KR20220170679A - Cylinder for needleless injector - Google Patents

Abstract

A cylinder for a needleless syringe disclosed in the present invention comprises: a horizontal body which is a pipe where a nozzle is coupled to a front end, a rear end is coupled to the needleless syringe, and an injection solution chamber is formed thereinside, and has a piston reciprocating in the injection solution chamber; a vertical body which is formed above the horizontal body, has a first chamber on the upper side and a first flow path connecting the injection solution chamber and the first chamber at the lower side, and is coupled to an injection solution supply unit supplying an injection solution; and a first check valve which is coupled to the first chamber. The first check valve may be opened so that the injection solution is supplied from the injection solution supply unit to the injection solution chamber when the piston retracts. According to the cylinder for a needleless syringe of the present invention, the injection solution can be automatically supplied into the cylinder, so that the injection can be performed continuously.

Description

Cylinder for needleless injector

The present invention relates to a cylinder for a needle-free syringe, and more particularly, to a cylinder for a syringe capable of injecting an injection solution into the skin of a human or animal without using a needle.

Recently, as the number of cases where traces of injection due to foot-and-mouth disease vaccination remain in pork and are classified as 'abnormal meat' in the processing process is rapidly increasing, concerns about the safety of livestock products are also growing.

In the conventional vaccination, traces are left using a needle syringe, and in severe cases, side effects such as muscle damage at the vaccination site (suppuration, tissue lesions) occur, and foreign matter residues (needle) due to needle breakage during vaccination appear, causing little damage to farmers. did not

Most of the parts classified as 'ideal meat' are removed in the processing process, but if they are not found, they may cause discomfort to consumers.

Such 'ideal meat' can lead to consumer distrust of the quality of domestic meat.

Accordingly, farmers are attracting attention by introducing intradermal needle injections that can minimize the possibility of remaining injection marks.

Intradermal injection is an injection in which the vaccine is injected into the skin rather than into the muscle.

Intradermal injection is the administration of a drug into the dermis beneath the epidermis. Since many immune cells are distributed in the dermis, it can induce strong immunity even with a smaller amount than the injection solution used for intramuscular (subcutaneous) inoculation.

Republic of Korea Patent Registration No. 10-1966547 'veterinary syringe' is a combination of marking and injection of chemical solution by simply piercing a syringe needle into the skin of an animal, and a plurality of syringe needles are installed to continuously use a syringe needle. Disclosed is a syringe for animals, which can be used multiple times without replacing a syringe needle, since it is possible to inject a drug solution.

However, Korean Patent Registration No. 10-1966547 'injector for animals' has a problem in that it poses a risk of transmission of disease between animals because it is used without replacing the injection needle.

An object of the present invention is a cylinder capable of continuously performing intradermal injection by automatically injecting an injection solution without using a needle, and for a needle-free syringe capable of mounting an injection solution supply unit to automatically supply the injection solution into the cylinder. to provide cylinders.

The above object is a pipe having a nozzle unit coupled to a front end, a rear end coupled to a needle-free syringe, and an injection liquid chamber formed therein, and a transverse body in which a piston reciprocates in the injection liquid chamber; A vertical body formed above the transverse body, having a first chamber formed thereon, a first flow path connecting the injection chamber and the first chamber at the bottom, and coupled with an injection solution supply unit for supplying an injection solution; And a first check valve coupled to the first chamber, the first check valve can be achieved by a cylinder for a needle-free syringe that is opened so that the injection liquid is supplied from the injection liquid supply unit to the injection liquid chamber when the piston retracts.

In addition, the above object can be achieved by a cylinder for a needleless syringe having a front mounting portion coupled to a nozzle at the front end of the transverse body and a rear mounting portion coupled to the needleless syringe at the rear end.

In addition, for the above object, the front mounting portion is a cylinder for a needleless syringe in which a front flange is formed at the front end of the transverse body, a first mounting groove is formed on the front surface of the front flange, and a screw thread to which the nozzle nut is coupled is formed on the outer surface. can be achieved by

In addition, the above object, the rear mounting portion, the extension tube for reciprocating the shaft of the needle-free syringe to which the piston is coupled; and a rear flange formed at the rear end of the extension tube and fixed to the needle-free syringe to the cylinder nut, wherein the rear flange has an anti-rotation groove formed on the rear surface and a needle-free second mounting groove formed on the rear inner surface to which the O-ring is coupled. This can be achieved with a cylinder for a syringe.

In addition, for the above object, the vertical body is a needle-free syringe in which a third mounting groove into which the injection solution supply unit is inserted is formed on the inner surface of the upper end, and a screw thread to which a fixing nut for restraining the injection solution supply unit is coupled is formed on the outer surface of the upper end. can be achieved by means of a cylinder.

In addition, the above object, the injection solution supply unit, coupled to the upper portion of the cylinder support portion is formed with a second flow path therein; A spike coupled to an upper portion of the support and having a third flow path formed therein; A fixing portion coupled to the support and constraining the spike; And it can be achieved by a cylinder for a needle-free syringe including a protective cup coupled to the fixing part and wrapping around the vial into which the spike is inserted.

In addition, the above object, the nozzle unit, the second chamber is formed therein and the nozzle body in which the nozzle is formed at the front end; A second check valve coupled to the second chamber; a washer coupled to the inside of the rear end of the nozzle body and having a fourth passage connecting the first chamber and the second chamber; and a nozzle nut coupled to the front end of the transverse body and fixing the nozzle body to the front end of the transverse body, and the second check valve prevents external air from flowing into the injection liquid chamber through the fourth flow path when the piston retracts. This can be achieved by a cylinder for a needle-free syringe that closes the 4-way.

In addition, the above object, the needle-free syringe, a case provided with an operating button; A battery that is detachable from the case; A drive motor coupled to the inside of the case and operated by battery power; The front end is coupled to the piston and the rear end is coupled to the drive motor, and the pressure accumulator provides the pressure required for injection through the operation of the drive motor; a cylinder having a rear end coupled to the pressure accumulator; An injection solution supply unit coupled to an upper portion of the cylinder to supply an injection solution; A nozzle unit coupled to the front end of the cylinder; A controller coupled to the case and electrically connected to the driving motor and the battery to operate the driving motor; And it can be achieved by a cylinder for a needle-free syringe including a trigger coupled to the front end of the case and providing a firing signal to the controller when in contact with an object.

In addition, the above object, the controller can be achieved by a cylinder for a needle-free syringe in which the control unit moves the piston backward and then fixes it when the user presses the operation button, and the injection liquid is supplied to the injection liquid chamber when the piston moves backward.

