WO2022105036A1 - 一种管路压力监测装置 - Google Patents

一种管路压力监测装置 Download PDF

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Publication number
WO2022105036A1
WO2022105036A1 PCT/CN2020/141900 CN2020141900W WO2022105036A1 WO 2022105036 A1 WO2022105036 A1 WO 2022105036A1 CN 2020141900 W CN2020141900 W CN 2020141900W WO 2022105036 A1 WO2022105036 A1 WO 2022105036A1
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Prior art keywords
sliding sleeve
circuit board
vent
vent nozzle
housing
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PCT/CN2020/141900
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English (en)
French (fr)
Inventor
董亚东
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赛若麦得（上海）生物技术有限公司
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Application filed by 赛若麦得（上海）生物技术有限公司 filed Critical 赛若麦得（上海）生物技术有限公司
Priority to US18/037,485 priority Critical patent/US20240011860A1/en
Priority to EP20962327.1A priority patent/EP4242617A4/en
Publication of WO2022105036A1 publication Critical patent/WO2022105036A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0007—Fluidic connecting means
    • G01L19/003—Fluidic connecting means using a detachable interface or adapter between the process medium and the pressure gauge
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0007—Fluidic connecting means
    • G01L19/0038—Fluidic connecting means being part of the housing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
    • 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
    • A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
    • A61M5/16854—Monitoring, detecting, signalling or eliminating infusion flow anomalies by monitoring line pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/14—Housings
    • G01L19/142—Multiple part housings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/14—Housings
    • G01L19/142—Multiple part housings
    • G01L19/143—Two part housings

