Drainage system

Abstract

To provide a drainage system capable of reducing a frequency of going to see the situation of a cerebrospinal fluid accumulated inside a chamber and preventing delay of confirmation and treatment of abnormality occurrence as well.SOLUTION: A drainage system 11 comprises: a chamber 30 capable of storing a cerebrospinal fluid; a monitoring device 50 which comprises a sensor 51 for detecting the height of the liquid level of the cerebrospinal fluid accumulated inside the chamber 30 and is attachable to and detachable from the chamber 30; and a control unit 53 configured to emit a first signal when the liquid level comes to a first predetermined level or higher.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a drainage system used when performing cerebrospinal fluid drainage.

Background Art

[0002] Conventionally, when performing cerebrospinal fluid drainage, a cerebrovascular drainage chamber described in Patent Document 1 is used, in which an inflow tube and a discharge tube are attached in parallel to the lower part of a chamber body that is suspended and attached at a predetermined height position, and an air vent tube having an air filter is attached to the upper part of the chamber body.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the drainage chamber described in Patent Document 1, when cerebrospinal fluid mixed with blood is excessively stored inside the chamber, the cerebrospinal fluid contacts and infiltrates the filter, causing the filter to become clogged, or when the clamp is forgotten to be released and ventilation through the air holes is not performed, if the drainage of cerebrospinal fluid is continued, the inside of the chamber becomes negative pressure, causing a siphoning phenomenon and over-drainage (excessive drainage of cerebrospinal fluid). In order to appropriately respond to the above situation, conventionally, medical staff visually confirmed the height of the cerebrospinal fluid level accumulated inside the chamber, the rise and fall of the cerebrospinal fluid level, the presence or absence of pulsation, and the presence or absence of dripping of cerebrospinal fluid from the dropping port inside the chamber at regular time intervals. For this reason, it was necessary to frequently check the situation of the cerebrospinal fluid accumulated inside the chamber. In addition, forgetting to set the timer may cause forgetting to check the situation of the cerebrospinal fluid accumulated inside the chamber, and the confirmation and treatment of abnormal occurrences may be delayed.

[0005] The present invention has been made in view of the above circumstances, and an object thereof is to provide a drainage system capable of reducing the number of times of checking the situation of cerebrospinal fluid accumulated inside the chamber and easily preventing the delay in confirmation and treatment of abnormal occurrences.

Means for Solving the Problems

[0006] The drainage system of the present invention that has solved the above problems is as follows. [1] A chamber capable of storing cerebrospinal fluid, A monitoring device having a sensor unit for detecting the height of the cerebrospinal fluid level accumulated inside the chamber and being detachable from the chamber, A control unit configured to emit a first signal when the liquid level reaches a first predetermined height or more.

[0007] Since the monitoring device has a sensor unit that detects the presence of cerebrospinal fluid accumulated inside the chamber, it is possible to monitor whether or not the height of the liquid level of the cerebrospinal fluid accumulated inside the chamber has reached a predetermined height or more. And since the control unit is configured to issue a first signal when the liquid level of the cerebrospinal fluid accumulated inside the chamber reaches a first predetermined height or more, medical staff can go to the patient's place and take corresponding measures when the first signal is issued. As a result, medical staff can reduce the number of times they go to check the situation of the cerebrospinal fluid accumulated inside the chamber, and it is also easy to prevent the confirmation and treatment of abnormalities from being delayed due to forgetting to go and check. For this reason, it is possible to reduce the workload of the tasks related to the monitoring and adjustment of the chamber and the tasks related to recording that medical staff perform daily, and to improve efficiency.

[0008] The drainage system according to an embodiment of the present invention is preferably any one of the following [2] to

[11] .

