Device for inserting twisted medical thread and method for manufacturing same

Abstract

A device for inserting a twisted medical thread according to the present invention comprises: a body including a needle having a hollow portion and an opening at the front end of the hollow portion and a hub including a hub hollow portion in communication with the hollow portion to be coupled to an end of the needle; a twisted thread which is twisted by rotating at least one of opposite ends a predetermined number of rotations, and extends through the hub hollow portion, the hollow portion, and the opening to be exposed to the outside; a fixing ring for fixing the twisted thread exposed to the outside to an outer peripheral surface of the needle; and a fitting part inserted into the hub hollow portion to press and fix the twisted thread within the hub hollow portion. A device for inserting a twisted medical thread and a method for manufacturing same according to the present invention are advantageous in that a twisted thread can be rotated without a separate plastic surgery instrument and then can be stably accommodated within a needle while preventing a problem of unraveling.

Description

Medical twist thread insertion device and manufacturing method thereof

[0001] The present invention relates to a medical twist thread insertion device, and more particularly, to a twist thread insertion device capable of effectively preventing the problem of the leading and trailing ends of a twist thread easily coming loose when a twist thread capable of improving traction through a three-dimensional structure is inserted into a needle, and a method for manufacturing the same.

[0002] 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.

[0003] This type of thread lifting procedure is currently widely used because it is simpler than conventional surgical procedures and causes little disruption to daily life.

[0004] There are various types of bioabsorbable materials widely used as materials for lifting threads, and they can be made of materials such as polydioxanone, poly-L-lactic acid, or polycaprolactone.

[0005] The above-mentioned substances can be broken down and absorbed within living tissues, thereby minimizing side effects and allergic reactions, and can also promote collagen synthesis within living tissues.

[0006] The thread lifting procedure is performed while the medical thread is inserted into a medical thread insertion device that can insert the medical thread into the body tissue. This medical thread insertion device generally has a structure that includes a needle and a hub.

[0007] Meanwhile, referring to Korean Patent No. 2181949, a method for manufacturing a twisted medical thread, it is disclosed that a three-dimensional traction force can be improved in body tissue by a twisted thread in which at least one end of a yarn (main yarn) made of a material such as PDO is twisted by rotating it.

[0008] According to the twisted thread of the above technology, it has the characteristics of providing superior traction and lifting effects compared to existing medical threads with only cogs. However, since this twisted thread has a complex structure in three dimensions, it is economical to make it by rotating at least one section of the head unit, which is formed in a straight line as described above, by a certain number of rotations rather than forming it through a twist forming device.

[0009] However, when the twisted yarn is produced by rotating the main body, there may be a problem that the leading or trailing edge becomes loose again during the process of receiving it on the needle.

[0010] Therefore, there is a growing need to develop a novel and advanced twist yarn insertion device and a method for manufacturing the same, which can stably maintain the twist state of a twist yarn produced by rotating a yarn without it easily unraveling and can be accommodated in a needle to stably preserve the twist state throughout the procedure.

[0011] The present invention was devised to overcome the problems of the above technology, and its main purpose is to provide a twist thread insertion device that can stably maintain a twist shape without the twist thread boasting three-dimensional traction and fixing force coming loose within the needle.

[0012] Another object of the present invention is to secure fixing force without the problem of the twisted yarn being unnecessarily compressed and crushed through various structural modifications of the fitting portion that prevents the rear end of the twisted yarn from loosening.

[0013] Another object of the present invention is to propose a process for manufacturing an insertion device including a twisted yarn by inserting an existing yarn into a needle and then rotating it without a separate forming equipment.

[0014] A further object of the present invention is to restore the bent state by providing an optimal reverse rotation number when the twisted yarn is rotated to the extent of bending.

