A method and device for preparing a micro-hook with a fixed suspension belt

Abstract

The present invention discloses a method and device for preparing a micro-hook with a fixed function sling, which belongs to the field of medical sling manufacturing. The method and device for preparing a micro-hook with a fixed function sling of the present invention have a process flow including wire loop interruption, surface melt-blowing and cooling; the preparation device includes a wire loop interruption device, a melt-blowing device, a cooling device, a mesh unwinding device and a mesh winding device. The present invention organically combines wire loop interruption and melt-blowing processes, forming irregular fluff on the short burrs formed by wire loop interruption and the surface of the mesh, thereby increasing the friction of the mesh, improving the gripping force of the sling made of the mesh in the body, reducing the risk of the sling sliding on the tissue, and saving surgical time; in addition, due to the presence of melt-blown fluff, the requirements for the shape and size of the barbs on the short burrs are reduced, which can improve the efficiency and process flexibility of the wire loop interruption process, thereby helping to improve the overall production efficiency of the sling.

Description

Technical Field

[0001] The present invention relates to the field of manufacturing medical slings, and more particularly to a method and device for preparing micro-hooks of a sling with a fixing function. Background Art

[0002] At present, the most commonly used surgical treatment for urinary incontinence is the mid-urethral suspension correction method, which is one of the standard treatment methods for female stress urinary incontinence. It uses a guide handle to implant a thin mesh sling under the urethra, between the tissue gap under the urethra and the anterior wall of the vagina, which can correct and reduce the swing of the urethra. The implanted mesh sling can also play an elastic suspension support role through a certain viscosity and tissue reaction between it and the tissue.

[0003] Existing slings are mainly woven with materials such as polypropylene. Their surface is smooth and easily displaced and deformed after implantation, thus affecting the therapeutic effect. Providing micro hooks on the surface of one side of the sling mesh is an effective means to improve the grip of the sling and tissue. At present, slings with fixing functions are mainly made of mesh with micro hooks, which are also used in self-fixing hernia repair patches. Such as "patch braid with barbs and hernia repair mesh made thereof, and method for manufacturing the patch braid" with publication number CN104024508B, "A self-fixing medical patch mushroom head micro hook hot melt forming device" with publication number CN215020025U, etc. The micro hooks of these meshes mostly use high-temperature melting to melt the wire loops on the woven mesh to form a barb structure. However, the process stability of high-temperature melting is poor, which is mainly reflected in the large fluctuation of the melting temperature. At low temperatures, such as Figure 1 As shown in (a), the leakage phenomenon is serious, resulting in a decrease in the number of micro hooks formed; at high temperatures, as shown in Figure 1 As shown in (b), the wire loops are severely wiredrawn, the microhooks are of varying shapes and sizes, and the mushroom-shaped tips are smooth, resulting in low friction. These conditions all lead to weak overall mesh grip and poor self-fixation performance. Therefore, the high-temperature melting process requires very strict temperature control, and the quality of the resulting microhooks varies greatly. Summary of the Invention

[0004] 1. Technical problem to be solved by the invention

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings of the existing micro-hook preparation process of the sling, and to provide a micro-hook preparation method and preparation device for a sling with a fixing function. The technical solution of the present invention is adopted to organically combine the wire loop interruption and the melt-blowing process, and form irregular fluff on the short burrs formed by the wire loop interruption and the surface of the mesh, thereby increasing the friction of the mesh, improving the gripping force of the sling made of the mesh in the body, reducing the risk of the sling sliding on the tissue, reducing the suturing and fixation of the sling during surgery, and saving surgical time; in addition, due to the presence of melt-blown fluff, the requirements for the shape and size of the barbs on the short burrs are reduced, which can improve the efficiency and process flexibility of the wire loop interruption process, and thus help to improve the overall production efficiency of the mesh and the sling.

