KR102352783B1 - Medical needle manufacturing method - Google Patents

Abstract

The present invention relates to a medical needle manufacturing method. According to an embodiment of the present invention, the method comprises: a first processing step of processing one end of a cylindrical bar made of metal material; a post-processing step of post-processing the processed cylindrical bar; a second processing step of bending or polishing the other end of the post-processed cylindrical bar; and a coupling step of coupling a bended part with a handle including a coupling unit. The post-processing step comprises an electrolytic polishing process, and a diameter of the polished other end is greater than an inner diameter of the coupling part. According to the present invention, a precise needle can be manufactured through polishing and bending processes.

Description

Medical needle manufacturing method {MEDICAL NEEDLE MANUFACTURING METHOD}

The present invention relates to a method for manufacturing a medical needle, and more particularly, to a method for manufacturing a medical needle for manufacturing a precise needle through a grinding and bending process.

In general, a medical needle is a medical device used for various medical procedures.

For example, it is used for various medical procedures such as injecting chemical solutions such as botox and fillers into the body, inserting medical threads (sutures, biosun) for cosmetic surgery including wrinkle removal, and other medical procedures such as blood collection.

Such a conventional medical needle is to form a pointed insert having a cut surface by obliquely cutting the tip of the tubular body part.

In such a conventional medical needle, when the insertion part is inserted into the body, the insertion part is inserted into the skin. It causes severe pain and severe bruising at the insertion site of the needle as it causes damage such as tearing or cutting of skin nerves and muscles. there was

Therefore, a precise needle that can be accurately inserted into the insertion position and does not touch the surrounding important tissues is needed.

On the other hand, as a prior art related to the present invention, there is Korean Patent Publication No. 10-2015-0069378 (published on June 23, 2015) and the like.

The present invention was derived to solve the above problems, and to provide a method for manufacturing a medical needle for manufacturing a precise needle through a grinding and bending process.

According to an embodiment of the present invention, a first processing step of processing one end of the cylindrical bar formed of a metal material; a post-processing step of post-processing the processed cylindrical bar; a second processing step of bending or grinding the other end of the post-processed cylindrical bar; and a coupling step of coupling the bent part with a handle including a coupling part; wherein the post-processing step includes an electrolytic polishing process, and polishing so that the diameter of the polished other end is greater than the inner diameter of the coupling part do.

The bending includes one or more grooves, each groove is a first holder that is spaced apart from each other at a reference interval, is installed to be spaced apart from the first holder, and the groove is formed at the same position as the groove of the first holder. and a jig including a fixing member for fixing the cylindrical bar by bolting to the second holder and the first holder or the second holder.

The groove of the first holder is formed in a semi-cylindrical shape, and when the first holder is virtually divided into three equal parts, it is formed to have a certain inclination from each of the 1/3 point and the 2/3 point to the 1/2 point. and the groove of the second holder is formed in a 'V' shape, and may include bolt grooves for fixing the fixing member to the lower right and upper ends of the first holder.

In the bending step, holding the cut raw material, a work bench including a groove according to the designed specification, a pressure member installed on the upper part of the work bench, and applying pressure to the raw material through vertical movement, the pressure is applied to the raw material After being applied, the cut raw material is bent using a press machine including a plurality of support members for supporting the outer side of the raw material and fixing the raw material, and the support member has the same shape as the outer side of the raw material It includes a tip and a support for supporting the tip, the outside of the tip includes a cooling tank containing a cooling material reacting with water, and the outside of the support includes an aqueous solution tank containing an aqueous solution for generating water and increasing the temperature a heating device, which connects the cooling tank and the aqueous solution tank, and includes a pipe for sending water to the cooling tank, wherein the aqueous solution contains 2 parts by weight of aminosilanized aluminum hydroxide, 10 parts by weight of a bisphenol A type epoxy resin, and poly ( oxypropylene) is composed of 3 parts by weight of diamine, the aqueous solution generates water when the internal temperature of the aqueous solution tank of the tip is 50° C. or more and 100° C. or less, and the cooling material is 20 parts by weight of malic acid, 30 parts by weight of sodium hydrogen carbonate It is composed of parts and 1.5 parts by weight of sodium alginate, and reacts with the generated water to cool the tip and the raw material, thereby reducing the spring back phenomenon of the raw material.

