WO2019227302A1 - 穿戴式血压计 - Google Patents

穿戴式血压计 Download PDF

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Publication number
WO2019227302A1
WO2019227302A1 PCT/CN2018/088819 CN2018088819W WO2019227302A1 WO 2019227302 A1 WO2019227302 A1 WO 2019227302A1 CN 2018088819 W CN2018088819 W CN 2018088819W WO 2019227302 A1 WO2019227302 A1 WO 2019227302A1
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WO
WIPO (PCT)
Prior art keywords
air
air pressure
plug
pressure
safety
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PCT/CN2018/088819
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English (en)
French (fr)
Inventor
杨胜周
Original Assignee
深圳市永盟电子科技限公司
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Application filed by 深圳市永盟电子科技限公司 filed Critical 深圳市永盟电子科技限公司
Priority to PCT/CN2018/088819 priority Critical patent/WO2019227302A1/zh
Publication of WO2019227302A1 publication Critical patent/WO2019227302A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/021—Measuring pressure in heart or blood vessels
    • A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
    • A61B5/0225—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers the pressure being controlled by electric signals, e.g. derived from Korotkoff sounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/021—Measuring pressure in heart or blood vessels
    • A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
    • A61B5/0235—Valves specially adapted therefor

Definitions

  • the invention relates to a blood pressure measuring instrument, in particular to a wearable blood pressure monitor.
  • Existing blood pressure measurement devices are connected through air-tight components such as a sealed air pressure line, an inflatable motor, a cuff airbag, a solenoid valve, a slow vent valve and a pressure sensor.
  • the cuff airbag is pressurized by an inflation motor to complete the blood pressure measurement.
  • an electronic pressure sensor is usually connected in the air pressure line. When the wearable sphygmomanometer circuit safety control function is normal, the pressure is continued.
  • the pressure sensor when the pressure of the air pressure line reaches 300 mm Hg, the pressure sensor will send The signal is sent to the MCU main control chip (MCU), the MCU will order the inflatable motor to stop the inflation work, and instruct the battery valve to open the valve to quickly deflate to achieve the purpose of releasing the air pressure of the cuff airbag and protect the user for safe measurement.
  • MCU MCU main control chip
  • the sphygmomanometer is an electronic device, consisting of hundreds of electronic components, the abnormal function of various electronic components or the abnormal operation of the embedded software in the sphygmomanometer may cause the wearable sphygmomanometer circuit to be safely controlled in different application environments.
  • the function fails, such as the sphygmomanometer stops the motor from inflating, but the motor continuously inflates continuously, or the sphygmomanometer opens the solenoid valve, the solenoid valve is always closed, the pressure sensor senses the pressure of the pneumatic circuit, and so on. At this time, the sphygmomanometer itself could not detect whether the pressure of the cuff balloon was overpressure in time, and the entire sphygmomanometer system lacked a safety protection device, which would cause harm to the user of the wearable sphygmomanometer.
  • the pneumatic motor continuously inflates the air pressure pipeline, and the components on the air pressure pipeline are closely fitted with the interference of the pipeline, and will not be separated from the pipeline due to the increase of the pipeline gas pressure. Tighten the user's arm. At this time, the sphygmomanometer will hurt the user, and cannot realize the safety protection function to protect the user from injury during the blood pressure measurement.
  • This type of sphygmomanometer still has a lot of potential safety hazards, and it is a ubiquitous safety hazard of sphygmomanometers currently on the market. This kind of safety hazard is particularly prominent in the application of wearable 24-hour dynamic sphygmomanometers.
  • the present invention aims to solve the above problems, and provides a wearable sphygmomanometer that prevents users from being harmed while measuring blood pressure and has higher safety.
  • a wearable sphygmomanometer includes a pneumatic circuit and a pneumatic component connected to the pneumatic circuit.
  • the pneumatic component includes an inflatable motor, a solenoid valve, a first pressure sensor, and a cuff airbag.
  • the cuff airbag is inflated.
  • the wearable sphygmomanometer also includes a safety air plug sealing an opening of the air pressure pipe. The opening is opened on the air pressure pipe or the air pressure component, and the safety air plug can be in the air pressure pipe. When the internal air pressure value reaches a predetermined value, the overpressure protection plug of the safety air plug is opened by the air pressure pushing force in the air pressure pipeline to realize rapid venting, so as to prevent the safety hazard caused by the high pressure of the cuff air bag.
  • the inflation motor continuously inflates and pressurizes the air pressure line, and the internal pressure of the sphygmomanometer cuff balloon and air pressure line continuously increases.
  • the safety air plug can burst through the increased pressure of the air pressure pipeline to open the specially designed sealing structure of the air lock to realize the rapid release of the air pressure of the cuff airbag to prevent the cuff. Excessive air pressure in the airbag creates a safety hazard during blood pressure measurement.
