阅读说明：本技术 针灸针 (Acupuncture needle ) 是由 中野亮一 金子雄哉 谷口昇平 小林拓哉 于 2020-12-17 设计创作，主要内容包括：本发明的目的提供使用方便性良好的针灸针。针灸针(1)具有：针身(2),其在前端形成有针尖部(2a)；针柄(3),其安装于该针身(2)的基端部,针柄(3)的将长度方向横截的截面形状为椭圆。(The invention provides an acupuncture needle which is convenient to use. An acupuncture needle (1) is provided with: a needle body (2) having a needle tip portion (2a) formed at the tip end thereof; a needle handle (3) attached to the proximal end of the needle body (2), wherein the needle handle (3) has an elliptical cross-sectional shape that intersects the longitudinal direction.)

1. An acupuncture needle, comprising: a needle body having a needle tip portion formed at a front end thereof; and a needle shaft attached to the proximal end of the needle body,

the acupuncture needle is characterized in that,

the cross section of the needle handle, which is transversal to the length direction, is oval,

the needle tip portion is not in a hook shape but in a sharp shape, the needle body is not bent in the middle but is in a straight shape, and the needle body is not detachable from the needle shaft.

2. An acupuncture needle, comprising: a needle body having a needle tip portion formed at a front end thereof; and a needle shaft attached to the proximal end of the needle body,

the acupuncture needle is characterized in that,

the cross section of the needle handle, which is transversal to the length direction, is oval,

a concave-convex portion is formed on the surface of the needle handle along the length direction of the needle handle,

the major axis of the ellipse of the cross-sectional shape of the concave portion of the uneven portion, which cross-sections the needle shaft in the longitudinal direction thereof, is smaller than the major axis of the ellipse of the cross-sectional shape of the convex portion of the uneven portion, which cross-sections the needle shaft in the longitudinal direction thereof,

the minor axis of the ellipse of the cross-sectional shape of the concave portion that intersects the longitudinal direction of the needle shaft is smaller than the minor axis of the ellipse of the cross-sectional shape of the convex portion that intersects the longitudinal direction of the needle shaft,

the needle tip portion is not in a hook shape but in a sharp shape, the needle body is not bent in the middle but is in a straight shape, and the needle body is not detachable from the needle shaft.

3. The needle of claim 1 or 2, wherein,

the acupuncture needle has a needle tube for inserting the acupuncture needle to assist in puncturing the skin when puncturing the skin,

the cross section of the needle tube, which is transversal to the length direction, is oval,

the shortest of the opposing distances of the needle cannula is the 1 st opposing distance,

the cross section of the needle handle, which is transversal to the length direction, is oval,

the length of the major axis of the ellipse is greater than the 1 st opposed distance.

4. An acupuncture needle, comprising: a needle body having a needle tip portion formed at a front end thereof; and a needle shaft attached to the proximal end of the needle body,

the acupuncture needle is characterized in that,

a concave-convex portion is formed on the surface of the needle handle along the length direction of the needle handle,

the length of the 1 st long side and the 2 nd long side in the 1 st long side is larger than the length of the 2 nd long side,

the 1 st long side is a side having the longest length between a portion of one outer peripheral edge and a portion of the other outer peripheral edge in a straight line crossing the outer peripheral edge of a cross section of the convex portion of the uneven portion, the cross section crossing the longitudinal direction of the needle shaft,

the 2 nd long side is a side having the longest length between a portion of one outer peripheral edge and a portion of the other outer peripheral edge in a straight line crossing the outer peripheral edge of the cross section perpendicularly to the 1 st long side,

the length of the 1 ' long side and the 2 ' long side is greater than the length of the 2 ' long side,

the 1 st' long side is a side having the longest length between a portion of one outer peripheral edge and a portion of the other outer peripheral edge in a straight line crossing the outer peripheral edge of a cross section of the concave portion of the uneven portion, the cross section crossing the longitudinal direction of the needle shaft,

the 2 'long side is a side having the longest length between a portion of one outer peripheral edge and a portion of the other outer peripheral edge in a straight line that intersects the outer peripheral edge of the cross section perpendicularly to the 1' long side.

