JP2003505161A - Safety syringe - Google Patents

Abstract

SUMMARY OF THE INVENTION The present invention relates to a cylinder (11), a syringe needle (21), a needle holder (31) coupled to a cylinder and adapted to hold a syringe needle, and coupled to a cylinder (11). A safety syringe having a plunger (41) provided therein, said plunger (41) comprising a piston (42) for injecting the filling of the cylinder (11) via a syringe needle (21), 41) is arranged in the area of the front hole (12) of the cylinder (11) to pull the needle holder (31) together with the syringe needle (21) into the cylinder (11) by pulling the plunger (41). It can be connected with a needle holder (31).

Description

Detailed Description of the Invention

TECHNICAL FIELD The present invention relates to a safety syringe having a cylinder, a syringe needle, a needle holder coupled to the cylinder and adapted to hold the syringe needle, and a plunger coupled to the cylinder. Is equipped with a piston and injects the filling of the cylinder via a syringe needle.

SUMMARY OF THE INVENTION The present invention provides a syringe having the features of claim 1. The feature of claim 2 is proposed for particularly high security. Also with respect to safety, advantages are obtained with the features of claim 3 or alternatively claim 4. Connecting the plunger to the needle holder,
Substantial advantages are further obtained from at least one of the features of claims 5 to 8 relating to fixing the needle holder to the cylinder in the region of the front hole of the cylinder. Other possible features of the syringe according to the invention which give further advantages can be found in the following specification and / or drawings.

A first embodiment showing a syringe according to the first aspect of the invention is shown in FIGS. 1 to 11.

A second embodiment showing a syringe according to the second aspect of the invention is shown in FIGS.
Shown in.

The first and / or second embodiments show further aspects of the invention.

In the following, a safety syringe according to the first and further aspects of the invention will be described.

The device relates to a safety syringe that prevents a third party from being damaged by the used syringe needle. The syringe needle is configured to maintain the protection of the syringe cylinder once used, and no third party is stabbed with the used needle.
The plunger is then broken after use to prevent it from being used again.

[0008] To largely prevent repeated use of syringe needles, it is now becoming mainstream to use disposable syringes. Such conventional disposable syringes are technically constructed to prevent reuse.

However, conventional disposable syringes, after being used, are usually or often treated or improperly handled with a needle and thus can easily pierce a third party. Such problems that damage third parties have not been resolved.

[0010] Since syringe needles are always contaminated with blood, when medical personnel, including doctors and nurses, and third parties are stabbed with the syringe needles used, they will be ill to the patient (AIDS, hepatitis). Etc.), and such cases have been reported.

The device is a safety syringe system that keeps the used syringe needle inside the syringe cylinder to prevent illness from infecting a third party through the used syringe needle.

According to the device, the used needle does not have to be removed from the syringe after use, but instead the used needle is fixed inside the cylinder for storage and retention, so that Be drawn into. And by doing so, it is possible to prevent the transmission of illness to a third party due to being stabbed.

BACKGROUND ART The previous patent application by the applicant of this property related to the safety syringe system is Korean Utility Model Publication No. 91-4532 and Korean New Utility Model Publication No. 96-13.
No. 409 publication.

The device proposes a safer syringe system which is simpler in construction, more reliable in effectiveness and more advanced than the previous patents mentioned above.

[0015]   The technical problems to be achieved by this device are as follows.

[0016] The applicant's conventional safety syringe system disclosed regarding utility model publication Korean Utility Model Publication No. 91-4532 and Korean New Utility Model Publication No. 96
Applicant's prior safety syringe system, published in US-A-13409, has a needle set fixed to a plunger, the syringe needle being held inside a cylinder when the plunger is withdrawn. You can

The disposable syringes filed as described above have several drawbacks, requiring a large number of parts and great precision, which makes them difficult to manufacture. This device was developed instead. The device is simpler in structure, easier to manufacture, eliminates the possibility of misuse and achieves with a smaller number of parts.

[0018]     (Example)   In the following, reference is made to FIGS.

[0019]   The structure and operation of the device are as follows.

