JP2000241408A - Blood filter - Google Patents

Blood filter

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Publication number
JP2000241408A
JP2000241408A JP11046633A JP4663399A JP2000241408A JP 2000241408 A JP2000241408 A JP 2000241408A JP 11046633 A JP11046633 A JP 11046633A JP 4663399 A JP4663399 A JP 4663399A JP 2000241408 A JP2000241408 A JP 2000241408A
Authority
JP
Japan
Prior art keywords
blood
filter
filtration
container
chamber
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.)
Pending
Application number
JP11046633A
Other languages
Japanese (ja)
Inventor
Takayoshi Arai
貴喜 新井
Kenichiro Yazawa
建一郎 矢沢
Osamu Seshimoto
修 瀬志本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP11046633A priority Critical patent/JP2000241408A/en
Publication of JP2000241408A publication Critical patent/JP2000241408A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To easily filter a total amount of blood after sampling in a simple structure, by partitioning the inside of a cylindrical vessel having a plug capable of insertion of a needle at an opening end into two cylindrical chambers with a blood filtering material. SOLUTION: In this blood filter, a rubber plug 6 is mounted to one opening end of a polystyrene-made cylindrical vessel 5 and a plate-shaped lid 7 is mounted to the other end, and the cylindrical vessel 5 is partitioned by a blood filtering material 2 into a blood chamber 8 and a filtering liquid chamber 9 whose volumes are 3 ml. The blood filtering material 2 is formed by piling six glass fiber filter sheets and piling one polysulfone film on the filtering liquid chamber 9 side, and it is supported by a polystyrene-made frame 1 melted with the inner wall of the cylindrical vessel 5. When blood is directly sampled from a blood vessel into this blood filter and then the blood filter is put down to open the rear end of a needle 10, air flows into the depressed blood chamber 8 to filter the blood. After the blood filtration, the blood filter is put down to be returned to an original position, the plate-shaped lid 7 is removed, and blood plasma obtained by the filtration is sampled to be used for analysis. Thus, a total amount of the sampled blood can be filtered.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は全血から血漿や血清
試料を調製する際に使用される血液濾過器に関するもの
である。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hemofilter used for preparing a plasma or serum sample from whole blood.

【0002】[0002]

【従来の技術】血液中の構成成分例えば代謝産物、蛋白
質、脂質、電解質、酵素、抗原、抗体などの種類や濃度
の測定は通常全血を遠心分離して得られる血漿または血
清を検体として行われている。ところが、遠心分離は手
間と時間がかかる。特に少数の検体を急いで処理したい
ときや、現場検査などには、電気を動力とし、遠心分離
機を必要とする遠心法は不向きである。そこで、濾過に
より全血から血漿や血清を分離する方法が検討されてき
た。
2. Description of the Related Art The type and concentration of constituents in blood such as metabolites, proteins, lipids, electrolytes, enzymes, antigens and antibodies are usually measured using plasma or serum obtained by centrifuging whole blood. Have been done. However, centrifugation takes time and effort. Especially when it is desired to process a small number of samples in a hurry or on site, the centrifugal method using electric power and requiring a centrifuge is not suitable. Thus, methods for separating plasma and serum from whole blood by filtration have been studied.

【0003】この濾過方法には、ガラス繊維濾紙をカラ
ムに充填し、カラムの一方から全血を注入し、加圧や減
圧を行なって他方から血漿や血清を得るいくつかの方法
が公知化されている(特公昭44−14673号公報、
特開平2−208565号公報、特開平4−20885
6号公報、特公平5−52463号公報等)。
[0003] For this filtration method, several methods have been known in which a column is filled with glass fiber filter paper, whole blood is injected from one side of the column, and pressure or pressure is reduced to obtain plasma or serum from the other side. (Japanese Patent Publication No. 44-14673,
JP-A-2-208565, JP-A-4-20885
No. 6, Japanese Patent Publication No. 5-52463, etc.).

【0004】しかし、全血から濾過により自動分析等に
よる測定に必要な量の血漿や血清を得る方法に関しては
血糖など一部の項目を除いては、いまだ試行の段階にあ
り、広く実用化されるに至っていない。
[0004] However, the method of obtaining the required amount of plasma or serum for measurement by automatic analysis or the like from whole blood by filtration is still in the trial stage except for some items such as blood sugar, and has been put to practical use. Has not been reached.

【0005】そこで、本発明者らは先に、微量な血液で
あっても血漿や血清を効率よく分離しうる血液濾過器と
して、濾材にガラス繊維濾紙と微多孔性膜を組み合わせ
るとともに濾材の血漿出口側にシール部材を設けて濾過
材料の開口面積を狭めた血液濾過器を完成した(特開平
9−196911号公報)。
[0005] Therefore, the present inventors have previously developed a blood filter capable of efficiently separating plasma and serum even from a very small amount of blood by combining a glass fiber filter paper with a microporous membrane as a filter medium and a plasma filter. A blood filter in which the opening area of the filtration material was narrowed by providing a seal member on the outlet side was completed (Japanese Patent Application Laid-Open No. 9-196911).

