JP4727974B2 - Transducer filter and extracorporeal circuit - Google Patents

Transducer filter and extracorporeal circuit Download PDF

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JP4727974B2
JP4727974B2 JP2004344166A JP2004344166A JP4727974B2 JP 4727974 B2 JP4727974 B2 JP 4727974B2 JP 2004344166 A JP2004344166 A JP 2004344166A JP 2004344166 A JP2004344166 A JP 2004344166A JP 4727974 B2 JP4727974 B2 JP 4727974B2
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housing
filter
top surface
support
welded
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JP2006149635A (en
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征秀 藤井
良 野嶋
祐治 安部
光寿 佐藤
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Kawasumi Laboratories Inc
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Description

本発明は、人工透析、血漿交換、腹水処理等の際に使用される体外循環回路と透析装置等の圧力計（圧力調整器）との間に配置されるトランスデューサーフィルターの改良に関する。   The present invention relates to an improvement in a transducer filter disposed between an extracorporeal circuit used in artificial dialysis, plasma exchange, ascites treatment, and a pressure gauge (pressure regulator) such as a dialysis machine.

例えば特許文献１に記載のトランスデューサーフィルターは、圧力モニターライン（体外循環回路）側のハウジングと透析装置側のハウジングの間にシート状のフィルターを挟み込み、当該フィルターを超音波により、ハウジングに固定している。しかしながらこれらの構造では、フィルターをハウジングの溝に面で固定するため、固定強度が十分ではない。   For example, in the transducer filter described in Patent Document 1, a sheet-like filter is sandwiched between a housing on the pressure monitor line (extracorporeal circuit) side and a housing on the dialyzer side, and the filter is fixed to the housing by ultrasonic waves. ing. However, in these structures, since the filter is fixed to the groove of the housing by the surface, the fixing strength is not sufficient.

また特許文献２及び３にも、トランスデューサーフィルターと類似形状の液体ろ過フィルターが記載されている。当該フィルターは、二つのハウジングの間にフィルターをほぼ全面に亘って挟持する構造のため、フィルターに負荷がかかり、当該構造をトランスデューサーフィルターに採用すると品質安定性に欠ける。   Patent Documents 2 and 3 also describe a liquid filtration filter having a shape similar to that of a transducer filter. Since the filter has a structure in which the filter is sandwiched between the two housings over almost the entire surface, a load is applied to the filter, and when the structure is used for a transducer filter, quality stability is lacking.

特開２００１−１２９０７９号公報（第１図、［０００４］、［０００５］）JP 2001-129079 A (FIG. 1, [0004], [0005]) 特開平６−７６４８号公報（第１図、要約）Japanese Patent Laid-Open No. 6-7648 (FIG. 1, summary) 特表平９−５０９３６１（第１図）Special table hei 9-509361 (Fig. 1)

解決しようとする問題点は、フィルターをハウジングの溝に面で固定するため、固定強度が十分ではない点、また、二つのハウジングの間にフィルターをほぼ全面に亘って挟持する構造のため、フィルターに負荷がかかり、当該構造をトランスデューサーフィルターに採用すると品質安定性に欠ける点である。   The problems to be solved are that the filter is fixed to the groove of the housing by the surface, and the fixing strength is not sufficient, and because the filter is sandwiched between the two housings almost entirely, the filter When this structure is applied to a transducer filter, quality stability is lacking.