The device has a cylinder for injection. Inside the cylinder are the piston and the plunger. In syringes where the closed end of the cylinder normally has a syringe needle attached, the cylinder (11), syringe needle (21), syringe needle inserter (31), and plunger (41) are components. At the end of the insertion hole of the cylinder there are a number of protrusions (13) in which laterally carved grooves are arranged. On the inside surface of the cylinder, at the rear end there is a stop sill (15) and an obstacle (
Hooking? I have a sill. At the center of the syringe needle inserter (31) is the syringe needle retainer (32). On the outer surface (33) of the barrel-shaped syringe needle retainer (32) there are a number of "¬" shaped grooves (34) for receiving the protrusions (13). Packing (
35) is located behind it. Inside the rear end there are protrusions (36) projecting on the top and bottom. Inside the above-mentioned both up / down protrusions, a ring
An obstacle (hooking) inside the stopper (37) is formed. At the tip of the plunger (41) into which the piston (42) is inserted is the top / bottom connector (43) with a hooking sill (43 '). There are upstanding protrusions (44 ') on both sides of the central protrusion (44). A space (47) is formed at the end of the plunger (41) into which the piston (42) is inserted. Push button () on the rear of the plunger (41)
48) has an insertion groove (48 '). The insertion groove (48 ') is for a cap (49) inserted to cover the insertion hole (12) at the tip of the cylinder.

In order to easily break the plunger (41), there are many “V” shaped grooves or holes in the front part of the plunger (41), and the piston (42) of the plunger (41).
A stop ring sill (50) is formed at the rear of the.

[0022]   The present device having such a configuration operates as follows.

In the cylinder (11) and the syringe needle inserter (31), the protrusion (13) on the inner surface of the cylinder (11) insertion hole (12) is formed on the outer surface of the barrel-shaped needle inserter (31). They are joined together by pushing the needle inserter (31) from the rear end of the cylinder (11) into the inside of the cylinder until it comes into contact with and is installed in the "" shaped groove.

Then, the piston (42) inserted in the plunger (41) is
11) is pressed from the rear side. Immediately before use of the syringe, the syringe needle (21) is fixed in the syringe needle inserter (31) as usual. The injection liquid is sucked into the cylinder (11) by pulling the plunger backward. The injection is made to the patient by pushing the plunger (41).

When the syringe needle inserter (31) is fixed to the cylinder (11) from the rear toward the inside, the protrusion (13) of the insertion hole (12) of the cylinder has the syringe needle inserter (3).
It must be pressed until it is installed towards the perimeter of the "¬" shaped groove of 1). At this time, the notched groove between the protrusions (13) helps the syringe needle inserter (31) to enter the cylinder (11) by expanding the tip of the cylinder (11) and opening the syringe needle inserter. The container (31) can be easily installed.

A stop sill (15) on the inner surface of the cylinder (11) contacts the posterior tip of the syringe needle inserter (31). The packing (35) inserted in the syringe needle inserter (31) is
It is closely adhered to the inner surface of the cylinder (11).

To secure the syringe needle inserter (31) to the tip of the cylinder (11), the syringe needle inserter (31) is inserted into the insertion hole (12) at the tip of the cylinder (11) by force. , The protrusions (13) on the inner surface of the cylinder (11) are retained in any of the "¬" shaped grooves (34) on the outer surface of the syringe needle inserter (31), i.e. at any position in the circumferential direction. The syringe needle is inserted into the syringe needle inserter (31) and rotated,
The upright projection (13) in the insertion hole (12) of the cylinder (11) is provided as soon as the syringe needle is fixed so that the syringe needle inserter (31) will rotate accordingly when locked. And is placed in the immediately preceding "¬" shaped groove.

Furthermore, the contact location of the “¬” shaped groove is not flat, but “U” or “^” shaped, and the protrusion (13) of the cylinder (11) has an edge between the “¬” shaped grooves. It cannot be placed in a department.

