JP2001204818A - Needle for medical use, and medical instrument using same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a needle for medical use in which containing a hollow needle can be started without applying a large force, and a medical instrument using the same. SOLUTION: This needle 10 for medical use is provided with a hollow needle 3, a hub 4, and a hollow needle protective part 5. The hollow needle protective part 5 is provided with a main body part 6, a hollow needle containing part 7 to contain the hollow needle 3, and an energization means 8 possessing an energization energy for energizing the hollow needle containing part 7, and the hollow needle protective part 5 is provided with an energization means energy possession condition maintaining mechanism for holding an energization energy possession condition of the energization means 8, and art exposed condition of the hollow needle 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to drug administration, blood collection,
The present invention relates to a medical needle used for blood transfusion, infusion, and the like, and a medical device such as a syringe, a blood bag, an infusion bag, a blood transfusion set, and an infusion set provided with the needle.

[0002]

2. Description of the Related Art In recent years, many accidents have been reported in which a medical needle such as a syringe used for an infectious disease patient accidentally injures a finger or an arm and infects with a pathogenic bacterium. The above-mentioned accident is likely to occur when a medical needle is covered with a cap for safety after use on a patient. In order to solve the above-mentioned problem, Japanese Patent Application Laid-Open No. 10-113391 discloses a cap fixing portion to be attached to a syringe body, a rotatable connection to the cap fixing portion via a hinge portion, and a syringe needle. A cap body, a spring for rotating the cap body in a direction for storing the hollow needle, and after storing the hollow needle,
An invention of a cap for an injection needle including a lock device for fixing a cap body to a cap fixing portion is disclosed. In the present invention, the cap body can be fixed to the syringe body in advance, and when the hollow needle is stored, the hollow needle is automatically stored by the rotation of the cap body by the bias of the spring,
The cap body and the cap fixing portion are fitted by the lock device.

[0003]

However, in the above configuration, in order to rotate the cap main body, it is necessary to first press the cap main body to some extent. As the elastic force of the spring increases, the user must press the cap main body more strongly. Must
There is a possibility that the finger or the like may be accidentally damaged by the hollow needle due to slipping of the finger. As described above, an object of the present invention is to solve the above-mentioned problems and to provide a medical needle capable of starting storage of a hollow needle without applying a large force, and a medical tool using the same.

[0004]

The above object is achieved by a hollow needle, a hub fixed to a proximal end of the hollow needle,
A medical needle provided with a hollow needle protection portion for protecting the hollow needle, wherein the hollow needle protection portion is attached to the hub or a medical instrument attached to the hub or attached to the hub or the hub. A body portion integrally formed with the medical instrument to be used, a hollow needle storage portion having one end rotatably attached to the body portion, and a groove portion for storing the hollow needle after use. Biasing means for retaining biasing energy and biasing the hollow needle storage section, wherein the hollow needle protection section holds the biasing energy retaining state of the biasing means and the exposed state of the hollow needle. And a biasing means energy holding state maintaining mechanism.

The state maintenance of the medical needle by the urging means energy holding state maintaining mechanism is released by rotating the hollow needle storage section, and
The urging means after the maintenance state is released by the maintenance mechanism,
It is preferable that the hollow needle storage portion is rotatable until the hollow needle is stored in the groove. Further, in the state in which the hollow needle is stored in the groove of the storage portion by rotating the storage portion, the hollow needle protection portion may be configured such that the energy holding state is partially released by the urging means. It is preferable to include a storage unit rotation suppressing mechanism by enclosing a rotation mechanism portion of the storage unit with the main body or a part of the storage unit that stores the hollow needle. Further, it is preferable that the urging means is made of a coil spring, a bellows tube, or a linear or plate-like elastic body connecting the two ring-shaped members. Further, it is preferable that the rotating mechanism is made smaller than the inner diameter of the coil spring, the bellows tube or the two ring-shaped members. Further, it is preferable that the storage portion is rotatable in a direction coaxial with the hollow needle from a state intersecting the hollow needle. In addition, the storage section,
It is preferable that it is formed so as to be bent in a plurality of stages. Further, the biasing means energy holding state maintaining mechanism is constituted by one side end of the storage section and the main body in a state intersecting with the hollow needle, and the biasing means in a state of holding the biasing energy. It is preferable that one end of the contact portion abuts on one side end portion of the storage portion in a non-extendable state, and the other end contacts the main body portion in a non-extendable state. In addition, it is preferable that the one end portion of the storage portion and the main body portion be fitted in a state where the hollow needle is stored.

What achieves the above-mentioned object is the medical needle, and the hollow needle protector holds the biasing energy holding state of the biasing means by the main body portion and the hollow needle storage portion. Further, in the urging means energy holding state, the energy holding state of the urging means is automatically released by manually starting the initial rotation of the hollow needle storage section. And
The hollow needle accommodating portion is automatically rotated by the extension action of the urging means released from the energy holding state, and the hollow needle is accommodated in the groove of the hollow needle accommodating portion, and the energy holding state is released. A part of the extended urging means covers a part of a rotating mechanism of the storage part with respect to the main body part or a part of a storage part storing the hollow needle, thereby rotating the hollow needle storage part. Is to suppress.

