WO1998050090A1 - Unite de filtrage pour eliminer les bacteries dans un rein artificiel, et rein artificiel avec filtre d'elimination de bacteries - Google Patents
Unite de filtrage pour eliminer les bacteries dans un rein artificiel, et rein artificiel avec filtre d'elimination de bacteries Download PDFInfo
- Publication number
- WO1998050090A1 WO1998050090A1 PCT/JP1997/001548 JP9701548W WO9850090A1 WO 1998050090 A1 WO1998050090 A1 WO 1998050090A1 JP 9701548 W JP9701548 W JP 9701548W WO 9850090 A1 WO9850090 A1 WO 9850090A1
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- WIPO (PCT)
- Prior art keywords
- hemodialyzer
- sterilization
- filter
- outlet
- inlet
- Prior art date
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Classifications
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- 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
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
- A61M1/168—Sterilisation or cleaning before or after use
-
- 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
- A61M2205/7518—General characteristics of the apparatus with filters bacterial
Definitions
- the present invention relates generally to medical devices, and more particularly, to a bactericidal filter unit, which is used to maintain a dialysis fluid system of a hemodialyzer used for blood purification therapy or the like in an aseptic state, and hemodialysis with a bactericidal filter. About the vessel. Of these, especially to facilitate the reuse of hemodialyzers. Background art
- the illustrated hemodialyzer 1 is constructed by enclosing a number of hollow fiber dialysis membranes 2 inside a tube body 1a, and the blood system and the dialysate are internally formed by the dialysis membrane 2.
- the system is divided into: Generally, the blood system is set inside the hollow fiber, and the dialysate system is set outside the hollow fiber.
- a blood inlet 3A and a blood outlet 3B communicating with the blood system are opened, and a dialysate inlet 4A and a dialysate outlet 4B communicating with the dialysate system are also opened. It has been.
- the blood flows in one direction into the blood-based hollow fiber from the blood inlet 3A to the blood outlet 3B, while the dialysate is From the viewpoint of dialysis efficiency, the outside of the dialysate-based hollow fiber was flowed from the eluate 4A to the dialysate outlet 4B so as to be opposite to the blood flow.
- the direction of flow of blood and dialysate is not always fixed, and blood coagulation and excessive adhesion of proteins to the blood system of the hemodialyzer 1 are prevented.
- the blood inflow port 3A and the blood outflow port 3B are opposite to each other during use during treatment, and the dialysate inflow port 4A and the dialysate outflow port 4B are simultaneously used so as to be opposite to each other.
- the hemodialyzer 1 as described above was a single use disposable in Japan.
- the main reason for this is that, as described above, the inside of the hemodialyzer 1 is divided into a blood system and a dialysate system by the dialysis membrane 2, and the dialysate system is required to keep the dialysate sterile. This is because it is difficult and it is contaminated by pacteria.
- the new hemodialyzer 1 was recognized as a foreign substance for blood, and was inadequate in biocompatibility and could cause side effects. Therefore, rather than disposing a new hemodialyzer 1 only once each time, the blood system of the hemodialyzer 1 is coated with protein components in the blood when reused for the same patient. Biocompatibility was improved and also economical. For the above reasons, it is common practice to reuse hemodialyzers 1 multiple times overseas. Such a hemodialyzer 1 was reused by washing and disinfecting after each use, and was kept in a state free from bacterial contamination until the next use.
- the dialysate system of the hemodialyzer 1 is contaminated by bacteria during dialysis, and the bacteria cannot pass through the dialysis membrane 2, but the toxins (eg, endotoxin) produced by the bacteria can pass through the dialysis membrane 2.
- the toxins eg, endotoxin
- the above-mentioned disinfectant that disinfects and disinfects the hemodialyzer 1 is toxic to living organisms, it should be thoroughly washed with sterile water immediately before reuse, until there is no residual disinfectant in the hemodialyzer 1. There must be.
- the disinfectant since the disinfectant is inherently adsorbed to the dialysis membrane 2, it takes a considerable amount of time and effort to sufficiently remove the disinfectant, resulting in an increase in cost. there were.
- the cleaning of the hemodialyzer 1 and the sterilization and disinfection work with chemicals involved the risk of virus infection and phytotoxicity to healthcare workers, while the hemodialyzer 1 used a dialysis membrane.
- the inner wall is coated with protein components to improve biocompatibility.