そこで本発明者は以上の課題を解決するために、鋭意検討を重ねた結果次の発明に到達した。
［１］本発明は、体外循環回路側の第一ハウジング（２）と、透析装置側の第二ハウジング（２２）とを有し、
前記第一ハウジング（２）と前記第二ハウジング（２２）は、それぞれ略円筒状の第一支持部（４）と第二支持部（２４）並びに管状の第一接続部（３）と第二接続部（２３）とを有し、
前記第一支持部（４）と第二支持部（２４）は、長手方向と、当該長手方向と略垂直に交わる側部円周方向とを有し、前記長手方向は、天面部と底面部とを有し、
前記第一接続部（３）と第二接続部（２３）は、長手方向と、当該長手方向と略垂直に交わる側部円周方向とを有し、前記長手方向は、天面部と底面部とを有し、
前記第一支持部（４）と第二支持部（２４）の底面部に、それぞれ前記第一接続部（３）と第二接続部（２３）を突設し、
前記第一ハウジング（２）の第一支持部（４）の天面部に、
前記側部円周方向の内側から外側に向けて、順次、環状の第一挟持部（５）及び第一溶着部（９）を形成し、
前記第一挟持部（５）は天面に、第一階段部（Ｋ１）を形成し、
前記天面部方向を高い位置としてみた場合、当該第一階段部（Ｋ１）は、前記側部円周方向の内側から外側に向けて、高くなるように形成し、
前記第一溶着部（９）は、前記側部円周方向の内側から外側に向けて、
順次、第一段部（Ｄ１）及び凹部（Ｍ）を形成し、
前記天面部方向を高い位置としてみた場合、
前記第一段部（Ｄ１）は、前記第一階段部（Ｋ１）の最も低い部分よりも低い位置に形成し、
前記第二ハウジング（２２）の第二支持部（２４）の天面部に、前記側部円周方向の内側から外側に向けて、順次、環状の第二挟持部（２５）及び第二溶着部（２９）を形成し、
前記第二挟持部（２５）は天面に、第二階段部（Ｋ２）を形成し、
前記天面部方向を高い位置としてみた場合、当該第二階段部（Ｋ２）は、前記側部円周方向の内側から外側に向けて、低くなるように形成し、
前記第二溶着部（２９）は、前記側部円周方向の内側から外側に向けて、順次、第二段部（Ｄ２）及び凸部（Ｔ）を形成し、前記天面部方向を高い位置としてみた場合、前記第二段部（Ｄ２）は、前記第二階段部（Ｋ２）の最も高い部分よりも高い位置に形成し、
フィルタ（Ｆ）を、前記第一支持部（４）と前記第二支持部（２４）との間に配置し、
前記フィルタ（Ｆ）の外周縁部を、前記第一溶着部（９）の前記第一段部（Ｄ１）及び前記第一挟持部（５）の第一階段部（Ｋ１）と、前記第二溶着部（２９）の第二段部（Ｄ２）及び前記第二挟持部（２５）の第二階段部（Ｋ２）との間に配置し、
超音波、ヒータ、レーザーのいずれかの手段により、
前記第一溶着部（９）の第一段部（Ｄ１）及び凹部（Ｍ）、並びに前記第二溶着部（２９）の第二段部（Ｄ２）及び凸部（Ｔ）を溶融することにより、
前記第一段部（Ｄ１）及び前記凹部（Ｍ）は前記第一溶着部（９）に吸収され、前記第二段部（Ｄ２）及び前記凸部（Ｔ）は前記第二溶着部（２９）に吸収され、前記第一溶着部（９）と前記第二溶着部（２９）とを溶着し、
前記フィルター（Ｆ）の外周縁部を、前記第一階段部（Ｋ１）と前記第二階段部（Ｋ２）との間で挟持固定したトランスデューサフィルターを提供する。
［２］本発明は、前記体外循環回路側の第一ハウジング（２）は、前記透析装置側の第二ハウジング（２２）として使用され、
前記透析装置側の第二ハウジング（２２）は、前記体外循環回路側の第一ハウジング（２）として使用される、［１］に記載のトランスデューサーフィルター（１）を提供する。
［３］本発明は、［１］または［２］に記載のトランスデューサーフィルター（１）を装着した体外循環回路を提供する。
Therefore, as a result of intensive studies to solve the above problems, the present inventor has reached the following invention.
[1] The present invention has a first housing (2) on the extracorporeal circuit side and a second housing (22) on the dialyzer side,
The first housing (2) and the second housing (22) have a substantially cylindrical first support part (4) and a second support part (24), and a tubular first connection part (3) and a second one, respectively. A connecting portion (23),
Said 1st support part (4) and 2nd support part (24) have a longitudinal direction and the side part circumferential direction which cross | intersects the said longitudinal direction substantially perpendicularly, The said longitudinal direction is a top | upper surface part and a bottom face part. And
Said 1st connection part (3) and 2nd connection part (23) have a longitudinal direction and the side part circumferential direction which cross | intersects the said longitudinal direction substantially perpendicularly, The said longitudinal direction is a top | upper surface part and a bottom face part. And
The first connection part (3) and the second connection part (23) are respectively projected from the bottom surfaces of the first support part (4) and the second support part (24),
On the top surface portion of the first support portion (4) of the first housing (2),
From the inner side to the outer side in the lateral direction of the side, an annular first sandwiching part (5) and a first welding part (9) are sequentially formed,
The first clamping part (5) forms a first step part (K1) on the top surface,
When the top surface portion direction is viewed as a high position, the first staircase portion (K1) is formed so as to increase from the inside to the outside in the side portion circumferential direction,
The first welded portion (9) is directed from the inner side to the outer side in the side portion circumferential direction.
Sequentially, the first step (D1) and the recess (M) are formed,
When the top surface direction is viewed as a high position,
The first step portion (D1) is formed at a position lower than the lowest portion of the first step portion (K1),
An annular second sandwiching portion (25) and a second welding portion are sequentially formed on the top surface portion of the second support portion (24) of the second housing (22) from the inner side to the outer side in the side portion circumferential direction. (29) is formed,
The second clamping part (25) forms a second step part (K2) on the top surface,
When the top surface direction is viewed as a high position, the second stepped portion (K2) is formed so as to become lower from the inner side to the outer side in the side circumferential direction,
The second welded portion (29) sequentially forms a second step portion (D2) and a convex portion (T) from the inner side to the outer side in the side portion circumferential direction, and the top surface portion direction is a high position. The second step portion (D2) is formed at a position higher than the highest portion of the second step portion (K2),
The filter (F) is disposed between the first support part (4) and the second support part (24),
The outer peripheral edge portion of the filter (F) is connected to the first step portion (D1) of the first welded portion (9) and the first step portion (K1) of the first clamping portion (5), and the second step. It arrange | positions between the 2nd step part (K2) of the 2nd step part (D2) of said welding part (29), and said 2nd clamping part (25),
By any means of ultrasonic, heater, laser,
By melting the first step portion (D1) and the concave portion (M) of the first welded portion (9), and the second step portion (D2) and the convex portion (T) of the second welded portion (29). ,
Said 1st step part (D1) and said recessed part (M) are absorbed by said 1st welding part (9), and said 2nd step part (D2) and said convex part (T) are said 2nd welding part (29). ), The first welded portion (9) and the second welded portion (29) are welded,
A transducer filter is provided in which the outer peripheral edge of the filter (F) is sandwiched and fixed between the first stepped portion (K1) and the second stepped portion (K2).
[2] In the present invention, the first housing (2) on the extracorporeal circuit side is used as the second housing (22) on the dialyzer side,
The second housing (22) on the dialyzer side provides the transducer filter (1) according to [1], which is used as the first housing (2) on the extracorporeal circuit side .
[ 3 ] The present invention provides an extracorporeal circuit equipped with the transducer filter (1) according to [1] or [ 2 ].

本発明のトランスデューサーフィルター１は、フィルターＦの外縁部を階段部Ｋの複数の凹凸で挟持するものであるから、フィルターＦを強固にハウジング２、２２間に固定できる。このためフィルターＦの品質（性能）を安定化することができる。またフィルターＦにかかる空気圧等の負荷も著しく軽減されるので、耐久性に優れる。   Since the transducer filter 1 of the present invention sandwiches the outer edge portion of the filter F with a plurality of irregularities of the stepped portion K, the filter F can be firmly fixed between the housings 2 and 22. For this reason, the quality (performance) of the filter F can be stabilized. Further, since the load such as air pressure applied to the filter F is remarkably reduced, the durability is excellent.

