JP3240702B2 - Method for preventing leakage of body fluid in medical adsorption filter and medical adsorption filter capable of preventing leakage of body fluid - Google Patents
Method for preventing leakage of body fluid in medical adsorption filter and medical adsorption filter capable of preventing leakage of body fluidInfo
- Publication number
- JP3240702B2 JP3240702B2 JP23639092A JP23639092A JP3240702B2 JP 3240702 B2 JP3240702 B2 JP 3240702B2 JP 23639092 A JP23639092 A JP 23639092A JP 23639092 A JP23639092 A JP 23639092A JP 3240702 B2 JP3240702 B2 JP 3240702B2
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- JP
- Japan
- Prior art keywords
- mesh
- side cap
- annular
- inflow
- outflow
- Prior art date
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、体液を一旦、体外に取
出して循環させる過程で、体液中の有害成分を吸着除去
して濾過処理するのを目的とする、両側が開口した筒状
のハウジング本体両側に流入側ノズルを備えた流入側キ
ャップ並びに流出側ノズルを備えた流出側キャップをこ
れらの連接部近傍にメッシュリングを横断的に配設して
装着するとともに、ハウジング本体内部の一対のメッシ
ュリング間に吸着材を充填した医療用吸着濾過器におい
て、ハウジング内部の所定の流路外にこれに連通する奥
深い隙間が形成されることで、ここに異物が滞留して、
ハウジング内部に流入させて濾過処理した、特に処理後
の体液中にこの隙間に滞留した異物が混入する危険性を
少なくできるとともに、組立ての作業性が良好で、しか
も構成部材点数が少なくなる医療用吸着濾過器における
体液の漏洩防止方法並びに体液の漏洩防止を可能とした
医療用吸着濾過器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tubular body having both sides open for the purpose of removing and removing harmful components in a body fluid in the process of once taking out and circulating the body fluid. An inflow-side cap having an inflow-side nozzle on both sides of the housing body and an outflow-side cap having an outflow-side nozzle are mounted by arranging a mesh ring transversely in the vicinity of these connecting portions, and a pair of inside of the housing main body In a medical adsorption filter filled with an adsorbent between mesh rings, a deep gap communicating with the outside of a predetermined flow path inside the housing is formed, and foreign matter stays here,
Medical treatment which reduces the danger of foreign matter staying in this gap mixed into the body fluid after it has flowed into the housing and filtered, especially in the body fluid after the treatment, and has good assembly workability and a reduced number of components The present invention relates to a method for preventing leakage of body fluid in an adsorption filter and a medical adsorption filter capable of preventing leakage of body fluid.
【０００２】[0002]
【従来の技術】従来、体液を一旦、体外に取出して循環
させる過程で、体液中の有害成分、例えば血漿中のコレ
ステロールを吸着除去して濾過処理するのを目的とした
医療用吸着濾過器としては、図１に示すように両側が開
口した筒状のハウジング本体１両側に流入側ノズル２を
備えた流入側キャップ３並びに流出側ノズル４を備えた
流出側キャップ５をこれらの連接部近傍に吸着材７を保
持するメッシュ11を横断的に張設して装着するととも
に、ハウジング本体１内部の一対のメッシュ11、11間に
各種体液の処理対象に応じて選定した吸着材７を充填し
た態様のものが多用されている。2. Description of the Related Art Conventionally, as a medical adsorptive filter for the purpose of removing and removing harmful components in body fluids, for example, cholesterol in plasma, in the process of once taking body fluids out of the body and circulating them. As shown in FIG. 1, an inflow-side cap 3 having an inflow-side nozzle 2 and an outflow-side cap 5 having an outflow-side nozzle 4 on both sides of a cylindrical housing main body 1 having both sides opened are provided in the vicinity of these connecting portions. A mode in which the mesh 11 holding the adsorbent 7 is stretched across and mounted, and the adsorbent 7 selected according to the treatment target of various bodily fluids is filled between the pair of meshes 11 inside the housing body 1. Is often used.
【０００３】そして、こうした医療用吸着濾過器は、例
えば次の〜に示すようにして組立てられている。 予め、図６に示すように成形時にハウジング本体１
と流入側キャップ３並びに図示していないが流出側キャ
ップ５間にそれぞれハウジング本体１両側に流入側キャ
ップ３並びに流出側キャップ５を外嵌させたときに、密
嵌状態になる先端側が尖鋭になった環状の溶着構造８、
９を、例えばハウジング本体１両側の口縁外側に形成し
た流入側キャップ３並びに流出側キャップ５の係合段部
10外側面と流入側キャップ３並びに流出側キャップ５の
それぞれ流入側ノズル２並びに流出側ノズル４の反対側
の口縁内側に形成する。又、ハウジング本体１には吸着
材７の充填口部16を設ける。一方、メッシュ11は外周を
二つの保持リング12、12で挟み込んでメッシュリング６
に一体成形して利用する。そして、このようなメッシュ
リング６、６を流入側キャップ３並びに流出側キャップ
５のそれぞれ流入側ノズル２並びに流出側ノズル４の反
対側に設けた嵌合凹部14、15に嵌め込む。次に、筒状の
ハウジング本体１両側にそれぞれメッシュリング６、６
を嵌め込んだ流入側キャップ３並びに流出側キャップ５
を外嵌させる。そして、高周波又は超音波をハウジング
本体１と流入側キャップ３並びに流出側キャップ５の連
接部近傍に向けて発信させることで、これらの間に形成
された密嵌状態にある環状の溶着構造８、９をそれぞれ
振動による摩擦熱で溶融させて、これらを溶着する。こ
の場合、ハウジング本体１と流入側キャップ３並びに流
出側キャップ５間の他の部分やこれらとメッシュリング
６の保持リング12、12間は、成形時に利用される抜き勾
配を形成する傾斜面の傾斜角度差や嵌合交差によって密
嵌状態になることがないから、溶着することなく残され
る。このハウジングの組立てが完了すると、ハウジング
本体１内部の一対のメッシュリング６、６間に充填口部
16を通じて吸着材７を充填する。最後に、この充填口部
16を図１中17として示す封止キャップで封止させる。と
ころで、ハウジング本体１に充填口部16を設けない態様
のものもあるが、これでは、先ずハウジング本体１一側
に流入側キャップ３並びに流出側キャップ５の一方を装
着した後、ハウジング本体１内部に他側を通じて吸着材
７を充填し、最後にハウジング本体１他側に流入側キャ
ップ３並びに流出側キャップ５の他方を装着する。 予め、筒状のハウジング本体１と流入側キャップ３
並びに流出側キャップ５間にメッシュ11を挟み込んで横
断的に張設可能に形成する。そして、ハウジング本体１
一側に流入側キャップ３並びに流出側キャップ５の一方
をこれらの間にメッシュ11を図示しない接着剤又はＯリ
ング等の封止手段を介在させて挟み込んで溶着又は接着
して装着する。この後、ハウジング本体１内部に吸着材
７を充填する。最後に、ハウジング本体１他側に流入側
キャップ３並びに流出側キャップ５の他方を同様に装着
する。 予め、筒状のハウジング本体１と流入側キャップ３
並びに流出側キャップ５間にメッシュ11をその外周に金
属リングを当てがって横断的に張設可能に形成する。そ
して、ハウジング本体１一側に流入側キャップ３並びに
流出側キャップ５の一方をこれらの間にメッシュ11をそ
の外周に金属リングを当てがって外嵌させる。この状態
で、高周波を金属リングに向けて発信させることで、特
に金属リングを振動により発熱させて、ハウジング本体
１と流入側キャップ３並びに流出側キャップ５の一方と
メッシュ11を溶着する。そして、ハウジング本体１内部
に吸着材７を充填した後、ハウジング本体１他側に流入
側キャップ３並びに流出側キャップ５の他方を同様に装
着する。[0003] Such a medical adsorptive filter is assembled, for example, in the following manner. In advance, as shown in FIG.
When the inflow-side cap 3 and the outflow-side cap 5 are externally fitted to both sides of the housing body 1 between the inflow-side cap 3 and the outflow-side cap 5 (not shown), the front end side that becomes tightly fitted becomes sharp. Annular welding structure 8,
9 is formed, for example, by engaging step portions of the inflow side cap 3 and the outflow side cap 5 formed on the outer sides of the rims on both sides of the housing body 1.
10 The outer side surface and the inflow side cap 3 and the outflow side cap 5 are formed on the inside of the rim opposite to the inflow side nozzle 2 and the outflow side nozzle 4, respectively. The housing body 1 is provided with a filling port 16 for the adsorbent 7. On the other hand, the mesh 11 has a mesh ring 6 with its outer periphery sandwiched between two holding rings 12 and 12.
