KR101672671B1 - an auto injector hand piece with ring shaped close contact cap connected to a suction needle member - Google Patents

an auto injector hand piece with ring shaped close contact cap connected to a suction needle member Download PDF

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Publication number
KR101672671B1
KR101672671B1 KR1020160025694A KR20160025694A KR101672671B1 KR 101672671 B1 KR101672671 B1 KR 101672671B1 KR 1020160025694 A KR1020160025694 A KR 1020160025694A KR 20160025694 A KR20160025694 A KR 20160025694A KR 101672671 B1 KR101672671 B1 KR 101672671B1
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KR
South Korea
Prior art keywords
annular
syringe
needle member
suction needle
skin
Prior art date
Application number
KR1020160025694A
Other languages
Korean (ko)
Inventor
김경원
유연옥
Original Assignee
김경원
유연옥
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Priority to KR1020160025694A priority Critical patent/KR101672671B1/en
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Publication of KR101672671B1 publication Critical patent/KR101672671B1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/48—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for varying, regulating, indicating or limiting injection pressure
    • A61M5/484—Regulating injection pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A61M2005/2006—Having specific accessories
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/07—General characteristics of the apparatus having air pumping means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A61M2205/3337—Controlling, regulating pressure or flow by means of a valve by-passing a pump
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/75—General characteristics of the apparatus with filters

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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

Disclosed is an auto-injector handpiece comprising: a housing having a syringe lengthily inserted therein, wherein the syringe includes a syringe body and a syringe plunger; a piston disposed to push and move the rear end of the syringe plunger; an actuator for forwardly moving the piston; a suction needle member connected with the front end of the syringe body, and having an injection needle and a concave part wrapping the injection needle; an air pipe path for connecting the concave part of the suction needle member with a vacuum pump; an air filter device installed in one side of the housing to be separated, and filtering foreign materials in air suctioned from the concave part in the middle of the air pipe path; and a circular closely placed cap coupled with the front side part of the suction needle member to be separated, made of a silicone material, and having a cutting edge part formed in the front side thereof to elastically change when being pressed on skin.

Description

An auto-injector handpiece having an annular close-up cap coupled to a suction needle member,

The present invention relates to an auto injector handpiece useful for automatically quantitatively injecting a liquid or gel injection material comprising a filler such as a lifting filler or a soft tissue expander filler, a bioactive agent or other biosynthetic material, More particularly, the present invention relates to a suction needle for a suction needle, and more particularly, to a suction needle for suctioning a suction needle around a suction needle of a suction needle member to naturally insert the suction needle provided in the suction needle member into the skin, An auto injector handpiece having an annular close-up cap which is engaged with a suction needle member so that the skin, such as skin on the scalp or forehead, can be closely adhered to the suction needle member by air suction force, Hand piece.

It is very common to inject vitality formulations and fillers. Usually, the bioactive agent and the filler are injected by hand using a conventional syringe of the type in which the plunger is manually reciprocating, i.e., a hypodermic syringe, with respect to a body having a neck on which the needle is inserted, do. However, since the syringe is designed to be ergonomically disadvantageous, there are many inconveniences in use. In addition, the conventional manual scanning method using a cylinder has a serious disadvantage that it is difficult to control the scanning speed and the handling of the syringe because of the need of the human force to push the injection material into the subject or the patient's body . In addition, in the conventional manual scanning method, there is a great possibility that a practitioner uses a syringe to apply a force in an excessive and unwanted direction in a process of pushing the injection material into a human body, thereby causing a great pain to the subject.

