KR20220102497A - Injection needle for reduced pain and enhanced stability - Google Patents

Abstract

The present invention relates to an injection needle for reducing pain and increasing stability. The injection needle comprises a needle body with a longitudinal channel formed on the inside and a needle end unit provided at the distal end of the needle body. Also, the needle end unit comprises: an end wall formed in a slope with respect to the longitudinal direction and configured to form a pointed tip unit; and a protruding unit provided and protruding from an inner curved surface of the end wall and formed with a predetermined length from the tip unit in the distal end side of the end wall toward the needle body. The injection needle for reducing pain and increasing stability according to the present invention is provided with the protruding unit to improve stability despite a small configuration of the needle end unit, and also pain can be minimized by a specific shape of the tip portion. In addition, since the diameter of an injection needle body is minimized at the end, it is possible to secure 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, needles are needed when blood is drawn for examination or a spinal tap, and when drugs are injected or transfusions are performed for treatment. Not only children but also adults often feel aversion to injections that inject vaccines, insulin, etc., or injections used to collect or donate blood.

In particular, when insulin injection by injection is frequently required, such as in diabetic patients, no matter how small the needle size, the pain and psychological anxiety caused by the injection may affect the proper management of the disease. have. As such, in injection, puncture, blood collection, blood transfusion, etc. using an injection needle, it is very important to reduce the pain and relieve the patient's reluctance and pain. 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 painless injections or injection needles, but there are limitations that are not disclosed in technology 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 puncture, the insertion site lengthens and the pain caused by the injection needle increases. Also, it is often necessary to apply a blood patch for a headache caused by the puncture site not closing quickly after puncture. do.

This occurs because the cross-section of the puncture site is wide and 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 injection needle does not work well. There was a structural problem with bending.

Republic of Korea Public Utility Model 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, which can solve the problems of the conventional injection needle described above.

As a means of solving the above problems, it includes a needle body having a longitudinal channel formed therein and a needle end provided at a distal end of the needle body, the needle end is formed in an inclined plane with respect to the longitudinal direction, and a sharp tip is formed. An injection needle may be provided which includes an end wall configured to be such that it is provided so as to protrude on the inner curved surface of the end wall, and a protrusion formed to a predetermined length from the tip of the distal end of the end wall toward the needle body.

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

In addition, 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 extend to a predetermined length in a straight or curved shape.

Meanwhile, the pair of protrusions may have at least a portion of a shape of a cross-section cut in a direction perpendicular to the extension direction in a circular shape.

Meanwhile, the end wall may include a first concave portion in which an outer surface of a point where the pair of protrusions is formed is concave corresponding to the pair of protrusions.

On the other hand, the pair of protrusions may be configured to protrude more in the longitudinal direction than the tip of the end wall.

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

In addition, the needle body, at least a portion of the shape of the 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 portion of a cross-sectional shape cut along a plane in which the outer surface of the end wall is perpendicular to the longitudinal direction is concave in the longitudinal direction of the central axis of the needle body.

On the other hand, the needle body, at least a portion of the inner diameter may be formed to gradually expand along the longitudinal direction toward the proximal end.

The injection needle for pain reduction and stability increase according to the present invention is provided with a protrusion, so even if the needle end is configured to be small, stability can be improved, and pain can be minimized with a 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 according to an embodiment of the present invention.
2 is a cross-sectional view of the needle end;
3 is an enlarged perspective view showing an enlarged end of the needle, which is another embodiment according to the present invention.
FIG. 4 is a cross-sectional view taken along line I-I' of FIG. 2 .
FIG. 5 is a cross-sectional view taken along II-II' of FIG. 2 .
6 is a cross-sectional view taken along line III-III' of FIG. 2 .
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 tip.
9 is a cross-sectional view of the needle in the longitudinal direction.
10 is a cross-sectional view of an end of a needle, which is another embodiment according to the present invention.
11 is an enlarged perspective view of the end of the needle, which is another embodiment according to the present invention.

