KR102504672B1 - Injection needle for reduced pain and enhanced stability - Google Patents

Abstract

The present invention includes a needle body having a longitudinal channel formed therein, and a needle end provided at a distal end of the needle body, wherein the needle end is formed in a slope with respect to the longitudinal direction and is configured to have a sharp tip. An injection needle comprising an end wall and a protruding portion protruding from an inner curved surface of the end wall and extending a predetermined length from a distal tip of the end wall toward a needle body.
The injection needle for reducing pain and increasing stability according to the present invention is provided with a protruding part so that stability can be improved even though the needle end is made small, and pain can be minimized due to the specific shape of the tip.
In addition, since the diameter of the body of the injection needle is minimized at the end, it is possible to secure the efficiency of fluid flow during blood collection, puncture, and injection.

Description

Injection needle for reduced pain and enhanced stability}

The present invention relates to an injection needle for reducing pain and increasing stability.

In general, a needle is needed when blood is drawn for testing or spinal tap, and when drugs are injected or when blood is transfused for treatment. It is common for adults as well as children to feel aversion to injections for injecting vaccines, insulin, or the like, or injections used for blood collection or blood donation.

In particular, when insulin injection by injection is frequently required, such as in a diabetic patient, no matter how small the needle size, the pain and psychological anxiety caused by being stabbed with an injection can affect proper management of the disease. there is. As described above, it is very important to alleviate a patient's discomfort and pain by reducing pain in injection using an injection needle, puncture, blood collection, blood transfusion, and the like. Nevertheless, injection technology for reducing pain is very rare, and Korean Utility Model Publication No. 20-2009-0011604 (2009.11.16.), Korean Patent Publication No. 10-2012-0103661 (2012.09.19) .), etc. partially discloses a painless injection or injection needle, but there is a limit that is not disclosed in a technique that can more easily perform injection, puncture, blood collection, blood transfusion, etc. while reducing the patient's pain. In addition, in the case of spinal cord puncture, the pain caused by the injection needle increases as the area inserted into the body becomes longer, and it is often necessary to apply a blood patch due to the headache caused by the puncture site not closing quickly after the puncture. do.

This occurs because the cross section of the puncture site is wide and therefore does not close quickly. In order to reduce the cross-sectional area of the puncture site, the cross-sectional area of the injection needle must be narrow. Conventional injection needles have a small tip, so 1) puncture does not work well, 2) blood collection, puncture, or drug injection does not work smoothly, or 3) the needle There was a structural problem that caused it to warp.

Republic of Korea Utility Model Publication No. 20-2009-0011604 (2009.11.16.) Republic of Korea Patent Publication No. 10-2012-0103661 (2012.09.19.)

An object of the present invention is to provide an injection needle for reducing pain and increasing stability that can solve the above-mentioned problems of conventional injection needles.

A means for solving the above problems includes a needle body having a longitudinal channel formed therein, and a needle end provided at a distal end of the needle body, wherein the needle end is formed in a slope with respect to the longitudinal direction, and a sharp tip is formed. An injection needle may be provided that includes an end wall configured to be, and a protrusion protruding on an inner curved surface of the end wall and formed to a predetermined length from a distal tip of the end wall toward the needle body.

On the other hand, the protrusions are composed of a pair and may be disposed at a predetermined angle from each other.

Also, the pair of protrusions may be connected to each other at the tip.

Furthermore, the pair of protrusions may be formed to be less than half the length of the end wall.

In addition, the pair of protrusions may be extended straight or curved to a predetermined length.

Meanwhile, in the pair of protrusions, at least a portion of cross sections cut in a direction perpendicular to the extension direction may be formed in a circular shape.

Meanwhile, the end wall may include a first concave portion formed so that an outer surface of a point where the pair of protrusions are formed corresponds to the pair of protrusions.

Meanwhile, the pair of protrusions may be configured to protrude more in the longitudinal direction than the tips of the end walls.

On the other hand, at least a portion of the end wall may be formed by bending the tip toward the longitudinal central axis of the needle body.

In addition, in the needle body, at least a part of the shape of a cross section cut along a plane perpendicular to the longitudinal direction may be formed along an elliptical path.

Furthermore, the needle body may include a second concave portion in which at least a part of a shape of a cross section of an outer surface of an end wall cut along a plane perpendicular to the longitudinal direction is concave in a direction of a central axis of the longitudinal direction of the needle body.

Meanwhile, the needle body may be formed such that at least a portion of the inner diameter gradually expands along the longitudinal direction toward the proximal end.

