JP2001129079A - Transducer protective filter for dialysis and its manufacturing method - Google Patents
Transducer protective filter for dialysis and its manufacturing methodInfo
- Publication number
- JP2001129079A JP2001129079A JP31228499A JP31228499A JP2001129079A JP 2001129079 A JP2001129079 A JP 2001129079A JP 31228499 A JP31228499 A JP 31228499A JP 31228499 A JP31228499 A JP 31228499A JP 2001129079 A JP2001129079 A JP 2001129079A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- housing
- flange
- dialysis
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000502 dialysis Methods 0.000 title claims abstract description 26
- 230000001681 protective effect Effects 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000011347 resin Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 239000008280 blood Substances 0.000 abstract description 3
- 210000004369 blood Anatomy 0.000 abstract description 3
- 208000015181 infectious disease Diseases 0.000 abstract description 2
- 238000011109 contamination Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 230000008961 swelling Effects 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- PYVHTIWHNXTVPF-UHFFFAOYSA-N F.F.F.F.C=C Chemical compound F.F.F.F.C=C PYVHTIWHNXTVPF-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/3639—Blood pressure control, pressure transducers specially adapted therefor
- A61M1/3641—Pressure isolators
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Cardiology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- External Artificial Organs (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は透析用トランスデュ
ーサー保護フィルター及びその製造方法の改良に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a protective filter for a transducer for dialysis and a method for producing the same.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】人工透
析に用いられる体外循環回路には動脈側と静脈側にそれ
ぞれドリップチャンバーが配置され、このドリップチャ
ンバー内の圧力を測定する為の圧力モニターラインが装
着され透析装置と連通している。前記圧力モニターライ
ンと透析装置の間に透析用トランスデューサー保護フィ
ルター（以下「保護フィルター」と略記する）を装着し
て透析装置内に血液が流れ込むのを防いでいる。従来、
保護フィルターはハウジングに超音波ウエルダーで溶着
していたが、その際の超音波微振動がフィルターの破れ
の原因になることがあった。しかし保護フィルターが破
れていると、場合により血液で透析装置を汚染してしま
う他に、次の患者が汚染した透析装置を使用して感染し
てしまう虞がある。そこで本発明者は以上の課題を解決
する為に、鋭意検討を重ねた結果次の発明に到達した。2. Description of the Related Art In an extracorporeal circulation circuit used for artificial dialysis, a drip chamber is arranged on each of an artery side and a vein side, and a pressure monitor line for measuring the pressure in the drip chamber is provided. Is connected to the dialysis machine. A dialysis transducer protection filter (hereinafter abbreviated as “protection filter”) is mounted between the pressure monitor line and the dialysis device to prevent blood from flowing into the dialysis device. Conventionally,
The protective filter was welded to the housing with an ultrasonic welder, and the ultrasonic vibration at that time sometimes caused the filter to break. However, if the protective filter is torn, in addition to possibly contaminating the dialyzer with blood, the next patient may be infected using the contaminated dialyzer. The inventor of the present invention has made intensive studies to solve the above problems, and as a result, has arrived at the next invention.
【０００３】[0003]
【課題を解決する為の手段】［１］本発明は、圧力モニ
ターライン側のハウジング２ａの鍔部５ａと透析装置側
のハウジング２ｂの鍔部５ｂの間にシート状のフィルタ
ー３を挟み込み、該フィルター３を挟み込んだ際、前記
鍔部５ａと５ｂの間に形成される溝１３に樹脂を充填し
て、前記フィルター３の外周を固定した透析用トランス
デューサー保護フィルター１を提供する。 ［２］本発明は、次の各工程を含む前記［１］に記載の
透析用トランスデューサー保護フィルター１の製造方法
を提供する。 （１）前記ハウジング２ａの鍔部５ａと前記ハウジング
２ｂの鍔部５ｂの間に前記フィルター３を挟み込んで金
型に装着する工程、 （２）前記鍔部５ａと５ｂの間に形成される前記溝１３
及び前記金型と鍔部５ａ、５ｂの空間１６に樹脂を充填