It is used by being integrally molded. Then, such mesh rings 6 and 6 are fitted into fitting concave portions 14 and 15 provided on the inflow side cap 3 and the outflow side cap 5, respectively, on the opposite sides of the inflow side nozzle 2 and the outflow side nozzle 4. Next, mesh rings 6 and 6 are provided on both sides of the cylindrical housing body 1 respectively.
The inflow-side cap 3 and the outflow-side cap 5 which are fitted with
To the outside. By transmitting high frequency or ultrasonic waves toward the vicinity of the connection between the housing body 1 and the inflow-side cap 3 and the outflow-side cap 5, an annular welding structure 8, which is formed between the housing body 1 and the close-fitting state, 9 are melted by frictional heat generated by vibration, and are welded. In this case, the other portions between the housing body 1 and the inflow-side cap 3 and the outflow-side cap 5 and between these and the holding rings 12 and 12 of the mesh ring 6 are inclined at an inclined surface forming a draft used during molding. Since there is no close fitting state due to the angle difference or the fitting intersection, it is left without welding. When the assembling of the housing is completed, a filling port is provided between the pair of mesh rings 6 inside the housing main body 1.
The adsorbent 7 is filled through 16. Finally, this filling port
16 is sealed with a sealing cap shown as 17 in FIG. By the way, there is also an embodiment in which the housing body 1 is not provided with the filling port portion 16, but in this case, first, one of the inflow side cap 3 and the outflow side cap 5 is attached to one side of the housing body 1, and then the inside of the housing body 1 is removed. Then, the adsorbent 7 is filled through the other side, and finally the other of the inflow side cap 3 and the outflow side cap 5 is attached to the other side of the housing body 1. In advance, a cylindrical housing body 1 and an inflow-side cap 3
In addition, the mesh 11 is sandwiched between the outflow-side caps 5 so that the mesh 11 can be stretched transversely. And the housing body 1
One of the inflow-side cap 3 and the outflow-side cap 5 is mounted on one side by welding or bonding with the mesh 11 interposed therebetween with a sealing means such as an adhesive or an O-ring (not shown) interposed therebetween. Then, the housing body 1 is filled with the adsorbent 7. Finally, the other of the inflow-side cap 3 and the outflow-side cap 5 is similarly attached to the other side of the housing body 1. In advance, a cylindrical housing body 1 and an inflow-side cap 3
In addition, a mesh 11 is formed between the outflow side caps 5 so that the mesh 11 can be stretched transversely by applying a metal ring to the outer periphery thereof. Then, one of the inflow-side cap 3 and the outflow-side cap 5 is externally fitted to one side of the housing main body 1 with the mesh 11 applied to the outer periphery of the mesh 11 between them. In this state, by transmitting a high frequency wave toward the metal ring, the metal ring is particularly heated by vibration, and the mesh 11 is welded to the housing body 1 and one of the inflow side cap 3 and the outflow side cap 5. Then, after the interior of the housing main body 1 is filled with the adsorbent material 7, the other of the inflow side cap 3 and the outflow side cap 5 is similarly attached to the other side of the housing main body 1.
【０００４】[0004]
【発明が解決しようとする課題】ところで、このように
して組立てられた従来の医療用吸着濾過器は、〜に
ついてそれぞれ次に示すような問題がある。先ず、に
示す方式では、メッシュ11をハウジング本体１両側に横
断的に張設させるメッシュリング６が予め一体成形され
ているから、組立ての作業性は良好であるが、図６に詳
細を示すようにハウジング本体１と流入側キャップ３並
びに図示しない流出側キャップ５間に形成された環状の
溶着構造８、９同士は溶着して、ここに図中Ａとして示
す環状の溶着部が形成されるものの、図中Ｂとして示す
ハウジング本体１と流入側キャップ３並びに図示しない
流出側キャップ５間の、特に環状の溶着部Ａより内側部
分やこれらとメッシュリング６の保持リング12、12間は
成形時に利用される抜き勾配を形成する傾斜面の傾斜角
度差や嵌合交差によって密嵌状態にならないから、ここ
に環状の溶着部が形成されないだけでなく、これら傾斜
角度差や嵌合交差によって奥深い隙間が形成されること
は避けられない問題がある。そして、このような奥深い
隙間はハウジング内部の所定の流路に連通することが多
く、このため、ここに、特に流出側キャップ５側に異物
が滞留していた場合、ハウジング内部に流入させて濾過
処理した処理後の体液中にこの隙間に滞留した異物が混
入する危険性がある。又、体液の濾過処理後、ハウジン
グを生理食塩水等を利用して洗浄しても、このような隙
間に侵入した体液を充分に洗い落とせないこともある。
次に、に示す方式では、封止手段に接着剤、Ｏリング
を利用した場合共に、これらの取扱いが面倒なだけでな
く、メッシュの張設が難しいことから、組立ての作業性
が悪く、しかも接合部の封止性能が確実でない問題があ
る。又、封止手段にＯリングを利用すると、構成部材点
数が多くなる問題もある。最後に、に示す方式でも、
同じくメッシュの張設が面倒で組立てが非常に難しく、
構成部材点数が多くなる問題がある。By the way, the conventional medical adsorptive filters assembled in this way have the following problems, respectively. First, in the method shown in FIG. 6, since the mesh ring 6 for extending the mesh 11 transversely on both sides of the housing body 1 is integrally formed in advance, the workability of assembly is good, but as shown in detail in FIG. The annular welding structures 8 and 9 formed between the housing body 1 and the inflow side cap 3 and the outflow side cap 5 (not shown) are welded to each other to form an annular welding portion shown as A in the figure. A portion between the housing main body 1 and the inflow side cap 3 shown as B in the drawing and an outflow side cap 5 (not shown), particularly the portion inside the annular welded portion A and between these and the holding rings 12 and 12 of the mesh ring 6 are used at the time of molding. Because of the difference between the inclination angles of the inclined surfaces forming the draft angle and the intersection of the fittings, a tight fitting state is not formed, so that not only the annular welded portion is not formed here, but also the inclination angle difference and the fitting The deep gap by crossing is formed, there is a problem unavoidable. Such a deep gap often communicates with a predetermined flow path inside the housing. For this reason, especially when foreign matter is retained on the outflow side cap 5 side, the foreign matter is allowed to flow into the housing and filtered. There is a danger that foreign matter staying in this gap will be mixed into the treated body fluid. Further, even if the housing is washed with physiological saline or the like after the filtering treatment of the bodily fluid, the bodily fluid that has entered such a gap may not be sufficiently washed off.
Next, in the method shown in the following, in the case where an adhesive or an O-ring is used as the sealing means, not only is it troublesome to handle these but also it is difficult to stretch the mesh, so that the workability of assembly is poor, and There is a problem that the sealing performance of the joint is not reliable. Further, when an O-ring is used as the sealing means, there is a problem that the number of constituent members increases. Finally, the method shown in
Similarly, it is very difficult to assemble the mesh because it is troublesome,
There is a problem that the number of constituent members increases.
【０００５】こうした従来の問題点に鑑みて発明された
のが本発明に係る医療用吸着濾過器における体液の漏洩
防止方法並びに体液の漏洩防止を可能とした医療用吸着
濾過器で、ハウジング内部の所定の流路外にこれに連通
する奥深い隙間が形成されることで、ここに異物が滞留
して、ハウジング内部に流入させて濾過処理した、特に
処理後の体液中にこの隙間に滞留した異物が混入する危
険性を少なくし、しかも組立ての作業性を良好にすると
ともに、構成部材点数を少なくすることを目的とする。In view of the above-mentioned conventional problems, a method for preventing leakage of body fluid in a medical adsorption filter according to the present invention and a medical adsorption filter capable of preventing leakage of body fluid are disclosed. By forming a deep gap communicating with the outside of the predetermined flow path, the foreign matter stays here and flows into the inside of the housing and is subjected to the filtration process. In particular, the foreign matter staying in this gap in the body fluid after the treatment It is an object of the present invention to reduce the risk of contamination, improve the workability of assembly, and reduce the number of constituent members.