The injection needle for reducing pain and increasing stability according to the present invention is provided with a protruding part so that stability can be improved even though the needle end is made small, and pain can be minimized due to the specific shape of the tip.

In addition, since the diameter of the body of the injection needle is minimized at the end, it is possible to secure the efficiency of fluid flow during blood collection, puncture, and injection.

1 is a perspective view of a syringe which is an embodiment according to the present invention.
2 is a cross-sectional view of the needle end.
3 is an enlarged perspective view of an end of a needle according to another embodiment of the present invention.
FIG. 4 is a cross-sectional view taken along line II′ of FIG. 2 .
FIG. 5 is a cross-sectional view taken along line II-II′ of FIG. 2 .
6 is a cross-sectional view taken along line III-III' of FIG. 2;
FIG. 7 is a cross-sectional view taken along line IV-IV' of FIG. 2 .
Fig. 8 is a cross-sectional view showing a modified example of the shape of the needle end.
9 is a cross-sectional view of a needle cut in the longitudinal direction.
10 is a cross-sectional view of an end of a needle according to another embodiment of the present invention.
11 is an enlarged perspective view of an end of a needle which is another embodiment according to the present invention.

Hereinafter, an injection needle for reducing pain and increasing stability according to embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in the description of the following embodiments, the name of each component may be called a different name in the art. However, if they have functional similarity and identity, even if a modified embodiment is employed, it can be regarded as an equivalent configuration. In addition, signs added to each component are described for convenience of description. However, the contents of the drawings in which these symbols are written do not limit each component to the scope in the drawings. Likewise, even if an embodiment in which the configuration in the drawings is partially modified is employed, it can be regarded as an equivalent configuration if there is functional similarity and identity. In addition, in light of the level of a general technician in the relevant technical field, if it is recognized as a component that should be included, the description thereof will be omitted.

1 is a perspective view of a syringe 1 which is an embodiment according to the present invention.

Referring to FIG. 1 , a syringe 1 according to the present invention may be used with a cylinder 20 . The injection needle 10 according to the present invention is configured to be connected to a conventional cylinder 20 and can be used in the same way as a conventional syringe 1. As an example, it may be used for injection, bloodletting, spinal cord puncture, and the like. At this time, depending on the purpose, each other cylinder 20 may be used in combination with each other, or only the injection needle 10 may be used independently.

The syringe 1 according to the present invention may include an injection needle 10 which is another embodiment according to the present invention.

An injection needle 10 according to another embodiment according to the present invention may include a needle body 100 extending in the longitudinal direction and a needle end formed at a distal end.

The needle body 100 is formed to extend in the longitudinal direction, the proximal end may be configured to be connected to the cylinder 20, and the distal end is configured to be inserted into the human body.

The inner diameter of at least a portion of the needle body 100 may gradually decrease from the proximal end to the needle end (distal end). At this time, as the inner diameter is configured to be naturally smaller, the outer diameter may also be configured to be smaller.

The end of the needle may be gradually sharper toward the tip 220, and the protrusion 230 is provided on the inner surface 211 of the end of the needle to penetrate into the tissue in a unique shape. Such a needle will be described in detail with reference to FIGS. 2 to 10 below.

2 is a cross-sectional view of the needle end.

Referring to Figure 2, the needle end may be configured in a bent form toward the longitudinal central axis. That is, based on FIG. 2 , the needle end may be formed to be bent upward. Therefore, as the tip 220 of the needle end approaches the central axis during penetration, it is possible to prevent the tissue on one side from being excessively cut or expanded. This relieves pain during needle penetration or helps tissue recovery after needle removal.

The needle end may be formed as an inclined slope that becomes sharper toward the tip 220 . The slope may be created by incising the end of the needle with a virtual curved surface formed at a predetermined angle with the central axis in the longitudinal direction. Accordingly, when the needle is initially inserted, expansion of the tissue and increase in the amount of incision can be minimized, and expansion of the tissue and increase in the amount of incision can be gradually increased until insertion of the end of the needle into the tissue is completed.

3 is an enlarged perspective view of an end of a needle according to another embodiment of the present invention.

Referring to FIG. 3 , an injection needle 10 according to an embodiment of the present invention may be formed by extending a needle end from the needle body 100 to the distal end.

The needle end may comprise an end wall 210 and a protrusion 230 .

The end wall 210 may be cut into a shape that becomes sharper towards the tip 220 .

The end wall 210 becomes a side surface of a cylindrical structure with a part missing, and is configured so that the inner surface 211 of the end wall can be exposed when viewed from the top. In addition, when viewed from the side, one side of the end wall 210 may be formed along a slope by forming a predetermined angle with the central axis in the longitudinal direction.

