WO2024215029A1 - Medical thread insertion device for relieving pain caused by elasticity - Google Patents

Abstract

A medical thread insertion device for relieving pain caused by elasticity according to the present invention is characterized by comprising: a needle having a hollow portion and an opening portion in which the proximal end of the hollow portion is open; a first thread that is bent around the opening portion while inserted in the hollow portion, thus forming a U shape and extending in two different directions; and a second thread wrapped in a spiral around the outer surface of the needle by gathering two branches formed by folding the second thread after inserting same between the bent portions of the first thread. According to the medical thread insertion device for relieving pain caused by elasticity, the first thread reliably maintains the volume thereof due to having a structure that maintains the U shape inside the needle and is thus prevented from being easily crushed inside body tissue. In addition, two strands of thread are wound and the pitch of each of the strands increases to form a denser winding, thus having the effect of efficiently alleviating the problem of elasticity increasing and causing pain to the patient.

Description

Medical thread insertion device to relieve pain caused by elasticity

The present invention relates to an insertion device for medical thread for alleviating pain caused by elasticity. The insertion device includes a medical thread that is capable of ultimately alleviating pain by providing a function of preventing pain from being induced in a patient by unnecessarily increasing elasticity in the process of expanding within body tissue due to a dense pitch while ensuring the volume and volume of the thread by weaving two threads instead of a single thread in a special structure.

Currently, the so-called 'thread lifting procedure' is widely performed, which involves inserting medical threads made of biocompatible materials that are harmless to the human body into the skin to stimulate or pull the skin tissue, thereby promoting skin contraction and regeneration, and further lifting sagging skin tissue by pulling upward and fixing the part adhered to the skin tissue using the tension of the suture.

This type of thread lifting procedure is simple compared to conventional surgical procedures and causes little disruption to daily life, so it is currently being used quite widely.

The thread lifting procedure is performed while the medical thread is inserted into a medical thread insertion device that can insert medical thread into body tissue. This medical thread insertion device generally has a structure that includes a needle and a hub.

Figure 6 is a cross-sectional view illustrating the structure of a known medical thread insertion device.

The prior art according to FIG. 6 relates to a basic embodiment of a thread inserter, which is Korean Patent No. 1811208, and comprises a needle (1) having a sharp tip, extending in the longitudinal direction and having a hole inside that is open at the tip, a thread (2) having a first extension portion inserted into the hole of the needle (1), a winding portion extending from the first extension portion and wound around the needle in the longitudinal direction outside the hole of the needle (1), and a second extension portion forming a knot portion that is tied to prevent unraveling of the winding portion, and when the thread (2) is inserted into the human body by the needle (1), the winding portion is guided into the human body and remains therein in a shape in which it is tightly wound around the needle (1), and the knot portion has at least one tying portion that is wound so as to be staggered around the needle.

The known technology according to Fig. 6 is composed of a single thread wrapped around the outer surface of the needle, and the short length, or pitch, of this single thread is short, so that the pitch is dense overall. Due to this, the elasticity becomes unnecessarily strong during the process of expansion within the body tissue, which not only causes pain to the patient during the procedure, but also can lead to a fatal problem in that the thread wrapped around the needle does not maintain its original shape and is pressed flat within the body tissue.

Figure 7 is a conceptual diagram illustrating a conventional medical thread insertion device.

FIG. 7 is a medical thread insertion device with enhanced convenience of procedure, which is a patent of the applicant of the present invention, Korean Patent No. 2223778, wherein first and second threads are combined in a needle having a hollow portion and an open portion, and the first thread is formed into a portion located inside the needle (100) and a portion located outside the needle (10), and the second thread (20) wraps around the first thread (10) and is injected into skin tissue together with the first thread (10). In particular, the device has a shape that wraps around the outer circumference of the needle (10) and the first thread (10) secured to the outer circumference in a spiral shape.