In addition, for the above purpose, the control unit releases the fixation of the piston when the trigger device provides a firing signal, the piston rapidly advances to the injection chamber to pressurize the injection solution, and the injection solution is injected into the object through the micro hole of the nozzle unit. can be achieved by means of a cylinder.

According to the cylinder for a needle-free syringe according to the present invention, the injection solution can be automatically supplied into the cylinder, so that the injection can be performed continuously.

In addition, according to the cylinder for a needle-free syringe according to the present invention, since intradermal injection can be continuously performed by automatically injecting an injection solution without using a needle, it is possible to reduce the lesion caused by the needle injection and reduce the economic loss of the farmhouse. can

In addition, according to the cylinder for a needle-free syringe according to the present invention, the danger caused by the use of an injection needle can be prevented.

In addition, according to the cylinder for a needle-free syringe according to the present invention, transmission of disease between animals due to reuse of an injection needle can be prevented.

In addition, according to the cylinder for a needle-free syringe according to the present invention, an injection solution can be continuously injected into an animal.

In addition, according to the cylinder for a needle-free syringe according to the present invention, it is possible to improve work efficiency by semi-automating inoculation of animals.

In addition, since the cylinder for a needle-free syringe according to the present invention can reduce the stress received by animals due to inoculation, increased production and improved meat quality can be expected.

In addition, according to the cylinder for a needle-free syringe according to the present invention, it is possible to easily inoculate moving animals by securing many contact surfaces on the skin of an animal that comes into contact with the needle-free syringe.

In addition, according to the cylinder for a needle-free syringe according to the present invention, inoculation can be performed by recognizing whether the needle-free syringe is well grounded on the animal's skin without visually checking.

In addition, according to the cylinder for a needle-free syringe according to the present invention, an inoculation method such as intradermal injection, subcutaneous injection, or intramuscular injection can be selected by adjusting the pressure for injecting the injection solution.

1 is a perspective view of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention.
2 is an exploded perspective view of a front portion of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention.
3 is a side view of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention.
4 is a side view of an open case of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention.
5 is a side view of the inside of a front case of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention.
6 is a side view and a partially enlarged view of a pressure accumulator of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention.
7 is a side view and a partially enlarged view showing that the main spring is compressed as the moving frame moves backward in the pressure accumulator of the needle-free syringe equipped with the cylinder for the needle-free syringe according to the present invention.
8 is a side view and a partially enlarged view showing that the moving frame is returned to the original position after the main spring of the pressure accumulator of the needle-free syringe equipped with the cylinder for the needle-free syringe according to the present invention is compressed.
9 is an exploded perspective view of a front part in which a piston of a pressure accumulator of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention is disassembled.
10 is a cross-sectional view of a cylinder of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention.
11 is a rear perspective view of a cylinder of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention.
12 is an exploded perspective view showing a check valve disassembled from a cylinder of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention.
13 is an exploded perspective view of a check valve of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention.
14 is a cross-sectional view of a check valve of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention.
15 is a cross-sectional view of a support portion of an injection solution supply unit of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention.
16 is an exploded cross-sectional view of a nozzle part of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention.
17 is an exploded perspective view of an injection solution supply unit of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention.
18 is a perspective view of a trigger guide of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention.
19 is a perspective view of a trigger nut of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention.
20 is an exploded perspective view of a trigger nut of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention.
21 is a cross-sectional view and a partially enlarged view of a nozzle part, a cylinder, and an injection solution supply part of a needle-free syringe equipped with a cylinder for a needle-free syringe according to the present invention.
FIG. 22 illustrates a case in which the piston moves backward in FIG. 21 .
FIG. 23 illustrates a case in which the piston advances in FIG. 21 .

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

However, in describing the present invention, descriptions of already known functions or configurations will be omitted to clarify the gist of the present invention.

The X, Y, and Z axes shown in the drawing are arbitrarily determined for convenience of description, not for limitation of rights. , and the Z-axis is defined as pointing up and down.

Each direction described below is based on this, except for cases specifically limited otherwise.

Top (top), bottom (bottom), left and right (side or side), front (front, front), back (back, back), etc., which refer to directions in the description and claims of the invention, etc., are not intended to limit the use of rights. For convenience of description, the relative position between the drawings and configurations is determined as a standard, and each direction described below is based on this, except when specifically limited otherwise.

Referring to Figures 10 to 11,

The cylinder for a needle-free syringe according to a preferred embodiment of the present invention,

A pipe in which the nozzle unit 700 is coupled to the front end, the rear end is coupled to the needle-free syringe 10, and the injection chamber 511 is formed therein, and the piston 460 reciprocates in the injection chamber 511. (510);

It is formed above the transverse body 510, the first chamber 531 is formed at the top, and the first flow path 532 connecting the injection liquid chamber 511 and the first chamber 531 is formed at the bottom, and the injection liquid ( 30) a vertical body 530 to which the injection liquid supply unit 600 for supplying is coupled; and

It includes a first check valve 540 coupled to the first chamber 531,

The first check valve 540 is opened so that the injection liquid 30 is supplied from the injection liquid supply unit 600 to the injection liquid chamber 511 when the piston 460 retreats.

Referring to Figures 1 to 3,

The needle-free syringe 10,

A case 100 provided with an operating button 112;

a battery 200 detached from the case 100;

a drive motor 300 coupled to the inside of the case 100 and operated by power of the battery 200;

The front end is coupled to the piston 460 and the rear end is coupled to the drive motor 300, and the pressure accumulator 400 provides the pressure necessary for injection of the injection liquid 30 through the operation of the drive motor 300;

A cylinder 500 having a rear end coupled to the pressure accumulator 400, having an injection chamber 511 capable of storing the injection fluid 30 therein, and having the piston 460 reciprocating in the injection chamber 511;

An injection solution supply unit 600 coupled to an upper portion of the cylinder 500 to supply an injection solution 30;

a nozzle unit 700 coupled to the front end of the cylinder 500;

a control unit 800 coupled to the case 100 and electrically connected to the driving motor 300 and the battery 200 to operate the driving motor 300; and

A triggering device 900 coupled to the front end of the case 100 and providing a firing signal to the control unit 800 when in contact with an object is included.

4 and 5 , the case 100 provides a space in which the battery 200, the drive motor 300, the pressure accumulator 400, and the control unit 800 are installed.

A handle 111 may be formed at a lower end of the case 100, and an operation button 112 electrically connected to the control unit 800 may be provided on the handle 111.

The operation button 112 is a switch that can supply or cut off power from the battery 200 to the control unit 800 .

