WO2013154235A1

WO2013154235A1 - Filter member for syringe

Info

Publication number: WO2013154235A1
Application number: PCT/KR2012/007229
Authority: WO
Inventors: 천준환; 이강성; 우병찬; 석원현; 정인수
Original assignee: (주)상아프론테크
Priority date: 2012-04-13
Filing date: 2012-09-07
Publication date: 2013-10-17
Also published as: KR101165946B1

Abstract

Disclosed is a filter member for a syringe. The disclosed filter member for a syringe is coupled to a front portion of a cylinder of the syringe, and comprises: a needle holder having a front portion to which a needle is coupled, an open rear portion, and an inside in which a first installation part and a second installation part are continuously formed in an internal rear side thereof; a middle block embedded in the first installation part of the needle holder and having a suction passage hole penetrating in an axial direction to enable an injection to be suctioned to pass through the hole; an end cap having a front portion rotatably inserted to the second installation part, a rear portion opened to be coupled with the cylinder of the syringe, and a front surface with a filter hole and a communication hole selectively communicated to the suction passage hole; and a filter blocking the filter hole of the end cap.

Description

Syringe filter element

The present invention relates to a filter element for a syringe.

In particular, when inhaling the injection solution into the syringe, do not go through the filter to facilitate the inhalation of the injection, while the administration of the injection sucked into the syringe through the filter to allow the foreign substances contained in the injection solution to be filtered It relates to a filter element for a syringe.

1 is a block diagram of a general syringe.

According to FIG. 1, a general syringe sucks or injects an injection liquid while moving back and forth in a cylindrical cylinder 1 having a space portion formed therein so as to store the injection liquid therein, and a chamber 1 a formed inside the cylinder 1. A needle (2) inserted into the tip of the needle holder (3) and the needle holder (3) fitted to the outer circumferential surface of the neck (1b) formed in front of the cylinder (1) to discharge the piston (1) It is comprised including (4).

The syringe of this configuration breaks the upper part of the ampoule (A: Ampoule) containing the injection liquid, opens it, inserts the injection needle 4 into the opened part, and retracts the piston 2. It is sucked into the inside of (1). In this state, when the needle 4 is inserted into the affected part of the patient and the piston 2 is advanced, the injection liquid in the cylinder 1 is introduced into the patient through the needle 4.

However, when opening and breaking the ampoule A during the injection and injecting of the injection solution, glass fragments are scattered and a part thereof enters the inside of the ampoule A. As such, the glass debris that has entered the ampoule (A) is mixed into the inside of the syringe when the injection liquid is inhaled by the syringe, and when administered to the human body, it has a fatal adverse effect on the patient.

In order to improve this problem, in Korea Patent Registration No. 10-981586 (hereinafter referred to as "prior patent"), as shown in Figure 2, before inhaling the injection liquid inside the syringe, the filter 21 in the interior of the syringe A technique has been proposed in which the glass fragments contained in the injection liquid are filtered in advance by the filter 21 by sucking the injection liquid while the embedded filter tip 20 is inserted into the neck portion 11 of the cylinder 10.

However, the above patent discloses the suction of the injection liquid into the syringe while the filter tip 20 is inserted, and when the injection of the syringe to the patient to remove the filter tip 20, a new syringe tip Since the injection liquid must be administered after the 30 is attached to the syringe, the inhalation and administration process of the injection liquid is cumbersome, and the smooth suction of the injection liquid is prevented by the filter pressure applied by the filter 21 in the process of inhaling the injection liquid into the syringe. Interfere and reduce usability.

In addition, it is also pointed out that the manufacturing cost is increased because the filter tip 20 must be manufactured separately.

The present invention has been made to solve the conventional problems as described above, the main object of the present invention is to prevent the filter pressure does not work when inhaling the injection liquid with a syringe to facilitate the inhalation of the injection liquid, while the injection liquid in the syringe When administering to the human body to filter the foreign matter contained in the injection solution to provide a filter member for a syringe that can simultaneously obtain the inhalation improvement and filtering effect of the injection solution.