図１と図２は本発明のトランスデューサーフィルター１の一例を示す断面図（図１は接合前、図２は接合後）、図３（Ａ）は（体外循環回路側）ハウジング２の側面図、（Ｂ）は（Ａ）のＡ矢視図（天面図）、（Ｃ）は（Ａ）のＢ矢視図（底面図）、図４は図３（Ｂ）のＡ−Ｏ−Ａ´断面図、図５は図４の一部拡大断面図、図６の（Ａ）は（透析装置側）ハウジング２２の側面図、（Ｂ）は（Ａ）のＡ矢視図（天面図）、（Ｃ）は（Ａ）のＢ矢視図（底面図）、図７は図６（Ｂ）のＡ−Ｏ−Ａ´断面図、図８は図７の一部拡大図である。   1 and 2 are sectional views showing an example of the transducer filter 1 of the present invention (FIG. 1 is before joining, FIG. 2 is after joining), and FIG. 3 (A) is a side view of the housing 2 (extracorporeal circuit side). , (B) is a view from the arrow A (top view) of (A), (C) is a view from the arrow B (bottom view) of (A), and FIG. 4 is A-O-A of FIG. ′ Sectional view, FIG. 5 is a partially enlarged sectional view of FIG. 4, FIG. 6A is a side view of the housing 22 (dialyzer side), and FIG. 5B is a view from the arrow A of FIG. ), (C) is a view (bottom view) of FIG. 7 (B), FIG. 7 is a cross-sectional view taken along the line A-O-A ′ of FIG. 6 (B), and FIG.

本発明のトランスデューサーフィルター１は、体外循環回路側の第一ハウジング２と透析装置側の第二ハウジング２２との間にフィルターＦを配置したトランスデューサーフィルター１である。
第一ハウジング２と第二ハウジング２２は、それぞれ略円筒状の第一支持部４と第二支持部２４並びに管状の第一接続部３と第二接続部２３とを有する。
第一支持部４と第二支持部２４は、長手方向と、当該長手方向と略垂直に交わる側部円周方向とを有し、前記長手方向は、天面部と底面部とを有する。
第一接続部３と第二接続部２３は、長手方向と、当該長手方向と略垂直に交わる側部円周方向とを有し、前記長手方向は、天面部と底面部とを有する。
第一支持部４と第二支持部２４の底面部に、それぞれ第一接続部３と第二接続部２３を突設している。
第一ハウジング２の第一支持部４と第二ハウジング２２の第二支持部２４のそれぞれの対向する天面に、フィルターＦの第一挟持部５と第二挟持部２５を形成（突設）し、当該第一挟持部５と第二挟持部２５の外周に、第一溶着部９と第二溶着部２９を形成している。
さらに第一挟持部５と第二挟持部２５の対向する天面に、第一階段部Ｋ１と第二階段部Ｋ２を形成し、当該第一階段部Ｋ１と、第二階段部Ｋ２を構成する複数の凹凸（突部、溝部）によりフィルターＦの外周縁部を挟持したものである。
本発明の説明では、便宜上、第一ハウジング２を体外循環回路側、第二ハウジング２２を透析装置側とするが、第一ハウジング２を透析装置側、第二ハウジング２２を体外循環回路側のハウジングとしても使用することができる。
第一ハウジング２と第二ハウジング２２は、それぞれ先細りのテーパーに形成した管状の第一接続部３と第二接続部２３を、それぞれ略円筒状の第一支持部４と第二支持部２４の底部略中央に一体に突設している。
第一接続部３と第二接続部２３から第一支持部４と第二支持部２４内部に亘って流体（空気、血液等）の第一流路６と第二流路２６が形成されている。
また第一支持部４と第二支持部２４の天面略中央に、それぞれ第一凹部１０と第二凹部３０が形成され、当該第一凹部１０と第二凹部３０の空間に、第一の空気圧緩衝部材７、２７と第二の空気圧緩衝部材８、２８が配置されている。
The transducer filter 1 of the present invention is a transducer filter 1 in which a filter F is disposed between a first housing 2 on the extracorporeal circuit side and a second housing 22 on the dialyzer side .
The first housing 2 and the second housing 22 have a substantially cylindrical first support portion 4 and a second support portion 24, and a tubular first connection portion 3 and a second connection portion 23, respectively.
The 1st support part 4 and the 2nd support part 24 have a longitudinal direction and the side part circumferential direction which cross | intersects the said longitudinal direction substantially perpendicularly | vertically, and the said longitudinal direction has a top | upper surface part and a bottom face part.
The 1st connection part 3 and the 2nd connection part 23 have a longitudinal direction and the side part circumferential direction which cross | intersects the said longitudinal direction substantially perpendicularly, The said longitudinal direction has a top | upper surface part and a bottom face part.
A first connection portion 3 and a second connection portion 23 are provided so as to protrude from the bottom surfaces of the first support portion 4 and the second support portion 24, respectively.
The first sandwiching portion 5 and the second sandwiching portion 25 of the filter F are formed (projected) on the facing top surfaces of the first support portion 4 of the first housing 2 and the second support portion 24 of the second housing 22, respectively. And the 1st welding part 9 and the 2nd welding part 29 are formed in the outer periphery of the said 1st clamping part 5 and the 2nd clamping part 25. As shown in FIG.
Furthermore , the 1st staircase part K1 and the 2nd staircase part K2 are formed in the top | upper surface which the 1st clamping part 5 and the 2nd clamping part 25 oppose , and the said 1st staircase part K1 and the 2nd staircase part K2 are comprised. a plurality of irregularities (projections, grooves) is obtained by sandwiching the outer circumferential edge of the filter F by.
In the description of the present invention, for convenience, the first housing 2 is the extracorporeal circuit side and the second housing 22 is the dialyzer side, but the first housing 2 is the dialyzer side and the second housing 22 is the extracorporeal circuit side housing. Can also be used.
The first housing 2 and the second housing 22 are respectively formed by connecting the tubular first connection portion 3 and the second connection portion 23 formed in a tapered taper to the substantially cylindrical first support portion 4 and the second support portion 24 , respectively. It protrudes integrally at the center of the bottom.
A first flow path 6 and a second flow path 26 for fluid (air, blood, etc.) are formed from the first connection portion 3 and the second connection portion 23 to the inside of the first support portion 4 and the second support portion 24 . .
Also a top surface substantially center of the first support portion 4 and the second support portion 24, a first recess 10 a second recess 30 are formed respectively, in the space between said first recess 10 a second recess 30, the first Pneumatic cushioning members 7 and 27 and second pneumatic cushioning members 8 and 28 are arranged.