  • the safety air stopper includes an air stopper seat and an overpressure protection plug, and the air stopper seat is sealed with the air pressure pipe through an interference fit, and the friction force of the interference fit is greater than a gas pressure in the air pressure line to a predetermined value At this time, the air pressure arm receives the air pressure pushing force.
  • the air plug seat is provided with an air guide hole communicating with the inflation pipe.
  • the overpressure protection plug seals the air guide hole and the air pressure value inside the inflation pipe is greater than the predetermined air pressure. When the value is reached, it is ejected from the air hole and quickly deflated.
  • the pneumatic component further includes a slow-release valve and a second pressure sensor.
  • the safety air stopper includes an air stopper seat and an overpressure protection plug, and the air stopper seat is sealed with the air pressure pipe through an interference fit, and the friction force of the interference fit is greater than a gas pressure in the air pressure line to a predetermined value At that time, the air pressure seat is subject to the pressure of the air pressure.
  • the air plug seat is provided with an air guide hole communicating with the inflation pipe.
  • the overpressure protection plug seals the air guide hole.
  • the air pressure value in the inflation pipe is greater than the predetermined air pressure value. At this time, the overpressure protection plug is ejected from the air guide hole and quickly deflated under the action of the pressure pushing force in the air pressure pipeline.
  • the cross section of the airlock seat in the axial center direction is an inverted T shape and is made of a rigid material.
  • the cross-section of the overpressure protection plug in the axial direction is trapezoidal or inverted T-shaped, and a seal ring is provided on the outer side of the overpressure protection plug.
  • the safety air plug includes an air plug arm and an overpressure protection plug, the air plug arm and the air pressure line are sealed by an interference fit, and the friction force of the interference fit is greater than the gas pressure in the air pressure line to reach the predetermined At the time of pressure, the air pressure seat is subject to the air pressure pushing force.
  • the air plug arm is provided with an air guide hole communicating with the inflation pipe.
  • the overpressure protection plug is sleeved at one end of the air plug arm and seals the air guide hole.
  • the overpressure protection plug When the air pressure value in the pipeline is greater than the predetermined value, the overpressure protection plug is separated from the gas plug arm by the pressure pushing force in the air pressure pipeline, so that the air pressure pipeline is quickly vented to prevent the cuff balloon Excessive air pressure creates a safety hazard, realizing safety protection when the air pressure pipeline is over-pressurized.
  • the gas plug arm is provided with a wedge-shaped end corresponding to the overpressure protection plug, and the cross-section of the overpressure protection plug along the axial center direction is U-shaped.
  • an elastic member is provided in the safety air plug, which is used for resetting the over-pressure protective plug after the gas is deflated.
  • a wearable sphygmomanometer includes a pneumatic circuit and a pneumatic component connected to the pneumatic circuit.
  • the pneumatic component includes an inflatable motor, a solenoid valve, a first pressure sensor, and a cuff airbag.
  • the cuff airbag is inflated.
  • the wearable sphygmomanometer also includes a safety air plug sealing an opening of the air pressure tube.
  • the safety air plug includes a solid air plug, and the opening is opened on the air pressure tube or the air pressure component.
  • the safety air lock can open the air lock by the pressure pushing force in the air pressure line to realize rapid venting, so as to prevent the high pressure of the cuff airbag from causing a hidden safety hazard. .
  • the cross section of the solid air plug in the axial direction is an inverted T-shape, and the air pressure component further includes a slow vent valve and a second pressure sensor.
  • the blood pressure monitor designed in this way can continue to complete the blood pressure measurement and truly achieve the goal of safety and effectiveness of the medical device.
  • the positive effect of the present invention is that when all the designed circuit safety control functions of the sphygmomanometer fail, the air pressure may threaten the life safety of the user of the sphygmomanometer.
  • the optimized design of the mechanical structure is to use the air pressure pushing force in the air pressure pipeline to deflate to prevent the cuff airbag from having too high air pressure to create hidden dangers and realize the role of user safety protection.
  • FIG. 1 is a schematic diagram of a sphygmomanometer inflation air path in a first embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view of the airlock in FIG. 1.
  • FIG 3 is a schematic cross-sectional view of a safety plug in a second embodiment of the present invention.
  • FIG. 4 is a schematic cross-sectional view of a safety plug in a second embodiment of the present invention.
  • FIG. 5 is a schematic cross-sectional view of a safety plug in a second embodiment of the present invention.
  • FIG. 6 is a schematic cross-sectional view of an overpressure protection plug in another embodiment of the present invention.
  • FIG. 7 is a schematic cross-sectional view of an overpressure protection plug in another embodiment of the present invention.
  • an element when an element is considered to be “connected” to another element, it may be directly connected to another element or there may be a centrally-positioned element at the same time.
