Winged needle

Abstract

To provide a winged needle having a safety mechanism which does not obstruct puncture of the winged needle into a living body, or a winged needle having a safety mechanism which allows the winged needle to be operated without contact with a needle after use.SOLUTION: A winged needle 10 comprises: a hub body 11; wings 14 projecting from the lateral faces of the hub body 11 toward both sides; a needle 16 projecting from the hub body 11 in a direction orthogonal to the projecting direction of the wings 14; and a needle cover 19 which is fixed to a fixation shaft in such a manner of being rotatable with respect to the hub body 11 and is capable of housing the needle 16. The needle cover 19 extends from the fixation shaft and can be housed in the hub body 11. The needle cover 19 comprises: a needle housing part 21 extending from the fixation shaft; and an operation unit 20 extending from the fixation shaft toward the opposite side of the needle housing part 21.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a winged needle having a safety mechanism.

Background Art

[0002] Conventionally, when injecting a patient with a chemical solution or the like, a winged needle in which a pair of wings protrude from the hub at the proximal end of the needle has been widely used. When indwelling the winged needle in a living body, the winged needle is fixed by attaching the wings to the skin with an adhesive tape or the like.

[0003] When disposing of the used winged needle, it is necessary to cover the needle tip in order to prevent an operator or the like from accidentally pricking a finger or the like with the needle tip. Patent Document 1 describes a Hoover needle assembly (winged needle) provided with a safety catching device (safety mechanism).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the winged needle described in Patent Document 1, since the safety catching device is exposed, it gets in the way when puncturing the living body with the winged needle. When indwelling the winged needle in a living body, since the safety catching device touches the skin, it is rubbed and uncomfortable, and there is a risk of damaging the skin.

[0006] When discarding the winged needle, when storing the needle tip in the catching hood, it is necessary to hold the catching hood on the needle tip side, and there is a risk of accidentally pricking a finger with the needle tip. In addition, since the catching hood does not cover the entire needle, there is also a risk of touching body fluids or the like attached to the needle.

[0007] An object of the present disclosure is to provide a winged needle having a safety mechanism that does not get in the way when puncturing a living body with the winged needle.

[0008] Another object of this disclosure is to provide a winged needle having a safety mechanism that allows the winged needle to be operated without touching the needle after use. [Means for solving the problem]

[0009] The winged needle according to this disclosure comprises a hub body, wing portions extending from the side surface of the hub body on both sides, a needle protruding from the hub body in a direction substantially perpendicular to the direction in which the wing portions extend, and a needle cover portion rotatably fixed to a fixed shaft in the hub body and capable of housing the needle, wherein the needle cover portion extends from the fixed shaft and can be housed in the hub body.

[0010] With the above configuration, the needle cover is housed in the hub body, so it does not get in the way when inserting the winged needle or when attaching it to a living organism.

[0011] The winged needle according to this disclosure comprises a hub body, wing portions extending outwards from the side surface of the hub body, a needle protruding from the hub body in a direction substantially perpendicular to the direction in which the wing portions extend, and a needle cover portion rotatably fixed to a fixed shaft on the hub body and capable of housing the needle, wherein the needle cover portion has a needle housing portion extending from the fixed shaft and an operating portion extending from the fixed shaft to the opposite side of the needle housing portion.

[0012] With the above configuration, in the operation of housing the winged needle in the needle cover, the needle cover can be removed from the cavity without touching the needle or the needle housing near the needle, using the operating part on the opposite side of the needle housing, and the needle can be housed there.

[0013] The needle cover portion of a winged needle in one aspect of this disclosure may have a needle locking mechanism for securing the needle in a housed state.

[0014] With the above configuration, the needle is locked in place by the needle cover, preventing the needle cover from easily coming off and thus preventing injuries to fingers or other body parts from the needle.

[0015] In one aspect of the present disclosure, the side surface of the winged needle may have a first needle cover locking mechanism that engages with the needle cover portion in a state where the needle cover portion houses the needle.

[0016] According to the above configuration, since the needle cover portion housing the needle is not easily movable, when discarding the winged needle, it is possible to prevent accidents and injuries caused by the needle.

[0017] In one aspect of the present disclosure, the operating portion of the winged needle may have a width larger than the width of the needle housing portion.

[0018] According to the above configuration, the operation of rotating the needle cover portion from the initial state by the operating portion becomes easier.

[0019] In one aspect of the present disclosure, the operating portion of the winged needle may have an inclined portion that is inclined in the direction opposite to the direction in which the needle protrudes with respect to the surface in the direction in which the wing portion protrudes.

