JP3134857U - Winged needle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winged needle with which it is easy to visually recognize blood flow inside a winged needle when puncturing a vein.
SOLUTION: A winged needle comprising a needle that forms a blade surface at the tip, a needle base that joins the needle to the tip, and a wing-shaped piece that is foldable, the needle base having a transparent portion. And the transparent portion is provided so that the blood flow inside the winged needle can be visually recognized from the outside.
[Selection] Figure 1

Description

  The present invention relates to an improvement of a winged needle used for transfusion, blood transfusion, and blood sampling by inserting a needle into a subcutaneous vein of an infant or an elderly patient.

  The winged needle is a blood velocity that flows backward when the needle tip is inserted into the vein, even if the subcutaneous vein is mainly thin and congested so that it fills the inside with less blood. It is particularly preferred when it is slow and the back flow rate is low and puncture is difficult. The pterygium needle began with use when only a very thin vein in the scalp of the newborn could be aimed at, so it was called a scalp vein needle. It can be confirmed, and after the puncture is successful, the pterygium is spread to the left and right, and it is easy to fix on the skin with adhesive tape from above, and the needle is shorter and thinner than the normal injection needle, The characteristics of the winged needle that makes it easy to puncture thin subcutaneous blood vessels are characteristics such as the bevel, which is easy to use, with a slanted tip of the needle pointed upward and an obtuse angle at the tip. Yes. For this reason, winged needles are particularly valuable in debilitating elderly people, especially if they have only a very thin vein that can be seen directly under the skin from the back of the foot, lower leg, back of the hand, and wrist to forearm, but cannot find a vein injection or drip route. It is regularly used by nurses as a unique medical device.

In conventional medicine, when a needle is pointed to a thin thin blood vessel such as an infant or an elderly debilitated patient, a winged needle 1 as shown in FIG. 2 is used.
The winged needle 1 is composed of a main body 6 having wing-like pieces (wings) 4a and 4b which can be bent like butterfly wings on a needle base 3 of a needle 2 shorter than a normal one, and a long flexible piece. A transparent connecting tube 7 is connected, and the other end of the tube is a female joint (luer paper connector) that connects to the tip of the syringe and the infusion set. It is packaged, sterilized and manufactured and supplied as a set with caps. Usually, it depends on JIS T 3222 (sterilized winged needle) in Japan.
When the winged needle 1 is used, the body 6 of the winged needle 1 is grasped with the right and left winged pieces 4a and 4b being pinched between the first and second fingers of the dominant hand, and the needle 2 The tip is punctured by aiming at the subcutaneous vein. To confirm that the needle tip is in the vein, blood flows from the punctured vein into the transparent connecting tube 7 (so-called flash). It is necessary to visually confirm the back phenomenon).

  However, in the conventional winged needle, the needle base 3 of the needle 1 has a structure that vertically penetrates the main body 6 configured integrally with the left and right central portions of the winged pieces 4a and 4b. There is no portion through which the inside of the main body 6 of the winged needle to which the right and left central portions of the winged pieces 4a and 4b adhere can be seen, and the backflow of blood can be seen through after the backflowed blood enters the transparent connecting tube 7. Therefore, during the venipuncture operation, the operator's own fingers holding the left and right wing-like pieces (wings) 4a and 4b of the winged needle 1 obstruct the operator's visual field and have the same visual field as the needle tip during the puncture operation. In the configuration that can not be seen. For this reason, the fingers that pick up the wing-like pieces 4a and 4b block the field of view, so that the blood flowing back through the connecting tube 7 can be checked by looking into between the fingers of the operator or from the side. However, it is necessary to devise other assistants to see and be signaled, but there are problems such as unstable operation and slow confirmation.

In order to solve such a point, in Patent Document 1, a small dropper is provided on the tubular body constituting the main body of the winged needle. By operating a transparent dropper capable of returning the shape with a fingertip, In addition, a device has been devised in which the backflow of blood can be visually observed.
Utility registration model No. 3061236

  However, the winged needle described in Patent Document 1 is expensive because it requires a considerably complicated manufacturing process. Therefore, once the sterilization package is opened, it is likely to be expensive as a consumable item to be disposable, and during the puncture operation. Therefore, there is a disadvantage that the whole puncture operation is complicated and unstable, and it is difficult to spread because it requires skill.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a winged needle in which it is easy to visually recognize the blood flow inside the winged needle when puncturing a vein.

  The present invention is a winged needle comprising a needle that forms a blade surface at the tip, a needle base that joins the needle to the tip, and a wing-shaped piece that can be bent. The transparent portion is provided on the tip side of the attachment portion for attaching the winged piece to the winged needle, and the transparent portion is configured so that the blood flow inside the winged needle can be visually recognized from the outside. A winged needle characterized by the above. This invention was discovered in order to achieve the said objective by the result of an inventor's earnest examination.