  • an element When an element is considered to be “disposed on” another element, it can be an element that is disposed directly on another element or a centrally disposed element may be present at the same time.
  • An embodiment of the present invention relates to a wearable blood pressure monitor 100.
  • the wearable sphygmomanometer 100 includes a pneumatic circuit 10 and a pneumatic component connected through the pneumatic circuit 10.
  • the pneumatic component includes an inflating motor 11, a venting solenoid valve 13, and a slow The quick-release valve 14, the first pressure sensor 15, the second pressure sensor 16, the cuff airbag 17, and the air stop 18.
  • the air pressure pipe 10 is provided with an opening 101, and the safety gas plug 18 seals the opening 101.
  • the safety air plug 18 is a solid air plug.
  • the solid air plug 18 and the air pressure line 10 are sealed by an interference fit.
  • the solid air plug 18 can be used when the air pressure value inside the air pressure line 10 is greater than a predetermined air pressure value. It pops out from the air pressure pipe, realizes the rapid venting of the air pressure pipe, and releases the pressure of the cuff balloon.
  • the predetermined air pressure value can be set to 300 mmHg or according to actual needs.
  • the cross section of the solid gas plug 18 in the axial direction is an inverted T shape.
  • the solid gas plug 18 gradually narrows upward from the bottom end.
  • an elastic member can be provided on the outer side of the solid gas plug 18 to reset the solid gas plug 18 after it is deflated.
  • the inflating motor 11 inflates into the air pressure pipeline 10, and the bleed solenoid valve communicates with the air path and keeps the valve closed.
  • the slow vent valve communicates with the pipeline to maintain uniform venting.
  • the first pressure sensor 15 and the second pressure sensor 16 simultaneously sense the pressure in the pneumatic line 10.
  • the cuff airbag 17 receives the inflation pressure of the tube from the inflatable motor 11, and the gas is continuously filled into the cuff airbag 17 to pressurize the human arm.
  • the first pressure sensor 15 or the second sensor 16 transmits the pressure to the micro processing for control, thereby realizing blood pressure measurement. Using the first pressure sensor 15 and the second pressure sensor 16 at the same time can achieve double insurance.
  • the second pressure sensor 16 can continue to complete the blood pressure measurement, while ensuring that the air pressure is controlled within a safe pressure range. Achieve safe use of the sphygmomanometer when the patient is not capable of protecting himself and avoid accidents.
  • the air lock can be quickly deflated when it is not fully ejected, so that the elastic member can be pushed against the outside of the air lock to cause the air lock to deflate and then move back to achieve the purpose of cycle detection.
  • the inflation motor 11 When an extreme situation occurs, that is, when both pressure sensors fail, the inflation motor 11 will continue to inflate, but neither the bleed solenoid valve 13 nor the slow vent valve 14 can achieve the exhaust of the sphygmomanometer cuff airbag 17 when the inflation tube
  • the safety air plug 18 When the air pressure in the road 10 reaches 300 mmHg, the safety air plug 18 will be directly blown away by the increased air pressure, and the air pressure in the inflation pipe 10 will be quickly deflated to realize the function of protecting the safety of the user.
  • a wearable sphygmomanometer has a different air lock design.
  • the wearable sphygmomanometer includes a safety air stop 28, and the safety air stop 28 includes an air stop 281 and An overpressure protection plug 285, the air plug seat 281 and the air pressure pipe 10 are sealed by an interference fit.
  • the air plug seat 281 is provided with an air guide hole 282 communicating with the inflation pipe 10.
  • the over pressure protection plug 285 seals one end of the air guide hole 282 and When the internal air pressure value of the inflation line 10 is greater than a predetermined air pressure value, the air pressure pushing force in the air pressure line can open the overpressure protection plug 285 of the safety air plug, thereby realizing rapid venting.
  • the cross section of the gas plug seat 28 in the axial direction is an inverted T shape and is made of a rigid material.
  • the cross-section of the overpressure protection plug 285 in the axial direction is trapezoidal.
  • an elastic member can be provided on the outer side of the overpressure protection plug 285 to restore the pressure after the overpressure protection plug 285 is deflated.
  • the overpressure protection plug 285 of the safety air plug 28 When in use, when the air pressure in the inflation line 10 reaches 300 mmHg, the overpressure protection plug 285 of the safety air plug 28 will be directly pushed away by the increased air pressure pushing force, and the air pressure in the inflation line 10 is quickly released to achieve Features to protect users.
  • a wearable sphygmomanometer has a number of overpressure protection plugs different from the second embodiment.
  • the wearable sphygmomanometer includes a safety air plug 38 and a safety air plug 38. Including an air plug seat 381 and two overpressure protection plugs 385, the air plug seat 381 and the air pressure pipe 10 are sealed by an interference fit.
