JP6468630B2 - Blood filtration equipment - Google Patents

Description

  The present invention relates to a blood filtration device used for filtering collected blood and the like.

  2. Description of the Related Art Conventionally, a blood filtration device including a filter for filtering collected blood is known. For example, blood collected by inserting a thrombus aspiration catheter into the occlusion site of a blood vessel occluded by a thrombus, etc., is filtered using a blood filtration device, and the residue containing the separated thrombus is observed or analyzed Has been done.

  Such a blood filtration instrument is generally provided with a blood storage region provided with a filter on the bottom wall or peripheral wall of a cup-shaped rigid member, as in the cell strainer described in JP2013-141456A (Patent Document 1). A wide annular frame that extends like a bowl from the opening of the rigid member is provided, and the annular frame is mounted on the container by overlapping the opening of the container that stores the filtered blood. . Then, by pouring the collected blood from above into the blood accommodating region through the opening, the blood is filtered by the filter, and the thrombus and the like are separated from the blood.

  However, in such a blood filtration device having a conventional structure, it is difficult to avoid an increase in size, for example, by providing a wide annular frame that spreads in a bowl shape in order to achieve stable attachment to the opening of the container. Therefore, the overall size of the filtration device is larger than the filtration area of the filter and the volume of the blood storage area, and the handling of the device is not only troublesome, but the residue collected by filtration is formalin for pathological diagnosis, etc. In some cases, it is difficult to perform the pretreatment such as immersing in the container by putting the filtration device into the prepared processing container.

  At present, such a problem is dealt with by preparing a small container for pretreatment such as formalin soaking and transferring the filtered residue to such a small container. However, not only another small container is required, but also an extra step of transfer is required, which deteriorates workability and may cause errors.

JP2013-141456A

  Here, the present invention has been made in the background as described above, and the problem to be solved is to maintain the stability in the attached state to the container, and to the residue collected by filtration. An object of the present invention is to provide a blood filtration device having a novel structure that can improve the workability thereafter.

According to a first aspect of the present invention, there is provided a blood filtration instrument comprising: a support attached to an opening of a container for containing filtered blood; and a blood filtration region having a through hole covered with a blood filtration membrane. The blood filtration region is constituted by a cup-shaped filter container having a wall portion with the through hole covered with the blood filtration membrane, and the filter container is detachably assembled to the support. And a temporary fixing mechanism for releasably fixing the filter container and the support, and a fixing piece protruding from the opening of the filter container to the outer peripheral side is formed. And a protrusion provided on one side between the opposing surfaces of the support and a concave portion provided on the other of the fixing piece and the opposing surface of the support and fitted with the protrusion. JP that mechanism is configured It is an.

  In the blood filtration device structured according to this aspect, the filter container provided with the blood filtration membrane is configured separately from the support attached to the container, and is detachably assembled. Therefore, in order to realize stable attachment to the opening of the container, even when the support is provided in a large size, it is possible to remove the filter container containing the filtered and collected residue from the support and perform subsequent processing. It becomes possible. Therefore, it is possible to remarkably improve the subsequent workability with respect to the residue collected by filtration while securing the stability in the attached state to the container.

Moreover, in the blood filtering instrument having the structure according to this aspect, the filter container that is removable from the support can be temporarily fixed to the support by the temporary fixing mechanism. Accordingly, the filter container can be prevented from being accidentally detached from the support body when attaching the blood filtration device to the container or pouring the aspirated blood into the blood storage area, so that stable work can be performed. It becomes possible. Furthermore, in the blood filtering instrument of this aspect, a fixing piece protruding from the opening portion of the filter container to the outer peripheral side is formed, and a temporary fixing mechanism is provided between the opposing surfaces of the fixing piece and the support. Therefore, the temporary fixing mechanism can be realized with a simple structure. The through-hole covered with the blood filtration membrane can be provided at any location on the wall of the filter container, and is preferably provided on the bottom wall, but may be provided on the peripheral wall in addition or instead. good. Furthermore, the blood filtration device of this aspect may have a configuration in which a single blood storage region is formed of a filter container, or a configuration in which at least one of a plurality of blood storage regions is formed of a filter container.