【０００６】[0006]
【課題を解決するための手段】このような目的を達成す
るため、請求項１は、両側が開口した筒状のハウジング
本体両側に流入側ノズルを備えた流入側キャップ並びに
流出側ノズルを備えた流出側キャップをこれらの連接部
近傍にメッシュリングを横断的に配設して装着するとと
もに、ハウジング本体内部の一対のメッシュリング間に
吸着材を充填した医療用吸着濾過器において、メッシュ
リングを二つの保持リング間にメッシュ外周を挟み込ん
で一体成形し、ハウジング本体両側に流入側キャップ並
びに流出側キャップをこれらの連接部近傍にメッシュリ
ングを横断的に配設して位置づけたときに、ハウジング
本体とメッシュリング外周の保持リング間、又流入側キ
ャップ並びに流出側キャップの双方又は一方とメッシュ
リング外周の保持リング間にそれぞれ環状の接合部が形
成される態様に構成して、これらの環状の接合部間に環
状の溶着構造を設け、ハウジング本体と流入側キャップ
並びに流出側キャップの双方又は一方とメッシュリング
外周の保持リングをそれぞれ溶着して一体化させること
で、内部に流入した体液がこれらの間に形成される隙間
に漏洩するのを防止した医療用吸着濾過器における体液
の漏洩防止方法を要旨とする。In order to achieve such an object, a first aspect of the present invention is to provide an inflow-side cap and an outflow-side nozzle provided with an inflow-side nozzle on both sides of a cylindrical housing body which is open on both sides. An outflow side cap is mounted in such a manner that a mesh ring is disposed transversely in the vicinity of these connecting portions, and a mesh ring is attached to a pair of mesh rings inside a housing body in a medical adsorption filter filled with an adsorbent. When the outer periphery of the mesh is sandwiched between the two holding rings and integrally formed, and the inflow side cap and the outflow side cap are arranged on both sides of the housing body and the mesh ring is disposed transversely in the vicinity of these connecting portions, the housing body and Between the holding rings on the outer circumference of the mesh ring, and / or both the inflow side cap and the outflow side cap and the outer circumference of the mesh ring Ring joints are formed between the ring members, and an annular welding structure is provided between these ring joints. The housing body and / or one of the inflow-side cap and the outflow-side cap are meshed with the mesh ring. The gist of the present invention is a method of preventing leakage of bodily fluids in a medical adsorption / filtration filter, in which a bodily fluid flowing into the interior is prevented from leaking into a gap formed therebetween by welding and integrating the outer retaining rings. I do.
【０００７】又、請求項２は、両側が開口した筒状のハ
ウジング本体両側に流入側ノズルを備えた流入側キャッ
プ並びに流出側ノズルを備えた流出側キャップをこれら
の連接部近傍にメッシュリングを横断的に配設して装着
するとともに、ハウジング本体内部の一対のメッシュリ
ング間に吸着材を充填した医療用吸着濾過器で、メッシ
ュリングを二つの保持リング間にメッシュ外周を挟み込
んで一体成形し、ハウジング本体両側に流入側キャップ
並びに流出側キャップをこれらの連接部近傍にメッシュ
リングを横断的に配設して位置づけたときに、ハウジン
グ本体とメッシュリング外周の保持リング間、又流入側
キャップ並びに流出側キャップの双方又は一方とメッシ
ュリング外周の保持リング間にそれぞれ環状の接合部が
形成される態様に構成して、これらの環状の接合部間に
環状の溶着構造を設け、ハウジング本体と流入側キャッ
プ並びに流出側キャップの双方又は一方とメッシュリン
グ外周の保持リングをそれぞれ溶着して一体化させた体
液の漏洩防止を可能とした医療用吸着濾過器を要旨とす
る。そして、請求項３では、請求項２において、環状の
溶着構造として、環状のシエアジョイント構造又は環状
のビードジョイント構造を利用したことを、請求項４で
は、同じく請求項２において、環状の溶着構造として、
環状のパットジョイント構造を利用したことをそれぞれ
例示した。更に、請求項５では、請求項４において、環
状のパットジョイント構造を構成する環状凸条の断面形
状を多角形に形成したことを例示した。次に、請求項６
では、ハウジング本体と流入側キャップ並びに流出側キ
ャップの双方又は一方の間に環状の溶着構造を設けたこ
とを例示した。又、請求項７では、各構成部材が全て同
一の合成樹脂体から形成されたことを例示した。そし
て、請求項８では、請求項７において、各構成部材が全
てポリプロピレンから形成されたことを、又、請求項９
では、同じく請求項７において、各構成部材が全てポリ
カーボネイトから形成されたことをそれぞれ例示した。
更に、請求項１０では、メッシュを除く各構成部材が全
て同一の合成樹脂体から形成されるとともに、メッシュ
がこれらと異種の合成樹脂体から形成されたことを例示
した。そして、請求項１１では、請求項１０において、
メッシュを除く各構成部材が全てポリプロピレンから形
成されたことを、又、請求項１２では、同じく請求項１
０において、メッシュを除く各構成部材が全てポリカー
ボネイトから形成されたことをそれぞれ例示した。更
に、請求項１３では、請求項１２において、メッシュを
除く各構成部材が全てポリカーボネイトから形成される
とともに、メッシュがポリエステルから形成されたこと
を例示した。[0007] Further, an inflow side cap having an inflow side nozzle and an outflow side cap having an outflow side nozzle on both sides of a cylindrical housing main body having both sides opened are provided with a mesh ring in the vicinity of a connecting portion thereof. A medical adsorptive filter filled with an adsorbent between a pair of mesh rings inside the housing body, and the mesh rings are integrally formed by sandwiching the outer periphery of the mesh between the two holding rings. When the inflow-side cap and the outflow-side cap are disposed on both sides of the housing body and the mesh ring is disposed transversely in the vicinity of these connecting portions, the gap between the housing body and the holding ring on the outer periphery of the mesh ring, the inflow-side cap and An annular joint is formed between both or one of the outflow side caps and the holding ring on the outer periphery of the mesh ring. A body fluid in which an annular welding structure is provided between these annular joints, and the housing body and / or one or both of the inflow-side cap and the outflow-side cap are welded and integrated with the holding ring on the outer periphery of the mesh ring. The gist of the present invention is a medical adsorption filter capable of preventing leakage. According to a third aspect of the present invention, in the second aspect, an annular shear joint structure or an annular bead joint structure is used as the annular welding structure. As
The use of the ring-shaped pad joint structure has been exemplified. Further, in claim 5, in claim 4, the cross-sectional shape of the annular ridge forming the annular pad joint structure is formed as a polygon. Next, claim 6
In the above, an example has been described in which an annular welding structure is provided between the housing main body and at least one of the inflow side cap and the outflow side cap. Claim 7 exemplifies that all the constituent members are formed of the same synthetic resin body. According to claim 8, in claim 7, all the constituent members are formed of polypropylene.
Then, similarly, in claim 7, it has been exemplified that all the constituent members are formed of polycarbonate.
Further, in claim 10, each constituent member except the mesh is formed from the same synthetic resin body, and the mesh is formed from a synthetic resin body different from these. And in Claim 11, in Claim 10,
In the twelfth aspect of the present invention, all the components except the mesh are formed of polypropylene.
In the example No. 0, all the constituent members except the mesh were respectively formed from polycarbonate. Furthermore, claim 13 exemplifies that, in claim 12, all the constituent members except the mesh are formed of polycarbonate, and the mesh is formed of polyester.
【０００８】[0008]
【作用】而して、こうした医療用吸着濾過器は、従来と
同様、体液を一旦、体外に取出して循環させる過程で、
ハウジングの流入側から流入させて、内部の流路を流動
通過させることで、各種体液中の有害成分、例えば血漿
中のコレステロールを内部に充填させた吸着材で吸着除
去して濾過処理するとともに、処理後の体液をハウジン
グ内への流入圧を利用して流出側から流出させるもので
ある。そして、ハウジング本体と流入側キャップ並びに
流出側キャップとメッシュリング外周の保持リングはそ
れぞれ溶着させて一体化してあるから、ハウジング内部
の所定の流路外にこれに連通する奥深い隙間が形成され
ることがなく、このような隙間に異物が滞留して、体液
中にこうした異物が混入する危険性が少なくなる。As described above, such a medical adsorptive filter, in the same manner as in the past, takes out body fluid once and circulates it outside the body.
By flowing from the inflow side of the housing and flowing through the internal flow path, harmful components in various body fluids, for example, cholesterol in plasma while being adsorbed and removed by an adsorbent filled therein, and filtered, The body fluid after the treatment is caused to flow out from the outflow side using the inflow pressure into the housing. Since the housing body and the inflow-side cap and the outflow-side cap and the holding ring on the outer periphery of the mesh ring are welded and integrated respectively, a deep gap communicating with the housing is formed outside a predetermined flow path inside the housing. Therefore, there is no danger of foreign substances staying in such gaps and mixing of such foreign substances into body fluids.
