JPH06219483A - Protective cap for hypodermic needle - Google Patents

Abstract

PURPOSE:To prevent a hypodermic needle from erroneously sticking a finger or another body part by making a protective cap stand by itself stably on a desk instead of holding it with fingers when the cap is put on the needle after an injection. CONSTITUTION:A protective cap body 101 has an opening 103 which a hypodemeric needle passes through at an end, while the other end 105 can be fitted into an engaging member 109 of a self-standing means 107. The end 105 is designed to be press-fitted into the engaging member 109 formed as a recess, wherein pushing the end 105 toward a direction of an arrow into the self-standing member 107 achieves the engagement. When the end 105 is pushed in, a vent hole is preferably provided to allow air in the self-standing member 107 to escape. In addition an engaging means to be engaged with a protrusion on an outer face of a foot of the needle is provided inside a slightly lower part of the opening 103. A bottom area of the protective cap is larger than a cross-sectional area of the body, so that it can stably stand by itself.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a protective cap for an injection needle. The present invention can be applied to various injection needles and the like. Therefore, not only the so-called general needle but also a butterfly needle (winged needle), a single needle such as an insulin needle, a vacuum blood collection tube needle, a dental needle, a multiple needle such as a catheter needle, etc. include.

[0002]

2. Description of the Related Art In recent years, a doctor, a nurse, or people engaged in health care at a clinic (healthcare worker) mistakenly use a used needle after injection during medical treatment or medical treatment. Pierce your finger, which
Infection with diseases such as hepatitis B and AIDS mediated by blood and body fluids has become a serious problem.

In the United States, in 1983, CDC (Ce
nter for Desease Contorl), medical practitioners said, “Prevention guidelines for blood and fluids (Universal Precautions).
to Blood and Body Fluid) ”. In 1987, the CDC stated that the CDC should comply with "Guidelines for prevention of blood and body fluids" when all patients are treated regardless of their illness state. Recommends to workers.

Then, until December 1991, the US government's OSHA (Occupational Safety and Health Adm)
(Inistration), the policy regarding the prevention of CDC above
It became clear that it will become a standard with enforceability. This is June 6, 1992 as a regulation (OSHA Regulations).
It is effective from the day.

In order to prevent injuries due to piercing of the wrong fingertip of an injection needle or other body parts after injection in the rules concerning "prevention guidelines for blood and body fluids", (1) The needle of a disposable syringe should not be covered with a protective cap by hand; (2) The needle should not be directly removed from the used syringe; and (3) Injection after use It is specified that the needle must not be bent or broken by hand.

[0006]

The background of such a rule is that piercing a fingertip or other part of the body with an injection needle after injection means that the protective cap is held by hand and the injection needle after injection is injected. It is thought that this is particularly likely to occur when the protective cap is covered on the. That is, there is a problem in that the injection needle cannot be covered with the protective cap unless the protective cap is held by hand after the injection.

When a conventional protective cap is put on an injection needle after injection, a right-handed person usually holds the vicinity of the center of the syringe with his right hand, and puts the protective cap between his left index finger and his thumb. Then, the injection needle set at the tip of the syringe is inserted into the opening portion of the protective cap.

A conventional protective cap 10 is provided on the upper portion of FIG.
1 is illustrated. Usually, the inner diameter (D ₁ ) of the opening of the protective cap is about 6 mm, and from the hub of the injection needle (corresponding to the tip of the syringe) to the tip of the needle (the length of the injection needle inserted into the protection cap. Is approximately 40)
It is about 60 mm. Syringe with an effective volume of 5 ml (length about 9
When the syringe body is held, the distance from the hand to the needle tip is about 100 mm. At this time, it is necessary to hold the syringe with the dominant hand and insert the needle tip about 100 mm away from the hand into the opening 103 of the protective cap having an inner diameter of only about 6 mm.

