KR102463473B1 - Needleless syringe with portable drug inlet - Google Patents

Abstract

Disclosed is a needle-free syringe having a drug injection terminal. The needle-free syringe of the present invention is housed in a housing composed of a body and a handle, and an injection module for emitting the supplied drug to the skin of a recipient, and an injection module fixed to one side inside the housing and supplied from the outside of the housing Since the drug can be supplied from a portable drug container by configuring the water pump to supply the drug to the injection module, there is an effect that the drug can be injected quickly and conveniently.

Description

Needle-free syringe with drug injection terminal {NEEDLELESS SYRINGE WITH PORTABLE DRUG INLET}

The present invention relates to a needle-free syringe, and more particularly, to a needle-free syringe having a drug injection terminal capable of optimally injecting a drug to a recipient without a needle in a simple configuration using a portable drug.

In general, injection of the drug is performed using an oil needle syringe. The injection method using such an oil-needle syringe has various problems such as cross-contamination of the injection target, pain related to injection, and the possibility that the injection needle may be broken or dropped in the injection target.

Accordingly, in order to solve the problems associated with the oil needle syringe, an injection method using a needle-free syringe without a needle has recently been developed. A needle-free syringe refers to a device that can be injected by injecting a high-pressure injection solution into the skin of a person or animal.

Conventional needle-free syringes are powered by an external power source, such as an external gas source, to provide sufficient energy to move the drug solution through the skin.

For this reason, since the conventional needle-free syringe needs to be provided with a separate gas supply equipment, the overall size increases, thereby causing inconvenience in operation. In addition, the conventional needle-free syringe has a complicated design, which increases the manufacturing cost, and the injection amount of the chemical solution is set at the time of manufacturing the syringe, so it is difficult to control the injection amount of the chemical solution.

On the other hand, since the drug container is assembled in a needle-free syringe, it is operated using a small drug dose. When the drug is exhausted, the drug container is moved again, and the drug container is combined with the needle-free syringe at the drug container storage place and then moved to the operator. It is difficult to inject quickly because

KR Patent Publication No. 10-2012-0103859 (2012.09.20)

An object of the present invention to solve this problem is to provide a needle-free syringe having a drug injection terminal that can optimally inject a drug to a recipient without a needle in a simple configuration using a portable drug container.

Another object of the present invention is to provide a needle-free syringe having a drug injection terminal capable of rapidly moving a drug from a drug container to an injection unit using a pump.

And the present invention provides a needle-free syringe equipped with a drug injection terminal that can be used by replacing the drug container and the drug transport tube and using the drug container holder belt to make it easier to carry the drug container, and also to carry an extra drug container. to serve another purpose.

A needle-free syringe having a drug injection terminal of the present invention for solving these problems is accommodated in a housing consisting of a body portion and a handle portion, and an injection module that is accommodated in the body portion, and fires the supplied drug into the skin of the recipient, and the housing It can be achieved by configuring a water pump that is fixed to one side of the inside and supplies the drug supplied from the outside of the housing to the injection module.

In addition, the drug container for storing the injection drug and one end are coupled to the drug container and the other end is configured to further include a tube separated and coupled to the water pump, the injection module, a supply unit to which the drug is supplied from the water pump And, a discharge unit exposed to the front side of the body portion, receiving the drug from the supply unit and charging it, and a discharge unit that moves the piston forward in the inner cavity of the discharge unit so that the charged drug is fired on the skin of the subject. can do.

And the dispensing unit includes a first flow path through which the drug is supplied from the supply unit, a first cavity in which the drug supplied to the first flow path is filled, and a drug dispensing unit provided with a nozzle for firing the drug in the first cavity, and the first cavity. At least one backflow prevention part disposed inside the 1 flow path to prevent backflow of the drug, one or more airflow prevention parts disposed on the nozzle to prevent inflow of air from the outside, and coupled to surround the outside of the drug discharge part, , One end may further include a protective cap in contact with the skin of the recipient.

Therefore, according to the needle-free syringe provided with the drug injection terminal of the present invention, since the drug can be supplied from a portable drug container, there is an effect of quickly and conveniently injecting the drug.

In addition, according to the needle-free syringe provided with the drug injection terminal of the present invention, it is possible to carry an extra drug container, there is an effect that the injection can be continued without interruption.