An insertion hole 116 may be formed at the lower end of the handle 111 to mount the removable battery 200, and a silicon pad 117 may be coupled to prevent slipping.

The case 100,

A front case in which a pressure accumulator 400 is disposed inside, a front installation hole 113 through which the pressure accumulator 400 protrudes is formed at the front end, and a handle 111 having an operation button 112 provided therein is formed. (110); and

It may include a rear case 120 coupled to the rear end of the front case 110 in which the drive motor 300 coupled to the pressure accumulator 400 is disposed.

The case 100 may be separated into a front case 110 and a rear case 120 .

The front case 110 and the rear case 120 may be separated left and right, respectively.

The front case 110 provides a space where the pressure accumulator 400 is disposed, and the rear case 120 provides a space where the driving motor 300 is disposed.

The front installation hole 113 is a hole formed at the front end of the front case 110, and the front end of the pressure accumulator 400 disposed inside the front case 110 can be exposed to the outside of the front case 110. provides space for

The front case 110 may have a front installation groove 115 into which the rear end of the percussion device 900 is inserted.

The front installation groove 115 may be formed with a clearance groove 114 to which the percussion device 900 can be coupled.

The front case 110 may have a pin hole 118 to which the sensor pin 920 of the triggering device 900 may be coupled.

The rear case 120 may be formed with a strap holder 121 capable of coupling a handle 111 strap or a shoulder strap.

The battery 200 provides power to operate the driving motor 300 .

Power supplied from the battery 200 to the driving motor 300 is determined by the controller 800 .

The battery 200 may be separated from the handle 111 of the case 100, charged, and then mounted on the handle 111 again.

The battery 200 may be charged while integrally built in the case 100 .

The drive motor 300 operates with power supplied from the battery 200 through the control unit 800 .

The drive motor 300 provides power to drive the pressure accumulator 400 .

The driving motor 300 may include a reduction gear and operates according to a signal from the control unit 800 .

Referring to FIGS. 6 to 9 , the pressure accumulator 400 may change the pressure of the injection liquid chamber 511 inside the cylinder 500 .

The pressure accumulator 400 may reciprocate the piston 460 located in the injection chamber 511 inside the cylinder 500 to change the pressure in the injection chamber 511 .

The pressure storage unit 400 may change the pressure of the injection liquid chamber 511 so that the injection liquid 30 is supplied from the injection liquid supply unit 600 to the injection liquid chamber 511 inside the cylinder 500.

The pressure accumulator 400 may inject the injection liquid 30 stored in the injection chamber 511 out of the cylinder 500 by changing the pressure in the injection chamber.

The pressure accumulator 400 operates with power provided from the drive motor 300 .

The pressure storage unit 400,

A fixed frame 410 coupled to the driving motor 300 and providing a front space and a rear space;

A movable frame 420 coupled to the fixed frame 410 and simultaneously linearly moving in the front space and the rear space;

a ball screw 430 coupled to the moving frame 420 located in the rear space and operated by the driving motor 300;

A locking device 440 coupled to the fixing frame 410 in the front space;

A shaft 450 coupled to the fixing frame 410 and capable of linear motion and fixed by the locking device 440;

A piston 460 coupled to the front end of the shaft 450;

a support disk 470 coupled to the rear end of the shaft 450 in the front space;

A main spring 480 disposed between the fixing device and the support disk 470 in the front space may be included.

The fixed frame 410,

a rear fixed disk 413 coupled to the drive motor 300;

an intermediate fixed disk 412 spaced apart from the rear fixed disk 413 to form the rear space;

a front fixed disk 411 spaced apart from the intermediate fixed disk 412 to form the front space;

a plurality of rear supports 414 coupled between the rear fixed disk 413 and the intermediate fixed disk 412; and

A plurality of front supports 415 coupled between the intermediate fixed disk 412 and the front fixed disk 411 may be included.

The fixed frame 410 may guide the linear motion of the moving frame 420 and the shaft 450 .

The front space is formed between the front fixed disk 411 and the intermediate fixed disk 412, and the rear space is formed between the intermediate fixed disk 412 and the rear fixed disk 413.

The front support 415 supports the front space, and the rear support 414 supports the rear space.

The front fixed disk 411 may have a front extension part 416 formed at the front and a rear extension part 417 formed at the rear.

The front extension part 416 is a pipe through which the shaft 450 passes, and a screw thread is formed on the outer surface of the front end and exposed to the outside of the case 100 through the front installation hole 113.

The rear extension part 417 is a pipe through which the shaft 450 passes, and a locking device 440 may be coupled to the outside.

The moving frame 420,

A rear moving disk 422 coupled to the moving nut 432 of the ball screw 430 and linearly moving along the rear support 414;

A front moving disk 421 that moves linearly along the front support 415; and

A plurality of movable supports 423 coupled between the rear movable disk 422 and the forward movable disk 421 through the middle fixed disk 412 may be included.

The movable frame 420 is coupled to the fixed frame 410 and moves along the front support 415 and the rear support 414 .

The moving frame 420 may move forward or backward around the intermediate fixed disk 412 .

The moving frame 420 is coupled to the ball screw 430 operated by the driving motor 300 and can move linearly.

When the moving frame 420 moves backward, the support disk 470 moves backward together.

The ball screw 430 is a device used when converting rotational motion into linear motion.

The ball screw 430 includes a screw shaft 431 coupled to the driving motor 300 and a moving nut 432 moving along the screw shaft 431 .

The front end of the screw shaft 431 is coupled to the intermediate fixing disk 412 and the rear end is coupled to the driving motor 300 and the coupling 310 .

The movable nut 432 is coupled with the rear movable disk 422 to linearly move the movable frame 420 .

The locking device 440 is a device capable of restricting the movement of the shaft 450 using the ball 442 .

The locking device 440 may be coupled to the rear extension part 417 .

The locking device 440 inserts a ball 442 into a locking groove 452 formed in the shaft 450 at a position where the support disk 470 moves backward and compresses the main spring 480 to lock the shaft 450. can be locked

When the moving frame 420 moves forward and pushes the locking device 440, the shaft 450 is unlocked.

When the shaft 450 is unlocked, the ball 442 inserted into the locking groove 452 comes out of the locking groove 452, so the shaft 450 is quickly moved by the restoring force of the compressed main spring 480. going forward

The locking device 440,

A ball guide 441 coupled to the inside of the cylindrical housing formed in the fixed frame 410 and capable of linear motion by inserting the shaft 450 and having a plurality of locking holes 446 formed therein;

a locking spring 448 disposed between the housing and the ball guide 441;

A plurality of balls 442 disposed in the locking hole 446;

A rocker 443 disposed between the housing and the ball guide 441 and capable of moving by the elastic force of the locking spring 448 to insert the ball 442 into the locking groove 452 formed in the shaft 450; and

An unlocker 444 disposed outside the housing and coupled to the rocker 443 through a guide hole 447 formed in the housing to move the rocker 443 may be included.