[0007] Further, what achieves the above object is a medical device provided with a medical device and the medical needle attached to the medical device. The urging means energy holding state maintaining mechanism includes a housing-side engaging portion provided at the other end of the housing portion, and the medical-use engaging portion detachably engaged with the housing-side engaging portion. The medical device preferably comprises a medical device-side engaging portion provided on the device. In addition, it is preferable that the storage section is formed so as to bend in the middle.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A medical needle and a medical device using the same according to the present invention will be described with reference to preferred embodiments. FIG.
Is an external view showing an embodiment of the medical device provided with the medical needle of the present invention, FIG. 2 is a front view of the medical device of FIG. 1, and FIG.
FIG. 4 is a partially enlarged view of the medical needle portion of FIG. 1; FIG. 4 is a partially enlarged view of the medical needle portion of FIG. 1 (in which the hollow needle protector and the hub are integrally formed); FIG. 6 is a partially enlarged view of the medical needle portion of FIG. 6, and FIG.
FIG. 2 is an explanatory diagram of the operation of the medical device in FIG. 1. FIG.
The lower side is described as “distal end”, the upper side as “proximal end”, the left side of FIGS. 3, 4, 6 and 7 as “distal end” and the right side as “proximal end”.

The medical needles 10 and 110 of the present invention include a hollow needle 3 and hubs 4 and 104 fixed to the proximal end of the hollow needle 3.
And a hollow needle protection section 5, 105 for protecting the hollow needle 3.
And a hollow needle protection part 5, 105
Are attached to the hub 4 or the medical device 30 attached to the hub 4, or are formed integrally with the hub 104 or the medical device 30 attached to the hub 104; A hollow needle storage part 7 having a rotatable mounting 71 and a groove 72 for storing the used hollow needle 3, and a urging part 71 for holding the urging energy and urging the hollow needle storage part 7. The hollow needle protection portions 5 and 105 are provided with an urging means energy holding state maintaining mechanism for holding the urging energy holding state of the urging means 8 and the exposed state of the hollow needle 3. . Further, the maintenance of the state of the medical needles 10 and 110 by the urging means energy holding state maintaining mechanism is released by rotating the hollow needle storage section 7,
The urging means 8 after the maintenance state is released by the maintenance mechanism is
The hollow needle storage section 7 can be rotated until the hollow needle 3 is stored in the groove 72. Further, the hollow needle protection portions 5 and 105 are provided with one of the urging means 8 in which the energy holding state is released in a state where the hollow needle 3 is stored in the groove 72 of the storage portion 7 by rotating the storage portion 7. The parts are the main body parts 6, 1 of the storage part 7.
06 or a part of the storage part 7 that stores the hollow needle 3 is provided.

In other words, the medical needles 10 and 110 of the present invention are used for protecting the hollow needle 3, the hubs 4 and 104 fixed to the proximal end of the hollow needle 3, and the hollow needle 3. A medical needle provided with the hollow needle protection portions 5, 105, wherein the hollow needle protection portions 5, 105 are attached to the hub 4 or the medical device 30 attached to the hub 4, or attached to the hub 104 or the hub 104. It has a main body 6, 106 formed integrally with the medical device 30, and a groove 72 for accommodating one end 71 rotatably to the main body 6, 106 and for accommodating the hollow needle 3 after use. The hollow needle housing 7 includes an elastic member (in other words, biasing means) 8 compressed between the main body parts 6 and 106 and the hollow needle housing 7. The hollow needle protection portions 5 and 105 are configured to hold the elastic member 8 in a compressed state (in other words, in a state of holding the biasing energy) and to hold the hollow needle 3 exposed. Energy retention mechanism). In addition, the hollow needle protection part 5, 105
The groove 7 of the storage 7 is rotated by rotating the storage 7.
In the state in which the hollow needle 3 is stored in the housing 2, the compressed state (in other words, the biasing energy holding state) is released, and a part of the expanded elastic member 8 is rotated with the main body parts 6 and 106 of the storage part 7. A storage section rotation suppression mechanism is provided by enclosing a part 9, 109 or a part of the storage section 7 in which the hollow needle 3 is stored.

The medical devices 1 and 100 of the present invention include a medical device 30 and medical needles 10 and 110 mounted on the medical device 30. The medical needles 10, 110 are
Hollow needle 3, hub 4, 104 and hollow needle protector 5,
105.

As shown in FIGS. 1, 3 and 4, the hollow needle 3 is made of a metal such as stainless steel, aluminum or titanium or a hard resin such as polyphenylene sulfide, and has a sharp tip. It has a needle point. The base end of the hollow needle 3 is attached to the hub 4 by an adhesive (not shown) such as an epoxy resin, or by fusion or caulking.
104.

As shown in FIG. 3, the hub 4 is provided with a passage (not shown) for inserting the hollow needle 3 at the center on the distal end side, and the inside of the proximal end side is provided with a medical device 30 such as a syringe. (Lure tip) can be connected. Further, as shown in FIG. 3, the outside of the hub 4 is tapered toward the distal end, and the diameter thereof is reduced, and the main body 6 of the hollow needle protector 5 can be attached to this portion. The hub 104 is the same as that shown in FIG.
As shown in FIG.
06 and a hollow needle 3 in the center on the tip side.
The distal end (luer tip) of the medical device 30 such as a syringe can be connected to the passage for inserting the medical instrument 30 and the inside of the base end side.

