KR200391370Y1 - A safe syringe - Google Patents

Abstract

The present invention relates to a safety syringe. The present invention is formed inside the space portion can store the injection liquid and one side is a cylinder (1) forming the injection liquid discharge portion 10, the push rod inserted into the inside of the cylinder (1) sliding longitudinally ( 2) and the piston (3) coupled to the upper portion of the rod (2) so that the push rod (2) is in airtight contact with the cylinder (1), and is mounted on the top of the cylinder (1) to fix the injection needle (4) In the syringe configured to include a needle fixing portion 5, the needle fixing portion 5 includes a plurality of locking legs 50 provided with a locking projection 51, the push rod ( The upper part of the 2) protruding the locking portion 23 is formed with a locking groove 26 in the inner side, and the needle fixing portion 5 and the push rod by the combination of the locking projection 51 and the locking groove 26. Combination of the (2) is made, and pulling the rod (2) in the opposite direction to the injection liquid discharge portion 10 to fix the needle (4) Needles in and characterized in that the section (5) configured to be drawn into the cylinder (1).

Description

{A safe syringe}

The present invention relates to a safety syringe, and more specifically, after using a disposable syringe, the needle is recovered to a space in the cylinder and then discarded to prevent reuse of the syringe, and the used needle is exposed to the outside to allow the user to dispose of the syringe. The present invention relates to a safety syringe for preventing an accident from a needle.

In general, disposable syringes should not be reused to prevent secondary infection, and once used syringes should be discarded.

A typical disposable syringe is to be discarded by capping the needle once it is used by the patient. In the process of re-capping the needle used in the above, the handler may be stuck in the needle, and in the process of disposing of the syringe, the cap on the needle may be separated and the waste handler may be stuck in the needle. have.

As described above, a medical staff or a syringe waste processor may be stabbed into a syringe used once, and the patient's disease may be infected by the blood of the patient, and such cases are actually reported.

As a prior art devised to supplement the above conventional problems, a "disposable syringe" according to Korean Utility Model Application No. 20-2000-0009878 has been proposed.

According to the above prior art, a method of discarding a syringe after inserting a used needle into a cylinder is proposed. However, the coupling method of the needle and the push rod for inserting the needle into the cylinder in the prior art had a problem that can not be firmly coupled and can be easily removed. In addition, even after the needle is inserted into the cylinder by combining the needle and the push rod, if the pusher pushes the push rod by mistake, there is a problem that the needle entering the cylinder is exposed to the outside again.

Therefore, the present invention was devised to solve the above-described problems of the prior art, and the needle used to prevent secondary infection of the used syringe was introduced into the cylinder so that the needle was not exposed to the outside. The inlet needle is intended to provide a safety syringe configured to bend the direction of the needle so that it is not exposed again to the outside.

In order to achieve the above object, the present invention is a cylinder formed inside the space portion to store the injection liquid and one side forming the injection liquid discharge portion, the push rod is inserted into the inside of the cylinder sliding longitudinally, and A syringe comprising a piston coupled to an upper portion of a push rod so that the push rod is in airtight contact with a cylinder, and a needle fixing part mounted to an upper portion of the cylinder to fix a needle, wherein the needle fixing part includes a locking protrusion. It is configured to include a plurality of engaging legs, the upper portion of the push rod is a locking portion protruding the engaging groove formed on the inside, the combination of the locking projection and the locking groove is made of the needle and the fixed portion of the push rod, When the rod is pulled in the direction opposite to the injection portion, the needle fixing portion for fixing the needle And configured to be drawn into the linder.

Preferably, the center of the engaging portion has a central pin protruding to a predetermined length, the lower portion of the needle fixing portion forms a center pin coupling groove, the center pin coupling groove two eccentric induction projections The distance between the opposite eccentric induction protrusions is smaller than the diameter of the conical center pin lower diameter so that the diameter of the conical center pin is gradually increased when the center pin is inserted into the center pin coupling groove. It is characterized in that the center pin is slid to the other side without the eccentric induction projection hanging and eccentrically coupled to the center pin coupling groove.