[0006] 2. Technical solution

[0007] In order to achieve the above object, the technical solution provided by the present invention is:

[0008] The present invention provides a method for preparing a micro-hook with a fixing function suspension belt, comprising the following steps:

[0009] S1. Wire loop breaking: One side of the mesh is provided with wire loops, and the wire loop breaking device is used to break the wire loops of the mesh from the middle, so that two short burrs are formed after each wire loop is broken;

[0010] S2. Surface meltblowing: using a meltblowing device to meltblown onto the surface of the mesh with short burrs to form irregular fluff, the fluff adheres to the short burrs and the surface of the mesh;

[0011] S3, cooling: cooling the mesh after meltblowing in step S2 by using a cooling device or natural cooling to solidify the fluff.

[0012] Furthermore, the wire loop breaking device is a laser cutting machine, a high-temperature melting machine, a cutting machine, or a grinding machine.

[0013] Furthermore, the meltblown material in step S2 is the same as the material of the mesh.

[0014] Furthermore, the wire loop breaking device in step S1 melts the wire loop by high temperature and melts the ends of the short burrs to form barbs.

[0015] Furthermore, the mesh passes through the wire loop breaking device, the melt blowing device and the cooling device in sequence, and the mesh moves continuously or intermittently between the wire loop breaking device, the melt blowing device and the cooling device to complete the wire loop breaking, surface melt blowing and cooling processes in sequence.

[0016] Furthermore, the mesh is woven by a weaving machine, and the mesh woven by the weaving machine directly enters the wire loop breaking device, the melt-blowing device and the cooling device, and the processed mesh is collected by the winding device.

[0017] The present invention provides a micro-hook preparation device with a fixed suspension belt, comprising a wire loop breaking device, a melt-blowing device, a cooling device, a mesh unwinding device, and a mesh winding device. The wire loop breaking device, the melt-blowing device, and the cooling device are sequentially arranged between the mesh unwinding device and the mesh winding device. The rolled mesh is installed on the mesh unwinding device, and one end of the mesh is sequentially wound around the wire loop breaking device, the melt-blowing device, and the cooling device before being connected to the mesh winding device. One side of the mesh is provided with a wire loop. The mesh moves under the action of the mesh unwinding device and the mesh winding device; the wire loop breaking device is used to break the wire loop of the mesh from the middle, and two short burrs are formed after each wire loop is broken; the meltblowing device has a meltblowing die head that is controlled to move along the X-axis and Y-axis directions, and the meltblowing die head is used to meltblown onto the surface of the mesh with short burrs to form irregular fluff, and the fluff adheres to the short burrs and the surface of the mesh; the cooling device is used to cool the mesh after meltblowing to solidify the fluff.

[0018] Furthermore, in the meltblowing device, the meltblowing die head is installed on an XY-axis moving mechanism, a bracket is provided below the meltblowing die head, a transmission mechanism is provided on the bracket, and a height adjustment mechanism for adjusting the height of the transmission mechanism is also provided at the lower part of the bracket; during meltblowing, the moving speed of the mesh on the transmission mechanism is 3 to 10 mm / s, the reciprocating movement speed of the meltblowing die head in the X-axis direction is 3 to 10 mm / s, the reciprocating movement speed in the Y-axis direction is 0.5 to 5 mm / s, and the reciprocating movement amplitude in the Y-axis direction is 3 to 10 mm.

[0019] Furthermore, the meltblowing die head is evenly distributed with a plurality of melt channels along the Y-axis direction, the melt channels are connected to the melt barrel, and the meltblowing die head is also provided with hot air channels on both sides of the melt channels, and the hot air channels are connected to the hot air conveying device.

[0020] Furthermore, the wire loop breaking device is a laser cutting machine, comprising a laser cutting head, a support plate, a guide roller and a Y-axis moving mechanism. The mesh is tensioned on the support plate arranged along the Y-axis through the guide roller. The contact end of the support plate and the mesh is a pointed angle structure, so that the mesh located at the pointed angle of the support plate is in a "<" shape. The laser cutting head is installed on the Y-axis moving mechanism, and the Y-axis moving mechanism drives the laser cutting head to move along the pointed angle of the support plate to cut off the wire loop on the mesh; when laser cutting the wire loop, the moving speed of the mesh on the support plate is 3 to 10 mm / s, the input power of the laser cutting head is controlled at 10 to 30 W, the Y-axis reciprocating moving speed is controlled at 10 to 30 mm / s, and the Y-axis cutting stroke of the laser cutting head is 250 to 450 mm.