[0015] In order to achieve the above object, a medical twist thread insertion device according to the present invention is characterized by including: a main body including a needle having a hollow portion and an opening portion in which a tip of the hollow portion is open, a hub coupled to an end of the needle including a hub hollow portion communicating with the hollow portion; a twist thread that is twisted by rotating at least one end of both ends at a predetermined rotational speed and extending through the hub hollow portion and passing through the hollow portion and being exposed to the outside through the opening portion; a fixing ring that fixes the twist thread exposed to the outside to the outer circumferential surface of the needle; and a fitting portion that is inserted into the hub hollow portion and presses and fixes the twist thread within the hub hollow portion.

[0016] In addition, the fitting is characterized by having a cylindrical pipe shape with holes inside made of an elastic material.

[0017] In addition, the method for manufacturing the twist yarn insertion device is characterized by including an insertion step of inserting yarn into the main body so that the yarn is exposed to the outside from the hub hollow through the opening; a forming step of forming the yarn into a twist yarn by rotating one end at a constant rotational speed while fixing both ends of the yarn through a twist device; a fixing ring fixing step of fixing an externally exposed portion of the twist yarn to the outer circumference of the needle with a fixing ring; and a fitting fixing step of inserting a fitting into the hub hollow to press and fix the twist yarn within the hub hollow.

[0018] According to the medical twist thread insertion device and manufacturing method thereof according to the present invention,

[0019] 1) It has the advantage of being able to rotate the twisted yarn without separate forming equipment and then stably accommodate it within the needle while preventing the problem of it coming loose.

[0020] 2) It can effectively prevent the problem of the twisted thread being unnecessarily crushed by the pressure of the fitting part,

[0021] 3) Not only can the twist thread be fixed and smoothly detached by the reinforcing sheet laminated on the guide groove formed in the fitting part,

[0022] 4) It has the effect of ensuring the durability of the twisted yarn by providing a stable reverse rotation number in a bent state while counting the rotation of the twisted yarn.

[0023] Fig. 1 is a longitudinal cross-sectional view showing the structure of a medical thread insertion device of the present invention.

[0024] Figure 2 is a conceptual diagram illustrating a twisted yarn of the present invention.

[0025] Figure 3 is a conceptual diagram illustrating a structure in which a fitting part is inserted into the hub hollow.

[0026] Figure 4 is a flowchart illustrating steps for manufacturing a twisted yarn insertion device of the present invention.

[0027] Figure 5 is a conceptual diagram illustrating one embodiment of a twist device.

[0028] Fig. 6 is a cross-sectional view and a longitudinal cross-sectional view showing a structure in which a twisted thread is accommodated in a guide groove formed in a fitting portion.

[0029] Fig. 7 is a longitudinal cross-sectional view showing the structure of a reinforcing sheet laminated on a guide groove.

[0030] The present invention is best practiced in a form for carrying out the invention, comprising: a needle having a hollow portion and an opening portion in which the hollow portion has an open tip; a main body including a hub coupled to an end of the needle, the hub including a hollow portion connected to the hollow portion; at least one end of both ends being twisted by rotating at a predetermined number of rotations, the twisted thread extending through the hollow portion and the hollow portion and then passing through the opening portion and being exposed to the outside; a fixing ring fixing the twisted thread exposed to the outside to the outer circumferential surface of the needle; and a fitting portion inserted into the hollow portion of the hub to press and fix the twisted thread within the hollow portion of the hub.

[0031] 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 numbers in each drawing indicate like components.

[0032]

[0033] Fig. 1 is a longitudinal cross-sectional view showing the structure of a medical thread insertion device of the present invention.

[0034] As can be seen from FIG. 1, the insertion device of the present invention is basically composed of a main body (100) including a needle (110) and a hub (120), a twist thread (10), a fixing ring (200), and a fitting part (300).

[0035] The main body of the present invention has a structure similar to or identical to a cannula for a so-called lifting thread, and basically includes a needle (110) and a hub (120).

[0036] The needle (110) has an opening (112) that is open at least at one end, i.e., the tip, so that it communicates with the hollow (111) while having a hollow interior (111) like a known medical needle.

