JP4979505B2 - Cleaning device for blood purifier coupler - Google Patents

Cleaning device for blood purifier coupler Download PDF

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JP4979505B2
JP4979505B2 JP2007204223A JP2007204223A JP4979505B2 JP 4979505 B2 JP4979505 B2 JP 4979505B2 JP 2007204223 A JP2007204223 A JP 2007204223A JP 2007204223 A JP2007204223 A JP 2007204223A JP 4979505 B2 JP4979505 B2 JP 4979505B2
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coupler
flow path
adapter
cleaning liquid
inlet
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JP2009039164A (en
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直人 安田
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Toray Medical Co Ltd
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Description

本発明は、血液浄化器用カプラの洗浄装置に関し、とくに、血液浄化器をバイパスさせて設けられる洗浄用アダプタにカプラを接続して該カプラを洗浄するようにした装置における洗浄効果を高めるようにした改良構造に関する。   The present invention relates to a cleaning device for a coupler for a blood purifier, and in particular, to improve the cleaning effect in a device in which the coupler is cleaned by connecting the coupler to a cleaning adapter provided by bypassing the blood purifier. It relates to an improved structure.

血液浄化器、例えば血液透析装置におけるダイアライザには、通常、その入出口側にカプラ方式にて外部回路のチューブが装脱着できるようになっている。そして、血液透析装置においては、透析終了後には、ダイアライザの入出口側接続口に接続されていた透析液給排用カプラが取り外され、洗浄に供されるようになっている。このカプラ部は、その内部が次の透析等に対して汚染源になりやすいことから、また、次に供給される透析液を極力清浄に保つことができるようにする観点から、十分に洗浄される必要がある。カプラの洗浄方式としては、血液浄化器をバイパスさせて洗浄用のアダプタを設けておき、洗浄時には、血液浄化器の入出口側接続口に接続されていたカプラを取り外し、それらをアダプタ入出口側接続口に接続して洗浄液を流すようにした方式が知られている。   In a dialyzer in a blood purifier, for example, a hemodialysis apparatus, a tube of an external circuit can be normally attached to and detached from the inlet / outlet side by a coupler method. In the hemodialysis apparatus, after dialysis is completed, the dialysate supply / discharge coupler connected to the inlet / outlet side connection port of the dialyzer is removed and used for washing. This coupler part is sufficiently washed from the viewpoint that the inside is likely to become a contamination source for the next dialysis and the like, and the dialysate to be supplied next can be kept as clean as possible. There is a need. As a cleaning method of the coupler, a blood purifier is bypassed and a cleaning adapter is provided, and at the time of cleaning, the coupler connected to the inlet / outlet side connection port of the blood purifier is removed, and they are connected to the adapter inlet / outlet side. There is known a system in which a cleaning liquid is made to flow through a connection port.

これまでのカプラ汚染防止策としては、主にカプラの構造、特に液漏れ防止用シール部材の設置位置やシール部材の嵌合構造等の工夫（例えば、特許文献１）や、汚染源とされているＯ−リングを無くすことなどに主眼が置かれていた。   The conventional coupler contamination prevention measures are mainly the structure of the coupler, particularly devices such as the installation position of the liquid leakage prevention seal member and the fitting structure of the seal member (for example, Patent Document 1), and the contamination source. The main focus was on eliminating the O-ring.

しかし、透析液供給装置からカプラまでの配管（主にシリコンチューブで内径が例えば約φ６ｍｍのもの）の流路断面積と、カプラのダイアライザ継手挿着用空洞部（メーカーによって多少の差はあるがほとんどがφ１５ｍｍの空洞部）の流路断面積との差が大きいため（前記の例では約６倍以上）、通常、透析液と同じ流量で設定される洗浄液の流量（一般的には、４００〜６００ｍｌ／分）では、ダイアライザ継手挿着用空洞部において洗浄液の流速が大幅に減少し、洗浄効果を高めるための「乱流」も発生しにくく、ひいては「エアー溜まり」や「洗浄液未接液部」が発生するおそれもあり、充分に望ましい洗浄を行うことができない場合があった。その結果、カプラの洗浄度合の確認や、補充の洗浄作業等が、透析スタッフにとって日々の大きな負担となっている。
特開２００５−４０３９３号公報 However, the channel cross-sectional area of the pipe from the dialysate supply device to the coupler (mainly silicon tube with an inner diameter of about φ6 mm, for example) and the coupler dialyzer fitting insertion cavity (although there are some differences depending on the manufacturer) Since the difference between the flow path cross-sectional area of the hollow portion having a diameter of 15 mm is large (about 6 times or more in the above example), the flow rate of the cleaning liquid (generally, 400 to (600 ml / min), the flow rate of the cleaning liquid is greatly reduced in the cavity where the dialyzer joint is inserted, and “turbulent flow” is less likely to occur to enhance the cleaning effect. In some cases, it may not be possible to perform sufficiently desirable cleaning. As a result, confirmation of the degree of cleaning of the coupler, replenishment cleaning work, and the like are a heavy daily burden for dialysis staff.
JP 2005-40393 A

そこで本発明の課題は、上記カプラの洗浄をより確実により望ましい洗浄形態で行うために、とくに洗浄液が流れる流路の流路断面積に着目して特定の構造を採用することにより、カプラ内部を十分に効果的に洗浄できるようにした血液浄化器用カプラの洗浄装置を提供することにある。   Accordingly, an object of the present invention is to adopt a specific structure by paying particular attention to the cross-sectional area of the flow path through which the cleaning liquid flows in order to perform the cleaning of the coupler in a more desirable and more desirable manner. It is an object of the present invention to provide a cleaning device for a blood purifier coupler that can be cleaned sufficiently effectively.

