Inspection device and peritoneal dialysis device

Abstract

To detect a prescribed component in waste fluid from peritoneal dialysis to help determine a symptom of a patient.SOLUTION: A peritoneal dialyzer 10 includes a peritoneal dialysis device 12 and an inspection device 14. The inspection device 14 has a connector part 36 and a device body 38. The connector part 36 is attachable to a dialysis connector 20 but not connectable to a connection connector 508. The device body 38 includes a waste fluid flow path 44 in which waste fluid introduced from the connector part 36 flows. The device body 38 has a detection part 50 that detects a prescribed component in the waste fluid flowing in the waste fluid flow path 44.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an inspection device and a peritoneal dialysis device.

Background Art

[0002] Patent Document 1 discloses a peritoneal dialysis device for collecting used dialysate in the abdominal cavity and injecting new dialysate into the abdominal cavity. This peritoneal dialysis device includes a dialysis bag, a connection tube, a dialysis connector, and a drainage bag. The dialysis bag contains dialysate. The connection tube connects the dialysis bag and the dialysis connector to each other and connects the dialysis connector and the drainage bag to each other. The dialysis connector is detachable from the connection connector of the catheter indwelling in the peritoneum. The drainage bag collects the used dialysate (drainage) discharged from the abdominal cavity through the catheter.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, the drainage of peritoneal dialysis contains waste products in the blood and the like. Therefore, if a predetermined component in the drainage of peritoneal dialysis can be detected, it can be used to know the patient's symptoms.

[0005] An object of the present invention is to solve the above-described problems.

Means for Solving the Problems

[0006] One aspect of the present invention is an inspection device for inspecting drained fluid, which is used dialysis fluid recovered from a peritoneal dialysis device via a catheter from within the abdominal cavity. The peritoneal dialysis device includes a dialysis connector that is detachable from the connection connector of the catheter. The inspection device is attachable to the dialysis connector and includes a connector portion that cannot be attached to the connection connector, and a device body having a drained fluid flow path through which the drained fluid introduced from the connector portion flows. The device body has a detection unit that detects a predetermined component in the drained fluid flowing through the drained fluid flow path.

[0007] Another aspect of the present invention is a peritoneal dialysis device that recovers drained fluid, which is used dialysis fluid, from within the abdominal cavity via a catheter, and an inspection device that inspects the drained fluid within the peritoneal dialysis device. The peritoneal dialysis device has a dialysis connector that is detachable from the connection connector of the catheter, and the inspection device is the above-described inspection device. It is a peritoneal dialysis apparatus.

Advantages of the Invention

[0008] According to the present invention, after recovering peritoneal dialysis drained fluid from within the abdominal cavity via a catheter into a peritoneal dialysis device, the connector portion of the inspection device can be attached to the dialysis connector removed from the connection connector of the catheter. Thereby, the drained fluid within the peritoneal dialysis device can be caused to flow into the drained fluid flow path of the device body, and a predetermined component in the drained fluid flowing through the drained fluid flow path can be detected by the detection unit. Therefore, it becomes possible to know the patient's symptoms based on the detection result of the detection unit. Further, the connector portion is configured to be unable to be attached to the connection connector of the catheter. Therefore, the user does not accidentally attach the connector portion of the inspection device to the connection connector of the catheter. Accordingly, the risk of infection via the catheter from the inspection device can be reduced.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

DETAILED DESCRIPTION OF THE INVENTION

[0010] As shown in FIG. 1, the peritoneal dialysis device 10 according to an embodiment of the present invention includes a peritoneal dialysis device 12 and an inspection device 14. The peritoneal dialysis device 12 is used when replacing the used dialysis fluid in the abdominal cavity 502 of the patient 500 with a new dialysis fluid. Each of the peritoneal dialysis device 12 and the inspection device 14 is a disposable item that is discarded by one use.

[0011] The peritoneal dialysis device 12 includes a dialysis bag 16, a drainage bag 18, a dialysis connector 20, a connecting tube 22, a first clamp 24, and a second clamp 26. Before use of the peritoneal dialysis device 12, the dialysis bag 16 contains dialysis fluid. The drainage bag 18 is a bag for collecting drainage, which is the used dialysis fluid in the abdominal cavity 502. Therefore, before use of the peritoneal dialysis device 12, the inside of the drainage bag 18 is empty. Each of the dialysis bag 16 and the drainage bag 18 is formed in a bag shape, for example, by overlapping soft resin sheets and sealing the peripheral edges together.

[0012] The dialysis connector 20 is detachable from the connection connector 508 of the catheter 506 indwelling in the peritoneum 504 of the patient 500. The connection connector 508 is a male connector having a male thread portion. The dialysis connector 20 is a female connector having a female thread portion that screws into the male thread portion. However, when the connection connector 508 is a female connector, the dialysis connector 20 may be a male connector. Further, the connection connector 508 and the dialysis connector 20 are not limited to screw fitting, and an appropriate configuration may be adopted.

[0013] The connecting tube 22 connects the dialysis bag 16 and the dialysis connector 20 to each other and connects the drainage bag 18 and the dialysis connector 20 to each other. The connecting tube 22 includes a first tube 28, a second tube 30, a branch portion 32, and a third tube 34.

[0014] The first tube 28 connects the dialysis bag 16 and the branch portion 32 to each other. The second tube 30 connects the drainage bag 18 and the branch portion 32 to each other. The third tube 34 connects the branch portion 32 and the dialysis connector 20 to each other.

