JP2008000554A - Safety needle assembly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety needle assembly which can be manufactured in a small size.
A safety needle assembly (1) includes a needle (2) having a curved portion (2a), a hub (3) to which the distal end portion (2b) of the needle is connected and holding the needle, and a use position in which a tip portion of the needle is protruded. A fixing member 5 that is moved to A and a used position B that accommodates the needle tip 2c of the needle, and a flexible tube body 7 are provided. The tube body has a cutting portion 7a along the longitudinal direction thereof, and when the fixing member is located at the use position, the central portion of the tube body does not accommodate the needle inside. Located in the outer position. In this state, the tip of the needle can be punctured into the living body. When the fixing member is positioned at the used position, the center portion of the tube body accommodates the needle therein via the cutting portion, so that a needle stick accident can be prevented.
[Selection] Figure 1

Description

  The present invention relates to a safety needle assembly that uses a needle having a curved portion. The present invention relates to a safety needle assembly provided with a safety mechanism.

In a medical needle, for example, a needle that punctures a subcutaneously implantable catheter access port is not a general injection needle, but a blade surface that does not cause coring during septum piercing of the port is perpendicular to the puncture direction. A Hoover needle having a shape to be used is generally used. Among them, those having a curved portion bent 90 ° in the middle of the needle and added with wings parallel to the horizontal direction are used for applications such as continuous administration.
In the needle assembly including such a Hoover needle assembly having wings parallel to the horizontal direction, the medical staff and the patient himself may inadvertently puncture the used needle with respect to the needle to be punctured. It has been a problem. It has also been recognized that simply scratching the skin with a used, unprotected, sharp needle is sufficient to develop an infection. In the US, the “Needlestick Safety and Prevention Act Needle Sting Accident Prevention Act” has been enacted, and a safety type needle assembly, especially a safety hoover needle assembly is required.

In order to prevent the above problems, the safety needle assembly includes a needle having a curved portion of approximately 90 °, a hub to which the distal end of the needle is connected to hold the needle, and the hub can be detached from the hub. The thing provided with the fixing member attached to the and the bellows-like tube body which has flexibility is known (patent document 1).
The bellows-like tube body has one end attached to a fixing member and the other end attached to a hub, and a needle is passed through the shaft portion of the tube body.
The fixing member is movable between a use position in which the tip portion of the needle protrudes and a used position in which the needle tip of the needle is accommodated, and when the fixing member is positioned in the use position, The bellows-like tube body is compressed short between the fixing member and the hub to allow the tip portion of the needle to protrude from the fixing member. In this state, the tip of the needle is punctured into the living body, and the fixed portion is fixed to the skin of the living body.
After use, the fixing member can be relatively moved to the used position that accommodates the needle tip of the needle by removing the tip of the needle from the living body while the fixing portion is fixed to the skin of the living body. . In the used position, the bellows-like tube body is elongated between the fixing member and the hub and accommodates the tip portion of the needle therein, so that a needle stick accident can be prevented.
JP 2004-195227 A

The bellows-like tube body is compressed shortly between the fixing member and the hub when the fixing member is positioned at the use position. Therefore, it is difficult to reduce the size of the needle assembly.
In view of such circumstances, the present invention provides a safety needle assembly that can be manufactured in a small size without the need to use a bellows-like tube body.

That is, the invention of claim 1 accommodates a needle having a curved portion, a hub to which the distal end portion of the needle is connected to hold the needle, a use position in which the tip portion of the needle protrudes, and a needle tip of the needle A fixing member that is moved to the used position and a flexible tube body, and the needle is accommodated inside the tube body when the fixing member is positioned at the used position. In the safety needle assembly
The tube body has a cut portion along the longitudinal direction thereof, and when the fixing member is located at the use position, the central portion of the tube body does not accommodate the needle inside. When the fixing member is located at the used position, the central portion of the tube body accommodates the needle therein via the cutting portion.

