A kind of fixed dosage single injection gas-driven needle-less syringeTechnical field
The utility model relates to medical devices field, in particular to a kind of fixed dosage single injection gas-driven needle-less injectionDevice.
Background technique
Needleless injector do not need when drug is injected by syringe needle, using high-pressure jet principle, so that medicineLiquid forms thinner fluid, and moment penetrates skin and reaches subcutaneous.
Needleless injection can't see syringe needle, will psychologically be preferably minimized to the conflict for the treatment of, and the compliance for the treatment of will mentionHeight, especially Children with Diabetes.Needleless injection can bring many benefits to diabetic, have and greatly reduced needle injectionThe benefits such as device bring pain, the formation hardened after being injected repeatedly without injection site.
More successful needleless injector product mostly uses power source of the brute spring as syringe in the market, small in size,It is light-weight, easy to carry, but after the completion of per injection, it is also necessary to spring is re-compressed accumulation of energy by dedicated resetting apparatus,Operating process is excessively cumbersome.Additional reset energy storage equipment is not needed as power source using compressed gas, simplifies operation journeySequence.
Utility model content
The purpose of this utility model is to provide a kind of gas-driven needle-less syringes, for big injection dosage, it can be achieved that singleMedicine single injection is taken out, pressure adjusting can be carried out to gas source, not only realize the injection of different parts and depth.
To achieve the above object, the utility model uses following technical scheme:
A kind of fixed dosage single injection gas-driven needle-less syringe characterized by comprising power supply device, powerUnit, emission type chamber, hand-held protective case, collet, gun barrel, disposable ampoule；It is intracavitary that the power unit is set to emission type；It is describedIt is intracavitary that hand-held protective case is set to emission type；The collet is fixedly arranged on emission type cavity wall；The gun barrel is connected with emission type chamber；The disposable ampoule is detachably connected with gun barrel；The power supply device includes gas source, reversal valve and air hose, describedGas source output pipe is equipped with regulator and pressure gauge, and the gas outlet of gas source is connected by the reversal valve with air hoseIt connects, the air hose is connected with power unit.
Further, the power unit includes reversed vent plug, magnetic push rod；The reversed vent plug is equipped with and magnetic push rodVent plug bolt, venthole and the venthole mutually attracted, the venthole and venthole one end are connected with an air hose respectively,The other end is connected with the intracavitary chamber of emission type, and the vent plug bolt is equipped with the through-hole that is connected with venthole, the through-hole withMagnetic putting back-end face is vertically arranged.
Further, the reversed vent plug is equipped with recessed portion close to magnetic push rod one end, and the recessed portion inner surface is equipped withInternal screw thread, the vent plug bolt surface is equipped with the external screw thread screwed with internal screw thread, vent plug bolt and reversed vent plug can by screw threadDismantling connection.
Further, the vent plug bolt material is steel, preferably AISI 1018.
Further, the venthole other end is set to reversed vent plug avris, the hand-held protective case (4) and collet (5)Between be equipped with gas passage, described gas passage one end is connected with venthole, and the other end is connected with magnetism push rod sliding spaceIt is logical.
Further, the gas source is air compressor or air accumulator.
Further, the reversal valve is pedal reversal valve.
Further, the power supply device further includes counter, and the counter is connected with the reversal valve.
Further, the venthole and venthole are connected by Pneumatic quick connector with air hose.
Further, the Pneumatic quick connector is connected by rotation lid with air hose.
Above-mentioned gas-driven needle-less syringe adjusts gas source output gas by the way that regulator is arranged on gas source output pipePressure value is required pressure value, and then changes magnetic push rod emission rate, realizes the injection of different parts and injection depth；Anti-Venthole there are two setting on vent plug, is connected with air hose by Pneumatic quick connector and is connected with reversal valve, thisKind design makes gas flow between two ventholes only by the way that reversal valve is arranged on power supply device, by controlling reversal valveThe advance and reset of magnetic push rod are realized in switching, compared with prior art, it is simple to simplify needleless injector body construction.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodimentNeeded in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only in the utility modelThe some embodiments recorded are also possible to obtain other drawings based on these drawings for those of ordinary skill in the art.
Fig. 1 is the utility model pneumatic injector structural schematic diagram；
Fig. 2 is the appearance diagram of the utility model；
Fig. 3 is the utility model pneumatic injector power supply device schematic diagram.
