Medical thread assembly for cannulation

Abstract

To provide a medical thread assembly for cannulation that can be inserted in two or more strands in a single procedure. [Solution] A medical thread (100) for cannula insertion comprises a medical thread having a toothed region of an inverted trapezoidal shape that widens and slopes on both sides in the lengthwise direction, a first non-toothed region extending from one end of the toothed region in the lengthwise direction and having no teeth on its surface, and a second non-toothed region extending from the other end of the toothed region in the lengthwise direction and having no teeth on its surface, and an insertion needle (200) consisting of a cylindrical body whose interior is connected along the lengthwise direction and whose front end is closed to form a blunt shape, has a length longer than the cannula and an outer diameter smaller than the inner diameter of the cannula, and whose rear end fits inside the open end of the first non-toothed region and is then crimped tightly and fixed in place in both widthwise directions. The insertion needle is inserted through the rear open port of the cannula and pulled out through the front open port, where it is cut and removed at the first non-toothed region.

Description

[Technical Field]

[0001] The present invention relates to a surgical instrument, and more particularly to a medical suture assembly for cannulation used to insert a medical suture into a cannula. [Background technology]

[0002] Cosmetics, massage, and other treatments are used to prevent skin aging, and in recent years, treatments to reduce wrinkles on the skin have become widespread.

[0003] Among wrinkle reduction procedures, face lift involves pulling the skin upwards, cutting off excess skin, and then stitching it up. This procedure has fast results, but it is highly risky, can leave scars in front of the ears and on the forehead, and has the disadvantage of taking about a month to recover. Furthermore, aging skin not only leads to the progression of wrinkles, but also has the side effect of thinning the skin and accelerating the aging process.

[0004] To compensate for the inconvenience of such surgical procedures, a so-called lifting procedure has been widely performed in which harmless medical threads are inserted into the skin to stimulate the skin tissue, thereby promoting skin contraction and regeneration, and furthermore, the medical threads that have adhered to the skin tissue are pulled upward and fixed to lift the sagging skin tissue. Lifting procedures are widely used because they are simpler than existing surgical procedures and do not interfere with daily life.

[0005] Lifting treatments typically use a lifting treatment tool in the form of a cannula with medical thread inserted into it, where the cannula is typically 8 to 12 cm long and the medical thread is 10 to 15 cm long, longer than the cannula.

[0006] As described above, conventional plastic surgery tools are designed to insert one medical thread into skin tissue per procedure, and this type of procedure requires a perforation procedure each time a medical thread is inserted, which lengthens the surgery time and increases the fatigue of the surgeon (e.g., plastic surgeon).

[0007] Furthermore, conventional shaping treatment tools require one tool to be used only once, which increases the treatment costs. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Korean Patent Registration No. 10-2237586 Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention was made to solve the problems of the prior art. The first objective is to improve procedure time and efficiency by inserting two or more strands of medical thread in a single procedure, and the second objective is to provide a medical thread for cannulation and a medical thread assembly having the same, which can reduce procedure costs by reusing the cannula after disinfection, etc. [Means for solving the problem]

[0010] To achieve the above object, the medical thread for cannulation of the present invention includes a toothed region, a first non-toothed region, and a second non-toothed region.

[0011] The toothed section is located in a central region along the length and forms teeth on the surface.

[0012] The first non-tooth region is formed by extending from one end of the tooth region in the length direction, and has no teeth formed on the surface.

[0013] The second non-tooth region is formed extending from the other end of the tooth region in the length direction, and has no teeth formed on the surface.

[0014] In the medical thread for cannulation of the present invention, the toothed portion is at least twice the length of the cannula and has a length of 16 to 50 cm, the first non-toothed portion is fixed to the rear end of the insertion needle and has a length of 1.5 to 2.5 cm, and the second non-toothed portion has a length of 0.5 to 2.5 cm.

[0015] In the medical thread for cannulation of the present invention, the teeth have an inverted trapezoidal shape that protrudes outward perpendicular to the length direction and has sloping side surfaces that widen and incline on both sides in the length direction.

[0016] The cannulation medical thread assembly of the present invention includes the medical thread described above and an insertion needle.

[0017] The insertion needle has a length longer than the cannula and an outer diameter smaller than the inner diameter of the cannula, and a rear end of the insertion needle is coupled to and fixed to the open end of the first non-tooth region portion of the medical thread.

[0018] In the medical thread assembly for cannulation of the present invention, the insertion needle is a cylindrical body with an open interior and a closed front end, and the rear end includes a rear joining portion that houses the open end of the first non-toothed region and is then crimped and sealed in both width directions to join and fix the open end of the first non-toothed region.

[0019] In the cannulation medical thread assembly of the present invention, the insertion needle has a blunt outer surface at the front end.