In addition, according to the needle-free syringe having a drug injection terminal of the present invention, there is an effect that can move the drug at a constant pressure because of the use of a water pump.

In addition, according to the needle-free syringe having a drug injection terminal of the present invention, it can be implemented with a simple configuration compared to the prior art, thereby reducing manufacturing cost, and injecting a drug to the recipient without a needle, resulting in needle breakage It is possible to prevent problems such as

And according to the needle-free syringe having a drug injection terminal of the present invention, by adjusting the elastic force of the spring, it is possible to adjust the amount of drug fired by the piston and its pressure. Accordingly, it is possible to adjust the injection amount and the firing pressure according to the condition of the recipient so that the optimal customized injection can be made for the recipient.

1 is a cross-sectional view of a needle-free syringe having a drug injection terminal according to an embodiment of the present invention;
Figure 2 is a view showing the configuration of the scanning module of Figure 1;
Figure 3 is a view showing the first rotating body of Figure 2;
Figure 4 is a view showing in detail part A of Figure 2;
5a to 5c are views showing the operation of the needle-free syringe according to an embodiment of the present invention;
6 is a detailed configuration diagram of a water pump according to an embodiment of the present invention;
and
7 is a view showing an example of a mobile belt for carrying a drug box according to an embodiment of the present invention.

The terms or words used in the present specification and claims are not to be construed as limited in their ordinary or dictionary meanings, and on the principle that the inventor can appropriately define the concept of the term in order to best describe his invention. It should be interpreted as meaning and concept consistent with the technical idea of the present invention.

Throughout the specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated. In addition, terms such as “…unit”, “…group”, “module”, and “device” described in the specification mean a unit that processes at least one function or operation, which is implemented by a combination of hardware and/or software can be

Throughout the specification, the term “and/or” should be understood to include all combinations possible from one or more related items. For example, the meaning of “the first item, the second item and/or the third item” means to be presented from the first, second, or third item as well as two or more of the first, second, or third items. A combination of all possible items.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

1 is a view showing a needle-free syringe having a drug injection terminal according to an embodiment of the present invention, FIG. 2 is a view showing the configuration of the injection module of FIG.

Referring to the drawings, the needle-free syringe 100 having a drug injection terminal of the present invention includes a needle-free injection module 120 and a drug injection terminal 232 without a needle.

Accordingly, the needle-free syringe 100 is a drug that is injected from the outside through the drug injection terminal 232 in a state in which one side of the injection module 120 is in contact with the skin of a person to be treated, for example, a person or an animal from the injection module 120 . It is configured so that the drug can be injected into the skin of the recipient by firing with a strong pressure.

To this end, the needle-free syringe 100 having a drug injection terminal according to an embodiment of the present invention includes a housing 110 forming the exterior of the syringe, an injection module 120 accommodated inside the housing 110, and a housing ( It may include a water pump 230 fixed to one side of the inner side of the housing and supplying the drug supplied to the drug injection terminal 232 from the outside of the housing to the injection module 120 .

In addition, the drug container 210 for storing the injection drug and one end is coupled to the drug container 210 and the other end may include a tube 220 that is separated and coupled to the drug injection terminal 232 of the water pump 230. .

The drug container 210 includes a body for storing a drug, and a drug outlet 212 and an air inlet 214 for discharging the drug stored in the body.

Referring to the detailed configuration diagram of the water pump according to an embodiment of the present invention in FIG. 6 , the water pump 230 is coupled to the upper portion of the base substrate 234 and the base substrate 234 fixed to one side of the inside of the housing. It is coupled to the other end of the compression pump 231 and the compression pump 231 for supplying the drug supplied through the tube 220 to the connection pipe 236 coupled to the drug injection unit 141 of the supply unit 140, the tube It may include a drug injection terminal 232 coupled to one end of the 220.

In addition, the water pump 230 may be configured to control the operation of the pump according to the driving conditions.

Specifically, when a drug is injected and supplied to the injection module, the water pump is driven to supply, and when the injection module discharges the drug thereafter, the operation of the water pump is stopped to reduce power consumption.

The drug injection terminal 232 is preferably configured to partially protrude to the outside of the housing 110 so that it can be separated and coupled to the tube 220 .

