JP2015096191A - Connection mechanism for fluid processing devices, fluid processing system using the same, and operation method of fluid processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection mechanism, a fluid processing system using the same, and an operation method of fluid processing devices, which can sanitarily connect in a desired state by an extremely simple operation when connecting the fluid processing devices.SOLUTION: In a connection mechanism for fluid processing devices, a fluid processing system using the same, and an operation method of the fluid processing devices, a connection mechanism communicates a first fluid processing device having a connector and a second fluid processing device having a penetrated wall part through penetration of the penetrated wall part by the connector. The connector has: an axial tip part capable of piercing the penetrated wall part by push-in of the connector to the penetrated wall part; and a cut-open part branching from the tip part into a plurality of ridge-shaped parts, extending in a connector shaft direction, and comprising cutting edge parts, which can tear the penetrated wall part by further push-in, at a connector radial tip part of each ridge-shaped part. At a radial center part of the connector, a channel capable of communicating both fluid processing devices is formed.

Description

  The present invention relates to a connection mechanism suitable for a medical fluid treatment apparatus, a fluid treatment system using the connection mechanism, and a method for operating the fluid treatment apparatus.

  In various fields, a fluid processing apparatus having a certain function and a fluid processing apparatus having another function may be connected to constitute a target fluid processing system. In this case, in order to satisfy the functions of the entire fluid treatment system without impairing the functions of the individual fluid treatment apparatuses, the connection mechanism provided between the two fluid treatment apparatuses is specially devised and improved in accordance with the field. May be required.

  For example, in the field of medical fluid processing systems, a first fluid processing device is connected to a medical module as a second fluid processing device, and fluid is passed through the medical module to perform fluid processing. There is. This is to perform a desired process by connecting an appropriate module according to the liquid to be processed and the purpose of the process to the first fluid processing apparatus. In particular, a wide range of liquids such as body fluids, blood, chemicals, and water can be used. Used in medical applications to process.

  Examples of the medical module as described above include medical devices used for extracorporeal circulation treatment of bodily fluids typified by blood and plasma, such as artificial kidneys, blood filtration dialyzer, blood filter, plasma component separator, plasma Separators, leukocyte removers, blood component adsorbers, etc., and modules for the treatment of liquids that are widely used for medical purposes, such as filtration filters for dialysate, etc. The inside is filled with a functional material such as a hollow fiber or an adsorbent, and the case has one or more fluid ports for liquid passage. In particular, an endotoxin capture filter (ETRF) module is used in connection with a dialysis machine to filter and remove toxins called endotoxins contained in dialysate. A port is provided, and a functional material such as a hollow fiber or an adsorbent is filled inside the container.

  In such an endotoxin removal process, the dialysate flows through the ETRF module and is sent to the dialyzer via the fluid port. In order to prevent contamination, the connection mechanism between the dialysis apparatus and the ETRF module is required to connect the dialysis apparatus-side connector and the ETRF module-side fluid port in a fluid-tight manner without causing leakage. Also, since it is used for medical purposes, it must be used in a sanitary manner. When connecting the ETRF module to a dialysis machine, the fluid port on the ETRF module side or the connector on the dialysis machine side may be touched by hand or the fluid port. The connection operation is performed with great care so that unnecessary bacteria are not propagated by being exposed to the air for a long time. Furthermore, when the liquid is filled in the ETRF module in advance, a plug may be detachably attached to the fluid port so that the fluid does not leak from the fluid port. For this reason, the plug body is removed and connected to the dialysis apparatus while taking care not to touch the fluid port and to prevent the filling liquid from leaking and contaminating the surroundings.

  The ETRF module is replaced after it has been used for a certain period of time. However, it has been a burden of replacement work to pay attention to the above-mentioned attention every time it is replaced.

  Therefore, for example, as described in Patent Document 1 and Patent Document 2, a method of connecting a medical module with a simple operation without touching the fluid port with a hand has been proposed. However, in the above connection method, since it is necessary to connect the fluid port of the ETRF module in an open state, when the liquid is filled in the module in advance, the liquid leaks from the fluid port. In addition to being unable to prevent, the exposed fluid port may lead to unexpected contamination by bacteria.

