KR20230149285A - manufacturing method of medical needle holder - Google Patents

Abstract

A method for manufacturing a medical needle holder is disclosed. The method of manufacturing a medical needle holder of the present invention is a method of manufacturing a medical needle holder including a pair of first and second sets that are hinged to each other to hold a medical needle, wherein the first and second sets are each , a jaw body portion in which a groove having a closed structure to the outside is formed on the side due to a continuously protruding wall on one side; And a contact piece that is inserted into the groove and joined to the jaw body, has a concavo-convex portion on one surface having a plurality of protrusions to contact the medical needle, and is made of a material having a greater hardness than the medical needle, The protrusions of the first concavo-convex portion provided on the contact piece of Article 1 and the protrusions of the second concavo-convex portion provided on the contact piece of Article 2 engage with each other to grip the medical needle, and the protrusions of the second concavo-convex portion provided on the contact piece of Article 2 are engaged with each other and hold the medical needle, The pair of contact pieces includes a pair of contact piece base materials each having the first and second concave-convex portions on one surface of the other, in a state where the first and second concavo-convex portions are overlapped so that the first and second concavo-convex portions engage with each other. It is characterized by being cut into the designed shape and size and formed simultaneously. According to the present invention, a pair of contact pieces provided in Articles 1 and 2 are stacked with a pair of contact piece base materials provided with the first and second concavo-convex portions on each one surface so that the first and second concavo-convex portions engage with each other. By cutting a pair of contact piece base materials into the designed shape and size and forming them at the same time, the engagement between the protrusions of the concavo-convex portions provided in Articles 1 and 2 is accurately achieved, and the medical needle can be held stably so that it does not rotate or move.

Description

Manufacturing method of medical needle holder {manufacturing method of medical needle holder}

The present invention relates to a method of manufacturing a medical needle holder that can be used to perform medical procedures by holding a medical needle.

As is well known, medical needles are used for various treatments and procedures. Typically, medical needles are made of a cylindrical shape made of metal. Therefore, when the operator holds the medical needle with his hand and penetrates the patient's skin, the needle rotates easily.

If the needle rotates in a different direction due to the operator's carelessness during a medical procedure, the curved tip of the rotating needle may cause unwanted damage to other important organs. In addition, since it is difficult for the operator to visually check the direction of the tip of the rotated needle from the outside, the operator does not anticipate the direction of the needle at all during the penetration process and moves in a different direction, causing unwanted organ damage in the body. There was a problem.

For this reason, medical needle holders of various structures that can be used to stably hold a medical needle and perform medical procedures have been developed and used.

Republic of Korea Registered Utility Model Publication No. 0376362 (hereinafter referred to as prior art) discloses a medical forceps for holding medical needles as a type of medical needle holder. The medical needle holder of the prior art includes a pair of supports bent at a certain angle, tongs provided at each end of the pair of supports, and guide pieces provided on the inner surfaces of each of the pair of supports. Concave-convex protrusions to increase the gripping force are integrally formed on the contact surface of the tongs.

Meanwhile, medical needles are usually manufactured through processes such as drawing and extrusion, and their metal structure is dense. Therefore, in the process of performing a medical procedure while holding a medical needle with a conventional medical needle holder, the problem of the uneven protrusions manufactured integrally with the forceps being crushed is likely to occur.

Republic of Korea Registered Utility Model Publication No. 0376362 (announced on March 11, 2005)

The present invention was developed to solve the above-described conventional problems, and the engagement between the protrusions of the concavo-convex portions provided in Articles 1 and 2 is precisely performed to manufacture a medical needle holder that can stably hold the medical needle so that it does not rotate or move. The purpose is to provide a method.

The present invention manufactures a medical needle holder that can increase durability by preparing the part in contact with the medical needle with a material having greater hardness than the medical needle, so that no deformation occurs due to contact with the medical needle even when used repeatedly for a long period of time. Another purpose is to provide a method.