According to a second aspect of the present invention, there is provided a blood filtration instrument comprising: a support attached to an opening of a container containing filtered blood; and a blood filtration region having a through hole covered with a blood filtration membrane. The blood filtration region is constituted by a cup-shaped filter container having a wall portion with the through hole covered with the blood filtration membrane, and the filter container is detachably assembled to the support. In addition, a grip piece extending from the opening portion of the filter container to the outer peripheral side is formed, and the grip piece protrudes to the outer periphery from the upper surface of the support body in a state where the filter container is mounted on the support body. Is formed .

In addition to the effect described in the above [0009] , the blood filtration device structured according to this aspect can exhibit the following effect. That is, according to this aspect, since the grip piece of the filter container mounted on the support is projected to the outer peripheral side from the upper surface of the support, the filter can be obtained by picking the grip piece with fingers. The container can be easily detached from the support and can be stably gripped. In addition, the gripping piece of this aspect can also be formed in common with the fixed piece of the said aspect 1. Further, such a gripping piece can be formed in a flange shape over the entire circumference of the opening portion of the peripheral wall portion of the filter container, and a tongue piece shape or the like partially protruding on the circumference as in the embodiment. Ru also possible der be formed with.

According to a third aspect of the present invention, there is provided a blood filtration instrument comprising: a support attached to an opening of a container for containing filtered blood; and a blood filtration region having a through hole covered with a blood filtration membrane. The blood filtration region is constituted by a cup-shaped filter container having a wall portion with the through hole covered with the blood filtration membrane, and the filter container is detachably assembled to the support. In addition, the support body has an annular frame portion that is superimposed on the opening portion of the container, and the filter container is assembled to the surrounding space surrounded by the annular frame portion, In addition, a partition wall that partitions the surrounding space into a plurality of regions is integrally provided in the annular frame portion, and the blood filtration region is configured in the plurality of regions partitioned by the partition wall .

In addition to the effect described in the above [0009] , the blood filtration device structured according to this aspect can exhibit the following effect. That is, according to this aspect, since the support body includes the annular frame portion, the support body can be stably attached to the container via the annular frame portion. Furthermore, a space-efficient blood filtration device can be realized by assembling the filter container in the surrounding space surrounded by the annular frame portion. Further, in the blood filtration device of this aspect, since the partition wall that divides the surrounding space of the annular frame portion overlapped with the opening portion of the container into a plurality of pieces is integrally provided in the annular frame portion, a plurality of blood containing regions the while installation space efficiently, aims to improve strength of the entire support, Ru can be further improved workability and handling properties.

According to a fourth aspect of the present invention, there is provided a blood filtration instrument comprising: a support attached to an opening of a container containing filtered blood; and a blood filtration region having a through hole covered with a blood filtration membrane. The blood filtration region is constituted by a cup-shaped filter container having a wall portion with the through hole covered with the blood filtration membrane, and a plurality of the filter containers can be attached to and detached from the support body, respectively. together are assembled, those mutually distinguishable identification signs are found provided at their respective filter vessel.

In addition to the effects described in [0009] above , the blood filtration device of this aspect can exhibit the following effects. That is, according to this aspect, since a plurality of filter containers are assembled from the support so as to be detachable, the filtration residue collected from any part can be obtained by attaching each identification identification mark to each filter container. It is possible to easily identify whether it is an object. Therefore, even when a plurality of filter containers can be detached from the support, the collected filtration residue can be surely identified, and the occurrence of errors can be advantageously prevented .

According to a fifth aspect of the present invention, there is provided a blood filtration instrument comprising: a support attached to an opening of a container containing filtered blood; and a blood filtration region having a through hole covered with a blood filtration membrane. The blood filtration region is constituted by a cup-shaped filter container having a wall portion with the through hole covered with the blood filtration membrane, and the filter container is detachably assembled to the support. In addition, a plurality of types of the supports different from each other are included, and a common filter container can be assembled to the plurality of types of supports .

