CN215841147U - Drainage control device - Google Patents

Drainage control device Download PDF

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Publication number
CN215841147U
CN215841147U CN202122354624.1U CN202122354624U CN215841147U CN 215841147 U CN215841147 U CN 215841147U CN 202122354624 U CN202122354624 U CN 202122354624U CN 215841147 U CN215841147 U CN 215841147U
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China
Prior art keywords
drainage
infrared
cerebrospinal fluid
control device
tube
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CN202122354624.1U
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Chinese (zh)
Inventor
齐猛
王宁
陈文劲
曲鑫
王娜
赵浩
田雅超
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Xuanwu Hospital
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Xuanwu Hospital
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Abstract

The utility model provides a drainage controlling means, it includes at least, the drainage tube, it is used for the drainage to the cerebrospinal fluid, the drainage bottle, it communicates to the one end of pipe and is used for holding to the cerebrospinal fluid, still including setting up the infra red ray sensor on the drainage tube, the infra red ray emission end that infra red ray sensor was seted up to the drainage bottle outside is in the hole of same axial position, be provided with the division board in the drainage bottle, wherein, under the buoyancy effect that accumulational cerebrospinal fluid produced gradually, the division board gets back to the mode of the distance of emission position and reduces the distance between its and the hole gradually after reaching its self production coaxial transmission according to the infrared ray that reduces by the infra red ray sensor transmission through the hole.