Preferably, the upper portion of the engaging leg formed on the needle fixing portion is provided with a coupling protrusion, the injection liquid discharge portion is provided with a needle fixing portion coupling groove at a position corresponding to the coupling protrusion when combined with the needle fixing portion, The needle fixing part is fixed to the injection liquid discharged part by engaging the coupling protrusion in the needle fixing part coupling groove.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view schematically showing the configuration of a safety syringe according to an embodiment of the present invention, Figure 2 is a front sectional view of the assembled state.

As shown in Figure 1 or 2, the safety syringe according to the present invention has a space portion therein, and one side has an injection liquid discharge portion 10 and the other side is a cylinder (1) configured in an open form and And a push rod 2 inserted into the cylinder 1 to slide in the longitudinal direction of the cylinder 1 and mounted on an upper portion of the push rod 2 to be in airtight contact with the cylinder 1. A piston 3 forming a state, a needle fixing part 5 mounted on an upper portion of the cylinder 1 to fix the needle 4 and including a plurality of locking legs 50, and the needle It comprises a needle protective cap (6) to protect (4).

The cylinder 1 has a space formed therein, one side of the cylinder 1 has an injection liquid discharge part 10 having an injection liquid moving groove 11 is formed in a stepped shape, and the other side is a push rod 2 In the sliding direction of the inside of the cylinder 1 in the longitudinal direction, the opening 15 is formed so that a user can push and push the pusher 2, and is opened. In the stepped form injection liquid discharge portion 10 is formed including a needle fixing portion coupling groove 14 for coupling with the needle fixing portion (5). In the above, the flange 12 protrudes around the opening 15 of the cylinder 1 so as to hook a finger, and when the injection liquid is injected, the thumb 12 pushes the lower plate 21 of the rod 2 with the thumb. The stop finger was placed on the flange 12 of the cylinder 1 to prevent the cylinder 1 from being pushed during the injection of the injection liquid.

In the process of sucking liquid such as injection liquid or blood into the cylinder 1, an operation of pulling the push rod 2 inserted into the cylinder 1 is required. At this time, the separation stop 13 is formed at a position close to the inner opening 15 of the cylinder 1 so that the push rod 2 is not separated from the cylinder 1, and the separation stop 13 is a push bar 2. It is configured to engage with the top plate 22 provided at the upper end of the push rod 2 in the pulling operation.

The push rod 2 is inserted to allow the slide movement along the space in the cylinder 1 and fills and stores the injection liquid in the space in the cylinder 1, or discharges the stored injection liquid 1 out of the cylinder 1. In charge. The piston (3) is formed on the upper portion of the pusher (2) to form an airtight contact with the cylinder (1) so that the suction or compression force is generated in the process of inhaling or discharging the injection into the cylinder (1) . In addition, a piston fixing protrusion 27 is provided at a portion where the piston 3 is coupled to the rod 2 so that the piston 3 coupled to the rod 2 is not easily separated.

The upper portion of the pusher (2) has a locking portion 23 is protruded in the center of the piston 3 is coupled is configured to catch the locking projection 51 provided in the needle fixing portion (5). This is a configuration for preventing the secondary infection which is the object of the present invention by introducing the discarded needle 4 and the needle fixing portion 5 for fixing it into the cylinder (1). The locking portion 23 is provided with a locking groove 26 on the inner side, and preferably has an upper surface protruding in a circular shape.

In the center of the locking portion 23, a conical center pin 24 protrudes to a predetermined length. The center pin 24 has a coupling which is eccentric in the center of the needle fixing portion 5 when combined with the center pin coupling groove 56 provided in the needle fixing portion 5 and thereby the needle fixing portion (5) has a shape in which the center is inclined to one side. When the needle 4 is introduced into the cylinder 1 while the center of the needle fixing portion 5 is inclined to one side as described above, the direction of the needle is bent to the wall surface of the cylinder 1 and the injection liquid discharge part 10 It is configured to prevent the needle from coming out. The process in which the center pin 24 is eccentrically coupled to the needle fixing part 5 will be described in detail again through the operation description.