  • the air plug seat 381 is provided with two air guiding holes 382 and 383 communicating with the inflation pipe 10,
  • the pressure protection plug 385 seals one end corresponding to the air guide hole 382, and can pop up the overpressure protection plug 385 randomly when the internal air pressure value of the inflation pipe 10 is greater than a predetermined air pressure value, so as to realize rapid gas discharge.
  • the provision of two overpressure protection plugs 385 is from the perspective of reliability. Assuming that one of the safety protection plugs fails, the other safety protection plug can achieve the intended function, which can improve the reliability of the sphygmomanometer overpressure safety protection function.
  • the cross section of the airlock seat 38 in the axial direction is an inverted T shape and is made of a rigid material.
  • the cross-sections of the two overpressure protection plugs 385 in the axial center direction are trapezoidal or combined trapezoidal.
  • an elastic member can be provided on the outer side of the two overpressure protection plugs 385 to reset the two overpressure protection plugs 385 after the air is vented.
  • one of the two overpressure protection plugs 385 of the safety air plug 38 will be directly opened by the increased air pressure, and the air pressure in the inflation line 10 is quickly released. Realize the function of protecting patient safety.
  • the performance of the safety plug is optimal.
  • one overpressure protection plug ages and fails, the other can also play a protective role.
  • a wearable blood pressure monitor has a different air lock design.
  • the wearable blood pressure monitor includes a safety air plug 48, and the safety air plug 48 includes an air plug arm 481 and Overpressure protection plug 485, the gas plug arm 481 and the air pressure pipe 10 are sealed by interference fit.
  • the gas plug arm 481 is provided with an air guide hole 482 that communicates with the inflation pipe 10.
  • the overpressure protection plug 485 is sleeved on one end of the air plug arm 481.
  • the air guiding hole 482 is sealed, and the overpressure protection plug 481 can be separated from the gas plug arm under the action of the pressure of the air pressure in the air pressure pipeline when the air pressure value inside the inflation line 10 is greater than a predetermined air pressure value.
  • the air plug arm 481 is provided with a wedge-shaped end corresponding to the overpressure protection plug 485.
  • the cross-section of the overpressure protection plug 485 in the axial direction is U-shaped and made of a flexible material.
  • an elastic member for resetting the overpressure protection plug 485 after the gas is vented may be provided on the outside of the safety gas plug 48.
  • the overpressure protection plug 485 of the safety air plug 48 will be directly flushed by the increased air pressure, and the air pressure in the inflation line 10 is quickly released to protect the safety of the user. Functions.
  • the opening 101 may be directly provided on the pipeline of the inflation pipeline 10 or may be integrated with other components connected to the inflation pipeline 10, such as a pressure sensor or a vent valve, to facilitate manufacturing and save costs.
  • the overpressure protection plug 285 in the second embodiment and the overpressure protection plug 385 in the third embodiment may have other shapes.
  • an overpressure protection plug 68 is provided on the outside.
  • the overpressure protection plug 285 in the second embodiment and the overpressure protection plug 385 in the third embodiment may have other shapes.
  • a front end of an overpressure protection plug 78 is provided. Highlight lips 785 to increase retention.
  • the wearable sphygmomanometer 100 changes the structure of the traditional sealed airway air stopper and adds a pressure protection plug.
  • the increase in air pressure in the air pressure line threatens the life of the patient.
  • the mechanical structure must be optimized to automatically reduce the pressure in the air circuit to realize the safety protection function of the user's blood pressure monitor.
  • the air pressure overpressure protection plug is designed according to the physical characteristics of the material, so that it releases the air pressure in the predetermined pressure range, thereby realizing the function of the sphygmomanometer to protect the safety of the patient.
  • the safe pressure release range of the sphygmomanometer can be set between 300-305 mm Hg, but it can also be designed to any value between 299-350 mm Hg, the specific protection pressure is based on the overpressure of the air lock
  • the design of the protective plug depends on the needs. According to relevant industry standards, the sphygmomanometer deflation requires that the pressure in the inflation line can be reduced from 260 mm Hg to 15 mm Hg in no more than 10 seconds. In this embodiment, the safety air stop can achieve rapid degassing. The time for the air pressure in the inflation line to fall from 300 mm Hg to 15 mm Hg is designed to be within the range of 1-30 seconds according to specific needs.