Thus, the syringe needle inserter (31) and the syringe needle are fixed to the tip of the cylinder (11), and the plunger (41) is pressed into the cylinder (11) to complete the syringe assembly. When the plunger (41) is pulled back, the syringe draws the injection liquid into the cylinder (11). When the injection is complete, withdraw the needle (21) from the patient (see Figure 9) and then forward (see Figure 10) the plunger (
When a force is applied to push 41), the piston (42) has a smaller volume due to the space (47) formed inside the piston (42),
The piston (42) is pressed, at which time the respective hooking sill (43 ') of the upper and lower connecting device (43) with the plunger (41) formed up and down has a rear syringe needle inserter (43). 31) inner obstacle ring sill (3)
7) and the plunger (41) tip and syringe needle inserter (31) rear part are connected together. When the plunger (41) is rotated, the upstanding protrusions (44 ') on both sides of the central protrusion (44) at the tip of the plunger have up / down protrusions (36) on the rear inner surface of the syringe needle inserter (31). ), A rotating plunger (41) rotates the syringe needle inserter (31).

The syringe needle inserter (31) rotated by the plunger (41) also
¬ "shaped groove (34) is rotated and then the protrusion (13) of the cylinder (11)
Rotates in a straight "¬" shaped groove (34). When the plunger is pulled back, the protrusion (13) is pushed forward along the straight “¬” shaped groove, while at the same time the needle inserter (31) as well as the syringe needle (21) inserted therein is , Cylinder (1
It is pushed back inside 1).

The backtracking plunger (41) is a plunger ring sill (4
0) is pulled back until the hooking sill (16) is reached and then the plunger (41) is broken. Then, all operations are terminated by inserting the cap (49), which is inserted into the pressing hole (48) in the insertion hole (12) in front of the cylinder (11), to another place.

The insert retention in the cap (49) is arranged by a ring (circular) sill, and the ring sill of the cap (49) insertion hole is the protrusion (13) of the insertion hole (12) of the cylinder (11). Therefore, the cap inserted into the insertion hole (12) cannot be easily removed.

[0033]   The operation of this device is as follows.

The device is configured to retain the used syringe needle in the body of the syringe, which is the inner cylinder, so that the medical personnel, including doctors and nurses, will be stabbed by the used syringe needle. , As well as prevent possible damage to third parties.

Due to the sharp tip of the needle, the syringe must be handled with great care before and after use. Special attention needs to be paid to the used one due to blood stains. In particular, hepatitis and AIDS can infect third parties via blood stains, so syringes often used in patients with such illness must be handled with special care.

However, if the used syringe needle is inserted into the cylinder and then the plunger is broken, as described in the present device, the syringe needle is placed inside the cylinder. If the cylinder is covered with a prepared cap behind the plunger, there is no possibility that the syringe needle inside the cylinder is exposed outside the cylinder and it can be kept protected and safe until further steps . With this device,
The used syringe cannot be reused. Therefore, it is a very useful device because it can prevent a disease caused by the used syringe needle from infecting a third party.

The device is used to prevent possible injuries to medical personnel, including doctors and nurses, and similarly conceivable third parties from being pierced by used syringe needles. It is configured to hold the needle inside the cylinder to prevent reuse of used syringe needles. The syringe needle fixed in the syringe needle fixing device is installed at the tip of the cylinder with the help of a syringe needle inserter.

The part to be inserted is formed on the protrusion of the tip of the plunger placed in the cylinder. An assembly is formed at the rear end of the syringe needle retainer. The protrusion of the plunger connects to the syringe needle retainer. When the plunger is retracted, the syringe needle retainer with its fixed needle is also retracted and held inside the cylinder. Therefore, the damage due to the used syringe needle can be prevented. The device is a safety syringe that can prevent the transmission of diseases such as hepatitis and AIDS.

Some important aspects of the safety syringe according to the first embodiment are:

The safety syringe has a cylinder for sucking in the injection. The piston and plunger are in a cylinder, whereas a typical syringe has a syringe needle attached to the syringe, the device of which the cylinder (11) is
It has a syringe needle (21), a syringe needle inserter (31), and a plunger, respectively. The insertion hole (16) at the tip of the cylinder (11) has a large number of protrusions (13) and grooves (14) alternately arranged and carved. The inner surface of the cylinder (11) has a rear stop sill and a hooking sill. At the center of the syringe needle inserter is a syringe needle retainer for securing the syringe needle. The outer barrel-shaped outer surface of the syringe needle retainer has a number of "¬" shaped grooves for protrusions (13) formed on the inner surface of the insertion hole (12) for internal placement. A packing (35) is installed at the rear. There are protrusions (36) above and below the inner surface of the rear part.
Inside the upper and lower protrusions (16) are hooking ring sills (37). At the tip of the plunger (41) where the piston is inserted, hooking sill (4
There are 3 ') top and bottom splice connectors. Spaces (47) are formed at the tip of the plunger (41) into which the piston is inserted, on both sides of the central protrusion (44) inside the top / bottom joint connection device. The push / push button (48) at the rear end of the plunger (41) has an insertion groove (48 '). It is assumed that a cap (49) is inserted in the insertion groove (48 ') to cover the insertion hole (12) at the tip of the cylinder.