[0020] In the cannula-insertion medical suture assembly of the present invention, the insertion needle is inserted through the rear opening of the cannula and then withdrawn through the front opening of the cannula. After at least a portion of the first non-toothed region has been withdrawn from the front opening, the insertion needle is cut at the first non-toothed region and removed. [Effects of the Invention]

[0021] The medical thread for cannulation of the present invention having the above-described configuration and the medical thread assembly having the same can be manufactured and stored separately, and the length of the medical thread can be freely adjusted, i.e., it can be manufactured to be long. Therefore, multiple (two or more) strands of medical thread can be inserted in one procedure, thereby reducing the procedure time and greatly improving the efficiency of the procedure.

[0022] In addition, the medical thread for cannulation and the medical thread assembly including the same of the present invention are manufactured and stored separately from the cannula, so they can be reused after sterilizing the cannula, thereby significantly reducing the cost of the procedure. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 1 is a perspective view of a medical thread for cannulation according to the present invention. [Figure 2] FIG. 2 is a perspective view of a medical thread assembly according to the present invention. [Figure 3a] 1 illustrates a method for inserting a medical thread assembly according to the present invention into a cannula and using it. [Figure 3b] 1 illustrates a method for inserting a medical thread assembly according to the present invention into a cannula and using it. [Figure 3c] 1 illustrates a method for inserting a medical thread assembly according to the present invention into a cannula and using it. [Figure 3d] 1 illustrates a method for inserting a medical thread assembly according to the present invention into a cannula and using it. DETAILED DESCRIPTION OF THE INVENTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings.

[0025] FIG. 1 is a perspective view of a medical thread for cannulation according to the present invention.

[0026] As shown in Figure 1, the medical thread 100 for cannulation is inserted into skin tissue and stimulates the skin tissue to promote skin contraction, skin regeneration, etc., and when the medical thread 100 that has adhered to the skin tissue is pulled backward, it can be used for purposes such as lifting sagging skin tissue.

[0027] The medical thread 100 is preferably made of a bioabsorbable material that is absorbed by the skin over a certain period of time. Examples of such bioabsorbable materials include polylactic acid, polydioxanone, polyglycolic acid, polycaprolactone, and copolymers of lactic acid and glycolic acid. However, depending on the embodiment, the medical thread 100 may also be made of a bionon-absorbable material such as polypropylene, nylon, or a mixture thereof.

[0028] The medical thread 100 includes a first non-toothed region 110, a toothed region 120, and a second non-toothed region 130 along the length direction.

[0029] The first non-tooth region 110 is a region where no teeth (C) are formed on the outer surface, and is formed in one end region of the medical thread 100 in the longitudinal direction.

[0030] The open end of the first non-toothed region 110 can be coupled and fixed to the rear end of the insertion needle 200, which will be described later.

[0031] After being pulled out through the front opening of the cannula 300 (described later), the first non-toothed region 110 is bent backward and provisionally secured to the edge of the front opening. To achieve this function and purpose, the minimum length of the first non-toothed region 110 is preferably 1.5 cm or more. If the length of the first non-toothed region 110 is less than 1.5 cm, it may be difficult to provisionally secure the first non-toothed region 110 to the edge of the front opening of the cannula 300 due to the material of the medical thread 100. Furthermore, the first non-toothed region 110 may be pulled into the front opening of the cannula 300 during the procedure, resulting in a failed procedure. On the other hand, if the length of the first non-toothed region 110 exceeds 2.5 cm, a large area of the medical thread 100 will be exposed outside the front opening of the cannula 300 during the procedure, which may interfere with the procedure and reduce the length of the toothed region 120, which may irritate the skin tissue. This is undesirable.

[0032] The toothed region 120 is an area where teeth (C) are formed on the outer surface, and can be formed to extend beyond the first non-toothed region 110. Considering that the cannula needle length during the shaping procedure is 8-10 cm and the single insertion length of the toothed region 120 is also approximately 8-10 cm, the toothed region 120 can be formed to a minimum length of at least twice the length of the cannula needle, for example, 16-20 cm, for two or more consecutive insertions. However, since it is practically difficult to perform consecutive insertions of the medical thread 100 more than five times, and if the length of the medical thread 100 is too long, difficulties arise in manufacturing, storage, and treatment. Therefore, five consecutive insertions can be set as the upper limit, and in this case, the maximum length of the toothed region 120 can be 40-50 cm.

[0033] In the tooth region 120, the teeth (C) not only have the function of pulling the medical thread adhered to the skin tissue backward to lift the skin tissue, but also have the function of stimulating the skin tissue when inserted to promote skin contraction, skin regeneration, etc., so they can be configured in an inverted trapezoid shape that protrudes in both directions along the length, i.e., a shape that protrudes outward perpendicular to the length direction and has inclined side portions that protrude diagonally in both directions along the length direction.

