JP7687925B2 - Inspection device and peritoneal dialysis apparatus - Google Patents

Description

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

Patent Document 1 discloses a peritoneal dialysis device for collecting used dialysis fluid in the peritoneal cavity and injecting new dialysis fluid into the peritoneal cavity. This peritoneal dialysis device includes a dialysis bag, a connection tube, a dialysis connector, and a drainage bag. The dialysis bag contains dialysis fluid. The connection tube connects the dialysis bag and the dialysis connector to each other, and also connects the dialysis connector and the drainage bag to each other. The dialysis connector is detachable from the connector of a catheter placed in the peritoneum. The drainage bag collects used dialysis fluid (drainage fluid) discharged from the peritoneal cavity via the catheter.

Japanese Unexamined Patent Publication No. 185275/1983

By the way, the effluent from peritoneal dialysis contains waste products from the blood. Therefore, if it is possible to detect specific components in the effluent from peritoneal dialysis, it can be useful in understanding the patient's symptoms.

The present invention aims to solve the above-mentioned problems.

One aspect of the present invention is an inspection device for inspecting effluent, which is used dialysis fluid collected from the peritoneal cavity via a catheter into a peritoneal dialysis device, the peritoneal dialysis device having a dialysis connector that is detachable from the connector of the catheter, the inspection device including a connector portion that is attachable to the dialysis connector but not attachable to the connector, and a device body having a drainage flow path through which the drainage introduced from the connector portion flows, the device body having a detection portion that detects a specific component in the drainage flowing through the drainage flow path.

Another aspect of the present invention is a peritoneal dialysis apparatus that includes a peritoneal dialysis device that collects waste dialysis fluid from the peritoneal cavity via a catheter, and an inspection device that inspects the waste fluid in the peritoneal dialysis device, the peritoneal dialysis device having a dialysis connector that is detachable from the connector of the catheter, and the inspection device being the inspection device described above.

According to the present invention, after effluent from peritoneal dialysis is collected from the abdominal cavity through a catheter into a peritoneal dialysis device, the connector part of the testing device can be attached to the dialysis connector detached from the connector of the catheter. This allows the effluent in the peritoneal dialysis device to flow into the drainage flow path of the device body, and a specific component in the effluent flowing through the drainage flow path can be detected by the detection part. This makes it possible to know the patient's symptoms based on the detection results of the detection part. In addition, the connector part is configured so that it cannot be attached to the connector of the catheter. Therefore, the user will not mistakenly attach the connector part of the testing device to the connector of the catheter. This reduces the risk of infection from the testing device via the catheter.

FIG. 1 is a diagram illustrating the configuration of a peritoneal dialysis device according to one embodiment of the present invention. FIG. 2 is a perspective view of the testing device of FIG. FIG. 3 is an exploded perspective view of the testing device of FIG. FIG. 4 is a longitudinal cross-sectional view of the testing device of FIG. FIG. 5 is an explanatory diagram of a method of using the peritoneal dialysis apparatus of FIG. FIG. 6 is a perspective view of an inspection device according to a first modified example. FIG. 7 is a longitudinal cross-sectional view of the testing device of FIG. FIG. 8 is a vertical cross-sectional view of a testing device according to a second modified example, with a portion thereof omitted. FIG. 9 is a vertical cross-sectional view of a testing device according to a third modified example, with a portion thereof omitted. FIG. 10 is a perspective view of an inspection device according to a fourth modified example. FIG. 11 is a partially exploded perspective view of the testing device of FIG. FIG. 12 is a longitudinal cross-sectional view of the testing device of FIG.

As shown in FIG. 1, a peritoneal dialysis apparatus 10 according to one embodiment of the present invention includes a peritoneal dialysis device 12 and a testing device 14. The peritoneal dialysis device 12 is used when replacing used dialysis fluid in the peritoneal cavity 502 of a patient 500 with new dialysis fluid. Each of the peritoneal dialysis device 12 and the testing device 14 is a disposable item that is discarded after a single use.

The peritoneal dialysis device 12 has a dialysis bag 16, a drainage bag 18, a dialysis connector 20, a connection 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 fluid, which is used dialysis fluid in the peritoneal cavity 502. Therefore, before use of the peritoneal dialysis device 12, the drainage bag 18 is empty. Each of the dialysis bag 16 and the drainage bag 18 is formed into a bag shape by, for example, overlapping soft resin sheets on top of each other and sealing the periphery.