According to the present invention, by changing the type of the jig and the type of the coupling part, a plurality of medical needles can be manufactured precisely and quickly.

In addition, the cylindrical bar may be polished to couple one side of the coupling part and the other side of the cylindrical bar to couple with the handle.

By generating the gloss of the processed cylindrical bar using electropolishing, it is possible to create gloss more effectively than the conventional method of producing gloss with sandpaper or a grinder.

1 is a flowchart for explaining a method for manufacturing a medical needle according to an embodiment of the present invention.
FIG. 2 is a diagram for explaining step S110 of FIG. 1 .
3 is a view showing a bending machine according to an embodiment of the present invention.
FIG. 4 is a view for explaining the jig of FIG. 3 .
5 is a view showing a result using a bending machine according to an embodiment of the present invention.
6 is a view showing a polishing machine according to an embodiment of the present invention.
FIG. 7 is a view showing the coupling part of FIG. 5 .
8 is a view showing a method of using a polishing machine according to an embodiment of the present invention.
9 is a view showing a result of step S140 of FIG. 1 .
10 is a view for explaining a press machine according to an embodiment of the present invention.

Since the present invention can have various changes and can have various forms, implementation examples (態樣, aspects) (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

The terminology used herein is only used to describe a specific embodiment (aspect, aspect, aspect) (or embodiment), and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as comprises or consists of are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

~1~, ~2~, etc. described in the present specification are only to be referred to to distinguish that they are different components, and are not limited to the order of manufacture, and their names in the detailed description and claims of the invention are may not match.

Hereinafter, a method for manufacturing a medical needle according to an embodiment of the present invention will be described with reference to FIGS. 1 to 10 .

1 is a flowchart for explaining a method for manufacturing a medical needle according to an embodiment of the present invention.

First, the first processing device 1 processes one end of the cylindrical bar formed of a metal material (S110).

FIG. 2 is a diagram for explaining step S110 of FIG. 1 .

That is, as shown in FIG. 2 , the first processing device 1 may process one end of the cylindrical bar in a threaded shape, and may process one end of the cylindrical bar to include a slope through grinding.

Next, the post-processing device 2 post-processes the processed cylindrical bar (S120).

At this time, the post-treatment device 2 post-processes the cylindrical bar processed through the electrolytic polishing process.

Here, the electrolytic polishing process smooths the surface by dissolving the fine protrusion of the workpiece rather than the groove portion in the electrolyte, and electrolytic polishing is mainly used for products using stainless steel as a raw material. In addition, it is a method to obtain a polishing effect by giving an anode to a metal that needs polishing, a cathode to the electrode, and preferentially dissolving the protruding part where the current is concentrated when electricity is applied.

That is, generating the luster of the processed cylindrical bar using such electropolishing can more effectively generate luster than the conventional method of generating luster with sandpaper or a grinder.

Next, the second processing device 3 bends or grinds the other end of the post-processed cylindrical bar.

Here, the second processing apparatus 3 may include a bending machine 31 and a polishing machine 32 .

3 is a view showing a bending machine according to an embodiment of the present invention, FIG. 4 is a diagram for explaining the jig of FIG. 3, and FIG. 5 is a view showing a result using the bending machine according to an embodiment of the present invention.

At this time, as shown in FIG. 3 , the bending machine 31 includes a jig G that may have a plurality of shapes.

Here, the jig G includes a first holder 311 , a second holder 312 , and a fixing member 313 . First, the first cradle 311 includes one or more grooves, and each groove is disposed to be spaced apart from each other at a reference interval. And as shown in FIG. 4, the groove of the first holder is formed in a semi-cylindrical shape, and when the first holder is virtually divided into three equal parts, from each of the 1/3 and 2/3 points to the 1/2 point is constant. It is formed to have a slope. In this case, the diameter of the one or more grooves may include different diameters, and may be replaced according to the diameter of the cylindrical bar requiring bending.