According to the first aspect of the present invention for achieving the above object,

A syringe filter member coupled to a front of a cylinder of a syringe, comprising: a needle holder coupled to a front, a rear of which is opened, and a needle holder having a first installation portion and a second installation portion connected to the rear side in the rear; A middle block embedded in the first installation part of the needle holder, the middle block having a suction passage hole through which the suction liquid passes; An end cap in which the front part is inserted into the second installation part in a rotatable state, and an opening cap is formed at a rear side thereof to allow the cylinder of the syringe to be fitted, and a filter hole and a communication hole selectively communicating with the suction passage hole; And a filter blocking the filter hole of the ending cap.

In addition, the present invention is characterized in that the seating groove in which the filter is seated is formed in the filter hole and the periphery of the front end cap.

According to a second aspect of the present invention for achieving the above object,

A syringe filter member coupled to a front of a cylinder of a syringe, comprising: a needle holder coupled to a front, a rear of which is opened, and a needle holder having a first installation portion and a second installation portion connected to the rear side in the rear; A middle block embedded in the first installation part of the needle holder, the middle block having a suction passage hole and a discharge passage hole penetrating in an axial direction; A filter blocking the rear of the discharge passage hole; And a front part is inserted into the second installation part in a rotatable state, and a rear part thereof is opened so that the cylinder of the syringe is fitted into the rear part, and a communication hole is selectively formed in the front end surface thereof in communication with the suction passage hole or the discharge passage hole. A filter member for a syringe including an ending cap is provided.

In addition, the present invention is characterized in that a seating groove in which the filter is seated is formed in the discharge passage hole and the periphery of the middle block back.

In addition, the present invention is characterized in that the ratchet protrusion is formed on the outer peripheral surface of the front end of the end cap, the ratchet groove is formed on the inner wall of the second holder of the needle holder to allow only one direction rotation while the ratchet protrusion is inserted. .

In addition, the present invention is characterized in that at least one key groove is formed on the outer circumferential surface of the middle block, and a key inserted into the key groove is formed on the inner wall of the first installation part of the needle holder.

The present invention is easy to use as the smooth inhalation of the injection can be made by not passing through the filter when inhaling the injection into the syringe, and when passing the injection to the human body by administering the injection to the human body By filtering the foreign matter (glass fragments of the ampoule) contained in the injection solution, the above-mentioned ease of use and filtering effect can be obtained simultaneously.

In addition, the present invention does not require two parts, such as a filter tip, a syringe tip as in the prior art, it is possible to reduce the cost because the smooth suction and filtering action of the injection liquid by one filter member.

1 is a block diagram of a general syringe.

2 is a block diagram of a conventional syringe having a safety filter tip.

3 is an exploded perspective view of the filter member for a syringe according to the first embodiment of the present invention.

Figure 4 is a perspective view of the coupling of the filter element for a syringe according to the first embodiment of the present invention.

5 is an exploded cross-sectional view of the filter element for a syringe according to the first embodiment of the present invention.

6 is a cross-sectional view taken along the line A-A of FIG.

7 is a perspective view of the main portion of the filter element for a syringe according to the first embodiment of the present invention, which is a state diagram when the injection liquid is sucked.

8 is a perspective view of the main portion of the filter element for a syringe according to the first embodiment of the present invention, which is a state diagram when discharging the injection liquid.

9 is a cross-sectional view taken along the line B-B of Figure 4, a state diagram before the rotation of the ending cap.

10 is a cross-sectional view taken along the line B-B of Figure 4, a state diagram after the rotation of the ending cap.

11 is a perspective view of the main portion of the filter element for a syringe according to the second embodiment of the present invention, which is a state diagram when the injection liquid is sucked.

12 is a perspective view of the main portion of the filter element for a syringe according to the second embodiment of the present invention, which is a state diagram when discharging the injection liquid.

(Explanation of the sign)

100: syringe 110: cylinder

200: filter element for syringe 210: needle holder

211: needle 212: first mounting portion

213: second installation unit 214: key

215: ratchet groove 216: groove

220: middle block 221: key groove

222: suction passage hole 223: discharge passage hole

224: filter seating groove 230: ending cap

231: filter hole 232: communication hole

233: filter seating groove 234: indentation protrusion

235: ratchet protrusion 240: filter

Hereinafter, embodiments of the present invention are disclosed.