Hereinafter, an injection needle for reducing pain and increasing stability according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. And in the description of the embodiments below, the name of each component may be called another name in the art. However, if they have functional similarity and identity, even if a modified embodiment is employed, it can be viewed as an equivalent configuration. In addition, the code added to each component is described for convenience of description. However, the content shown in the drawings in which these symbols are indicated does not limit each component to the range within the drawings. Similarly, even if an embodiment in which the configuration in the drawings is partially modified is employed, if there is functional similarity and sameness, it can be regarded as an equivalent configuration. In addition, in view of the level of a general engineer in the art, if it is recognized as a component to be included of course, a 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 together with a cylinder 20 . The injection needle 10 according to the present invention is configured to be connected to the conventional cylinder 20 and can be used in the same manner as the conventional syringe 1 . As an example, it may be used for injection, body blood, spinal puncture, and the like. At this time, depending on the use, it is fastened with each other cylinder 20, or only the injection needle 10 can 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.

Another embodiment of the injection needle 10 according to the present invention may be provided with a needle body 100 formed to extend in the longitudinal direction and a needle end formed at the 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, the distal end is configured to be inserted into the human body.

At least a portion of the needle body 100 may be configured such that the inner diameter gradually decreases from the proximal end to the needle end (distal end). In this case, as the inner diameter is naturally reduced, the outer diameter may also be reduced.

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

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

Referring to FIG. 2 , the needle end may be configured to be bent toward the longitudinal central axis. That is, with reference to 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 excessive incision or expansion of the tissue on one side. This relieves pain during needle penetration or helps in tissue recovery after needle removal.

The tip of the needle may be formed as an inclined slope that becomes sharper toward the tip 220 . The slope may be generated by cutting the needle end into a virtual curved surface formed at a predetermined angle with the central axis in the longitudinal direction. Therefore, it is possible to minimize tissue expansion and increase incision amount during initial insertion of the needle, and gradually increase tissue expansion and incision amount until the needle end is inserted into the tissue.

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

Referring to Figure 3, an embodiment of the injection needle 10 according to the present invention may be formed by extending the 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 to have a shape that becomes sharper toward the tip 220 .

The end wall 210 becomes a side surface of the cylindrical structure with a part lost, and is configured so that the inner surface 211 of the end neck 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 the slope by forming a predetermined angle with the central axis in the longitudinal direction.

The protrusion 230 reinforces the tip 220 of the tip of the needle, and when the tip 220 penetrates into the tissue, it penetrates in a unique shape to relieve pain.

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

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

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

Meanwhile, the length of the protrusion 230 may be less than half the length of the needle end. This is because the protrusion 230 is tissue incision and expansion after the needle end is inserted into the tissue, and the need for stability and expansion increases as the area of the end wall 210 increases toward the needle body 100 side. because it will not

4 to 6 below show the shape of a cross-section 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 incision 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 I-I' of FIG. 2 .

Referring to FIG. 4, the shape of the cross-section cut at one point on the needle body 100 side (rear) from the tip part 220 is shown, and a pair of protrusions ( 230) is partially connected to each other. At this time, since the protrusion 230 protrudes, it can be inserted while gradually expanding the contacted tissue among the incised tissues upward.

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

5, at a point farther 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. Also, the size of the end wall 210 is gradually increased. In this case, the tissue is cut and expanded from the state of FIG. 4 to the state of FIG. 5 , and the tissue may be expanded by the upper side of the protrusion 230 and the lower side of the end wall 210 in the upper and lower directions on FIG. 5 .

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

The two protrusions 230 are disposed to be more spaced apart from each other than in the state of FIG. 5 described above, and the end wall 210 also has an increased cross-sectional area. In this case, in FIG. 6 , the tissue is sufficiently incised in the left and right directions.

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 cut in a plane perpendicular to the longitudinal direction, at least a portion of the body portion may be configured along an elliptical path. In this case, the left and right sides may be configured as a major axis (a), and the upper and lower axes may be formed as an ellipse having a minor axis (b). In addition, a second concave portion 110 concavely formed toward the longitudinal central axis along the longitudinal direction may be provided on the upper side of the needle body 100 . Due to the second concave portion 110 , the needle body 100 can secure adequate rigidity, particularly, rigidity due to shear force even when the thickness is thin.

As a result, the needle body 100 is structurally stably configured by the cross-sectional shape and the first concave portion 240 configured in an oval shape, so that the incision and expansion area are not wider than when the needle body 100 is configured in a circular shape. It will help relieve the patient's pain and restore the infiltrated tissue.

