CN110420366B - Device for monitoring flow velocity of infusion device - Google Patents
Device for monitoring flow velocity of infusion device Download PDFInfo
- Publication number
- CN110420366B CN110420366B CN201910832367.2A CN201910832367A CN110420366B CN 110420366 B CN110420366 B CN 110420366B CN 201910832367 A CN201910832367 A CN 201910832367A CN 110420366 B CN110420366 B CN 110420366B
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- dropper
- shell
- inclination
- assembly
- rotating shaft
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- 238000001802 infusion Methods 0.000 title claims abstract description 57
- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 31
- 238000012545 processing Methods 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 description 7
- 239000003814 drug Substances 0.000 description 4
- 229940079593 drug Drugs 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010011409 Cross infection Diseases 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- 206010033557 Palpitations Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000857 drug effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16886—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body for measuring fluid flow rate, i.e. flowmeters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16886—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body for measuring fluid flow rate, i.e. flowmeters
- A61M5/1689—Drip counters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/58—Means for facilitating use, e.g. by people with impaired vision
- A61M2205/583—Means for facilitating use, e.g. by people with impaired vision by visual feedback
Landscapes
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to the technical field of flow rate measurement, in particular to a device for monitoring the flow rate of an infusion device. A device for monitoring the flow rate of an infusion set, characterized by: the device comprises a shell, a clamping assembly arranged on the shell, an inclination detection assembly for detecting the inclination state of the dropper relative to the ground plane, a driving adjustment assembly connected between the shell and the clamping assembly, and a flow speed observation device arranged on the shell and used for observing the dropping speed of the dropper, wherein a signal input end of the driving adjustment assembly is connected with a signal output end of the inclination detection assembly and used for receiving and driving the clamping assembly to rotate according to the detection result of the inclination detection assembly so as to adjust the inclination state of the dropper. According to the invention, through the cooperation of the clamping assembly, the inclination detection assembly and the driving adjustment assembly, the infusion dropper always keeps a state of facing the ground vertically, and a user can observe the infusion speed through the flow speed observation device under an unconventional condition, so that the infusion progress is accurately known, and the treatment effect is ensured.
Description
Technical Field
The invention relates to the technical field of flow rate measurement, in particular to a device for monitoring the flow rate of an infusion device.
Background
In clinic, the infusion is mostly carried out by gravity infusion, the infusion bottle is placed at a position higher than the body, and the liquid is infused into the blood of a patient through the gravity action of the liquid and the pressure difference of the infusion port. However, under the inconvenient conditions of the traditional gravity transfusion such as post-disaster emergency medical treatment, field battlefield medical treatment and the like, the transfusion belt and the transfusion dropper can shake greatly due to rapid movement or bumping on the ground, the transfusion flow rate cannot be determined, and the situation that blood flows into the transfusion belt or air bubbles flow into a human body is extremely easy to occur.
Therefore, some non-gravity infusion devices begin to appear on the market, and the main structures of the non-gravity infusion devices are a shell, an infusion bag placed in the shell and an extrusion device for extruding the infusion bag. The non-gravity infusion device does not need to use the pressure difference of the height for infusion, greatly facilitates the movement and treatment of injured people, but the flow rate detection of the infusion device is still a difficult problem.
If the flow rate of infusion cannot be observed in real time, the injured person cannot know the progress of infusion, the exertion of the drug effect is influenced too slowly, palpitation of the injured person is easily caused too fast, and the treatment of the injured person is influenced. However, the conventional flow rate measuring method includes an invasive speed sensor, a hall element speed measurement, etc., where the invasive speed sensor is used in the medical field and is very easy to cause drug pollution or cross infection, and the slow flow rate of the infusion dropper can cause a great error by using the hall element measurement, so the conventional flow rate measuring method is not suitable for measuring the flow rate of the infusion device under the unconventional condition, and cannot solve the problem.
Disclosure of Invention
The invention aims to overcome the defects, and provides a device for monitoring the flow rate of an infusion device, which ensures that an infusion dropper always keeps a state of facing the ground vertically through the cooperation of a clamping component, an inclination detection component and a driving adjustment component, so that a user can observe the dropping speed of infusion through a flow rate observation device under an unconventional condition, the infusion progress is accurately known, and the treatment effect is ensured.