At this time, a shielding ring 232a is interposed in a portion where the drug injection terminal 232 protrudes to the outside of the housing 110 to seal the inside and outside of the housing.

In addition, the other side of the connector 236 is coupled to the second connector 235 so that the drug flowing into the drug injection terminal 232 is supplied to the supply unit 140 through the connector 236 .

The housing 110 may include a body portion 111 and a handle portion 115 extending from one side of the body portion 111 to be gripped by the user, that is, the operator's hand.

An inner space is formed in the body portion 111 , and the injection module 120 may be accommodated in the space. A first opening 111a for exposing a portion of the injection module 120 , for example, the discharge unit 130 of the injection module 120 to the outside, may be formed at one end, for example, the front side of the body portion 111 . A second opening 111b may be formed on the upper side of the body 111 so that the drug injection terminal 232 of the water pump 230 protrudes.

An internal space is formed in the handle part 115 , and the battery part 180 for supplying operating power to the injection module 120 may be disposed in the space. The battery unit 180 may be a general battery or a rechargeable battery that can be charged.

The injection module 120 may include a discharge unit 130 , a supply unit 140 , and a firing unit 150 . In the injection module 120 , the remaining units except for the discharge unit 130 may be accommodated inside the body portion 111 of the housing 110 .

The supply unit 140 of the injection module 120 may be disposed between the discharge unit 130 and the firing unit 150 inside the housing 110 . The supply unit 140 may receive a drug from the drug container 200 coupled to the housing 110 , and deliver it to the discharge unit 130 .

The supply unit 140 operates to supply the drug supplied from the connection tube 236 to the injection module 120 .

To this end, the supply unit 140 may include a drug injection unit 141 , a second flow path 142 , and a second cavity 143 .

The drug injection unit 141 is connected to one end of the connection pipe 236 to receive the drug supplied from the water pump 230 and guide it to the second flow path 142 .

The second flow path 142 is formed between the drug injection unit 141 and the first flow path 132 of the discharge unit 130 to supply the drug supplied to the drug injection unit 141 to the first flow path 132 . have.

As described above, one or more backflow prevention units may be disposed inside the second flow path 142 , and the backflow prevention unit prevents the drug supplied to the second flow path 142 from flowing backward in the drug injection unit 141 direction. can

Since such a backflow prevention unit may use a known device, a detailed configuration thereof will be omitted.

The second cavity 143 is formed to be disposed on the same central axis as the first cavity 133 of the discharge unit 130 , and the piston 161 of the discharge unit 150 is inserted in the same manner as the first cavity 133 before and after. Configured to be vibrational.

Accordingly, the inner diameter of the second cavity 143 may be the same as the outer diameter of the piston 161 .

In addition, the supply unit 140 may further include a heater 145 for allowing the drug flowing through the second flow path 142 to have a uniform viscosity.

The heater 145 may receive operating power from the battery unit 180 to heat the drug flowing through the second flow path 142 to a set temperature. At this time, the heater 145 may be selectively operated when the drug is supplied to the supply unit 140 to heat the inside of the second flow path 142 .

In addition, it is preferable that one end of the drug injection unit 141 is bent so that the connecting pipe 236 can be easily coupled, so that the bent direction faces the second connector 235 .

The injection module 120 discharges the drug supplied from the supply unit 140 to the discharge unit 130 according to a predetermined pressure applied from the firing unit 150 to the discharge unit 130, for example, elastic force by the elastic member. It can be fired to the outside of 130, that is, the skin of the recipient.

The discharge unit 130 of the injection module 120 may be disposed to be exposed to the outside of the housing 110 so as to be in contact with the skin of the recipient. The discharge unit 130 may discharge the drug supplied through the supply unit 140 to the outside according to the operation of the firing unit 150 . The discharge unit 130 may include a drug discharge unit 131 and a protective cap 135 .

The drug discharge unit 131 includes a first flow path 132 through which a drug is supplied from the supply unit 140 , a first cavity 133 in which a drug supplied through the first flow path 132 is temporarily stored, and the first It is formed on one side of the cavity 133 may include a nozzle 134 for firing the drug.

