KR101443687B1 - Safety syringe with filter element - Google Patents

Safety syringe with filter element Download PDF

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Publication number
KR101443687B1
KR101443687B1 KR1020140091701A KR20140091701A KR101443687B1 KR 101443687 B1 KR101443687 B1 KR 101443687B1 KR 1020140091701 A KR1020140091701 A KR 1020140091701A KR 20140091701 A KR20140091701 A KR 20140091701A KR 101443687 B1 KR101443687 B1 KR 101443687B1
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KR
South Korea
Prior art keywords
filter member
needle fixing
injection
gasket
fixing tube
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KR1020140091701A
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Korean (ko)
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백우인
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백우인
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Priority to KR1020140091701A priority Critical patent/KR101443687B1/en
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Publication of KR101443687B1 publication Critical patent/KR101443687B1/en
Priority to PCT/KR2015/003633 priority patent/WO2015163615A1/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
    • A61M5/31—Details
    • A61M5/3145—Filters incorporated in syringes
    • 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
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/165—Filtering accessories, e.g. blood filters, filters for infusion liquids
    • 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
    • A61M2205/27—General characteristics of the apparatus preventing use
    • A61M2205/276—General characteristics of the apparatus preventing use preventing unwanted use
    • 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

The present invention relates to a safety syringe equipped with a filter member by which ampoule pieces included in a syringed liquid are filtered when the syringed liquid from an ampoule is filled in the syringe so that the ampoule pieces are not injected in the human body when being syringed. The safety syringe is equipped with a filter member (200) closely installed in a syringe needle fixing pipe (100) coupled with the front end of a cylinder (1) having a piston (2) installed therein so that foreign materials included in a syringed liquid can be filtered. In the front end of the filter member, a cyclic external flange unit (310) which is closely adhered along the inner circumferential surface of the syringe needle fixing pipe and a gasket (300) equipped with a syringed liquid feeding unit (320) which is elastically opened by means of inner pressure reduced in the syringe needle fixing pipe when the piston is backwardly moved and forms a path for discharging the syringed liquid fed in the syringe needle fixing pipe towards the filter member are inserted. A through-hole (213) which is connected with a gap between the inner circumferential surfaces of the gasket and syringe needle fixing pipe is formed at the edge of the filter member. A first groove unit (120) which is closed by means of the front end of the gasket, is opened when the gasket is forwardly pushed by means of discharge pressure from the syringed liquid discharged towards the gap through the through-hole of the filter member, and forms a syringed discharging path for connecting the gap with the front end of the syringe needle fixing pipe formed on the inner circumferential surface of the syringe needle fixing pipe.

Description

필터부재를 구비한 안전주사기{Safety syringe with filter element}[0001] Safety syringe with filter element [0002]

본 발명은 앰플의 주사액을 주사기에 충진할 때 주사액에 포함된 앰플 조각들이 필터링되어 주사시 인체로 유입되지 않도록 하는 필터부재를 구비한 안전주사기에 관한 것이다.The present invention relates to a safety syringe having a filter member for preventing the pieces of ampoule contained in an injection liquid from being filtered and being introduced into a human body during injection when the injection liquid of the ampoule is filled in the syringe.

일반적으로 앰플에 담긴 주사액을 체내에 주사하기 위해서는 도 1에 도시된 바와 같이, 먼저 주사액이 담겨진 앰플(A:Ampoule)의 상단을 깨뜨려 개봉하고, 개봉된 부분으로 주사바늘(3)을 인입시킨 후 피스톤(2)을 후퇴시켜 앰플(A) 내의 주사액이 실린더(1)의 내부로 충진되도록 한 다음, 주사바늘(3)을 환자의 환부에 찔러 넣고 피스톤(2)을 전진시켜 실린더(1) 내부에 있던 주사액이 주사바늘(3)을 통해 환자에게로 투여되도록 한다.Generally, in order to inject an injection solution contained in an ampule into a body, as shown in FIG. 1, an ampoule (A: Ampoule) containing the injection solution is first broken and opened, and the injection needle 3 is drawn into the opened part The piston 2 is moved back so that the injection liquid in the ampule A is filled into the cylinder 1 and then the injection needle 3 is pushed into the affected part of the patient and the piston 2 is advanced, To be administered to the patient through the injection needle (3).