[0020] According to the above configuration, by having the inclination, the operating portion is easily engaged with the finger, and the operation of pulling up the operating portion upward and rotating the needle cover portion about the rotation axis hole to lock the needle becomes easier.

[0021] In one aspect of the present disclosure, the hub main body portion of the winged needle may have a second needle cover locking mechanism that engages with the needle cover portion in a state where the needle cover portion is housed.

[0022] According to the above configuration, in the initial state, the needle cover portion is not easily detached, and it is possible to prevent the needle cover portion from accidentally locking the needle and making the winged needle unusable.

Effect of the Invention

[0023] The winged needle according to the present disclosure has a safety mechanism that does not interfere when piercing the living body, or has a safety mechanism that can be operated without touching the needle after use.

Brief Description of the Drawings

[0024] [Figure 1] It is a schematic diagram of the winged needle in a state where the needle cover portion of the embodiment is housed in the hub main body portion. (a) is a perspective view from the front right obliquely, and (b) is a perspective view from the rear right obliquely. [Figure 2] It is a schematic diagram of the winged needle in a state where the needle is accommodated in the needle cover portion of the embodiment. [Figure 3] It is an exploded view of a part of the winged needle of the embodiment. [Figure 4] It is an exploded view of a part of the winged needle of the embodiment and is a perspective view from the lower right obliquely. [Figure 5] It is a right side view of the winged needle of another embodiment.

Mode for Carrying Out the Invention

[0025] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the following description, specific shapes, materials, directions, numerical values, etc. are examples for facilitating the understanding of the present disclosure and can be appropriately changed according to applications, purposes, specifications, etc. Also, selectively combining the constituent elements of the embodiments and modification examples described below is assumed from the beginning.

[0026] In the following description, the directions of up and down, front and back, left and right are only used for convenience in the description and are not intended to define the direction of the winged needle according to the embodiment.

[0027] <The First Embodiment> Referring to FIGS. 1 and 2, the winged needle 10 of the present embodiment will be described. FIG. 1 is a schematic diagram of the winged needle 10 of the present embodiment in a state where the needle cover portion 19 is housed in the hub main body portion 11. FIG. 1(a) is a perspective view from the front right obliquely, and FIG. 1(b) is a perspective view from the rear right obliquely. FIG. 2 is a perspective view from the front right obliquely of the winged needle 10 in a state where the needle 16 is accommodated in the needle cover portion 19.

[0028] The winged needle 10 comprises a hub body 11, wing portions 14 extending to the left and right from the sides of the hub body 11, a needle 16 protruding from the hub body 11 in a direction perpendicular to the direction in which the wing portions 14 extend, and a needle cover portion 19 capable of housing the needle 16. Figure 1 shows the winged needle 10 with the needle cover portion 19 housed in the hub body 11. Figure 2 shows the winged needle 10 with the needle 16 housed in the needle cover portion 19.

[0029] The hub body 11 has side portions 12a that extend downward on both the left and right sides. The side portions 12a are longer in the front-rear direction than the hub body 11, and the space between the side portions 12a behind the hub body 11 is closed by the upper portion 12b. The space between the upper portion 12b and the left and right side portions 12a is hollow, forming a cavity 13. The cavity 13 is formed to accommodate a needle housing portion 21, which is part of the needle cover portion 19 described later. The hub body 11 and the side portions 12a are formed integrally.

[0030] The hub body 11 is the part that is gripped when handling the winged needle 10. When gripping the winged needle 10, the hub body 11 and the side portion 12a are gripped, and the side portion 12a is tall enough to be gripped with the fingertips. The needle 16 is used to puncture a living organism by gripping the hub body 11 and the side portion 12a with the fingers and pressing them together with the wing portion 14.

[0031] The hub body 11 has a fixing shaft hole 17 for fixing the needle cover 19. The winged needle 10 shown in Figure 1 has the fixing shaft hole 17 on the side portion 12a. As will be described later, the projection 24 of the needle cover 19 fits into the fixing shaft hole 17, and the needle cover 19 is held so as to be rotatable around the fixing shaft hole 17.

[0032] The hub body 11 has a cylindrical section (not shown) between the upper part and the side part 12a. The cylindrical section extends in the front-rear direction and is hollow towards the rear. The rear end of the cylindrical section is connected to a tube connection hole 15. A needle 16 is connected to the lower part of the front side of the cylindrical section, and the needle 16 is in communication with the cylindrical section. When using the winged needle 10, a tube (not shown) is connected to the tube connection hole 15, and the drug solution is injected into the body through the needle 16 via the cylindrical section.

