Fluid collection bag with liquid level meter

Abstract

To provide a sampled liquid bag with a liquid level meter capable of smoothly transferring liquid from the liquid level meter to the sampled liquid bag.SOLUTION: A sampled liquid bag with a liquid level meter includes: a liquid level meter (a urine quantity meter 12); and a sampled liquid bag which opposes a front surface to a back surface of the liquid level meter and is connected to the liquid level meter. The liquid level meter has: an entrance 32 to which a tube is connected; and an exit 20 which protrudes and is formed into a cylindrical shape on a back surface and communicates with an entrance of the sampled liquid bag. In a back surface plate part 14 forming a back surface of the liquid level meter, an inner surface of an upward direction part 17 extending toward an upper end of the liquid level meter from an upper end of a root end of the exit 20 is inclined in the direction away from a front surface of the sampled liquid bag toward the upper end of the liquid level meter.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a fluid collection bag with a fluid level meter. [Background technology]

[0002] Conventionally, in operating rooms, hospital rooms, etc., a urinary catheter is placed in the patient's bladder and connected to measure the patient's urine collection volume and urine output over a specified period of time. A urine collection bag with a urinary volume meter, which is a fluid collection bag with a fluid volume meter, is then connected to the urinary catheter.

[0003] Patent Document 1 describes a urine collection bag with a urine volume meter, which includes a urine volume meter with a scale and a urine collection bag connected to the urine volume meter and facing the urine volume meter. The urine volume meter has an inlet to which a tube is connected and an outlet that protrudes cylindrically from the back of the urine volume meter and communicates with the inlet of the collection bag. Urine from a patient is introduced into the tube. The outlet is formed at the upper end of a back panel that forms the back of the urine volume meter. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 10-225474 Summary of the Invention [Problem to be solved by the invention]

[0005] When using the urine collection bag with urinary volume meter described in Patent Document 1, after measuring the patient's urine output with the urinary volume meter, the lower part of the urinary volume meter is raised above the upper end to transfer the urine to the urine collection bag. Meanwhile, it is conceivable to form an outlet on the back panel of the urinary volume meter at a position below the upper end of the back panel. In this case, if the portion of the inner surface of the back panel above the outlet is perpendicular to the front-to-back direction (the direction facing the urine collection bag), this upper portion will be below the outlet when transferring urine to the urine collection bag, and urine will likely accumulate near that area. As a result, when transferring urine from the urinary volume meter to the urine collection bag, the urine cannot be transferred smoothly to the urine collection bag, which makes the urine transfer process take a long time, increases the burden on the person performing the transfer, and may result in improper measurement.

[0006] An object of the present invention is to provide a liquid collection bag with a liquid level meter that allows for smooth transfer of liquid from the liquid level meter to the liquid collection bag. [Means for solving the problem]

[0007] The liquid collection bag with a liquid level meter according to the present invention is a liquid collection bag with a liquid level meter comprising a liquid level meter and a liquid collection bag whose front face faces the back face of the liquid level meter and is connected to the liquid level meter, wherein the liquid level meter has an inlet to which a tube is connected and an outlet that protrudes cylindrically from the back face and communicates with the inlet of the liquid collection bag, and the inner surface of the upper part of the back panel portion that forms the back face of the liquid level meter, extending from the upper end of the base end of the outlet toward the upper end of the liquid level meter, is inclined in a direction away from the front face of the liquid collection bag toward the upper end of the liquid level meter.

[0008] With this configuration, when transferring liquid to the collection bag, if the lower part of the liquid meter is lifted and tilted slightly relative to the horizontal so that the lower part is on top, the inner surface of the upper part of the liquid meter will tend to tilt so that the upper end is higher than the lower end on the outlet side. This tilt of the upper part makes it easier for liquid to flow smoothly from the inner surface of the upper part toward the outlet, allowing for smooth transfer of liquid from the liquid meter to the collection bag.