[0021] 3. Beneficial effects

[0022] Compared with the existing known technologies, the technical solution provided by the present invention has the following significant effects:

[0023] (1) The present invention provides a method and device for preparing a micro-hook with a fixed suspension belt, the process of which includes wire loop interruption, surface melt-blowing and cooling. By organically combining the wire loop interruption and the melt-blowing process, irregular hairs are formed on the short burrs formed by the wire loop interruption and the surface of the mesh, thereby increasing the friction of the mesh and improving the gripping force of the suspension belt made of the mesh in the body, reducing the risk of the suspension belt sliding on the tissue, reducing the need for suturing and fixing the suspension belt during surgery, and saving surgical time. In addition, due to the presence of the melt-blown hairs, the requirements for the shape and size of the barbs on the short burrs are reduced, which can improve the efficiency and process flexibility of the wire loop interruption process, thereby helping to improve the overall production efficiency of the mesh and the suspension belt.

[0024] (2) The present invention provides a method for preparing a micro-hook with a fixed suspension belt, wherein the wire loop breaking device can be a laser cutting machine, a high-temperature melting machine, a cutting machine, or a grinding machine. The wire loop can be melted by high temperature, or mechanically cut or ground to break the wire loop. The equipment selection is flexible, which is conducive to improving the stability and efficiency of wire loop breaking and reducing production costs.

[0025] (3) The present invention provides a method for preparing a micro-hook with a fixed suspension belt, wherein the meltblown material is the same as the material of the mesh, which can better combine the meltblown fluff with the mesh; when the mesh is made of absorbable material, the fluff is also absorbable material, which can be degraded and absorbed in the body, reducing the foreign body sensation of the mesh in the body;

[0026] (4) A method for preparing a micro-hook with a fixed sling of the present invention, wherein the wire loop breaking device melts the wire loop at high temperature and melts the end of the short burr to form a barb, which also has melt-blown fluff, can increase the size and surface friction of the barb, further improving the grip of the sling and tissue;

[0027] (5) The present invention provides a method for preparing a micro-hook with a fixed functional suspension belt, wherein the mesh passes through a wire loop breaking device, a melt-blowing device, and a cooling device in sequence, and the mesh moves continuously or intermittently between the wire loop breaking device, the melt-blowing device, and the cooling device to complete the wire loop breaking, surface melt-blowing, and cooling processes in sequence, thereby making the production of the mesh more continuous and improving the production efficiency; further, the mesh is woven by a weaving machine, and the mesh woven by the weaving machine can directly enter the wire loop breaking device, the melt-blowing device, and the cooling device, and the processed mesh is collected by a winding device, which reduces the intermediate winding and unwinding process, can further improve the production efficiency, and reduce the mesh loss;

[0028] (6) The present invention relates to a micro-hook preparation device with a fixed functional suspension belt, wherein the meltblowing die head is mounted on an XY axis moving mechanism, a bracket is provided below the meltblowing die head, a transmission mechanism is provided on the bracket, and a height adjustment mechanism for adjusting the height of the transmission mechanism is provided at the bottom of the bracket. The meltblowing effect can be ensured by adjusting the meltblowing distance, and the meltblowing uniformity can be improved by coordinating the X-axis and Y-axis reciprocating movements of the meltblowing die head;

[0029] (7) The present invention provides a micro-hook preparation device with a fixed functional suspension belt, wherein a plurality of melt channels are evenly distributed along the Y-axis direction on the meltblowing die head, the melt channels are connected to the melt barrel, and the meltblowing die head is also provided with hot air channels located on both sides of the melt channels, the hot air channels are connected to the hot air conveying device, and the negative pressure suction force generated by high-pressure hot air passing through the meltblowing die head is used to absorb the melt material, and the high-pressure hot air blows the melt material to make it diverge and spray outward, which is beneficial to improving the meltblowing uniformity and the irregularity of the formed villi. At the same time, the high-pressure hot air can maintain the temperature of the meltblowing die head, ensure the fluidity of the melt material, and prevent the melt channel from being blocked;