Although this technology overcomes the shortcomings of the known technology of Fig. 6, since it has a structure in which the second thread is wound around only one of the two strands in a state in which the first thread (10) is each stretched inside and outside the needle, there is an aspect in which the first thread is insufficient to faithfully play the role of a pillar or base capable of maintaining volume or mass.

Accordingly, there is an emerging need to develop a novel and advanced medical thread insertion device that can effectively alleviate the problem of causing pain to a patient by providing two threads as in Fig. 7, while maintaining the volume or volume due to the unique structure of the first thread to prevent the problem of being easily crushed within body tissue, and by winding two threads and increasing the pitch of each thread to make them tightly wound to enhance elasticity.

The present invention has been made to overcome the problems of the above technology, and its main purpose is to provide a medical thread insertion device which provides two threads, but prevents the problem of being easily crushed within body tissue by firmly maintaining the volume or volume due to the unique structure of the first thread, and effectively alleviates the problem of causing pain to a patient by strengthening elasticity by winding two threads and increasing the pitch of each one thread to make them densely wound.

Another object of the present invention is to provide various means by which the first thread can maintain the U-shape.

Another object of the present invention is to efficiently distribute external force applied to a bending portion to both branches by tapering both branches of the first thread.

A further object of the present invention is to provide a bridge connecting the two branches of the first thread to ensure a reliable shape-retaining function of the first thread.

In order to achieve the above object, the medical thread insertion device for relieving pain caused by elasticity according to the present invention is characterized by including: a needle having a hollow portion and an opening portion in which the hollow tip is open; a first thread that is bent around the opening portion in a state where it is inserted into the hollow portion and has a U shape and extends into two branches; a second thread that is inserted between the bent portions of the first thread and then folded to gather the two branches that are generated and wrap the outer surface of the needle in a spiral shape.

In addition, the medical thread insertion device is characterized by including a fixed ring formed in a ring shape and fitted onto the outer peripheral surface of the needle where the second thread is located.

In addition, it is characterized by being extended so as to taper in a direction in which they come together as they go toward the ends.

According to the medical thread insertion device for relieving pain caused by elasticity according to the present invention,

1) Since the first thread maintains a U-shape within the needle, it maintains volume or volume firmly, preventing the problem of being easily crushed within the body tissue, and by winding two threads and increasing the pitch of each thread, it strengthens elasticity through dense winding, effectively alleviating the problem of causing pain to the patient.

2) The first thread can effectively prevent the problem of the first and second threads being easily crushed within the body tissue due to various structures that can maintain the U shape.

3) By applying the stone part twice to reinforce the bending part of the first thread and going through the drying step, it is possible to produce various volumes and shapes compared to the known molding process, and

4) It has the effect of ensuring that the shape of the first room is maintained more reliably through the bridge.

FIG. 1 is a cross-sectional view showing the overall appearance of the medical thread insertion device of the present invention.

Figure 2 is a partially enlarged cross-sectional view illustrating the coupling relationship between the first and second rooms of the present invention.

Figure 3 is a cross-sectional view showing a tapered first thread.

Figure 4 is a flow chart illustrating the manufacturing steps of an extension protrusion.

Figure 5 is a cross-sectional view showing a structure in which a bridge is installed in the first room.

Figure 6 is a cross-sectional view showing a schematic structure of a conventional thread inserter.

Figure 7 is a cross-sectional view showing the joint structure of the first and second threads and the needle in a conventional medical thread insertion device.

The medical thread insertion device of the present invention comprises: a needle having a hollow portion and an opening portion with an open tip of the hollow portion; a first thread which is bent around the opening portion in a state where it is inserted into the hollow portion and has a U shape and extends into two branches, with both branches extending within the hollow portion; a second thread which is inserted between the bent portions of the first thread and then folded, and the two branches generated are gathered and wrapped in a spiral shape around the outer surface of the needle; wherein the two branches of the first thread are extended so as to taper toward each other as they approach the ends, and an extension protrusion which is formed on the bent portion of the first thread and the outer boundary portion of each of the two branches while being convexly rounded is formed in the best mode for carrying out the invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. The attached drawings are not drawn to scale, and like reference numerals in each drawing indicate like components.