According to one aspect of the present invention, there is a method of manufacturing a medical needle holder including a pair of first and second sets that are hinged to each other to hold a medical needle, wherein the first and second sets are each on one side. A jaw body portion in which a groove having a closed structure to the outside is formed laterally due to a continuous protruding wall; And a contact piece that is inserted into the groove and joined to the jaw body, has a concavo-convex portion on one surface having a plurality of protrusions to contact the medical needle, and is made of a material having a greater hardness than the medical needle, The protrusions of the first concavo-convex portion provided on the contact piece of Article 1 and the protrusions of the second concavo-convex portion provided on the contact piece of Article 2 engage with each other to grip the medical needle, and the protrusions of the second concavo-convex portion provided on the contact piece of Article 2 are engaged with each other and hold the medical needle, The pair of contact pieces includes a pair of contact piece base materials each having the first and second concave-convex portions on one surface of the other, in a state where the first and second concavo-convex portions are overlapped so that the first and second concavo-convex portions engage with each other. A method of manufacturing a medical needle holder is provided, which is characterized in that it is simultaneously formed by cutting into a designed shape and size.

The step of simultaneously forming a pair of contact pieces includes preparing a pair of contact piece base materials with concavo-convex portions on one side and a flat and smooth other surface, stacking the pair of contact piece base materials so that the respective concavo-convex portions engage with each other, and then In a state where a pair of contact piece base materials are overlapped, a pair of contact piece base materials can be cut into the designed shape and size to form a pair of contact pieces at the same time.

The cutting may use laser cutting.

The medical needle may be made of a stainless steel-based material, and the contact piece may be made of a tungsten carbide material.

The first and second tanks each include a through hole formed through the tank body to communicate with the groove; And it may further include a cap that is inserted into the through hole and coupled to the jaw body portion to close the through hole.

The cap is made of the same stainless steel material as the tank body, and the cap can be integrally coupled to the tank body through welding or adhesive while inserted into the through hole.

The cap includes at least one material of rubber, silicone, or epoxy having a certain level of elasticity, and the cap may be forcibly pressed into the through hole or integrally coupled to the tank body through an adhesive.

According to the manufacturing method of the medical needle holder of the present invention described above, a pair of contact pieces provided in Articles 1 and 2 are formed by forming a pair of contact piece base materials provided with the first and second concavo-convex portions on one surface of each of the first and second concavo-convex portions. And the second concavo-convex portion is formed at the same time by cutting a pair of contact piece base materials into the designed shape and size while stacked so that they engage with each other, so that the engagement between the protrusions of the concavo-convex portion provided in Articles 1 and 2 is accurately achieved, allowing the medical needle to rotate or move. It can be held stably to prevent damage.

In addition, since the contact piece in contact with the medical needle is made of a material with greater hardness than the medical needle, the contact piece does not easily deform in shape even when used repeatedly over a long period of time, enabling excellent durability.

In addition, manufacturing tolerances can be minimized as the contact piece is inserted into the groove of the jaw body and joined to the jaw body. Therefore, it is easy to connect the contact piece to the designed position on the jaw body, minimizing the defect rate and increasing productivity. It can be.

In addition, the assembly tolerance between the jaw body and the contact piece is minimized, so it can be used for other medical procedures in addition to surgical suturing, and the operator's discomfort due to shape changes can be minimized.

In addition, the edge side of the contact piece is in close contact with the inner wall forming the groove to prevent gaps between them, thereby preventing the elution of filler, solvent, or adhesive from occurring when sterilizing and cleaning the medical needle holder after a medical procedure. Hygienic stability and safety in use can be increased.

In addition, by forming a through hole in the jaw body, unnecessary and excessively applied filler, solvent, or adhesive during the process of joining the contact piece to the jaw body can be smoothly discharged from the groove through the through hole, ultimately allowing medical procedures. After sterilizing and cleaning the medical needle holder, it is possible to prevent the elution of filler, solvent, or adhesive from occurring, as well as to prevent the outer surface of the tank body from being contaminated.