The dialysis connector 20 is detachable from the connection connector 508 of the catheter 506 placed in the peritoneum 504 of the patient 500. The connection connector 508 is a male connector having a male threaded portion. The dialysis connector 20 is a female connector having a female threaded portion that screws into the male threaded portion. However, when the connection connector 508 is a female connector, the dialysis connector 20 may be a male connector. In addition, the connection connector 508 and the dialysis connector 20 are not limited to threaded engagement and may adopt any appropriate configuration.

The connection tube 22 connects the dialysis bag 16 and the dialysis connector 20 to each other, and also connects the drainage bag 18 and the dialysis connector 20 to each other. The connection tube 22 has a first tube 28, a second tube 30, a branch portion 32, and a third tube 34.

The first tube 28 connects the dialysis bag 16 to the branch 32. The second tube 30 connects the drainage bag 18 to the branch 32. The third tube 34 connects the branch 32 to the dialysis connector 20.

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.

As shown in Figures 1 and 2, the testing device 14 includes a connector portion 36 and a device 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 thread portion 40 that screws into the female thread portion of the dialysis connector 20. The connector portion 36 is configured so that it cannot be attached to the connecting connector 508 of the catheter 506. When the dialysis connector 20 is a male connector, the connector portion 36 may be a female connector. In addition, the connector portion 36 and the dialysis connector 20 are not limited to being threadedly engaged, and any appropriate configuration may be adopted.

In Figures 3 and 4, the connector portion 36 has an introduction hole 42 for introducing the drainage fluid from the peritoneal dialysis device 12 (see Figure 1). The introduction hole 42 opens in the direction of the arrow X1. The introduction hole 42 communicates with the drainage flow path 44 of the device body 38.

The device body 38 has a protrusion 46, a holding portion 48, a detection portion 50, and a filter portion 52. The protrusion 46 protrudes in the direction of the arrow X2 from the end face of the connector portion 36 in the direction of the arrow X2. The protrusion 46 and the connector portion 36 are integrally molded from a resin material. The protrusion 46 has a shape similar to a triangular prism. The outer surface of the protrusion 46 located in the direction of the arrow Z1 has a flat surface 54. The flat surface 54 has a rectangular recess 56. The protrusion 46 has an intermediate flow path 58 that communicates with the introduction hole 42 (see FIG. 4). The intermediate flow path 58 opens to the bottom surface 60 of the recess 56.

The holding portion 48 is provided on the protruding portion 46 and holds the detection portion 50. The holding portion 48 is a one-piece molded product made of resin. The holding portion 48 has a rectangular parallelepiped shape. The holding portion 48 is fitted liquid-tightly into the recess 56. The holding portion 48 has a flat outer surface 62 exposed in the opposite direction (arrow Z1 direction) to the bottom surface 60 of the recess 56. 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 is connected to the intermediate flow path 58 (see FIG. 4). The drainage flow path 44 has the intermediate flow path 58 and the detection flow path 64.

The exhaust hole 66 exhausts air in the drainage flow path 44 to the outside. The exhaust hole 66 is connected to the detection flow path 64. The exhaust hole 66 opens to the outer surface 62 of the holding portion 48. The filter placement portion 68 is located on the outer surface 62 of the holding portion 48. The filter placement portion 68 is an annular groove that surrounds the opening of the exhaust hole 66.

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

The detection surface 72 is disposed parallel to the outer surface 62 of the holding section 48. The detection surface 72 faces the direction of the arrow Z1. The holding section 48 is configured to be transparent so that the reagent section 70 can be seen from the outside. However, the holding section 48 may be configured to be semi-transparent so that the reagent section 70 can be seen from the outside. Also, only a portion of the holding section 48 may be configured to be transparent or semi-transparent. In other words, only the portion of the holding section 48 that faces the detection surface 72 may be configured to be transparent or semi-transparent, and the other portions may be configured to be opaque. In other words, it is sufficient that the holding section 48 is configured to allow the reagent section 70 to be seen from the outside.