[0015] The first clamp 24 is attached to the first tube 28. The first clamp 24 opens and closes the inner hole of the first tube 28. The second clamp 26 is attached to the second tube 30. The second clamp 26 opens and closes the inner hole of the second tube 30.

[0016] As shown in FIGS. 1 and 2, the inspection device 14 includes a connector portion 36 and a device main body 38. The connector portion 36 is configured to be detachable from the dialysis connector 20 of the peritoneal dialysis device 12. The connector portion 36 is a male connector having a male screw portion 40 that is screwed into the female screw portion of the dialysis connector 20. The connector portion 36 is configured to be non - attachable to the connection connector 508 of the catheter 506. When the dialysis connector 20 is a male connector, the connector portion 36 may be a female connector. Also, the connector portion 36 and the dialysis connector 20 are not limited to screw fitting and may adopt an appropriate configuration.

[0017] In FIGS. 3 and 4, the connector portion 36 has an introduction hole 42 for introducing the drained liquid in the peritoneal dialysis device 12 (see FIG. 1). The introduction hole 42 opens in the direction of arrow X1. The introduction hole 42 communicates with the drained liquid flow path 44 of the device main body 38.

[0018] The device main body 38 has a protruding portion 46, a holding portion 48, a detecting portion 50, and a filter portion 52. The protruding portion 46 protrudes in the direction of arrow X2 from the end face of the connector portion 36 in the direction of arrow X2. The protruding portion 46 and the connector portion 36 are integrally formed of a resin material. The protruding portion 46 has a shape close to a triangular prism. The outer surface of the protruding portion 46 located in the direction of arrow Z1 has a flat surface 54. The flat surface 54 has a square - shaped recess 56. The protruding portion 46 has an intermediate flow path 58 that communicates with the introduction hole 42 (see FIG. 4). The intermediate flow path 58 opens at the bottom surface 60 of the recess 56.

[0019] The holding portion 48 is provided on the protruding portion 46 and holds the detecting portion 50. The holding portion 48 is an integrally - molded product made of resin. The holding portion 48 has a rectangular - parallelepiped shape. The holding portion 48 is fitted into the recess 56 in a liquid - tight manner. The holding portion 48 has a flat outer surface 62 that is exposed in the direction opposite to the bottom surface 60 of the recess 56 (the direction of arrow Z1). The holding portion 48 includes a detection flow path 64, an exhaust hole 66, and a filter arrangement portion 68. The detection flow path 64 communicates with the intermediate flow path 58 (see FIG. 4). The drained liquid flow path 44 has the intermediate flow path 58 and the detection flow path 64.

[0020] The exhaust hole 66 discharges the air inside the drain flow path 44 to the outside. The exhaust hole 66 communicates with the detection flow path 64. The exhaust hole 66 opens to the outer surface 62 of the holding portion 48. The filter arrangement portion 68 is located on the outer surface 62 of the holding portion 48. The filter arrangement portion 68 is an annular groove surrounding the opening of the exhaust hole 66.

[0021] The detection portion 50 is fixed to the wall surface constituting the detection flow path 64. That is, the detection portion 50 is disposed inside the holding portion 48. The detection portion 50 detects a predetermined component in the drain liquid flowing through the detection flow path 64. The detection portion 50 has a rectangular shape. The detection portion 50 extends in the direction of arrow X. The detection portion 50 is, for example, a test paper. The detection portion 50 includes a reagent portion 70 that reacts with a predetermined component of the drain liquid and changes in appearance. The detection portion 50 has a detection surface 72 that comes into contact with the drain liquid flowing through the detection flow path 64. The reagent portion 70 is provided on the detection surface 72.

[0022] The detection surface 72 is disposed parallel to the outer surface 62 of the holding portion 48. The detection surface 72 faces in the direction of arrow Z1. The holding portion 48 is configured to be transparent so that the reagent portion 70 can be visually recognized from the outside. However, the holding portion 48 may be configured to be translucent so that the reagent portion 70 can be visually recognized from the outside. Also, only a part of the holding portion 48 may be configured to be transparent or translucent. That is, the holding portion 48 may be configured such that only the portion facing the detection surface 72 of the holding portion 48 is configured to be transparent or translucent, and the other portions are configured to be opaque. That is, the holding portion 48 only needs to be configured such that the reagent portion 70 can be visually recognized from the outside.

[0023] The flow path height of the portion of the detection flow path 64 adjacent to the detection surface 72 in the direction of arrow Z1 is lower than the thickness of the detection portion 50. Specifically, it is preferably set to be 0.9 mm or more and 10 mm or less, and more preferably set to be 1.0 mm or more and 2.0 mm or less. In this case, even if the drain liquid is turbid, it is easy to visually recognize the detection surface 72 from the outside through the holding portion 48.

[0024] The predetermined component is, for example, a specific component that serves as an indicator for judging peritonitis. The specific component is a white blood cell component. The reagent part 70 changes its appearance according to the concentration of the specific component in the drainage fluid. The reagent part 70 reacts with the white blood cell component in the drainage fluid and changes color. Specifically, the reagent part 70 changes color when the concentration of the white blood cell component in the drainage fluid is equal to or higher than the reference value, and does not change color when the concentration of the white blood cell component in the drainage fluid is lower than the reference value. In this case, the user can easily determine whether there is a possibility of peritonitis by visually recognizing that the color of the reagent part 70 has changed. Examples of the material constituting the reagent part 70 include test paper using filter paper, etc.

