JPWO2010026644A1 - Medical painless needle - Google Patents

Abstract

The present invention has no pain at the time of insertion, does not cause unnecessary stress on the patient, and can thereby significantly improve the treatment effect, and the skin and muscle at the injection site are cured even if the injection frequency increases. There is provided an injection needle having a tip portion having a pine needle shape and having about 2 to 6 medicinal solution injection ports in a portion of a needle handle close to the tip.

Description

  The present invention relates to a painless injection needle for medical use, and more particularly to the shape of an injection needle used with a syringe.

The tip of a syringe needle used in a conventional syringe is sharply polished by cutting the tip of a hollow syringe needle obliquely.
As a result, the tip of the needle is inserted into the skin, blood vessel, or muscle at the target site, and a chemical solution is injected, or blood is collected.
However, in this method, since the injection needle is inserted by cutting tissues such as skin, blood vessels, and muscles at the time of insertion, it causes great pain to the patient and causes bleeding. Furthermore, it causes the patient to useless stress.
Patients who require frequent injections depending on the degree and type of disease, the injection site is hardened and difficult to inject, and the puncture mark is a cut, so stop bleeding, prevent suppuration and other hygienic measures. Even so, it takes a considerable amount of time to recover.
Moreover, if the puncture site is repeatedly damaged by injection, the skin and muscles are cured at the site.

  Injection needles are also used for injecting and sucking medicinal solutions by inserting needles into infusion bags and container stoppers for infusions. In this case, if a thick needle is used, There is also a possibility of mixing debris into the chemical solution.

  The present invention eliminates the pain at the time of needle insertion, or removes the stress of the patient to enhance the therapeutic effect, while at the same time minimizing the wound at the needle insertion site, An object of the present invention is to provide an injection needle capable of preventing muscle hardening and preventing mixing of fragments of a stopper material during injection and suction of a chemical solution.

The inventor makes the shape of the tip portion of the injection needle a so-called pine needle shape, and the injection port for the chemical solution varies depending on the thickness of the needle and the purpose of use of the injection, but is approximately 2 to 4 mm apart from the tip. It was found that the above-mentioned purpose can be achieved by opening 2 to 6 locations at right angles and at right angles to the needle body.
The present invention has been completed based on such findings.

That is, the present invention
1. The present invention provides an injection needle having a tip shape of pine needles and having 2 to 6 drug solution injection ports in the portion of the needle handle close to the tip.

It is the external appearance of the needle body (hollow) and tip of an injection needle.

It is sectional drawing which cut the needle body (hollow) of the injection needle by the line of AB of FIG.

Explanation of symbols

  1. Chemical injection port

An example of the shape of the injection needle of the present invention is shown in FIGS.
FIG. 1 is an external view of a needle body (hollow) and a distal end portion of an injection needle, and FIG. 2 is a cross-sectional view of the needle body (hollow) of the injection needle in FIG.
1 and 2, reference numeral 1 denotes a chemical solution injection port, and three chemical solution injection ports are provided at right angles on the needle body of the injection needle.
As is apparent from FIGS. 1 and 2, the tip of the injection needle has no cutting edge (a point where the tip of the hollow injection needle body is cut obliquely and sharply polished), and the shape of the tip is for acupuncture Since it has a pine needle shape (curved conical shape) similar to the shape of the eyelid, the needle can be inserted without expanding and damaging the tissue during injection.
Further, since the injection or blood collection of the chemical solution is performed from the chemical solution injection port on the side surface of the needle body, the pain can be eliminated and the stress can be removed.
The injection needle usually has an outer diameter of about 0.4 to 1.2 mm, and the length is usually 20 to 150 mm.
The shape of the tip of the injection needle is not particularly limited as long as it is a pine needle shape, and the angle of the pine needle shape (conical shape) can be arbitrarily selected according to the thickness of the needle and the purpose of use of the injection.
There is no limitation on the shape of the drug solution inlet, and it can be arbitrarily selected depending on the thickness of the needle and the purpose of use of the injection, but it is usually circular.
The circular drug solution inlet usually has an outer diameter of 20 to 50% with respect to the outer diameter of the injection needle.
Moreover, as a place where the chemical solution injection port is opened, it is usually preferable to open the drug solution inlet at a right angle to the needle body at a position 2 to 4 mm away from the needle tip.
There is no restriction | limiting in the number of chemical | medical solution injection ports, It can select arbitrarily by the thickness of a needle | hook, and the intended purpose of injection, and is 2-6 normally.
Moreover, there is no restriction | limiting in the material of an injection needle body, A well-known material can be used.

The needle of the present invention has no pain or slight pain at the time of needle insertion when performing injection or the like, and does not show bleeding even after treatment, even if compared with the conventional method Since it is extremely few, patients can receive injections, blood collection, etc. with peace of mind, and do not give unnecessary stress, so that a great therapeutic effect can be achieved.
Further, in the case of blood transfusion, infusion, etc., it is the same, and there is no fear of mixing of foreign matters such as debris, so that it can be used with confidence.
When inserted into a drip infusion bag or a container stopper, no fragments of the stopper material are generated, so that no foreign matter is mixed into the drug solution.

Claims (1)

  An injection needle having a tip shape of a pine needle shape and having 2 to 6 drug solution injection ports in a portion of a needle handle close to the tip.

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