[0009] In the liquid collection bag with liquid level meter according to the present invention, the inner surfaces of two horizontal portions of the back panel portion that forms the back surface of the liquid level meter, each extending from both horizontal ends of the base end of the outlet toward the horizontal ends of the liquid level meter, may be configured to be inclined in a direction away from the front surface of the liquid collection bag toward the horizontal ends of the liquid level meter.

[0010] With this configuration, when the lower part of the liquid meter is lifted to transfer the liquid to the collection bag, the inclination of the inner surfaces of the two horizontal sections of the back panel of the liquid meter that extend from both horizontal ends of the base end of the outlet facilitates a smooth flow of liquid from the inner surfaces of the horizontal sections toward the outlet, thereby enabling a smoother transfer of liquid from the liquid meter to the collection bag.

[0011] In the liquid collection bag with liquid meter according to the present invention, the inner surface of the downward portion of the back panel portion of the liquid meter, which extends from the lower end of the base end of the outlet toward the lower end of the liquid meter, may be configured to be inclined in a direction away from the front surface of the liquid collection bag toward the lower end of the liquid meter.

[0012] According to the above configuration, when transferring liquid to the collection bag, if the lower part of the liquid meter is lifted and tilted slightly relative to the horizontal so that the lower part is facing upward, the inner surface of the downward part of the liquid meter tends to be significantly tilted so that the bottom end is higher than the top end of the outlet side. This tilt of the downward part makes it easier for liquid to flow smoothly from the inner surface of the downward part toward the outlet. This allows for smoother transfer of liquid from the liquid meter to the collection bag.

[0013] In the liquid collection bag with liquid level meter according to the present invention, the inner surfaces of two horizontal portions of the back panel portion that extend from both horizontal ends of the base end of the outlet toward the horizontal ends of the liquid level meter may be inclined in a direction away from the front surface of the liquid collection bag toward the horizontal ends of the liquid level meter, and the inner surface of a downward portion of the back panel portion that extends from the lower end of the base end of the outlet toward the lower end of the liquid level meter may be inclined in a direction away from the front surface of the liquid collection bag toward the lower end of the liquid level meter.

[0014] With this configuration, when transferring liquid to the collection bag, if the lower part of the liquid meter is lifted and tilted slightly relative to the horizontal so that the lower part is facing upward, the liquid will flow smoothly toward the outlet from the four different outer sides around the outlet, namely the upper part, two lateral parts, and the lower part of the liquid meter. This eliminates the need to repeatedly change the tilt of the liquid meter, and allows for a smoother transfer of liquid from the liquid meter to the collection bag. [Effects of the Invention]

[0015] According to the liquid collection bag with a liquid level meter of the present invention, liquid can be smoothly transferred from the liquid level meter to the liquid collection bag. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a front view of a urine collection bag with a urine volume meter, which is a liquid collection bag with a liquid volume meter according to an embodiment of the present invention. FIG. [Figure 2] FIG. 2 is a view of the urine collection bag with attached urine volume meter of FIG. 1 as seen from one side in the lateral direction. [Figure 3] FIG. 2 is a perspective view showing a urine volume meter, which is a liquid volume meter, taken out from FIG. [Figure 4] FIG. 4 is a rear view of the urine volume meter of FIG. 3. [Figure 5] FIG. 4 is a top view of the urinary volume meter of FIG. [Figure 6] 6 is a cross-sectional view taken along the line AA in FIG. 5. [Figure 7] 6 is a cross-sectional view taken along the line BB in FIG. 5, with some parts omitted. [Figure 8] 7 is a cross-sectional view taken along line CC in FIG. 6, with some parts omitted. [Figure 9] 6 is a view of the cross section BB in FIG. 5 seen from one lateral side, showing a state in which the lower part of the urine meter is lifted when urine is transferred from the urine meter to a urine collection bag. FIG. [Figure 10] 10 is a view corresponding to FIG. 9, seen from a direction inclined relative to the lateral direction. DETAILED DESCRIPTION OF THE INVENTION

[0017] An example of an embodiment of the present invention will be described in detail below with reference to the drawings. The embodiment described below is merely an example, and the present invention is not limited to the following embodiment. The shapes, materials, etc. described below are examples for explanatory purposes and can be changed as appropriate depending on the specifications of the liquid collection bag with a liquid level meter.