The disclosed embodiments are provided so that those skilled in the art can easily understand the spirit of the present invention, and the present invention is not limited thereto. Embodiments of the invention may be modified in other forms within the spirit and scope of the invention. In this specification, 'and / or' is used to include at least one of the components listed before and after. In this specification, 'locating' on another component means not only that another component is directly positioned on one component, but also that a third component may be further positioned on the one component. . Each component or part of the present specification is referred to using the first, second, and the like, but the present disclosure is not limited thereto. The thickness and relative thickness of the components represented in the drawings may be exaggerated to clearly express embodiments of the present invention. In addition, the matters represented in the accompanying drawings may be different from the form actually embodied in the schematic drawings in order to easily explain the embodiments of the present invention.

The filter element for a syringe according to the present invention is provided with two embodiments.

제1 실시예의 주사기용 필터부재Syringe filter member of the first embodiment

3 is an exploded perspective view of the filter member for a syringe according to the first embodiment of the present invention, Figure 4 is a perspective view of the combination of the filter member for a syringe according to the first embodiment of the present invention, Figure 5 is a first view of the present invention An exploded cross-sectional view of the filter element for a syringe according to the embodiment, Figure 6 is a cross-sectional view taken along the line AA of FIG.

According to the drawings, the filter element 200 for the syringe of the first embodiment according to the present invention is coupled to the front of the cylinder 110 of the syringe 100 shown in Figure 6 foreign matter contained in the injection liquid (glass fragment of the ampoule) Etc.) to filter the needle holder 210, the middle block 220, the ending cap 230, and the filter 240.

The needle holder 210 is a component located at the forefront of the filter element 200 for a syringe, and a needle 211 is incorporated in front of the needle filter 211 via a sealant (not shown). .

In addition, the needle holder 210 has a rear opening, and the first mounting portion 212 and the second mounting portion 213 are provided in a stepped manner on the rear side of the chamber formed therein. At this time, at least one key (214) is formed at the tip of the first installation unit 212 to prevent rotation of the middle holder 210.

In addition, a ratchet groove 215 is formed on the inner wall of the second holder 213 of the needle holder 210 over a 90 ° range.

The middle block 220 is inserted into and installed in the first installation unit 212, and communicates between the ending cap 230 and the filter 240, which will be described in detail below, or directly communicates without the filter 240. Can be.

In addition, a key groove 221 is formed on the outer circumferential surface of the middle block 220 to insert a key 214 formed on the wall surface of the first mounting portion 212 of the needle holder 210. Accordingly, the middle block 220 is not rotated inside the needle holder 210. Alternatively, it is also possible to have a rectangular shape of the first installation unit 212 and the middle block 220 in place of the key groove or key.

In addition, around the axial center of the middle block 220 is formed in a symmetrical form so that the two suction passage holes 222 through which the suction liquid is passed through in the axial direction.

The ending cap 230 is a component located at the rear of the syringe filter member 200, the front of which is inserted into the second mounting portion 213 of the needle holder 210, the rear of the syringe cap 100 The cylinder 110 of the opening is fitted to fit.

In addition, the ending cap 230 has two filter holes 231 and two communication holes selectively communicating with the suction passage hole 222 around the axial center of the middle block 220 on the front thereof. 232 is formed symmetrically to penetrate in the axial direction.

In addition, the ending cap 230 has a filter seating groove 233 in which the filter hole 231 and the filter 240 are seated in a front surface thereof.

In addition, the end cap 230 is press-fitted into the annular groove 216 formed in the inner wall of the second mounting portion on the outer peripheral surface front, that is, the outer peripheral surface inserted into the second mounting portion 213 of the needle holder 210. An annular indentation protrusion 234 is formed to prevent the end cap 230 from being detached from the needle holder 210 arbitrarily.

In addition, a ratchet protrusion 235 inserted into the ratchet groove 215 of the needle holder 210 is formed on the front outer peripheral surface of the ending cap 230. The ratchet protrusion 235 is allowed to rotate by only 90 ° in one direction in the ratchet groove 215.