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Abstract

穿戴式血压计（100），包括气压管路（10）及连接该气压管路（10）的气压部件，该气压部件包括充气马达（11）、电磁阀（13）、压力传感器（15，16）及袖带气囊（17）。穿戴式血压计（100）还包括一密封该气压管路（10）一开口处的安全气塞（18），开口开设于气压管路（10）或气压部件上。该安全气塞（18）能在该气压管路（10）内气压值达到预定值时通过该气压管路（10）内的气压推挤泄气以防止气压过高产生安全隐患。

Description

穿戴式血压计 技术领域
本发明涉及一种血压测量仪器，特别涉及一种穿戴式血压计。
 背景技术
现有的血压测量装置是通过密封的气压管路、充气马达，袖带气囊，电磁阀，慢速泄气阀及压力传感器等气路部件相连，通过充气马达对袖带气囊进行加压完成血压测量，为保证加压安全，通常会在气压管路内连接电子压力传感器，当穿戴式血压计电路安全控制功能正常时继续加压，如气压管路压力达到300毫米汞柱时，压力传感器会发送信号给单片机主控芯片（MCU），MCU会命令充气马达以停止充气工作，并且命令电池阀打开阀门快速泄气，以实现释放袖带气囊气压的目的，保护使用者进行安全测量。因为血压计是电子仪器，由上百个电子零部件组成，对于不同应用环境时各类电子零组件出现功能异常，或者血压计内部嵌入式软件运行异常，都可能使穿戴式血压计电路安全控制功能失效，如血压计让马达停止充气，马达反而在不断连续充气，或者血压计让电磁阀打开，电磁阀就一直关闭，压力传感器感应气路压力失效等等。这时血压计本身并未有能够及时检测袖带气囊压力是否过压，整个血压计系统缺乏安全保护装置，会对穿戴式血压计的使用者造成伤害。譬如压力传感器工作失效时，充气马达连续不断给气压管路充气，气压管路上的部件都与管路过盈配合紧密，不会因管路气体压力增加与管路分离，不断增加气压通过袖带气囊压紧用户手臂，这时血压计会伤害用户，不能实现在血压测量过程中保护用户免受伤害的安全保护功能。这种血压计仍存在很大的安全隐患，而且是目前市场上血压计普遍存在的安全隐患，在穿戴式24小时动态血压计应用中这样的安全隐患尤为突出。
 技术问题
本发明旨在解决上述问题，而提供一种测量血压时用户免受伤害且具有更高安全性的穿戴式血压计。
 技术解决方案
一种穿戴式血压计，包括气压管路及连接该气压管路的气压部件，该气压部件包括充气马达、电磁阀、第一压力传感器及袖带气囊，该充气马达通过该气压管路对该袖带气囊充气，该穿戴式血压计还包括一密封该气压管路一开口处的安全气塞，该开口开设于该气压管路或该气压部件上，该安全气塞能在该气压管路内气压值达到预定值时通过该气压管路内的气压推挤力冲开该安全气塞的过压保护塞，实现快速泄气，以防止袖带气囊气压过高产生安全隐患。
该穿戴式血压计充气过程中，在其内部的电路安全控制功能失效时，导致所述充气马达连续不断给气压管路充气加压，该血压计袖带气囊和气压管路内部压力不断增高，该安全气塞能在该气压管路内气压增高到预定值时，通过该气压管路内增加的气体压力冲开该安全气塞特别设计的密封结构实现快速释放袖带气囊气压，以防止袖带气囊气压过高产生血压测量过程的安全隐患。
进一步地，该安全气塞包括气塞座及过压保护塞，该气塞座与该气压管路通过过盈配合密封，该过盈配合的摩擦力大于该气压管路内气体压力达到预定值时该气塞臂受到的气压推挤力，该气塞座开设有连通该充气管路的导气孔，该过压保护塞密封该导气孔并能在该充气管路内部气压值大于该预定气压值时从导气孔弹出并快速泄气。
进一步地，该气压部件还包括慢速泄气阀及第二压力传感器。
进一步地，该安全气塞包括气塞座及过压保护塞，该气塞座与该气压管路通过过盈配合密封，该过盈配合的摩擦力大于该气压管路内气体压力达到预定值时该气塞座受到的气压推挤力，该气塞座开设有连通该充气管路的导气孔，该过压保护塞密封该导气孔，在该充气管路内气压值大于该预定气压值时，该过压保护塞在该气压管路内的气压推挤力作用下从该导气孔弹出并快速泄气。
进一步地，该气塞座的沿轴心方向的横截面为倒T型并由刚性材料制成。
进一步地，该过压保护塞沿轴心方向的横截面为梯形或倒T形，该过压保护塞的外侧设有密封圈。
进一步地，该安全气塞包括气塞臂及过压保护塞，该气塞臂与该气压管路通过过盈配合密封，该过盈配合的摩擦力大于该气压管路内气体压力达到该预定值时该气塞座受到的气压推挤力，该气塞臂开设有连通该充气管路的导气孔，该过压保护塞套设于该气塞臂一端并密封该导气孔，在该充气管路内气压值大于该预定值时，该过压保护塞在该气压管路内的气压推挤力作用下与该气塞臂分离，使该气压管路快速泄气，以防止该袖带气囊气压过高产生安全隐患，实现该气压管路过压时的安全保护。
进一步地，该气塞臂对应该过压保护塞设有楔形末端，该过压保护塞沿轴心方向的横截面为U型。