  According to the present invention, the blood that has flowed back through the metal needle does not interfere with the visual field of the finger during the venipuncture operation by grasping the winged needle by sandwiching the winged piece from the needle tip of the needle. By monitoring the transparent part of the tubular body installed in the place or the transparent hole or slit provided at the needle base, the operator can visually recognize the movement of the operator's line of sight within the same field of view as the target vein or needle tip. This eliminates the need for the operator to look into his or her hand, or to ask the assistant to look under the operator's hand and signal the blood flow back into the connecting tube. It was.

  Further, by using the winged needle of the present invention, even if the amount of blood required to visually recognize blood backflow is reduced by the amount that the internal volume from the needle tip to the transparent portion is reduced rather than reaching the connecting tube. This reduces the time difference between needle venous puncture and blood reversal flow, and prevents the needle tip from passing through a fine vein. The probability of successful puncture increases.

  Hereinafter, an example of an embodiment in which the present invention is applied to a winged needle will be described with reference to the drawings. As shown in FIGS. 1 and 3 to 5, the winged needle 1 includes a needle 2, a needle base 3, and a winged shape. The needle base 3 is provided with a transparent portion 10.

  The needle 2 is formed into a hollow shape by forming a blade surface at the tip of a known material such as stainless steel. The needle 2 is preferably a small-diameter (23 gauge or more) needle. The proximal end of the needle 2 is held by an adhesive or the like on the distal end side of the needle base 3. Furthermore, the needle tip of the needle 2 is protected by a needle cap before the use of the winged needle 1.

  The needle base 3 is formed of a known plastic material such as polypropylene, and may be integrally formed with the wing-like piece 4 and the tubular body 5. In FIG. 1, the needle base 3 includes a needle 2 on the distal end side, and includes a tubular body 5 including a wing-shaped piece on the outer peripheral surface. Further, the wing-like piece 4 is attached to the tubular body in order to be fixed to the wing-like needle 1, and the needle base 3 is provided with a transparent part 10 on the tip side of the attached part of the wing-like piece 4. The proximal end of the needle 2 is provided on the distal side of the distal end. Further, a flexible transparent connecting tube 7 is connected to the proximal end of the winged needle body 6.

  The wing-like pieces 4a and 4b are formed of a known plastic material such as polypropylene, and may be integrally formed with the tubular body 5 or may be formed by itself and then attached to the tubular body 5 using an adhesive or the like. You may let them. As shown in FIG. 1, the wing-like pieces 4 a and 4 b are thin like a butterfly wing, are formed on a flat surface, and have flexibility so that they can be easily grasped with fingers. Further, the wing-like pieces 4a and 4b may be variously colored in accordance with the number of gauges in order to identify the thickness (number of gauges) of the needle 2.

  The tubular body 5 is formed of a known plastic material such as polypropylene, and may be integrally formed with the needle base 3 or may be integrally formed with the wing-shaped piece 4. The tubular body 5 includes a wing-like piece 4 on the outer peripheral surface and is disposed on the outer peripheral surface of the needle base 3. Although the tubular body 5 is used in this embodiment, the wing-like pieces 4 a and 4 b may be directly attached to the needle base 3 without providing the tubular body 5.

  The transparent portion 10 is provided on the distal end side (the distal end side with respect to the tubular body 5 in FIG. 1) from the attachment portion of the wing-like piece 4 at the needle base 3. The transparent part 10 is provided so that the blood flow inside the winged needle 1 can be visually recognized from the outside. The transparent portion 10 can be provided on a part or all of the needle base 3 so that the blood flow inside the winged needle is directly visible to the operator. Moreover, as a shape of the transparent part 10, although it can be set as arbitrary shapes, since the visual recognition of the flow of blood is easy, a strip | belt shape, a hole shape, or a slit shape can be employ | adopted. As shown in FIG. 1 and FIG. 3, the band-like shape includes a shape in which a transparent part is provided only in the circumferential half of the circumference, or a needle from the proximal side toward the distal side as shown in FIG. 1 and FIG. 3. The shape provided in the longitudinal direction of the original 3 may be sufficient. Furthermore, the shape of the slit-like transparent portion is a shape like the slit portion 11 shown in FIGS. 4 and 5, and a plurality of such slit portions 11 may be provided. In addition, as with the slit-shaped transparent portion, one or more hole-shaped transparent portions can be provided so that the blood flow can be visually recognized. In addition, as shown in FIG. 4, the slit-shaped transparent portion is not limited to the one provided at the needle base 3, and may be provided extending to the tubular body.