【0006】また、その吸引側に血漿受槽を設けたもの
も既に開発した(特開平9−276631号公報)。
[0006] Further, a device provided with a plasma receiving tank on the suction side has already been developed (Japanese Patent Application Laid-Open No. 9-276631).

【0007】[0007]

【発明が解決しようとする課題】ところが、これらの血
液濾過器はその下端に装着した吸引ノズルを血液に挿入
して吸引するタイプのものであるため血液を全量濾過す
ることができず、そのため血液を過剰に採血しなければ
ならなかった。また、採血した血液は経時とともに血球
成分が沈降し、そのままでは血球の濃い部分を吸引して
濾過に悪影響を及ぼすので、濾過前に血液を転倒混和し
なければならず、これが煩瑣であった。さらに、血液濾
過器の構造が複雑で高価なものになることも問題であっ
た。
However, since these blood filters are of a type in which a suction nozzle attached to the lower end thereof is inserted into blood and sucked, it is not possible to filter the whole amount of blood. Had to be oversampled. In addition, the blood collected has a blood cell component that sediments with time, and if it is used as it is, a thick portion of the blood cell is aspirated to adversely affect filtration. Therefore, the blood must be inverted and mixed before filtration, which is complicated. Another problem is that the structure of the blood filter becomes complicated and expensive.

【0008】本発明の目的は、簡単な構造で採血後の血
液を容易に全量濾過できる安価な血液濾過器を提供する
ことにある。
[0008] An object of the present invention is to provide an inexpensive blood filter that can easily filter the whole amount of collected blood with a simple structure.

【0009】[0009]

【課題を解決するための手段】本発明者らは、上記課題
を解決するべく鋭意検討の結果、筒状容器である採血管
自体を血液濾過器に使用することを着想した。そして、
これによって、血液濾過器を安価かつ簡単な構造にでき
るばかりでなく、採血した血液は全量濾過が可能である
こと、採血後直ちに濾過ができるので転倒混和が不要で
あること等の数々の利点を見出して本発明を完成するこ
とができた。
Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have conceived of using the blood collection tube itself, which is a cylindrical container, as a blood filter. And
This not only allows the blood filter to be inexpensive and has a simple structure, but also has a number of advantages such as the ability to filter the whole amount of collected blood and the ability to filter immediately after blood collection, eliminating the need for mixing by inversion. It was found that the present invention was completed.

【0010】すなわち、本発明は、筒状容器の開口端に
針挿入可能な栓が装着されており、容器内部は血液濾過
材料で2つの筒状室に仕切られており、容器内部全体が
減圧になっている血液濾過器に関するものである。
That is, according to the present invention, a needle-insertable stopper is attached to the open end of a cylindrical container, the interior of the container is partitioned into two cylindrical chambers by a blood filtration material, and the entire interior of the container is decompressed. The present invention relates to a hemofilter which is described as follows.

【0011】[0011]

【発明の実施の形態】筒状容器は、採血管、すなわち採
血した血液を入れる容器であって、かつ血液濾過を行う
ところでもある。この容器の両端は開口端であって、そ
の一方には針挿通可能な栓が嵌め込まれる。容器の他端
は栓又は蓋が装着される。
DESCRIPTION OF THE PREFERRED EMBODIMENTS A cylindrical container is a blood collection tube, that is, a container for storing collected blood, and also performs blood filtration. Both ends of the container are open ends, one of which is fitted with a plug that can be inserted with a needle. The other end of the container is fitted with a stopper or lid.

【0012】容器の材質は、血液に影響を与えず、かつ
相当程度硬さを有し、しかも外部から見えるよう透明で
あるものが好ましい。具体例としては、ガラスのほか、
各種プラスチック、例えば、ポリメタアクリル酸エステ
ル、ポリエチレン、ポリプロピレン、ポリエステル、ナ
イロン、ポリカーボネート等が好ましい。
The material of the container is preferably one which does not affect blood, has a considerable degree of hardness, and is transparent so that it can be seen from the outside. Specific examples include glass,
Various plastics, for example, polymethacrylate, polyethylene, polypropylene, polyester, nylon, polycarbonate and the like are preferable.

【0013】また、ある程度の肉厚を有したシリコンゴ
ム等の管も可能である。
A tube made of silicon rubber or the like having a certain thickness is also possible.