In contrast, conventionally, various types of auto injectors capable of automatically injecting a scanning substance using the power of a motor have been proposed for a fixed amount of scanning and a precisely controlled scanning speed. For example, Korean Patent Registration No. 10-1464342 discloses a technique of unloading a syringe installer, inserting a syringe into the syringe installer, and connecting the syringe installer to a main body including a motor. However, this technique takes a lot of time to disassemble and assemble the syringe installer, which causes a lot of inconvenience, and the economical efficiency is greatly reduced. Korean Patent Laid-Open Nos. 10-2011-0037979, EP0362484 and FR2622457 disclose an auto injector handpiece of a pinion-rack mechanism type including a pinion connected to a motor and a rack used as a piston for applying a force for scanning do. However, such an auto injector handpiece has a problem that it is impossible to move the piston finely and precisely because the reciprocating motion of the piston depends on the gear tooth form of the pinion and the rack. In addition, such an auto injector handpiece can not use a conventional syringe and incorporates a structure similar to that of a conventional syringe, which is considerably less practical and economical. Further, since the shaft and the rack of the motor having the pinion have to be arranged in a direction intersecting with each other, a compact structure can not be realized. In addition, the prior art is disadvantageous in that it is inconvenient to perform the procedure and it is difficult to perform a reliable operation because the syringe needle is inserted into the skin by human force and then the syringe is operated to press the filler.

In addition, conventionally, a vacuum suction force is generated in the suction needle member of the auto injector handpiece contacting the skin, and the skin is pulled by the vacuum suction force so that the injection needle of the suction needle member is automatically inserted into the skin, An auto injector handpiece technique has been proposed in which the injections are actuated to inject the injected material into the skin. However, in the case of skin such as bumpy skin, the skin is well pulled by the vacuum suction force so that the injection needle of the suction needle member can enter the skin well, but the skin of the scalp or forehead is not fleshy and does not come into close contact with the suction needle member even by the vacuum suction force This is one of the major causes of malfunction of the auto injector handpiece.

Korean Patent No. 10-1464342 Korean Patent Publication No. 10-2011-0037979 EP0362484 FR2622457

SUMMARY OF THE INVENTION [0006] Accordingly, an object of the present invention is to provide a suction needle assembly for a suction needle, which generates suction air around a needle of a suction needle member so that a needle provided in the suction needle member is naturally inserted into the skin, An injector handpiece for injecting injected material onto a skin through a needle, the injector handpiece comprising: an annular close-up cap which is coupled to a suction needle member so as to be in close contact with a suction needle member by air suction force, And an injector for injecting the fuel.

According to one aspect of the present invention, an auto injector handpiece includes a housing into which a syringe including a syringe body and a syringe plunger is charged; A piston arranged to push and move the rear end of the syringe plunger; An actuator for driving the piston forward; A suction needle member connected to a front end of the syringe body and having a syringe needle and a recess surrounding the syringe needle; An air duct connecting the concave portion of the suction needle member and the vacuum pump; An air filter device removably installed at one side of the housing to filter out foreign matter in the suction air sucked from the recess in the middle of the air duct; And an annular abutment cap detachably coupled to the front portion of the suction needle member, the annular abutment cap being formed of a silicone material and having an anteriorly proximal portion elastically deforming when pressed against the skin.

According to another aspect of the present invention, there is provided a suction device for an auto injector handpiece including at least one injection needle, an annular wall defining a concave portion surrounding the injection needle, and a connection portion connected to the air duct, There is provided an annular close cap which is coupled to a needle member, the annular close cap being formed of a material having viscoelasticity and having an annular groove which is inserted into the annular wall at the rear, and an annular tip .

According to one embodiment, the tip end portion includes an inclined surface extending forward from the inner peripheral surface toward the outer peripheral surface, and the thickness gradually decreases by the inclined surface.

According to one embodiment, the annular abutment cap further comprises an inner abutment surface portion which is formed with a greater thickness than the annular abutment portion at the rear side of the annular abutment portion and which is less deformed than the annular abutment portion when in close contact with the skin.

According to the present invention, after suction air is generated around the injection needle of the suction needle member so that the injection needle provided in the suction needle member is naturally inserted into the skin, the syringe is operated to inject the injection substance An annular close cap made of a viscoelastic material is detachably coupled to a suction needle member so that even a skin such as skin on the scalp or forehead can be easily sucked into the suction needle member by the air suction force. Thereby solving the problem of malfunction due to poor skin adhesion of the auto injector handpiece.