As shown in FIGS. 1 to 5, the hollow needle protectors 5 and 105 comprise main bodies 6 and 106, a storage section 7, and a biasing means 8. The main body 6 has a passage 64 into which the hollow needle 3 and the hub 4 fixed to the proximal end of the hollow needle 3 can be inserted.
In the embodiment, the hollow needle 3 and the hub 4 can be provided with the hollow needle protector 5 by making the inner shape of the base end side of the main body 6 substantially the same as the outer shape of the hub 4. it can. In addition, as shown in FIGS. 1 to 5, the distal end portion 61 of the main body 6 is made smaller in diameter than the proximal end portion 63. The distal end portion 61 is connected to one end portion 71 of the storage portion 7 described later, and the storage portion 7 is connected to the distal end portion 6.
It is manufactured so as to be rotatable around 1 as a fulcrum. The main body 106 is not different from the main body 6 except that the main body 106 is integrally formed with the hub 104 as shown in FIG. 4, and the distal end portion 161 and the proximal end portion 163 are similar to the main body 6. It has. In the embodiment of the present invention, the hollow needle protector 5 is attached to the outside of the hub 4 via the main body 6, but is attached to the medical device attached to the hub 4 via the main body. Is also good. Also,
In the present invention, the main body 106 of the hollow needle protector 105 is formed integrally with the hub 104, but may be formed integrally with the medical device.

The hollow needle storage part 7 is formed in a sheath shape as shown in FIGS. 1 to 7, and stores the used hollow needle 3 inside a part of the storage part 7 excluding the vicinity of one end 71. Has a groove 72 for it. The groove 72 is formed on the hollow needle 3 side of the storage part 7 as shown in FIGS. 1 and 2, and can store the hollow needle 3 from the side when the storage part 7 is rotated. In addition, the storage section 7 includes a distal-end-side enlarged portion 73 that is made larger in diameter than other portions so as to completely cover the sharp needle tip of the hollow needle 3 on the distal end side. Further, a wall is formed on the side surface of the storage portion 7 opposite to the groove portion 72 except for the vicinity of one end portion 71 of the storage portion 7 so that blood attached to the hollow needle 3 does not leak to the outside as much as possible. I have. One end 71 of the storage section 7 is connected to the distal end portions 61 and 161 and is made to be rotatable via the distal end portions 61 and 161. Specifically, as shown in FIG. 5, one end 71 of the storage section 7 is connected to the distal end portions 61, 161 of the main body sections 6, 106.
Is bifurcated so as to sandwich it from both sides. The connection between the one end 71 of the storage section 7 and the distal end portions 61 and 161 is shown in FIGS.
As shown in FIG. 5, convex portions 62 and 162 provided near the center of both side surfaces of the distal end portions 61 and 161, and concave portions formed near the center of the respective inner surfaces of the forked portions of the one end portion 71. 74 is performed by fitting. Thereby, both are connected, and the storage section 7 can be rotated via the distal end portions 61 and 161. In addition, the tip side portion 6
The connection between the first and the 161 and the storage section 7 is not limited to the above-described one, and a rotatable fitting between a concave section provided on the distal end portion 61 and the convex section provided on the storage section 7, It may be performed by rotatably fixing the one end portion 71 and the distal end side portions 61 and 161 with a pin or the like. Also, the side of the one end 71 where the groove 72 is formed is housed so that the one end 71 can be easily housed inside the urging means 8 as shown in FIGS. 1, 3, 4, 6 and 7. It has a shape that is largely chamfered toward one end of the portion 7. Specifically, one end portion 71 of the storage portion 7 has a flat surface having an edge at the end on the side of the contact surface (one side end portion 75) with the urging means 8. The non-contact surface side (the groove forming surface, the other side end) is a continuous curved surface that is largely chamfered. Further, in a state where the hollow needle 3 shown in FIG. 7 is housed, it is preferable that the one end 71 of the housing 7 is fitted to the main bodies 6 and 106.

In this embodiment, the biasing means 8 is a coil spring, and the tip portions 61 and 161 of the main body portions 6 and 106 are provided.
Is provided. As shown in FIG. 1, before the use of the hollow needle 3, the urging means 8 includes the main body parts 6, 10, 10, 12, 13, 12, the base ends of which are made larger than the inner diameter of the urging means 8.
6, the distal end 8 of the urging means 8
1 is compressed (holds energizing energy) by abutting against one side end 75 of the hollow needle storage 7. Here, the compression of the urging means 8 is performed so that the hollow needle storage part 7 rotates and urges in the direction in which the hollow needle 3 is stored.
In order to prevent the biasing means 8 from being displaced from the main body portions 6 and 106, a groove may be formed in a portion of the proximal end portions 63 and 163 in contact with the proximal end of the biasing means 8. Also, the urging means 8
The inner diameter of one end 7 of the hollow needle housing 7 is as shown in FIG.
It is made larger than the outer diameter of the connecting portion between the first and first end portions 61 and 161, ie, the rotating mechanism portions 9 and 109. For this reason, as shown in FIG. 7, after the hollow needle is stored, at least the rotating mechanism portions 9 and 109 are pushed by the urging means 8.
It is to be stored inside. Further, it is preferable that the inner diameter of the urging means 8 is slightly larger than the rotation mechanism portions 9 and 109 so that the storage section 7 cannot rotate. In the embodiment, the urging means 8 in the non-compressed state is used.
Has a length that can accommodate most of the storage unit 7, but is not limited to this, and it is sufficient that at least a part of the storage unit can be stored. This is because if at least a part of the storage section 7 is stored, the storage section 7 does not rotate after storing the hollow needle.