Fig. 1 is a cross-sectional view showing the overall appearance of the medical thread insertion device of the present invention, and Fig. 2 is a partially enlarged cross-sectional view showing the coupling relationship of the first and second threads (10, 20) of the present invention.

As can be seen from FIG. 2, the medical thread insertion device of the present invention is basically composed of a needle (100) and first and second threads (10, 20) that are connected to the needle (100) but are separated from each other.

The needle (100) has an opening (120) that is open at least at one end, that is, the tip, so that it communicates with the hollow (110) while having a hollow interior (110) like a known medical needle (100).

At this time, the tip of the needle (100) may be formed to be sharp so that it can be easily inserted into the skin, or it may be formed to have a relatively blunt tip like the currently widely used cannula type needle (100) as shown in FIG. 2, and the tip-side opening (120) may be extended by cutting a portion along the length of the outer surface of the cannula.

The known medical thread insertion device includes a handle (or plunger) coupled to a hub in addition to the needle (100) described above. However, the insertion device of the present invention has the characteristic that the practitioner can perform the procedure by holding only the known hub (not shown) coupled to the needle (100) with one hand without using the plunger, thereby improving the convenience of the procedure and reducing the possibility of procedure failure due to thread detachment.

The threads (10, 20) of the present invention, i.e., the first thread (10) and the second thread (20), can be formed of known sutures, and their main purpose is to perform a skin beauty function of preventing wrinkles and sagging and improving elasticity by lifting aged or sagging skin by inserting them into skin tissue.

These first and second threads (10,20) may be made of a material that can melt into skin tissue over time to minimize side effects and allergic reactions, such as PDO (polydioxanone), or may be made of or at least include PLLA (poly L lactic acid) or PCL (polycaprolacton), which are known as collagen formation promoting substances.

Here, PDO has the advantage of having a relatively long half-life and less tissue reaction compared to other dissolvable sutures, and PCL has the advantage of being able to remain in the skin for a longer period of time.

At this time, the first and second threads (10, 20) are basically made of the same material, but are not limited thereto and may be made of different materials. For example, the first thread (10) may be made of PDO and the second thread (20) may be made of PCL.

Specifically, the first thread (10) is bent around the opening (120), that is, at the hollow (110) on the tip side of the needle (100), while inserted into the hollow (110) to form a U shape, and the portion bent in this manner is called a 'bent portion (12)'.

It can be seen that the first thread (10) is divided into two and extended by this bending portion (12).

This first room (10) acts as a guide for the second room (20) to be described later and can be named a ‘guide room’ or ‘guide yarn.’

The second thread (20) is a thread that is formed by inserting one end into the folded portion (12) of the first thread (10) and then folding the two strands (11) that are formed while gathering them and wrapping the outer surface of the needle (100) in a spiral shape from the tip to the tail end.

That is, the first and second threads (10, 20) of the present invention are both bent or folded in half, and have a structure in which the bent portions (12) of both are connected to each other so that they are interlocked, while the first thread (10) maintains a U shape and the two branches are positioned inside the needle (100), and the second thread (20) comes out of the opening (120) and then takes a structure in which it wraps around the outer surface of the needle (100).

In other words, the bending portion (12) of each of the first and second threads (10, 20) acts as a ring and has a structure in which they are interlocked with each other, and the two strands of the second thread (20) are gathered or a certain gap is secured, thereby wrapping the outer surface of the needle (100) in a spiral shape.

At this time, the lengths of the two branches (11) of the second thread (20) do not necessarily have to be the same, and one side may be longer or shorter, but it is preferable that the lengths of the two branches (11) of the second thread (20) are the same or similar so that the two branches (11) can wrap around the outer surface of the needle (100) while maintaining balance, and it is also preferable that the lengths of the two branches (11) of the first thread (10) are the same or similar.

The function and operation of the medical thread insertion device of the present invention having this structure will be explained by comparing it with the known technology illustrated in FIGS. 6 and 7.