Here, the piston 161 of the firing unit 150, which will be described later, is inserted into the first cavity 133 to move in the horizontal direction, for example, it may be moved forward and backward. Accordingly, the inner diameter of the first cavity 133 may be formed to be the same as the outer diameter of the piston 161 .

In addition, the nozzle 134 may be formed to have a significantly smaller inner diameter than the inner diameter of the first cavity 133 in order to increase the firing pressure of the drug.

The drug discharge unit 131 may further include one or more backflow prevention units 137 . Referring to FIGS. 2 and 5A , the backflow prevention unit 137 may be disposed in the first flow path 132 of the drug discharge unit 131 . However, the present invention is not limited thereto, and one or more backflow prevention units 137 may be disposed inside the flow path of the supply unit 140 to be described later.

The backflow prevention unit 137 may prevent the drug supplied to the first cavity 133 through the first flow path 132 from flowing back in the direction of the supply unit 140 through the first flow path 132 .

The backflow prevention unit 137 may include an elastic member such as a spring and a shielding member connected thereto.

In addition, the drug discharge unit 131 may further include one or more air inlet prevention unit 138 . Referring to FIGS. 2 and 5A , the air inflow prevention unit 138 may be disposed in the nozzle 134 to prevent external air from flowing into the first cavity 133 through the nozzle 134 . The air inflow prevention unit 138 may include an elastic member such as a spring and a shielding member connected thereto.

The above-described backflow prevention unit 137 and air inflow prevention unit 138 may open or block the corresponding area, for example, the inside of the first flow path 132 and the inside of the nozzle 134 according to the operation of the firing unit 150 . .

For example, when the piston 161 is moved backward in the first cavity 133 by the firing unit 150, the backflow preventing unit 137 opens the first flow path 132, and the air inflow preventing unit 138 is The nozzle 134 may be shielded. Accordingly, the drug may flow into the first cavity 133 through the first flow path 132 and be temporarily stored.

In addition, when the piston 161 is moved forward in the first cavity 133 by the firing unit 150, the backflow prevention unit 137 blocks the first flow path 132, and the air inflow prevention unit 138 is The nozzle 134 may be opened. Accordingly, the drug temporarily stored in the first cavity 133 may be fired to the outside through the nozzle 134 .

Meanwhile, according to another embodiment of the present invention, the backflow prevention unit 137 may open or block the first flow path 132 according to the operation of the supply unit 140 . For example, when a drug is supplied from the supply unit 140 to the first flow path 132 , the backflow prevention unit 137 may open the inside of the first flow path 132 by the pressure of the supplied drug.

The protective cap 135 may be arranged to be coupled to surround the outside of the drug discharge unit 131 . The protective cap 135 may prevent the nozzle 134 of the drug discharge unit 131 from coming into direct contact with the skin of the recipient. To this end, one end of the protective cap 135 may be formed to extend from one end of the corresponding drug discharging unit 131 to be in contact with the skin of the recipient. In addition, the other end of the protective cap 135 may be arranged to maintain a predetermined interval with the drug discharge unit 131 by a trigger unit 136 to be described later. The protective cap 135 may be formed of a material such as soft plastic in order to reduce the feeling of rejection of the recipient.

On the other hand, the discharge unit 130 may further include a trigger unit 136 that can control the operation of the firing unit (150). The trigger unit 136 may include one or more gap maintaining members 136a and a sensor 136b disposed between the drug discharge unit 131 and the protective cap 135 .

The spacing member 136a may be disposed between the other end of the protective cap 135 and one side of the drug discharging unit 131 corresponding thereto. The spacing member 136a may be formed of an elastic member such as a spring.

The spacing member 136a maintains a constant distance between the other end of the protective cap 135 and one side of the drug discharge unit 131 in normal times, and when one end of the protective cap 135 is in contact with the skin of the recipient, The other end of the protective cap 135 may be in contact with one side of the drug discharge unit 131 .

The sensor 136b may be disposed on one side of the drug discharge unit 131 . The sensor 136b may output a trigger signal by detecting a gap between the protective cap 135 and the drug dispensing unit 131 .