- the present invention has been made in view of the above-mentioned problems of the prior art. Therefore, it is possible to effectively prevent bacterium contamination of a dialysate system in a hemodialyzer using a sterilization filter, and A sterilization filter unit for hemodialysis machines that can eliminate the complicated work of directly disinfecting and disinfecting the dialysate system during use, without compromising biocompatibility, and in which the sterilization filter itself can be sufficiently sterilized and washed. And to provide a hemodialyzer with a sterilization filter.
- the present invention relates to a disinfecting filter unit used for keeping a hemodialyzer sterile
- a first sterilization chamber divided into an inlet side and an outlet side by a sterilization filter
- the outlet of the first sterilization chamber, which communicates with the dialysate flow population of the hemodialyzer, and the inlet of the second sterilization chamber, which communicates with the dialysate outlet of the hemodialyzer, are connected close to each other.
- the connecting part J is connected to the middle part on the outlet side and the middle part on the inlet side. And a dialysis position where dialysis fluid flows into and out of the hemodialyzer without blocking the flow of liquid into and out of the hemodialyzer.
- This is a sterilization filter unit for a hemodialyzer, which is provided with opening and closing means.
- the present invention provides the filter case, wherein a first case tube forming a first sterilization chamber in which a number of hollow fiber type sterilization filters are sealed, and a second case tube forming a second sterilization chamber. Consisting of
- Either one of the outlet and the outlet is disposed on one end of the sterilization chamber in each of the case tubes that communicates with the hollow fiber, and the outlet and the outlet on the other end that communicate with the outside of the hollow fiber.
- the present invention provides the filter case, wherein the filter case is detachably detachable so that a peripheral edge thereof is in close contact with the intermediate substrate side in a state where a flat membrane-type disinfecting filter is interposed on each of the front and rear surfaces thereof. It consists of a pair of holding plates to be assembled, on the middle side of each peripheral edge between the surface of the intermediate substrate and the inner surface of the holding plate, and between the inlet side of the dialysate by one flat membrane type sterilization filter held between them. While forming the first sterilization chamber divided into the discharge port side, the other flat membrane type clamped between the inner peripheral edges of the back surface of the intermediate substrate and the inner surface of the other clamping plate.
- the second sterilization chamber is divided into a dialysate inlet and an outlet by a sterilization filter, and an inlet communicating with the first sterilization chamber is arranged on the holding plate.
- a delivery port communicating with the second sterilization chamber is arranged on the other holding plate,
- the sterilization filter unit for a hemodialyzer communicates with the first sterilization chamber and communicates with the dialysate inlet of the hemodialyzer, and communicates with the second sterilization chamber and communicates with the dialysate outlet of the hemodialyzer.
- the present invention is a hemodialyzer with a sterilization filter, wherein the sterilization filter unit is previously configured as a unit with a hemodialyzer.
- the present invention relates to a sterilization filter turit used for maintaining a hemodialyzer in an aseptic state, comprising a filter case divided into an inlet side and an outlet side by a sterilization filter.
- a connecting portion that connects the outlet of the filter case and the dialysate inflow port of the hemodialyzer to each other; a disinfection position for preventing inflow of liquid to the hemodialyzer side; and a dialysate to the hemodialyzer side.
- a dialysis filter unit for a hemodialyzer characterized in that an opening / closing means is provided which can be switched to a position at the time of dialysis in which the blood flows.
- the present invention is a hemodialyzer with a sterilization filter, wherein the sterilization filter unit is previously configured as a unit with a hemodialyzer.
- FIG. 1 is a front view schematically showing a state in which a sanitizing filter unit according to a first embodiment of the present invention is connected to a hemodialyzer.
- FIG. 2 is a front view for explaining a state at the time of dialysis of the sterilization filter unit according to the first embodiment of the present invention.
- FIG. 3 is a front view for explaining a state at the time of disinfection of the sterilization filter unit according to the first embodiment of the present invention.
- FIG. 4 is a front view (a) and a cross-sectional view (b) showing a state in which a switching valve constituting the sterilization filter unit according to the first embodiment of the present invention is in a dialysis position.
- FIG. 5 is a front view (a) and a cross-sectional view (b) showing a state in which a switching valve constituting the sterilization filter unit according to the first embodiment of the present invention is in a disinfection position.
- FIG. 6 is a front view schematically showing a sterilization filter unit according to a modification of the first embodiment of the present invention.
- FIG. 7 is a front view schematically showing a hemodialyzer with a sterilization filter unit according to a second embodiment of the present invention.
- FIG. 8 is an exploded side view showing a sterilization filter unit according to a third embodiment of the present invention.
