KR20240052527A - Injection needle having a curved cutting surface and an apparatus for manufacturing the same - Google Patents

Abstract

The present invention relates to an injection needle having a curved cutting surface, comprising a body part that forms the needle part of a syringe and includes an opening on one side, and a first cutting part cut in the longitudinal direction of the body part at the tip of the body part. And, the first cutting part may form a convex curved surface.

Description

Injection needle having a curved cutting surface and its manufacturing device {INJECTION NEEDLE HAVING A CURVED CUTTING SURFACE AND AN APPARATUS FOR MANUFACTURING THE SAME}

The disclosed content relates to an injection needle having a curved cutting surface and a manufacturing device thereof.

Unless otherwise indicated herein, the matters described in this identification are not prior art to the claims of this application, and are not admitted to be prior art by being described in this identification.

In modern society, chronic diseases are increasing, and the number of patients with renal failure complicated by these diseases is also increasing. Hemodialysis, one of the alternative treatments performed on patients with end-stage renal disease, uses a dialysis machine and dialysis membrane to remove waste products from the blood, maintain electrolyte balance in the body, and remove excess moisture. Hemodialysis is a process in which the patient's blood and dialysate composed of certain ingredients pass through the patient's blood and a dialysis solution on both sides of the dialysis membrane in opposite directions, using the concentration difference to remove waste products in the blood and applying a certain pressure to remove excess moisture. It's a method.

In order to perform hemodialysis, two dialysis paths must be created in the blood vessels of a hemodialysis patient. Generally, there are dialysis paths required for dialysis, that is, a dialysis path to extract blood from the blood vessels of a hemodialysis patient and send it to the hemodialysis machine, and a dialysis path to send blood to the hemodialysis machine. Hemodialysis is performed by puncturing each of the two dialysis channels with the thick needle of a hemodialysis cannula to bring the blood filtered from the dialysis machine back into the body of the hemodialysis patient.

For example, when performing blood purification treatment such as dialysis treatment, the patient's skin is pierced, a thick needle is pierced into the blood vessel, and blood is collected and blood is collected from the thick needle. Conventionally, the needle commonly used to extract and re-inject a large amount of blood required for hemodialysis is a sharp metal needle with a thickness of 16 gauge or 17 gauge. This puncture is performed every time a blood purification treatment is performed, but it is problematic because it causes great pain to the patient each time.

In order to solve the above problems caused by using thick, sharp metal needles in hemodialysis, development related to needles used in hemodialysis is being requested.

1. Republic of Korea Patent Publication No. 10-2017-0113547 (published on October 12, 2017)

The present invention is intended to solve the above problems, and the cutting part of the body of the needle inserted into the body forms a convex curved surface and is provided with a curved cutting surface that can significantly reduce the patient's pain when inserted into the skin and blood vessels. The purpose is to provide an injection needle and a device for manufacturing the same.

Additionally, it is not limited to the technical challenges described above, and it is obvious that other technical challenges may be derived from the description below.

The injection needle with a curved cutting surface according to the present invention forms the needle portion of the syringe and includes a body portion including an opening on one side, and a first cutting portion cut in the longitudinal direction of the body portion at the tip of the body portion, The first cutting part may form a convex curved surface.

The injection needle having a curved cutting surface according to the present invention is formed at a front end of the body portion in the longitudinal direction of the body portion rather than the first cutting portion, and further includes a second cutting portion cut at a larger inclination angle than the first cutting portion. It includes, and the second cutting part can form a convex curved surface.

A boundary between the first cutting part and the second cutting part may form a curved surface.

The injection needle having a curved cutting surface according to the present invention is formed at a tip of the body portion than the second cutting portion and further includes a third cutting portion cut in the opposite direction at a larger inclination angle than the second cutting portion, The third cutting part may form a convex curved surface.

The injection needle having a curved cutting surface according to the present invention is formed at the tip of the body portion than the first cutting portion, and further includes a fourth cutting portion cut in the opposite direction at a larger inclination angle than the first cutting portion, The fourth cutting part may form a convex curved surface.

The body portion may include a first hole through which blood passes through the opening.

