KR101437516B1 - Filter tip for syringe - Google Patents

Filter tip for syringe Download PDF

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Publication number
KR101437516B1
KR101437516B1 KR1020140085294A KR20140085294A KR101437516B1 KR 101437516 B1 KR101437516 B1 KR 101437516B1 KR 1020140085294 A KR1020140085294 A KR 1020140085294A KR 20140085294 A KR20140085294 A KR 20140085294A KR 101437516 B1 KR101437516 B1 KR 101437516B1
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KR
South Korea
Prior art keywords
hub
rear hub
syringe
cylinder
filter tip
Prior art date
Application number
KR1020140085294A
Other languages
Korean (ko)
Inventor
백우인
Original Assignee
백우인
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 백우인 filed Critical 백우인
Priority to KR1020140085294A priority Critical patent/KR101437516B1/en
Application granted granted Critical
Publication of KR101437516B1 publication Critical patent/KR101437516B1/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
    • 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
    • A61M2005/3128—Incorporating one-way valves, e.g. pressure-relief or non-return valves

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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 filter tip for a syringe, wherein the filter tip is coupled with the syringe only when a syringe liquid of an ampoule is filled in the syringe so that ampoule pieces included in the syringe liquid are filtered. The filter tip (100) for a syringe is inserted in a cylinder when a syringe liquid in an ampoule is filled, so that foreign material included in the syringe liquid is filtered, and the filter tip (100) is removed from the cylinder. The filter tip (100) comprises: a front hub (110) which has both ends opened and a front end coupled with a syringe needle fixing pipe (4); a rear hub (120) which has both ends opened and is coupled with the rear of the front hub; a filter member (130) which covers the front opening of the rear hub; and a gasket (140) which is closely inserted in the front end of the rear hub and is elastically opened by means of the inflow pressure of the syringe liquid fed into the rear hub through the filter member at the center, wherein a path is formed to discharge the syringe liquid fed into the rear hub towards the cylinder, and the path is closed by means of an increase in the internal pressure of the rear hub when the syringe liquid filled in the cylinder is discharged.

Description

Filter tip for syringe {Filter tip for syringe}

The present invention relates to a filter tip for a syringe which is connected to a syringe and filters the pieces of ampoule contained in an injection liquid only when filling the syringe with the injection liquid of the ampule.

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).

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.

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.

The filter tip 10 thus used is removed from the syringe, and when the injection needle 3 is coupled to the syringe from which the filter tip has been removed, as shown in Fig. 2B, A safe injection is performed only with the filtered injected liquid.

However, since the prior art described above is somewhat effective in that foreign substances contained in the injection liquid can be effectively filtered, it is similar in appearance to the conventional injection needle fixing tube 4, 10) may not be removed from the syringe, but may be injected into the patient as it is. In such a case, a very dangerous and serious accident occurs in which the injected solution filled with the foreign material is administered to the patient.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a syringe having a filter member which can not be reused.

In order to achieve the above object, the present invention provides a filter tip for a syringe, wherein the filter tip is inserted into a cylinder when the injection liquid in the ampule is filled in a cylinder, A rear hub which is open at its front end and to which an injection needle fixing tube is coupled, a rear hub which is open at both ends and is coupled to the rear of the front hub, a filter member covering the open front end of the rear hub, And a flow path for discharging the injection liquid, which is elastically released by the inflow pressure of the injection liquid flowing into the interior of the rear hub through the injection liquid inflow part formed at one side and into the interior of the rear hub, into the interior of the rear hub, When the injected fluid is discharged into the cylinder, the pressure in the rear hub is increased So that the flow path is closed.

In addition, the injection liquid inflow portion may include a convergent portion formed at the center of the rear end of the gasket so as to converge toward the center toward the cylinder, and an incision formed at the center of the convergent portion.

It is preferable that a locking protrusion is formed on the inner circumferential surface of the front hub to prevent the rear hub from coming off, and a locking groove corresponding to the locking protrusion is formed on the outer circumferential surface of the rear hub.

The rear hub may have an annular stepped shape closely adhered to the outer circumferential surface of the body portion of the gasket, and an outward flange may be formed on the outer circumferential surface of the front opening portion of the valve gasket so as to be engaged with the step of the rear hub. have.

According to the present invention configured as described above, when the injection liquid is filled into the cylinder, the injection liquid inflow portion formed in the gasket fitted to the front end of the filter member is opened by the infusion pressure of the injection liquid, and the injection liquid is filtered. The injection port is closed.