5. The needle of claim 4, wherein the needle is a needle-shaped acupuncture needle,

the acupuncture needle has a needle tube for inserting the acupuncture needle to assist in puncturing the skin when puncturing the skin,

a needle shaft in the needle tube is provided along an outer surface of the needle shaft with an interval (t) between an inner wall of the needle tube and the outer surface of the needle shaft in a cross section of the needle shaft in a longitudinal direction of the needle tube, and allows a longitudinal movement of the needle in the needle tube,

the outer wall of the needle tube is arranged along the inner wall of the needle tube,

the shortest of the opposing distances of the needle cannula is the 1 st opposing distance,

the length of the 1 st long side is larger than the 1 st opposing distance.

Technical Field

The present invention relates to an acupuncture needle, and more particularly, to an acupuncture needle which is easy to use.

Background

Conventionally, there is an acupuncture needle having a needle body with a tip portion formed at a tip end thereof and a needle shaft attached to a proximal end portion of the needle body (patent document 1).

The needle shaft has a cross-sectional shape that is generally a perfect circle when the needle shaft is cross-sectioned in the longitudinal direction.

Prior art documents

Patent document 1: japanese patent laid-open publication No. 2019-136385

Disclosure of Invention

Problems to be solved by the invention

However, for example, when the needle is inserted into the side of the face, the needle may be bent and the needle may be dropped, and on the other hand, the inserted needle may shake and give a sense of discomfort, pain, and the like to the patient.

In order to reduce the deflection amount of the needle, it is sufficient to make the perfect circle of the cross-sectional shape of the needle shaft, which is transverse to the longitudinal direction, small, but if it is too small, it is difficult to pinch it with the hand, which may hinder the operation.

The present invention provides an acupuncture needle which has been made in consideration of the above-mentioned problems.

Means for solving the problems

The acupuncture needle according to claim 1 comprises: a needle body having a needle tip portion formed at a front end thereof; and a needle shaft attached to a proximal end portion of the needle body, wherein a cross-sectional shape of the needle shaft, which is a cross-section taken in a longitudinal direction, is an ellipse, the needle tip portion is not a hook shape but a sharp shape, the needle body is not bent in the middle but is linear, and the needle body is not attached to or detached from the needle shaft.

The acupuncture needle according to claim 2 comprises: a needle body having a needle tip portion formed at a front end thereof; and a needle shaft attached to a proximal end portion of the needle body, wherein the needle shaft has a cross-sectional shape that is elliptical in a transverse direction, a concave-convex portion is formed on the surface of the needle shaft along the longitudinal direction of the needle shaft, the major axis of the cross-sectional shape of the concave portion of the concave-convex portion, which intersects the longitudinal direction of the needle shaft, is smaller than the major axis of the cross-sectional shape of the convex portion of the concave-convex portion, which intersects the longitudinal direction of the needle shaft, the minor axis of the ellipse of the cross-sectional shape of the concave portion that intersects the longitudinal direction of the needle shaft is smaller than the minor axis of the ellipse of the cross-sectional shape of the convex portion that intersects the longitudinal direction of the needle shaft, the needle tip portion is not in a hook shape but in a sharp shape, the needle body is not bent in the middle but is in a straight shape, and the needle body is not detachable from the needle handle.

An acupuncture needle according to claim 3 is the acupuncture needle according to claim 1 or 2, wherein the acupuncture needle includes a needle tube for assisting skin puncture by inserting the acupuncture needle when puncturing the skin, an outer shape of a cross section of the needle tube, which is a cross section taken in a longitudinal direction, is an ellipse, a shortest length of the opposing distances of the needle tube is a 1 st opposing distance, a cross section of the needle shaft, which is a cross section taken in a longitudinal direction, is an ellipse, and the length of a major axis of the ellipse is larger than the 1 st opposing distance.