At the time of this insertion, the right hand, which is the dominant hand holding the syringe body, and the left hand, which is not the dominant hand holding the protective cap, also shake each other, so it is not possible to insert the tip of the needle into the small opening of the protective cap. It becomes even more difficult, and it is easy for false piercing of the thumb or forefinger holding the protective cap.

[0010]

Means for Solving the Problems If the inventor can make a protective cap self-supporting in a stable state on a desk without holding it with a fingertip when covering the injection needle after injection, Based on the idea that inserting the injection needle into the protective cap will prevent accidentally piercing the fingertip or other body parts with the injection needle,
The present invention has been completed.

That is, when the protective cap is put on the injection needle after injection, the protective cap is held by the fingertips if the protective cap is vertically stable and self-standing with the opening facing upwards. There is no need, and even if the tip of the needle fails to be inserted into the opening of the retaining cap, there is no accidental puncture of the fingertip. Also,
Inserting a needle into the protective cap is much easier because the protective cap is stable and self-supporting and stationary on the tabletop.

Conventionally used protective caps for injection needles have a length of about 40 to 50 mm, an outer diameter of an opening through which the needle passes is about 9 mm, and an end opposite to the opening. The outer diameter of the surface perpendicular to the axial direction of the protective cap (hereinafter also referred to as the bottom surface) is about 6 mm, and the diameter of the cross section is 9 mm to 6 mm in a taper or step shape as a whole.
It is very small (see "Fig. 1").

Therefore, it is practically impossible to make such a protective cap stable and self-standing with its bottom surface (the end surface opposite to the opening) facing down. Therefore, by supplying a self-supporting member to such a protection cap, it becomes possible for the protection cap to stably stand on its own.

Therefore, according to the present invention, the protective cap main body for the injection needle having the cylindrical space portion for accommodating the injection needle therein and the one end portion where the opening for inserting the injection needle into the space portion is located. There is provided a protective cap for an injection needle, which is located at the other end on the opposite side to and has a self-supporting member for self-supporting the protective cap body.

In the protective cap of the present invention, the protective cap body has a cylindrical space for accommodating the injection needle therein and an opening through which the injection needle passes, and the other end of the protection cap body. A self-supporting member for stably stabilizing the protection cap is engaged with the portion. That is, the protective cap body may be substantially the same as a conventionally used protective cap for an injection needle. However, it is necessary that the protective cap body and the self-supporting member can be brought into an engaged state.

In the protective cap of the present invention, the self-supporting member has a cross-sectional area (hereinafter, also referred to as a bottom portion) of an end portion (hereinafter, also referred to as a bottom portion) on a side perpendicular to the axial direction of the protective cap body, the side being opposite to the opening portion of the protective cap. (Also called the bottom area) is a means to substantially expand. In the present specification, "substantially expand" means not only when the bottom area actually increases, but also when the cross-sectional length of the axial cross section at the bottom (when the cross section is circular, the diameter) is large. It also includes a mode in which the same effect as when the bottom area becomes large is obtained.

In a specific embodiment, the self-supporting member is a member independent of the protective cap body, and the end of the conventional protective needle cap of the protective cap opposite to the opening through which the needle passes. An engaging member that can be permanently or temporarily engaged with the part, and a (annular) flange-like member that extends at an angle perpendicular or nearly perpendicular to the axial direction of the protective cap at the opposite end of the engaging member. Have. Due to the flange-shaped member, the bottom surface of the protective cap becomes circular as a whole. The flange-like portion does not necessarily have to be annular, and may have, for example, an aspect in which the bottom surface has an overall polygonal shape, or a plurality of thin strips extend radially in a radial direction so that the bottom surface has an overall circular shape or It may have a polygonal shape.