For example, when a predetermined distance is maintained between the other end of the protective cap 135 and one side of the drug discharge unit 131 by the above-described gap maintaining member 136a, the sensor 136b does not output a trigger signal. On the other hand, when the protective cap 135 is in contact with the skin of the recipient and the other end of the protective cap 135 is in contact with one side of the drug discharge unit 131 , the sensor 136b may output a trigger signal.

Here, the trigger signal output from the sensor 136b may be provided to the driving unit 170 of the firing unit 150 . The driving unit 170 may control the rotation direction of the first rotating body 171 based on the trigger signal. The operation of the trigger unit 136 will be described in detail later with reference to the drawings.

The firing unit 150 of the injection module 120 may be connected to the supply unit 140 inside the housing 110 . The firing unit 150 applies a predetermined pressure inside the first cavity 133 of the discharge unit 130 and the second cavity 143 of the supply unit 140, so that the drug is injected through the discharge unit 130. can make it happen The firing unit 150 may include a firing unit 160 and a driving unit 170 .

The launch unit 160 may include a piston 161 and a cylinder 162 into which one side of the piston 161 is inserted.

One side of the piston 161 may be inserted into the cylinder 162 and coupled to the spring 165 . The other side of the piston 161 may be exposed to the outside of the cylinder 162 . The piston 161 may be moved forward and backward in the cavity of each of the discharge unit 130 and the supply unit 140 according to the operation of the spring 165 by the driving unit 170, for example, compression and decompression. .

The cylinder 162 may include a spring 165 , a spring compression unit 166 , and a stopper 164 .

One side of the spring 165 may be coupled to surround one side of the outer circumferential surface of the piston 161 inserted into the cylinder 162 . The other side of the spring 165 may be connected to the spring compression part 166 .

The spring 165 may be compressed inside the cylinder 162 by the spring compression unit 166 . At this time, the piston 161 may be moved backward in the inner direction of the cylinder 162 by compression of the spring 165 . In addition, in a state in which the spring 165 is compressed, the compression may be released by the operation of the driving unit 170 . Accordingly, the piston 161 may be moved forward in the outer direction of the cylinder 162 , that is, in the common direction of each of the discharge unit 130 and the supply unit 140 , due to the elastic force caused by the decompression of the spring 165 .

The spring compression unit 166 may compress the spring 165 to a predetermined length according to the operation of the driving unit 170 . The spring compression unit 166 may compress the spring 165 while being moved in the horizontal direction, for example, backward by the driving unit 170 .

One or more stoppers 164 are disposed inside the cylinder 162 and may be in contact with one side of the spring 165 . The stopper 164 may control the length of the spring 165 in the cylinder 162 when the spring 165 is decompressed, that is, the length at which the spring 165 is unfolded.

As described, the discharge unit 160 of this embodiment advances the piston 161 in the direction of the discharge unit 130 using the elastic force of the spring 165 so that the drug inside the discharge unit 130 is fired to the recipient. can do.

Here, the firing pressure of the drug may vary depending on the elastic force of the spring (165). The elastic force of the spring 165 may vary depending on the degree of compression of the spring 165 by the spring compression unit 166 and the degree of decompression of the spring 165 by the stopper 164 .

For example, when the backward movement distance of the spring compression unit 166 is increased by the driving unit 170 , the compression force of the spring 165 may be increased, so that the elastic force according to the decompression of the spring 165 may be increased. In addition, when the distance between one side of the spring 165 compressed inside the cylinder 162 and the stopper 164 is increased, the compression releasing force of the spring 165 is increased, so that the elastic force according to the compression of the spring 165 is increased. can be That is, the elastic force of the spring 165 may be varied according to the movement distance of the spring compression part 166 and the separation distance from the stopper 164 .

In this way, the launch unit 160 of the present embodiment may allow the drug to be launched to the recipient through the forward movement of the piston 161 using the elastic force of the spring 165 . Accordingly, the needle-free syringe 100 of the present invention can be implemented with a simple configuration compared to the prior art, thereby reducing manufacturing cost, and injecting a drug to the recipient without an injection needle, thereby avoiding problems such as broken needles. can be prevented

The driving unit 170 may compress or decompress the spring 165 so that the piston 161 of the firing unit 160 moves forward and backward. The driving unit 170 may include a first rotating body 171 , a second rotating body 172 , a fixing unit 173 , and a motor 174 .