  Further, in Patent Document 3, regarding a connection method between a fluid port of a module and a connection tool on the fluid processing apparatus side, the connection tool passes through an internal cap in a plug provided in the fluid port and is inserted into the inside. The method is described. However, when connecting the connector, it is still necessary to remove the protective cap and expose the inner cap. Since the plug removal work is necessary in this way, the simplification of the connection operation becomes incomplete, and the inside of the connection part is exposed during the connection operation. There is no wiping out the risk of touching exposed parts or coming into contact with air, leading to the growth of unwanted bacteria.

  Further, Patent Document 4 discloses a connection mechanism that allows a thick plug provided on the module side to pass through with a needle-like connector provided on the fluid processing apparatus side. However, with this mechanism, the thickness of the lid portion of the plug that is penetrated by the needle-like connector is thick, and the thickness of the lid is used to seal the connector, but the thickness is large. In order to penetrate the lid part, it is necessary to reduce the diameter of the needle-like connector, which may not ensure a sufficient flow rate of the processing liquid flowing through the connector, or may reduce the flow resistance of this part. It becomes a factor to increase unnecessarily.

JP 2003-320025 A Japanese Patent Laid-Open No. 11-70164 Japanese Patent No. 4196994 JP 2005-102782 A

  Therefore, in view of the prior art as described above, the object of the present invention is to connect hygienically in a desired state with a very simple operation without special consideration when connecting two fluid treatment devices. In addition, even when any fluid processing device is filled with liquid, it is possible to connect reliably without leaking the filling liquid, and the liquid can be reliably sealed when the processing liquid is distributed. In addition, a connection mechanism suitable for connection between fluid treatment apparatuses for medical use, etc., which does not unnecessarily increase the flow path resistance at the connection portion, and a fluid treatment system and a fluid treatment apparatus using the connection mechanism It is to provide an operating method.

In order to solve the above-described problem, a connection mechanism for a fluid processing apparatus according to the present invention includes a first fluid processing apparatus having a connection tool and a second fluid processing apparatus having a through-wall portion by the connection tool. A connection mechanism that communicates through the through-wall portion,
The connecting tool branches into a sharp axial tip that can pierce the through wall by pushing the connecting into the through wall, and a plurality of ridges from the axial tip. An incision having a cutting edge that extends in the axial direction of the connection tool, and that can cut the through-wall portion by further pushing the connection tool into the through-wall wall at the distal end of the connection tool in the radial direction Have
A flow path capable of communicating the first fluid treatment device and the second fluid treatment device in a state where the connection tool penetrates the through-wall portion is formed in a central portion in the radial direction of the connection tool. It consists of what is characterized by this.

  In such a fluid processing device connection mechanism according to the present invention, the connection device on the first fluid processing device side is penetrated by the through-wall portion on the second fluid processing device side, so that the fluid processing device is connected between the fluid processing devices. Is communicated. In the connection operation, the distal end of the connecting tool in the axial direction is pushed into the through-wall part by being pushed into the through-wall part, and the connecting tool is further pushed in, thereby connecting each ridge-shaped part at the incision part. The wall to be penetrated is torn by the cutting edge formed at the distal end in the radial direction. That is, it is possible to connect the fluid processing apparatuses to each other only by an extremely simple operation of piercing the connecting tool through the wall to be penetrated and pushing for penetration. In this connection operation, it is not necessary to remove the plug body as in the conventional method, and it is possible to avoid exposure of the inside of the connection portion. Therefore, it is possible to make a sanitary connection with an extremely simple operation. In addition, a flow path of an appropriate size capable of communicating between both fluid treatment devices in a state where the connection tool penetrates the through-wall portion is formed in the central portion in the radial direction of the connection tool. As in the case of connection using a connecting tool, it is possible to avoid an unnecessarily increase in flow path resistance at the connection portion, ensuring a desired and sufficient flow rate, and easily achieving a predetermined performance of the fluid processing apparatus. Can be demonstrated.