In addition, each bolt groove 314 is included in the upper right and lower ends of the first holder 313 to fix the fixing member 313 . Next, the second holder 312 is installed to be spaced apart from the first holder 311 , and a groove is formed at the same position as the groove of the first holder 311 . In addition, the groove of the second holder 312 may be formed in a 'V' shape. Next, the fixing member 313 may be coupled to the first holder 311 or the second holder 312 with a bolt 315 to fix the cylindrical bar. That is, the bolt 315 may be coupled to each bolt groove 314 to fix the cylindrical bar.

Then, the user can fix the cylindrical bar having a plurality of sizes by rotating the bolt 315 to adjust the separation distance between the fixing member 313 and the first holder 311 or the second holder 312 .

At this time, in the embodiment of the present invention, the respective grooves of the first holder 311 and the second holder 312 have been described as having different specific shapes, but the first holder 311 and the second holder 312 have Each groove may be configured in a different shape.

That is, as shown in FIG. 5 , the bender 31 may bend the cylindrical bar.

And the following describes the polishing machine 32 according to an embodiment of the present invention using FIGS. 6 to 8 .

6 is a view showing a polishing machine according to an embodiment of the present invention, FIG. 7 is a view showing the coupling portion of FIG. 5, and FIG. 8 is a view showing a method of using the polishing machine according to an embodiment of the present invention.

As shown in FIG. 6 , the grinder 32 includes a coupling part 321 and a grinding blade 322 .

At this time, the coupling part 321 is formed in a cylindrical shape detachable from one side of the polishing machine 32 .

In addition, the coupling part 321 has a circular center hole and includes three coupling members having the same size.

At this time, the coupling member is configured in a sectoral shape having an interior angle of 120°.

That is, as shown in FIG. 7 , the coupling part 321 may be configured in different shapes depending on the size of the perforated center and the size of the three coupling members.

In addition, although the coupling part 321 in FIGS. 6 and 7 is shown as being composed of a sector-shaped coupling member having a 120° angle, the shape or size of the coupling member may vary. And the abrasive blade 322 is formed in the shape of a blade so that the other side of the cylindrical bar can be polished.

That is, as shown in FIG. 8 , the user may polish one side of the cylindrical bar to the polishing machine 32 and the coupling part 321 and the other side of the cylindrical bar to be coupled with the handle.

Next, the coupling device 4 is coupled with the handles 41 and 42 including the bent portion and the coupling portion (S140).

9 is a view showing a result of step S140 of FIG. 1 .

That is, as shown in FIG. 9, a medical needle in which one side is formed in a plurality of shapes through steps S110 to S140 is manufactured.

On the other hand, in the case of bending the raw material through the press machine P or the bending machine 31, a spring-back phenomenon occurs due to elastic recovery of the raw material, and it is necessary to reduce the spring-back phenomenon in order to bend the raw material according to specifications.

10 is a view for explaining a press machine according to an embodiment of the present invention.

Therefore, as shown in Figure 10, the press machine (P) of the present invention to reduce the springback phenomenon includes a worktable (P1), a pressure member (P2) and a plurality of support members (P3).

First, the work table P1 is shown to be formed in a semicircular shape to mount the raw material on the upper side as shown in FIG. 10 , but may be changed to a different shape according to design specifications.

Next, the pressure member P2 is installed to be spaced apart from the upper portion of the work table P1, and performs a pressing operation by applying pressure to the raw material placed on the work table P1 through vertical movement.

In this case, the pressure member P2 may apply pressure to the raw material mounted on the work table P1 using hydraulic pressure.

In a state in which pressure is applied to the raw material through the pressure member P2, the support member P3 supports the outer side of the raw material to fix the raw material.

That is, the support member P3 supports the side surface of the raw material in a state in which pressure is applied to the raw material in order to reduce the springback phenomenon of returning to the original shape after the raw material is deformed through the pressure member P2 .

At this time, the support member (P3) may include a tip (P31), a support (P32), a coupling portion (P33) having the same shape as the outer side of the raw material, as shown in FIG. 10, the outside of the tip (P31) includes a cooling tank (P31-1) containing a cooling material, and an aqueous solution tank (P32-1) containing an aqueous solution and a heating device (P32-2) on the outside of the support (P32), and a cooling tank ( P31-1) and a pipe (P32-3) connecting the aqueous solution tank (P32-1) is included.