【0014】栓は針挿通可能であるものであり、天然ゴ
ム、合成ゴム、シリコンゴム等よりなる各種ゴム栓や軟
質プラスチック等を使用できる。この栓は、使用時まで
容器内部の減圧状態を維持し、かつこの栓を通じて血液
を容器内に注入する際にも注入した血液によって血液濾
過材料で仕切られた他側の室を遮断してその減圧状態を
維持できるものを用いる。
The stopper can be inserted through a needle, and various rubber stoppers made of natural rubber, synthetic rubber, silicon rubber, etc., and soft plastics can be used. This stopper keeps the depressurized state inside the container until use, and when injecting blood into the container through the stopper, the blood on the other side is cut off by the injected blood to block the chamber on the other side. Use a material capable of maintaining a reduced pressure.

【0015】容器の他端に装着される栓や蓋は使用時ま
で容器内部の減圧状態を維持できるものを用いればよ
い。この栓や蓋は血液濾過後そこから濾過液である血漿
や血清を取り出し、そのため着脱が容易であることが好
ましい。一方、血漿や血清をシリンジ等で引抜いて取り
出すこともでき、その場合、栓や蓋は針の挿通が可能で
あれば着脱性は問わない。この針の挿通は瞬時に減圧状
態を破壊するものであってもよい。
The stopper or lid attached to the other end of the container may be one that can maintain the reduced pressure inside the container until use. It is preferable that the plug and the lid take out the filtrate, plasma and serum, from the blood filter after the blood filtration, so that it can be easily attached and detached. On the other hand, plasma or serum can be pulled out and taken out with a syringe or the like. In this case, the plug and the lid may have any detachability as long as a needle can be inserted therethrough. This insertion of the needle may instantaneously destroy the reduced pressure state.

【0016】栓や蓋を装着した後には容器内部の減圧状
態を維持するために容器の開口端周縁部、必要によりさ
らに栓や蓋全体にシール材を塗着してもよい。このシー
ル材はロウその他各種のものを使用できる。
After the stopper or lid is attached, a sealing material may be applied to the periphery of the open end of the container and, if necessary, the entire stopper or lid in order to maintain the reduced pressure inside the container. As this sealing material, a wax or other various materials can be used.

【0017】容器の容積は0.5〜20ml程度、通常
2〜10ml程度あればよい。容器の内径は2〜25m
mφ程度が適当である。
The volume of the container may be about 0.5 to 20 ml, usually about 2 to 10 ml. The inner diameter of the container is 2 to 25m
About mφ is appropriate.

【0018】この筒状容器には市販の採血管を利用する
ことも可能である。
A commercially available blood collection tube can be used for this cylindrical container.

【0019】容器内の圧力は血液濾過の際に必要なスペ
ースを確保できるよう減圧されている必要があり、0.
1atm程度以下、特に0.05atm程度以下にされ
ていることが好ましい。
The pressure in the container must be reduced so that a space required for blood filtration can be secured.
It is preferable that the thickness be about 1 atm or less, particularly about 0.05 atm or less.

【0020】血液濾過材料の種類は問わないが、本発明
の濾過材料では、その表面のみで血球をトラップするい
わゆる表面濾過材料ではなく、ガラス繊維濾紙等の厚さ
方向に浸透するに従って、初めは大きな血球成分、後に
は小さな血球成分と徐々に空隙構造にからめ、厚さ方向
に全長にわたって血球を留め除去していく、いわゆる体
積濾過材料によるものが使用される。好ましいものはガ
ラス繊維濾紙等であり、ガラス繊維濾紙に微多孔性膜を
組み合わせたものが特に好ましい。
Although the type of blood filtration material is not limited, the filtration material of the present invention is not a so-called surface filtration material that traps blood cells only on its surface, but initially penetrates in the thickness direction of glass fiber filter paper or the like. A so-called volume filtration material is used, which gradually entraps a large blood cell component and later a small blood cell component in a void structure, and retains and removes blood cells over the entire length in the thickness direction. Preferred are glass fiber filter paper and the like, and a combination of a glass fiber filter paper and a microporous membrane is particularly preferred.

【0021】ガラス繊維濾紙は密度が0.02〜0.5
程度、好ましくは0.03〜0.2程度、特に好ましく
は0.05〜0.13程度で、保留粒子径が0.6〜9μ
m程度、特に1〜5μm程度のものが好ましい。ガラス
繊維の表面を、特開平2−208565号公報、同4−
208856号公報に記載された様な方法で、親水性高
分子で処理することによって濾過をより速やかに円滑に
行なうことができる。また、ガラス繊維の表面をレクチ
ンで処理することもできる。
The glass fiber filter has a density of 0.02 to 0.5.
Degree, preferably about 0.03 to 0.2, particularly preferably about 0.05 to 0.13, and the retained particle diameter is 0.6 to 9 μm.
m, particularly preferably about 1 to 5 μm. The surface of the glass fiber is described in JP-A-2-208565,
By treating with a hydrophilic polymer by the method described in JP-A-208856, filtration can be performed more quickly and smoothly. Further, the surface of the glass fiber can be treated with lectin.