The invention is realized by the following technical scheme:
A device for monitoring the flow rate of an infusion set, characterized by: the infusion drip tube comprises a shell, a clamping assembly, an inclination detection assembly and a driving adjustment assembly, wherein the clamping assembly is arranged on the shell and used for clamping an infusion drip tube, the inclination detection assembly is used for detecting the inclination state of the drip tube relative to a ground plane, the driving adjustment assembly is connected between the shell and the clamping assembly and used for adjusting the inclination state of the drip tube, the flow rate observation device is arranged on the shell and used for observing the drip speed of the drip tube, and the signal input end of the driving adjustment assembly is connected with the signal output end of the inclination detection assembly and used for receiving and driving the clamping assembly to rotate according to the detection result of the inclination detection assembly so as to adjust the inclination state of the drip tube.
The application mode is as follows:
The infusion dropper is placed in the shell and is arranged on the clamping assembly, once the position of the infusion device changes, the infusion dropper is sensed by the inclination detection assembly, then the inclination information is transmitted to the driving adjustment assembly by the inclination detection assembly, the driving adjustment assembly drives the clamping assembly and the dropper to rotate, the dropper always keeps vertical direction to the horizontal ground, and injured personnel can observe the dropping speed of the infusion dropper through the flow speed observation device arranged on the shell.
For better implementation of the present embodiment, the following optimization scheme is also provided:
further, to optimize the housing: the shell is a box body with a cavity inside, and the driving adjusting component and the clamping component are both arranged in the inner cavity of the shell.
Further, to optimize the drive adjustment assembly and clamping assembly: the driving adjustment assembly comprises a base fixedly connected to the inside of the shell, a first rotating shaft horizontally arranged above the base and rotationally connected with the base, a first motor fixedly installed on the base and in driving connection with one end of the first rotating shaft and used for driving the first rotating shaft to rotate, a supporting rod fixedly connected to the other end of the first rotating shaft and perpendicular to the first rotating shaft, a second rotating shaft rotationally connected to the other end of the supporting rod and perpendicular to the first rotating shaft and the supporting rod, and a second motor fixedly installed on the supporting rod and in driving connection with one end of the second rotating shaft and used for driving the second rotating shaft to rotate; the clamping component is fixedly connected to the other end of the second rotating shaft and is clamped on the periphery of the wall of the dropper tube.
Further, to optimize the tilt detection assembly: the inclination detection assembly comprises an inclination sensor fixedly connected to the base and used for detecting the inclination state of the base relative to the ground plane, and a controller connected with the inclination sensor; the controller is electrically connected with the first motor and the second motor respectively and is used for controlling the first motor and the second motor to drive the rotating shafts to rotate according to the information transmitted by the inclination sensor so as to adjust the inclination posture of the dropper, so that the dropper always keeps vertical orientation to the horizontal ground.
Further, for convenience in observing the dropper flow rate: the flow velocity observation device comprises an observation window which is arranged on the end face of the shell and is positioned beside the dropper clamping part, and the observation window is formed by a window surface made of transparent materials.
Further, to optimize the flow rate observation device: the flow speed observation device comprises an infrared sensor, a processor and a display screen, wherein the infrared sensor is arranged on the clamping assembly and used for sensing the dropping speed of the dropper clamped by the clamping assembly, the processor is electrically connected with the infrared sensor and used for processing dropping speed information of the dropper, and the display screen is arranged on the outer surface of the shell and is electrically connected with the processor and used for displaying the dropping speed value.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the device for monitoring the flow rate of the infusion device, the infusion dropper always keeps a state of facing the ground vertically through the cooperation of the clamping assembly, the inclination detection assembly and the driving adjustment assembly, so that a user can observe the infusion speed through the flow rate observation device under an unconventional condition, the infusion progress is accurately known, and the treatment effect is ensured;
2. According to the device for monitoring the flow rate of the infusion device, the change information is transmitted to the controller when the inclination sensor senses the change of the posture of the infusion device, the controller controls the first motor and the second motor to start, and the motor drives the rotating shaft to rotate so as to adjust the posture of the infusion dropper, so that the output end of the infusion dropper is always vertically oriented to the ground, and the accurate observation of the dropping speed of the dropper is facilitated;
3. According to the device for monitoring the flow rate of the infusion device, through the matching and adjustment of the clamping assembly, the inclination detection assembly and the driving adjustment assembly, medicines are enabled to drop downwards vertically at the infrared sensor arranged on the end face of the clamping assembly, the infrared sensor can acquire accurate dropping speed information and transmit the accurate dropping speed information to the processor, and finally the dropping speed information is displayed on the display screen, so that the accuracy of dropping speed is guaranteed, and the user can observe the medicine conveniently.
