Integrated injection molding equipment for barbed medical sutures

Abstract

The present invention belongs to the technical field of suture production, and in particular, relates to an integrated injection molding device for medical sutures with barbs, including a softening component, a cutting component, and a shaping component, etc. The softening component is used to soften a flat wire, the cutting component is used to stagger barbs on both sides of the softened flat wire, and the shaping component is used to round and shape the flat wire that has been processed with barbs. The present invention heats and softens the flat wire by the softening component, so that the cutter in the cutting component is more likely to cut barbs on the wire, and the strength requirements of the cutter are relatively low. At the same time, because the cutter cuts and processes barbs on the softened wire, the first electric push rod that drives the cutter only needs to consume less electricity and provide less power to achieve effective cutting of the wire by the cutter, thereby minimizing the volume of the first electric push rod as a driving structure, and effectively reducing the equipment cost on the basis of ensuring the demand.

Description

Technical Field

[0001] The invention belongs to the technical field of suture production, and in particular relates to an integrated injection molding device for medical sutures with barbs. Background Art

[0002] Barbed medical sutures can achieve the effect of not having to tie knots after completing wound suturing. Barbed medical sutures have been widely used in hospitals.

[0003] In the patent with the published application number 202410752866.1, the processing of barbed sutures requires first passing the thin round wire through an extruder, and then directly processing the barbs on the thin round wire. Due to the inaccurate processing positioning of the wire, the processing is difficult, so in order to reduce the difficulty of barb processing on the wire, it is necessary to first flatten the round wire into a wire with an elliptical cross-section, and then use a cutting tool to cut out the barbs on the thinner edges on both sides of the flat wire. Due to the high hardness and strength of the wire, the cutting tool is required to be not only sharp but also have sufficient strength, and a cutting drive structure needs to be set up to provide sufficient power for the cutting tool, which results in a larger overall size of the equipment.

[0004] In addition, since the barbs are processed on the flattened wire, such as Fig.23 As shown, the suture formed by the flat wire after the barb processing has a large difference in the bending resistance in the thin direction and the thick direction, which makes it difficult to easily route the suture as needed during the wound suturing process and causes secondary damage due to different degrees of severe pulling on the wound.

[0005] The present invention designs an energy-saving reheating device, which realizes the softening of the wire material, improves the barb processing structure for the softened wire material, and adds a structure for rounding the flat suture thread that is still in a softened state after the barb processing is completed to solve the above problems. Summary of the invention

[0006] Based on this, it is necessary to provide an integrated injection molding device for medical sutures with barbs in response to the problems existing in the current barbed suture molding equipment. The present invention heats and softens the flat wire by a softening component, so that the cutter in the cutting component is easier to cut barbs on the wire, and the strength requirements of the cutter are relatively low. At the same time, since the cutter cuts and processes the barbs on the softened wire, the first electric push rod driving the cutter only needs to consume less electric energy to provide less power to achieve the effective cutting of the wire by the cutter, thereby minimizing the volume of the first electric push rod as a driving structure, and effectively reducing the equipment cost on the basis of ensuring the demand. The present invention uses a shaping component to round the flat wire that has been processed by the cut component and is still in a softened state, so that the cross-section of the suture finally formed is close to a circle, thereby making the bending resistance of the barbed suture finally formed in any direction uniform, so that the suture can be flexibly routed as needed during use to suture the wound, improve the user experience of the suture, and avoid or reduce the secondary trauma to the wound caused by the suture due to pulling during the suture process. The heat recovery component in the present invention can recover the heat carried by the barbed suture after being rounded and shaped into the first cylinder shell of the softening component. The recovered heat entering the first cylinder shell moves slowly to heat the outside of the electric heating cylinder to the maximum extent, thereby reducing the temperature difference between the inside and outside of the electric heating cylinder, improving the heating efficiency of the electric heating cylinder to effectively heat the wire moving from the inside, and reducing the energy consumption of the electric heating cylinder in the process of heating and softening the wire. The second cylinder shell of the heat recovery component in the present invention has a small volume and two groups of spoilers symmetrically distributed therein, so that the air entering from the second air intake pipe is effectively disturbed by the spoilers to form turbulence. The turbulent air has a higher and faster temperature rise under the conduction of the heat carried by the suture moving in the second cylinder shell, thereby improving its efficiency in recovering heat from the softening component.

