WO2004084974A1 - 血液フィルタ装置およびその製造方法 - Google Patents
血液フィルタ装置およびその製造方法 Download PDFInfo
- Publication number
- WO2004084974A1 WO2004084974A1 PCT/JP2004/003835 JP2004003835W WO2004084974A1 WO 2004084974 A1 WO2004084974 A1 WO 2004084974A1 JP 2004003835 W JP2004003835 W JP 2004003835W WO 2004084974 A1 WO2004084974 A1 WO 2004084974A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter
- blood
- dome
- filter device
- wall
- Prior art date
Links
- 239000008280 blood Substances 0.000 title claims abstract description 77
- 210000004369 blood Anatomy 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims description 6
- 230000017531 blood circulation Effects 0.000 claims abstract description 17
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000011347 resin Substances 0.000 claims description 29
- 229920005989 resin Polymers 0.000 claims description 29
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 239000012535 impurity Substances 0.000 abstract description 3
- 238000005192 partition Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 208000007536 Thrombosis Diseases 0.000 description 7
- 239000012528 membrane Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 239000000945 filler Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000037452 priming Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 2
- 238000004382 potting Methods 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- 241000283690 Bos taurus Species 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000007675 cardiac surgery Methods 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000005534 hematocrit Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002759 woven fabric Substances 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
- A61M1/3627—Degassing devices; Buffer reservoirs; Drip chambers; Blood filters
- A61M1/3633—Blood component filters, e.g. leukocyte filters
- A61M1/3635—Constructional details
-
- 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
- A61M1/3627—Degassing devices; Buffer reservoirs; Drip chambers; Blood filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D27/00—Cartridge filters of the throw-away type
- B01D27/04—Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper
- B01D27/06—Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper with corrugated, folded or wound material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/30—Filter housing constructions
-
- 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
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/04—Liquids
- A61M2202/0413—Blood
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/75—General characteristics of the apparatus with filters
-
- 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
- A61M2207/00—Methods of manufacture, assembly or production
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/12—Pleated filters
- B01D2201/127—Pleated filters with means for keeping the spacing between the pleats
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
- Y10T156/1051—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina by folding
Definitions
- the present invention relates to a blood filter device used for filtering foreign substances, thrombus, and the like in an artificial heart-lung circuit.
- the present invention relates to a blood filter device having a structure capable of easily removing bubbles staying inside a filter, and a method for manufacturing the same.
- a cylindrical screen filter formed of a polyester screen filter of about 20 to 40 / m is used.
- a sheet-like filter medium is folded by forming a plurality of pleats, and the peaks of each pleat are outward and the valleys are internal.
- a cylindrical shape is formed radially, and is mounted in a cylindrical housing.
- Blood flows in the radial direction of the shaped filter medium and passes through the filter medium, so that dust, impurities, thrombus and the like in blood can be effectively eliminated.
- the residual air bubbles inside the filter are separated by an external impact such as flipping the housing with a finger.
- an impact is applied immediately from the area where the air bubbles adhere, the air bubbles are temporarily separated from the filter, but easily adhere to the pleats of the adjacent filter again, and the air bubbles are guided to the exhaust port located above Is difficult to do. Disclosure of the invention
- An object of the present invention is to provide a blood filter device capable of effectively removing impurities, thrombus, and the like in blood and easily removing bubbles remaining in the filter, in order to solve the above problems. With the goal.
- a blood filter device includes: a housing having a dome part forming an upper structure, a filter holding part forming a central part structure, and a bottom part forming a lower structure; An inlet provided to allow blood to flow in a direction along the inner wall, an air outlet provided at the top of the dome portion, and a filter arranged at the filter holding portion for filtering foreign matter in blood. A blood outlet provided at the bottom portion, wherein blood flowing into the dome from the inlet passes through the filter holding portion and flows out from the outlet.
- the fill is a sheet
- the filter medium forms a plurality of pleats and is folded, and has an overall flat plate-like outer shape in which the envelope surface of the top of each pleat is flat, and the inner cavity of the housing is formed on the dome side and the bottom side. It is arranged in a partition.
- the method for manufacturing a blood filter device of the present invention is a method for manufacturing the blood filter device having the above-described configuration. First, the filter is formed by folding a sheet-shaped filter medium into a plurality of pliers to form an overall flat plate-like outer shape having a flat envelope surface at the top of each ply.