[0033] In the winged needle 10 of this embodiment, the upper part of the hub body 11 is formed in a semi-cylindrical shape. The shape of the hub body 11 is not limited to a semi-cylindrical shape, but since the winged needle 10 is attached to the skin with adhesive tape or the like when it is inserted into a living body, it is preferable for the upper part to be curved. It is also a shape that is easy to hold when inserting the needle.

[0034] The wing portion 14 has a shape that extends to the left and right from the lower end of the side portion 12a. The width of the forward extension of the wing portion 14 is larger than the width of the rear extension. This is because it is the part that the fingertips touch when gripping the hub body portion 11. The large width of the forward part of the wing portion 14 allows the wing portion 14 to be pressed with the fingers when puncturing, making it easier to puncture.

[0035] The wing portion 14 is formed to spread out in a planar shape in the front, back, left, and right directions. This shape is convenient for attaching the winged needle 10 to the body with adhesive tape or the like when implanting it in a living body. Furthermore, the wing portion 14 has a planar shape with no irregularities. This is because the wing portion 14 will come into contact with the skin while the winged needle 10 is implanted in a living body, and will not cause discomfort. In addition, the edges of the wing portion 14 are rounded. This is to prevent discomfort when it comes into contact with the skin. However, the shape of the wing portion 14 is not limited to a planar shape. The wing portion 14 may be configured to be advantageous when gripping ribs or other parts, taking operability into consideration.

[0036] The hub body 11, the side portion 12a, and the wing portion 14 are integrally molded from a resin material. For example, they are made of polyvinyl chloride, but are not limited to this. The wing portion 14 may also be made of a different material; for example, the wing portion 14 may be made of a material that is softer than the hub body 11 and the side portion 12a.

[0037] The needle 16 protrudes downward from the front tip of the hub body 11. The needle 16 is made of a metal material such as stainless steel. The needle 16 is a hollow tube with its tip cut at an angle, and the other end is connected to the tube portion of the hub body 11 and communicates with the tube connection hole 15. The needle 16 has the role of injecting the drug solution or the like into the body through the tube connection hole 15. The length of the needle 16 is, for example, about 10 mm, but it can be of various lengths depending on the application of the winged needle 10.

[0038] The needle cover portion 19 is a safety mechanism for the winged needle 10 in this embodiment. As shown in Figure 1, the needle cover portion 19 is shaped so that a part of it can be housed in the cavity portion 13 of the hub body portion 11. The needle cover portion 19 is formed of a resin material such as polypropylene.

[0039] The needle cover portion 19 is fixed to a fixed shaft hole 17 provided in the hub body portion 11 and is rotatable around the fixed shaft hole 17.

[0040] In the initial state (unused state) shown in Figure 1, the needle cover section 19 has a rearward-located needle housing section 21 (see Figure 3) housed within the hub body section 11. The needle cover section 19 has an operating section 20 at the front in the initial state. The operating section 20 allows the needle cover section 19 to rotate around the fixed shaft hole 17. The length of the needle housing section 21 is formed to be slightly longer than the length of the needle 16 so that the entire needle 16 can be accommodated.

[0041] The operating section 20 extends in the opposite direction from the direction in which the needle housing section 21 of the needle cover section 19 extends from the fixed shaft hole 17. In the initial state, the operating section 20 protrudes forward of the wing section 14. Furthermore, the operating section 20 has a width greater than the width of the needle housing section 21 in the left-right direction. Because the operating section 20 protrudes forward of the wing section 14 and is wider than the width of the needle housing section 21, it is easy to rotate the needle cover section 19 from its initial state and house the needle 16.

[0042] In this embodiment, the operating part 20 of the winged needle 10 is formed in a substantially circular shape as shown in Figure 1, but it is not limited to a circular shape and may be polygonal as long as it facilitates the operation of the needle cover part 19. On the other hand, a rounded shape is preferable in order to avoid discomfort when the operating part 20 is handled by the finger.

[0043] The needle housing portion 21 of the needle cover portion 19 is composed of two side plate portions 25 that are narrower than the spacing between the side portions 12a and an upper plate portion 26 formed to close the space between the side plate portions 25. A needle locking mechanism 22, which will be described later, is provided between the side plate portions 25.