The pusher 2 has a lower plate 21 at the lower end of the pusher 2 so that the user pushes the pusher by applying force to the pusher 2 in the process of discharging the injection liquid filled in the space in the cylinder 1 to the outside. The upper plate 22 is formed on the upper portion of the rod 2 so that the cylinder 1 and the rod 2 are not separated in the operation of pulling the rod 2 inserted into the cylinder 1, such as by sucking the injection liquid. The upper plate 22 is caught by the release prevention jaw 13 of the cylinder 1 so that the cylinder 1 and the push rod 2 are not separated.

In addition, after the needle holder 5 is introduced into the cylinder 1 through the locking portion 23 of the push rod 2, the volume of the waste syringe is reduced and the push rod 2 cannot be pushed back into the cylinder 1. The push rod 2 formed a push rod cutting groove 25 to break the push rod 2 and discard it.

3 is a perspective view schematically showing a needle fixing part according to an embodiment of the present invention.

In the center of the needle fixing portion 5 is provided with a needle coupling groove 53 in the longitudinal direction to configure the needle 4 is fixed. The lower part of the needle fixing part 5 includes a plurality of hook legs 50, and the needle fixing part coupling groove 14 provided in the injection liquid discharge part 10 at the upper part of the hook leg 50. It is provided with a coupling protrusion 52 for coupling with, the lower portion is provided with a locking protrusion 51 to be coupled to the locking portion 23 of the push rod (2). Preferably, the number of the hanging legs 50 is characterized in that consisting of four.

The body portion 54 connecting the needle 4 and the hook leg 50 in the needle fixing portion 5 is stepped so as to correspond to the injection liquid discharge portion 10 formed in the stepped state of the cylinder 1. Take form. The bottom surface of the body portion 54 forms a center pin coupling groove 56 to be coupled to the center pin 24, and the center pin coupling groove 56 faces two eccentric guide protrusions 55 facing each other. Equipped with. The distance between the eccentric induction projections 55 facing each other is formed to be smaller than the diameter of the lower conical center pin 24 provided in the locking portion (23). That is, when the conical center pin 24 is inserted into the needle fixing unit coupling groove 14, the center pin 24 is not precisely coupled to the center by the eccentric guide protrusion 55, and slips to any one side without the eccentric guide protrusion 55. Make eccentric coupling

The needle fixing part 5 is introduced through the opening 15 of the cylinder 1 when assembled with the cylinder 1, and is coupled to correspond to the step formed in the injection liquid discharge part 10 on the upper part of the cylinder 1. . At this time, the needle fixing part 5 by the coupling of the needle fixing part coupling groove 14 provided in the injection liquid discharge part 10 and the engaging protrusion 51 formed on the locking leg 50 of the needle fixing part 5. ) Is fixed to the injection liquid discharge unit (10).

The needle protection cap 6 prevents the user from being stuck by the needle by exposing the needle 4 to the outside, and protects the needle 4 by covering the cap so as not to bend the needle and the foreign matter. Function.

Hereinafter, the process of using the safety syringe according to an embodiment of the present invention.

First, after removing the covered needle protection cap 6 to protect the needle 4, the needle 4 is immersed in the injection liquid and the injection liquid is sucked and filled into the cylinder 1. At this time, the injection liquid moving groove 11 by the piston (3) to form a state in the airtight contact with the cylinder 1 by pulling the push rod (2) inserted into the cylinder (1) in the direction opposite to the injection liquid moving groove (11). Suction force occurs. Dosing process is performed by inserting the needle (4) of the syringe filled with the injection solution into the patient's skin. At this time, if the push rod (2) of the syringe is pushed toward the injection hole (11), the pressure inside the cylinder (1) is increased. Injection liquid is discharged through the injection liquid moving groove (11). Since the procedure of using the syringe as described above is the same as the conventional syringe, the detailed description thereof will be omitted.

Figure 4 is a partial cross-sectional view schematically showing the combination of the needle fixing portion and the engaging portion according to an embodiment of the present invention, Figure 5 is a partial cross-sectional view for the bottom view, Figure 6 is a perspective view showing a partial cross-sectional state to be.