  In the connection mechanism for a fluid treatment device according to the present invention, in a cross section in a direction crossing the connection tool with respect to the axial direction, a shape connecting each blade edge portion of the incision portion is a triangle, a quadrangle, a pentagon, a hexagon. It is preferable to form in any of these. By forming in such a cross-sectional shape, the connecting tool is pushed into the through-wall portion, and the through-wall portion is cut by the blade edge portion formed at the distal end portion of each ridge-shaped portion in the incision portion. In this case, the through-wall portion is torn very smoothly during the process, and the desired penetration of the through-wall portion is more easily performed.

  The cutting edge angle of the cutting edge portion formed at the distal end portion in the connecting tool radial direction of each of the ridge-shaped portions is preferably in the range of 10 to 70 degrees, and more preferably in the range of 20 to 60 degrees. By setting such a blade edge angle, it is possible to cut the through wall portion smoothly and ensure the strength and rigidity required for the blade edge portion.

  Moreover, it is preferable to employ a configuration in which the connecting tool radial direction dimension of the cutting edge portion in the incision portion is gradually increased in the connecting tool axial direction and in the direction away from the axial tip portion. By adopting such a configuration, the through-wall part will always be gradually torn along with the pushing-in of the connection tool, and further smoothing of the to-be-cut wall part will be possible more reliably. become. This increase in radial dimension may be in the form of either a straight line or a gentle curve. Moreover, it is preferable that the front-end | tip of a connection tool is sharp, and when the front-end | tip angle which expressed the increase of the radial direction dimension of the connection tool in angle is 5 degrees-22.5 degrees from the center axis | shaft of a connection tool, Since it is possible to reduce the resistance at the time of being pushed in, it is more preferable that it is 12.5 degrees or more because the strength of the distal end portion of the connector can be secured. Here, the angle from the central axis is an angle between a line segment connecting the tip and the end of the blade edge part and the central axis of the connector. In the example of FIG. 2 described later, the terminal end of the blade edge portion is an intersection of the blade edge portion and the seal portion.

  Moreover, it is preferable that the flow path formed in the radial direction center part of the said connector is formed in the direction parallel to a connector axial direction. If comprised in this way, when manufacturing a connector, for example by injection molding, the metal mold | die for connection tool shaping | molding can be divided | segmented into the direction parallel to the axial direction of a connector, and, thereby, a metal mold | die. The structure can be simplified and the molding can be facilitated.

  Moreover, the space which can accommodate the torn piece part of the said to-be-through-wall part cut | disconnected by the said blade edge part is formed between the ridge shape parts adjacent to a connector peripheral direction among said several ridge shape parts. Is preferred. If comprised in this way, the torn piece part of a to-be-through wall part will be smoothly accommodated in a predetermined place, the torn piece part will obstruct | occlude, and it will prevent that the resistance at the time of a connection tool being pushed in increases. Is possible.

  In addition, the connection tool is disposed between the connection tool and the second fluid treatment device in which the through-wall portion is penetrated at a position opposite to the axial tip portion with respect to the incision. It is preferable to have a seal portion capable of liquid-tight sealing. By having such a seal portion, the communication path between the two fluid treatment devices formed by pushing the connector is more reliably sealed to the outside.

  Moreover, the said through-wall part can be provided in the said 2nd fluid processing apparatus with arbitrary appropriate forms, for example, a part of 2nd fluid processing apparatus is used as a through-wall part, and it is 2nd fluid processing. The plug body can be configured integrally with the apparatus, or is detachably attached to the second fluid treatment apparatus (for example, detachably attached to a fluid port provided in the second fluid treatment apparatus). It can also be formed as a part of. In this way, if the through-wall portion is formed as a part of the plug body, the user decides whether to use the through-wall portion in the present invention or to use it without using it. It becomes possible to select arbitrarily.