In the following, a safety syringe according to the second and further aspects of the invention will be described.

The device relates to a safety syringe such that after injection, the needle is retracted inside the barrel retainer to prevent piercing another person and the plunger is broken to prevent reuse of the syringe.

In order to prevent the reuse of used syringes, conventional single-use syringes to which technical methods have been applied were common.

However, this conventional syringe holds the needle in the syringe and is left or discarded, so that it may be pierced by the used needle. Therefore, the problem of others being injured by used needles cannot be solved by this syringe.

That is, in this case, some blood is left behind in the needle after injection, and when a doctor, nurse, healthcare worker, or other person sticks into the used needle, it causes the patient's illness (AIDS, hepatitis). Etc.). The example is actually reported.

The device draws the used needle inside the barrel after injection and retains the used needle in the barrel without removing the needle so that the used needle prevents transmission of disease infection. Yes, for safety syringes.

As conventional patent documents relating to safety syringes, Utility Model Publication No. 91-4532 and Utility Model Publication # 96-13 filed and published by the present applicant.
There is a 409 publication. In addition, the present applicant filed a utility model application # 7783 in 1999.
No., filed a utility model for a safety single-use syringe.

The device has a simpler structure and more accurate function than the conventional syringes filed before the present application.

A needle set is secured to the plunger and retracted inside the barrel after injection,
The safety syringes held therein are shown in Utility Model Publication # 91-4632, Utility Model # 96-13409, and Utility Model Application # 7783, filed and published by this application. .

This conventional syringe, which is a utility model filed by the applicant, has a problem in manufacturing because it requires a large number of parts and high precision.
The device was newly developed to overcome its drawbacks, so it requires only a few parts, is simple in structure, easy to manufacture, and eliminates the possibility of malfunction. ing.

[0051]   The following refers to FIGS. 12 to 25.

Device Construction Similar to a typical syringe, it has a barrel into which the drug is drawn, a piston, and a plunger inside the barrel.

The single-use safety syringe comprises a barrel (11), a needle (21), a plunger (41) and a needle insertion device (31) to which the needle (21) is attached. A number of protrusions (13) are inside the front end of the insertion hole (12) of the barrel (11). An annular stop projection (15) is on the inner peripheral surface of the barrel (11). An annular limiting protrusion (16) is at the rear end of the barrel. The needle fixing device (32) for attachment to the needle (21) is in the center of the needle inserting device (31). A number of "¬" shaped female grooves (34) with wide inlets are provided for assembly with the protrusions (13) located on the inner surface of the insertion hole (12) of the cylindrical barrel (11), Located on the outer cylindrical surface (33) of the needle anchoring device (32). An O-ring (35) is inserted behind the groove. Multiple female grooves (37) are inside the needle insertion device (36). A male extension (43), each with a limiting projection (43 '), is at the front end of the plunger (41) assembled with the piston (42). An empty space (47) is at the front end of the plunger (41) assembled with the piston (42). The cutting notch (45) is in the front part of the plunger (41) for easy breakage. The annular stop projection (50) is on the rear part of the plunger (41). The rear stop projection (51) is in the longitudinal center of the plunger. The empty space (53) is longitudinal in the inner center of the plunger (41) between the rear stop protrusion (51) and the cutting notch.

[0054]   The present apparatus having this configuration operates as follows.

The needle insertion device (31) is inserted into the barrel from the rear end of the barrel (11),
A number of protrusions (13) inside the insertion hole (12) of the barrel (11) having a wide inlet on the cylindrical outer surface (33) of the needle insertion device (31), a "¬" shaped groove (34). Is pushed towards the front end until it is assembled with the barrel (11).

