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JP4496232B2 - Transducer filter - Google Patents

Transducer filter Download PDF

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JP4496232B2
JP4496232B2 JP2007069728A JP2007069728A JP4496232B2 JP 4496232 B2 JP4496232 B2 JP 4496232B2 JP 2007069728 A JP2007069728 A JP 2007069728A JP 2007069728 A JP2007069728 A JP 2007069728A JP 4496232 B2 JP4496232 B2 JP 4496232B2
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housing
protrusion
top surface
welded
filter
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JP2007190406A (en
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光寿 佐藤
征秀 藤井
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SB Kawasumi Laboratories Inc
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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では、透析装置側のハウジング鍔部（支持部）内に複数の保護板を配置して、フィルターの膨らみを抑える発明が記載されている。しかしながらこれらの構造では、体外循環回路側から空気圧または血液等の流体圧力が印加された場合、直接フィルターに負荷がかかりすぎるため破損等が懸念される。   For example, in the transducer filter described in Patent Document 1, an invention is described in which a plurality of protective plates are arranged in a housing collar (support) on the dialyzer side to suppress swelling of the filter. However, in these structures, when a fluid pressure such as air pressure or blood is applied from the extracorporeal circuit side, the filter is excessively loaded, and there is a concern about damage or the like.

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フィルターが記載されているが、これらは液体ろ過フィルターであり、体外循環回路側から流入する空気圧が直接フィルターに印加される場合のフィルター保護については、記載されていない。また当該フィルターは、二つのハウジングの間にフィルターをサンドイッチ状に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という課題があった。   Patent Documents 2 and 3 also describe a filter having a shape similar to that of a transducer filter, but these are liquid filtration filters, in which air pressure flowing from the extracorporeal circuit is directly applied to the filter. There is no mention of protection. Further, since the filter has a structure in which the filter is sandwiched between two housings, a load is applied to the filter, and there is a problem that quality stability is lacking when the structure is used in a transducer filter.

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)