  In addition, the wall to be penetrated may be any wall having any structure or shape as long as it can be pierced and penetrated by a connecting tool. Alternatively, a groove for facilitating the tearing of the through-wall portion by the incision portion may be provided. For example, grooves extending radially from the pierced portion by the axial tip portion of the connector may be engraved. If such a groove is engraved, it becomes possible to further facilitate the tearing of the through-wall portion by the incision portion.

  Such a connection mechanism for a fluid processing apparatus according to the present invention can be applied to any fluid processing apparatus that requires easy connection operation. In particular, it is suitable for a medical fluid treatment apparatus that requires a sanitary connection operation and is required to prevent unexpected growth of bacteria. For example, it is suitable when at least one of the first fluid treatment device and the second fluid treatment device is a medical fluid separation device.

  In particular, when the second fluid treatment device is an endotoxin capture filter module and the first fluid treatment device is a hemodialysis device or a blood purification device, the connection mechanism for a fluid treatment device according to the present invention is particularly effective. It is.

  The present invention includes a first fluid treatment device and a second fluid treatment device, and a fluid treatment device connection mechanism as described above, and the first fluid treatment device and the first fluid treatment device via the connection mechanism. A fluid processing system is also provided in which the two fluid processing devices are in fluid-tight communication. The present invention is particularly effective when the fluid treatment system is a medical system.

  Further, according to the present invention, after the first fluid treatment device and the second fluid treatment device are in fluid-tight communication with each other via the fluid treatment device connection mechanism as described above, the first fluid treatment device and the first fluid treatment device are connected. The present invention also provides a method for operating a fluid processing apparatus, characterized by operating two fluid processing apparatuses. In such a fluid processing apparatus operating method, the predetermined connection between the two fluid processing apparatuses can be completed very simply and hygienically, especially when applied to the connection in a medical system and the start of operation after the connection. It is possible to simplify the work and significantly reduce the work load.

  As described above, according to the present invention, when connecting two fluid processing apparatuses, a desired state can be obtained by a very simple operation of piercing and tearing a wall to be penetrated by a connector without special consideration. Both fluid treatment devices can be connected with each other, greatly simplifying the connection operation, and preventing sanitary bacterial growth associated with the connection operation, allowing easy hygienic connection. become.

  According to a preferred aspect of the present invention, even when any of the fluid processing apparatuses is filled with a liquid, the connection operation can be performed while the connection portion is substantially automatically sealed. As a result, the filling liquid can be reliably connected without leaking, and the liquid can be reliably sealed when the processing liquid is distributed.

  Furthermore, as shown in the prior art, when using a needle-like connector, it is necessary to reduce the radial dimension in consideration of the piercing property of the connector, but in the present invention, Since a flow path of an appropriate size can be formed inside, after the predetermined connection operation is completed, it is possible to prevent the flow resistance from being increased unnecessarily at the connection portion, and to provide a necessary and sufficient flow rate. It can be secured easily.

  Therefore, in particular, when the present invention is applied to a medical fluid processing apparatus or fluid processing system, a sanitary connection can be easily performed with an extremely simple operation, and a desired flow rate is secured at the connection portion. The predetermined function of the processing apparatus can be surely exhibited.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram of the connection mechanism for fluid processing apparatuses which concerns on one embodiment of this invention, and the fluid processing system using the same, (A) is the state before the connection by a connection mechanism, (B) is the state after a connection, respectively. Show. 1A and 1B show a connector in FIG. 1, in which FIG. 1A is a perspective view, FIG. 1B is an exploded perspective view, FIG. 1C is a side view, and FIG. FIG. 4 is a half cross-sectional view of an ETRF module according to an example of a second fluid processing apparatus in FIG. 1. It is an expansion perspective view of the fluid port part of the ETRF module of FIG.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1A shows a fluid processing system according to an embodiment of the present invention, and in particular, a fluid processing apparatus connection mechanism used in the fluid processing system. A fluid treatment system 1 shown in FIG. 1A includes a first fluid treatment device 2 and a second fluid treatment device 3, and includes a first fluid treatment device 2 having a connector 4 and a through-wall portion. As shown in FIG. 1 (B), the two fluid treatment devices 2, 3 are connected by a connection mechanism 6 that communicates the second fluid treatment device 3 having 5 with the connection tool 4 through the penetration wall 5. Are to be connected. In this embodiment, the fluid treatment system 1 is a medical fluid treatment system, the first fluid treatment device 2 is a hemodialysis device or a blood purification device, and the second fluid treatment device 3 is an endotoxin capture filter (ETRF). ) It consists of modules. The through-wall portion 5 is formed as a part of a plug 8 that is detachably attached to the fluid port 7 of the ETRF module serving as the second fluid processing device 3.