[0037] At this time, the tip of the needle (110) 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 cannula type needle widely used today, as shown in FIG. 1, and the tip-side opening (112) may be extended by partially cutting along the length of the outer surface of the cannula.

[0038] The rear end of the needle (110) can be combined with a hub (120) consisting of one or two stages to take on a structure that is the same as or similar to a syringe as a whole. When a practitioner such as a doctor manipulates the hub (120) by pressing it, the first and second threads combined with the needle (110) can be injected into the body.

[0039] As mentioned above, the hub (120) is connected to the end (rear end) of the needle (110) with a diameter or width at least larger than that of the needle (110), and the hub hollow (121) is formed in the same direction as the hollow (111) of the needle (110) and is connected to the hollow (111).

[0040] The twisted yarn (10) described later enters the hub hollow (121), passes through the hollow (111), and is exposed to the outside through the opening (112). In other words, the hub (120) not only serves as a handle, but also has the function of providing a path for the twisted yarn (10) to pass through.

[0041]

[0042] Figure 2 is a conceptual diagram illustrating a twisted yarn of the present invention.

[0043] As can be seen from FIG. 2, the twisted yarn (10) of the present invention can be made of a bioabsorbable material that is generally widely used as a material for current lifting yarns, such as polydioxanone, poly-L-lactic acid, or polycaprolactone.

[0044] The above-mentioned substances can be broken down and absorbed within living tissues, thereby minimizing side effects and allergic reactions, and can also promote collagen synthesis within living tissues.

[0045] In addition, these twisted yarns (10) are twisted by rotating at least one end of the yarn, that is, the yarn that is not twisted but extended in a straight line as in the known poem, at a certain number of rotations.

[0046] Here, 'twist' generally includes processes such as twisting, knotting, and winding, but in the present invention, a yarn that is twisted, that is, torsion-processed like a screw in which the yarn is twisted to form screw threads (ridges) (11) and valleys (12) is called a twist yarn (10).

[0047] The surface of the twisted yarn (10) is raised and depressed to form a curved shape, that is, the grooves (12) and the ridges (11) take on a structure in which they rotate several times in a spiral shape from the leading end to the trailing end.

[0048] At this time, the screw of the public notice has a short helix lead (the distance the screw thread moves in the axial direction when it turns around the axis once) so that the screw threads and grooves are formed in large numbers at narrow intervals, but the twisted main body has a longer helix lead than the screw of the public notice so that the grooves (12) and ridges (11) are formed in small numbers at wide intervals and are gently curved, thereby preventing the possibility that the twist thread (10) may be easily broken due to excessive twisting.

[0049] Furthermore, the twisted thread (10) has a characteristic of being able to improve traction force through a three-dimensional structure by having a relatively three-dimensional shape compared to known medical threads that have a smooth surface because they are not twisted.

[0050] Although not shown in the drawing, it is possible to form known protrusions, i.e. cogs, in various patterns and shapes on the surface of the twisted yarn (10), thereby further enhancing the traction and fixing force.

[0051] This twisted thread (10) is partially exposed to the outside through an opening from the hub hollow (121) through the hollow (111), and this exposed part to the outside is fixed with a fixing ring (200).

[0052] The fixed ring (200) provides a function of fixing the twisted yarn (10) exposed to the outside to the outer surface of the needle (110). In other words, the twisted yarn (10) exposed to the outside is inserted into the inner space of the fixed ring (200) and hung on the outer surface of the needle (110), so that the twisted yarn (10) is fixed to the outer surface of the needle (110) by the pressure of the fixed ring (200).

[0053] This fixing ring (200) not only prevents the problem of the tip of the twisted thread (10) coming loose, but is also easier to manufacture than a known knot, and does not unnecessarily increase the thickness of the thread, and when the needle (110) is inserted into the body tissue, it provides a path through which only the twisted thread (10) can be injected inside without the fixing ring (200) itself being injected into the body tissue. In other words, in the initial stage of the procedure for injecting the body tissue, the fixing ring (200) can be slightly pushed toward the body tissue, and the twisted thread (10) exposed to the outside can be stably injected into the body tissue.

