KR101282666B1 - Bypass type needlefree injector - Google Patents

Abstract

The present invention relates to a drug bypass type needleless syringe used for injecting a drug into the skin of a livestock.
The present invention utilizes the power of the spring as an energy source for drug injection, and a new type that can control the dose of drug as well as the dose of drug through the launch unit including a valve combination of supply side, injection side and bypass side By implementing the needleless injection method, the overall structure can be simplified, and the amount of drug injection can be adjusted to provide a bypass type automatic needleless syringe that can be administered according to the injection amount (vaccine dose) of each application.

Description

Bypass type needle free injector {Bypass type needlefree injector}

The present invention relates to a bypass type automatic needleless syringe, and more particularly, to a drug bypass type needleless syringe used for injecting a drug into the skin of a livestock.

In general, a syringe is a form of injecting injection liquid after placing the hole of the needle tip in the subcutaneous fat by using a needle, and the sonar due to the long-term use of the needle, rejection of contaminants, pain caused by injection In the case of livestock such as pigs, it was a big inconvenience.

As a method of not using a needle, there is a method of injecting injection liquid into subcutaneous fat by using compressed air, but there is a disadvantage in that it is inconvenient to use an air compression device separately.

After all, there is a need for injection solution injection means that can be easily used, prevent contamination and can be used without causing pain.

That is, injection of the drug is typically performed using a soaked syringe, which has various problems associated with a soaked syringe, including cross contamination of the subject to be injected, pain associated with such an injection, and the possibility of a needle breaking and falling off in the subject to be injected. There is this.

Broken needles within a subject may not only be detrimental to the health and safety of the subject, but may also have significant economic disadvantages.

In an attempt to circumvent the problems associated with currently used immersion syringes, more and more efforts are being made to develop needleless syringes.

Such needleless syringes are needleless syringes, which are usually referred to as devices capable of injecting high pressure injections.

Needleless syringes are typically powered by an external gas source to provide sufficient energy to move the liquid through the skin.

The needs of external gas sources can be cumbersome and disadvantageous to users because they cannot be modified for use in the premises such as offices, laboratories, livestock cages and the like.

In addition, the conventional needle-free syringe has a difficulty in maintaining a constant injection amount of the drug, there is a limit to adjust the drug injection amount other than the injection amount set at the time of manufacture.

In addition, it may be inconvenient to store this type of external power source, and in particular, conventional needleless syringes typically have the disadvantage of increasing design costs due to the complexity of the design, as well as the cost of impact noise during injection, There is a disadvantage of being expensive.

Accordingly, the present invention has been made in view of the above, and uses the power of the spring as an energy source for drug injection, and quantitates drug through a launch unit including a valve combination of supply side, injection side and bypass side. By injecting, as well as a new type of non-invasive injection method that can control the amount of drug injection, the overall structure can be simplified, and the amount of drug injection can be adjusted so that it can be administered according to the injection amount (vaccine dose) of each application. The purpose is to provide an automatic needleless syringe.

In order to achieve the above object, the bypass type automatic needleless syringe provided by the present invention has the following features.

The bypass type automatic needleless syringe includes a power unit for returning the piston using a motor and a gear combination, an accumulator for providing a pressure required for drug injection by operating the piston using a trigger pull operation and a spring force, and a drug. It is provided with a injection unit for injecting the drug through the injection port of the tip by receiving the piston operating force, and the supply unit for supplying the drug into the interior of the launch unit, and made of a structure using the power of the spring as an energy source for drug injection, In addition to simplifying the structure, there is a feature that can improve the performance according to the drug dosing and injection amount control.

Here, the power unit is composed of a motor that is installed inside the handle portion of the syringe body, and a plurality of gears arranged in engagement with each other and one gear is electrically connected to the shaft of the motor while the other gear It is preferable to comprise a structure including a gear assembly that is electrically connected to the accumulator side.