The plunger (41) assembled with the piston (42) is then inserted into the barrel from the rear end of the barrel (11) and the needle (21) is inserted into the needle insertion device just before using the syringe. Placed in (31). The plunger (41) is pulled back,
The drug is sucked into the barrel (11) as usual. The drug is injected into the patient's body and the plunger (41) is pushed.

The needle insertion device (31) is inserted into the barrel (11) from the rear end of the barrel (11), is fixed to the barrel, and has a large number of protrusions inside the insertion hole (12) of the barrel (11). The part (13) has a wide entrance on the outer surface (33) of the needle insertion device (31).
The needle insertion device (31) is pushed into the barrel until it reaches the "" shaped groove (34).
In this case, the annular stop projection (15) on the inner surface of the barrel (11) is
31) contacting the rear end of the O-ring (35) inserted into the needle insertion device (31).
) Attaches to the inner cylindrical surface of the barrel (11) and the sealing is completely maintained.

When the needle insertion device (31) is pushed and fixed in the insertion hole (12) at the front end of the barrel (11), the protrusion (13) on the inner peripheral surface of the barrel (11) becomes It is located at the posterior end (groove inlet) of a "¬" shaped female groove (34) with a wide inlet on the outer peripheral surface of the needle insertion device (31). However, the needle (21) has a needle insertion device (31
), When fixed, the male protrusion (13) inside the insertion hole (12) of the barrel (11) is rotated by the needle (21) and the needle insertion device (31) together.
It is located at the end of the "¬" shaped female groove (34).

Therefore, the needle insertion device (31) and the needle (21) are at the front end of the barrel (11) and the plunger (41) is inserted into the barrel (11), completing the assembly of the syringe. The plunger (41) is pulled back, the medicine is sucked into the barrel,
The drug is injected into the patient's body. After the drug is injected into the body, the needle (21) is withdrawn from the body. When additional force is applied to the plunger (41) (Fig. 5),
A piston (42) with an empty space (47) inside is pressed and squeezed. At the same time, each limiting stop projection (43 ') of the fixing device (43) is fixed inside the female groove (37) arranged outside the central hole of the needle inserting device (31), and the plunger (41). The front end of the needle is connected to the rear end of the needle insertion device (31).
Thereafter, when the plunger is rotated, the needle insertion device (31) is also rotated by the plunger.

Accordingly, the “¬” shaped female groove (34) on the outer surface of the needle insertion device (31) rotated by the plunger (41) is also rotated together to form the “¬” shaped female groove (3).
4) The protrusions (13) on the inner peripheral surface of the front end of the barrel (11), which are arranged in the periphery in, are rotated up to the straight line of the "¬" shaped female groove (34). Then, when the plunger (41) is pulled back, the protrusion (13) is moved forward through the female straight line of the "¬" shape, and the needle insertion device (31) having the needle (21) attached at the same time. Are moved back into the barrel (11) and held inside.

The plunger (41) is moved rearward until the plunger annular projection (50) reaches the limiting annular projection (16) of the barrel. The plunger is then broken at the cutting notch (45). Therefore, the broken plunger (42) is inserted into the barrel from the front end of the barrel. In other words, the rear limit stop projection (51) of the plunger (41) until it reaches the inside of the projection (31) located inside the front insertion hole (12) of the barrel (11). Is inserted. The plunger (41) fixed in the insertion hole (12) is not easily pulled back because the rear limit stop projection (51) engages the projection (31) at the front end of the insertion hole.

As a result, the needle insertion device (31) including the needle (21) is completely inserted inside the barrel (11). The needle stored inside the barrel is held safely as the insertion hole (12) is blocked by the broken plunger (41).

Effect of the Device The device prevents the needle used for the patient from being punctured by doctors, nurses and other health care workers as it is inserted inside the barrel and held inside. .

Syringes with sharp needles that should be handled with great care, whether used or not, especially when the syringe is used for a patient and contaminated with blood, must be handled with extreme care. I won't.

Diseases such as hepatitis and AIDS can be transmitted via blood. Therefore, the needles used in such patients should be handled with extreme care.

The present device has the advantage that the needle is safely retained in the barrel because the plunger is broken after the syringe needle is fully inserted into the barrel. The broken plunger is inserted into the barrel through the insertion hole. The insertion hole is blocked by a broken plunger and the needle is retained inside for safe handling.