Description

Drainage control device
Technical Field
The utility model relates to the field of medical equipment, in particular to a drainage control device.
Background
CN210521448U discloses neurosurgery craniocerebral spine fluid drainage device relates to neurosurgery medical auxiliary assembly technical field, specifically is a neurosurgery craniocerebral spine fluid drainage device, including support panel, support panel's inside is seted up flutedly, one side of support panel is provided with bears panel angle modulation ware, one side fixedly connected with axis of rotation that bears panel angle modulation ware, the one end of axis of rotation extends to the inside of recess, bearing panel has been cup jointed to the surface of axis of rotation. This neurosurgery craniocerebral spine liquid drainage device through the setting of load-bearing panel, drainage tube, arc wall and spacing rope, can place medicine or medical appliances on the load-bearing panel, and the medical personnel of being convenient for are quick gets puts, and the drainage tube is placed in the inside of arc wall, and the skew can be prevented from taking place by spacing rope to lead to influencing the operation process, cause the unnecessary trouble for medical personnel, saved medical personnel's intensity of labour.
The prior art provides a craniocerebral spinal fluid drainage device, but the prior art does not consider the detection of cerebrospinal fluid flow or the prior art is comparatively complicated to cerebrospinal fluid flow detection device's structure, and detects narrower drainage tube, and the testing result receives the influence great, and the change condition of reaction cerebrospinal fluid liquid level that can not be simple uses complicacy and fault probability is big, and general usefulness is relatively poor.
Furthermore, on the one hand, due to the differences in understanding to the person skilled in the art; on the other hand, since the inventor has studied a lot of documents and patents when making the present invention, but the space is not limited to the details and contents listed in the above, however, the present invention is by no means free of the features of the prior art, but the present invention has been provided with all the features of the prior art, and the applicant reserves the right to increase the related prior art in the background.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a drainage control device which at least comprises a drainage tube, a drainage bottle and an infrared sensor, wherein the drainage tube is used for draining cerebrospinal fluid, the drainage bottle is communicated to one end of the drainage tube and is used for containing the cerebrospinal fluid, the infrared sensor is arranged on the drainage tube, a hole is formed in the drainage bottle, the infrared emitting end of the infrared sensor is positioned in the same axial position, and a partition plate is arranged in the drainage bottle.
Preferably, the infrared sensor comprises a timing chip, an infrared transmitting component and an infrared receiving component, and the timing chip is connected to the infrared transmitting component and the infrared receiving component in a communication coupling mode in a mode of recording transmitting and receiving time of the infrared transmitting component and the infrared receiving component.
Preferably, the normal direction of the functional surfaces of the infrared transmitting assembly and the infrared receiving assembly is the same as the axial direction of the drainage bottle, wherein the functional surfaces refer to the surfaces which generate or receive infrared rays by the infrared transmitting assembly and the infrared receiving assembly.
Preferably, the infrared sensor further comprises a computing chip communicatively coupled to the timing chip in a manner to compute the time interval based on the received emission and reception times and to compute the obtained drainage flow.
Preferably, the side of the separating plate facing the opening is dimensioned in such a way that it fits the inner cross-sectional shape of the drainage bottle.
Preferably, the partition board gradually ascends along the axial direction of the drainage bottle due to the buoyancy generated by the accumulation of the cerebrospinal fluid is parallel to the cerebrospinal fluid level at any time.
Preferably, an alarm component is further arranged and is in communication connection with the computing chip in a manner of receiving an alarm instruction sent by the computing chip when the drainage flow rate is judged to reach the preset condition.
Preferably, the partition plate is configured in a circular ring configuration with a central opening that matches the radial dimension of the drainage bottle in such a way that the partition plate can penetrate through cerebrospinal fluid flowing out of the drainage tube.
Preferably, the infrared sensor is connected to the drainage tube by a connection part, the connection part comprises a sleeve, and the sleeve is made to form an asymmetric pipeline structure with gradually reduced radial pipe diameter along a path which the sleeve passes through along the axial direction of the sleeve.
Preferably, the connecting part further comprises a connecting table, the length direction of the connecting table is configured to be along the radial direction of the drainage tube, and the infrared inductor is arranged on the connecting table.
The utility model has the advantages that:
adopt infrared detection, can react the rising condition of cerebrospinal fluid in the drainage bottle well under the condition of contactless cerebrospinal fluid itself to compare in the direct equipment that detects to the drainage tube, this device has avoided because the error that probably causes of the narrower drainage tube of detection pipe diameter, in addition with the check out test set setting convenient to use user dismantles and installs above the drainage tube, make one set of infrared check out test set can use in turn on the combination of leading to the river of group, promoted holistic general usefulness and circulation nature.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention using infrared detection;
FIG. 2 is a schematic structural diagram of a preferred embodiment of the present invention using ultrasonic testing;