- FIG. 9 is a sectional view showing a sanitizing filter unit according to a third embodiment of the present invention.
- FIG. 10 is a front view showing a sanitizing filter unit according to a third embodiment of the present invention.
- FIG. 11 is a front view (a) and a cross-sectional view (b) showing a state in which a switching valve constituting a sterilization filter unit according to a third embodiment of the present invention is in a disinfection position.
- FIG. 12 is a sectional view showing a conventional hemodialyzer. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 to 5 show a first embodiment representing the present invention
- FIG. 6 shows a modification of the first embodiment.
- the sanitizing filter unit 20 is designed to keep the hemodialyzer 10 sterile during use, thereby eliminating the need for sterilization and disinfection and facilitating reuse of the hemodialyzer 10.
- the unit is designed to keep the hemodialyzer 10 sterile during use, thereby eliminating the need for sterilization and disinfection and facilitating reuse of the hemodialyzer 10.
- the hemodialyzer 10 is constructed by enclosing a number of hollow fiber dialysis membranes inside the tube body, almost in the same manner as the conventional one (see Fig. 12). And a dialysate system outside the hollow fiber. At both ends of the tube body are a blood inlet 11 A, a blood outlet 11 B, and a dialysate inlet 12 A. A dialysate outlet 12B is opened. In addition, blood tubes 14 forming a blood circuit are connected to the blood outflow ports 11A and 11B.
- the sanitizing filter unit 20 generally includes a filter case 21 and a switching valve 27 as an opening / closing means.
- the filter case 21 is divided into a first case tube 21A and a second case tube 21B, each of which contains a number of sterilization filters 25A and 25B.
- the sterilizing filters 25A and 25B are, for example, polyethylene hollow fiber membranes having a pore size of 0.015 micron.
- the first sterilization chamber (22AZ45A) in the first case tube 21A is divided into the inlet side and the outlet side by the sterilization filter 25A.
- An outlet 23A opens at one end communicating with the inside of the yarn, and an outlet 23B opens at the other end communicating with the outside of the hollow yarn.
- the second sterilization chamber 22B in the second case pipe 21B is similarly divided into a population transfer side and an exit side by a sterilization filter 25B.
- the outlet 24B is open at one end communicating with the inside of the hollow fiber, and the outlet 24A is open at the other end communicating with the outside of the hollow fiber.
- the sterilization filters 25A and 25B may be configured as a replaceable power-storage type as seen in a general water purifier.
- first case tube 21A and the second case tube 21B have the same configuration, and are opposite to each other, that is, the upper case in FIG. 1 is not the second case tube 21B but the first case tube 21B.
- a and the lower case may be the second case tube 21B instead of the first case tube 21A. This corresponds to a dialysis method for reversing the flow direction of the dialysate in the hemodialyzer 10.
- the outlet 23B of the first sterilization chamber 22A (first case tube 21A) is connected to the dialysate inlet 12A of the hemodialyzer 10 via the dialysate tube 13, and the second sterilization chamber is connected.
- 22 B (second case tube 21 B) inlet 24 A
- the dialysis fluid inlet 12 A of the hemodialyzer 10 is connected to the dialysis fluid inlet 12 A via the valve 13.
- the outlet 23 B and the inlet 24 A are close to each other and are partially overlapped to form a connecting part 26.
- the switching valve 27 made of plastic is provided in the middle of the connecting portion 26.
- the switching valve 27 allows the dialysate to flow into and out of the hemodialyzer 10 without allowing the outlet 23 B and the inlet 24 A forming the connecting part 26 to communicate with each other as shown in FIG. As shown in Fig. 5, it is possible to switch between the position during dialysis to be performed and the position during disinfection to prevent the inflow and outflow of the liquid (disinfectant for disinfection) to the hemodialyzer 10 side by communicating the middle part with each other as shown in Fig. 5. Things.
- the switching valve 27 is rotated by a handle 29 a in a cylindrical valve case 28 interposed between the outlet 23 B and the inlet 24 A in the middle thereof. It comprises a valve body 29 to be operated.
- the valve body 29 divides the inside of the valve case 28 in the diameter direction.
- valve body 29 when the valve body 29 is perpendicular to the connection portion 26, the inside of the valve case 28 is divided into two so as to cut off both the outlet 23B and the inlet 24A, and is divided into two.
- the outlet 23 B and the inlet 24 A are set so that they communicate with each other through one chamber of the valve case 28.
- the specific configuration of the opening / closing means is not limited to the illustrated switching valve 27, and may include another three-way cock / tap or the like.