The housing may be a front extension part 416 and/or a rear extension part 417 formed on the front fixed disk 411 .

The housing has a rocker 443 inside, a ball guide 441 inside the rocker 443, and a shaft 450 inside the ball guide 441.

An unlocker 444 is located outside the housing.

The housing is formed with guide holes 447 in the forward and backward directions.

The guide hole 447 provides a space in which the locker 443 and the unlocker 444 can move integrally.

The ball guide 441 has a cylindrical shape through which the shaft 450 passes and is fixed inside the housing.

The ball guide 441 may be fixed to the housing by a fixing washer 449.

The fixing washer 449 may be coupled to the housing while contacting the front end and/or the rear end of the ball guide 441 .

The ball guide 441 is formed with a plurality of locking holes 446 so that the ball 442 can be inserted into the locking groove 452 of the shaft 450 .

When the shaft 450 moves backward and the locking hole 446 is connected to the locking groove 452, the ball 442 can move to the locking groove 452.

The locking spring 448 provides an elastic force for moving the rocker 443 backward.

The locking spring 448 is disposed to surround the outside of the ball guide 441 .

The locking spring 448 has a front end supported by a support jaw or a fixed washer 449 formed inside the housing and a rear end supported by a rocker 443 .

The ball 442 may be inserted into the locking groove 452 of the shaft 450 to limit the movement of the shaft 450 .

The ball 442 is inserted into the locking groove 452 of the shaft 450 when the rocker 443 moves backward.

The ball 442 comes out of the locking groove 452 of the shaft 450 when the unlocker 444 moves forward.

The rocker 443 has a cylindrical shape fitted to the ball guide 441 and can move linearly along the ball guide 441 .

The rocker 443 can insert the ball 442 into the locking groove 452 of the shaft 450 by the elastic force of the spring 448 .

The locker 443 and the unlocker 444 are connected by a fixing bolt 445 and can move integrally.

The fixing bolt 445 passes through a guide hole 447 formed in the housing and couples the locker 443 and the unlocker 444.

The outer surface of the rocker 443 may have a groove to which a fixing bolt 445 is coupled.

The rocker 443 may protrude inward to form a sliding portion contacting the ball guide 441 .

The front end surface of the slide part supports the locking spring 448 and the rear end surface may be inclined to press the ball 442 when the rocker 443 moves backward.

When the shaft 450 moves backward and the locking hole 446 is connected to the locking groove 452, the rocker 443 moves backward by the elastic force of the locking spring 448 and the ball 442 is moved into the locking groove 452. can be inserted.

When the ball 442 is inserted into the locking groove 452, the shaft 450 is locked.

The unlocker 444 has a cylindrical shape fitted into the housing and can move linearly along the housing.

The unlocker 444 may have a hole through which the fixing bolt 445 passes.

The fixing bolt 445 may be screwed into the locker 443 and/or the unlocker 444 .

The unlocker 444 may advance the backward rocker 443 by the elastic force of the locking spring 448 .

When the unlocker 444 moves forward by the moving frame 420, the locker 443 moves together.

When the rocker 443 moves forward by the unlocker 444, the ball 442 inserted into the locking groove 452 of the shaft 450 is separated from the locking groove 452.

When the ball 442 is separated from the locking groove 452, the locked state of the shaft 450 is released.

The shaft 450 moves forward rapidly by the elastic force of the compressed main spring 480 .

The shaft 450 is for linear motion of the piston 460 .

The shaft 450 has a piston 460 coupled to the front end and a support disk 470 coupled to the rear end.

The shaft 450 may be formed with a locking groove so that it can be locked by the ball of the locking device 440 .

The shaft 450 may be formed with an insertion groove 451 into which the rear end of the piston 460 is coupled.

The piston 460 moves linearly in the injection chamber 511 of the cylinder 500.

The piston 460 may be formed with a sealing jaw 462 to be in close contact with the injection liquid chamber 511 .

An annular groove 463 may be formed in the piston 460 so that an O-ring 464 may be coupled to the injection liquid chamber 511 .

The sealing jaw 462 and the O-ring may prevent the injection liquid 30 from leaking out.

An insertion screw 461 may be formed at the rear end of the piston 460, and the insertion screw 461 is screwed into the insertion groove 451.

The support disk 470 supports the main spring 480 together with the intermediate fixing disk 412 .

When the forward movement disk 421 moves backward, the support disk 470 moves backward and compresses the main spring 480 .

The support disk 470 does not advance together when the forward movement disk 421 moves forward.

The main spring 480 provides energy for the injection liquid 30 to be injected at high pressure.

The main spring 480 is disposed between the support disk 470 and the intermediate fixing disk 412 .

The pressure storage unit 400,

When the moving frame 420 moves backward, the main spring 480 is compressed while the support disk 470 moves backward together.

With the main spring 480 compressed, the shaft 450 is fixed by the locking device 440,

The moving frame 420 can return to its original position.

When the support disk 470 moves backward, the shaft 450 and the piston 460 also move backward, and at this time, the injection liquid 30 is injected into the injection liquid chamber 511 .

Referring to Figures 10 to 12,

The cylinder 500,

A pipe in which the nozzle unit 700 is coupled to the front end, the rear end is coupled to the needle-free syringe 10, and the injection chamber 511 is formed therein, and the piston 460 reciprocates in the injection chamber 511. (510);

It is formed above the transverse body 510, the first chamber 531 is formed at the top, and the first flow path 532 connecting the injection liquid chamber 511 and the first chamber 531 is formed at the bottom, and the injection liquid ( 30) a vertical body 530 to which the injection liquid supply unit 600 for supplying is coupled; and

It includes a first check valve 540 coupled to the first chamber 531,

The first check valve 540 is opened so that the injection liquid 30 is supplied from the injection liquid supply unit 600 to the injection liquid chamber 511 when the piston 460 retreats.

The transverse body 510,

A front mounting portion 512 to which the nozzle unit 700 is coupled is formed at the front end,

A rear mounting portion 516 to which the needle-free syringe 10 is coupled is formed at the rear end.

The transverse body 510 is a pipe in a horizontal direction, and an injection liquid chamber 511 in which the injection liquid 30 is stored is formed therein.

The transverse body 510 has a front mounting portion 512 formed at the front end and a rear mounting portion 516 formed at the rear end.