According to invention of Claim 1, when the said fixing member is located in a use position, since the said tube body has the cutting part along the longitudinal direction, the center part of this tube body is the above-mentioned The needle can be located at an outer position where the needle is not accommodated inside. Therefore, there is no need to secure a space for accommodating the tube body between the fixing member and the hub located at the use position, and the needle assembly can be manufactured in a small size.
And when the said fixing member is located in a used position, since the center part of the said tube body can accommodate a needle | hook in the inside via the said cutting part, a needle stick accident can be prevented.

Hereinafter, the present invention will be described with reference to the illustrated embodiments. In FIGS. 1A to 2B, a safety needle assembly 1 includes a hollow needle 2 having a curved portion 2 a of approximately 90 °, and the needle 2. A hub 3 that holds the base end portion 2b, gripping portions 4 (see FIG. 2B) provided on both sides of the hub 3, and a fixing member 5 that is fixed to the skin of a living body are provided.
The curved portion 2a of the needle 2 is formed between the needle tip 2c formed at the distal end and the proximal end portion 2b, and the hub is such that the proximal end portion 2b is substantially horizontal with respect to the living body installation surface. 3 and the needle tip 2c is directed downward by the curved portion 2a. The end portion of the tube 6 that conveys medicine or the like is connected to the hub 3, and the hollow needle 2 communicates with the inside of the tube 6. The tube 6 is not particularly limited in material as long as it does not interfere with the transportation of a medicine or the like and has flexibility.

  In the illustrated embodiment, a Hoover needle having a blade surface perpendicular to the puncture direction is used as the needle 2. However, if the needle has a curved portion, the opening is at the front end of the needle. A needle can also be used. Further, the bending of the bending portion 2a is approximately 90 °, but is not particularly limited to approximately 90 °. However, the needle 2 can be inserted into the living body simply by holding the gripping part 4 with a finger and pressing it from above, and the tube 6 extends in the horizontal direction with respect to the installation surface, so that the tube 6 can be easily arranged. The curvature of the portion 2a is preferably approximately 90 °.

The fixing member 5 is detachably attached to the bottom portion of the hub 3 via the grip portion 4. In other words, in the present embodiment, the flat plate-like gripping portions 4 provided on both sides of the hub 3 are swung around the rotation axis parallel to the axial direction of the base end portion 2b via hinges (not shown). It is attached movably.
A protruding engagement portion 4a is formed at the inner lower portion of each gripping portion 4, and a concave engagement portion 5a (see FIG. 5) is engaged with the protruding engagement portion 4a on both sides of the fixing member 5. 2 (b)) is formed. In each of the engaging portions 4a and 5a, the engaging portion 4a may be concave and the grip portion 5a may be protruding, or both may be convex.
The engaging portion 4a of the grip portion 4 and the engaging portion 5a of the fixing member 5 are in a state where the fixing member 5 is in contact with the bottom of the hub 3, that is, in a state where the fixing member 5 is positioned at the use position A. In order to be able to be engaged and to maintain the engaged state, a spring (not shown) is mounted between the hub 3 and the inner upper portion of each grip portion 4.

The engaging portion 4a of the grip portion 4 and the engaging portion 5a of the fixing member 5 are normally engaged with each other and held at the use position A where the fixing member 5 is brought into contact with the bottom portion of the hub 3. However, when the hub 3 is detached from the fixing member 5, the upper portions of the gripping portions 4 facing each other may be pressed and moved in a direction approaching each other against a spring (not shown).
As a result, the engagement of both the engaging portions 4a and 5a can be released. Therefore, if the hub 3 is pulled up while holding the gripping portion 4 with respect to the fixing member 5 in this state, the hub with respect to the fixing member 5 can be lifted. The needle 2 can be pulled out of the living body by moving 3 upward.
Note that the grips 4 are not necessarily attached to the hub 3 via hinges. For example, the grips 4 and the hub 3 may be provided integrally with each other via hinges. In this case, the hinge portions integrated with each other may be elastically deformed to engage the engaging portions 4a and 5a, or release the engagement.