【0022】表面を親水化されており血球分離能を有す
る微多孔性膜は、実質的に分析値に影響を与える程には
溶血することなく、全血から血球と血漿を特異的に分離
するものである。この微多孔性膜は孔径がガラス繊維濾
紙の保留粒子径より小さくかつ0.2μm以上、好まし
くは0.3〜5μm程度、より好ましくは0.5〜3μ
m程度のものが適当である。また、空隙率は高いものが
好ましく、具体的には、空隙率が約40%から約95
%、好ましくは約50%から約95%、さらに好ましく
は約70%から約95%の範囲のものが適当である。微
多孔性膜の例としてはポリスルホン膜、弗素含有ポリマ
ー膜等がある。
The microporous membrane having a hydrophilic surface and capable of separating blood cells specifically separates blood cells and plasma from whole blood without substantially hemolyzing to affect the analytical value. Things. This microporous membrane has a pore size smaller than the retained particle size of the glass fiber filter paper and 0.2 μm or more, preferably about 0.3 to 5 μm, more preferably 0.5 to 3 μm.
m is appropriate. Further, the porosity is preferably high, and specifically, the porosity is about 40% to about 95%.
%, Preferably from about 50% to about 95%, more preferably from about 70% to about 95%. Examples of the microporous membrane include a polysulfone membrane and a fluorine-containing polymer membrane.

【0023】好ましい微多孔性膜はポリスルホン膜、酢
酸セルローズ膜等であり、特に好ましいのはポリスルホ
ン膜である。本発明の血液濾過材料においてはガラス繊
維濾紙が血液側に配置され、微多孔性膜が濾過液側に配
置される。最も好ましい材料は血液側からガラス繊維濾
紙、ポリスルホン膜をこの順に積層した積層体である。
Preferred microporous membranes are polysulfone membranes and cellulose acetate membranes, and particularly preferred are polysulfone membranes. In the blood filtration material of the present invention, the glass fiber filter paper is disposed on the blood side, and the microporous membrane is disposed on the filtrate side. The most preferable material is a laminate in which a glass fiber filter paper and a polysulfone membrane are laminated in this order from the blood side.

【0024】本発明で用いられる濾過材料は特開昭62
−138756〜8号公報、特開平2−105043号
公報、特開平3−16651号公報等に開示された方法
に従って各層を部分的に配置された接着剤で接着して一
体化することができる。
The filtration material used in the present invention is disclosed in
According to the methods disclosed in JP-A-138756-8, JP-A-2-105043, JP-A-3-16651, etc., each layer can be integrated by bonding with a partially arranged adhesive.

【0025】ガラス繊維濾紙層の厚さは、回収すべき血
漿や血清の量とガラス繊維濾紙の密度(空隙率)及び面積
から定められる。分析を乾式分析素子を用いて複数項目
行なう場合の血漿や血清の必要量は100〜500μl
であり、ガラス繊維濾紙の密度が0.02〜0.2程
度、面積が0.03〜5cm2程度が実用的である。こ
の場合ガラス繊維濾紙層の厚さは1〜100mm程度、
好ましくは2〜50mm程度である。このガラス繊維濾
紙は複数枚、例えば2〜100枚程度、好ましくは3〜
50枚程度を積層して上記厚さとすることができる。
The thickness of the glass fiber filter layer is determined by the amount of plasma or serum to be collected and the density (porosity) and area of the glass fiber filter paper. When performing multiple analysis using a dry analytical element, the required amount of plasma or serum is 100 to 500 μl.
It is practical that the glass fiber filter paper has a density of about 0.02 to 0.2 and an area of about 0.03 to 5 cm 2 . In this case, the thickness of the glass fiber filter layer is about 1 to 100 mm,
It is preferably about 2 to 50 mm. This glass fiber filter paper has a plurality of sheets, for example, about 2 to 100 sheets, preferably 3 to
The above thickness can be obtained by laminating about 50 sheets.

【0026】微多孔性膜の厚さは0.05〜0.5mm
程度、特に0.1〜0.3mm程度でよく、通常は1枚
の微多孔性膜を用いればよい。しかしながら、必要によ
り複数枚を用いることもできる。
The thickness of the microporous membrane is 0.05 to 0.5 mm
The thickness may be about 0.1 to 0.3 mm, and usually one microporous membrane may be used. However, a plurality of sheets can be used if necessary.

【0027】血液濾過材料は筒状容器内に固定され、通
常は筒状容器の軸と直角方向の断面形状と同一あるいは
それよりやや小さい相似形のディスク状、あるいは皿状
をしている。
The blood filtration material is fixed in a cylindrical container, and usually has a disk shape or a dish shape similar to or slightly smaller than the cross-sectional shape in a direction perpendicular to the axis of the cylindrical container.