The acupuncture needle according to claim 4, comprising: a needle body having a needle tip portion formed at a front end thereof; and a needle shaft attached to a proximal end portion of the needle body, wherein a concave-convex portion is formed on a surface of the needle shaft along a longitudinal direction of the needle shaft, a 1 st long side and a 2 nd long side are in a relationship of a length of the 1 st long side > a length of the 2 nd long side, the 1 st long side is a side having a longest length between a part of one outer peripheral edge and a part of the other outer peripheral edge in a straight line crossing an outer peripheral edge of a cross section of the convex portion of the concave-convex portion crossing the longitudinal direction of the needle shaft, the 2 nd long side is a side having a longest length between the part of the one outer peripheral edge and the part of the other outer peripheral edge in a straight line crossing the outer peripheral edge of the cross section orthogonal to the 1 st long side, and a length of the 1 st long side and the 2 nd long side > a length of the 2 nd long side, the 1 ' long side is a side having the longest length between a portion of one outer peripheral edge and a portion of the other outer peripheral edge in a straight line crossing the outer peripheral edge of a cross section of the concave portion of the concave-convex portion, the cross section crossing the longitudinal direction of the needle shaft, and the 2 ' long side is a side having the longest length between a portion of one outer peripheral edge and a portion of the other outer peripheral edge in a straight line crossing the outer peripheral edge of the cross section perpendicularly to the 1 ' long side.

An acupuncture needle according to claim 5 is based on claim 4, and includes a needle tube for inserting the acupuncture needle to assist skin puncture when puncturing the skin, wherein an inner wall of the needle tube is provided along an outer surface of the needle shaft with a gap t therebetween in a cross section of the needle shaft in a longitudinal direction of the needle tube, and allows longitudinal movement of the acupuncture needle in the needle tube, an outer wall of the needle tube is provided along the inner wall of the needle tube, a shortest one of opposing distances of the needle tube is a 1 st opposing distance, and a length of the 1 st long side of the acupuncture needle is greater than the 1 st opposing distance.

Drawings

FIG. 1 is a front view schematically showing an acupuncture needle according to an embodiment of the present invention.

Fig. 2(a) is a sectional view taken along line 2-2 of fig. 1, fig. 2(b) is a sectional view taken along line 2 '-2' of fig. 1, and fig. 2(c) is a schematic sectional view of a shank of a conventional acupuncture needle.

Fig. 3 is a schematic sectional view of the needle grip of fig. 2(a) held by the index finger and the thumb.

Fig. 4 is a schematic cross-sectional view showing a state in which the needle holder of fig. 2(a) is placed on the placement surface.

Fig. 5 is a schematic perspective view showing a state in which the acupuncture needle of fig. 1 is operated on a plurality of facial surfaces.

Fig. 6 is a schematic plan view showing a state in which the acupuncture needle of fig. 1 is operated on a plurality of facial surfaces.

FIG. 7 is a schematic front view of the acupuncture needle of another embodiment different from that of FIG. 1.

Fig. 8 (a) is a cross-sectional view taken along line 8-8 of fig. 7, fig. 8 (b) is a cross-sectional view taken along line 8 '-8' of fig. 7, and fig. 8 (c) is a schematic cross-sectional view of the needle shaft in which the corner of fig. 8 (a) is chamfered.

FIG. 9 is a schematic front view of the acupuncture needle of another embodiment different from that of FIG. 7.

Fig. 10 (a) is a cross-sectional view taken along line 10-10 of fig. 9, fig. 10 (b) is a cross-sectional view taken along line 10 '-10' of fig. 9, and fig. 10 (c) is a schematic cross-sectional view of the needle shaft in which the corner of fig. 10 (a) is chamfered.

Fig. 11 (a) is a schematic perspective view of the body of the needle of fig. 1 inserted into the needle tube, and fig. 11 (b) is a schematic perspective view of the shank of fig. 11 (a) inserted into the needle tube.