本発明が解決しようとする問題点は、特許文献２と特許文献３の発明は、二つのハウジングの間にフィルターをサンドイッチ状に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という点である。   The problem to be solved by the present invention is that the inventions of Patent Document 2 and Patent Document 3 have a structure in which a filter is sandwiched between two housings, so that a load is applied to the filter. When used in a 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、体外循環回路側のハウジング（２）と、透析装置側のハウジング（１２）とを有し、
前記体外循環回路側のハウジング（２）と前記透析装置側のハウジング（１２）は、それぞれ略円筒状の支持部材（２ｂ、１２ｂ）と接続部（２ａ、１２ａ）とを有し、
前記支持部材（２ｂ、１２ｂ）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、
前記接続部（２ａ、１２ａ）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、
前記支持部材（２ｂ、１２ｂ）の底面部に、前記接続部（２ａ、１２ａ）を突設し、
前記体外循環回路側のハウジング（２）の支持部（２ｂ）の天面部に、環状の突部（３）を形成し、当該突部（３）の外周に、溶着部（７）を形成し、当該溶着部（７）の天面に突起（６）を形成し、
前記透析装置側のハウジング（１２）の支持部（１２ｂ）の天面部外縁に、環状の溶着部（１７）を形成し、当該溶着部（１７）の内縁に、環状の突部（１３）を形成し、当該突部（１３）の天面に環状の小突部（８）を形成し、
当該小突部（８）の内側に疎水性フィルター（１０）を配置し、
当該疎水性フィルター（１０）は、前記小突部（８）の内側壁面及び前記突部（１３）の天面部に接する部分に溶着し、
前記透析装置側のハウジング（１２）の支持部（１２ｂ）の溶着部（１７）の天面部と、前記体外循環回路側のハウジング（２）の支持部（２ｂ）の溶着部（７）を嵌合し、
前記体外循環回路側の支持部（２ｂ）の溶着部（７）の突起（６）を、超音波により溶融させて、
前記透析装置側のハウジング（１２）の溶着部（１７）に溶着した、トランスデューサーフィルター（１）を提供する。
［２］本発明は、前記体外循環回路側のハウジング（２）は、透析装置側のハウジングとして使用され、
前記透析装置側のハウジング（１２）は、体外循環回路側のハウジングとして使用される、［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。
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 housing (2) on the extracorporeal circuit side and a housing (12) on the dialyzer side,
The extracorporeal circuit side housing (2) and the dialyzer side housing (12) each have a substantially cylindrical support member (2b, 12b) and a connecting portion (2a, 12a),
The support member (2b, 12b) has a longitudinal direction and a side circumferential direction that intersects the longitudinal direction substantially perpendicularly, and the longitudinal direction has a top surface portion and a bottom surface portion,
The connection portion (2a, 12a) has a longitudinal direction and a side circumferential direction that intersects the longitudinal direction substantially perpendicularly, and the longitudinal direction has a top surface portion and a bottom surface portion,
The connecting portions (2a, 12a) project from the bottom surface of the support member (2b, 12b),
An annular protrusion (3) is formed on the top surface of the support part (2b) of the housing (2) on the extracorporeal circuit side, and a welded part (7) is formed on the outer periphery of the protrusion (3). , Forming a protrusion (6) on the top surface of the welded portion (7),
An annular weld portion (17) is formed on the outer edge of the top surface portion of the support portion (12b) of the housing (12) on the dialyzer side, and an annular protrusion (13) is formed on the inner edge of the weld portion (17). Forming an annular small protrusion (8) on the top surface of the protrusion (13),
Place the hydrophobic filter (10) inside the small protrusion (8),
The hydrophobic filter (10) is welded to the inner wall surface of the small protrusion (8) and the portion in contact with the top surface of the protrusion (13),
The top surface portion of the welded portion (17) of the support portion (12b) of the housing (12) on the dialyzer side and the welded portion (7) of the support portion (2b) of the housing (2) on the extracorporeal circuit side are fitted. Together
The protrusion (6) of the welded part (7) of the support part (2b) on the extracorporeal circuit side is melted by ultrasonic waves,
Provided is a transducer filter (1) welded to a welded portion (17) of a housing (12) on the dialyzer side .
[2] In the present invention, the extracorporeal circuit side housing (2) is used as a dialyzer side housing,
The dialysis device side housing (12) provides the transducer filter (1) according to [1], which is used as a housing on the extracorporeal circuit side .

本発明のトランスデューサーフィルター１は、
（１）疎水性フィルター１０を一方の（透析装置側）ハウジング１２に溶着固定するものであるから、疎水性フィルター１０にかかる負荷を軽減することができ、疎水性フィルター１０の品質（性能）を安定化することができる。
（２）（１）により、疎水性フィルター１０は、ハウジング２、１２間に安定した形状で固定されるので、耐久性に優れる。 The transducer filter 1 of the present invention is
(1) Since the hydrophobic filter 10 is welded and fixed to one (dialyzer side) housing 12, the load on the hydrophobic filter 10 can be reduced, and the quality (performance) of the hydrophobic filter 10 can be reduced. Can be stabilized.
(2) According to (1), the hydrophobic filter 10 is fixed in a stable shape between the housings 2 and 12, and thus has excellent durability.

