• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A parenteral liquid infusion set comprises flow tubing, and means for connection to blood vessel penetrating means and a parenteral liquid source at opposite ends thereof. A drip chamber is present in the set having a tubular drop-forming member of reduced inner diameter. An intermediately positioned site is present for providing access to the interior of the set from the exterior, the site being positioned downstream from the drip chamber. In accordance with this invention, a portion of the fluid flow tubing downstream from the connection site defines a bore of reduced diameter, when compared with the remainder of the flow tubing, to prevent the creation of a less than atmospheric pressure in the set and to prevent air from being sucked into the flow tubing through an administration set connected at the intermediately positioned site.
    公开号:SU845756A3
    申请号:SU762375455
    申请日:1976-06-24
    公开日:1981-07-07
    发明作者:Энтони Вайрэг Роберт
    申请人:Бакстер Лабораториз Инк (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to medical technology. A device for intravenous infusion is known, which contains containers for infusion solutions with dispensing tubes, including droppers with drop-forming tubular elements, a common intermediate pipe, end flexible tubes, blood vessels, and adapters for the addition of gas and drugs 1. However Using this device does not exclude the likelihood of air entering the blood vessel, which leads to the development of an air embolism. The aim of the invention is to increase airborne safety. This goal is achieved by the fact that in the device the flexible end tubes have an opening diameter from 0.254 to 1.016 mm and a length of not less than 127 mm, and the cap-forming tubes are made with an internal opening diameter from 0.254 to 1.016 mm and a wall thickness of a greater wall thickness of the flexible tube. FIG. 1 shows a general intravenous infusion device in general view5 in FIG. 2 is a section A-A of FIG. Is in FIG. 3 is a section BB of FIG. 1. The device contains a source of infusion fluid in the form of a container, a distribution tube 2 with droplets 3, including a drip head) tube 4, a connecting end tube 5 and means of insertion into a blood vessel, including needle holder 6 with a needle 7. In addition, the device contains intermediately installed means supply of medical preparations to the device from the external environment, which include a container 8 for medical preparations, a flexible tube 9 equipped with a clamp 10 and a dropper 11 with a dripping tube 12. The tube 9 is connected to the distribution tube 2 via a tee 13. The distribution tube 2 is provided with a valve 14 for one-way operation and a clamp 15. The flexible end tube 5 has an inside diameter of the opening 16 from .0.254 to 1.016. 3) and a length of at least 127 mm. Distributor tube 2 has a hole diameter of 17 from 1.27
    up to 3.8 mm. Drop-forming tubes 4 and 12 are made with an internal diameter of the hole from 0.254 to 1.016 mm and a wall thickness of a greater wall thickness of the flexible tube 2.
    When the device is in operation, the selected diameter of the hole and the length of the tube 5 create conditions for the outflow of fluid, whereby the possibility of air being sucked into the distribution tube 2 from the intermediately installed means of supplying medical preparations from the external pipe is connected. Moreover, these conditions are preserved even in the case of complete emptying of the container 8 for medical preparations. If medical devices are supplied to the device from an intermediate means under pressure, which exceeds the pressure in the device, it may be possible for fluid from tube 9 to flow upwards through tee 13 in direction K of tank 1. To eliminate this probability, valve 14 interferes with the flow of fluid up to the drop of the shadow pipe 4 and the tank 1.
    Thus, the design of the device ensures that air does not enter the circulatory system during infusion of the infusion fluid. In this way, the safety of the intravenous infusion is ensured.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    A device for intravenous infusion, containing containers for infu3 ionic solutions with dispensing tubes, including droppers with droplet-forming tubular elements, a common intermediate pipe, end flexible tubes, blood vessel attachment elements, and adapters for additional administration of gas and drugs.
    5 media, characterized in that, in order to increase airborne safety, flexible end tubes have an orifice diameter of 0.254 to 1.016 mm and a length of no less than 127 mm, and the drop-curvature tubular elements are made with an internal orifice diameter of 0.254 to 1.016 mm and wall thickness greater wall thickness of the flexible end tube.
    Sources of information taken into account in the examination 1. USA Avenue Abbot Laboratories Pliapar V-Type Administration Set. 1974.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU845756A3|1981-07-07|Device for inner injection
    US4013072A|1977-03-22|Drip chamber for intravenous administration
    FI70141C|1986-09-15|OEVERFOERINGSANORDNING
    US5941848A|1999-08-24|Passive drug delivery apparatus
    US4623343A|1986-11-18|Parenteral fluid administration apparatus and method
    US3934576A|1976-01-27|Central venous catheter system
    KR100540965B1|2006-01-10|Enclosed ambulatory pump
    US4198971A|1980-04-22|Drip chamber with air vent
    US3092106A|1963-06-04|Administration equipment
    US3177870A|1965-04-13|Secondary administration system
    US4874369A|1989-10-17|Self-priming injection site with check valve
    US4318400A|1982-03-09|Medical infusor
    US3852385A|1974-12-03|Gas humidification apparatus
    US2409343A|1946-10-15|Fluid inlet-outlet device, particularly for clinical purposes
    US5324258A|1994-06-28|Reservoir module for a drug delivery system
    US2784733A|1957-03-12|Check valve for parenteral solutions
    US3682168A|1972-08-08|Sterile liquid entraining system
    EP0314602A2|1989-05-03|Plug device for a transfusible fluid container
    US3965895A|1976-06-29|Apparatus for controlled volume and rate administration of liquids
    JP2000354628A|2000-12-26|Flow rate restricting drip chamber for intravenous drip injection and supply system
    JPH0722600B2|1995-03-15|Catheter, ▲ irrigation unit and ▲ connection device for flask of fluid to be irrigated
    US6106504A|2000-08-22|Drip chamber for medical fluid delivery system
    US4576594A|1986-03-18|Vented drip chamber for use with a syringe
    US4243033A|1981-01-06|Catheter delivery system
    US3380449A|1968-04-30|Cartridge with burstable seal
    同族专利:
    公开号 | 公开日
    US4105029A|1978-08-08|
    US4034754A|1977-07-12|
    DE2621542B2|1978-09-07|
    CA1068569A|1979-12-25|
    GB1537718A|1979-01-04|
    ZA762003B|1977-03-30|
    BR7604401A|1978-01-31|
    AU1264176A|1977-10-13|
    DE2621542C3|1979-05-03|
    SE428645B|1983-07-18|
    MX147888A|1983-01-31|
    DE2621542A1|1977-03-10|
    FR2320113A1|1977-03-04|
    FR2320113B1|1982-04-23|
    BE840807A|1976-08-02|
    ES450541A1|1977-12-01|
    JPS6054070B2|1985-11-28|
    IL49307A|1978-07-31|
    IL49307D0|1976-05-31|
    SE7608418L|1977-02-08|
    NL7604005A|1977-02-09|
    JPS5222392A|1977-02-19|
    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/602,614|US4034754A|1975-08-07|1975-08-07|Intravenous solution set having a constricted inner diameter portion|
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