- a delivery port 23 A forming a connection part 26 in advance is connected to a hemodialyzer through a dialysate tube 13.
- the inlet 24 A forming the connection part 26 is connected to the dialysate outlet 12 B of the hemodialyzer 10 via the dialysate tube 13.
- the switching valve 27 provided in the connection part 26 is switched to the dialysis position where the dialysate flows out to the hemodialyzer 10 as shown in FIG.
- dialysate tube 1 passes through the outlet port 23 B forming the connection part 26, and is divided into two parts by the valve body 29 shown in FIG. It is introduced via 3 into the dialysate inlet 12 A of the hemodialyzer 10.
- the dialysate flowing through the dialysate system in the hemodialyzer 10 in the opposite direction to the blood in the blood system exits from the dialysate outlet 12B, passes through the dialysate tube 13, and is shown in Fig. 4.
- the dialysate After passing through the flow path on one side in the valve case 28 divided into two by the valve body 29, it is sent as it is to the second sterilization chamber 22B through the population 24A. Then, the dialysate is formally filtered again with the sterilization filter 25B in the second sterilization chamber 22B, and then used from the outlet 24B of the second sterilization chamber 22B. It is discharged as spent waste liquid.
- the first and second sterilization chambers 22A and 22B in the filter case 21 and the hemodialyzer 10 When reversing the flow direction of the dialysate flowing into and out of the hemodialyzer 10, the first and second sterilization chambers 22A and 22B in the filter case 21 and the hemodialyzer 10 The relative positional relationship between the dialysate inlet 12A and the dialysate outlet 12B may be reversed from the above arrangement. In other words, this time, the second sterilization room 2
- the previous dialysate outlet 12B may be regarded as the dialysate inlet, and each may be reversed.
- a new eluate is supplied from the outlet 24 B (the inlet of the new first eradication chamber) of the previous second eradication chamber 22 B, and the dialysate that has been dialyzed is used in the previous operation.
- the filter case The dialysis solution flowing into and out of the hemodialyzer 10 is passed through the respective sterilization filters 25A and 25B of the first sterilization chamber 22A and the second sterilization chamber 22B in 21. Regardless of the flow direction, filtration can be performed to catch bacteria before time, and by supplying sterile dialysate to hemodialyzer 10 at all times, hemodialyzer 10 can be kept in an aseptic state. .
- the sterilization of the hemodialyzer 10 becomes unnecessary.
- the protein component of the blood coating the surface of the dialysis membrane in the hemodialyzer 10 is not transformed into a heterologous protein by the bactericide, and the biocompatibility is not impaired.
- the inlet of the first disinfecting chamber 22A and the outlet of the second disinfecting chamber 22B capture the bacterium in the dialysate and aseptically sterilize it. It is no longer in a state, and must be disinfected before it can be reused.
- the switching valve 27 provided at the connection part 26 is connected to the outlet 23 B side of the connection part 26 and an intermediate part on the side of the population 24 A as shown in FIG. May be connected to each other, and the disinfection position may be switched to a position at the time of disinfection for preventing the inflow and outflow of the liquid into the hemodialyzer 10.
- the agent When a sterilizing agent is supplied instead of the dialysate to the inlet 23A of the first sterilization room 22A, the agent mainly sterilizes the sterilization filter 25A of the first sterilization room 22A. Then, the middle of the inlet 23 A and the middle 24 A communicates with each other, and the medicine flows to the hemodialyzer 10 through one room in the valve case 28 of the switching valve 27.
- the sterilization filter 25B of the second sterilization chamber 22B is also sterilized and discharged from the outlet 24B.
- the medicine may be supplied in the opposite direction from the outlet 24B of the second sterilization chamber 22B.
- the drug flows into the hemodialyzer 10 as before. This eliminates the need for washing with sterile water in hemodialyzer 10, which removes the drug from the dialysis membrane, especially when reusing, thus reducing unnecessary time and labor when reusing. It becomes possible.
- FIG. 6 shows a modification of the above-described first embodiment.
- the sterilization filters 25A and 25B are configured in the opposite direction to the first embodiment so that the opening end group formed by potting the hollow fibers faces the connection portion 26.
- the inlet 23A opens at one end communicating with the outside of the hollow fiber, which is the sterilization filter 25A, and at the other end communicating with the hollow fiber.
- Outlet 23 B is open.
- a discharge port 24B opens at one end communicating with the outside of the hollow fiber of the sterilization filter 25B, and a discharge port 2 opens at the other end communicating with the hollow fiber. 4 A is open.
