JP7432530B2 - フィルタアセンブリと、それを含む体液を収集するための容器 - Google Patents
フィルタアセンブリと、それを含む体液を収集するための容器 Download PDFInfo
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- JP7432530B2 JP7432530B2 JP2020570708A JP2020570708A JP7432530B2 JP 7432530 B2 JP7432530 B2 JP 7432530B2 JP 2020570708 A JP2020570708 A JP 2020570708A JP 2020570708 A JP2020570708 A JP 2020570708A JP 7432530 B2 JP7432530 B2 JP 7432530B2
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Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Hematology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Anesthesiology (AREA)
- Textile Engineering (AREA)
- Cardiology (AREA)
- External Artificial Organs (AREA)
- Filtering Materials (AREA)
Description
上記のように、前置フィルタ支持層は、連続フィラメントのスパンボンド不織布を含むか、または本質的にそれからなる。前記布は、原料のチップまたはペレットを押し出し始める連続フィラメント不織布工程(メルトブローおよびスパンボンディング)で得られる。フィラメントの長さは理論的には無限であるため、(針状フェルト不織布で観察されるように)繊維が浸出する危険を下げることは、針状フェルト材料よりも本質的に低くなる。1つの実施形態では、前置フィルタ支持布の個々の繊維は、円形、楕円形の長方形、四角形または三角形の断面など、任意の所望の断面を有し得る。異なる断面を有する繊維の混合も可能である。
1つの実施形態では、第1のメッシュフィルタ層は、ポリエステル、ポリエチレン、ポリプロピレン、ポリブチレン、ポリメチルペンテン、ポリエチレンテレフタレート、ポリトリメチレンテレフタレート、ポリブチレンテレフタレート、ポリ(ブチレンテレフタレート-コ-ポリアルキレングリコールテレフタレート)、ナイロン6,6、ナイロン6,9、ナイロン6/12、ナイロン11、ナイロン12、酢酸セルロース、酢酸プロピオン酸セルロース、または、それらの組み合わせなどの高分子を含むか、または、そのような高分子から完全に作製することができる。それにより、非疎水性または親水性材料は、メッシュフィルタ層を製造するのに特に適切である。メッシュフィルタ層を製造するために使用される材料の親水性を高めること、またはすでに製造されたフィルタの親水性を高めることも可能である。そのため、化学物質の堆積よりも物理的処理の方が適切である。これは、容器の使用中に化学物質がメッシュフィルタから浸出する可能性があるためである。メッシュフィルタ層の適切な表面積は、300から1000cm2、特に400から900cm2、特に500から800cm2、特に600から700cm2の範囲である。
Claims (24)
- 前置フィルタ支持層(84)と、前記前置フィルタ支持層(84)の下流に配置された第1のメッシュフィルタ層(85)を含むフィルタアセンブリであって、前記前置フィルタ支持層(84)は繊維の不織布を含み、前記不織布はある細孔サイズを有し、前記第1のメッシュフィルタ層(85)は第1のメッシュサイズを有し、前記前置フィルタ層(84)の前記細孔サイズは前記第1のメッシュフィルタ層(85)の前記第1のメッシュサイズ以上であり、
前記フィルタアセンブリ(6)は、前記第1のメッシュフィルタ層(85)の下流に配置されたフィルタ保持部(7)を備え、前記フィルタ保持部(7)は、前記前置フィルタ支持層(84)と前記第1のメッシュフィルタ層(85)の両方に接触して安定化するように構成されており、
前記第1のメッシュフィルタ層(85)は、前記前置フィルタ支持層(84)の前記フィルタ保持部(7)に面する側に配置されている、フィルタアセンブリ。 - 前記フィルタ保持部はプラスチック製であり、前記前置フィルタ支持層(84)の一部および前記第1のメッシュフィルタ層(85)の一部の上にオーバーモールドされている、請求項1に記載のフィルタアセンブリ。
- 前記前置フィルタ支持層(84)の上流に配置された第2のメッシュフィルタ層(86)を備え、前記第2のメッシュフィルタ層(86)は第2のメッシュサイズを有し、前記第2のメッシュフィルタ層(86)の前記第2のメッシュサイズは、前記前置フィルタ支持層(84)の細孔サイズ以上である、請求項1または請求項2に記載のフィルタアセンブリ。
- 前記前置フィルタ支持層(84)はスパンボンド不織布を含む、請求項1から請求項3までのいずれか1項に記載のフィルタアセンブリ。
- 前記前置フィルタ支持層(84)の繊維の少なくとも一部がそれぞれ、それぞれの繊維の長手方向に延びる少なくとも1つの溝を含む、請求項1から請求項4までのいずれか1項に記載のフィルタアセンブリ。
- 前記繊維の少なくとも一部が葉状断面、特に、三葉断面を有する、請求項1から請求項5までのいずれか1項に記載のフィルタアセンブリ。