図１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２（ａ）はハウジング２の天面図、（ｂ）は側面図、（ｃ）は背面図、図３は図２（ａ）の一部拡大図で、図４は前記図３のＡ―Ｏ−Ａの一部断面拡大図、図５（ａ）はハウジング１２の天面図で、（ｂ）は側面図、（ｃ）は背面図、図６は図５（ａ）一部拡大図で、図７は前記図６のＡ−Ｏ−Ａの一部断面拡大図である。
本発明のトランスデューサーフィルター１は、体外循環回路側と透析装置側の二つのハウジング２、１２より構成され、ハウジング２、１２は、略円筒状の支持部２ｂ、１２ｂと接続部２ａ、１２ａより一体に形成される。
支持部材（２ｂ、１２ｂ）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、長手方向は、天面部と底面部とを有する。
接続部（２ａ、１２ａ）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。
支持部材（２ｂ、１２ｂ）の底面部に、接続部（２ａ、１２ａ）を突設している。接続部（２ａ、１２ａ）の天面部に接続部（２ａ、１２ａ）を形成している。
図１に例示するように体外循環回路側と透析装置側のハウジング２、１２の二つの支持部２ｂ、１２間に疎水性フィルター１０を配置し、図２から図３、図５から図６に例示するように、当該支持部２ｂ、１２ｂに、第一の空気圧緩衝部材５、１５を形成し、当該第一の空気圧緩衝部材５、１５の外周に、第二の空気圧緩衝部材５ａ、１５ａを形成している。
本発明では、第一の空気圧緩衝部材５と第二の空気圧緩衝部材５ａは、少なくとも体外循環回路側ハウジング２の支持部２ｂに形成すれば良い。
本発明の説明では、便宜上、ハウジング２を体外循環回路側、ハウジング１２を透析装置側とするが、ハウジング２を透析装置側、ハウジング１２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。
1 is a sectional view showing an example of a transducer filter 1 of the present invention, FIG. 2 (a) is a top view of a housing 2, (b) is a side view, (c) is a rear view, and FIG. FIG. 4 is a partially enlarged view of a), FIG. 4 is a partially enlarged sectional view of AOA in FIG. 3, FIG. 5 (a) is a top view of the housing 12, and (b) is a side view. c) is a rear view, FIG. 6 is a partially enlarged view of FIG. 5A, and FIG. 7 is a partially enlarged sectional view of A-O-A of FIG.
The transducer filter 1 of the present invention is composed of two housings 2 and 12 on the extracorporeal circuit side and the dialyzer side, and the housings 2 and 12 include substantially cylindrical support portions 2b and 12b and connection portions 2a and 12a. It is integrally formed.
The support members (2b, 12b) have a longitudinal direction and a side circumferential direction that intersects the longitudinal direction substantially perpendicularly, and the longitudinal direction has a top surface portion and a bottom surface portion.
The connecting portions (2a, 12a) have a longitudinal direction and a side circumferential direction that intersects the longitudinal direction substantially perpendicularly, and the longitudinal direction has a top surface portion and a bottom surface portion.
Connection portions (2a, 12a) project from the bottom surface of the support members (2b, 12b). Connection portions (2a, 12a) are formed on the top surface of the connection portions (2a, 12a).
As illustrated in FIG. 1, a hydrophobic filter 10 is disposed between the two support portions 2 b and 12 of the housing 2 and 12 on the extracorporeal circuit side and the dialyzer side, and FIGS. 2 to 3 and FIGS. As illustrated, the first air pressure buffer members 5 and 15 are formed on the support portions 2b and 12b, and the second air pressure buffer members 5a and 15a are formed on the outer periphery of the first air pressure buffer members 5 and 15. Forming.
In the present invention, the first air pressure buffering member 5 and the second air pressure buffering member 5a may be formed at least on the support portion 2b of the extracorporeal circuit side housing 2.
In the description of the present invention, for convenience, the housing 2 is on the extracorporeal circuit side and the housing 12 is on the dialyzer side, but the housing 2 can also be used as the dialyzer side, and the housing 12 can be used as the extracorporeal circuit side housing.