[0025] The reagent part 70 may be configured to change its appearance by reacting with blood components other than white blood cells in the drainage fluid. Thereby, it is possible to know about blood diseases and the like with the inspection device 14. Also, the reagent part 70 may be configured to change its appearance by reacting with viruses or the like in the drainage fluid. In this case, it is possible to know whether the patient 500 is infected with a predetermined virus.

[0026] The reagent part 70 may be configured to change its shape (for example, dissolve) according to the concentration of the predetermined component in the drainage fluid. Also, the reagent part 70 may be configured such that information consisting of characters, figures, symbols, or a combination thereof is displayed according to the concentration of the predetermined component in the drainage fluid.

[0027] The detection part 50 may have a plurality of types of reagent parts 70. In this case, the plurality of types of reagent parts 70 react with different components in the drainage fluid.

[0028] The filter part 52 is liquid-tightly fixed to the filter arrangement part 68. The filter part 52 is configured in a disc shape. The filter part 52 permits the discharge of air to the outside from the exhaust hole 66. The filter part 52 prevents the outflow of the drainage fluid to the outside from the exhaust hole 66. Examples of the material constituting the filter part 52 include a fluororesin porous membrane, etc.

[0029] Next, a method of using the peritoneal dialysis device 10 according to the present embodiment will be described. The peritoneal dialysis device 10 is used when replacing the used dialysate in the peritoneum 504 with a new dialysate. First, as shown in FIG. 1, the user places the drainage bag 18 at a position lower than the abdominal cavity 502 and places the dialysis bag 16 at a position higher than the abdominal cavity 502. Subsequently, the dialysis connector 20 of the peritoneal dialysis device 10 is attached to the connection connector 508 of the catheter 506 indwelling in the peritoneum 504.

[0030] Thereafter, the second clamp 26 is operated to open the inner hole of the second tube 30. Note that the first clamp 24 closes the inner hole of the first tube 28. Then, the drainage, which is the used dialysate in the abdominal cavity 502, is collected into the drainage bag 18 through the catheter 506, the dialysis connector 20, the third tube 34, the branch portion 32, and the second tube 30. When the collection of the drainage of peritoneal dialysis into the drainage bag 18 is completed, the second clamp 26 is operated to close the inner hole of the second tube 30.

[0031] Subsequently, the first clamp 24 is operated to open the inner hole of the first tube 28. Then, the new dialysate in the dialysis bag 16 is injected into the abdominal cavity 502 through the first tube 28, the branch portion 32, the third tube 34, the dialysis connector 20, and the catheter 506. When the injection of the dialysate into the abdominal cavity 502 is completed, the dialysis connector 20 of the peritoneal dialysis device 10 is removed from the connection connector 508 of the catheter 506.

[0032] Next, as shown in FIG. 5, the connector portion 36 of the inspection device 14 is attached to the dialysis connector 20 of the peritoneal dialysis device 10. Also, the drainage bag 18 is placed above the dialysis connector 20. Thereafter, the second clamp 26 is operated to open the inner hole of the second tube 30. Then, the drainage in the drainage bag 18 flows into the introduction hole 42 of the inspection device 14 through the second tube 30, the branch portion 32, the third tube 34, and the dialysis connector 20.

[0033] The drainage fluid that has flowed into the introduction hole 42 flows through the drainage channel 44 while pushing the air present in the introduction hole 42 and the drainage channel 44. At this time, the air pushed by the drainage fluid passes through the filter section 52 and is exhausted to the outside through the exhaust hole 66. Thereby, the drainage fluid smoothly flows through the drainage channel 44.

[0034] In FIG. 4, the drainage fluid guided from the introduction hole 42 to the detection channel 64 via the intermediate channel 58 contacts the reagent section 70 (detection surface 72). At this time, for example, when the concentration of white blood cells in the drainage fluid is equal to or higher than the reference value, the reagent section 70 reacts with the white blood cells and the color of the reagent section 70 changes. Also, when the concentration of white blood cells in the drainage fluid is lower than the reference value, the color of the reagent section 70 does not change.

[0035] The user can easily know whether the color of the reagent section 70 has changed by visually recognizing the reagent section 70 through the holding section 48. In other words, the user can easily know that peritonitis is occurring by confirming that the color of the reagent section 70 has changed. Also, the user can easily know that peritonitis is not occurring by confirming that the color of the reagent section 70 has not changed.

[0036] The drainage fluid that has contacted the reagent section 70 flows toward the exhaust hole 66. Note that the drainage fluid does not pass through the filter section 52. When the inspection by the inspection device 14 is completed, the peritoneal dialysis device 12 and the inspection device 14 are discarded together.

[0037] This embodiment has the following effects.

[0038] According to this embodiment, after the drainage of peritoneal dialysis is collected from the abdominal cavity 502 into the peritoneal dialysis device 12 through the catheter 506, the connector portion 36 of the inspection device 14 can be attached to the dialysis connector 20 removed from the connection connector 508 of the catheter 506. Thereby, the drainage in the peritoneal dialysis device 12 can be made to flow through the drainage channel 44 of the device main body 38, and a predetermined component in the drainage flowing through the drainage channel 44 can be detected by the detection unit 50. Therefore, it becomes possible to know the symptoms of the patient 500 based on the detection result of the detection unit 50. Further, the connector portion 36 is configured to be unable to be attached to the connection connector 508 of the catheter 506. Therefore, the user does not accidentally attach the connector portion 36 of the inspection device 14 to the connection connector 508 of the catheter 506. Accordingly, the risk of infection from the inspection device 14 through the catheter 506 can be reduced.