[0030] (8) The present invention provides a micro-hook preparation device with a fixed functional suspension belt, and its wire loop breaking device is a laser cutting machine, including a laser cutting head, a support plate, a guide roller and a Y-axis moving mechanism. The laser cutting machine has a faster cutting speed and more complete and stable wire loop breaking. In combination with the melt-blowing process, the power of laser cutting can be reduced, which is beneficial to reducing the risk of cutting the mesh matrix and ensuring the stability of the mesh processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of a self-fixing micro hook formed by an existing high-temperature melting process;

[0032] Figure 2 This is a process flow chart of a method for preparing a micro-hook with a fixed suspension belt according to the present invention;

[0033] Figure 3 A schematic structural diagram of a self-fixing micro-hook formed by a method for preparing a micro-hook with a fixing function sling according to the present invention;

[0034] Figure 4 This is a schematic structural diagram of a micro-hook preparation device with a fixed suspension belt according to the present invention;

[0035] Figure 5 It is a structural schematic diagram of the melt-blowing device in the present invention;

[0036] Figure 6 Schematic diagram of the meltblowing structure of the meltblowing die head in the present invention;

[0037] Figure 7 Schematic diagram of the three-dimensional structure of the meltblowing die head in the present invention;

[0038] Figure 8 This is a structural principle diagram of using a laser cutting machine to break the wire loop in the present invention.

[0039] Explanation of the numbers in the schematic diagram:

[0040] 100, mesh; 101, wire loop; 102, short burr; 103, fluff; 104, barb;

[0041] 200, wire loop breaking device; 201, laser cutting head; 202, support plate; 203, guide roller; 204, Y-axis moving mechanism;

[0042] 300, meltblowing device; 301, meltblowing die head; 301a, melt channel; 301b, hot air channel; 302, XY axis moving mechanism; 303, bracket; 304, transmission mechanism; 305, height adjustment mechanism; 306, melt barrel;

[0043] 400. Cooling device;

[0044] 500, mesh unwinding device;

[0045] 600. Mesh reeling device. DETAILED DESCRIPTION

[0046] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments.

[0047] [Example]

[0048] Combine Figure 2 As shown, a method for preparing a micro-hook with a fixed suspension belt in this embodiment includes the following steps:

[0049] S1. Wire loop interruption: One side of the mesh 100 is provided with wire loops 101, which are woven together during the mesh weaving process. The wire loop interruption device 200 is used to interrupt the wire loops 101 of the mesh 100 from the middle, so that each wire loop 101 is broken to form two short burrs 102; the side with the short burrs 102 is the self-fixing side of the mesh 100;

[0050] S2, surface melt-blowing: using the melt-blowing device 300 to melt-blown the surface of the mesh 100 with short burrs 102 to form irregular fluff 103, and the fluff 103 adheres to the short burrs 102 and the surface of the mesh 100;

[0051] S3. Cooling: The meltblown mesh 100 in step S2 is cooled using a cooling device 400 or natural cooling to solidify the hairs 103. The hardened hairs 103 increase the surface roughness of the mesh 100 and the short burrs 102, forming a plurality of tiny barb structures. A sling with a fixing function is fabricated using the mesh 100 prepared in steps S1 to S3.

[0052] Compared with the existing method for preparing micro-hooks with fixed-function slings, the method for preparing micro-hooks with fixed-function slings in this embodiment organically combines the wire loop interruption and the melt-blowing process, and forms irregular fluff on the short burrs formed by the wire loop interruption and the surface of the mesh, thereby increasing the friction of the mesh, improving the gripping force of the prepared sling in the body, reducing the risk of the sling sliding on the tissue, reducing the suturing and fixation of the sling during surgery, and saving surgical time; in addition, due to the presence of melt-blown fluff, the requirements for the shape and size of the barbs on the short burrs are reduced, which can improve the efficiency and process flexibility of the wire loop interruption process, and thus help to improve the overall production efficiency of the mesh and the sling.