And, in the case of the accumulator, the piston housing which is arranged side by side inside the body portion of the syringe body and the trigger for intermittent movement of the piston housing and both ends are supported on the inside of the front end of the piston housing and the rear end of the body. It can be configured to include a structure including a power spring for elastically pushing the piston housing while being mounted concentrically on the outer end of the piston housing to pressurize the drug.

In addition, in the case of the launch unit, the launch unit block having a drug chamber for storing the drug to be injected therein, and connected to the axial rear end of the launch unit block and mounted on the muzzle portion of the syringe body to prevent the movement of the piston A guiding piston adapter, an inlet adapter for injecting drugs while having an inlet at an end thereof connected to the axial distal end of the launcher block, an injector check valve mounted inside the inlet adapter, and a radius of the launcher block It may be configured to include a supply side adapter connected to the outer peripheral portion to supply the drug and a supply check valve mounted inside the supply side adapter.

In particular, the bypass type automatic needleless syringe may further include a bypass device for recovering by bypassing the drug remaining after drug injection, wherein the bypass device is a radial direction of the launch block in the launch unit. Through the bypass side adapter connected to the outer peripheral portion and the bypass check valve mounted inside the bypass side adapter, and the bypass line extending from the bypass side adapter, the drug is returned from the bypass side adapter. It is preferable to comprise in the form containing the tank to store.

The bypass automatic needleless syringe provided by the present invention has the following advantages.

First, since the method of operating the piston for drug injection using the spring, it is possible to significantly reduce the manufacturing cost, such as simple design of the structure.

Second, since the force for drug injection can be adjusted according to the type of spring (spring elastic modulus change), and the drug can be injected by adjusting the flow rate of the firing part, so that the dosage of the drug can be adjusted according to the dosage of various applications. I can regulate it.

Third, it is economical by bypassing the remaining drugs used for metering and reusing them, thereby preventing the waste of drugs.

1 is a schematic diagram showing a bypass type automatic needleless syringe according to an embodiment of the present invention.
Figures 2a to 2c is a perspective view showing the launch unit in the bypass automatic needleless syringe according to an embodiment of the present invention
Figure 3a and 3b is a schematic diagram showing the operating state of the bypass type automatic needleless syringe according to an embodiment of the present invention

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram showing a bypass type automatic needleless syringe according to an embodiment of the present invention.

As shown in FIG. 1, the bypass type automatic needleless syringe is a syringe which injects a drug by applying pressure through a piston using elasticity of a spring to skin of an animal such as a cow or a pig. Consists of the power unit 10, the accumulator 11, the launch unit 12, and includes a supply unit 13 for drug supply.

Here, the power unit 10, the accumulator 11 and the launch unit 12 is provided in the tip or the interior of the syringe body 14 made in the shape of a gun (Gun), the power unit 10 is a gun handle Inside the part, the accumulator part 11 is provided inside the gun body part, and the firing part 12 is installed in front of the gun muzzle part.

The power unit 10 is a means for returning the piston by using the power supply of the motor and the electric action of the gear, and includes a motor 15, a gear assembly 16 and the like.

The motor 15 is installed inside the handle portion of the syringe body 14, and may be powered from the outside or operated through an internal battery, and the bevel gear is mounted on the shaft of the motor 15, Through this, power can be transmitted to the gear assembly 16 side.

Here, the motor 15 can be operated by receiving an electrical signal from the percussion device.

For example, a sensor (not shown) senses a forward position of the piston housing 17, which will be described later, and the motor 15 operates by output control of the controller while a detection signal is input to the controller (not shown). You can do it.

Alternatively, the motor can be operated by using a switch signal by the pulling operation of the trigger 33 described later.

Of course, the trigger 33 is a means for triggering the piston, it is possible to provide a signal for operation of the motor, such as a contact signal according to the position of the trigger after triggering.

The gear assembly 16 is a means for receiving power from the motor 15 and pulling the entire piston housing 17 including the piston 19 to be described later to the rear to return to the initial position (reverse position) before the trigger.