[0009] [2] The drainage system according to [1], further comprising an introduction path disposed inside the chamber and having a dropping port for dropping cerebrospinal fluid. [3] The chamber has an air hole communicating the outside and the inside of the chamber above the dropping port, a filter is disposed in the air hole, The drainage system according to [2], wherein the first predetermined height is below the filter and above the lower end of the chamber. [4] The drainage system according to [2] or [3], wherein the first predetermined height is above the dropping port. [5] The drainage system according to any one of [1] to [4], wherein the control unit is configured to issue a second signal when the liquid level becomes equal to or lower than a second predetermined height lower than the first predetermined height. [6] The drainage system has an introduction path disposed inside the chamber and having a dripping port for dripping cerebrospinal fluid. The drainage system according to [5], wherein the second predetermined height is below the dripping port and above the lower end of the chamber. [7] The drainage system has a long member provided with a scale and extending in the vertical direction. The control unit is configured to determine a second height at which the sensor unit and the chamber are disposed based on a change amount of the height of the liquid surface when the cerebrospinal fluid is dripped for a first predetermined time in a state where the sensor unit and the chamber are located at a first height, according to any one of [1] to [6]. [8] The monitoring device has an output unit. The output unit converts the first signal into at least one of visual information, auditory information, and vibration information and outputs it, according to any one of [1] to [7]. [9] The drainage system has an output unit disposed at a position away from the monitoring device and the chamber. The output unit is a terminal that converts the first signal into at least one of visual information, auditory information, and vibration information and outputs it, according to any one of [1] to [7].

[10] The terminal has a monitor. The monitor displays information related to the location where the monitoring device is present and / or information related to the patient for whom the monitoring device is used, according to [9].

[11] The information related to the location where the monitoring device is present is the position of the monitoring device shown on a map or the name of the location where the monitoring device is present, according to

[10] .

Advantages of the Invention

[0010] The drainage system according to an embodiment of the present invention can reduce the number of times of checking the status of cerebrospinal fluid accumulated inside the chamber, and can also easily prevent the delay in the confirmation and treatment of abnormalities due to forgetting to check.

Brief Description of Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0012] Hereinafter, the present invention will be specifically described with reference to the drawings. However, the present invention is not limited to the illustrated examples, and it is also possible to appropriately modify and implement within the range that can conform to the gist of the foregoing and following descriptions, and all of them are included in the technical scope of the present invention. In each figure, for convenience, hatching, reference signs, etc. may be omitted, but in such cases, reference shall be made to the specification and other figures. Also, the dimensions of various components in the drawings may differ from the actual dimensions because priority is given to facilitating the understanding of the features of the present invention.

[0013] The drainage system of the present invention will be described with reference to FIGS. 1 to 5.

[0014] In this specification and the drawings, in the usage state of the drainage system, the direction indicating the horizontal direction is denoted as x, and the direction indicating the vertical direction is denoted as y. Further, when each member or each part is bisected in the vertical direction y, the upper part of each member or each part is referred to as the upper part of each member or each part, and the lower part of each member or each part is referred to as the lower part of each member or each part. The lower end of each member or each part is the end located at the lowest position among each member or each part. The upper end of each member or each part is the end located at the highest position among each member or each part. The end portion includes the peripheral portion of the end. That is, the lower end portion refers to the lower end and the peripheral portion of the lower end, and the upper end portion refers to the upper end and the peripheral portion of the proximal end.

[0015] The drainage system according to an embodiment of the present invention has a chamber capable of storing cerebrospinal fluid, a monitoring device that is detachable from the chamber and has a sensor unit for detecting the height of the liquid surface of the cerebrospinal fluid accumulated inside the chamber, and a control unit configured to issue a first signal when the liquid surface reaches a first predetermined height or more.

[0016] As shown in FIGS. 1 to 4, the drainage system 11 has a chamber 30, a monitoring device 50, and a control unit 53.

[0017] The chamber 30 is a container capable of storing cerebrospinal fluid 60. At least cerebrospinal fluid 60 is stored in the chamber 30. The cerebrospinal fluid 60 may be mixed with blood or the like.

[0018] The monitoring device 50 has a sensor unit 51 for detecting the height of the liquid surface 61 of the cerebrospinal fluid 60 accumulated inside the chamber 30. The monitoring device 50 is detachable from the chamber 30. By configuring the monitoring device 50 to be detachable from the chamber 30, the monitoring device 50 can be attached to the chamber 30 of another patient and reused. Therefore, it becomes an environmentally friendly and economical monitoring device 50.