して、前記フィルター３を固定すると共に前記鍔部５
ａ、５ｂの外周を前記充填樹脂の被覆部１４で固定する
工程、Means for Solving the Problems [1] In the present invention, a sheet-shaped filter 3 is sandwiched between a flange 5a of a housing 2a on the pressure monitor line side and a flange 5b of a housing 2b on the dialysis machine side. When the filter 3 is sandwiched, the groove 13 formed between the flanges 5a and 5b is filled with resin to provide the dialysis transducer protection filter 1 in which the outer periphery of the filter 3 is fixed. [2] The present invention provides a method for producing the dialysis transducer protective filter 1 according to the above [1], comprising the following steps. (1) a step of sandwiching the filter 3 between a flange 5a of the housing 2a and a flange 5b of the housing 2b and mounting the filter 3 on a mold; (2) a step formed between the flanges 5a and 5b. Groove 13
The space between the mold and the flanges 5a and 5b is filled with a resin to fix the filter 3 and the flange 5
a, fixing the outer periphery of 5b with the covering portion 14 of the filling resin;
【０００４】[0004]
【発明の実施の形態】図１は本発明の保護フィルター１
の概略図で、図２、図３はハウジング２ａ、２ｂの一部
切欠断面図で、図４はフィルター３の型抜き図で、図５
は前記ハウジング２ａと２ｂの間にフィルター３を配置
した保護フィルター組立品１５の概略図である。前記保
護フィルター１は圧力モニターライン側のハウジング２
ａと透析装置側のハウジング２ｂとフィルター３から形
成され、前記ハウジング２ａの鍔部５ａと前記ハウジン
グ２ｂの鍔部５ｂの間にシート状のフィルター３が挟み
込まれている。前記ハウジング２ａはモニターライン嵌
合部７と鍔部５ａから形成されている。更に前記モニタ
ーライン嵌合部７は内筒８と外筒９から形成され、前記
外筒９の内周には螺旋状の凸部６ａを形成している。前
記凸部６は、前記ドリップチャンバーに設けた圧力モニ
ターラインのメスコネクター等（図示せず）を前記内筒
８と外筒９の間に回動しながら押し込んだ時、安易に離
脱しない為に形成している。前記鍔部５ａ内に複数の略
扇状の保護板４ａを放射状に形成している。前記保護板
４ａの端部４ａ１により前記フィルター３の膨らみを抑
えて破れを防ぎ、例えば血液が透析装置側嵌合部１０を
通り前記フィルター３まで流れ込んだ時その血液を元に
戻す為に該フィルター３は圧力モニターライン側に膨ら
むのでその膨らみを抑える為に形成されている。前記鍔
部５ａの端部外周に切欠部１３ａが形成されている。ま
た必要に応じて外筒９の外周の長さ方向に溝または凸部
を形成して、保護フィルター１の脱着が容易に行なえる
ようにしても良い。FIG. 1 shows a protective filter 1 according to the present invention.
2 and 3 are partially cutaway sectional views of the housings 2a and 2b, FIG. 4 is a cutaway view of the filter 3, and FIG.
Is a schematic view of a protective filter assembly 15 in which a filter 3 is arranged between the housings 2a and 2b. The protective filter 1 is a housing 2 on the pressure monitor line side.
a, a housing 2b on the dialysis machine side, and a filter 3, and a sheet-shaped filter 3 is sandwiched between a flange 5a of the housing 2a and a flange 5b of the housing 2b. The housing 2a includes a monitor line fitting portion 7 and a flange portion 5a. Further, the monitor line fitting portion 7 is formed of an inner tube 8 and an outer tube 9, and a spiral convex portion 6 a is formed on the inner periphery of the outer tube 9. The convex portion 6 does not easily come off when a female connector or the like (not shown) of a pressure monitor line provided in the drip chamber is pushed while rotating between the inner cylinder 8 and the outer cylinder 9. Has formed. A plurality of substantially fan-shaped protection plates 4a are radially formed in the flange 5a. The end portion 4a1 of the protective plate 4a suppresses the swelling of the filter 3 to prevent the filter 3 from breaking. For example, when blood flows into the filter 3 through the dialysis device side fitting portion 10, the filter is returned to its original state. Numeral 3 is formed in order to suppress the swelling since it swells toward the pressure monitor line. A notch 13a is formed on the outer periphery of the end of the flange 5a. If necessary, grooves or projections may be formed in the length direction of the outer circumference of the outer cylinder 9 so that the protective filter 1 can be easily attached and detached.