In addition to the effects described in [0009] above , the blood filtration device of this aspect can exhibit the following effects. That is, according to this aspect, it is possible to prepare in advance a plurality of types of supports having different sizes and shapes corresponding to the size and structure of the container on which the blood filtration instrument is mounted. Moreover, a common filter container can be assembled to each of the plurality of types of supports. Therefore, for example, by combining and selling a plurality of types of supports having different sizes and shapes for a common filter container, it is possible to arbitrarily select and use a support of an arbitrary size according to the container to be used. share a common filter container against the chosen support also it becomes possible to use the, that further improvement of convenience can be achieved.

A sixth aspect of the present invention is the blood filtration device according to any one of the first to fifth aspects, wherein a plurality of the blood filtration regions are provided to open above the support, At least one of the plurality of blood filtration regions is constituted by the filter container that can be attached to and detached from the support .

In the blood filtration device of this aspect, independent blood filtration can be realized in each of a plurality of blood filtration regions. In other words, when aspirating thrombus at different locations, or when aspirating a thrombus in multiple portions at the same location, it may be desirable to observe and inspect the thrombus at each aspiration. In such a case, the filtration residue at each suction time can be divided into a plurality of blood filtration regions by filtering the blood at each suction time in a separate blood filtration region. Moreover, since at least one blood filtration area is configured by a possible filter container removable, Ru can be improved further convenience.

  According to the blood filtration device having the structure according to the present invention, the filter container provided with the blood filtration membrane is configured separately from the support attached to the container for filtering the collected blood, and is detachably assembled. I am doing so. Accordingly, it is possible to remove the filter container containing the filtered and collected residue from the support and perform subsequent post-treatment while realizing stable attachment to the opening of the container with the support. Therefore, it is possible to remarkably improve the subsequent workability with respect to the residue collected by filtration while securing the stability in the attached state to the container.

The perspective view which shows the state by which the blood filtration instrument as the 1st Embodiment of this invention was attached to the container. The disassembled perspective view of the blood filtration instrument attached to the container shown in FIG. III-III cross-sectional enlarged view in FIG. The IV-IV cross-sectional enlarged view in FIG. The disassembled perspective view which shows the blood filtration instrument as the 2nd Embodiment of this invention. The top view which shows the blood filter instrument as the 3rd Embodiment of this invention. The VII-VII cross-sectional enlarged view in FIG. The top view which shows the blood filtration instrument as the 4th Embodiment of this invention. The disassembled perspective view which shows the blood filtration instrument as the 5th Embodiment of this invention (a container is also included). The cross-sectional enlarged view which shows another example of the aspect of the temporary fixing mechanism of 1st Embodiment shown by FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 4 show a blood filtration device 10 as a first embodiment of the present invention. The blood filtering instrument 10 is attached to an opening 14 of a container 12 such as a beaker that contains filtered blood, and is used for filtering collected blood. In the following description, unless otherwise specified, the up and down direction refers to the up and down direction in FIG. 1, which is a substantially vertical up and down direction when the blood filter 10 is used.

  More specifically, the blood filtering instrument 10 includes a support body 16 attached to the opening 14 of the container 12 and a filter container 18 that is detachably assembled to the support body 16. Both of the support 16 and the filter container 18 are integrally formed of a synthetic resin such as polypropylene (PP) or polyamide (PA) by injection molding or the like.

The support body 16 has an annular frame portion 20 that extends in a cylindrical shape in the vertical direction. The annular frame portion 20 has a structure in which a large-diameter cylindrical portion 22 positioned below and a small-diameter cylindrical portion 24 positioned above are connected by an annular portion 26 disposed between the cylindrical portions 22 and 24. ing. More specifically, the annular portion 26, the upper end of the large-diameter cylindrical portion 22 is configured spread as to connect the lower end of the small-diameter cylindrical portion 24. The bottom surface of the annular portion 26 is superimposed on the opening 14 of the container 12, so that the support 16 can be stably attached to the container. Further, on one side (left side in FIG. 1) in one axial direction of the annular portion 26, the large-diameter cylindrical portion 22, the small-diameter cylindrical portion 24, and the annular portion 26 are arranged in the orthogonal direction of the annular frame portion 20. In contrast, a notch 27 is formed in a substantially rectangular shape and notched so as to open downward. The notch 27 functions as a discharge port when blood stored in the container 12 is discharged. In addition, on the other side (right side in FIG. 1) opposite to one side in the axial direction of the annular portion 26, as shown in FIG. The frame portion 20 is cut out so as to open in a substantially rectangular shape and downward with respect to the direction perpendicular to the axis.