［第一ハウジング２、第一挟持部５、第一溶着部９］
第一ハウジング２の第一支持部４の天面部に、側部円周方向の内側から外側に向けて、順次、環状の第一挟持部５及び第一溶着部９を形成している。
さらに第一挟持部５は天面に、第一階段部Ｋ１を形成し、天面部方向を高い位置としてみた場合、第一階段部Ｋ１は、図１、図５に例示するように側部円周方向の内側から外側に向けて、高くなるように形成している。
第一溶着部９は、図１、図５に例示するように側部円周方向の内側から外側に向けて、順次、第一段部Ｄ１及び凹部Ｍを形成している。
天面部方向を高い位置としてみた場合、第一段部Ｄ１は、図１、図５に例示するように第一階段部Ｋ１の最も低い部分よりも低い位置に形成されている。
［第二ハウジング２２、第二支持部２５、第一溶着部２９］
第二ハウジング２２の第二支持部２４の天面部に、側部円周方向の内側から外側に向けて、順次、環状の第二挟持部２５及び第二溶着部２９を形成している。
第二挟持部２５は天面に、第二階段部Ｋ２を形成し、天面部方向を高い位置としてみた場合、第二階段部Ｋ２は、図１、図８に例示するように側部円周方向の内側から外側に向けて、低くなるように形成している。
第二溶着部２９は、図１、図８に例示するように側部円周方向の内側から外側に向けて、順次、第二段部Ｄ２及び凸部Ｔを形成している。
天面部方向を高い位置としてみた場合、第二段部Ｄ２は、図１、図８に例示するように第二階段部Ｋ２の最も高い部分よりも高い位置に形成されている。
以上の第一挟持部５と第二挟持部２５の第一階段部Ｋ１と第二階段部Ｋ２の説明は、図１、図５、図８における例示であり、フィルターＦを強固に第一ハウジング２と第二ハウジング２２との間に固定できる形態であれば何でも採用することができる。
以上の第一溶着部９と第二溶着部２９の説明は、図１、図５、図８における例示であり、前記第一階段部Ｋ１、第二階段部Ｋ２とともに、フィルターＦを強固に第一ハウジング２と第二ハウジング２２との間に固定できる形態であれば何でも採用することができる。
 [First housing 2, first clamping part 5, first welding part 9]
An annular first sandwiching portion 5 and a first welded portion 9 are sequentially formed on the top surface portion of the first support portion 4 of the first housing 2 from the inner side to the outer side in the side circumferential direction.
Furthermore, when the 1st clamping part 5 forms the 1st staircase part K1 in the top | upper surface and the top | upper surface part direction is made into a high position, the 1st staircase part K1 is a side part circle so that it may illustrate in FIG. 1, FIG. It forms so that it may become high toward the outer side from the inner side of the circumferential direction.
As illustrated in FIGS. 1 and 5, the first welded portion 9 sequentially forms a first step portion D1 and a concave portion M from the inner side to the outer side in the side portion circumferential direction.
When the top surface direction is viewed as a high position, the first step portion D1 is formed at a position lower than the lowest portion of the first step portion K1, as illustrated in FIGS.
[Second housing 22, second support portion 25, first welded portion 29]
An annular second sandwiching portion 25 and a second welding portion 29 are sequentially formed on the top surface portion of the second support portion 24 of the second housing 22 from the inner side to the outer side in the side portion circumferential direction.
When the second pinching portion 25 forms a second stepped portion K2 on the top surface and the top surface portion direction is regarded as a high position, the second stepped portion K2 has a side circumference as illustrated in FIGS. It is formed so as to become lower from the inner side to the outer side in the direction.
As illustrated in FIGS. 1 and 8, the second welded portion 29 sequentially forms a second step portion D <b> 2 and a convex portion T from the inner side to the outer side in the side portion circumferential direction.
When the top surface portion direction is viewed as a high position, the second step portion D2 is formed at a position higher than the highest portion of the second stepped portion K2, as illustrated in FIGS.
Above the first clamping portion 5 and the first stepped portion K1 of the second clamping portion 25 described in the second stepped portion K2 is 1, 5, are exemplary in FIG. 8, rigidly first housing a filter F Any configuration that can be fixed between the second housing 22 and the second housing 22 can be adopted.
Above the first welding portion 9 and the description of the second welded portion 29, FIG. 1, FIG. 5 is illustrative in FIG. 8, the first stepped portion K1, together with a second stepped portion K2, firmly first filter F Any configuration that can be fixed between the first housing 2 and the second housing 22 can be adopted.