As the urging means, in addition to the above-described coil spring, a bellows tube, a linear elastic body 85 connecting the two ring-shaped members 83, 84 shown in FIGS. The urging means 82 composed of a plate-like elastic body connecting the two ring-shaped members to each other may be used. The linear elastic body 85 of the urging means 82 is provided perpendicular to the storage section 7 so as not to interfere when the hollow needle is used. Further, in the embodiment, the two ring-shaped members of the urging means 82, that is, the distal-side ring member 83 and the proximal-side ring member 84 are connected by two linear elastic bodies 85, but the present invention is not limited to this. However, they may be connected by three or more linear elastic bodies. Further, as the linear elastic body 85, it is preferable to use a superelastic metal wire such as a TiNi alloy, a Cu-Zn alloy, a Cu-Zn-X alloy, or a wire made of stainless steel.

The hollow needle protectors 5 and 105 have an urging means energy holding state maintaining mechanism for holding the urging energy holding state of the urging means 8 and the exposed state of the hollow needle 3.
The urging means energy holding state maintaining mechanism of this embodiment includes:
It is constituted by one side end portion 75 of the storage portion 7 and the main body portions 6 and 106 in a state of intersecting with the hollow needle 3.
Then, one end of the urging means 8 is connected to one side end 75 of the storage section 7.
When the other end abuts on the main body parts 6 and 106 in a non-extendable state, the biasing energy holding state (compressed state) is maintained. In particular,
Before and during use of the hollow needle 3 shown in FIG. 1, the distal end 81 of the urging means 8 abuts one side end 75 of the storage section 7,
The other end is in contact with the base end portions 63 and 163 of the main body portions 6 and 106. In this state, the urging means 8 is compressed, and the storage section 7 stands up so as to be substantially perpendicular to the hollow needle 3. The contact between the urging means 8 and the one side end 75 of the storage portion 7 is such that the one side end 75 contacts the urging means 8 at two places and the one side end 7.
This is achieved by manufacturing the biasing means 8 so that the tip of the wire 5 is located outside the center of the wire (thickness) of the urging means 8. In other words, as shown in FIG. 1, before and during use of the hollow needle 3, the tip 81 of the urging means 8 is engaged with the one side end 75 of the storage part 7, so that the storage part 7 is , And is in a state of standing almost vertically with respect to, and holds a state where the hollow needle 3 is exposed. Further, the hollow needle exposure state is surely performed by the urging means 8 in the compressed state pushing the one side end 75 of the storage section 7 to the front end side by the extension action. The exposed state of the hollow needle 3 may be securely held by attaching a ring to the tip of the biasing means 8 inclined obliquely and flattening the tip.

The hollow needle protectors 5 and 105 are released from the energy holding state (compressed state) when the hollow needle 3 is stored in the groove 72 of the storage section 7 by rotating the storage section 7. Of the storage unit 7 by enclosing a part of the rotating mechanism 9, 109 with the main body 6, 106 of the storage unit 7 or a part of the storage unit 7 storing the hollow needle 3. It has a suppression mechanism. Further, the maintenance of the state by the urging means energy holding state maintaining mechanism is released by rotating the hollow needle accommodating portion 7, and the urging means 8 after the maintenance state is released by the maintaining mechanism is provided with the hollow needle in the groove 72. The hollow needle storage part 7 can be rotated until the storage part 3 is stored.
Specifically, as shown in FIGS. 6 and 7, after the hollow needle is used, the storage portion 7 which stands substantially perpendicular to the hollow needle 3.
The tip 81 of the urging means 8 is manually moved down to the tip side.
The contact between the housing and the one side end portion 75 of the storage section 7 is released, and the biasing energy of the biasing means 8 is held (compressed state).
Is released, and the rotation starts. The rotation is performed by the extension action of the urging means 8, the outside of the storage section 7 is pushed up to the tip side, and the entire hollow needle 3 is finally stored in the groove 72.
In this state, most of the storage portion 7 and the front end portions 61 and 161 (the rotation mechanism portions 9 and 1
09 is accommodated in the urging means 8 almost in close proximity. Thereby, even if the storage unit 7 is pushed in the direction in which the hollow needle 3 is exposed, the storage unit 7 including the rotating mechanism 9
Is in contact with the inner surface of the urging means 8, so that the rotation of the storage section 7 is suppressed. Further, since the outer diameter of the distal-side enlarged portion 73 is made larger than the inner diameter of the urging means 8, the urging means 8 does not come off to the distal end side. In the embodiment, the urging means 8 suppresses the rotation of the storage unit 7 by storing the majority of the storage unit 7 and the rotation mechanism unit 9, but is not limited to this. The rotation of the storage unit can be suppressed by enclosing a part of the urging unit with a part of the rotation mechanism with respect to the main body of the storage unit or a part of the storage unit that stores the hollow needle. For example, even if the biasing means is a coil spring having a length that can store only a part of the storage section, the rotation of the storage section can be accurately suppressed.

Further, the urging means 82 is used instead of the coil spring.
Similarly to the hollow needle protector 5, the hollow needle protector 125 of the medical device 120 using the device includes a biasing unit energy holding state maintaining mechanism and a storage unit rotation suppressing mechanism. Note that the medical device 120 is configured such that the urging means 82 has two ring-shaped members 8.
The medical device 1 is the same as the medical device 1 described above, except that it comprises a linear elastic body 85 connecting the ring-shaped members 83, 84 with the ring-shaped members 3, 84. Specifically, as shown in FIGS. 17 to 19, before and during use of the hollow needle 3, the distal end of the distal end side ring member 83 is engaged with the one side end 75 of the storage section 7 to store the hollow needle 3. The portion 7 stands substantially perpendicularly to the hollow needle 3 and keeps the hollow needle 3 exposed. Next, the storage portion 7 is manually tilted to the distal end side to release the engagement between the one side end portion 75 and the distal end side ring member 83, and the storage portion 7 is urged by the linear elastic body 85 toward the distal end side. Pivots, and finally the groove 7 of the hollow needle storage 7
The hollow needle 3 is stored in 2. In the hollow needle storage state, the distal ring member 83 covers a part of the storage portion 7 near the base end side of the distally enlarged portion 73 of the storage portion 7, and the rotation of the storage portion 7 is performed in the same manner as described above. The movement is suppressed.

