Gas-liquid separation syringe
Technical field
The present invention relates to a kind of medical supplies, especially, is a kind of syringe.
Background technology
When medical personnel use syringe extracting liquid medicine, usually along with minute bubbles in pharmaceutical liquid, the medicine that mixes in advance is needed for some, needs before extraction to rock, mix homogeneously, make the bubble in syringe more in this case; Conventional syringe, after extracting liquid, needs syringe needle to leave standstill upward or the barrel that flicks syringe floats on syringe needle place to make bubble, is being discharged by gas by promotion piston; This injector operations trouble, has a strong impact on injection efficiency, can waste some drugs liquid simultaneously in the process of bubble discharge.
Summary of the invention
For the problems referred to above, the invention provides a kind of gas-liquid separation syringe, this syringe can say the interior bubble coalescence of syringe, and divided gas flow in injection process, effectively improves injection efficiency.
For solving the problem, the technical solution adopted in the present invention is: the syringe offering pin hole at the bottom of this gas-liquid separation syringe includes tin, is provided with the piston that can slide up and down along the barrel of syringe in described syringe; At described pin hole place, buoyancy switch is installed; At the bottom of the cylinder of described syringe, be fixed with air dividing plate, described air dividing plate is provided with the wind wheel that freely can rotate along the axis of described syringe.
The invention has the beneficial effects as follows: under naturalness, described buoyancy switch is closed condition, and now syringe is air-tight state, and this structure can ensure the cleaning of syringe inside; When needs extracting liquid, stir piston and syringe internal gas pressure is reduced, buoyancy switch is opened under the influence of air pressure, and liquid enters in syringe; Liquid flows through from the wind wheel on air dividing plate after entering pin hole, and liquid drives wind wheel to rotate; What enter with liquid also has bubble, and bubble wafts to syringe top in tornado shape under the drive of natural buoyancy and wind wheel, and the bubble being partly adhered to syringe barrel wafts to syringe top in the process of liquid in rotation; The bubble at top collects and is fused into air layer; In injection process, pin hole is towards hemostasis; Being dipped in water due to buoyancy switch and being held open, now liquid can be injected smoothly, and wind wheel rotates under the drive of liquid; But injecting latter stage, along with the minimizing of liquid, wind speed round reduces gradually, and when liquid flows clean gradually, buoyancy switch is closed gradually, after liquid infusion is complete, buoyancy switch is closed and also by the gas partitions in syringe, is effectively prevented gas inject human body.
The present invention is easy and simple to handle, and without the need to adjusting the bubble in syringe after extracting liquid, the present invention can voluntarily by gas barrier when injecting; When extracting liquid, by the rotation of wind wheel, the present invention can stir further liquid, mix, make medicine evenly; Speed and the injection progress of injection can be observed easily by the rotation observing wind wheel; The present invention substantially increases injection efficiency, alleviates the operating pressure of medical personnel.
As preferably, described buoyancy switch includes the fluid dividing cover being fixed on pin hole place and the buoyancy plate be arranged in described fluid dividing cover; Described fluid dividing cover offers liquid outlet; Described buoyancy plate just also can along the axis of pin hole at fluid dividing cover slide over side walls to described pin hole; When not having liquid, buoyancy plate falls under gravity and blocks pin hole, now needle cylinder airtight; When after extracting liquid in syringe, buoyancy plate floats and opens pin hole, now can normal infusion; When the liquid infusion in syringe is complete, buoyancy plate falls under gravity and closes pin hole, effectively prevents the gas in syringe from entering pin hole.
As preferably, described air dividing plate to press close to tin at the bottom of plate face be the cambered surface caved inward; So that the bubble from pin hole inspiration to be pooled to the central authorities of air dividing plate, to be convenient to air dividing plate and bubble to be stirred, collects.