Wherein, the above drawings include the following reference numerals:
1, power supply device, 2, power unit, 3, emission type chamber, 4, hand-held protective case, 5, collet, 6, gun barrel, 7, oneSecondary property ampoule, 8, rotation lid, 9, Pneumatic quick connector, 101, air hose, 102, reversal valve, 103, gas source, 104, pressure regulation dressIt sets, 105, pressure gauge, 106, counter, 201, magnetic push rod, 202, vent plug bolt, 203, reversed vent plug, 203-1, venthole,203-2, venthole, 701, injection putter, 702, injection micropore.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, by the following examples, it and tiesAttached drawing is closed, the gas-driven needle-less syringe of the utility model is further elaborated.It should be appreciated that tool described hereinBody embodiment only to explain the utility model, is not used to limit the utility model.
It should be noted that it can be directly anchored to another when element is referred to as " being fixed on " another elementOn element or another element can also be fixed on by element placed in the middle.When an element be known as " connection " anotherElement, it can be directly to another element or be also possible to be connected to another yuan by element placed in the middlePart.In addition, unless otherwise indicated, otherwise the descriptions such as the term " first " in specification and " second " are used only for distinguishing specificationIn various components, element, step etc., without being intended to indicate that various components, element, the logical relation between step or suitableOrder relation etc..
It please refers to shown in Fig. 1 and Fig. 2, in one preferred embodiment of pneumatic injector of the utility model,
A kind of fixed dosage single injection gas-driven needle-less syringe, including power supply device (1), power unit (2),Emission type chamber (3), hand-held protective case (4), collet (5), gun barrel (6), disposable ampoule (7)；The power unit (2) is set to hairIn emitting chamber (3)；The hand-held protective case (4) is set in emission type chamber (3)；The collet (5) is fixedly arranged on emission type chamber (3)Inner wall；The gun barrel is connected with emission type chamber (3)；The disposable ampoule (7) is detachably connected with gun barrel (6)；It is described dynamicPower supply unit (1) includes gas source (103), reversal valve (102) and air hose (101), gas source (103) output pipeIt is equipped with regulator (104) and pressure gauge (105), the gas outlet of gas source (103) passes through the reversal valve (102) and gas transmissionHose (101) is connected, and the air hose (101) is connected with power unit (2).
Preferably, the power unit (2) includes reversed vent plug (203), magnetic push rod (201)；The reversed vent plug(203) it is equipped with vent plug bolt (202), venthole (203- 1) and the venthole (203-2) mutually attracted with magnetic push rod (201),The venthole (203-1) and the one end venthole (203-2) are connected with an air hose (101) respectively, the other end and transmittingType chamber (3) inner cavity is connected, and the vent plug bolt (202) is equipped with the through-hole being connected with venthole (203-1), described logicalHole is vertically arranged with magnetic push rod (201) rear end face.
Preferably, the reversed vent plug (203) is equipped with recessed portion, the recessed portion inner surface close to magnetic push rod one endEquipped with internal screw thread, vent plug bolt (202) surface is equipped with the external screw thread that screws with internal screw thread, vent plug bolt (202) and reversedVent plug (203) is detachably connected by screw thread.
Preferably, vent plug bolt (202) material is steel, further preferably AISI 1018.
Preferably, venthole (203-2) other end is set to reversed vent plug (203) avris, the hand-held protective case(4) gas passage is equipped between collet (5), described gas passage one end is connected with venthole (203- 2), the other end andMagnetic push rod (201) sliding space is connected.
Preferably, the gas source (103) is air compressor or air accumulator.
Preferably, the reversal valve (102) is pedal reversal valve.
Preferably, the power supply device (1) further includes counter (106), the counter (106) with it is describedReversal valve (102) is connected.
Preferably, the venthole (203-1) and venthole (203-2) are soft by Pneumatic quick connector (9) and gas transmissionPipe (101) is connected.
Preferably, the Pneumatic quick connector (9) is connected by rotation lid (8) with air hose (101).
Gas-driven needle-less syringe disclosed by the utility model is adjusted by the way that regulator is arranged on gas source output pipeGas source output gas pressure value is required pressure value, and then changes magnetic push rod emission rate, realizes that different parts and injection are deepThe injection of degree.Venthole there are two setting on reversed vent plug, is connected and is changed with air hose by Pneumatic quick connectorIt is connected to valve, this design makes gas flow only by the way that reversal valve is arranged on power supply device, by controlling reversal valveSwitch between two ventholes, realize the advance and reset of magnetic push rod, compared with prior art, simplifies needleless injector ontologyStructure is simple.
Counter is set on reversal valve, for recording frequency injection.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned realityIt applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not depositedIn contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this fieldFor art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged toThe protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.