The protruding portion 230 reinforces the tip 220 of the needle end, and is configured to penetrate in a unique shape when the tip 220 penetrates into tissue, thereby relieving pain.

The protrusion 230 may be provided on the inner curved surface of the end wall 210, that is, on the surface extending from the inner surface of the needle body 100. The protrusion 230 may extend from the tip 220 toward the needle body 100. The protrusions 230 may be configured as a pair, for example, and the pair of protrusions 230 are connected to each other at the tip end 220 and become farther away from each other toward the needle body 100, that is, at a predetermined angle from each other. can be formed by placing

The shape of each protrusion 230 is convex on the inner surface 211 of the end wall 210, and at least part of it is formed along a circular path when cut in a plane perpendicular to the central axis in the longitudinal direction of the needle. It can be formed along a curve. Therefore, as the end of the needle is inserted into the tissue, unnecessary tissue damage is minimized and tissue expansion can be performed.

On the other hand, the protrusion 230 is composed of a cylindrical shape as a whole, and one side is connected to the tip 220 in a shape that becomes sharper toward the tip 220, so that the structural stability of the tip 220 can be improved. there will be In particular, when the tip 220 is inserted, it is formed at a certain angle from the central axis in the longitudinal direction of the needle, so that strong strength against shear force generated can be secured.

Meanwhile, the length of the protruding portion 230 may be less than half of the length of the needle end. This is because the protruding part 230 incises and expands the tissue after the needle end is inserted into the tissue, and the need for stability and expansion does not increase as the area of the end wall 210 increases toward the needle body 100. because it will not

4 to 6 below show cross-sectional shapes cut in a plane perpendicular to the central axis in the longitudinal direction at each part of the needle end. On the other hand, as the needle end penetrates into the tissue, the formation of the incised and expanded tissue becomes similar to the cross-sectional shape of the needle end shown in FIGS. 4 to 6, and sequentially changes to the shape shown in FIGS. 4 to 6 . Hereinafter, the shape of the cross section of each part and the incision and expansion shape of the tissue will be described.

FIG. 4 is a cross-sectional view taken along line II′ of FIG. 2 .

Referring to FIG. 4, the shape of a cross section cut at a point on the needle body 100 side (rear side) from the tip 220 is shown, and a pair of protrusions provided on the inner surface 211 of the end face ( 230) is shown as a shape in which parts are connected to each other. At this time, since the protruding portion 230 protrudes, the tissue to be in contact among the incised tissues can be inserted while gradually expanding upward.

FIG. 5 is a cross-sectional view taken along line II-II′ of FIG. 2 .

Referring to FIG. 5, at a point away from the tip 220, the protrusion 230 becomes slightly larger than the diameter of the protrusion 230 shown in FIG. It is placed at a point slightly spaced to the right. In addition, the size of the end wall 210 also gradually increases. At this time, the tissue is incised and expanded from the state of FIG. 4 to the state of FIG. 5, and the tissue can be expanded in the upper and lower directions in FIG. 5 by the upper side of the protrusion 230 and the lower side of the end wall 210.

6 is a cross-sectional view taken along line III-III' of FIG. 2;

The two protrusions 230 are disposed farther apart from each other than the state of FIG. 5 described above, and the end wall 210 also increases its cross-sectional area. In this case, the tissue in FIG. 6 is fully incised in the left and right directions.

FIG. 7 is a cross-sectional view taken along line IV-IV' of FIG. 2 . Referring to FIG. 7 , when the cross section of the needle body 100 is incised, that is, a plane perpendicular to the longitudinal direction, at least a portion of the body portion may be formed along an elliptical path. At this time, the left and right sides may be composed of long axes (a), and the top and bottom axes may be formed as an ellipse having a short axis (b). In addition, a second concave portion 110 may be provided on the upper side of the needle body 100 to be concave toward the central axis in the longitudinal direction along the longitudinal direction. Due to the second concave portion 110, even if the needle body 100 is thin, appropriate rigidity, particularly rigidity due to shear force, can be secured.

As a result, the needle body 100 is structurally stable by the elliptical cross-sectional shape and the first concave portion 240, and the incision and expansion area is not wider than when the needle body 100 is circular. It is configured to help relieve the patient's pain and recover the infiltrated tissue.

Fig. 8 is a cross-sectional view showing a modified example of the shape of the needle end.

Referring to FIG. 8 , the outer surface 212 of the needle end may be provided with a concave surface corresponding to the protrusion 230 , that is, a first concave portion 240 formed concave toward the protrusion 230 . The first concave portion 240 may form a cut surface of a specially curved tissue, and may secure strength of the end wall 210 at a point where the protrusion 230 is formed. In addition, the first concave portion 240 may be smoothly formed by forming wrinkles on a portion of the end wall 210 during manufacturing of the needle.