  An inner flange portion 30 that extends inward in the axial direction is formed at the upper end portion of the small-diameter cylindrical portion 24 of the annular frame portion 20, and protrudes downward at the extended end portion of the inner flange portion 30. A substantially cylindrical peripheral wall 32 is provided. Inside the peripheral wall 32, a partition wall 34 that divides the region surrounded by the peripheral wall 32 into three parts in the circumferential direction in plan view is formed with substantially the same projecting dimensions as the peripheral wall 32. The peripheral wall 32 is formed so that the diameter decreases from the upper end to the lower end. Thereby, the protrusion front-end | tip part of the surrounding wall 32 is made a little smaller diameter than the protrusion base end part of the surrounding wall 32. FIG.

As described above, of the space surrounded by the annular frame portion 20, the surrounding space 36 surrounded by the peripheral wall 32 provided in the small diameter cylindrical portion 24 of the annular frame portion 20 is partitioned into three regions by the partition wall 34. . In the three regions partitioned by the partition wall 34, three blood storage regions 38 as blood filtration regions are opened above the support 16. In addition, the upper surface 39 of the inner flange portion 30 adjacent to the three regions partitioned by the partition wall 34 is provided with 1-shaped, 2-shaped, and 3-shaped projections 40, respectively.

  In this embodiment, as shown in FIGS. 1 to 4, two of the three blood storage regions 38 are two blood storage regions 38 (in FIG. The blood storage area 38) adjacent to the peripheral wall 32 is surrounded by a peripheral wall 32 and a partition wall 34 provided in the small-diameter cylindrical portion 24 of the annular frame portion 20. And the through-hole 41 is comprised by the downward opening part of the area | region enclosed by this surrounding wall 32 and the partition 34. FIG. A blood filtration membrane 42 as a filter is disposed in the through-hole 41 so as to cover in a stretched state. As the blood filtration membrane 42, one having physical properties and a mesh diameter required for filtration is employed. For example, as a general thrombus filtration application, it is a mesh sheet of synthetic resin material such as polyamide, polysulfone, polyethylene, polymethyl methacrylate, etc., and a mesh aperture of about 50 to 200 μm is preferably employed.

  On the other hand, the remaining one blood storage region 38 among the three blood storage regions 38 is constituted by a cup-shaped filter container 18 having a fan shape in plan view, as shown in FIG. A through hole 44 that opens downward is formed on the bottom surface of the filter container 18. A blood filtration membrane 42 is disposed in the through hole 44 so as to cover it in a stretched state. That is, the filter container 18 is assembled to one of the regions divided into three equal parts by the partition wall 34 in the surrounding space 36 surrounded by the peripheral wall 32 of the annular frame portion 20. Since the peripheral wall 46 of the filter container 18 is slightly smaller in diameter on the lower side than the upper side, similarly to the peripheral wall 32 of the annular frame part 20, the peripheral wall 46 of the filter container 18 is inside the peripheral wall 32 of the annular frame part 20. It is positioned in contact with the peripheral surface.

  A substantially rectangular flat plate-like gripping piece 50 extending from the peripheral portion to the outer peripheral side is formed at the center portion in the circumferential direction of the upper opening 48 of the peripheral wall 46 of the filter container 18. The gripping piece 50 is formed so that the gripping piece 50 protrudes from the upper surface 39 of the support body 16 to the outer periphery in a state where the filter container 18 is mounted on the support body 16 (see FIGS. 1, 3, and 4). Yes. As a result, the user can easily remove the filter container 18 from the support 16 and stably hold it by gripping the grip piece 50 with fingers.