[0019] The control unit 53 is configured to issue a first signal when the liquid level 61 of the cerebrospinal fluid 60 reaches or exceeds a first predetermined height.

[0020] Since the monitoring device 50 has the sensor unit 52 that detects the presence of the cerebrospinal fluid 60 accumulated inside the chamber 30, it is possible to monitor whether or not the height of the liquid level 61 of the cerebrospinal fluid 60 accumulated inside the chamber 30 has reached or exceeded a predetermined height. And since the control unit 53 is configured to issue a first signal when the liquid level 61 of the cerebrospinal fluid 60 accumulated inside the chamber 30 reaches or exceeds the first predetermined height, medical staff only needs to go to the patient's place and take corresponding measures when the first signal is issued. As a result, medical staff can reduce the number of times they go to check the situation of the cerebrospinal fluid 60 accumulated inside the chamber 30, and it is also easy to prevent the confirmation and treatment of abnormalities from being delayed due to forgetting to go and check. For this reason, it is possible to reduce the workload of the monitoring and adjustment work and the recording work related to the chamber 30 that medical staff perform daily, and improve the efficiency.

[0021] The chamber 30 can be of any shape capable of storing liquid. For example, the chamber 30 may be cylindrical, bag-shaped, or the like. The outer shape of the chamber 30 in a cross-section perpendicular to the vertical direction y may be, for example, a circle such as a circle or an ellipse, a polygon such as a square, a rectangle, a pentagon, etc., a rounded polygon with rounded corners, a combination of these, or an irregular shape, etc.

[0022] The chamber 30 is preferably made of a material having light transmissibility. This makes it easy to observe and / or detect the cerebrospinal fluid 60 from the outside of the chamber 30. The chamber 30 may be transparent or translucent, but being transparent is more preferable. The chamber 30 can be formed of synthetic resin, glass, or the like.

[0023] As shown in FIGS. 1 and 4, a scale 81 may be formed in the chamber 30. The scale 81 attached to the chamber 30 is preferably engraved in the vertical direction y. This makes it possible to easily visually confirm the amount of cerebrospinal fluid 60 accumulated inside the chamber 30.

[0024] The monitoring device 50 is configured to be detachable from the chamber 30. For example, the monitoring device 50 may have a clip-like shape. Thereby, the monitoring device 50 can grip and release the chamber 30 by sandwiching it. The monitoring device 50 has a through-hole penetrating in the vertical direction y, and may be configured to be detachable by inserting and removing the chamber 30 through the through-hole. The monitoring device 50 has a first fitting portion, the chamber 30 has a second fitting portion that fits with the first fitting portion, and the monitoring device 50 may be configured to be detachable from the chamber 30 by configuring the first fitting portion and the second fitting portion to be detachable. The monitoring device 50 may have a fixing member such as a belt, and the monitoring device may be configured to be detachable from the chamber 30 by the fixing member.

[0025] The shape of the monitoring device 50 may be any shape as long as it is detachable from the chamber 30 as described above, but from the viewpoints of ease of handling by medical staff and reduction of damage to other members and instruments, it is preferably a rounded shape.

[0026] As the sensor unit 51, for example, an optical sensor, a camera, an ultrasonic sensor, a milli-microwave sensor, a pressure sensor, a vibration sensor, a dielectric constant sensor, a temperature sensor, a microphone, or a combination thereof can be used. Among them, it is preferable to use an optical sensor and / or a camera as the sensor unit 51.

[0027] When an optical sensor is used as the sensor unit 51, as shown in FIGS. 2 and 3, it is preferable that the sensor unit 51 includes a light-emitting element 51a and a light-receiving element 51b that receives the light emitted by the light-emitting element 51a. By measuring, with the light-receiving element 51b, the intensity of the light that has passed through the target area after being emitted by the light-emitting element 51a or the intensity of the light that has been reflected by the target area after being emitted by the light-emitting element 51a, the liquid surface 61 of the cerebrospinal fluid 60 in the target area can be detected. The light-emitting element 51a preferably emits light having a wavelength in the range from infrared light to visible light. Only one light-emitting element 51a may be provided, or a plurality of light-emitting elements 51a may be provided. The light-receiving element 51b may be an RGB sensor. Since the light-receiving element 51b is an RGB sensor, when the cerebrospinal fluid 60 is present in the target area, information regarding the color of the cerebrospinal fluid 60 can be obtained. From the information regarding the color of the cerebrospinal fluid 60, it is possible to grasp the pathological condition such as whether there is an abnormality such as inflammation or infection in the affected area.