The body portion may include a second hole spaced apart from the first hole by a predetermined distance on the opening side.

The edge fillets of the first and second cutting portions may have a value of 1000 or less.

In the apparatus for manufacturing an injection needle having a curved cutting surface according to the present invention, it includes a holder part for holding the body part, and a cutting and polishing part that rotates to form the first and second cutting parts, and the cutting and polishing part includes: Simultaneously with the rotation of the part, the body part is rotated by the holder part, thereby forming a convex curved surface of the first and second cutting parts.

The holder portion is formed by connecting the body portion to the first cutting portion 180 It can be rotated by less than an angle.

The cutting part rotates the body by the holder and the cutting polishing part rotates, and the cutting part is polished. The edge of the cutting surface where the body is cut by the cutting surface is rounded, so it is not sharp and can be gently inserted into the skin and blood vessels, relieving the user's pain. there is.

When inserting a blood vessel, the cutting part that forms a convex curve naturally spreads the vascular tissue and enters, so the wound is small and blood does not leak, ensuring patient usability and safety. Even if dialysis patients pierce the blood vessel with a needle 2-3 times a week, Anxiety about insertion pain is reduced.

The injection needle with a curved cutting surface according to the present invention does not generate grinding burrs that occur in conventional processing methods, so it is economical because it does not require an electrolytic polishing process and a process for cleaning harmful toxic substances. safe.

A second cutting part is formed so that it can be inserted into the body and blood vessels more easily, quickly, and with less pain, and the boundary where the first cutting part and the second cutting part meet forms a curved surface to round the sharp edges, thereby rounding the skin. It can be gently inserted into the blood vessels to relieve the user's pain.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view and a partially enlarged view of an injection needle having a curved cutting surface according to an embodiment of the disclosed subject matter.
Figure 2 is a perspective view and a partially enlarged view of a second cutting portion of an injection needle having a curved cutting surface according to an embodiment of the disclosed content.
Figure 3 is an enlarged cross-sectional view of part A of Figure 1 or Figure 2.
Figure 4 is an enlarged cross-sectional view of BB (a) and an enlarged cross-sectional view of CC (b) of Figure 2.
Figure 5 is a detailed view of a third cutting portion of an injection needle having a curved cutting surface according to an embodiment of the disclosed content.
Figure 6 is an enlarged view of a fourth cutting portion of an injection needle having a curved cutting surface according to an embodiment of the disclosed subject matter.
7 is a schematic diagram of a second hole of an injection needle having a curved cutting surface according to an embodiment of the disclosed subject matter.
Figure 8 is a schematic diagram of processing the first cutting portion of the injection needle manufacturing device having a curved cutting surface according to an embodiment of the disclosed content.
Figure 9 is a schematic diagram of processing a second cutting portion of a needle manufacturing device having a curved cutting surface according to an embodiment of the disclosed content.
Figure 10 is an example of a cutting angle and cutting depth of a needle manufacturing device having a curved cutting surface according to an embodiment of the disclosed content.
Figure 11 is a state of use of an injection needle having a curved cutting surface according to an embodiment of the disclosed content.

Hereinafter, the configuration and effects of the preferred embodiment will be examined with reference to the attached drawings. For reference, in the drawings below, each component is omitted or schematically shown for convenience and clarity, and the size of each component does not reflect the actual size. In addition, the same reference numerals refer to the same components throughout the specification, and reference numerals for the same components in individual drawings will be omitted.

Hereinafter, the injection needle 900 having a curved cutting surface according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view and a partial enlarged view of an injection needle 900 having a curved cutting surface according to an embodiment of the disclosed content, and FIG. 2 is a scanning needle 900 having a curved cutting surface according to an embodiment of the disclosed content. It is a perspective view and a partially enlarged view of the second cutting part 300 of the needle 900, and FIG. 3 is an enlarged cross-sectional view of part A of FIG. 1 or FIG. 2, and FIG. 4 is an enlarged cross-sectional view of BB (a) and CC of FIG. 2. (b), Figure 5 is a detailed view of the third cutting part 400 of the injection needle 900 having a curved cutting surface according to an embodiment of the disclosure, and Figure 6 is a detailed view of the third cutting portion 400 according to an embodiment of the disclosure. 7 is an enlarged view of the fourth cutting portion 500 of the injection needle having a curved cutting surface according to an embodiment of the disclosed content, and FIG. 7 shows the second hole ( 120), and FIG. 11 is a diagram showing a state of use of the injection needle 900 having a curved cutting surface according to an embodiment of the disclosed content.