FIG. 3 is a schematic circuit diagram of a preferred embodiment of the present invention using infrared detection;
in the figure: 100. a drainage part; 110. a drainage tube; 120. a drainage bottle; 121. a separator plate; 122. a hole; 200. a speed measuring section; 210. an ultrasonic speed measuring unit; 211. a first ultrasonic sensor; 212. a second ultrasonic sensor; 220. an on-off valve; 300. an infrared sensor; 310. an infrared emitting assembly; 320. an infrared receiving component; 400. a connecting portion; 410. a sleeve; 420. a connecting table; 500. a timing chip; 600. calculating a chip; 700. an alarm component.
Detailed Description
The following detailed description is made with reference to the accompanying drawings.
The utility model provides an external cerebrospinal fluid drainage speed measurement control device (shown in fig. 2), which at least comprises a drainage part 100 and a speed measurement part 200, wherein the drainage part 100 is used for leading out cerebrospinal fluid of a patient, the speed measurement part 200 is used for detecting the leading-out condition of the cerebrospinal fluid in the drainage part 100, and a plurality of detected parameters at least comprise a flow speed or a flow parameter described by the passing volume of cerebrospinal fluid in unit time, for example, the passing volume of cerebrospinal fluid in one hour is 10ml, and the flow speed or the flow in the period of time can be called as 10 ml/hour. In operation, the drainage portion 100 is configured to drive the cerebrospinal fluid into the drainage portion 100 by gravity, and a position near the cerebrospinal fluid inlet of the patient's head is referred to as an upstream end, and a position near the ground is referred to as a downstream end. The drainage part 100 includes at least one drainage bottle 120 and a drainage tube 110, the drainage bottle 120 near the downstream end and the drainage tube 110 near the upstream end communicate with each other, and preferably, the inner diameter of the duct of the drainage tube 110 is set to be smaller or much smaller than the inner diameter of the drainage bottle 120. The upstream end of the drainage bottle 120 is combined and connected with one end of the drainage tube 110 in contact with each other to establish a mutually axially parallel relationship, and the other end of the drainage tube 110 at the upstream end is connected to the cerebrospinal fluid position of the patient or is communicated with another channel in contact with the cerebrospinal fluid position of the patient, so that the cerebrospinal fluid can flow into the drainage bottle 120 through the drainage tube 110. The speed measuring part 200 at least includes an ultrasonic speed measuring unit 210 and a switching valve 220, and the ultrasonic speed measuring unit 210 is disposed on the drainage tube 110 to detect a flow rate of liquid in the drainage tube 110. Preferably, the lower end portion of the outer side of the ultrasonic speed measuring unit 210 is provided with an on-off valve 220 for turning off or on the fluid flowing device.
The ultrasonic velocity measuring unit 210 for measuring the flow of cerebrospinal fluid into the drainage bottle 120 through the catheter is configured to have a substantially cylindrical-like configuration for the purpose of being inclusively connected to the drainage tube 110, and the ultrasonic velocity measuring unit 210 may be configured to have a substantially funnel-like configuration, and the radial dimension thereof is gradually narrowed along the path from the upstream end to the downstream end in the axial direction thereof, and preferably, the opening size of the downstream end thereof is consistent with the inner diameter of the drainage tube 110, and the opening size of the upstream end thereof is slightly larger or larger than the tube diameter of the drainage tube 110, so that when the ultrasonic velocity measuring unit 210 is connected to the drainage tube 110, the nozzle at one end of the drainage tube 110 can be conveniently aligned with the opening at the end with the larger inner diameter thereof, and can penetrate through the opening at the other end which is gradually narrowed to the same inner diameter as the drainage tube 110, thereby achieving stable connection. The above-mentioned use case is described in the case that the drainage tube 110 can be detached from the drainage bottle 120, and in fact, the ultrasonic speed measuring unit 210 can be used in a reversible manner, and the function of confirming the reversible can be realized by a gyroscope or any component or electronic component capable of indicating the direction. Preferably, the ultrasonic tachometer unit 210 has an upper end large opening portion connected with a lower end narrow opening portion in an integrated configuration, and exhibits an axially coincident characteristic in its configuration. The section of the drainage tube 110 surrounded by the ultrasonic speed measuring unit 210 constitutes a detection tube section, which is an imaginary tube section defined, and the detection tube section and the drainage tube 110 can be formed integrally in practice.
The detection tube segment, to which the ultrasonic speed measuring unit 210 for detecting the liquid flow condition in an ultrasonic detection manner is connected, is configured to have a substantially tubular structure with an encircling closed edge in cross section along an extending path from an upstream end to a downstream end in a manner of guiding the cerebrospinal fluid to the drainage bottle 120, wherein the upstream end refers to an opening position where the cerebrospinal fluid flows into the flow-rate side tube from the surgical incision of the patient or any other anterior component, and the downstream end refers to an opening position where the cerebrospinal fluid flows out of the drainage tube 110 from the axial direction of the detection tube segment. The drainage tube 110 may be a hollow cylindrical structure body which may be constructed as a metal tube or a non-metal tube, and preferably, it may be selected as a medical plastic tube according to a material of the drainage tube 110 commonly used in medicine. The drainage tube 110 may be a thin-walled tube, and the thickness of the tube wall thereof may be set to 0.5-1.5 mm. Because the