[0054]

[0055] Figure 3 is a conceptual diagram illustrating a structure in which a fitting part is inserted into the hub hollow.

[0056] As mentioned above, the twisted yarn (10) of the present invention has a structure extending from the hub hollow (121) on the rear side of the main body to the opening (112) on the front side.

[0057] At this time, if the twisted yarn (10) is formed into a twist shape using a forming equipment, the shape becomes too complicated, which unnecessarily increases the cost of the forming equipment or makes forming difficult. Therefore, as mentioned above, at least one section of the yarn is twisted and rotated to produce the yarn.

[0058] The tip of the twisted yarn (10) manufactured in this way can be fixed with the above-described fixing ring (200) to prevent the problem of it coming loose while rotating in the opposite direction to the twisting direction. However, if there is no fixing means that can properly prevent the twisted yarn (10) from coming loose at the rear end of the twisted yarn (10), i.e., around the hub hollow (121), the problem of the rear end of the twisted yarn (10) coming loose may occur.

[0059] To solve this problem, as can be seen from FIG. 3, the insertion device of the present invention includes a fitting part (300) that is inserted into the hub hollow (121) and pressurizes and fixes the twist thread (10) within the hub hollow (121).

[0060] For reference, in Fig. 3, a structure in which a cover is placed on a needle (100) is depicted, making the diameter of the needle appear larger.

[0061] The fitting (300) is a structure having a diameter smaller than the diameter of the hub hollow (121). When it is fitted into the hub hollow (121), the rear end of the twisted thread (10) that was staying in the hub hollow (121) is pushed to the inner wall of the hub hollow (121), and the remaining space of the hub hollow (121) is occupied by the fitting (300).

[0062] In other words, the fitting part (300) provides a function to prevent rotation and fix the twisted thread (10) by fitting it between the inner wall of the hub hollow (121) and itself.

[0063] To briefly explain the procedure based on this, in the initial stage of the procedure in which the needle (110) is inserted into the body tissue, the fixing ring (200) is pushed so that the tip of the twist thread (10) is inserted into the body tissue, and then the needle (110) is pushed into the body tissue. In the final stage of the procedure in which the needle (110) is pulled out, the fitting part (300) is pulled out from the hole (310) of the hub (120), so that the rear end of the twist thread (10) can be stably inserted into the body tissue without coming loose.

[0064] According to this structure, the twisted yarn (10) is received in the main body and provides the characteristic of not being easily unraveled when injected into body tissue and being stably injected / injected into body tissue.

[0065]

[0066] Hereinafter, a process for manufacturing a twisted yarn (10) insertion device of the present invention based on the above-described structure is illustrated as follows.

[0067]

[0068] Figure 4 is a flowchart illustrating steps for manufacturing a twisted yarn insertion device of the present invention.

[0069] As can be seen from FIG. 4, the manufacturing process of the twist thread insertion device of the present invention can include an insertion step, a molding step, a fixing ring (200) fixing step, and a fitting part (300) fixing step.

[0070] The insertion step is a step of inserting yarn into the main body so that it is exposed from the hub hollow (121) through the opening (112). At this time, the yarn refers to a thread that is not twisted and is extended in a straight line as mentioned above.

[0071] The forming step refers to a step of forming the yarn into a twisted yarn (10) by rotating one end at a constant rotational speed while fixing both ends of the yarn through a twisting device (500).

[0072] At this time, the twist device (100) refers to a device that rotates the other end of the yarn while fixing one end, and can be implemented / manufactured by utilizing various known mechanical means, but an exemplary structure will be described below with reference to the subsequent drawing, FIG. 5.

[0073]

[0074] Figure 5 is a conceptual diagram illustrating one embodiment of a twist device.

[0075] As can be seen from FIG. 5, the twist device (500) of the present invention includes a fixed part (510) and a rotating part (520).