1 is a cross-sectional view illustrating a handpiece for an auto injector according to an embodiment of the present invention.
2 is a perspective view showing a suction needle member of a handpiece for an auto injector to which an annular close cap is coupled.
3 is a front view showing a suction needle member of a handpiece for an auto injector to which an annular close cap is coupled.
4 is a cross-sectional view taken along line AA in Fig.
5 is a cross-sectional view taken along line BB in Fig.
6 is an exploded sectional view showing the annular close-up cap and the suction needle member in a disassembled state.
7 is a side sectional view showing an air filter device according to an embodiment of the present invention.
8 is a cross-sectional view of the air filter device cut along the line II in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings and the description thereof are intended to aid those of ordinary skill in the art in understanding the present invention. Accordingly, the drawings and description are not to be construed as limiting the scope of the invention.

2 is a perspective view showing a suction needle member of a handpiece for an auto injector to which an annular close cap is coupled, and Fig. 3 is a perspective view showing a suction needle member for an auto injector for an auto injector according to an embodiment of the present invention. FIG. 4 is a cross-sectional view taken along AA of FIG. 3, FIG. 5 is a cross-sectional view taken along line BB of FIG. 3, and FIG. Is an exploded sectional view showing the annular close-up cap and the suction needle member in a disassembled state.

As shown in FIG. 1, the auto injector handpiece 1 is used for injecting a subcutaneous injector, that is, a injection material such as a filler filled in the syringe body 21 by operating a conventional syringe 2 do. As is well known, the syringe 2 includes a hollow syringe body 21 having a neck at the front end thereof, and a syringe plunger 22 fitted to the syringe body 21 so as to be reciprocatable do.

The auto injector handpiece 1 includes a housing 10 having a cut-away portion 11 formed at an upper portion thereof for filling the syringe 2 in a first tilted state and having a handle and a trigger at a lower portion thereof, A front syringe holder 18 coupled to a front end of the housing 10 for holding the syringe 2 horizontally with a syringe body 21 of the loaded syringe 2 inserted therein, A piston 30 disposed so as to be in contact with a rear end of the syringe plunger 22 while having the same center axis as the syringe 2 loaded in the housing 10; An actuator 40 for linearly driving the piston 30 forward; a suction needle member 60 connected to the front end of the syringe 2 at the front of the housing and connected to the air suction line AL; Is detachably coupled to the front portion of the suction needle member 60, Do side to increase adhesion to the skin is not age as in the skin comprises an annular contact cap 100 of the viscoelastic material is provided so as to close the suction force decreases with respect to the skin without these years.

The auto injector handpiece 1 further includes a recess 62 that defines the periphery of the injection needles 61 at the front end of the suction needle member 60 connected to the air suction line A.L. The auto injector handpiece 1 includes a first air hose 71 whose one end is detachably connected to a connection portion 63 provided at one side of the suction needle member 60, An air filter device 80 detachably installed below the housing 10 of the air filter device 80 and connected to the other end of the first air hose 71, And a second air hose 72 and a third air hose 73 connecting between vacuum pumps (not shown) provided in a main body (not shown) of the system. And a filter mounting portion for allowing the air filter device 80 to be detachably mounted is provided in the lower portion of the housing 10. The second air hose 72 is connected to the air filter unit 80 at one end in the housing 10 and at the other end to the outside of the housing 10 at the rear end of the housing 10. [ 3 air hose (73). The third air hose 73 may extend outwardly with the electric cable.

The suction needle member 60 is provided with a recess 62 surrounding the periphery of the injection needles 61 and a connecting portion 63 connected to the first air hose 71 at one side thereof . Needless to say, the connection portion 63 and the concave portion 62 communicate with each other. An annular close cap 100 of a viscoelastic material is coupled to the front face of the suction needle member 60. Even when the annular close cap 100 contacts the skin without skin such as scalp or forehead, The concave portion 62 of the suction needle member 60 defined inside is reliably sealed in an adhered state to the skin. When the vacuum pump (not shown) is driven and the air suction line AL is closed by a solenoid valve (not shown) installed in the main body, the skin is sucked into the above-mentioned recessed portion 62, The needles 61 of the member 60 can be automatically inserted into the skin.

