KR101709712B1 - Drug injection apparatus - Google Patents

Abstract

The present invention relates to a drug injection device having a negative pressure generating device and a channel, and a filter casing cut between a portion of the channel and a filter casing installed therebetween. The drug injection device includes a plug provided between an inlet and an outlet, By shutting off the liquid, the liquid can not flow back into the equipment, preventing equipment failure. In addition, the user can easily know when to replace the plug through the indicator.
Such a filter casing includes a shielding member for partitioning a space inside the filter casing into a front portion and a rear portion, and a plug for filtering backward flowing liquid.

Description

[0001] DRUG INJECTION APPARATUS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drug infusion device, and more particularly, to a drug infusion device including a negative pressure generation device that is used in surgery such as mesotherapy and inhales skin.

Unless otherwise indicated herein, the contents set forth in this section are not prior art to the claims of this application and are not to be construed as prior art to be included in this section.

Various skin treatment methods have been introduced to prevent aging of the skin in the cosmetic molding field, especially in the field of skin care. Typically, there is a method of massaging the skin using a nutrient-containing substance, but a meso therapy method of injecting a drug into the skin using a syringe has been introduced.

Mesotherapy is a procedure in which a small amount of therapeutic drug is directly injected into the skin layer and subcutaneous layer using a special injection device and a microinjection needle. Mesotherapy increases blood circulation and lymphatic circulation in the injected area to remove various pain, partial obesity, and skin wrinkles, prevent skin aging, and its effects are immediate and painful at the time of treatment. have.

Mesogun or injection gun is used as a means of automatically injecting drugs in the treatment of such mesotherapy. As an example of such a drug injection device, Korean Patent Registration No. 10-1501611 discloses a drug injection device in which the pressure of the syringe is released.

Korean Patent Registration No. 10-1489397 discloses a drug injection device including a suction duct for sucking skin.

However, such a drug infusion device suffers a suction even after the injection of the drug, and if the remaining drug is not injected, the drug is backwashed by the suction. There is a problem that the refluxed drug enters the inside of the equipment and causes malfunction of the vacuum motor and other parts.

Korean Patent Publication No. 10-1489397 entitled " Simultaneous Electrical Stimuli Drug Injection Device " Korean Patent Publication No. 10-1501611 'Intra-syringe internal pressure relieving automatic drug injection device'

The present invention provides a drug injection device including a sound pressure generator for sucking skin, which prevents liquid not injected into the skin from flowing back into the device.

According to the embodiment, there is described a drug injection device applied to a drug injection device having a negative pressure generating device and a channel, and including a filter casing cut in a part of the channel and provided therebetween. Wherein the filter casing includes a shielding member for partitioning the interior space of the filter casing into a front portion and a rear portion, and a plug for filtering backward flowing liquid.

The disclosed drug injection device can block the liquid that has not been injected into the skin by using the plug included in the filter casing, so that the liquid does not flow back into the device, and thus the device can be prevented from malfunctioning. In addition, the user can easily know when to replace the plug through the indicator.

1 is a perspective view of a drug infusion device according to one embodiment.
2 is an enlarged view of a drug infusion device according to one embodiment.
3 is a perspective view of a filter casing of a drug infusion device according to one embodiment.
4 is an assembly view of a filter casing of a drug infusion device according to one embodiment.
5 is a block diagram of a filter casing of a drug infusion device according to an embodiment.
6 is a cross-sectional view of a filter casing of a drug infusion device according to one embodiment.
7 is a cross-sectional view of a filter casing of a drug infusion device according to one embodiment.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like numbers refer to like elements throughout.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The terms used below are defined in consideration of the functions of the embodiments of the present invention, which may vary depending on the intention of the user, the operator, or the custom. Therefore, the definition should be based on the contents throughout this specification.

Figures 1 to 7 illustrate one embodiment. Fig. 1 is a perspective view of a drug infusion device according to this embodiment, and Fig. 2 is an enlarged view. Fig. 3 is a perspective view of the filter casing of the drug infusion device, Fig. 4 is an assembled view, Fig. 5 is a schematic view, Fig. 6 is a sectional view and Fig.

Referring to FIG. 1, a syringe 110 is mounted on one side of the drug infusion device 100, and the syringe 110 is provided to be movable in a back and forth direction. Such a drug injection device 100 is disclosed in Korean Patent Registration No. 10-1501611, which is hereby incorporated by reference.

The drug injector 100 includes a sucker 120 installed in front of the needle of the syringe 110 for sucking the skin, a negative pressure generator for generating negative pressure in the sucker 120, (Not shown). Such a drug injection device 100 is disclosed in Korean Patent Registration No. 10-1489397, which is incorporated herein by reference.

As shown in FIGS. 1 and 2, the drug injection device 100 includes a filter casing 240 that blocks the liquid not injected into the skin from flowing back into the apparatus. The filter casing 240 is installed while cutting a part of the pipeline 140 and connecting them.