In the process of discharging the injection liquid filled in the cylinder 1 of the syringe outside, the catching portion 23 provided on the upper portion of the rod 2 before the push rod 2 touches the injection liquid discharge portion 10 of the cylinder 1. And a plurality of fixed legs 50 provided in the needle fixing part 5. At this time, if the push rod 2 is pushed further, a plurality of locking legs 50 made of a plastic material are inserted with the contracting force acting into the locking portion 23, and the locking legs 50 are engaged with the locking portion ( 23) is bent into the engaging projection 52 provided on the upper part of the locking leg 50 is separated from the needle fixing part coupling groove (14). The locking leg 50 inserted into the locking portion 23 is coupled so that the locking protrusion 51 configured at the bottom thereof is caught by the locking groove 26 provided inside the locking portion 23 and cannot be separated. Preferably, the locking protrusions 23 formed at the lower portion of the locking leg 50 are formed in an inclined shape to be narrowed downward so that the locking leg 50 may be easily inserted into the locking portion 23.

In the center of the engaging portion 23 is formed a conical center pin 24 corresponding to a predetermined length. The center pin 24 is coupled to the center pin coupling groove 56 provided in the bottom portion of the needle fixing portion (5). However, two eccentric induction protrusions 55 face each other in the center pin coupling groove 56 so that the center pin 24 cannot be coupled to the center of the center pin coupling groove 56 and the eccentric induction protrusion 55 is provided. It is configured to be coupled to either side without. In more detail, the distance between the eccentric induction projections 55 is smaller than the diameter of the conical center pin 24 lower diameter conical shape is gradually widened when the center pin 24 is inserted into the center pin coupling groove (56). The diameter of the eccentric induction projections 55 is caught, the center pin 24 is slid to the other side without the eccentric induction projections 55 and is eccentrically coupled to the center pin coupling groove (56). In the above, the needle fixing part 5 is bent in the opposite direction in which the center pin 24 is inserted, but the needle fixing part 5 is bent unless the push rod 2 is pulled in the direction opposite to the injection liquid discharge part 10. It is only configured to act as a force to be fixed to the injection liquid discharge portion 10 of the cylinder 1 is configured to be unable to move.

7 is an operating state diagram schematically showing a process of introducing the needle fixing unit into the cylinder according to an embodiment of the present invention.

As shown in FIG. 7, when the push rod 2 is pulled in the direction opposite to the injection liquid discharge unit 10, the hook leg 23 of the push rod 2 and the needle fixing unit 5 of the push rod 2 are pulled out. Is fixed by the locking protrusion 51 and the locking groove 26, the needle fixing portion 5 is also drawn into the cylinder 1 in the direction of the pushing rod (2).

The needle fixing portion 5 introduced into the cylinder 1 is shifted from the center by the eccentric guide protrusion 55 when the center pin 24 of the push rod 2 is coupled to the center pin coupling groove 56. The needle fixing part 5 coupled to the eccentric state and including the needle 4 is bent to the wall surface inside the cylinder 1. That is, even if the push rod 2 is pushed again, the needle 4 is not allowed to come out.

8 is a schematic view illustrating an operation of cutting a straw when disposing of a safety syringe according to an embodiment of the present invention.

After inserting the needle holder 5 into the cylinder 1, the volume of the syringe is reduced when discarded, and the pusher cutting groove 25 provided in the pusher 2 does not push the pusher 2 back into the cylinder 25. It was configured to be discarded after cutting the straw (2) by the).

Although the technical idea of the present invention has been described with reference to the accompanying drawings, this is for illustratively describing the best embodiments of the present invention and is not intended to limit the present invention. In addition, it is obvious that any person having ordinary skill in the art may make various modifications and imitations without departing from the scope of the technical idea of the present invention.

As described above, the safety syringe according to the present invention has the following effects.

First, since the syringe is disposed of after the injection needle is used into the cylinder, the needle is exposed to the outside, and the syringe handler and the waste processor have an effect of eliminating the fear of infection by the needle.

Second, since the needle once inserted into the cylinder can not be exposed to the outside again, there is also the effect of preventing the possibility of being stuck to the needle in the disposal of the used syringe.