The fixing member 5 includes a needle passage 5b that penetrates the distal end portion of the needle 2. The fixing member 5 is in contact with the bottom of the hub 3 in the use position A (FIG. 1 (a), 2) and the used position B (see FIGS. 1B and 2B) in which the needle tip 2c of the needle 2 is accommodated in the needle passage 5b. .
The fixing member 5 is provided with a cylindrical portion 5c on the upper surface thereof toward the hub, and the inside of the cylindrical portion 5c is a part of the needle passage 5b. By providing the cylindrical portion 5c, a long needle passage 5b is secured, thereby preventing the needle tip 2c from being detached from the needle passage 5b when the fixing member 5 is positioned at the used position B. I have to do it.
Then, when the fixing member 5 is moved to the used position B, the distal end portion side of the needle 2 extending from the curved portion 2a to the needle tip 2c of the needle 2 is surrounded by the flexible tube body 7. I can do it. As a result, the needle tip side of the needle 2 is accommodated by the fixing member 5 and the tube body 7.

The tube body 7 is cut along its axial direction, and a part of the needle 2 can be moved in and out of the tube body 7 through the cutting portion 7a. In the natural state, the tube body 7 is configured such that both cut portions 7a are close to each other due to its own elasticity, that is, the cut surface in a direction perpendicular to the axial direction has a tubular cross section.
The lower end portion of the tube body 7 is fixed to the inner surface of a cylindrical portion 5 c provided on the fixing member 5, so that the needle 2 penetrates the inside of the lower end portion of the tube body 7.
The upper end portion of the tube body 7 penetrates a substantially C-shaped guide hole 3a formed in the hub 3 from below to above. At this time, both ends of the C-shaped guide hole 3a are penetrated so that both the cut portions 7a of the tube body 7 are located, and both the cut portions 7a of the tube body 7 are mutually connected by the both ends of the guide hole 3a. A space can be formed between the two cut portions 7a by separating them.
The C-shaped guide hole 3a is not limited to a strictly C-shaped through hole, and may be a generally C-shaped shape such as a square shape, a U shape, or a horseshoe shape.

The C-shaped guide hole 3a formed in the hub 3 is formed at a position surrounding the axis X of the needle 2 on the distal end side with respect to the curved portion 2a, and both ends of the guide hole 3a are formed on the needle 2. It is formed so as to face the base end 2b side. As a result, both the cut portions 7a of the tube body 7 expanded by the both end portions of the guide hole 3a are also directed to the proximal end portion 2b side of the needle 2, and the bent portion 2a extending from the proximal end portion 2b of the needle 2 is Then, the tube body 7 enters the tube body 7 through both the cut portions 7a of the expanded tube body 7.
In the state where the fixing member 5 is located at the use position A in contact with the bottom of the hub 3, the tip portion extending from the bent portion 2 a that has entered the tube body 7 to the needle tip 2 c is the tip of the tube body 7. It is in the state which protruded largely through the part and the needle channel | path 5b of the fixing member 5. FIG.
A large-diameter cylindrical retaining portion 7b is integrally formed at the end portion of the tube body 7 at a predetermined distance from the distal end portion, and the retaining portion 7b passes through the guide hole 3a. It is set to a size that cannot be done. In this embodiment, the retaining portion 7 b is formed integrally with the tube body 7, but it goes without saying that it may be manufactured by a member different from the tube body 7 and fixed to the tube body 7.

The fixing member 5 is provided with closing means 10 for closing the needle passage 5b. The closing means 10 allows the distal end portion of the needle 2 to pass when the fixing member 5 is in the use position A where the fixing member 5 is in contact with the bottom of the hub 3, but the fixing member 5 is in the used position B. When the needle tip 2c of the needle 2 is positioned and moved upward from the closing means 10, the needle passage 5b is closed so that the needle tip 2c does not protrude below the fixing member 5 again. It has become.
In the illustrated embodiment, the closing means 10 includes a passage 11 formed in the fixing member 5 so as to intersect the needle passage 5b, a shutter 12 made of a magnetic material provided so as to be movable along the passage 11, and the shutter 12 And a suction member 13 made of a permanent magnet that sucks and holds the needle passage 5b at a position where the needle passage 5b is closed. At this time, the shutter 12 may be a permanent magnet, and the suction member 13 may be made of a magnetic material.
The shutter 12 always receives the suction force generated by the magnetic force of the suction member 13, but in a state where the fixed member 5 is located at the use position A and the tip of the needle 2 penetrates the needle passage 5b, It is held in contact with the outer peripheral surface. When the fixing member 5 is located at the used position B and the needle tip 2c of the needle 2 is moved above the shutter 12, the needle passage 5b is closed by being attracted by the magnetic force of the suction member 13. It has become.
In this state, the needle tip 2c cannot protrude below the fixing member 5 again, thereby preventing erroneous puncture.