The horizontal body 510 has a nozzle unit 700 coupled to the front end and a pressure storage unit 400 coupled to the rear end.

The front mounting portion 512 has a front flange 513 formed at the front end of the horizontal body 510,

The front flange 513 has a first mounting groove 514 formed on the front surface and a screw thread 515 to which the nozzle nut 750 is coupled is formed on the outer surface.

The front flange 513 is formed by extending outward from the front end of the transverse body 510 .

The first mounting groove 514 is a portion where the nozzle body 710 and the washer 720 are seated, and the nozzle body 710 and the washer 720 are a nozzle nut 750 coupled to the screw thread 515 bound by

The rear mounting portion 516 includes an extension tube 517 through which the shaft 450 of the needle-free syringe 10 to which the piston 460 is coupled reciprocates; And a rear flange 518 formed at the rear end of the extension tube 517 and fixed to the needle-free syringe 10 by a cylinder nut 560,

The rear flange 518 has an anti-rotation groove 519 formed on its rear surface and a second mounting groove 520 to which an O-ring 522 is coupled is formed on its rear inner surface.

The expansion pipe 517 provides a space for the shaft 450 to move.

The rear flange 518 is formed by extending outward from the rear end of the transverse body 510 .

The rear flange 518 is constrained to the front extension part 416 formed in the fixing frame 410 of the pressure accumulator 400 by a cylinder nut 560.

A fifth mounting groove 521 may be formed around the rear end of the rear flange 518 .

The fifth mounting groove 521 allows the rear end of the rear flange 518 to be inserted into the front extension part 416 .

An anti-rotation groove 519 may be formed around the rear end of the rear flange 518 .

The anti-rotation groove 519 prevents the cylinder 500 from rotating while the rear end of the rear flange 518 is inserted into the front extension 416.

The front extension part 416 has an anti-rotation bump 418 engaged with the anti-rotation groove 519 on the inside of the front end, and a screw thread 419 to which the cylinder nut 560 is coupled is formed on the outside of the front end. .

The vertical body 530,

A third mounting groove 533 into which the injection liquid supply unit 600 is inserted is formed on the inner surface of the upper end,

A screw thread 534 to which a fixing nut 616 for restraining the injection liquid supply unit 600 is coupled is formed on the outer surface of the upper portion.

The vertical body 530 is a pipe in the vertical direction, and a first flow path 532 connected to the injection chamber 511 is formed at the bottom, and a first chamber 531 connected to the first flow path 532 is formed. formed at the top.

The vertical body 530 may have a fourth mounting groove 535 for installing the first check valve 540 on the bottom 542 of the first chamber 531 .

The third mounting groove 533 is formed by extending the upper end of the first chamber 531 outward.

The insertion bundle 612 at the bottom of the injection solution supply unit 600 inserted into the third mounting groove 533 is restrained by a fixing nut 616.

Referring to Figures 15 and 17,

The injection solution supply unit 600,

a support portion 610 coupled to an upper portion of the cylinder 500 and having a second flow path 624 formed therein;

a spike 630 coupled to an upper portion of the support part 610 and having a third flow path 632 formed therein;

A fixing part 640 coupled to the support part 610 and restraining the spike 630; and

A protective cup 650 coupled to the fixing part 640 and wrapped around the vial 20 into which the spike 630 is inserted is included.

The support part 610,

An insertion bundle 612 inserted into the third mounting groove 533 of the cylinder 500;

a first support pipe 611 extending upward from the insertion bundle 612;

a second support pipe 617 bent at a predetermined angle from the first support pipe 611 and extending upward; and

A pedestal 618 coupled to the second support tube 617 and supporting the spike 630 is included.

The insertion bundle 612 is for stably coupling the support part 610 to the cylinder 500, and an annular groove 613 is formed on the outside to which an O-ring 615 can be coupled.

Since the second support pipe 617 is formed inclined at a predetermined angle from the first support pipe 611, the pedestal 618 coupled to the second support pipe 617 is also inclined at a predetermined angle.

The internal passage leading to the first support pipe 611 and the second support pipe 617 forms a third flow path 632 .

The second support tube 617 on the pedestal 618 forms a fitting part 620 inserted into the lower end of the spike 630.

An annular groove 621 is formed in the fitting portion 620 to which an O-ring 622 may be coupled.

The fitting part 620 may be coupled with a support ring 623 in contact with the lower end of the spike 630.

The support ring 623 is an O-ring that seals the bottom of the spike 630.

The pedestal 618 supports the spike 630, and a screw thread 619 to which the fixing part 640 is coupled is formed on the side.

The spike 630 supplies the injection liquid 30 to the second flow path 624 through the third flow path 632 formed in the introduction needle 631 inserted into the vial 20 .

The spike 630 may be constrained on the pedestal 618 by the fixing part 640 .

In the fixing part 640, the lower first fixing body 641 is coupled to the pedestal 618 to fix the spike 630, and the through hole 643 formed in the center of the first fixing body 641 is used. Through this, the introduction needle 631 of the spike 630 is exposed upward.

The ball plunger 645 may be coupled to the second fixing body 642 at the top of the fixing part 640 .

The ball plunger 645 may press and fix the stopper of the vial 20 inserted into the spike 630 .

A folding groove 644 to which the protective cup 650 is coupled may be formed on an outer surface of the second fixture 642 .

The lower portion of the protective cup 650 may be opened, and a fitting protrusion 651 coupled to the bending groove 644 may be formed inside the lower portion.

The protective cup 650 is for protecting the circumference of the vial 20 and may have an incision through which the vial 20 can be observed.

Referring to Figures 12 and 16,

The nozzle part 700,

a nozzle body 710 having a second chamber 711 formed therein and a spray hole 712 formed at the front end;

a second check valve 730 coupled to the second chamber 711;

a washer 720 coupled to the inside of the rear end of the nozzle body 710 and formed with a fourth passage 721 connecting the first chamber 531 and the second chamber 711; and

It includes a nozzle nut 750 coupled to the front end of the transverse body 510 and fixing the nozzle body 710 to the front end of the transverse body 510,

The second check valve 730 closes the fourth flow path 721 so that external air does not flow into the injection liquid chamber 511 through the fourth flow path 721 when the piston 460 retracts.

The second check valve 730 is installed in the second chamber 711 inside the nozzle body 710 and a washer 720 is coupled to the inside of the rear end.

The nozzle body 710 has an extension 713 formed outside the rear end, and the extension 713 comes into contact with a bent part 751 formed inward from the front end of the nozzle nut 750 .

The nozzle body 710 may have a first expansion groove 714 in which the washer 720 can be seated inside the expansion part 713 .

