JPH10179737A - Injector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an injector capable of easily and surely detaching an injection needle without applying strong force to an injection needle detachment member, preventing blood from being stuck to the injection needle detachment member and preventing the injection needle detachment member from obstructing the removal of a protective cap strongly mounted to the injection needle. SOLUTION: In this injector 1, at the injection needle detachment member 2 for detaching the used injection needle 9 mounted to an injection needle receiving port 8 at the tip 10a of a cylindrical main body 10, a connection part 5 for integrally connecting the injection needle detachment member 2 with the cylindrical main body 10, a pressing part 3 for pressing a finger and an opening part 4 corresponding to the shape of the injection needle receiving port 8 are formed. Then, a cut 5a is formed at the connection part 5 and only the pressing part 3 is projected in the outer peripheral direction of the cylindrical main body 10 and formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of medical syringes, and more specifically, a syringe needle can be easily removed from a used syringe used for a patient without directly touching the syringe. Related to a syringe.

[0002]

2. Description of the Related Art In hospitals and the like, doctors, nurses, nurses, etc. (hereinafter, referred to as "doctors, etc.") inject medical drugs into patients when treating them. Performing treatments, such as infusions. In addition, or blood was collected from a patient for the purpose of inspection, or, adopted for blood donation
Or blood . However, when a doctor or the like removes a syringe needle from a syringe used for a patient, the doctor or the like may accidentally stab the finger or hand of the patient himself or may be scratched or scratched by the syringe needle. . In this case, if the patient has an infectious disease, there is a danger that a doctor or the like will be infected with these infectious diseases in an accident caused by the used injection needle. Especially,
In recent years, for infectious diseases that are particularly dangerous, such as HIV (acquired immunodeficiency syndrome) disease, it has been required to pay close attention to these blood-mediated infections.

[0003] Therefore, these used syringes and needles are used as infectious industrial waste by specialized companies.
Strict disposal is required. For this reason, a doctor or the like removes a needle from a syringe after injecting a pharmaceutical agent into a patient, and once used, the used needle or syringe is once stored in a predetermined container for disposal of a needle or the like, and then disposed of. Has been treated. For example, Japanese Utility Model Laid-Open No. 1-120852 and Japanese Utility Model Laid-Open No.
No. 71548, a syringe in which a needle detaching member for detaching an injection needle is disposed at the tip side of a cylindrical main body of the syringe,
A needle removal device provided separately from the syringe has already been provided.

[0004]

First, Japanese Utility Model Laid-Open No. 1-12
In the syringe disclosed in No. 0852, as shown in FIG. 13, the injection needle detaching member 102 is loosely fitted in the injection needle receiving port 103. However, generally, the syringe 10
1 is attached to the injection needle receiving port 103 together with the injection needle 104 and the protective cap 105 for protecting the injection needle 104,
Only the protective cap 105 is removed and used for blood collection or the like. The mounting state of the injection needle 104 with respect to the injection needle receiving port 103 is strongly attached so that it cannot be easily removed from the safety of use. On the other hand, the protective cap 105 is often attached to a certain extent to protect the injection needle 104. In the field of medical treatment, not only the normal injection needle 104 but also the needle needle port 103 has a long needle such as a lumbar anesthesia needle (Lumbard needle), a metal fertilization needle, or a winged needle with a tube. Some are strongly attached so that they do not come off easily. Therefore, in the conventional syringe 101 shown in FIG. 13, although the injection needle detaching member 102 is provided, since the fulcrum of the force for pressing the base of the injection needle 104 is not clearly determined, the fulcrum must be In practice, it has to be attached with the finger of the other hand, and in practice, it has been difficult to easily remove the strongly attached injection needle 104 or the like.

[0005] In addition, the conventional syringe shown in FIG. 13 has a problem that when the protective cap 105 is removed from the injection needle 104, it interferes with the injection needle detaching member 102. That is, when the protective cap 105 is firmly attached to the injection needle 104, as shown in FIG. 15, the protective cap 105 is grasped with one hand H1, and the cylindrical body 106 of the syringe 101 is grasped with the other hand H2. It is necessary to attach the thumb of the other hand H2 to the base 104a of the injection needle 104. However, in the conventional syringe 101, since the entire area in the outer circumferential direction of the injection needle detaching member 102 protrudes in the outer circumferential direction of the cylindrical main body 106 (shown by a dotted line in FIG.
4 cannot be attached to the base 104a, and if the protection cap 105 is strongly removed with the one hand H1, the injection needle 104 will be detached together with the protection cap 105 as a result. Was.