그러나, 앰플(A)의 상단을 깨뜨려 개봉하게 되면 유리파편이 비산되면서 그 일부가 앰플(A)의 내부로 들어가게 되고, 앰플(A)의 내부로 들어간 유리파편이 주사액이 실린더 내부로 충진될 때 주사기의 내부로 혼입되어 주사액과 함께 체내로 투여되게 되므로 환자에게 치명적인 악영향을 미치게 된다.However, when the upper end of the ampule A is opened, the glass fragments are scattered and a part of the glass fragments is introduced into the inside of the ampule A. When the glass fragments which have entered the inside of the ampule A are filled into the cylinder It is mixed into the inside of the syringe and is injected into the body together with the injection solution, thereby giving a fatal adverse effect to the patient.

도 2a에 도시된 바와 같이, 이러한 문제점을 개선하기 위하여, 국내특허등록 제10-981586호(이하 "선행특허"라 함)에서는 필터(11)가 내장된 필터팁(10)을 실린더(1)에 끼운 다음 주사액을 실린더(1)에 충진함으로써 주사액에 포함된 유리파편이 필터(11)에 의해 필터링되도록 하는 기술이 제안되었다.2A, in order to solve such a problem, a filter tip 10 with a filter 11 is attached to a cylinder 1 in a domestic patent registration No. 10-981586 (hereinafter referred to as "prior patent"), And the injection liquid is filled in the cylinder 1, so that the glass fragments contained in the injection liquid are filtered by the filter 11.

그러나, 상기한 선행특허는 실린더(1)의 내부로 주사액을 충진할 때는 필터팁(10)을 끼우고, 주사기의 주사액을 환자에게 투여할 때는 필터팁(10)을 제거한 후에 도 2b에 도시된 바와 같이 주사바늘 고정관(4)을 주사기에 결합하여야 하므로, 주사액의 충진 및 투여과정이 번거로워 사용상에 불편한 점이 많았다.However, in the above-mentioned prior art, the filter tip 10 is inserted to fill the injection fluid into the cylinder 1, and when the injection fluid of the injector is administered to the patient, after removing the filter tip 10, The injection needle fixing tube 4 must be connected to the syringe as described above, so that filling and dosing of the injection solution is troublesome and inconvenient in use.

특히, 종래에는 필터팁의 재사용이 가능하므로 위생 및 안전상의 문제점이 매우 컸다.Particularly, since the filter tip can be reused in the past, problems in terms of hygiene and safety have been great.

본 발명은 상기한 문제점들을 해결하기 위해 안출된 것으로서, 사용중 필터팁을 교체하지 않아도 되는 필터부재를 구비한 안전주사기를 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION It is an object of the present invention to provide a safety syringe having a filter member that does not require replacement of a filter tip during use.

또한, 본 발명은 재사용이 불가능한 필터부재를 구비한 안전주사기를 제공하는데 그 목적이 있다.It is another object of the present invention to provide a safety syringe having a filter member that can not be reused.

상기 목적을 달성하기 위해, 본 발명은 주사액에 포함된 이물질을 필터링하도록 피스톤이 설치된 실린더의 전단에 결합되는 주사바늘 고정관 내부에 긴밀히 설치된 필터부재를 구비한 안전주사기에 있어서, 상기 필터부재의 전단에 상기 주사바늘고정관의 내주면을 따라 긴밀히 밀착되는 환형의 외향플랜지부와 피스톤이 후방으로 이동할 때 저하되는 주사바늘고정관의 내부 압력에 의해 탄성개방되어 주사바늘고정관의 내부로 유입된 주사액을 필터부재로 배출시키는 유로를 형성시키는 주사액유입부를 구비한 가스켓이 끼워지고, 상기 필터부재의 가장자리에는 상기 가스켓과 주사바늘고정관의 내주면 사이의 틈새와 연통되는 제1관통공이 형성되며, 상기 주사바늘고정관의 내주면에 상기 가스켓의 전단에 의해 폐쇄되어 있다가 필터부재의 제2관통공을 통해 상기 틈새로 배출되는 주사액의 배출압력에 의해 가스켓이 전방으로 밀려 이동할 때 개방되면서 상기 틈새와 주사바늘고정관의 전단을 연통시키는 주사액배출유로를 형성시키는 제1홈부가 형성된 것을 특징으로 한다.In order to accomplish the above object, the present invention provides a safety syringe having a filter member tightly installed in a needle fixing tube to be coupled to a front end of a cylinder provided with a piston for filtering foreign matter contained in an injection solution, An annular outward flange portion closely in close contact with the inner circumferential surface of the injection needle fixing tube and an inner pressure of the injection needle fixing tube which is lowered when the piston moves backward to discharge the injection solution introduced into the injection needle fixing tube into the filter member Wherein a first through hole communicating with a gap between the gasket and an inner circumferential surface of the injection needle fixing tube is formed at an edge of the filter member and a second through hole is formed in the inner circumferential surface of the injection needle fixing tube, The gasket is closed by the front end of the gasket, And a first groove part is formed which is opened when the gasket is pushed forward due to the discharge pressure of the injection liquid discharged into the gap through the through hole to form the injection liquid discharge passage communicating the gap and the front end of the injection needle fixing tube.