Definitions

  • the invention belongs to the technical field of medical devices, and in particular relates to a pipeline pressure monitoring device.
  • the mechanical structure of pressure monitoring devices is common. It is: its mechanical structure includes a guide cap, a guide cap fixing seat, a guide cap bracket, an elastic ring, an elastic ring fixing nut, a conical vent, a sealing ring, and a bracket.
  • the guide cap is made of plastic
  • the elastic ring is made of rubber.
  • the elastic ring covers the outside of the conical vent and is concave.
  • the elastic ring fixing nut is tightened and pressed on the conical vent, and the guide cap is inserted into the concave groove of the elastic ring. fixed on the guide cap holder. Due to its complex mechanical structure and materials, it has the following characteristics: complex structure, large volume, poor smoothness, short life and easy damage.
  • the present invention is made to solve the above problems, and aims to provide a pipeline pressure monitoring device with simple structure, small volume, good smoothness, long life and not easy to be damaged.
  • the present invention provides a pipeline pressure monitoring device, which is characterized by comprising:
  • one side of the casing is provided with a mounting hole
  • vent nozzle the vent nozzle is provided with a vent hole, the vent nozzle is installed in the housing and one end protrudes out of the housing through the mounting hole, and a first stopper is provided on the vent nozzle;
  • a pressure sensor for detecting the pressure in the vent nozzle mounted on the first circuit board and connected to the first circuit board, the pressure sensor communicates with the end of the vent nozzle facing into the housing the holes are matched, and the pressure sensor is installed in the through hole at one end of the vent nozzle facing the inside of the casing, and then the end of the vent nozzle facing the inside of the casing is blocked;
  • the sliding sleeve is slidably installed in the installation hole, the sliding sleeve is provided with a through hole, the sliding sleeve is sleeved on the vent nozzle through the through hole, and a limiting member is arranged on the sliding sleeve, the limiting member is located inside the housing;
  • the installation position of the position sensor satisfies: after the air nozzle is installed in the device, the sliding sleeve is directed to the inside of the casing The sliding distance is just enough to move the magnet block into the detection area of the position sensor.
  • the pipeline pressure monitoring device provided by the present invention may also have the feature that a sealing ring is provided between the pressure sensor and the vent nozzle.
  • the pipeline pressure monitoring device provided by the present invention may also have the following feature: wherein, the elastic member is a spring.
  • the pipeline pressure monitoring device may also have the following feature: wherein a shaft sleeve is further arranged between the sliding sleeve and the vent nozzle, and the shaft sleeve is fixed on the sliding sleeve On the through hole of the said shaft sleeve, the shaft sleeve is slidably sleeved on the ventilation nozzle.
  • the pipeline pressure monitoring device may also have the following characteristics: wherein, the cross section of the end of the vent nozzle facing the outside of the casing is gradually reduced toward the outside of the casing, and the The cross section of the vent hole remains unchanged, the gradually reduced section of the vent nozzle is not in contact with the through hole, and the shaft sleeve is located on the side of the through hole facing the inside of the housing.
  • the utility model has the advantages of simple structure, small volume, good smoothness, long service life and not easy to be damaged.
  • FIG. 1 is a schematic structural diagram of a pipeline pressure monitoring device in an embodiment of the present invention
  • FIG. 2 is a cross-sectional view of the line pressure monitoring device in the embodiment of the present invention.
  • the pipeline pressure monitoring device 100 includes: a casing 10 , a vent 20 , a first circuit board 30 , a pressure sensor 40 , a sliding sleeve 50 , an elastic member 60 , a magnetic block 70 , and a second circuit board 80 and position sensor 90.
  • a side surface of the housing 10 is provided with a mounting hole 11 .
  • the vent 20 is provided with a vent hole 21 , the vent 20 is installed in the housing 10 , one end of the vent 20 extends out of the housing 10 through the mounting hole 11 , and a first stopper 22 is provided on the vent 20 .
  • the first circuit board 30 is mounted on the housing 10 , and the pressure sensor 40 is used to detect the pressure in the vent 20 .
  • the pressure sensor 40 is mounted on the first circuit board 30 and connected to the first circuit board 30 .
  • the pressure sensor 40 is matched with the end of the vent hole 21 facing the inside of the housing 10 , and the pressure sensor 40 is installed on the end of the vent hole 21 facing the inside of the housing 10 and then the end is blocked.
  • the first circuit board 30 and the pressure sensor 40 also play a role in fixing the vent nozzle 20 .
  • a sealing ring 41 is provided between the pressure sensor 40 and the vent nozzle 20 .
  • the sliding sleeve 50 is slidably installed in the installation hole 11, the sliding sleeve 50 is provided with a through hole 51, the sliding sleeve 50 is sleeved on the vent nozzle 20 through the through hole 51, and a limiting member 52 is provided on the sliding sleeve 50, and the limiting member 52 Inside the housing 10 , it is used to restrict the sliding sleeve 50 from sliding out of the mounting hole 11 .
  • a shaft sleeve 53 is further disposed between the sliding sleeve 50 and the vent nozzle 20 .
  • the cross section of the end of the vent 20 facing the outside of the housing 10 is gradually reduced toward the outside of the housing 10 , and the cross section of the vent hole 21 is unchanged.
  • the wall thickness gradually becomes thinner towards the left.
  • one end of the vent nozzle 20 toward the outside of the housing 10 is a hollow cylinder, and the outer diameter of the hollow cylinder toward the outside of the housing 10 gradually decreases, while the inner diameter remains unchanged.
  • the gradually narrowed section of the vent nozzle 20 is not in contact with the through hole 51 , and the shaft sleeve 52 is located on the side of the through hole 51 facing the inside of the housing 10 .
  • the elastic member 60 is sleeved on the vent nozzle 20 and sandwiched between the first block 22 and the sliding sleeve 50 .
  • the elastic member 60 is in a free or slightly compressed state. If the elastic member 60 is in a free state, both ends of the elastic member 60 are also in contact with the first block 22 and the sliding sleeve 50 respectively.
  • the elastic member 60 is a spring.
  • the magnet block 70 is mounted on the sliding sleeve 50 . Specifically, the magnet block 70 is installed at a position where the sliding sleeve 50 is located inside the housing 10 .
  • the second circuit board 80 is mounted on the housing 10 and is connected to the first circuit board 30 .
  • the position sensor 90 is installed on the second circuit board 80 and is connected to the second circuit board 80.
  • the installation position of the position sensor 90 satisfies: after the consumables connector is installed on the air nozzle 20, the sliding sleeve 50 slides to the inside of the housing 10 by just the distance.
  • the magnet block 70 is moved into the detection area of the position sensor 90 .
  • the position sensor 90 is a Hall sensor. When the magnetic block 70 moves into the detection area of the position sensor 90, the position sensor 90 outputs 1; when the magnetic block 70 is not within the detection area of the position sensor 90, the position sensor 90 outputs 0.
  • Both the first circuit board 30 and the second circuit board 80 are connected to an external device for sending the detected pressure information and the signal detected by the position sensor 90 to the external device, and the external device displays the detected data.
  • the consumables connector When the consumables connector is installed on the vent 30, the consumables connector will push the sliding sleeve 50 to move toward the inside of the housing 10, compress the elastic member 60, and the magnetic block 70 moves to the inside of the housing 10 along with the sliding sleeve 50, and the consumables
  • the magnetic block 70 moves to the detection area of the position sensor 90.
  • the position sensor 90 senses, the output signal changes, so it can be judged whether the consumable connector is correctly installed in the air nozzle 30.
  • the pressure sensor 40 detects the gas pressure in the vent 30, so that the gas pressure in the consumable connector connected to the vent 30 and the pipeline of the equipment connected to the consumable connector can be obtained. After the consumable connector is taken out, the sliding sleeve 50 is reset under the elastic force of the elastic member 60 .