[0007] The above purpose is achieved through the following technical solutions:

[0008] An integrated injection molding device for barbed medical sutures, used for the production and processing of barbed medical sutures, comprises:

[0009] Softening component, used to soften flat wire.

[0010] Cutting assembly for staggered barbing of softened flat wire on both sides.

[0011] The shaping component is used to approximately round the flat wire that has been processed with barbs.

[0012] The heat recovery component is used to conduct the heat carried by the formed suture to the outside of the electric heating environment in the softening component.

[0013] Two winding and releasing components are used to convey the wire into the softening component and to wind and collect the formed suture wire that has completed heat recovery.

[0014] The two pulling assemblies are used to assist the winding and releasing assembly to horizontally move the wire from both ends of the softened part of the wire and prevent the softened part of the wire from being deformed due to pulling.

[0015] In one embodiment, the winding and releasing assembly includes a first bracket fixed to a base, a winding wheel is installed on the first bracket via a first rotating shaft, the first rotating shaft is drivingly connected to the output shaft of a first motor on the first bracket, and a flat wire or a barbed suture thread for winding and forming is wound on the winding wheel.

[0016] In one embodiment, the two traction assemblies are respectively located between the softening assembly and the corresponding side winding assembly and between the heat recovery assembly and the corresponding side winding assembly, and a transmission assembly for moving the two ends of the softening part of the wire at a constant speed is connected between the two traction assemblies, and the traction assembly includes a second bracket fixed to the base, a vertically retractable telescopic rod is installed on the top of the second bracket, a wheel seat is provided at the lower end of the telescopic rod, a first clamping wheel with a groove on the rim is installed in the wheel seat, a second clamping wheel with a groove on the rim is installed in the second bracket through a second rotating shaft, the second clamping wheel is located below the first clamping wheel, a pressure spring is provided in the telescopic rod for driving the first clamping wheel to press the flat wire or the formed suture line down to the groove on the rim of the second clamping wheel, and the second rotating shaft in the traction assembly located on the softening assembly side is transmission-connected to the output shaft of the second motor on the corresponding second bracket.

[0017] In one embodiment, the transmission assembly includes a third rotating shaft, which is rotatably disposed on the second brackets of the two traction assemblies. Second gears are disposed at both ends of the third rotating shaft, and the second gears are meshed with the first gears on the second rotating shaft in the corresponding side traction assembly, and the two first gears have the same rotation direction.

[0018] In one embodiment, the softening component includes two third brackets fixed to the base, and a first cylinder shell is installed on the two third brackets. An inlet sleeve for allowing the flat wire to enter and an outlet sleeve for allowing the softened flat wire to exit are respectively arranged in the middle of the two ends of the first cylinder shell, and an insulation layer is arranged on the outside of the first cylinder shell and the outlet sleeve. A coaxial electric heating cylinder is arranged in the first cylinder shell, and an annular space is formed between the electric heating cylinder and the first cylinder shell. An outlet pipe and a first inlet pipe connected to the heat recovery component are respectively arranged at both ends of the annular space. The first inlet pipe and the outlet pipe are 180 degrees apart in the circumferential direction, and an insulation layer is arranged on the outside of the first inlet pipe and the electric heating cylinder.

[0019] In one embodiment, the cutting assembly includes two third gears located on both sides of the wire and staggered front and back, the two third gears are arranged in a support seat at the end of the first cylinder shell, two fourth gears are meshed between the two third gears, a horizontally retractable telescopic rod is fixed on the third gear, a first electric push rod is hinged between one of the telescopic rods and the inner wall of the support seat, a vertical round rod is arranged at the end of the telescopic rod, the round rod slides in a guide groove at the top of the support seat and extends upward from the support seat, a cutter is installed on the round rod, and the guide groove guides the cutter to cut the wire at a small angle around the axis of the third gear to form a barb or guides the cutter to radially disengage from the barb along the wire.

