WO2016195132A1

WO2016195132A1 - Medical injection needle and manufacturing method therefor

Info

Publication number: WO2016195132A1
Application number: PCT/KR2015/005559
Authority: WO
Inventors: 김경균
Original assignee: (주)리젠바이오참
Priority date: 2015-06-03
Filing date: 2015-06-03
Publication date: 2016-12-08
Also published as: CN106456211B; CN106456211A

Abstract

The present invention relates to a medical injection needle and a manufacturing method therefor. The medical injection needle of the present invention is characterized in that the inside, made of a metal material, is formed as a hollow cylindrical tube; at one end of the tube, a cutting part (10) consisting of an inclined portion (11) and a horizontal portion (12) is formed wherein the inclined portion is downwardly inclined at a certain angle from the upper end on the side and has a lower end positioned lower than the central axis (a) of the tube, and the horizontal portion is connected with the front end of the inclined portion (11) and is formed parallel to the central axis (a) of the tube; at one end of the tube, a flat round part (20) having a convexly rounded shape on the plane is formed; and the shape of the side cross-sectional area of the horizontal portion (12) consists of a protrusion part (14) and a side round part (16), wherein the protrusion part has one front end connected with the front end of the lower inner circumferential surface (13) of the tube, is formed vertically upward from the front end of the lower inner circumferential surface (13) of the tube, and has the other front end connected with the horizontal portion (12); and the side round part has one side connected to the front end of the horizontal portion (12) and has the other side connected with the lower surface (15) of the tube while forming a curve downwardly. According to the present invention, the end of the injection needle takes a rounded shape when seen on the plane and takes a rounded shape in the upward direction from the bottom when seen from the side, and so a pointed portion is not formed and thereby damage to muscles, nerves, and blood vessels does not occur when inserted under the skin. Due to formation of the cutting part consisting of the inclined portion inclined at a certain angle from one side of the upper section when seen from the side, and the horizontal portion in parallel to the direction of the central axis, thread can be smoothly inserted while naturally hung in the cutting part during injection under the skin while a part of the thread is inserted. Particularly, due to formation of the fine protrusion at the end of the injection needle, even though the thread is not a thread provided with a twisted part, the thread is naturally twisted, bent and inserted during insertion of the injection needle under the skin, thereby enabling an exact surgical procedure. In addition, the injection needle is manufactured through sanding finishing following a cutting process of the cutting part after the end of a hollow tube is welded while a rod is placed thereon, and thereby the thread is naturally hung while the inner circumferential surface of the injection needle becomes smooth.

Description

Medical needles and preparation method thereof

The present invention relates to a medical needle and a method for manufacturing the same, in particular, the end is formed in a round shape to prevent damage to the subcutaneous tissue, and to form a jaw at the end of the needle to insert the needle into the skin tissue during the treatment process It relates to a medical needle and a method for manufacturing the same, so that it can be inserted smoothly.

A general medical needle is formed in the form of a tube for the drug to pass through the inside for injecting the drug subcutaneously, and in the form of a pointed end for a smooth injection.

As a technique related to such a medical needle, the "medical needle" (Korean Patent Publication No. 10-0672875, Patent Document 1) has a pointed end portion of a conventional medical needle, and the needle penetrates the tissue to a target site in the human body and enters the tissue. In order to improve the problem of leaving a wound, an example in which the end of the needle is rounded is disclosed.

On the other hand, recently, after inserting a part of the thread inserted into the needle under the skin for the purpose of preventing wrinkles, muscle regeneration, and regeneration of the skin tissue mainly in dermatology and plastic surgery, the thread remains in the subcutaneous and inserted only into the needle Ejection treatment like the situation is increasing.

At this time, as a technology related to the needle to be used, looking at the contents disclosed in the "thread inserting device for anti-wrinkle molding" (Korea Patent Publication No. 10-1261175, Patent Document 2) This needle is also empty to pass the suture inside It is made in the form of a tube and is inserted through the skin so that the tip is made in a pointed form.

However, the needle also has a pointed tip shape, there was a problem that damage the muscle, tissue, blood vessels in the insertion process of the needle.

The needle applied in Patent Literature 1 can be applied to the needle for inserting the thread of Patent Literature 2, but in this case, the needle of Patent Literature 1 takes a rounded shape on a flat surface and a sharply tapered shape on a side surface. It takes a straight, pointed knife-like shape and causes more tissue damage during insertion.