【0028】血液濾過材料単独では、筒状容器内壁と接
する周縁部から血球が漏出しやすく、また、濾過を行う
際に変形しやすいので、通常は血液濾過材料の補強手段
が必要である。この補強手段としては、血液濾過材料の
周縁部に樹脂を含浸させる等の手段もとりうるが、枠体
を併用することが好ましい。
When the blood filtration material is used alone, the blood cells easily leak from the peripheral portion in contact with the inner wall of the cylindrical container, and are easily deformed at the time of filtration. Therefore, a reinforcing means for the blood filtration material is usually required. As the reinforcing means, means such as impregnating the peripheral portion of the blood filtration material with a resin may be used, but it is preferable to use a frame together.

【0029】枠体の基本形状は環であり、この環は丸
棒、角棒、板等で形成される。断面形状でいえば、円
形、楕円形、4角形、短冊形、台形、L形、コ字形等で
あり、血液濾過材料と接する角部は丸めておくことが好
ましい。環は血球の漏出が起こらない範囲で断点があっ
てもよい。環の内側には、必要により血液濾過材料の上
面を抑止する部材、例えば抑止杆を格子状、放射状等に
設けたり、ネットを張ったり、打抜穴を全体として開口
面積が大きくなるように設けた板を張ったり、抑止突起
を設けたりして濾過の際に血液濾過材料が湾曲しないよ
うにすることができる。
The basic shape of the frame is a ring, which is formed by a round bar, a square bar, a plate or the like. The cross-sectional shape is a circle, an ellipse, a quadrangle, a strip, a trapezoid, an L-shape, a U-shape, or the like, and it is preferable that the corner in contact with the blood filtration material is rounded. The annulus may have breaks to the extent that blood cell leakage does not occur. Inside the ring, if necessary, a member for suppressing the upper surface of the blood filtration material, for example, a restraining bar is provided in a lattice shape, a radial shape, or the like, a net is provided, and a punched hole is provided so that the opening area becomes large as a whole. It is possible to prevent the blood filtration material from being curved at the time of filtration by stretching a plate or providing a suppression projection.

【0030】この枠体は、血液濾過材料の周縁を容器の
内壁に押し付けて血液濾過材料の周縁部を密接させる形
態でもよく、あるいは枠体自体の周縁部を筒状部内壁に
密接させる形態でもよい。
This frame may be in a form in which the peripheral edge of the blood filtration material is pressed against the inner wall of the container to make the peripheral edge of the blood filtration material closely contact with the inner wall of the cylindrical part. Good.

【0031】前者の場合、血液濾過材料の一部又は全部
の層を皿状として枠体をその凹所に押し込んで周縁部を
外側に、すなわち筒状容器内壁に押し付けてもよく、あ
るいは血液濾過材料の一部又は全部の層を容器の筒状部
内径より大径としてこれを筒状容器に押し込むことによ
って皿状に折り曲げて周縁部を容器内壁に押し付けても
よい。いずれにしてもこの皿状にされる層より外側にも
血液濾過材料の層がある場合には、それを散点状に接着
するなどして離脱しないようにしておく。枠体は血液濾
過材料に接着させてもさせなくてもよい。しかしなが
ら、少なくとも枠体の周縁部には血液濾過材料を接着さ
せておくことが好ましい。
In the former case, a part or all of the layer of the blood filtration material may be dish-shaped, and the frame may be pushed into the recess so that the peripheral portion is pressed outward, that is, against the inner wall of the cylindrical container. A part or all of the layer of the material may have a diameter larger than the inner diameter of the cylindrical portion of the container, and may be pressed into the cylindrical container to be bent into a dish shape and the peripheral portion may be pressed against the inner wall of the container. In any case, if there is a layer of the blood filtration material outside the dished layer, it is adhered in a scattered manner so as not to be detached. The frame may or may not be adhered to the blood filtration material. However, it is preferable that a blood filtration material is adhered to at least the peripheral portion of the frame.

【0032】前者の例を図2(イ)〜(ニ)に示す。図2
(イ)の例の枠体1は丸棒のリングであり、血液濾過材
料2の周縁部をおさえている。血液濾過材料2は複数枚
のガラス繊維濾紙21と1枚の微多孔性膜22からなっ
ている。最下層のガラス繊維濾紙21と微多孔性膜22
が筒状容器(図示されていない。)の内径より大径にさ
れ、枠体1が押し込まれることによってこれらが上方に
折り曲げられて筒状容器内壁に密接し所定位置に固定さ
れている。
FIGS. 2A to 2D show the former example. FIG.
The frame 1 in the example of (a) is a ring of a round bar, and holds down the periphery of the blood filtration material 2. The blood filtration material 2 is composed of a plurality of glass fiber filter papers 21 and one microporous membrane 22. Lowermost glass fiber filter paper 21 and microporous membrane 22
Are made larger in diameter than the inner diameter of the cylindrical container (not shown), and when the frame body 1 is pushed in, they are bent upward, closely contact the inner wall of the cylindrical container, and are fixed at a predetermined position.

