the present invention will be specifically explained using experimental examples.
（実験例）
採血の後期において、新たに血液バッグに流入してくる
血液と既にバッグ内で抗凝固液と混合した血液とが混合
する状態を模擬するために、２００ｄ採血用の血液バッ
グに２２０ｄのソルビット液を分注し、これを上述した
定量採血装置にセットして、振盪させながら赤く着色し
たソルビット液５−を採血チューブからゆっ（りと注入
して、混合の状態を観察した。なお、振盪は血液バッグ
の傾斜角度が＋７°〜−２０°の範囲で周期２．５秒で
前後に振盪されるように行った。(Experiment example) In the latter stage of blood collection, in order to simulate a state in which blood newly flowing into the blood bag is mixed with blood that has already been mixed with anticoagulant in the bag, a 220-d blood bag for 200-d blood collection was used. The sorbitol solution was dispensed, set in the quantitative blood sampling device described above, and while shaking, red-colored sorbitol solution 5- was slowly injected from the blood sampling tube and the state of mixing was observed. The blood bag was shaken back and forth at a cycle of 2.5 seconds with an inclination angle of +7° to -20°.
その結果、圧迫手段を設けた本発明の装置では、注入終
了後約２分で着色した液はバッグ全体に均一に拡散した
。これに対して、圧迫手段を有していない従来の装置で
同様の実験を行ったところ、１時間振盪しても着色した
液はバッグ全体に広がらなかった。As a result, in the device of the present invention provided with a compression means, the colored liquid was uniformly spread throughout the bag about 2 minutes after the injection was completed. On the other hand, when a similar experiment was conducted using a conventional device without compression means, the colored liquid did not spread throughout the bag even after shaking for one hour.
この結果から、圧迫手段によって液の混合が効果的に行
われるようになることがわかる。This result shows that the compression means effectively mixes the liquid.
本発明の装置を用いて採血を行うと、採血した血液と抗
凝固液とが効率よく混合するので、採血した血液が凝固
するトラブルの発生を低く抑えることができる。また、
本発明の装置は採血量を重量測定方式によって測定する
ので、精度よく所定量の採血を行うことができる。When blood is collected using the device of the present invention, the collected blood and anticoagulant are efficiently mixed, so that the occurrence of troubles such as coagulation of the collected blood can be suppressed. Also,
Since the device of the present invention measures the amount of blood to be collected using a gravimetric method, it is possible to accurately collect a predetermined amount of blood.
第１図は、本発明の定量採血装置の斜視図であり、第２
図は断面図である。
１、装置本体 ２．血液バッグ収納部３、振盪手
段 ４．真空ポンプ
５、重量測定手段 ６．血液バッグ保持皿７、血液バ
ッグ圧迫手段
８、血液バッグ ９．採血チューブ１０、閉止手段FIG. 1 is a perspective view of the quantitative blood sampling device of the present invention;
The figure is a sectional view. 1. Device body 2. Blood bag storage section 3, shaking means 4. Vacuum pump 5, weight measuring means 6. Blood bag holding dish 7, blood bag compression means 8, blood bag 9. Blood collection tube 10, closure means
Claims (1)
の装置であって、血液バッグを水平に載置する血液バッ
グ収納部、血液バッグの重量を測定する重量測定手段、
前記血液バッグ収納部を振盪し血液バッグ内の液を撹拌
するための振盪手段、及び採血終了後血液バッグの採血
チューブを閉止するための閉止手段を備えてなる自動定
量採血装置において、さらに血液バッグを少なくとも採
血の後期において上面から圧迫する手段を設けたことを
特徴とする自動定量採血装置。A device for collecting a predetermined amount of blood from a blood donor into a blood bag, the device comprising: a blood bag storage section on which the blood bag is placed horizontally; a weight measuring means for measuring the weight of the blood bag;
In the automatic quantitative blood sampling apparatus, the automatic quantitative blood sampling apparatus is provided with a shaking means for shaking the blood bag storage part and stirring the liquid in the blood bag, and a closing means for closing the blood sampling tube of the blood bag after blood sampling is completed, further comprising a blood bag. An automatic quantitative blood sampling device, characterized in that it is provided with means for compressing the blood from the upper surface at least in the latter stage of blood sampling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63321670A JP2732271B2 (en) | 1988-12-19 | 1988-12-19 | Automatic blood sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63321670A JP2732271B2 (en) | 1988-12-19 | 1988-12-19 | Automatic blood sampling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02164371A true JPH02164371A (en) | 1990-06-25 |
| JP2732271B2 JP2732271B2 (en) | 1998-03-25 |
Family
ID=18135102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63321670A Expired - Fee Related JP2732271B2 (en) | 1988-12-19 | 1988-12-19 | Automatic blood sampling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2732271B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07116246A (en) * | 1993-10-20 | 1995-05-09 | Nissho Corp | Dissolving device for chemical for dialyzate |
-
1988
- 1988-12-19 JP JP63321670A patent/JP2732271B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07116246A (en) * | 1993-10-20 | 1995-05-09 | Nissho Corp | Dissolving device for chemical for dialyzate |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2732271B2 (en) | 1998-03-25 |
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