drainage tube 110 is a thin-wall tube, the influence of the thickness of the tube wall on the flow velocity is negligible, meanwhile, the length of the detection tube section can be set to be a short distance, the influence of the flow resistance is also negligible, and in an ideal state, the flow velocity of the liquid in the detection tube section can be basically considered to represent the overall flow velocity of the drainage tube 110. A first ultrasonic sensor 211 is provided near the upstream end of the pipe segment, and correspondingly, a second ultrasonic sensor 212 is provided near the downstream end thereof, and the ultrasonic wave projection or recovery directions of both ultrasonic sensors are set in the radial direction of the pipe. The present embodiment employs a propagation velocity method of the flow velocity of the ultrasonic vehicle, that is, the time and the time difference between two ultrasonic waves reaching the first ultrasonic sensor 211 and the second ultrasonic sensor 212 are detected to calculate the flow velocity of the liquid in the pipe. The flow rate data monitored by the ultrasonic speed measurement unit 210 is communicated with the intelligent mobile device through a wireless communication module (not shown), and the monitored data is displayed, processed and remotely transmitted. An alternative ultrasonic sensor signal is TDS-100H.
The outer lower end of the ultrasonic speed measuring unit 2102 of the cylinder-like structure body is provided with a manually-operated long-strip T-shaped switch valve 220 which can automatically rotate and can be used for switching on and off the drainage device when the drainage tube 110 drains the cerebrospinal fluid too fast in the process of measuring the speed of the cerebrospinal fluid in an emergency. After the flow rate data of the cerebrospinal fluid is obtained, the medical staff can know whether the flow rate of the cerebrospinal fluid has over drainage or not by self judgment or after receiving an alarm prompt, for example, if the flow rate exceeds 10-20 ml/h as a detection result, the valve can be closed in time to play a role in protecting a patient and avoid serious medical accidents.
The above-mentioned scheme of ultrasonic detection can directly reflect the flow velocity of the liquid in the drainage tube 110 to a certain extent, but cannot be well adapted to the condition that the tube diameter of the drainage tube 110 itself is thin. Therefore, preferably, an embodiment is also provided, which mainly adopts an infrared detection scheme to realize the flow detection of the cerebrospinal fluid, and the detection scheme adopts an indirect detection mode to detect the flow rate condition of the drainage.
As shown in fig. 1 and 3, the present embodiment further includes a spacer 121, a hole 122, an infrared sensor 300, an infrared emitting element 310, and an infrared receiving element 320.
Preferably, be provided with infrared inductor 300 on drainage tube 110 for the drainage, set up infrared inductor 300 on drainage tube 110 rather than setting up and mainly considering that make things convenient for medical personnel to take off infrared inductor 300 in drainage bottle 120 to use to other drainage tube 110 and the combination of drainage bottle 120 that have the structure similar with this embodiment, through this kind of design, make one set of infrared inductor 300 can utilize to a plurality of drainage external members, promoted circulation nature and suitability. In addition, the electronic equipment can be more conveniently replaced and maintained.
An infrared ray emitting unit 310 and an infrared ray receiving unit 320 are provided on the infrared ray sensor 300 for measuring the inflow of cerebrospinal fluid into the drainage bottle 120 through the drainage tube 110, protruding from the cross-sectional surface of the lower end of the infrared ray sensor 300, and the emitting and receiving units may be integrally formed with the infrared ray sensor 300. The drainage tube 110 is provided with a drainage bottle 120 having a cerebrospinal fluid collecting function at a downstream end thereof with an infrared sensor 300. The functional surfaces of the transmitting and receiving assemblies are both oriented in the direction of the drainage bottle 120, and the normal directions of the functional surfaces are both parallel to the axial direction of the drainage bottle 120, wherein the functional surfaces refer to the surfaces where the infrared transmitting and receiving assemblies generate or receive infrared light, such as the surfaces where the infrared lamp head is located.
In order to enable the functional surface of the infrared sensor 300 to face the drainage bottle 120, a connection part 400 is provided, the connection part 400 is connected to the drainage tube 110, and the other end is connected to the infrared sensor 300, which includes at least a sleeve 410 and a connection stage 420. The sleeve 410 is constructed in an asymmetric pipe structure with gradually decreasing radial pipe diameter along the path it takes in the axial direction, and thus forms two ports, i.e., an opening with the largest radial dimension at one end and an opening with the smallest radial dimension at one end, which can be referred to as a first opening and a second opening, respectively, the second opening with the smallest radial dimension being arranged in a manner to match the pipe diameter of the draft tube 110. Cannula 410 is generally configured to approximate a funnel configuration, such that, in use, a medical practitioner can couple cannula 410 to drain 110 by threading catheter 110 into a first opening of cannula 410 and out through a second opening, the coupling of drain 110 to cannula 410 being supported by friction therebetween. The connecting platform 420 is configured at least along the radial direction of the drainage tube 110 in the length direction, and the connecting platform 420 may be configured as a bar-shaped or block-shaped structure, one end of which is connected to the casing 410 and the other end of which extends to a suspended state along the axial direction of the drainage tube 110 away from the axial direction of the drainage tube 110. The infrared sensor 300 is disposed on the connection stage 420.