[0034] The teeth region 120 can be formed with teeth (C) by cutting and removing a part of the outer surface of the medical floss 100 by compressing it using a compressor or the like.

[0035] The teeth (C) of the toothed area 120 can be spaced apart along the length and staggered in both width directions, allowing the teeth (C) of the toothed area 120 to strongly and evenly pull the skin tissue and stimulate the skin tissue evenly in both directions, greatly improving the shaping effect.

[0036] The second non-tooth area portion 130, like the first non-tooth area portion 110, is an area in which no teeth (C) are formed on the outer surface, and can be formed by extending from the tooth area portion 120 on the opposite side of the first non-tooth area portion 110.

[0037] The second non-toothed region 130 is the portion that is grasped with the fingers when pulling the medical suture 100 backward after inserting the medical suture 100 into the skin tissue, and in order to achieve this function and purpose, it is desirable to configure the second non-toothed region 130 to have a minimum length of 0.5 cm or more. If the length of the second non-toothed region 130 is less than 0.5 cm, it is difficult to grasp the second non-toothed region 130 with the fingers. On the other hand, if the length of the second non-toothed region 130 exceeds 2.5 cm, it does not further contribute to the function and purpose of finger grasping and also reduces the length of the toothed region 120, which is undesirable.

[0038] The medical thread 100 can be configured in various cross-sectional shapes such as circular, oval, rectangular, etc. The medical thread 100 can be formed in various widths and thicknesses depending on the purpose of treatment, for example, the first and second non-tooth region portions 110, 130 can be configured with a width of 0.8 to 1.2 mm and a thickness of 0.3 to 0.5 mm, and the tooth region portion 120 can have the same thickness as the first and second non-tooth region portions 110, 130 but can be configured with a width that is 20% or more wider than the first and second non-tooth region portions 110, 130, for example, a width of 1.0 to 1.5 mm.

[0039] FIG. 2 is a perspective view of a medical thread assembly according to the present invention.

[0040] As shown in FIG. 2, the medical thread assembly according to the present invention is for inserting the medical thread 100 into a cannula 300, and includes the medical thread 100 and an insertion needle 200.

[0041] The insertion needle 200 has a rear joining portion 210 at its rear end that internally joins a part of the open end of the first non-toothed region 110. The rear joining portion 210 has the shape of a flat portion that is crimped symmetrically in both width directions to the rear end of the cylindrical insertion needle 200.

[0042] The insertion needle 200 has an outer diameter smaller than the inner diameter of the cannula 300 so that it can be inserted into the cannula 300, and is longer than the cannula 300 so that it can be inserted through the rear open port of the cannula 300 and then withdrawn from the front open port.

[0043] The insertion needle 200 has a blunt front end, which prevents the practitioner from being injured (e.g., poked) when handling the insertion needle 200 (e.g., inserting and withdrawing the insertion needle 200 from the cannula 300).

[0044] The insertion needle 200 is preferably configured as a hollow cylinder, but may also be configured as a solid circular body. In this case, the rear bonding portion 210 can be bonded and fixed to the open end of the first non-tooth region portion 110 using an adhesive or the like.

[0045] Like the cannula 300, the insertion needle 200 is preferably made of a metal material such as stainless steel or titanium, but since it is not designed to be inserted into skin tissue, there is no need to particularly limit the material, and therefore it may be made of plastic or the like.

[0046] 3a to 3d show how the medical thread assembly according to the present invention is inserted into a cannula and used.

[0047] As shown in FIG. 3a, medical thread assemblies 100, 200 and a cannula 300 are prepared.

[0048] The cannula 300 is used to insert the medical thread 100 into skin tissue during shaping treatments such as wrinkle reduction and lifting, and includes a cannula hub 310, a cannula needle 320, etc.

[0049] The cannula hub 310 is the part where the practitioner grasps the cannula 300 or inserts the medical thread assembly 100, 200, and the front part is connected to the rear end of the cannula needle 320, and the rear part can be configured in an open shape.

[0050] The cannula hub 310 has a flow passage that communicates along its length. The flow passage is configured so that the inner diameter increases toward the rear, facilitating insertion of the insertion needle 200.

[0051] The cannula hub 310 is made of a plastic material, and may also be made of a material that has some elasticity.

[0052] The cannula needle 320 is inserted into the skin tissue and can be made of a metal that is harmless to the human body, such as stainless steel or titanium.

[0053] The cannula needle 320 can be configured as a cylinder having a larger inner diameter than the medical thread 100 and the insertion needle 200 so that the medical thread 100 and the insertion needle 200 can be inserted and flow through.