【０００９】[0009]
【実施例】本発明に係る医療用吸着濾過器における体液
の漏洩防止方法並びに体液の漏洩防止を可能とした医療
用吸着濾過器の詳細を更に添付の図面に基づき説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of a method for preventing leakage of body fluid in a medical adsorption filter according to the present invention and a medical adsorption filter capable of preventing leakage of body fluid will be further described with reference to the accompanying drawings.
【００１０】図１には、このような医療用吸着濾過器の
概略を図中左側だけを断面状態にして示している。これ
は、体液を一旦、体外に取出して循環させる過程で、ハ
ウジングの図中上方の流入側から流入させて、内部の流
路を流動通過させることで、各種体液中の有害成分を内
部に充填させた吸着材で吸着除去して濾過処理するとと
もに、処理後の体液をハウジング内への流入圧を利用し
て図中下方の流出側から流出させるものである。尚、こ
こで言う体液とは、血液、血漿、血清又は血球成分等を
包括する概念である。そして、医療用吸着濾過器とは、
ハウジング内部にこれら各種体液の処理対象に応じて選
定して充填した吸着材で、これら体液中の有害成分を吸
着除去して濾過処理する態様の総称である。一方、吸着
材は前述したように各種体液の処理対象に応じて選定さ
れるのであるが、活性炭、イオン交換樹脂、ＬＤＬ吸着
体、マイクログロブリン吸着体等が利用される。このよ
うな医療用吸着濾過器の具体的な使用例としては、例え
ば血漿中のコレステロールを吸着除去して濾過処理する
ことが挙げられる。FIG. 1 schematically shows such a medical adsorption filter in a state where only the left side in the figure is in a sectional state. This is a process in which bodily fluids are once taken out of the body and circulated, inflowing from the inflow side above the housing in the figure, and flowing through the internal flow path, thereby filling the inside with harmful components in various body fluids In addition to the adsorption and removal performed by the adsorbent, the filtration is performed, and the treated body fluid is caused to flow out of the lower outflow side in the drawing by using the inflow pressure into the housing. Here, the body fluid is a concept including blood, plasma, serum, blood cell components and the like. And with a medical adsorption filter,
This is a general term for an embodiment in which the harmful components in the body fluid are adsorbed and removed by an adsorbent which is filled in the housing in accordance with the object to be treated with these various body fluids, followed by filtration. On the other hand, as described above, the adsorbent is selected according to the treatment target of various body fluids, and activated carbon, an ion exchange resin, an LDL adsorbent, a microglobulin adsorbent, or the like is used. As a specific example of use of such a medical adsorption filter, for example, filtration treatment is performed by removing cholesterol in plasma by adsorption.
【００１１】次に、本発明に係る医療用吸着濾過器の具
体例を添付の図１〜図５に基づき説明する。Next, a specific example of a medical adsorption filter according to the present invention will be described with reference to FIGS.
【００１２】これは、図１に示すように両側が開口した
円筒状のハウジング本体１両側に流入側ノズル２を備え
た流入側キャップ３並びに流出側ノズル４を備えた流出
側キャップ５をそれぞれこれら流入側ノズル２並びに流
出側ノズル４の反対側に吸着材を保持するメッシュリン
グ６、６を予め嵌め込んで装着するとともに、ハウジン
グ本体１内部の一対のメッシュリング６、６間に前述し
たように各種体液の処理対象に応じて選定した吸着材７
を充填したものである。As shown in FIG. 1, an inflow side cap 3 having an inflow side nozzle 2 and an outflow side cap 5 having an outflow side nozzle 4 are provided on both sides of a cylindrical housing body 1 having both sides opened. The mesh rings 6 for holding the adsorbent are fitted and mounted on the opposite sides of the inflow side nozzle 2 and the outflow side nozzle 4 in advance, and between the pair of mesh rings 6 inside the housing body 1 as described above. Adsorbent 7 selected according to the treatment target of various body fluids
Is filled.
【００１３】又、図２、図３、図４に示すようにハウジ
ング本体１と流入側キャップ３並びに図示していないが
流出側キャップ５間にそれぞれハウジング本体１両側に
流入側キャップ３並びに流出側キャップ５を外嵌させた
ときに、密嵌状態になる先端側が尖鋭になった環状の溶
着構造８、９が形成されている。図示した実施例では、
この環状の溶着構造８、９の一方はハウジング本体１両
側の口縁外側に形成した流入側キャップ３並びに流出側
キャップ５の係合段部10外側面に形成されるとともに、
これらの他方は流入側キャップ３並びに流出側キャップ
５の流入側ノズル２並びに流出側ノズル４の反対側の口
縁内側に形成されている。As shown in FIGS. 2, 3 and 4, between the housing body 1 and the inflow side cap 3 and between the outflow side cap 5 (not shown), the inflow side cap 3 and the outflow side When the cap 5 is externally fitted, the annular welding structures 8 and 9 are formed, which are tightly fitted to each other and have sharpened distal ends. In the illustrated embodiment,
One of the annular welding structures 8 and 9 is formed on the outer surface of the engaging step portion 10 of the inflow-side cap 3 and the outflow-side cap 5 formed on the outer sides of the edges on both sides of the housing main body 1.
The other of these is formed inside the rim of the inflow side cap 3 and the outflow side cap 5 opposite to the inflow side nozzle 2 and the outflow side nozzle 4.
【００１４】一方、メッシュリング６はメッシュ11外周
を二つの保持リング12、12で挟み込んで一体成形される
ものである。具体的には、予め保持リング12、12の一方
を射出成形用金型を利用して成形し、これの上にメッシ
ュ11を置いて、次に保持リング12、12の他方の射出成形
用金型に移し、保持リング12、12の他方を成形する。こ
のため、予め成形する保持リング12、12の一方は少なく
ともこれの他方の成形時にメッシュ11の撓みや捩れを防
止する面から、放射状の、又は図５に示すように同心円
状と放射状を組合わせた内リブ13を設けることが適宜考
慮される。On the other hand, the mesh ring 6 is formed integrally by sandwiching the outer periphery of the mesh 11 between the two holding rings 12, 12. Specifically, one of the retaining rings 12, 12 is molded in advance using an injection molding die, a mesh 11 is placed thereon, and then the other injection molding metal of the retaining rings 12, 12 is formed. Transfer to a mold and form the other of the retaining rings 12,12. For this reason, one of the holding rings 12, 12 to be formed in advance is formed in a radial shape or a combination of a concentric shape and a radial shape as shown in FIG. The provision of the inner rib 13 is appropriately considered.
【００１５】尚、図中14、15はそれぞれ流入側キャップ
３並びに流出側キャップ５の流入側ノズル２並びに流出
側ノズル４の反対側に設けたメッシュリング６の嵌合凹
部である。又、16はハウジング本体１に設けた吸着材７
の充填口部を示している。更に、図中17はハウジング本
体１内部に吸着材７を充填した後、充填口部16に装着さ
れた封止キャップである。In the drawings, reference numerals 14 and 15 denote fitting recesses of a mesh ring 6 provided on the inflow side cap 3 and the outflow side cap 5 on the side opposite to the inflow side nozzle 2 and the outflow side nozzle 4, respectively. 16 is an adsorbent 7 provided on the housing body 1.
Is shown. Further, in the figure, reference numeral 17 denotes a sealing cap mounted on the filling port 16 after the interior of the housing body 1 is filled with the adsorbent 7.
【００１６】ところで、この医療用吸着濾過器では、ハ
ウジング内部の所定の流路外にこれに連通する奥深い隙
間が形成されないことを目的に、従来のようにハウジン
グ本体１と流入側キャップ３並びに流出側キャップ５を
溶着するのに加えて、これらとメッシュリング６の保持
リング12、12をも更に溶着し、これらを一体化させてい
る。こうしたことから、ハウジング本体１と流入側キャ
ップ３並びに流出側キャップ５とメッシュリング６の保
持リング12、12の溶着を確実にするため、図２、図３、
図４に示すようにハウジング本体１両側に流入側キャッ
プ３並びに流出側キャップ５をこれらの連接部近傍にメ
ッシュリング６、６を横断的に配設して位置づけたとき
に、ハウジング本体１の口縁とメッシュリング６外周の
保持リング12間、又流入側キャップ３並びに流出側キャ
ップ５の嵌合凹部14、15底面と同じくメッシュリング６
外周の保持リング12間にそれぞれ環状の接合部が形成さ
れる態様に構成するとともに、これらの環状の接合部間
に環状の溶着構造18、19を設けている。そして、これら
両者の環状の接合部間に、図２に示す実施例では、環状
のシエアジョイント構造を利用した環状の溶着構造18、
19を、又図３、図４に示す実施例では、環状のパットジ
ョイント構造を利用した環状の溶着構造18、19をそれぞ
れ設けている。又、こうした環状のパットジョイント構
造を利用した環状の溶着構造18、19を設けるについて、
環状のパットジョイント構造を構成する断面形状が三角
形になった環状凸条を、図３にはこれらの環状の接合部
の共にメッシュリング６側に形成した例を、又図４には
これらの環状の接合部のハウジング本体１側と流入側キ
ャップ３側並びに図示しない流出側キャップ５側に形成
した例をそれぞれ示している。By the way, in this medical adsorptive filter, the housing main body 1, the inflow side cap 3 and the outflow side cap are provided in order to prevent a deep gap communicating with the housing body 1 from being formed outside a predetermined flow path inside the housing. In addition to welding the side caps 5, these and the holding rings 12, 12 of the mesh ring 6 are further welded to integrate them. In order to ensure that the housing body 1 and the inflow side cap 3 and the outflow side cap 5 and the holding rings 12 and 12 of the mesh ring 6 are welded to each other, FIGS.