[0018] A urine collection bag 10 with a urine volume meter, which is a liquid collection bag with a liquid volume meter according to an embodiment, will be described using Figures 1 to 10. Figure 1 is a view of the urine collection bag 10 with a urine volume meter as seen from the front. Figure 2 is a view of the urine collection bag 10 with a urine volume meter as seen from one lateral side. In Figures 1 to 8 shown below, the front side, which is the side of the scale 19 when collecting urine in the urine volume meter 12, which is a liquid volume meter, is indicated by F, the left side when viewed from the front is indicated by L, and the upper side is indicated by U. The side opposite the front side of the urine collection bag 10 with a urine volume meter is the rear side, which is the back side.

[0019] As shown in FIGS. 1 and 2, urine collection bag 10 with attached urinary volume meter includes urine volume meter 12 and a urine collection bag 50 connected to urine volume meter 12. Urine collection bag 10 with attached urinary volume meter is used in an operating room, hospital room, etc. to measure the amount of urine discharged from a patient over a predetermined period of time using urine volume meter 12, transfer urine from urine volume meter 12 to urine collection bag 50 after the measurement, and discharge urine from urine collection bag 50 when a certain amount of urine has been stored. This example is characterized in that the shape of back panel 14, which forms the back surface of urine volume meter 12 facing the urine collection bag 50, has been improved to enable smooth transfer of urine from urine volume meter 12 to urine collection bag 50. The following explanation of the configuration of urine collection bag 10 with attached urinary volume meter will be given in terms of the vertical and horizontal relationships of urine collection bag 10 with urine volume meter 12 collecting urine.

[0020] Fig. 3 is a perspective view showing the urinary volume meter 12 removed from Fig. 1. Fig. 4 is a rear view of the urinary volume meter 12, and Fig. 5 is a top view of the urinary volume meter 12. Fig. 6 is a cross-sectional view taken along line AA in Fig. 5. Fig. 7 is a cross-sectional view taken along line BB in Fig. 5, with some parts omitted. Fig. 8 is a cross-sectional view taken along line CC in Fig. 6, with some parts omitted. The urinary volume meter 12 is a hard container integrally formed from a resin material such as transparent polyvinyl chloride resin, and stores urine excreted from a patient inside. The urinary volume meter 12 is integrally formed by blow molding, for example, with approximately the same overall plate thickness.

[0021] As shown in FIGS. 1 and 2, the urinary volume meter 12 is formed in a generally T-shape. Specifically, the urinary volume meter 12 has a generally rectangular parallelepiped large-capacity section 13 that is wide in the left-right direction and thick in the front-to-back direction. A generally rectangular parallelepiped small-capacity section 40, which is narrower in width and thickness than the large-capacity section 13, is connected to the lower side of the large-capacity section 13 via a constricted section 39 that narrows downward. As shown in FIG. 2, the large-capacity section 13 protrudes rearward beyond the small-capacity section 40. This allows the large-capacity section 13 to have a larger volume than the small-capacity section 40. The urinary volume meter 12 is formed to include a rear panel 14 at the rear end, a front panel 30 at the front end, and a peripheral wall 31 that forms the outer periphery. A scale 19 for measuring the amount of urine stored in the urinary volume meter 12 is displayed on the front panel 30. A cylindrical inlet 32 ​​protrudes upward from the top surface of the peripheral wall 31. The lower end of the lower tube 101 is inserted into the inlet 32 ​​to connect the lower tube 101, and the upper tube 103 is connected to the upper end of the lower tube 101 via a connecting tube part 102. The upper end of the upper tube 103 is bent into a substantially L-shape. A urinary catheter (not shown) placed in the patient's bladder is connected to the tip of the upper tube 103 facing laterally. When urine is collected in the urinary volume meter 12, urine is introduced into the urinary volume meter 12 from the inlet 32 ​​via the urinary catheter, upper tube 103, and lower tube 101.