なお、前記特許文献１には、その図面に、洗浄用アダプタの先端突出部がカプラのダイアライザ継手挿着用空洞部の内部にまで挿入される構造が示されているが、挿入後における流路断面積に関する構造は、以下に説明する本発明に係る構造とは明らかに基本的に異なっている。   In the above-mentioned Patent Document 1, the drawing shows a structure in which the tip protruding portion of the cleaning adapter is inserted into the cavity of the coupler connecting the dialyzer joint. The structure relating to the area is clearly fundamentally different from the structure according to the present invention described below.

上記課題を解決するために、本発明に係る血液浄化器用カプラの洗浄装置は、血液浄化器の入口側および出口側接続口に接続されるカプラを、血液浄化器をバイパスさせて設けられるアダプタの入口側および出口側接続口に接続して洗浄液を流すようにした血液浄化器用カプラの洗浄装置であって、アダプタの入口側および出口側において、前記アダプタが、カプラ内に形成された血液浄化器の接続口挿着用空洞部内に延びるアダプタ延設部を有しており、該アダプタ延設部の外面とカプラの内面との間に流路を画成し、画成された流路を、カプラの洗浄液入口部からアダプタ内に形成された洗浄液流路の入口部に至るまでの流路の一部およびアダプタ内に形成された洗浄液流路の出口部からカプラの洗浄液出口部に至るまでの流路の一部として形成し、かつ、カプラの洗浄液入口部からアダプタ内に形成された洗浄液流路の入口部に至るまでの流路を、全長にわたってカプラの洗浄液入口部に比べ２倍以下の流路断面積を有する流路に形成するとともに、アダプタ内に形成された洗浄液流路の出口部からカプラの洗浄液出口部に至るまでの流路を、全長にわたってカプラの洗浄液出口部に比べ２倍以下の流路断面積を有する流路に形成したことを特徴とするものからなる。 In order to solve the above-described problems, a blood purifier coupler cleaning device according to the present invention is an adapter provided by bypassing a blood purifier with a coupler connected to an inlet side and an outlet side connection port of the blood purifier. A cleaning device for a coupler for a blood purifier, which is connected to an inlet side and an outlet side connection port and allows a cleaning liquid to flow, wherein the adapter is formed in the coupler on the inlet side and the outlet side of the adapter. An adapter extending portion extending into the connecting port insertion cavity portion, and a flow path is defined between an outer surface of the adapter extending portion and an inner surface of the coupler, and the defined flow path is defined as a coupler. A part of the flow path from the cleaning liquid inlet to the inlet of the cleaning liquid flow path formed in the adapter and the flow from the outlet of the cleaning liquid flow path formed in the adapter to the cleaning liquid outlet of the coupler Part of the road and Forming Te, and the flow path up to the inlet of the washing solution flow path formed in the adapter from the cleaning liquid inlet of the coupler, a 2 times or less of the flow path cross-sectional area compared to the cleaning solution inlet of the coupler over the entire length The flow path from the outlet of the cleaning liquid flow path formed in the adapter to the cleaning liquid outlet of the coupler is less than twice as long as the total length of the cleaning liquid outlet of the coupler. It consists of what was formed in the flow path which has an area .

より具体的には、例えば、カプラの洗浄液入口部からアダプタ内に形成された洗浄液流路の入口部に至るまでの流路を、洗浄液の流れ方向に見て、流路断面積がカプラの洗浄液入口部に比べ２倍以下を限度に増加しながら延びる形態、流路断面積がカプラの洗浄液入口部に比べ２倍以下を限度に増加しながら延びる部位と流路断面積が同一にてあるいは減少しながら延びる部位とを有する形態、カプラの洗浄液入口部と同じ流路断面積にて延びる形態、カプラの洗浄液入口部に比べ流路断面積が減少しながら延びる形態のいずれかに形成したことを特徴とするものからなる。   More specifically, for example, when the flow path from the cleaning liquid inlet of the coupler to the inlet of the cleaning liquid flow path formed in the adapter is viewed in the flow direction of the cleaning liquid, the flow path cross-sectional area is the cleaning liquid of the coupler. Form that extends while increasing up to 2 times or less compared to the inlet, the cross-sectional area of the flow path and the section extending while increasing up to 2 times or less compared to the cleaning liquid inlet of the coupler are the same or decreased A portion extending with the same flow path cross-sectional area as that of the coupler cleaning liquid inlet, or a form extending while reducing the cross-sectional area of the flow channel compared to the coupler cleaning liquid inlet. Consists of features.

すなわち、カプラの洗浄液入口部からアダプタ内に形成された洗浄液流路の入口部に至るまでのアダプタ入口側については、流路全長にわたってカプラの洗浄液入口部に比べ２倍以下の流路断面積に形成することにより、カプラ内に形成される洗浄液流路の流路断面積が急激かつ大幅に拡大することを避け、それによって洗浄液の流速が局部的に低下することを避けて（激減することのない洗浄液の流速にて）乱流を発生しやすくするとともにエアー溜まりや洗浄液未接液部が発生することを防止し、かつ、カプラ内部の隅々にまで洗浄液が行き渡るようにして、洗浄効果を高めたものである。   That is, on the adapter inlet side from the cleaning liquid inlet of the coupler to the inlet of the cleaning liquid flow path formed in the adapter, the flow path cross-sectional area is less than twice that of the coupler cleaning liquid inlet over the entire length of the flow path. By avoiding this, the flow cross-sectional area of the cleaning liquid flow path formed in the coupler is prevented from abruptly and greatly expanding, thereby avoiding a local decrease in the flow speed of the cleaning liquid (reducing drastically) It is easy to generate turbulent flow (with no cleaning liquid flow rate), prevents air accumulation and non-contact parts of the cleaning liquid, and allows the cleaning liquid to reach every corner of the coupler. It is an enhanced one.