[0053] The wire loop breaking device 200 can be implemented in a variety of ways, and only needs to disconnect the wire loop 101. In this embodiment, the wire loop breaking device 200 can be a laser cutting machine, a high-temperature melting machine, a shearing machine, or a grinder, among others. The laser cutting machine or the high-temperature melting machine are both high-temperature melting processes, and the shearing machine or the grinder are both mechanical breaking processes. The laser cutting machine uses the heat energy of the laser beam to break the wire loop 101, the high-temperature melting machine uses a high-temperature ironing plate or high-temperature metal wire to burn the wire loop 101, the shearing machine uses a high-speed rotating blade to cut the wire loop 101, and the grinder uses a high-speed moving grindstone or grinding belt to grind the wire loop 101. Specifically, the wire loop breaking device 200 can be selected according to the process requirements. It can use high temperature to melt the wire loop, or it can use mechanical cutting or grinding to break the wire loop. The equipment selection is flexible, which is conducive to improving the stability and efficiency of wire loop interruption and reducing production costs.

[0054] In this embodiment, the meltblown material in step S2 is the same as the material of the mesh 100, which can better bond the meltblown fluff 103 to the mesh 100. For the mesh 100 mixed with absorbable monofilaments and non-absorbable monofilaments, the meltblown material is preferably made of the same absorbable material, for example, polypropylene or other absorbable materials, so that the mesh 100 can be partially degraded and absorbed in the body, reducing the foreign body sensation of the suspension mesh in the body.

[0055] As a preferred embodiment, the wire loop breaking device 200 in the above step S1 melts the wire loop 101 by high temperature, and melts the end of the short burr 102 to form a barb 104. Specifically, a laser cutting machine or a high-temperature melting machine can be used. When the wire loop 101 is broken, the high temperature will cause the end of the short burr 102 to melt and shrink, forming a barb 104 with an increased size at the end of the short burr 102 (such as Figure 3 During the meltblowing process, irregular hairs 103 are also attached to the barbs 104. These hairs 103 further increase the size and surface friction of the barbs 104, thereby further improving the grip of the sling mesh and tissue.

[0056] In this embodiment, the mesh 100 passes through the wire loop breaking device 200, the melt-blowing device 300 and the cooling device 400 in sequence. The mesh 100 moves continuously or intermittently between the wire loop breaking device 200, the melt-blowing device 300 and the cooling device 400 to complete the wire loop breaking, surface melt-blowing and cooling processes in sequence, making the production of the suspension belt mesh more continuous and improving production efficiency. The mesh 100 with the wire loop 101 can be an existing rolled mesh purchased from a supplier, or it can be directly woven by a weaving machine (such as a warp knitting machine). In a feasible embodiment, the mesh 100 is woven by a weaving machine, and the mesh 100 woven by the weaving machine directly enters the wire loop breaking device 200, the melt-blowing device 300 and the cooling device 400. The processed mesh 100 is collected by the winding device, which reduces the intermediate winding and unwinding process, can further improve production efficiency, and reduce mesh loss.

[0057] This embodiment also discloses a micro-hook manufacturing device with a fixed functional sling, which is manufactured using the above-mentioned micro-hook manufacturing method. Figure 4As shown, the micro-hook preparation device with a fixed function suspension belt of this embodiment includes a wire loop breaking device 200, a melt-blowing device 300, a cooling device 400, a mesh unwinding device 500 and a mesh winding device 600. The wire loop breaking device 200, the melt-blowing device 300 and the cooling device 400 are sequentially arranged between the mesh unwinding device 500 and the mesh winding device 600. The rolled mesh 100 is installed on the mesh unwinding device 500, and one end of the mesh 100 is sequentially wound around the wire loop breaking device 200, the melt-blowing device 300 and the cooling device 400 and then connected to the mesh winding device 600; one side of the mesh 100 is provided with a wire loop 101, and the mesh 100 is on the mesh. The unwinding device 500 moves under the action of the mesh winding device 600; the wire loop breaking device 200 is used to break the wire loop 101 of the mesh 100 from the middle, and each wire loop 101 is broken to form two short burrs 102; the meltblowing device 300 has a meltblowing die head 301 that is controlled to move along the X-axis and Y-axis directions, and the meltblowing die head 301 is used to meltblown onto the surface of the mesh 100 with short burrs 102 to form irregular fluff 103, and the fluff 103 adheres to the short burrs 102 and the surface of the mesh 100; the cooling device 400 is used to cool the mesh 100 after meltblowing to solidify the fluff 103, and the finished suspension belt mesh is wound on the mesh winding device 600. During operation, the mesh unwinding device 500 unwinds while the mesh rewinding device 600 rewinds, so that the mesh 100 moves at a certain speed on the wire loop breaking device 200, the melt-blowing device 300 and the cooling device 400 in sequence. The mesh 100 first passes through the wire loop breaking device 200 to break the wire loop 101 to form short burrs 102, and then melt-blown the surface at the melt-blowing device 300 to form a self-fixing surface with fluff 103. After that, the fluff 103 is solidified after cooling by the cooling device 400 and is firmly bonded to the mesh 100 and the short burrs 102.