The flow channel height of the portion of the detection flow channel 64 adjacent to the detection surface 72 in the direction of the arrow Z1 is lower than the thickness of the detection section 50. Specifically, the flow channel height is preferably set to 0.9 mm or more and 10 mm or less, and more preferably set to 1.0 mm or more and 2.0 mm or less. In this case, even if the drainage liquid is turbid, the detection surface 72 is easily visible from the outside through the holding section 48.

The predetermined component is, for example, a specific component that is an indicator for determining peritonitis. The specific component is a white blood cell component. The appearance of the reagent section 70 changes depending on the concentration of the specific component in the drainage fluid. The reagent section 70 reacts with the white blood cell component in the drainage fluid and changes color. Specifically, the reagent section 70 changes color when the concentration of the white blood cell component in the drainage fluid is equal to or higher than a 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 or not there is a possibility of peritonitis by visually checking that the color of the reagent section 70 has changed. Examples of materials that make up the reagent section 70 include test paper using filter paper.

The reagent section 70 may be configured to react with blood components other than white blood cells in the drained fluid and change its appearance. This makes it possible to use the testing device 14 to determine blood diseases, etc. The reagent section 70 may also be configured to react with viruses, etc. in the drained fluid and change its appearance. In this case, it is possible to determine whether the patient 500 is infected with a specific virus.

The reagent section 70 may be configured to change shape (e.g., dissolve) depending on the concentration of a specific component in the effluent. The reagent section 70 may also be configured to display information consisting of letters, figures, symbols, or a combination of these depending on the concentration of a specific component in the effluent.

The detection unit 50 may have multiple types of reagent units 70. In this case, the multiple types of reagent units 70 react to different components in the drainage liquid.

The filter section 52 is fixed to the filter placement section 68 in a liquid-tight manner. The filter section 52 is configured in a disk shape. The filter section 52 allows air to be discharged to the outside through the exhaust hole 66. The filter section 52 prevents drainage liquid from flowing out to the outside through the exhaust hole 66. Examples of materials that can be used to form the filter section 52 include a porous fluororesin membrane.

Next, a method of using the peritoneal dialysis device 10 according to this embodiment will be described. The peritoneal dialysis device 10 is used when replacing the used dialysis fluid in the peritoneum 504 with new dialysis fluid. 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. Next, the user attaches the dialysis connector 20 of the peritoneal dialysis device 10 to the connector 508 of the catheter 506 placed in the peritoneum 504.

Then, the second clamp 26 is operated to open the inner hole of the second tube 30. The first clamp 24 closes the inner hole of the first tube 28. Then, the drainage liquid, which is the used dialysis fluid in the abdominal cavity 502, is collected in the drainage bag 18 via the catheter 506, the dialysis connector 20, the third tube 34, the branching section 32, and the second tube 30. When the collection of the drainage liquid from the peritoneal dialysis in the drainage bag 18 is completed, the second clamp 26 is operated to close the inner hole of the second tube 30.

Then, the first clamp 24 is operated to open the inner hole of the first tube 28. Then, new dialysis fluid in the dialysis bag 16 is injected into the abdominal cavity 502 via the first tube 28, the branch 32, the third tube 34, the dialysis connector 20, and the catheter 506. When the injection of the dialysis fluid 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.

Next, as shown in FIG. 5, the connector portion 36 of the testing device 14 is attached to the dialysis connector 20 of the peritoneal dialysis device 10. The drainage bag 18 is placed above the dialysis connector 20. The second clamp 26 is then 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 testing device 14 via the second tube 30, the branch portion 32, the third tube 34, and the dialysis connector 20.

The drainage liquid that has flowed into the inlet hole 42 flows through the drainage flow path 44 while pushing against the air present in the inlet hole 42 and the drainage flow path 44. At this time, the air pushed by the drainage liquid passes through the filter section 52 and is exhausted to the outside through the exhaust hole 66. This allows the drainage liquid to flow smoothly through the drainage flow path 44.

In FIG. 4, the waste liquid introduced from the introduction hole 42 through the intermediate flow path 58 to the detection flow path 64 comes into contact with the reagent section 70 (detection surface 72). At this time, for example, if the concentration of white blood cells in the waste liquid is equal to or higher than a reference value, the reagent section 70 reacts with the white blood cells and changes color. On the other hand, if the concentration of white blood cells in the waste liquid is lower than the reference value, the color of the reagent section 70 does not change.