[0028] When a camera is used as the sensor unit 51, it is preferable that the sensor unit 51 includes an imaging element. Since the imaging element can image the liquid surface 61 and the liquid droplets 62, it is possible to easily grasp the state such as the position of the liquid surface 61 and the color of the cerebrospinal fluid 60, and the presence or absence of pulsation. However, when a camera is used as the sensor unit 51, the configuration of the monitoring device 50 becomes complicated. Therefore, it is preferable that the sensor unit 51 includes an optical sensor, and it is also preferable that information regarding the color of the cerebrospinal fluid 60 is obtained by the optical sensor.

[0029] In addition to the above-described optical sensor and camera, a vibration sensor can also be used in combination. The presence or absence of pulsation can be easily detected by the vibration sensor.

[0030] It is preferable that the sensor unit 51 does not come into direct contact with the cerebrospinal fluid 60. It is more preferable to detect the liquid surface 61 of the cerebrospinal fluid 60 in a state where the entire monitoring device 50 is disposed outside the chamber 30. Thereby, it is possible to prevent the sensor unit 51 from being contaminated by the cerebrospinal fluid 60.

[0031] The drainage system 11 preferably has an introduction path 40 disposed inside the chamber 30. The introduction path 40 is a part that constitutes a path for the cerebrospinal fluid 60 to be stored inside the chamber 30 within the chamber 30. The introduction path 40 has a dropping port 41 for dropping the cerebrospinal fluid 60 inside the chamber 30. Note that the chamber 30 preferably can store the cerebrospinal fluid 60 dropped from the dropping port 41.

[0032] The introduction path 40 preferably includes a flexible tube formed of a synthetic resin such as silicone resin or a rubber such as synthetic rubber. The tube may be constituted by only one tubular member, or may be constituted by connecting a plurality of tubular members.

[0033] The drainage system 11 may be disposed outside the chamber 30 and have a drainage catheter 45 connected to the introduction path 40. Thereby, the introduction path 40 can be indirectly connected to the human body via the drainage catheter 45.

[0034] One end of the drainage catheter 45 is connected to the introduction path 40, and the other end of the drainage catheter 45 is preferably inserted into a target site for discharging the cerebrospinal fluid 60. More specifically, the end of the drainage catheter 45 located on the side opposite to the end to which the introduction path 40 is connected is preferably inserted into the skull through a small incision formed in the patient's head.

[0035] As shown in FIGS. 1 to 4, the chamber 30 has an air hole 32 communicating the outside of the chamber 30 and the inside of the chamber 30 above the dropping port 41, and a filter 33 is preferably disposed in the air hole 32. By disposing the filter 33 in the air hole 32, it is possible to prevent foreign matter from entering the inside of the chamber 30 while allowing ventilation from the air hole 32.

[0036] As shown in FIGS. 1 to 4, the air hole 32 is preferably located above the dropping port 41. Thereby, it is possible to make it difficult for the cerebrospinal fluid 60 accumulated inside the chamber 30 to contact the filter 33.

[0037] As shown in FIGS. 1 and 2, the air hole 32 may be the opening 35 that the chamber 30 has. As shown in FIG. 2, the opening 35 constituting the air hole 32 may be the end of the tubular portion 35a that the chamber 30 has. The tubular portion 35a preferably has a bent portion. The material constituting the tubular portion 35 and the material constituting the portion other than the tubular portion 35 of the chamber 30 may be the same or different.

[0038] As shown in FIG. 2, a clamp 70 may be attached to the cylindrical portion 35a. By opening and closing the clamp 70, the communication between the outside and the inside of the chamber 30 can be opened and closed.