[0022] Both left and right side surfaces of the narrowed portion 39 are inclined downward toward the center in the left and right direction. The back surface of the narrowed portion 39 is inclined downward toward the front. A collection port 41 is provided at the bottom end of the small-capacity portion 40, and is opened when collecting urine for a fresh urine test.

[0023] Meanwhile, a cylindrical outlet 20 is formed at the upper end of the back panel 14 and protrudes toward the back side. The outlet 20 communicates with the inlet of the urine collection bag 50, which will be described later. As shown in Figures 3 and 4, the outlet 20 is cylindrical and has a horizontally elongated oval cross section. The cross section of the outlet may also be circular, rectangular, or the like.

[0024] Furthermore, the back panel 14 of the large-capacity section 13 includes two lateral sections 15 and 16, an upward section 17, and a downward section 18, which extend outward in four directions from the outer periphery of the base end of the outlet 20. Each of the lateral sections 15 and 16, the upward section 17, and the downward section 18 is inclined in a direction away from the front surface of the urine collection bag 50 toward the outer periphery of the urinary volume meter 12. This allows for smooth transfer of urine from the urinary volume meter 12 to the urine collection bag 50. The shape of the back panel 14 of the large-capacity section 13 will be described in detail later.

[0025] The urine collection bag 50 is a soft bag made of a resin material such as polyvinyl chloride resin, and stores urine introduced from the urinary volume meter 12. The urine collection bag 50 is horizontally elongated and approximately rectangular, and is larger than the urinary volume meter 12 in both length in the left-right direction and height when viewed from the front. The urine collection bag 50 is formed, for example, by bonding the outer peripheral edges of two resin sheets together.

[0026] A discharge part 51 for discharging urine is formed at the bottom end of the urine collection bag 50. A discharge tube 52 with a discharge valve is connected to the discharge part 51. Furthermore, a horizontally long latching hole 53 for suspending and supporting the urine collection bag with urinary volume meter 10 is formed at the top end of the urine collection bag 50. The urine collection bag 50 is connected to the urinary volume meter 12 with its front surface facing the back surface of the urinary volume meter 12.

[0027] Next, we will explain in detail the shape of the back panel 14 in the large-capacity section 13 of the urinary volume meter 12. As shown in Figures 3 to 8, the back panel 14 includes an upward section 17 extending from the base end of the outlet 20, two horizontal sections 15 and 16, and a downward section 18.

[0028] The upward portion 17 is a generally triangular flat plate portion of the back panel 14 that extends from the upper end of the base end of the outlet 20 toward the upper end of the urinary volume meter 12. The triangular shape of the upward portion 17 widens in the direction away from the outlet 20. Furthermore, both the inner and outer surfaces of the upward portion 17 are inclined in the direction away from the front surface of the urine collection bag 50 toward the upper end of the urinary volume meter 12.

[0029] The two horizontal portions 15, 16 are generally triangular flat plate portions of the back panel 14 that extend from both left and right ends of the base end of the outlet 20 toward both left and right ends of the urinary volume meter 12. The triangular shape of each horizontal portion 15, 16 widens in a direction away from the outlet 20. Furthermore, both the inner and outer surfaces of each horizontal portion 15, 16 are inclined in a direction away from the front surface of the urine collection bag 50 toward the left and right ends of the urinary volume meter 12.