In the first embodiment described above, in a state where the fixing member 5 is located at the use position A in contact with the bottom of the hub 3, the engaging portion 4a of the grip portion 4 and the engaging portion 5a of the fixing member 5 are The fixing member 5 is held at the use position A by engaging with each other.
In this state, the distal end portion of the needle 2 protrudes greatly downward from the fixing member 5, and the shutter 12 is sucked by the suction member 13, but abuts against the outer peripheral surface of the distal end portion of the needle 2 to pass the needle passage 5b. It is blocked from closing. Further, the central portion including the retaining portion 7b of the tube body 7 protrudes greatly upward from the guide hole 3a, and is located at an outer position where the tip portion of the needle 2 is not housed inside.
In this state, if both the gripping portions 4 are gripped, the tip portion of the needle 2 that protrudes greatly downward from the fixing member 5 can be easily obtained by gripping both the gripping portions 4 below the hinge (not shown). In this state, the fixing member 5 may be fixed to the skin of a living body.

When the needle 2 is removed from the living body, the upper end portions of both the gripping portions 4 are gripped, and if both are brought close to each other against a spring (not shown), the engagement portion 4a of the gripping portion 4 and the fixing member 5 are engaged. The engagement with the joint portion 5a can be released. If the hub 3 and the needle 2 are pulled up together with the gripping part 4 in this state, the needle 2 can be removed from the living body, and at the same time, the fixing member 5 is moved relative to the needle 2 toward the needle tip 2c. .
When the fixing member 5 is moved to the needle tip 2c side, the central portion of the tube body 7 connected to the cylindrical portion 5c of the fixing member 5 is drawn downward through the guide hole 3a. As described above, since the bent portion 2a of the needle 2 has entered the both cut portions 7a of the tube body 7 expanded by the C-shaped guide hole 3a, the central portion of the tube body 7 is the guide hole 3a. When the tube body 7 is pulled downward through the tube 2, the tube body 7 is covered from the outside of the bent portion 2 a toward the tip end portion of the needle 2. Is accommodated via the cutting portion 7a.

When the fixing member 5 is in the used position B and the needle tip 2c of the needle 2 exceeds the shutter 12, the shutter 12 is sucked by the suction member 13 to close the needle passage 5b. It is prevented that 2c protrudes downward from the fixing member 5 again.
At the same time, the retaining portion 7b provided at the end portion of the tube body 7 is in a position close to the guide hole 3a, whereby the tube body 7 is stretched between the hub 3 and the fixing member 5. Therefore, the hub 3 and the fixing member 5 cannot be further separated from each other.
As a result, the needle tip 2c is held in the needle passage 5b, particularly in the cylindrical portion 5c of the fixing member 5, and the needle tip 2c may be exposed to the outside from the cutting portion 7a of the tube body 7. Can be prevented.