In particular, the flange portion is substantially polygonal,
For example, in the case of a triangle, a quadrangle, a hexagon, or an octagon, even if the self-supporting protective cap falls down, there is a new advantage that it does not roll on the table but stands still on the spot. In this case, even if the protective cap is overturned, if the injection needle is oriented almost horizontally, insert the needle tip into the opening of the protective cap, and then use your fingers to completely remove the protective cap from the root of the injection needle. The parts can be engaged. This is especially true when injecting an infant, even if the protective cap falls over on a table due to rampage of the infant, it will remain stationary in that state, and the protective cap will be safely covered on the injection needle as described above. Therefore, it can be said that this is a preferable feature in the field where the syringe is actually used.

With this flange-shaped member, the cross-sectional area of the protective cap perpendicular to the axial direction increases at the end portion on the side opposite to the opening portion, and it becomes possible to make the protective cap stand on a table or the like in a stable state. . The larger the outer diameter of the flange portion, the more stable the protective cap can stand on its own. However, if it is too large, it may be inconvenient in actual handling (for example, it occupies a large space during storage), and therefore the outer diameter of the bottom surface is actually about 2 to 3 times the outer diameter of the protective cap body. There is no practical problem with the degree. Alternatively, the bottom area is approximately 4 times the cross-sectional area of the protective cap.
If it is set to about 9 times, there is no problem in the self-sustaining stability of the protective cap.

When a conventional commercially available protective cap is used as the protective cap main body of the present invention, a self-standing structure having a concave portion that can be fitted to the end portion of the conventional protective cap having no opening, for example, by press fitting. The means may be engaged. When not adopting the mode of engaging with the protective cap of the injection needle which is commercially available in the related art, the engaging means may have any suitable mode. For example, the self-supporting member may be attached to the protective cap body with an adhesive. Of course, as in the case of using a conventional commercially available protective cap, the end shapes may be press fit or snap fit with each other. In yet another aspect, the engagement may be performed by screwing or crimping. Furthermore, in another aspect, the protective cap body and the self-supporting member may be joined by ultrasonic welding. Which mode is selected is determined in consideration of the material used and the cost.

In the above-mentioned embodiment, the protective cap body and the self-supporting member are separate members, but they can be manufactured integrally from the beginning. For example, a cylindrical member whose bottom surface is slightly recessed from one end and whose other end is open (hence, a tubular shape whose bottom surface is located slightly downward from one end in the direction of the opening (or end part). Bamboo tubular member) with a knot in the vicinity is molded, and then
The flange-shaped portion can be formed by pushing the wall surface of the protective cap from the bottom portion to the one end outwardly.

In another specific embodiment, the self-supporting member is replaced with the above-mentioned flange-shaped portion and extends at least 3 along the axial direction of the protective cap main body and perpendicular to the axis.
One rib-like member, which is located at least near the periphery of the end of the protective cap body opposite to the opening, or extends outward slightly beyond the end. In this case, the bottom area of the protection cap does not actually increase, but the ribs increase the diameter across the bottom of the protection cap, and the same effect as when the bottom area is substantially increased is obtained. be able to.

In this aspect, if the self-supporting member extends along substantially the entire length of the protective cap not only at the end opposite the opening, the protective cap and the self-supporting member need not be independent. Is very convenient in that it can be integrally molded. Of course, it is also possible to glue or weld the self-supporting member and the protective cap as separate members at a later time, in which case the self-supporting member does not have to extend the full length of the protective cap, but at least opposite the opening. It only has to exist near the end on the side.

In another aspect of the self-supporting member of the protective cap of the present invention, the self-supporting member is a suction cup member,
It has the function of a suction cup, that is, the function of temporarily adhering to a smooth surface. In this aspect, when the diameter of the suction cup is large, the self-supporting member is not different from the aspect having the flange-shaped member in appearance, but since the effect of the suction cup is added in addition to the large bottom area, the self-supporting of the protective cap is increased. Stability is greatly improved. In the present specification, the function of the suction cup means a so-called suction cup, which means that one side is dented and the pressure can be temporarily attached to the side by a low pressure. If it functions as a suction cup, the diameter of the suction cup-shaped member is
The difference is that it is not always necessary to increase the cross-sectional area of the protective cap body perpendicular to the axial direction.