By visually checking the reagent section 70 through the holding section 48, the user can easily know whether the color of the reagent section 70 has changed. In other words, by confirming that the color of the reagent section 70 has changed, the user can easily know that peritonitis has occurred. In addition, by confirming that the color of the reagent section 70 has not changed, the user can easily know that peritonitis has not occurred.

The drainage liquid that comes into contact with the reagent section 70 flows toward the exhaust hole 66. The drainage liquid does not pass through the filter section 52. When the test using the test device 14 is completed, the peritoneal dialysis device 12 and the test device 14 are discarded together.

This embodiment provides the following advantages:

According to this embodiment, after the effluent from the peritoneal dialysis is collected from the abdominal cavity 502 to the peritoneal dialysis device 12 via the catheter 506, the connector portion 36 of the testing device 14 can be attached to the dialysis connector 20 removed from the connector 508 of the catheter 506. This allows the effluent in the peritoneal dialysis device 12 to flow into the drainage flow path 44 of the device body 38, and the detection unit 50 can detect a specific component in the effluent flowing through the drainage flow path 44. This makes it possible to know the symptoms of the patient 500 based on the detection result of the detection unit 50. In addition, the connector portion 36 is configured so as not to be attached to the connector 508 of the catheter 506. Therefore, the user will not mistakenly attach the connector portion 36 of the testing device 14 to the connector 508 of the catheter 506. This reduces the risk of infection from the testing device 14 via the catheter 506.

The detection unit 50 includes a reagent portion 70 that changes appearance upon reacting with a specific component in the drainage liquid. The holding unit 48 holds the detection unit 50 so that the reagent portion 70 comes into contact with the drainage liquid flowing through the drainage flow path 44. The holding unit 48 is also configured so that the reagent portion 70 is visible from the outside.

With this configuration, the symptoms of the patient 500 can be easily ascertained by visually checking whether the appearance of the reagent section 70 has changed.

The predetermined component is a specific component that serves as an indicator for determining peritonitis. The appearance of the reagent section 70 changes depending on the concentration of the specific component in the drainage fluid.

With this configuration, the symptoms of peritonitis can be easily ascertained by visually checking whether the appearance of the reagent section 70 has changed.

The drainage flow path 44 includes a detection flow path 64 formed in the holding portion 48. The detection portion 50 includes a detection surface 72 that comes into contact with the drainage flowing through the detection flow path 64. The detection surface 72 is provided with a reagent portion 70. The holding portion 48 is configured to be transparent.

With this configuration, the holding portion 48 is transparent, making it easy to see the reagent portion 70 provided on the detection surface 72.

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

With this configuration, the holding portion 48 is attached to the protrusion 46, making it possible to make the testing device 14 relatively compact.

A recess 56 is formed on the flat surface 54 of the protrusion 46. The retaining portion 48 is fitted into the recess 56 in a liquid-tight manner.

This configuration allows the testing device 14 to be made even more compact.

The device body 38 has an exhaust hole 66 and a filter section 52. The exhaust hole 66 exhausts air in the drainage flow path 44 to the outside. The filter section 52 allows air to be exhausted to the outside from the exhaust hole 66, and prevents drainage from flowing out to the outside from the exhaust hole 66.

With this configuration, the air in the drainage flow path 44 can be discharged to the outside through the exhaust hole 66, allowing the drainage flow path 44 to flow smoothly. In addition, the filter section 52 is provided, preventing the drainage from flowing out to the outside through the exhaust hole 66.

The connector portion 36 is a male connector that can be attached to the dialysis connector 20.

With this configuration, it is possible to obtain a connector portion 36 that can be attached to the dialysis connector 20 but cannot be attached to the connection connector 508 with a simple configuration.

(First Modification)
Next, a test device 80 according to a first modified example will be described. In the test device 80 according to this modified example, the same components as those in the test device 14 described above are given the same reference numerals, and detailed descriptions thereof will be omitted. In addition, in the test device 80 according to this modified example, the same components as those in the test device 14 described above have the same effects.

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

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

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

A detection unit 50 is disposed in the detection flow path 98. The detection unit 50 extends in the direction of the arrow X. The detection surface 72 of the detection unit 50 faces in the direction of the arrow Z1. The detection surface 72 comes into contact with the waste liquid flowing through the detection flow path 98. The flow path height of the portion of the detection flow path 98 adjacent to the detection surface 72 in the direction of the arrow Z1 is lower than the thickness of the detection unit 50. Specifically, the flow path height is set in the same manner as in the above-described testing device 14.