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

本发明提供了一种管路压力监测装置，包括外壳、通气嘴、第一电路板、压力传感器、滑套、弹性构件、磁块、第二电路板、位置传感器，通气嘴上设置有第一挡块，通气嘴一端通过外壳的安装孔伸出外壳，另一端安装压力传感器，压力传感器将通气嘴一端封堵，压力传感器安装在第一电路板上，滑套滑动安装在安装孔内且套设在通气嘴上，滑套上设置有限位构件，弹性构件套设在通气嘴上且夹设在第一挡块和滑套之间，磁块安装在滑套上，第二电路与第一电路板连接，位置传感器安装在第二电路板上，与磁块相配合使得滑套滑动时，位置传感器的信号能够发生变化，本发明结构简单、体积小、平顺性好、寿命长，不易损坏且方便磁块的拆卸。

Description

一种管路压力监测装置 技术领域
本发明属于医疗器械技术领域，具体涉及一种管路压力监测装置。
背景技术
在医疗器械应用中，特别是血液处理设备、血液成分采集设备需要对某一系统的压力进行监测，在监测压力的同时，还会对耗材安装情况进行监测，目前，压力监测装置的机械结构普遍为：其机械结构包括导帽、导帽固定座、导帽支架、弹力圈、弹力圈固定螺母、锥形通气嘴、密封圈、支架。其中导帽为塑料材质，弹力圈为橡胶材质，弹力圈罩在锥形通气嘴外部，呈凹形，由弹力圈固定螺母拧紧压在锥形通气嘴上，导帽插入弹力圈的凹形槽中固定在导帽固定座上。由于其复杂的机械结构和材料原因造成其具有以下特点：结构复杂、体积大、平顺性差、寿命短、易损坏。
发明内容
本发明是为了解决上述问题而进行的，目的在于提供一种结构简单、体积小、平顺性好、寿命长、不易损坏的管路压力监测装置。
本发明提供了一种管路压力监测装置，其特征在于，包括：
外壳，所述外壳的一侧面设置有安装孔；
通气嘴，所述通气嘴上设置有通气孔，所述通气嘴安装在所述外壳内且一端通过所述安装孔伸出所述外壳，所述通气嘴上设置有第一挡块；
第一电路板，安装在所述外壳上；
压力传感器，用于检测所述通气嘴内的压力，安装在所述第一电路板上，与所述第一电路板连接，所述压力传感器与所述通气嘴朝向所述外壳内的一端通孔相匹配，所述压力传感器安装在所述通气嘴朝向外壳内的一端通孔内后将所述通气嘴朝向外壳内的一端封堵；
滑套，滑动安装在所述安装孔内，所述滑套上设置有通孔，所述滑套通过所述通孔套设在所述通气嘴上，所述滑套上设置有限位构件，所述限位构件位于所述外壳内部；
弹性构件，套设在所述通气嘴上，且夹设在所述第一挡块和所述滑套之间；
磁块，安装在所述滑套上；
第二电路板，安装在所述外壳上，与所述第一电路板连接；以及
位置传感器，安装在所述第二电路板上，与所述第二电路板连接，所述位置传感器的安装位置满足：所述通气嘴安装进设备内后，所述滑套向所述外壳内部滑动的距离刚好使得所述磁块移动到所述位置传感器的检测区域内。
进一步，在本发明提供的管路压力监测装置中，还可以具有这样的特征：其中，所述压力传感器与所述通气嘴之间设置有密封圈。
进一步，在本发明提供的管路压力监测装置中，还可以具有这样的特征：其中，所述弹性构件为弹簧。
进一步，在本发明提供的管路压力监测装置中，还可以具有这样的特征：其中，所述滑套和所述通气嘴之间还设置有轴套，所述轴套固定在所述滑套的所述通孔上，所述轴套滑动套设在所述通气嘴上。
进一步，在本发明提供的管路压力监测装置中，还可以具有这样的特征：其中，所述通气嘴朝向所述外壳外部的一端的横截面朝向所述外壳外部的方向逐渐缩小，且所述通气孔的横截面不变，所述通气嘴逐渐缩小的一段不与所述通孔接触，所述轴套位于所述通孔朝向所述外壳内部的一侧。
本发明提供了如下优点：
本实用新型具有结构简单、体积小、平顺性好、寿命长、不易损坏等的优点。
附图说明