Therefore, even if the injection is performed by the user carelessly after the filtering is performed, the injection solution injecting unit is closed as soon as the user pushes the piston, so that the injection solution is not discharged to the injection needle, so that the effect of reusing the injector is essentially impossible .

1 shows a typical syringe;
2 is a sectional view of a conventional syringe with a filter member in use;
3 is an exploded perspective view of a syringe having a filter member according to the present invention;
FIG. 4 is a perspective view of a syringe having a filter member according to the present invention in use; FIG.
Fig. 5 is a perspective view of the body of the filter member constituting the present invention. Fig.
FIG. 6 is a cross-sectional view showing a main part of a syringe having 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 showing a principal part of a syringe having a filter member according to the present invention, in which a liquid injected into a cylinder is not discharged by a gasket; FIG.

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.

3 to 6, the filter tip 100 for a syringe according to the present invention is inserted into the cylinder 1 when filling the cylinder 1 with an injection liquid in the ampoule, and the foreign substance contained in the injected liquid is filtered A rear hub 120 connected to the front hub 110 and the rear hub 110 and a filter member 130 installed on the rear hub 120 and a rear hub 120 And a gasket 140 mounted inside the gasket 140.

The front hub 110 is open at its both ends and is connected to the needle fixing pipe 4 so as to be communicatively connected through an open front end protruding forward.

The rear hub 120 is open at its both ends and inserted into the front hub 110 through the rear end of the front hub 110 to be engaged. The cylinder (1) of the syringe is inserted and coupled to the rear end of the rear hub (120).

Meanwhile, the rear hub 120 may be formed with an engagement groove 121 on the outer circumferential surface thereof so as not to be separated from the front hub 110 due to the inflow pressure of the injection fluid flowing from the front side. In this case, on the inner circumferential surface of the front hub 110, a locking protrusion 111 corresponding to the locking groove 121 is formed.

A filter member 130 is coupled to an open front end of the rear hub 120. The filter member 130 is located at the front end of the rear hub 120 and filters foreign substances contained in the injection liquid flowing into the rear hub 120 through the front hub 110.

The gasket 140 is tightly fitted into the open front end of the rear hub 120. The inner surface of the rear hub 120 is formed with an annular stepped portion that closely contacts the outer circumferential surface of the body portion of the gasket 140 so that the gasket 140 is not separated from the rear hub 120 due to the inflow pressure of the injected liquid from the front side 122 may be formed. In this case, the outward flange 141 is formed on the outer circumferential surface of the front opening portion of the gasket 140 so as to engage with the step 122 of the rear hub 120.

According to the present invention, the gasket 140 includes an injection liquid inlet 142. The injecting liquid inflow portion 142 includes a converging portion 142a formed at the rear end center of the gasket 140 so as to converge toward the center toward the cylinder 1 and an incision 142b formed at the center of the converging portion 142a. . The injecting liquid inflow portion 142 is elastically opened by the inflow pressure of the injecting liquid flowing into the inside of the rear hub 120 through the converging portion 142a to inject the injecting liquid introduced into the inside of the rear hub 120 into the cylinder 1), and when the injected fluid injected into the cylinder 1 is discharged, the flow path is closed due to an increase in the inner pressure of the rear hub 120.

The filter tip 100 for a safety syringe of the present invention thus configured is used as follows.

First, the front end of the cylinder 1 is fitted to the rear hub 120 of the filter tip 100 for a safety syringe of the present invention, and the injection needle fixing pipe 4 is fitted to the front hub 110. In this way, the needle fixing tube 4 and the cylinder 1 are in communication with each other through the front hub 110 and the rear cylinder 1.

Then, the upper end of the ampoule containing the injection liquid is opened to be opened, the injection needle 3 fixed to the injection needle fixing tube 4 is pulled into the opened part, and then the piston 2 is retracted, The injection liquid inflow portion 142 of the gasket 140 is opened by the internal pressure of the rear hub 120 which is lowered when the piston 2 moves backward. That is, when the piston 2 moves rearward, a negative pressure is applied to the inside of the rear hub 120 in a closed state, so that the injection liquid inflow portion 142 is pulled backward by the negative pressure, (142b) extends in a direction in which the negative pressure acts, and the injection liquid inflow portion (142) is opened.