1 is a perspective view showing a medical needle holder manufactured through a method of manufacturing a medical needle holder according to a first embodiment of the present invention;
Figure 2 is an exploded perspective view showing a set of medical needle holders manufactured through the method of manufacturing medical needle holders according to the first embodiment of the present invention;
Figure 3 is a cross-sectional view showing a medical needle holder manufactured through the method of manufacturing a medical needle holder according to the first embodiment of the present invention;
Figure 4 is a diagram showing a method of manufacturing a contact piece of a medical needle holder through a method of manufacturing a medical needle holder according to the first embodiment of the present invention;
Figure 5 is a cross-sectional view taken along line V-V of Figure 1;
Figure 6 is a perspective view showing a medical needle holder manufactured through the method of manufacturing a medical needle holder according to a second embodiment of the present invention;
Figure 7 is a cross-sectional view showing a medical needle holder manufactured through the method of manufacturing a medical needle holder according to a second embodiment of the present invention;
Figure 8 is an exploded perspective view showing a set of medical needle holders manufactured through the method of manufacturing medical needle holders according to the second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the attached drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms. These embodiments only serve to ensure that the disclosure of the present invention is complete and to those skilled in the art to fully convey the scope of the invention. This is provided to inform you. In the drawings, like symbols refer to like elements.

The medical needle holder manufactured through the manufacturing method of the medical needle holder according to a preferred embodiment of the present invention has the part in contact with the medical needle made of a material with greater hardness than the medical needle, so that even when used repeatedly for a long period of time and multiple times, the medical needle holder is made of a material that is in contact with the medical needle. Durability can be increased as no deformation occurs due to contact.

Hereinafter, the present invention will be described in detail with reference to various embodiments.

The medical needle holder manufactured through the manufacturing method of the medical needle holder according to the first embodiment of the present invention has an end-effector, forceps, and scissors structure that the operator can hold with his or her hand. It can be applied to various areas related to medical procedures, such as medical facility members.

As shown in Figures 1 to 3, the medical needle holder 100 manufactured through the manufacturing method of the medical needle holder according to the first embodiment of the present invention is hinged to each other to hold the medical needle 10. Includes a pair of Articles 1 and 2 (110,120).

Here, the first and second tanks 110 and 120 may have substantially the same structure, and each includes a tank body 130 and a contact piece 140.

A pair of first and second articles 110 and 120 are coupled to each other so that they can hinge and rotate through a hinge portion 150, and the medical needle holder 100 according to an embodiment of the present invention includes a pair of first and second articles 110 and 120. By rotating the jaws 110 and 120 in a direction to approach each other so that the pair of contact pieces 140 are engaged and coupled to each other, the medical needle can be held stably.

Articles 1 and 2 (110, 120) may have different structures, but hereinafter they will be described based on having roughly the same structure.

As shown in FIGS. 1 to 3, the jaw body portion 130 includes a connecting portion 131 and an extension portion 132 integrally extending from the connecting portion 131. The connection portion 131 is provided with an insertion hole (not shown), and a hinge pin, etc. can be inserted into the insertion hole to couple the first and second sets to each other. It is preferable that the inner surface (one inner surface) of the connecting part 131 is flat and smooth. Therefore, when the first and second sets are hinged, the inner surface of the connecting part 131 of the first set 110 is connected to the second set. The inner surface of the connection portion 131 of the jaw 120 can be contacted with as little friction as possible. In an embodiment of the present invention, the connection portion 131 and the extension portion 132 may be made of various metals that are harmless to the human body, such as stainless steel.

As shown in Figures 2 and 3, a groove 133 is formed on one side of the jaw body 130, especially the extension part 132, and the contact piece 140 can be inserted into the groove 133.

Specifically, the jaw body portion 130, that is, the extension portion 132, is provided with a protruding wall 134 along the edge to protrude from one surface of the extension portion to form a groove 133.

Here, the protruding wall 134 is formed continuously along the circumferential direction of the edge of the extension portion 132, and the groove 133 has a structure that is laterally closed to the outside by the protruding wall 134. . To elaborate, the groove 133 is open to the outside on the upper side, but has a structure that is closed to the outside on the left, right, front, and back sides by the protruding walls 134.