3 (a) to 4 (b) show a second embodiment of the present invention, in which the above embodiment fixes one end of the tube body 7 to the fixing member 5, while this embodiment Then, one end of the tube body 7 is fixed to the hub 3.
That is, in this embodiment, one end of the tube body 7 is fixed to the hub 3, while the guide hole 3 a is formed in the cylindrical portion 5 c of the fixing member 5. Therefore, in a state where the fixing member 5 is located at the use position A, that is, in a state where the cylindrical portion 5c of the fixing member 5 is close to the hub 3, the tube body 7 is moved from the hub 3 to the cylindrical portion 5c. The formed guide hole 3a extends slidably through the guide hole 3a.
In this state, one end portion of the tube body 7 connected to the hub 3 accommodates the needle 2 in the inside thereof from the proximal end portion 2b of the needle 2 to the curved portion 2a. Is outside from the curved portion 2a of the needle 2 and slidably penetrates the guide hole 3a so that the needle 2 is not accommodated inside. In other words, the tip portion from the curved portion 2 a of the needle 2 to the needle tip 2 c is exposed to the outside of the tube body 7.

The guide hole 3a formed in the cylindrical portion 5c is formed so as to surround the tip portion of the needle 2 along the circumferential direction of the cylindrical portion 5c, and both end portions thereof are obliquely upward toward the hub 4 side. It is formed so as to face. The guide hole 3 a is formed such that both ends of the guide hole 3 a are on the proximal end 2 b side of the needle 2 in a state where the fixing member 5 is located at the use position A.
As a result, both cut portions 7a of the tube body 7 that are expanded by both end portions of the guide hole 3a are also directed to the proximal end portion 2b side of the needle 2.
Other configurations are the same as those of the first embodiment, and the same or corresponding parts are denoted by the same reference numerals as those of the first embodiment.

In the second embodiment described above, in the state where the fixing member 5 is located at the use position A where it contacts the bottom of the hub 3, as in the first embodiment, by gripping both the grip portions 4, The tip of the needle 2 that protrudes greatly downward from the fixing member 5 can be easily punctured into the living body.
When the needle 2 is removed from the living body, when the hub 3 is pulled up with respect to the fixing member 5, the central portion of the tube body 7 connected to the hub 3 is pulled upward through the guide hole 3a. It comes to be. At this time, since both end portions of the guide hole 3a are formed on the proximal end portion 2b side of the needle 2 as described above, both the cut portions 7a of the tube body 7 are also directed toward the proximal end portion 2b side of the needle 2. In this way, the tube body 7 is covered from the outside of the bent portion 2a toward the tip portion of the needle 2 so that the cutting portion is sequentially inserted into the central portion of the tube body 7. 7a is accommodated.
When the fixing member 5 reaches the used position B, the shutter 12 is sucked by the suction member 13 to close the needle passage 5b, and the retaining portion 7b provided at the distal end of the tube body 7 has a guide hole 3a. Therefore, the tube body 7 is stretched between the hub 3 and the fixing member 5, and the hub 3 and the fixing member 5 can no longer be separated from each other. As a result, the needle tip 2c is held in the needle passage 5b.

FIGS. 5 (a) to 6 (b) show a third embodiment of the present invention. In any of the above embodiments, one end of the tube body 7 is fixed to the hub 3 or the fixing member 5. FIG. On the other hand, in this embodiment, one end of the tube body 7 is fixed to the hub 3 and the other end is fixed to the fixing member 5.
That is, in this embodiment, one end of the tube body 7 is fixed to the hub 3, while the other end of the tube body 7 is fixed to the cylindrical portion 5 c of the fixing member 5. In the state where the fixing member 5 is located at the use position A, the central portion of the tube body 7 is greatly curved to the side opposite to the proximal end portion 2b of the needle 2 so that the needle 2 is not housed inside. It is located outside. In this state, the needle 2 is housed only in one end portion of the tube body 7 fixed to the hub 3 and the other end portion of the tube body 7 fixed to the cylindrical portion 5c.
At this time, the cutting portion 7a of the tube body 7 is directed toward the proximal end portion 2b side of the needle 2 in order to greatly curve the central portion of the tube body 7 from the curved portion 2a of the needle 2 to the side opposite to the proximal end portion 2b. The length of the tube body 7 is set to an optimum length in consideration of the length of the needle 2.
Other configurations are the same as those of the first embodiment, and the same or corresponding parts are denoted by the same reference numerals as those of the first embodiment.