As shown in FIG. 4, when the inflow-side cap 3 and the outflow-side cap 5 are positioned on both sides of the housing main body 1 with the mesh rings 6 and 6 arranged transversely in the vicinity of the connecting portions thereof, the opening of the housing main body 1 is opened. Between the edge and the holding ring 12 on the outer periphery of the mesh ring 6, as well as the bottom of the fitting recesses 14 and 15 of the inflow side cap 3 and the outflow side cap 5, the mesh ring 6
An annular joint is formed between the outer holding rings 12, and annular welded structures 18, 19 are provided between these annular joints. In the embodiment shown in FIG. 2, an annular welding structure 18 utilizing an annular shear joint structure is provided between the two annular joining portions.
In the embodiment shown in FIG. 3 and FIG. 3 and FIG. 4, annular welding structures 18 and 19 utilizing an annular pad joint structure are provided, respectively. Also, regarding the provision of the annular welding structures 18, 19 utilizing such an annular pad joint structure,
FIG. 3 shows an example in which both of these annular joints are formed on the mesh ring 6 side, and FIG. Are formed on the housing body 1 side, the inflow side cap 3 side, and the outflow side cap 5 side (not shown), respectively.
【００１７】一方、このような医療用吸着濾過器は、ハ
ウジング本体１と流入側キャップ３並びに流出側キャッ
プ５とメッシュリング６外周の保持リング12、12を溶着
して一体化させる関係上、少なくともこれらの構成部材
は全て互いに溶着可能な合成樹脂体、特に同一の合成樹
脂体、例えばポリプロピレン、ポリカーボネイト、ポリ
エチレンテレフタレート等のポリエステルから形成され
る。又、メッシュ11はこれらと同一又は異種の合成樹脂
体から形成される。しかし、異種の合成樹脂体から形成
する場合、保持リング12、12を形成する合成樹脂体と溶
着可能な異種の合成樹脂体を選定することが必要とな
る。この場合、例えば保持リング12、12をポリカーボネ
イトから形成するとともに、メッシュ11をポリエチレン
テレフタレート等のポリエステルから形成することが考
慮される。On the other hand, such a medical adsorptive filter has at least a structure in which the housing body 1 and the inflow-side cap 3 and the outflow-side cap 5 and the holding rings 12 and 12 on the outer periphery of the mesh ring 6 are welded and integrated. These constituent members are all formed of a synthetic resin body which can be welded to each other, particularly, the same synthetic resin body, for example, polyester such as polypropylene, polycarbonate, polyethylene terephthalate and the like. The mesh 11 is formed of the same or different synthetic resin bodies. However, when formed from different types of synthetic resin bodies, it is necessary to select different types of synthetic resin bodies that can be welded to the synthetic resin bodies forming the holding rings 12 and 12. In this case, for example, it is considered that the retaining rings 12, 12 are formed of polycarbonate and the mesh 11 is formed of polyester such as polyethylene terephthalate.
【００１８】ところで、構成部材をポリプロピレンのよ
うな結晶性ポリマーから形成する場合には、ハウジング
本体１とメッシュリング６の保持リング12間、又流入側
キャップ３並びに流出側キャップ５とメッシュリング６
の保持リング12間にそれぞれ設ける環状の溶着構造18、
19は環状のシエアジョイント構造を利用するのが、環状
のパットジョイント構造を利用するより好ましいと考え
られる。しかし、構成部材を他のポリカーボネイト、ポ
リエステルから形成する場合には、環状の溶着構造18、
19は環状のシエアジョイント構造、環状のパットジョイ
ント構造のいずれを利用しても同等であると考えられ
る。When the constituent members are formed from a crystalline polymer such as polypropylene, the space between the housing body 1 and the holding ring 12 of the mesh ring 6 and between the inflow side cap 3 and the outflow side cap 5 and the mesh ring 6
Annular welding structures 18 provided between the holding rings 12 of the
It is considered that the use of an annular shear joint structure is more preferable than the use of an annular pad joint structure. However, when the constituent members are formed of other polycarbonate or polyester, the annular welded structure 18,
19 is considered to be the same regardless of whether an annular shear joint structure or an annular pad joint structure is used.
【００１９】そして、こうした医療用吸着濾過器は次に
示すようにして組立てられる。予め、流入側キャップ３
並びに流出側キャップ５の流入側ノズル２並びに流出側
ノズル４の反対側に設けた嵌合凹部14、15にメッシュリ
ング６を嵌め込む。次に、ハウジング本体１一側に流入
側キャップ３並びに流出側キャップ５の一方をそれの流
入側ノズル２並びに流出側ノズル５の反対側を外嵌させ
る。この後、ハウジング本体１に対して、一側の流入側
キャップ３並びに流出側キャップ５の一方をこれに向け
て押圧させ、ハウジング本体１と流入側キャップ３並び
に流出側キャップ５の一方の環状の溶着構造８、９同士
を密嵌状態にするとともに、ハウジング本体１と流入側
キャップ３並びに流出側キャップ５の一方を間にメッシ
ュリング６外周の保持リング12をはさんで密接状態に
し、結果としてこれら両者の環状の接合部の一方に設け
た環状の溶着構造18、19を他方に密接状態にする。この
状態で、高周波又は超音波をハウジング本体１と流入側
キャップ３並びに流出側キャップ５の一方の連接部近傍
に向けて発信させることで、ハウジング本体１と流入側
キャップ３並びに流出側キャップ５の一方の間に形成さ
れた密嵌状態にある環状の溶着構造８、９の少なくとも
一部先端側がそれぞれ振動による摩擦熱で溶融して溶着
するとともに、ハウジング本体１とメッシュリング６外
周の保持リング12間と流入側キャップ３並びに流出側キ
ャップ５の一方とメッシュリング６外周の保持リング12
間にある環状の溶着構造18、19の少なくとも一部密接側
も同じく溶融してこれらが溶着する。次に、ハウジング
本体１に対して流入側キャップ３並びに流出側キャップ
５の他方を同様に装着する。即ち、ここでは、ハウジン
グ本体１と流入側キャップ３並びに図示しない流出側キ
ャップ５間に図３、図４中Ａとして示すような環状の溶
着部が形成されるとともに、ハウジング本体１の口縁と
メッシュリング６外周の保持リング12間と流入側キャッ
プ３並びに流出側キャップ５とメッシュリング６外周の
保持リング12間にも同じく共に環状の溶着部が形成され
るのである。このハウジングの組立てが完了すると、円
筒状のハウジング本体１内部の一対のメッシュリング
６、６間に充填口部16を通じて吸着材７を充填する。最
後に、この充填口部16を封止キャップ17で封止させる。Then, such a medical adsorption filter is assembled as follows. In advance, the inflow side cap 3
The mesh ring 6 is fitted into fitting recesses 14 and 15 provided on the outflow side cap 5 on the side opposite to the inflow side nozzle 2 and the outflow side nozzle 4. Next, one of the inflow-side cap 3 and the outflow-side cap 5 is externally fitted to one side of the housing body 1 on the opposite side of the inflow-side nozzle 2 and the outflow-side nozzle 5. Thereafter, one of the inflow-side cap 3 and the outflow-side cap 5 is pressed against the housing body 1 toward the housing body 1, and one of the housing body 1, the inflow-side cap 3, and the one of the outflow-side cap 5 is formed into an annular shape. The welding structures 8 and 9 are tightly fitted to each other, and the housing body 1 and one of the inflow-side cap 3 and the outflow-side cap 5 are held in close contact with the holding ring 12 on the outer periphery of the mesh ring 6 interposed therebetween. The annular welded structures 18, 19 provided at one of the two annular joints are brought into close contact with the other. In this state, the housing body 1 and the inflow side cap 3 and the outflow side cap 5 are transmitted by transmitting high frequency or ultrasonic waves to the vicinity of one connecting portion of the housing body 1 and the inflow side cap 3 and the outflow side cap 5. At least a part of the annular welded structures 8, 9 in a tightly fitted state formed between them is melted and welded by frictional heat due to vibration, respectively, and the housing body 1 and the holding ring 12 on the outer periphery of the mesh ring 6 are welded. One of the gap, the inflow-side cap 3 and the outflow-side cap 5, and the holding ring 12 around the mesh ring 6
At least a part of the annular welded structures 18 and 19 between them is also melted and welded at least partially. Next, the other of the inflow-side cap 3 and the outflow-side cap 5 is similarly attached to the housing body 1. That is, here, an annular welded portion shown as A in FIGS. 3 and 4 is formed between the housing body 1 and the inflow side cap 3 and the outflow side cap 5 (not shown). Similarly, annular welds are formed between the holding rings 12 on the outer periphery of the mesh ring 6 and between the inflow side cap 3 and between the outflow side cap 5 and the holding ring 12 on the outer periphery of the mesh ring 6. When the assembling of the housing is completed, the adsorbent 7 is filled through the filling port 16 between the pair of mesh rings 6 inside the cylindrical housing body 1. Finally, the filling port 16 is sealed with a sealing cap 17.