The known technology according to Fig. 6 is composed of a single strand of thread wrapped around the outer surface of a needle (100), and the short length, or pitch, of this single strand is tight, so that elasticity increases unnecessarily within body tissues, causing pain to the patient during the procedure.

In addition, there may be a fatal problem in which the thread wrapped around the needle (100) does not maintain its original shape and becomes flattened within the body tissue.

In contrast, the medical thread insertion device of the present invention has a first thread (10) that has a U shape and serves as a kind of core with a constant volume, and the second thread (20) surrounds the circumference of the first thread (10, 20). Therefore, even when the first and second threads (10, 20) are inserted into body tissue, the second thread (20) is not easily pressed and can maintain a circular shape due to the volume-retaining function of the first thread (10). This has a significant difference.

In addition, since the second thread (20) is folded and the two branches (11) are gathered and wound around the outer surface of the needle (100), when viewed based on a single branch unit, the pitch is longer than that of the thread according to Fig. 6 and can flow independently from another branch adjacent thereto, thereby providing a characteristic that can reduce the patient's pain while alleviating the elasticity that is unnecessarily increased compared to the thread of Fig. 6.

In addition, the known technology according to the patent of the present applicant, Fig. 7, has the effect of alleviating elasticity by wrapping the two branches (11) of the second thread (20) along the outer surface of the needle (100) while folding and connecting the first and second threads (10,20), but since only one branch (11) of the first thread (10) is inside the needle (100) and as a result, the second thread (20) wraps the other branch, there is a possibility that when the first and second threads (10,20) are inserted into body tissue, the first thread (10) will not be able to function as a core for maintaining volume and will also become flat.

In contrast, the present invention can provide a characteristic in which the first and second threads (10, 20) maintain their original shape without flattening within the body tissue by maintaining the volume of the two prongs (11) of the first thread (10) in a U shape inside the needle (100) while the second thread (20) wraps around this circumference, thereby enabling the first and second threads (10, 20) to be more faithful to their original lifting function.

In addition, the present invention also has the characteristic of ensuring ease of treatment since the practitioner can perform the treatment with one hand without a separate hub.

Additionally, referring to FIG. 1, it can be seen that the device of the present invention has a ring shape and includes a fixed ring (30) that is fitted to the outer peripheral surface of the needle (100) where the second thread (20) is located.

This fixed ring (30) can be made of a soft material such as sponge or silicone.

In the known technology of Fig. 6, since the end of the thread wrapped around the outer surface of the needle (100) is knotted, the knotting process is difficult or the width of the thread changes, causing pain to the patient. In addition, since the operator performs the procedure with both hands using a hub, there is a problem that the knot may come loose when the needle (100) is pushed into the body tissue due to it getting caught on the body tissue.

In contrast, the present invention fixes the end of the second thread (20) to the outer surface of the needle (100) by a fixing ring (30) without a separate knot, and during the procedure, it is naturally pushed toward the tip of the needle (100) together with the first and second threads (10, 20) and then, when the needle (100) is pulled, it is positioned outside the body tissue together with the needle (100) without being inserted into the body tissue, thereby guiding the insertion of the first and second threads (10, 20) and solving the problem of causing pain to the patient by unnecessarily increasing the diameter of the second thread (20).

As mentioned above, the first thread (10) of the present invention acts as a central core when the combination of the first and second threads (10, 20) is inserted into body tissue. In order to maintain a circular shape without being easily distorted by the pressure of body tissue, it is preferable that the elastic modulus of the first thread (10) be greater than that of the second thread (20).

That is, the first room (10) has a property that does not easily stretch when the same external force is applied compared to the second room (20), and thus, it exhibits a property that does not stretch or become distorted relatively compared to the second room (20) even when subjected to pressure from body tissue, while providing the function of maintaining a circular shape as well as a circular volume for a long period of time.

Figure 3 is a cross-sectional view showing a tapered first room (10).