［フィルターＦの固定］
フィルターＦは、第一支持部４と第二支持部２４との間に配置され、例えば超音波、接触ヒータ、レーザー等により第一溶着部９と第二溶着部２９を溶着することにより、第一挟持部５と第二挟持部２５の第一階段部Ｋ１と第二階段部Ｋ２との間で強固に押さえ込まれて挟持される。
さらに詳述すればフィルタＦを、第一支持部４と第二支持部２４との間に配置し、フィルタＦの外周縁部を、第一溶着部９の第一段部Ｄ１及び第一挟持部５の第一階段部Ｋ１と、第二溶着部２９の第二段部Ｄ２及び第二挟持部２５の第二階段部Ｋ２との間に配置する。
続いて超音波、ヒータ、レーザーのいずれかの手段により、例えば超音波の場合、第二ハウジング２２の底部側から超音波発振して、第一溶着部９の第一段部Ｄ１及び凹部Ｍ、並びに第二溶着部２９の第二段部Ｄ２及び凸部Ｔを溶融する。これにより第一段部Ｄ１及び凹部Ｍは第一溶着部９に吸収され、第二段部Ｄ２及び凸部Ｔは第二溶着部２９に吸収され、第一溶着部９と第二溶着部２９とを溶着する。
このようにしてフィルターＦは、第一挟持部５と第二挟持部２５の第一階段部Ｋ１と第二階段部Ｋ２との間で強固に押さえ込まれて挟持される。
以上のように二つの第一ハウジング２と第二ハウジング２２との間に、全面に亘って挟持固定するものではなく、外周縁部で挟持固定するものであるから、フィルターＦにかかる負荷を軽減することができ、フィルターＦの品質（性能）を安定化することができる。
[Fix filter F]
The filter F is disposed between the first support portion 4 and the second support portion 24. For example, the first weld portion 9 and the second weld portion 29 are welded by ultrasonic waves, a contact heater, a laser, or the like, so that the first Between the first staircase portion K1 and the second staircase portion K2 of the one sandwiching portion 5 and the second sandwiching portion 25, they are firmly pressed and sandwiched.
More specifically, the filter F is disposed between the first support portion 4 and the second support portion 24, and the outer peripheral edge portion of the filter F is connected to the first step portion D 1 and the first clamping portion 9 of the first weld portion 9. It arrange | positions between the 1st step part K1 of the part 5, and the 2nd step part D2 of the 2nd welding part 29, and the 2nd step part K2 of the 2nd clamping part 25. FIG.
Subsequently, ultrasonic waves are oscillated from the bottom side of the second housing 22 by any means of ultrasonic waves, heaters, and lasers, for example, in the case of ultrasonic waves, and the first step portion D1 and the concave portion M of the first welded portion 9. And the 2nd step part D2 and the convex part T of the 2nd welding part 29 are fuse | melted. Accordingly, the first step portion D1 and the concave portion M are absorbed by the first welded portion 9, and the second step portion D2 and the convex portion T are absorbed by the second welded portion 29, so that the first welded portion 9 and the second welded portion 29 are absorbed. And weld.
In this way, the filter F is firmly pressed and clamped between the first stepped portion K1 and the second stepped portion K2 of the first holding portion 5 and the second holding portion 25 .
As described above , the load applied to the filter F is reduced because the first housing 2 and the second housing 22 are not sandwiched and fixed over the entire surface but are sandwiched and fixed at the outer peripheral edge. And the quality (performance) of the filter F can be stabilized.

［第一の空気圧緩衝部材７と第２の空気圧緩衝部材８］
本発明では、第一の空気圧緩衝部材７と第二の空気圧緩衝部材８は、少なくとも体外循環回路側の第一ハウジング２の第一支持部４に形成すれば良い。
図３から図５、図６から図８に例示するように、第一の空気圧緩衝部材７、２７は、第一支持部４と第二支持部２４のほぼ中央部に配置され、さらに第二の空気圧緩衝部材８、２８は、第一の空気圧緩衝部材７、２７を取り囲むように、その外周（外側とも言う）に配置されている。
[First pneumatic cushioning member 7 and second pneumatic cushioning member 8]
In the present invention, the first air pressure buffer member 7 and the second air pressure buffer member 8 may be formed at least on the first support portion 4 of the first housing 2 on the extracorporeal circuit side.
As illustrated in FIG. 3 to FIG. 5 and FIG. 6 to FIG. 8, the first pneumatic cushioning members 7 and 27 are disposed substantially at the center of the first support portion 4 and the second support portion 24 . The pneumatic shock absorbers 8 and 28 are arranged on the outer periphery (also referred to as the outside) so as to surround the first pneumatic shock absorbers 7 and 27.

また図１から図６に示すように、第一ハウジング２の第一支持部４天面の第一の空気圧緩衝部材７、２７と第二の空気圧緩衝部材８、２８の外縁には、フィルターＦの第一挟持部５が形成（突設）され、さらに当該第一挟持部５の外縁には、第一溶着部９が形成されている。
また図１から図２、図６から図８に示すように、第二ハウジング２２の第二支持部２４天面の第一の空気圧緩衝部材７、２７と第二の空気圧緩衝部材８、２８の外縁には、フィルターＦの第二挟持部２５が形成（突設）され、さらに当該第二挟持部２５の外縁には、第二溶着部２９が形成されている。
As shown in FIGS. 1 to 6, a filter F is provided on the outer edges of the first air pressure buffer members 7 and 27 and the second air pressure buffer members 8 and 28 on the top surface of the first support portion 4 of the first housing 2. The first clamping part 5 is formed (projected), and a first welded part 9 is formed on the outer edge of the first clamping part 5 .
As shown in FIGS. 1 to 2 and FIGS. 6 to 8, the first air pressure buffer members 7 and 27 and the second air pressure buffer members 8 and 28 on the top surface of the second support 24 of the second housing 22 are provided. A second sandwiching portion 25 of the filter F is formed (projected) at the outer edge, and a second welded portion 29 is formed at the outer edge of the second sandwiching portion 25 .