[0030] The downward portion 18 is a generally triangular flat plate portion of the back panel 14 in the large-capacity section 13 that extends from the lower end of the base end of the outlet 20 toward the lower end of the urinary volume meter 12. The triangular shape of the downward portion 18 widens in the direction away from the outlet 20. Furthermore, the downward portion 18 is inclined in the direction away from the front surface of the urine collection bag 50 toward the lower end of the urinary volume meter 12.

[0031] The outer periphery of the rear surface of the rear plate 14 is smoothly connected to the outer surface of the peripheral wall 31 by chamfering the rear surface to form an arc-shaped cross section.

[0032] The tilt of the back panel 14 allows urine to be transferred smoothly from the urinary volume meter 12 to the urine collection bag 50. This will be explained using Figures 9 and 10. Figure 9 is a view of the cross section BB in Figure 5, seen from one side in the left-right direction, showing the state in which the lower part of the urinary volume meter 12 is lifted when transferring urine from the urinary volume meter 12 to the urine collection bag 50 (Figures 1 and 2). Figure 10 is a view corresponding to Figure 9, seen from a direction tilted relative to the left-right direction.

[0033] When transferring the urine meter 12 to the urine collection bag 50, the lower part of the urine meter 12 is lifted in the direction indicated by arrow P1 in FIGS. 2 and 3 and slightly tilted relative to the horizontal so that the lower part of the urine meter 12 is facing upward, as shown in FIGS. 9 and 10. This positions the upper part 17 of the back panel 14 below the lower part 18. At this time, the inner surface of the upper part 17 is tilted toward the upper end of the urine meter 12 in the urine collection position, away from the front surface of the urine collection bag 50. Therefore, when the urine meter 12 is tilted as shown in FIGS. 9 and 10, the inner surface of the upper part 17 is likely to be tilted so that its upper end is higher than its lower end on the outlet 20 side. This tilt of the upper part 17 facilitates a smooth flow of urine from the inner surface of the upper part 17 toward the outlet 20. Specifically, urine that has collected near the upward portion 17 around the base end of the outlet 20 of the urinary volume meter 12 flows smoothly along the inner surface of the upward portion 17 to the outlet 20 as shown by arrow α in Figures 9 and 10, facilitating transfer from the outlet 20 to the urine collection bag 50. This allows for smooth transfer of urine from the urinary volume meter 12 to the urine collection bag 50. Furthermore, by orienting the outlet 20 of the urinary volume meter 12 directly downward, urine present near the upward portion 17 of the urinary volume meter 12 can be smoothly flowed to the outlet 20.

[0034] 9 and 10 , the inner surfaces of the two horizontal portions 15, 16 are inclined toward the left and right ends of the urinary volume meter 12 and away from the front surface of the urine collection bag 50. Therefore, when the urinary volume meter 12 is tilted so that the tip of the outlet 20 faces diagonally downward as shown in FIGS. 9 and 10 , urine that has collected on both sides of the outlet 20 side of the urinary volume meter 12 flows smoothly from the inner surfaces of the horizontal portions 15 to the outlet 20, as indicated by arrows β in FIGS. 9 and 10 , and is easily transferred from the outlet 20 to the urine collection bag 50. Furthermore, by orienting the outlet 20 directly downward on the urinary volume meter 12, urine present on both sides of the outlet 20 side of the urinary volume meter 12 can also be smoothly transferred to the outlet 20. This allows urine to be transferred more smoothly from the urinary volume meter 12 to the urine collection bag 50. 9 and 10 show only one lateral portion 15 of the two lateral portions 15, 16, but the other lateral portion 16 also allows urine to flow smoothly along the inner surface to the outlet 20 in the same manner.