6 and 7, the holding body 90 is configured to be transparent so that the reagent section 70 can be seen from the outside. However, the holding body 90 may be configured to be semi-transparent so that the reagent section 70 can be seen from the outside. Also, only a portion of the holding body 90 may be configured to be transparent or semi-transparent so that the reagent section 70 can be seen from the outside.

The connecting portion 92 is fitted liquid-tightly 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 flow path 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.

One end of the tube 86 is liquid-tightly connected to the connecting portion 92. The inner hole 102 of the tube 86 is connected to 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.

The exhaust section 88 has an exhaust communication hole 104 that communicates with the inner hole 102 of the tube 86. The exhaust section 88 has a first exhaust cover part 106, a second exhaust cover part 108, and a filter part 52. The first exhaust cover part 106 includes an exhaust cover main body 110, an exhaust connection part 112, and a support protrusion 114. The exhaust cover main body 110 is formed in a circular ring shape. The exhaust connection part 112 protrudes from the center of the exhaust cover main body 110. The exhaust connection part 112 is liquid-tightly connected to the other end of the tube 86. The support protrusion 114 protrudes from the exhaust cover main body 110 in the direction of the arrow X2. The support protrusion 114 is formed in a circular ring shape.

The second exhaust cover part 108 is formed in an annular shape. The peripheral portion of the second exhaust cover part 108 is connected to the peripheral portion 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 center of the second exhaust cover part 108. The exhaust hole 116 is connected to 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 the arrow X1. The filter arrangement part 118 is an annular groove that surrounds the exhaust hole 116.

The filter section 52 is arranged in the filter arrangement section 118 so as to cover the exhaust hole 116. The filter section 52 is sandwiched between the support protrusion 114 and the second exhaust cover section 108.

The device body 82 has a drainage flow path 120 through which drainage flows. The drainage flow path 120 includes an introduction passage 96, a detection flow path 98, a tube connection hole 100, an inner hole 102 of the tube 86, and an exhaust connection hole 104.

In the testing device 80, the holding portion 84 is provided in the connector portion 36. The device body 82 has a tube 86 connected to the holding portion 84. When the drainage 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.

This configuration allows the waste liquid to flow smoothly through the detection flow path 98. This allows the waste liquid to come into contact with the detection surface 72 efficiently.

(Second Modification)
Next, a test device 130 according to a second modified example will be described. In the test device 130 according to this modified example, the same components as those in the test devices 14 and 80 described above are given the same reference numerals, and detailed descriptions thereof will be omitted. Furthermore, in the test device 130 according to this modified example, the same components as those in the test devices 14 and 80 described above have the same effects.

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

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

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 similarly to the drainage bag 18 described above. The bag 136 expands in the thickness direction of the bag 136 due to the air that flows in through the bag communication hole 138.

The device body 132 has a drainage flow path 142 through which the drainage liquid flows. The drainage flow path 142 includes an introduction communication passage 96, a detection flow path 98, a tube communication hole 100, an inner hole 102 of the tube 86, and a bag communication hole 138. It is preferable that the size of the bag 136 is set so that it can 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.

In the testing device 130, the device body 132 includes a bag 136 that stores air in the drainage flow path 142 when drainage is introduced 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.

With this configuration, when drainage liquid is circulated through the drainage flow path 142, the air in the drainage flow path 142 can be released through the inner hole 140 of the bag 136, allowing the drainage liquid to flow smoothly through the drainage flow path 142.

(Third Modification)
Next, a test device 150 according to a third modified example will be described. In the test device 150 according to this modified example, the same components as those in the test devices 14, 80, and 130 described above are given the same reference numerals, and detailed descriptions thereof will be omitted. In addition, in the test device 150 according to this modified example, the same components as those in the test devices 14, 80, and 130 described above have the same effects.

As shown in FIG. 9, the testing device 150 includes a connector portion 36 and a device body 152. The device body 152 includes a tube connection portion 154, a tube 86, a holding portion 156, and a bag 136.

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

The holding portion 156 is a one-piece molded product made of resin. The holding portion 156 has a first connection portion 160, a holding body 162, and a second connection portion 164. The first connection portion 160 is liquid-tightly connected to the other end 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.