*As can be seen from Figure 3, rather than taking on a precise U shape, the first thread (10) can be tapered, that is, inclined in a direction in which it converges as it extends to the ends of the two branches (11).

This is to prevent the problem of the bending portion (12) being crushed or flattened first due to the pressure being applied to the bending portion (12) where the second thread (20) is caught, especially in the U shape, due to the elasticity that the first thread (10) basically possesses. In other words, the purpose is to naturally guide the external force (contact force with the second thread (20) and pressure of the body part) initially applied to the bending portion (12) to the tapered prongs (11) while preserving the bending shape of the bending portion (12) for as long as possible, thereby maintaining the volume of the first thread (10) itself.

Furthermore, as can be seen from the partial enlarged view of Fig. 3, a convexly rounded and protruding extension protrusion (40) can be formed at the folded portion (12) of the first room (10) and the outer boundary portion of each of the two branches (11).

This reinforces the volume of the folded portion (12) itself, but if the diameter (thickness) of the entire folded portion (12) is increased, the volume of the combination of the first and second threads (10, 20) within the body tissue may increase to an unnecessary level, causing pain. Therefore, it can be said that the volume is reinforced to a level where the shape of the folded portion (12) can be preserved while being tapered in the direction in which the two branches (11) described above come together.

In other words, among the inner and outer sides of the boundary between the folded portion (12) and the starting end of the two branches (11), only the outer boundary portion is rounded convexly to provide a characteristic of maintaining/preserving the folded shape of the folded portion (12) while relatively quickly distributing the external force described above to the two branches (11).

In particular, the extension protrusion (40) can be manufactured through a process of efficiently adding the same material as the first room (10) to the first room (10), and this will be described below.

Figure 4 is a flow chart showing the manufacturing steps of an extension protrusion (40).

As can be seen from Fig. 4, the above-described extension protrusion (40) can be manufactured through a first application step, a first drying step, a second application step, and a second drying step.

The first application step is a step of applying powder made of the same material as the first thread (10) to the outer boundary area.

The powder of the present invention is made of a bioabsorbable material as a raw material, and preferably means a powder produced by crushing the first thread (10), which is also a bioabsorbable material.

These powders have various diameters ranging from 100 microns to 3 mm, and rather than manufacturing the extension protrusion (40) using a known molding device, the extension protrusion (40) is formed by attaching the powder to the bending portion (12) so that it can have a more diverse thickness depending on the shape and elasticity of the bending portion (12), or more precisely, the outer boundary portion.

At this time, since applying dry powder may not adhere well to the outer boundary area, it is preferable to apply a mixture of 50 to 70 parts by weight of powder and 30 to 50 parts by weight of water.

At this time, the outer boundary area also becomes flexible when it comes into contact with water, which can enhance the adhesion to the mixture.

The first drying step is a step of drying the outer boundary area described above at 40 to 60°C for 30 to 60 minutes, thereby providing a base on which the powder can appropriately adhere to the outer boundary area while drying the water in the mixture.

In addition, it can be equipped with a function of sterilizing the outer boundary area while maintaining a drying temperature of 40 to 60℃.

The second application step refers to the step of applying a mixture of 20 to 40 parts by weight of the powder and 60 to 80 parts by weight of water to the outer boundary area using a spray method.

This second coating step provides the property of compensating for situations where the outer boundary area is not formed to sufficient thickness in the first coating step due to the relatively lower weight of powder in the mixture than in the first coating step.

The second drying step is the step of drying the outer boundary area at 50 to 70°C for 10 to 30 minutes.

This secondary drying step is a step that dries quickly at a higher temperature but takes a shorter time than the primary drying step. In order to dry a relatively small weight of powder in the secondary application step mentioned above, the drying time is sufficient in a short time, but a higher temperature is maintained than in the primary drying step for sure and fast drying and sterilization.

According to this manufacturing step of the extension protrusion (40), since powder of the same material as the first room (10) is applied to the outer boundary area, it provides the characteristic of having a variety of thicknesses and densities compared to the known molding step, and since it goes through a second coating-drying step, it is possible to manufacture an extension protrusion (40) of a more accurate and precise size, and at the same time, it has the characteristic of guaranteeing a sterilization effect.