As shown in FIG. 2, the inlet 210 is formed adjacent to the channel 142 connected to the sucker 120 to allow liquid to flow in and out.

The outlet 220 is formed adjacent to the channel 144 connected to the negative pressure generator so that the gas can flow in and out.

The filter casing (240 in FIG. 1) is coupled to the inlet 210 and the outlet 220, so that the backwashing liquid will necessarily pass through the filter casing (240 in FIG.

As shown in FIG. 3, the filter casing 240 separated from the drug injector (100 in FIG. 1) has an inlet pipe 254 and an outlet pipe 256 connected to the channel (140 in FIG. 1) Respectively.

Preferably, the inlet pipe 254 is fastened to the inlet 210 and the outlet pipe 256 is fastened to the outlet 220.

The filter casing 240 may be divided into a lower filter casing 250 and an upper filter casing 260. The upper filter casing 260 is in contact with the bottom surface of the lower filter casing 250 and joined to each other.

4 and 5, the filter casing 240 includes a plug 230 and a shielding member 270 therein.

The plug 230 is installed inside the filter casing 240 and is made of a wet and swellable material and expands when exposed to liquid to close the inside of the filter casing 240. Such plug 230 may be a compressed tissue (or coin tissue), pulp or viscose rayon, and the material and construction of the compressed tissue may be understood by one of ordinary skill in the art.

Accordingly, when the negative pressure generator is driven, the gas in the sucker (120 in FIG. 1) and the channel (140 in FIG. 1) passes through the filter casing (240 in FIG. 1) to be evacuated to form a vacuum state, 1 240), when the plug 230 expands and closes the inner space of the filter casing 240 (FIG. 1), the liquid is shut off.

The shielding member 270 is installed inside the filter casing 240 to partition the inner space of the filter casing 240 into a front portion and a rear portion. At least one slit 274 is formed in the shielding member 270. This shielding member 270 blocks the liquid in the front portion of the filter casing 240 from flowing into the rear portion of the filter casing 240.

Preferably, the shielding member 270 is ring-shaped, and the slit 274 is formed along the inner circumferential surface of the shielding member 270. The shielding member 270 is installed so that the outer circumferential surface thereof is in close contact with the inner circumferential surface of the filter casing 240. At this time, the grooves 252 and 262 are formed on the inner circumferential surface of the filter casing 240 with the steps 253 and 263, and the shielding member 270 is attached to the grooves 252 and 262.

Preferably, the plug 230 is cylindrical and is inserted into close contact with the inner circumferential surface of the shielding member 270. At this time, an insertion hole 272 is formed at the center of the shielding member 270, and the plug 230 is inserted into the insertion hole 272.

With this structure, the slit 274 is normally opened, and when the plug 230 is exposed to the liquid, the slit 274 is closed by the expanded volume.

As shown in FIG. 5, the drug infusion device (100 of FIG. 1) further includes indicators 290 and 290 '.

The wet-swellable material has an appropriate lifetime, so that the swellability of the wet-inflating material is reduced as it is repeatedly brought into contact with the liquid, and later the slit 274 of the shielding member 270 can not be completely closed. Therefore, indicators 290 and 290 'are required to indicate the lifetime of the plug 230. [

The indicators 290 and 290 'are installed at least at either the front side or the rear side of the shielding member 270 inside the filter casing 240. In addition, it is possible to indicate the replacement time of the plug 230 by causing a color change upon contact with the liquid. Cobalt chloride paper may be used as an example of such indicators 290 and 290 '. At this time, the filter casing 240 may be formed of a transparent material so that the inside thereof can be seen, or a transparent window may be provided at least in part thereof.

Therefore, the user can know the replacement timing of the plug 230 by checking the colors of the two indicators 290 and 290 'from the outside. For example, if the color of the rear indicator 290 has changed, the plug 230 is not functioning properly, so the plug must be replaced immediately.

As shown in Figs. 4-7, the drug infusion device (100 of Fig. 1) further comprises a disc 276. Fig.

The disk 276 closes the front portion of the filter casing 240 as a whole and a plurality of holes 278 are formed to penetrate the disk 276. The holes 278 are equally spaced around the outer periphery of the disk 276.

Such a disc 276 prevents the liquid flowing backward from flowing into the filter casing 240 and uniformly injects the liquid flowing backward so that the plug 230 can effectively filter the liquid, Can be limited to the direction in which they are formed.

The disk 276 is sandwiched between the front jaws 259 'and 269' and the rear jaws 259 and 269 formed on the inner circumferential surface of the filter casing 240.

6 and 7, in the lower filter casing 250, the gap 258 between the front jaw 259 'and the rear jaw 259 is formed larger than the thickness of the disk 276, The disk 276 can be allowed to move in the front-rear direction. The disc 276 may be in close contact with the front jaw 259 'when moving forward, and may be in close contact with the rear jaw 259 when moving backward.