[0039] The first predetermined height is preferably below the filter 33 and above the lower end of the chamber 30. By setting the first predetermined height below the filter 33, it is possible to easily detect that the liquid level has not reached the height where the filter 33 is located before. Thereby, it becomes easy to prevent the filter 33 from being clogged and causing over-drainage. Also, it becomes easy to prevent the cerebrospinal fluid 60 from leaking from the air hole 32 beyond the filter 33.

[0040] The first predetermined height is preferably located above the dropping port 41. By setting the first predetermined height above the dropping port 41, it becomes possible to store a relatively large amount of cerebrospinal fluid 60 in the chamber 30 until the cerebrospinal fluid 60 is detected. For this reason, it becomes easy to reduce the number of times medical staff go to check the internal situation of the chamber 30.

[0041] The control unit 53 is preferably configured to issue a second signal when the liquid level 61 of the cerebrospinal fluid 60 becomes equal to or lower than a second predetermined height that is lower than the first predetermined height. When a situation occurs where the drainage catheter 45 inserted into the patient's head is removed or cerebrospinal fluid 60 leaks from an unintended part, the height of the liquid level 61 of the cerebrospinal fluid 60 accumulated inside the chamber 30 decreases. Since the control unit 53 is configured to issue a second signal after the height of the liquid level 61 of the cerebrospinal fluid 60 accumulated inside the chamber 30 becomes equal to or lower than the second predetermined height, medical staff can know that the above situation is occurring when the second signal is issued. For this reason, it is possible for medical staff to easily reduce the number of times they go to check the height of the liquid level 61 of the cerebrospinal fluid 60 accumulated inside the chamber 30.

[0042] The sensor unit 51 preferably has a function of measuring a time interval. Thereby, it is possible to detect that the height of the liquid level 61 of the cerebrospinal fluid 60 accumulated inside the chamber 30 has not changed during a predetermined time interval, that the height of the liquid level 61 of the cerebrospinal fluid 60 inside the chamber 30 does not become equal to or higher than the first predetermined height, that the height of the liquid level 61 of the cerebrospinal fluid 60 inside the chamber 30 does not become equal to or lower than the second predetermined height, and so on.

[0043] The second predetermined height is preferably located below the drip port 41 and above the lower end of the chamber 30. By setting the second predetermined height to be below the drip port 41, it is possible to more easily detect a significant rise or fall in the height of the liquid level 61 of the cerebrospinal fluid 60 accumulated inside the chamber 30 and the stop of the change in the height of the liquid level 61 of the cerebrospinal fluid 60 earlier.

[0044] The chamber 30 shown in FIGS. 1 to 3 can store the cerebrospinal fluid 60 dropped from the dropping port 41, and is preferably disposed above the patient's outer ear. By attaching the monitoring device 50 to this chamber 30, it is possible to monitor whether the height of the liquid level 61 of the cerebrospinal fluid 60 accumulated inside the chamber 30 has reached or exceeded a first predetermined height or has reached or fallen below a second predetermined height. Thereby, it is possible to know that a situation has occurred such as over-drainage, the drainage catheter 45 inserted into the patient's head has been removed, or the cerebrospinal fluid 60 has leaked from an unintended part.

[0045] As shown in FIG. 4, the drainage system 11 may have a first chamber 301 and a second chamber 302 as chambers 30 capable of storing the cerebrospinal fluid 60 dropped from the dropping port 41. More specifically, the drainage system 11 may have a first chamber 301 disposed above the patient's outer ear and a second chamber 302 connected to the first chamber 301 and disposed below the patient's outer ear. By attaching the monitoring device 50 to the first chamber 301, it is possible to monitor whether the height of the liquid level 61 of the cerebrospinal fluid 60 accumulated inside the first chamber 301 has reached or exceeded a first predetermined height or has reached or fallen below a second predetermined height. Thereby, it is possible to know that a situation has occurred such as over-drainage, the drainage catheter 45 inserted into the patient's head has been removed, or the cerebrospinal fluid 60 has leaked from an unintended part. By attaching the monitoring device 50 to the second chamber 302, it is possible to monitor whether the height of the liquid level 61 of the cerebrospinal fluid 60 accumulated inside the second chamber 302 has reached or exceeded a first predetermined height. Thereby, it is possible to prevent the cerebrospinal fluid 60 from overflowing from the second chamber 302 and contaminating the hospital room floor.