[0006] Next, the syringe disclosed in Japanese Utility Model Laid-Open No. 2-71548 is shown in FIG.
The second tip 112a is brought into contact with the base 114a of the injection needle 114, and the injection needle detaching member 112 is slid along the outside of the cylindrical main body 116 of the syringe 111. However, in the conventional syringe 111 shown in FIG.
Since one of the bases 114a of the injection needle 114 is pressed, the above-described injection needle 114 is
In some cases, it is not possible to easily remove the touch panel even if the user presses this one place. In particular, there is a risk that the finger must be considerably strained when attempting to remove the injection needle 114 with a weak force of a woman.

On the other hand, in the case of an injection needle detaching device provided separately from the above-mentioned syringe, if blood is adhered to the injection needle detaching member and used repeatedly by mistake, it adheres to the body of a doctor or the like. There was a fear. Therefore, the present invention provides a syringe that can easily and reliably remove various injection needles and protective caps without applying a strong force, and that does not hinder the injection needle detaching member when using the syringe. Aim.

[0008]

In order to solve the above-mentioned problems, the syringe of the present invention comprises a needle detaching member for detaching a used injection needle attached to a needle receiving port at the tip of a cylindrical main body. In the syringe thus prepared, the injection needle detaching member corresponds to the shape of the injection needle receiving port, the connecting portion for integrally connecting the injection needle detaching member to the cylindrical body, the pressing portion for pressing a finger, and the injection needle receiving port. An opening is formed. According to the present invention, when a doctor or the like presses the pressing portion of the injection needle detaching member with the thumb or the like of the hand, the peripheral edge of the opening presses the base of the injection needle. Because it works as a fulcrum, a used injection needle can be removed without applying strong force.
Further, since the opening is an opening corresponding to the shape of the injection needle receiving port, the periphery of this opening surely presses the entire base of the injection needle.

Further, in the syringe of the present invention, the connecting portion is formed at one end of the injection needle detaching member, and the pressing portion is formed at the other end of the injection needle detaching member. Is formed with a notch. According to the present invention, when a doctor or the like presses the pressing portion of the injection needle detachment member, the injection needle detachment member becomes easy to move due to the presence of the cut, and a sufficient force to press against the base of the injection needle is provided. Granted. Further, the syringe of the present invention is provided with a finger collar protruding in a predetermined direction behind the cylindrical main body, and the pressing portion is formed so as to protrude in a direction in which the finger collar projects. It is characterized by.

According to the present invention, since the pressing portion is formed so as to protrude in a direction corresponding to the protruding direction of the finger collar, the use of the syringe may be such that the injection needle detaching member becomes an obstacle when the syringe is used. There is no. In addition, for example, when various types of injection needles, protective caps, and the like are strongly attached, even when both hands must be used, the injection needle detaching member does not interfere.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. (First Embodiment) As shown in FIGS. 1 and 2, a syringe according to the present embodiment comprises a cylindrical main body 10 and a cylindrical main body 1.
And the injection needle 9 attached to the tip 10a of the
The main structure is that an injection needle detaching member 2 for removing the needle is provided.

The syringe 1 described here has a capacity of 2.5 cc,
5 cc and 10 cc are the most frequently used syringes 1 at medical sites, and are plastic disposables. In such a syringe 1, a scale for measuring the amount of blood or the amount of a pharmaceutical agent is provided at a predetermined position of the cylindrical main body 10, a plunger 6 is disposed inside the cylindrical main body 10, and the cylindrical main body 1
A finger collar 10b is provided behind 0. In addition,
The invention is applicable to larger syringes and to smaller syringes 1. An injection needle receiving port 8 for mounting an injection needle 9 is formed at a distal end 10a of a cylindrical main body 10 of the syringe 1 so as to protrude therefrom. The base 9a of the injection needle 9 is mounted on the injection needle receiving port 8. It has been done. The injection needle detaching member 2 is disposed near the injection needle receiving port 8 of the cylindrical main body 10.