第一の空気圧緩衝部材７、２７は、図３から図５の例示では、縦断面が板状（矩形状）に形成され、第一支持部４と第二支持部２４の天面方向から見て、略十字状となるように４片を組み合わせて形成されているが、空気圧が直接フィルターＦに衝突するの防ぎ、緩衝できる形状であれば何でも良い。
第一支持部４と第二支持部２４の天面方向から見て、例えば円状、環状、格子状であっても良い。
また第二の空気圧緩衝部材８、２８は、図６から図８の例示では、縦断面が板状（矩形状）に形成され、第一支持部４と第二支持部２４の天面方向から見て、４片が第一支持部４と第二支持部２４の中心Ｏ方向に放射状に配置されているが、第一の空気圧緩衝部材７、２７で緩衝された空気圧をさらに緩衝できる形状であれば何でも良い。第一支持部４と第二支持部２４の天面方向から見て、例えば、環状であっても良い。
なお図３から図８の例示では、十字状の第一の空気圧緩衝部材７、２７の各片の間に、第二の空気圧緩衝部材８、２８の各片が、重ならないように交互に配置されている。
In the illustrations of FIGS. 3 to 5, the first pneumatic buffer members 7 and 27 are formed in a plate shape (rectangular shape) in the longitudinal section, and are viewed from the top surface direction of the first support portion 4 and the second support portion 24. The four pieces are combined to form a substantially cross shape, but any shape that can prevent and buffer the air pressure directly against the filter F may be used.
When viewed from the top surface direction of the first support portion 4 and the second support portion 24 , for example, a circular shape, an annular shape, or a lattice shape may be used.
Further, in the illustrations of FIGS. 6 to 8, the second pneumatic shock-absorbing members 8 and 28 are formed in a plate shape (rectangular shape) in the longitudinal section, and from the top surface direction of the first support portion 4 and the second support portion 24. As seen, the four pieces are arranged radially in the direction of the center O of the first support portion 4 and the second support portion 24 , but in a shape that can further buffer the air pressure buffered by the first air pressure buffer members 7 and 27. Anything is fine. When viewed from the top surface direction of the first support part 4 and the second support part 24 , for example, it may be annular.
3 to 8, the pieces of the second pneumatic cushioning members 8 and 28 are alternately arranged between the pieces of the cross-shaped first pneumatic cushioning members 7 and 27 so as not to overlap each other. Has been.

体外循環回路側から第一流路６を経て流入する空気圧は、第一の空気圧緩衝部材７の表面に直接衝突して分散され、フィルターＦに印加される空気圧は弱められるので、フィルターＦのダメージを軽くすることができる。
また仮に血液等の液体が、体外循環回路側から第一流路６を経て流入しても、空気圧と同様に第一の空気圧緩衝部材７の表面に直接衝突して分散され、フィルターＦに印加される流体圧は弱められるので、フィルターＦの負荷を軽くしてダメージを抑えることができる。
The air pressure flowing in from the extracorporeal circuit side through the first flow path 6 directly collides with the surface of the first air pressure buffer member 7 and is dispersed, and the air pressure applied to the filter F is weakened. Can be lightened.
Even if a liquid such as blood flows through the first flow path 6 from the extracorporeal circuit side, the liquid directly collides with the surface of the first air pressure buffer member 7 and is applied to the filter F in the same manner as the air pressure. Since the fluid pressure is reduced, the load on the filter F can be reduced and damage can be suppressed.

さらに前記空気圧または血液等の流体は第一の空気圧緩衝部材７、２７の表面に直接衝突して分散された後、第二の空気圧緩衝部材８、２８に衝突してさらに分散して、弱められるので、フィルターＦの負荷をより軽くすることができる。   Further, the fluid such as air pressure or blood collides directly with the surfaces of the first air pressure buffer members 7 and 27 and is then dispersed, and further collides with the second air pressure buffer members 8 and 28 and further dispersed and weakened. Therefore, the load on the filter F can be further reduced.

本発明のトランスデューサーフィルター１は、高圧蒸気滅菌に耐えうる材質で形成することが好ましく、例えば第一ハウジング２と第二ハウジング２２にはポリプロピレン、ポリカーボネート等を採用することができ、フィルター１０はポリテトラフロロエチレン等の疎水性フィルターを採用することができる。
フィルター１０は、図１ではシート状形成されているが、少なくとも０．２μｍ以上の液体（体液、血液）、微生物、浮遊塵などは通過せず、気体は通過する構造、材質のものであれば何でも良い。
The transducer filter 1 of the present invention is preferably formed of a material that can withstand high-pressure steam sterilization. For example, the first housing 2 and the second housing 22 can be made of polypropylene, polycarbonate, or the like. A hydrophobic filter such as tetrafluoroethylene can be employed.
The filter 10 is formed in the form of a sheet in FIG. 1, but does not pass liquids (body fluids, blood), microorganisms, airborne dust, etc. of at least 0.2 μm, and gas is allowed to pass through. anything is fine.

本発明のトランスデューサーフィルター１は、例えば予め血液透析で使用する体外循環回路のドリップチャンバーの圧力モニターラインに装着することができる。
前記体外循環回路を組立てる際に前記トランスデューサーフィルター１を装着し、高圧蒸気滅菌することにより、新たに前記トランスデューサーフィルター１を装着する必要がなくなる。 The transducer filter 1 of the present invention can be attached to, for example, a pressure monitor line of a drip chamber of an extracorporeal circuit used in advance for hemodialysis.
When assembling the extracorporeal circuit, the transducer filter 1 is attached and sterilized with high-pressure steam, so that it is not necessary to newly install the transducer filter 1.