[0020] In one embodiment, a limiting ring for supporting the limiting cutter is provided on the round rod, and a clamping block cooperating with a clamping groove at the lower end of the cutter is provided at the upper end of the limiting ring. A locking nut for locking the cutter is threadedly connected to the upper end of the round rod. The curved surfaces on both sides of the blade of the cutter are a first arc surface and a second arc surface intersecting at the cutting edge of the blade. The first arc surface is located on the inner side of the cutter and is coaxial with the corresponding third gear, and the second arc surface is located on the outer side of the cutter. The end of the guide groove is a guide arc portion for guiding the cutter to cut the wire around the axis of the corresponding third gear.

[0021] In one of the embodiments, the shaping assembly includes three clamping blocks for clamping and deforming the wire, the three clamping blocks slide horizontally on the upper end of the support seat in a direction perpendicular to the movement of the wire, one clamping block is located on one side of the wire, and the remaining two clamping blocks are located on the other side of the wire, and the inner side of the clamping block is provided with a semicircular groove for radially squeezing the portion between adjacent barbs on the same side of the wire, one end of the semicircular groove is a shaping arc portion that makes the connection between the barb and the wire an arc, and the bottom of the clamping block is provided with a trapezoidal guide rail on the support seat A matching trapezoidal guide groove, a slide is provided at the bottom of the clamping block, the slide slides in the slide groove on the support seat, a rack is provided at the lower end of the slide, the rack corresponding to the clamping block located alone on one side is simultaneously meshed with two fifth gears located in the support seat and on both sides thereof, the two fifth gears are respectively meshed with the racks corresponding to the two clamping blocks on the other side, a second electric push rod is connected between the slide accompanying the clamping block located alone on one side and the inner wall of the support seat, and a limit bar is provided on the support seat to limit the distance that the clamping block is separated from the wire.

[0022] In one of the embodiments, a double-layer glass cover is provided on the support seat to cover the positions of the cutting assembly and the shaping assembly, and the heat recovery assembly includes a second cylinder shell, which is fixed on the fixing seat at the end of the support seat and is tightly attached to the end of the glass cover, the line inlet at the end of the second cylinder shell is connected to the first line outlet at one end of the glass cover, and a second line outlet is provided at the other end of the second cylinder shell, and an air outlet and a second air inlet pipe connected to the first air inlet pipe are provided on the wall surface of the second cylinder shell, and the air outlet and the second air inlet pipe are 180 degrees apart in the circumferential direction, and a plurality of spoilers distributed circumferentially around the suture line are provided in the second cylinder shell, and an insulation layer is provided on the outer side of the second cylinder shell.

[0023] In one embodiment, the telescopic rod is composed of a rod sleeve and an inner rod which are sleeved with each other, and a pressure spring for resetting the telescopic rod is located in the rod sleeve, and the two ends of the pressure spring are respectively connected to the inner wall of the rod sleeve and the end of the inner rod.

[0024] The beneficial effects of the present invention are:

[0025] 1. The present invention heats and softens the flat wire by means of a softening component, so that the cutter in the cutting component can more easily cut barbs on the wire, and has low strength requirements for the cutter. At the same time, since the cutter cuts the barbs on the softened wire, the first electric push rod driving the cutter only needs to consume less electric energy and provide less power to achieve effective cutting of the wire by the cutter, thereby minimizing the volume of the first electric push rod as a driving structure, and effectively reducing the equipment cost while ensuring the demand.

[0026] 2. The present invention uses a shaping component to round off the flat wire material that has been barbed by the cut component and is still in a softened state, so that the cross-section of the suture finally formed is close to a circle, thereby making the bending resistance of the finally formed suture with barbs in any direction uniform, so that the suture can be flexibly routed as needed to suture the wound during use, thereby improving the user experience of the suture and avoiding or reducing the secondary trauma to the wound caused by the suture being pulled during the suture process.

[0027] 3. The heat recovery component in the present invention can recover the heat carried by the barbed suture after being rounded and shaped into the first cylinder shell of the softening component. The recovered heat entering the first cylinder shell moves slowly to heat the outside of the electric heating cylinder to the maximum extent, thereby reducing the temperature difference between the inside and outside of the electric heating cylinder, improving the heating efficiency of the electric heating cylinder to effectively heat the wire moving from the inside, and reducing the energy consumption of the electric heating cylinder in the process of heating and softening the wire.