[0046] The position where the monitoring device 50 is attached is not particularly limited. For example, as shown in FIG. 2, the monitoring device 50 may be attached to the chamber 30 such that the light emitting element 51a and the light receiving element 51b are located above the dropping port 41. As shown in FIG. 4, the monitoring device 50 may be attached to the chamber 30 such that the light emitting element 51a and the light receiving element 51b are located below the dropping port 41.

[0047] As shown in FIG. 3, the sensor unit 51 may include an upper light emitting element 511, an upper light receiving element 512 that receives the light emitted by the upper light emitting element 511, a lower light emitting element 513 that is located below the upper light emitting element 511 and the upper light receiving element 512, and a lower light receiving element 514 that is located below the upper light emitting element 511 and the upper light receiving element 512 and receives the light emitted by the lower light emitting element 513. The monitoring device 50 may be attached to the chamber 30 such that the upper light emitting element 511 and the upper light receiving element 512 are located above the dropping port 41, and the lower light emitting element 513 and the lower light receiving element 514 are located below the dropping port 41. In this case, for example, the upper light emitting element 511 and the upper light receiving element 512 may monitor whether the liquid level 61 of the cerebrospinal fluid 60 has reached a first predetermined height or more, and the lower light emitting element 513 and the lower light receiving element 514 may monitor whether the liquid level 61 of the cerebrospinal fluid 60 has reached a second predetermined height or less.

[0048] The drainage system 11 preferably includes a scale 81 and has a long member 75 extending in the vertical direction y. By using the long member 75, the drainage rate of the cerebrospinal fluid 60, the adjustment, monitoring, and recording of the intracranial pressure can be easily performed. Further, the control unit 53 is preferably configured to determine a second height at which the sensor unit 51 and the chamber 30 are disposed based on the amount of change in the height of the liquid level 61 when the cerebrospinal fluid 60 is dropped for a first predetermined time while the sensor unit 51 and the chamber 30 are located at a first height. Thereby, medical staff can grasp the appropriate height at which the chamber 30 is disposed as the second height without having to calculate it themselves.

[0049] The second height may be calculated by computer calculation, or a database prepared in advance may be stored in the memory unit 54 so that corresponding values can be derived.

[0050] When the monitoring device 50 is attached to the chamber 30, it preferably has a visible portion 52 (hereinafter referred to as the visible portion 52) between the upper end and the lower end of the monitoring device 50 for visually recognizing the storage state of the cerebrospinal fluid 60 inside the chamber 30. Thereby, while detecting the presence of the cerebrospinal fluid 60 by the sensor unit 51 of the monitoring device 50, the state inside the chamber 30 can also be visually confirmed at the position where the monitoring device 50 is attached, so that the monitoring of the chamber 30 can be performed more easily.

[0051] The visible portion 52 may be an opening that the monitoring device 50 has as shown in FIG. 1, or may be a gap that the monitoring device 50 has between its upper end and lower end as shown in FIG. 3.

[0052] In order to confirm the installation state and installation position of the chamber 30, the monitoring device 50 may have at least one of a pressure sensor, an acceleration sensor, and a gyro sensor.

[0053] As shown in FIG. 4, the drainage system 11 may have a drainage bag 80. Thereby, the cerebrospinal fluid 60 accumulated inside the chamber 30 can be discharged into the drainage bag 80. By monitoring the situation of the cerebrospinal fluid 60 dropped by the monitoring device 50, the clamp 70 provided at the lower end of the chamber 30 can be opened to discharge the cerebrospinal fluid 60 from the chamber 30 into the drainage bag 80 before the cerebrospinal fluid 60 overflows from the chamber 30.

[0054] The drainage bag 80 preferably has a bag shape capable of storing the cerebrospinal fluid 60 discharged from the chamber 30. As shown in FIG. 4, the drainage bag 80 may have a recess 85 in which the chamber 30 can be disposed. Thereby, the shape when the drainage bag 80 and the chamber 30 are connected can be made compact, and it becomes easy to arrange them on the patient's bedside.