ハウジング２、１２は、先細りのテーパーに形成した接続部２ａ、１２ａを、前記支持部２ｂ、１２ｂの底部中央に一体に突設している。接続部２ａ、１２ａから支持部２ｂ、１２ｂ内部に亘って流体（空気、血液等）の流路４、１４が形成されている。
図４、７に例示するように、支持部２ｂ、１２ｂの天面に凹部９が形成され、当該凹部９、１９空間に、第一の空気圧緩衝部材５、１５と第二の空気圧緩衝部材５ａ、１５ａが配置されている。
図２、３、５、６に例示するように、第一の空気圧緩衝部材５、１５は、支持部２ｂ、１２ｂのほぼ中央部に配置され、さらに第二の空気圧緩衝部材５ａ、１５ａは、第一の空気圧緩衝部材５、１５を取り囲むように、その外周（外側とも云う）に配置されている。 In the housings 2 and 12, connecting portions 2a and 12a formed in a tapered taper are integrally projected at the bottom center of the supporting portions 2b and 12b. Flow paths 4 and 14 for fluid (air, blood, etc.) are formed from the connection portions 2a and 12a to the inside of the support portions 2b and 12b.
As illustrated in FIGS. 4 and 7, a concave portion 9 is formed on the top surface of the support portions 2b and 12b, and the first pneumatic cushioning members 5 and 15 and the second pneumatic cushioning member 5a are formed in the concave portions 9 and 19 space. , 15a are arranged.
As illustrated in FIGS. 2, 3, 5, and 6, the first pneumatic shock absorbing members 5 and 15 are disposed at substantially the center of the support portions 2 b and 12 b, and the second pneumatic shock absorbing members 5 a and 15 a are It arrange | positions on the outer periphery (it is also called an outer side) so that the 1st pneumatic shock-absorbing members 5 and 15 may be surrounded.

第一の空気圧緩衝部材５、１５は、図３、４、６、７の例示では、縦断面が板状（矩形状）に形成され、支持部２ｂ、１２ｂ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、空気圧が直接疎水性フィルター１０に衝突するの防ぎ、緩衝できる形状であれば何でも良い。支持部２ｂ、１２ｂ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５ａ、１５ａは、図３、４、６、７の例示では、縦断面が板状（矩形状）に形成され、支持部２ｂ、１２ｂの天面方向から見て、４片が支持部２ｂ、１２ｂ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５、１５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。支持部２ｂ、１２ｂの天面方向から見て、例えば、環状であっても良い。
なお図２から図７の例示では、十字状の第一の空気圧緩衝部材５、１５の各片の間に、第二の空気圧緩衝部材５ａ、１５ａ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, 4, 6, and 7, the first pneumatic cushioning members 5 and 15 are formed in a plate shape (rectangular shape) in a longitudinal section, and are substantially viewed from the top surface direction of the support portions 2 b and 12 b. The four pieces are combined to form a cross shape, but any shape can be used as long as the air pressure can be prevented from directly colliding with the hydrophobic filter 10 and buffered. When viewed from the top surface direction of the support portions 2b and 12b, for example, a circular shape, an annular shape, or a lattice shape may be used.
Further, in the illustration of FIGS. 3, 4, 6, and 7, the second pneumatic shock-absorbing members 5 a and 15 a are formed in a plate shape (rectangular shape) in the longitudinal section, and viewed from the top surface direction of the support portions 2 b and 12 b, The four pieces are arranged radially in the direction of the center O of the support portions 2b and 12b, but any shape can be used as long as the air pressure buffered by the first air pressure buffer members 5 and 15 can be further buffered. For example, it may be annular when viewed from the top surface direction of the support portions 2b and 12b.
In the illustrations of FIGS. 2 to 7, the pieces of the second air pressure buffer members 5a and 15a are alternately arranged between the pieces of the cross-shaped first air pressure buffer members 5 and 15 so as not to overlap each other. Has been.

体外循環回路側から流路４を経て流入する空気圧は、第一の空気圧緩衝部材５の表面に直接衝突して分散され、疎水性フィルター１０に印加される空気圧は弱められるので、疎水性フィルター１０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流路４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５の表面に直接衝突して分散され、疎水性フィルター１０に印加される流体圧は弱められるので、疎水性フィルター１０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 from the extracorporeal circuit side through the flow path 4 directly collides with the surface of the first air pressure buffer member 5 and is dispersed, and the air pressure applied to the hydrophobic filter 10 is weakened. Can reduce the damage.
Even if a liquid such as blood flows from the extracorporeal circuit through the flow path 4, it is directly collided with the surface of the first air pressure buffer member 5 and dispersed, and is applied to the hydrophobic filter 10. Since the applied fluid pressure is weakened, the load on the hydrophobic filter 10 can be lightened to suppress damage.