- the filter case 21 including the second sterilization chamber 22B divided into the side and the side can be configured in various modes. Further, the modified example shown in FIG. 6 shows a state in which the hemodialyzer 10 and the sterilization filter unit 20 are inverted with respect to those shown in FIG.
- the sterilizing filters 25A and 25B are not limited to polyethylene hollow fiber membranes, and may also be configured using a product in which a flat membrane type sterilizing filter is enclosed. .
- FIG. 7 shows a second embodiment of the present invention.
- the hemodialyzer 30 with a sterilization filter according to the present embodiment is one in which the sterilization filter unit 20a is integrated with the hemodialyzer 10a in advance.
- the first case tube 21A and the second case tube 21B, which constitute the disinfecting filter unit 20a, are integrally formed so as to extend in the longitudinal direction.
- 0a is formed integrally so as to communicate with the approximate center of -a, as shown in Fig. 7, the sterilization filter unit 20a is connected It is integrally formed with the compact so as to be substantially parallel to the hemodialyzer 10a via the part 26.
- a partition plate 15 On one inner wall on one side of the hemodialyzer 10a with which the connecting portion 26 communicates, there is provided a partition plate 15 extending in both ends, and the partition plate 15 and the inner wall of the hemodialyzer 10a are provided.
- the dialysate inflow passage 16A and the dialysate outflow passage 16B are separated from each other approximately at the center.
- the dialysate flowing out of the dialysate inflow channel 16A moves to the other end of the hemodialyzer 10a, passes through the dialysate outflow channel 16B, and is introduced again into the sterilization filter unit 20a. It is supposed to be. Note that the same parts as those in the first embodiment are denoted by the same reference numerals, and redundant description will be omitted.
- the sterilizing filter unit 20a is previously configured integrally with the hemodialyzer 10a, it is possible to make the filter compact, and it is possible to reduce the time and effort for assembling and to facilitate the handling. is there.
- the specific shape of the hemodialyzer 10 a â the sterilizing filter unit 20 a is not limited to the illustrated one.
- the sterilizing filter unit 20 shown in FIG. You may comprise so that it may combine integrally with a.
- the sterilization filter unit 40 is of an assembling type and is configured so that a user can easily replace the filter.
- the disc-shaped filter case 41 which is the main part of the sanitizing filter unit 40, has a flat intermediate substrate 42, and flat membrane-type sanitizing filters 46A and 46B interposed on the front and back surfaces, respectively.
- a pair of clamping plates 50 A and 50 B are provided, the peripheral edges of which are in close contact with the intermediate substrate 42.
- the pair of holding plates 50A and 50B are detachably attached to the intermediate substrate 42.
- the intermediate substrate 42 has recesses 44A and 44B that form the first sterilization chamber 45A or the second sterilization chamber 45B, respectively, on the middle side from the peripheral edge 43 on the front and back surfaces. hand
- a connection portion 47 is formed at one end of the intermediate substrate 42 so as to communicate with the hemodialyzer 10 described above. Screw holes 43a, 43a, ... for assembling a pair of clamping plates 5OA, 50B, which will be described later, are provided at appropriate places on the peripheral edge 43.
- the inner surface of each of the recesses 44A, 44B is formed with a wavy groove for creating a gap between the flat membrane type sterilizing filters 46A, 46B when the filters are inserted. I have.
- connection part 47 communicates with a delivery port 48 A communicating with the first sterilization chamber 45 A composed of the concave part 44 A and a second sterilization chamber 45 B composed of the concave part 44 B.
- the inlets 48B are formed close to each other.
- the outlet 48 A is a portion which is connected to the dialysate inlet 12 A of the hemodialyzer 10 shown in FIG. 1, and one outlet 48 B is connected to the hemodialyzer 10. This is a part that communicates with the dialysate outlet 1 2 B.
- a switching valve 49 as an opening / closing means is provided at the connection part 47. This will be described later.
- the pair of holding plates 5OA and 50B are the same member, and the holding plate 5OA will be described as a representative.
- the holding plate 50A is formed in a disk shape, and a fitting portion 52A corresponding to the concave portion 44A of the intermediate board 42 is provided inside the flange portion 51A forming the peripheral edge. Provided.
- the end face of the fitting portion 52A is formed as a wavy groove that creates a gap between the filter and the filter when the filter comes into contact with the flat membrane type sterilization filter 46A.
- a delivery port 53A for supplying a dialysate or the like is formed substantially at the center of the holding plate 5OA.