First, the tip P31 may be replaced according to the shape of the outer side of the raw material.

In addition, the lower surface of the aqueous solution tank P32-1 is installed at a position higher than the lower surface of the cooling tank P31-1.

In addition, the upper surfaces of the aqueous solution tank (P32-1) and the cooling tank (P31-1) are provided with injection units that can be opened and closed to replenish the cooling material and the aqueous solution, respectively.

In addition, one side of the pipe (P32-3) is attached to the lower surface of the aqueous solution tank (P32-1), and the other side is installed on the lower surface of the cooling tank (P31-1) so that the water generated in the aqueous solution tank (P32-1) is discharged. It is installed in an inclined shape to flow into the cooling tank (P31-1).

In this case, the pipe P32-3 may further include a filter P32-4 to introduce only the water generated in the aqueous solution tank P32-1 into the cooling tank P31-1.

And, the heating device P32-2 is attached to the side surface of the aqueous solution tank P32-1, and maintains the temperature of the aqueous solution tank P32-1 at 50°C or more and 100°C or less.
Next, the cooling material further comprises 30 parts by weight of sodium bicarbonate and 1.5 parts by weight of sodium alginate relative to 20 parts by weight of malic acid to react with water to cool the tip P31 and the raw material.

delete

Malic acid is an organic acid that undergoes an endothermic reaction with water. The cooling material according to the present invention may contain 20 parts by weight of malic acid. When malic acid is less than 20 parts by weight, the endothermic reactivity with water is reduced, and malic acid exceeds 20 parts by weight. In this case, there is a disadvantage that may corrode the surface of the tip (P31).

And, sodium bicarbonate is an inorganic salt that causes an endothermic reaction with water, and 30 parts by weight of sodium bicarbonate may be included in the cooling material according to the present invention. There is a problem that the endothermic reactivity is lowered.

Sodium alginate is an organic acid that increases endothermic reactivity with water, and 1.5 parts by weight of sodium alginate may be included in the cooling material according to the present invention. There is a problem.

Next, the aqueous solution may further contain 10 parts by weight of bisphenol A-type epoxy resin and 3 parts by weight of poly(oxypropylene)diamine, based on 2 parts by weight of aminosilanized aluminum hydroxide.

Here, aminosilanized aluminum hydroxide is not volatilized by heat, and when aminosilanized aluminum hydroxide is included in less than 2 parts by weight, there is a problem that the aqueous solution according to the present invention cannot express flame retardancy and self-cooling properties, and aminosilane When aluminum hydroxide is included in excess of 2 parts by weight, mechanical properties of the aqueous solution may be reduced, and there is a problem in that the manufacturing cost is excessively increased.

In addition, aminosilanized aluminum hydroxide has a property of releasing water when the temperature is 50°C or more and 100°C or less.

Accordingly, the aqueous solution of the present invention preferably contains 2 parts by weight of aminosilanized aluminum hydroxide.

Next, the bisphenol A type epoxy resin is widely used as a coating agent or lining agent because it exhibits abrasion resistance, oil resistance, water resistance, etc., and the aqueous solution according to the present invention contains 10 parts by weight of a bisphenol A type epoxy resin to improve abrasion resistance.

At this time, when the weight part of the bisphenol A epoxy resin is less than 10 parts by weight, there is a problem that sufficient wear resistance cannot be imparted to the coating layer formed of the coating composition according to the present invention, and when the weight part exceeds 10 parts by weight, the present invention Accordingly, there is a problem that the viscosity of the coating composition is excessively high, which is not suitable for coating.

Therefore, it is preferable that the aqueous solution according to the present invention contains 10 parts by weight of the bisphenol A-type epoxy resin.

In addition, although the aqueous solution in the present invention was shown to contain a bisphenol A epoxy resin, a bisphenol-based epoxy resin such as a bisphenol F-type epoxy resin and a bisphenol AF-type epoxy resin or a novolac epoxy resin may be used.

Next, poly(oxypropylene)diamine is used to cure the aqueous solution at low temperature.