[0054] It is desirable for the cannula needle 320 to have a closed, blunt front end to minimize damage to the skin tissue (e.g., bruising due to vascular damage) when inserted into the skin tissue. In this case, the cannula needle 320 may have its front opening positioned to the side of the front end.

[0055] The cannula needle 320 has a sloped guide portion at the front end sealing portion that guides the cannula needle 320 toward the front open port. The sloped guide portion has a shape that slopes forward at the bottom of the inner diameter toward the front end of the front open port, and this shape makes it easy to guide and eject the insertion needle 200 toward the front open port.

[0056] Since the cannula needle 320 is inserted into the skin tissue, it is preferable that it is made of a metal material such as stainless steel or titanium that is harmless to the human body.

[0057] 3b, insertion needle 200 can be inserted through the rear opening of cannula 300, which is the rear opening of cannula hub 310.

[0058] Since the insertion needle 200 is longer than the needle cannula 320 , when the insertion needle 200 is inserted by taking the rear end of the insertion needle 200 , the front end of the insertion needle 200 is ejected through the front opening of the cannula 300 .

[0059] As shown in FIG. 3c, the front end of the insertion needle 200 can be withdrawn through the front open port of the cannula 300. Here, a portion of the first non-toothed region 110 coupled to the rear coupling portion of the insertion needle 200 is pulled out of the front open port. The extent to which the first non-toothed region 110 is pulled out is determined by the practitioner. For example, when inserting the cannula 300 into skin tissue, if a treatment that does not irritate the skin tissue is desired, only the first non-toothed region 110 can be exposed through the front open port. If a treatment that irritates the skin tissue is desired, up to a portion of the toothed region 120 can be exposed. The boundary between the exposed and unexposed portions can be temporarily fixed in a folded shape over the rear end of the front open port.

[0060] As shown in Fig. 3d, the insertion needle 200 can be cut and separated from the medical thread 100. The cutting is performed at the first non-toothed region 110, and preferably, the cutting can be performed along the boundary between the rear end of the insertion needle 200 and the first non-toothed region 110.

[0061] The practitioner then inserts the cannula 300 with the medical thread 100 inserted into the skin tissue. Because the medical thread 100 is more than twice as long as conventional medical threads, the practitioner can remove the inserted cannula 300 from the skin tissue down to the skin surface and then reinsert the cannula 300 in a different direction. Here, the medical thread 100 is inserted into the skin tissue while exposed to the outside of the cannula 300, so the medical thread 100 stimulates the skin tissue with the teeth (C) on its outer surface as it is inserted, thereby increasing the stimulation to the skin tissue. In addition, the teeth (C) protrude in both directions along the length, exerting a skin contraction and regeneration effect by stimulating the skin tissue in the insertion direction and a lifting effect by blocking backward movement after insertion. This allows two effects to be achieved simultaneously in a single treatment, maximizing the treatment effect.

[0062] Although the embodiments of the present invention have been described above, these are merely illustrative of the present invention, and those skilled in the art may modify or alter these embodiments into other forms. However, since the scope of the present invention is defined by the scope of the utility model registration claims, such modifications and alterations are also construed as falling within the scope of the present invention. [Explanation of symbols]

[0063] 100 Medical thread 110 first non-tooth region 120 Tooth region 130 second non-tooth region 200 Insertion Needles 210 Posterior joint 300 cannula 310 Cannula Hub 320 Cannula Needle

Claims

1. a medical thread having a length at least twice the length of the cannula, the medical thread including: a toothed region portion disposed in a central region along the length direction, with teeth formed on the surface, the teeth protruding perpendicularly outward to the length direction, and having only an inverted trapezoidal shape with side surfaces that are inclined and widen on both sides in the length direction; a first non-toothed region portion extending from one end of the toothed region portion in the length direction, with no teeth formed on the surface; and a second non-toothed region portion extending from the other end of the toothed region portion in the length direction, with no teeth formed on the surface; an insertion needle having a cylindrical body whose interior is connected along its length and whose front end is closed in a blunt shape, and which has a length longer than the cannula and an outer diameter smaller than the inner diameter of the cannula, and whose rear end is fitted inside the open end of the first non-toothed region and then crimped tightly in both width directions to be joined and fixed; The insertion needle is inserted through a rear opening of the cannula and then withdrawn through a front opening of the cannula, and after at least a portion of the first non-toothed region is withdrawn from the front opening, the first non-toothed region is cut and removed.

2. 2. The medical thread assembly for cannulation according to claim 1, wherein the toothed region has a length of 16 to 50 cm, the first non-toothed region has a length of 1.5 to 2.5 cm, and the second non-toothed region has a length of 0.5 to 2.5 cm.

Images