  The connector 4 provided on the first fluid processing device 2 side is made of, for example, a synthetic resin or metal, and a hard plastic such as modified polyphenylene ether or stainless steel is preferably used as a material for a hygienic and reliable connection. It is done. Although the manufacturing method of a connection tool is not prescribed | regulated, in the case of cutting or a synthetic resin, it can manufacture by injection molding. Injection molding is preferably used because a large amount of product can be manufactured at low cost.

  As shown in detail in FIG. 2 in addition to FIG. 1, the connection tool 4 has a sharp tip that can pierce the through-wall part 5 by pushing the connection tool 4 into the through-wall part 5. An axial tip 11 and a plurality of ridge-shaped portions 12 branched from the axial tip 11 and extend in the connecting tool axial direction, and the through-wall of the connecting tool 4 at the connecting tool radial tip of each ridge-shaped portion 12 And an incision 14 having a cutting edge 13 capable of tearing the through-wall portion 5 by further pushing into the portion 5. Further, at the central portion in the radial direction of the connector 4, a flow path 15 capable of communicating the first fluid treatment device 2 and the second fluid treatment device 3 with the connector 4 penetrating the through-wall portion 5. Is formed.

  The design of the flow channel inside the connector is not particularly limited, but the connector can be formed by injection molding by designing the channel to be formed in a direction parallel to the axial direction of the connector. When manufacturing, the mold for forming the connector can be divided in a direction parallel to the axial direction of the connector. Here, with respect to the parallel direction, the direction of the flow path and the axial direction of the connection tool are completely equal from the viewpoint that the mold may be divided into a direction parallel to the axial direction of the connection tool. It is not necessarily required to do this, but a substantially parallel relationship may be used. However, the deviation of the direction of the flow channel from the axial direction of the connector is preferably in the range of ± 10 degrees. This simplifies the mold structure and facilitates molding, which is preferable. Further, the flow paths do not necessarily have to be in a straight line, in other words, the shape is not limited to a shape in which the fluid flows “only” in a direction parallel to the axial direction. The shape will be described in detail. First, when molding the connector, the molding die is composed of a mold that slides in the direction of the connector tip and a mold that slides in the direction opposite to the tip of the connector (mold). A and mold B.), the flow paths (referred to as flow path A and flow path B) in the respective portions are formed by the slides of both molds. A series of flow paths are formed by the passage of the flow paths A and B, but the above-mentioned "flow paths are not in a straight line" is the flow path in the mold A and the mold B It can be formed by arranging the formation positions slightly offset from each other. That is, the flow path has a shape that is bent at a portion where the flow path A and the flow path B face each other. On the other hand, for example, in the case of a needle-like connector that has been widely used in the past, it is known that a hole for allowing liquid to pass through opens in a direction perpendicular to the axial direction. In the case of manufacturing by molding, a mold for making a hole requires a mechanism that slides in a direction perpendicular to the axial direction. This is not preferable because it complicates the mold structure.

  In the embodiment in which the flow path is formed in a direction parallel to the axial direction of the connection tool, in the example shown in FIG. 2A, the flow path 15 is formed near the center of the connection tool up to the middle of the connection tool 4 in the axial direction. Then, on the distal end side of the connection tool, it is conceivable to branch into a plurality of flow paths parallel to the axial direction according to the number of incisions 14. In this aspect, the strength in the direction of the distal end of the connector is not impaired, the cross-sectional area of the flow path is ensured, and the fluid is smoothly circulated.