本発明のトランスデューサーフィルター１の断面図（接合前）Sectional view of transducer filter 1 of the present invention (before joining) 本発明のトランスデューサーフィルター１の断面図（接合後）Sectional view of transducer filter 1 of the present invention (after joining) （Ａ）（体外循環回路側）ハウジング２の側面図、（Ｂ）（Ａ）のＡ矢視図（天面図）、（Ｃ）（Ａ）のＢ矢視図（底面図）(A) (extracorporeal circuit side) side view of housing 2, (B) (A) arrow A view (top view), (C) (A) arrow B view (bottom view) 図３（Ｂ）のＡ−Ｏ−Ａ´断面図A-A-A 'sectional view of FIG. 図４の一部拡大断面図Partially enlarged sectional view of FIG. （Ａ）（透析装置側）ハウジング２２の側面図、（Ｂ）（Ａ）のＡ矢視図（天面図）、（Ｃ）（Ａ）のＢ矢視図（底面図）(A) (dialyzer side) housing 22 side view, (B) (A) arrow A view (top view), (C) (A) arrow B view (bottom view) 図６（Ｂ）のＡ−Ｏ−Ａ´断面図A-A-A 'sectional view of FIG. 6 (B) 図７の一部拡大図Partial enlarged view of FIG.

符号の説明Explanation of symbols

１ トランスデューサーフィルター
２ 第一ハウジング（体外循環回路側）
２２ 第二ハウジング（透析装置側）
３ 第一接続部
２３ 第二接続部
４ 第一支持部
２４ 第二支持部
５ 第一挟持部
２５ 第二挟持部
６ 第一流路
２６ 第二流路
７、２７ 第一の空気圧緩衝部材
８、２８ 第二の空気圧緩衝部材
９ 第一溶着部
２９ 第二溶着部
１０ 第一凹部
３０ 第二凹部
Ｆ （疎水性）フィルター
Ｏ 中心
1 Transducer filter 2 first housing (external circulation circuit side)
22 Second housing (dialysis machine side)
3 1st connection part 23 2nd connection part 4 1st support part 24 2nd support part 5 1st clamping part 25 2nd clamping part 6 1st flow path 26 2nd flow path 7, 27 1st pneumatic buffer member 8, 28 second air pressure buffer member 9 first welded portion 29 second welded portion 10 first recessed portion 30 second recessed portion F (hydrophobic) filter O center

Claims (3)