또한, 상기 필터부재는 서로 연통되게 형성된 전방개구와 후방개구로 이루어진 몸체부와, 상기 후방개구에 부착되어 상기 후방개구를 통해 주사바늘내주면의 내부로 유입되는 주사액에 포함된 이물질을 걸러주는 필터로 구성될수 있다.The filter member may include a body portion having a front opening and a rear opening formed to communicate with each other, and a filter attached to the rear opening and filtering the foreign substances contained in the injection liquid flowing into the inner surface of the needle through the rear opening. .

이 경우, 상기 몸체부의 후단에는 외주면을 따라 환형의 돌출부가 형성되고, 상기 주사바늘고정관의 내주면에는 상기 돌출부에 대응되는 제2홈부가 형성되어 상기 필터부재가 주사바늘고정관의 내측에서 전후로 유동됨을 방지하도록 하는 것이 바람직하다.In this case, an annular protrusion is formed along the outer circumferential surface at the rear end of the body portion, and a second groove portion corresponding to the protrusion is formed on the inner circumferential surface of the injection needle fixing tube to prevent the filter member from flowing back and forth from the inside of the injection needle fixing tube .

또한, 상기 주사액유입부는 상기 가스켓의 전단 중앙에 후방을 향해 중앙으로 수렴하게 돌출형성된 수렴부와 상기 수렴부의 중앙에 형성된 절개선을 구비할 수 있다.In addition, the injection liquid inflow portion may include a convergent portion formed at the center of the front end of the gasket so as to converge toward the center toward the rear and an incision formed at the center of the convergent portion.

상기와 같이 구성된 본 발명은 실린더 내부로 주사액이 충진될 때에는 필터부재의 전단에 끼워진 가스켓에 형성된 상기 주사액유입부가 주사액유입압력에 의하여 개방되면서 주사액의 필터링이 이루어지게 되고, 주사시에는 주사액 배출압력으로 필터부재가 전방으로 이동함에 따라 제2관통공이 개방되면서 주사액배출유로가 형성된다.In the present invention configured as described above, when the injection liquid is filled into the cylinder, the injection liquid inflow part formed in the gasket fitted to the front end of the filter member is opened by the inflow pressure of the injection liquid, and the injection liquid is filtered. As the filter member moves forward, the second through hole is opened to form the injection liquid discharge passage.

따라서, 본 발명은 종래와 같이 사용 중 필터팁을 교체하지 않아도 주사가 이루어지게 되므로 사용상의 편리함이 극대화되는 효과가 있다.Therefore, the present invention has the effect of maximizing convenience in use since the injection is performed without replacing the filter tip during use.

아울러, 본 발명은 일단 사용한 주사기는 가스켓이 전방으로 이동하여 제1홈부가 개방된 상태이므로 주사기를 재사용하게 될 경우 주사액이 필터부재를 경유하지 않고 제1홈부와 제1관통공을 통해 그대로 실린더 내부로 유입된다. 따라서, 주사액의 필터링이 전혀 이루어지지 않게 되므로 주사기의 재사용이 불가능하다는 효과가 있다.In addition, according to the present invention, once the syringe is used, since the gasket moves forward and the first groove is opened, when the syringe is to be reused, the injection liquid does not pass through the filter member but passes through the first groove and the first through- Lt; / RTI > Therefore, since the injection solution is not filtered at all, there is an effect that the syringe can not be reused.