That is, the injection needle detaching member 2 presses the base 9a of the injection needle 9 to remove the injection needle 9, and has a substantially "C" -shaped cross section, and is connected to one end. The part 5 has the pressing part 3 formed on the other end side, and the opening part 4 is formed substantially at the center. The connecting portion 5 and the opening 4 are formed to be slightly thicker. The injection needle detaching member 2 is made of the same plastic as the cylindrical main body 10 of the syringe 1, and can be manufactured integrally with the cylindrical main body 10. Although not specifically shown, the injection needle detaching member 2 is extended integrally in the direction of the distal end 10a of the cylindrical main body 10, and is used by being bent from a cut 5a of a connecting portion 5 described later. Then, the manufacturing process is easy.

The connecting portion 5 of the injection needle detaching member 2 is a portion serving as a fulcrum when the pressing portion 3 is pressed to remove the injection needle 9, and is a portion serving as a fulcrum based on the so-called leverage principle. Therefore, when the connecting portion 5 is used as a fulcrum, a strong force is not required to be applied. Further, the connecting portion 5 is formed to be thick in order to exhibit elasticity as a fulcrum. The connecting portion 5 is provided near the injection needle receiving port 8. This is because it has been considered that if the connecting portion 5 arbitrarily protrudes in the outer circumferential direction of the tubular main body 10, it becomes an obstacle in removing the injection needle 9 with fingers. The connecting portion 5 needs to be integrally connected to the distal end 10a side of the tubular main body 10. In the present embodiment, a notch 5a is further formed near the connecting portion 5. This is a portion where the connecting portion 5 is a fulcrum of the so-called lever principle, and therefore this portion is formed to be thick. However, by forming the cut 5a near this portion, the injection needle detaching member 2 is formed. Is to be easily movable. This eliminates the need to apply the strong force. The pressing portion 3 is provided with a base 9 a of the injection needle 9.
This is a portion that applies a pressing force that presses the button, and is small enough to be hit by a thumb, an index finger, or the like. A jagged surface 3a is provided on one surface of the pressing portion 3 to which the finger contacts, to prevent the finger from slipping.

The pressing portion 3 is formed so as to protrude so as to correspond to a part of a protruding direction of a finger collar 10b provided behind the cylindrical main body 10. That is,
The syringe 1 is provided so that when the injection needle 9 is pierced into a patient's skin or blood vessel, the finger collar 10b projects laterally so as to be substantially parallel to the patient's skin or the like. In this case, the syringe 1 is used so that the graduated portion thereof faces upward, and the finger collar 10b is used in a horizontal direction. As described above, the ordinary syringe 1 is provided with two protruding symmetrical portions where the finger collar 10b protrudes.

Therefore, the pressing portion 3 is formed corresponding to one of the protruding portions. Therefore,
Even when the injection needle 9 is pierced into the skin or the like of the patient, the pressing portion 3 is particularly configured so that the pressing portion 3 does not interfere. In the present embodiment, the shape of the pressing portion 3 is formed as an upright shape on the outer periphery of the tubular main body 10. However, as shown in FIG. 4, it may be provided so as to slide on the outer periphery of the cylindrical main body 10. The opening 4 is for securely pressing the base 9 a of the injection needle 9, and is provided with the circular injection needle receiving port 8.
Is formed so as to be able to penetrate through. Specifically, an elliptical opening corresponding to the shape of the injection needle receiving port 8 is formed substantially at the center of the injection needle detaching member 2, and the size of the opening 4 is larger than the diameter of the injection needle receiving port 8. It is formed as a slightly larger diameter. Therefore, the peripheral edge 4 a of the opening 4 is configured to press the base 9 a of the injection needle 9. The shape of the opening 4 may be a circular shape, a square shape, or the like, but the elliptical shape is easier to manufacture and penetrates the injection needle port 8 easily.