[0058] Reference Figure 5As shown, in the meltblowing device 300, the meltblowing die head 301 is installed on an XY-axis moving mechanism 302, and the XY-axis moving mechanism 302 can drive the meltblowing die head 301 to move in the X-axis and Y-axis directions. The XY-axis moving mechanism 302 can specifically adopt a ball screw transmission mechanism, and the movement in the X-axis and Y-axis directions can be independently controlled; a bracket 303 is provided below the meltblowing die head 301, and a transmission mechanism 304 is provided on the bracket 303. The transmission mechanism 304 can be a belt conveyor mechanism, which can drive the mesh 100 to move horizontally. The lower part of the bracket 303 is also provided with a height adjustment mechanism 305 for adjusting the height of the transmission mechanism 304. The height adjustment mechanism 305 can also adopt a structure such as an adjusting screw, which can ensure the meltblowing effect by adjusting the meltblowing distance, and cooperate with the reciprocating movement of the X-axis and Y-axis of the meltblowing die head 301 to improve the meltblowing uniformity. During meltblowing, the moving speed of the mesh 100 on the transmission mechanism 304 is 3 to 10 mm / s, the reciprocating moving speed of the meltblowing die head 301 in the X-axis direction is 3 to 10 mm / s, the reciprocating moving speed in the Y-axis direction is 0.5 to 5 mm / s, and the reciprocating movement amplitude in the Y-axis direction is 3 to 10 mm. In this way, the reciprocating movement of the meltblowing die head 301 can be used to fully meltblown the mesh to ensure meltblowing uniformity.

[0059] Combine Figure 6 and Figure 7 As shown, the meltblowing die head 301 is evenly distributed with several melt channels 301a along the Y-axis direction. The melt channels 301a are connected to the melt barrel 306. The meltblowing die head 301 is also provided with hot air channels 301b located on both sides of the melt channels 301a. The hot air channels 301b are connected to the hot air conveying device. The melt barrel 306 can melt the meltblown material into a fluid state. The negative pressure suction generated by the meltblowing die head 301 is used to absorb the melt material, and the high-pressure hot air purges the melt material to cause it to diverge and spray outward, which is conducive to improving the uniformity of the meltblowing and the irregularity of the fluff formed. At the same time, the high-pressure hot air can maintain the temperature of the meltblowing die head 301, ensure the fluidity of the melt material, and prevent the melt channel from being blocked. The hot air channels 301b on both sides are tilted, which can enable the meltblowing die head 301 to spray in a fan-shaped manner, increasing the meltblowing area and uniformity.