도 1은 일반적인 주사기를 나타내는 도면.
도 2는 필터부재를 구비한 종래의 안전주사기의 사용상태단면도.
도 3은 본 발명에 따른 필터부재를 구비한 안전주사기의 분해사시도.
도 4는 본 발명을 구성하는 필터부재의 분해사시도.
도 5는 본 발명을 구성하는 가스켓의 사시도.
도 6은 본 발명에 따른 필터부재를 구비한 안전주사기의 요부단면도로서, 주사바늘을 통해 주사액이 주사바늘결합관 내부로 유입되면서 필터링되는 상태를 나타내는 도면.
도 7은 본 발명에 따른 필터부재를 구비한 안전주사기의 요부단면도로서, 실린더에 충진된 주사액이 주사바늘을 통해 배출되는 상태를 나타내는 도면.1 shows a typical syringe;
2 is a sectional view of a conventional safety syringe with a filter member in use;
3 is an exploded perspective view of a safety syringe with a filter member according to the present invention;
4 is an exploded perspective view of a filter member constituting the present invention.
5 is a perspective view of a gasket constituting the present invention.
FIG. 6 is a cross-sectional view showing a principal part of a safety syringe with a filter member according to the present invention, in which the injection liquid is filtered while being injected into the needle coupling tube through the injection needle;
FIG. 7 is a cross-sectional view of a safety syringe with a filter member according to the present invention, showing a state in which an injection liquid filled in a cylinder is discharged through a needle. FIG.

본 발명의 특징 및 이점들은 첨부도면에 의거한 다음의 바람직한 실시예에 대한 상세한 설명으로 더욱 명백해질 것이다. 이에 앞서, 본 명세서 및 청구범위에 사용된 용어나 단어는 발명자가 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.The features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims are to be interpreted in accordance with the technical idea of the present invention based on the principle that the inventor can properly define the concept of the term in order to explain his invention in the best way. It must be interpreted in terms of meaning and concept.

도 3 내지 도 6에 도시된 바와 같이, 본 발명의 필터부재를 구비한 안전주사기는 실린더(1)와, 상기 실린더(1)의 내부에 전후 이동이 가능하도록 끼워진 피스톤(2)과, 상기 실린더(1)의 전단에 결합되는 주사바늘 고정관(100)과, 주사액에 포함된 이물질을 필터링하도록 상기 주사바늘 고정관(100)의 내부에 설치되는 필터부재(200)를 기본적으로 구비한다.3 to 6, a safety syringe having a filter member according to the present invention includes a cylinder 1, a piston 2 fitted in the cylinder 1 so as to be movable back and forth, An injection needle fixing tube 100 coupled to the front end of the injection needle 1 and a filter member 200 installed inside the injection needle fixing tube 100 to filter the foreign substances contained in the injection solution.

상기 필터부재(200)는 서로 연통되게 형성된 전방개구(201)와 후방개구(202)로 이루어진 몸체부(210)와, 상기 후방개구(202)에 부착되어 상기 후방개구(202)를 통해 주사바늘(3) 내주면의 내부로 유입되는 주사액에 포함된 이물질을 걸러주는 필터(220)로 구성된다.The filter member 200 includes a body portion 210 having a front opening 201 and a rear opening 202 formed to communicate with each other and a body portion 210 attached to the rear opening 202, And a filter 220 for filtering the foreign substances contained in the injection liquid flowing into the inside of the inner circumferential surface.

상기 몸체부(210)의 후단에는 외주면을 따라 환형의 돌출부(211)가 형성되고, 상기 주사바늘 고정관(100)의 내주면에는 상기 돌출부(211)에 대응되는 제2홈부(110)가 형성되어 상기 몸체부(210)가 주사바늘 고정관(100)의 내측에서 전후로 유동되지 않고 견고하게 고정된다. 그리고 상기 필터부재(200)의 전단에는 가스켓(300)이 끼워져 결합된다.An annular protrusion 211 is formed on an outer circumferential surface of the rear portion of the body 210 and a second groove 110 corresponding to the protrusion 211 is formed on an inner circumferential surface of the injection needle fixing tube 100, The body portion 210 is firmly fixed to the inside of the injection needle fixing tube 100 without flowing back and forth. A gasket (300) is fitted and coupled to the front end of the filter member (200).

상기 가스켓(300)은 주사바늘 고정관(100)의 내주면을 따라 긴밀히 밀착되는 환형의 외향플랜지부(310)와 주사바늘 고정관(100)의 내부로 유입되는 압력에 의해 탄성개방되어 주사바늘 고정관(100)의 내부로 유입된 주사액을 필터부재(200)로 배출시키는 유로를 형성시키는 주사액유입부(320)를 구비한다.The gasket 300 is elastically opened by the pressure of the annular outward flange portion 310 closely attached to the inner peripheral surface of the injection needle fixing tube 100 and the pressure of the injection needle fixing tube 100, And an injecting liquid inlet 320 for injecting the injected liquid into the filter member 200.