Thus, this is a useful device that prevents used syringes from being reused and prevents the spread of disease infections.

This prevents the disposable syringe from being reused and allows doctors, nurses, medical personnel, etc. to pierce the used needle by inserting the used needle into the barrel after injection. It relates to a device that prevents things. The needle is mounted in front of the barrel with the needle insertion device. The insert piece is formed on the male extension of the forward end of the plunger that is inserted into the barrel. Also, the connecting piece is made at the rear end of the needle insertion device. The male extension of the plunger is assembled with the needle lock and the needle inserter to which the needle is attached is inserted into the barrel when the plunger is pulled back. The needle insertion device is retained inside the barrel. Therefore, the user is not stabbed by the used needle. As a result, this safety syringe can prevent the spread of disease infections such as hepatitis and AIDS.

Some important aspects of the safety syringe according to the second embodiment are:

The single-use safety syringe is similar to a typical syringe with a barrel into which liquid medication is aspirated, a piston and plunger inside the barrel, and a needle placed at the front tip of the barrel. Barrel (11), needle (21), plunger (41)
), And a needle insertion device (31). Insertion hole (12) of the barrel (11)
A number of protrusions (13) inside the front end of the, a circular stop protrusion (15) on the inner surface of the barrel (11), a circular limiting protrusion (16) inside the rear end of the barrel, a needle insertion device (
31) A needle fixing device (32) for inserting the needle (21) in the center, and a protrusion (13) arranged on the inner surface of the insertion hole (12) of the cylindrical barrel (11). In addition, a number of “¬” shaped grooves (34) with wide entrances on the outer surface (33) of the cylindrical part of the needle fixing device (32), an O-ring (35) behind the groove and a number of insertion grooves ( 37), a plunger (41) to be assembled with the piston (42)
) A connecting device (4) for upper and lower parts having a limiting projection (43 ') at the front end of
3), an empty part (47) at the front end of the plunger (41) assembled with the piston (42), a cutting notch (45) in the front part of the plunger (41) for easy breaking, of the piston (42) A circular stop projection (50) on the front part of the plunger (41) reaching the rear, a rear stop projection (51) in the longitudinal center of the plunger,
And a cutting notch (45) in the center of the plunger from the rear stop protrusion (51)
There is a longitudinal rear stop to the.

[0071]   The differences between the first embodiment and the second embodiment are as follows.

According to the first embodiment, the plunger (41) has a cap (49), which after injection, ie in the syringe (FIGS. 10 and 11) has a needle (
After withdrawing 21), the front hole of the syringe (11) is closed.

According to a second embodiment, the parts of the plunger (11) itself are of the syringe (11) after injection, ie after withdrawing the needle (21) into the syringe (after breaking the plunger). Close the front hole. To close the anterior hole, the plunger part is inserted into the syringe (FIGS. 16 and 18). Therefore, the cost of manufacturing the cap (ie, the cost of preparing the mold) is saved.

In addition to this difference, the general configuration and function of the first and second embodiments is more or less the same.

The terms barrel and syringe are used synonymously herein.
The needle insertion device or needle inserter (31) may also be referred to as a needle holder.

[Brief description of drawings]

[Figure 1]   It is sectional drawing of components.

[Fig. 2]   It is a perspective view of a component.

[Figure 3]   It is a side view of a cylinder.

[Figure 4]   FIG. 9 is a side view of a syringe needle inserter.

[Figure 5]   FIG. 7 is a front view of a syringe needle inserter.

[Figure 6]   FIG. 6 is a sectional view taken along the line AA of FIG. 5.

[Figure 7]   FIG. 6 is a sectional view taken along line BB of FIG. 5.

[Figure 8]   It is a front view of a plunger.

[Figure 9]   FIG. 8 is a cross-sectional view of the device when injection is complete.

FIG. 10 is a cross-sectional view of the device as the plunger contacts the syringe needle retainer upon completion of injection.

FIG. 11 is a cross-sectional view of the device showing pulling the plunger back into the cylinder and then breaking the plunger to retain the syringe needle in the syringe needle retainer inside the cylinder.

[Fig. 12]   FIG. 6 is a partial longitudinal cross-sectional view of a syringe.

[Fig. 13]   FIG. 7 is an isometric enlarged view of the needle insertion device.