The nozzle body 710 may have a second expansion groove 715 to which an O-ring 723 is mounted at a rear end of the first expansion groove 714 .

The second check valve 730 opens and closes the fourth passage 721 of the washer 720 coupled to the rear end of the nozzle body 710 .

The second check valve 730 opens the fourth flow path 721 so that the injection liquid 30 is supplied from the injection liquid supply unit 600 to the second chamber 711 when the piston 460 advances.

The second check valve 730 closes the fourth flow path 721 when the piston 460 moves backward, so that the external air introduced through the injection port 712 passes through the fourth flow path 721 to the injection liquid chamber 511. ) can be prevented.

The washer 720 is coupled to the rear end of the nozzle body 710 to close the second chamber 711, but connects the second chamber 711 and the injection liquid chamber 511 through the fourth passage 721.

The washer 720 may open and close the fourth flow passage 721 by the second check valve 730 in contact with the front surface.

The washer 720 is seated in the first expansion groove 714, and an annular groove 722 is formed around the rear end to which an O-ring 723 can be coupled.

The O-ring 723 is in close contact with the second expansion groove 715 and the annular groove 722 .

The nozzle nut 750 is coupled to a screw thread 515 formed on the horizontal body 510 of the cylinder 500.

The nozzle nut 750 may have a bent portion 751 formed on the inside of the front end portion to restrict the extension portion 713 of the nozzle body 710.

Referring to Figures 21 to 23,

The controller 800 controls power supplied from the battery 200 to the drive motor 300 .

The control unit 800 may include a control circuit, a display connected to the control circuit to display a state, and a button capable of inputting a command to the control circuit.

The controller 800 moves the piston 460 backward when the user presses the operation button 112 and fixes it, and the cylinder 500 releases the injection liquid 30 into the injection chamber 511 when the piston 460 moves backward. is supplied

When the piston 460 moves backward, the pressure in the injection liquid chamber 511 decreases, so that the first check valve 540 opens and the injection liquid 30 is supplied to the injection liquid chamber 511 .

The control unit 800 releases the fixation of the piston 460 when the triggering device 900 provides a firing signal, and the piston 460 rapidly advances to the injection liquid chamber 511 to release the injection liquid 30. is pressurized, and the injection liquid 30 is injected into the object through the nozzle unit 700.

When the piston 460 advances, the pressure in the injection liquid chamber 511 increases, so that the second check valve 730 opens and the injection liquid 30 is injected through the nozzle unit 700 .

Referring to Figure 18,

The triggering device 900,

A trigger guide 910 that retreats when in contact with an object;

A percussion nut 940 having a front end coupled to the percussion guide 910 and a rear end coupled to the case 100 of the needleless syringe with a gap;

a trigger spring 960 disposed between the trigger nut 940 and the case 100;

a sensor pin 920 coupled to the case 100 so that the front end is coupled to the percussion guide 910 and retracts together when the percussion guide 910 retracts; and

A trigger sensor 930 coupled to the case 100 and providing a firing signal to the control unit 800 of the needle-free syringe when retraction of the sensor pin 920 is detected is included.

The percussion guide 910,

A cylindrical guide body 911 surrounding the cylinder 500 to which the nozzle of the needle-free syringe is coupled;

a contact portion 912 formed at a front end of the guide body 911 and formed with an entrance 914 so that the nozzle is exposed when the guide body 911 retreats; and

A connection part 917 formed at the lower end of the guide body 911 and coupled to the front end of the sensor pin 920 is included.

The percussion guide 910 protects the nozzle from being exposed to the outside and retracts when it touches the skin of an animal, thereby exposing the nozzle to the outside.

A trigger nut 940 is coupled to the rear end of the trigger guide 910, and the trigger nut 940 is coupled to the case 100.

The guide body 911 may have a cutout groove 915 formed thereon so that the cylinder 500 can be exposed upward.

The incision groove 915 is a portion where the vertical body 530 of the cylinder 500 coupled to the injection solution supply unit 600 is exposed to the outside of the guide body 911.

The incision groove 915 is formed forward from the top of the rear end of the guide body 911, and provides a space in which the vertical body 530 of the cylinder 500 can move in the guide body 911.

The guide body 911 may be formed with a plurality of observation holes 916 so that the cylinder 500 located therein can be seen.

The observation hole 916 provides a space to check the cylinder 500 surrounded by the guide body 911 .

The guide body 911 may be formed with one or more locking protrusions 919 that limit the length to which the trigger nut 940 is coupled.

The guide body 911 has a thread 918 to which a trigger nut 940 is coupled is formed outside the rear end.

The locking protrusion 919 is a stopper that limits the length at which the trigger nut 940 coupled to the screw thread 918 is fastened to the guide body 911 .

It is preferable that the locking protrusion 919 is formed separately on the left and right sides.

The contact portion 912 is a portion that comes into contact with the animal's skin, and has an entrance 914 through which a nozzle can come in and out at the center.

In the percussion guide 910, a plurality of contact grooves 913 may be formed at corners where the guide body 911 and the contact portion 912 meet.

When the contact part 912 contacts the skin of an animal, a part of the skin of the contact groove 913 is inserted into the contact groove 913 to secure a wide contact area.

The contact groove 913 may prevent movement of a position where the contact portion 912 contacts the animal's skin.

The connection part 917 is formed at the lower end of the guide body 911 to connect the guide body 911 and the sensor pin 920.

The connection part 917 may be coupled to the sensor pin 920 using bolts and nuts.

The connection part 917 may be formed as a pair so as to be coupled at both sides around the sensor pin 920 .

Referring to Figures 19 to 20,

The trigger nut 940,

A front nut 941 having a front nut 941 flange formed at the front end and a screw thread 943 formed on the inner surface; and a rear nut 944 having a rear nut flange 945 formed at the rear end and a screw thread 950 coupled to the screw thread 943 of the front nut 941 formed on an outer surface thereof.

The front nut 941 is coupled to a screw thread 918 formed in the guide body 911 of the percussion guide 910 that provides a firing signal to the control unit 800 when it contacts an object.

The front nut 941 connects the guide body 911 and the rear nut 944.

The rear nut 944 is coupled with the front nut 941 and is inserted into the front installation groove 115 of the case 100 .

The rear nut 944 is formed with a plurality of protrusions 946 protruding outward from the outer surface of the rear nut flange 945 .

In the case 100, the protrusion 946 is coupled to the front installation groove 115 to form a clearance groove 114 capable of moving forward and backward.

The locking protrusion 946 of the rear nut 944 is inserted into the clearance groove 114 and can move forward and backward.