[0035] Furthermore, in the state shown in FIGS. 9 and 10 , the inner surface of the downward portion 18 is inclined toward the lower end of the urinary volume meter 12 in the urine collection posture, away from the front surface of the urine collection bag 50. Therefore, when the urinary volume meter 12 is tilted as shown in FIGS. 9 and 10 , the inner surface of the downward portion 18 is likely to be significantly inclined so that the lower end is higher than the upper end on the outlet 20 side. This inclination of the downward portion 18 facilitates smooth flow of urine from the inner surface of the downward portion 18 toward the outlet 20. Specifically, urine around the base end of the outlet 20 of the urinary volume meter 12 near the downward portion 18 flows smoothly along the inner surface of the downward portion 18 to the outlet 20 as shown by arrow γ in FIGS. 9 and 10 , facilitating transfer of urine from the outlet 20 to the urine collection bag 50. This allows for smoother transfer of urine from the urinary volume meter 12 to the urine collection bag 50.

[0036] In this example, the back panel of the urinary volume meter 12 is inclined away from the front surface of the urine collection bag 50, sandwiching the outlet, in top-bottom and left-right cross-sectional views. Specifically, the urinary volume meter 12 has two horizontal portions 15 and 16, an upper portion 17, and a lower portion 18, and each of the horizontal portions 15 and 16, the upper portion 17, and the lower portion 18 is inclined toward the outer periphery of the urinary volume meter 12, in a direction away from the front surface of the urine collection bag 50. This allows urine to flow smoothly toward the outlet 20 from the four different outer sides around the outlet, namely, the upper portion 17, the two horizontal portions 15 and 16, and the lower portion 18, when the lower portion of the urinary volume meter 12 is lifted and slightly tilted with the lower portion facing upward relative to the horizontal, as described above. This eliminates the need to repeatedly change the tilt of the urinary volume meter 12, and allows urine to be transferred more smoothly from the urinary volume meter 12 to the urine collection bag 50.

[0037] Although not shown in the drawings, in another example of the embodiment, the back panel portion around the base end of the outlet may be configured to have a bowl shape with the base end of the outlet as the apex, or a partially spherical shape that forms part of a sphere. In this case, too, two horizontal portions of the back panel portion extending from both lateral ends of the base end of the outlet toward the left and right ends of the urinary volume meter are inclined in a direction away from the front surface of the urine collection bag toward the left and right ends of the urinary volume meter.

[0038] In addition, in the above embodiment, the liquid collection bag with liquid volume meter is described as a urine collection bag with urine volume meter 10 that measures the amount of urine discharged from a patient as a liquid, stores the liquid, and discharges it, but it may also be configured to be used to measure the amount of body fluid discharged other than urine, store the liquid, and discharge it.

[0039] Furthermore, in the above embodiment, the overall shape of the liquid meter is described as being approximately T-shaped, but the overall shape of the liquid meter is not limited to this. For example, the overall shape of the liquid meter may be an approximately square pyramid shape that tapers downward, or a cylindrical shape that does not taper downward. Furthermore, in the above embodiment, the flow meter is described as being integrally molded, but the flow meter may be formed by combining two or more parts. Furthermore, the vicinity of the diameter outlet may be curved or inclined to facilitate the flow of liquid into the outlet. [Explanation of symbols]

[0040] 10 Urine collection bag with urinary volume meter, 12 Urine volume meter, 13 Large capacity section, 14 Back panel section, 15, 16 Horizontal sections, 17 Upper section, 18 Lower section, 19 Memory, 20 Outlet, 30 Front panel section, 31 Peripheral wall section, 32 Inlet, 39 Constriction section, 40 Small capacity section, 41 Collection port, 50 Urine collection bag, 51 Discharge section, 52 Discharge tube, 53 Locking hole, 60 Urine volume meter, 61 Large capacity section, 62 Back panel section, 63 T-shaped protrusion, 64 Body section, 65 Arm section, 101 Lower tube, 102 Connecting tube section, 103 Upper tube.