In the third embodiment described above, in a state where the fixing member 5 is located at the use position A where the fixing member 5 is in contact with the bottom portion of the hub 3, as in the first embodiment, by gripping both the grip portions 4, The tip of the needle 2 that protrudes greatly downward from the fixing member 5 can be easily punctured into the living body.
When the needle 2 is removed from the living body, when the hub 3 is pulled up with respect to the fixing member 5, the central portion of the tube body 7 connected to the hub 3 and the fixing member 5 is gradually stretched accordingly. The needle 2 approaches the curved portion 2a of the needle 2 from the outside. When the fixing member 5 reaches the used position B, the shutter 12 is sucked by the suction member 13 to close the needle passage 5b, and the tube body 7 is stretched between the hub 3 and the fixing member 5. Therefore, the needle 2 is accommodated in the central portion of the tube body 7 through the cutting portion 7a.
In this state, since the tube body 7 is stretched between the hub 3 and the fixing member 5, the hub 3 and the fixing member 5 cannot be further separated from each other. 2c comes to be held in the needle passage 5b.

In addition, although the closing means 10 in each said Example is equipped with the shutter 12 and the suction member 13, it is not limited to this. For example, the closing means using the spring used in Patent Document 1 may be used.
Further, in each of the above embodiments, when the fixing member 5 is set to the used position B, the needle tip 2c of the needle 2 is positioned in the needle passage 5b of the fixing member 5, but this is not limitative. It is not a thing. For example, the cutting portion 7a is not formed in a portion adjacent to the fixing member 5 of the tube body 7, and when the fixing member 5 is set to the used position B, the needle tip 2c of the needle 2 is the tube body 7 without the cutting portion 7a. Even if it is housed inside, a needle stick accident can be prevented.

FIG. 1 shows a first embodiment of the present invention, and (a) is a sectional view showing a use state of a needle assembly 1. (B) is sectional drawing which shows the used state of the needle assembly 1. FIG. (A) is a perspective view of Fig.1 (a), (b) is a perspective view of FIG.1 (b). The 2nd example of the present invention is shown, (a) is a sectional view showing the use state of needle assembly 1. (B) is sectional drawing which shows the used state of the needle assembly 1. FIG. (A) is a perspective view of FIG. 3 (a), (b) is a perspective view of FIG.3 (b). The 3rd Example of this invention is shown, (a) is sectional drawing which shows the use condition of the needle assembly 1. FIG. (B) is sectional drawing which shows the used state of the needle assembly 1. FIG. (A) is a perspective view of Fig.5 (a), (b) is a perspective view of FIG.5 (b).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Safety needle assembly 2 Needle 2a Curved part 2b Base end part 2c Needle tip 3 Hub 3a Guide hole 4 Gripping part 4a Engagement part 5 Fixing member 5a Engagement part 5b Needle passage 5c Cylindrical part 7 Tube body 7a Cutting part 7b Detachment part 10 Closing means 11 Passage 12 Shutter 13 Suction member A Use position B Used position X Axis of tip of needle 2

Claims (11)