Fig. 12 is a schematic sectional view showing a state where the needle shaft of fig. 2(a) is inserted into the needle tube.

Fig. 13 is a schematic cross-sectional view of the state where the needle shaft of fig. 8 (c) is inserted into the needle tube.

Fig. 14 is a schematic sectional view of the state where the needle shaft of fig. 10 (c) is inserted into the needle tube.

Description of reference numerals:

1 acupuncture needle

2 needle body

3 needle handles.

Detailed Description

An acupuncture needle according to an embodiment of the present invention will be described with reference to fig. 1 to 6.

A reference numeral 1 shown in fig. 1 denotes a needle, and the needle 1 includes a body 2 having a tip portion formed at a distal end thereof, and a shank 3 attached to a proximal end portion of the body 2.

The needle tip of the acupuncture needle 1 is not in the shape of a hook (hook) but in a sharp shape, and the needle body 2 is not bent in the middle but is straight, and the needle body 2 is not detachable from the needle shaft 3.

The needle body 2 is a linear body made of metal such as stainless steel, and has a needle tip portion 2a formed at the tip.

The needle body 2 has an appropriate thickness and length according to the purpose of treatment, handedness, etc. The needle body 2 has a thickness (wire diameter) of, for example, 0.10mm to 0.35mm and a length of, for example, 3mm to 150 mm.

The needle shaft 3 is made of a metal such as plastic or stainless steel, is attached to the proximal end of the needle body 2, and serves as a grip portion for gripping the acupuncture needle 1. The needle shaft 3 has an elliptical cross-sectional shape extending transversely to the longitudinal direction.

The reason why the cross-sectional shape of the needle shaft 3, which is transverse to the longitudinal direction, is elliptical is as follows.

That is, as shown in fig. 2(a) and 2(c), in comparison with the case where the dimension a of the longitudinal cross-sectional shape of the shaft 3, which is the major axis of the ellipse, is the same as the dimension a of the longitudinal cross-sectional shape of the shaft 3, which is the diameter of the perfect circle, the weight of the shaft 3 can be reduced by the portion of the shaft 3, which is the cross-sectional shape of the ellipse, which is reduced in the longitudinal cross-sectional shape, thereby achieving weight reduction, and for example, when the needle 1 is inserted into the side face of the face, the needle 1 is less likely to be bent, and the needle 1 is prevented from falling off, while the needle 1 after insertion is less likely to shake for the patient, and the feeling of discomfort for the patient can be reduced.

Further, the needles 1 can be approximated to the extent corresponding to the case where the cross-sectional shape is an ellipse (major axis a dimension — minor axis B dimension), so that a large number of needles 1 can be applied during the operation, and the grip 3 can be maintained easily even if the cross-sectional shape is an ellipse (i.e., as shown in fig. 3, even if the cross-sectional shape of the needle grip 3, which is a cross-sectional shape extending in the longitudinal direction, is reduced, the needle grip 3 can be gripped by the index finger 5 and the thumb 6.

Further, by making the cross-sectional shape elliptical, the following unique effects are obtained: the operator is not easy to perform the operation of rotating the needle shaft 3 after the puncture, and can prevent the needle body 2 having low rigidity (small) from being damaged by the rotation of the needle shaft 3.

Further, for example, as shown in fig. 4, even when the needle 1 is placed on the flat placement surface 7, since the cross-sectional shape is an ellipse, the other end of the shank 2 is separated from the placement surface 7 in the Y direction by pressing one end of the shank 3 placed on the placement surface 7 in the X direction, and the shank 3 can be easily grasped.

Further, the minor axis of the ellipse is along the short direction of the needle shaft 3, and therefore the dimension of the needle shaft 3 in the short direction can be made short and compact.