- An outlet 53B for discharging used dialysate and the like is formed substantially at the center of the holding plate 50B.
- the holding plate 5 O A is inserted into the intermediate board 4 so that the fitting portion 52 A enters the recess 44 A.
- a flat space surrounded by the concave portion 44A and the fitting portion 52A is the first sterilization chamber 45A.
- a flat space surrounded by the concave portion 44B and the fitting portion 52B is a second sterilization chamber 45B.
- Each sterilization room 4 Each of 5 A and 45 B is provided with a sterilizing filter 46 A and 46 B, respectively.
- the peripheral end of each of the sterilizing filters 46 A and 46 B has a concave portion 4 4 A, 44B and fitting portions 52A, 52B are closely fitted between the respective peripheral edges.
- the first sterilization chamber 45A and the second sterilization chamber 45B are divided into a dialysate inlet and an outlet, respectively, by such sterilizing filters 46A and 46B. I have.
- the switching valve 49 provided in the connection part 47 connects the dialysate to the blood analyzer without connecting the outlets 48 A and the inlets 48 B in the middle part as shown in FIG. 9. As shown in Fig. 11 and the disinfection position where fluid (sterilizing agent) is prevented from flowing into and out of the hemodialyzer. It is something.
- the switching valve 49 functions similarly to the switching valve 27 of the first embodiment. More specifically, the switching valve 49 is a substantially columnar member, and is rotatably inserted into the connecting portion 47 so as to cut off a partway between the outlet 48 A and the inlet 48 B.
- a handle 49d for rotating operation is provided, and in the middle part, a communicating port 48A and a communicating port 48B, which communicate separately, respectively.
- Holes 49a and 49b, and a cutout 49c that communicates the outlet 48A and the inlet 48B with each other are provided.
- the switching valve 49 When the switching valve 49 is set to the dialysis position as shown in FIGS. 8 and 9, the outlet 48 A and the inlet 48 B communicate with each other through the through holes 49 a and 49 b, respectively. When the disinfection position is set as shown in FIG. 11, the outlet 48A and the inlet 48B are set to communicate with each other through the notch 49c.
- the specific configuration of the opening / closing means is not limited to the illustrated switching valve 49, and may be configured by another three-way cock / stopper or the like. Next, the operation of the third embodiment will be described.
- FIG. (1) Sterilization room 45 When a new dialysate is supplied to the inlet (48 A) of 48 A, the dialysate is first filtered through the sterilization filter (45 A) and then sterilized in the first sterilization room (45 A) Pass through the lower side of the filter 46 A, through the through hole 49 a of the switching valve 49, and out the outlet 4
- the used dialysate is led to the inlet port 48B, passes through the through hole 49b of the switching valve 49, and passes as it is to the upper side of the sterilization filter 46B in the second sterilization chamber 45B. Sent. Then, after the dialysate is formally filtered again by the sterilization filter 46B, the dialysate is discharged from the outlet 53B of the second sterilization chamber 45B as used waste liquid.
- the flow direction of the dialysate in the filter case 41 may be reversed.
- the disinfecting agent is supplied to the inlet 53A of the first disinfecting chamber 45A in FIG. 4 5 A sanitizing filter 1 4 6 A is sterilized, and then a switching valve 4 9 that connects the outlet 4 8 A and the inlet 4 8 B halfway is cut out 4 9
- the drug does not flow to the hemodialyzer side via 9c but flows to the second sterilization chamber 45B as it is, and the sterilization filter 46B in the second sterilization chamber 45B is also sterilized. Discharged from outlet 5 3 B.
- the medicine may be supplied in the opposite direction from the outlet 53B of the second sterilization chamber 45B.
- the user can easily disassemble the filter case 41 and use a dirty or old flat membrane sanitizing filter that cannot be reused anymore.
- a and 46B can be easily taken out, and only the filters 46A and 46B need to be replaced, whereby the case 40 itself can be used repeatedly and permanently.
- the outlet 48 A and the inlet pipe 48 B of the connecting portion 47 are connected in advance integrally to, for example, a hemodialyzer 10 a shown in FIG. It may be configured as a hemodialyzer with an attachment.
- a disinfection position for preventing a liquid from flowing into the hemodialyzer side is provided at a connection portion that connects the outlet of the filter case and the dialysate inlet of the hemodialyzer to each other. It is also possible to provide an opening / closing means that can be switched between a dialysis position where the dialysate flows into the vessel and a sterilization filter unit. Further, the sterilizing filter unit may be configured in advance with a hemodialyzer to form a hemodialyzer with a sterilizing filter.