Here, as the overall shape of the injection needle detaching member 2, if it can press the base 9a of the injection needle 9, in addition to the above-described substantially "8" shape, FIG.
(B) As shown in (c), even if it is circular,
It may be a square shape. In addition, as for the thickness of the injection needle detaching member 2, the opening 4 is formed to be slightly thicker, but the play when the injection needle 9 is attached to the front and rear length of the injection needle receiving port 8 is mounted. Length (remaining part)
Preferably, the length is slightly shorter than the length. With such a thickness, depending on the type of the syringe 1, depending on the type of the syringe 1, the injection needle 9 is strongly inserted into the injection needle receiving port 8 at the distal end 10 a of the cylindrical main body 10 so that the injection needle 9 cannot be easily removed. Although the needle 9 may be attached (see FIG. 8), the injection needle 9 can be easily removed in this case as well.

The injection needle socket 8 of the syringe 1 is
Depending on the size of the syringe 1, the provided position may be different. For example, as shown in FIG.
c and 2.5 cc syringe 1 and 5.0 cc and 10.0 c
As shown in FIGS. 6 (a) and 6 (b),
Although provided at the center of the distal end 10a of the cylindrical main body 10, the 20.0 cc and 30.0 cc syringes 1
As shown in (c), the cylindrical body 10 is provided slightly near the outer peripheral side from the center of the tip 10a. Therefore,
The injection needle detaching member 2 having the above-described configuration is used for these various types of syringes 1.
Are respectively arranged corresponding to the positions where the injection needle receiving ports 8 are formed.

Next, a description will be given of a preferred modified example applied to a small syringe 1 of 1.0 cc or 2.5 cc. In this case, the function as a fulcrum of the lever principle of the connecting portion 5 is described. As shown in FIG. 7, it is preferable that the connecting portion 5 is protruded in the outer peripheral direction of the cylindrical main body 10 and that a distance M is provided to some extent. In this case, the projecting direction of the connecting portion 5 is also changed to the finger collar 10.
This is the same direction as the projecting direction of b.

Next, a case where the injection needle 9 of the syringe 1 is actually removed using the present embodiment will be described. That is, when removing the injection needle 9 of the syringe 1, as shown in FIG. 3, the doctor or the like presses the pressing portion 3 of the injection needle detaching member 2 with the thumb or the like of the hand holding the syringe 1. 9
(In the direction of arrow F1), the connecting portion 5 serves as a fulcrum of the principle of leverage and strongly pushes the vicinity of the opening 4 in the direction of the injection needle 9 (in the direction of arrow F2).

Here, depending on the type of the syringe 1, the mounting state of the injection needle 9 with respect to the cylindrical main body 10 depends on the safety of its use.
It is often mounted so that it cannot be easily detached. However, since the connecting portion 5 functions as a fulcrum of the force for removing the injection needle 9 as described above, the used injection needle 9 can be removed without applying a strong force. Also,
Since the opening 4 is an opening corresponding to the injection needle receiving port 8, the peripheral edge 4 a of the opening 4 surely presses the base 9 a of the injection needle 9. Further, in the present embodiment, since the cut 5a is formed in the vicinity of the connecting portion 5, the injection needle detaching member 2 becomes easy to move,
A sufficient pressing force is applied to the base 9a of the injection needle 9. Therefore, the injection needle 9 can be removed gently, and it is possible to prevent a situation in which blood remaining on the base 9a of the injection needle 9 or the distal end 10a of the syringe 1 is scattered.

By the way, as shown in FIG. 2, after the syringe 1 is attached to the injection needle receiving port 8 together with the protective cap 7 for protecting the injection needle 9, only the protective cap 7 is removed as shown in FIG. use. In some cases, the mounting state of the protective cap 7 is strongly covered by the injection needle 9. There are various types of injection needles 9 and the like, some of which are strongly attached to the injection needle receptacle 8. That is, at the medical site, as shown in FIG. 8, a lumbar anesthesia needle (Lumbard needle; FIG. 8A) and a Teflon needle (Surflo, Elaster, FIG. 8 (b)), metal fertilization needle (FIG. 8 (c)), extension tube (FIG. 8 (d)), tracheal tube for general inhalation anesthesia (FIG. 8).
(E)), a feeding tube for neonates (FIG. 8 (f)), a winged needle with a tube (FIG. 8 (g)), an experimental millipore filter used for in vitro fertilization (IVF), etc. (FIG. 8)
(H)) A so-called three-way stopcock (FIG. 8 (i)) is mounted and used, but some of them are strongly mounted so as not to come off easily.