Fig. 6 is a schematic plan view showing a state in which the needles 1 are inserted into the skin 8 and the needles 1 are arranged in parallel, wherein, in a plan view, one needle shaft 3(31) of the bodies 2 arranged in parallel is separated from the other needle shaft 3(32) of the bodies arranged in parallel, and a 1 st long side (in the case where the sectional shape is an ellipse, the 1 st long side is a long axis of the ellipse) of the one needle shaft of the bodies 2 arranged in parallel is arranged substantially parallel to a 1 st long side (in the case where the sectional shape is an ellipse, the 1 st long side is a long axis of the ellipse) of the other needle shaft 3(32) of the bodies 2 arranged in parallel.

In the method of arranging the acupuncture needle 1 in which the acupuncture needle 1 is arranged in parallel by inserting the acupuncture needle 1 having the body 2 having the needle tip portion formed at the tip end and the handle 3 attached to the base end portion of the body 2 into the skin, the cross-sectional shape of the handle 3 with respect to the longitudinal direction is not limited to an ellipse, and can be applied to a case where the cross-sectional shape with respect to the longitudinal direction of the handle 3 is a rectangle, a rhombus, or the like (where the 1 st long side and the 2 nd long side are in a relationship where the length of the 1 st long side is greater than the length of the 2 nd long side), where the 1 st long side is a side where the length between one outer peripheral edge portion and the other outer peripheral edge portion is the longest in a straight line crossing the outer peripheral edge of the cross-sectional surface of the handle 3 with respect to the longitudinal direction, and the 2 nd long side is a straight line crossing the outer peripheral edge of the cross-sectional surface orthogonal to the 1 st long side, and a side having the longest length between the portion of one outer peripheral edge and the portion of the other outer peripheral edge.

As shown in fig. 1, the outer surface of the needle shaft 3 has a concave-convex shape along the longitudinal direction of the needle shaft 3, the cross-sectional shape of the convex portion 3A, which is a portion that intersects the longitudinal direction of the needle shaft 3, is an ellipse [ see fig. 2(a) ], and the cross-sectional shape of the concave portion 3B, which is a portion that intersects the longitudinal direction of the needle shaft 3, is an ellipse [ see fig. 2(a) and 2(B), a > a ', B > B' ]. That is, since the contact surface area between the needle shaft 3 and the finger is increased, the operator can easily hold the needle shaft 3, and the usability can be improved.

According to this method of arranging the acupuncture needles, in a plan view, the one shaft 3(31) of the bodies 2 arranged in parallel is separated from the other shaft 3(32) of the bodies 2 arranged in parallel, and the major axis of the ellipse of the one shaft 3(31) of the bodies 2 arranged in parallel is arranged substantially parallel to the major axis of the ellipse of the other shaft 3(32) of the bodies 2 arranged in parallel, so that the acupuncture needles 1 can be brought close to each other, and a large number of acupuncture needles 1 can be arranged to perform an operation.

In the above-described embodiment, the shaft 3 of the needle 1 of the present invention may have no uneven portion along the longitudinal direction of the shaft 3, and the cross-sectional shape of the shaft 3 that intersects the longitudinal direction may be an ellipse (not shown), but it is preferable that uneven portions be formed on the surface of the shaft 3 along the longitudinal direction of the shaft 3 and the cross-sectional shape of the shaft 3 that intersects the longitudinal direction be an ellipse, as shown in fig. 1, 2(a), and 2(B), and the present invention is not limited to an ellipse, and may be applied to a rectangle, a rhombus, or the like, in addition to an ellipse, in the case where the length a of the 1 st long side > the length B of the 2 nd long side, and the length a 'of the 1' th long side > the length B 'of the 2' th long side are in the relationship, where the 1 st long side a (length a) is in a straight line that intersects the outer peripheral edge of the cross-sectional shape of the shaft 3 that intersects the longitudinal direction of the convex portion of the shaft 3 of the needle 3, a side having the longest length between a portion of one outer peripheral edge and a portion of the other outer peripheral edge, wherein the 2 nd long side B (length B) is a side having the longest length between a portion of one outer peripheral edge and a portion of the other outer peripheral edge in a straight line that intersects the outer peripheral edge of the cross section perpendicularly to the 1 st long side a (length a); the 1 st ' long side a ' (length a ') is a side having the longest length between a portion of one outer peripheral edge and a portion of the other outer peripheral edge in a straight line crossing the outer peripheral edge of a cross section of the needle shaft 3 crossing the longitudinal direction of the recess of the needle shaft 3, and the 2 nd ' long side B ' (length B ') is a side having the longest length between a portion of one outer peripheral edge and a portion of the other outer peripheral edge in a straight line crossing the outer peripheral edge of the cross section perpendicularly to the 1 st ' long side a ' (length a ').

