JPH0966106A - Fixed-wing injection needle with a needle cover - Google Patents

Abstract

(57) [Summary] [Object] The present invention prevents contact with blood of a patient, which may be erroneously punctured or contaminated before and after use of an injection needle, when detaching a needle cover. [Composition] A sheet-shaped needle cover made of a flexible material, which covers the injection needle before the injection needle is used, and the needle cover is divided into two wings when the injection needle is used. Exposed, and further rotating the wing about the joint between the needle base and the wing as a rotation center, extending in the lateral direction of the needle base to use as a fixed wing of the injection needle, and further after using the injection needle, An injection needle with a needle cover, characterized in that the wing rotates in the opposite direction to the one used and is rejoined to cover the injection needle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is equipped with a safe needle cover that protects medical personnel from erroneous punctures and infections caused by injection needles for injecting drug solutions, and serves as a fixed wing when puncturing injection needles. Regarding the injection needle.

[0002]

2. Description of the Related Art When performing infusion in a medical institution, in order to prevent the injection needle of the infusion set from falling out of the puncture site even if the patient's body moves, the infusion tube near the needle base of the injection needle and the infusion tube in the vicinity thereof should be prevented. Often fixed with a tape such as a bandage. However, there is a problem that the adhesive strength is weak and the injection needle cannot be firmly held on the body because the area where the tape adheres to the needle base or the tube is small. In order to hold the injection needle more firmly, a winged needle with a wing for fixing is used at the base of the injection needle, and a tape may be attached from above this wing to fix it. It is more expensive than the above, and it is troublesome to use the winged needle because it must be replaced with the injection needle attached to the infusion set.

[0003] At present, the needle cover of the injection needle used in many medical institutions is of a cylindrical shape having a base end portion opened and a tip end portion closed. However, such a shape is used when a medical worker tries to attach and detach the injection needle and the needle cover, that is, when the needle cover is pulled out from the injection needle at the time of use, or after use, for disposal. When the needle is stored in the cover, there is a risk of accidentally puncturing the finger with the needle or contaminating the hand with blood adhering to the tip of the needle.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a simple injection needle having means for fixing, and further, erroneous puncture when detaching the injection needle and the needle cover and ( It is an object of the present invention to provide a safe and easy-to-operate injection needle with a needle cover that can prevent contact with blood (of a patient who may be contaminated).

[0005]

The present inventors provide an injection needle covered with a sheet-like needle cover made of a flexible material, the needle cover being joined to the injection needle at the needle base. Are joined together, and can be divided into approximately two halves in the axial direction of the injection needle, and the joint is formed so that the divided needle cover also functions as a wing for fixing the injection needle. An injection needle with a needle cover, characterized in that rotation preventing means for allowing rotation of a needle cover divided as a rotation center and preventing rotation of a predetermined angle or more is provided on the wing or the injection needle. Solved.

[0006]

When the injection needle is used, the needle cover is divided into approximately two equal parts along the axial direction of the injection needle to expose the injection needle. The needle covers divided into two rotate about the joints, respectively, and extend to the left and right sides of the needle base, and are used as a fixing means of the injection needle, that is, a wing. The wing is a wing (injection needle) by means of a rotation prevention means provided on the needle cover or the injection needle.
It is prevented from rotating in the proper position to fix. After using the injection needle, rotate the divided wing part in the opposite direction to when using,
The needle is covered again by rejoining as in the state before using the needle.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 2 to 4 show a state in which an injection needle is covered with a needle cover before or after the use of the product of the present invention.
Shows the state in which the needle cover is opened to expose the injection needle when the product of the present invention is used. As shown in FIG. 2, the fixed-wing injection needle 1 of the present invention comprises a sheet-shaped needle cover 3 made of a flexible material and an injection needle covered with the needle cover-3.
Are connected to the injection needle at a joint 5 on the needle base 4. The main features of the present invention are the shape, material and structure of the needle cover 3, and the structure of the rotation preventing means 9 and the joint 5. As shown in FIGS. 3 and 4, the needle cover-3 is a thin sheath made of a flexible material.
It is made of vinyl chloride resin, polyethylene, polypropylene, ethylene vinyl acetate copolymer or the like. The overall thickness of the needle cover will be described later,
If the needle base 4 and needle tube 2 can be safely and reliably coated,
It is desirable that the thickness of the needle cover be as thin as possible. Needle cover
3 can be divided into two substantially equal parts in the axial direction of the needle tube 2, and the divided wings 3a and 3b of the needle cover 3 are connected to the joint 5
It is possible to rotate around the needle base 4 with the center of rotation as. As shown in FIGS. 1, 2 and 4, the joint portion 5 is like a rivet and connects the wings 3a and 3b to the needle base 4, but is not fixed but within a predetermined range. It is movable. When using an injection needle, the needle cover-3 can be easily divided by opening it from the tip end side of the needle cover-3. Divided 2
The two blades 3a and 3b cannot rotate indefinitely, and in the present example shown in FIG. 1, the angle formed by both blades 3a and 3b is 0.
It can be rotated within a range of up to 180 °, but further rotation is prevented by the rotation preventing means (blades) 9 provided on the wing or the injection needle. The wing was prevented from rotating at a position suitable for fixing the wing (injection needle), and was extended to both sides of the needle base.
The two wings 3a, 3b are just like the wings of a winged needle,
It is fixed to the patient's body with a tape or bandage. After using the injection needle, the divided wings 3a and 3b rotate in the opposite direction to the use,
Since the needles can be rejoined as in the state before using the injection needle, the needle tube 2 can be safely covered without erroneously puncturing a finger or the like.