また、本発明に係る血液浄化器用カプラの洗浄装置においては、アダプタの出口側においても同様の構成とされる。例えば、アダプタの出口側において、アダプタ内に形成された洗浄液流路の出口部からカプラの洗浄液出口部に至るまでの流路を、洗浄液の流れ方向に見て、カプラの洗浄液出口部に比べ２倍以下の流路断面積にて延びる形態、カプラの洗浄液出口部と実質的に同じ流路断面積にて延びる形態のいずれかに形成することが好ましい。 Further, the blood purifier coupler cleaning device according to the present invention has the same configuration on the outlet side of the adapter . For example, on the outlet side of the adapter, the flow path from the outlet part of the cleaning liquid channel formed in the adapter to the cleaning liquid outlet part of the coupler is 2 in comparison with the cleaning liquid outlet part of the coupler when viewed in the flow direction of the cleaning liquid. It is preferable to form in either a form extending with a flow path cross-sectional area equal to or less than twice, or a form extending with a flow path cross-sectional area substantially the same as the cleaning liquid outlet portion of the coupler.

すなわち、アダプタ内に形成された洗浄液流路の出口部からカプラの洗浄液出口部に至るまでのアダプタ出口側については、カプラ内に形成される洗浄液流路を、カプラの洗浄液出口部に比べ２倍以下の流路断面積にて延びる形態（つまり、急激に縮小されることのない流路断面積にて延びる形態）、カプラの洗浄液出口部と実質的に同じ流路断面積になるように（つまり拡大も減少もすることなく）形成するようにし、それによって洗浄液の流速が局部的に急激に変化することを避けて円滑に流れるようにし、流路抵抗の局部的な増大を防止し入口側からたとえエアが洗浄液とともに送られてきた場合にあってもそれをせき止めてエアー溜まりに発展することを防止するとともに、出口側においてもある一定以上の流速を出口側全長にわたって確保することにより優れた洗浄効果を維持できるようにしたものである。また、このような出口側構造では、流路抵抗をあるレベル以下に抑制できる作用効果も期待できる。   That is, on the adapter outlet side from the outlet of the cleaning liquid flow path formed in the adapter to the cleaning liquid outlet of the coupler, the cleaning liquid flow path formed in the coupler is doubled compared to the cleaning liquid outlet of the coupler. The form extending in the following flow path cross-sectional area (that is, the form extending in the flow path cross-sectional area that is not rapidly reduced), the flow path cross-sectional area substantially the same as the cleaning liquid outlet of the coupler ( In other words, the flow rate of the cleaning liquid flows smoothly and avoids a local rapid change, and a local increase in the flow resistance is prevented and the inlet side is prevented. Even if air is sent together with the cleaning liquid, it prevents it from clogging and developing into an air pool, and a certain flow rate over the outlet side over the entire length of the outlet side. It is obtained by the so they can maintain a good cleaning effect by ensuring Te. In addition, such an outlet-side structure can be expected to have an effect of suppressing the flow path resistance below a certain level.

上記のようなアダプタの入口側、さらには出口側におけるカプラ内の洗浄液流路は、具体的には、例えば、カプラ内に形成された血液浄化器の接続口挿着用空洞部内（例えば、ダイアライザ継手挿着用空洞部内）に、それに内接しない程度の寸法の棒状の障害物を挿入し、該障害物によって結果的に流路断面積を狭くすることにより形成可能である。より具体的には、本発明では、アダプタが、カプラ内に形成された血液浄化器の接続口挿着用空洞部内に延びるアダプタ延設部を有しており、該アダプタ延設部の外面が、前述のような流路断面積の形態に形成された流路の一部を画成する構造とされる。 Specifically, the cleaning liquid flow path in the coupler on the inlet side and further on the outlet side of the adapter as described above is specifically, for example, in the cavity insertion cavity (for example, a dialyzer joint) formed in the coupler. It can be formed by inserting a rod-shaped obstacle having a size that does not inscribe it into the insertion cavity) and narrowing the cross-sectional area of the flow path with the obstacle. More specifically, in the present invention, the adapter has an adapter extending portion that extends into the connection port insertion cavity portion of the blood purifier formed in the coupler, and the outer surface of the adapter extending portion is is a structure that defines a portion of the flow path cross-sectional area flow path formed in the form of as described above.

上記のアダプタ延設部を設ける構造においては、アダプタ延設部内に、前述のような流路断面積の形態に形成された流路のいずれかの部位を、アダプタ内に形成された洗浄液流路へと連通させる連通路が形成されている構造とすることもできる。このように構成すれば、連通路の適切な配置や形状により、カプラ内のさらに隅々の細部に至るまで洗浄液を適切に行き渡らせることが可能になり、一層優れた洗浄効果を得ることができる。   In the structure in which the adapter extension part is provided, any part of the channel formed in the shape of the channel cross-sectional area as described above is provided in the adapter extension part, and the cleaning liquid channel formed in the adapter. It can also be set as the structure in which the communicating path connected to is formed. If comprised in this way, it will become possible to distribute a washing | cleaning liquid appropriately to every detail in a coupler by appropriate arrangement | positioning and shape of a communicating path, and can obtain the further outstanding washing | cleaning effect. .

このような連通路としては、後述の実施態様にも示すように、放射状に延びる通路や、アダプタの軸方向に延びる通路に形成することが可能である。   Such a communication path can be formed in a radially extending path or a path extending in the axial direction of the adapter, as will be described later in the embodiment.

なお、本発明に係る血液浄化器用カプラの洗浄装置においては、アダプタに接続された入口側カプラの洗浄液入口部から出口側カプラの洗浄液出口部に至るまで、とくに両カプラとアダプタとの接続部分において、洗浄効果の面から理想的な洗浄液の流れ状態を現出することが可能になるので、比較的容易に、カプラをＯ−リングレスタイプのものに構成することが可能になる。   In the cleaning device for a blood purifier coupler according to the present invention, from the cleaning liquid inlet portion of the inlet-side coupler connected to the adapter to the cleaning liquid outlet portion of the outlet-side coupler, particularly at the connection portion between both couplers and the adapter. Since an ideal flow state of the cleaning liquid can be obtained from the viewpoint of the cleaning effect, the coupler can be configured as an O-ringless type relatively easily.