[0039] The detection unit 50 includes a reagent unit 70 that reacts with a predetermined component in the drainage and whose appearance changes. The holding unit 48 holds the detection unit 50 so that the reagent unit 70 comes into contact with the drainage flowing through the drainage channel 44. Further, the holding unit 48 is configured to be able to visually recognize the reagent unit 70 from the outside.

[0040] According to such a configuration, by visually checking whether or not the appearance of the reagent unit 70 has changed, the symptoms of the patient 500 can be easily known.

[0041] The predetermined component is a specific component that serves as an index for determining peritonitis. The appearance of the reagent unit 70 changes according to the concentration of the specific component in the drainage.

[0042] According to such a configuration, by visually checking whether or not the appearance of the reagent unit 70 has changed, the symptoms of peritonitis can be easily known.

[0043] The drainage channel 44 includes a detection channel 64 formed in the holding unit 48. The detection unit 50 includes a detection surface 72 that comes into contact with the drainage flowing through the detection channel 64. The reagent unit 70 is provided on the detection surface 72. The holding unit 48 is configured to be transparent.

[0044] According to such a configuration, since the holding part 48 is configured to be transparent, the reagent part 70 provided on the inspection surface 72 can be easily visually recognized.

[0045] The device main body 38 has a protruding part 46 protruding from the connector part 36. The holding part 48 is attached to the protruding part 46. The drainage flow path 44 includes an intermediate flow path 58 formed in the protruding part 46 so that the drainage introduced from the connector part 36 is guided to the detection flow path 64.

[0046] According to such a configuration, since the holding part 48 is attached to the protruding part 46, the inspection device 14 can be made relatively compact.

[0047] A concave part 56 is formed on the flat surface 54 of the protruding part 46. The holding part 48 is fitted into the concave part 56 in a liquid-tight manner.

[0048] According to such a configuration, the inspection device 14 can be configured to be more compact.

[0049] The device main body 38 has an exhaust hole 66 and a filter part 52. The exhaust hole 66 discharges the air in the drainage flow path 44 to the outside. The filter part 52 permits the discharge of air from the exhaust hole 66 to the outside and blocks the outflow of drainage from the exhaust hole 66 to the outside.

[0050] According to such a configuration, since the air in the drainage flow path 44 can be discharged from the exhaust hole 66 to the outside, the drainage can flow smoothly in the drainage flow path 44. Also, since the filter part 52 is provided, it is possible to prevent the drainage from flowing out to the outside from the exhaust hole 66.

[0051] The connector part 36 is a male connector that can be attached to the dialysis connector 20.

[0052] According to such a configuration, with a simple configuration, it is possible to obtain a connector part 36 that can be attached to the dialysis connector 20 and cannot be attached to the connection connector 508.

[0053] (First Modified Example) Next, the inspection device 80 according to the first modified example will be described. In the inspection device 80 according to this modified example, the same components as those of the above-described inspection device 14 are denoted by the same reference numerals, and detailed descriptions thereof are omitted. Also, in the inspection device 80 according to this modified example, the same components as those of the above-described inspection device 14 have the same effects.

[0054] As shown in FIGS. 6 and 7, the inspection device 80 includes a connector portion 36 and a device main body 82. The device main body 82 has a holding portion 84, a detection portion 50, a tube 86, and an exhaust portion 88.

[0055] The holding portion 84 is provided on the connector portion 36 and holds the detection portion 50. The holding portion 84 includes a holding main body 90 and a connecting portion 92. The holding main body 90 protrudes in the arrow X2 direction from the end surface of the connector portion 36 in the arrow X2 direction. The connector portion 36 and the holding main body 90 are integrally formed of a resin material. In FIG. 6, the holding main body 90 is formed wide. In other words, the width of the holding main body 90 along the arrow Y direction is wider than the height of the holding main body 90 along the arrow Z direction. As shown in FIGS. 6 and 7, a connecting recess 94 is formed in the protruding end surface (the end surface in the arrow X2 direction) of the holding main body 90.

[0056] The holding main body 90 includes an introduction communication path 96 and a detection flow path 98. The introduction communication path 96 extends in the arrow X2 direction from the introduction hole 42. In FIG. 7, the flow path height (the height in the arrow Z direction) of the introduction communication path 96 gradually decreases in the arrow X2 direction. The detection flow path 98 extends in the arrow X2 direction from the introduction communication path 96. The flow path height (the height in the arrow Z direction) of the detection flow path 98 is substantially constant over the entire length in the arrow X direction.

[0057] The detection unit 50 is disposed in the detection flow path 98. The detection unit 50 extends in the direction of arrow X. The detection surface 72 of the detection unit 50 faces in the direction of arrow Z1. The detection surface 72 contacts the drain liquid flowing through the detection flow path 98. The channel height of the portion of the detection flow path 98 adjacent to the detection surface 72 in the direction of arrow Z1 is lower than the thickness of the detection unit 50. Specifically, the channel height is set in the same manner as the inspection device 14 described above.

[0058] In FIGS. 6 and 7, the holding body 90 is configured to be transparent so that the reagent unit 70 can be visually recognized from the outside. However, the holding body 90 may be configured to be translucent so that the reagent unit 70 can be visually recognized from the outside. Also, only a part of the holding body 90 may be configured to be transparent or translucent so that the reagent unit 70 can be visually recognized from the outside.