From the above, the medical needles 10 and 11 of the present invention are described.
0 and 130 can release the biasing energy holding state of the biasing means with a small force, easily start storing the hollow needle, and after storing the used hollow needle in the storage portion. Can greatly reduce the possibility that the hollow needle is exposed.

The medical device 30 is a syringe in the embodiment, and is connected to the hubs 4 and 104 of the medical needle 1 at the distal end as shown in FIGS. 1, 3 and 4. The medical device 30 is not limited to those described above, and may be a blood bag, an infusion bag, a blood transfusion set, an infusion set, or the like.

Next, another embodiment of the medical needle of the present invention will be described. FIG. 8 is an external view showing another embodiment of the medical device provided with the medical needle of the present invention, FIG. 9 is a front view of the medical device of FIG. 8, and FIG. 10 is used for the medical device of FIG. FIG. 11 is a partially enlarged view of an engagement portion between the storage section and the medical device.
Is a partially enlarged view of the medical needle part of FIG. 8, and FIG.
FIG. 13 is a diagram illustrating the operation of the medical device of FIG. 8, and FIG. 13 is a diagram illustrating the operation of the medical device of FIG. In addition, the lower side of FIG. 8 will be described as “distal end”, the upper side will be described as “proximal end”, the left side of FIGS.

The configuration of the medical needle 50 of the present invention is as follows.
7 is formed so as to be bent in the middle, and a storage section side engaging section 171a provided on the other end side of the storage section 17
The medical needle 1 is the same as the medical needle 1 described above, except that the medical device 40 includes a medical container-side engaging portion 41 provided on the medical device 40 that removably engages with the housing portion-side engaging portion 171a. Hereinafter, the differences will be mainly described. In addition, the medical device 20
The medical device includes a medical device 40 and a medical needle 50 attached thereto.

As shown in FIG. 8, the medical needle 50 includes the hollow needle 3, the hub 4 fixed to the proximal end of the hollow needle 3, and the hollow needle protector 15. The hollow needle protector 15 is
It comprises a main body 6, a housing 17, and an urging means 8. The medical device 20 includes the hollow needle 3 and the hollow needle protector 15 having the hub 4 inside the main body 6 as described above. The hollow needle protector 15 includes the main body 6 and the housing 1.
7 and urging means 8. In addition, the above-mentioned thing is used as the main body part 6, the urging means 8, and the storage part 17.

The storage section 17 is formed in substantially the same shape as the storage section 7, and is formed on the hollow needle 3 side of the storage section 17 like the storage section 7, and stores the hollow needle 3 from its side. And a first end 171 that is formed so as to be branched into two branches and is rotatably connected to the distal end portion 61 of the main body 6. As shown in FIG. 8, the connection between the one end portion 171 and the distal end portion 61 is made by a concave portion 174 provided on the one end portion 171 and a convex portion provided on the distal end portion 61, similarly to the medical needle 1. This is performed by fitting with the part 62. As shown in FIG. 8, the storage section 17 includes one end side member 17b, the other end side member 17a, and a hinge portion 176 connecting the both members.
(6 parts). Before and during use of the hollow needle 3, the other end member 17 a is connected to the hinge 17 by a thin hinge 176 formed on the side of the non-groove portion near the center of the storage portion 17.
It is bent toward the proximal end through 6 and is fixed to the medical device 40 connected to the medical needle 50. Therefore, when the medical needle 50 is transported and used as in the storage section 7, the storage section 17 is unlikely to be in the way. The urging means energy holding state maintaining mechanism of the medical needle 50 is the same as that of the medical needle 10 of the above-described embodiment, and the one end member 17 b of the storage part 7 is provided with one side end 175 of the storage part 17. By contact with the tip 81 of the urging means 8, the urging means 8 stands up with respect to the hollow needle 3 and compresses the urging means 8 (the state of holding the energizing energy). Further, the storage portion 17 may be manufactured in three or more stages, and the hinge portion 176 rotatably connects the other end member 17a and the one end member 17b of the storage portion 17 with a pin or the like. May be formed. further,
The medical needle 50 includes a housing-side engaging portion 171a at an end (tip) of the other end-side member 17a of the housing portion 17, and the medical device 40 to be mounted also has a medical device-side engaging portion on the outer periphery. A part 41 is provided, and both are removably engaged. As a result, the other end member 17a does not inadvertently rise, so that the base end 175 of the one end member 17b abuts against the urging means 8 before and during use (the compressed state of the urging means). Is prevented from being inadvertently released, and even if released, the rotation of the storage section 7 due to the extension of the urging means 8 is prevented. The storage section 17 and the medical device 40 may be fixed by different members.

As shown in FIG. 8, a syringe is used as the medical device 40, and the hub 4 of the medical needle 50 is provided at the distal end.
Connected to The medical device 40 is not limited to those described above, and may be a blood bag, an infusion bag, a transfusion set,
It may be an infusion set or the like.