In addition, the needle for injection of the drug is unlikely to flow back due to the pressure of the syringe, but the needle for inserting the thread, such as a therapy, the needle should be inserted subcutaneously with the needle during the insertion process, In a technique such as Patent Document 1, the thread slips in the insertion process, thus making it difficult to accurately perform the procedure.

On the other hand, another technique related to the needle for inserting the needle subcutaneously with the needle "scan needle closure device" (Korean Patent Laid-Open Patent Publication No. 0166449, Patent Document 3) in a hole or cut a hole on one side of the outer peripheral surface of the needle By forming a jaw through the middle of the thread was caught so that it can be inserted smoothly.

However, when the hole is punched on the surface of the tubular needle having a diameter of 2 to 3 mm by a punching method or the like, the inner circumferential surface partially protrudes toward the center side by being pressed by the perforation, causing scratches on the thread inserted into the needle and moving. It may cause damage or breakage.

In addition, forming a jaw at the tip of the needle is also very difficult. Furthermore, when blood vessels, nerves, and muscles of the human tissue are caught in the jaw portion during insertion of the needle subcutaneously, the blood vessels, nerves, and muscles are greatly damaged, The cut will have to pay special attention to the procedure.

The medical needle of the present invention and a method for manufacturing the same are intended to solve the problems occurring in the prior art as described above, in which the end is rounded in a planar view, and the rounded shape in an upward direction from the bottom in a side view. To avoid the formation of pointed parts to avoid damage to the muscles, nerves, blood vessels during subcutaneous insertion.

In addition, when viewed from the side, the inclined portion is inclined at an angle from the upper side and the incision is formed in a horizontal portion parallel to the direction of the central axis, so that the thread is naturally inserted through the incision during subcutaneous injection while a portion of the thread is inserted. In particular, even when the needle is formed to have a fine hooking jaw at the end of the needle is not part of the thread provided to be inserted under the needle subcutaneously bent and inserted into the thread is to be inserted into the correct procedure is possible to be possible.

In particular, the manufacturing process by cutting the incision after the welding process while putting the rod to the end of the hollow tube during manufacture to be made in the sanding finish, so that the needle can be made naturally while the inner peripheral surface of the needle is smooth.

In order to solve the above problems, the medical needle of the present invention consists of a hollow cylindrical tube of metal material, and one end of the tube is formed to be inclined downward at an angle from the top on the side, but the bottom of the tube is the center of the tube. An incision made of an inclined portion 11 positioned below the shaft a and a horizontal portion 12 connected to the distal end of the inclined portion 11 and parallel to the central axis a of the tube. A portion 10 is formed, and one end of the tubular body is formed with a planar round portion 20 that is convexly rounded on a flat surface, and the side cross-sectional shape of the horizontal portion 12 has one side tip. It is connected to the front end of the lower inner peripheral surface 13 of the tubular body, and is formed vertically upward from the front end of the lower inner peripheral surface 13 of the tubular body, the other end is connected to the horizontal portion 12 Hanging jaw portion 14 is formed, one side is connected to the front end of the horizontal portion 12, the other side is formed a side rounded portion 16 is connected to the bottom surface 15 while forming a curved downward It is characterized by being.

Or, the inside of the metal material is made of an empty cylindrical tube, the inclined portion 11 is formed to be inclined downward at a predetermined angle from the upper side on the lower side is located below the central axis (a) of the tube, and A tubular portion (100) connected to the tip of the inclined portion (11) and having a cutout portion (10) formed of a horizontal portion (12) formed in parallel with the central axis (a) of the tubular body; It is formed integrally connected to the front end of the tubular portion 100, the one end is a planar round portion 20 to form a convexly rounded shape on the plane, and one end is the lower inner peripheral surface of the tubular portion 100 ( 13) It is connected to the tip, and is formed vertically upward from the tip of the lower inner peripheral surface 13, the other end is connected to the latching portion 14 and the one end is connected to the latching portion 14 ) Is connected to the upper portion, the auxiliary horizontal portion 17 to form a straight line with the horizontal portion 12, one end is connected to the auxiliary horizontal portion 17, the other side is curved downward while the tubular portion It is configured to include; a tip tip (200) consisting of a side round portion 16 is connected to the tip bottom portion (100).

At this time, the bottom surface is integrally formed on the upper surface of the auxiliary horizontal portion 17, the upper surface has a shape rounded inclined upwardly from the tip of the auxiliary horizontal portion 17, one side is the locking jaw portion (14) Auxiliary tip portion 300 to form a straight line; characterized in that is further formed.