This gear assembly 17 is composed of three gears 16a, 16b, and 16c having two gear trains, and each of the gears 16a, 16b, and 16c is freely rotatable on the syringe body 14. As they are installed together, they interlock with each other in a structure that can engage with each other.

One of these gears 16a, 16b, 16c is engaged with the gear on the shaft of the motor 15, and the other gear 16c is the rack gear 34 in the piston housing 17. Meshes with.

In particular, the gear 16c engaged with the rack gear 34 of the piston housing 17 is composed of a section having no teeth, and the rack gear 34 is pulled into the section having teeth. The rack gear 34 is not interfered with due to the section without triggering.

Accordingly, when the motor 15 is operated, the three gears 16a, 16b, and 16c rotate with each other so that the piston housing 17, which has been moved outward through the engagement with the rack gear 34, can be pulled backward. do.

The accumulator 11 is a means for operating the piston 19 by the force of the power spring 18 through the operation of pulling the trigger 33 to provide the pressure required for drug injection, piston housing 17, the power spring 18, piston 19, and the like.

The piston housing 17 is made of a hollow hollow and the rear side of the cylinder, and arranged side by side inside the body portion of the syringe body 14 is installed in a front and rear slideable structure.

The outer peripheral surface of the piston housing 17 is provided with a rack gear 34 formed side by side along the longitudinal direction of the housing, the rack gear 34 is meshed with the gear 16c of the gear assembly 16 at this time.

The power spring 18 is a means for instantaneously triggering the piston housing 17, while being located inside the piston housing 17, one side is inside the front end of the piston housing 17, and the other is the rear end side inside the body. It is installed in a structure that is supported on each.

At this time, according to the type of the power spring 18, for example, the force transmitted to the piston side is changed according to the spring elastic modulus, and the force at this time may vary according to the spring specifications.

The piston 19 is a means for injecting the drug by substantially pressurizing, and is formed in the form of being connected concentrically parallel to the outside of the front end of the piston housing 17 by using a rod 37, that is, the front of the piston housing 17 It is installed in the form of a long extension.

The piston 19 is located inside the piston adapter 22 to be described later to be able to pressurize and push the drug filled in front of it.

Further, a trigger 33 is provided as a means for controlling the forward and backward operation of the piston housing 17, wherein the trigger 33 is in a locking relationship with the piston housing 17 side and is pulled by the user. By releasing the piston housing 17 while being flipped, the spring-loaded piston housing 17 can be triggered momentarily.

Here, the piston housing 17, which is pulled backward, can be held in position by a normal safety device (usually a safety device used for the gun) that interlocks with the trigger, and at the same time as the pull of the trigger 33, the piston housing As the safety device holding 17 is released, the piston housing 17 can be triggered forward.

The launch unit 12 is a means for injecting the drug through the injection port 23 of the tip by using a piston operating force to store a predetermined amount of the drug supplied.

To this end, as shown in Figs. 2a to 2c, a cylindrical launcher block 21 having a drug chamber 20 for storing a certain amount of drug therein is provided, the launcher block 21 at this time ), The inlet adapter 24 at the front end of the block axis direction, the piston adapter 22 at the rear end of the block axis direction, the supply side adapter 26 at one side of the outer peripheral part of the block radial direction, and the other side of the outer peripheral part of the block radial direction will be described later. The bypass side adapters 28 are respectively mounted with screwing structures.

That is, the inlet adapter 24 and the piston adapter 22 are mounted at the front and the rear of the launch block 21, respectively, and the supply side adapter 26 and the bypass at the positions facing each other at the top and the bottom thereof. Side adapters 28 are mounted respectively.

At this time, each adapter has a structure in communication with the drug chamber 20 in the launcher block 21, the rear end of the piston adapter 22 is coupled to the syringe body 14, the supply side adapter 26 ) And the rear end of the bypass side adapter 28 are connected to the drug storage tank 35 and the bypass line 30, respectively.

Here, the inlet 23 of the inlet adapter 24 is about 0.1mm in diameter of the hole, through which the drug injected at high pressure can be injected into the skin.