The present invention relates to an injection needle (900) having a curved cutting surface, wherein the cutting portions (200, 300, 400, and 500) of the needle body portion (100) inserted into the body form a convex curved surface to provide contact with the skin. When inserted into a blood vessel, it can significantly reduce the user's pain. The injection needle 900 having a curved cutting surface according to an example of the present invention includes a body portion 100, a first cutting portion 200, a second cutting portion 300, a third cutting portion 400, and It may include a fourth cutting part 500, etc.

The injection needle 900 with a curved cutting surface according to the present invention forms the needle part of the syringe and includes a body portion 100 including an opening on one side, and a body portion 100 at the tip of the body portion 100. It includes a first cutting part 200 cut in the longitudinal direction, and the first cutting part 200 forms a convex curved surface, and the body part 100 is positioned at the tip of the body 100 rather than the first cutting part 200. ) is formed in the longitudinal direction and further includes a second cutting part 300 cut at a larger inclination angle than the first cutting part 200, the second cutting part 300 forms a convex curved surface, and the first cutting part 200 The boundary 250 between the portion 200 and the second cutting portion 300 forms a curved surface and is formed at the tip of the body portion 100 rather than the second cutting portion 300. It further includes a third cutting part 400 cut in the opposite direction at a large inclination angle, and the third cutting part 400 forms a convex curved surface and is located at the tip of the body 100 more than the first cutting part 200. It is formed and further includes a fourth cutting part 500 cut in the opposite direction at a larger inclination angle than the first cutting part 200, the fourth cutting part 500 forms a convex curved surface, and the body part 100 includes a first hole 110 through which blood passes on the opening side, and the body portion 100 includes a second hole 120 spaced apart from the first hole 110 by a predetermined distance on the opening side, and the first and 2 The edge fillet of the cutting portions 200 and 300 may have a value of 1000 or less.

As can be seen in the example of FIG. 1, the body portion 100 forms the body of the needle portion of the syringe, includes a hollow interior through which blood passes, and may have an opening formed on the side where it is inserted into the body. As can be seen in the example of FIG. 11, for example, the body portion 100 may be combined with the handle 20, the other side of which is coupled with the wing 10, to form the body of a needle used in dialysis, etc.

The first cutting part 200 is located at the tip of the body part 100 and is a part cut in the longitudinal direction of the body part 100, and is formed with a convex curved surface when the body part 100 is inserted into the skin and blood vessels. It can play a role in relieving pain.

As can be seen in the examples of FIG. 1 or FIG. 3, for example, the first cutting unit 200 rotates the body unit 100 by the holder unit 600, which will be described later, and the first cutting unit 200 rotates. By grinding (200), the edge portion of the cutting surface where the body portion 100 is cut is rounded, so that it is not sharp and can be gently inserted into the skin and blood vessels, making insertion easy and relieving the user's pain. As can be seen in the example of FIG. 1, for example, both left and right sides of the first cutting part 200 may be formed symmetrically.

The second cutting part 300 is formed at the front end of the body 100 rather than the first cutting part 200 in the longitudinal direction of the body 100, and is cut at a larger inclination angle than the first cutting part 200. It is formed with a convex curved surface and can serve to relieve pain when the body portion 100 is inserted into the skin and blood vessels.

As can be seen in the example of Figure 2 or Figure 3, for example, the second cutting part 300 rotates the body part 100 by the holder part 600 to be described later and the cutting and polishing part 700 to be described later. By rotating and grinding the second cutting part 300, the edge of the cutting surface where the body part 100 is cut is rounded, so it is not sharp and can be smoothly inserted into the skin and blood vessels, making insertion easy and relieving the user's pain. You can. For example, the second cutting portion 300 is formed so that it can be inserted into the body and blood vessels more easily, quickly, and with less pain. As can be seen in the example of FIG. 2 , in one example, both left and right sides of the second cutting part 300 may be formed symmetrically.