2 to 6, the suction needle member 60 includes a main flow passage 601 connected to the neck of the syringe 2 and a plurality of branch flow passages 601 branched from the main flow passage 601 602, and a needle 61 is provided at the end of each of the plurality of branch channels 602. The liquid injected material from the syringe 2 is injected into the skin through the injection needle 61 through the main flow path 601 and the plurality of branch flow paths 602 in order. The suction needle member 60 is configured such that the concave portion 62 is connected to the connecting portion 63 through the connecting hole 62b formed in the annular wall 62a defining the concave portion 62 do. The connection portion 63 is connected to the first air hose 71 which is a part of the air line A.L (see Fig. 1).

The annular close cap 100 is detachably coupled to the suction needle member 60 and is formed of a viscoelastic material, in particular, a silicone material, and has an annular groove 62a, And includes an annular tapered portion 110 including a sloped surface 112 extending from the inner circumferential surface toward the outer circumferential surface at the front side. The annular tip portion 110 is gradually outwardly directed by the inclined surface 112 while gradually decreasing in thickness in a direction approaching the skin, so that elastic deformation can be performed well when the skin is brought into close contact with the skin. The annular abutment cap 100 also includes an inner abutment surface 120 formed on the back side of the annular abutment 110 to a greater thickness than the annular abutment 110, Unlike the annular pointed tip 110, when the annular abutment cap 100 is brought into close contact with the skin as a surface portion that comes into contact with the skin with little or no deformation. If only the annular annular tip 110 is pressed against the skin, a reliable adhesion between the skin and the annular abutment cap 100 would be rather hindered.

The annular close cap 100 includes an outer lid portion 102 and an inner lid portion 103 that define the annular groove 101. The outer lid portion 102 is formed to have an inner lid portion 103 Thereby ensuring a more reliable connection between the annular abutment cap 100 and the suction needle member 60. [

1, an air suction line AL connecting the recess 62 of the suction needle member 60 and the vacuum pump provided in the external body is connected to one side connecting portion 63 of the suction needle member 60, A first air hose 71 detachably connected to the air filter device 80 and detachably connected to the air filter device 80 mounted on the filter mounting part in the housing 10 at the other end, A second air hose 72 extending from the rear end of the housing 10 to the rear end of the housing 10 while being connected to the second air hose 72, And a third air hose 73 connected in series.

The syringe 2 is held horizontally in the housing 10 and is connected to the outside through the front syringe holder 18 in which the syringe body 21 is inserted. Further, the suction needle member 68 is coupled to the neck front end of the saddle-shaped body 21 through the front syringe holder 18. It should be noted that although a multi-type suction needle member including a plurality of injection needles 61 is used as the suction needle member 60 in the figure, a single suction needle member including one injection needle may be used.

The piston (30) has a screw hole (31) formed along the center axis. The actuator 50 includes a screw shaft 53 having a center axis identical to that of the piston 30 and coupled to the screw hole 31 in a screwed manner, And a motor driving unit 52 for driving the motor. The motor drive unit 52 and the screw shaft 53 by the motor are located on the inner rear side of the housing 10 and on the same central axis as the piston 30. A piston 30 for pushing the syringe plunger 22 to inject the injected substance into the syringe 2 and a piston 30 connected to the piston 30 in a screw- The screw shaft 53 and the motor drive unit 52 for rotating the screw shaft 53 all have the same central axis and the syringe plunger 22 is pushed in the axial direction The injector handpiece 1 contributes to enhancement of precision and reliability of operation of operating the injector handpiece 2 and also contributes greatly to realizing a compact auto injector handpiece 1 by reducing the housing volume of the injector handpiece 1. [

It is preferable that the piston 30 is not allowed to move in any direction other than the axial direction. To this end, the guide structure G for more reliably guiding the linear movement of the piston 30 is required do. The guide structure G is formed inside the housing 10 to correspond to the outer shape of the piston 30 and the outer shape.

FIG. 7 is a side sectional view showing the air filter device according to an embodiment of the present invention, and FIG. 8 is a sectional view showing the air filter device cut along the line I-I in FIG.