At this time, when the aqueous solution according to the present invention contains less than 3 parts by weight of poly(oxypropylene)diamine, there is a problem that curing of the aqueous solution does not proceed smoothly, and when the aqueous solution exceeds 3 parts by weight of poly(oxypropylene)diamine , it is difficult to control the curing of the aqueous solution, and there is a problem of deterioration of physical properties due to the uncoated curing agent.

Accordingly, the aqueous solution according to the present invention preferably contains 3 parts by weight of poly(oxypropylene)diamine.

That is, the aqueous solution according to the present invention preferably contains 2 parts by weight of aminosilanized aluminum hydroxide, 10 parts by weight of bisphenol A epoxy resin, and 3 parts by weight of poly(oxypropylene)diamine.

That is, the cooling material according to the present invention contains 20 parts by weight of malic acid, 30 parts by weight of sodium bicarbonate, and 1.5 parts by weight of sodium alginate, and the cooling material has the temperature of the tip P31 through an endothermic reaction with water generated through an aqueous solution. By lowering it, it is possible to reduce the springback phenomenon of the raw material.

Various modifications and changes to the present invention described above with reference to the accompanying drawings are possible by those skilled in the art, and such modifications and changes not limited through the claims should be construed as being included in the scope of the present invention.

1: first processing device
2: Post-processing unit
3: Second processing device
31: bending machine G: jig
311: first holder 312: second holder
313: fixing member 314: bolt groove
315: bolt
32: grinding machine 321: coupling portion;
322: abrasive blade
4: coupling device
41, 42: handle
P: press machine P1: workbench
P2: pressure member P3: support member
P31: Tip P31-1: Cooling Tank
P32: support P32-1: aqueous solution tank
P32-2: Warmer P32-3: Piping
P33: coupling part

Claims (4)

delete A first processing step of processing one end of the cylindrical bar formed of a metal material;
a post-processing step of post-processing the processed cylindrical bar;
a second processing step of bending or grinding the other end of the post-processed cylindrical bar; and
a coupling step of coupling the bent or polished part to a handle including a coupling part;
includes,
The post-processing step includes an electropolishing process, and is polished so that the diameter of the bent or polished other end is greater than the inner diameter of the coupling part,
The second processing step,
The other end of the post-processed cylindrical bar is bent using a bending machine, and the bending machine includes one or more grooves, each groove being spaced apart from a first holder at a reference interval, and installed spaced apart from the first holder and a second holder having a groove formed at the same position as the groove of the first holder, and a jig coupled with a bolt to the first holder or the second holder and comprising a fixing member for fixing the cylindrical bar. Way.
3. The method according to claim 2,
The groove of the first holder is formed in a semi-cylindrical shape, and when the first holder is virtually divided into three equal parts, it is formed to have a certain inclination from each of the 1/3 point and the 2/3 point to the 1/2 point. become,
The groove of the second holder is formed in a 'V' shape, and the method for manufacturing a medical needle including a bolt groove for fixing a fixing member to the lower right and upper ends of the first holder.
3. The method according to claim 2,
the bending machine
A workbench that holds the post-treated cylindrical bar and includes a groove according to the post-treated cylindrical bar, a pressure member that is installed on the upper part of the workbench and applies pressure to the raw material through vertical movement, after the pressure is applied to the raw material, It includes a plurality of support members for fixing the raw material by supporting the outer side of the raw material,
The support member includes a tip having the same shape as the outer side of the raw material and a support for supporting the tip, and the outside of the tip includes a cooling tank containing a cooling material reacting to water, the outside of the support includes an aqueous solution tank containing an aqueous solution generating water, a heating device for increasing the temperature, and a pipe connecting the cooling tank and the aqueous solution tank to send water to the cooling tank,
The aqueous solution further comprises 10 parts by weight of bisphenol A-type epoxy resin and 3 parts by weight of poly(oxypropylene)diamine, based on 2 parts by weight of aminosilanized aluminum hydroxide, and the aqueous solution has an internal temperature of 50° C. or more in the aqueous solution tank of the tip. When it is below 100℃, water is generated,
The cooling material further comprises 30 parts by weight of sodium bicarbonate and 1.5 parts by weight of sodium alginate, based on 20 parts by weight of malic acid, and reacts with the generated water to cool the tip and the raw material to reduce the springback phenomenon of the raw material A method for manufacturing a medical needle.

Images