[0059] The connecting portion 92 is fitted in a liquid-tight manner into the connecting recess 94. The connecting portion 92 has a tube communication hole 100 that communicates with the detection flow path 98. In FIG. 7, the tube communication hole 100 includes a portion where the channel height (height in the direction of arrow Z) gradually increases from the end of the tube communication hole 100 in the direction of arrow X1 toward the direction of arrow X2.

[0060] One end of the tube 86 is connected to the connecting portion 92 in a liquid-tight manner. The inner hole 102 of the tube 86 communicates with the detection flow path 98 via the tube communication hole 100. The length, inner diameter, outer diameter, cross-sectional shape, etc. of the tube 86 can be set as appropriate.

[0061] The exhaust portion 88 has an exhaust communication hole 104 that communicates with the inner hole 102 of the tube 86. The exhaust portion 88 includes a first exhaust cover portion 106, a second exhaust cover portion 108, and a filter portion 52. The first exhaust cover portion 106 includes an exhaust cover main body 110, an exhaust connection portion 112, and a support protrusion 114. The exhaust cover main body 110 is formed in an annular shape. The exhaust connection portion 112 protrudes from the central portion of the exhaust cover main body 110. The exhaust connection portion 112 is connected to the other end of the tube 86 in a liquid-tight manner. The support protrusion 114 protrudes from the exhaust cover main body 110 in the direction of arrow X2. The support protrusion 114 is formed in an annular shape.

[0062] The second exhaust cover part 108 is formed in an annular shape. The peripheral edge of the second exhaust cover part 108 is connected to the peripheral edge of the exhaust cover main body 110. The second exhaust cover part 108 includes an exhaust hole 116 and a filter arrangement part 118. The exhaust hole 116 is formed in the central part of the second exhaust cover part 108. The exhaust hole 116 communicates with the exhaust communication hole 104. The filter arrangement part 118 is located on the surface of the second exhaust cover part 108 in the direction of arrow X1. The filter arrangement part 118 is an annular groove surrounding the exhaust hole 116.

[0063] The filter part 52 is arranged in the filter arrangement part 118 so as to cover the exhaust hole 116. The filter part 52 is clamped by the support protrusion 114 and the second exhaust cover part 108.

[0064] The device main body 82 has a drain flow path 120 through which drain liquid flows. The drain flow path 120 includes an introduction communication hole 96, a detection flow path 98, a tube communication hole 100, the inner hole 102 of the tube 86, and the exhaust communication hole 104.

[0065] In the inspection device 80, the holding part 84 is provided on the connector part 36. The device main body 82 has a tube 86 connected to the holding part 84. When the drain liquid flows through the detection flow path 98, the air in the detection flow path 98 is pushed out into the inner hole 102 of the tube 86.

[0066] According to such a configuration, the drain liquid can flow smoothly in the detection flow path 98. Thereby, the drain liquid can be efficiently brought into contact with the detection surface 72.

[0067] (Second Modification Example) Next, the inspection device 130 according to the second modification example will be described. In the inspection device 130 according to this modification example, the same components as those of the above-described inspection devices 14 and 80 are denoted by the same reference numerals, and the detailed description thereof is omitted. Also, in the inspection device 130 according to this modification example, the same components as those of the above-described inspection devices 14 and 80 have the same effects.

[0068] As shown in FIG. 8, the inspection device 130 includes a connector portion 36 and a device main body 132. The device main body 132 has a holding portion 84, a detection portion 50, a tube 86, a bag connection portion 134, and a bag 136.

[0069] The peripheral edge portion of the bag 136 is liquid-tightly fused to the bag connection portion 134. Also, the other end of the tube 86 is liquid-tightly connected to the portion of the bag connection portion 134 that protrudes outside the bag 136. The bag connection portion 134 has a bag communication hole 138 that communicates with the inner hole 102 of the tube 86.

[0070] The bag 136 has an inner hole 140 that communicates with the bag communication hole 138. The bag 136 is flexible. The bag 136 is configured in the same manner as the drainage bag 18 described above. The bag 136 expands in the thickness direction when air guided from the bag communication hole 138 flows in.

[0071] The device main body 132 has a drainage flow path 142 through which drainage flows. The drainage flow path 142 includes an introduction communication path 96, a detection flow path 98, a tube communication hole 100, the inner hole 102 of the tube 86, and the bag communication hole 138. The size of the bag 136 is preferably set to be able to accommodate at least the air in the drainage flow path 142. However, the size and shape of the bag 136 can be set as appropriate.

[0072] In the inspection device 130, the device main body 132 includes a bag 136 that stores the air in the drainage flow path 142 when introducing drainage from the connector portion 36 into the drainage flow path 142. The bag 136 expands when air flows into the inner hole 140 of the bag 136.

[0073] According to such a configuration, when causing the drainage to flow through the drainage flow path 142, the air in the drainage flow path 142 can be released into the inner hole 140 of the bag 136, so that the drainage can flow smoothly through the drainage flow path 142.

[0074] (Third Modified Example) Next, the inspection device 150 according to the third modification will be described. In the inspection device 150 according to this modification, the same components as those of the above-described inspection devices 14, 80, and 130 are denoted by the same reference numerals, and detailed descriptions thereof are omitted. Also, in the inspection device 150 according to this modification, the same components as those of the above-described inspection devices 14, 80, and 130 have the same effects.

[0075] As shown in FIG. 9, the inspection device 150 includes a connector portion 36 and a device main body 152. The device main body 152 has a tube connection portion 154, a tube 86, a holding portion 156, and a bag 136.