FIG. 3 is a view showing the first rotating body of FIG. 2 , and FIG. 4 is a view showing part A of FIG. 2 in detail.

2 to 4 , the first rotating body 171 of the driving unit 170 may include a coupling hole 171a, a rotation control unit 171b, and a fixed control unit 171c. The first rotating body 171 may be a cam.

A rotation shaft (not shown) of the motor 174 may be inserted into the coupling hole 171a of the first rotation body 171 to be coupled thereto. Accordingly, the first rotation body 171 may be rotated in one direction and the other direction depending on the rotation direction of the rotation shaft by the rotation of the motor 174 .

The rotation control unit 171b of the first rotating body 171 may be formed as a step of a predetermined height. The rotation control unit 171b may be in contact with one surface of the first rotation body 171 to control the rotation distance of the second rotation body 172 which is rotated according to the rotation of the first rotation body 171 . In other words, the second rotating body 172 may be rotated by the distance from the initial position in contact with the one surface of the first rotating body 171 to the step of the rotation control unit (171b).

The fixing control part 171c of the first rotating body 171 may be in contact with a fixing part 173 to be described later to control fixing and releasing of the spring 165 of the fixing part 173 . The fixed control unit 171c may include a protruding portion protruding to a predetermined height and a non-protruding portion relatively lower than the protruding portion.

Accordingly, when one end of the fixing part 173 comes into contact with the protruding part of the fixing control part 171c by the one-way rotation of the first rotating body 171 , the spring 165 may be fixed by the fixing part 173 . In addition, when one end of the fixing part 173 comes into contact with the non-protruding part of the fixing control part 171c by rotation of the first rotating body 171 in the other direction, the fixing of the spring 165 is released by the fixing part 173 . can be

The second rotating body 172 may be in contact with one surface of the first rotating body 171 to be rotated depending on the first rotating body 171 . The second rotating body 172 may be a cam follower.

The second rotating body 172 is connected to the spring compression unit 166 of the firing unit 160, and the spring compression unit 166 may be moved backward by a predetermined distance according to the rotation. In this case, the moving distance of the spring compression unit 166 may correspond to the rotating distance of the second rotating body 172 . The rotation distance of the second rotation body 172 may be controlled by the rotation control unit 171b of the first rotation body 171 .

The fixing part 173 temporarily fixes the spring 165 compressed inside the cylinder 162 according to the rotation direction of the first rotating body 171 to maintain the compressed state, or releases the fixed state to release the compressed spring 165 . ) can be decompressed.

For example, when the first rotating body 171 is rotated in one direction, the fixing unit 173 may contact the protruding portion of the fixing control unit 171c of the first rotating body 171 to temporarily fix the spring 165 . . At this time, the spring 165 may be in a compressed state by the backward movement of the spring compression unit 166 . In addition, when the first rotating body 171 is rotated in the other direction, the fixing part 173 is in contact with the non-protruding part of the fixing control part 171c of the first rotating body 171 to determine the fixed state of the spring 165 . can be turned off

The motor 174 may rotate the first rotating body 171 in one direction and the other direction. The motor 174 may be operated by receiving operating power from the above-described battery unit 180 . The motor 174 may be a brushless DC motor (BLDC motor) for high-speed rotation, but is not limited thereto.

Referring back to FIG. 2 , the needle-free syringe 100 may further include a display unit 190 for indicating that the injection is completed to the recipient after the injection of the drug by the injection module 120 .

The display unit 190 is disposed under the injection module 120 inside the body portion 111 of the housing 110 , and may be disposed parallel to the discharge unit 130 of the injection module 120 . The display unit 190 may spray paint or paint of a predetermined color onto the skin of the recipient at the same time that the drug is emitted from the discharge unit 130 . Accordingly, it can be recognized from the outside that the injection to the subject has been completed. When the spring 165 of the discharge unit 160 is released and one side of the display unit 190 is in contact with the stopper 164 , the display unit 190 may spray a predetermined amount of paint or paints accordingly.

5A to 5C are diagrams illustrating the operation of a needle-free syringe according to an embodiment of the present invention.

Hereinafter, the operation of the needle-free syringe 100 of the present embodiment will be described in detail with reference to FIGS. 1 to 4 described above along with FIGS. 5A to 5C .