【０００５】前記ハウジング２ｂは透析装置側嵌合部１
０と鍔部５ｂから形成されている。前記透析装置側嵌合
部１０は筒体１１と該筒体１１の外周に螺旋状に形成し
た凸部６ｂから形成されている。前記凸部６ｂは前記凸
部６ａと同じように前記透析装置側嵌合部１０を透析装
置のモニター口又は前記モニター口と連通したチューブ
に装着したロック式オスコネクター等（図示せず）に嵌
合して安易に離脱しない為に形成している。鍔部５ｂ内
に複数の略長方形の保護板４ｂが放射状に形成してい
る。前記保護板４ｂの端部４ｂ１は、前記保護板４ａの
端部４ａ１と同じように前記フィルター３の膨らみによ
る破れを防ぎ、例えば急激な圧力が透析装置側にかかっ
た時フィルター３の膨らみを抑えてフィルターの破れを
防ぐ。前記鍔部５ｂの端部外周に切欠部１３ｂが形成さ
れている。本発明の保護フィルター１は前記フィルター
３を挟んだ際、前記鍔部５ａと５ｂの間に形成される溝
１３に樹脂を充填して前記フィルター３の外周を固定す
ると共に前記鍔部５ａ、５ｂの外周を前記充填樹脂の被
覆部１４で固定している。前記ハウジング２ａ、２ｂの
材質は射出成形加工が可能な材質であれば何でも良く、
例えばＰＰ（ポリプロピレン）、ＰＣ（ポリカーボネイ
ト）、ＰＶＣ（硬質塩化ビニル）やＰＥ（ポリエチレ
ン）等でも良い。The housing 2b has a dialysis device side fitting portion 1
0 and a flange 5b. The dialysis device-side fitting portion 10 is formed of a cylindrical body 11 and a convex portion 6b formed in a spiral shape on the outer periphery of the cylindrical body 11. The convex portion 6b is fitted to a lock-type male connector or the like (not shown) in which the dialysis device side fitting portion 10 is attached to a monitor port of a dialysis device or a tube communicating with the monitor port in the same manner as the convex portion 6a. It is formed so that it does not easily come off. A plurality of substantially rectangular protective plates 4b are formed radially in the flange 5b. The end 4b1 of the protective plate 4b prevents the filter 3 from breaking due to swelling like the end 4a1 of the protective plate 4a, and suppresses the swelling of the filter 3 when, for example, a sudden pressure is applied to the dialysis device. To prevent the filter from breaking. A notch 13b is formed on the outer periphery of the end of the flange 5b. When the protective filter 1 of the present invention sandwiches the filter 3, the groove 13 formed between the flanges 5a and 5b is filled with a resin to fix the outer periphery of the filter 3 and the flanges 5a and 5b. Is fixed by the covering portion 14 of the filling resin. The material of the housings 2a and 2b may be any material as long as the material can be subjected to injection molding.
For example, PP (polypropylene), PC (polycarbonate), PVC (hard vinyl chloride), PE (polyethylene), or the like may be used.
【０００６】前記フィルター３の材質は液体を通さず、
空気を通す疎水性フィルターであれば何でも良く、例え
ば四フッ化エチレン、六フッ化エチレン、変性アクリル
樹脂等でも良い。また必要に応じて、前記ＰＴＦＥの片
面にＰＰ性不織布をラミネート加工して前記フィルター
３の強度を増す場合もある。該フィルター３の孔径は
０．１μｍ〜０．４５μｍが望ましい。０．１μｍ未満
では空気の通過量が少ないため圧力の応答が悪くなり、
０．４５μｍ以上では菌を通過してしまうからである。The material of the filter 3 is impervious to liquid,
Any filter may be used as long as it is a hydrophobic filter that allows air to pass through. For example, ethylene tetrafluoride, hexafluoroethylene, modified acrylic resin, or the like may be used. If necessary, the strength of the filter 3 may be increased by laminating a PP nonwoven fabric on one surface of the PTFE. The pore size of the filter 3 is desirably 0.1 μm to 0.45 μm. If it is less than 0.1 μm, the response of pressure becomes poor due to a small amount of air passing therethrough,
This is because bacteria pass through at a diameter of 0.45 μm or more.
【０００７】次に前記保護フィルター１の製造方法につ
いて説明する。始めにハウジング２ａと２ｂは射出成形
等により成形し、前記フィルター３はシート状に成形し
たフィルターシート１２を前記ハウジング２ａ（２ｂ）
のの鍔部５ａ（５ｂ）の形状に合わせて打ち抜いてお
く。次に前記ハウジング２ａの鍔部５ａと前記ハウジン
グ２ｂの鍔部５ｂの間に前記フィルター３を挟み込んだ
保護フィルター組立品１５をインサート成形金型（図示
せず）に装着する。前記鍔部５ａの切欠部１３ａと前記
鍔部５ｂの切欠部１３ｂを重ね合わせることで前記鍔部
５ａ、５ｂの外周に溝１３が形成される。前記インサー
ト成形金型（図示せず）に保護フィルター組立品１５を
装着した時、前記インサート成形金型と鍔部５ａ、５ｂ
の間に空間１６が形成されるので、前記インサート成形
金型の樹脂注入口（図示せず）を通じて前記溝１３と前
記空間１６に前記ハウジング２ａ（２ｂ）と同じ材質の
溶融樹脂を流し込み充填して、前記フィルター３を固定
すると共に前記鍔部５ａ、５ｂの外周を前記充填樹脂の
被覆部１４で固定する。必要に応じて前記保護フィルタ
ー１を回動して脱着し易いように、被覆部１４の外周の
幅方向に溝または凸部を形成しても良い。Next, a method of manufacturing the protection filter 1 will be described. First, the housings 2a and 2b are formed by injection molding or the like, and the filter 3 is formed by filtering a filter sheet 12 formed into a sheet shape into the housing 2a (2b).