[0044] <Needle locking mechanism> Next, with reference to Figure 2, the needle locking mechanism 22 of the winged needle 10 of this embodiment will be described. The winged needle 10 of this embodiment has a needle locking mechanism 22 that locks the needle 16 in the needle cover portion 19 while it is housed there. By rotating the needle cover portion 19 from the state in Figure 1 to the state in Figure 2, the needle 16 is housed behind the needle locking mechanism 22. The needle 16 is housed so as not to be directly touched by the needle housing portion 21 and the needle locking mechanism 22.

[0045] The needle locking mechanism 22 consists of an L-shaped needle stopper 22a extending inward from the side plate portion 25 of the needle housing portion 21. The needle locking mechanism 22 shown in Figure 2 consists of two needle stoppers 22a, but the number of needle stoppers 22a is not limited to two. There may be one, three, or more.

[0046] In the example shown in Figure 2, one needle stopper 22a is connected to the left side of the needle housing 21, and the other needle stopper 22a is connected to the right side of the needle housing 21. However, the configuration is not limited to alternate connections to the left and right side plates 25 of the needle housing 21; for example, multiple needle stoppers 22a may be connected to only one side plate 25.

[0047] As the needle cover portion 19 rotates around the fixed shaft hole 17 and moves from a state where it is housed in the cavity portion 13 to the upright position shown in Figure 2, the L-shaped needle stopper portion 22a is pressed and deformed by the needle 16, and as it accommodates the needle 16, it returns to its original shape and locks the needle 16 in place (the state shown in Figure 2).

[0048] In this embodiment, the winged needle 10 houses the needle 16 along its entire length in the needle housing section 21 of the needle cover section 19, so there is no direct contact with the needle 16. Therefore, even if bodily fluids or other substances are attached to the needle 16, there is no contact with fingers or other body parts, thus providing an infection-suppressing effect.

[0049] <First needle cover locking mechanism> Next, with reference to Figure 2, the needle cover locking mechanism 23 of the needle cover portion 19 will be described. The winged needle 10 of this embodiment has a needle cover locking mechanism 23 that fixes the needle cover portion 19 to the hub body portion 11 when the needle 16 shown in Figure 2 is housed inside.

[0050] After use for puncture, the winged needle 10 is discarded with the needle 16 still attached. The needle cover locking mechanism 23 prevents the needle cover portion 19 containing the needle 16 from easily moving, thus preventing the needle 16 from pricking fingers or other body parts when discarding the winged needle 10.

[0051] The needle cover locking mechanism 23 of this embodiment has a claw at the front end of the side portion 12a and a recess in the corresponding portion of the needle housing 21. As shown in Figure 2, when the needle 16 is housed in the needle cover 19, the claw on the side portion 12a engages with the recess in the needle housing 21, locking the needle cover 19 so that it does not move easily.

[0052] <Rotation mechanism> Next, the rotation mechanism of the winged needle 10 in this embodiment will be described with reference to Figures 3 and 4. Figure 3 is a partially exploded view of the winged needle 10, and shows the hub body 11, needle 16, and needle cover 19 disassembled. Figure 4 is a view of Figure 3 from below.

[0053] As already mentioned, a fixed shaft hole 17 is provided in the side portion 12a. A projection 24 is provided in the side plate portion 25 of the needle housing portion 21 at a corresponding position when housed in the cavity portion 13, and the projection 24 fits into the fixed shaft hole 17, thereby holding it so as to be rotatable around the fixed shaft hole 17.

[0054] As shown in Figure 4, a groove 27 is provided on the inner lower end of the side portion 12a, extending upward, and the fixed shaft hole 17 is positioned at the upper end of the groove 27. The spacing between the grooves 27 on both side portions 12a is the same as or slightly larger than the spacing between the two protrusions 24 of the needle cover portion 19 at the lower end of the side portion 12a. Furthermore, the spacing between the grooves 27 is formed to narrow slightly as it extends upward, so that the groove 27 almost disappears at the position of the fixed shaft hole 17.

[0055] When attaching the needle cover portion 19, the projections 24 of the needle cover portion 19 are pushed along the grooves 27 toward the fixed shaft hole 17. Although the spacing between the projections 24 becomes narrower than the spacing between the grooves 27, the side portions 12a deform elastically to spread out to the left and right, allowing the projections 24 to be pushed to the position of the fixed shaft hole 17. By inserting the needle cover portion 19 into the cavity portion 13 until the projections 24 fit into the fixed shaft hole 17, the needle cover portion 19 is held so as to be rotatable around the fixed shaft hole 17.