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５、１５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５ａ、１５ａに衝突してさらに分散して、弱められるので、疎水性フィルター１０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 5 and 15 and then disperses and collides with the second air pressure buffer members 5a and 15a to further weaken it. Therefore, the load on the hydrophobic filter 10 can be further reduced.

なお図４に示すようにハウジング２の支持部２ｂの天面部（第二の空気圧緩衝部材５ａ、１５ａの外縁）には、環状の突部３が形成されている。また突部３外周に、溶着部７が形成され、当該溶着部７の表面（天面）には突起６が形成されている。
他方図７に例示するようにハウジング１２の支持部１２ｂ天面部外縁には、環状の溶着部１７が形成され、当該溶着部１７の内縁（第二の空気圧緩衝部材１５ａの外側）には、環状の突部１３が形成されている。
さらに当該突部１３の天面に環状の小突部８が形成されている。当該小突部８の内側に疎水性フィルター１０が配置されている。さらに詳述すれば、疎水性フィルター１０は小突部８の内側壁面及び突部１３の天面部に接する部分に、例えば超音波、接触ヒータ、レーザー等により溶着される。
以上のハウジング１２をハウジング２側の支持部２ｂの突部３と嵌合させ、当該支持部２ｂ底部側から超音波発振し、溶着する。
溶着部７に形成した三角形の突起６は、支持部２ｂと支持部１２ｂを嵌合して超音波溶着する際に、溶融して溶着部１７に溶着（吸収）される。
疎水性フィルター１０を、二つのハウジング２、１２の間に、サンドイッチ状に挟持固定するものではなく、一方の（透析装置側）ハウジング１２に溶着固定するものであるから、疎水性フィルター１０にかかる負荷を軽減することができ、疎水性フィルター１０の品質（性能）を安定化することができる。 In addition, as shown in FIG. 4, the cyclic | annular protrusion 3 is formed in the top | upper surface part (outer edge of 2nd pneumatic shock absorbing member 5a, 15a) of the support part 2b of the housing 2. As shown in FIG. A weld 7 is formed on the outer periphery of the protrusion 3, and a protrusion 6 is formed on the surface (top surface) of the weld 7.
The support portion 12b top surface edge of the housing 12 as illustrated in the other 7, an annular weld portion 17 is formed, on the inner edge of the welded portion 17 (outside of the second pneumatic cushioning member 15a) is An annular protrusion 13 is formed.
Further, an annular small protrusion 8 is formed on the top surface of the protrusion 13. A hydrophobic filter 10 is disposed inside the small protrusion 8. In more detail, the hydrophobic filter 10 to a portion in contact with the top surface portion of the inner wall surface and projections 13 of small projection 8, for example, ultrasonic, contact heater, is welded by a laser or the like.
The above housing 12 is fitted to the protrusion 3 of the support portion 2b on the housing 2 side, and ultrasonically oscillates and welds from the bottom side of the support portion 2b.
The triangular protrusion 6 formed on the welded portion 7 is melted and welded (absorbed) to the welded portion 17 when the support portion 2b and the support portion 12b are fitted and ultrasonically welded.
Since the hydrophobic filter 10 is not sandwiched and fixed between the two housings 2 and 12 but is welded and fixed to one of the housings 12 (dialyzer side), the hydrophobic filter 10 is applied. The load can be reduced, and the quality (performance) of the hydrophobic filter 10 can be stabilized.

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、例えばハウジング２、１２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、疎水性フィルター１０はポリテトラフロロエチレン等を採用することができる。
疎水性フィルター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 housings 2 and 12 can be made of polypropylene, polycarbonate, or the like, and the hydrophobic filter 10 can be made of polytetrafluoroethylene. Etc. can be adopted.
The hydrophobic filter 10 is formed in the form of a sheet in FIG. 1, but has a structure and material that does not pass liquids (body fluids, blood), microorganisms, suspended dust, etc. of at least 0.2 μm and does not pass gas. Anything is fine.