In addition, the volume of the drug chamber 20 formed in the launch unit block 21 may be set in various ways, such as 1cc, 2cc, 3cc, 4cc, 5cc at the time of initial manufacture.

In addition, the inlet adapter 24 and the supply side adapter 26 are respectively provided with a check valve is to be able to control the one-way flow of the drug.

For example, an injection check valve 25 that is elastically supported by the valve spring 36b is mounted inside the inlet adapter 24, and the drug exiting the drug chamber 20 is again supplied with the drug chamber 20. It is possible to prevent the inflow to the inside, the supply side valve 26 for supplying elastically supported by the valve spring (36a) inside the supply side adapter 26 is mounted, the drug chamber (from the drug storage tank 35) 20, the drug can be supplied, but the backflow of the drug from the drug chamber 20 to the drug storage tank 35 side can be prevented.

Meanwhile, as shown in FIG. 1, the supply unit 13 is a means for supplying a drug into the drug chamber 20 in the launch unit block 21 of the launch unit 12, and stores the drug storing the drug. Tank 35.

At this time, the drug filled in the drug storage tank 35 is connected to the supply side adapter 26 side, the drug in the tank is passed through the check valve 27 for supply to the free drop by gravity of the drug chamber 20 It can be supplied internally.

In particular, the present invention provides a bypass device 32 as a means to enable metering of the drug.

As shown in FIG. 1, the bypass device 32 has a bypass-side adapter 28 having a bypass check valve 29 and a control valve 38 to store a certain amount of drug. Pass tank 31, and the bypass line 30 and the like connected between the bypass side adapter 28 and the bypass tank 31, and the like.

Here, the bypass tank 31 is connected to the drug storage tank 35 side through a line in which the valve 39 and the check valve 40 which are manually or automatically opened and closed are installed, and accordingly, the bypass tank ( The drug in 31 can be moved into the drug storage tank 35.

At this time, the bypass side adapter 28 is installed in a structure that is connected to the radially outer peripheral portion of the firing unit block 21 in the firing unit 12, the bypass line 30 extending from this bypass tank Connected to the (31) side, the drug exiting the bypass side adapter 38 can be sent to the bypass tank (31).

That is, the diameter of the nozzle part of the injection hole 23 in the launching part 12 is about 0.1 mm or less, and the end portion of the nozzle part is in direct contact with the skin of a cow or a pig. On the contrary, the bypass line 30 is returned to the bypass tank 31 by a predetermined amount because the diameter of the tube is relatively large and the resistance is smaller than that of the injection port.

For example, when 3cc is triggered, 1cc is first returned to the bypass tank 31, and the remaining 2cc is finally injected through the inlet 23.

The drug remaining after the drug dose is bypassed and can be recovered to the bypass tank 31.

In addition, a bypass check valve 29 which is elastically supported by the valve spring 36c is mounted inside the bypass-side adapter 28, and the drug exiting the drug chamber 20 is again supplied with the drug chamber ( 20 can be prevented from entering.

In particular, the control valve 38 is a means for adjusting the amount of drug to be bypassed, and is screwed to the bypass tank 31 is a part that serves to change the volume in the tank.

For example, if the volume in the bypass tank 31 is adjusted to 1cc by operating the control valve 38, the amount of drug returned to the bypass tank 31 is determined to be 1cc, and the control valve 38 By raising the volume up) and setting the volume in the bypass tank 31 to 2cc, the amount of drug returned at this time can be 2cc, so the amount of drug bypassed through the operation of the control valve 38, In other words, the amount of drug injected can be controlled.

Therefore, looking at the operating state of the bypass-type automatic needleless syringe is configured as follows.

Figure 3a and 3b is a schematic diagram showing the operating state of the bypass type automatic needleless syringe according to an embodiment of the present invention.

As shown in FIGS. 3A and 3B, in order to inject a drug into the skin of a livestock, first, a certain amount of drug is supplied from the drug storage tank 35, and the drug chamber is located in the launch unit block 21 of the launch unit 12. 20 will be filled.