As can be seen in the examples of FIGS. 2 and 4 , for example, the boundary 250 where the first cutting part 200 and the second cutting part 300 meet may form a curved surface. As can be seen in the examples of Figures 2 and 4(b), for example, both ends of the boundary 250 where the first cutting part 200 and the second cutting part 300 meet may be formed to be rounded. .

The boundary 250 where the first cutting part 200 and the second cutting part 300 meet forms a curved surface, and the sharp edges are rounded so that it can be gently inserted into the skin and blood vessels, thereby relieving the user's pain.

The third cutting part 400 is formed at the tip of the body part 100 rather than the second cutting part 300 in a direction opposite to that of the first and second cutting parts 200 and 300, and the second cutting part 300 ) is formed as a convex curved surface with an inclination angle greater than ) and can serve to relieve pain when the body portion 100 is inserted into the skin and blood vessels.

As can be seen in the example of FIG. 5, for example, the boundary 350 where the second cutting part 300 and the third cutting part 400 meet may form a curved surface. As can be seen in the examples of FIGS. 4 and 5, for example, both ends of the boundary 350 where the second cutting part 300 and the third cutting part 400 meet are rounded as shown in Figure 4(b). can be formed.

The boundary 350 where the second cutting part 300 and the third cutting part 400 meet forms a curved surface, and the sharp edges are rounded so that it can be gently inserted into the skin and blood vessels, thereby relieving the user's pain.

As can be seen in the examples of FIGS. 3 to 5, for example, the third cutting unit 400 rotates the body portion 100 by the holder portion 600, which will be described later, and the cutting and polishing portion 700, which will be described later, By rotating and grinding the third cutting part 400, the edge of the cutting surface where the body part 100 is cut is rounded, so it is not sharp and can be smoothly inserted into the skin and blood vessels, making insertion easy and relieving the user's pain. You can.

As can be seen in the example of FIG. 5, the third cutting part 400 is formed on the opposite side to the first and second cutting parts 200 and 300 and the inclination angle is larger because the body part 100 This is to prevent this because the tip of the device may bend instead of being inserted in the desired direction when inserted into the skin. In other words, if the first and second cutting parts 200 and 300 are configured for insertion so that they can be easily inserted into the skin, the third cutting part 400 does not bend the body part 100 and moves in the direction desired by the operator. It can be said to be a configuration for straight-line insertion.

The fourth cutting part 500 is formed at the tip of the body 100 in a direction opposite to that of the first cutting part 200, and has a larger inclination angle than the first cutting part 200. It is formed with a convex curved surface and can serve to relieve pain when the body portion 100 is inserted into the skin and blood vessels.

As can be seen in the example of FIG. 6, for example, the boundary 550 where the first cutting part 200 and the fourth cutting part 500 meet may form a curved surface. As can be seen in the examples of FIGS. 4 and 6, for example, both ends of the boundary 550 where the first cutting part 200 and the fourth cutting part 500 meet are rounded as shown in Figure 4(b). can be formed.

The boundary 550 where the first cutting part 200 and the fourth cutting part 500 meet forms a curved surface, and the sharp edges are rounded so that it can be gently inserted into the skin and blood vessels, thereby relieving the user's pain.

As can be seen from the examples of FIG. 3 or FIG. 6 , for example, the fourth cutting unit 500 rotates the body unit 100 by the holder unit 600, which will be described later, and the cutting and polishing unit 700, which will be described later, By rotating and grinding the fourth cutting part 500, the edge of the cutting surface where the body part 100 is cut is rounded, so it is not sharp and can be smoothly inserted into the skin and blood vessels, making insertion easy and relieving the user's pain. You can.

As can be seen in the example of FIG. 6, the reason why the fourth cutting part 500 is formed on the opposite side to the first cutting part 200 and the inclination angle is larger is because the tip of the body part 100 touches the skin. This is to prevent this because it may bend when inserted without being inserted in the desired direction. In other words, if the first cutting part 200 is configured for insertability so that it can be easily inserted into the skin, the fourth cutting part 500 is designed to be straight so that the body part 100 is not bent and can be inserted in the direction desired by the operator. It can be said to be a configuration for.