Claims

1. A liquid meter, a liquid collection bag having a front surface facing the back surface of the liquid meter and connected to the liquid meter, the liquid level meter has an inlet to which a tube is connected, and an outlet formed on the rear surface so as to protrude in a cylindrical shape and communicating with the inlet of the liquid collection bag; the back panel portion forming the back surface of the liquid meter has an inner surface of an upward portion extending from the upper end of the base end of the outlet toward the upper end of the liquid meter, the inner surface of the upward portion being inclined in a direction away from the front surface of the liquid collection bag toward the upper end of the liquid meter; the back panel portion has two lateral portions, each extending from both lateral ends of the outlet base end toward the lateral end of the liquid meter, each of which has an inner surface that is inclined in a direction away from the front surface of the liquid collection bag toward the lateral end of the liquid meter; The outlet is provided in the horizontal center of the back panel portion and has a cylindrical cross-sectional shape that is longer in the horizontal direction than in the vertical direction. Fluid collection bag with liquid level meter.

2. A liquid meter, a liquid collection bag having a front surface facing the back surface of the liquid meter and connected to the liquid meter, the liquid level meter has an inlet to which a tube is connected, and an outlet formed in a cylindrical shape protruding from the center in the left-right direction of the back surface and communicating with the inlet of the liquid collection bag; the back panel portion forming the back surface of the liquid meter has an inner surface of an upward portion extending from the upper end of the base end of the outlet toward the upper end of the liquid meter, the inner surface of the upward portion being inclined in a direction away from the front surface of the liquid collection bag toward the upper end of the liquid meter; The liquid level meter has a substantially rectangular parallelepiped small-capacity section connected to a lower side of a large-capacity section in which the outlet is formed and whose maximum horizontal length is greater than its vertical length, the small-capacity section having a horizontal width smaller than that of the large-capacity section and a volume smaller than that of the large-capacity section, the back panel portion has two lateral portions, each extending from both lateral ends of the outlet base end toward the lateral end of the liquid meter, each of which has an inner surface that is inclined in a direction away from the front surface of the liquid collection bag toward the lateral end of the liquid meter; Boundaries between the upper portion and each of the two lateral portions extend from corners at both lateral ends of the upper end of the large-capacity portion toward the base end of the outlet. Fluid collection bag with liquid level meter.

3. A liquid meter, a liquid collection bag having a front surface facing the back surface of the liquid meter and connected to the liquid meter, the liquid level meter has an inlet to which a tube is connected, and an outlet formed on the rear surface so as to protrude in a cylindrical shape and communicating with the inlet of the liquid collection bag; the back panel portion forming the back surface of the liquid meter has an inner surface of an upward portion extending from the upper end of the base end of the outlet toward the upper end of the liquid meter, the inner surface of the upward portion being inclined in a direction away from the front surface of the liquid collection bag toward the upper end of the liquid meter; The liquid meter has a substantially rectangular parallelepiped small-capacity section, which has a smaller lateral width and a smaller volume than the large-capacity section, connected to the lower side of the large-capacity section in which the outlet is formed via a throttle section, The narrowed portion has a width in the lateral direction and a thickness in the front-rear direction that decrease downward, the back panel portion has two lateral portions, each extending from both lateral ends of the outlet base end toward the lateral end of the liquid meter, each of which has an inner surface that is inclined in a direction away from the front surface of the liquid collection bag toward the lateral end of the liquid meter; an edge of the inner surface of the upper portion opposite to the outlet and an edge of the inner surface of each of the two lateral portions opposite to the outlet are provided between the outer periphery of the front surface and the outer periphery of the back surface of the large-capacity portion and are directly connected to a peripheral wall portion along the thickness direction of the large-capacity portion; Fluid collection bag with liquid level meter.

4. The liquid collection bag with a liquid level meter according to any one of claims 1 to 3, the back panel portion has an inner surface of a downward portion extending from the lower end of the base end of the outlet toward the lower end of the liquid meter, the inner surface being inclined in a direction away from the front surface of the liquid collection bag toward the lower end of the liquid meter. Fluid collection bag with liquid level meter.

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