Next, after touching the injection port 23 of the launching block 21 to the skin of the animal, when the user pulls the trigger 33 of the syringe body 14, the piston 19 including the piston housing 17 ) Is momentarily advanced by the expansion force of the power spring 18, the whole of which is compressed.

Next, the drug filled in the drug chamber 20 by the forward movement of the piston 19 is released by pushing the injection valve (25) in the front inlet adapter 24 by the piston pressure, and continues It can be injected into the skin through the injection port 23 in contact with the skin.

Then, some drugs exit the bypass line 30 by pushing the bypass check valve 29 in the bypass adapter 26 before the drug in the drug chamber 20 exits the inlet 23. The ride is recovered to the bypass tank 31.

The drug recovered in this way can enter the drug storage tank 35 again.

After drug injection, the piston 19 and the piston housing 17, which were moved forward, are again pulled back by the operation of the motor 15 and the gear assembly 16 to return to the state before the triggering, together with the power spring 18 ) Is also compressed.

As described above, in the present invention, in consideration of livestock of thick skin to livestock of thin skin, the force administered through the sieve of the power spring can be adjusted. It is possible to provide convenience that can be appropriately administered to the injection amount (vaccine amount) suitable for each use.

10: power unit 11: accumulator
12 launch unit 13 supply unit
14: syringe body 15: motor
16 gear assembly 17 piston housing
18: power spring 19: piston
20: Drug room 21: Launcher block
22: piston adapter 23: inlet
24: inlet adapter 25: injection valve
26: supply side adapter 27: supply check valve
28: Bypass adapter 29: Bypass check valve
30: bypass line 31: bypass tank
32: bypass device 33: trigger
34: rack gear 35: drug storage tank
36a, 36b, 36c: valve spring 37: rod
38: control lever 39: valve
40: check valve

Claims (5)

A means for returning a piston by using a motor and a gear combination, comprising a motor (15) installed inside the handle portion of the syringe body (14) and a plurality of gears arranged in engagement with each other. The power unit 10 is configured to include a gear assembly (16) which is electrically connected to the shaft of the motor (15) while the other gear is electrically connected to the accumulator (11) side;
A means for actuating the piston using a trigger pull operation and spring force to provide pressure for drug injection, the piston housing 17 being slid side-by-side and arranged side by side inside the body portion of the syringe body 14 and the piston housing A trigger 33 for intermittent movement of the 17, a power spring 18 for elastically pushing the piston housing 17 while being supported at both ends inside the front end of the piston housing 17 and the rear end of the body; An accumulator 11 configured to include a piston 19 mounted concentrically on the outer end of the piston housing 17 to pressurize the drug;
As a means for injecting the drug through the inlet of the tip by the piston operating force to receive the drug, a launcher block 21 having a drug chamber 20 for storing the drug to be injected therein, and the launcher block 21 A piston adapter 22 connected to the axial rear end of the syringe body 14 and guiding the movement of the piston 19, and connected to the axial front end of the launcher block 21; At the same time, the inlet adapter 24 for injecting drugs with the inlet 23 at the end and the inlet check valve 25 mounted inside the inlet adapter 24 and the radially outer peripheral portion of the firing block 21 A launch unit 12 connected to the supply side adapter 26 for supplying drugs and a supply check valve 27 mounted inside the supply side adapter 26;
A supply unit 13 supplying a drug into the launch unit 12;
Included, automatic needleless syringe, characterized in that made of a structure using the power of the spring as an energy source for drug injection.
delete delete delete The method according to claim 1,
Bypass side adapter 28 connected to the radially outer circumferential portion of the firing block 21 in the firing section 12 and bypass valve 29 mounted in the bypass side adapter 28. And a bypass tank 31 connected through a bypass line 30 extending from the bypass side adapter 28 to store a drug returned from the bypass side adapter 28. An automatic needleless syringe, characterized in that it further comprises a bypass device (32) for bypassing and recovering the drug remaining after the metering.

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