  In the present embodiment, the incision 14 and each ridge-shaped part are formed so that the shape connecting the respective blade tips 13 of the incision 14 is a triangle in the cross section in the direction transverse to the axial direction of the connector 4. 12 is formed. As described above, this cross-sectional shape can be formed in any of a square, a pentagon, and a hexagon as well as a triangle. The blade edge angle of each blade edge portion 13 is in the range of 10 to 70 degrees in order to achieve both the smooth tearing of the wall 5 to be penetrated by the blade edge portion 13 and ensuring the strength and rigidity necessary for the blade edge portion 13. It is preferable that it is in the range of 20 to 60 degrees.

  Moreover, in this embodiment, the connecting tool radial direction dimension of the position of the blade edge | tip part 13 in the said incision part 14 is gradually large in the direction away from the said axial direction front-end | tip part 11 in a connecting tool axial direction. The portion in which the dimension in the connector radial direction at the position of the blade edge portion 13 gradually increases does not need to cover the entire axial region of the incision portion 14, and at least a certain axial length following the axial tip portion 11. The part should just have such a shape. Since the dimension in the connecting tool radial direction at the position of the blade edge part 13 is gradually increased, the through-wall part 5 is more easily torn by the pushing operation of the connecting tool 4.

  The dimension in the connector radial direction is not particularly limited, and may be appropriately designed so that unnecessary fluid pressure loss does not occur in the connector part.

  Further, the increase in the dimension of the connecting tool radial direction at the position of the cutting edge portion 13 may be either a linear or a gradual curve increasing form, and as described above, the tip of the cutting edge section 13 of the connecting tool 4 and When the angle between the line segment connecting the end and the central axis of the connector 4 is in the range of 5 degrees to 22.5 degrees, it is possible to reduce the resistance when the connector 4 is pushed. It is preferable, and more preferably in the range of 12.5 degrees to 22.5 degrees, it is further preferable because the strength of the tip of the connector can be secured.

  Further, in the present embodiment, among the plurality of (three in the present embodiment) ridge-shaped portions 12 described above, the to-be-pierced portion cut by the blade edge portion 13 between the ridge-shaped portions 12 adjacent to each other in the connecting tool circumferential direction. A space 16 that can accommodate the cut piece portion of the wall portion 5 is formed, and the cut piece portion is efficiently accommodated in the space 16, so that the cut piece portion is stretched in contact with the connector 4. It is possible to prevent the insertion resistance of the connection tool 4 from being increased, or to prevent an increase in resistance when the connection tool 4 is pushed in due to the cut piece portion being closed. This space 16 can be formed by the flow path 15 formed in parallel with the connecting tool axial direction communicating with the outer diameter portion 24 of the connecting tool 4. The outer diameter part 24 is an outer surface in the incision part 14 of the connection tool.

  Further, in the present embodiment, the connection tool 4 includes the second fluid processing device 3 in which the through-wall portion 5 is penetrated at a position opposite to the axial tip portion 11 with respect to the incision portion 14; A seal portion 17 having an annular outer peripheral surface capable of liquid-tight sealing with the connector 4 is provided. In this embodiment, the seal portion 17 provided on the connector 4 side is in liquid-tight contact with the plug-side seal portion 18 provided on the inner peripheral surface side on the plug body 8 side attached to the fluid port 7. By doing so, the flow path formed in the connection part between both the fluid processing apparatuses 2 and 3 is liquid-tightly sealed. For this reason, when the connector 4 is molded by injection molding, a molding method in which the mold is divided in a direction parallel to the axial direction of the connector 4 is preferable. When the mold is divided in a direction perpendicular to the axial direction of the connector 4, a dividing line (parting line) of the mold is generated in the seal portion 17 having the annular outer peripheral surface. This is because the sealing performance may be impaired.