7 and 8, an air filter device 80 according to an embodiment of the present invention is detachably mounted to a filter mounting portion provided in a shape of a long hole in a front lower portion of a housing 10 (see FIG. 1) And a tubular outlet connection portion 811 provided at the front side and connected to the second air hose 72 (see FIG. 1) or a connector thereof, the tubular inlet connection portion 811 connected to the first air hose 71 And a filter material 82 disposed on the inner rear side of the filter housing 81. The filter housing 81 includes a filter housing 82, In addition, a foreign matter filtering structure is formed in the front of the inside of the filter housing 81 so as to filter out foreign matter in the air sucked from the upstream side of the filter material 82 and filter it. The filter material 82 is preferably a micro filter.

The front space of the filter housing 81 is divided into a lower chamber LC and an upper chamber UC by a diaphragm 85 having a slit- And the lower chamber LC is directly connected to the tubular inlet connection part 811 and the upper chamber UC is directly connected to the rear space in the filter housing 81 in which the filter material 82 is installed do.

Accordingly, a considerable amount of the foreign matter in the suction air flowing into the air filter device 80 through the first air hose 71 (see FIG. 1) among blood and / or residual foreign substances or various foreign substances present in the skin is discharged to the lower chamber LC And then passes through the filtering partition wall 85 and does not enter the upper chamber UC, but remains in the lower chamber LC. On the other hand, the suction air is further sucked through the upper chamber UC through the filtering hole 86 formed in the filtering partition wall 85 to remove the foreign matter from the filter material 82 in the rear space, ). ≪ / RTI > Particularly, the foreign matter filtering structure including the filtering partition 85 and the filtering hole 86 is particularly suitable for the removal of foreign objects such as blood or residual drugs in the suction air. This is because, in the case of a foreign substance having a high specific gravity, if it is clogged by the diaphragm 82, the diaphragm will sink downward without passing through the diaphragm hole 86 despite a large suction force. Most of the foreign matter, which can significantly shorten the life of the filter material 82, such as blood and / or residual medicines, is separated in advance from the upstream side by the foreign matter filtering structure including the filtering partition 85 and the filtering hole 86, The life of the filter material 82 can be greatly increased. The filter material 82 may be fit tightly within the tubular outlet connection 812.

The filter housing 81 has a rear case 81a having a tubular outlet connection portion 812 and a tubular inlet connection portion 811. The filter housing 81 is connected to the rear case 81a in a cap shape And a front case 81b. Both the rear case 81a and the front case 81b are preferably made of a transparent PP material.

The tubular inlet connection part 811 protrudes forward from the lower part of the front part of the front case 81b and the tubular outlet connection part 812 protrudes rearward from the upper part of the rear part of the rear case 81a. A part of the inner space of the tubular outlet connection part 81a becomes a rear space into which the filter material 82 is inserted.

The above-described filtering barriers 85 include a first partition wall portion 851 extending rearward from the inner surface of the front case 81b and a second partition wall portion 851 extending forward from the inner surface of the rear case 81a. 852 < / RTI > The filtering hole 86 is formed between the first partition wall 851 and the second partition wall 852. According to the present embodiment, the second partition 852 is positioned higher than the first partition 851, which contributes to increase the efficiency of filtration of the foreign object. The distal end of the first partition wall portion 851 may extend longer than the distal end of the second partition wall portion 852 or the distal end of the second partition wall portion 852 may extend beyond the distal end of the first partition wall portion 852 It is also possible to increase the efficiency of filtration by providing a section that overlaps with each other.

The front case 81b and the rear case 81a are disengaged from each other, so that the foreign matter that is stuck in the lower chamber L.C can be easily removed. The front case 81b integrally includes an insertion protrusion 89 which is fitted into the inner surface of the rear case 81a.