Drawings
The invention is further described below with reference to the accompanying drawings in conjunction with examples:
FIG. 1 is a schematic view of the overall structure of a device for monitoring the flow rate of an infusion device according to the present invention;
FIG. 2 is a schematic diagram of a three-dimensional mating structure of a clamping assembly, a tilt sensing assembly and a driving adjustment assembly according to the present invention;
FIG. 3 is a schematic view showing the working states of the clamping assembly, the inclination detecting assembly, the driving adjusting assembly and the dropper in the invention;
description of the reference numerals: 1-casing, 2-clamping component, 3-tilt detection component, 31-tilt sensor, 32-controller, 4-drive adjustment component, 41-base, 42-first rotation axis, 43-first motor, 44-bracing piece, 45-second rotation axis, 46-second motor, 5-velocity of flow viewing device, 51-viewing window, 52-infrared sensor, 53-display screen, 6-burette.
Detailed Description
The present invention is described in detail below with reference to the attached drawings and specific examples of the specification:
As shown in fig. 1-3, a device for monitoring the flow rate of an infusion set, comprising: the device comprises a shell 1, a clamping component 2, an inclination detection component 3, a driving adjustment component 4 and a flow speed observation device 5, wherein the clamping component 2 is arranged on the shell 1 and used for clamping an infusion dropper 6, the inclination detection component 3 is used for detecting the inclination state of the dropper 6 relative to a ground plane, the driving adjustment component 4 is connected between the shell 1 and the clamping component 2 and used for adjusting the inclination state of the dropper 6, the flow speed observation device 5 is arranged on the shell 1 and used for observing the dropping speed of the dropper 6, and the signal input end of the driving adjustment component 4 is connected with the signal output end of the inclination detection component 3 and used for receiving and driving the clamping component 2 to rotate according to the detection result of the inclination detection component 3 so as to adjust the inclination state of the dropper 6, so that the dropper 6 always keeps vertical orientation to the horizontal ground.
The invention is preferably used in a non-gravity infusion device, the shell 1 can be a box body for placing an infusion bag, and can also be used only as a shell for placing all components.
The shell 1 is a box body with a cavity inside, and the driving adjusting component 4 and the clamping component 2 are both arranged in the inner cavity of the shell 1.
The driving adjustment assembly 4 comprises a base 41 fixedly connected to the inside of the shell 1, a first rotating shaft 42 horizontally arranged above the base 41 and rotationally connected with the base 41, a first motor 43 fixedly installed on the base 41 and in driving connection with one end of the first rotating shaft 42 and used for driving the first rotating shaft 42 to rotate, a supporting rod 44 fixedly connected to the other end of the first rotating shaft 42 and perpendicular to the first rotating shaft 42, a second rotating shaft 45 rotationally connected to the other end of the supporting rod 44 and perpendicular to the first rotating shaft 42 and the supporting rod 44, and a second motor 46 fixedly installed on the supporting rod 44 and in driving connection with one end of the second rotating shaft 45 and used for driving the second rotating shaft 45 to rotate; the clamping component 2 is fixedly connected to the other end of the second rotating shaft 45, and the clamping component 2 is clamped on the periphery of the pipe wall of the dropper 6.
The inclination detection assembly 3 comprises an inclination sensor 31 fixedly connected to the base 41 and used for detecting the inclination state of the base 41 relative to the ground plane, and a controller 32 connected with the inclination sensor 31;
The controller 32 is electrically connected to the first motor 43 and the second motor 46, respectively, and is configured to control the first motor 43 and the second motor 46 to drive each rotation shaft to rotate according to the information transmitted by the inclination sensor 31, so as to adjust the inclination posture of the dropper 6, so that the dropper 6 always keeps a vertical orientation to the horizontal ground.
