JP5995312B2 - Filtration equipment - Google Patents

Description

  The present invention relates to a medical filtering instrument for filtering blood or the like sucked from a body by a catheter.

  By using a thrombus aspiration catheter, a thrombus can be aspirated with blood from within a patient's blood vessel. In order to observe and analyze the aspirated thrombus, it is necessary to separate blood and thrombus using a filtering instrument. Patent Document 1 discloses a filtration instrument including a cell strainer corresponding to a filter body and a tube corresponding to a container for containing a filtrate. The cell strainer has a mesh corresponding to the filter element. Specifically, a cell strainer is assembled on the tube, and a mixture of blood and thrombus is placed in the cell strainer. The mixture is filtered through a cell strainer mesh and the thrombus remaining on the cell strainer mesh is observed and analyzed. On the other hand, the blood remaining as the filtrate in the tube is discarded.

Japanese Utility Model Publication No. 5-85405

  In the case of the filtering instrument described in Patent Document 1, it is necessary to remove the cell strainer from the tube and to incline the tube so that the tube takes a discharge posture in the blood discarding operation. In a medical filtering instrument, it is preferable that such a blood disposal operation can be performed by a simpler procedure according to the situation, and there is still room for improvement in this respect.

  This invention is made | formed in view of the said situation, and sets it as the main objective to provide a more convenient filtration instrument.

A filtering device according to a first aspect of the present invention is a filtering device for filtering an object to be filtered such as blood sucked from the body, and a container for containing the filtrate and a filter element for filtering the object to be filtered And a filter body that can be assembled to the upper part of the container, the container for discharging the filtrate contained in the container in a state where the filter body is assembled to the container. together are have a passage forming portion for forming a passage, the discharge of the filtrate from the container through the said passage, characterized in that the carried out by the discharging position by tilting from the filtration position.

  According to the present invention, since the filter main body has a passage forming portion that forms a passage for discharging the filtrate in a state where the filter main body is assembled to the container, the filtrate is discharged without removing the filter main body from the container. Is possible, and convenience is high. When filtering an object to be filtered such as blood, the filtering device takes a substantially horizontal filtering posture. When discharging the filtrate, the filtering device takes a discharging posture inclined with respect to the filtering posture. That is, the filtration device can discharge the filtrate only by taking an inclined discharge posture. It is also possible to remove the filter body from the container and discharge the filtrate, so that the filtrate can be discharged from the container in an appropriate manner depending on the situation.

The filtration device of the second invention is a filtration device for filtering an object to be filtered such as blood sucked from the body, and a container for containing the filtrate and a filter element for filtering the object to be filtered And a filter body that can be assembled to the upper part of the container, the container for discharging the filtrate contained in the container in a state where the filter body is assembled to the container. It has a passage formation part which forms a passage, and has a liquid amount visualizing part which makes it possible to see the amount of filtrate before the filtrate overflows from the container through the passage.

According to the present invention, since the filter main body has a passage forming portion that forms a passage for discharging the filtrate in a state where the filter main body is assembled to the container, the filtrate is discharged without removing the filter main body from the container. Is possible, and convenience is high. Further, by visually observing the liquid amount visualizing part, the amount of the filtrate can be visually observed before the filtrate overflows. Therefore, it is possible to reduce the possibility that the filtrate will overflow unnecessarily by excessively putting an object to be filtered into the filtration device.

  According to a third aspect of the present invention, in the second aspect, the filter element forms a filter surface, and the passage forming portion has an overflow position where the filtrate overflows from the container, and the overflow position is more than the filter surface. It is located above and the said filter element forms the said liquid quantity visual observation part, It is characterized by the above-mentioned.

  According to the present invention, since the overflow position is located above the filter surface, the filtrate comes out on the filter element before the filtrate overflows from the container. Therefore, a filter element functions as a liquid amount visual observation part, and it can reduce a possibility that a filtrate will overflow accidentally.

  According to a second aspect of the present invention, in the second invention, the passage forming portion has an opening that opens toward the outside of the container, and the opening is visible from above the filtration device. The opening portion forms the liquid amount viewing portion.

  According to the present invention, since the opening can be visually observed from above, the filtrate that has reached the vicinity of the opening before overflowing from the opening can be visually observed. Therefore, the opening or the passage in the vicinity of the opening functions as a liquid amount visualizing part, and it is possible to reduce the possibility that the filtrate overflows carelessly.

  According to a fifth aspect of the present invention, in the fourth aspect, the passage forming portion has a stepped portion that is visible from above the filtration device.

  According to the present invention, it is possible to easily recognize that the filtrate has reached a predetermined amount by visually observing that the filtrate has reached the stepped portion.

  The filtering instrument of the sixth invention is the invention according to any one of the first to fifth aspects, wherein the filter body discharges the filtrate stored in the container in a state where the filter body is assembled to the container. It has a suppression part which suppresses that a filtrate is discharged | emitted from the said filter element.

  According to the present invention, since the filter main body has the suppression unit that suppresses the discharge of the filtrate from the filter element, when discharging the filtrate in a state where the filter main body is assembled to the container, the filtrate from the filter element side. The risk of spilling can be reduced.

(A) is a perspective view which shows the filter instrument, (b) is a perspective view which shows the filter main body, (c) is a perspective view which shows the container. (A) is sectional drawing which shows the filtration instrument which has taken the filtration attitude | position, (b) is sectional drawing which shows the filtration instrument which has taken the discharge attitude | position. (A) is a perspective view which shows another filtration instrument, (b) is a perspective view which shows the filter main body, (c) is a perspective view which shows the container. (A) is sectional drawing which shows another filtering instrument of the filtration attitude | position, (b) is sectional drawing which shows another filtering instrument of the accommodation state, (c) is a cross section which shows the container of another filtering instrument. FIG.

[First Embodiment]
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, a filtering device for filtering a mixture of blood and thrombus sucked from the body by a thrombus suction catheter is embodied. FIG. 1A is a perspective view showing the filter device 10, FIG. 1B is a perspective view showing the filter body 20, and FIG. 1C is a perspective view showing the container 40. Fig.2 (a) is sectional drawing which shows the filtration instrument 10 of a filtration attitude | position, (b) is sectional drawing which shows the filtration instrument 10 of a discharge attitude | position.