A needle having a curved portion, a hub to which the distal end portion of the needle is connected and holding the needle, a use position in which the tip portion of the needle protrudes, and a used position in which the needle tip of the needle is accommodated. A safety needle assembly, and a flexible tube body, wherein the needle is accommodated inside the tube body when the fixing member is positioned at a used position.
The tube body has a cut portion along the longitudinal direction thereof, and when the fixing member is located at the use position, the central portion of the tube body does not accommodate the needle inside. The safety needle assembly, wherein the central portion of the tube body accommodates the needle through the cutting portion when the fixing member is located at the used position. .   One end of the tube body is connected to a fixing member, and the other end of the tube body slidably penetrates a guide hole provided at a required position of the hub, and the fixing member is located at a use position. In this case, the central portion including the other end of the tube body protrudes from the guide hole and is located at the outer position, and when the fixing member is moved to the used position, the fixing member is used. 2. The safety needle assembly according to claim 1, wherein the central portion of the tube body is drawn into the guide hole as the position is moved, and the needle is accommodated therein through the cutting portion. The guide hole is formed in a substantially C shape, and is formed at a position that surrounds the axis of the needle at the distal end portion rather than the curved portion of the needle, and so that both end portions of the guide hole face the proximal end side of the needle. And
The tube body is passed through the guide hole so that both the cut portions of the tube body are located at both ends of the guide hole, and both the cut portions of the tube body are separated from each other by the both ends of the guide hole. When the bent portion extending from the proximal end portion enters the tube body through both the cut portions of the separated tube body, the distal end from the outside of the bent portion of the needle is moved when the fixing member is moved to the used position. 3. The safety needle assembly according to claim 2, wherein the tube body is placed on the needle so as to face the portion.   One end of the tube body is connected to a hub, and the other end of the tube body slidably penetrates a guide hole provided at a required position of the fixing member, and the fixing member is positioned at the use position. In this case, the central portion including the other end of the tube body protrudes from the guide hole and is located at the outer position, and when the fixing member is moved to the used position, the fixing member is used. 2. The safety needle assembly according to claim 1, wherein the central portion of the tube body is drawn into the guide hole as the position is moved, and the needle is accommodated therein through the cutting portion.   A cylindrical portion is provided on the fixing member toward the hub side, and a tip portion of the needle penetrates the cylindrical portion, and the guide hole is formed in the cylindrical portion. It is formed so as to surround the tip of the needle along the circumferential direction of the shaped portion, and the tube body is penetrated through the guide hole so that both cut portions of the tube body are located at both ends of the guide hole. The both ends of the tube body are separated from each other by the both ends of the guide hole, and when the fixing member is moved to the used position, the tube body is moved from the outside of the bent portion of the needle toward the tip portion. 5. The safety needle assembly according to claim 4, wherein the safety needle assembly is covered and accommodated therein.   The guide hole has both end portions, and the tube body is passed through the guide hole so that both cut portions of the tube body are located at both end portions of the guide hole. The safety needle assembly according to claim 2 or 4, wherein the cutting parts are separated from each other.   When the other end of the tube body that protrudes from the guide hole and is located at the outer position is provided with a retaining portion having a size that cannot pass through the guide hole, the fixing member is moved to the used position. 7. The method according to any one of claims 2 to 6, wherein the retaining portion is located at a position close to the guide hole so that the tube body is stretched between the fixing member and the hub. A safety needle assembly according to claim 1.   One end of the tube body is connected to the hub and the other end is connected to the fixing member. When the fixing member is located at the use position, the central portion of the tube body is curved at the outer position, The tube body is stretched along the needle when the fixing member is moved to the used position, and the needle is accommodated therein through the cutting portion. Safety needle assembly.   A gripping portion is provided on each side of the hub, and an engaging portion is provided that can be engaged with one end portion of the gripping portion and the fixing member. The engaging portions are engaged with each other to fix the fixing member. Is held at the use position, and the other end portions of both gripping portions face each other, and when the other end portions of both gripping portions are pressed toward each other, The safety needle assembly according to any one of claims 1 to 8, wherein the safety needle assembly is released. The fixing member includes a needle passage that allows the tip portion of the needle to pass therethrough, and a closing unit that closes the needle passage,
The closing means allows the tip of the needle to pass when the fixing member is in the use position, and the fixing member is located in the used position so that the needle tip of the needle exceeds the closing means. 10. The safety needle assembly according to claim 1, wherein the needle passage is closed when the needle tip is moved to prevent the needle tip from protruding from the fixing member again. The closing means includes a passage formed in the fixing member so as to intersect the needle passage, a shutter provided movably along the passage, and a suction member for sucking and moving the shutter to a position for closing the needle passage. One of the shutter and the suction member is made of a magnetic material, and the other is made of a permanent magnet.
The shutter is held in contact with the outer peripheral surface of the needle by the suction member when the fixing member is located at the use position and the tip of the needle passes through the needle passage. 11. The safety needle assembly according to claim 10, wherein when the needle tip is positioned and moved beyond the shutter, the needle passage is closed by being moved by the suction member.

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