The rear nut 944 is formed with a step 947 protruding on the inner surface.

The step 947 supports the trigger spring 960 disposed between the rear nut 944 and the case 100 .

The rear nut 944 may have a fitting groove 948 inserted into the rear end of the percussion guide 910 at the front end.

An insertion protrusion 949 inserted into the cutout groove 915 of the guide body 911 may be formed at the front end of the rear nut 944 .

The order in which the percussion guide 910 and the percussion nut 940 are coupled is as follows.

① Combine the front nut 941 with the rear nut 944.

② Insert the insertion protrusion 949 of the rear nut 944 into the cutout groove 915 of the percussion guide 910.

③ Adhere the rear end of the trigger guide 910 to the fitting groove 948 of the rear nut 944.

④ Fasten the front nut 941 to the screw thread 918 of the percussion guide 910 up to the locking jaw 919.

The trigger spring 960 is disposed between the step 947 of the rear nut 944 and the case 100 .

The percussion spring 960 provides elastic force so that the percussion guide 910 can return to its original position after retracting.

The sensor pin 920 enables the percussion sensor 930 to detect retraction of the percussion guide 910.

The sensor pin 920 may be formed with a front stopper 922 and a rear stopper 923 .

The front stopper 922 and the rear stopper 923 limit the movement range of the sensor pin 920 coupled to the case 100 .

The sensor pin 920 is coupled to the pin hole 118 of the case 100 .

The sensor pin 920 has a front stopper 922 located outside the case 100 and a rear stopper 923 located inside the case 100 .

The percussion sensor 930 detects the rear end of the sensor pin 920 retracted together with the percussion guide 910 .

Referring to Figures 12 to 14,

The first check valve 540,

It includes a bottom 542 where a through hole 543 through which the injection liquid 30 passes is formed and an upper edge 544 extending upward along the circumference of the bottom 542 and disposed at the outlet of the injection liquid 30 a first body 541;

A plurality of concentric concavities and convexities (547) with diameters extending on the upper surface are formed to form a sheet (546) for opening and closing the inlet of the injection solution (30) and a lower edge (548) extending downward along the circumference of the sheet (546). a second body 545 including and disposed above the first body 541; and

A check spring 550 disposed between the bottom 542 of the first body 541 and the seat 546 of the second body 545 is included.

The first body 541 is disposed at the outlet through which the injection liquid 30 is discharged and supports the lower end of the check spring 550 .

The outlet is formed on the lower surface of the first chamber 531 of the cylinder 500.

The first body 541 may be disposed in the fourth mounting groove 535 of the cylinder 500 .

The fourth mounting groove 535 allows the first body 541 to maintain a constant position.

The first body 541 includes a bottom 542 supporting the lower end of the check spring 550 and an upper edge 544 preventing the check spring 550 from being separated.

In the first body 541, a plurality of through holes 543 may be further formed at corners where the bottom 542 and the upper edge 544 meet.

The second body 545 is disposed at the inlet to which the injection liquid 30 is supplied and supports the upper end of the check spring 550 .

The inlet is formed on the lower surface of the injection solution supply unit (600).

The second body 545 includes a seat 546 supporting the upper end of the check spring 550 and a lower edge 548 preventing the check spring 550 from being separated.

Since the unevenness 547 reduces an area in contact with the inlet through which the injection liquid 30 is supplied, the second body 545 can descend more easily when the piston 460 moves backward.

Since the irregularities 547 are in the form of a plurality of concentric circles with an expanding diameter, each irregularity 547 may block an inlet through which the injection liquid 30 is supplied.

The second body 545 may have a seating groove 549 formed on a lower surface of the seat 546 to which an upper end of the check spring 550 is installed.

The seating groove 549 maintains the upper end of the check spring 550 in a constant position.

The second body 545 has a plurality of vertical grooves 551 formed on the outer surface of the lower edge 548 .

The vertical groove 551 becomes a passage through which the injection liquid 30 passes when the second body 545 descends and the injection liquid 30 is supplied opening.

When the second body 545 is made of synthetic resin, opening and closing performance can be improved by the elastic force of the material.

The second check valve 730 has the same configuration as the first check valve 540 .

In the second check valve 730, the fourth flow path 721 of the washer 720 of the nozzle part 700 becomes an inlet of the injection liquid 30, and the injection port 712 of the nozzle part 700 is the injection liquid 30 is the exit of

The second check valve 730 is disposed in the order of the first body 731 , the check spring 740 , and the second body 735 in the front-rear direction in the second chamber 711 .

However, the first check valve 540 and the second check valve 730 may use check springs 550 and 740 having different elastic forces.

If the elastic force of the check spring 550 of the first check valve 540 is smaller than that of the check spring 740 of the second check valve 730, when the piston 460 moves backward, the second check valve 730 The injection liquid 30 can be supplied to the injection liquid chamber 511 while being easily opened.

In addition, if the elastic force of the check spring 550 of the first check valve 540 is smaller than that of the check spring 740 of the second check valve 730, when the piston 460 moves forward, the second check valve 730 ) is opened at a higher pressure, and the injection liquid 30 can be injected at a higher pressure.

The needle-free syringe 10 operates in the following order.

① Turn on the power of the controller 800.

② Press and hold the operation button 112 of the handle 111.

③ The control unit 800 supplies the injection liquid 30 to the cylinder 500 while compressing the main spring 480 by moving the moving frame 420 backward.

④ The locking device 440 locks the shaft 450 with the main spring 480 compressed.

⑤ The moving frame 420 moves forward and returns to its original position.

⑥ A triggering signal is transmitted to the control unit 800 when the animal's skin is pressed with the triggering device 900.

⑦ The controller 800 advances the moving frame 420 to unlock the locking device 440.

⑧ The piston 460 moves forward rapidly by the elastic force of the main spring 480.

⑨ The injection liquid 30 of the cylinder 500 is injected through the nozzle unit 700.

The operation button 112 is a switch that notifies the control unit 800 that the user is performing an operation.

The process of ③ to ⑨ is automatically repeated only when the operation button 112 is pressed.

In the foregoing, although specific embodiments of the present invention have been described and shown, the present invention is not limited to the described embodiments, and it is common knowledge in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have

Therefore, such modifications or variations should not be individually understood from the technical spirit or viewpoint of the present invention, and modified embodiments should be said to belong to the scope of the present invention.