Next, as shown in FIGS. 2 and 3, the contact piece 140 is inserted into the groove 133 and is firmly joined to the extension portion 132 of the jaw body portion 130.

An uneven portion 141 having a plurality of protrusions is provided on one surface of the contact piece 140 to enable contact with the medical needle 10. Specifically, the uneven portion 141 may be formed in various shapes that can increase friction, such as a structure in which sharp protrusions are continuously arranged as shown, and each protrusion may be formed in the shape of a square pyramid, for example. The other surface of the contact piece 140 is preferably flat and smooth so that it can stably adhere to the flat inner surface (bottom surface of the groove) of the extension portion 132 disposed inside the groove 133.

Here, the protrusions of the first concavo-convex portion provided on the contact piece 140 of the first article 110 and the protrusions of the second concavo-convex portion provided on the contact piece 140 of the second article 120 engage and contact each other to form a medical needle. (10) is held, and rotation or movement of the medical needle is restricted while being held, allowing stable and normal medical procedures to proceed.

In an embodiment of the present invention, the contact piece 140 is made of a material with greater hardness than the medical needle 10. Additionally, the contact piece 140 may be made of a material with higher wear resistance or compressive strength than a medical needle.

For example, the medical needle 10 may be made of a stainless steel-based material that is harmless to the human body, and the contact piece 140 may be made of tungsten carbide.

In general, tungsten carbide has excellent chemical stability, excellent acid resistance, high melting point of about 2870 degrees, excellent heat resistance, high wear resistance, high compressive strength, and high hardness. Therefore, even if the medical needle 10 is pressed and held through the contact pieces 140 of the pair of first and second sets 110 and 120, the shape of the contact pieces 140 is not deformed due to the difference in hardness of the materials. Therefore, the present invention can increase durability because deformation does not occur due to contact with a medical needle even if it is repeatedly used multiple times over a long period of time. For reference, the melting point of stainless steel is approximately 1420 degrees, which is significantly lower than the melting point of tungsten carbide.

In an embodiment of the present invention, the projections of the first concave-convex portion provided in the first article 110 and the protrusions of the second concave-convex portion provided in the second article 120 engage and contact each other to grip the medical needle 10. Explain how to do this.

As shown in FIG. 4, the contact pieces 140 may be manufactured in pairs. In the medical needle holder 100 according to an embodiment of the present invention, the first and second jaws 110 and 120 are hinged and rotated so that a pair of contact pieces 140 press the medical needle and hold the medical needle. And it is preferable that the pair of contact pieces 140 provided in Article 2 (110, 120) are accurately engaged with each other.

For this purpose, as shown in FIG. 4(a), first, prepare a pair of contact piece base materials 142 with concavo-convex portions 141 on one side and a flat and smooth other side. Next, as shown in FIG. 4(b), a pair of contact piece base materials 142 are stacked so that the respective uneven portions 141 are engaged with each other. Thereafter, as shown in FIG. 4(c), with the pair of contact piece base materials 142 stably stacked, the pair of contact piece base materials 142 are cut into the designed shape and size to form a pair of contact pieces. (140) is formed simultaneously. The cutting may use laser cutting or the like.

The contact piece 140 formed by cutting in this way is joined within the groove 133, and thus the engagement between the protrusions of the concavo-convex portions 141 provided in the first and second jaws 110 and 120 is precisely engaged, preventing the medical needle from rotating or moving. It can be held stably.

In embodiments of the present invention, the contact piece 140 can be firmly joined to the jaw body 130 in various ways. Since the jaw body 130 does not need to be made of a material with high hardness like the contact piece 140, the jaw body 130 and the contact piece 140 can be joined using a joining method of different materials.

For example, various joining methods such as soldering, brazing, welding, and adhesive bonding may be used to join the jaw body 130 and the contact piece 140 of different materials. Soldering is a method of joining without changing the base metal at a temperature below 450 degrees, brazing is a method of joining without changing the base metal at a temperature above 450 degrees, and welding is a method of joining at a temperature that can even melt the base metal. Since medical instruments often require precision, it is best to use a method that causes as little damage to the base material as possible as a joining method for the contact piece 140.