First, referring to FIG. 5A , in the initial state, that is, before the needle-free syringe 100 is driven, the piston 161 of the launch unit 160 moves forward into the first cavity 133 of the discharge unit 130 . and may be in an inserted state. In this case, the backflow prevention part 137 and the air inflow prevention part 138 may be in a state of shielding the first flow path 132 and the nozzle 134 of the discharge unit 130 , respectively.

Then, referring to FIG. 5B , the needle-free syringe 100 may be driven to be in a charging state in which the drug is filled in the dispensing unit 130 .

Specifically, as the motor 174 of the driving unit 170 rotates in one direction, the first rotating body 171 and the second rotating body 172 may be rotated. Then, the spring compression unit 166 of the firing unit 160 connected to the second rotating body 172 may be moved backward by a predetermined distance in response to the rotational distance of the second rotating body 172 .

The spring 165 inside the cylinder 162 is compressed by the backward movement of the spring compression unit 166 , and the piston which was inserted into the first cavity 133 of the discharge unit 130 according to the compression of the spring 165 . 161 may be moved backward in the cylinder 162 direction.

At this time, the compressed spring 165 may be temporarily fixed by the fixing unit 173 of the driving unit 170 . The fixing part 173 may temporarily fix the spring 165 by being in contact with the protruding part of the fixing control part 171c of the first rotating body 171 as the first rotating body 171 rotates in one direction.

As the piston 161 moves backward, the backflow prevention unit 137 of the discharge unit 130 opens the first flow path 132 , and the drug flows into the first flow path 132 through the supply unit 140 , It may be filled in the first cavity 133 .

Here, the filling amount of the drug varies depending on the backward movement distance of the piston 161, and the backward movement distance of the piston 161 may vary depending on the degree of compression of the spring 165, that is, the backward movement distance of the spring compression unit 166. have. In addition, the backward movement distance of the spring compression unit 166 may vary according to the rotation distance of the second rotation body 172 by the rotation control unit 171b of the first rotation body 171 .

On the other hand, the heater 145 is driven in the supply unit 140, and the drug flowing from the supply unit 140 to the first flow path 132 of the discharge unit 130 by the heater 145 can maintain a constant temperature. . In addition, the air inflow prevention unit 138 may maintain a state in which the nozzle 134 of the discharge unit 130 is shielded.

Next, referring to FIG. 5C , one end of the protective cap 135 of the discharge unit 130 may be in an injection state in contact with the skin of the recipient.

Specifically, the protective cap 135 may be in contact with the skin of the recipient so that the other end of the protective cap 135 may be in contact with the sensor 136b of the trigger part 136 of the drug discharge part 131 . Accordingly, the sensor 136b may output a predetermined trigger signal to the driver 170 .

The motor 174 of the driving unit 170 may reversely rotate the motor 174 based on the trigger signal, that is, rotate in the other direction opposite to the previously rotated one direction. Accordingly, the first rotating body 171 connected to the rotating shaft of the motor 174 may be reversely rotated.

By the reverse rotation of the first rotating body 171, the fixed part 173 of the driving unit 170 is in contact with the non-protruding part of the fixed control unit 171c of the first rotating body 171, whereby the spring 165 is fixed. state can be released.

The spring 165 in a compressed state according to the release of the fixing portion 173 may be decompressed from the inside of the cylinder 162 and spread to a predetermined length. Accordingly, the piston 161 may be moved forward into the first cavity 133 of the discharge unit 130 by the decompressed spring 165 . The drug filled in the first cavity 133 of the discharge unit 130 by the forward movement of the piston 161 is launched into the skin of the recipient through the nozzle 134, and the drug is injected into the skin by the pressure and the injection can be completed.

At the same time, when one side of the spring 165 comes into contact with the stopper 164 according to the decompression of the spring 165, a predetermined amount of paint or paint is sprayed onto the subject's skin from the display unit 190, thereby injecting the subject. may indicate that it has been completed.

As described above, the needle-free syringe 100 of this embodiment moves the piston 161 using the elastic force caused by the compression and decompression of the spring 165, so that the drug is injected with a strong pressure according to the movement of the piston 161. It can be fired to cause the subject to be injected with the drug.