The hollow needle protector 15, like the hollow needle protector 5, has a biasing energy holding state (compressed state) of the biasing means 8 and an urging means energy holding state in which the hollow needle 3 is exposed. It has a state maintaining mechanism and a storage section rotation suppressing mechanism by the urging means 8 in which the energy holding state (compressed state) is released. Further, the maintenance of the state by the urging means energy holding state maintaining mechanism is released by rotating the hollow needle accommodating portion 17, and the urging means 8 after the maintenance state is released by the maintaining mechanism is provided with the hollow needle in the groove 172. The hollow needle storage section 17 can be rotated until 3 is stored.

Specifically, as shown in FIG.
Before and during use, the tip 81 of the urging means 8 abuts the one side end 175 of the storage part 17, so that the storage part 17 stands almost perpendicularly to the hollow needle 3. In this state, the hollow needle 3 is kept exposed. In this state, the other end member 17a is bent toward the base end via the hinge portion 176, and the other end member 17a is bent.
The engaging portion 171a provided at the tip of “a” is engaged with the engaging portion 41 of the medical device 40, and assists the compressed state of the urging means 8.

Then, as shown in FIGS. 12 and 13, after the hollow needle 3 is used, the engagement portion 171a of the storage portion 17 is used.
8 is released from the engagement with the engaging portion 41 of the medical device 40, and FIG.
The storage part 17 which stands substantially perpendicular to the hollow needle 3 shown in FIG.
Of the urging means 8 and the one side end 175 of the storage section 7 by manually pushing down the one end side member 17b toward the front end side.
Is released, the compressed state of the urging means 8 is released, and the rotation of the storage section 17 starts. The rotation proceeds by the extension action of the urging means 8, and firstly, the one end side member 17b
12 and the other end member 17a is continuously rotated to the distal end side via the hinge 176, and finally, as shown in FIG. 17 grooves 17
The hollow needle 3 is stored in 2. In the hollow needle storage state, the urging means 8 is extended, and most of the storage portion 17 and the distal end portion 61 (including the rotating mechanism portion 19) are stored almost closely inside the urging means 8. Have been. As a result, even if the storage section 17 is pushed in the direction in which the hollow needle 3 is exposed, most of the storage section 17 including the rotating mechanism portion 19 is biased by the biasing means 8.
The rotation of the storage section 17 is suppressed because it comes into contact with the inner surface of the storage section 17.
Further, since the outer diameter of the distal-side enlarged portion 173 is made larger than the inner diameter of the urging means 8, the urging means 8 does not come off to the distal end side. In the embodiment, the biasing means 8 suppresses the rotation of the storage unit 17 by storing the majority of the storage unit 17 and the majority of the rotation mechanism unit 19, but is not limited thereto. The rotation of the storage unit can be suppressed by enclosing a part of the urging unit with a part of the rotation mechanism with respect to the main body of the storage unit or a part of the storage unit that stores the hollow needle.

Next, another embodiment of the medical needle of the present invention will be described. FIG. 14 is an external view of another embodiment of the medical device provided with the medical needle of the present invention, FIG. 15 is a front view of the medical device of FIG. 14, and FIG. 16 is a part of the medical needle portion of FIG. It is an enlarged view. In the configuration of the medical needle 90 of the present invention, the urging means energy holding state maintaining mechanism is not constituted by the storage section 27 and the main body section 6. Engagement with the storage device side engagement portion 271a provided on the end portion and the medical device side engagement portion 41 provided on the medical device 40 removably engaged with the storage portion side engagement portion 271a. Except for the configuration, it is the same as the medical needle 10 described above. Hereinafter, the differences will be mainly described.

The medical device 80 comprises a medical device 40 and a medical needle 90. As shown in FIGS. 14 to 16, the medical needle 90 includes the hollow needle 3, the hub 4 attached to the proximal end of the hollow needle 3, and the hollow needle protector 25. The main body 6, the storage section 27, and the urging means 8
Consists of As the main body 6, the urging means 8, and the medical device 40, those described above are used.

The storage portion 27 is formed on the hollow needle 3 side similarly to the storage portion 17, and has a groove 272 for storing the hollow needle 3 from the side surface thereof, and is branched into two.
An end 271 rotatably connected to the distal end portion 61 of the main body 6 is provided. The connection between the one end 271 and the distal end portion 61 of the main body 6 is performed by the concave portion 2 provided in the base end 271 similarly to the medical needle 1 as shown in FIG.
This is performed by fitting a projection 74 provided on the distal end portion 61 with the projection 74. As shown in FIG. 16, one end 275 of one side 271 of the storage portion 27 is
1, but the tip of one side end 275 is configured not to abut. Specifically, the side surface of the base end of the storage section is a curved surface without an edge. In this embodiment, it is formed in a semicircular shape as shown in FIG.
The storage section 27 includes, similarly to the storage section 17, one end-side member 27b, the other end-side member 27a, and a hinge portion 276 connecting the both members, and in the middle (near the center, the hinge portion 276).
It is manufactured so that it may bend. For this reason,
Like the medical needle 7, when the medical needle 90 is transported and used, the storage portion 27 is unlikely to be in the way. Before and during use of the hollow needle 3, the other end side member 27a is bent toward the base end via the hinge portion 276, and the medical needle 9
The medical device 40 is fixed to the medical device 40 connected to the device 0. The other end member 27a is fixed to the medical device 40 by the other end member 27a.
This is performed by removably engaging the housing-side engaging portion 271a formed at the end of the medical device 40 and the medical device-side engaging portion 41 provided on the outer periphery of the medical device 40. In this state, the one end-side member 27b stands substantially perpendicularly to the hollow needle 3, and comes into contact with the distal end 81 of the biasing means 8 at the non-tip side of the one side end 275, thereby urging the urging means. 8 is held in a compressed state (energized energy holding state).