상기 주사액유입부(320)는 고무와 같은 자체적으로 탄성을 가진 플렉시블한 재질로 이루어져 있으며, 가스켓(300)의 전단 중앙에 후방을 향해 중앙으로 수렴하게 돌출형성된 수렴부(321)와 상기 수렴부(321)의 중앙에 형성된 절개선(322)을 구비한다. 따라서, 상기 절개선(322)은 피스톤(2)이 후방으로 이동할 때 저하되는 주사바늘 고정관(100)의 내부 압력에 의해 확장되면서 개방되는 반면 주사액배출압력에 의해서는 상기 수렴부(321)에 의하여 개방이 불허된다.The injecting liquid inlet 320 is made of a resilient and flexible material such as rubber. The injecting liquid inlet 320 includes a converging portion 321 formed at the center of the front end of the gasket 300 so as to be converged to the center, (322) formed at the center of each of the first and second openings (321, 321). Accordingly, the incision reduction 322 is opened while expanding by the internal pressure of the injection needle fixing tube 100, which is lowered when the piston 2 moves backward, while it is opened by the converging portion 321 The opening is not allowed.

한편, 상기 몸체부(210)의 가장자리를 따라 상기 가스켓(300)과 주사바늘 고정관(100)의 내주면 사이의 틈새(A)와 연통되는 관통공(213)들이 일정간격을 두고 형성된다.A through hole 213 communicating with the gap A between the gasket 300 and the inner circumferential surface of the injection needle fixing tube 100 is formed along the edge of the body 210 at a predetermined interval.

본 발명에 따르면, 상기 주사바늘 고정관(100)의 내주면에는 제1홈부(120)가 형성된다.According to the present invention, the first groove 120 is formed on the inner circumferential surface of the injection needle fixing tube 100.

상기 제1홈부(120)는 가스켓(300)의 전단에 의해 폐쇄되어 있다가 필터부재(200)의 관통공(213)을 통해 상기 틈새(A)로 배출되는 주사액의 배출압력에 의해 가스켓(300)이 전방으로 밀려 이동할 때 비로소 개방된다. 제1홈부(120)가 개방되면 상기 틈새(A)와 주사바늘 고정관(100)의 전단을 연통시키는 주사액배출유로가 형성된다.The first groove portion 120 is closed by the front end of the gasket 300 and then is inserted into the through hole 213 of the filter member 200 When the gasket 300 is pushed forward by the discharge pressure of the injection liquid discharged into the clearance A, it is not opened. When the first groove 120 is opened, an injection liquid discharge passage is formed to communicate the clearance A with the front end of the injection needle fixing tube 100.

이와 같이 구성된 본 발명의 필터부재를 구비한 안전주사기는 다음과 같이 사용된다.The safety syringe having the filter member of the present invention thus constructed is used as follows.

먼저, 주사액이 담겨진 앰플의 상단을 깨뜨려 개봉하고, 개봉된 부분으로 주사바늘(3)을 인입시킨 후 피스톤(2)을 후퇴시키면, 도 5에 도시된 바와 같이, 피스톤(2)이 후방으로 이동할 때 저하되는 주사바늘 고정관(100)의 내부압력에 의하여 가스켓(300)의 주사액유입부(320)가 개방된다. 즉, 피스톤(2)이 후방으로 이동하게 되면, 밀폐 상태인 주사바늘 고정관(100)의 내부에 음압이 작용하면서 이 음압에 의하여 주사액유입부(320)가 후방으로 잡아당겨지게 되고, 그 결과 절개선(322)이 음압이 작용하는 방향으로 확장되면서 주사액유입부(320)가 개방되는 것이다.First, the upper end of the ampoule containing the injection liquid is opened to open, the piston 2 is retracted after the injection needle 3 is drawn into the opened part, and the piston 2 moves backward as shown in FIG. 5 The injection liquid inflow portion 320 of the gasket 300 is opened by the internal pressure of the injection needle fixing tube 100 which is lowered when the injection needle 100 is lowered. That is, when the piston 2 moves backward, a negative pressure is applied to the inside of the sealed needle fixing tube 100, so that the injection fluid inlet 320 is pulled backward by the negative pressure. As a result, The improvement 322 extends in the direction in which the negative pressure acts and the injection liquid inflow portion 320 is opened.