- the filter is disposed in the lumen of the filter holding portion of the housing with the flat surface of the outer shape oriented in the horizontal direction, and the centrifugal force in the horizontal direction with the center of the filter holding portion as the center.
- the resin is filled between the inner wall of the filter holding portion and the outer peripheral portion of the filter and cured, and the filter is fixed to the inner wall of the filter holding portion by the resin.
- FIG. 1A is a front view of a blood filter device according to an embodiment of the present invention
- FIG. 1B is a plan view thereof
- FIG. 1A is a front view of a blood filter device according to an embodiment of the present invention
- FIG. 1B is a plan view thereof
- FIG. 1A is a front view of a blood filter device according to an embodiment of the present invention
- FIG. 1B is a plan view thereof
- FIG. 1A is a front view of a blood filter device according to an embodiment of the present invention
- FIG. 1B is a plan view thereof
- FIG. 2 is a perspective view showing a blood flow in the upper part of the blood filter device
- FIG. 3A is a perspective view showing a schematic configuration of a filter holder in the blood filter device
- FIG. 3B is a plan view thereof.
- FIG. 4A is a cross-sectional view showing the upper half of the housing constituting the blood filter device
- FIG. 4B is a bottom view thereof
- FIG. 4C is a cross-sectional view taken along line AA in FIG. 4B
- FIG. 5A is a plan view showing the lower half of the housing
- FIG. 5B is a cross-sectional view thereof
- FIG. 6 is a partially cutaway view showing a method of manufacturing a blood filter device according to an embodiment of the present invention.
- Perspective view is a plan view showing the lower half of the housing
- FIG. 5B is a cross-sectional view thereof
- FIG. 6 is a partially cutaway view showing a method of manufacturing a blood filter device according to an embodiment of the present invention.
- FIG. 7 shows another configuration of the file holder in the embodiment of the present invention. It is a W plan view.
- a filter having a flat outer shape as a whole in which a sheet-like filter medium is folded to form a plurality of pleats and an envelope surface at the top of each pleat is flat, It is used with the flat surface direction. According to this configuration, since there is no obstacle in the vertical direction of the filter, air bubbles remaining on the filter surface during the priming operation can be easily removed only by applying a physical impact to the housing. .
- a resin is filled and sealed between an inner wall of the filter holding portion and an outer peripheral portion of the filter, and the filter is fixed to an inner wall of the filter holding portion by the resin. Structure.
- the fixing of the filter and the sealing between the inner wall of the filter holding portion and the outer peripheral portion of the filter can be reliably performed.
- a ratio hZr between the height h of the dome portion and the inner diameter r of the dome portion on the filter holding portion side is 0.26 to 1.06. More preferably, the ratio hZr is 0.44 to 0.91.
- the ratio dZr of the depth d of the bottom portion to the inner diameter r of the bottom portion on the filter holding portion side is 0.11 to 0.30.
- the inner diameter r of the dome portion on the filter holding portion side is 27 to 33 mm, and the height h of the dome portion is 7 to 35 mm. This makes it possible to ensure a sufficient amount of trapped air bubbles. More preferably, the height h of the dome portion is 12 to 3 Omm. More preferably, the depth d of the bottom is 3 to 1 Omm. Thereby, the balance between the bubble removal performance and the blood filling amount is appropriately set.
- the pleat interval of the filter is set to 1.6 to 3.7 mm, and the pleating height is set to 5 to 3 Omm. This facilitates air bubble removal after the priming operation.
- the filter can be formed only of a filter medium having a function of filtering foreign substances.
- the filter holder may be configured to have a cylindrical lumen having a circular cross section in the horizontal direction.
- the inner surface of the dome portion may be configured to have a shape in which the outer peripheral length decreases as going upward. It is preferable that the inner surface of the bottom has a shape having no irregularities.
- a resin is sealed between the inner wall of the filter holding portion and the outer peripheral portion of the filter by potting while applying a centrifugal force.
- a vertical holding rib is provided on an inner side wall of the filter holding portion so as to correspond to an end of each pleat of the filter.