[0060] like Figure 4 and Figure 8As shown, in this embodiment, the wire loop breaking device 200 is preferably a laser cutting machine, including a laser cutting head 201, a support plate 202, a guide roller 203 and a Y-axis moving mechanism 204. The mesh 100 is tensioned on the support plate 202 set along the Y-axis through the guide roller 203. The contact end of the support plate 202 and the mesh 100 is a sharp angle structure, so that the mesh 100 located at the sharp angle position of the support plate 202 is in a "<" shape, so that the wire loop 101 at the sharp angle position can be separated from the wire loop 101 at other positions, so that the wire loop 101 can keep expanding in the cutting direction; the laser cutting head 201 is installed on On the Y-axis moving mechanism 204, the Y-axis moving mechanism 204 can also adopt a ball screw transmission mechanism, and the Y-axis moving mechanism 204 drives the laser cutting head 201 to move along the sharp corner position of the support plate 202 to cut off the wire loop 101 on the mesh 100; when the laser cuts the wire loop 101, the moving speed of the mesh 100 on the support plate 202 is 3 to 10 mm / s, the input power of the laser cutting head 201 is controlled at 10 to 30 W, the Y-axis reciprocating speed is controlled at 10 to 30 mm / s, and the Y-axis cutting stroke of the laser cutting head 201 is 250 to 450 mm. The use of the above-mentioned laser cutting machine has a faster cutting speed, and the wire loop is interrupted more completely and stably. In combination with the melt-blown process, the power of the laser cutting can be reduced, which is beneficial to reduce the risk of cutting the mesh substrate and ensure the processing quality stability of the suspension belt mesh.

[0061] In this embodiment, the temperature for cooling the meltblown mesh 100 can be controlled at 0-25° C., and can be cooled naturally or by using a cooling device 400. When cooling by using the cooling device 400, a cooling channel for the mesh 100 to pass through can be provided on the cooling device 400. The cooling channel has a plurality of air inlets connected to a blast device, and the meltblown mesh 100 is quickly cooled by air cooling, so that the fluff 103 can be quickly shaped.

[0062] The present invention provides a method and device for preparing a micro-hook with a fixing function sling, which organically combines wire loop interruption and meltblowing process to form irregular hairs on the short burrs formed by wire loop interruption and the surface of the mesh, thereby increasing the friction of the mesh, improving the gripping force of the sling made of the mesh in the body, reducing the risk of the sling mesh sliding on the tissue, reducing the suturing and fixation of the sling during surgery, and saving surgical time; in addition, due to the presence of meltblown hairs, the requirements for the shape and size of the barbs on the short burrs are reduced, which can improve the efficiency and process flexibility of the wire loop interruption process, and thus help to improve the overall production efficiency of the mesh and the sling.

[0063] In addition, the mesh produced by the above-mentioned micro-hook preparation method and preparation device can be used not only to make urinary incontinence slings, but also to make medical patches such as hernia repair patches.

[0064] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without creatively designing them, they shall fall within the scope of protection of the present invention.

Claims

1. A micro-hook preparation device with a fixed suspension belt, characterized by: The invention comprises a wire loop breaking device (200), a melt-blowing device (300), a cooling device (400), a mesh unwinding device (500) and a mesh rewinding device (600), wherein the wire loop breaking device (200), the melt-blowing device (300) and the cooling device (400) are sequentially arranged between the mesh unwinding device (500) and the mesh rewinding device (600), a rolled mesh (100) is mounted on the mesh unwinding device (500), and one end of the mesh (100) is sequentially wound around the wire loop breaking device (200), the melt-blowing device (300) and the cooling device (400) and then connected to the mesh rewinding device (600); one side of the mesh (100) is provided with a wire loop (101), and the mesh (100) is connected to the mesh rewinding device (600) during the mesh unwinding. The mesh (100) moves under the action of the device (500) and the mesh winding device (600); the wire loop breaking device (200) is used to break the wire loop (101) of the mesh (100) from the middle, and each wire loop (101) forms two short burrs (102) after being broken; the melt-blowing device (300) has a melt-blowing die head (301) that is controlled to move along the X-axis and Y-axis directions, and the melt-blowing die head (301) is used to melt-blown the surface of the mesh (100) with the short burrs (102) to form irregular fluff (103), and the fluff (103) adheres to the short burrs (102) and the surface of the mesh (100); the cooling device (400) is used to cool the mesh (100) after melt-blowing to solidify the fluff (103); In the meltblowing device (300), the meltblowing die head (301) is installed on an XY axis moving mechanism (302), a bracket (303) is provided below the meltblowing die head (301), a transmission mechanism (304) is provided on the bracket (303), and a height adjustment mechanism (305) for adjusting the height of the transmission mechanism (304) is further provided at the bottom of the bracket (303); during meltblowing, the moving speed of the mesh (100) on the transmission mechanism (304) is 3-10 mm / s, the reciprocating moving speed of the meltblowing die head (301) in the X-axis direction is 3-10 mm / s, the reciprocating moving speed in the Y-axis direction is 0.5-5 mm / s, and the reciprocating moving amplitude in the Y-axis direction is 3-10 mm; The meltblowing die head (301) is provided with a plurality of melt channels (301a) evenly distributed along the Y-axis direction, and the melt channels (301a) are connected to the melt barrel (306). The meltblowing die head (301) is also provided with hot air channels (301b) located on both sides of the melt channels (301a), and the hot air channels (301b) are connected to the hot air conveying device.