Of course, in consideration of the stable self-supporting property of the protective cap, it is preferable that the suction cup has a large diameter. Also in this case, as in the case of the flange-shaped member, a suction cup having a diameter of about 1.5 to 2.5 times the outer diameter of the protective cap is used as the self-supporting member. It is also possible to use a removable pressure-sensitive adhesive or pressure-sensitive adhesive instead of the suction cup to temporarily attach it to a desk or the like.

In the protective cap of the present invention, the protective cap main body is similar to the conventional protective caps for commercially available injection needles, and the projection of the base portion of the injection needle for facilitating attachment / detachment of the injection needle to / from the syringe. There may be engagement means on the inner surface near the opening and a friction means on the outer surface to prevent slippage between the fingertip portion exerting force and the protective cap body.

In a particularly preferred embodiment of the invention, the protective cap body has "guide" means around the opening.
The guide means is for facilitating the insertion of the injection needle into the protective cap, and has a truncated cone shape whose cross-sectional diameter decreases in the direction from the opening to the bottom surface.
That is, the diameter of the opening at the end of the protective cap is larger, that is, the sectional area of the opening is larger than the sectional area of the space portion of the protective cap that accommodates the injection needle, for example, about 2 to 4 times larger. Therefore, it becomes easier to insert the injection needle into the space portion.

For example, in this "guide" means, the diameter of the opening (bottom surface of the truncated cone) is about 12 to 13 mm, and the diameter of the upper surface of the truncated cone (hence, the diameter of the protective cap body) is about the same as the conventional one. It is about 6 mm. In this case, the cross-sectional area of the opening increases about 4 times to about 113～132Mm ^2, and the cross-sectional area of a conventional protective cap (approximately 28mm ^2). Therefore, the insertion of the injection needle becomes much easier.

Any suitable material may be used for the protective cap body and the self-supporting means of the protective cap of the present invention. However, when productivity is taken into consideration, plastic materials are particularly suitable because they facilitate molding. Any plastic material can be used as long as it can be molded well. For example, it is preferable to use polyethylene, polypropylene, or the like to integrally form the protective cap, or to separately form the protective cap body and the self-supporting member. In addition, rubber (natural and synthetic rubber) can be used as well as plastic materials.

In addition, when the self-supporting means is heavy, the position of the center of gravity of the protective cap as a whole is lowered and the self-supporting stability is increased. It is also preferable to use relatively heavy materials for the means. For example, a relatively low density material such as polypropylene or polypropylene is used for the protective cap body, and a relatively high density material such as polyacetal resin or rubber is used for the self-supporting means. Further, it is also preferable to mold a metal and use it as a self-supporting means, for example, aluminum, brass, stainless steel, iron or the like may be used. Further, when the self-supporting means is a sucker, it is preferable to use a material having relatively flexibility or elasticity, for example, silicone rubber, thermoplastic elastomer (for example, polystyrene-based, polyolefin-based or polyester-based elastomer) and the like. To use. Further, a material having flexibility or elasticity is preferable because it has good compatibility with a desk or the like with which it comes into contact and can absorb a little unevenness of the desk.

Next, the protective cap of the present invention will be described in more detail with reference to the accompanying drawings. One specific embodiment of the protective cap of the present invention is shown in "Fig. 1" in a schematic perspective view.
The illustrated protective cap body 101 may be similar to conventional protective caps for syringes that are commercially available. The protective cap body 101 has an opening 103 at one end through which the needle of the syringe passes, and the other end 105 can be fitted into the engaging member 109 of the self-supporting means 107. In the illustrated embodiment, the end 105 is press-fittable into the engagement member 109 formed as a recess, which is satisfied by pushing the end 105 into the self-supporting member in the direction of the arrow. Power engagement is achieved. It is preferable to provide an air vent hole 127 so that the air inside the self-supporting member 107 escapes when the end portion 105 is pushed in (see "FIG. 2").