进一步地，该安全气塞内设有弹性件，用于使该过压保护塞泄气后复位。
一种穿戴式血压计，包括气压管路及连接该气压管路的气压部件，该气压部件包括充气马达、电磁阀、第一压力传感器及袖带气囊，该充气马达通过该气压管路对该袖带气囊充气，该穿戴式血压计还包括一密封该气压管路一开口处的安全气塞，该安全气塞包括一实心气塞，该开口开设于该气压管路或该气压部件上，该安全气塞能在该气压管路内气压值达到预定值时通过该气压管路内的气压推挤力冲开该安全气塞，实现快速泄气，以防止袖带气囊气压过高产生安全隐患。
进一步地，该实心气塞的沿轴心方向的横截面为倒T型，该气压部件还包括慢速泄气阀及第二压力传感器。
这样设计的血压计，在穿戴式血压计电路安全控制功能复位后，如软件升级，硬件维修等等，可以继续完成血压测量，真正实现医疗器械的安全有效的目标。
 有益效果
本发明的积极效果在于，当血压计所有设计的电路安全控制功能失效时，气路气压可能会威胁到血压计使用者生命安全，安全气塞能在气压管路内气压达到预定值时，通过机械结构的优化设计即利用气压管路内的气压推挤力泄气的方式以防止袖带气囊气压过高产生安全隐患，实现用户安全保护的作用。
 附图说明
图1是本发明第一实施方式中一血压计充气气路示意图。
图2是图1中安全气塞的剖视示意图。
图3是本发明一第二实施方式中安全气塞的剖视示意图。
图4是本发明一第二实施方式中安全气塞的剖视示意图。
图5是本发明一第二实施方式中安全气塞的剖视示意图。
图6是本发明另一实施方式中过压保护塞的剖视示意图。
图7是本发明又一实施方式中过压保护塞的剖视示意图。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明的是，当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中设置的元件。当一个元件被认为是“设置于”另一个元件，它可以是直接设置在另一个元件上或者可能同时存在居中设置的元件。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本发明。本文所使用的术语“及／或”包括一个或多个相关的所列项目的任意的和所有的组合。
本发明一实施方式涉及一种穿戴式血压计100。
请参阅图1，本发明第一实施方式中，穿戴式血压计100包括一气压管路10及通过该气压管路10连接的气压部件，气压部件包括充气马达11、放气电磁阀13、慢速泄气阀14、第一压力传感器15、第二压力传感器16、袖带气囊17及安全气塞18。气压管路10设有一开口101，安全气塞18密封开口101。
请继续参考图2，安全气塞18为一实心气塞，实心气塞18与该气压管路10通过过盈配合密封，实心气塞18能在充气管路10内部气压值大于预定气压值时从气压管路弹出，实现气压管路快速泄气，释放袖带气囊压力。预定气压值可设定为300毫米汞柱或根据实际需求设定。实心气塞18的沿轴心方向的横截面为倒T型。实心气塞18自底端向上逐渐缩窄。在其他实施方式中，实心气塞18的外侧可设有使该实心气塞18泄气后复位的弹性件。
正常使用时，充气马达11向气压管路10内充气，放气电磁阀联通气路并保持阀门关闭。慢速泄气阀联通管路保持匀速泄气，第一压力传感器15和第二压力传感器16同时感应气压管路10内压力。袖带气囊17接收管路自充气马达11的充气气压，气体不断充入袖带气囊17，对人体手臂进行加压。通过第一压力传感器15或第二传感器16将压力传递给微处理进行控制，实现血压测量。同时使用第一压力传感器15和第二压力传感器16可实现双保险，当第一压力传感器15失效时，第二压力传感器16可继续完成测量血压，同时保证气路气压控制在安全压力范围内，在病人没有能力保护自己时实现血压计的安全使用，避免病人发生意外。安全气塞可在未完全弹出时快速泄气，这样弹性件可推抵安全气塞外侧使安全气塞泄气后回移，以实现循环检测的目的。
当发生极端情况时，即两压力传感器全部失效时，充气马达11仍会不断充气，而放气电磁阀13和慢速泄气阀14都不能实现血压计袖带气囊17的排气，当充气管路10内的气压达到300毫米汞柱时，安全气塞18会直接被增大的气压冲开，充气管路10气压以快速泄气，实现保护用户安全的功能。
请继续参阅图3，在本发明第二实施方式中，一穿戴式血压计具有不同的安全气塞设计，该穿戴式血压计包括一安全气塞28，安全气塞28包括气塞座281及过压保护塞285，气塞座281与气压管路10通过过盈配合密封，气塞座281开设有连通该充气管路10的导气孔282，过压保护塞285密封导气孔282的一端并能在充气管路10内部气压值大于预定气压值时，该气压管路内的气压推挤力冲开安全气塞的过压保护塞285，实现快速泄气。气塞座28沿轴心方向的横截面为倒T型并由刚性材料制成。过压保护塞285的沿轴心方向的横截面为梯形。在本实施方式中，过压保护塞285的外侧可设有使过压保护塞285泄气后复位的弹性件。