주사액유입부(320)가 개방되면 주사바늘(3)과 실린더(1) 사이의 주사액유입유로가 확보되면서 미세한 앰플조각을 비롯한 이물질들을 포함한 앰플 내부의 주사액이 가스켓(300)과 필터부재(200)를 경유하여 실린더(1) 내부로 원활하게 유입되는데, 이 과정에서 주사액에 포함되어 있던 앰플조각을 비롯한 이물질들은 필터(220)에 의해 모두 필터링되어 이물질들을 포함하지 않은 깨끗한 주사액만 실린더(1) 내부로 유입되며, 필터링 된 이물질들은 필터부재(200)의 몸체부(210) 내부에 수용된다.When the injection liquid inlet 320 is opened, the injection liquid flow path between the injection needle 3 and the cylinder 1 is secured, and the injected liquid inside the ampoule containing the foreign substance including minute ampoule pieces passes through the gasket 300 and the filter member 200, The foreign matter including the pieces of ampoule contained in the injection liquid are all filtered by the filter 220 so that only the clean injected liquid containing no foreign substances is injected into the cylinder 1 And the filtered foreign substances are received inside the body portion 210 of the filter member 200. [

이후, 실린더(1) 내부로의 주사액의 충진이 완료되어 피스톤(2)의 후방이동이 중지되면, 주사바늘 고정관(100)의 내부에 작용하던 음압이 해제되면서 주사액의 유입이 중지됨과 동시에 개방되었던 주사액유입부(320)가 원상태로 폐쇄된다. 그 결과, 필터부재(200)의 내부는 외부와 격리된 밀폐상태가 되므로 필터(220)에 의해 걸러져 필터부재(200)의 내부에 수용된 이물질들은 외부로 유출될 염려가 없다.Thereafter, when the filling of the injection liquid into the cylinder 1 is completed and the backward movement of the piston 2 is stopped, the negative pressure acting on the inside of the injection needle fixing tube 100 is released and the infusion of the injection liquid is stopped, The injection liquid inflow portion 320 is restored to its original state. As a result, since the inside of the filter member 200 is in a hermetically sealed state isolated from the outside, the foreign substances contained in the filter member 200 are filtered by the filter 220, and there is no fear that the foreign substances are leaked to the outside.

도 6에 도시된 바와 같이, 주사를 위하여 피스톤(2)을 전진시키면, 실린더(1) 내부에 있던 주사액이 실린더(1)를 빠져나와 주사바늘 고정관(100)의 내부로 유입된 후에 필터부재(200)의 관통공(213)을 통해 가스켓(300)과 주사바늘 고정관(100)의 내주면 사이의 틈새(A)로 빠져나가게 된다. 이는, 주사바늘 고정관(100)의 내부로 진입한 주사액이 필터(220)를 통과하여 몸체부(210) 내부로 유입되지만 가스켓(300)의 주사액유입부(320)가 폐쇄되어 있어 더 이상의 진입이 이루어지지 않게 되기 때문이다. 여기서, 주사액유입부(320)는 주사액이 몸체부(210) 내부로 유입되면 주사액의 유입압력에 의해 수렴부(321)가 전방으로 밀리게 되는데, 후방을 향해 중앙이 수렴하도록 형성된 수렴부(321)의 구조적 특성상 절개선(322)의 폐쇄상태는 더욱 견고하게 유지되므로 주사액유입부(320)는 밀폐상태를 확실하게 유지할 수 있게 된다.6, when the piston 2 is advanced for scanning, the injection liquid inside the cylinder 1 flows out of the cylinder 1 and flows into the interior of the injection needle fixing tube 100, Through the through hole 213 of the injection needle 200 to the gap A between the gasket 300 and the inner circumferential surface of the injection needle fixing tube 100. This is because the injection liquid which has entered into the injection needle fixing tube 100 flows into the body part 210 through the filter 220 but the injection liquid inlet part 320 of the gasket 300 is closed, This is not done. Here, when the injection liquid flows into the body 210, the injection liquid inflow unit 320 pushes the convergence unit 321 forward by the inflow pressure of the injection liquid. The convergence unit 321 , The closed state of the incisional reduction 322 is maintained more firmly, so that the injection liquid inflow part 320 can reliably maintain the closed state.

이와 같이 가스켓(300)과 주사바늘 고정관(100)의 내주면 사이의 틈새(A)로 빠져나간 주사액은 가스켓(300)의 외향플랜지부(310)와 접촉하게 되고, 주사액배출압력에 의하여 가스켓(300)이 전방으로 밀려 이동하게 된다. 이때, 가스켓(300)이 전방으로 이동하더라도 가스켓(300)은 여전히 필터부재(200)와 긴밀하게 끼움 결합된 상태를 유지하고 있기 때문에 필터부재(200)의 몸체부(210) 내부에 수용된 이물질들을 비롯하여 몸체부(210) 내부로 진입한 주사액은 외부로 유출되지 않는다.The injected fluid that has exited into the gap A between the gasket 300 and the inner circumferential surface of the injection needle fixing tube 100 is brought into contact with the outward flange portion 310 of the gasket 300 and the gasket 300 ) Is pushed forward. At this time, even if the gasket 300 moves forward, since the gasket 300 is still closely fitted with the filter member 200, the foreign substances contained in the body portion 210 of the filter member 200 The injected liquid that has entered into the body 210 does not flow out to the outside.