9 is a cross-sectional view of a needle cut in the longitudinal direction.

Referring to FIG. 9, as described above, the inner diameter of the needle body 100 increases toward the proximal end. For example, the inner diameter D0 at the end of the needle may be the smallest, and when the thickness of each part of the needle body 100 is constant, the inner diameter gradually increases from D1 to D2 toward the proximal end.

The above-described needle body 100 is structurally stable under amniotic pressure due to the cross-sectional shape described in FIG. 7 and the change in inner diameter described in FIG. As it is inserted, it can be inserted while expanding the incised tissue.

Hereinafter, another embodiment of the injection needle 10 according to the present invention will be described with reference to FIGS. 10 and 11.

The following embodiments may also include the same configurations as the above-described embodiments, and descriptions of these configurations will be omitted to avoid redundant description, and only configurations with differences will be described.

10 is a cross-sectional view of an end of a needle according to another embodiment of the present invention.

Referring to FIG. 10 , an injection needle 10 according to another embodiment of the present invention may be formed by cutting one side of a needle body 100 in which a needle end extends along a straight line. Therefore, the tip 220 may be formed at a point extending in a straight line from the needle body 100 . In this embodiment, the protrusion 230 may also be provided, and the protrusion 230 may also be formed in a straight line from the tip 220 to the inner surface 211 of the end wall 210 .

11 is an enlarged perspective view of an end of a needle which is another embodiment according to the present invention.

Referring to FIG. 11 , a shape in which the protruding portion 230 protrudes more in the longitudinal direction than the tip portion 220 is shown. At this time, each of the distal end side ends of the pair of protrusions 230 is configured in a sharp cone shape, and the ends may be configured in a shape where the ends meet each other at the same point. In this configuration, the tissue is first perforated by the protruding portion 230, and then incised by the tip portion 220. In the case of this configuration, puncture is performed from a single point during puncture, so that the incision surface of the tissue can be prevented from being formed rough, thereby reducing the patient's pain.

As described above, the injection needle for reducing pain and increasing stability according to the present invention is provided with a protrusion, so that stability can be improved even if the tip of the needle is made small, and pain can be minimized due to the specific shape of the tip. .

In addition, since the diameter of the body of the injection needle is minimized at the end, it is possible to secure the efficiency of fluid flow during blood collection, puncture, and injection.

1: Syringe
10: injection needle
20: cylinder
100: needle body
110: second concave portion
200: needle end
210: end wall
211: inside
212: turn away
220: tip
230: protrusion
240: first concave portion

Claims (12)

A needle body having a longitudinal channel formed therein, and
And a needle end provided at the distal end of the needle body,
The needle end,
an end wall formed in a slope with respect to the longitudinal direction and configured to form a pointed tip; and
a protruding portion protruding from the inner curved surface of the end wall and having a predetermined length from the distal tip of the end wall toward the needle body;
The protruding portion is composed of a pair, and the injection needle is disposed at a predetermined angle from each other. delete According to claim 1,
The pair of protrusions,
Injection needles connected to each other at the tips. According to claim 3,
The pair of protrusions,
An injection needle formed at less than half the length of the end wall. According to claim 4,
The pair of protrusions,
An injection needle extending a predetermined length in a straight or curved shape. According to claim 5,
The pair of protrusions, the injection needle in which at least a part of the shape of the cross section cut in a direction perpendicular to the extension direction is formed in a circular shape. According to claim 6,
the end wall,
An injection needle having a first concave portion formed so that an outer surface of a point where the pair of protrusions are formed is concave to correspond to the pair of protrusions. According to claim 1,
The pair of protrusions,
An injection needle protruding more in the longitudinal direction than the tip of the end wall. According to claim 1,
The injection needle according to claim 1 , wherein at least a portion of the end wall is formed by bending the tip toward a longitudinal central axis of the needle body. According to claim 8,
The needle body,
An injection needle in which at least a part of the shape of a cross section cut along a plane perpendicular to the longitudinal direction is formed along an elliptical path. According to claim 9,
The needle body,
An injection needle comprising a second concave portion formed in which at least a part of a shape of a cross section of an outer surface of the end wall is incised along a plane perpendicular to a longitudinal direction of the needle body to be concave in a direction of a central axis of the longitudinal direction of the needle body. According to claim 10,
The needle body,
An injection needle formed by gradually expanding at least a portion of the inner diameter along a longitudinal direction toward the proximal end.

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