That is, the cross-sectional shape of the needle shaft 3, which is transverse to the longitudinal direction, may be a polygon or a polygon with chamfered corners.

For example, in the case of the rectangle shown in fig. 7, 8 (a), 8 (b), the length of the 1 st long side is C, the length of the 2 nd long side is D (C > D), the length of the 1 'st long side is C', and the length of the 2 'nd long side is D' (C '> D'). C. D, C ', D' is the longest length C of the 1 st long side. Similarly, in the case of the rectangle having chamfered corners as shown in fig. 8 (C), the longest length is the length C ″ of the 1 st long side.

In the case of the rhombus shown in fig. 10 (a) and (B), the length of the 1 st long side, which is the longer diagonal line, is a, the length of the 2 nd long side, which is the shorter diagonal line, is B (a > B), the length of the 1 'st long side is a', and the length of the 2 'nd long side is B' (a '> B'). Of A, B, A 'and B', the longest dimension is the length A of the 1 st long side. Similarly, in the case of a rhombus with chamfered corners as shown in fig. 10 (c), the longest side is the length a of the 1 st long side.

Even if the cross-sectional shape of the needle shaft 3, which is transverse to the longitudinal direction, is a polygon or a polygon having chamfered corners (for example, a rectangle having chamfered corners, a rhombus, or a rhombus having chamfered corners), the same effect as in the case where the cross-sectional shape of the needle shaft 3, which is transverse to the longitudinal direction, is an ellipse can be obtained.

When the cross-sectional shape of the needle shaft 3, which is transverse to the longitudinal direction, is an ellipse, the 1 st long side is the major axis of the ellipse, and the 2 nd long side is the minor axis of the ellipse.

Fig. 11 to 14 show a case where the needle 1 shown in fig. 1, 7, and 9 is applied to the "needle tube 9 for assisting the skin puncture by inserting the needle 1 when puncturing the skin".

That is, the needle tube 9 is provided to assist the skin puncture by inserting the needle 1 when puncturing the skin, and the needle tube 9 allows the needle 1 to move in the longitudinal direction. In a straight line crossing the outer peripheral edge of a cross section of the needle shaft 3 crossing the longitudinal direction, a 1 st long side and a 2 nd long side are in a relationship of a length of the 1 st long side > a length of the 2 nd long side, the 1 st long side being a side having the longest length between a part of one outer peripheral edge and a part of the other outer peripheral edge, and the 2 nd long side being a side having the longest length between a part of one outer peripheral edge and a part of the other outer peripheral edge in a straight line crossing the outer peripheral edge of the cross section perpendicularly to the 1 st long side.

Specifically, the cross-sectional shape of the needle shaft 3, which is transverse to the longitudinal direction, is either an ellipse or a polygon, or a polygon with chamfered corners.

When the cross-sectional shape is an ellipse, the outer shape of the cross-section of the needle tube 9, which intersects the longitudinal direction of the needle tube 9, is an ellipse, and a gap t that allows the longitudinal movement of the needle 1 is provided between the needle tube 9 and the shank 3. That is, the shape of the inner wall of the needle tube 9, which is a cross section of the needle tube 9 that intersects the longitudinal direction of the needle tube 9, and the shape of the outer wall of the needle tube 9, which is a shape that is apart from the inner wall and ensures a constant plate thickness, are elliptical, and the shape of the inner wall of the needle tube 9 has a gap t that allows the longitudinal movement of the acupuncture needle 1.