- the ends of the pleats are inserted into the holding ribs, respectively, so that the filler is temporarily held on the inner wall of the filler holder.
- the housing is divided into upper and lower halves in the filter holding portion, and the filter is disposed in a lumen of the filter holding portion in one of the upper and lower halves; After being combined with the other of the upper and lower halves, the resin filling and curing steps are performed.
- FIG. 1A is a front view of the blood filter device
- FIG. 1B is a plan view thereof
- FIG. 1C is a sectional view thereof.
- Reference numeral 1 denotes a housing made of, for example, resin, which is a dome portion forming an upper structure, a filter holding portion forming a central portion structure 3, and And a bottom 4 forming a substructure.
- the shape of the cross section of the housing 1 is circular.
- An inflow port 5 is provided on the side surface of the dome part 2 so that blood flows in a horizontal direction and along the inner wall of the dome part 2.
- an air discharge port 6 for discharging air such as air bubbles is provided.
- the bottom 4 is provided with a blood outlet 7. The liquid flowing into the dome portion 2 from the inlet 5 passes through the filter holding portion 3 and flows out from the outlet 7.
- the bottom 4 also has a support 4a.
- the support portion 4a is a portion used when installing the filter device, and has no relation to the filtering function.
- the dome portion 1 has a shape such that the inner diameter gradually decreases as it goes upward. As a result, the air bubbles mixed into the blood are easily separated, and the separated air bubbles rise along the inner peripheral surface of the dome portion 1.
- the dome 1 has a circular cross section and the inlet 5 is provided so that blood flows in a horizontal direction and along the inner wall of the dome 2, the blood flowing from the inlet 5 is A swirling flow is shown along the inner peripheral surface as shown by the solid line in FIG.
- the swirling blood flow gradually stalls, flows downward gradually from the stall part, and flows into the filter holding part 3, as shown by the broken line in FIG.
- the shape of the dome portion 1 may be any shape other than the shape shown in FIG. 1A or the like, as long as the outer diameter gradually decreases toward the air discharge port 6. For example, a conical shape or a funnel shape can be used.
- the filter holder 3 has a cylindrical shape. As shown in FIG. 1C, the filter holder 3 is provided with a filter 8 for filtering foreign substances in blood. As shown conceptually in FIGS. 3A and 3B, the filter 8 is formed by folding a filter medium made of a sheet-like mesh to form a plurality of pleats 8a and forming a top portion of each of the pleats 8a. Envelope surface is flat. I do. The filter 8 partitions the lumen of the housing 1 into a dome portion 2 side and a bottom portion 4 side. Each pleat 8a is oriented in the chord direction of the filter holder 3. The thick solid line indicating the pleat 8a in FIG. 3B indicates a peak, and the thin solid line indicates a valley.
- the filter holder 3 is shown as a cylindrical independent form, but actually, it is formed in a form continuous with the dome part 2 or the bottom part 4. Is done.
- a sealing resin 9 made of, for example, urethane resin is filled between the inner wall of the filter holding portion 3 and the outer peripheral portion of the filter 8.
- the filter 8 is fixed to the inner wall of the filter holding unit 3 by a sealing resin 9.
- bubbles remaining when the filling liquid passes through the filter 8 during the priming operation can be easily removed by applying a vertical shock to the filter 8 from the outside by, for example, flipping the bottom 4 with a finger.
- Air is discharged from the air outlet 6 above the dome 2 or the outlet 7 at the bottom 4. That is, since the air bubbles separated from the filter 8 have no obstacles in the vertical direction, they do not adhere to the other parts of the filter 8 again, and the air outlet 6 above the dome portion 2 or the outlet of the bottom portion 4 is securely formed. Reaches 7 and is discharged.
- filter 8 has a structure in which the envelope at the top of each pleat has a flat outer shape as a whole, and the following effects are also obtained.
- the filter 8 since the filter 8 itself has a strong force to maintain the shape, the filter 8 can be formed only by the mesh of the filter medium.
- the bottom 4 forms a predetermined space below the filter 8. Thereby, the pressure loss of the blood flow passing through the filter device can be reduced within a practically negligible range.
- the inner surface of the bottom 4 is smooth and has no protrusions or depressions. Thus, the blood flow that has passed through the filter holding unit 3 is guided to the outlet 7 without stagnation, and blood clots and the like generated in the blood that has passed through the filter holding unit 3 are suppressed.