[0076] The fixed part (510) provides a function of holding and fixing the rear end of the twisted yarn (10), and includes a lifting means that is raised and lowered by the rotation of the operating part (513).

[0077] That is, the lifting means is composed of a support block (511) and an lifting block (512) positioned on the support block (511). When the operating unit (513) is rotated forward / reverse, the lifting block (512) is raised and lowered, and a space can be formed between the lifting block and the support block (511).

[0078] In other words, when the operating unit is operated so that a space is formed between the lifting block (512) and the support block (511), the rear end of the twist thread (10) is positioned in this space, and then the operating unit (513) is rotated so that the lifting block (512) descends and comes into close contact with the support block (511), so that there is no space or gap between the support block (511) and the lifting block (512), and as a result, the rear end of the twist thread (10) is fixed.

[0079] The rotating part (520) includes a rotating handle (521) and a rotating block (522) having a fixing hole.

[0080] Specifically, the fixed hole means a hole for fixing the tip of the yarn (or the tip of the needle depending on the situation), and the rotating block (522) means a structure that rotates by the rotation of the rotating handle (521) in a state where the fixed hole is formed.

[0081] That is, when the tip of the needle (110) containing the yarn or the tip of the yarn itself is inserted into the fixed hole and the worker rotates the rotation handle (521), the rotation block (522) rotates, thereby rotating the yarn and performing twist processing.

[0082] In the drawing, the rotary handle (521) is shown to be rotated manually by the worker, but it is also possible to install a mechanical means to automatically rotate the rotary handle (521) for the convenience of work.

[0083] Here, although not shown in the drawing, a stopper may be installed to prevent the tip of the yarn or the tip of the needle (110) from easily coming out of the fixed hole.

[0084] The number of rotations of the rotary handle (521) can be varied and processed in various ways depending on the characteristics of the treatment and the diameter of the yarn, but if it is less than 10 times based on a yarn with a normal diameter, the problem occurs that the twist yarn (10) is not rotated evenly from the front to the back due to insufficient rotations and is twisted with concentration at the front, and if it exceeds 25 times, the phenomenon of the twist yarn (10) itself being bent or crushed may occur due to excessive rotations, so it is preferably determined to be 10 to 25 times, and more preferably, it is rotated at 15 to 20 times to more efficiently solve the above-mentioned problem.

[0085] In particular, the reason for inserting the yarn into the hollow (111) of the needle (110) without first rotating it and then rotating it is because if the twist yarn (10) is formed while not inserted into the main body and then inserted into the needle (110), there is the hassle of having to prevent both the front and rear ends of the twist yarn (10) from unraveling. Therefore, the yarn is first inserted into the main body and then one end is fixed while the other end is rotated to form the twist yarn (10).

[0086] The fixing ring (200) fixing step fixes the externally exposed portion, which is the tip portion of the formed yarn, i.e., the twisted yarn (10), to the outer surface of the needle (110) with the fixing ring (200) to prevent unnecessary loosening of the tip portion of the twisted twisted yarn (10), and the fitting (300) fixing step inserts the fitting (300) into the hub hollow (121) to press and fix the twisted yarn (10) within the hub hollow (121), thereby preventing loosening of the rear portion of the twisted yarn (10).

[0087] According to this process, the burden of having to twist the yarn in advance and fix both ends and the hassle of fixing it to the main body (100) can be reduced, and the problem of the yarn easily coming loose after being twisted while being fixed to the main body (100) can be prevented.

[0088]

[0089] Furthermore, in the above-described process, the forming step may additionally include a counting step and a reverse rotation step.

[0090] The counting step refers to the step of counting the number of turns of the yarn.

[0091]

[0092] *Referring to FIG. 5, it can be seen that the twist device (500) includes a counting panel (530).

[0093] The counting panel (530) provides a function of displaying the number of rotations of the rotary handle (521) in a numerical value. In other words, the counting step means a step of counting the number of rotations of the rotary handle (521) while displaying the number of rotations of the rotary handle (521) in a numerical value in an easy-to-understand manner to prevent the operator from rotating the rotary handle (521) too little or too much in the twist device (500).