  As shown in FIG. 1A, the filtration device 10 includes a filter body 20 and a container 40. The filter body 20 is formed so as to be attachable to the upper portion of the container 40, and filters an object to be filtered such as a mixture of blood and a thrombus. The container 40 contains a filtrate such as blood.

  As shown in FIG. 1B, the filter body 20 includes a plurality of filter elements 21 in the present embodiment for filtering an object to be filtered, and a frame body 30 to which the filter elements 21 are attached. The filter element 21 extends in a substantially planar shape and forms a filter surface. The filter element 21 is formed of a mesh that is a mesh having a predetermined roughness. As a material for forming the filter element 21, a resin such as polypropylene, polyethylene terephthalate, polycarbonate, nylon, or a metal such as stainless steel can be used.

  As shown in FIGS. 1B and 2A, the frame 30 is formed so that the filter element 21 is fixed and the frame 30 itself is fixed to the container 40. The frame 30 includes an attachment wall 31 to which the filter element 21 is attached, and a peripheral wall 32 that is located around the attachment wall 31 and constitutes a part other than the attachment wall 31 in the frame 30. An opening is formed by an inner edge of the attachment wall 31, and the filter element 21 is attached to the attachment wall 31 of the frame 30 so as to close the opening. Specifically, the upper surface of the edge of the filter element 21 is fixed to the lower surface of the mounting wall 31. This fixing can be performed by adhesion, welding, or the like. Alternatively, the filter element 21 can be fixed to the frame body 30 by performing insert molding when the frame body 30 is molded.

  The peripheral wall 32 includes an outer edge portion 33, a side wall portion 34, an inclined wall portion 35, and a partition wall 36. The outer edge portion 33 has a flange shape or a bowl shape, and forms a peripheral edge portion of the frame body 30 in the upper portion of the frame body 30. The outer edge portion 33 extends so as to form a horizontal plane. In the present specification, terms indicating directions, positions, etc., such as upper, lower, upper, lower, horizontal, and vertical, unless otherwise specified, that is, the normal use state of the filter device 10, that is, the filter device 10 is substantially horizontal. The direction and position in the case of taking a filtering posture placed at some place are shown.

  The side wall portion 34 extends substantially downward from the inner edge of the outer edge portion 33. The side wall portion 34 extends in a direction substantially orthogonal to the direction in which the outer edge portion 33 spreads, that is, in a substantially vertical direction. The side wall portion 34 is slightly inclined so that the lower end is closer to the center of the frame body 30 than the upper end. The inclined wall portion 35 extends from the lower end of the side wall portion 34 so as to be inclined downward and in a direction toward the center of the frame body 30. The lower end of the inclined wall 35, that is, the inner edge is connected to the mounting wall 31.

  The partition wall 36 is provided so as to divide the filter body 20 into a plurality of regions, in this embodiment, two regions. Specifically, the partition wall 36 includes a partition wall upper portion 36a that extends in the horizontal direction, and a partition wall side portion 36b that is connected to the partition wall upper portion 36a and extends in the vertical direction. The partition wall upper portion 36 a is continuous with the outer edge portion 33 and is located on the same plane as the outer edge portion 33.

  A space surrounded by the filter element 21, the attachment wall 31, the side wall portion 34, the inclined wall portion 35, and the partition wall 36 forms an input space 20 a into which an object to be filtered is input. In other words, the filter main body 20 has a plurality of input spaces 20a partitioned by the partition wall 36 in the present embodiment, and one filter element 21 is provided in each input space 20a. Yes. The volume of the input space 20a is set on the assumption of the amount of the filtering object that is input at a time so that the filtering object does not overflow.

  The frame 30 is integrally molded by injection molding, vacuum molding, or the like using a resin such as polypropylene, polyethylene terephthalate, polycarbonate, or nylon as a forming material.

  As shown in FIG. 1C and FIG. 2A, the container 40 is a flat bottom wall 41 and a peripheral wall 42 that is located around the bottom wall 41 and forms a part other than the bottom wall 41 in the container 40. With. The bottom wall 41 extends in a horizontal plane. Since the bottom wall 41 is flat, the container 40 can be placed in a stable state. The peripheral wall 42 extends from the outer edge of the bottom wall 41 so as to stand in a direction orthogonal to the bottom wall 41 as a whole, that is, vertically. The peripheral wall 42 includes an upper edge portion 43, a side wall portion 44, and an overhang portion 45.

  The upper edge portion 43 extends so as to form a horizontal plane in the upper portion of the container 40. The upper edge portion 43 has a shape substantially corresponding to the outer edge portion 33 of the frame body 30.

  The side wall portion 44 extends substantially downward from the inner edge of the upper edge portion 43. The side wall portion 44 extends in a direction substantially orthogonal to the direction in which the upper edge portion 43 spreads, that is, in a substantially vertical direction. As a whole, the side wall 44 is slightly inclined so that the lower end is closer to the center of the container 40 than the upper end. Specifically, the side wall portion 44 includes a side wall upper portion 44a, a side wall middle portion 44b, and a side wall lower portion 44c.

  The side wall upper portion 44a extends substantially vertically, but is slightly inclined so that the lower end is closer to the center of the container 40 than the upper end. Specifically, the side wall upper portion 44 a of the container 40 is inclined to the same extent as the side wall portion 34 so as to correspond to the side wall portion 34 of the frame body 30. For this reason, the filter main body 20 can be fitted to the container 40 in a state where the side wall portion 34 of the frame 30 and the side wall upper portion 44a of the container 40 are in contact with each other.

  The side wall middle portion 44b is inclined more than the side wall upper portion 44a with respect to the direction orthogonal to the bottom wall 41, that is, the vertical direction. The side wall lower portion 44c is inclined to the same direction as the side wall upper portion 44a with respect to the direction orthogonal to the bottom wall 41, that is, the vertical direction. The lower end of the side wall portion 44, that is, the lower end of the side wall lower portion 44 c is continuous with the outer edge of the bottom wall 41.

