Summary of the invention
The utility model proposes a kind of infusion pump bubble warning precision measuring and testing device, it is simple in structure, be convenient to assembling, cheap, precision is reliable, is applicable to the production debugging of infusion pump manufacturing enterprise, the quality testing of medical institutions, the security reliability that guarantees infusion pump, has practicality widely.
In order to realize foregoing invention object, this utility model by the following technical solutions:
A kind of infusion pump bubble warning precision measuring and testing device, it comprises signal piping and micro-gas injection device.Described signal piping comprises tee pipe coupling, feed liquor connection tube and fluid connection tube; Feed liquor connection tube is connected with wherein two tube heads of tee pipe coupling respectively with fluid connection tube, and the other end of feed liquor connection tube has the interior taper joint being connected with transfusion device, and the other end of fluid connection tube has the outside cone joint with nut; The 3rd tube head of tee pipe coupling is as gas injection connection tube, and the mouth of pipe is provided with plug, and the 3rd tube head overlaps with the tube hub line of the tube head that is connected fluid connection tube; Described micro-gas injection device is a gas injection device with the demonstration of gas volume amount numeral or scale mark, and its gas injection syringe needle, can be to injecting gas in signal piping through the plug of the gas injection connection tube of described signal piping.
The features such as this utility model, in the situation that not changing any position of infusion pump, can measure detection to infusion pump bubble warning precision, and simple in structure, certainty of measurement is high, and practicality is good.For infusion pump manufacturing enterprise and medical institutions, the bubble of infusion pump is detected to quality control and proposed a detection method reliably.On portable fluid Beng Zhongduiye road, change a little to measure and detect the object that quantizes metering infusion pump foam control precision to realize.For other type, need to check the infusion set of bubble, according to this design concept, can reach the object that checks foam control precision.
accompanying drawing explanation
Fig. 1 is scheme of installation of the present utility model;
Fig. 2 is the structural representation that the bubble of infusion pump of the present utility model detects connection tube.
In figure: 1. transfusion bag 2. dropping funnel 3. pipeline 4 flow regulator 5. bubbles detect the outside cone joint of the micro-gas injection device 7. infusion pump 8. air bubble sensor interior taper joint 52. feed liquor connection tube 53. tee pipe coupling 54. plug .55. fluid connection tubes 56. of 9. liquid receptacle 51. of dedicated line 6 with nut.
The specific embodiment
Below in conjunction with accompanying drawing, further illustrate structure of the present utility model and operation principle:
Referring to Fig. 1, the utility model proposes the bubble warning precision measuring and testing device of infusion pump, it comprises a micro-gas injection device 6 and a signal piping 5.
Trace gas injection device 6 is the gas injection devices with gas volume amount numeral demonstration (or scale mark), there is gas injection plug, gas injection cylinder and gas injection syringe needle, can adopt current medical industry to use precise micro pipettor widely, be general biotic experiment or the precision instrument of medical chemical examination use, here it is reversed application, becomes an accurate gas injection pump, its metering is adjustable, measuring accuracy is high, reaches l(microlitre) magnitude, can meet the requirement that bubble detects.As this micro-gas injection device used time, do not use its pipette, in the import department that pipette is installed, install suitable gas injection syringe needle, in order in Xiang Ye road, inject air.This precise micro pipettor can need to be selected different specifications and model according to detecting.
The structure of signal piping 5 is referring to Fig. 2, and it is comprised of interior taper joint 51, feed liquor connection tube 52, tee pipe coupling 53, plug 54, fluid connection tube 55 and the outside cone joint with nut 56.Feed liquor connection tube 52 is connected with wherein two tube heads of tee pipe coupling 53 respectively with fluid connection tube 55, and the other end of feed liquor connection tube 52 has the interior taper joint 51 being connected with transfusion device, and the other end of fluid connection tube 55 has the outside cone joint 56 with nut.The 3rd tube head of tee pipe coupling 53 is as gas injection connection tube, and the mouth of pipe is provided with 54, the three tube heads of plug and overlaps with the tube hub line of the tube head that is connected fluid connection tube.
Referring to Fig. 1, below describe installation connected mode and the operation principle of this device in detail:
Install: taper joint 51 in the feed liquor connection tube of signal piping 5 is connected with the outside cone joint of the upper syringe needle of transfusion device, the feed liquor syringe needle of transfusion device inserts (or bottle) on fluid bag 1, first close flow regulator 4, according to the installation method of infusion pump, infusion pump 7 is installed, fluid connection tube 55 is arranged in infusion pump 7, the stalagmometer of infusion pump is counted device and is installed on dropping funnel 2, installs infusion needle put into liquid receptacle 9 at the outside cone joint with nut 56 of fluid connection tube 55.Turn-on flow rate controller 4, normally works it by the method for operation in operation of infusion pump, when different amount of infusion, infusion pump is carried out to foam control triggering precision and tests.
Detection method: suitable gas injection syringe needle is arranged on micro-gas injection device 6, regulate the gear of micro-gas injection device 6 to suitable displacement position, syringe needle is inserted three-way pipe rubber plug from the center of the plug 54 of signal piping, until syringe needle enters 3 millimeters of places of liquid of pipeline, hands four fingers and the centre of the palm micro-gas injection device 6 of holding with a firm grip, thumb is depressed rapidly the gas injection plug of micro-gas injection device 6, will determine in measured gas inject pipeline and take out micro-gas injection device 6.Wait for that liquid drives bubble to move to infusion pump air bubble sensor under the driving of infusion pump, after arriving sensor, see whether infusion pump reports to the police, if do not report to the police, strengthen again gas volume, re-inject test, until report to the police, the current gas value of injecting is exactly the bubble alarming value of this infusion pump.If injecting gas realizes bubble warning for the first time, can reduce gas volume, re-inject test, until do not report to the police, the current alarming value of injecting gas volume is before exactly the bubble alarming value of this infusion pump.The flow that changes infusion pump is tested with same method again, until reach test objective.Can according to circumstances to infusion pump, adjust, it be reached and meet the requirements.
And for the current infusion pump of some new constructions, as the micro machine infusion pump (patent No.: ZL20101916005.1) of the applicant's development and the infusion board assembly (patent No.: ZL2010 2 9211023.1) of micro motor infusion pump, also can adopt design concept of the present utility model to carry out deformation design, can reach equally the object that checks foam control precision.