As preferably, described wind wheel scribbles colour bar; The speed rotated by wind wheel can learn the speed of liquid infusion; If the rotation of wind wheel is slack-off when the dynamics of pushing syringe is constant, can learn that syringe is about to inject liquid, colour bar can make the rotation of wind wheel more eye-catching.
Accompanying drawing explanation
Cross-sectional view when Fig. 1 is the not drawing liquid of this gas-liquid separation syringe embodiment.
Cross-sectional view when Fig. 2 is drawing liquid embodiment illustrated in fig. 1.
Detailed description of the invention
Embodiment
In the embodiment shown in Fig. 1, Fig. 2, offer the syringe 1 of pin hole 11 at the bottom of this gas-liquid separation syringe includes tin, the piston 2 that can slide up and down along the barrel of syringe 1 is installed in described syringe 1; At described pin hole 11 place, buoyancy switch is installed; Described buoyancy switch includes the fluid dividing cover 3 being fixed on pin hole 11 place and the buoyancy plate 4 be arranged in described fluid dividing cover 3; Described fluid dividing cover 3 offers liquid outlet 31; Described buoyancy plate 4 just also can along the axis of pin hole 11 at fluid dividing cover 3 slide over side walls to described pin hole 11; At the bottom of the cylinder of described syringe 1, be fixed with air dividing plate 5, described air dividing plate 5 to press close to tin at the bottom of plate face be the cambered surface caved inward; Described air dividing plate 5 is provided with the wind wheel 6 that freely can rotate along the axis of described syringe 1, described wind wheel 6 scribbles colour bar.
Under naturalness, pin hole 11 blocked under gravity by described buoyancy plate 4, and now pin hole 11 is in closed condition, and now syringe 1 is in air-tight state, and this structure can ensure the cleaning of syringe 1 inside; When needs extracting liquid, stir piston 2 and syringe 1 internal gas pressure is reduced, described buoyancy plate 4 is opened under the influence of air pressure, and liquid enters syringe 1 from the liquid outlet 31 of fluid dividing cover 3; Liquid flows through from the wind wheel 6 on air dividing plate 5 after entering pin hole 11, and liquid drives wind wheel 6 to rotate; What enter with liquid also has bubble, and bubble wafts to syringe 1 top in tornado shape under the drive of natural buoyancy and wind wheel 6, and the bubble being partly adhered to syringe 1 barrel wafts to syringe 1 top in the process of liquid in rotation; The bubble at top collects and is fused into air layer; In injection process, pin hole 11 is towards hemostasis; Because buoyancy plate is dipped in liquid, be held open under the effect of buoyancy, now liquid can be injected smoothly, and meanwhile, wind wheel 6 rotates under the drive of liquid; But injecting latter stage, along with the minimizing of liquid, wind wheel 6 rotating speed reduces gradually, when liquid flows clean gradually, buoyancy plate 4 position declines gradually and is blocked by pin hole 11, after liquid infusion is complete, buoyancy switch is closed, and the gas now in syringe 1 is separated, and effectively prevents gas inject human body.
Air dividing plate 5 in the present embodiment to press close to tin at the bottom of plate face be the cambered surface caved inward; Bubble from pin hole inspiration can be pooled to the central authorities of air dividing plate by this structure, and namely all bubbles, all through the stirring of wind wheel 6, effectively can promote that bubble rotates and rise and collect.
The present invention is easy and simple to handle, when extracting liquid, the bubble entered with liquid can quick collecting to piston 2 end, when injecting, this syringe can separate bubbles and liquid automatically, without the need to adjusting the bubble in syringe, effectively improves injection efficiency; When extracting liquid, by the rotation of wind wheel 6, the present invention can stir further liquid, mix, make medicine evenly; In addition, speed and the injection progress of injection can be observed by the rotation observing wind wheel 6 easily, on wind wheel, scribble colour bar in the present embodiment, the rotation of wind wheel can be made more eye-catching; The present invention substantially increases injection efficiency, alleviates the operating pressure of medical personnel.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.