  An overhang 45 extends from the outer edge of the upper edge 43. The overhanging portion 45 includes a vertical overhanging portion 45 a that extends substantially downward from the outer edge of the upper edge portion 43, and a lateral overhanging portion 45 b that extends outward from the lower end of the vertical overhanging portion 45 a. The vertical overhanging portion 45 a extends in a direction substantially orthogonal to the upper edge portion 43, and is slightly inclined so that the lower end is positioned outside the container 40 rather than the upper end. The laterally extending portion 45 b extends so as to be parallel to the upper edge portion 43.

  The peripheral wall 42 of the container 40 has a plurality of concave portions 46 as two passage forming portions in the present embodiment. The recess 46 forms the passage 12 for discharging the filtrate stored in the container 40. The recess 46 is configured by forming a shape in which a part of the upper edge portion 43, the side wall portion 44, and the overhang portion 45 is recessed. The recess 46 includes a notch recess 47 positioned on the upper side and a recess recess 48 positioned on the lower side. The cutout recess 47 is configured by cutting out a part of the upper portion of the peripheral wall 42. The lower end of the notch recess 47 is an overflow position where the filtrate overflows from the container 40, and the liquid level of the filtrate in the container 40 is higher than the lower end of the notch recess 47 in a state where the filtration instrument 10 is in the filtering posture. The filtrate overflows from the container 40. The recess 48 is formed by forming a shape in which a part of the inner wall of the peripheral wall 42, specifically, the side wall 44 is recessed toward the outside of the container 40. A portion where the recessed portion 48 is formed protrudes to the outside of the side wall portion 44.

  The container 40 forms a storage space 40a for storing the filtrate. Specifically, a space surrounded by the bottom wall 41 and the side wall 44 forms an accommodation space 40a. The volume of the container 40, that is, the volume of the storage space 40a is set so as to be able to store an amount twice as much as the amount of the object to be filtered put into the input space 20a at a time.

  The container 40 is integrally molded by injection molding, vacuum molding, or the like using a resin such as polypropylene, polyethylene terephthalate, polycarbonate, or nylon as a forming material.

  With reference to Fig.1 (a) and FIG.2 (a), the filter apparatus 10 of the state by which the filter main body 20 was assembled | attached to the container 40 is demonstrated. As shown in FIG. 1A and FIG. 2A, a state in which the filter body 20 is assembled to the container 40 so as to filter an object to be filtered is referred to as a use state of the filter device 10. The filter body 20 can be assembled to the upper part of the container 40 by fitting the filter body 20 into the container 40 from above. At this time, the filter main body 20 is in a state of being fitted into the container 40. Specifically, the side wall portion 34 of the frame body 30 is in contact with the side wall portion 44 of the container 40, and the outer edge portion 33 of the frame body 30 is in contact with the upper edge portion 43 of the container 40. Due to the fitting force between the side wall portion 34 of the frame body 30 and the side wall portion 44 of the container 40, the container 40 is not detached even when only the frame body 30 is lifted. The outer edge portion 33 of the frame body 30 extends outward from the upper edge portion 43 of the container 40.

  In the state in which the filter main body 20 is assembled to the container 40, a plurality of the two passages 12 in this embodiment for discharging the filtrate in the container 40, that is, the accommodating space 40a to the outside of the accommodating space 40a. It is formed between the main body 20 and the container 40. The passage 12 is surrounded by the outer edge portion 33 and the side wall portion 34 of the filter body 20 and the concave portion 46 of the container 40. The passage 12 has an outer opening 12a that opens toward the outside of the accommodation space 40a, and an inner opening 12b that opens toward the inside of the accommodation space 40a. When discharging the filtrate in the storage space 40 a, the filter device 10 is in a discharge posture by tilting the filter device 10, and the filtrate can be discharged from the outer opening 12 a through the passage 12. .

  In the present embodiment, the number of recesses 46 forming the passage 12, the number of input spaces 20a, and the number of filter elements 21 correspond to each other, that is, the same number.

  The outer opening 12 a of the passage 12 is located above the filter surface of the filter element 21. That is, the lower end of the notch recess 47, which is the overflow position, is located above the filter surface. The lower end of the recess 46, that is, the lower end of the recess 48 is located below the filter surface of the filter element 21. As shown in FIG. 2A, in the vicinity of the passage 12, from the connection portion between the attachment wall 31 of the filter body 20 and the inclined wall portion 35 to the connection portion between the lower end portion of the concave portion 46 of the container 40 and the side wall portion 44. The distance D1 is larger than the distance D2 from the connection portion between the side wall portion 34 and the inclined wall portion 35 of the filter body 20 to the connection portion between the cutout recess 47 and the recess 48 of the container 40.

  Next, a method for using the filtering device 10 will be described in the case of filtering a thrombus and blood sucked by a thrombus suction catheter (hereinafter referred to as a suction catheter). The suction catheter is inserted into the blood vessel and pushed forward, and the suction port provided at the tip of the suction catheter reaches the lesioned part where the thrombus exists. The syringe is connected to a hub provided at the proximal end of the suction catheter, and the syringe piston is pulled. Then, a thrombus is sucked into the syringe together with blood. The filtration device 10 is used for filtering the sucked blood and thrombus mixture and observing and analyzing the thrombus.

  The filter device 10 in a use state in which the filter body 20 is assembled to the container 40 is placed on a horizontal base, for example, so that the substantially horizontal filtration posture shown in FIG. In the filtering posture, the bottom wall 41 of the container 40 is substantially horizontal. The mixture of blood and thrombus in the syringe is put into one of the two input spaces 20a of the filter device 10 as an object to be filtered. The volume of the input space 20a corresponds to the volume of a syringe that is assumed to be used. Therefore, even if the mixture in the syringe is put into the charging space 20a at once, the mixture does not overflow. Moreover, since the partition wall 36 is provided, the mixture put in one input space 20a does not move to the other input space 20a. The mixture is filtered by the filter element 21, a thrombus remains as a filtrate on the filter element 21, and blood is accommodated in the accommodating space 40 a of the container 40 as filtrate.