さらに、本発明に係る血液浄化器用カプラの洗浄装置における血液浄化器としては、血液の浄化を目的として対象血液が流通されるものであればあらゆる血液浄化器を適用対象とすることができるが、とくに本発明は、血液浄化器が血液透析用のダイアライザからなる場合に好適なものである。中でも、洗浄対象となるカプラが、ダイアライザに装脱着される透析液給排用の接続口に接続されるものである場合に好適なものである。   Furthermore, as the blood purifier in the coupler cleaning device for blood purifier according to the present invention, any blood purifier can be applied as long as the target blood is distributed for the purpose of purifying blood, In particular, the present invention is suitable when the blood purifier comprises a dialyzer for hemodialysis. Especially, it is suitable when the coupler to be cleaned is connected to a dialysate supply / discharge port connected to and detached from the dialyzer.

このように、本発明に係る血液浄化器用カプラの洗浄装置によれば、アダプタの入口側、さらには出口側に接続されるカプラの内部流路を、洗浄液の流速が激減しない流路断面積にて延びるように構成したので、洗浄液の流速の急激な低下に伴う洗浄効果の低下や、エア溜まりや洗浄液未接液部の発生を適切に防止することが可能になり、簡単な構造でありながら望ましい洗浄を十分効果的に行うことが可能になる。また、確実に所定の洗浄を行うことができることから、洗浄度合の確認や追加の洗浄作業も不要になり、作業負担の軽減も達成できる。   Thus, according to the blood purification device coupler cleaning device of the present invention, the internal flow path of the coupler connected to the inlet side and further to the outlet side of the adapter has a flow path cross-sectional area in which the flow rate of the cleaning liquid does not drastically decrease. As it has a simple structure, it is possible to appropriately prevent the deterioration of the cleaning effect due to the rapid decrease in the flow rate of the cleaning liquid and the generation of air pools and parts not in contact with the cleaning liquid. Desirable cleaning can be performed sufficiently effectively. In addition, since predetermined cleaning can be performed reliably, confirmation of the degree of cleaning and additional cleaning work are unnecessary, and the work load can be reduced.

以下に、本発明の望ましい実施の形態について、図面を参照しながら説明する。
図１は、本発明の一実施態様に係る血液浄化器用カプラの洗浄装置を示しており、とくに、血液浄化器が血液透析装置のダイアライザである場合の、該ダイアライザの入口側および出口側接続口に接続される透析液給排用カプラに本発明を適用した場合を示している。図１において、図１（Ｃ）における１はダイアライザの透析液入口側または出口側の接続口を示しており、カプラ洗浄時には、図１（Ａ）、（Ｂ）に示すように、ダイアライザの入出口側接続口１から脱着されたカプラ２が、ダイアライザをバイパスさせて設けられているアダプタ３の入口側および出口側接続口に接続され、その接続状態にて洗浄液が流されて両カプラ２内が洗浄されるようになっている。図１（Ａ）、（Ｂ）においては、アダプタ３の入口側および出口側の一方側のみ示してあるが、洗浄液の流れ方向が図１（Ａ）におけるＡ方向の場合には図１（Ａ）はアダプタ３の入口側を示しており、Ｂ方向の場合には図１（Ａ）はアダプタ３の出口側を示していると考えればよい。 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an apparatus for cleaning a coupler for a blood purifier according to an embodiment of the present invention, and in particular, when the blood purifier is a dialyzer of a hemodialysis apparatus, the inlet side and outlet side connection ports of the dialyzer The case where this invention is applied to the coupler for dialysate supply / exhaustion connected to is shown. In FIG. 1, reference numeral 1 in FIG. 1 (C) denotes a dialysate inlet side or outlet side connection port of the dialyzer. When the coupler is washed, as shown in FIGS. The coupler 2 detached from the outlet side connection port 1 is connected to the inlet side and the outlet side connection port of the adapter 3 provided by bypassing the dialyzer, and the cleaning liquid is flowed in the connected state in both the couplers 2. Is to be washed. In FIGS. 1A and 1B, only one side of the inlet side and the outlet side of the adapter 3 is shown. However, when the flow direction of the cleaning liquid is the A direction in FIG. ) Indicates the inlet side of the adapter 3, and in the case of the B direction, it can be considered that FIG. 1A indicates the outlet side of the adapter 3.

まず、図１（Ａ）がアダプタ３の入口側を示しているとして説明するに、カプラ２には透析液供給チューブ４が接続されており、チューブ４内を送られてきた透析液が、入口配管コネクタ５内の流路径φｄの流路を通してカプラ２内の流路６内に導入される。カプラ２内の流路６は、本実施態様では、カプラ２の洗浄液入口部７から、流路径φｄのまま延び、カプラ２内で略直角の曲がって延びている。カプラ２内には、ダイアライザの接続口１の外径φＤ0 と略同じ内径φＤ0 の空洞部８（接続口挿着用空洞部、本実施態様では、ダイアライザ継手挿着用空洞部）が形成されており、この空洞部８内に、アダプタ３の端部に延設されたアダプタ延設部９が挿着されている。このアダプタ延設部９は、空洞部８内に空洞部８自身によって形成される流路を狭める障害物として機能しており、カプラ２の内面との協動により、後述の特定の流路断面積の形態の流路の一部を画成している。 First, description will be made assuming that FIG. 1A shows the inlet side of the adapter 3, and the dialysate supply tube 4 is connected to the coupler 2, and the dialysate sent through the tube 4 flows into the inlet. It is introduced into the flow path 6 in the coupler 2 through a flow path having a flow diameter of φd in the pipe connector 5. In the present embodiment, the flow path 6 in the coupler 2 extends from the cleaning liquid inlet 7 of the coupler 2 with the flow path diameter φd, and extends in a substantially right angle in the coupler 2. In the coupler 2, a substantially hollow portion 8 of the same internal diameter [phi] D 0 and an outer diameter [phi] D 0 of the connection port 1 of the dialyzer (connection port insertion cavity portion, in this embodiment, the dialyzer fitting insertion cavity portion) is formed An adapter extending portion 9 extending at the end of the adapter 3 is inserted into the hollow portion 8. The adapter extension 9 functions as an obstacle that narrows the flow path formed by the cavity 8 itself in the cavity 8 and cooperates with the inner surface of the coupler 2 to cut off a specific flow path described later. A part of the flow path in the form of area is defined.