【００２０】ところで、このような医療用吸着濾過器で
は、ハウジング内部の所定の流路外にこれに連通する奥
深い隙間が形成されることがなく、こうした隙間に異物
が滞留して、ハウジング内部にそれの流入側から流入さ
せて濾過処理した、特に処理後の体液中に異物が混入す
る危険性が少なくなるのである。By the way, in such a medical adsorptive filter, a deep gap communicating therewith is not formed outside a predetermined flow path inside the housing, and foreign matter stays in such a gap, and the foreign matter stays inside the housing. The risk of entry of foreign matter into the body fluid, especially after the treatment, is reduced by inflow from the inflow side thereof.
【００２１】次に、本発明に係る医療用吸着濾過器の態
様と従来のそれの態様について、医療用吸着濾過器の組
立て後に、内部に０．５ｋｇ／ｃｍ2 の加圧状態で水を
流入させて、水洩れの有無について比較実験を行った。
ここでは、図１に概略を示す医療用吸着濾過器を、実施
例１では、各構成部材を全てポリプロピレンから形成す
るとともに、メッシュ11は目開き１５０μｍに形成し
て、又実施例２〜５ではメッシュ11を除く各構成部材を
全てポリカーボネイトから形成するとともに、メッシュ
11はポリエチレンテレフタレートから目開き１５０μｍ
に形成して、それぞれについて実験を行った。又、ここ
で用いるメッシュリング６は前述したようにして一体成
形されている。更に、ここでは、ハウジング本体１と流
入側キャップ３並びに流出側キャップ５とメッシュ11外
周の保持リング12は超音波溶着機（米国、ブランソン社
製、モデル８８００）の超音波ホーンを加圧しながら押
し当てて、超音波を発信させて溶着した。実施例１ 図２に示すようにハウジング本体１と流入側キャップ３
並びに流出側キャップ５とメッシュリング６外周の保持
リング12にインターフェアランス０．５ｍｍ、溶着代
０．７ｍｍの環状のシエアジョイント構造を利用した環
状の溶着構造18、19を設けたものを用いた。尚、溶着条
件（主条件）は次に示す通りである。 ブースター（振幅倍率） １：１．５ 溶着圧力 １．４ｋｇ／ｃｍ2 溶着時間 １．０秒 ダイナミックトリガー ３実施例２ 図３に示すようにメッシュリング６外周の保持リング1
2、12の両表面にそれぞれ一条の基端側の幅が０．３ｍ
ｍで、高さが０．３ｍｍの断面形状が三角形の環状凸条
を形成して環状のパットジョイント構造を利用した環状
の溶着構造18、19を設けたものを用いた。 尚、溶着条件 (主条件) は次に示す通りである。 ブースター（振幅倍率） １：１．５ 溶着圧力 ２．１ｋｇ／ｃｍ2 溶着時間 ０．６秒 ダイナミックトリガー ４実施例３ メッシュリング６外周の保持リング12、12の両表面に同
じく基端側の幅が０．５ｍｍで、高さが０．５ｍｍの断
面形状が三角形の環状凸条を形成した他は実施例２と同
態様のものを用いた。尚、溶着条件（主条件）は実施例
２と同じにした。実施例４ 図４に示すようにハウジング本体１の口縁と流入側キャ
ップ３並びに流出側キャップ５の嵌合凹部14、15底面に
それぞれ一条の基端側の幅が０．５ｍｍで、高さが０．
５ｍｍの断面形状が三角形の環状凸条を形成して環状の
溶着構造18、19を設けたものを用いた。尚、溶着条件
（主条件）は実施例２と同じにした。実施例５ ハウジング本体１の口縁と流入側キャップ３並びに流出
側キャップ５の嵌合凹部14、15底面に同じくそれぞれ基
端側の幅が１．０ｍｍで、高さが１．０ｍｍの断面形状
が三角形の環状凸条を形成した他は実施例３と同態様の
ものを用いた。尚、溶着条件（主条件）は次に示す通り
である。 ブースター（振幅倍率） １．１ 溶着圧力 ２．１ｋｇ／ｃｍ2 溶着時間 ０．８秒 ダイナミックトリガー ４比較例１ 環状のシエアジョイント構造又は環状のパットジョイン
ト構造を利用した環状の溶着構造18、19を設けない他は
全く実施例１〜５と同態様のものを用いた。尚、溶着条
件（主条件）は実施例２、３、４と同じにした。この結
果は、表１に示している。Next, regarding the embodiment of the medical adsorption filter according to the present invention and the conventional one, water is introduced into the inside of the medical adsorption filter at a pressure of 0.5 kg / cm 2 after the medical adsorption filter is assembled. Then, a comparative experiment was performed for the presence or absence of water leakage.
Here, the medical adsorptive filter schematically shown in FIG. 1 is used. In Example 1, all the constituent members are formed of polypropylene, and the mesh 11 is formed to have a mesh size of 150 μm. In Examples 2 to 5, All components except mesh 11 are made of polycarbonate and mesh
11 is 150 μm aperture from polyethylene terephthalate
, And an experiment was performed for each. The mesh ring 6 used here is integrally formed as described above. Further, here, the housing body 1 and the inflow side cap 3 and the outflow side cap 5 and the holding ring 12 on the outer periphery of the mesh 11 are pressed while pressing the ultrasonic horn of the ultrasonic welding machine (model 8800, manufactured by Branson, USA). Welded by applying ultrasonic waves. Embodiment 1 As shown in FIG. 2, a housing body 1 and an inflow side cap 3
In addition, an annular welding structure 18 or 19 using an annular shear joint structure having an interference of 0.5 mm and a welding margin of 0.7 mm was provided on the outflow side cap 5 and the holding ring 12 on the outer periphery of the mesh ring 6. The welding conditions (main conditions) are as follows. Booster (amplitude magnification) 1: 1.5 Welding pressure 1.4 kg / cm 2 Welding time 1.0 second Dynamic trigger 3 Example 2 As shown in FIG.
Each of the two surfaces has a width of 0.3 m on the base end side.
m, a cross section having a height of 0.3 mm, forming a triangular annular ridge, provided with annular welding structures 18 and 19 utilizing an annular pat joint structure. The welding conditions (main conditions) are as follows. Booster (amplitude magnification) 1: 1.5 Welding pressure 2.1 kg / cm 2 Welding time 0.6 seconds Dynamic trigger 4 Example 3 Mesh ring 6 The width of the base end side on both surfaces of holding rings 12 and 12 on the outer periphery Was 0.5 mm, and the same shape as in Example 2 was used except that a cross-sectional shape having a height of 0.5 mm formed a triangular annular ridge. The welding conditions (main conditions) were the same as in Example 2. Embodiment 4 As shown in FIG. 4, the width of the base end side is 0.5 mm, and the height of the housing body 1 and the bottom of the fitting recesses 14 and 15 of the inflow-side cap 3 and the outflow-side cap 5 are 0.5 mm. Is 0.