The inclination sensor 31 transmits change information to the controller 32 after sensing the change of the posture of the base 41 in the infusion device, the controller 32 controls the first motor 43 and the second motor 46 to start, and the first motor 43 and the second motor 46 respectively drive the first rotating shaft 42 and the second rotating shaft 45 to rotate according to the instruction of the controller 32, so that the posture of the infusion dropper is adjusted, and the infusion dropper always keeps vertical to the ground.
The flow velocity observation device 5 comprises an observation window 51 which is arranged on the end face of the shell 1 and is positioned beside the clamping part of the dropper 6, and the observation window 51 is formed by a window surface made of transparent materials.
The flow speed observation device 5 comprises an infrared sensor 52 arranged on the clamping component 2 and used for sensing the dropping speed of the dropper 6 clamped by the clamping component 2, a processor electrically connected with the infrared sensor 52 and used for processing the dropping speed information of the dropper 6, and a display screen 53 arranged on the outer surface of the shell 1 and electrically connected with the processor and used for displaying the dropping speed value.
Through the adjustment of the clamping component 2, the inclination detection component 3 and the driving adjustment component 4, the medicines vertically drop downwards at the infrared sensor 52 arranged on the end face of the clamping component 2, the infrared sensor 52 can acquire accurate dropping speed information and transmit the accurate dropping speed information to the processor, and finally the dropping speed information is displayed on the display screen 53.
The foregoing detailed description will be given for the purpose of illustration only, and the invention is not limited to the above-described embodiments, but is to be construed as merely illustrative of the principles of the invention, as long as they are within the scope of the invention.
Claims (4)
1. A device for monitoring the flow rate of an infusion set, characterized by: the infusion device comprises a shell (1), a clamping assembly (2) arranged on the shell (1) and used for clamping an infusion dropper (6), an inclination detection assembly (3) used for detecting the inclination state of the dropper (6) relative to a ground plane, a driving adjustment assembly (4) connected between the shell (1) and the clamping assembly (2) and used for adjusting the inclination state of the dropper (6), and a flow speed observation device (5) arranged on the shell (1) and used for observing the dropping speed of the dropper (6), wherein the signal input end of the driving adjustment assembly (4) is connected with the signal output end of the inclination detection assembly (3) and used for receiving and driving the clamping assembly (2) to rotate according to the detection result of the inclination detection assembly (3) so as to adjust the inclination state of the dropper (6);
the driving adjustment assembly (4) comprises a base (41) fixedly connected to the inside of the shell (1), a first rotating shaft (42) horizontally arranged above the base (41) and rotationally connected with the base (41), a first motor (43) fixedly installed on the base (41) and in driving connection with one end of the first rotating shaft (42) and used for driving the first rotating shaft (42) to rotate, a supporting rod (44) fixedly connected with the other end of the first rotating shaft (42) and perpendicular to the first rotating shaft (42), a second rotating shaft (45) rotationally connected with the other end of the supporting rod (44) and perpendicular to the first rotating shaft (42) and the supporting rod (44), and a second motor (46) fixedly installed on the supporting rod (44) and in driving connection with one end of the second rotating shaft (45) and used for driving the second rotating shaft (45) to rotate; the clamping component (2) is fixedly connected to the other end of the second rotating shaft (45), and the clamping component (2) is clamped on the periphery of the pipe wall of the dropper (6);
The inclination detection assembly (3) comprises an inclination sensor (31) fixedly connected to the base (41) and used for detecting the inclination state of the base (41) relative to the ground plane, and a controller (32) connected with the inclination sensor (31);
The controller (32) is respectively and electrically connected with the first motor (43) and the second motor (46) and is used for controlling the first motor (43) and the second motor (46) to drive each rotating shaft to rotate according to the information transmitted by the inclination sensor (31) so as to adjust the inclination posture of the dropper (6), so that the dropper (6) always keeps vertical orientation to the horizontal ground.
2. A device for monitoring the flow rate of an infusion set according to claim 1, wherein: the shell (1) is a box body with a cavity inside, and the driving adjusting component (4) and the clamping component (2) are both arranged in the inner cavity of the shell (1).