  Subsequently, the balloon catheter is inserted into the lesioned part where the thrombus has been sucked by the suction catheter, the balloon is expanded, and the lesioned part is expanded. Then, the suction catheter is inserted again to the lesioned part, and the thrombus is sucked using the syringe in the same manner as before. This time, the mixture of blood and thrombus in the syringe is put into the unused input space 20a of the two input spaces 20a, that is, the input space 20a having no thrombus.

  In this way, by putting blood and thrombus into separate input spaces 20a before and after using the balloon catheter, the thrombus sucked before using the balloon catheter and the thrombus sucked after using the balloon catheter are individually separated. Observe and analyze.

  Since the aspirated blood is unnecessary, a blood discarding operation for discharging the blood out of the container 40 is performed. In order to discharge the blood from the container 40, the filter device 10 in the filtering posture is tilted while the filter body 20 is assembled to the container 40 so that the discharging posture shown in FIG. . Specifically, the filtration device 10 is gradually inclined so that the one passage 12 is located below the blood level, and the blood in the container 40 is discharged. The discharged blood is put into a predetermined waste liquid container.

  At this time, in the vicinity of the passage 12, the attachment wall 31 and the inclined wall portion 35 of the filter body 20 extend toward the center of the filter body 20 rather than the passage 12. Therefore, when the filtration instrument 10 takes the discharge posture, the attachment wall 31 and the inclined wall portion 35 are located above the passage 12 in the passage 12 on the blood discharge side. For this reason, it is suppressed that the blood in the container 40 is suppressed by the attachment wall 31 and the inclined wall part 35, and the blood leaks from the filter main body 20 side by passing through the filter element 21. That is, the attachment wall 31 and the inclined wall portion 35 function as a suppression portion that suppresses discharge of filtrate such as blood from the filter element 21.

  Alternatively, the filter body 20 may be removed from the container 40 to discharge blood. In this case, first, the filter main body 20 is removed from the filtration instrument 10 in a substantially horizontal filtration posture. Subsequently, the blood 40 is discharged by inclining the container 40 containing the blood to a discharge posture. Also at this time, the recess 46 of the container 40 forms the passage 12 for discharging blood.

In addition, in the above-mentioned usage method, the case where 2 times of suction was performed using the syringe which has the predetermined | prescribed volume assumed, and 2 times of filtration was performed was demonstrated. However, it is also conceivable that a syringe having a volume larger than the volume assumed at the time of designing the filtration instrument 10 is used, or that three or more times of filtration are performed. Even in such a case, the blood which is the filtrate from the filtration device 10 is prevented from overflowing carelessly. This will be described below. As the material to be filtered is put into the input space 20a of the filter device 10, the amount of blood as the filtrate increases. Accordingly, the blood level in the container 40 gradually moves upward. Here, the lower end of the cutout recess 47 that is the overflow position, that is, the lower end of the outer opening 12 a is located above the filter surface of the filter element 21. Therefore, even if the blood as the filtrate gradually increases, the blood rises above the filter element 21 before the blood overflows from the container 40 through the passage 12, so that the user of the filter device 10 can use the filter element. The filtering operation can be stopped by visually observing the blood on 21. That is, the filter element 21 forms a liquid amount visualizing portion that enables visual observation of the amount of blood before blood as filtrate overflows from the container 40 through the passage 12.
As mentioned above, according to this embodiment explained in full detail, the following outstanding effects are acquired.

  A filtering device 10 for filtering an object to be filtered such as blood sucked from the body is used for filtering a container 40 for storing blood as a filtrate and a mixture of blood and thrombus as an object to be filtered. And a filter body 20 that has a filter element 21 and can be assembled to the upper portion of the container 40. The container 40 has a recess 46 as a passage forming part that forms the passage 12 for discharging the blood stored in the container 40 in a state where the filter body 20 is assembled to the container 40. In this case, since the filter body 20 has the recess 46 that forms the passage 12 for discharging blood in a state where the filter body 20 is assembled to the container 40, the blood is discharged without removing the filter body 20 from the container 40. It is possible and convenient. When filtering an object to be filtered such as blood, the filtering instrument 10 takes a substantially horizontal filtering posture. When discharging the filtrate, the filtering device 10 takes a discharging posture inclined with respect to the filtering posture. That is, the filtration device 10 can discharge the filtrate only by taking an inclined discharge posture. Moreover, it is also possible to remove the filter main body 20 from the container 40 and discharge the blood, and the filtrate can be discharged from the container 40 in an appropriate manner depending on the situation. Even when the filter body 20 is detached from the container 40 and the filtrate is discharged, the recess 46 forms the passage 12 for discharging blood, so that blood can be discharged suitably.

  The filtration device 10 has a filter element 21 as a liquid amount visualizing portion that enables visual observation of the amount of blood before blood as filtrate overflows from the container 40 through the passage 12. In this case, the amount of blood can be visually observed before the blood overflows by visually observing the filter element 21 as the liquid amount visualizing part. Therefore, it is possible to reduce the risk that the blood is inadvertently overflowed by excessively putting a mixture of blood and thrombus as an object to be filtered in the filtration device 10.

  The filter element 21 forms a filter surface, and the recess 46 as a passage forming portion has an overflow position where blood as a filtrate overflows from the container 40, and the overflow position is located above the filter surface. The amount viewing part is formed. In this case, since the overflow position is located above the filter surface, the blood comes out on the filter element 21 before the blood overflows from the container 40. Therefore, the filter element 21 functions as a liquid amount visualizing part, and the risk of blood overflowing carelessly can be reduced.

  The filter main body 20 has a mounting wall as a restraining portion that suppresses blood from being discharged from the filter element 21 when the blood stored in the container 40 is discharged in a state where the filter main body 20 is assembled to the container 40. 31 and an inclined wall portion 35. In this case, since the filter body 20 has the attachment wall 31 and the inclined wall part 35 as a restraining part that restrains blood from being discharged from the filter element 21, the filter body 20 is attached to the container 40. When blood is discharged, the risk of blood spilling from the filter element 21 side can be reduced.