图1是本发明的实施例中管路压力监测装置的结构示意图；
图2是本发明的实施例中管路压力监测装置的剖视图。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，以下实施例结合附图对本发明的管路压力监测装置作具体阐述。
如图1、图2所示，管路压力监测装置100包括：外壳10、通气嘴20、第一电路板30、压力传感器40、滑套50、弹性构件60、磁块70、第二电路板80和位置传感器90。
外壳10的一侧面设置有安装孔11。
通气嘴20上设置有通气孔21，通气嘴20安装在外壳10内，通气嘴20的一端通过安装孔11伸出外壳10，通气嘴20上设置有第一挡块22。
第一电路板30安装在外壳10上，压力传感器40用于检测通气嘴20内的压力。压力传感器40安装在第一电路板30上，与第一电路板30连接。压力传感器40与通气孔21朝向外壳10内的一端相匹配，压力传感器40安装在通气孔21朝向外壳10内的一端后将该端封堵。通气嘴20安装在上压力传感器40后，第一电路板30和压力传感器40还对通气嘴20起到固定作用。
在本实施例中，压力传感器40与通气嘴20之间设置有密封圈41。
滑套50滑动安装在安装孔11内，滑套50上设置有通孔51，滑套50通过通孔51套设在通气嘴20上，滑套50上设置有限位构件52，限位构件52位于外壳10的内部，用于限制滑套50从安装孔11滑出。
在本实施例中，滑套50和通气嘴20之间还设置有轴套53，轴套53固定在滑套50的通孔51上，轴套53滑动套设在通气嘴20上。
在本实施例中，通气嘴20朝向外壳10外部的一端的横截面朝向外壳10外部的方向逐渐缩小，且通气孔21的横截面不变，即以图2的方向看，通气嘴20的左端的壁厚朝向左逐渐变薄。具体地，通气嘴20朝向外壳10外部的一端为空心圆柱，空心圆柱朝向外壳10外部的方向外径逐渐变小，内径不变。通气嘴20逐渐缩小的一段不与通孔51接触，轴套52位于通孔51朝向外壳10内部的一侧。弹性构件60套设在通气嘴20上，且夹设在第一挡块22和滑套50之间。在通气嘴20上没有安装耗材连接器时，弹性构件60处于自由或微压 缩状态。若弹性构件60处于自由状态，弹性构件60的两端也分别与第一挡块22和滑套50接触。
在本实施例中，弹性构件60为弹簧。
磁块70安装在滑套50上。具体地，磁块70安装在滑套50位于外壳10内部的位置上。
第二电路板80安装在外壳10上，与第一电路板30连接。
位置传感器90安装在第二电路板80上，与第二电路板80连接，位置传感器90的安装位置满足：耗材连接器安装进通气嘴20上后，滑套50向外壳10内部滑动的距离刚好使得磁块70移动到位置传感器90的检测区域内。具体地，位置传感器90为霍尔传感器，当磁块70移动到位置传感器90的检测区域内时，位置传感器90输出1；当磁块70不在位置传感器90的检测区域内时，位置传感器90输出0。
第一电路板30和第二电路板80均与外部设备连接，用于将检测的压力信息和位置传感器90检测的信号发送到外部设备，由外部设备显示检测数据。
在将耗材连接器安装进通气嘴30上时，耗材连接器会推动滑套50向外壳10的内部方向移动，压缩弹性构件60，磁块70随着滑套50向外壳10内部方向移动，耗材连接器安装进通气嘴30上后，磁块70移动到位置传感器90的检测区域内，位置传感器90感应到后，输出信号发生变化，因此可以判断出耗材连接器是否正确地安装进通气嘴30内。压力传感器40检测通气嘴30内的气体压力，从而可以得出与通气嘴30连接的耗材连接器及与耗材连接器连接的设备的管 路中气体的压力。在取出耗材连接器后，在弹性构件60的弹力下，滑套50复位。
上述实施方式为本发明的优选案例，并不用来限制本发明的保护范围。