In such a case, as shown in FIG. 2, if the syringe 1 has the protective cap 7 as shown in FIG. 2, the doctor presses the cylindrical body 10 of the syringe with one hand and injects the injection with the thumb of the hand. In some cases, it is necessary to use both hands, for example, it is necessary to remove the protective cap 7 and the like by pulling the protective cap 7 in the direction of the arrow with the other hand while holding down the base 9a of the needle 9. However, in the syringe 1 of the present embodiment, the connecting portion 5 of the injection needle detaching member 2 is provided near the injection needle receiving port 8 and only the pressing portion 3 is the cylindrical main body 10.
Are formed so as to protrude in the outer peripheral direction. Moreover, the protruding direction of the pressing portion 3 is balanced with the protruding direction of the finger collar 10b behind the cylindrical body 10.

Therefore, depending on the type of the above-mentioned various types of syringes 1, the protective cap 7 may be firmly attached to the injection needle receiving port 8, or the protective cap 7 may be strongly attached to the injection needle 9. Even when removing, the injection needle detaching member 2 does not hinder the operation of both hands. Further, by setting the projecting direction of the pressing portion 3 to be the same as the projecting direction of the finger collar 10b, there is an advantage that the size is almost the same as that of the conventional syringe and the package is not bulky at the time of packing. Further, when the injection needle 9 is pierced into the skin of a patient in the injection of a drug, blood collection, or the like by the above-described syringe 1, the scale of the syringe 1 is made visible as shown in FIGS. In this case, the protrusion of the finger collar 10b is positioned so as to be parallel to the patient's skin or the like. However, the pressing portion 3 of the present embodiment is formed so as to protrude so as to correspond to a part of the protruding direction of the finger collar 10b. Therefore, when the finger is operated in the direction of the arrow in the drawing, the pressing portion 3 does not interfere with the operation of one hand or both hands. In addition, there is an advantage that the scale can be easily viewed and used.

Further, during a medical procedure, the injection needle 9 attached to the syringe 1 may be replaced in a short time. For example, in order to quickly aspirate a large amount of 10 cc or 20 cc of medicine into the syringe 1, a large-diameter injection needle (“suction needle”) is used.
And so on. ), And then, when injecting the drug into a patient, it is necessary to reduce the pain as much as possible. In such a case, the operation of detaching the large-diameter suction needle has an advantage that remarkably cleanliness can be maintained by using the injection needle detachment member 2 of the present embodiment rather than by using a finger.

(Second Embodiment) In the syringe of the present embodiment, a pressing force by a human finger is applied from the opposite direction to that of the first embodiment. That is, in the present embodiment, as shown in FIG. 11, an opening 14 corresponding to the shape of the injection needle receiving port 8 is formed at one end of the injection needle detaching member 12, and a finger of the hand is pressed against the other end. The syringe 11 has a pressing portion 13 formed therein, and a connecting portion 15 formed integrally and substantially integrally with the cylindrical main body 10.

As described above, the injection needle detaching member 12 of the injection needle 11 of the present embodiment is configured such that the cross section has a horizontal "T" shape and the connecting portion 15 is located substantially at the center. . In the present embodiment, it is preferable that the thickness in the vicinity of the opening 14 is increased.
The pressing section 13 is preferably small. Here, the notch 5a is not formed in the connecting portion 15 unlike the case of the first embodiment. The jagged portions 3a provided so that the fingers do not slip are formed on the opposite side of the case of the first embodiment. The first in the figure
Members having the same configuration as those of the embodiment are denoted by the same reference numerals, and description thereof will be omitted. When removing the used injection needle 9 using this embodiment, as shown in FIG. 12, the pressing portion 13 of the injection needle detaching member 12 is moved in the direction of the cylindrical main body 10 with the thumb of the hand or the like. When pressed in (arrow direction F3), the connecting portion 15 becomes a fulcrum of the principle of leverage.
The vicinity of the opening 14 is strongly pushed out in the direction of the injection needle 9 (arrow direction F4). Therefore, similarly to the first embodiment, the injection needle 9 can be easily and reliably removed without applying a strong force. As described above, the embodiment of the present invention has been described in terms of the 2.5 cc, 5 cc, and 10 cc syringes 1 which are most frequently used in medical practice. However, the present invention can be applied to syringes other than these sizes. Needless to say.