[0055] As shown in FIG. 4, it is preferable that the drainage bag 80 has a scale 81 formed thereon. The scale 81 attached to the drainage bag 80 is preferably engraved in the vertical direction y. Thereby, the amount of the cerebrospinal fluid 60 discharged from the chamber 30 can be known.

[0056] The drainage bag 80 preferably has an air hole 82 that communicates the inside and the outside of the drainage bag 80, and a filter 83 is preferably disposed in the air hole 82. The air hole 82 may be an opening formed in the drainage bag 80. The air hole 82 may be the lumen of a tubular member inserted into the drainage bag 80. The material constituting the tubular member may be the same as or different from the material constituting the drainage bag 80. By disposing one end of the tubular member inside the drainage bag 80 and the other end of the tubular member outside the drainage bag 80, the inside and the outside of the drainage bag 80 can be configured to communicate with each other through the air hole 82. A clamp 70 may be disposed on the tubular member constituting the air hole 82, and the communication between the inside and the outside of the drainage bag 80 can be opened and closed by opening and closing the clamp 70.

[0057] The drainage bag 80 preferably has a handle hole 84. By hooking a handle such as a hanger or a string on the handle hole 84, the drainage bag 80 can be easily installed below the patient's outer ear.

[0058] The drainage system 11 may have an output unit 55 that converts the first signal into at least one of visual information, auditory information, and vibration information and outputs it. This facilitates prompt response by medical staff.

[0059] Examples of the configuration of the output unit 55 that converts the first signal into visual information and outputs it include a terminal 65, a monitor, a light, etc.

[0060] Examples of the configuration of the output unit 55 that converts the first signal into auditory information and outputs it include a speaker, etc.

[0061] Examples of the configuration of the output unit 55 that converts the first signal into vibration information and outputs it include a vibrator, etc.

[0062] The output unit 55 may convert the second signal into at least one of visual information, auditory information, and vibration information and output it. This facilitates prompt response by medical staff.

[0063] As shown in FIG. 3, the monitoring device 50 may have the output unit 55.

[0064] As shown in FIG. 1, the drainage system 11 may have an output unit 55 disposed at a position away from the monitoring device 50 and the chamber 30. From the perspective of convenience, the output unit 55 is preferably a terminal 65 that converts the first signal into at least one of visual information, auditory information, and vibration information and outputs it.

[0065] Examples of the terminal 65 include a personal computer, a smartphone, a tablet, a PHS, a mobile phone, a nurse call system, etc. As shown in FIG. 5, the terminal 65 has a monitor 66, and the monitor 66 preferably displays information related to the location where the monitoring device 50 is located and / or information related to the patient for whom the monitoring device 50 is used.

[0066] In addition to the above, the monitor 66 of the terminal 65 may display information regarding the storage status of the cerebrospinal fluid 60 from the monitoring device 50. As information regarding the storage status of the cerebrospinal fluid 60, for example, when the first signal is issued, the monitor 66 may display that the height of the liquid surface 61 of the cerebrospinal fluid 60 has reached or exceeded a first predetermined height. When the second signal is issued, the monitor 66 may display that the height of the liquid surface 61 of the cerebrospinal fluid 60 has become equal to or less than a second predetermined height. Further, the monitor 66 may display the amount of the cerebrospinal fluid 60 accumulated inside the chamber 30.

[0067] The information related to the location where the monitoring device 50 is located is preferably the position of the monitoring device 50 shown on a map or the name of the location where the monitoring device 50 is located. Examples of the name of the location where the monitoring device 50 is located include, for example, the room number or symbol of the hospital room where the monitoring device 50 is located, the name of the ward building, the name of the room, or a combination thereof.

[0068] As means for acquiring information related to the position where the monitoring device 50 is located, a GPS sensor, Bluetooth (registered trademark), Wi-Fi (registered trademark), a magnetic sensor, an atmospheric pressure sensor, an acceleration sensor, a gyro sensor, or a combination thereof can be used.