使用时，当充气管路10内的气压达到300毫米汞柱时，安全气塞28的过压保护塞285会直接被增大的气压推挤力冲开，充气管路10气压快速释放，实现保护用户安全的功能。
请继续参阅图4，在本发明第三实施方式中，一穿戴式血压计具有与第二实施方式数量不同的过压保护塞，该穿戴式血压计包括一安全气塞38，安全气塞38包括气塞座381及两过压保护塞385，气塞座381与气压管路10通过过盈配合密封，气塞座381开设有连通该充气管路10的两导气孔382及383，两过压保护塞385密封对应导气孔382一端，并能在充气管路10内部气压值大于预定气压值时随机弹出过压保护塞385，实现快速泄气。设置两过压保护塞385，是从可靠性角度出发，假设其中一个安全保护塞失效，另外一个安全保护塞可以实现预期功能，就能提高血压计过压安全保护功能的可靠性。气塞座38的沿轴心方向的横截面为倒T型并由刚性材料制成。两过压保护塞385的沿轴心方向的横截面为梯形或组合梯形。在本实施方式中，两过压保护塞385的外侧可设有使两过压保护塞385泄气后复位的弹性件。
使用时，当充气管路10内的气压达到300毫米汞柱时，安全气塞38的两过压保护塞385其中之一会直接被增大的气压冲开，充气管路10气压快速释放，实现保护病人安全的功能。使用两个过压保护塞时，安全塞性能最优，在其中一个过压保护塞老化失效时，另一个还能起到保护作用。
请继续参阅图5，在本发明第四实施方式中，一穿戴式血压计具有不同的安全气塞设计，该穿戴式血压计包括一安全气塞48，安全气塞48包括气塞臂481及过压保护塞485，气塞臂481与气压管路10通过过盈配合密封，气塞臂481开设有连通充气管路10的导气孔482，过压保护塞485套设于气塞臂481一端并密封导气孔482，过压保护塞481能在充气管路10内部气压值大于预定气压值时，该过压保护塞在该气压管路内的气压推挤力作用下与该气塞臂分离，使该气压管路快速泄气。气塞臂481对应过压保护塞485设有楔形末端。过压保护塞485的沿轴心方向的横截面为U型，且由柔性材料制成。在本实施方式中，该安全气塞48外侧可设有使过压保护塞485泄气后复位的弹性件。
使用时，当充气管路10内的气压达到300毫米汞柱时，安全气塞48的过压保护塞485会直接被增大的气压冲开，充气管路10气压快速释放，实现保护用户安全的功能。
本发明的实施方式中，开口101可直接设置于充气管路10的管道上也可集成于连接在充气管路10上的其他元件，如压力传感器或泄气阀上，以方便制造和节省成本。
请继续参阅图6，在第二实施方式中的过压保护塞285及第三实施方式中的过压保护塞385可为其他形状，在其他实施方式中，一过压保护塞68外侧设有若干环形密封圈688，以增大摩擦力。
请继续参阅图7，在第二实施方式中的过压保护塞285及第三实施方式中的过压保护塞385可为其他形状，在其他实施方式中，一过压保护塞78前端设有突出唇边785，以增加固持力。
本发明实施方式中，穿戴式血压计100改变传统密封气路气塞的结构，增加气压保护塞，当血压计所有设计的电路安全控制功能失效时，气压管路气压增加威胁到病人生命安全时，必须有针对气压管路气压达到300毫米汞柱以上时，通过机械结构的优化设计，使气路自动降压，实现用户血压计监测过程的安全保护功能。本实施方式中，按照材料的物理特性设计气压过压保护塞，使其在预定的压力范围之内释放气路气压，实现血压计保护病人安全的功能。血压计安全的压力释放范围可设置在300-305毫米汞柱之间，但也可以根据需要设计在299-350毫米汞柱之间的任一值，具体保护压力是按照安全气塞的过压保护塞的设计需要而定。根据相关行业标准，血压计泄气要求能够将充气管路内的气压从260毫米汞柱降到15毫米汞柱的时间应不超过10秒，本实施方式中，安全气塞能够实现快速泄气，将充气管路内的气压从300毫米汞柱降到15毫米汞柱的时间根据特定需要设计为1-30秒范围内。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种穿戴式血压计，包括气压管路及连接该气压管路的气压部件，该气压部件包括充气马达、电磁阀、第一压力传感器及袖带气囊，该充气马达通过该气压管路对该袖带气囊充气，其特征在于：该穿戴式血压计还包括一密封该气压管路一开口处的安全气塞，该开口开设于该气压管路或该气压部件上，该安全气塞能在该气压管路内气压值达到预定值时通过该气压管路内的气压推挤力冲开该安全气塞的过压保护塞，实现快速泄气，以防止袖带气囊气压过高产生安全隐患。
  2. 一种如权利要求1所述的穿戴式血压计，其特征在于：该气压部件还包括慢速泄气阀及第二压力传感器。
  3. 一种如权利要求1所述的穿戴式血压计，其特征在于：该安全气塞包括气塞座及过压保护塞，该气塞座与该气压管路通过过盈配合密封，该过盈配合的摩擦力大于该气压管路内气体达到预定值时该气塞座受到的气压推挤力，该气塞座开设有连通该充气管路的导气孔，该过压保护塞密封该导气孔，在该充气管路内气压值大于该预定气压值时，该过压保护塞在该气压管路内的气压推挤力作用下从该导气孔弹出并快速泄气。