- 前記前置フィルタ支持層(84)と前記第1のメッシュフィルタ層(85)と前記第2のメッシュフィルタ層(86)は、少なくとも2つ、または、少なくとも3つの異なる細孔サイズまたは異なるメッシュサイズのろ過能力の異なる区域を有する、請求項1から請求項6までのいずれか1項に記載のフィルタアセンブリ。
- 前記前置フィルタ支持層(84)、前記第1のメッシュフィルタ層(85)、および、任意で前記第2のメッシュフィルタ層(86)が、垂直方向の伸長方向にわたって、および、水平方向の伸長方向にわたって延び、
前記垂直方向の伸長方向は前記フィルタアセンブリの通常の操作の間、垂直に配列され、前記水平方向の伸長方向は前記フィルタアセンブリの通常の操作の間、水平に配列され、
前記前置フィルタ(84)の前記不織布、前記第1のメッシュフィルタ層、および、前記第2のメッシュフィルタ層の少なくとも1つは、前記垂直方向の伸長方向において第1の高さに第1の区域(87)と、前記垂直方向の伸長方向において第2の高さに第2の区域(88)とを有し、前記第1の区域(87)と前記第2の区域(88)は異なるメッシュサイズを有し、異なるろ過能力を有する、請求項1から請求項7までのいずれか1項に記載のフィルタアセンブリ。 - 前記第1の区域(87)および/または前記第2の区域(88)は、水平方向の伸長方向全体に沿って延びる、請求項8に記載のフィルタアセンブリ。
- 消泡剤を含まない、請求項1から請求項9までのいずれか1項に記載のフィルタアセンブリ。
- 体液をインビトロでろ過するための請求項1から請求項10までのいずれか1項に記載のフィルタアセンブリの使用。
- 前記体液は血液である、請求項11に記載の使用。
- 請求項1から請求項10までのいずれか1項に記載のフィルタアセンブリの製造方法であって、前記フィルタアセンブリ(6)は、フィルタ保持部(7)、第1のメッシュフィルタ層(85)、および、前置フィルタ支持層(84)を備え、
前記前置フィルタ支持層(84)は、繊維の不織布を含み、前記不織布は第1のメッシュサイズを有し、前記フィルタ保持部(7)は前記第1のメッシュフィルタ層(85)の下流に配置され、前記第1のメッシュフィルタ層(85)は、前記前置フィルタ支持層(84)の下流に配置され、前記第1のメッシュフィルタ層(85)は第2のメッシュサイズを有し、前記第1のメッシュサイズは前記第2のメッシュサイズ以上であり、
前記フィルタ保持部(7)は、前記前置フィルタ層(84)と前記第1のメッシュフィルタ層(85)の両方に接触してそれらを安定化させるように、前記前置フィルタ支持層(84)の一部と前記第1のメッシュフィルタ層(85)の一部の上にオーバーモールドされている、方法。 - 前記第1のメッシュフィルタ層(85)と前記前置フィルタ支持層(84)は、後にフィルタアセンブリ(6)の所望の形状にされる平らなリボン(80)の形態で製造され、前記所望の形状は、前記前置フィルタ支持層(84)と前記第1のメッシュフィルタ層(85)を前記フィルタ保持部(7)で部分的にオーバーモールドすることによって固定される、請求項13に記載の方法。
- 体液を収集するための容器であって、体液が容器ハウジング(2)の入口セクション(5)に入ることができる体液入口(4)を備えた容器ハウジング(2)、体液収集セクション(9)、前記入口セクション(5)および前記体液収集セクション(9)に低圧を加えるために前記容器ハウジング(2)に真空源を接続するための真空連結部(10)、および、前記入口セクション(5)と前記体液収集セクション(9)との間に配置されるフィルタモジュール(6)とを備え、
前記フィルタモジュール(6)は生側と清浄側を有し、前記生側は前記入口セクション(5)に面し、前記清浄側は前記体液収集セクション(9)に面し、
前記フィルタモジュール(6)は、請求項1から請求項10までのいずれか1項に記載のフィルタアセンブリである、容器。 - 前記容器ハウジング(2)は、容器の目的とされた使用中に前記体液収集セクション(9)から真空源によって引き出される空気の流れ方向において、前記体液収集セクション(9)と真空連結部(10)との間に配置された疎水性フィルタ(11)をさらに備える、請求項15に記載の容器。
- 前記フィルタ保持部(7)および前記容器ハウジング(2)の上部カバー(3)が一体的に形成されている、請求項15または請求項16に記載の容器。
- 前記フィルタ保持部(7)は前記メッシュフィルタ(8)を安定化させるためのバーを備え、前記メッシュフィルタ(8)は前記フィルタ保持部(7)の内部空間において前記バーによって取り囲まれている、請求項15から請求項17までのいずれか1項に記載の容器。
- 前記フィルタアセンブリ(6)の入口区域(15)は漏斗状である、請求項15から請求項18までのいずれか1項に記載の容器。
- 前記フィルタアセンブリ(6)の底部(13)は、前記フィルタアセンブリ(6)の内部空間に向かうくぼみを含む、請求項15から請求項19までのいずれか1項に記載の容器。
- 前記疎水性フィルタ(11)は、前記容器ハウジング(2)の上部カバー(3)に一体化されている、請求項16に記載の容器。
- 前記疎水性フィルタ(11)は、プリーツフィルタ材料を含む、請求項16に記載の容器。
- 前記プリーツフィルタ材料は、前記疎水性フィルタ(11)を収容するフィルタ要素の表面積の少なくとも3倍高いフィルタ表面積を有する、請求項22に記載の容器。
- 前記容器(1)の容器ハウジング(2)の上部カバー(3)と前記容器(1)フィルタ保持部(7)とが一体として製造されるように共成形されている、請求項15から請求項23までのいずれか1項に記載の容器。
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