Figure 5 is a cross-sectional view showing a structure in which a bridge (50) is installed in the first room (10).

Fig. 5 shows a case in which a bridge (50) is included to connect the area between the two branches (11) to prevent the two branches (11) of the first room (10) from being easily crushed or unnecessarily gathered by the pressure of body tissue.

This bridge (50) is a structure made of the same material as the first room (10) and has a similar diameter or a diameter smaller than the first room (10), and performs the function of physically assisting the two branches (11) to not easily come together due to external force and maintain the U shape of the first room (10).

These bridges (50) can be installed at specific locations between the two branches (11), such as around the bending portion (12) or around the ends of the two branches (11).

Also, although not shown in the drawing, the bridge (50) may take the form of a film or panel having a width greater than the diameter of the first room (10). In this state, a plurality of holes may be formed into a mesh structure like a net.

Furthermore, as can be seen from Fig. 5, it is also possible to install two or more bridges (50) at a certain interval along the extension direction between the two branches (11).

For example, when two bridges (50) are installed, the bridge (50) closer to the bending portion (12) (bridge (50) on the front end side of the first room (10)) may be installed to have a larger diameter than the bridge (50) farther from the bending portion (12) (bridge (50) on the rear end side of the first room (10)).

In other words, in a case where two or more bridges (50) are installed, the bridge (50) closer to the bending portion (12) has a larger diameter than the bridge (50) not close to it, so that the problem of the two branches (11) coming together from the bending portion (12) can be prevented more effectively.

As described so far, the configuration and operation of the medical thread insertion device for relieving pain caused by elasticity according to the present invention have been described in the above description and drawings, but this is merely described as an example, and the spirit of the present invention is not limited to the above description and drawings, and it goes without saying that various changes and modifications are possible within a scope that does not depart from the technical spirit of the present invention.

The present invention has industrial applicability as it can be mass-produced in the medical equipment industry and supplied to hospitals, etc.

Claims (6)

As a medical thread insertion device for relieving pain caused by elasticity, A needle having a hollow body and an open end with an open tip of said hollow body; A first thread having a U shape and extending in two branches while being inserted into the hollow and bent around the opening, with both branches extending within the hollow; A second thread is inserted between the folded portions of the first thread and then folded to gather the two forks that are created and wrap the outer surface of the needle in a spiral shape; The two branches of the above first room are, It is extended so that it tapers toward the end so that it converges with each other. A medical thread insertion device, characterized in that an extension projection that is convexly rounded and protrudes is formed on the bending portion of the first thread and the outer boundary portion of each of the two branches. In paragraph 1, The above medical thread insertion device is, A medical thread insertion device characterized by including a fixed ring formed in a ring shape and fitted onto an outer peripheral surface of the needle where the second thread is located. In paragraph 1, The first room above, A medical thread insertion device characterized by having a higher elastic modulus than the second thread. In paragraph 1, The above extension protrusion is, A first application step of applying a mixture of 50 to 70 parts by weight of a powder made of the same material as the first thread and 30 to 50 parts by weight of water to the outer boundary area; A first drying step of drying the outer boundary area at 40 to 60°C for 30 to 60 minutes; A second application step of applying a mixture of 20 to 40 parts by weight of the powder and 60 to 80 parts by weight of water to the outer boundary area by spraying; A medical thread insertion device characterized in that it is manufactured through a secondary drying step of drying the outer boundary portion at 50 to 70°C for 10 to 30 minutes. In paragraph 4, The first room above, A medical thread insertion device characterized by including at least one bridge connecting the interdigitated portions extending in two directions. In paragraph 5, The above bridge, At least two are formed at a certain interval from the above-mentioned bending portion to the ends of the two branches, A medical thread insertion device, characterized in that a bridge closer to the bending portion has a larger diameter than a bridge further from the bending portion.

Images