[0076] The tube connection portion 154 protrudes from the connector portion 36 in the direction of arrow X2. The tube connection portion 154 is liquid-tightly connected to one end portion of the tube 86. The tube connection portion 154 has a tube communication passage 158 that communicates the introduction hole 42 of the connector portion 36 and the inner hole 102 of the tube 86 with each other.

[0077] The holding portion 156 is an integrally molded product made of resin. The holding portion 156 has a first connection portion 160, a holding main body 162, and a second connection portion 164. The first connection portion 160 is liquid-tightly connected to the other end portion of the tube 86. The first connection portion 160 has a first connection hole 168 that communicates with the inner hole 102 of the tube 86.

[0078] The holding main body 162 holds the detection portion 50. The holding main body 162 has a detection flow path 170 that communicates with the first connection hole 168. The detection portion 50 is disposed in the detection flow path 170. The detection surface 72 of the detection portion 50 faces in the direction of arrow Z1. The flow path height of the portion of the detection flow path 170 adjacent to the detection surface 72 in the direction of arrow Z1 is lower than the thickness of the detection portion 50. Specifically, the flow path height is set in the same manner as the above-described inspection device 14.

[0079] The holding body 162 is configured to be transparent so that the reagent unit 70 can be visually recognized from the outside. However, the holding body 162 may be configured to be translucent so that the reagent unit 70 can be visually recognized from the outside. Also, only a part of the holding body 162 may be configured to be transparent or translucent so that the reagent unit 70 can be visually recognized from the outside.

[0080] The peripheral edge of the bag 136 is liquid-tightly fused to the second connection part 164. The second connection part 164 has a second connection hole 172 that communicates the detection flow path 170 and the inner hole 140 of the bag 136. The device main body 152 has a drainage flow path 174 through which the drainage flows. The drainage flow path 174 includes a tube communication path 158, the inner hole 102 of the tube 86, the first connection hole 168, the detection flow path 170, and the second connection hole 172.

[0081] In the inspection device 150, the device main body 152 has a tube connection part 154 provided in the connector part 36 and a tube 86 connected to the tube connection part 154. The holding part 156 is connected to the end of the tube 86 in the direction opposite to the tube connection part 154. The drainage flow path 174 includes a tube communication path 158 and the inner hole 102 of the tube 86. The tube communication path 158 is formed in the tube connection part 154 so that the drainage is led from the connector part 36. The inner hole 102 of the tube 86 communicates the tube communication path 158 and the detection flow path 170 with each other.

[0082] According to such a configuration, since it is not necessary to incorporate the holding part 156 into the tube connection part 154, the configuration of the holding part 156 can be simplified.

[0083] (Fourth Modification Example) Next, the inspection device 180 according to the fourth modification example will be described. In the inspection device 180 according to this modification example, the same components as those of the above-described inspection devices 14, 80, 130, and 150 are denoted by the same reference numerals, and the detailed description thereof will be omitted. Also, in the inspection device 180 according to this modification example, the same components as those of the above-described inspection devices 14, 80, 130, and 150 have the same effects.

[0084] As shown in FIGS. 10 to 12, the inspection device 180 includes a connector portion 36 and a device main body 182. The device main body 182 has a tube connection portion 154, a tube 86, a holding portion 184, a detection portion 50, and a filter portion 52.

[0085] In FIGS. 11 and 12, the holding portion 184 includes a holding main body 186, a first cover portion 188, and a second cover portion 190. The holding main body 186 includes a bottom wall portion 192, a peripheral wall portion 194, a holding connection portion 196, and a central wall portion 198. The bottom wall portion 192 is formed in a circular shape. The peripheral wall portion 194 projects in the direction of arrow Z1 from the outer peripheral edge portion of the bottom wall portion 192. The peripheral wall portion 194 extends in an annular shape. The holding connection portion 196 projects from the peripheral wall portion 194. The holding connection portion 196 is liquid-tightly connected to the other end portion of the tube 86. The holding connection portion 196 has a holding communication hole 200 that communicates with the inner hole 102 of the tube 86.

[0086] The central wall portion 198 projects in the direction of arrow Z1 from the bottom wall portion 192. Both end portions of the central wall portion 198 are continuous with the inner surface of the peripheral wall portion 194. A recess 202 is formed on the outer surface of the central wall portion 198 in the direction opposite to the bottom wall portion 192 (the direction of arrow Z1). The recess 202 communicates with the holding communication hole 200. The recess 202 is a detection flow path 204. The central wall portion 198 has an arrangement groove 206 and a lead-out hole 208.

[0087] The arrangement groove 206 is located on the bottom surface 210 of the recess 202. The arrangement groove 206 extends in the extending direction (arrow X direction) of the central wall portion 198. The arrangement groove 206 has a rectangular shape. The detection portion 50 is arranged in the arrangement groove 206. The lead-out hole 208 includes a first opening 212 that opens to the bottom surface 210 of the recess 202 and a second opening 214 that opens to the outer surface of the bottom wall portion 192 in the direction of arrow Z2. The first opening 212 is located in the direction of arrow X2 of the arrangement groove 206. The second opening 214 is located at the center of the bottom wall portion 192.

[0088] The first cover portion 188 is formed in a disc shape. The first cover portion 188 is liquid-tightly fixed to the protruding end portion of the peripheral wall portion 194. The first cover portion 188 covers the detection portion 50 from the direction of arrow Z1. The first cover portion 188 includes a plurality of holding protrusions 218 that hold the detection portion 50. The plurality of holding protrusions 218 protrude from the first cover portion 188 in the direction of arrow Z2. The plurality of holding protrusions 218 press the detection portion 50 toward the placement groove 206. Specifically, the plurality of holding protrusions 218 contact the corner portions of the detection portion 50 (see FIGS. 10 and 12).