  The filter main body 20 has a plurality of input spaces 20 a divided by a partition wall 36 in the present embodiment. For this reason, when thrombus suction is performed a plurality of times, the thrombus as the filtrate can be separated for each suction by putting the material to be filtered into another input space 20a for each suction.

  In the vicinity of the passage 12, a distance D <b> 1 from a connection portion between the attachment wall 31 of the filter body 20 and the inclined wall portion 35 to a connection portion between the lower end portion of the recess 46 of the container 40 and the side wall portion 44 is the side wall portion of the filter body 20. The distance D <b> 2 from the connection portion between the inclined wall portion 35 and the inclined wall portion 35 to the connection portion between the cutout concave portion 47 and the concave portion 48 of the container 40 is larger. In this case, the distance D1 is larger than D2, and when blood is discharged from the container 40, the blood can easily pass through the portion corresponding to the distance D1, and the blood can be discharged well.

  Due to the fitting force between the side wall portion 34 of the frame body 30 and the side wall portion 44 of the container 40, the container 40 is not detached even when only the frame body 30 is lifted. That is, the filter main body 20 and the container 40 are assembled by fitting so that the container 40 is not detached even if only the filter main body 20 is lifted. In this case, even if only the filter main body 20 is lifted carelessly, the filter main body 20 is not detached from the container 40, and the filtration instrument 10 can be easily handled.

  The side wall 34 of the filter main body 20 extends substantially vertically, but is slightly inclined so that the lower end is closer to the center of the frame body 30 than the upper end. The side wall upper portion 44a of the container 40 extends substantially vertically, but is slightly inclined so that the lower end is closer to the center of the container 40 than the upper end. That is, when the filter main body 20 and the container 40 are assembled, the respective portions that come into contact with each other extend substantially vertically and are inclined so that the lower end is closer to the center of the filtration device 10 than the upper end. In this case, even if there is a slight dimensional error between the filter main body 20 and the container 40 or manufacturing variations, the filter main body 20 can be fitted into the container 40 satisfactorily.

  The outer edge portion 33 of the frame body 30 extends outward from the upper edge portion 43 of the container 40. That is, in a state where the filter main body 20 is assembled to the container 40, the filter main body 20 has the outer edge portion 33 as an extending portion extending outward from the uppermost portion of the container 40. In this case, the user can easily remove the filter body 20 from the container 40 by holding the outer edge portion 33 by hand.

  The overhanging portion 45 of the container 40 includes a lateral overhanging portion 45b that extends outward from the lower end of the vertical overhanging portion 45a. That is, the container 40 includes a laterally extending portion 45b extending outward from the container 40. In this case, the filter body 20 can be easily detached from the container 40 by pressing the laterally extending portion 45b with a hand.

[Second Embodiment]
In the present embodiment, the configuration of the filtration device 50 is different from that of the first embodiment. Hereinafter, the configuration of the filtration instrument 50 will be described with reference to FIGS. 3 (a) to 3 (c) and FIGS. 4 (a) and 4 (b). Note that the description of the same points as in the first embodiment will be omitted as appropriate. 3A is a perspective view showing the filter device 50, FIG. 3B is a perspective view showing the filter body 60, and FIG. 3C is a perspective view showing the container 80. FIG. FIG. 4A is a cross-sectional view showing the filtration device 50 in the filtration posture, and FIG. 4B is a cross-sectional view showing the filtration device 50 in the housed state.

  As shown in FIG. 3A, the filtration instrument 50 includes a filter body 60 and a container 80. The filter main body 60 is formed so as to be attachable to the upper portion of the container 80, and filters an object to be filtered such as a mixture of blood and a thrombus. The container 80 contains a filtrate such as blood.

  As shown in FIG. 3B, the filter main body 60 includes a plurality of, in the present embodiment, two filter elements 61 and a frame body 70 to which the filter elements 61 are attached. The filter element 61 formed from a mesh forms a flat filter surface.

  As shown in FIGS. 3B and 4A, the frame body 70 is formed so that the filter element 61 is fixed and the frame body 70 itself is fixed to the container 80. The frame body 70 includes an attachment wall 71 to which the filter element 61 is attached, and a peripheral wall 72 that is located around the attachment wall 71 and forms a part other than the attachment wall 71 in the frame body 70. A filter element 61 is attached to the mounting wall 71.

  The peripheral wall 72 includes an outer edge portion 73, a side wall portion 74, and a partition wall 76. The outer edge portion 73 has a flange shape or a bowl shape, and forms a peripheral edge portion of the frame body 70 at a lower portion of the frame body 70. The outer edge portion 73 has a hanging portion 73a that extends downward in a predetermined region of the outer peripheral edge thereof. In the outer peripheral edge of the outer edge portion 73, a region where the hanging portion 73a is not provided is a discharge port corresponding portion 73b corresponding to a discharge port portion 85 to be described later. The discharge port corresponding part 73 b is provided at two locations that are symmetrically located on the outer peripheral edge of the outer edge part 73.

  The side wall portion 74 extends upward between the mounting wall 71 and the outer edge portion 73. The sidewall portion 74 includes a sidewall portion upper portion 74a, a sidewall portion inner portion 74b extending from the inner periphery of the sidewall portion upper portion 74a to the mounting wall 71, and a sidewall portion outer portion 74c extending from the outer periphery of the sidewall portion upper portion 74a to the outer edge portion 73. Is provided. The side wall portion inner portion 74 b extending in the substantially vertical direction is slightly inclined so that the lower end is closer to the center of the frame body 70 than the upper end. The side wall portion outer portion 74 c extending in the substantially vertical direction is slightly inclined such that the lower end is farther from the center of the frame body 70 than the upper end.

  The partition wall 76 is provided so as to divide the filter main body 60 into a plurality of regions, in this embodiment, two regions. The upper part of the partition wall 76 is located on the same plane as the side wall part upper part 74a. A space surrounded by the filter element 61, the attachment wall 71, the side wall portion 74, and the partition wall 76 forms an input space 60a into which an object to be filtered is input. The filter main body 60 has a plurality of input spaces 60a in the present embodiment partitioned by a partition wall 76, and one filter element 61 is provided in each input space 60a. . The volume of the input space 60a is set on the assumption of the amount of the filtering object that is input at a time so that the filtering object does not overflow.