- the bottom 4 may be formed so as to have a direction toward the center, or may be formed so as to have a direction along the side surface of the bottom 4.
- a filter material a mesh-like material, a woven fabric / non-woven fabric, or a combination thereof can be used.
- polyester, polypropylene, polyamide, fluorine fiber, stainless steel or the like can be used.
- the shape of the cross section of the housing 1, especially the dome portion 2 is preferably circular because it is necessary to generate a swirling flow of blood.However, even if another shape such as an ellipse is used, It is possible to obtain a similar effect.
- the inner diameter r (see FIG. 1C) of the dome part 2 on the filter holder 3 side is the same as the inner diameter of the sealing resin 9 and the inner diameter of the bottom part 4 on the filter holder 3 side. There is a configuration in which there is no step on the inner surface of the housing 1 at those boundaries.
- the size of the filter can be reduced as compared with the conventional configuration while maintaining the filtration function in a practically sufficient range.
- the parameters are the inner diameter r of the dome part 2 shown in Fig. 1C, the height h of the dome part 2, the depth d of the bottom part 4, the ratio hZr of the height h of the dome part 2 to the inner diameter r, and the depth of the bottom part 4
- the ratio d / r between the length d and the inner diameter r is defined.
- the ratio h / r is preferably 0.26 to 1.06. If it is smaller than 0.26, the angle of the inner wall surface of the dome portion 2 is too close to horizontal, and the air bubble removal performance becomes insufficient. If it exceeds 0.61, the filling amount of the dome part 2 becomes too large. More preferably, the ratio h / r is 0.44 to 0.91.
- the ratio dZr is preferably from 0.11 to 0.30. If it is smaller than 0.11, the angle of the inner wall surface of the bottom portion 4 is too close to horizontal, so that the bubble removing performance becomes insufficient. If it exceeds 0.30, the filling amount of the bottom 4 becomes too large.
- the inner diameter r of the dome 2 is specified to be 27 to 33 mm, and the height h of the dome 2 is specified to be 7 to 35 mm.
- the height h is between 12 and 30 mm.
- the bubble trapping amount is defined as the amount of bubbles trapped and stored in the dome portion 2 when the liquid for measurement passes through the filter device and is blocked by the filter 8. The measuring method will be described later. The effect on the amount of trapped air bubbles when the parameters are defined as described above will be described in detail below.
- a normal blood filter used for infants requires a maximum blood flow of 1.5 L / min for practical use.
- the mesh which is the filter medium, needs to have a substantial opening area of 8 cm 2 or more.
- the aperture ratio is preferably 16% to 28%. If it is less than 16%, the pressure loss of the blood stream becomes too large. On the other hand, if it exceeds 28%, the function of removing foreign substances or thrombus of 40 m or more, which is a practically required filtering ability, cannot be obtained.
- the mesh area that is, the fill film area, needs to be 29 cm 2 to 50 cm 2 . Thereto, when considering safety factor of 5 times 1. to variations in operating conditions, the mesh area (filter membrane area) is required 44 cm 2 ⁇ 75 cm 2.
- the blood flow rate 1.
- the range of the inner diameter r of the dome part 2 and the height h of the dome part 2 to obtain the amount of trapped air bubbles of 5 mL or more at 5 L / min were experimentally determined. r is 27-33mm, height is h? 2020 mm.
- the amount of trapped air bubbles was measured as follows. Bovine blood citrate (37 ° C, Ht. 35% TP 6 g / dL) was passed through the filter device shown in Fig. 1 as a liquid for measurement. H t. Indicates hematocrit, and TP indicates plasma total protein concentration. Bubbles were injected into the liquid for measurement before flowing into the filter device at an injection rate of 2 mLZmin. While observing bubbles contained in the measurement liquid flowing out of outlet 7, bubbles of 40 m or more were detected. The measuring liquid was kept flowing until discharged. When 40 or more bubbles were detected, the amount (volume at atmospheric pressure) of bubbles that had accumulated in the dome portion 2 up to that point was measured and used as the value of the amount of trapped bubbles.