- the dialysis is performed in the sterilization filter tubs 20 and 40 according to the first and third embodiments and the hemodialyzer 30 with a sterilization filter according to the second embodiment.
- the sterilization filters 25 B and 46 B are removed from the second sterilization chambers 22 B and 45 B communicating with the liquid outlets 12 B, and the configuration can be further simplified. However, this does not assume a new method of reversing the blood and dialysate flow during treatment.
- the sterilization filter unit which concerns on this invention, the bacterial contamination of this hemodialyzer can be prevented reliably regardless of the flow direction of a dialysate to a hemodialyzer.
- the complicated work of directly disinfecting and disinfecting and removing the chemical can be omitted, and it is easy to use and the cost can be reduced.
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Description
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Claims
1 . è¡æ¶²éæåšãç¡èç¶æ
ã«ä¿ã€ã®ã«äœ¿çšããé€èãã£ã«ã¿ãŒã¥ãã å㧠ãã£ãŠã é€èãã£ã«ã¿ãŒã«ããéå
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è¡æ¶²éæåšã®éæ液æµå
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¥ãã ãéææäœçœ®ãšã«åæ¿å¯èœãªééæ段ãèšããããšãç¹åŸŽãšããè¡æ¶²éæ åšçšã®é€èãã£ã«ã¿äžã¥ãã ãã
2 . åèšãã£ã«ã¿äžã±ãŒã¹ã¯ã ããããæ°å€ã®äžç©ºç³žåé€èãã£ã«ã¿ãŒã å°å
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1èš èŒã®è¡æ¶²éæåšçšã®é€èãã£ã«ã¿ãŒã¥ãã ãã
3 . åèšãã£ã«ã¿ãŒã±ãŒã¹ã¯ã æå¹³ãªäžéåºæ¿ãšã ãã®è¡šè£é¢ã«ãããã å¹³èåé€èãã£ã«ã¿ãŒãä»åšãããç¶æ
ã§åšç«¯çžãäžéåºæ¿åŽã«å¯çãã ããçè±èªåšã«çµä»ããäžå¯Ÿã®æŸææ¿ãšããæãã
åèšäžéåºæ¿è¡šé¢ãšäžæŸææ¿å
é¢ãšã®ååšç«¯çžäžåŽã«ã ãã®éã«æŸæã ããäžå¹³èåé€èãã£ã«ã¿ãŒã«ããéæ液ã®éå
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é¢ ãšã®ååšç«¯çžäžåŽã«ã ãã®éã«æŸæãããä»å¹³èåé€èãã£ã«ã¿ãŒã«ãã éæ液ã®éå
¥å£åŽãšéåºå£åŽãšã«åºåãããåèšç¬¬ 2é€è宀ã圢æãã åèšäžæŸææ¿ã«ç¬¬ 1é€è宀ã«é£éããéå
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眮ããäžæ¹ã åèšä»æŸ ææ¿ã«ç¬¬ 2é€è宀ã«é£éããéåºå£ãé
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¥ å£ã«é£éãããéåºå£ãšã 第 2é€è宀ã«é£éãè¡æ¶²éæåšã®éæ液æµåºå£ ã«é£éãããéå
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4 . è«æ±é
1ïŒ 2ãŸã㯠3èšèŒã®é€èãã£ã«ã¿ãŒãŠãã ããã äºãè¡æ¶²é æåšãšäžäœãšããŠæ§æããããšãç¹åŸŽãšããé€èãã£ã«ã¿ãŒä»è¡æ¶²éæåš
5 . è¡æ¶²éæåšãç¡èç¶æ
ã«ä¿ã€ã®ã«äœ¿çšããé€èãã£ã«ã¿äžã¥ãã å㧠ãã£ãŠã é€èãã£ã«ã¿ãŒã«ããéå
¥å£åŽãšéåºå£åŽãšã«åºåããããã£ã« ã¿ãŒã±ãŒã¹ãåãã
åèšãã£ã«ã¿ãŒã±ãŒã¹ã®éåºå£ãšè¡æ¶²éæåšã®éæ液æµå
¥å£ãšãäºãã« é£éãããæ¥ç¶éšã«ã åèšè¡æ¶²éæåšåŽãžã®æ¶²äœã®æµå
¥ãé»æ¢ããæ¶æ¯æ äœçœ®ãšã åèšè¡æ¶²éæåšåŽãžéæ液ãæµå
¥ãããéææäœçœ®ãšã«åæ¿å¯èœ ãªééæ段ãèšããããšãç¹åŸŽãšããè¡æ¶²éæåšçšã®é€èãã£ã«ã¿ãŒã¥ã ã å o
6 . è«æ±é
5èšèŒã®é€èãã£ã«ã¿ãŒã¥ãã ããã äºãè¡æ¶²éæåšãšäžäœãš ããŠæ§æããããšãç¹åŸŽãšããé€èãã£ã«ã¿äžä»è¡æ¶²éæåšã
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP1997/001548 WO1998050090A1 (fr) | 1997-05-08 | 1997-05-08 | Unite de filtrage pour eliminer les bacteries dans un rein artificiel, et rein artificiel avec filtre d'elimination de bacteries |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP1997/001548 WO1998050090A1 (fr) | 1997-05-08 | 1997-05-08 | Unite de filtrage pour eliminer les bacteries dans un rein artificiel, et rein artificiel avec filtre d'elimination de bacteries |