In addition, the method of manufacturing a medical needle of the present invention, the stick fixing step of fixing the disc-shaped stick (210), the inside of which is blocked at the front end of the hollow tube 110; The stick 210 forms an incision 10 cut from one side of the upper surface of the tubular body 110 to which the stick 210 is integrally fixed to the middle one side of the stick 210. It is formed to be inclined downward, but the lower end is inclined portion 11 is located below the central axis (a) of the tube body 110, and is connected to the tip of the inclined portion 11, the center of the tube body 110 The horizontal portion 12 is formed in parallel with the axis (a), and the horizontal portion 12 in a straight line and the auxiliary horizontal portion 17 is formed to the tip of the stick 210, the auxiliary horizontal portion ( A cutting step of forming a locking step 14 forming a step with the lower inner circumferential surface 13 of the tubular body 110 at the point where the 17 and the horizontal portion 12 meet; A side cutting step of sanding or cutting the bottom of the stick 210 to form a curved side round part 16 connecting the bottom of the tubular body 110 from the tip of the auxiliary horizontal part 17 on the side; And a planar cutting step of sanding or cutting the end of the stick 210 to form a planar rounded portion 20 having a convexly rounded shape at the tip of the stick 210 on a plane.

According to the present invention, the end portion is rounded when viewed in a plan view, and the rounded shape is raised from the bottom when viewed from the side, so that a sharp portion is not formed so that damage to muscles, nerves, and blood vessels occurs during subcutaneous insertion. Will not be.

In addition, when viewed from the side, the inclined portion is inclined at an angle from the upper side and the incision is formed in a horizontal portion parallel to the direction of the central axis, so that the thread is naturally inserted through the incision during subcutaneous injection while a portion of the thread is inserted. Particularly, even when the needle is formed to be bent at the end of the needle, especially when a minute hook is formed to be bent, the thread is naturally bent while being inserted into the needle when the needle is inserted subcutaneously, thereby enabling accurate procedures.

In particular, during the manufacturing process by welding the rod end to the end of the hollow tube after the cutting process is manufactured by the sanding finish, the needle inner circumferential surface is a smooth state while the thread can be naturally caught.

Figure 1 is a side cross-sectional view showing a medical needle of the present invention from the side.

2 is a plan view of a medical needle of the present invention.

3 is a partial perspective view of the medical needle of the present invention.

Figure 4 is an end side side view of the medical needle of the present invention.

5 is an end side cross-sectional view of the medical needle of the present invention.

Figure 6 is a side cross-sectional view showing another embodiment of the present invention medical needle.

7 is a cross-sectional view sequentially showing a method for manufacturing a medical needle of the present invention.

Hereinafter, the medical needle of the present invention and its manufacturing method will be described in detail with reference to the accompanying drawings.

Medical needles of the present invention, as shown in Figures 1 to 3 consists of a cylindrical tube hollow of a metal material.

In addition, as shown in Figures 1 and 3, one end of the tubular body is inclined downward at a predetermined angle from the top on the side, the inclined portion 11 is to be located below the central axis (a) of the tubular body And it is connected to the tip of the inclined portion 11, characterized in that the incision portion 10 consisting of a horizontal portion 12 is formed in parallel with the central axis (a) of the tubular body.

In addition, as shown in the plan view of Figure 2, one side end of the tubular body is formed with a planar round portion 20 is formed convexly rounded on the plane.

On the other hand, as shown in Figure 1, the side cross-sectional shape of the horizontal portion 12, one end is connected to the tip of the lower inner peripheral surface 13 of the tubular body, and formed vertically upward from the tip of the lower inner peripheral surface 13 of the tubular body. The other end is formed with a latching jaw portion 14 connected to the horizontal portion 12, one side is connected to the front end of the horizontal portion 12, the other side is curved downward while the tube bottom The side round portion 16 is connected to the (15) is characterized in that it is formed.

The medical needle of the present invention having the above-described configuration may be formed by processing an integral metal tube through cutting, sanding, etc., More preferably, the disk-shaped stick is welded to the tubular body to be integrated, and then cutting, sanding, etc. It is preferable to form by processing.

Specifically, the inside of the metal material is made of an empty cylindrical tube, the inclined portion 11 is formed to be inclined downward at a predetermined angle from the top on the side, but the lower end is located below the central axis (a) of the tube, A tubular portion (100) connected to the tip of the inclined portion (11) and having a cutout portion (10) formed of a horizontal portion (12) formed in parallel with the central axis (a) of the tubular body;

It is formed integrally connected to the front end of the tubular portion 100, the one end is a planar round portion 20 to form a convexly rounded shape on the plane, and one end is the lower inner peripheral surface of the tubular portion 100 ( 13) It is connected to the tip, and is formed vertically upward from the tip of the lower inner peripheral surface 13, the other end is connected to the latching portion 14 and the one end is connected to the latching portion 14 ) Is connected to the upper portion, the auxiliary horizontal portion 17 to form a straight line with the horizontal portion 12, one end is connected to the auxiliary horizontal portion 17, the other side is curved downward while the tubular portion 100 is a tip tip 200 portion consisting of a side round portion 16 is connected to the tip bottom portion is configured to include.