This engaged state is schematically shown in FIG. 2 in a sectional perspective view. However, the shape of the flange-shaped member 111 of the self-supporting means 107 is square. Further, as is clear from “FIG. 2”, the protective cap body 101 is
Engaging means 117 capable of engaging with a projection on the outer surface of the root portion of the injection needle inside the slightly lower portion of the opening 103.
Have. By engaging this with the projection of the injection needle and turning it, it becomes possible to easily remove the injection needle as desired without turning the injection needle itself. The self-supporting member 107 has a flange-shaped member 111 at the end opposite to the engaging member side. As is apparent from FIGS. 1 and 2, the bottom area of the protective cap of the present invention formed by engaging the protective cap body and the self-supporting means is the same as the sectional area of the protective cap body alone. By comparison, it's obviously bigger. Therefore, the protective cap of the present invention can stably stand on its own with the flange-shaped member 111 as the bottom portion.

In the embodiment shown in FIG. 1, the protective cap body has ribs 113 on its outer surface to prevent slippage, so that the protective cap can be handled, in particular the protective cap can be rotated about its axis. Will be easier. Further, the engaging means 109 of the self-supporting means 107 may have a frustoconical inviting means 119 as a guide means in the vicinity of the opening thereof, so that fitting can be easily performed. The attraction does not necessarily have to be frustoconical in shape, as long as the cross-sectional area of the space 135 for accommodating the syringe toward the opening of the protective cap is substantially large. For example, the shape of a truncated pyramid can be used.

FIG. 3 shows the protective cap body 1 of the present invention.
A specific example of 01 is schematically shown in a plan view. In the illustrated embodiment, the protective cap body 101 has a frustoconical entrainment means 115 in the opening 103 through which the needle of the syringe passes. Therefore, the area of the opening becomes substantially larger than the cross-sectional area of the protective cap body, and the tip of the injection needle can be easily inserted into the opening 103. The end portion 105 of the protective cap body is, as described with reference to FIG.
The self-supporting means 107 is engaged in a suitable manner.

FIG. 4 schematically shows a cross-sectional view of the protective cap body shown in FIG. As is clear from this cross-sectional view, it can be understood that the area of the opening at the tip of the injection needle is increased by providing the intake 115. 5 and 6 show the self-supporting means 107 of the protective cap of the present invention in a plan view and a side sectional view, respectively. In the illustrated embodiment, the flange-shaped member 111 has a rectangular shape. As shown, the self-supporting means 107 has a flange-like portion 111 and an engaging means 109. Further, the bottom surface 119 of the self-supporting means 107 does not necessarily have to be flat. For example, as shown in the figure, if the peripheral portion is raised in an annular shape and the central portion 121 is slightly recessed, it is possible to reduce the influence of unevenness of the stand, desk, or the like that makes the protective cap self-supporting.

Also, the engaging portion of the self-supporting means, as shown in the figure, has a small unevenness (12) rather than a complete cylindrical wall.
3 and 125) has an advantage that the contact portion is appropriately reduced and the protective cap body is easily attached and detached. FIG. 7 schematically shows how to use the protective cap of the present invention. Usually, the syringe 131
The injection needle 133 is fitted (or screwed) as shown by the arrow A, and the operation of using the syringe is completed in this state. Before or immediately after the use of the syringe, the protective cap body of the present invention in which the self-supporting means 107 is engaged with the protective cap body 101 having the space 135 for accommodating the injection needle is made to stand on the table 137, and the arrow All you have to do is lower the syringe in direction B, pass the needle tip through the opening and push it in until it stops. Injection needle 1
The engagement between 33 and the protection cap body 101 can be performed in the same manner as in the conventional protection cap. For example, the engagement can be achieved by an undercut provided near the opening of the protective cap body.