  As shown in FIGS. 3C and 4A, the container 80 includes a bottom wall 81 and a peripheral wall 82 that is located around the bottom wall 81 and constitutes a part other than the bottom wall 81 in the container 80. Prepare. The peripheral wall 82 includes an upper edge portion 83, a side wall portion 84, and a discharge port portion 85 as a passage forming portion. The side wall 84 extends substantially downward from the inner edge of the upper edge 83, and is slightly inclined so that the lower end is closer to the center of the container 80 than the upper end.

  The discharge port portion 85 protrudes outward from the side wall portion 84. The discharge port portion 85 is formed in the upper portion of the discharge port 85 and has an opening portion 85 a that opens toward the outside of the container 80. Furthermore, the discharge port portion 85 has a substantially horizontal stepped portion 85b that is visible from above. The discharge port portion 85 forms a passage 52 for discharging the filtrate stored in the container 80. The opening 85a is an overflow position where the filtrate overflows from the container 80, and the liquid level of the filtrate in the container 80 is above the opening 85a when the filtration device 50 is in the filtering posture. The filtrate overflows.

  The container 80 forms a storage space 80a for storing the filtrate. Specifically, a space surrounded by the bottom wall 81 and the side wall 84 forms an accommodation space 80a. The volume of the container 80, that is, the volume of the storage space 80a is set so as to be able to store an amount twice as much as the amount of the material to be filtered put into the input space 60a at a time.

  In the filtration instrument 50, the material and manufacturing method of the filter main body 60 and the container 80 are the same as those in the first embodiment.

  With reference to Fig.3 (a) and FIG.4 (a), the filtration instrument 50 in the filtration attitude | position with which the filter main body 60 was assembled | attached to the container 80 is demonstrated. By placing the filter body 60 on the container 80, the filter body 60 can be assembled to the upper part of the container 80. At this time, any one of the two filter main bodies 60 and the discharge port corresponding portion 73 b are assembled so as to correspond to the discharge port portion 85 of the container 80.

  In the present embodiment, unlike the first embodiment, the filter main body 60 is placed on the container 80. Specifically, the inner diameter (virtual inner diameter) of the hanging portion 73 a of the filter body 60 is slightly larger than the outer diameter (virtual outer diameter) of the upper edge portion 83 of the container 80. Therefore, the filter body 60 is detached from the container 80 by lifting only the filter body 60.

  In a state where the filter main body 60 is assembled to the container 80, a passage 52 for discharging the filtrate in the container 80, that is, in the storage space 80 a, is provided between the filter main body 60 and the container 80. Is formed. The passage 52 has an outer opening 52a that opens toward the outside of the accommodation space 80a. The outer opening 52 a is formed by the opening 85 a of the discharge port 85.

  When the filtering instrument 50 is in the filtering posture, the opening 85 a of the discharge port 85, that is, the outer opening 52 a of the passage 52 is located at substantially the same height as the filter surface of the filter element 61. The step portion 85 b of the discharge port portion 85 is located below the filter surface of the filter element 61.

  Next, the filter device 50 in the stored state will be described. When the filter device 50 is stored in a package or the like before use, it is in a more compact storage state as shown in FIG. The filter device 50 in the storage state is such that the filter body 60 of the filter device 50 in use is turned upside down and the side wall 74 of the filter body 60 is stored in the storage space 80 a of the container 80. At this time, the input space 60a of the filter body 60 is included in the accommodation space 80a of the container 80, and the filter device 50 is compact as a whole.

Next, the usage method of the filtration instrument 50 is demonstrated.
The filtration device 50 housed in the package is in a housed state as shown in FIG. First, in order to use the filter device 50, the filter body 60 is turned upside down so that one of the two filter body 60 has the discharge port corresponding portion 73b corresponding to the discharge port portion 85 of the container 80. The filter main body 60 is assembled to the container 80, and the filtering posture shown in FIG. At this time, the filter main body 60 is prevented from moving with respect to the container 80 by the hanging portion 73 a of the filter main body 60. That is, the drooping portion 73a of the filter body 60 surrounds the upper edge portion 83 of the container 80, and the drooping portion 73a and the upper edge portion 83 are in contact with each other even if the filter body 60 attempts to move laterally with respect to the container 80. And not to move. Thereafter, using a suction catheter and a syringe, a filtering operation is performed as in the first embodiment.

  Similarly to the first embodiment, the blood as the filtrate stored in the storage space 80a of the container 80 by the filtering operation is also in a state where the filter body 60 is assembled to the container 80, or the filter body 60 is mounted in the container 80. The blood disposal operation can be performed by setting the filtering device 50 to the discharging posture in a state where the filtering device 50 is detached from the blood vessel. In the blood discarding operation, in the filtration instrument 50, the attachment wall 71 and the side wall portion 74 function as a suppression portion that suppresses the discharge of filtrate such as blood from the filter element 61.

  In the filtration instrument 50 of this embodiment, the amount of the filtrate in the container 80 can be confirmed by visually observing the discharge port portion 85 from above during the filtration operation. This will be described below.

  In the filtering posture, the opening 85 a of the discharge port 85 opens toward the outside of the container 80 and is visible from above the filtering device 50. Therefore, the filtration operation is continued, and when the blood level as the filtrate in the container 80 reaches the upper part of the container 80, the user recognizes the amount of blood by observing the opening 85a of the discharge port 85. can do. That is, the opening 85a forms a liquid amount visualizing portion that allows the amount of blood to be visually observed before the blood overflows from the container 80 through the passage 52. For this reason, the user can stop the filtration operation before the blood overflows.

  Furthermore, in the filtering posture, the stepped portion 85 b of the discharge port portion 85 is visible from above the filtering device 50. Therefore, when the filtration operation is continued and the level of the blood as the filtrate in the container 80 reaches the stepped portion 85b, the user visually observes the stepped portion 85b, so that the amount of blood in the container 80 becomes a predetermined amount. Recognize that the amount has been reached.