A cross section of 5 mm formed a triangular annular ridge to provide annular welding structures 18 and 19. The welding conditions (main conditions) were the same as in Example 2. Fifth Embodiment A cross-sectional shape having a base end side width of 1.0 mm and a height of 1.0 mm was similarly formed on the edge of the housing body 1 and the bottoms of the fitting concave portions 14 and 15 of the inflow side cap 3 and the outflow side cap 5. Except that a triangular annular ridge was formed. The welding conditions (main conditions) are as follows. Booster (amplitude magnification) 1.1 Welding pressure 2.1 kg / cm 2 Welding time 0.8 seconds Dynamic trigger 4 Comparative example 1 Except that no provision was made, the same embodiment as in Examples 1 to 5 was used. The welding conditions (main conditions) were the same as in Examples 2, 3, and 4. The results are shown in Table 1.
【表１】 [Table 1]
【００２２】図示した実施例において、ハウジング本体
１とメッシュリング６外周の保持リング12間と流入側キ
ャップ３並びに流出側キャップ５とメッシュリング６外
周の保持リング12間に環状のパットジョイント構造を利
用した環状の溶着構造18、19を設ける場合、パットジョ
イント構造を構成する環状凸条を、一方はハウジング本
体１又は流入側キャップ３並びに流出側キャップ５側
に、又他方はメッシュリング６外周の保持リング12側に
設けることもできる。又、環状凸条を二条以上、位置を
ずらせて設けることも可能である。更に、環状凸条の断
面形状は三角形の他、四角形又は他の多角形に形成する
こともできる。又、断面形状を半円状に形成することも
可能である。更に、環状凸条を形成した他方にこれを密
嵌状態で嵌合させる環状凹条を形成することも適宜考慮
される。In the illustrated embodiment, an annular pad joint structure is used between the housing body 1 and the retaining ring 12 on the outer periphery of the mesh ring 6 and between the inflow side cap 3 and between the outflow side cap 5 and the retaining ring 12 on the outer periphery of the mesh ring 6. When the annular welded structures 18 and 19 are provided, one of the annular ridges constituting the pad joint structure is held on the housing body 1 or the inlet-side cap 3 and the outlet-side cap 5 side, and the other is held on the outer periphery of the mesh ring 6. It can also be provided on the ring 12 side. Further, it is also possible to provide two or more annular convex stripes at different positions. Further, the cross-sectional shape of the annular ridge may be formed in a quadrangle or another polygon in addition to a triangle. Further, it is also possible to form a semicircular cross section. Further, forming an annular concave streak in which the annular convex streak is tightly fitted to the other side may be considered.
【００２３】一方、これら環状の溶着構造18、19は環状
のシエアジョイント構造又はパットジョイント構造を利
用する他、従来から知られている他の環状の溶着構造、
例えば環状のビードジョイント構造等、環状に形成され
るならば、種々の構造が利用できる。On the other hand, these annular welding structures 18 and 19 use an annular shear joint structure or a pad joint structure, as well as other conventionally known annular welding structures,
For example, various structures can be used as long as they are formed in an annular shape, such as an annular bead joint structure.
【００２４】又、こうした環状の溶着構造18、19は、ハ
ウジングの流入側又は流出側の一方にだけ設けることも
できるが、この場合少なくとも流出側にだけは設けるこ
とが、処理後の体液中に異物が混入することが少なくな
る面から考慮される。Further, such annular welding structures 18 and 19 can be provided only on one of the inflow side and the outflow side of the housing. In this case, it is necessary to provide at least only on the outflow side so that the body fluid after the treatment can be provided. This is taken into consideration from the viewpoint that foreign substances are less likely to be mixed.
【００２５】更に、ハウジング本体１に充填口部16を設
けない態様に形成することも可能である。この場合、ハ
ウジング本体１一側に流入側キャップ３並びに流出側キ
ャップ５の一方を装着した後、ハウジング本体１内部に
他側を通じて吸着材７を充填し、最後にハウジング本体
１他側に流入側キャップ３並びに流出側キャップ５の他
方を装着する。Further, it is also possible to form the housing body 1 in a mode in which the filling port 16 is not provided. In this case, after one of the inflow-side cap 3 and the outflow-side cap 5 is attached to one side of the housing main body 1, the housing body 1 is filled with the adsorbent 7 through the other side, and finally, the inflow side cap is inserted into the other side of the housing main body 1. The other of the cap 3 and the outflow side cap 5 is mounted.
【００２６】[0026]
【発明の効果】以上のような本発明に係る医療用吸着濾
過器における体液の漏洩防止方法では、ハウジング内部
の所定の流路外にこれに連通する奥深い隙間が形成され
ることで、ここに異物が滞留して、ハウジング内部に流
入させて濾過処理した、特に処理後の体液中にこの隙間
に滞留した異物が混入する危険性が少なくなる。According to the method for preventing a body fluid from leaking in the medical adsorption filter according to the present invention as described above, a deep gap communicating with the predetermined flow path is formed outside the predetermined flow path inside the housing. Foreign matter stays and flows into the housing and is subjected to the filtration treatment. In particular, the risk of foreign matter staying in this gap being mixed in the body fluid after the treatment is reduced.
【００２７】又、ハウジング本体とメッシュ外周の保持
リング間と流入側キャップ並びに流出側キャップとメッ
シュ外周の保持リング間に環状のシエアジョイント構造
や環状のパットジョイント構造等を利用した環状の溶着
構造を予め形成するだけで、組立て工程は従来と比較し
て全く変更しないから、組立ての作業性が低下したり、
構成部材点数が多くなる問題もないのである。An annular welding structure utilizing an annular shear joint structure or an annular pad joint structure is provided between the housing body and the holding ring on the outer periphery of the mesh and between the inflow side cap and the outflow side cap and the holding ring on the outer periphery of the mesh. Since it is only formed in advance and the assembly process is not changed at all compared to the past, the workability of assembly is reduced,
There is no problem that the number of constituent members increases.
【図１】本発明に係る体液の漏洩防止を可能とした医療
用吸着濾過器の概略を示す一部を断面状態にした正面図FIG. 1 is a front view, partially in section, showing an outline of a medical adsorption filter capable of preventing body fluid leakage according to the present invention.
【図２】ハウジング本体とメッシュ外周の保持リング間
と流入側キャップ並びに流出側キャップとメッシュ外周
の保持リング間に設けられる環状の溶着構造の実施例を
示す断面図FIG. 2 is a cross-sectional view showing an embodiment of an annular welding structure provided between the housing body and the holding ring on the outer periphery of the mesh and between the inflow side cap and between the outflow side cap and the holding ring on the outer periphery of the mesh;
【図３】ハウジング本体とメッシュ外周の保持リング間
と流入側キャップ並びに流出側キャップとメッシュ外周
の保持リング間に設けられる環状の溶着構造の他の実施
例を示す断面図FIG. 3 is a cross-sectional view showing another embodiment of an annular welding structure provided between the housing body and the holding ring on the outer periphery of the mesh and between the inflow side cap and between the outflow side cap and the holding ring on the outer periphery of the mesh.
【図４】ハウジング本体とメッシュ外周の保持リング間
と流入側キャップ並びに流出側キャップとメッシュ外周
の保持リング間に設けられる環状の溶着構造の他の実施
例の変形例を示す断面図FIG. 4 is a cross-sectional view showing a modification of another embodiment of the annular welding structure provided between the housing body and the holding ring on the outer periphery of the mesh and between the inflow side cap and between the outflow side cap and the holding ring on the outer periphery of the mesh.
【図５】保持リングを示す斜視図FIG. 5 is a perspective view showing a retaining ring.
【図６】従来例の要部を示す断面図FIG. 6 is a sectional view showing a main part of a conventional example.