アダプタ延設部９の軸方向端面とカプラ２の内面との間には、隙間ｂの流路１０が形成されており、アダプタ延設部９の外周面とカプラ２の空洞部８の内周面との間には、空洞部８の内径φＤ0 とアダプタ延設部９の外径φＤ1 との差に基づく、隙間ａの流路１１が形成されている。さらに隙間ａの流路１１の端部からは、アダプタ３内に形成された、直線状に同一径にて延びる洗浄液流路１２の入口部１３へと連通する連通路１４が設けられており、本実施態様では、連通路１４は、洗浄液流路１２の入口部１３から複数の流路形態（本実施態様では４本の連通路）にて径方向に放射状に延びている。 Between the axial end surface of the adapter extension portion 9 and the inner surface of the coupler 2, a flow path 10 with a gap b is formed, and the outer peripheral surface of the adapter extension portion 9 and the inner periphery of the cavity portion 8 of the coupler 2 are formed. Between the surfaces, a flow path 11 of a gap a is formed based on the difference between the inner diameter φD 0 of the cavity portion 8 and the outer diameter φD 1 of the adapter extension portion 9. Furthermore, from the end of the flow path 11 in the gap a, a communication path 14 is provided which is formed in the adapter 3 and communicates with the inlet portion 13 of the cleaning liquid flow path 12 extending linearly with the same diameter. In the present embodiment, the communication path 14 extends radially from the inlet portion 13 of the cleaning liquid flow path 12 in a plurality of flow path forms (four communication paths in the present embodiment) in the radial direction.

アダプタ３の入口側においては洗浄液の流路は上記のように形成されるが、カプラ２の洗浄液入口部７からアダプタ３内に形成された洗浄液流路１２の入口部１３に至るまでの流路が、洗浄液の流れ方向Ａに見て、カプラ２の洗浄液入口部７に対して流路断面積の拡大が２倍以下に抑制されて延びる形態、カプラ２の洗浄液入口部７に対して流路断面積の拡大が２倍以下に抑制されて延びる部位とカプラ２の洗浄液入口部７に比べ流路断面積が同一にてあるいは減少しながら延びる部位とを有する形態、カプラ２の洗浄液入口部７と同じ流路断面積にて延びる形態、カプラ２の洗浄液入口部７に比べ流路断面積が減少しながら延びる形態のいずれかに形成される。すなわち、前述の入口側の形態に構成され、カプラ２の洗浄液入口部７に流路６から、流路１０、流路１１、連通路１４を介してアダプタ３内に形成された洗浄液流路１２の入口部１３に至るまでの流路が、その流路断面積がいずれの部位においても実質的に激減しない形態に構成されている。   The flow path for the cleaning liquid is formed on the inlet side of the adapter 3 as described above, but the flow path from the cleaning liquid inlet section 7 of the coupler 2 to the inlet section 13 of the cleaning liquid flow path 12 formed in the adapter 3. However, when viewed in the flow direction A of the cleaning liquid, the flow channel cross-section is extended to the cleaning liquid inlet portion 7 of the coupler 2 while the expansion of the cross-sectional area of the flow path is suppressed to 2 times or less. The cleaning liquid inlet 7 of the coupler 2 has a configuration in which the expansion of the cross-sectional area is suppressed to two times or less and the portion of the flow path cross-sectional area that is the same as or decreased while the cleaning liquid inlet 7 of the coupler 2 extends. Are formed in either a form extending with the same flow path cross-sectional area or a form extending while reducing the cross-sectional area of the flow path as compared with the cleaning liquid inlet portion 7 of the coupler 2. That is, the cleaning liquid flow path 12 is configured in the above-described form on the inlet side and formed in the adapter 3 from the flow path 6 to the cleaning liquid inlet portion 7 of the coupler 2 via the flow path 10, the flow path 11, and the communication path 14. The flow path leading to the inlet portion 13 is configured in such a manner that the flow path cross-sectional area is not substantially drastically reduced in any part.

カプラ２内に形成される洗浄液流路の流路断面積がいずれの部位においても急激にき拡大されないため、流路断面積の局部的な拡大に伴う洗浄液の流速の急激な低下が回避され、それによって乱流が発生しやすくなってカプラ２内の洗浄効果が高められる。また、流路断面積の局部的な拡大に伴うエアー溜まりや洗浄液未接液部の発生も防止される。したがって、カプラ２内部の隅々にまで洗浄液が行き渡って流れ、カプラ２内の実質的に全体が効率よく洗浄される。内部洗浄の効果が著しく高められるので、図示の如く、カプラ２自体の構造も、通常用いられているＯ−リング付きのものに代えて、Ｏ−リングレスの構造とされている。汚染源となりやすかったＯ−リングを使用しない構造とすることにより、間接的に洗浄効果がより高められることになる。   Since the channel cross-sectional area of the cleaning liquid channel formed in the coupler 2 is not rapidly expanded at any part, a rapid decrease in the flow rate of the cleaning liquid due to the local expansion of the channel cross-sectional area is avoided, As a result, turbulence is easily generated, and the cleaning effect in the coupler 2 is enhanced. In addition, the occurrence of air pools and cleaning liquid non-contact parts due to local expansion of the flow path cross-sectional area is also prevented. Therefore, the cleaning liquid flows to every corner of the coupler 2 so that substantially the entire inside of the coupler 2 is cleaned efficiently. Since the effect of the internal cleaning is remarkably enhanced, as shown in the figure, the structure of the coupler 2 itself is an O-ringless structure instead of the commonly used one with an O-ring. By adopting a structure that does not use an O-ring that is likely to become a contamination source, the cleaning effect is indirectly enhanced.