  4. 一种如权利要求3所述的穿戴式血压计，其特征在于：该气塞座的沿轴心方向的横截面为倒T型并由刚性材料制成。
  5. 一种如权利要求3所述的穿戴式血压计，其特征在于：该过压保护塞沿轴心方向的横截面为梯形或倒T形，该过压保护塞的外侧设有密封圈。
  6. 一种如权利要求1所述的穿戴式血压计，其特征在于：该安全气塞包括气塞臂及过压保护塞，该气塞臂与该气压管路通过过盈配合密封，该过盈配合的摩擦力大于该气压管路内气体压力达到该预定值时该气塞臂受到的气压推挤力，该气塞臂开设有连通该充气管路的导气孔，该过压保护塞套设于该气塞臂一端并密封该导气孔，在该充气管路内气压值大于该预定值时，该过压保护塞在该气压管路内的气压推挤力作用下与该气塞臂分离，使该气压管路快速泄气，以防止该袖带气囊气压过高产生安全隐患，实现该气压管路过压时的安全保护。
  7. 一种如权利要求6所述的穿戴式血压计，其特征在于：该气塞臂对应该过压保护塞设有楔形末端，该过压保护塞沿轴心方向的横截面为U型。
  8. 一种如权利要求1-7任一项所述的穿戴式血压计，其特征在于：该安全气塞内设有弹性件，用于使该过压保护塞泄气后复位。
  9. 一种穿戴式血压计，包括气压管路及连接该气压管路的气压部件，该气压部件包括充气马达、电磁阀、第一压力传感器及袖带气囊，该充气马达通过该气压管路对该袖带气囊充气，其特征在于：该穿戴式血压计还包括一密封该气压管路一开口处的安全气塞，该安全气塞包括一实心气塞，该开口开设于该气压管路或该气压部件上，该安全气塞能在该气压管路内气压值达到预定值时通过该气压管路内的气压推挤力冲开该安全气塞，实现快速泄气，以防止袖带气囊气压过高产生安全隐患。
  10. 一种如权利要求9所述的穿戴式血压计，其特征在于：该实心气塞的沿轴心方向的横截面为倒T型，该气压部件还包括慢速泄气阀及第二压力传感器。
PCT/CN2018/088819 2018-05-29 2018-05-29 穿戴式血压计 WO2019227302A1 (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2065875U (zh) * 1989-09-13 1990-11-21 张则开 全塑式医用血压计
US5447160A (en) * 1990-07-11 1995-09-05 Instrumentarium Corporation Restriction of pressure in a cuff for use in sphyghmomanometry
CN1784171A (zh) * 2003-05-15 2006-06-07 魁凯尔有限公司 血压监护仪
US20070142731A1 (en) * 2005-12-20 2007-06-21 Shenzhen Mindray Bio-Medical Electronics Co., Ltd Non-invasive electronic method and apparatus for measuring blood pressure
CN101103908A (zh) * 2006-07-11 2008-01-16 深圳迈瑞生物医疗电子股份有限公司 一种无创血压测量装置及其安全保护方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2065875U (zh) * 1989-09-13 1990-11-21 张则开 全塑式医用血压计
US5447160A (en) * 1990-07-11 1995-09-05 Instrumentarium Corporation Restriction of pressure in a cuff for use in sphyghmomanometry
CN1784171A (zh) * 2003-05-15 2006-06-07 魁凯尔有限公司 血压监护仪
US20070142731A1 (en) * 2005-12-20 2007-06-21 Shenzhen Mindray Bio-Medical Electronics Co., Ltd Non-invasive electronic method and apparatus for measuring blood pressure
CN101103908A (zh) * 2006-07-11 2008-01-16 深圳迈瑞生物医疗电子股份有限公司 一种无创血压测量装置及其安全保护方法

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