When the injection liquid inflow portion 142 is opened, the injection liquid flow path between the injection needle 3 and the cylinder 1 is secured, and the injection liquid in the ampoule including foreign matter including minute pieces of ampoule flows through the open front end of the front hub 110 And then flows into the cylinder 1 smoothly via the filter member 130. In this process, the foreign substances including the pieces of the ampoule contained in the injection liquid are all filtered by the filter, so that only a clean injection solution containing no foreign substances And enters the inside of the cylinder 1, and the filtered foreign substances are accommodated in the inside of the front hub 110.

Thereafter, when the injection 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 interior of the rear hub 120 is released and the infusion of the injection liquid is stopped, The inlet portion 142 is closed in its original state.

7, even if the user directly scans the patient without removing the filter tip 100 already used from the syringe, as shown in FIG. 7, due to an increase in the inner pressure of the rear hub 120, The piston 142 is closed and the piston 2 is not moved forward, so that no injection is performed. This is because when the injection liquid is discharged through the rear end of the rear hub 120, the convergence portion 142a is pushed forward due to an increase in the inner pressure of the rear hub 120. The convergence portion 142a , The closed state of the incision improvement 142b is more firmly maintained. The user can easily push the piston 2 forward and recognize that the filter tip 100 has already been used.

Therefore, the present invention ensures safe use because no medical accident caused by carelessness of the user is generated at all.

When the injection of the injection liquid into the cylinder 1 is completed, the filter tip 100 for the safety syringe of the present invention is removed from the cylinder 1 and the filter tip 100 for safety syringe of the present invention is removed When a new injection needle fixing tube 4 coupled with the injection needle 3 is coupled to the injector, the injection is safely performed only with the cleanly filtered injection fluid.

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 ... syringe filter tip 110 ... front hub
111 ... stopper 120 ... rear hub
121 ... engaging groove 122 ... step
130 ... filter member 140 ... gasket
141 ... outward flange 142 ... injection liquid inlet part
142a ... convergence part 142b ... section improvement

Claims (4)

A filter tip for a syringe which is inserted into a cylinder when an injection liquid in an ampule is filled in a cylinder and is removed from a cylinder after filtering foreign substances contained in an injection liquid to be introduced,
A front hub having the filter tip opened at both ends and having a front end coupled with a needle insertion tube, a rear hub having both ends opened and coupled to the rear of the front hub, a filter member covering the front end of the rear hub, The injector is elastically opened by the inflow pressure of the infusion liquid flowing into the interior of the rear hub through the infusion section through the infusion section formed on one side and is injected into the interior of the rear hub, And a gasket for closing the flow path due to an increase in inner pressure of the rear hub when the injected fluid is discharged into the cylinder. The method according to claim 1,
Wherein the injection fluid inlet comprises a convergent portion formed at the center of the rear end of the gasket so as to converge toward the center toward the cylinder, and an incision formed at the center of the convergent portion. The method according to claim 1,
A locking protrusion is formed on the inner circumferential surface of the front hub to prevent the rear hub from coming off,
And an engagement groove corresponding to the engagement protrusion is formed on an outer peripheral surface of the rear hub. 3. The method of claim 2,
Wherein the rear hub has an annular stepped portion which closely contacts the outer peripheral surface of the body portion of the gasket,
Wherein an outward flange is formed on an outer circumferential surface of the front opening portion of the gasket so as to be engaged with the step of the rear hub.
KR1020140085294A 2014-07-08 2014-07-08 Filter tip for syringe KR101437516B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140085294A KR101437516B1 (en) 2014-07-08 2014-07-08 Filter tip for syringe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140085294A KR101437516B1 (en) 2014-07-08 2014-07-08 Filter tip for syringe

Publications (1)

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KR101437516B1 true KR101437516B1 (en) 2014-09-04

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230020642A (en) * 2021-08-04 2023-02-13 권정옥 filter for syringe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003039405A2 (en) 2001-11-09 2003-05-15 Rubicon Medical, Inc. Stent delivery device with embolic protection
KR101354451B1 (en) 2012-12-03 2014-01-28 김근배 A filter 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
KR20140065137A (en) * 2012-11-21 2014-05-29 엘케이메디칼(주) Filter needle integrated type syringe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003039405A2 (en) 2001-11-09 2003-05-15 Rubicon Medical, Inc. Stent delivery device with embolic protection
KR20140065137A (en) * 2012-11-21 2014-05-29 엘케이메디칼(주) Filter needle integrated type syringe
KR101354451B1 (en) 2012-12-03 2014-01-28 김근배 A filter 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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230020642A (en) * 2021-08-04 2023-02-13 권정옥 filter for syringe
KR102565467B1 (en) 2021-08-04 2023-08-08 권정옥 filter for syringe

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