【0033】図2(ロ)の例の枠体1は平板のリングであ
る。血液濾過材料2のうち最上層のガラス繊維濾紙21
と微多孔性膜22が筒状容器の内径より大径にされて折
り曲げられ、所定位置に固定されている。下側のガラス
繊維濾紙21は最上層のガラス繊維濾紙に散点状に接着
されている。
The frame 1 in the example of FIG. 2B is a flat ring. The uppermost glass fiber filter paper 21 of the blood filtration material 2
The microporous membrane 22 is bent to have a diameter larger than the inner diameter of the cylindrical container, and is fixed at a predetermined position. The lower glass fiber filter paper 21 is bonded to the uppermost glass fiber filter paper in a scattered manner.

【0034】図2(ハ)の例の枠体1は断面L字形のリン
グであり、リングの内側開口には十字状に抑止杆3が設
けられている。
The frame 1 in the example of FIG. 2C is a ring having an L-shaped cross section, and a restraining rod 3 is provided in a cross shape at the inner opening of the ring.

【0035】図2(ニ)の例の枠体1は逆皿状をしていて
天面には開口面積の大きい穴4が複数設けられている。
天面の処処からは下方に抑止突起3が形成されている。
The frame 1 in the example of FIG. 2D has an inverted dish shape, and a plurality of holes 4 having a large opening area are provided on the top surface.
Inhibition projections 3 are formed below the top surface.

【0036】後者の場合、枠体は、筒状部内壁に密接し
て血球の漏出を阻止する部分と、血液濾過材料を支持す
る部分とを有し、血液濾過材料と枠体の間から血球が漏
出しない構造になっている。枠体は筒状容器内壁に固定
されるが、枠体と容器内壁との間隙から血球が漏出しな
いよう枠体外周面を容器内壁に融着あるいは接着してお
くのがよい。血液濾過材料の支持は血液濾過材料の周縁
を抱持あるいは掴持したり、接着したりして行う。枠体
と血液濾過材料の間に隙間があって血球がそこを通過す
るおそれがあるときは、シール材を充填したり、血液濾
過材料を枠体に接着したりして隙間をなくすようにす
る。しかしながら、血液濾過材料を隙間を生じないよう
裁断することが最も簡便である。
In the latter case, the frame has a portion that is in close contact with the inner wall of the cylindrical portion to prevent blood cells from leaking out and a portion that supports the blood filtration material. Has a structure that does not leak. The frame is fixed to the inner wall of the cylindrical container, but the outer peripheral surface of the frame is preferably fused or bonded to the inner wall of the container so that blood cells do not leak from the gap between the frame and the inner wall of the container. The blood filtration material is supported by holding, gripping, or bonding the periphery of the blood filtration material. When there is a gap between the frame and the blood filtration material and blood cells may pass through it, fill the sealing material or glue the blood filtration material to the frame to eliminate the gap . However, it is most convenient to cut the blood filtration material so as not to create gaps.

【0037】後者の例を図2(ホ)〜(ト)に示す。図2
(ホ)の例の枠体1は溝形材でリングを形成しており、そ
の上下の内フランジ間に血液濾過材料を抱持している。
FIGS. 2E to 2G show the latter example. FIG.
The frame 1 in the example of (e) forms a ring with a channel, and holds the blood filtration material between the upper and lower inner flanges.

【0038】図2(ヘ)の例の枠体1は断面逆L字形のリ
ングであり、その下端縁からは数個所爪11が内方に突
設され、これで血液濾過材料を支持している。また、枠
体1上部には十字状に抑止材3が設けられている。
The frame 1 in the example of FIG. 2 (f) is a ring having an inverted L-shaped cross section, and several nails 11 are protruded inward from the lower end edge thereof, thereby supporting the blood filtering material. I have. In addition, a restraining material 3 is provided in a cross shape on the upper portion of the frame 1.

【0039】図2(ト)の例の枠体1は断面逆L字形のリ
ングの内側に逆皿部を連設したものである。逆皿部の天
面には開口面積の大きい穴4が複数設けられ、天面の処
処からは下方に抑止突起3が形成されている。
The frame 1 of the example shown in FIG. 2 (g) has an inverted dish portion continuously provided inside a ring having an inverted L-shaped cross section. A plurality of holes 4 having a large opening area are provided on the top surface of the inverted plate portion, and the suppression protrusion 3 is formed below the top surface.

【0040】枠体の材質は、血液に影響を与えず、相当
程度強度を有するものがよく、ステンレス、アルミニウ
ム等の金属やフッ素樹脂、ナイロン、ポリエチレン、ポ
リプロピレン等のプラスチック等が好ましい。
The material of the frame preferably has a considerable strength without affecting the blood, and is preferably a metal such as stainless steel or aluminum, or a plastic such as fluorine resin, nylon, polyethylene or polypropylene.