Meanwhile, in order to stably hold the medical needle 10, each contact piece 140 of the pair of first and second pairs 110 and 120 needs to be narrowed to face each other exactly and be in close contact with the medical needle. In the present invention, since the contact piece 140 is inserted into the groove 133 of the jaw body 130 and is joined to the jaw body 130 through the various methods described above, manufacturing tolerances are minimized and the first and second The two sets (110, 120) can be hinged and rotated to ensure accurate engagement contact between the concavo-convex portions (141) of each contact piece (140). In addition, through bonding through insertion of the contact piece 140 into the groove 133, it is not only easy to bond the contact piece 140 to the designed position on the jaw body 130, but also has a defect rate (a pair of contact pieces Situations in which accurate interlocking contact is not achieved) can be minimized and productivity can be increased.

As shown in Figure 5, the contact piece 140 is joined so as to be in close contact with the inner wall forming the groove 133 and the bottom. Therefore, the elution phenomenon of filler or solvent after bonding can be minimized.

To elaborate, in the embodiment of the present invention, when the contact piece 140 is joined to the jaw body 130 by soldering or brazing, the filler agent and solvent are applied to the inside of the groove 133 of the jaw body 130, specifically Bonding is performed in a state of being applied to one side of the extension portion 132, and the filler and solvent remain between the contact piece 140 and the extension portion 132 even after bonding.

In addition, even when the contact piece 140 is bonded to the jaw body 130 by a bonding method using an adhesive, the adhesive is applied to the inside of the groove 133 of the jaw body 130, specifically to one of the extension portions 132. Bonding is performed while applied to the side, and the adhesive remains between the contact piece 140 and the extension portion 132 after bonding.

As described above, the present invention ensures that the edge side of the contact piece 140 is in close contact with the inner wall forming the groove 133 to prevent the occurrence of a gap between them, so that it can be used in an embodiment of the present invention after a medical procedure. When sterilizing and cleaning the medical needle holder 100, elution of filler or solvent is prevented, thereby providing hygienic stability and safety in use.

Hereinafter, a medical needle holder manufactured through the manufacturing method of a medical needle holder according to the second embodiment of the present invention will be described. Repeated description of the same configuration as the first embodiment will be omitted, and the same configuration will start at number 200. We decide to use the drawing symbols.

6 to 8, in the second embodiment of the present invention, the first and second tanks 210 and 220 further include a through hole 236 and a cap 237, respectively.

Here, the through hole 236 is formed to penetrate the jaw body 230 so as to communicate with the groove 233 formed in the jaw body 230. Specifically, the through hole 236 extends from one side of the extension portion 232 toward the groove 233 and is connected to the groove.

The cap 237 is inserted into the through hole 236 and coupled with the extension portion 232 of the jaw body 230 to close the through hole 236.

In the present invention, in the process of applying a filler, solvent, or adhesive to the groove 233 and joining the contact piece 240 to the jaw body portion 230, the filler, solvent, or adhesive unnecessarily supplied is applied to the through hole 236. ) can be smoothly discharged from the groove 233. That is, the filler, solvent, or adhesive excessively applied to the inner wall of the groove 233 can be naturally discharged through the through hole 236. Accordingly, the problem of unnecessary filler, solvent, or adhesive remaining in the tank body 230 and contaminating the outer surface of the tank body can be reduced.

In this way, after the excessively supplied filler, solvent, or adhesive is discharged to the outside through the through hole 236, the cap 237 is inserted into the through hole 236.

Here, the cap 237 may be made of various materials that can be inserted into the through hole 236 and close the through hole 236. For example, the cap 237 may be made of the same stainless steel material as the jaw body 230. Additionally, the cap 237 may be made of a material with a lower hardness than the jaw body 230, or may be made of a material with a greater hardness than the jaw body 230.

In an embodiment of the present invention, the cap 237 may be integrally fixed with the jaw body 230 through welding or adhesive while being inserted into the through hole 236. As an example, the welding may be applied as laser welding.