In addition to the above embodiment, as shown in Figure 6, the bottom is integrally formed on the upper surface of the auxiliary horizontal portion 17, the upper surface is rounded inclined upwardly from the tip of the auxiliary horizontal portion (17) To take a shape, one side of the auxiliary tip portion 300 to form a line with the engaging jaw portion 14; may be further formed.

The auxiliary team unit 300 may be formed by selectively adjusting its height so that the insertion of the yarn can be easily inserted into the subcutaneous body while being easily bent and smoothly inserted according to the pipe inner diameter and the diameter of the yarn.

In addition, the auxiliary tip 300 may be formed according to the degree of cutting in the side cutting step described later.

The method of manufacturing a medical needle of the present invention is composed of a stick fixing step, cutting step, side cutting step, plane cutting step.

1. Stick Fixing Step

Stick fixing step is integrally fixed to the disc-shaped stick 210, the inside of which is blocked at the front end of the hollow tube 110, as shown in FIG.

At this time, the tubular body 110 and the stick 210 are preferably formed of the same metal material, and the fixing method is preferably fixed by welding.

2. Cutting step

The stick 210 forms an incision 10 cut from an upper surface of one side of the tubular body 110 to which the stick 210 is integrally fixed.

At this time, the cutout 10 is formed to be inclined downward at a predetermined angle from the top on the side, but the bottom 11 is inclined portion 11 is located below the central axis (a) of the tubular body 110, the inclined portion (11) connected to the distal end, the horizontal portion 12 is formed in parallel with the central axis (a) of the tubular body 110, in a line with the horizontal portion 12 is formed to the tip of the stick 210 It is made of the auxiliary horizontal portion 17, and the locking step portion 14 forming a step with the lower inner peripheral surface 13 of the tubular body 110 is formed at the point where the auxiliary horizontal portion 17 and the horizontal portion 12 meet. .

The cutting is performed using various known cutting machines such as a laser cutting machine.

3. Side cutting step

Sanding or cutting the bottom of the stick 210 to form a curved side-rounded portion 16 connecting the bottom of the tubular body 110 from the tip of the auxiliary horizontal portion 17 on the side.

4. Plane cutting step

An end of the stick 210 is sanded or cut to form a planar round part 20 having a convexly rounded shape at the tip of the stick 210.

After the above process, the weld 211 formed by welding is neatly finished by sanding or the like.

Hereinafter, the operation of the present invention having the configuration as described above.

First, the medical needle of the present invention is a flat round end portion 20 is formed in the planar end, the side round portion 16 is formed in the lower end when viewed from the side bar, the muscle in the process of being inserted subcutaneously, It will not damage blood vessels and nerve tissue.

In particular, the cutout portion 10 formed of the inclined portion 11 and the horizontal portion 12 starts from a point spaced apart from the tip, and through the cutout portion 10, the thread 1 partially discharged through the pipeline. One side can take it smoothly.

In other words, in the state in which the yarns are bent or bent in the drawing, the portions adjacent to each other are positioned through the cutout 10, and the rolling can be prevented.

Particularly, in the present invention, the horizontal portion 12 and the auxiliary horizontal portion 17 are located at a position lower than the central axis a of the tubular portion 100 on the side surface, and vertically upward from the tip of the lower inner circumferential surface 13. Due to the formation of the locking jaw portion 14 formed, the end of the thread 1 is bent while being caught by the locking jaw portion 14 when the seal 1 is inserted into the needle, thereby inserting the needle under the skin. When the thread is less pushed, it can be inserted along the needle smoothly.

If the height of the horizontal portion 12 or the auxiliary horizontal portion 17 is higher than the central axis (a), the height of the locking jaw portion 14 naturally increases, and the jaw is inserted when the seal 1 is inserted. Too high a difficulty in the insertion of the thread 1, as well as the end width of the needle is widened to the maximum in the plane, it is difficult to insert the needle.