  In the illustrated example of FIG. 1, the members constituting the plug body 8, the plug-side seal portion 18, and the cover member 19 provided on the outer peripheral surface side of the fluid port 7 are manufactured as separate members, and then these members are formed. However, it is also possible to configure these members as an integrated member without forming an assembly.

  The ETRF module used as the second fluid processing apparatus 3 in this embodiment is a medical module for removing toxins contained in, for example, dialysate, and a hollow fiber membrane bundle as a functional part inside a cylindrical main body case. Is stored and filled with filling water. The functional part is not particularly limited to the hollow fiber membrane, and other examples include an adsorbent, a flat membrane, and beads.

  The ETRF module is provided with a fluid port, and the arrangement and number of the fluid ports can be arbitrarily determined according to the method of use. In general, as shown in FIG. The fluid ports 7 as described above protrude from two locations and two locations orthogonal to the axis, and both communicate with the inside of the module. The inner diameter of the fluid port 7 is not particularly limited, but an inner diameter of 2 mm to 10 mm is preferably used as the inner diameter of the connecting portion so as not to disturb the smooth flow of the fluid.

  The plugs 8 as described above are detachably attached to the distal end portion of the fluid port 7 to close and protect the fluid port 7. As the material of the main body case 21, for example, polypropylene, polycarbonate, polystyrene, and the like are preferably used, and can be molded integrally with the fluid port 7 by manufacturing by injection molding, and can be manufactured in large quantities with high accuracy. it can. A hollow fiber membrane bundle 22 is accommodated as a functional part inside the main body case 21 and filled with filling water.

  The fluid port 7 and the plug 8 are configured, for example, as shown in FIG. In the illustrated example, the through-wall portion 5 is formed as a part of the plug body 8. Further, in the illustrated example, a cross-shaped groove 23 is engraved in the through-wall portion 5 as a fragile portion in order to facilitate the piercing and tearing by the connection tool 4, but this groove 23 is provided. There is no need to do so, and it is only necessary to perform predetermined piercing and tearing by the connecting tool 4 and thereby the desired penetration of the wall 5 to be penetrated.

  The through wall 5 has, for example, a flexural modulus of 100 MPa or more, 1500 MPa or less, more preferably 1200 MPa or less, and still more preferably 1000 MPa or less, or a Shore A hardness of 40 or more, more preferably 70 or more. On the other hand, it is preferably formed of an elastic body of 90 or less, more preferably 85 or less, so that the fluid port 7 can be closed and can be easily penetrated when the connector 4 is pressed. It is preferable.

  As the material of the through wall 5, for example, polypropylene, polyethylene or the like is preferably used as the synthetic resin, and as the elastic body, synthetic rubber such as silicon rubber, ethylene-propylene-diene rubber (EPDM rubber), nitrile rubber, An elastomer or the like is preferably used. In particular, it is more preferable to use a thermoplastic elastomer because it can be manufactured in large quantities with high accuracy by injection molding.

  In addition, the thickness of the through-wall portion 5 is not particularly limited, but is preferably less than 5.0 mm in order to facilitate penetration by the connector 4, more preferably 3.0 mm or less, and still more preferably. Is 1.5 mm or less, particularly preferably 1.0 mm or less. The thickness is preferably 0.1 mm or more in order to maintain the strength required for the through-wall portion 5, and more preferably 0.2 mm or more.

  In the present embodiment, as shown in FIG. 1, the first fluid treatment device 2 (the second fluid treatment device 3 configured as described above has a through-wall portion 5 on the ETRF module side as shown in FIG. For example, after the connecting tool 4 provided on the dialysis device side is pushed in and the distal end portion 11 in the axial direction of the connecting tool 4 is pierced into the wall 5 to be penetrated, the incision 14 of the connecting tool 4 is covered by further pushing. The through-wall portion 5 is torn, and the two fluid treatment devices 2 and 3 are connected so as to communicate in a liquid-tight manner in a state where a seal for the connection is secured.

  The present invention can be applied to connections between all fluid processing apparatuses, and can be connected in a sanitary manner with an extremely simple operation. Therefore, the present invention is particularly suitable for connections in medical fluid processing systems.