When the cross-sectional shape is a polygon or a polygon with chamfered corners, the outer shape of the cross-section of the needle tube 9, which is transverse to the longitudinal direction of the needle tube 9, is a polygon or a polygon with chamfered corners, and a gap t is provided between the needle tube 9 and the shank 3 to allow the longitudinal movement of the needle 1. That is, the inner wall shape of the needle tube 9, which is a cross section of the needle tube 9 that intersects the longitudinal direction of the needle tube 9, and the outer wall shape of the needle tube 9, which is a shape apart from the inner wall shape and secures a constant plate thickness, are polygonal shapes or polygons having chamfered corners, and the inner wall shape of the needle tube 9 has a gap t that allows the longitudinal movement of the acupuncture needle 1.

More specifically, when the cross-sectional shape of the needle shaft 3 that intersects the longitudinal direction is an ellipse, as shown in fig. 12, when the cross-sectional shape of the needle tube 9 that intersects the longitudinal direction is an ellipse, when the cross-sectional shape of the needle shaft 3 that intersects the longitudinal direction is a polygon, for example, a rectangle, and when the cross-sectional shape of the needle tube 9 that intersects the longitudinal direction is a rectangle, as shown in fig. 13, when the cross-sectional shape of the needle shaft 3 that intersects the longitudinal direction is a polygon, for example, a diamond, and when the corners are chamfered, for example, a diamond.

As shown in fig. 12, 13, and 14, in a cross section of the needle shaft 3 in the needle tube 9, which cross the longitudinal direction of the needle tube 9, the inner wall of the needle tube 9 is provided along the outer surface of the needle shaft 3 with an interval t between the outer surface of the needle shaft 3, and allows the longitudinal movement of the needle 1 in the needle tube 9. The outer wall of the needle tube 9 is provided along the inner wall of the needle tube 9. That is, the outer wall of the needle tube 9 is formed to have a shape spaced from the inner wall to secure a constant plate thickness.

Further, the shortest of the facing distances of the needle tube 9 is the 1 st facing distance M shown in fig. 12, 13, and 14, and the length of the 1 st long side, which is the longest between the portion of one outer peripheral edge and the portion of the other outer peripheral edge in the straight line crossing the outer peripheral edge of the cross section of the needle shaft 3 in the longitudinal direction, is the length a of the major axis in fig. 12, and the length a of the 1 st long side is in a relationship of > the 1 st facing distance M,

in a straight line crossing the outer peripheral edge of the longitudinal cross section of the needle shaft 3, the length of the 1 st long side having the longest length between the one outer peripheral edge portion and the other outer peripheral edge portion is a length C 'of a diagonal line in FIG. 13, and the length C' of the 1 st long side is in a relationship of > the 1 st facing distance M,

in a straight line crossing the outer peripheral edge of the longitudinal cross section of the needle shaft 3, the length of the 1 st long side having the longest length between the portion of the one outer peripheral edge and the portion of the other outer peripheral edge is the length a in fig. 14, and the length a of the 1 st long side is in a relationship of > the 1 st facing distance M.

This is because, in a cross section of the needle shaft 3 in the needle tube 9 that intersects the longitudinal direction of the needle tube 9, the outer wall of the needle tube 9 and the outer surface of the needle shaft 3 are made similar in shape to approximate the position of the needle tube 9 and the position of the needle shaft 3, and when the needle tube 9 is used to perform piercing in a concentrated arrangement as shown in fig. 6, the needle shaft 3 is positioned at a predetermined position of the needle tube 9.

The needle tube 9 is set to a size that allows the movement of the needle holder 9 in the longitudinal direction, and can assist the acupuncture needle 1 in puncturing the skin.

The needle tube 9 is used so that the body 2 of the needle 1 is not easily bent when the body 2 is inserted into the body to relieve pain, and the dimension of the needle tube 9 in the longitudinal direction is set to be several millimeters shorter than the length of the needle 1.