As can be seen in the example of FIG. 1, the first hole 110 is a hole formed on the opening side of the body portion 100 and can serve to allow blood to pass more smoothly.

The second hole 120 is formed at a predetermined distance from the first hole 110, and can serve to allow blood to pass more smoothly. As can be seen in the example of FIG. 7, for example, the second hole 120 is formed back and forth in the longitudinal direction of the first hole 110 and the body portion 100, or is formed left and right next to the first hole 110. It may be formed as

For example, the edges of the first and second cutting parts 200 and 300 may be manufactured to have a fillet value of 1000 or less so that there are no sharp parts.

The present invention relates to an injection needle (900) having a curved cutting surface, wherein the cutting portions (200, 300, 400, and 500) of the needle body portion (100) inserted into the body form a convex curved surface and the cutting portion ( The border portions (250, 350, 550) between 200, 300, 400, and 500 are also rounded to provide an injection needle with a curved cutting surface that can significantly reduce the user's pain when inserted into the skin and blood vessels. 900).

The cutting parts (200, 300, 400, 500) are polished by rotating the body part 100 by the holder part 600 and rotating the cutting polishing part 700. The edge portion of the cutting surface where the body portion 100 is cut is rounded, so it is not sharp and can be gently inserted into the skin and blood vessels, thereby relieving the user's pain. When inserting a blood vessel, the cutting parts (200, 300, 400, 500) that form a convex curve naturally spread the vascular tissue and enter, so the wound is small and blood does not leak, ensuring usability and safety for patients. It is mainly used by dialysis patients. Anxiety about insertion pain is reduced even if you pierce a blood vessel with a needle 2-3 times. The present invention is economical and safe because it does not generate grinding waste (burr) that occurs in conventional processing methods, so there is no need for an electrolytic polishing process and a process for cleaning harmful toxic substances. The second cutting part 300 is formed so that it can be inserted more easily, quickly, and with less pain into the body and blood vessels, and the boundary 250 where the first cutting part 200 and the second cutting part 300 meet is formed. The part is curved and the sharp edges are rounded, allowing it to be gently inserted into the skin and blood vessels, relieving the user's pain.

Hereinafter, an apparatus for manufacturing an injection needle 900 having a curved cutting surface according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 8 is a schematic diagram of processing of the first cutting portion 200 of the needle manufacturing apparatus 1000 having a curved cutting surface according to an embodiment of the disclosure, and FIG. 9 is a schematic diagram of the processing of the first cutting portion 200 according to an embodiment of the disclosure. It is a schematic diagram of processing the second cutting part 300 of the needle manufacturing apparatus 1000 having a cutting surface, and Figure 10 shows the needle manufacturing apparatus 1000 having a curved cutting surface according to an embodiment of the disclosed content. ) is an example of the cutting angle and cutting depth.

The needle manufacturing apparatus 1000 having a curved cutting surface according to an example of the present invention includes a body portion 100, a first cutting portion 200, a second cutting portion 300, and a third cutting portion 400. , a fourth cutting part 500, a holder part 600, and a cutting and polishing part 700, etc., and may include a body part 100, a first cutting part 200, and a second cutting part 300. , the third cutting part 400, and the fourth cutting part 500, the description of the injection needle 900 having a curved cutting surface according to the embodiment of the present invention can be inferred and applied.

The needle manufacturing device 1000 with a curved cutting surface according to the present invention includes a holder part 600 that holds the body part 100, and a rotating needle to form first and second cutting parts 200 and 300. It includes a cutting and polishing unit 700 that rotates the cutting and polishing unit 700 and simultaneously rotates the body 100 with the holder unit 600, and the convex curved surfaces of the first and second cutting units 200 and 300 Can be formed, and the holder portion 600 connects the body portion 100 to the first cutting portion 200 and 180. It can be rotated by less than an angle.