[0094] The reverse rotation step refers to the step of reversely rotating one end of the yarn in the direction opposite to the rotation direction according to the reverse rotation number set based on the counting number when the yarn is bent due to excessive rotation.

[0095] This reverse rotation step may result in the yarn being rotated at a preset rotation speed, i.e., a rotation speed that accidentally exceeds the reference rotation speed, or in the case where the yarn is twisted despite being rotated at the reference rotation speed, depending on the room humidity or the individual characteristics of the yarn.

[0096] For example, when the standard number of rotations is 15, it means that the yarn can be twisted even when it is rotated 17 times or even when it is rotated 15 times.

[0097] To prevent such problems, in the present invention, it is possible to preset the reverse rotation speed according to the high and low of the reference rotation speed. In other words, the higher the rotation speed, such as 10 or 15 times, the greater the tension applied to the yarn, so it is necessary to restore it again, that is, to reduce the rotation speed by reverse rotation and restore the bent yarn to a straight line as close to as possible.

[0098] At this time, the reverse rotation speed can be set based on the actual rotation speed rather than proportionally to the reference rotation speed. The mathematical formula 1 for this is as follows.

[0099] Mathematical formula 1.

[0100]

[0101] At this time, R is the number of decimal places of r discarded if r<1.65.

[0102] If r≥1.65, then the number of decimal places of r is raised

[0103] (R is the reverse rotation speed, s is the reference rotation speed, 15, c is the counting number)

[0104] This mathematical expression 1 is intended to prevent unnecessary reverse rotation by setting the reference rotation number to the minimum value, that is, 15, which is the smallest number among 15 to 20 rotations in the example described above, and then setting the reverse rotation number to 1 or 2 when the rotation has already reached 15 rotations, thereby preventing the yarn from being damaged as the reverse rotation number increases.

[0105] In particular, mathematical expression 1 provides a characteristic that can prevent the problem of the reverse rotation number itself unnecessarily increasing proportionally as the difference between the reference rotation number and the actual rotation number (i.e., the number of counting times) increases due to the hypertangent function, which is a nonlinear function.

[0106] For example, if the counting number c is 16,

[0107]

[0108] As r is less than 1.65, the number '1', which is the number of decimal places dropped, becomes the reverse rotation number R, and this remains the same when the counting number is 17 or 18, but when the counting number is 18 or more, the reverse rotation number R is set to '2'.

[0109] This mathematical formula is intended to prevent the problem of the reverse rotation number increasing along with the counting number by setting it to 1 or 2 rather than setting it too high when the counting number has already exceeded 15, but processing it non-linearly rather than proportionally from 15 to 20.

[0110] In summary, the reverse rotation step provides a foundation for forming a twisted yarn while preventing the yarn from being bent, while solving the problem of the yarn itself being damaged by the reverse rotation of the yarn by setting the reverse rotation number too high when the counting number is 15 or more, and preventing the yarn from being bent.

[0111]

[0112] Fig. 6 is a cross-sectional view and a longitudinal cross-sectional view showing a structure in which a twisted thread (10) is accommodated in a guide groove formed in a fitting portion (300).

[0113] The embodiment according to Fig. 6 illustrates three additional structures for the fitting (300), which will be described sequentially.

[0114] First, the fitting (300) can have a cylindrical pipe shape with a hole (310) inside and made of an elastic material.

[0115] If the fitting (300) is made of an inelastic material, there is a risk that the twisted portion (10) may be compressed excessively, causing the twisted portion to become crushed or flattened. In addition, if the shape is full to the inside, the above-described risk may be aggravated.

[0116] Therefore, by manufacturing the fitting part (300) with an elastic material, it is possible to provide a level of compression force that fixes the rear end of the twist thread (10) to the inner wall of the hub hollow (121) while having a kind of elasticity, and to solve the problem of compressing it flat.