体外循環回路側の第一ハウジング（２）と、透析装置側の第二ハウジング（２２）とを有し、
前記第一ハウジング（２）と前記第二ハウジング（２２）は、それぞれ略円筒状の第一支持部（４）と第二支持部（２４）並びに管状の第一接続部（３）と第二接続部（２３）とを有し、
前記第一支持部（４）と第二支持部（２４）は、長手方向と、当該長手方向と略垂直に交わる側部円周方向とを有し、前記長手方向は、天面部と底面部とを有し、
前記第一接続部（３）と第二接続部（２３）は、長手方向と、当該長手方向と略垂直に交わる側部円周方向とを有し、前記長手方向は、天面部と底面部とを有し、
前記第一支持部（４）と第二支持部（２４）の底面部に、それぞれ前記第一接続部（３）と第二接続部（２３）を突設し、
前記第一ハウジング（２）の第一支持部（４）の天面部に、
前記側部円周方向の内側から外側に向けて、順次、環状の第一挟持部（５）及び第一溶着部（９）を形成し、
前記第一挟持部（５）は天面に、第一階段部（Ｋ１）を形成し、
前記天面部方向を高い位置としてみた場合、当該第一階段部（Ｋ１）は、前記側部円周方向の内側から外側に向けて、高くなるように形成し、
前記第一溶着部（９）は、前記側部円周方向の内側から外側に向けて、
順次、第一段部（Ｄ１）及び凹部（Ｍ）を形成し、
前記天面部方向を高い位置としてみた場合、
前記第一段部（Ｄ１）は、前記第一階段部（Ｋ１）の最も低い部分よりも低い位置に形成し、
前記第二ハウジング（２２）の第二支持部（２４）の天面部に、前記側部円周方向の内側から外側に向けて、順次、環状の第二挟持部（２５）及び第二溶着部（２９）を形成し、
前記第二挟持部（２５）は天面に、第二階段部（Ｋ２）を形成し、
前記天面部方向を高い位置としてみた場合、当該第二階段部（Ｋ２）は、前記側部円周方向の内側から外側に向けて、低くなるように形成し、
前記第二溶着部（２９）は、前記側部円周方向の内側から外側に向けて、順次、第二段部（Ｄ２）及び凸部（Ｔ）を形成し、前記天面部方向を高い位置としてみた場合、前記第二段部（Ｄ２）は、前記第二階段部（Ｋ２）の最も高い部分よりも高い位置に形成し、
フィルタ（Ｆ）を、前記第一支持部（４）と前記第二支持部（２４）との間に配置し、
前記フィルタ（Ｆ）の外周縁部を、前記第一溶着部（９）の前記第一段部（Ｄ１）及び前記第一挟持部（５）の第一階段部（Ｋ１）と、前記第二溶着部（２９）の第二段部（Ｄ２）及び前記第二挟持部（２５）の第二階段部（Ｋ２）との間に配置し、
超音波、ヒータ、レーザーのいずれかの手段により、
前記第一溶着部（９）の第一段部（Ｄ１）及び凹部（Ｍ）、並びに前記第二溶着部（２９）の第二段部（Ｄ２）及び凸部（Ｔ）を溶融することにより、
前記第一段部（Ｄ１）及び前記凹部（Ｍ）は前記第一溶着部（９）に吸収され、前記第二段部（Ｄ２）及び前記凸部（Ｔ）は前記第二溶着部（２９）に吸収され、前記第一溶着部（９）と前記第二溶着部（２９）とを溶着し、
前記フィルター（Ｆ）の外周縁部を、前記第一階段部（Ｋ１）と前記第二階段部（Ｋ２）との間で挟持固定したことを特徴とするトランスデューサフィルター。 A first housing (2) on the extracorporeal circuit side and a second housing (22) on the dialyzer side;
The first housing (2) and the second housing (22) have a substantially cylindrical first support part (4) and a second support part (24), and a tubular first connection part (3) and a second one, respectively. A connecting portion (23),
Said 1st support part (4) and 2nd support part (24) have a longitudinal direction and the side part circumferential direction which cross | intersects the said longitudinal direction substantially perpendicularly, The said longitudinal direction is a top | upper surface part and a bottom face part. And
Said 1st connection part (3) and 2nd connection part (23) have a longitudinal direction and the side part circumferential direction which cross | intersects the said longitudinal direction substantially perpendicularly, The said longitudinal direction is a top | upper surface part and a bottom face part. And
The first connection part (3) and the second connection part (23) are respectively projected from the bottom surfaces of the first support part (4) and the second support part (24),
On the top surface portion of the first support portion (4) of the first housing (2),
From the inner side to the outer side in the lateral direction of the side, an annular first sandwiching part (5) and a first welding part (9) are sequentially formed,
The first clamping part (5) forms a first step part (K1) on the top surface,
When the top surface portion direction is viewed as a high position, the first staircase portion (K1) is formed so as to increase from the inside to the outside in the side portion circumferential direction,
The first welded portion (9) is directed from the inner side to the outer side in the side portion circumferential direction.
Sequentially, the first step (D1) and the recess (M) are formed,
When the top surface direction is viewed as a high position,
The first step portion (D1) is formed at a position lower than the lowest portion of the first step portion (K1),
An annular second sandwiching portion (25) and a second welding portion are sequentially formed on the top surface portion of the second support portion (24) of the second housing (22) from the inner side to the outer side in the side portion circumferential direction. (29) is formed,
The second clamping part (25) forms a second step part (K2) on the top surface,
When the top surface direction is viewed as a high position, the second stepped portion (K2) is formed so as to become lower from the inner side to the outer side in the side circumferential direction,
The second welded portion (29) sequentially forms a second step portion (D2) and a convex portion (T) from the inner side to the outer side in the side portion circumferential direction, and the top surface portion direction is a high position. The second step portion (D2) is formed at a position higher than the highest portion of the second step portion (K2),
The filter (F) is disposed between the first support part (4) and the second support part (24),
The outer peripheral edge portion of the filter (F) is connected to the first step portion (D1) of the first welded portion (9) and the first step portion (K1) of the first clamping portion (5), and the second step. It arrange | positions between the 2nd step part (K2) of the 2nd step part (D2) of said welding part (29), and said 2nd clamping part (25),
By any means of ultrasonic, heater, laser,
By melting the first step portion (D1) and the concave portion (M) of the first welded portion (9), and the second step portion (D2) and the convex portion (T) of the second welded portion (29). ,
Said 1st step part (D1) and said recessed part (M) are absorbed by said 1st welding part (9), and said 2nd step part (D2) and said convex part (T) are said 2nd welding part (29). ), The first welded portion (9) and the second welded portion (29) are welded,
A transducer filter characterized in that an outer peripheral edge portion of the filter (F) is sandwiched and fixed between the first step portion (K1) and the second step portion (K2). 前記体外循環回路側の第一ハウジング（２）は、前記透析装置側の第二ハウジング（２２）として使用され、The first housing (2) on the extracorporeal circuit side is used as the second housing (22) on the dialyzer side,
前記透析装置側の第二ハウジング（２２）は、前記体外循環回路側の第一ハウジング（２）として使用されることを特徴とする、請求項１に記載のトランスデューサーフィルター（１）。The transducer filter (1) according to claim 1, characterized in that the second housing (22) on the dialyzer side is used as a first housing (2) on the extracorporeal circuit side. 請求項１または請求項２に記載のトランスデューサーフィルター（１）を装着したことを特徴とする体外循環回路。
An extracorporeal circuit having the transducer filter (1) according to claim 1 or 2 attached thereto.
JP2004344166A 2004-11-29 2004-11-29 Transducer filter and extracorporeal circuit Active JP4727974B2 (en)

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JP2011041679A (en) * 2009-08-21 2011-03-03 Kawasumi Lab Inc Transducer for blood circulation circuit outside body
JP2016096901A (en) * 2014-11-19 2016-05-30 川澄化学工業株式会社 Transducer protector, and extracorporeal circulation circuit

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FR2931081B1 (en) * 2008-05-14 2010-06-25 Direction Et Pirorites DEVICE FOR FILTRATION OF A COMPLEX LIQUID SUCH AS BLOOD, IN PARTICULAR APPLICABLE TO AN AUTOSFUSER
FR2980712B1 (en) * 2011-10-03 2013-10-04 Physidia DIALYSIS MACHINE COMPRISING MEANS FOR ULTRAFILTRATION AND RETROFILTRATION
JP6526378B2 (en) * 2013-11-07 2019-06-05 川澄化学工業株式会社 Transducer protector for extracorporeal circuit
DE102015102040A1 (en) 2015-02-12 2016-08-18 Fresenius Medical Care Deutschland Gmbh A method of checking a connection state of a blood treatment device with a blood tubing set, and devices
JP6562154B2 (en) 2016-08-10 2019-08-21 株式会社村田製作所 Filtration filter device

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JP2001129079A (en) * 1999-11-02 2001-05-15 Kawasumi Lab Inc Transducer protective filter for dialysis and its manufacturing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011041679A (en) * 2009-08-21 2011-03-03 Kawasumi Lab Inc Transducer for blood circulation circuit outside body
JP2016096901A (en) * 2014-11-19 2016-05-30 川澄化学工業株式会社 Transducer protector, and extracorporeal circulation circuit

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