上記説明は図１（Ａ）がアダプタ３の入口側を示していると考えて行ったが、洗浄液の流れ方向を方向Ｂとして、図１（Ａ）がアダプタ３の出口側を示しているとした場合には、上記アダプタ３内に形成された洗浄液流路１２の入口部１３を、洗浄液流路１２の出口部２１とみなして、上記カプラ２の洗浄液入口部７を洗浄液出口部２２とみなして、図１（Ａ）を見ることができる。   The above description was made assuming that FIG. 1A shows the inlet side of the adapter 3, but when the flow direction of the cleaning liquid is the direction B, FIG. 1A shows the outlet side of the adapter 3. In this case, the inlet portion 13 of the cleaning liquid passage 12 formed in the adapter 3 is regarded as the outlet portion 21 of the cleaning liquid passage 12, and the cleaning liquid inlet portion 7 of the coupler 2 is regarded as the cleaning liquid outlet portion 22. FIG. 1A can be seen.

この場合、アダプタ３の出口側においては、アダプタ３内に形成された洗浄液流路１２の出口部２１からカプラ２の洗浄液出口部２２に至るまでの流路が、洗浄液の流れ方向Ｂに見て、カプラ２の洗浄液出口部２２に比べ２倍以下の流路断面積にて延びる形態、カプラ２の洗浄液出口部２２と実質的に同じ流路断面積にて延びる形態のいずれかに形成される。すなわち、前述の出口側の形態に構成され、アダプタ３内に形成された洗浄液流路１２の出口部２１からカプラ２の洗浄液出口部２２に至るまでのアダプタ出口側においてカプラ２内に形成される洗浄液流路の流路断面積が、急激に縮小されないか、あるいは変化せずに実質的に同じ流路断面積になるように洗浄液流路が形成される。そのため、洗浄液の流速は局部的に大きく変化することはなく、流路全長にわたって円滑に流れる。その結果、途中で流路抵抗の局部的なかつ急激な増大等が生じないので、たとえ入口側からエアが洗浄液とともに送られてきた場合にあっても、それをせき止めてエアー溜まりに発展させること等は確実に防止される。とくに出口側の流路全長にわたってある一定以上の流速が確保されることになるので、その一定以上の流速による優れた洗浄効果が維持されることになる。   In this case, on the outlet side of the adapter 3, the flow path from the outlet portion 21 of the cleaning liquid passage 12 formed in the adapter 3 to the cleaning liquid outlet portion 22 of the coupler 2 is viewed in the flow direction B of the cleaning liquid. It is formed in one of a form extending with a flow path cross-sectional area of twice or less than the cleaning liquid outlet part 22 of the coupler 2 and a form extending with substantially the same flow path cross-sectional area as the cleaning liquid outlet part 22 of the coupler 2. . That is, it is configured in the form of the outlet side described above, and is formed in the coupler 2 on the adapter outlet side from the outlet portion 21 of the cleaning liquid flow path 12 formed in the adapter 3 to the cleaning liquid outlet portion 22 of the coupler 2. The cleaning liquid flow path is formed so that the flow path cross-sectional area of the cleaning liquid flow path is not rapidly reduced or does not change and becomes substantially the same flow path cross-sectional area. Therefore, the flow rate of the cleaning liquid does not change greatly locally and flows smoothly over the entire length of the flow path. As a result, there is no local and rapid increase in flow path resistance in the middle, so even if air is sent with the cleaning liquid from the inlet side, it is dammed up and developed into an air pool, etc. Is definitely prevented. In particular, a flow rate of a certain level or more is ensured over the entire length of the flow path on the outlet side, so that an excellent cleaning effect is maintained by the flow rate of a certain level or more.

上記のようなアダプタ３の入口側、出口側における洗浄液流路形態は、とくに共に採用されることによって、入口側から出口側に至るまでの流路の実質的に全長にわたって望ましい洗浄状態を得ることが可能になる。 The inlet side of the adapter 3 as described above, the washing solution flow path forms at the outlet side, depending on the this particularly employed together, the desired cleaning conditions over substantially the entire length of the flow path from the inlet side to the outlet side It becomes possible to obtain.

図２は、本発明の別の実施態様に係る血液浄化器用カプラの洗浄装置におけるアダプタの入口側の構造を示している。本実施態様においては、図１に示した実施態様に比べ、放射状に延びる連通路１４に加え、さらに、カプラ２内の流路６とアダプタ３内に形成された洗浄液流路１２の入口部１３とを連通する連通路３１が、アダプタ延設部９内にアダプタ３の軸方向に延びる通路として設けられている。その他の構成は図１に示した実施態様に準じるので、図１に付したのと同一の符号を付すことにより説明を省略する。本実施態様においても、カプラ２の洗浄液入口部７からアダプタ３内に形成された洗浄液流路１２の入口部１３に至るまでの流路の流路断面積の形態は、基本的に図１に示した実施態様に準じる。   FIG. 2 shows a structure of an inlet side of an adapter in a cleaning device for a blood purifier coupler according to another embodiment of the present invention. In this embodiment, compared to the embodiment shown in FIG. 1, in addition to the radially extending communication passage 14, the flow path 6 in the coupler 2 and the inlet portion 13 of the cleaning liquid flow path 12 formed in the adapter 3 are also provided. Is provided as a passage extending in the axial direction of the adapter 3 in the adapter extension portion 9. Since other configurations are the same as those in the embodiment shown in FIG. 1, the same reference numerals as those shown in FIG. Also in this embodiment, the form of the channel cross-sectional area of the flow path from the cleaning liquid inlet 7 of the coupler 2 to the inlet 13 of the cleaning liquid flow path 12 formed in the adapter 3 is basically shown in FIG. According to the embodiment shown.