[0056] <Variation> Figure 5 shows another embodiment of the present disclosure. The difference from the first embodiment is that the operating section 20 has an inclined section 28 that slopes from the protruding surface of the wing section 14 (a surface parallel to the front-rear and left-right directions, referred to as the horizontal plane in this disclosure) to the opposite side of the direction in which the needle 16 protrudes.

[0057] In the winged needle 10 shown in Figure 5, the operating part 20 is inclined upward by an angle θ from the horizontal plane. The inclined part 28 makes it easier to grip the operating part 20 with a finger, and makes it easier to pull the operating part 20 upward and rotate the needle cover part 19 around the fixed shaft hole 17 to lock the needle 16.

[0058] The angle θ is formed to be only slightly inclined. This is because, when the winged needle 10 is placed in a living body and fixed in place with adhesive tape, if the operating part 20 is significantly inclined upward from the horizontal plane, it will be far enough away from the skin surface of the living body that it may snag on fingers, clothing, tubes, etc. A value of angle θ of, for example, 5 to 10 degrees is preferable. Within this range, when the winged needle 10 is placed in a living body, it will not snag on fingers, clothing, tubes, etc.

[0059] <Second needle cover locking mechanism> Furthermore, the winged needle 10 may have a second needle cover locking mechanism to prevent the needle cover portion 19 from moving easily in its initial state. By having a second needle cover locking mechanism, it is possible to prevent the needle cover portion 19 from accidentally locking the needle 16, which would render the winged needle 10 unusable.

[0060] A second needle cover locking mechanism can be formed by locking the needle cover 19 in the cavity 13 formed inside the side portion 12a while the needle cover 19 is housed there. For example, it can be formed using a structure similar to that of the first needle cover locking mechanism 23. That is, a claw can be formed on the inside of the lower end of the side portion 12a, and a groove can be formed in the corresponding side plate portion 25 of the needle cover 19, so that the claw and groove engage when the needle cover 19 is housed in the cavity 13, thereby forming the second needle cover locking mechanism. However, the configuration of the locking mechanism is not limited to this.

[0061] It should be noted that the present invention is not limited to the embodiments and their modifications described above, and various changes and improvements are possible within the scope of the claims of this application. [Explanation of Symbols]

[0062] 10 Winged needle, 11 Hub body, 12a Side section, 12b Top section, 13 Hollow section, 14 Wing section, 15 Tube connection hole, 16 Needle, 17 Fixed shaft hole, 18 Safety mechanism, 19 Needle cover section, 20 Operating section, 21 Needle housing section, 22 Needle locking mechanism, 22a Needle stopper section, 23 Needle cover locking mechanism, 24 Projection, 25 Side plate section, 26 Top plate section, 27 Groove, 28 Inclined section

Claims

1. The hub body and The wing portions extend from the sides of the hub body, A needle protruding from the hub body in a direction perpendicular to the direction in which the wing portion extends, The hub body is rotatably fixed to a fixed shaft and comprises a needle cover portion capable of housing the needle, A winged needle equipped with, The hub body is provided with a cavity capable of housing the needle cover portion extending from the fixed shaft. The needle cover portion is formed such that, when housed within the cavity of the hub body portion, the lower surface of the needle cover portion does not protrude downward from the lower surface of the wing portion. Winged needle.

2. The hub body and The wing portions extend from the sides of the hub body, A needle protruding from the hub body in a direction perpendicular to the direction in which the wing portion extends, The hub body is rotatably fixed to a fixed shaft and comprises a needle cover portion capable of housing the needle, A winged needle equipped with, The aforementioned needle cover portion is A needle housing portion extending from the aforementioned fixed shaft, It has an operating section that extends from the fixed shaft to the opposite side of the needle housing section, Winged needle.

3. The needle cover portion has a needle locking mechanism for fixing the needle in place while the needle is housed inside. A winged needle according to claim 1 or 2.

4. The aforementioned side surface has a first needle cover locking mechanism that engages with the needle cover portion when the needle cover portion is housed in it. A winged needle according to any one of claims 1 to 3.

5. The operating section has a width greater than the width of the needle housing section. The winged needle according to claim 2.

6. The operating section has an inclined portion that slopes in the opposite direction to the direction in which the needle protrudes, with respect to the surface in which the wing portion extends. The winged needle according to claim 2 or 5.

7. The hub body has a second needle cover locking mechanism that engages with the needle cover when the needle cover is housed in it. A winged needle according to any one of claims 1 to 6.

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