[0117] In addition, the fitting part (300) has a hole (310) inside, so that it can take the shape of a tube or a circular pipe to increase elasticity, and thus it is possible to enhance the property of self-extension without transmitting weighted pressure to the twisted yarn (10).

[0118]

[0119] Additionally, as can be seen from the cross-sectional view of Fig. 6, the fitting portion (300) may include a guide groove (320) formed along the length direction to accommodate at least a portion of the twisted thread (10) on one side of the outer circumferential surface.

[0120] The guide groove (320) is a groove formed along the longitudinal direction, i.e., the extension direction of the twist thread (10), to reduce the possibility of the fitting part (300) being crushed by being pressed against the outer surface of the arc shape when the fitting part (300) has a cylindrical pipe shape, so as to accommodate at least part or all of the twist thread (10).

[0121] According to this guide home (320), it is possible to provide a characteristic that can temporarily accommodate a twisted thread (10) stably without distortion while preserving the twisted state.

[0122]

[0123] Also, referring to the cross-sectional view of Fig. 6, it can be seen that the fitting portion (300) is tapered so that the diameter becomes smaller as it extends from the end of the hub (120) hole (310) to the opposite end.

[0124] That is, the fitting part (300) can take on a kind of cone-shaped shape, and generally has a diameter corresponding to or slightly smaller than the diameter of the hub hollow (121). In particular, in order to prevent the twist thread (10) from unraveling, if the diameters of the two are almost similar, there is a concern that the fitting part (300) may not be inserted firmly as it enters the inside of the hub hollow (121) because there is no difference in diameter between the two.

[0125] Accordingly, the diameter of the fitting part (300) inside the hub hollow (121) is tapered like a truncated cone to make it smaller, thereby providing a foundation for the fitting part (300) to be inserted more easily into the hub hollow (121) while stably fixing the twist thread (10).

[0126] At the same time, as can be seen from the cross-sectional view of Fig. 6, the guide groove (320) is tapered so that its diameter increases as it extends from one end of the hub (120) hole (310) to the opposite end, thereby preventing the problem of the twist thread (10) not being properly accommodated in the guide groove due to the guide groove (320) not being properly found in the fitting portion (300) whose diameter decreases as it enters the hub hollow (121) as described above.

[0127] That is, the diameter of the guide groove (320) at the top of the fitting portion (300) with a reduced diameter is processed to be the widest, thereby providing a characteristic in which the twist thread (10) can be stably accommodated in the guide groove (320).

[0128]

[0129] Fig. 7 is a longitudinal cross-sectional view showing the structure of a reinforcing sheet laminated on a guide groove.

[0130] Referring to Fig. 7, it can be seen that a reinforcing sheet (400) is laminated on the surface of the guide groove (320).

[0131] This reinforcing sheet (400) has a length corresponding to the length of the surface of the guide groove (320), or is formed to be longer as shown in FIG. 7, which will be described later, and is made of a material having a lower coefficient of friction than the fitting portion (300).

[0132] That is, to prevent the twist thread (10) accommodated in the guide groove (320) from being easily trapped and unable to come out during the procedure within the guide groove (320), the insertion part (300), more specifically, the reinforcing sheet (400) made of a material more slippery than the surface of the guide groove (320), is processed so that the twist thread (10) accommodated in the guide groove (320) can slide smoothly and come out during the procedure.

[0133]

[0134] Furthermore, as can be seen from Fig. 7, the reinforcing sheet can be composed of a base (410) and a rounding extension (420).

[0135] The base (410) is a portion laminated to a length that matches the surface of the guide groove (320), and is made of a material with a lower coefficient of friction than the fitting portion (300) to provide the aforementioned jamming prevention function.

[0136] The rounding extension (420) is extended in the outer direction of the surface of the guide groove (320) while being rounded to wrap around a portion of the twist yarn (10) at each end of the base (410). It has a friction coefficient greater than that of the base (410) but a friction coefficient less than that of the fitting portion (300), and is a portion focused on the function of wrapping and holding a portion of the outer surface of the twist yarn (10).