カプラ２内の流路６から連通路３１を通してアダプタ３内に形成された洗浄液流路１２へと送られる洗浄液は、流路１０、流路１１、放射状に延びる連通路１４を通して回り込んできた洗浄液と、洗浄液流路１２の入口部１３で合流され、合流後に洗浄液流路１２内へと送られる。連通路３１内を送られる少量の洗浄液の直線状の流れにより、洗浄液流路１２の入口部１３では洗浄液の流れに洗浄液流路１２に沿う方向の指向性が付与され、放射状に延びる連通路１４から回り込んできて合流する洗浄液も、この指向性によってアダプタ３内の洗浄液流路１２内へと送られるので、合流およびこの部分流れがより円滑になる。その他の作用効果は図１に示した実施態様に準じる。   The cleaning liquid sent from the flow path 6 in the coupler 2 to the cleaning liquid flow path 12 formed in the adapter 3 through the communication path 31 flows around the flow path 10, the flow path 11, and the communication path 14 extending radially. Are joined at the inlet 13 of the cleaning liquid flow path 12 and are sent into the cleaning liquid flow path 12 after the merge. Due to the linear flow of a small amount of cleaning liquid fed through the communication path 31, directivity in the direction along the cleaning liquid flow path 12 is given to the flow of the cleaning liquid at the inlet portion 13 of the cleaning liquid flow path 12, and the communication path 14 extends radially. Since the cleaning liquid that wraps around and joins is also sent into the cleaning liquid flow path 12 in the adapter 3 by this directivity, the merging and this partial flow become smoother. Other functions and effects are in accordance with the embodiment shown in FIG.

図３は、本発明のさらに別の実施態様に係る血液浄化器用カプラの洗浄装置におけるアダプタの入口側の構造を示している。本実施態様においては、図２に示した実施態様に比べ、放射状に延びる連通路１４が流路断面積をより小さく、アダプタ延設部９内のアダプタ３の軸方向に延びる連通路３１が流路断面積をより大きく形成されており、連通路３１とアダプタ３内に形成された洗浄液流路１２の入口部１３との連通部が、ベンチュリ管型連通部４１に形成されている。このようなベンチュリ管型連通部４１に形成することで、放射状の連通路１４からの洗浄液が、連通路３１から洗浄液流路１２の入口部１３へと流れる洗浄液の流れによって、ベンチュリ管作用により積極的に吸い込まれることになり、合流およびこの部分流れがより円滑になる。また、流路１０、流路１１、放射状に延びる連通路１４を通して回り込んで流れる洗浄液が、上記ベンチュリ管の吸い込み作用の影響を受けて、より積極的にあるいは強制的に流されることになるので、カプラ２の内面側がより隅々まで洗浄されることになるとともに、エア溜まり等の発生もより効果的に防止されることになる。その他の作用効果は図２に示した実施態様に準じる。   FIG. 3 shows a structure on the inlet side of an adapter in a cleaning device for a blood purifier coupler according to still another embodiment of the present invention. In this embodiment, compared to the embodiment shown in FIG. 2, the radially extending communication passage 14 has a smaller flow path cross-sectional area, and the communication passage 31 extending in the axial direction of the adapter 3 in the adapter extension portion 9 flows. The passage cross-sectional area is formed larger, and a communication part between the communication path 31 and the inlet part 13 of the cleaning liquid flow path 12 formed in the adapter 3 is formed in the venturi-type communication part 41. By forming the venturi-type communication portion 41 in this way, the cleaning liquid from the radial communication path 14 is positively activated by the venturi action by the flow of the cleaning liquid flowing from the communication path 31 to the inlet portion 13 of the cleaning liquid flow path 12. Will be sucked in and the merging and this partial flow will be smoother. In addition, the cleaning liquid that flows around through the flow path 10, the flow path 11, and the radially extending communication path 14 is more positively or forcibly flowed under the influence of the suction action of the venturi tube. Further, the inner surface side of the coupler 2 is cleaned to every corner, and the occurrence of air accumulation or the like is more effectively prevented. Other functions and effects are in accordance with the embodiment shown in FIG.

本発明に係る血液浄化器用カプラの洗浄装置は、あらゆる血液浄化器に接続されるカプラの洗浄に適用でき、とくに血液透析装置におけるダイアライザに接続される透析液給排用カプラの洗浄に好適なものである。   The cleaning device for a blood purifier coupler according to the present invention can be applied to cleaning of a coupler connected to any blood purifier, and is particularly suitable for cleaning a dialysate supply / discharge coupler connected to a dialyzer in a hemodialysis device. It is.

本発明の一実施態様に係る血液浄化器用カプラの洗浄装置の構成を示しており、（Ａ）はアダプタ入口側または出口側における部分断面図、（Ｂ）はアダプタの部分断面図、（Ｃ）はカプラが接続されるダイアライザの接続口の側面図である。The structure of the washing | cleaning apparatus of the coupler for blood purifiers which concerns on one embodiment of this invention is shown, (A) is a fragmentary sectional view in the adapter inlet side or outlet side, (B) is a fragmentary sectional view of an adapter, (C) FIG. 4 is a side view of a connection port of a dialyzer to which a coupler is connected. 本発明の別の実施態様に係る血液浄化器用カプラの洗浄装置におけるアダプタの入口側の構造を示しており、（Ａ）はアダプタ入口側における部分断面図、（Ｂ）は（Ａ）のＢ−Ｂ線に沿うアダプタの横断面図である。The structure of the inlet side of the adapter in the washing | cleaning apparatus of the coupler for blood purifiers concerning another embodiment of this invention is shown, (A) is a fragmentary sectional view in the adapter inlet side, (B) is B- of (A). It is a cross-sectional view of the adapter along B line. 本発明のさらに別の実施態様に係る血液浄化器用カプラの洗浄装置におけるアダプタの入口側の構造を示しており、（Ａ）はアダプタ入口側における部分断面図、（Ｂ）は（Ａ）の拡大部分断面図である。The structure of the inlet side of the adapter in the washing | cleaning apparatus of the coupler for blood purifiers concerning another embodiment of this invention is shown, (A) is a fragmentary sectional view in the adapter inlet side, (B) is an expansion of (A). It is a fragmentary sectional view.