Third, there is also an effect that can reduce the volume of waste by separating and discarding the straw during the disposal of the syringe.

Fourth, in the process of introducing the needle fixing portion for fixing the needle into the cylinder there is also an effect that the coupling of the rod and the needle fixing portion is firmly combined without loosening compared to the prior art.

Fifth, in providing a safe syringe that can prevent secondary infection, the production is easy, and there is an effect that the safety of the syringe handler can be promoted with a low production cost.

1 is an exploded perspective view schematically showing the configuration of a safety syringe according to an embodiment of the present invention,

Figure 2 is a front sectional view showing the assembled state of the safety syringe according to an embodiment of the present invention,

3 is a perspective view schematically showing a needle fixing part according to an embodiment of the present invention,

Figure 4 is a partial cross-sectional view schematically showing the combination of the needle fixing portion and the engaging portion according to an embodiment of the present invention,

Figure 5 is a partial cross-sectional view of the bottom view of the needle pin and the center pin of the engaging portion coupled,

6 is a perspective view showing a partial cross-sectional state of the combination of the needle fixing portion and the engaging portion,

7 is an operating state diagram schematically showing a process of introducing a needle fixing unit into the cylinder according to an embodiment of the present invention,

8 is a schematic view illustrating an operation of cutting a straw when disposing of a safety syringe according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

DESCRIPTION OF SYMBOLS 1 Cylinder 10 Injection liquid discharge part 11 Injection liquid moving groove

12: flange 13: separation prevention jaw 14: needle coupling part coupling groove

15: opening part 2: pusher 21: bottom plate

22: top plate 23: engaging portion 24: center pin

25: pusher cutting groove 26: locking groove 27: piston fixing protrusion

3: Piston 4: Needle 5: Needle Fixing Part

50: hook leg 51: hook protrusion 52: coupling protrusion

53: needle coupling groove 54: body portion 55: eccentric guide protrusion

56: center pin coupling groove 6: needle protection cap

Claims (3)

The interior is formed into a space portion can store the injection liquid and one side is the cylinder (1) forming the injection liquid discharge portion 10, the push rod (2) is inserted into the inside of the cylinder (1) and sliding in the longitudinal direction; A piston (3) coupled to the upper portion of the rod (2) such that the rod (2) is hermetically in contact with the cylinder (1), and an injection mounted on the upper portion of the cylinder (1) to fix the needle (4) In a syringe comprising a needle holder (5), The needle fixing part 5 is configured to include a plurality of locking legs 50 having a locking protrusion 51, A locking portion 23 having a locking groove 26 formed therein protrudes from an upper portion of the rod 2. When the locking projection 51 and the locking groove 26 is combined, the needle fixing portion 5 and the push rod 2 are coupled, and when the push rod 2 is pulled in the direction opposite to the injection liquid discharge unit 10, A safety syringe, characterized in that the needle fixing portion (5) holding the needle (4) is configured to be drawn into the cylinder (1). The method of claim 1, The center pin 24 is protruded to a predetermined length in the center of the locking portion 23, The lower portion of the needle fixing portion 5 is formed with a center pin coupling groove 56, In the center pin coupling groove 56, two eccentric guide protrusions 55 face each other, The distance between the opposite eccentric induction projections 55 is smaller than the diameter of the lower conical center pin 24 conical shape of the conical shape is gradually wider when the center pin 24 is inserted into the center pin coupling groove (56). The center pin 24 is caught by the eccentric induction protrusion 55, the center pin 24 is slid to the other side without the eccentric induction protrusion 55, and is characterized in that it is coupled to the center pin coupling groove 56 eccentrically coupled syringe. The method of claim 1, The upper portion of the engaging leg 50 formed on the needle fixing part 5 is provided with a coupling protrusion 52, The injection liquid discharge part 10 is provided with a needle fixing part coupling groove 14 at a position corresponding to the coupling protrusion 52 when combined with the needle fixing portion 5, Safety needle, characterized in that the needle fixing part (5) is fixed to the injection liquid discharge part (10) by the engaging projection (52) is caught in the needle fixing part coupling groove (14).