Accordingly, the needle-free syringe 100 of the present invention can be implemented with a simple configuration compared to the prior art, thereby reducing manufacturing cost, and injecting a drug to the recipient without an injection needle, thereby avoiding problems such as broken needles. can be prevented

In addition, the needle-free syringe 100 of the present invention by controlling the rotation direction and the rotation distance of the first rotating body 171 and the second rotating body 172 of the driving unit 170 to adjust the elastic force of the spring 165, It is possible to adjust the amount of drug fired by the piston 161 and its pressure. Accordingly, the needle-free syringe 100 of the present invention can adjust the injection amount and the firing pressure according to the condition of the recipient so that the optimal customized injection can be made for the recipient.

And, according to the needle-free syringe having a drug injection terminal of the present invention, because the drug can be supplied from the drug container that is carried, not only can the drug be injected quickly and conveniently, but also an extra drug container can be carried, so it can be stopped It has the effect of being able to continue injecting without doing it.

Although the present invention has been described in detail with respect to the described embodiments, it is obvious to those skilled in the art that various changes and modifications are possible within the scope of the technical spirit of the present invention, and it is natural that such variations and modifications belong to the appended claims.

100: needle-free syringe 110; housing
120; injection module 130: dispensing unit
131: drug discharge unit 135: protective cap
136: trigger unit 140: supply unit
150: launch unit 160: launch unit
161: piston 1 62: cylinder
165: spring 166: spring compression part
170: driving unit 171: first rotating body
172: second rotating body 173: fixed part
174: motor 210: drug container
212: drug outlet 214: air inlet
220: tube 230: water pump
231: extrusion pump 232: drug injection terminal
234: base substrate 235: second connector
236: connector 300: portable storage box

Claims (6)

a housing comprising a body and a handle;
An injection module accommodated in the body portion and emitting the supplied drug to the skin of the recipient; And
a water pump fixed to one side of the housing inside and supplying the drug supplied from the outside of the housing to the injection module;
Needle-free syringe having a drug injection terminal comprising a.
The method according to claim 1,
a drug container for storing injection drugs; and
a tube having one end coupled to the drug container and the other end being separated and coupled to the water pump;
further comprising,
The injection module,
a supply unit to which the drug is supplied from the water pump;
a discharging unit exposed to the front side of the body and receiving and charging the drug from the supply unit; and
a firing unit that moves a piston forward in the inner cavity of the discharge unit so that the charged drug is fired on the skin of the recipient;
Needle-free syringe having a drug injection terminal comprising a.
3. The method of claim 2,
The discharge unit is
a drug discharge unit having a first flow path through which the drug is supplied from the supply unit, a first cavity in which the drug supplied to the first flow path is filled, and a nozzle for firing the drug in the first cavity;
at least one backflow prevention unit disposed inside the first flow path to prevent backflow of the drug;
At least one air inlet prevention unit disposed on the nozzle to prevent the inflow of air from the outside; And
a protective cap coupled to surround the outer side of the drug discharge unit, one end of which is in contact with the skin of the recipient;
Needle-free syringe having a drug injection terminal further comprising a.
4. The method of claim 3,
The discharge unit further comprises a trigger for controlling the operation of the firing unit,
The trigger unit,
a gap maintaining member disposed between the other end of the protective cap and the drug dispensing part; and
And a sensor for outputting a trigger signal to the firing unit by detecting the gap between the protective cap and the drug dispensing unit,
The sensor is a needle-free syringe with a drug injection terminal, characterized in that outputting the trigger signal when the other end of the protective cap is in contact with the drug discharge unit.
3. The method of claim 2,
The supply unit is disposed between the discharge unit and the firing unit,
a second flow path for supplying the drug supplied from the drug container to the dispensing unit;
A second cavity formed to be disposed on the same line as the inner cavity of the discharge unit; And
a heater for heating the drug flowing through the second flow path to a set temperature;
Needle-free syringe having a drug injection terminal further comprising a.
3. The method of claim 2,
Drug injection terminal, which is accommodated in the body to be arranged in parallel with the discharge unit, and further comprises a display unit for spraying at least one of paint and paint onto the skin of a person to be treated when the drug is fired from the discharge unit Needle-free syringe equipped with.

Images