FIG. 14   It is a figure of a plunger.

FIG. 15   FIG. 6 is a longitudinal cross-sectional view of a needleless syringe.

FIG. 16 is a longitudinal cross-sectional view of a needleless syringe with a plunger assembled to the needle insertion device.

FIG. 17   FIG. 9 is a partial cross-sectional view showing breaking the plunger after injection.

FIG. 18   FIG. 6 is a longitudinal cross-sectional view of a syringe covered with components separated from the plunger.

FIG. 19   FIG. 6 is a longitudinal view of the needle insertion device.

FIG. 20   It is the sectional view on the AA line in FIG.

FIG. 21   FIG. 13 is another cross-sectional view taken along the line AA in FIG. 12.

FIG. 22   It is the BB sectional view taken on the line in FIG.

FIG. 23 It is the CC sectional view taken on the line in FIG.

FIG. 24   It is the EE sectional view taken on the line in FIG.

FIG. 25   It is the FF sectional view taken on the line in FIG.

[Procedure for Amendment] Submission for translation of Article 34 Amendment of Patent Cooperation Treaty

[Submission date] September 25, 2001 (2001.25)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Contents of correction]

[Claims]

─────────────────────────────────────────────────── ─── Continued front page    (81) Designated countries EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, I T, LU, MC, NL, PT, SE), OA (BF, BJ , CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, GM, K E, LS, MW, MZ, SD, SL, SZ, TZ, UG , ZW), EA (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, C A, CH, CN, CR, CU, CZ, DE, DK, DM , DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, K E, KG, KP, KR, KZ, LC, LK, LR, LS , LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, R U, SD, SE, SG, SI, SK, SL, TJ, TM , TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW

Claims (9)

[Claims] 1. A cylinder (11; 11), a syringe needle (21; 21), a needle holder (31; 3) coupled to said cylinder and adapted to hold said syringe needle.
1) and a plunger (41; 41) connected to said cylinder (11; 11)
), Wherein the plunger (41; 41) comprises a piston (41;
42; 42) and through the syringe needle (21; 21) the cylinder (11
11) by injecting the filling material, and the plunger (41; 41) pulls the plunger (41; 41) to bring the needle holder (31; 31) into a syringe needle (
21; 21) for connection with the needle holder (31; 31) arranged in the region of the front hole (12; 12) of the cylinder (11; 11) for withdrawal into the cylinder (11; 11). A safe syringe that can. 2. The plunger (41; 41) allows reuse of the syringe,
Syringe according to claim 1, characterized in that it has a predetermined breaking point so that it can be prohibited by breaking the plunger (41; 41). 3. The plunger (41; 41) carries a cap (49), the cap of the cylinder (11) after withdrawing the syringe needle (21) into the cylinder (11). Syringe according to claim 1 or 2, characterized in that it can be inserted into the anterior hole (12). 4. The plunger (4) after breaking the plunger (41).
The component of 1) can be inserted into the front hole (12) of the cylinder (11) after withdrawing the syringe needle (21) into the cylinder (11). Item 3. The syringe according to Item 2. 5. The plunger (41; 41) and the needle holder (21;
21. Syringe according to any one of the preceding claims, characterized in that 21) can be connected by snap-in connections (43, 43 ', 37; 43, 43', 37). 6. The needle holder (21; 21) is provided with the front hole (12; 12).
Syringe according to any one of the preceding claims, characterized in that in the region it is fixed or fixable to the cylinder (11; 11) by means of a groove projection arrangement (13, 34; 13, 34). . 7. The cylinder (1) in the region of the front hole (12; 12).
1; 11), the needle holder (21; 21) fixed to the cylinder (11;
By means of rotating the needle holder (21; 21) with respect to 11) it can be opened for being drawn into the cylinder (11; 11) and the groove projection arrangement (13, 34). Syringe; 13, 34) is configured. 8. The plunger (41; 41) and the needle holder (21; 21)
) With respect to the cylinder (11; 11), the needle holder (21;
21) by rotating said plunger (41; 41) connected to
Syringe according to claim 7, characterized in that it is adapted to exert a rotation of the needle holder (21; 21) on the cylinder (11; 11). 9. Syringe according to any one of the preceding claims, characterized by at least one feature mentioned in the description or / and the drawings.