- the filter device of the present embodiment is smaller in volume to about half the volume of the conventional device. Is possible.
- the depth d of the bottom part 4 be in the range of 3 to 10 mm in relation to the blood filling amount in the filter device.
- the reasons are as follows. First, the depth d needs to be 3 mm or more in order to easily discharge air bubbles from the outlet 7 of the blood bottom 4 passing through the filter device. In addition, the depth d must be 10 mm or less so that the filling amount is 15 mL or less, which is required in infant cases.
- the pleat interval and the pleat height which are parameters regarding the pleat of the filter 8, are specified to facilitate the removal of air bubbles.
- the pleat spacing is 1.6-3.7 mm and the pleat height is 5-30 mm. If the gap is less than 1.6 mm, it will be difficult to remove air bubbles, and if it exceeds 3.7 mm, it will be difficult to secure the filter membrane area. If the pleat height is less than 5 mm, it is difficult to secure the filter membrane area. If the pleat height exceeds 30 mm, the volume of the filter holding unit 3 increases accordingly, and the blood filling volume increases. Cause.
- FIGS. 5A, 5B, and FIG. 4A is a cross-sectional view showing the upper half 1a of the housing constituting the blood filter device
- FIG. 4B is a bottom view thereof
- FIG. 4C is a cross-sectional view taken along line AA in FIG. 4B.
- FIG. 5A is a cross-sectional view showing the lower half 1 b of the eight housing
- FIG. It is a top view. Note that only the filter 8 and the sealing resin 9 are shown in FIG. 4C.
- the basic structure is the same as above, but these figures show retaining ribs 10 (see FIGS. 4A-4C), which are structures for provisionally supporting the filter 8.
- the upper half 1a and the lower half 1b of the housing are formed with a holding part inner cylinder 3a and a holding part outer cylinder 3b for constituting the filter holding part 3, respectively.
- the housing is integrated.
- the retaining rib 10 is provided on the upper half la as shown in FIGS. 4A to 4C.
- the holding rib 10 is arranged on the inner peripheral wall of the holding portion inner cylinder 3a so as to form a groove corresponding to the end of each pleat 8a of the filter 8 (see FIG. 3A).
- the depth of the groove formed by the holding rib 10 corresponds to the height of the holding rib 10.
- a pair of notches 11a are formed in the holding portion inner cylinder 3a of the upper half 1a.
- a through-hole 11b is formed in the outer cylinder 3b of the holding section of the lower half 1b at a position corresponding to the pair of cutouts 11a of the inner cylinder 3a of the holding section.
- the upper and lower halves 1 a, lb of the eight housings and the filter 8 are formed as described above.
- the filter 8 is placed in the inner cavity of the holding portion inner cylinder 3a of the upper half 1a of the housing with the outer surface of the filter 8 facing the horizontal direction.
- the end of each pleat of the filter 8 is inserted between the holding ribs 10 to temporarily hold the filter 8 on the inner wall of the holding portion inner cylinder 3a.
- the housing 1 is integrated by fitting the upper and lower halves la and lb in the holding portion inner and outer cylinders 3a and 3b.
- the housing 1 in which the filter 8 is stored is installed in the rotary jig 12.
- the rotating jig 12 has a bore 12 a having a predetermined shape for supporting the housing 1. By rotating the rotary jig 12, the housing 1 rotates together.
- the rotating jig 12 also has a resin reservoir 13 in which an encapsulating resin such as urethane resin is stored at an upper portion, and a resin supply path 14 extending from the resin reservoir 13 to a side surface of the holding unit outer cylinder 3b. Is provided.
- the sealing resin supplied to the side of the holding unit outer cylinder 3 b passes through the notch 11 a and the through hole 11 1 b (see FIGS. 4A to 5C and FIGS. Enter lumen 3b.
- Filler holder 3 Seals the space between the inner side wall of filter holder 3 and the outer periphery of filter holder 8. 6) The inside of the boundary between the fill holder 3 and the dome 2 or the bottom 4 A flow path section having no step on the wall surface is formed.
- the manufacturing process is extremely simple, which is effective in reducing the manufacturing cost.
- it is advantageous for improving the bubble removing performance.
- the inner wall surface of the housing becomes smooth, which is effective for preventing thrombus generation and improving air bubble removal.