[0028]

According to the syringe of the present invention, the injection needle detaching member includes
Since the connecting portion integrally connected to the cylindrical body, the pressing portion for pressing the finger, and the opening corresponding to the shape of the injection needle receiving port are formed, when the pressing portion is pressed, the connecting portion is leveraged. Since the base of the injection needle is pushed as a fulcrum of the principle of the above, the used needle can be easily and reliably removed without applying a strong force. Further, in the syringe of the present invention, since the cut is formed in the vicinity of the connecting portion, the injection needle detaching member is easily movable, and a sufficient force for pressing the base of the injection needle is applied.

Further, the syringe of the present invention is provided with a finger collar protruding in a predetermined direction behind the cylindrical main body, and the pressing portion is formed so as to protrude corresponding to the projection direction of the finger collar. For some types of injection needles, such as lumbar anesthesia needles (Lumbard needles), metal fertilization needles, winged needles with tubes, etc., the needles are strongly attached to the needle receptacles. Even when both hands are used because the injection needle is strongly attached to the protective cap, the injection needle detaching member does not interfere. Therefore, no matter what kind of injection needle, there is no trouble in a series of attaching and detaching operations.

[Brief description of the drawings]

FIG. 1 is a perspective view of a syringe according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view showing a distal end side of the syringe according to the embodiment.

FIG. 3 is a side view for explaining a state in which the injection needle in the one embodiment is detached.

FIG. 4 is a front view showing a modified example of the injection needle detaching member of the one embodiment.

FIG. 5 is a front view showing another modified example of the injection needle detaching member.

FIG. 6 is a front view for explaining an arrangement state of an injection needle detaching member due to a difference in capacity of the syringe, and an arrangement state of these various injection needle detachment members.

FIG. 7 is a side view showing a modified example of the syringe of the embodiment.

FIG. 8 is a perspective view illustrating types of a needle, a tube, a filter, and a stopper attached to the syringe.

FIG. 9 is a diagram illustrating a state in which a medicine is injected by the syringe according to the embodiment.

FIG. 10 is a diagram illustrating a state in which blood is collected by the syringe according to the one embodiment.

FIG. 11 is a side view of a syringe according to another embodiment of the present invention.

FIG. 12 is a side view illustrating a state in which the injection needle in the other embodiment is detached.

FIG. 13 is a sectional view of a conventional syringe.

FIG. 14 is a side view of a conventional syringe.

FIG. 15 is a perspective view for explaining a procedure of removing the protective cap when the protective cap is attached to the injection needle in the conventional syringe.

[Explanation of symbols]

 1, 11 ... syringe 2, 12 ... injection needle detaching member 3, 13 ... pressing part 4, 14 ... opening part 5, 15 ... connecting part 5a ... cutting part of connecting part 7: Protective cap 8: Injection needle receptacle 9: Injection needle 9a: Base of injection needle 10: Cylindrical main body of syringe 10b: Finger collar of syringe

Claims (3)

[Claims] 1. A syringe provided with an injection needle releasing member for releasing an injection needle attached to an injection needle receiving port at a distal end of a cylindrical main body, wherein the injection needle releasing member is connected to the cylindrical needle body. A syringe, comprising: a connecting portion integrally connected to a main body; a pressing portion for pressing a finger of a hand; and an opening corresponding to the shape of the injection needle receiving port. 2. The method according to claim 1, wherein the connecting portion is formed at one end of the injection needle detaching member, the pressing portion is formed at the other end of the injection needle detaching member, and a cut is formed near the connecting portion. The syringe according to claim 1, wherein the syringe is provided. 3. A finger collar which projects in a predetermined direction behind the cylindrical main body is provided, and the pressing portion is formed so as to project in accordance with a projection direction of the finger collar. 3. A syringe according to claim 1 or claim 2.