The holding body 162 holds the detection unit 50. The holding body 162 has a detection flow path 170 that communicates with the first connection hole 168. The detection unit 50 is arranged in the detection flow path 170. The detection surface 72 of the detection unit 50 faces the direction of the 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 the arrow Z1 is lower than the thickness of the detection unit 50. Specifically, the flow path height is set in the same manner as the above-mentioned testing device 14.

The holding body 162 is configured to be transparent so that the reagent section 70 can be seen from the outside. However, the holding body 162 may be configured to be semi-transparent so that the reagent section 70 can be seen from the outside. Also, only a portion of the holding body 162 may be configured to be transparent or semi-transparent so that the reagent section 70 can be seen from the outside.

The peripheral edge of the bag 136 is fused to the second connection part 164 in a liquid-tight manner. The second connection part 164 has a second connection hole 172 that connects the detection flow path 170 to the inner hole 140 of the bag 136. The device body 152 has a drainage flow path 174 through which the drainage liquid flows. The drainage flow path 174 includes the 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.

In the testing device 150, the device body 152 has a tube connection portion 154 provided in the connector portion 36 and a tube 86 connected to the tube connection portion 154. The holding portion 156 is connected to the end of the tube 86 opposite the tube connection portion 154. The drainage flow path 174 includes a tube communication passage 158 and an inner hole 102 of the tube 86. The tube communication passage 158 is formed in the tube connection portion 154 so that the drainage is guided from the connector portion 36. The inner hole 102 of the tube 86 connects the tube communication passage 158 and the detection flow path 170 to each other.

With this configuration, there is no need to incorporate the holding portion 156 into the tube connection portion 154, so the configuration of the holding portion 156 can be simplified.

(Fourth Modification)
Next, an inspection device 180 according to a fourth modified example will be described. In the inspection device 180 according to this modified example, the same components as those in the above-mentioned inspection devices 14, 80, 130, and 150 are given the same reference numerals, and detailed descriptions thereof will be omitted. In addition, in the inspection device 180 according to this modified example, the same components as those in the above-mentioned inspection devices 14, 80, 130, and 150 have the same effects.

As shown in Figures 10 to 12, the testing device 180 includes a connector section 36 and a device body 182. The device body 182 includes a tube connection section 154, a tube 86, a holding section 184, a detection section 50, and a filter section 52.

11 and 12, the holding portion 184 includes a holding body 186, a first cover portion 188, and a second cover portion 190. The holding 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 protrudes from the outer peripheral edge portion of the bottom wall portion 192 in the direction of the arrow Z1. The peripheral wall portion 194 extends in an annular shape. The holding connection portion 196 protrudes 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.

The central wall portion 198 protrudes from the bottom wall portion 192 in the direction of arrow Z1. Both ends of the central wall portion 198 are connected to 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 opposite direction to the bottom wall portion 192 (the direction of arrow Z1). The recess 202 is connected to 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 an outlet hole 208.

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

The first cover portion 188 is formed in a disk shape. The first cover portion 188 is fixed liquid-tightly to the protruding end of the peripheral wall portion 194. The first cover portion 188 covers the detection portion 50 from the direction of the 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 the arrow Z2. The plurality of holding protrusions 218 press the detection portion 50 toward the arrangement groove 206. Specifically, the plurality of holding protrusions 218 contact the corners of the detection portion 50 (see Figures 10 and 12).

The first cover portion 188 is configured to be transparent so that the reagent portion 70 can be seen from the outside. However, the first cover portion 188 may be configured to be semi-transparent so that the reagent portion 70 can be seen from the outside. Also, only a portion of the first cover portion 188 may be configured to be transparent or semi-transparent so that the reagent portion 70 can be seen from the outside.

The detection unit 50 extends in the direction of the arrow X. The detection surface 72 of the detection unit 50 faces the first cover part 188 (in the direction of the arrow Z1). The flow channel height of the portion of the detection flow channel 204 adjacent to the detection surface 72 in the direction of the arrow Z1 is lower than the thickness of the detection unit 50. Specifically, the flow channel height is set in the same manner as the above-mentioned testing device 14.