The main part of the present invention is as described above, but in using the injection needle 1 of the present invention, it is also important to add the following improvements for convenience. is there.

First, the shape of the needle cover-3 will be described.
First, there is a local change in thickness. To describe the injection needle axial direction, the thickness A of the needle base side covering portion that covers the needle base 4 of the needle cover-3 covers the needle tube 2. It is desirable that the thickness is larger than the thickness B of the needle tube side coating portion. This is because the needle tube side covering part of the needle cover-3 is a part that is to be divided and serves as a fixed part of the wing for fixing, and thus it must be formed as thin as possible so as to be in close contact with the patient's body. Since the needle base side covering portion covers the needle base 4 which is thicker than the needle tube 2, it is inevitably thick. To give specific numerical values, the thickness A of the needle base side coating portion is 4 to 12 mm, and the thickness B of the needle tube side coating portion depends on the thickness (outer diameter) of the needle tube, but it is 1
It is preferably about 2.5 mm. In addition, it is preferable that the above-mentioned change in thickness is continuous rather than intermittent, in terms of fixing and touching the patient's body. Next, from the thickness B in the vicinity of the injection needle axis, that is, in the central portion 6, both side edge portions 1
It is desirable that the thickness C in 1 is smaller. This is because one of the edges (edge) is as thin as possible when the wings are fixed to the body so that they can be adhered to each other without difficulty. As a specific numerical value, it is preferable that the thickness C of both side edge portions 11 is 0.3 to 0.6 mm. Further, it is desirable that the change in thickness between the central portion 6 and the side edge portions 11 is also continuous for the same reason as above.

Next, there is a local change in the width of the needle cover 3, that is, the wings 3a and 3b. In the blade, the width E on the tip (needle tube) side is preferably larger than the width D on the base end (needle base) side. This is because the tip is an important part especially for the fixed part of the wing, and a certain area is required for fixing. On the contrary, even if the base end is large, it does not affect the fixation so much, and rather the wings may be an obstacle when carrying out the procedure with the injection needle, which is wasteful. As a specific numerical value, the width D on the base end (needle base) side of the wings 3a and 3b is 2.5.
It is preferable that the width E is about 4 mm and the width E on the tip (needle tube) side is 7 to 15 mm.

Secondly, the structure of the needle cover-3 will be described.
First, it is convenient to provide a first locking means 7 which can be separated or locked freely at the tip of the needle cover 3, that is, at the tip of the two wings 3a and 3b which are in close contact with each other as shown in FIG. is there. As the first locking means 7, in this embodiment, the blade 3a is provided with a male locking means 7a and the other blade 3b is provided with a female means 7b. The locking means 7 is provided at a position where the tip of the needle tube 2 does not touch when the two wings 3a, 3b are brought together,
When the injection needle is used, it is easy to divide it from the part of the locking means 7, and when the injection needle is covered after use, it can be locked surely and is safe.

Next, it is also effective to provide a slip stopper on one or both surfaces of the needle cover-3. If the wings are provided with slips such as linear projections and grooves, the injection needle can be easily and surely fixed to the body. When the needle cover 3 is not used as the fixed wing, the wing is separated from the part of the separating means 8 which is provided in the vicinity of the joint portion 5 of the wings 3a and 3b and includes a notch, and is used only as an injection needle. It is also possible.

Next, regarding the structure of the covering portion of the needle cover-3, even if only the region where the needle tube 2 and the needle base 4 are covered is hollow and the other regions are solid. Alternatively, the needle cover 3 may have a structure in which two sheets are bonded together, and the entire region covered by the needle cover 3 may be hollow.

Thirdly, in the form of the rotation preventing means, as shown in FIGS. 1 and 2, the blade 9 is provided at the base end portion of the needle cover-3.
Can be easily and surely achieved. In this example, the two blades 3a and 3b can rotate within an angle range of about 0 to 180 °, and even if the blades try to rotate beyond the range of the angle, they are provided on the blades 3a and 3b. The pair of blades 9 thus formed prevent mutual rotation. In this example, the rotatable range is about 0
Although it is 180 °, it is also possible to change the angle by changing the shape of the blade 9. Alternatively, rotation may be prevented by providing a protrusion in the movable region of the wings 3a and 3b of the needle base 4. Further, as shown in FIGS. 1 and 2, each of the blades 9 is provided with male and female second locking means 10a and 10b, and when the angle formed by the wings is as desired,
As shown in FIG. 1, the pair of blades 9 may be firmly locked to each other.