[0137] That is, the rounding extension (420) is less slippery than the base (410) but more slippery than the fitting portion (300) (specifically, the surface of the guide groove), so that the twist thread (10) does not slide out of the guide groove (320) during the procedure, but provides a function of preventing the phenomenon of the twist thread (10) slipping from the base (410) and not being properly accommodated in the guide groove (320) when accommodated in the guide groove (320).

[0138] The above-described reinforcing sheet (400) provides a characteristic that can simultaneously satisfy two functions: accommodating the twist thread (10) in the guide groove (320) and allowing sliding movement during the procedure.

[0139]

[0140] As described so far, the configuration and operation of the medical twist thread (10) insertion device according to the present invention and the manufacturing method thereof have been expressed in the above description and drawings, but this is merely 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.

[0141] The medical thread insertion device of the present invention can be mass-produced and supplied to the medical field, and thus has industrial applicability.

Claims

1. As a medical twist thread insertion device, A body including a needle having a hollow portion and an open portion with an open tip of the hollow portion, and a hub coupled to the end of the needle, including a hub hollow portion communicating with the hollow portion; A twisted thread that is processed by rotating at least one end of both ends at a certain number of rotations, and extends through the hub hollow and the hollow and is exposed to the outside through the opening; A fixing ring that fixes the twisted yarn exposed to the outside to the outer surface of the needle; A twist thread insertion device characterized by including a fitting portion inserted into the hub hollow to press and fix the twist thread within the hub hollow.

2. In paragraph 1, The above fitting part is, A twist thread insertion device characterized by having a cylindrical pipe shape with holes inside as an elastic material.

3. In paragraph 2, The above fitting part is, A twist yarn insertion device characterized in that it includes a guide groove formed along the length direction to receive at least a portion of the twist yarn on one side of the outer circumference.

4. In paragraph 3, The above fitting part is, The diameter is tapered so that it becomes smaller as it extends from one end of the above hub hole to the opposite end. The above guide home is, A twist thread insertion device characterized in that the diameter thereof is tapered so that it increases as it extends from one end of the hub hole to the opposite end.

5. In paragraph 3, On the surface of the above guide groove, A twist thread insertion device characterized in that a reinforcing sheet having a lower coefficient of friction than the above-mentioned fitting part is laminated.

6. In paragraph 5, The above reinforcing sheet, A base laminated on the surface of the above guide groove, having a coefficient of friction smaller than that of the fitting portion, A twist thread insertion device characterized in that it includes a rounded extension portion extending in the outer direction of the surface of the guide groove while being rounded to surround a portion of the twist thread at each end of the base, and having a friction coefficient greater than that of the base but smaller than that of the fitting portion.

7. A method for manufacturing a twisted yarn insertion device according to Article 1, An insertion step of inserting yarn into the main body so that the yarn is exposed from the hollow hub to the outside through the opening; A forming step of forming the yarn into a twisted yarn by rotating one end at a constant rotational speed while fixing both ends of the yarn through a twisting device; A fixing ring fixing step for fixing the externally exposed portion of the above twisted yarn to the outer surface of the needle with a fixing ring; A method for manufacturing a twist thread insertion device, characterized in that it includes a fitting fixing step of inserting a fitting into the hub hollow to press and fix the twist thread within the hub hollow.

8. In paragraph 7, The above forming step is, A counting step for counting the number of turns of the above yarn, A method for manufacturing a twist yarn insertion device, characterized in that it includes a reverse rotation step of reversely rotating one end of the yarn in a direction opposite to the rotation direction according to a reverse rotation number set through the following mathematical expression 1 based on the counting number when the yarn is bent. Mathematical formula 1. R is the number of r with the decimal places discarded if r<1.65, If r≥1.65, then it is the number of decimal places raised to r. (R is the reverse rotation speed, s is the reference rotation speed, 15, c is the counting number)

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