  In addition, an identification mark 54 formed of a 1-shaped through hole is formed in the central portion of the gripping piece 50 of the filter container 18. When the filter container 18 is mounted on the support 16 (see FIGS. 1, 3, and 4), a 1-shaped protrusion 40 protruding from the upper surface 39 of the support 16 is provided on the identification mark 54 of the gripping piece 50. The filter container 18 is temporarily fixed with respect to the support body 16 by being fitted. That is, the temporary fixing mechanism for releasably fixing the filter container 18 and the support 16 is configured by the identification mark 54 of the gripping piece 50 and the protrusion 40 of the support 16. As described above, the blood filtration device 10 includes a temporary fixing mechanism. Accordingly, it is possible to prevent the filter container 18 from being accidentally detached from the support body 16 when the blood filtering device 10 is attached to the container 12 or when the sucked blood is poured into the blood containing region 38. It is possible and stable work is possible.

  The blood filtering instrument 10 having such a configuration is used by being mounted on the opening 14 of a container 12 such as a beaker that contains filtered blood. Specifically, by pouring the collected blood from above into the filter container 18 that is the blood storage region 38 through the upper opening 48, the blood is filtered by the blood filtration membrane 42 that is a filter, and the thrombus and the like are removed from the blood. To be separated. Then, the filter container 18 is removed from the support 16 and the filter container 18 is put into the prepared processing container for pretreatment such as immersing the filtered residue in formalin for pathological diagnosis or the like. Are to be processed.

  According to the blood filtration instrument 10 of the present embodiment having such a structure, the filter container 18 constituting the blood storage region 38 is detachably assembled to the support 16. Therefore, even when the support 16 is enlarged in order to realize stable attachment to the opening 14 of the container 12, the size of the filter container 18 that accommodates the filtered residue is made compact. Can be configured. Therefore, it is possible to perform the subsequent processing without impairing the subsequent workability while ensuring the stability of the blood filtering instrument 10 attached to the container 12.

  In addition to the filter container 18 constituting one blood storage area 38, two blood storage areas 38 are formed on the annular frame 20 of the support 16, and these three blood storage areas 38 are independent of each other. Blood filtration is feasible. In other words, when aspirating thrombus at different locations, or when aspirating a thrombus in multiple portions at the same location, even if you want to observe and inspect the thrombus for each aspiration separately, Each filtration residue can be divided into these three blood storage areas 38.

  Furthermore, since the blood storage region 38 to which the filter container 18 is assembled is formed in the surrounding space 36 surrounded by the annular frame portion 20 that constitutes the support body 16, the space-efficient blood filtration device 10 is realized. be able to. In addition, since the partition wall 34 that divides the surrounding space 36 of the annular frame portion 20 into three blood containing regions 38 is provided integrally with the annular frame portion 20, the strength of the entire support 16 can be improved. .

  Next, the blood filtering instrument 60 as the second embodiment of the present invention will be described in detail with reference to FIG. 5, but members and parts having the same structure as the above embodiment are described above in the drawing. By attaching the same reference numerals as those of the embodiment, detailed description thereof will be omitted. In this embodiment, a fixed piece 64 is formed in the filter container 62, and the filter container 62 and the support body 16 are formed by a through hole 66 that is a recess provided in the fixed piece 64 and a protrusion 68 provided in the support body 16. An embodiment different from the above-described embodiment is shown in that a temporary fixing mechanism for releasably fixing is configured.

  More specifically, the fixed piece 64 has a substantially rectangular flat plate shape, and is formed so as to protrude from the peripheral edge of the upper opening 48 to the outer peripheral side on one end side in the circumferential direction of the peripheral wall 46 of the filter container 62. Yes. Further, a through hole 66 having a substantially circular cross-sectional shape is provided in the center of the fixed piece 64. On the other hand, a protrusion 68 having a substantially circular cross-sectional shape protruding upward is formed on the upper surface 39 of the support 16. The protrusion 68 is formed at a position corresponding to the through hole 66. Thereby, in a state where the filter container 62 is mounted on the support body 16, the protrusion 68 is fitted into the through hole 66. Therefore, it is also possible to provide a temporary fixing mechanism by providing a separate fixing piece without adopting a configuration in which the holding piece 50 has the function of the fixing piece 64 as in the first embodiment. In this case, the identification mark 54 can be provided only on the gripping piece 50, and the structure of the identification mark 54 can be simplified.