- the filter 8 may be folded not only in a form in which the direction of the pre-aperture 8a is oriented in the chord direction of the filter holding portion 3 as shown in FIGS. It may be folded as follows.
- the filter 15 has a form in which the direction of the pleat 15 a is radially oriented from the center point of the filter holding unit 3. Even if the pleats 12a have such a shape, the same effect as described above can be obtained.
- the present invention is not limited to folding the filter 8 in a pleated shape.
- a filter having a wavy crest portion and a valley portion may be configured as shown in FIGS. 3A, 3B or 7. You may. Industrial potential
- the foreign substance in a blood, a thrombus, etc. can be reliably eliminated, and the air bubbles which adhered to the filter top surface will be physically shocked, such as hitting a housing from up and down. Just giving it can be easily eliminated.
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Cardiology (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- External Artificial Organs (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005504038A JP4164770B2 (ja) | 2003-03-24 | 2004-03-22 | 血液フィルタ装置およびその製造方法 |
US10/550,070 US20060191841A1 (en) | 2003-03-24 | 2004-03-22 | Blood filter device and method of producing the same |
EP04722424A EP1607110B1 (en) | 2003-03-24 | 2004-03-22 | Blood filter device and method of producing the same |
AT04722424T ATE542557T1 (de) | 2003-03-24 | 2004-03-22 | Blutfiltervorrichtung und verfahren zu ihrer herstellung |
CA002519812A CA2519812C (en) | 2003-03-24 | 2004-03-22 | Blood filter device and method of producing the same |
HK06109071.7A HK1088568A1 (en) | 2003-03-24 | 2006-08-15 | Blood filter device and method for producing the same |
US12/721,750 US20100163163A1 (en) | 2003-03-24 | 2010-03-11 | Blood filter device and method of producing the same |
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JP2003081092 | 2003-03-24 | ||
JP2003-081092 | 2003-03-24 |
Related Child Applications (1)
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US12/721,750 Division US20100163163A1 (en) | 2003-03-24 | 2010-03-11 | Blood filter device and method of producing the same |
Publications (1)
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WO2004084974A1 true WO2004084974A1 (ja) | 2004-10-07 |
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PCT/JP2004/003835 WO2004084974A1 (ja) | 2003-03-24 | 2004-03-22 | 血液フィルタ装置およびその製造方法 |
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US (2) | US20060191841A1 (ja) |
EP (1) | EP1607110B1 (ja) |
JP (1) | JP4164770B2 (ja) |
KR (1) | KR100694607B1 (ja) |
CN (1) | CN100553697C (ja) |
AT (1) | ATE542557T1 (ja) |
CA (1) | CA2519812C (ja) |
HK (1) | HK1088568A1 (ja) |
WO (1) | WO2004084974A1 (ja) |
Cited By (10)
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JP2006212075A (ja) * | 2005-02-01 | 2006-08-17 | Kawasumi Lab Inc | 熱交換器 |
WO2007039977A1 (ja) * | 2005-10-04 | 2007-04-12 | Jms Co., Ltd. | 血液フィルタ装置およびその製造方法 |
WO2007086322A1 (ja) * | 2006-01-27 | 2007-08-02 | Jms Co., Ltd. | 血液フィルタ装置およびその製造方法 |
JP2008183230A (ja) * | 2007-01-30 | 2008-08-14 | Jms Co Ltd | 血液フィルタ装置 |
JP2008194386A (ja) * | 2007-02-15 | 2008-08-28 | Jms Co Ltd | カーディオトミーフィルタ及び貯血槽 |
JP2010234202A (ja) * | 2009-03-30 | 2010-10-21 | Asahi Kasei Chemicals Corp | プリーツ成形体の製造方法及びプリーツ成形体 |