Claims (5)

  1. 一种管路压力监测装置，其特征在于，包括：
    外壳，所述外壳的一侧面设置有安装孔；
    通气嘴，所述通气嘴上设置有通气孔，所述通气嘴安装在所述外壳内且一端通过所述安装孔伸出所述外壳，所述通气嘴上设置有第一挡块；
    第一电路板，安装在所述外壳上；
    压力传感器，用于检测所述通气嘴内的压力，安装在所述第一电路板上，与所述第一电路板连接，所述压力传感器与所述通气嘴朝向所述外壳内的一端通孔相匹配，所述压力传感器安装在所述通气嘴朝向外壳内的一端通孔内后将所述通气嘴朝向外壳内的一端封堵；
    滑套，滑动安装在所述安装孔内，所述滑套上设置有通孔，所述滑套通过所述通孔套设在所述通气嘴上，所述滑套上设置有限位构件，所述限位构件位于所述外壳内部；
    弹性构件，套设在所述通气嘴上，且夹设在所述第一挡块和所述滑套之间；
    磁块，安装在所述滑套上；
    第二电路板，安装在所述外壳上，与所述第一电路板连接；以及
    位置传感器，安装在所述第二电路板上，与所述第二电路板连接，所述位置传感器的安装位置满足：耗材连接器安装进所述通气嘴上后，所述滑套向所述外壳内部滑动的距离刚好使得所述磁块移动到所述位置传感器的检测区域内。
  2. 根据权利要求1所述的管路压力监测装置，其特征在于：
    所述压力传感器与所述通气嘴之间设置有密封圈。
  3. 根据权利要求1所述的管路压力监测装置，其特征在于：
    所述弹性构件为弹簧。
  4. 根据权利要求1所述的管路压力监测装置，其特征在于：
    所述滑套和所述通气嘴之间还设置有轴套，所述轴套固定在所述滑套的所述通孔上，所述轴套滑动套设在所述通气嘴上。
  5. 根据权利要求4所述的管路压力监测装置，其特征在于：
    所述通气嘴朝向所述外壳外部的一端的横截面朝向所述外壳外部的方向逐渐缩小，且所述通气孔的横截面不变，所述通气嘴逐渐缩小的一段不与所述通孔接触，所述轴套位于所述通孔朝向所述外壳内部的一侧。
PCT/CN2020/141900 2020-11-17 2020-12-31 一种管路压力监测装置 WO2022105036A1 (zh)

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