  Although this embodiment differs in the temporary fixing mechanism from the said embodiment, about the structure similar to the said embodiment other than that, the effect similar to the said embodiment can be acquired. Moreover, in this embodiment, the temporary fixing mechanism can be realized with a simple structure in which the fixing piece 64 is formed on the filter container 62 and the protrusion 68 is provided on the upper surface 39 of the corresponding support 16. The configuration of the temporary fixing mechanism is not limited to the above configuration. For example, the protrusion 68 that protrudes downward may be formed on the fixed piece 64 of the filter container 62, while the upper surface 39 of the support 16 may be provided with a recess. In this case, the concave portion provided on the upper surface 39 of the support 16 may be a through hole or a groove recessed downward.

  Subsequently, the blood filtering instrument 70 according to the third embodiment of the present invention will be described in detail with reference to FIGS. 6 to 7, but members and parts having the same structure as the first embodiment are described below. In the figure, the same reference numerals as those in the first embodiment are given, and the detailed description thereof is omitted. In the present embodiment, a fitting groove 74 is formed in the support 72, and a fitting piece 78 to be inserted into the fitting groove 74 is formed in the filter container 76. The embodiment is different from the first embodiment in that a temporary fixing mechanism for releasably fixing the filter container 62 and the support body 72 by the piece 78 is configured.

More specifically, the support body 72 is formed with a pair of notches 80 and 80 that open in the vertical direction and the opposed peripheral walls. A pair of fitting grooves 74, 74 having a substantially rectangular cross-sectional shape extending in the direction perpendicular to the axis of the support 72 and opening to the inner side and the peripheral wall of the notch 80 are formed on the upper portions of the opposing side walls of the notch 80. Is formed. On the other hand, the filter container 76 is formed in a substantially rectangular cup shape in plan view. A pair of fitting pieces 78, 78 having a substantially rectangular cross-sectional shape projecting outward are formed on the upper part of the opposing side wall of the filter container 76 over substantially the entire length in the width direction of the side wall. Then, by inserting the pair of fitting pieces 78, 78 of the filter container 62 into the pair of fitting grooves 74, 74 of the support body 72, the filter container 76 can be slidably mounted on the support body 72. It is possible.

  Even if the temporary fixing mechanism is different from that of the first embodiment as in this embodiment, the filter container 76 can be detachably assembled to the support 72, and the first embodiment and Similar effects can be obtained. Moreover, since the filter container 76 can be slid on the support 72, the filter container 76 can be easily and reliably temporarily fixed to the support 72. In addition, while the fitting piece 78 is formed in the support body 72, the filter container 76 may be provided with the fitting groove 74.

  Moreover, although the blood filtration instrument 82 as the fourth embodiment of the present invention will be described in detail with reference to FIG. 8, members and parts having the same structure as the first embodiment are shown in the figure. By attaching the same reference numerals as those in the first embodiment, detailed description thereof will be omitted. In the present embodiment, the filter containers 18 and 84 are detachably assembled to the support 16, and identification marks 54 that can be distinguished from each other are provided in the filter containers 18 and 84. An embodiment different from the first embodiment is shown.

  More specifically, two blood storage areas 38 of the three blood storage areas 38 are constituted by the filter containers 18 and 84. At the center part of the gripping piece 50 of the filter containers 18 and 84, an identification mark 54 made of a 1-shaped or 2-shaped through-hole is formed. On the other hand, a protrusion 40 is formed on the upper surface 39 of the support 16 so as to protrude upward in the shape of a letter 1 or a letter 2. When the filter containers 18 and 84 are attached to the support 16, the filter container 18 and 84 is inserted into the identification mark 54 of the gripping piece 50 by fitting the 1-shaped or 2-shaped projection 40. It is temporarily fixed to the support 16. That is, the temporary fixing mechanism for releasably fixing the filter container 18 and the support 16 is configured by the identification mark 54 of the gripping piece 50 and the protrusion 40 of the support 16. The filter container 84 has the same structure as the filter container 18 except for the shape of the identification mark 54 of the gripping piece 50. Further, unlike the first embodiment, the blood filtration membrane 42 is not provided in the stretched state so as to cover the region of the support 16 to which the filter container 84 is attached, unlike the first embodiment.