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

Referring to FIG. 8 , a first concave portion 240 formed to be concave toward the protrusion 230 may be provided on the outer surface 212 of the needle end to correspond to the protrusion 230 . The first concave portion 240 may form a specifically curved cut surface of the tissue, and may secure the strength of the end wall 210 at the point where the protrusion 230 is formed. In addition, the first concave portion 240 can be smoothly created by forming a pleat in a part of the end wall 210 when the needle is manufactured.

9 is a cross-sectional view of the needle 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 of the needle end side may be configured to be the smallest, and when the thickness of each part of the needle body 100 is constant, eventually the inner diameter also gradually increases from D1 to D2 toward the proximal end.

The aforementioned needle body 100 is structurally stable in positive hydraulic pressure due to the change in the cross-sectional shape described in FIG. 7 and the inner diameter described in FIG. 8, minimizes tissue incision required for puncture, and allows the needle body 100 into tissue As it is inserted, it can be inserted while expanding the incised tissue.

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

In the following embodiment, it may be configured to include the same configuration as that of the above-described embodiment, and for this configuration, in order to avoid overlapping description, the description will be omitted and only the different configuration will be described.

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

Referring to FIG. 10 , an injection needle 10 according to another embodiment according to the present invention may be formed by cutting one side from the needle body 100 in which the needle end extends along a straight line. Therefore, the tip 220 may be formed at a point extending in a straight line with the needle body 100 . Also in this embodiment, the protrusion 230 may 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 the end of the needle, which is another embodiment according to the present invention.

Referring to FIG. 11 , a shape in which the protrusion 230 protrudes more in the longitudinal direction than the tip 220 is illustrated. In this case, the distal end-side ends of the pair of protrusions 230 are each configured in the shape of a sharp cone, and may be configured in a shape where the ends meet each other at the same point. In this configuration, the tissue is first punctured by the protrusion 230 , and then incision can be made by the tip 220 . In the case of this configuration, since the puncture is performed from one point during puncture, it is possible to prevent the incision of the tissue from forming rough, thereby reducing the pain of the patient.

As described above, the injection needle for pain reduction and stability increase according to the present invention is provided with a protrusion, so even if the needle end is configured to be small, stability can be improved, and pain can be minimized with a 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: needle
20: cylinder
100: needle body
110: second concave portion
200: needle end
210: end wall
211: inside
212: exterior
220: tip
230: protrusion
240: first recess

Claims (12)

A needle body in which a longitudinal channel is formed on the inside, and
and a needle end provided at the distal end of the needle body,
The needle end is
an end wall formed in an inclined plane with respect to the longitudinal direction and configured to form a pointed tip; and
An injection needle which is provided to protrude on the inner curved surface of the end wall, and includes a protrusion formed by a predetermined length from the tip of the distal end of the end wall toward the needle body. The method of claim 1,
The protrusion is
An injection needle composed of a pair and disposed at a predetermined angle to each other. 3. The method of claim 2,
The pair of protrusions,
Injection needles connected to each other at the tip. 4. The method of claim 3,
The pair of protrusions,
an injection needle formed to be less than half the length of the end wall. 5. The method of claim 4,
The pair of protrusions,
An injection needle extending to a predetermined length in a straight or curved shape. 6. The method of claim 5,
The pair of protrusions, at least a portion of the shape of the cross-section cut in the direction perpendicular to the extension direction is formed in a circular injection needle. 7. The method of claim 6,
the end wall,
An injection needle provided with a first concave portion in which an outer surface of a point where the pair of protrusions is formed is concave corresponding to the pair of protrusions. 3. The method of claim 2,
The pair of protrusions,
an injection needle protruding more in the longitudinal direction than the tip of the end wall. 3. The method of claim 2,
The end wall is at least partly formed by bending the tip portion toward the longitudinal central axis of the needle body. 9. The method of claim 8,
The needle body,
An injection needle in which at least a portion of a shape of a cross-section cut along a plane perpendicular to the longitudinal direction is formed along an elliptical path. 10. The method of claim 9,
The needle body,
The injection needle comprising a second concave portion in which at least a portion of a shape of a cross-section cut along a surface in which the outer surface of the end wall is perpendicular to the longitudinal direction is concave in the longitudinal direction of the central axis of the needle body. 11. The method of claim 10,
The needle body,
An injection needle in which at least a portion of the inner diameter is gradually expanded along the longitudinal direction toward the proximal end.

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