The outer side of the drainage bottle 120 is provided with a tiny hole 122 through which only infrared detection light can pass, and the hole 122 and the tiny infrared detection light emitting and receiving device are in the same straight line, so that infrared detection light emitted by the infrared emission component 310 can smoothly pass through the hole 122 on the outer side of the drainage bottle 120 to reach the interior of the bottle, or infrared rays reflected by the interior of the bottle can return to the infrared receiving component 320 through the hole 122. The bottom in the drainage bottle 120 is provided with a separation plate 121 capable of floating on the surface of cerebrospinal fluid, and the separation plate is made of a non-light-transmitting light material with infrared reflection property and smooth surface, so that the friction force between the separation plate 121 and the inner surface of the drainage bottle 120 is ignored. Preferably, the partition board 121 is configured to cover the projected area of the hole 122 along the axial direction of the drainage bottle 120 at least all the time when the partition board is pushed by the buoyancy of the accumulated cerebrospinal fluid to move, and may be in a block-shaped, sheet-shaped or film-shaped structure. Preferably, the separator 121 may be configured in a circular or annular configuration to match the radial shape and size of the drainage bottle 120, such that the separator 121 may cover at least a majority of the cross-sectional area of the drainage bottle 120. The partition plate 121 is preferably provided with a passage through which cerebrospinal fluid can pass, and thus the partition plate 121 may be preferably configured as a circular ring structure with a hollow center. When cerebrospinal fluid flows into the drainage bottle 120 through the drainage tube, the partition board 121 floats upwards under the action of liquid buoyancy, the infrared detection light is emitted by the infrared emission component 310 of the infrared sensor 300, passes through the hole 122 on the outer side of the drainage bottle 120 and reaches the partition board 121 in the bottle, and is reflected by the partition board 121 to reach the infrared receiving device through the original path, so that the ascending distance of the partition board can be calculated. When the disposable drainage bottle is used for the first time, the initial position of the infrared sensor 300 needs to be initialized, before the drainage bottle 120 conducts drainage work, the time from infrared ray emission to infrared ray reception for the first detection is used as a basic value, the distance between the infrared sensor 300 and the partition board 121 is the farthest, and the distance is correspondingly reduced along with the rising of the liquid level of cerebrospinal fluid.
Preferably, as a preferred mode of the present invention, the infrared sensor 300 is connected with a timing chip 500 and a calculating chip 600, the infrared emitting component 310 and the infrared receiving component 320 are electrically connected to the timing chip 500, and the timing chip 500 records the emitting time and the receiving time of the infrared. Similarly, the transmitting and receiving data marked by the time stamp on the timing chip 500 is sent to the calculating chip 600 through communication connection, the calculating chip 600 calculates the time difference between the transmitting and receiving data, and the distance between the infrared sensor 300 and the isolation plate 121 is calculated by using the preset infrared light speed as a known parameter in a matching speed distance formula. By setting the infrared sensor 300 to repeatedly transmit and receive infrared rays at a preset time interval, a plurality of groups of transmitting and receiving data with time change can be obtained, a plurality of groups of distance data related to time can be obtained after processing, the change of the distance data can be analyzed to represent the position change of the separation plate 121 in the drainage bottle 120, namely the cerebrospinal fluid liquid level, the change volume can be calculated by matching the known bottom surface area size of the drainage bottle 120, and the change volume is required cerebrospinal fluid flow, namely drainage flow.
The infrared detection light emitting and receiving device is communicatively coupled to record the emission and reception time interval and/or emission frequency of the infrared detection light emitting and receiving device. The computing chip 600 is communicatively coupled to the timing chip 500 in a manner to receive the transmit-receive time interval and/or the transmit frequency. The timing chip 500 is used for accumulating the sensing time of the infrared sensor 300, and the calculating chip 600 is used for calculating the drainage flow according to the sensing time and the rising distance of the isolation layer.
Preferably, an alarm module 700 is further provided, the alarm module 700 is communicatively connected to the computing chip 600, and sends an alarm command to the alarm module 700 when the drainage flow processed by the computing chip 600 meets a preset condition, the alarm module 700 may be configured as one or more of a buzzer, a flashing light, and a vibrator, and another optional function is to transmit an alarm signal to a mobile device or a fixed device near the medical staff.
The electronic component part of the present invention is realized by a person skilled in the art by way of examples of the device signals used, it being noted that these examples do not constitute a limitation to all possible embodiments of the present invention. The calculation chip 600 adopts an STM series MCU chip, the timing chip 500 can adopt a crystal oscillator timing unit, the infrared inductor 300 can adopt a 2U8502-acg210408 infrared detection component, and the alarm component 700 can adopt a JBE9650 pin type buzzer or an LTE-5061 alarm lamp and other modes.
It should be noted that the above-mentioned embodiments are exemplary, and that those skilled in the art, having benefit of the present disclosure, may devise various arrangements that are within the scope of the present disclosure and that fall within the scope of the utility model. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the utility model is defined by the claims and their equivalents.