  In the present embodiment, since the plurality of filter containers 18 and 84 are detachably assembled to the support body 16, the same effects as those of the first embodiment can be obtained, and further convenience can be obtained. Improvement can be achieved. In addition, since each of the filter containers 18 and 84 is provided with an identification mark 54 that can be distinguished from each other, it can be easily identified from which part the filtration residue is collected, and a plurality of filter containers can be identified. The possibility of errors caused by making 18 and 84 detachable from the support 16 has been eliminated.

  Furthermore, the blood filter 88 (88a, 88b, 88c) according to the fifth embodiment of the present invention will be described in detail with reference to FIG. 9, but the member having the same structure as the first embodiment and About the site | part, the code | symbol same as the said 1st Embodiment is attached | subjected in a figure, and those detailed description is abbreviate | omitted. In this embodiment, while including three different types of supports 90a, 90b, 90c, a common filter container 18 can be assembled to each of the three types of supports 90a, 90b, 90c. In this regard, an embodiment different from the first embodiment is shown.

  More specifically, the three different types of supports 90a, 90b, and 90c share the small-diameter cylindrical portion 24 located at the upper side with the large-diameter cylindrical portions 92a, 92b, and 92c located below and the cylindrical portions 24. , 92, and the annular portions 94a, 94b, 94c disposed between them are enlarged in diameter. Thereby, even if the sizes and shapes of the supports 90a, 90b, 90c are different, the common filter container 18 can be assembled, and the containers 96a, 88a, 88b, 88c to which the blood filtration devices 88 (88a, 88b, 88c) are attached are mounted. Corresponding to the size and structure of 96b and 96c, the size and shape of the large diameter cylindrical portions 92a, 92b and 92c can be changed.

  Also in this embodiment, since the common filter container 18 can be detachably assembled to the supports 90a, 90b, 90c, the same effect as in the first embodiment can be obtained. In addition, three types of supports 90a, 90b, and 90c having different sizes and shapes corresponding to the sizes and structures of the containers 96a, 96b, and 96c to which the blood filtration device 88 (88a, 88b, and 88c) is attached are previously provided. By preparing, the versatility of the blood filtration device 88 can be improved. That is, for example, by combining and selling a plurality of types of supports different in size and shape with respect to the common filter container 18, while appropriately selecting and using a support of any size according to the container to be used, It is possible to share a common filter container for an arbitrarily selected support, and further improvement in convenience can be achieved. In addition, the kind of blood filtration instrument and a support body is not limited to three types of illustration, It can set arbitrarily.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited by the specific description. For example, in the present embodiment, the through-hole 44 covered with the blood filtration membrane 42 is provided on the bottom wall of the filter container 18, but may be provided at any place on the wall portion constituting the filter container 18. good. In the present embodiment, the three blood storage areas 38 are configured. However, the number of blood storage areas 38 can be arbitrarily set to three or more and less than three, and has a single blood storage area. In addition, the blood storage area may be formed of a filter container. In addition, in the present embodiment, one or two of the three blood storage areas 38 are configured by the filter container, but all blood storage areas 38 may be configured by the filter container. Good. In other words, the number of blood storage regions 38 and filter containers can be set arbitrarily.

  The gripping piece 50 can also be formed in a flange shape over the entire circumference of the upper opening 48 of the peripheral wall 46 of the filter container 18, or partially on the periphery as in the first embodiment. It is also possible to form it with a tongue piece shape or the like protruding in the shape.

  In addition, as shown in FIG. 10, the gripping piece 50 of the filter container 98 has a substantially rectangular shape extending downward from the lower surface of the gripping piece 50 over substantially the entire length in the width direction of the gripping piece 50. The extending portion 100 may be formed, and the extending portion 100 may be engaged with the outer peripheral surface of the small-diameter cylindrical portion 24 of the support 16 to constitute a temporary fixing mechanism.