[0089] The first cover portion 188 is configured to be transparent so that the reagent portion 70 can be visually recognized from the outside. However, the first cover portion 188 may be configured to be translucent so that the reagent portion 70 can be visually recognized from the outside. Also, only a part of the first cover portion 188 may be configured to be transparent or translucent so that the reagent portion 70 can be visually recognized from the outside.

[0090] The detection portion 50 extends in the direction of arrow X. The detection surface 72 of the detection portion 50 faces the first cover portion 188 (in the direction of arrow Z1). The channel height of the portion of the detection channel 204 adjacent to the detection surface 72 in the direction of arrow Z1 is lower than the thickness of the detection portion 50. Specifically, the channel height is set in the same manner as the inspection device 14 described above.

[0091] The second cover portion 190 is formed in a disc shape. The outer peripheral edge portion of the second cover portion 190 is liquid-tightly fixed to the outer peripheral edge portion of the bottom wall portion 192 so as to cover the bottom wall portion 192 from the direction opposite to the central wall portion 198 (in the direction of arrow Z2). The second cover portion 190 has an exhaust hole 220 and a filter placement portion 222. The exhaust hole 220 is formed in the central portion of the second cover portion 190. The exhaust hole 220 communicates with the second opening portion 214 of the lead-out hole 208. The filter placement portion 222 is an annular convex portion that protrudes in the direction of arrow Z1 from the surface of the second cover portion 190 in the direction of arrow Z1.

[0092] The filter unit 52 is disposed in the filter placement unit 222 so as to cover the exhaust hole 220 from the direction of arrow Z1. The filter unit 52 is sandwiched between the bottom wall portion 192 and the filter placement unit 222.

[0093] The device main body 182 has a drainage channel 224 through which drainage flows. In FIG. 12, the drainage channel 224 includes a tube communication channel 158, the inner hole 102 of the tube 86, the holding communication hole 200, the detection channel 204, and the lead-out hole 208.

[0094] In the inspection device 180, the holding unit 184 includes a holding main body 186 and a first cover unit 188. The detection unit 50 is disposed in the holding main body 186. The first cover unit 188 is liquid-tightly attached to the holding main body 162 so as to cover the reagent unit 70. The first cover unit 188 is configured to be transparent.

[0095] According to such a configuration, the detection unit 50 can be easily assembled into the holding unit 184.

[0096] Note that the present invention is not limited to the above-described embodiments, and various configurations can be adopted without departing from the gist of the present invention. The detection unit may be arranged so as not to contact the drainage. In this case, for example, the detection unit may detect a predetermined component in the drainage by infrared rays.

[0097] This embodiment discloses the following content.

[0098] An inspection device (14, 80, 130, 150, 180) for inspecting drainage, which is used dialysis fluid recovered from the peritoneal cavity (502) into the peritoneal dialysis device (12) via a catheter (506). The peritoneal dialysis device includes a dialysis connector (20) that is detachable from the connection connector (508) of the catheter. The inspection device is attachable to the dialysis connector and includes a connector portion (36) that cannot be attached to the connection connector, and a device body (38, 82, 132, 152, 182) having a drainage flow path (44, 120, 142, 174, 224) through which the drainage introduced from the connector portion flows. The device body has a detection unit (50) for detecting a predetermined component in the drainage flowing through the drainage flow path.

[0099] In the above inspection device, the detection unit includes a reagent portion (70) that reacts with the predetermined component in the drainage and changes in appearance. The device body has a holding portion (48, 84, 156, 184) that holds the detection unit so that the reagent portion contacts the drainage flowing through the drainage flow path. The holding portion may be configured to be visible from the outside.

[0100] In the above inspection device, the predetermined component is a specific component that serves as an index for determining peritonitis, and the appearance of the reagent portion may change according to the concentration of the specific component in the drainage.

[0101] In the above inspection device, the drainage flow path includes a detection flow path (64, 98, 170, 204) formed in the holding portion. The detection unit includes a detection surface (72) that contacts the drainage flowing through the detection flow path. The reagent portion is provided on the detection surface, and at least a part of the holding portion may be configured to be transparent or translucent so that the reagent portion is visible from the outside.

[0102] In the above-described inspection device, the device main body has a protruding portion (46) protruding from the connector portion, the holding portion is attached to the protruding portion, and the drainage channel may include an intermediate channel (58) formed in the protruding portion so that the drainage introduced into the connector portion is guided to the detection channel.

[0103] In the above-described inspection device, a recess (56) is formed on the outer surface of the protruding portion, and the holding portion may be liquid-tightly fitted into the recess.

[0104] In the above-described inspection device, the holding portion is provided in the connector portion, the device main body has a tube (86) connected to the holding portion, and when the drainage flows through the detection channel, the air in the detection channel may be pushed out into the inner hole (102) of the tube.

[0105] In the above-described inspection device, the device main body may have exhaust holes (66, 116, 220) for discharging the air in the drainage channel to the outside, and a filter portion (52) that permits the discharge of the air from the exhaust holes to the outside and blocks the outflow of the drainage from the exhaust holes to the outside.

[0106] In the above-described inspection device, the device main body has a connection portion (154) provided in the connector portion and a tube connected to the connection portion, the holding portion is connected to an end of the tube in a direction opposite to the connection portion, and the drainage channel may include a communication channel (158) formed in the connection portion so that the drainage led from the connector portion is led thereto, and the inner hole of the tube that communicates the communication channel with the detection channel.