It is punched out according to the shape of the flange 5a (5b). Next, the protective filter assembly 15 having the filter 3 sandwiched between the flange 5a of the housing 2a and the flange 5b of the housing 2b is mounted on an insert molding die (not shown). The groove 13 is formed on the outer periphery of the flanges 5a and 5b by overlapping the notch 13a of the flange 5a and the notch 13b of the flange 5b. When the protective filter assembly 15 is mounted on the insert molding die (not shown), the insert molding die and the flanges 5a, 5b
The space 16 is formed between the grooves 13 and the molten resin of the same material as that of the housing 2a (2b) is poured into the groove 13 and the space 16 through a resin injection port (not shown) of the insert molding die. Then, the filter 3 is fixed, and the outer circumferences of the flanges 5a, 5b are fixed by the covering portion 14 of the filling resin. If necessary, a groove or a convex portion may be formed in the width direction of the outer periphery of the covering portion 14 so that the protective filter 1 is easily rotated and detached.
【０００８】[0008]
【発明の作用効果】フィルター３を挟み込んだハウジン
グ２ａの鍔部５ａとハウジング２ｂの鍔部５ｂの外周に
形成した溝１３及び空間１６に、溶融樹脂を流し込んで
充填してフィルター３の外周を固定した透析用トランス
デューサー保護フィルター１は、従来の超音波溶着方法
のように微振動を与えないので破損することなく確実に
フィルター３をハウジング２ａ、２ｂに固定でき、血液
流入による透析装置の汚染や患者への感染が防止でき
る。The molten resin is poured into and filled in the groove 13 and the space 16 formed on the outer periphery of the flange 5a of the housing 2a and the flange 5b of the housing 2b with the filter 3 interposed therebetween, and the outer periphery of the filter 3 is fixed. Unlike the conventional ultrasonic welding method, the dialysis transducer protection filter 1 does not apply microvibration, so that the filter 3 can be securely fixed to the housings 2a and 2b without being damaged. Infection to patients can be prevented.
【図１】本発明の透析用トランスデューサー保護フィル
ター１の概略図FIG. 1 is a schematic diagram of a dialysis transducer protection filter 1 of the present invention.
【図２】ハウジング２ａの一部切欠断面図FIG. 2 is a partially cutaway sectional view of a housing 2a.
【図３】ハウジング２ｂの一部切欠断面図FIG. 3 is a partially cutaway sectional view of a housing 2b.
【図４】フィルター３の型抜き図FIG. 4 is a cutaway view of the filter 3;
【図５】保護フィルター組立品１５の概略図FIG. 5 is a schematic diagram of a protective filter assembly 15;
１ 透析用トランスデューサー保護フィルター ２ａ、２ｂ ハウジング ３ フィルター ４ａ、４ｂ 保護板 ４ａ１、４ｂ１ 端部 ５ａ、５ｂ 鍔部 ６ａ、６ｂ 凸部 ７ 圧力モニターライン側嵌合部 ８ 内筒 ９ 外筒 １０ 透析装置側嵌合部 １１ 筒体 １２ フィルターシート １３ 溝 １３ａ、１３ｂ 切欠部 １４ 被覆部 １５ 保護フィルター組立品 １６ 空間 DESCRIPTION OF SYMBOLS 1 Dialysis transducer protection filter 2a, 2b Housing 3 Filter 4a, 4b Protection plate 4a1, 4b1 End 5a, 5b Flange 6a, 6b Convex part 7 Pressure monitor line side fitting part 8 Inner cylinder 9 Outer cylinder 10 Dialysis device Side fitting part 11 Cylindrical body 12 Filter sheet 13 Groove 13a, 13b Notch part 14 Covering part 15 Protection filter assembly 16 Space
Claims (2)
鍔部５ａと透析装置側のハウジング２ｂの鍔部５ｂの間
にシート状のフィルター３を挟み込み、該フィルター３
を挟み込んだ際、前記鍔部５ａと５ｂの間に形成される
溝１３に樹脂を充填して、前記フィルター３の外周を固
定したことを特徴とする透析用トランスデューサー保護
フィルター１。1. A sheet-shaped filter 3 is sandwiched between a flange 5a of a housing 2a on the pressure monitor line side and a flange 5b of a housing 2b on the dialyzer side.