符号の説明Explanation of symbols

１ ダイアライザの接続口
２ カプラ
３ アダプタ
４ 透析液供給チューブ
５ 入口配管コネクタ
６ カプラ内の流路
７ カプラの洗浄液入口部
８ 空洞部（ダイアライザ継手挿着用空洞部）
９ アダプタ延設部
１０、１１ アダプタ外面とカプラ内面との間の流路
１２ アダプタ内に形成された洗浄液流路
１３ 洗浄液流路の入口部
１４ 放射状に延びる連通路
２１ アダプタ内に形成された洗浄液流路の出口部
２２ カプラの洗浄液出口部
３１ 直線状に延びる連通路
４１ ベンチュリ管型連通部 DESCRIPTION OF SYMBOLS 1 Dializer connection 2 Coupler 3 Adapter 4 Dialysate supply tube 5 Inlet piping connector 6 Flow path in coupler 7 Coupler cleaning liquid inlet 8 Cavity (dialyzer fitting insertion cavity)
DESCRIPTION OF SYMBOLS 9 Adapter extension part 10 and 11 Flow path between adapter outer surface and coupler inner surface 12 Cleaning liquid flow path formed in adapter 13 Cleaning liquid flow path inlet part 14 Radial communication path 21 Cleaning liquid formed in adapter Outlet part 22 of the flow path Cleaning liquid outlet part 31 of the coupler Communication path 41 extending in a straight line Venturi type communication part

Claims (3)

血液浄化器の入口側および出口側接続口に接続されるカプラを、血液浄化器をバイパスさせて設けられるアダプタの入口側および出口側接続口に接続して洗浄液を流すようにした血液浄化器用カプラの洗浄装置であって、アダプタの入口側および出口側において、前記アダプタが、カプラ内に形成された血液浄化器の接続口挿着用空洞部内に延びるアダプタ延設部を有しており、該アダプタ延設部の外面とカプラの内面との間に流路を画成し、画成された流路を、カプラの洗浄液入口部からアダプタ内に形成された洗浄液流路の入口部に至るまでの流路の一部およびアダプタ内に形成された洗浄液流路の出口部からカプラの洗浄液出口部に至るまでの流路の一部として形成し、かつ、カプラの洗浄液入口部からアダプタ内に形成された洗浄液流路の入口部に至るまでの流路を、全長にわたってカプラの洗浄液入口部に比べ２倍以下の流路断面積を有する流路に形成するとともに、アダプタ内に形成された洗浄液流路の出口部からカプラの洗浄液出口部に至るまでの流路を、全長にわたってカプラの洗浄液出口部に比べ２倍以下の流路断面積を有する流路に形成したことを特徴とする血液浄化器用カプラの洗浄装置。 A coupler for a blood purifier in which a coupler connected to an inlet side and an outlet side connection port of a blood purifier is connected to an inlet side and an outlet side connection port of an adapter provided by bypassing the blood purifier so that a washing liquid flows. The adapter has an adapter extending portion that extends into the insertion port insertion cavity of the blood purifier formed in the coupler on the inlet side and the outlet side of the adapter, and the adapter A flow path is defined between the outer surface of the extended portion and the inner surface of the coupler, and the defined flow path extends from the cleaning liquid inlet of the coupler to the inlet of the cleaning liquid flow path formed in the adapter. It is formed as a part of the flow path from the outlet part of the cleaning liquid flow path formed in the adapter to the cleaning liquid outlet part of the coupler , and is formed in the adapter from the cleaning liquid inlet part of the coupler. Cleaning solution The flow path up to the inlet portion of the road, and forming a channel having two times the channel cross-sectional area compared to the cleaning solution inlet of the coupler over the entire length, the outlet portion of the washing solution flow path formed in the adapter The apparatus for cleaning a coupler for a blood purifier is characterized in that the flow path from the cleaning liquid outlet to the coupler is formed into a flow path having a channel cross-sectional area that is twice or less that of the cleaning liquid outlet of the coupler over its entire length. . アダプタ延設部内に、前記アダプタ延設部の外面とカプラの内面との間に形成された流路のいずれかの部位を前記アダプタ内に形成された洗浄液流路へと連通させる連通路が形成されている、請求項１に記載の血液浄化器用カプラの洗浄装置。 In the adapter extension portion, a communication path is formed that communicates any part of the flow path formed between the outer surface of the adapter extension portion and the inner surface of the coupler to the cleaning liquid flow path formed in the adapter. The apparatus for cleaning a coupler for a blood purifier according to claim 1 . 血液浄化器が血液透析用のダイアライザからなる、請求項１または２に記載の血液浄化器用カプラの洗浄装置。 The apparatus for cleaning a coupler for a blood purifier according to claim 1 or 2 , wherein the blood purifier comprises a dialyzer for hemodialysis.
JP2007204223A 2007-08-06 2007-08-06 Cleaning device for blood purifier coupler Expired - Fee Related JP4979505B2 (en)

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2758148B2 (en) * 1995-08-14 1998-05-28 日機装株式会社 Blood purifier coupler
JP2000055274A (en) * 1998-08-10 2000-02-22 Nabco Ltd Coupler
JP2000167043A (en) * 1998-12-01 2000-06-20 Saitekku Kk Coupler washer
JP2005040393A (en) * 2003-07-23 2005-02-17 Porien Project Kk Coupler for blood dialyzer

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