本発明のトランスデューサーフィルター１は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 in advance to the monitor line of the drip chamber of the extracorporeal circuit used in 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Sectional view of the transducer filter 1 of the present invention （ａ）トランスデューサーフィルター１を構成するハウジング２の天面図、（ｂ）ハウジング２の側面図、（ｃ）ハウジング２の背面図(A) Top view of housing 2 constituting transducer filter 1, (b) Side view of housing 2, (c) Rear view of housing 2 図２の（ａ）の一部拡大図A partially enlarged view of FIG. 図３のＡ−Ｏ−Ａの一部断面拡大図Partial cross-sectional enlarged view of A-O-A in FIG. （ａ）トランスデューサーフィルター１を構成するハウジング１２の天面図、（ｂ）の側面図、（ｃ）ハウジング１２の背面図(A) Top view of housing 12 constituting transducer filter 1, (b) side view, (c) rear view of housing 12 図５の（ａ）の一部拡大図A partially enlarged view of FIG. 図６のＡ−Ｏ−Ａの一部断面拡大図Partial cross-sectional enlarged view of A-O-A in 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 ハウジング（体外循環回路側）
１２ ハウジング（透析装置側）
２ａ、１２ａ 接続部
２ｂ、１２ｂ 支持部
３、１３ 突部
４、１４ 流路
５、１５ 第一の空気圧緩衝部材
５ａ、１５ａ 第二の空気圧緩衝部材
６ 突起
７、１７ 溶着部
８ 小突起
９、１９ 凹部
１０ 疎水性フィルター
Ｏ 中心 1 Transducer filter 2 Housing (external circulation circuit side)
12 Housing (dialysis machine side)
2a, 12a Connecting portion 2b, 12b Support portion 3, 13 Protruding portion 4, 14 Flow path 5, 15 First pneumatic shock absorbing member 5a, 15a Second pneumatic shock absorbing member 6 Protrusion 7, 17 Welding portion 8 Small protrusion 9, 19 Recess 10 Hydrophobic filter O Center

Claims (2)