Claims (10)

1. A drainage control device at least comprises a drainage control device,
a drainage tube (110) for draining cerebrospinal fluid,
a drainage bottle (120) communicated to one end of the drainage tube and used for containing the cerebrospinal fluid,
it is characterized in that the preparation method is characterized in that,
the drainage tube is characterized by further comprising an infrared sensor (300) arranged on the drainage tube (110), a hole (122) is formed in the outer side of the drainage bottle (120) and located at the same axial position as an infrared emission end of the infrared sensor (300), a separation plate (121) is arranged in the drainage bottle (120), wherein under the action of buoyancy generated by gradually accumulated cerebrospinal fluid, the separation plate (121) gradually reduces the distance between the infrared sensor and the hole (122) in a mode of reducing the distance from infrared rays emitted by the infrared sensor (300) to the emission position after reaching the emission position through the hole (122) and coaxial emission is generated.
2. The control device according to claim 1, wherein the infrared sensor (300) comprises a timing chip (500) and an infrared transmitting component (310) and an infrared receiving component (320), and the timing chip (500) is communicatively coupled to the infrared transmitting component (310) and the infrared receiving component (320) in a manner of recording the transmitting and receiving times of the infrared transmitting component (310) and the infrared receiving component (320).
3. The control device according to claim 2, wherein the functional surfaces of the infrared ray emitting assembly (310) and the infrared ray receiving assembly (320) are both oriented axially in the same direction as the flow-guide bottle (120), wherein the functional surfaces refer to the surfaces of the infrared ray emitting assembly (310) and the infrared ray receiving assembly (320) that generate or receive infrared rays.
4. The control device according to claim 3, wherein the infrared sensor (300) further comprises a computing chip (600), the computing chip (600) being communicatively coupled to the timing chip (500) in a manner to compute the time interval and compute the drain flow based on the received transmission and reception times.
5. The control device according to claim 4, characterized in that the side of the isolation plate (121) facing the hole (122) is sized to fit the cross-sectional shape of the interior of the drainage bottle (120).
6. The control device according to claim 5, characterized in that the partition plate (121) which is gradually raised along the axial direction of the drainage bottle (120) by the buoyancy generated by the accumulation of cerebrospinal fluid is constantly parallel to the cerebrospinal fluid level.
7. The control device according to claim 6, characterized in that an alarm component (700) is further provided, the alarm component (700) being communicatively connected to the computing chip (600) in a manner of receiving an alarm instruction sent by the computing chip (600) upon determining that the drainage flow rate meets a preset condition.
8. The control device according to claim 7, characterized in that the separating plate (121) is configured in a circular ring configuration with a central opening adapted to the radial dimension of the drainage bottle (120) in such a way that cerebrospinal fluid flowing out of the drainage tube (110) can pass through.
9. Control device according to claim 8, characterized in that the infrared sensor (300) is connected to the draft tube (110) by a connection (400), the connection (400) comprising a sleeve (410), the sleeve (410) being shaped along its path in axial direction to constitute an asymmetric duct structure with a gradually decreasing radial pipe diameter.
10. The control device according to claim 9, wherein the connection part (400) further comprises a connection stage (420), the connection stage (420) is lengthwise configured to be along a radial direction of the draft tube (110), and the infrared sensor (300) is disposed on the connection stage (420).
CN202122354624.1U 2021-09-27 2021-09-27 Drainage control device Active CN215841147U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122354624.1U CN215841147U (en) 2021-09-27 2021-09-27 Drainage control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122354624.1U CN215841147U (en) 2021-09-27 2021-09-27 Drainage control device

Publications (1)

Publication Number Publication Date
CN215841147U true CN215841147U (en) 2022-02-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122354624.1U Active CN215841147U (en) 2021-09-27 2021-09-27 Drainage control device

Country Status (1)

Country Link
CN (1) CN215841147U (en)

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