FIG. 8 is a perspective view schematically showing another embodiment of the protective cap of the present invention. In the illustrated embodiment, the protective cap has six ribs 141 on the outer surface of the protective cap body along the axial direction of the protective cap from below the opening to the end 105. At the end of the protective cap, the ribs 141 project radially from the surface of the protective cap, so that the protective cap has a bottom area equal to a circle with a radius that is larger by the length of the rib, and thus cuts off the protective cap body. The area will increase substantially,
Therefore, the protective cap can stably stand on its own.

As is apparent from the figure, the ribs that can contribute to the increase of the cross-sectional area are the end portions 105 of the protective cap body 101.
The rib 141 does not necessarily have to extend from immediately below the opening to the end portion 105 because it is only the portion located at, and it is sufficient that the rib 141 exists at least in the vicinity of the opening 105. For example, the rib 141 may be formed as a separate member and may be provided on the protective cap later. In FIG. 9, a side view of the protective cap shown in FIG. 8 is schematically shown. It is similar to the embodiment shown in FIG. 8 except that the central portion of the end portion 105 is slightly recessed.
In the embodiment shown in "Fig. 9", the rib 141 only slightly protrudes from the end portion 105 of the protective cap, but it may be in a further protruded state, and the contact between the rib and the desk is line contact. However, it is preferable that only the tip portions of the ribs make point contact with the desk, and if the number of ribs is three, the stability is further increased.

"FIG. 10" is an end view of "FIG. 9".
Although there are six ribs 141 in the illustrated embodiment,
The number of ribs does not necessarily have to be six, and in consideration of the flatness of the desk on which the protective cap is placed, the number of ribs is preferably as small as possible, for example, three. FIG. 11 shows yet another aspect of the protective cap of the present invention. In the illustrated embodiment, the protective cap body 101 includes the portion 159 with the self-supporting means 1.
07 at its end 105. In the illustrated embodiment, the protective cap body 101 and the self-supporting means 107 are integrally formed. For example, as described above, such a protective cap can be obtained by forming a tubular shape in which the bottom surface is not located at the end portion and then forming by expanding the wall portion from the bottom surface to the end portion.

FIG. 12 is a schematic cross-sectional perspective view of a mode in which a suction cup is engaged with the end of the protective cap. "Figure 1
2 ”, the opening 103 has an entrainment. Further, the protective cap body 101 and the self-supporting means 107 are supplied as separate members so that they can be fitted to each other. In the illustrated mode, the protective cap main body also has an opening 153 at the end opposite to the opening 103, and the self-supporting means 107 (151) has the protrusion 157 as an engaging member.
And the annular space 155, the end portion 105 of the protective cap main body is housed in the annular space 155, and the protruding portion 157 is fitted into the opening portion of the end portion 105 by a snap fit.

In addition to such an engagement mode, a mode such as press-fitting, screwing, adhesion with an adhesive, fusion with ultrasonic waves or heating, and the like can be adopted as required. Furthermore, it goes without saying that such an engaging method can be applied not only to the mode in which the suction cup is used as the self-supporting means but also to the self-supporting means in other modes.

[0042]

When the protective cap of the present invention is used,
Since the protective cap can be preliminarily stable and self-supporting on the table, it is not necessary to hold the protective cap with fingers, and when the protective cap is put on the injection needle after injection, it is possible to prevent accidental piercing of fingertips etc. . Further, by providing the guide means at the opening of the protective cap, the insertion of the injection needle into the protective cap becomes easy.

Specifically, the protective cap of the present invention achieves the following effects. (1) The method of use is simple, reliable and safe. No practice is required to use the protective cap, and anyone can handle it. Also, the protective cap is easily self-supporting. (2) The protective cap of the present invention can be obtained by simply engaging the self-supporting means with both the injection needle and the protective cap which have been commercially available so far. Therefore, it is not necessary to change the commercially available protective cap or the injection needle. (3) It conforms to the OSHA rules described at the beginning. (4) It is easier to manufacture because it can be easily molded, although it is safer than the conventional protection cap.
It becomes cheaper in price.