  In the above-described embodiment, the embodiment in which the blood filtration device 10, 60, 70, 82, 88 is mounted on an arbitrary container such as a beaker has been described. However, the embodiment is dedicated to the shape of the support 16, 72, 90. These containers may be prepared and used together.

10, 60, 70, 82, 88, 88a-c: blood filtration device, 12, 96a-c: container, 14: opening, 16, 72, 90a-c: support, 18, 62, 76, 84, 98: filter container, 20: annular frame, 34: partition wall, 36: surrounding space, 38: blood containing area, 39: upper surface, 40: protrusion (temporary fixing mechanism), 41, 44: through hole, 42: blood filtration Membrane, 50: gripping piece, 54: identification mark (temporary fixing mechanism), 64: fixing piece, 66: through hole (recess) (temporary fixing mechanism), 68: protrusion (temporary fixing mechanism), 74: fitting groove (Temporary fixing mechanism), 78: Fitting piece (Temporary fixing mechanism), 100: Extension part (Temporary fixing mechanism)

Claims (6)

In a blood filtration instrument comprising a support attached to an opening of a container containing filtered blood, and a blood filtration region having a through hole covered with a blood filtration membrane,
The blood filtration region is constituted by a cup-shaped filter container having a wall portion with the through hole covered with the blood filtration membrane;
The filter container is removably assembled to the support ,
A temporary fixing mechanism for releasably fixing the filter container and the support, and
A fixed piece that protrudes from the opening of the filter container to the outer peripheral side is formed, a protrusion provided on one side between the fixed piece and the opposing surface of the support, and the fixed piece and the support The blood filtering instrument , wherein the temporary fixing mechanism is configured to include a recess provided on the other side between the opposing surfaces and into which the protrusion is fitted . In a blood filtration instrument comprising a support attached to an opening of a container containing filtered blood, and a blood filtration region having a through hole covered with a blood filtration membrane,
The blood filtration region is constituted by a cup-shaped filter container having a wall portion with the through hole covered with the blood filtration membrane;
The filter container is removably assembled to the support,
Wherein and gripping pieces extending to the outer peripheral side is formed from the opening portion of the filter container, formed such that the gripping piece protrudes to the outer periphery than the upper surface of the support in a state where the filter container is mounted on the support A blood filtration instrument characterized by being made. In a blood filtration instrument comprising a support attached to an opening of a container containing filtered blood, and a blood filtration region having a through hole covered with a blood filtration membrane,
The blood filtration region is constituted by a cup-shaped filter container having a wall portion with the through hole covered with the blood filtration membrane;
The filter container is removably assembled to the support,
The support body has an annular frame portion superimposed on the opening portion of the container, and the filter container is assembled to the surrounding space surrounded by the annular frame portion; and
The blood filtration region is characterized in that a partition wall for partitioning the surrounding space into a plurality of regions is integrally provided in the annular frame portion, and the blood filtration region is configured in the plurality of regions partitioned by the partition wall. Instruments. In a blood filtration instrument comprising a support attached to an opening of a container containing filtered blood, and a blood filtration region having a through hole covered with a blood filtration membrane,
The blood filtration region is constituted by a cup-shaped filter container having a wall portion with the through hole covered with the blood filtration membrane;
A blood filtration device, wherein a plurality of filter containers are detachably assembled to the support, and identification marks that are distinguishable from each other are provided in each of the filter containers. In a blood filtration instrument comprising a support attached to an opening of a container containing filtered blood, and a blood filtration region having a through hole covered with a blood filtration membrane,
The blood filtration region is constituted by a cup-shaped filter container having a wall portion with the through hole covered with the blood filtration membrane;
The filter container is removably assembled to the support,
While that contain mutually different types of said support, blood filtration device, characterized in that it is capable of assembling common of the filter container respectively the plurality several of the support. Wherein said blood filtration region, an opening and provided with a plurality of above the support, at least one of said plurality of hemofiltration region, which is constituted by said filter container detachably attached to said support Item 6. The blood filtration device according to any one of Items 1 to 5 .

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