3. A device for monitoring the flow rate of an infusion set according to any one of claims 1-2, wherein: the flow velocity observation device (5) comprises an observation window (51) which is arranged on the end face of the shell (1) and is positioned beside the clamping part of the dropper (6), and the observation window (51) is formed by a window surface made of transparent materials.
4. A device for monitoring the flow rate of an infusion set according to any one of claims 1-2, wherein: the flow speed observation device (5) comprises an infrared sensor (52) arranged on the clamping component (2) and used for sensing the dropping speed of the dropper (6) clamped by the clamping component (2), a processor electrically connected with the infrared sensor (52) and used for processing the dropping speed information of the dropper (6), and a display screen (53) arranged on the outer surface of the shell (1) and electrically connected with the processor and used for displaying the dropping speed value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910832367.2A CN110420366B (en) | 2019-09-04 | 2019-09-04 | Device for monitoring flow velocity of infusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910832367.2A CN110420366B (en) | 2019-09-04 | 2019-09-04 | Device for monitoring flow velocity of infusion device |
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| Publication Number | Publication Date |
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| CN110420366A CN110420366A (en) | 2019-11-08 |
| CN110420366B true CN110420366B (en) | 2024-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910832367.2A Active CN110420366B (en) | 2019-09-04 | 2019-09-04 | Device for monitoring flow velocity of infusion device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201073475Y (en) * | 2007-09-22 | 2008-06-18 | 季兵 | Intravenous transfusion monitoring apparatus |
| CN104189970A (en) * | 2014-09-11 | 2014-12-10 | 南通市第一人民医院 | Constant infusion device in transferring |
| CN206795831U (en) * | 2017-04-21 | 2017-12-26 | 成都福莫斯佰龙智能科技有限公司 | Material clamp on a kind of novel robot |
| CN210933152U (en) * | 2019-09-04 | 2020-07-07 | 福建骏格科技有限公司 | Device for monitoring flow velocity of infusion device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ZA200004569B (en) * | 2000-05-25 | 2001-03-01 | Makkink A E | Infusion of liquids into the human or animal body. |
| JP2012161479A (en) * | 2011-02-07 | 2012-08-30 | Icomes Labo:Kk | Infusion volume regulator |
| CN202724353U (en) * | 2012-08-25 | 2013-02-13 | 上海宝舜医疗器械有限公司 | Liquid dropping mechanism of residual-free drip chamber of infusion apparatus |
| US10413662B2 (en) * | 2015-05-14 | 2019-09-17 | Carefusion 303, Inc. | Priming apparatus and method |
| KR101727229B1 (en) * | 2016-01-28 | 2017-04-20 | 주식회사 메디유케어 | Measuring apparatus for the flow rate of ringer solution |
| CN208693928U (en) * | 2018-02-22 | 2019-04-05 | 范尚书 | Alarm for infusion |
| CN108671325A (en) * | 2018-05-31 | 2018-10-19 | 海宁卫生学校 | A kind of transfusion automatic monitoring adjusting apparatus |
| CN109464179B (en) * | 2019-01-11 | 2024-02-13 | 福建骏格科技有限公司 | Bone marrow puncture transfusion device |
| CN109567732B (en) * | 2019-02-01 | 2024-07-02 | 福建骏格科技有限公司 | Multi-angle imaging system of pleuroperitoneal cavity |
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2019
- 2019-09-04 CN CN201910832367.2A patent/CN110420366B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201073475Y (en) * | 2007-09-22 | 2008-06-18 | 季兵 | Intravenous transfusion monitoring apparatus |
| CN104189970A (en) * | 2014-09-11 | 2014-12-10 | 南通市第一人民医院 | Constant infusion device in transferring |
| CN206795831U (en) * | 2017-04-21 | 2017-12-26 | 成都福莫斯佰龙智能科技有限公司 | Material clamp on a kind of novel robot |
| CN210933152U (en) * | 2019-09-04 | 2020-07-07 | 福建骏格科技有限公司 | Device for monitoring flow velocity of infusion device |
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| CN110420366A (en) | 2019-11-08 |
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