[0107] In the above-described inspection device, the device main body includes a bag (136) for storing the air in the drainage channel when introducing the drainage from the connector portion into the drainage channel, and the bag may expand when the air flows into the inner hole (140) of the bag.

[0108] In the above-described inspection device, the holding unit includes a holding body (186) where the detection unit is disposed, and a cover unit (188) that is liquid-tightly attached to the holding body so as to cover the reagent unit, and at least a part of the cover unit may be configured to be transparent or translucent.

[0109] In the above-described inspection device, the connector unit may be a male connector that is detachable from the dialysis connector.

[0110] The above embodiment discloses a peritoneal dialysis device (10) including a peritoneal dialysis device for collecting drained fluid, which is used dialysis fluid, from the abdominal cavity through a catheter, and an inspection device for inspecting the drained fluid in the peritoneal dialysis device. The peritoneal dialysis device has a dialysis connector that is detachable from the connection connector of the catheter, and the inspection device is the above-described inspection device.

Explanation of Reference Numerals

[0111] 10... Peritoneal dialysis device 12... Peritoneal dialysis device 14, 80, 130, 150, 180... Inspection device 20... Dialysis connector 36... Connector unit 44, 120, 142, 174, 224... Drained fluid flow path 46... Protrusion 48, 84, 156, 184... Holding unit 50... Detection unit 52... Filter unit 56... Recess 58... Intermediate flow path 64, 98, 170, 204... Detection flow path 66, 116, 220... Vent hole 70... Reagent unit 72... Detection surface 86... Tube 136... Bag 154... Tube connection part (connection part) 158... Tube communication path (communication path) 186... Holding body 188... First cover unit (cover unit) 502... Abdominal cavity 506... Catheter 508... Connection connector

Claims

1. An inspection device for inspecting drainage, which is used dialysis fluid recovered from the peritoneal cavity through a catheter into a peritoneal dialysis device, comprising: The peritoneal dialysis device includes a dialysis connector that is detachable from the connection connector of the catheter. The inspection device A connector portion that can be attached to the dialysis connector and cannot be attached to the connection connector; and A device body having a drainage flow path through which the drainage introduced from the connector portion flows, The device body has a detection unit that detects a predetermined component in the drainage flowing through the drainage flow path.

2. The inspection device according to claim 1, The detection unit includes a reagent portion that reacts with the predetermined component in the drainage and changes in appearance, The device body has a holding portion that holds the detection unit so that the reagent portion contacts the drainage flowing through the drainage flow path, The holding portion is configured to be able to visually recognize the reagent portion from the outside.

3. The inspection device according to claim 2, The predetermined component is a specific component that serves as an index for determining peritonitis, The reagent portion changes in appearance according to the concentration of the specific component in the drainage.

4. The inspection device according to claim 2 or 3, The drainage flow path includes a detection flow path formed in the holding portion, The detection unit includes a detection surface that contacts the drainage flowing through the detection flow path, The reagent portion is provided on the detection surface, At least a part of the holding portion is configured to be transparent or translucent so that the reagent portion can be visually recognized from the outside.

5. The inspection device according to claim 4, The device body has a protruding portion protruding from the connector portion, The holding portion is attached to the protruding portion, The drainage flow path includes an intermediate flow path formed in the protruding portion so that the drainage introduced from the connector portion is guided to the detection flow path.

6. The inspection device according to claim 5, A concave portion is formed on the outer surface of the protruding portion, The holding portion is fitted into the concave portion in a liquid-tight manner.

7. The inspection device according to claim 4, The holding portion is provided on the connector portion, The device body has a tube connected to the holding portion, An inspection device in which, when the drainage liquid flows through the detection flow path, the air in the detection flow path is pushed out into the inner hole of the tube.

8. An inspection device according to any one of claims 1 to 7, wherein the device main body has an exhaust hole for discharging the air in the drainage flow path to the outside, and a filter part that permits the discharge of the air from the exhaust hole to the outside and blocks the outflow of the drainage liquid from the exhaust hole to the outside.

9. An inspection device according to claim 4, wherein the device main body has a connection part provided in the connector part, and a tube connected to the connection part, wherein the holding part is connected to an end of the tube in a direction opposite to the connection part, wherein the drainage flow path includes a communication path formed in the connection part so that the drainage liquid led from the connector part is led thereto, and the inner hole of the tube that communicates the communication path and the detection flow path with each other.

10. An inspection device according to claim 7 or 9, wherein the device main body includes a bag for storing the air in the drainage flow path when introducing the drainage liquid from the connector part into the drainage flow path, and the bag expands when the air flows into the inner hole of the bag.

11. An inspection device according to claim 4 or 7, wherein the holding part includes a holding main body on which the detection part is disposed, and a cover part that is liquid-tightly attached to the holding main body so as to cover the reagent part, wherein at least a part of the cover part is configured to be transparent or translucent.

12. An inspection device according to any one of claims 1 to 11, wherein the connector part is a male connector that is detachable from the dialysis connector.

13. A peritoneal dialysis device for collecting drainage liquid, which is used dialysis liquid, from the abdominal cavity through a catheter, and an inspection device for inspecting the drainage liquid in the peritoneal dialysis device, wherein the peritoneal dialysis device has a dialysis connector that is detachable from the connection connector of the catheter, and the inspection device is an inspection device according to any one of claims 1 to 12.

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