Like the hollow needle protector 5, the hollow needle protector 25 has an urging means energy holding state maintaining mechanism for holding the urging energy holding state of the urging means 8 and the state where the hollow needle 3 is exposed. . The holding state maintenance mechanism of the present invention,
Unlike the medical needle 10 and the medical needle 110, the storage unit and the main body do not include the storage unit and the storage unit-side engagement unit 271a.
The medical device 40 is configured to be engaged with a medical device engaging portion 41 provided on the medical device 40 so as to be detachable.

More specifically, as shown in FIG. 14, before and during use of the hollow needle 3, a housing-side engaging portion 271a provided at the distal end of the other end-side member 27a, The medical device side engaging portion 41 provided on the outer periphery of the side is detachably engaged with the medical device side engaging portion 41, whereby the one end side member 27b of the storage portion 27 is in a state of standing almost perpendicularly to the hollow needle 3, and the hollow The exposed state of the needle 3 is maintained. In this state, the other end side member 27a is bent to the base end side via the hinge portion 276 as described above, and does not accidentally get up.

Similarly to the hollow needle protector 5, the hollow needle protector 25 has a storage unit rotation suppressing mechanism by the urging means 8 whose energy holding state (compressed state) is released. The state maintenance by the urging means energy holding state maintaining mechanism is released by rotating the hollow needle storage section 27, and the urging means 8 after the maintenance state is released by the maintenance mechanism.
Is the hollow needle storage part 2 until the hollow needle is stored in the groove 272.
7 can be rotated. Specifically, after the hollow needle 3 is used, the storage unit side engaging portion 271a and the medical device side engaging portion 4
By releasing the engagement with 1, the compressed state of the urging means 8 is released and the rotation starts automatically. The rotation proceeds by the extension action of the urging means 8, and, similarly to the storage section 17, firstly, the one end side member 27 b rotates, and continuously, the other end side member 27 a moves to the front end via the hinge portion 276. By pivoting to the side, the groove 27
The hollow needle 3 is stored in 2. In a state where the hollow needle 3 is stored, the urging means 8 is extended, and most of the storage portion 27 and the distal end portion 61 (including the rotation mechanism portion 29) are almost in close contact with the inside of the urging means 8. It is stored. Further, since the outer diameter of the distal-side enlarged portion 273 is made larger than the inner diameter of the urging means 8, the urging means 8 does not come off to the distal end side. In the embodiment, the biasing unit 8 suppresses the rotation of the storage unit 27 by storing the majority of the storage unit 27 and the majority of the rotation mechanism unit 29, but is not limited thereto. The rotation of the storage unit can be suppressed by enclosing a part of the urging unit with a part of the rotation mechanism with respect to the main body of the storage unit or a part of the storage unit that stores the hollow needle.

The invention for attaining the object of the present invention is a medical needle comprising a hollow needle, a hub fixed to the proximal end of the hollow needle, and a hollow needle protection portion for protecting the hollow needle. The hollow needle protection portion includes a main body attached to the hub or a medical device attached to the hub or integrally formed with the hub or a medical device attached to the hub, and one end attached to the main body. A hollow needle storage part, which is rotatably mounted, and has a groove for storing the hollow needle after use, and retains the biasing energy and holds the hollow needle until the hollow needle is stored in the groove. Biasing means capable of biasing the hollow needle storage section, wherein the hollow needle protection section maintains a biasing energy holding state for holding the biasing energy holding state of the biasing means and the exposed state of the hollow needle. Equipped with a mechanism .

The invention for attaining the object of the present invention is a medical needle comprising a hollow needle, a hub fixed to a base end of the hollow needle, and a hollow needle protection portion for protecting the hollow needle. The hollow needle protection portion includes a main body attached to the hub or a medical device attached to the hub or integrally formed with the hub or a medical device attached to the hub, and one end attached to the main body. A hollow needle storage part, which is rotatably mounted and has a groove for storing the hollow needle after use, and a bias for holding the biasing energy and biasing the hollow needle storage part And the hollow needle protection section includes a biasing means energy holding state maintaining mechanism for holding the biasing energy holding state of the biasing means and the exposed state of the hollow needle, wherein the biasing means energy holding state is provided. Wei The maintenance of the state by the mechanism is released by rotating the hollow needle storage section, and the urging means after the release of the maintenance state by the maintenance mechanism releases the hollow needle until the hollow needle is stored in the groove. The storage section is rotatable.

[0039]

According to the present invention, there is provided a medical needle comprising a hollow needle, a hub fixed to the base end of the hollow needle, and a hollow needle protection portion for protecting the hollow needle. The hollow needle protection portion is attached to the hub or a medical device attached to the hub, or is formed integrally with the hub or a medical device attached to the hub, and one end portion of the main body portion rotates. A hollow needle storage part which is attached so as to be capable of storing the hollow needle after use, and a groove part for storing the hollow needle after use;
Biasing means for retaining biasing energy and biasing the hollow needle storage section, wherein the hollow needle protection section includes
An urging means energy holding state maintaining mechanism for holding the urging energy holding state of the urging means and the exposed state of the hollow needle is provided. For this reason, the medical needle of the present invention can start storing the hollow needle without applying a large force.