[0015]

INDUSTRIAL APPLICABILITY When using the injection needle with the needle cover of the present invention, the injection needle can be easily exposed by dividing the needle cover into the right and left, and the needle is divided after the use of the injection needle. By rotating and closing the wing, which is the needle cover, the medical worker can safely cover the injection needle without erroneous puncture. Therefore, you do not have to worry about infection. Further, in the case of infusion or the like, the wing can be used as a fixing means when it is necessary to hold the injection needle or the infusion tube on the body, so that the wing can be easily and surely fixed even in the case of infusion or the like for a long time. In addition, the following effects can be obtained by selecting the following requirements. First, the needle cover can be easily divided and close-closed by providing a male / female locking / dividing means that can be locked and divided in the closely contacting portions on the tip side of the wing. . Further, by providing the rotation preventing means for preventing the rotation of a certain angle or more, the divided needle cover can be rotated as a fixed wing to a position where it is easy to fix. Further, by providing the rotation preventing means with the locking means, it is possible to fix the rotation preventing means at a position where it can be easily fixed. Further, by providing a slip stopper on the surface of the wing, it can be securely fixed to the body. When it is not necessary to fix the blades or when the divided blades are in the way, it is possible to remove the blades by using a separating means in the vicinity of the joining portion. (However, in this case, the needle cannot be recoated after using the needle.)

[Brief description of drawings]

FIG. 1 is a front view showing a state during use of the present invention.

FIG. 2 is a front view showing a state before or after use of the present invention.

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a sectional view of the needle cover taken along the line FF of FIG.

[Explanation of symbols]

 1. Injection needle with needle cover 2. Needle tube 3. Needle cover 3a. Wing portion (right side) 3b. Wing (left side) 4. Needle base 5. Joining part 6. Central part 7. First locking means 7a. First locking means (male) 7b. First locking means (female) 8. Separation means 9. Blade (rotation preventing means) 10. Second locking means 10a. Second locking means (male) 10b. Second locking means (female) 11. Both side edges A. Thickness of coating portion on the needle base side B. Thickness of coating portion on needle tube side (thickness at central portion) C. Thickness at both edges D. Width on proximal side E. Width on the tip side

Claims (14)

[Claims] 1. An injection needle covered with a sheet-shaped needle cover made of a flexible material, the needle cover being connected to the injection needle at a joint portion of a needle base, and the injection needle The needle cover can be divided into two substantially equal parts in the axial direction of the needle, and the divided needle cover of the divided needle cover with the joint as the center of rotation so that the divided needle cover also functions as a wing for fixing the injection needle. A needle cover, characterized in that the wing or the injection needle is provided with rotation preventing means for allowing rotation and preventing rotation of a predetermined angle or more.
Injection needle. 2. The injection needle with a needle cover according to claim 1, wherein the thickness of the needle cover is smaller in the needle tube side covering portion than in the needle base side covering portion. 3. The injection needle with a needle cover according to claim 2, wherein the thickness of the needle cover continuously increases from the needle tube side coating portion toward the needle base side coating portion. 4. The injection needle with a needle cover according to claim 1, wherein both side edges of the needle cover are smaller than the vicinity of the injection needle. 5. The injection needle with a needle cover according to claim 4, wherein the thickness of the needle cover gradually decreases from the central portion toward the both side edge portions. 6. The injection needle with a needle cover according to claim 1, wherein the width of the wing is larger on the distal end (needle tube) side than on the proximal end (needle base) side. 7. The injection with needle cover according to any one of claims 1 to 6, wherein each of the two blades has a first locking means that can be divided or locked at the tip end portions of the wings that closely contact each other. needle. 8. The first locking means comprises a protrusion provided at the tip of one of the blades and a hole provided at the tip of another blade that can be fitted into the protrusion. An injection needle with a needle cover as described in 1. 9. The method according to claim 1, wherein only a region of the needle cover covered with the injection needle and the needle base is hollow.
An injection needle with a needle cover according to any one of 1. 10. The injection needle with a needle cover according to claim 1, wherein the entire needle cover is hollow. 11. The injection needle with a needle cover according to claim 1, wherein the rotation preventing means is a pair of blades provided on the base end (needle base) side of the wing. 12. The injection needle with a needle cover according to claim 11, wherein each of the pair of blades is provided with a male and female second locking means. 13. The injection needle with a needle cover according to claim 1, wherein a slip stopper is provided on the surface of the wing portion. 14. The injection needle with a needle cover according to claim 1, wherein means for separating the wing is provided near the joint.