60: Suction needle member 61: Needle
62: concave portion 63: connection portion
62a: annular wall 601, 602:
100: annular close cap 110: annular tip portion
112: sloped surface 120: inner side surface portion
102: outer lid part 103: inner lid part

Claims (4)

A housing in which a syringe including a syringe body and a syringe plunger is charged;
A piston arranged to push and move the rear end of the syringe plunger;
An actuator for driving the piston forward;
A suction needle member connected to a front end of the syringe body and having a suction needle and a recess surrounding the syringe needle and an annular wall defining the recess;
An air duct connecting the concave portion of the suction needle member and the vacuum pump;
An air filter device removably installed at one side of the housing to filter out foreign matter in the suction air sucked from the recess in the middle of the air duct; And
And an annular close cap detachably coupled to a front portion of the suction needle member and formed of a silicone material and having an annular tip portion that elastically deforms when the skin is pressed against the skin,
Wherein the annular tip portion includes an inclined surface that extends forward toward the outer circumferential surface in the vicinity of the inner circumferential surface, the thickness gradually decreases by the inclined surface, and is formed thicker than the annular tip portion at the rear side of the annular tip portion, And an inner lid portion defining an annular groove to be inserted into the annular wall and an inner lid portion, wherein the outer lid portion extends longer than the inner lid portion, Wherein the auto injector comprises: An injector according to any one of the preceding claims, further comprising: an annular close cap coupled to a suction needle member of the auto injector handpiece, the annular close cap defining an indentation surrounding the needle, As a result,
And is formed of a material having viscoelasticity,
And an annular groove inserted into the annular wall at the rear,
The front portion includes an annular tip portion which is pressed against the skin and elastically deformed,
Wherein the annular tip portion includes an inclined surface extending forward from an inner peripheral surface toward an outer peripheral surface, the thickness gradually becoming smaller by the inclined surface,
An inner contact surface portion formed on the rear side of the annular tip portion and having a greater thickness than the annular tip portion and being deformed less than the annular tip portion when brought into close contact with the skin, and an outer lid portion and an inner lid portion defining the annular groove And the outer lid portion extends longer than the inner lid portion. delete delete
KR1020160025694A 2016-03-03 2016-03-03 an auto injector hand piece with ring shaped close contact cap connected to a suction needle member KR101672671B1 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101757759B1 (en) 2016-07-12 2017-07-17 주식회사 로보맥스 A medicament injection apparatus
KR101862679B1 (en) * 2018-05-03 2018-05-31 박영오 Syringe kit for treating keloids
WO2019199008A1 (en) * 2018-04-10 2019-10-17 봄텍전자 주식회사 Replaceable filter provided between multi-needle module and automatic treatment device
CN114344626A (en) * 2022-01-24 2022-04-15 中国人民解放军空军军医大学 Automatic exhaust insulin syringe
CN114748780A (en) * 2022-04-13 2022-07-15 济南国科医工科技发展有限公司 Small-sized water laser needle
CN116139366A (en) * 2022-12-07 2023-05-23 华熙生物科技股份有限公司 Water light injection needle
KR102539629B1 (en) * 2022-09-29 2023-06-02 주식회사 셀라메디칼 Handpiece

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EP0362484A2 (en) 1988-10-05 1990-04-11 B. Braun Melsungen AG Injection device
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KR101757759B1 (en) 2016-07-12 2017-07-17 주식회사 로보맥스 A medicament injection apparatus
WO2019199008A1 (en) * 2018-04-10 2019-10-17 봄텍전자 주식회사 Replaceable filter provided between multi-needle module and automatic treatment device
KR101862679B1 (en) * 2018-05-03 2018-05-31 박영오 Syringe kit for treating keloids
CN114344626A (en) * 2022-01-24 2022-04-15 中国人民解放军空军军医大学 Automatic exhaust insulin syringe
CN114344626B (en) * 2022-01-24 2024-01-09 中国人民解放军空军军医大学 Insulin syringe capable of automatically exhausting
CN114748780A (en) * 2022-04-13 2022-07-15 济南国科医工科技发展有限公司 Small-sized water laser needle
KR102539629B1 (en) * 2022-09-29 2023-06-02 주식회사 셀라메디칼 Handpiece
CN116139366A (en) * 2022-12-07 2023-05-23 华熙生物科技股份有限公司 Water light injection needle

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