【0041】血液濾過材料は、容器内部を2つの筒状室
に仕切って、一方を血液室他方を濾過液室とする。仕切
る位置、すなわち、血液濾過材料を固定する位置は、一
方が濾過される血液を収容でき、かつ他方が濾過液であ
る血漿や血清を収容できる容積が確保されればよく、通
常は血液室:濾過液室の容積比で10:90〜90:1
0程度、多くは30:70〜85:15程度でよい。
The blood filtering material divides the inside of the container into two cylindrical chambers, one of which is a blood chamber and the other is a filtrate chamber. The partitioning position, that is, the position where the blood filtration material is fixed, is only required to secure a volume capable of storing blood to be filtered on one side and plasma or serum as a filtrate on the other side. 10: 90-90: 1 by volume ratio of filtrate chamber
It may be about 0, often about 30:70 to 85:15.

【0042】血液濾過材料を容器内壁に固定する手段は
接着剤で接着したり、加熱融着したり、あるいは枠体を
押し込むことによる圧接を利用できる。加熱融着は容器
内壁と枠体との間で行うことが好ましい。加熱融着や熱
接着する場合の加熱手段は問わないが、超音波加熱が好
ましい。
As a means for fixing the blood filtering material to the inner wall of the container, it is possible to use adhesive bonding, heat fusion, or press-fitting by pushing the frame. The heat fusion is preferably performed between the inner wall of the container and the frame. Heating means for heat fusion or heat bonding is not limited, but ultrasonic heating is preferred.

【0043】本発明の血液濾過器は使用直前まで内部が
減圧されている必要があり、そのため、必要により血液
濾過器全体を袋や容器に入れて真空密封包装することが
できる。
The inside of the blood filter of the present invention needs to be decompressed until immediately before use. Therefore, if necessary, the entire blood filter can be put in a bag or a container and vacuum-sealed and packaged.

【0044】血液濾過方法としては、採血した採血器の
針を血液室の栓に挿通して血液を血液室に注入する。次
いで、血液室側の減圧を解放すれば圧力差によって血液
室内の血液が濾過され、血漿や血清が濾過液室に流入し
てくる。血液室側の減圧を解放する手段としては、針を
突刺したままシリンジを取外せばよいが、その他の手段
を別途設けることもできる。別の注射針等を突刺すこと
によって減圧を解放してもよい。血液濾過後の血漿や血
清の取出しは、濾過液室側の栓や蓋を取外したり、注射
針を突刺して注射器で抜き取ったりすればよい。
As a blood filtration method, blood is injected into the blood chamber by inserting the needle of the blood collector from which the blood was collected into the stopper of the blood chamber. Next, when the decompression of the blood chamber side is released, the blood in the blood chamber is filtered by the pressure difference, and plasma and serum flow into the filtrate chamber. As means for releasing the reduced pressure on the blood chamber side, the syringe may be removed with the needle pierced, but other means may be provided separately. The reduced pressure may be released by piercing another injection needle or the like. Removal of plasma or serum after blood filtration may be performed by removing the stopper or lid on the filtrate chamber side, or by piercing a syringe needle and extracting with a syringe.

【0045】採血針と血液室に突刺す針をチューブ等で
結びその間を弁、ピンチコック等で閉止できるようにし
ておけば採血器を使用せずに直接血管から血液を血液室
に入れることもできる。これは途中に弁を設けた採血針
の後端を血液室の栓に突刺しても同様である。
If a blood collection needle and a needle piercing the blood chamber are connected with a tube or the like so that the space between them can be closed with a valve or a pinch cock, blood can be directly introduced from the blood vessel into the blood chamber without using a blood collection device. it can. This is the same even if the rear end of the blood collection needle provided with a valve on the way is pierced into the stopper of the blood chamber.

【0046】[0046]

【実施例】本発明の血液濾過器の使用例を図1に示す。
この血液濾過器はポリスチレン製筒状容器5の1方の開
口端にはゴム栓6が、他端には皿状蓋7が装着してあ
る。血液濾過材料2はガラス繊維濾紙6枚を積重ね、そ
の濾過液室側に1枚のポリスルホン膜を重ねたものであ
る。この血液濾過材料を図2(ホ)に示したポリスチレン
製枠体1で支持させ、枠体1は超音波加熱によって筒状
容器の内壁を融着させている。血液室8の容積は3m
l、濾過室9の容積は3mlである。
FIG. 1 shows an example of use of the blood filter of the present invention.
In this hemofilter, a rubber stopper 6 is attached to one open end of a cylindrical container 5 made of polystyrene, and a dish-shaped lid 7 is attached to the other end. The blood filtration material 2 is obtained by stacking six glass fiber filter papers and stacking one polysulfone membrane on the filtrate chamber side. This blood filtration material is supported by a polystyrene frame 1 shown in FIG. 2 (e), and the frame 1 has the inner wall of the cylindrical container fused by ultrasonic heating. The volume of the blood chamber 8 is 3 m
l, the volume of the filtration chamber 9 is 3 ml.