[0069] Examples of the information related to the patient for whom the monitoring device 50 is used include the name, age, gender, disease name of the patient for whom the monitoring device 50 is used, or a combination thereof.

[0070] For the purpose of improving the connection status of communication between the output unit 55 that converts and outputs at least one of visual information, auditory information, and vibration information, improving the security by multiplexing the connection, expanding the communication range, and suppressing the power consumption required for communication, etc., it is preferable to use a relay communication device that relays the communication between the monitoring device 50 and the output unit 55. As the relay communication device, for example, it secures direct power from a power outlet in the hospital room, and transmits and receives information regarding the storage status of cerebrospinal fluid 60 from the monitoring device 50 (for example, the first signal, the second signal, the height of the liquid level of the cerebrospinal fluid 60 accumulated inside the chamber 30, the amount of the cerebrospinal fluid 60 accumulated inside the chamber 30, etc.) via Bluetooth (registered trademark), converts it into Wi-Fi (registered trademark) communication, and transmits it to a remote terminal 65 or other relay points, and at the same time, it has a function of transmitting information regarding the location where the monitoring device 50 exists.

Explanation of Signs

[0071] 11: Drainage System 30: Chamber 32: Air Hole 33: Filter 35: Opening 35a: Tubular Portion 40: Introduction Path 41: Dripping Port 45: Drainage Catheter 50: Monitoring Device 51: Sensor Unit 51a: Light Emitting Element 51b: Light Receiving Element 511: Upper Light Emitting Element 512: Upper Light Receiving Element 513: Lower Light Emitting Element 514: Lower Light Receiving Element 52: Visible Portion 53: Control Unit 54: Memory Unit 55: Output Unit 60: Cerebrospinal Fluid 61: Liquid Level 62: Liquid Drop 65: Terminal 66: Monitor 70: Clamp 75: Long member 80: Drain bag 81: Scale 82: Air hole of drain bag 83: Filter of drain bag 84: Hole for handle 85: Recess of drain bag

Claims

1. A chamber capable of storing cerebrospinal fluid, A monitoring device having a sensor unit for detecting the height of the liquid level of the cerebrospinal fluid accumulated inside the chamber and being detachable from the chamber, And a control unit configured to issue a first signal when the liquid level reaches a first predetermined height or more. A drainage system having the above.

2. The drainage system according to claim 1, further comprising an introduction path disposed inside the chamber and having a dropping port for dropping cerebrospinal fluid.

3. The chamber has an air hole communicating the outside and the inside of the chamber above the dropping port, A filter is disposed in the air hole, The first predetermined height is below the filter and above the lower end of the chamber. The drainage system according to claim 2.

4. The first predetermined height is located above the dropping port. The drainage system according to claim 2.

5. The control unit is configured to issue a second signal when the liquid level becomes equal to or lower than a second predetermined height lower than the first predetermined height. The drainage system according to claim 1.

6. The drainage system according to claim 5, further comprising an introduction path disposed inside the chamber and having a dropping port for dropping cerebrospinal fluid. The second predetermined height is below the dropping port and above the lower end of the chamber. The drainage system according to claim 5.

7. The drainage system includes a graduated scale and has a long member extending in the vertical direction. The control unit is configured to determine a second height at which the sensor unit and the chamber are disposed based on a change amount of the height of the liquid surface when cerebrospinal fluid is dropped for a first predetermined time while the sensor unit and the chamber are located at a first height. The drainage system according to claim 1.

8. The monitoring device has an output unit, The output unit converts the first signal into at least one of visual information, auditory information, and vibration information and outputs the converted signal. The drainage system according to any one of claims 1 to 7.

9. The drainage system has an output unit disposed at a position away from the monitoring device and the chamber, The output unit is a terminal that converts the first signal into at least one of visual information, auditory information, and vibration information and outputs the converted signal. The drainage system according to any one of claims 1 to 7.

10. The terminal has a monitor, The monitor displays information related to the location where the monitoring device is present and / or information related to the patient for whom the monitoring device is used. The drainage system according to claim 9.

11. The information related to the location where the monitoring device is present is the position of the monitoring device shown on a map or the name of the location where the monitoring device is present. The drainage system according to claim 10.

Images