The filter 240 is padded into the filter seating groove 233 of the ending cap 230. The filter 240 embedded in the filter seating groove 233 blocks the filter hole 231 formed in the ending cap 230 to filter foreign substances contained in the injection liquid passing through the filter hole 231. Here, the filter 240 may be applied regardless of the type as long as it has a density capable of filtering the glass fragments of the ampoule.

Hereinafter, an operation process of the filter member for a syringe according to the first embodiment of the present invention will be described with reference to FIGS. 7 to 10.

7 is a perspective view of a main portion of the filter element for a syringe according to the first embodiment of the present invention, which is a state diagram when the injection liquid is sucked, and FIG. 8 is a perspective view of the main portion of the filter element for a syringe according to the first embodiment of the present invention. 9 is a sectional view taken along the line BB of FIG. 4, and is a state diagram before the rotation of the ending cap, and FIG. 10 is a sectional view taken along the line BB of FIG. 4, and a state diagram after the rotation of the ending cap.

According to these drawings, the syringe filter member 200 according to the first embodiment of the present invention is inserted into the middle block 220 of the first mounting portion 212 of the needle holder 210, the middle block 220 The key 214 of the first installation unit 212 is inserted into the key groove 221 of the fitting.

Next, while the filter 240 is inserted into the filter seating groove 233 of the ending cap 230, the front of the ending cap 230 is inserted into the second installation part 213 of the needle holder 210. In this case, the indentation protrusion 234 formed on the outer circumferential surface of the ending cap 230 is inserted into the recess 216 of the needle holder 210. As such, when the assembly is completed, the ratchet protrusion 235 of the ending cap 230 is inserted into the ratchet groove 215 of the needle holder 210 as shown in FIG. 9. In this case, the suction passage hole 222 of the middle block 220 and the communication hole 232 of the ending cap 230 should be coupled to match.

In this state, the top of the ampoule is opened and opened, and when the needle 211 is checked in the opened part and the piston of the syringe 100 is retracted, the injection liquid in the ampoule of the needle holder 210 and the middle block 220 is opened. It is sucked into the cylinder 110 of the syringe 100 through the communication hole 232 of the suction passage hole 222 and the end cap 230. In this case, since the communication hole 232 is not blocked by the filter 240 as shown in FIG. 7, since the filtering action is not performed, glass fragments generated when the ampoule is broken may be included in the injection liquid and sucked into the cylinder 110. When the inhalation of the injection solution does not pass through the filter 240, the injection solution can be easily inhaled without difficulty.

When the suction of the injection solution is completed, as shown in FIGS. 8 and 10, the ending cap 230 is rotated by 90 ° so that the ending cap blocked by the suction passage hole 222 and the filter 240 of the needle holder 210 is rotated. Match the filter hole 231 of 230. Rotation of the end cap 230 is made by the ratchet groove 215 and the ratchet protrusion 235. That is, as shown in FIG. 10, the ratchet protrusion 235 may be rotated in one direction (counterclockwise direction in the drawing) of the ratchet groove 215 formed over the 90 ° region on the inner wall of the second installation part 213. On the contrary, since the ratchet groove 215 and the ratchet protrusion 235 are not rotated in the opposite directions, the user can easily recognize the rotation direction. Here, although the ratchet groove 215 and the ratchet protrusion 235 are described in the drawings and description, they are rotated counterclockwise, but may be designed to rotate in the opposite direction.

When the rotation is completed in this way, the suction passage hole 222 of the needle holder 210 and the filter hole 231 of the ending cap 230 is in a state of matching. In this state, when the piston is operated forward to inject the injection liquid into the patient, foreign matter (glass fragments, etc.) by the filter 240 when the injection liquid is discharged through the filter hole 231 and the suction passage hole 222 as shown in FIG. 8. ) Is filtered to prevent foreign substances from entering the human body.

At this time, when the injection liquid is injected into the patient by pressing the piston (not shown) to operate, even if the filter pressure acts as the injection liquid passes through the filter 240, there is no great inconvenience in the injection of the injection liquid.