The second cover part 190 is formed in a disk shape. The outer peripheral edge of the second cover part 190 is fixed liquid-tight to the outer peripheral edge of the bottom wall part 192 so as to cover the bottom wall part 192 from the opposite direction (arrow Z2 direction) to the central wall part 198. The second cover part 190 has an exhaust hole 220 and a filter arrangement part 222. The exhaust hole 220 is formed in the central part of the second cover part 190. The exhaust hole 220 is connected to the second opening 214 of the outlet hole 208. The filter arrangement part 222 is an annular convex part that protrudes in the arrow Z1 direction from the surface of the second cover part 190 in the arrow Z1 direction.

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

The device body 182 has a drainage flow path 224 through which the drainage liquid flows. In FIG. 12, the drainage flow path 224 includes the tube communication passage 158, the inner hole 102 of the tube 86, the holding communication hole 200, the detection flow path 204, and the discharge hole 208.

In the testing device 180, the holding section 184 includes a holding body 186 and a first cover section 188. The detection section 50 is disposed in the holding body 186. The first cover section 188 is attached in a liquid-tight manner to the holding body 162 so as to cover the reagent section 70. The first cover section 188 is configured to be transparent.

This configuration allows the detection unit 50 to be easily assembled within the holding portion 184.

The present invention is not limited to the above-described embodiment, and various configurations may be adopted without departing from the gist of the present invention. The detection unit may be arranged so as not to come into contact with the drainage liquid. In this case, for example, the detection unit may detect a specific component in the drainage liquid by infrared rays.

This embodiment discloses the following:

The above embodiment discloses an inspection device (14, 80, 130, 150, 180) for inspecting effluent, which is used dialysis fluid collected from the peritoneal cavity (502) through a catheter (506) into a peritoneal dialysis device (12), the peritoneal dialysis device is provided with a dialysis connector (20) that is detachable from the connector (508) of the catheter, the inspection device includes a device body (38, 82, 132, 152, 182) that is attachable to the dialysis connector but not attachable to the connector, and a drainage flow path (44, 120, 142, 174, 224) through which the drainage introduced from the connector flows, and the device body has a detection unit (50) that detects a specific component in the drainage flowing through the drainage flow path.

In the above-mentioned testing device, the detection unit includes a reagent portion (70) that changes appearance upon reacting with the specific component in the drainage liquid, and the device body has a holding portion (48, 84, 156, 184) that holds the detection unit so that the reagent portion comes into contact with the drainage liquid flowing through the drainage flow path, and the holding portion may be configured so that the reagent portion is visible from the outside.

In the above test device, the predetermined component is a specific component that serves as an indicator for determining peritonitis, and the appearance of the reagent portion may change depending on the concentration of the specific component in the drainage fluid.

In the above-mentioned testing device, the drainage flow path includes a detection flow path (64, 98, 170, 204) formed in the holding part, the detection part includes a detection surface (72) that contacts the drainage flowing through the detection flow path, the detection surface is provided with the reagent part, and at least a part of the holding part may be configured to be transparent or semi-transparent so that the reagent part can be seen from the outside.

In the above-mentioned testing device, the device body may have a protrusion (46) protruding from the connector portion, the holding portion may be attached to the protrusion, and the drainage flow path may include an intermediate flow path (58) formed in the protrusion so that the drainage introduced into the connector portion is guided to the detection flow path.

In the above-mentioned testing device, a recess (56) may be formed on the outer surface of the protrusion, and the holding portion may be fitted into the recess in a liquid-tight manner.

In the above-mentioned testing device, the holding portion is provided in the connector portion, the device body has a tube (86) connected to the holding portion, and when the drainage liquid flows through the detection flow path, air in the detection flow path may be pushed out into the inner hole (102) of the tube.

In the above-mentioned testing device, the device body may have an exhaust hole (66, 116, 220) for exhausting air in the drainage flow path to the outside, and a filter section (52) that allows the air to be exhausted to the outside from the exhaust hole and prevents the drainage from flowing out to the outside from the exhaust hole.

In the above-mentioned testing device, the device body may have a connection part (154) provided on the connector part and a tube connected to the connection part, the holding part may be connected to the end of the tube opposite to the connection part, and the drainage flow path may include a communication passage (158) formed in the connection part so that the drainage led from the connector part is led therethrough, and an inner hole of the tube that connects the communication passage to the detection flow path.