[Brief description of the drawings]

FIG. 1 is an external view of one embodiment of a medical device provided with a medical needle of the present invention.

FIG. 2 is a front view of the medical device of FIG. 1;

FIG. 3 is a partially enlarged view of the medical needle part of FIG. 1;

FIG. 4 is a partially enlarged view of the medical needle part of FIG. 1;

FIG. 5 is a partially enlarged view of the medical needle part of FIG. 2;

FIG. 6 is an explanatory diagram of an operation of the medical device of FIG. 1;

FIG. 7 is an explanatory diagram of the operation of the medical device of FIG. 1;

FIG. 8 is an external view of another embodiment of the medical device provided with the medical needle of the present invention.

FIG. 9 is a front view of the medical device of FIG. 8;

FIG. 10 is a partially enlarged view of an engagement portion between a storage section used in the medical device of FIG. 8 and the medical device.

FIG. 11 is a partially enlarged view of the medical device of FIG. 8;

FIG. 12 is an explanatory diagram of the operation of the medical device in FIG. 8;

FIG. 13 is an explanatory diagram of the operation of the medical device in FIG. 8;

FIG. 14 is an external view of another embodiment of the medical device of the present invention.

FIG. 15 is a front view of the medical device of FIG. 14;

FIG. 16 is a partially enlarged view of the medical needle part of FIG. 14;

FIG. 17 is an external view of another embodiment of the medical device provided with the medical needle of the present invention.

FIG. 18 is an explanatory diagram of the medical needle part of FIG. 17;

FIG. 19 is an explanatory diagram of the operation of the medical device in FIG. 17;

[Explanation of symbols]

 10, 50, 90, 110, 130 Medical needle 3 Hollow needle 4, 104 Hub 5, 15, 25, 125 Hollow needle protector 6, 106 Main body 7, 17, 27 Housing 8, 82 Urging means 30, 40 Medical devices 1,20,80,100,120 Medical devices

Claims (13)

[Claims] 1. A medical needle comprising a hollow needle, a hub fixed to a proximal end of the hollow needle, and a hollow needle protection part for protecting the hollow needle, wherein the hollow needle protection part is provided. A main body attached to the hub or a medical device attached to the hub or integrally formed with the hub or a medical device attached to the hub, and one end rotatably attached to the main body. And a hollow needle storage section having a groove for storing the hollow needle after use, and a biasing means for holding biasing energy and biasing the hollow needle storage section, The medical needle is characterized in that the protection section includes a biasing means energy holding state maintaining mechanism for holding the biasing energy holding state of the biasing means and the exposed state of the hollow needle. 2. The state maintenance of the medical needle by the urging means energy holding state maintaining mechanism is released by rotating the hollow needle storage part, and the state after the maintenance state is released by the maintenance mechanism. The medical needle according to claim 1, wherein the urging means is capable of rotating the hollow needle storage section until the hollow needle is stored in the groove. 3. The hollow needle protection part is a part of the urging means whose energy holding state is released in a state where the hollow needle is stored in a groove of the storage part by rotating the storage part. 3. The storage unit according to claim 1, wherein the storage unit includes a rotation mechanism portion of the storage unit with respect to the main body unit or a storage unit rotation suppression mechanism by enclosing a part of the storage unit storing the hollow needle. The medical needle as described. 4. The device according to claim 1, wherein the biasing means is formed of a coil spring, a bellows tube, or two ring-shaped members and a linear or plate-shaped elastic body connecting the ring-shaped members.
4. The medical needle according to any one of claims 1 to 3. 5. The rotating mechanism portion includes the coil spring,
The medical needle according to any one of claims 1 to 4, wherein the medical needle is made smaller than the inner diameter of the bellows tube or the two ring-shaped members. 6. The medical device according to claim 1, wherein the storage section is rotatable in a direction coaxial with the hollow needle from a state crossing the hollow needle. needle. 7. The medical needle according to claim 1, wherein the storage portion is formed so as to be bent in a plurality of steps. 8. The urging means energy holding state maintaining mechanism is constituted by one side end of the storage section and the main body section in a state intersecting with the hollow needle. 8. The device according to claim 1, wherein one end of the urging means abuts on one side end of the storage portion in a non-extendable state, and the other end abuts on the main body in an unextendable state. 9. Medical needle. 9. The medical needle according to claim 1, wherein the one end of the storage section and the main body are fitted with the hollow needle stored therein. 10. The medical needle according to claim 1, wherein said hollow needle protector has a biasing energy of biasing means by said main body portion and said hollow needle storage portion. And a state in which the energy holding state of the biasing means is automatically released by manually starting the initial rotation of the hollow needle storage section in the energy holding state of the biasing means. And, the hollow needle storage section is automatically rotated by the extension action of the biasing means released from the energy holding state, and the hollow needle is stored in the groove of the hollow needle storage section,
The energy holding state is released and a part of the extended urging means encloses a part of a rotating mechanism part of the storage part with respect to the main body part or a part of a storage part storing the hollow needle, thereby forming the hollow part. A medical needle for suppressing rotation of a needle storage part. 11. A medical device comprising: a medical device; and the medical needle according to claim 1 mounted on the medical device. 12. The mechanism for maintaining an energy holding state of the urging means, the storage unit side engaging portion provided on the other end side of the storage unit, and releasably engages with the storage unit side engaging portion. The medical device according to claim 11, comprising a medical device-side engaging portion provided on the medical device. 13. The medical device according to claim 11, wherein the storage section is formed so as to bend in the middle.