[0028] 4. The second cylinder shell of the heat recovery component in the present invention has a small volume and two groups of spoilers are symmetrically distributed therein, so that the air entering from the second air inlet pipe is effectively disturbed by the spoilers to form turbulence. The turbulent air has a higher and faster temperature rise due to the conduction of heat carried by the suture lines moving in the second cylinder shell, thereby improving the efficiency of recovering heat from the softening component. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 are two overall schematic diagrams of the present invention;

[0030] Figure 2 is an overall side sectional view of the present invention;

[0031] Figure 3 is a cross-sectional view of the softening component structure in the present invention;

[0032] Figure 4 It is a process cross-sectional view of the softening component, the cutting component, the shaping component and the heat recovery component in the present invention;

[0033] Figure 5 is a cross-sectional view of a winding and releasing assembly in the present invention;

[0034] Figure 6 It is a partial cross-sectional view of two traction assemblies in the present invention;

[0035] Figure 7 is a top cross-sectional view of the transmission assembly in the present invention;

[0036] Figure 8 is a side cross-sectional view of the heat recovery component of the present invention;

[0037] Fig. 9 is a cross-sectional view of the connection between the softening component and the heat recovery component in the present invention;

[0038] Fig.10 is a top cross-sectional view of the heat recovery component in the present invention;

[0039] Fig.11 is a perspective view of a cutting assembly and a shaping assembly in the present invention;

[0040] Fig.12 is a cross-sectional view of the inner structure of the support seat of the present invention;

[0041] Fig.13 It is a partial cross-sectional view of the cutting assembly in the present invention;

[0042] Fig.14 It is a cross-sectional view of the cutting assembly and the wire material in the present invention;

[0043] Fig.15 is a schematic diagram of the change in position of the cutter of the cutting assembly in the present invention;

[0044] Fig.16It is a schematic diagram of the structure of the cutter and the round rod in the present invention;

[0045] Fig.17 It is a cross-sectional view of the shaping component and the wire material in the present invention;

[0046] Fig.18 It is a schematic diagram of the structure on the clamping block in the shaping component;

[0047] Fig.19 It is a cross-sectional view of the structure on the clamp block in the shaping component;

[0048] Fig. 20 It is a top-down view of the cutting component and the shaping component working together with the wire;

[0049] Fig.21 It is a schematic diagram of the support seat in the present invention;

[0050] Fig. 22 It is a schematic diagram of the structure and distribution of the guide grooves on the support seat in the present invention;

[0051] Fig.23 It is a partial schematic diagram of a flat wire with barbs processed;

[0052] Fig.24 This is a partial picture of the suture line of the final shape after plastic surgery;

[0053] Name of the label in the figure:

[0054] 101, base; 102, support seat; 103, guide groove; 104, guide arc; 105, slide groove; 106, trapezoidal guide rail; 107, limit strip; 108, glass cover; 109, fixed seat; 110, wire; 111, cut groove; 112, barb; 113, insulation layer; 114, first outlet;

[0055] 200, winding and releasing assembly; 201, first bracket; 202, first rotating shaft; 203, winding wheel; 204, first motor;

[0056] 300, traction assembly; 301, second bracket; 302, wheel seat; 303, first clamping wheel; 304, second rotating shaft; 305, second clamping wheel; 306, second motor;

[0057] 400, transmission assembly; 401, first gear; 402, second gear; 403, third rotating shaft;

[0058] 500, softening assembly; 501, third bracket; 502, first cylinder shell; 503, first air inlet pipe; 504, air outlet pipe; 505, inlet sleeve; 506, outlet sleeve; 507, electric heating cylinder;

[0059] 600, cutting assembly; 601, third gear; 602, fourth gear; 603, first electric push rod; 604, round rod; 605, limit ring; 606, clamping block; 607, cutter; 608, first arc surface; 609, clamping groove; 610, locking nut; 611, second arc surface;

[0060] 700, shaping assembly; 701, clamping block; 702, semicircular groove; 703, shaping arc; 704, trapezoidal guide groove; 705, slide seat; 706, rack; 707, fifth gear; 708, second electric push rod;

[0061] 800, heat recovery component; 801, second cylinder shell; 802, second air inlet; 803, air outlet; 804, line inlet; 805, second line outlet; 806, spoiler;

[0062] 900, telescopic rod; 901, rod sleeve; 902, inner rod; 903, pressure spring. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0064] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0065] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0066] like Figure 1-24 As shown, an integrated injection molding device for medical sutures with barbs 112 is used for the production and processing of medical sutures with barbs 112, comprising:

[0067] The softening component 500 is used to soften the flat wire 110 .