Next, an example of how to use the winged needle of the present invention will be described with reference to the drawings.
First, with the needle cap covering the needle 2 removed, as shown in FIG. 4, the left and right wing pieces 4a, 4b are vertically gripped with fingers to grasp the wing needle 1 while holding the wing needle 1 subcutaneously. The needle 2 is gradually inserted into the vein (see FIG. 3 or FIG. 5). During the insertion operation, the state in which blood flows in the proximal direction of the tubular body 5 can be visually recognized through the transparent portion within the same visual field operated by the operator. When the flow of blood inside the winged needle 1 can be confirmed, insertion of the needle 2 is stopped, the winged piece is opened, and fixed to the patient's skin with adhesive tape or the like.
Next, the connecting tube is connected to a syringe, an infusion set or the like, and a predetermined medical practice is performed. After the medical treatment is completed, the syringe and the infusion set are removed from the connecting tube, and then the wing-like pieces 4a and 4b fixed with the adhesive tape or the like are gripped in the same manner as before puncturing, and the indwelling needle is removed from the body.
Finally, the indwelling needle removed from the patient is immediately discarded.

  When the pterygium needle 1 is used to puncture a thin subcutaneous vein and the injection of the infusion is started, various practical operation devices have been made. First, it is necessary to eliminate air bubbles in the injection path by filling the transparent infusion solution from the connecting tube connected through the infusion set to the needle tip. In order to fill the subcutaneous vein of the patient's upper limb or lower limb with blood as much as possible, a so-called tourniquet is used as a tourniquet, arterial blood is passed through the periphery, and venous blood is passed through the periphery of the upper limb or lower limb. Over time, fill the narrow veins as much as possible while devising how to tie them up to the side and how to tie them up. Warming cold areas and massaging are popular aids. Still, when the amount of blood flowing back when puncturing with the needle 2 is small, the conventional winged needle slowly flows back through the tubular body 5 because there is no transparent portion in the entire body 6. In order to check the blood, it is necessary to wait until it reaches the inside of the connecting tube 7, so there is a low possibility that the amount of backflow blood is insufficient and the amount of the blood is insufficient, and it is not possible to secure a venous passage that can be called a lifeline. Become. To promote the backflow of blood, puncture the needle 2 and then lower the position of the bottle or bag containing the infusion to lower the pressure on the infusion side, or connect it in the middle of the infusion set. It is preferable to devise a method of allowing the air to flow back to the outside without introducing bubbles, for example, by performing an operation of opening it to an external pressure through a certain three-way cock. When a negative pressure is created by connecting a syringe, there is a drawback that the back flow does not continue due to occlusion of fine veins due to too strong negative pressure. The place where puncture can be performed with a thin subcutaneous blood vessel is usually limited as the medical condition worsens. Therefore, successful puncture as much as possible is very clinically effective in reducing valuable time. is important. If it fails once, it will be very difficult to use peripheral veins as well as the same place. Making such difficult procedures essential to maintaining patient life easy and reducing the time to success has great social benefits in terms of reducing daily clinical labor and labor. When transfusion is necessary, it is necessary to switch to transfusion after confirming that the transfusion is smoothly infused. When collecting blood, the winged needle is left empty, but it is the same that confirmation of blood backflow is necessary.

  The medical need to puncture thin blood vessels under the skin of newborn infants, infants, and debilitated elderly is increasing more and more due to advances in infusion therapy and blood tests. It is necessary to puncture veins repeatedly, especially in elderly patients, including home care for the elderly, but the places where thin subcutaneous veins can be punctured are gradually limited as the condition worsens, so as few times as possible Successful puncture is very important clinically. Facilitating such difficult venipuncture procedures that are essential to maintaining patient life and, as a result, reducing the time to successful puncture, is a matter of daily clinical labor in a society where the population of older people is increasing. By reducing the effort, it has a great social effect.

  Furthermore, the improvement of the winged needle to achieve this purpose can be easily achieved by simply changing a part of the structure of the conventional product, so that the complexity of the structure can be avoided and the increase in production cost can be suppressed. The possibility of improving the importance of winged needles in the medical industry, combined with the popularity of winged needles, which are single-use, mass-produced products, and the expectation of improved usability Expected not small.

It is a top view which shows an example of embodiment of this invention. It is a top view of the conventional winged needle. In FIG. 1, it is the schematic diagram from the horizontal direction which shows the use condition which punctured the vein. It is the elements on larger scale which show another example of embodiment of this invention. In FIG. 4, it is the schematic diagram from the horizontal direction which shows the use condition which punctured the vein.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wing needle 2 Needle 3 Needle base 4 (4a, 4b) Wing piece 5 Tubular body 6 Wing needle body 7 Connection pipe 10 Transparent part 11 Slit part V Vein B Blood

Claims (4)

A winged needle comprising a needle that forms a blade surface at the tip, a needle base that joins the needle to the tip, and a winged piece that is foldable,
The needle base includes a transparent portion, and the transparent portion is provided so that a blood flow inside the wing needle can be visually recognized from the outside. The winged needle according to claim 1, wherein the winged pieces are provided on both sides of the outer peripheral surface of the tubular body, and the tubular body is disposed on the outer peripheral surface of the needle base. The winged needle according to claim 1 or 2, wherein the transparent portion is provided in a band shape, a hole shape, or a slit shape. 4. The winged needle according to claim 3, wherein the transparent portion has a belt shape in the circumferential direction or a belt shape in the longitudinal direction over the entire circumference or half circumference.

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