As another example, the cap 237 may include at least one material of rubber, silicone, or epoxy having a certain level of elasticity. In this case, the cap 237 is force-fitted into the through-hole 236 or attached to the jaw body through adhesive. It may also be integrally combined with the unit 230.

Meanwhile, the cap 237 may function as a discharge passage for excessively supplied filler, solvent, or adhesive as described above, but may also provide additional functions.

Specifically, before the cap 237 is coupled, the through hole 236 may be used to check the bonding strength of the contact piece 240 to the jaw body portion 230. That is, after joining the contact piece 240 to the jaw body 230, a tool capable of pushing the contact piece 240 is inserted into the through hole 236 to remove one surface of the contact piece 240. By applying pressure, it can be confirmed whether the contact piece 240 is firmly joined to the jaw body 230.

When the preferred bonding strength range of the contact piece 240 to the jaw body 230 is set in advance, the contact piece 240 is pressed with the tool with a pressing force corresponding to the preset bonding strength range, and this pressing force is applied. In the case where the contact piece 240 remains connected to the jaw body 230, it can be selected as a good product (normal product).

Although the present invention has been shown and described in connection with preferred embodiments for illustrating the principles of the invention, the invention is not limited to the construction and operation as shown and described. Rather, those skilled in the art will understand that numerous changes and modifications can be made to the present invention without departing from the spirit and scope of the appended claims.

10: Medical needle 100: Medical needle holder
110,210: Article 1 120,220: Article 2
130,230: Jaw body 133,233: Groove
140,240: contact piece 141: uneven portion
142: Contact piece base material 143: Contact piece body portion
144: Contact piece head part 236: Through hole
237: cap

Claims (7)

A method of manufacturing a medical needle holder comprising a pair of first and second jaws hinged to each other for holding a medical needle, comprising:
Articles 1 and 2 above respectively:
A jaw body portion formed with a groove having a structure closed to the outside on the side due to a continuously protruding wall on one side; and
A contact piece is inserted into the groove and joined to the jaw body, has a concave-convex portion on one surface having a plurality of protrusions to contact the medical needle, and is made of a material having a greater hardness than the medical needle,
The protrusions of the first concavo-convex portion provided on the contact piece of the first set and the protrusions of the second concavo-convex portion provided on the contact piece of the second set are in engaging contact with each other to grip the medical needle,
In the pair of contact pieces provided in Articles 1 and 2, a pair of contact piece base materials provided with the first and second concavo-convex portions on each one surface are stacked so that the first and second concavo-convex portions engage with each other, A method of manufacturing a medical needle holder, characterized in that the pair of contact piece base materials are cut into the designed shape and size and formed simultaneously. According to paragraph 1,
The step of forming the pair of contact pieces simultaneously,
Prepare a pair of contact piece base materials with an uneven portion on one side and a flat and smooth other side. After stacking the pair of contact piece base materials so that the respective uneven parts engage with each other, a pair of contact piece base materials is placed on top of each other. A method of manufacturing a medical needle holder, characterized by simultaneously forming a pair of contact pieces by cutting the contact piece base material into a designed shape and size. According to paragraph 2,
A method of manufacturing a medical needle holder, characterized in that the cutting uses laser cutting. According to paragraph 1,
A method of manufacturing a medical needle holder, characterized in that the medical needle is made of a stainless steel-based material, and the contact piece is made of a tungsten carbide material. According to paragraph 1,
Articles 1 and 2 above respectively:
a through hole formed through the jaw body to communicate with the groove; and
A method of manufacturing a medical needle holder, further comprising a cap that is inserted into the through hole and coupled to the jaw body portion to close the through hole. According to clause 5,
The cap is made of the same stainless steel material as the jaw body, and the cap is integrally coupled to the jaw body through welding or adhesive while inserted into the through hole. Manufacturing method. According to clause 5,
The cap includes at least one material selected from the group consisting of rubber, silicone, and epoxy having elasticity above a certain level, and the cap is forcibly pressed into the through hole or integrally coupled to the tank body through an adhesive. A medical needle. Manufacturing method of holder.