가스켓(300)이 전방으로 이동하게 되면, 가스켓(300)에 의해 폐쇄되어 있던 제1홈부(120)가 개방되면서 상기 틈새(A)로 진입한 주사액은 제1홈부(120)를 통해 외향플랜지부(310)를 우회하여 가스켓(300)의 전방으로 빠져나온 후 주사바늘 고정관(100)에 끼워진 주사바늘(3)로 배출된다.When the gasket 300 is moved forward, the first groove 120, which is closed by the gasket 300, is opened, and the injected liquid entering the gap A flows through the first groove 120, After passing out of the gasket 300 and bypassing the injection needle 310, is discharged to the injection needle 3 fitted in the injection needle fixing tube 100.

상기한 바와 같이, 본 발명은 필터(220)팁을 교체하지 않고도 주사가 가능하므로 사용상이 매우 편리하다.As described above, the present invention is very convenient to use because it is possible to scan without replacing the tip of the filter 220.

한편, 주사가 완료된 상태에서는 가스켓(300)이 전방으로 이동하여 제1홈부(120)가 개방된 상태이므로 주사기를 재사용하게 될 경우 주사액이 필터부재(200)를 경유하지 않고 제1홈부(120)와 관통공(213)을 통해 그대로 실린더(1) 내부로 유입된다. 따라서, 주사액의 필터링이 전혀 이루어지지 않게 되므로 주사기의 재사용이 불가능하다.In the meantime, when the injection is completed, the gasket 300 moves forward and the first groove 120 is opened. Therefore, when the syringe is reused, the injected liquid does not pass through the filter member 200, And the through-hole 213, as shown in FIG. Therefore, since the injection solution is not filtered at all, reuse of the syringe is impossible.

이와 같이, 도면을 참조하여 본 발명의 바람직한 실시예에 대해 상술하였으나 본 발명은 전술한 실시예에 한정되지 않으며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진자가 본 발명의 사상을 벗어나지 않고 변형 가능하며, 이러한 변형은 본 발명의 권리범위에 속할 것이다.While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be takeners of ordinary skill in the art, And such variations are within the scope of the present invention.

100...주사바늘 고정관 110...제2홈부
120...제1홈부 200...필터부재
201...전방개구 202...후방개구
210...몸체부 211...돌출부
213...관통공 220...필터
300...가스켓 310...외향플랜지부
320...주사액유입부 321...수렴부
322...절개선 A...틈새100 ... needle stapler 110 ... second groove
120 ... first groove portion 200 ... filter member
201 ... front opening 202 ... rear opening
210 ... body portion 211 ... protrusion
213 ... through hole 220 ... filter
300 ... gasket 310 ... outward flange portion
320 ... Injection liquid inlet part 321 ... Converging part
322 ... section improvement A ... niche

Claims (4)