１ ハウジング本体 ２ 流入側ノズル ３ 流入側キャップ ４ 流出側ノズル ５ 流出側キャップ ６ メッシュリング ７ 吸着材 ８ 環状の溶着構造 ９ 環状の溶着構造 10 係合段部 11 メッシュ 12 保持リング 13 内リブ 14 嵌合凹部 15 嵌合凹部 16 充填口部 17 封止キャップ 18 環状の溶着構造 19 環状の溶着構造 DESCRIPTION OF SYMBOLS 1 Housing main body 2 Inflow side nozzle 3 Inflow side cap 4 Outflow side nozzle 5 Outflow side cap 6 Mesh ring 7 Adsorbent 8 Annular welding structure 9 Annular welding structure 10 Engagement step part 11 Mesh 12 Retaining ring 13 Inner rib 14 Fitting Mating recess 15 Mating recess 16 Filling port 17 Sealing cap 18 Annular welding structure 19 Annular welding structure
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−59543（ＪＰ，Ａ) 特開 昭52−116969（ＪＰ，Ａ) 特開 昭50−71198（ＪＰ，Ａ) 特開 昭63−197462（ＪＰ，Ａ) 特開 昭57−14350（ＪＰ，Ａ) 実開 昭60−49905（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) A61M 1/00 - 1/36 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-59543 (JP, A) JP-A-52-116969 (JP, A) JP-A-50-71198 (JP, A) JP-A 63-59 197462 (JP, A) JP-A-57-14350 (JP, A) JP-A-60-49905 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) A61M 1 / 00-1 / 36
Claims (13)
側に流入側ノズルを備えた流入側キャップ並びに流出側
ノズルを備えた流出側キャップをこれらの連接部近傍に
メッシュリングを横断的に配設して装着するとともに、
ハウジング本体内部の一対のメッシュリング間に吸着材
を充填した医療用吸着濾過器において、メッシュリング
を二つの保持リング間にメッシュ外周を挟み込んで一体
成形し、ハウジング本体両側に流入側キャップ並びに流
出側キャップをこれらの連接部近傍にメッシュリングを
横断的に配設して位置づけたときに、ハウジング本体と
メッシュリング外周の保持リング間、又流入側キャップ
並びに流出側キャップの双方又は一方とメッシュリング
外周の保持リング間にそれぞれ環状の接合部が形成され
る態様に構成して、これらの環状の接合部間に環状の溶
着構造を設け、ハウジング本体と流入側キャップ並びに
流出側キャップの双方又は一方とメッシュリング外周の
保持リングをそれぞれ溶着して一体化させることで、内
部に流入した体液がこれらの間に形成される隙間に漏洩
するのを防止した医療用吸着濾過器における体液の漏洩
防止方法。1. An inflow-side cap having an inflow-side nozzle and an outflow-side cap having an outflow-side nozzle on both sides of a cylindrical housing body having both sides opened. And wear it,
In a medical adsorption filter in which an adsorbent is filled between a pair of mesh rings inside a housing main body, a mesh ring is integrally formed by sandwiching a mesh outer periphery between two holding rings, and an inflow side cap and an outflow side are provided on both sides of the housing main body. When the cap is positioned by arranging the mesh ring transversely in the vicinity of these connecting portions, the gap between the housing body and the holding ring on the outer periphery of the mesh ring, or both or one of the inflow-side cap and the outflow-side cap and the outer periphery of the mesh ring may be provided. In the form in which an annular joint is formed between the holding rings, an annular welded structure is provided between these annular joints, and the housing body and one or both of the inflow side cap and the outflow side cap are provided. Body fluid that has flowed into the inside by welding and integrating the retaining rings around the mesh ring Leakage prevention method of a body fluid in preventing medical suction filter from leaking into the gap formed between these.
側に流入側ノズルを備えた流入側キャップ並びに流出側
ノズルを備えた流出側キャップをこれらの連接部近傍に
メッシュリングを横断的に配設して装着するとともに、
ハウジング本体内部の一対のメッシュリング間に吸着材
を充填した医療用吸着濾過器で、メッシュリングを二つ
の保持リング間にメッシュ外周を挟み込んで一体成形
し、ハウジング本体両側に流入側キャップ並びに流出側
キャップをこれらの連接部近傍にメッシュリングを横断
的に配設して位置づけたときに、ハウジング本体とメッ
シュリング外周の保持リング間、又流入側キャップ並び
に流出側キャップの双方又は一方とメッシュリング外周
の保持リング間にそれぞれ環状の接合部が形成される態
様に構成して、これらの環状の接合部間に環状の溶着構
造を設け、ハウジング本体と流入側キャップ並びに流出
側キャップの双方又は一方とメッシュリング外周の保持
リングをそれぞれ溶着して一体化させた体液の漏洩防止
を可能とした医療用吸着濾過器。2. An inflow-side cap having an inflow-side nozzle and an outflow-side cap having an outflow-side nozzle on both sides of a cylindrical housing main body having both sides opened. And wear it,
A medical adsorptive filter filled with an adsorbent between a pair of mesh rings inside the housing body. The mesh rings are integrally formed by sandwiching the outer periphery of the mesh between the two holding rings, and the inflow side cap and the outflow side are provided on both sides of the housing body. When the cap is positioned by arranging the mesh ring transversely in the vicinity of these connecting portions, the gap between the housing body and the holding ring on the outer periphery of the mesh ring, or both or one of the inflow-side cap and the outflow-side cap and the outer periphery of the mesh ring may be provided. In the form in which an annular joint is formed between the holding rings, an annular welded structure is provided between these annular joints, and the housing body and one or both of the inflow side cap and the outflow side cap are provided. Medical use that enables the prevention of body fluid leakage by integrating the retaining rings around the mesh ring. Wearing filter.
ョイント構造又は環状のビードジョイント構造を利用し
た請求項２記載の体液の漏洩防止を可能とした医療用吸
着濾過器。3. The medical adsorption filter according to claim 2, wherein an annular shear joint structure or an annular bead joint structure is used as the annular welding structure.
ョイント構造を利用した請求項２記載の体液の漏洩防止
を可能とした医療用吸着濾過器。4. The medical adsorptive filter according to claim 2, wherein an annular pad joint structure is used as the annular welding structure.
環状凸条の断面形状を多角形に形成した請求項４記載の
体液の漏洩防止を可能とした医療用吸着濾過器。5. The medical adsorption filter according to claim 4, wherein the annular ridge forming the annular pad joint structure has a polygonal cross-sectional shape.
流出側キャップの双方又は一方の間に環状の溶着構造を
設けた請求項２〜５のいずれかに記載の体液の漏洩防止
を可能とした医療用吸着濾過器。6. The medical device according to claim 2, wherein an annular welding structure is provided between the housing main body and at least one of the inflow-side cap and the outflow-side cap. Adsorption filter.
形成された請求項２〜６のいずれかに記載の体液の漏洩
防止を可能とした医療用吸着濾過器。7. The medical adsorption filter according to claim 2, wherein all the constituent members are formed of the same synthetic resin body.
成された請求項７記載の体液の漏洩防止を可能とした医
療用吸着濾過器。8. The medical adsorptive filter according to claim 7, wherein all the constituent members are formed of polypropylene.
形成された請求項７記載の体液の漏洩防止を可能とした
医療用吸着濾過器。9. The medical adsorptive filter according to claim 7, wherein all the constituent members are formed of polycarbonate.
の合成樹脂体から形成されるとともに、メッシュがこれ
らと異種の合成樹脂体から形成された請求項２〜６のい
ずれかに記載の体液の漏洩防止を可能とした医療用吸着
濾過器。10. The bodily fluid according to claim 2, wherein all the constituent members except the mesh are formed from the same synthetic resin body, and the mesh is formed from a synthetic resin body different from these. Medical adsorption filter that can prevent leakage.
プロピレンから形成された請求項１０記載の体液の漏洩
防止を可能とした医療用吸着濾過器。11. The medical adsorptive filter according to claim 10, wherein all the constituent members except the mesh are formed of polypropylene.
カーボネイトから形成された請求項１０記載の体液の漏
洩防止を可能とした医療用吸着濾過器。12. The adsorptive filter for medical use according to claim 10, wherein all the constituent members except the mesh are formed of polycarbonate.
カーボネイトから形成されるとともに、メッシュがポリ
エステルから形成された請求項１２記載の体液の漏洩防
止を可能とした医療用吸着濾過器。13. The medical adsorptive filter according to claim 12, wherein all the components except the mesh are formed of polycarbonate, and the mesh is formed of polyester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23639092A JP3240702B2 (en) | 1992-08-11 | 1992-08-11 | Method for preventing leakage of body fluid in medical adsorption filter and medical adsorption filter capable of preventing leakage of body fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23639092A JP3240702B2 (en) | 1992-08-11 | 1992-08-11 | Method for preventing leakage of body fluid in medical adsorption filter and medical adsorption filter capable of preventing leakage of body fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0654905A JPH0654905A (en) | 1994-03-01 |
| JP3240702B2 true JP3240702B2 (en) | 2001-12-25 |
Family
ID=17000066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23639092A Expired - Lifetime JP3240702B2 (en) | 1992-08-11 | 1992-08-11 | Method for preventing leakage of body fluid in medical adsorption filter and medical adsorption filter capable of preventing leakage of body fluid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3240702B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6811679B2 (en) | 2003-03-28 | 2004-11-02 | Council Of Scientific & Industrial Research | Process for electrochemical oxidation of bromide to bromine |
| JP2008119519A (en) * | 2008-02-12 | 2008-05-29 | Kaneka Corp | Filter for prevention of filler outflow and absorber equipped with the filter |
-
1992
- 1992-08-11 JP JP23639092A patent/JP3240702B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0654905A (en) | 1994-03-01 |
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