JP2010234201A (ja) * | 2009-03-30 | 2010-10-21 | Asahi Kasei Chemicals Corp | プリーツ成形体の製造方法及びプリーツ成形体 |
US8057672B2 (en) | 2007-11-13 | 2011-11-15 | Electronics And Telecommunications Research Institute | Disposable multi-layered filtration device for the separation of blood plasma |
JP2015505609A (ja) * | 2012-01-24 | 2015-02-23 | コーニンクレッカ フィリップス エヌ ヴェ | カートリッジ用のフィルタユニット |
JP2015513305A (ja) * | 2011-10-03 | 2015-05-07 | インテグリス・インコーポレーテッド | モジュール式フィルタカセット |
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US8439858B2 (en) * | 2007-10-17 | 2013-05-14 | Medtronic, Inc. | Arterial blood filter |
US10195320B2 (en) * | 2012-04-12 | 2019-02-05 | Sisu Global Health, Inc. | Blood filtering component, apparatus, and method |
CN104902941B (zh) * | 2013-02-12 | 2017-05-03 | 东丽株式会社 | 血液净化柱 |
AU2016378184B2 (en) | 2015-12-23 | 2022-04-21 | Fmc Corporation | In situ treatment of seed in furrow |
CN108495663A (zh) * | 2016-01-08 | 2018-09-04 | 西苏全球健康公司 | 血液过滤组件、设备和方法 |
CN106215265B (zh) * | 2016-08-16 | 2018-09-11 | 珠海健帆生物科技股份有限公司 | 血液净化器排气方法 |
CN114225142A (zh) * | 2021-10-29 | 2022-03-25 | 南京国青血液净化科技有限公司 | 血液净化装置 |
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- 2004-03-22 CA CA002519812A patent/CA2519812C/en not_active Expired - Fee Related
- 2004-03-22 AT AT04722424T patent/ATE542557T1/de active
- 2004-03-22 US US10/550,070 patent/US20060191841A1/en not_active Abandoned
- 2004-03-22 KR KR1020057017766A patent/KR100694607B1/ko not_active IP Right Cessation
- 2004-03-22 CN CNB2004800082773A patent/CN100553697C/zh not_active Expired - Fee Related
- 2004-03-22 WO PCT/JP2004/003835 patent/WO2004084974A1/ja active Application Filing
- 2004-03-22 EP EP04722424A patent/EP1607110B1/en not_active Expired - Lifetime
- 2004-03-22 JP JP2005504038A patent/JP4164770B2/ja not_active Expired - Fee Related
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- 2006-08-15 HK HK06109071.7A patent/HK1088568A1/xx not_active IP Right Cessation
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Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2006212075A (ja) * | 2005-02-01 | 2006-08-17 | Kawasumi Lab Inc | 熱交換器 |
WO2007039977A1 (ja) * | 2005-10-04 | 2007-04-12 | Jms Co., Ltd. | 血液フィルタ装置およびその製造方法 |
US8162152B2 (en) | 2005-10-04 | 2012-04-24 | Jms Co., Ltd. | Blood filter device and method of manufacturing the same |
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JP2010234201A (ja) * | 2009-03-30 | 2010-10-21 | Asahi Kasei Chemicals Corp | プリーツ成形体の製造方法及びプリーツ成形体 |
JP2010234202A (ja) * | 2009-03-30 | 2010-10-21 | Asahi Kasei Chemicals Corp | プリーツ成形体の製造方法及びプリーツ成形体 |
JP2015513305A (ja) * | 2011-10-03 | 2015-05-07 | インテグリス・インコーポレーテッド | モジュール式フィルタカセット |
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JP2015505609A (ja) * | 2012-01-24 | 2015-02-23 | コーニンクレッカ フィリップス エヌ ヴェ | カートリッジ用のフィルタユニット |
Also Published As
Publication number | Publication date |
---|---|
ATE542557T1 (de) | 2012-02-15 |
CN100553697C (zh) | 2009-10-28 |
CN1764483A (zh) | 2006-04-26 |
EP1607110B1 (en) | 2012-01-25 |
KR20050110691A (ko) | 2005-11-23 |
HK1088568A1 (en) | 2006-11-10 |
EP1607110A1 (en) | 2005-12-21 |
US20100163163A1 (en) | 2010-07-01 |
CA2519812A1 (en) | 2004-10-07 |
JPWO2004084974A1 (ja) | 2006-06-29 |
CA2519812C (en) | 2009-01-13 |
EP1607110A4 (en) | 2007-08-22 |
US20060191841A1 (en) | 2006-08-31 |
JP4164770B2 (ja) | 2008-10-15 |
KR100694607B1 (ko) | 2007-03-13 |
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