The holder portion 600 holds the body portion 100 and may be coupled to the body portion 100 to rotate the body portion 100. As can be seen in the examples of FIGS. 8 to 10, for example, the holder portion 600 is combined with the body portion 100 to adjust the cutting angle and cutting depth of the body portion 100 to form a cutting and polishing portion (described later). When 700 rotates and cuts the body portion 100, the cutting portions 200, 300, 400, and 500 including a convex curved surface can be processed by rotating the body portion 100.

As can be seen in the example of FIG. 10, for example, the holder portion 600 can be processed by tilting the body portion 100 at a required angle and pushing it as close to the required depth as the cutting and polishing portion 700, which will be described later.

For example, the holder portion 600 connects the body portion 100 to the first cutting portion 200 and 180. An injection needle 900 with a curved cutting surface can be manufactured by rotating it at a small angle.

The cutting and polishing unit 700 rotates to form cutting units 200, 300, 400, and 500. It rotates together with the holder unit 600, which rotates the body 100, to cut the body 100. It may serve to form cutting parts (200, 300, 400, 500) having a convex curved surface. As can be seen in the examples of FIGS. 8 to 10, for example, the cutting and polishing unit 700 rotates the cutting and polishing unit 700 at the same time as the holder unit 600 rotates the body 100 to form the body ( 100) and the cutting and polishing unit 700 may rotate together to form a convex curved surface of the cutting units 200, 300, 400, and 500.

Although preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the embodiments described in this specification and the configuration shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent the entire technical idea of the present invention. Since this is not the case, it should be understood that there may be various equivalents and modifications that can replace them at the time of filing this application. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the claims described later rather than the detailed description, and the meaning and scope of the claims and their All changes or modified forms derived from the equivalent concept should be construed as falling within the scope of the present invention.

10: wings
20: handle
100: body part
110: 1st hole
120: 2nd hole
200: first cutting part
300: second cutting part
400: Third cutting part
500: Fourth cutting part
600: Holder part
700: Cutting and polishing unit
900: Injection needle with a curved cutting surface
1000: Injection needle manufacturing device with a curved cutting surface

Claims (10)

A body portion that forms the needle portion of a syringe and includes an opening on one side; and
It includes a first cutting portion cut in the longitudinal direction of the body portion at the tip of the body portion,
The first cutting part is an injection needle having a curved cutting surface that forms a convex curved surface.
In claim 1,
It further includes; a second cutting portion formed at a tip of the body portion in the longitudinal direction of the body portion and cut at a larger inclination angle than the first cutting portion;
The second cutting part is an injection needle having a curved cutting surface that forms a convex curved surface.
In claim 2,
An injection needle having a curved cutting surface where the boundary between the first cutting part and the second cutting part forms a curved surface.
In claim 2,
It further includes a third cutting portion formed at a tip of the body portion than the second cutting portion and cut in an opposite direction at a larger inclination angle than the second cutting portion,
The third cutting part is an injection needle having a curved cutting surface that forms a convex curved surface.
In claim 1,
It further includes; a fourth cutting portion formed at the tip of the body portion than the first cutting portion and cut in an opposite direction at a greater inclination angle than the first cutting portion;
The fourth cutting part is an injection needle having a curved cutting surface that forms a convex curved surface.
In claim 1,
The body portion is an injection needle having a curved cutting surface including a first hole through which blood passes through the opening.
In claim 6,
The body portion is an injection needle having a curved cutting surface including a second hole spaced apart from the first hole by a predetermined distance on the opening side.
In claim 2,
An injection needle having a curved cutting surface in which edge fillets of the first and second cutting portions have a value of 1000 or less.
In the device for manufacturing an injection needle having a curved cutting surface according to claim 2,
A holder portion holding the body portion; and
It includes a cutting and polishing unit that rotates and forms the first and second cutting units,
An apparatus for manufacturing an injection needle having a curved cutting surface that rotates the body part with the holder part simultaneously with the rotation of the cutting and polishing part and forms a convex curved surface of the first and second cutting parts.
In claim 9,
The holder portion is formed by connecting the body portion to the first cutting portion 180 A device for manufacturing injection needles having a curved cutting surface that rotates at a small angle.

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