제2 실시예의 주사기용 필터부재Syringe filter member of the second embodiment

11 is a perspective view of a main portion of the filter element for a syringe according to the second embodiment of the present invention, which is a state diagram when the injection liquid is sucked, and FIG. 12 is a perspective view of the main portion of the filter element for a syringe according to the second embodiment of the present invention. This is a state diagram when discharging the injection liquid.

11 and 12, the filter element for the syringe according to the second embodiment of the present invention is the same as the first embodiment, the difference from the first embodiment is the suction passage hole in the middle block 220 ( 222 and the discharge passage hole 223 is formed, a filter 240 for blocking the discharge passage hole 223 is installed on the rear of the middle block 220, the filter 240 is the middle block 220 The difference is that the discharge passage hole 223 of the rear and the filter seating groove 224 formed around the end, the front end of the end cap 230 is formed only the communication hole 232 without the filter hole 231. In addition, since the other structure is the same as that of 1st Example, detailed structure description is abbreviate | omitted.

According to this configuration, as shown in FIG. 11, when the injection liquid is sucked into the syringe 100, the suction passage hole 222 of the middle block 220 coincides with the communication hole 232 of the ending cap 230. On the contrary, when the injection solution is injected into the human body, the end cap 230 may be rotated to match the discharge passage hole 223 of the middle block 220 with the communication hole 232 of the end cap 230.

The present invention is not limited to the above-described embodiment, but can be implemented in various forms of embodiments within the scope of the appended claims. Without departing from the gist of the invention claimed in the claims, it is intended that any person skilled in the art to which the present invention pertains falls within the scope of the claims described herein to various extents which can be modified.

Claims

As the filter element 200 for the syringe coupled to the front of the cylinder 110 of the syringe 100,

A needle holder 210 having a needle 211 coupled to the front, an opening rear, and having a first mounting portion 212 and a second mounting portion 213 connected to the rear side in the rear;

A middle block 220 embedded in the first installation part 212 of the needle holder 210 and formed such that a suction passage hole 222 through which the suction liquid passes is passed in the axial direction;

The front is inserted into the second installation portion 213 in a rotatable state, and the rear of the cylinder 110 of the syringe 100 is opened to be fitted, and the front surface of the second mounting portion 213 is selectively connected to the suction passage hole 222. An ending cap 230 in which the filter hole 231 and the communication hole 232 communicate with each other; And

A filter 240 blocking the filter hole 231 of the ending cap 230;

Filter member for a syringe comprising a.
The method of claim 1,

The filter member for a syringe, characterized in that the filter seating groove 233 is formed in the filter hole 231 and the periphery of the front end of the end cap 230 is seated.
As the filter element 200 for the syringe coupled to the front of the cylinder 110 of the syringe 100,

A needle holder 210 having a needle 211 coupled to the front, an opening rear, and having a first mounting portion 212 and a second mounting portion 213 connected to the rear side in the rear;

A middle block 220 embedded in the first installation part 212 of the needle holder 210 and formed such that the suction passage hole 222 and the discharge passage hole 223 through which the inhaled injection liquid passes, are axially penetrated;

A filter 240 blocking the rear of the discharge passage hole 223; And

A front is inserted into the second installation part in a rotatable state, and a rear side thereof is opened to fit the cylinder 110 of the syringe 100, and a front side of the suction passage hole 222 or the discharge passage hole 223. And an end cap 230 in which a communication hole 232 is selectively communicated with;

Syringe filter member comprising a.
The method of claim 3,

The filter member for the syringe, characterized in that the filter seating groove 224, the filter 240 is seated in the discharge passage hole 223 and the periphery of the back of the middle block 220 is formed.
The method according to claim 1 or 3,

A ratchet protrusion 235 is formed on the front outer circumferential surface of the ending cap 230, and the ratchet protrusion 235 is inserted into the inner wall of the second mounting portion 213 of the needle holder 210 to allow only one direction rotation. The ratchet groove 215 is formed, the filter element for a syringe, characterized in that formed.
The method according to claim 1 or 3,

At least one key groove 221 is formed on an outer circumferential surface of the middle block 220, and a key 214 inserted into the key groove 221 is formed on an inner wall of the first installation part 212 of the needle holder 210. Syringe filter member, characterized in that.