  As mentioned above, according to this embodiment explained in full detail, the following outstanding effects are acquired. Note that description of effects similar to those of the first embodiment will be omitted.

  The discharge port portion 85 as the passage forming portion has an opening portion 85a that opens toward the outside of the container 80. The opening portion 85a is visible from above the filtration device 50, and the opening portion 85a is a liquid amount visualizing portion. Form. In this case, since the opening 85a can be viewed from above, the blood that has reached the vicinity of the opening 85a before the blood overflows from the opening 85a can be viewed. Therefore, the opening 85a or the discharge port 85 in the vicinity of the opening 85a functions as a liquid amount visualizing part, and the risk of blood overflowing carelessly can be reduced.

  The discharge port portion 85 has a stepped portion 85 b that is visible from above the filtration device 50. In this case, by visually observing that the blood has reached the stepped portion 85b, it can be easily recognized that the blood has reached a predetermined amount.

  The filter main body 60 has an input space 60a into which an object to be filtered is input, the container 80 has an accommodating space 80a for accommodating blood as a filtrate, and the filtering device 50 has an input space 60a that is the capacity of the accommodating space 80a. There is a use state located above, and a storage state in which the input space 60a and the storage space 80a at least partially overlap. In this case, when the filter device 50 is used, the filter body 60 is assembled to the container 80 so that the input space 60a is located above the storage space 80a, so that the filter device 50 is in a usable state in which the filter device 50 can be filtered. Can do. On the other hand, when the filter device 50 is stored, the filter device 50 as a whole is stored in a compact state by combining the filter body 60 and the container 80 so that the input space 60a and the storage space 80a overlap at least partially. Can be.

  The filter main body 60 has a side wall portion 74 that forms the input space 60a. The side wall portion 74 is positioned above the container 80 in the used state, and the side wall portion 74 is positioned in the container 80 in the stored state. In this case, in use, the side wall portion 74 that forms the input space 60 a is positioned above the container 80, so that the side wall portion 74 forms the input space 60 a without reducing the accommodation space 80 a of the container 80. Therefore, both the input space 60a and the accommodation space 80a can be made relatively large, and many objects to be filtered can be filtered. Moreover, in the storage state, since the side wall part 74 was located in the container 80, the filtration instrument 50 can be stored in a compact state.

  The filter main body 60 has a hanging portion 73a and a discharge port corresponding portion 73b. By assembling the filter main body 60 so that the discharge port corresponding portion 73 b corresponds to the discharge port portion 85, the filter main body 60 is prevented from moving with respect to the container 80. That is, the drooping portion 73a functions as a fixed portion that the filter body 60 fixes to the container 80 or a movement suppressing portion that suppresses movement. For this reason, it can be set as the use condition which assembled | attached the filter main body 60 to the container 80 stably.

[Other Embodiments]
(1) In 2nd Embodiment, although the discharge port part 85 was provided with the one level | step-difference part 85b, you may change this. The discharge port portion 85 as the passage forming portion may have a plurality of step portions that are visible from above the filtration device 50. For example, in the container 80 of the filtration device 50, as shown in FIG. 4C, the discharge port portion 85 includes a first step portion 85c and a second step portion 85d provided above the first step portion 85c. And may be provided. In the filtering posture of the filtering device 50, these two stepped portions 85c and 85d are visible from above. Therefore, the user visually recognizes that the filtrate in the container 80 has reached the first step portion 85c, thereby recognizing that the amount of the filtrate has reached the first predetermined amount, and the filtrate becomes the second step portion. By visually observing that it has reached 85d, it can be recognized that the amount of the filtrate has reached the second predetermined amount. That is, the user can recognize the amount of the filtrate stepwise.

  At this time, the first step portion 85c and the second step portion 85d may have a liquid amount display indicating the amount of the filtrate. For example, a liquid amount display such as “70%” or “70 ml” may be provided on the first step portion 85c, and a liquid amount display such as “100%” or “100 ml” may be provided on the second step portion 85d.

  Moreover, as shown in FIG.4 (c), the discharge port part 85 may have the support part 85e. The discharge port portion 85 protrudes laterally from the container 80, and the discharge port portion 85 has a support portion 85 e, and at least a part of the bottom of the support portion 85 e is substantially flush with the bottom wall 81 of the container 80. It is in. For example, the support portion 85 e can be formed by a rib having a predetermined thickness and extending in the vertical direction, and the bottom of the support portion 85 e is substantially flush with the bottom wall 81 of the container 80.

  Since the discharge port portion 85 protrudes laterally from the container 80, the filtrate can be suitably discharged. However, if the user inadvertently presses the discharge port portion 85 from above, there is a risk that the filter device 50 may be tilted or turned over. In this respect, since the discharge port portion 85 has the support portion 85e as described above, even if the user pushes the discharge port portion 85 from above, the support portion 85e pushes the discharge port portion 85. It is possible to reduce the possibility that the filtration device 50 is tilted or turned over.

  (2) The filtration devices 10 and 50 may include a lid that can be attached to the upper part of the filter main bodies 20 and 60. In this case, the lid can prevent foreign matters from entering the input spaces 20a and 60a.

  (3) In the above embodiment, the filter main bodies 20 and 60 of the filtration devices 10 and 50 have the two input spaces 20a and 60a and the two filter elements 21 and 61. Good. The filtering device 10, 50 may have one input space 20a, 60a and one filter element 21, 61, or three or more input spaces 20a, 60a and three or more filter elements 21, 61. You may have. In this case, the partition walls 36 and 76 may be eliminated or the configuration of the partition walls 36 and 76 may be changed according to the number of the input spaces 20a and 60a and the filter elements 21 and 61.

  (4) In the above embodiment, the containers 40, 80 of the filtration devices 10, 50 have one storage space 40a, 80a. Instead, the containers 40, 80 have a plurality of storage spaces 40a, 80a. You may have. For example, the containers 40 and 80 may have partition walls that partition the storage spaces 40a and 80a, and may have the same number of storage spaces 40a and 80a as the input spaces 20a and 60a. In this case, the containers 40 and 80 may be provided with the recesses 46 or the discharge port portions 85 as a plurality of passage forming portions so that one passage 12 and 52 is formed for each of the accommodation spaces 40a and 80a.