주사액에 포함된 이물질을 필터링하도록 피스톤이 설치된 실린더의 전단에 결합되는 주사바늘 고정관의 내부에 긴밀히 설치된 필터부재를 구비한 안전주사기에 있어서,
상기 필터부재의 전단에는 상기 주사바늘 고정관의 내주면을 따라 긴밀히 밀착되는 환형의 외향플랜지부와 피스톤이 후방으로 이동할 때 저하되는 주사바늘 고정관의 내부 압력에 의해 탄성개방되어 주사바늘 고정관의 내부로 유입된 주사액을 필터부재로 배출시키는 유로를 형성시키는 주사액유입부를 구비한 가스켓이 끼워지고,
상기 필터부재의 가장자리에는 상기 가스켓과 주사바늘 고정관의 내주면 사이의 틈새와 연통되는 관통공이 형성되며,
상기 주사바늘 고정관의 내주면에는 상기 가스켓의 전단에 의해 폐쇄되어 있다가 필터부재의 관통공을 통해 상기 틈새로 배출되는 주사액의 배출압력에 의해 가스켓이 전방으로 밀려 이동할 때 개방되면서 상기 틈새와 주사바늘 고정관의 전단을 연통시키는 주사액배출유로를 형성시키는 제1홈부가 형성된 것을 특징으로 하는 필터부재를 구비한 안전주사기.A safety syringe having a filter member tightly installed inside a needle fixing tube to be coupled to a front end of a cylinder provided with a piston for filtering foreign matters contained in an injection solution,
The front end of the filter member is provided with an annular outward flange portion closely in close contact with the inner circumferential surface of the injection needle fixing tube and an inner pressure of the injection needle fixing tube which is lowered when the piston moves backward, A gasket having an injection liquid inlet portion for forming a flow passage for discharging the injection liquid to the filter member is fitted,
A through hole communicating with a gap between the gasket and the inner circumferential surface of the injection needle fixing tube is formed at an edge of the filter member,
The inner circumferential surface of the injection needle fixing tube is closed by the front end of the gasket and is opened when the gasket is pushed forward by the discharge pressure of the injection liquid discharged through the through hole of the filter member to the gap, Wherein a first groove portion is formed to form an injection liquid discharge passage for communicating the front end of the filter member. 제 1항에 있어서,
상기 필터부재는 서로 연통되게 형성된 전방개구와 후방개구로 이루어진 몸체부와, 상기 후방개구에 부착되어 상기 후방개구를 통해 주사바늘의 내부로 유입되는 주사액에 포함된 이물질을 걸러주는 필터로 구성된 것을 특징으로 하는 필터부재를 구비한 안전주사기.The method according to claim 1,
The filter member is composed of a body portion formed of a front opening and a rear opening formed to communicate with each other and a filter attached to the rear opening and filtering the foreign substances contained in the injection liquid flowing into the interior of the injection needle through the rear opening Wherein the filter member is made of a plastic material. 제 2항에 있어서,
상기 몸체부의 후단에는 외주면을 따라 환형의 돌출부가 형성되고, 상기 주사바늘 고정관의 내주면에는 상기 돌출부에 대응되는 제2홈부가 형성되어 상기 필터부재가 주사바늘 고정관의 내측에서 전후로 유동됨을 방지하도록 한 것을 특징으로 하는 필터부재를 구비한 안전주사기.3. The method of claim 2,
And a second groove portion corresponding to the protrusion is formed on the inner circumferential surface of the injection needle fixing tube to prevent the filter member from flowing back and forth from the inside of the injection needle fixing tube Wherein the syringe has a filter member. 제 1항에 있어서,
상기 주사액유입부는 상기 가스켓의 전단 중앙에 후방을 향해 중앙으로 수렴되게 돌출형성된 수렴부와 상기 수렴부의 중앙에 형성된 절개선을 구비한 것을 특징으로 하는 필터부재를 구비한 안전주사기.The method according to claim 1,
Wherein the injection fluid inflow portion includes a convergent portion formed at the center of the front end of the gasket so as to converge toward the center toward the rear and an incision formed at the center of the convergent portion.
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WO2016105023A1 (en) * 2014-12-24 2016-06-30 최영철 Filter assembly for syringe
KR101668686B1 (en) * 2016-04-04 2016-10-24 백우인 Syringe with filter
KR101680211B1 (en) 2015-12-01 2016-11-28 최숙녀 Filter assembly for syringe interior and safety syringe using the same
WO2020197140A1 (en) * 2019-03-22 2020-10-01 김호임 Syringe provided with filter

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KR101324555B1 (en) 2013-03-20 2013-11-11 주식회사 티에이치엠코리아 Hub with safety filter for syringe
KR20140001800A (en) * 2013-11-13 2014-01-07 장진영 Filter assembly for syringe
KR101358936B1 (en) 2013-07-23 2014-02-11 주식회사 아이엠티코리아 Connector type filter for a syringe, syringe with a filter and manufacturing method thereof

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KR101222881B1 (en) 2011-07-11 2013-01-17 김근배 Filter needle
KR101324555B1 (en) 2013-03-20 2013-11-11 주식회사 티에이치엠코리아 Hub with safety filter for syringe
KR101358936B1 (en) 2013-07-23 2014-02-11 주식회사 아이엠티코리아 Connector type filter for a syringe, syringe with a filter and manufacturing method thereof
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WO2016105023A1 (en) * 2014-12-24 2016-06-30 최영철 Filter assembly for syringe
KR101680211B1 (en) 2015-12-01 2016-11-28 최숙녀 Filter assembly for syringe interior and safety syringe using the same
KR101668686B1 (en) * 2016-04-04 2016-10-24 백우인 Syringe with filter
WO2020197140A1 (en) * 2019-03-22 2020-10-01 김호임 Syringe provided with filter
CN113853225A (en) * 2019-03-22 2021-12-28 金镐任 Syringe with filter

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