Publications (1)
Publication Number | Publication Date |
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WO1998050090A1 true WO1998050090A1 (fr) | 1998-11-12 |
Family
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PCT/JP1997/001548 WO1998050090A1 (fr) | 1997-05-08 | 1997-05-08 | Unite de filtrage pour eliminer les bacteries dans un rein artificiel, et rein artificiel avec filtre d'elimination de bacteries |
Country Status (1)
Country | Link |
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WO (1) | WO1998050090A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US6315895B1 (en) | 1999-12-30 | 2001-11-13 | Nephros, Inc. | Dual-stage hemodiafiltration cartridge |
US6406631B1 (en) | 1999-07-30 | 2002-06-18 | Nephros, Inc. | Two stage diafiltration method and apparatus |
US6635179B1 (en) | 1999-12-30 | 2003-10-21 | Nephros, Inc. | Sterile fluid filtration cartridge and method for using same |
US6716356B2 (en) | 2000-01-11 | 2004-04-06 | Nephros, Inc. | Thermally enhanced dialysis/diafiltration system |
US6719907B2 (en) | 2000-10-30 | 2004-04-13 | Nephros, Inc. | Dual-stage filtration cartridge |
EP2136900A1 (en) * | 2007-02-16 | 2009-12-30 | Nephros, Inc. | Compact fluid purification device with manual pumping mechanism |
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JPS63154181A (ja) * | 1986-12-08 | 1988-06-27 | ãã¬ã»ããŠã¹ãã¢ã¯ããšã³ã²ãŒã«ã·ã£ãã | é€èè£ çœ®ä»è¡æ¶²éæè£ çœ® |
JPH08187284A (ja) * | 1995-01-11 | 1996-07-23 | Masahiro Ozaki | è¡æ¶²æµåè£ çœ® |
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JPS63154181A (ja) * | 1986-12-08 | 1988-06-27 | ãã¬ã»ããŠã¹ãã¢ã¯ããšã³ã²ãŒã«ã·ã£ãã | é€èè£ çœ®ä»è¡æ¶²éæè£ çœ® |
JPH08187284A (ja) * | 1995-01-11 | 1996-07-23 | Masahiro Ozaki | è¡æ¶²æµåè£ çœ® |
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US6406631B1 (en) | 1999-07-30 | 2002-06-18 | Nephros, Inc. | Two stage diafiltration method and apparatus |
US6315895B1 (en) | 1999-12-30 | 2001-11-13 | Nephros, Inc. | Dual-stage hemodiafiltration cartridge |
US6635179B1 (en) | 1999-12-30 | 2003-10-21 | Nephros, Inc. | Sterile fluid filtration cartridge and method for using same |
US6716356B2 (en) | 2000-01-11 | 2004-04-06 | Nephros, Inc. | Thermally enhanced dialysis/diafiltration system |
US6719907B2 (en) | 2000-10-30 | 2004-04-13 | Nephros, Inc. | Dual-stage filtration cartridge |
EP2136900A1 (en) * | 2007-02-16 | 2009-12-30 | Nephros, Inc. | Compact fluid purification device with manual pumping mechanism |
EP2136900A4 (en) * | 2007-02-16 | 2012-05-30 | Nephros Inc | COMPACT FLUID CLEANING DEVICE WITH MANUAL PUMP MECHANISM |
US8281937B2 (en) | 2007-02-16 | 2012-10-09 | Nephros, Inc. | Compact fluid purification device with manual pumping mechanism |
US8640882B2 (en) | 2007-02-16 | 2014-02-04 | Nephros, Inc. | Compact fluid purification device with manual pumping mechanism |
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