2. The micro-hook preparation device with a fixed suspension belt according to claim 1, characterized in that: The wire loop breaking device (200) is a laser cutting machine, comprising a laser cutting head (201), a support plate (202), a guide roller (203) and a Y-axis moving mechanism (204). The mesh (100) is tensioned on the support plate (202) arranged along the Y-axis via the guide roller (203). The contact end of the support plate (202) and the mesh (100) is a sharp angle structure, so that the mesh (100) located at the sharp angle of the support plate (202) is in a "<" shape. The laser cutting head (201) is mounted on the Y-axis moving mechanism (204). The moving mechanism (204) drives the laser cutting head (201) to move along the sharp corner position of the support plate (202) to cut the wire loop (101) on the mesh (100); when the wire loop (101) is laser cut, the moving speed of the mesh (100) on the support plate (202) is 3-10 mm / s, the input power of the laser cutting head (201) is controlled at 10-30 W, the Y-axis reciprocating moving speed is controlled at 10-30 mm / s, and the Y-axis cutting stroke of the laser cutting head (201) is 250-450 mm.

3. A method for preparing a micro-hook with a fixed suspension belt, characterized in that: The micro-hook preparation device with a fixed sling according to claim 1 comprises the following steps: S1, wire loop breaking: a mesh (100) has a wire loop (101) on one side, and a wire loop breaking device (200) is used to break the wire loop (101) of the mesh (100) from the middle, so that each wire loop (101) is broken to form two short burrs (102); S2, surface melt-blowing: using a melt-blowing device (300) to melt-blown the surface of the mesh (100) with short burrs (102) to form irregular fluff (103), wherein the fluff (103) adheres to the surface of the short burrs (102) and the mesh (100); S3. Cooling: Cooling the mesh (100) melt-blown in step S2 by using a cooling device (400) or natural cooling to solidify the fluff (103).

4. The method for preparing a micro-hook with a fixing function sling according to claim 3, characterized in that: The wire loop breaking device (200) is a laser cutting machine, a high-temperature melting machine, a cutting machine, or a grinding machine.

5. The method for preparing a micro-hook with a fixing function sling according to claim 3, characterized in that: The meltblown material in step S2 is the same as the material of the mesh (100).

6. The method for preparing a micro-hook with a fixing function sling according to claim 3, characterized in that: In step S1, the wire loop breaking device (200) melts the wire loop (101) by high temperature, and melts the end of the short burr (102) to form a barb (104).

7. The method for preparing a micro-hook with a fixing function sling according to claim 3, characterized in that: The mesh (100) passes through a wire loop breaking device (200), a melt-blowing device (300), and a cooling device (400) in sequence. The mesh (100) moves continuously or intermittently between the wire loop breaking device (200), the melt-blowing device (300), and the cooling device (400) to sequentially complete the wire loop breaking, surface melt-blowing, and cooling processes.

8. The method for preparing a micro-hook with a fixing function sling according to claim 7, characterized in that: The mesh (100) is woven by a weaving machine. The mesh (100) woven by the weaving machine directly enters a wire loop breaking device (200), a melt-blowing device (300), and a cooling device (400). The processed mesh (100) is collected by a mesh winding device (600).

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