【0047】この血液濾過器に、図1左端に示すように
血管から直接血液を採血した。採血の終わった状態を図
1の左から2番目に示す。そこで、図1の左から3番目
に示すように血液濾過器を倒置し、針10の後端を開放
する。そうすると、血液室8内に空気が流入して血液濾
過が行われる。血液濾過終了後、血液濾過器を倒置して
元の位置に戻し、蓋7を取外すと図1の右端に示す状態
になる。そこで、濾過して得られた血漿を採取して分析
等に供する。
Blood was directly collected from the blood vessel into this blood filter as shown in the left end of FIG. The state after blood collection is shown second from the left in FIG. Then, the blood filter is turned over as shown in the third from the left in FIG. 1, and the rear end of the needle 10 is opened. Then, air flows into the blood chamber 8 and blood filtration is performed. After the end of the blood filtration, the blood filter is inverted and returned to its original position, and the lid 7 is removed, as shown in the right end of FIG. Therefore, the plasma obtained by filtration is collected and provided for analysis and the like.

【0048】[0048]

【発明の効果】本発明の血液濾過器は採血した血液全量
を濾過することが可能である。また、採血後直ちに血液
濾過を行えるので濾過前に血液を混和する必要がない。
構造が簡単であり、安価かつ簡便な血液濾過器を提供で
きる。
The blood filter of the present invention is capable of filtering the whole blood collected. In addition, since blood filtration can be performed immediately after blood collection, there is no need to mix blood before filtration.
A simple and inexpensive and simple blood filter can be provided.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 本発明の一実施例である血液濾過器の使用状
態を説明する工程図である。
FIG. 1 is a process diagram illustrating a use state of a blood filter according to an embodiment of the present invention.

【図2】 血液濾過材料を各種の枠体で支持している状
態を示す部分断面図である。
FIG. 2 is a partial cross-sectional view showing a state in which the blood filtration material is supported by various frames.

【符号の説明】[Explanation of symbols]

1………枠体 11…爪 12…周リブ 2………血液濾過材料 21…ガラス繊維濾紙 22…微多孔性膜 3………抑止部材 4………シール材 5………筒状容器 6………ゴム栓 7………皿状蓋 8………血液室 9………濾過液室 10……針 DESCRIPTION OF SYMBOLS 1 ... Frame 11 ... Claw 12 ... Peripheral rib 2 ... Blood filtration material 21 ... Glass fiber filter paper 22 ... Microporous membrane 3 ... Inhibiting member 4 ... Sealing material 5 ... Cylindrical container 6 Rubber stopper 7 Dish lid 8 Blood chamber 9 Filtrate chamber 10 Needle

───────────────────────────────────────────────────── フロントページの続き (72)発明者 瀬志本 修 埼玉県朝霞市泉水三丁目11番46号 富士写 真フイルム株式会社内 Fターム(参考) 2G045 BA10 BB05 CA25 HA14 HB20 JA07  ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Osamu Shishimoto 3-11-46 Izumi, Asaka-shi, Saitama F-term in Fujisha Shin Film Co., Ltd. (reference) 2G045 BA10 BB05 CA25 HA14 HB20 JA07

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 筒状容器の開口端に針挿入可能な栓が装
着されており、容器内部は血液濾過材料で2つの筒状室
に仕切られており、容器内部全体が減圧になっている血
液濾過器
1. A plug capable of inserting a needle is attached to an open end of a cylindrical container, the inside of the container is partitioned into two cylindrical chambers by a blood filtration material, and the entire inside of the container is depressurized. Blood filter
JP11046633A 1999-02-24 1999-02-24 Blood filter Pending JP2000241408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11046633A JP2000241408A (en) 1999-02-24 1999-02-24 Blood filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11046633A JP2000241408A (en) 1999-02-24 1999-02-24 Blood filter

Publications (1)

Publication Number Publication Date
JP2000241408A true JP2000241408A (en) 2000-09-08

Family

ID=12752710

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11046633A Pending JP2000241408A (en) 1999-02-24 1999-02-24 Blood filter

Country Status (1)

Country Link
JP (1) JP2000241408A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004325412A (en) * 2003-04-28 2004-11-18 Sekisui Chem Co Ltd Blood examining container
JP2018008262A (en) * 2016-07-05 2018-01-18 株式会社エフテック Decompressed capsule filter for liquid filtration

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04208856A (en) * 1990-12-03 1992-07-30 Sanwa Kagaku Kenkyusho Co Ltd Method and instrument for separating serum or plasma from whole blood

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04208856A (en) * 1990-12-03 1992-07-30 Sanwa Kagaku Kenkyusho Co Ltd Method and instrument for separating serum or plasma from whole blood

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004325412A (en) * 2003-04-28 2004-11-18 Sekisui Chem Co Ltd Blood examining container
JP2018008262A (en) * 2016-07-05 2018-01-18 株式会社エフテック Decompressed capsule filter for liquid filtration

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