In the above-mentioned testing device, the device body includes a bag (136) for storing air in the drainage flow path when the drainage is introduced from the connector portion to the drainage flow path, and the bag may expand when the air flows into the inner hole (140) of the bag.

In the above-mentioned testing device, the holding section includes a holding body (186) in which the detection section is disposed, and a cover section (188) attached to the holding body in a liquid-tight manner so as to cover the reagent section, and at least a portion of the cover section may be configured to be transparent or translucent.

In the above testing device, the connector portion may be a male connector that is detachable from the dialysis connector.

The above embodiment discloses a peritoneal dialysis apparatus (10) that includes a peritoneal dialysis device for collecting drainage, which is used dialysis fluid, from the peritoneal cavity via a catheter, and an inspection device for inspecting the drainage in the peritoneal dialysis device, the peritoneal dialysis device having a dialysis connector that is detachable from the connector of the catheter, and the inspection device being the inspection device described above.

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

Claims (13)

A testing device for testing drainage, which is used dialysate collected in a peritoneal dialysis device via a catheter from a peritoneal cavity, comprising:
The peritoneal dialysis device includes a dialysis connector that is detachable from a connector of the catheter,
The inspection device comprises:
A connector portion that is attachable to the dialysis connector but not attachable to the connecting connector;
a device body having a drainage flow path through which the drainage introduced from the connector portion flows,
The device body is an inspection device having a detection unit that detects a predetermined component in the drainage flowing through the drainage flow path. 2. The testing device of claim 1,
the detection unit includes a reagent unit that reacts with the predetermined component in the drainage liquid and changes appearance,
the device body has a holder that holds the detection unit so that the reagent unit comes into contact with the drainage flowing through the drainage flow path,
The holding section is configured so that the reagent section is visible from the outside. 3. The testing device of claim 2,
The predetermined component is a specific component that serves as an indicator for determining peritonitis,
The reagent portion changes appearance depending on the concentration of the specific component in the drainage liquid. 4. The testing 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 comes into contact with the waste liquid flowing through the detection flow path,
The detection surface is provided with the reagent portion,
At least a part of the holding section is configured to be transparent or semi-transparent so that the reagent section is visible from the outside. 5. The testing device of claim 4,
the device body has a protrusion protruding from the connector portion,
The retaining portion is attached to the protrusion,
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 testing device of claim 5,
A recess is formed on an outer surface of the protrusion,
An inspection device, wherein the holding portion is fitted liquid-tightly into the recess. 5. The testing device of claim 4,
The holding portion is provided on the connector portion,
the device body has a tube connected to the holding portion,
When the waste liquid flows through the detection flow path, air within the detection flow path is pushed out into the inner hole of the tube. The test device according to any one of claims 1 to 7,
The device body includes:
an exhaust hole for discharging air in the drainage flow path to the outside;
a filter portion that allows the air to be discharged from the exhaust hole to the outside and prevents the drainage liquid from flowing out from the exhaust hole to the outside. 5. The testing device of claim 4,
The device body includes:
A connection portion provided on the connector portion;
a tube connected to the connection portion,
The holding portion is connected to an end of the tube opposite to the connection portion,
The drainage flow path is
a communication passage formed in the connection portion so that the drainage liquid guided from the connector portion is guided therethrough;
an inner bore of the tube that connects the communication passage and the detection flow path to each other. 10. The testing device according to claim 7 or 9,
the device body includes a bag for storing air in the drainage flow path when the drainage liquid is introduced from the connector portion to the drainage flow path,
The bag is inflated by the air flowing into the inner hole of the bag. 8. The testing device according to claim 4 or 7,
The holding portion is
A holding body in which the detection unit is disposed;
a cover portion attached liquid-tightly to the holding body so as to cover the reagent portion,
An inspection device, wherein at least a portion of the cover portion is configured to be transparent or translucent. The test device according to any one of claims 1 to 11,
The connector portion is a male connector that is detachable from the dialysis connector. A peritoneal dialysis device that collects drainage, which is used dialysis fluid, from the abdominal cavity via a catheter;
a testing device for testing the effluent in the peritoneal dialysis device;
The peritoneal dialysis device has a dialysis connector that is detachable from a connector of the catheter,
A peritoneal dialysis apparatus, wherein the testing device is an testing device according to any one of claims 1 to 12.

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