When the filter is sandwiched, the groove 13 formed between the flanges 5a and 5b is filled with a resin, and the outer periphery of the filter 3 is fixed.
求項１に記載の透析用トランスデューサー保護フィルタ
ー１の製造方法。 （１）前記ハウジング２ａの鍔部５ａと前記ハウジング
２ｂの鍔部５ｂの間に前記フィルター３を挟み込んで金
型に装着する工程、 （２）前記鍔部５ａと５ｂの間に形成される前記溝１３
及び前記金型と鍔部５ａ、５ｂの空間１６に樹脂を充填
して、前記フィルター３を固定すると共に前記鍔部５
ａ、５ｂの外周を前記充填樹脂の被覆部１４で固定する
工程、2. The method for producing a dialysis transducer protective filter 1 according to claim 1, comprising the following steps. (1) a step of sandwiching the filter 3 between a flange 5a of the housing 2a and a flange 5b of the housing 2b and mounting the filter 3 on a mold; (2) a step formed between the flanges 5a and 5b. Groove 13
The space between the mold and the flanges 5a and 5b is filled with a resin to fix the filter 3 and the flange 5
a, fixing the outer periphery of 5b with the covering portion 14 of the filling resin;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31228499A JP2001129079A (en) | 1999-11-02 | 1999-11-02 | Transducer protective filter for dialysis and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31228499A JP2001129079A (en) | 1999-11-02 | 1999-11-02 | Transducer protective filter for dialysis and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001129079A true JP2001129079A (en) | 2001-05-15 |
Family
ID=18027402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31228499A Pending JP2001129079A (en) | 1999-11-02 | 1999-11-02 | Transducer protective filter for dialysis and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001129079A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006149635A (en) * | 2004-11-29 | 2006-06-15 | Kawasumi Lab Inc | Transducer filter and extracorporeal circulation circuit |
| JP2007190406A (en) * | 2007-03-19 | 2007-08-02 | Kawasumi Lab Inc | Transducer filter |
| US7833321B2 (en) | 2006-09-04 | 2010-11-16 | Nipro Corporation | Protective filter for extracorporeal circulation circuit pressure monitor |
| JP2010537768A (en) * | 2007-09-05 | 2010-12-09 | ジヴエッセ ソチエタ ぺル アチオーニ | Improved protective filter for hemodialysis line |
| US8313742B2 (en) | 2002-03-29 | 2012-11-20 | Depuy Acromed, Inc. | Cell-containing bone graft material |
| JP6185212B1 (en) * | 2016-04-27 | 2017-08-23 | 悠一 佐紺 | Molded body filter using PTFE film, and disposable bag or container for medical suction device using the same |
| US10960330B2 (en) | 2016-08-10 | 2021-03-30 | Murata Manufacturing Co., Ltd. | Filtration filter device |
-
1999
- 1999-11-02 JP JP31228499A patent/JP2001129079A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8313742B2 (en) | 2002-03-29 | 2012-11-20 | Depuy Acromed, Inc. | Cell-containing bone graft material |
| JP2006149635A (en) * | 2004-11-29 | 2006-06-15 | Kawasumi Lab Inc | Transducer filter and extracorporeal circulation circuit |
| JP4727974B2 (en) * | 2004-11-29 | 2011-07-20 | 川澄化学工業株式会社 | Transducer filter and extracorporeal circuit |
| US7833321B2 (en) | 2006-09-04 | 2010-11-16 | Nipro Corporation | Protective filter for extracorporeal circulation circuit pressure monitor |
| JP2007190406A (en) * | 2007-03-19 | 2007-08-02 | Kawasumi Lab Inc | Transducer filter |
| JP4496232B2 (en) * | 2007-03-19 | 2010-07-07 | 川澄化学工業株式会社 | Transducer filter |
| JP2010537768A (en) * | 2007-09-05 | 2010-12-09 | ジヴエッセ ソチエタ ぺル アチオーニ | Improved protective filter for hemodialysis line |
| JP6185212B1 (en) * | 2016-04-27 | 2017-08-23 | 悠一 佐紺 | Molded body filter using PTFE film, and disposable bag or container for medical suction device using the same |
| US10960330B2 (en) | 2016-08-10 | 2021-03-30 | Murata Manufacturing Co., Ltd. | Filtration filter device |
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