体外循環回路側のハウジング（２）と、透析装置側のハウジング（１２）とを有し、A housing (2) on the extracorporeal circuit side, and a housing (12) on the dialyzer side,
前記体外循環回路側のハウジング（２）と前記透析装置側のハウジング（１２）は、それぞれ略円筒状の支持部材（２ｂ、１２ｂ）と接続部（２ａ、１２ａ）とを有し、The extracorporeal circuit side housing (2) and the dialyzer side housing (12) each have a substantially cylindrical support member (2b, 12b) and a connecting portion (2a, 12a),
前記支持部材（２ｂ、１２ｂ）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、The support member (2b, 12b) has a longitudinal direction and a side circumferential direction that intersects the longitudinal direction substantially perpendicularly, and the longitudinal direction has a top surface portion and a bottom surface portion,
前記接続部（２ａ、１２ａ）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、The connection portion (2a, 12a) has a longitudinal direction and a side circumferential direction that intersects the longitudinal direction substantially perpendicularly, and the longitudinal direction has a top surface portion and a bottom surface portion,
前記支持部材（２ｂ、１２ｂ）の底面部に、前記接続部（２ａ、１２ａ）を突設し、The connecting portions (2a, 12a) project from the bottom surface of the support member (2b, 12b),
前記体外循環回路側のハウジング（２）の支持部（２ｂ）の天面部に、環状の突部（３）を形成し、当該突部（３）の外周に、溶着部（７）を形成し、当該溶着部（７）の天面に突起（６）を形成し、An annular protrusion (3) is formed on the top surface of the support part (2b) of the housing (2) on the extracorporeal circuit side, and a welded part (7) is formed on the outer periphery of the protrusion (3). , Forming a protrusion (6) on the top surface of the welded portion (7),
前記透析装置側のハウジング（１２）の支持部（１２ｂ）の天面部外縁に、環状の溶着部（１７）を形成し、当該溶着部（１７）の内縁に、環状の突部（１３）を形成し、当該突部（１３）の天面に環状の小突部（８）を形成し、An annular welded portion (17) is formed on the outer edge of the top surface of the support portion (12b) of the housing (12) on the dialyzer side, and an annular protrusion (13) is formed on the inner edge of the welded portion (17). Forming an annular small protrusion (8) on the top surface of the protrusion (13),
当該小突部（８）の内側に疎水性フィルター（１０）を配置し、Place the hydrophobic filter (10) inside the small protrusion (8),
当該疎水性フィルター（１０）は、前記小突部（８）の内側壁面及び前記突部（１３）の天面部に接する部分に溶着し、The hydrophobic filter (10) is welded to the inner wall surface of the small protrusion (8) and the portion in contact with the top surface of the protrusion (13),
前記透析装置側のハウジング（１２）の支持部（１２ｂ）の溶着部（１７）の天面部と、前記体外循環回路側のハウジング（２）の支持部（２ｂ）の溶着部（７）を嵌合し、The top surface portion of the welded portion (17) of the support portion (12b) of the housing (12) on the dialyzer side and the welded portion (7) of the support portion (2b) of the housing (2) on the extracorporeal circuit side are fitted. Together
前記体外循環回路側の支持部（２ｂ）の溶着部（７）の突起（６）を、超音波により溶融させて、The protrusion (6) of the welded part (7) of the support part (2b) on the extracorporeal circuit side is melted by ultrasonic waves,
前記透析装置側のハウジング（１２）の溶着部（１７）に溶着したことを特徴とするトランスデューサーフィルター（１）。A transducer filter (1), which is welded to a welded portion (17) of a housing (12) on the dialyzer side. 前記体外循環回路側のハウジング（２）は、透析装置側のハウジングとして使用され、The extracorporeal circuit side housing (2) is used as a dialyzer side housing,
前記透析装置側のハウジング（１２）は、体外循環回路側のハウジング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, wherein the housing (12) on the dialyzer side is used as a housing on the extracorporeal circuit side.
JP2007069728A 2007-03-19 2007-03-19 Transducer filter Expired - Fee Related JP4496232B2 (en)

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Citations (5)

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Publication number Priority date Publication date Assignee Title
JPH01176443U (en) * 1988-05-31 1989-12-15
JPH067648A (en) * 1992-02-28 1994-01-18 Millipore Corp Filter device with stress relieving groove
JPH09509361A (en) * 1994-02-22 1997-09-22 ミリポア コーポレイション Membrane support and sealing device
JP2001129079A (en) * 1999-11-02 2001-05-15 Kawasumi Lab Inc Transducer protective filter for dialysis and its manufacturing method
JP2002500942A (en) * 1997-07-31 2002-01-15 ザトーリウス アクチエン ゲゼルシャフト Filtration unit made of synthetic resin and method for producing the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1311583B1 (en) * 1999-11-08 2002-03-13 Gvs S R L PROTECTIVE DEVICE FOR TRANSDUCERS, PARTICULARLY HEMODIALYSIS PROCESSES.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01176443U (en) * 1988-05-31 1989-12-15
JPH067648A (en) * 1992-02-28 1994-01-18 Millipore Corp Filter device with stress relieving groove
JPH09509361A (en) * 1994-02-22 1997-09-22 ミリポア コーポレイション Membrane support and sealing device
JP2002500942A (en) * 1997-07-31 2002-01-15 ザトーリウス アクチエン ゲゼルシャフト Filtration unit made of synthetic resin and method for producing the same
JP2001129079A (en) * 1999-11-02 2001-05-15 Kawasumi Lab Inc Transducer protective filter for dialysis and its manufacturing method

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