DESCRIPTION OF SYMBOLS 1 Fluid processing system 2 1st fluid processing apparatus 3 2nd fluid processing apparatus 4 Connection tool 5 Through-wall part 6 Connection mechanism 7 Fluid port 8 Plug body 11 Axial front-end | tip part 12 Ridge-shaped part 13 Cutting edge part 14 Incision part 15 channel 16 space 17 seal part 18 plug side seal part 19 cover member 21 body case 22 hollow fiber membrane bundle 23 groove 24 outer diameter part

Claims (13)

A connection mechanism that communicates the first fluid treatment device having a connection tool and the second fluid treatment device having a penetration wall portion through the penetration of the penetration wall portion by the connection tool,
The connecting tool branches into a sharp axial tip that can pierce the through wall by pushing the connecting into the through wall, and a plurality of ridges from the axial tip. An incision having a cutting edge that extends in the axial direction of the connection tool, and that can cut the through-wall portion by further pushing the connection tool into the through-wall wall at the distal end of the connection tool in the radial direction Have
A flow path capable of communicating the first fluid treatment device and the second fluid treatment device in a state where the connection tool penetrates the through-wall portion is formed in a central portion in the radial direction of the connection tool. A connection mechanism for a fluid processing apparatus.   2. The cross-section in a direction crossing the connecting tool with respect to the axial direction, the shape connecting the respective cutting edge portions of the incision portion is formed in any one of a triangle, a quadrangle, a pentagon, and a hexagon. Connection mechanism for fluid processing apparatus.   The connection mechanism for a fluid treatment apparatus according to claim 1 or 2, wherein a blade edge angle of the blade edge portion is in a range of 10 to 70 degrees.   The connecting tool radial direction dimension of the position of the blade edge | tip part in the said incision part is gradually large in the direction away from the said axial direction front-end | tip part in a connecting tool axial direction. Connection mechanism for fluid processing equipment.   The fluid processing device connection according to claim 4, wherein an angle between a line segment connecting a tip end and a terminal end of the blade edge portion and a central axis of the connector is in a range of 5 degrees to 22.5 degrees. mechanism.   A space is formed between the ridge-shaped portions adjacent to each other in the connecting tool circumferential direction among the plurality of ridge-shaped portions, in which a space capable of accommodating a cut piece portion of the through-wall portion cut by the blade edge portion is formed. The connection mechanism for fluid processing apparatuses according to any one of 1 to 5.   The fluid processing apparatus connection mechanism according to any one of claims 1 to 6, wherein a flow path formed in a central portion in a radial direction of the connection tool is formed in a direction parallel to a connection tool axial direction.   The connection tool is liquid-tight between the connection tool and the second fluid treatment device in which the through-wall portion is penetrated at a position opposite to the axial tip portion with respect to the incision. The fluid processing device connection mechanism according to claim 1, further comprising a seal portion capable of being sealed.   The fluid treatment device connection mechanism according to any one of claims 1 to 8, wherein the through-wall portion is formed as a part of a plug that is detachably attached to the second fluid treatment device.   The fluid treatment device connection mechanism according to claim 1, wherein at least one of the first fluid treatment device and the second fluid treatment device is a medical fluid separation device.   The connection mechanism for a fluid treatment device according to claim 10, wherein the second fluid treatment device is an endotoxin capture filter module, and the first fluid treatment device is a hemodialysis device or a blood purification device.   It has a 1st fluid processing apparatus and a 2nd fluid processing apparatus, and the connection mechanism for fluid processing apparatuses in any one of Claims 1-11, The said 1st fluid processing apparatus via the said connection mechanism And a fluid treatment system, wherein the second fluid treatment device is in fluid-tight communication.   After the first fluid processing device and the second fluid processing device are in fluid-tight communication with each other via the fluid processing device connection mechanism according to any one of claims 1 to 11, the first fluid processing device and A method for operating a fluid processing apparatus, comprising operating the second fluid processing apparatus.

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