Although the present invention has been described with reference to the so-called general needle, it is needless to say that the present invention can be applied to various types of injection needles as first exemplified. Especially when the present invention is applied to multiple needles,
The end of each protective cap has a self-supporting means such that the protective cap covers each needle (usually two needles). When using such multiple needles, remove the protective cap from the needles and allow both to stand. After use, the injection needle is inserted and locked into one of the protective caps that are free-standing while the needle remains attached to the syringe (or holder), and are locked and engaged.
Next, the protective cap is supported by a finger, and the injection needle is removed from the syringe while being integrated with the protective cap. Then, the protective cap is supported by a finger, and the other needle exposed at the opening of the other free-standing protective cap is inserted. In this way, the needle can be covered with the protective cap without touching any of the needles with fingers.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing one aspect of a protective cap of the present invention (when applied to a conventional protective cap).

2 is a schematic cross-sectional perspective view of the protective cap shown in FIG. However, the flange-shaped member is rectangular.

FIG. 3 is a plan view schematically showing a preferred embodiment of the protective cap body of the protective cap of the present invention.

FIG. 4 is a schematic sectional view of the protective cap body shown in FIG.

FIG. 5 schematically shows a plan view of the self-supporting means.

FIG. 6 is a schematic view showing a sectional view of the self-supporting means.

FIG. 7 shows schematically how to use the protective cap of the present invention.

FIG. 8 is a perspective view schematically showing another embodiment of the protective cap of the present invention.

FIG. 9 is a schematic plan view of the protective cap shown in FIG. 8;

FIG. 10 is a schematic end view of the protective cap shown in FIG. 9;

FIG. 11 is a plan view schematically showing still another embodiment of the protective cap of the present invention.

FIG. 12 is a schematic cross-sectional perspective view of a mode in which an independent suction cup is used as a self-supporting means.

[Explanation of symbols]

101 ... Protective cap body, 103 ... Opening, 105 ...
Ends, 107 ... Self-supporting means, 109 ... Engaging members, 111 ...
Flange-shaped member, 113 ... Rib, 115 ... Guide means,
Reference numeral 117 ... Engaging means, 119 ... Invitation, 121 ... Recessed portion, 123 ... Recessed portion, 125 ... Convex portion, 127 ... Air vent hole, 131 ... Syringe, 133 ... Injection needle, 135 ... Injection needle accommodating space, 137 ... Desk , 141 ... Ribs, 151 ... Suckers, 153 ... Openings, 155 ... Annular portions, 157 ... Projections, 159 ... Self-supporting means.

Claims (7)

[Claims] 1. A protective cap main body for an injection needle having a cylindrical space portion capable of accommodating the injection needle therein, and one end opposite to one end where an opening for inserting the injection needle into the space portion is located. A protective cap for an injection needle, which is located at the other end and has a self-supporting member for self-supporting the protective cap body. 2. The self-supporting member has means for engaging with the other end of the protective cap body on one side of the self-supporting member, and a flange-like portion for increasing the cross-sectional area of the protective cap of the self-supporting member. The protective cap for an injection needle according to claim 1, which is provided on the other side. 3. The protective cap for an injection needle according to claim 1, wherein the self-supporting member is a plurality of rib-shaped members extending to at least the other end along the axial direction of the protective cap body. 4. The protective cap for an injection needle according to claim 1, wherein the self-supporting member has a function of a suction cup. 5. The protective cap for an injection needle according to claim 1, wherein the protective cap main body has a guide means at the opening. 6. The protective cap for an injection needle according to any one of claims 1 to 5, wherein the self-supporting member has a shape that gives a function of preventing rolling when the protective cap falls down. 7. A self-supporting member for use in the protective cap for an injection needle according to claim 1.