10: needle-free syringe 20: vial
30: injection solution 100: case
110: front case 111: handle
112: operation button 113: front installation hole
114: clearance groove 115: front installation groove
116: insertion hole 117: silicon pad
118: pinhole 120: rear case
121: strap holder 200: battery
300: drive motor 310: coupling
400: pressure storage unit 410: fixed frame
411: front fixed disk 412: intermediate fixed disk
413: rear fixed disk 414: rear support
415: front support 416: front extension
417: rear extension 418: anti-rotation jaw
419: screw thread 420: moving frame
421: forward movement disk 422: backward movement disk
423: moving support 430: ball screw
431: screw shaft 432: moving nut
440: locking device 441: ball guide
442: ball 443: rocker
444: unlocker 445: fixing bolt
446: locking hole 447: guide hole
448: locking spring 449: fixed washer
450: shaft 451: insertion groove
452: locking groove 460: piston
461: insertion screw 462: sealing jaw
463: annular groove 464: O-ring
470: support disk 480: main spring
500: cylinder 510: transverse body
511: injection chamber 512: front mounting unit
513: front flange 514: first mounting groove
515: thread 516: rear mounting
517: extension pipe 518: rear flange
519: anti-rotation groove 520: second mounting groove
521: fifth mounting groove 522: O-ring
530: vertical body 531: first chamber
532: first passage 533: third mounting groove
534: screw thread 535: fourth mounting groove
540; First check valve 541: first body
542: bottom 543: through hole
544: upper edge 545: second body
546 seat 547 uneven
548: lower edge 549: seating groove
550: check spring 551: vertical groove
560: cylinder nut 600: injection solution supply unit
610: support part 611: first support pipe
612: insertion bundle 613: annular groove
615: O-ring 616: fixing nut
617: second support pipe 618: pedestal
619: thread 620: fitting
621: annular groove 622: O-ring
623: support ring 624: second flow path
630: spike 631: introduction needle
632: 3rd passage 640: fixing part
641: first fixture 642: second fixture
643: through hole 644: bending groove
645: ball plunger 650: protective cup
651: fitting protrusion 700: nozzle part
710: nozzle body 711: second chamber
712: nozzle 713: extension
714: first extension home 715: second extension home
720: washer 721: 4th euro
722: annular groove 723: O-ring
730: second check valve 731: first body
735: second body 740: check spring
750: nozzle nut 751: bent portion
800: control unit 900: trigger device
910: trigger guide 911: guide body
912: contact portion 913: contact groove
914: entrance 915: incision groove
916: Observation hole 917: Connection
918: screw thread 919: locking jaw
920: sensor pin 921: fastening groove
922: front stopper 923: rear stopper
930: trigger sensor 940: trigger nut
941: front nut 942: front nut flange
943: thread 944: rear nut
945: rear nut flange 946: stumbling block
947: step 948: fitting groove
949: insertion protrusion 950: screw thread
960: trigger spring

Claims (10)

a pipe having a nozzle part coupled to a front end, a rear end coupled to a needle-free syringe, and an injection liquid chamber formed therein;
a vertical body formed above the transverse body, having a first chamber formed thereon, a first flow path connecting the injection chamber and the first chamber at a lower part, and coupled with an injection solution supply unit for supplying an injection solution; and
And a first check valve coupled to the first chamber,
The first check valve is a cylinder for a needle-free syringe, characterized in that opened so that the injection liquid is supplied from the injection liquid supply unit to the injection liquid chamber when the piston retracts. According to claim 1,
The transverse body,
A front mounting portion coupled to the nozzle portion is formed at the front end,
A cylinder for a needle-free syringe, characterized in that a rear mounting portion to which the needle-free syringe is coupled is formed at the rear end. According to claim 2,
The front mounting portion has a front flange formed at the front end of the transverse body,
The front flange is a cylinder for a needleless syringe, characterized in that the first mounting groove is formed on the front surface and a screw thread to which the nozzle nut is coupled is formed on the outer surface. According to claim 2,
The rear mounting portion may include an extension tube through which a shaft of a needle-free syringe to which the piston is coupled reciprocates; and a rear flange formed at a rear end of the extension tube and fixed to the needle-free syringe by a cylinder nut.
The rear flange is a cylinder for a needleless syringe, characterized in that an anti-rotation groove is formed on the rear surface and a second mounting groove to which the O-ring is coupled is formed on the rear inner surface. According to claim 1,
The vertical body,
A third mounting groove into which the injection solution supply part is inserted is formed on the inner surface of the upper part,
A cylinder for a needle-free syringe, characterized in that a screw thread to which a fixing nut for restraining the injection solution supply unit is formed on the outer surface of the upper end. According to claim 1,
The injection solution supply unit,
a support portion coupled to an upper portion of the cylinder and having a second flow path formed therein;
a spike coupled to an upper portion of the support and having a third flow path therein;
a fixing portion coupled to the support portion and constraining the spike; and
A cylinder for a needle-free syringe, characterized in that it comprises a protective cup coupled to the fixing part and surrounding the vial into which the spike is inserted. According to claim 1,
The nozzle part,
A nozzle body having a second chamber formed therein and having an injection port formed at a front end thereof;
a second check valve coupled to the second chamber;
a washer coupled to the inside of the rear end of the nozzle body and having a fourth passage connecting the first chamber and the second chamber; and
A nozzle nut coupled to the front end of the transverse body and fixing the nozzle body to the front end of the transverse body;
The second check valve is a cylinder for a needleless syringe, characterized in that for closing the fourth flow path so that external air does not flow into the injection liquid chamber through the fourth flow path when the piston is retracted. According to any one of claims 1 to 7,
The needle-free syringe,
A case provided with an operating button;
a battery detachable from the case;
a driving motor coupled to the inside of the case and operated by power from the battery;
The front end is coupled to the piston and the rear end is coupled to the drive motor, and the pressure accumulator provides pressure necessary for injection through the operation of the drive motor;
a cylinder having a rear end coupled to the pressure accumulator;
An injection solution supply unit coupled to an upper portion of the cylinder to supply an injection solution;
a nozzle unit coupled to the front end of the cylinder;
a controller coupled to the case and electrically connected to the driving motor and the battery to operate the driving motor; and
A cylinder for a needle-free syringe, characterized in that it comprises a trigger device coupled to the front end of the case and providing a firing signal to the control unit when in contact with an object. According to claim 8,
The control unit moves the piston backward when the user presses the operation button and then fixes it.
The cylinder is a cylinder for a needle-free syringe, characterized in that the injection liquid is supplied to the injection chamber when the piston moves backward. According to claim 9,
The control unit releases the fixation of the piston when the triggering device provides a firing signal,
The piston rapidly advances to the injection chamber to pressurize the injection solution;
The injection liquid is a cylinder for a needle-free syringe, characterized in that injected into the object through the nozzle unit.

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