At this time, the height of the front jaw 259 'is set to a height that can block the hole 278 of the disc 276 when the disc 276 is brought into close contact with the front jaw 259', and the height of the rear jaw 259 Even if the disc 276 is brought into close contact with the rear jaw 259, the height of the disc 276 can not be blocked.

Accordingly, as shown in FIG. 7, as the plug 230 expands to the maximum extent to press the disk 276, the disk 276 is brought into close contact with the front jaw 259 '. At this time, the front jaw 259 'blocks the hole 278 of the disk 276 so that the gas can not flow through the hole 278.

This structure is equally applied to the front jaw 269 'and the rear jaw 269 of the upper filter casing 260.

The filter casing 240 having the above-described structure can not transmit sound pressure well when the life of the plug 230 is shortened. Therefore, the user can easily recognize that the replacement time of the plug 230 has passed without checking the indicators 290 and 290 '.

3 to 5, the drug injection device (100 of FIG. 1) further includes O-rings 280 and 280 '.

The O-rings 280 and 280 'are engaged with at least one of the inflow pipe 254 and the outflow pipe 256 and can block the gap between the drug injection device 100 (FIG. 1) and the filter casing 240. Accordingly, the sound pressure can be more efficiently transmitted to the inside of the filter casing 240, and the liquid flowing into the outlet (220 in FIG. 2) can be blocked immediately without passing through the plug 230 from the outside.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. But is not limited to the example.

100: drug injection device
110: a syringe
120: sucking
140: channel
142: conduit 144: conduit
210: inlet
220: Outlet
230: Plug
240: Filter casing
250: Lower filter casing
252: groove 253: step
254: inlet pipe 256: outlet pipe
258: clearance
259: rear jaw 259 ': front jaw
260: upper filter casing
262: groove 263: step
268: Clearance
269: rear jaw 269 ': front jaw
270: shield member
272: insertion hole 274: slit
276: Disk 278: Hole
280, 280 ': O-ring
290, 290 ': Indicator

Claims (9)

A syringe injected with a liquid is installed at one side of the syringe, a suction valve installed in front of the needle of the syringe for sucking the skin, a negative pressure generator for generating a negative pressure for sucking the skin, A drug injection device having a conduit connected to a sucker and having an inside sealed therein,
A filter casing that is installed while cutting a part of the channel and connecting the channels therebetween; And
And a plug installed inside the filter casing and made of a wet-swellable material and expanded when the filter casing is exposed to a liquid to close the space inside the filter casing,
When the negative pressure generating device is driven, gas in the sucker and the duct escapes through the filter casing to form a vacuum state. When the liquid flows into the filter casing, the plug expands, And closing the liquid by closing the liquid. The method according to claim 1,
And a shielding member installed inside the filter casing and dividing the space inside the filter casing into a front portion and a rear portion and having at least one slit,
Wherein the shielding member blocks the liquid in the front portion of the filter casing from flowing into the rear portion of the filter casing. 3. The method of claim 2,
Wherein the shielding member is ring-shaped, the outer circumferential surface of the shielding member is closely attached to the inner circumferential surface of the filter casing, the slit is formed along the inner circumferential surface of the shielding member,
Wherein the plug is cylindrical and inserted so as to be in close contact with an inner circumferential surface of the shield member,
Wherein the slit is normally open, and when the plug is exposed to the liquid, the slit is closed by the expanded volume. 4. The method according to any one of claims 2 and 3,
And a disk which is formed so that a front portion of the filter casing is entirely closed and a plurality of holes are formed to pass therethrough. 5. The method of claim 4,
Wherein the holes of the disk are formed at regular intervals along the outer circumference of the disk. 6. The method of claim 5,
Wherein the disk is sandwiched between a front jaw and a rear jaw formed on an inner peripheral surface of the filter casing,
Wherein a gap between the front jaw and the rear jaw is formed to be larger than a thickness of the disc so that the disc can be allowed to move in the forward and backward directions and can be brought into close contact with the front jaws in forward movement, May be in close contact with the rear jaw,
The height of the front jaw is set to a height at which the disc can be blocked when the disc is in close contact with the front jaw and the height of the rear jaw is set to a height at which the disc can not be blocked even if the disc is in close contact with the rear jaw Wherein the drug delivery device comprises: 4. The method according to any one of claims 2 and 3,
And an indicator installed in at least one of a front side and a rear side of the shielding member inside the filter casing and capable of indicating a replacement timing of the plug by causing a color change upon contact with the liquid. 8. The method of claim 7,
Wherein the filter casing is formed of a transparent material or has at least a transparent window. The method according to claim 1,
Further comprising an O-ring which is protruded from the bottom of the filter casing and is engaged with at least one of an inflow pipe and an outflow pipe connected to the pipeline, and closes a gap between the drug infusion device and the filter casing.

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