(5) In the filtration device 50 of the second embodiment, the shape of the discharge port portion 85 may be changed. For example, the tip of the discharge port 85 may be more rounded, and the shape of the opening 85a may be semicircular.
(About other inventions extracted from the disclosure scope of this specification)

Hereinafter, inventions that can be extracted in addition to the inventions described in the means column for solving the problems within the disclosure scope of the present specification will be described while showing effects and the like as necessary.
(Supplementary note 1) A filtration device for filtering an object to be filtered such as blood sucked from inside the body,
A filter element for filtering an object to be filtered;
A storage space for storing the filtrate;
A passage forming portion that forms a passage for discharging filtrate from the storage space;
With
A filtration device characterized in that a liquid amount visualizing part is provided which allows the amount of filtrate to be visually observed before the filtrate overflows from the filtration device through the passage.

  Conventionally, in a filtering device in which a passage for discharging filtrate is formed, if the material to be filtered is excessively filtered, the filtrate sometimes overflows from the filtering device. In this case, there is a concern that the surrounding area is soiled by the overflowing filtrate. If it is set as this point and said structure, the quantity of a filtrate can be visually observed before a filtrate overflows by visually observing a liquid quantity visual observation part. Therefore, it is possible to reduce the possibility that the filtrate will overflow unnecessarily by excessively putting an object to be filtered into the filtration device.

(Appendix 2) The filter element forms a filter surface,
The passage forming portion has an overflow position where the filtrate overflows from the filtration device,
The overflow position is located above the filter surface,
The filtration device according to supplementary note 1, wherein the filter element forms the liquid amount visual observation part.

  In this case, since the overflow position is located above the filter surface, the filtrate comes out on the filter element before the filtrate overflows from the filter device. Therefore, a filter element functions as a liquid amount visual observation part, and it can reduce a possibility that a filtrate will overflow accidentally.

  (Additional remark 3) The said channel | path formation part has an opening part opened toward the outer side of the said container, the said opening part can be visually observed from the upper direction of a filtration instrument, and the said opening part forms the said liquid amount visual observation part The filtration device as set forth in Appendix 2, wherein:

  In this case, since the opening can be viewed from above, the filtrate reaching the vicinity of the opening before the filtrate overflows from the opening can be viewed. Therefore, the opening or the passage in the vicinity of the opening functions as a liquid amount visualizing part, and it is possible to reduce the possibility that the filtrate overflows carelessly.

  (Additional remark 4) The said channel | path formation part has a level | step-difference part visible from the upper direction of a filtration apparatus, The filtration apparatus of Additional remark 3 characterized by the above-mentioned.

  In this case, by visually observing that the filtrate has reached the stepped portion, it can be easily recognized that the filtrate has reached a predetermined amount.

(Appendix 5) A filtration device for filtering an object to be filtered such as blood sucked from inside the body,
A filter element for filtering an object to be filtered;
A storage space for storing the filtrate;
A passage forming portion that forms a passage for discharging filtrate from the storage space;
With
A filtration device, comprising: a deterring unit that prevents the filtrate from being discharged from the filter element when the filtrate stored in the storage space is discharged.

  Conventionally, in a filtration device in which a passage for discharging the filtrate is formed, when trying to discharge the filtrate from the passage, the filtration device is mistakenly tilted excessively, for example, so that the filtrate is mistakenly filtered from the filter element side. May be discharged. In this case, there is a concern that the filtrate discharged from the filter element side may be spilled or the filtrate on the filter element may be washed away by the filtrate discharged from the filter element side. In this regard, since the suppression unit that suppresses the discharge of the filtrate from the filter element is provided, the risk of the filtrate spilling from the filter element side can be reduced when the filtrate is discharged.

  DESCRIPTION OF SYMBOLS 10,50 ... Filtration instrument, 12,52 ... Passage, 20,60 ... Filter main body, 21, 61 ... Filter element, 31, 71 ... Mounting wall as suppression part, 35 ... Inclined wall part as suppression part, 40, DESCRIPTION OF SYMBOLS 80 ... Container, 46 ... Recessed part as passage formation part, 74 ... Side wall part as suppression part, 85 ... Discharge port part as passage formation part, 85a ... Opening part, 85b, 85c, 85d ... Step part

Claims (6)

A filtering device for filtering an object to be filtered such as blood sucked from the body,
A container for containing the filtrate;
A filter main body having a filter element for filtering an object to be filtered, and capable of being assembled to the upper part of the container,
Before SL container, in a state in which the filter body is assembled to the container, with which have a passage forming portion for forming a passage for discharging the filtrate is stored in the container, is inclined from the filtered position The filtering device is characterized in that the filtrate is discharged from the container through the passage by adopting a discharging posture . A filtering device for filtering an object to be filtered such as blood sucked from the body,
A container for containing the filtrate;
A filter main body having a filter element for filtering an object to be filtered, and capable of being assembled to the upper part of the container,
The container has a passage forming portion that forms a passage for discharging the filtrate stored in the container in a state where the filter main body is assembled to the container.
A filtration device comprising a liquid amount visualizing unit for visually confirming the amount of the filtrate before the filtrate overflows from the container through the passage. The filter element forms a filter face;
The passage forming portion has an overflow position where the filtrate overflows from the container;
The overflow position is located above the filter surface,
The filtration device according to claim 2, wherein the filter element forms the liquid amount viewing portion. The passage forming portion has an opening that opens toward the outside of the container,
The opening is visible from above the filter device,
The filtration device according to claim 2, wherein the opening forms the liquid amount visual observation part.   The filtration device according to claim 4, wherein the passage forming portion has a stepped portion that is visible from above the filtration device.   The filter main body has a suppression unit that suppresses discharge of the filtrate from the filter element when discharging the filtrate stored in the container in a state where the filter main body is assembled to the container. The filtration device according to any one of claims 1 to 5.

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