That is, as the position of the horizontal portion 12 or the auxiliary horizontal portion 17 is set to a position lower than the central axis a, the width of the flat round portion 20 is reduced, so that the needle is relatively smooth despite the flat shape. It is to be inserted subcutaneously, and as the locking jaw portion 14 forms a jaw of a fine height, the thread 1 is smoothly inserted and bent, and the phenomenon that the thread 1 is pushed when the needle is inserted subcutaneously is also caused. It can be prevented.

Particularly, the inner circumferential surface of the tubular part 100 can maintain a smooth shape in the thread 1 by acting to fix the thread 1 through the cutting and sanding process after welding through the stick 210. It will be less damaging.

Although the medical needle of the present invention may be installed and used in a syringe for injecting a general drug, it will be most effective to apply it to a procedure of inserting a thread under the skin, such as a therapy.

1: thread 10: incision

11: inclined portion 12: horizontal portion

13: inner peripheral surface 14: locking jaw

15: bottom 16: side round part

17: auxiliary horizontal portion 20: flat round portion

100: tube 110: tube

200: tip tip portion 210: stick

211: weld 300: auxiliary tip

a: central axis

Claims

In medical needles,

The inside of the metal consists of a hollow cylindrical tube,

One end of the tubular body is inclined downward at a predetermined angle from the upper end on the side, but the lower end is inclined portion 11 is located below the central axis (a) of the tubular body, the inclined portion 11 is connected to the tip Is formed, the incision portion 10 is formed of a horizontal portion 12 made in parallel with the central axis (a) of the tube,

One end of the tubular body is formed with a planar round part 20 which is convexly rounded on a plane,

The side cross-sectional shape of the horizontal portion 12, one end is connected to the tip of the lower inner peripheral surface 13 of the tubular body, is formed vertically upward from the tip of the lower inner peripheral surface 13 of the tubular body, the other end is the horizontal A locking jaw portion 14 connected to the portion 12 is formed, and one side is connected to the front end of the horizontal portion 12, and the other side is curved downward and connected to the bottom surface 15 of the tubular body. Medical needles, characterized in that the round portion 16 is formed.
In medical needles,

An inclined portion 11 formed of a hollow cylindrical tube having a metallic material, and inclined downward at an angle from an upper end thereof on a side thereof, and having a lower end positioned below the central axis a of the tube and the inclined portion. (11) a tubular portion (100) connected to the tip and formed with a cutout (10) consisting of a horizontal portion (12) formed in parallel with the central axis (a) of the tubular body;

It is formed integrally connected to the front end of the tubular portion 100, the one end is a planar round portion 20 to form a convexly rounded shape on the plane, and one end is the lower inner peripheral surface of the tubular portion 100 ( 13) It is connected to the tip, and is formed vertically upward from the tip of the lower inner peripheral surface 13, the other end is connected to the latching portion 14 and the one end is connected to the latching portion 14 ) Is connected to the upper portion, the auxiliary horizontal portion 17 to form a straight line with the horizontal portion 12, one end is connected to the auxiliary horizontal portion 17, the other side is curved downward while the tubular portion Medical needles comprising a; tip tip (200) consisting of a side round portion 16 is connected to the tip bottom.
The method of claim 2,

A bottom surface is formed integrally with the upper surface of the auxiliary horizontal portion 17, the upper surface has a rounded shape inclined upwardly from the tip of the auxiliary horizontal portion 17, one side is in line with the locking jaw portion (14) Auxiliary tip portion 300 forming a; medical needle, characterized in that is further formed.
In the method for producing a medical needle,

A stick fixing step of integrally fixing a disc-shaped stick 210 whose interior is blocked at the front end of the hollow body 110;

The stick 210 forms an incision 10 cut from one side of the upper surface of the tubular body 110 to which the stick 210 is integrally fixed to the middle one side of the stick 210. It is formed to be inclined downward, but the lower end is inclined portion 11 is located below the central axis (a) of the tube body 110, and is connected to the tip of the inclined portion 11, the center of the tube body 110 The horizontal portion 12 is formed in parallel with the axis (a), and the horizontal portion 12 in a straight line and the auxiliary horizontal portion 17 is formed to the tip of the stick 210, the auxiliary horizontal portion ( A cutting step of forming a locking step 14 forming a step with the lower inner circumferential surface 13 of the tubular body 110 at the point where the 17 and the horizontal portion 12 meet;

A side cutting step of sanding or cutting the bottom of the stick 210 to form a curved side round part 16 connecting the bottom of the tubular body 110 from the tip of the auxiliary horizontal part 17 on the side;

And a planar cutting step of sanding or cutting the end of the stick (210) to form a planar round portion (20) convexly rounded at the tip of the stick (210) on a plane.