[0068] The cutting assembly 600 is used for staggeredly processing the barbs 112 on both sides of the softened flat wire 110 .

[0069] The shaping assembly 700 is used to approximately round the flat wire 110 after the barbs 112 are processed.

[0070] The heat recovery component 800 is used to conduct the heat carried by the formed suture to the outside of the electric heating environment in the softening component 500.

[0071] The two winding and releasing assemblies 200 are used to convey the wire 110 into the softening assembly 500 and to wind and collect the formed suture wire that has completed heat recovery.

[0072] The two pulling assemblies 300 are used to assist the winding and releasing assembly 200 to horizontally move the wire 110 from both ends of the softened portion of the wire 110 and prevent the softened portion of the wire 110 from being deformed due to pulling.

[0073] In a further embodiment, Figure 1 , 2 As shown in Figure 5, the winding assembly 200 includes a first bracket 201 fixed to the base 101, and a winding wheel 203 is installed on the first bracket 201 through a first rotating shaft 202. The first rotating shaft 202 is connected to the output shaft of the first motor 204 on the first bracket 201, and a flat wire 110 or a suture thread with barbs 112 used for winding and forming is wound on the winding wheel 203.

[0074] In a further embodiment, Figure 1 , 2As shown in Figures 6 and 7, the two traction assemblies 300 are respectively located between the softening assembly 500 and the corresponding side winding assembly 200 and between the heat recovery assembly 800 and the corresponding side winding assembly 200. A transmission assembly 400 for moving the softened part of the wire 110 at a constant speed is connected between the two traction assemblies 300. The traction assembly 300 includes a second bracket 301 fixed to the base 101, a vertically telescopic telescopic rod 900 is installed at the top of the second bracket 301, and a wheel seat 302 is provided at the lower end of the telescopic rod 900. A wheel seat 302 is installed inside the wheel seat 302. A first clamping wheel 303 with a groove on the rim is provided, and a second clamping wheel 305 with a groove on the rim is installed in the second bracket 301 through a second rotating shaft 304. The second clamping wheel 305 is located below the first clamping wheel 303. A pressure spring 903 is provided in the telescopic rod 900 for driving the first clamping wheel 303 to press the flat wire 110 or the formed suture line down to the groove on the rim of the second clamping wheel 305. The second rotating shaft 304 in the traction assembly 300 located on the softening assembly 500 side is drivingly connected to the output shaft of the second motor 306 on the corresponding second bracket 301.

[0075] In a further embodiment, Figure 7 As shown, the transmission assembly 400 includes a third rotating shaft 403, and the third rotating shaft 403 is rotatably set on the second bracket 301 of the two traction assemblies 300. Second gears 402 are set at both ends of the third rotating shaft 403. The second gear 402 is engaged with the first gear 401 on the second rotating shaft 304 in the corresponding side traction assembly 300, and the rotation directions of the two first gears 401 are the same.

[0076] In a further embodiment, Figure 1 , 2 As shown in Figures 3 and 9, the softening component 500 includes two third brackets 501 fixed to the base 101, and a first cylinder shell 502 is installed on the two third brackets 501. An inlet sleeve 505 for allowing the flat wire 110 to enter and an outlet sleeve 506 for allowing the softened flat wire 110 to go out are respectively arranged in the middle of the two ends of the first cylinder shell 502, and an insulation layer 113 is arranged on the outside of the first cylinder shell 502 and the outlet sleeve 506. A coaxial electric heating cylinder 507 is arranged in the first cylinder shell 502, and an annular space is formed between the electric heating cylinder 507 and the first cylinder shell 502, and an outlet pipe 504 and a first air inlet pipe 503 connected to the heat recovery component 800 are respectively arranged at both ends of the annular space. The first air inlet pipe 503 and the air outlet pipe 504 are 180 degrees apart in the circumferential direction, and the first air inlet pipe 503 and the electric heating cylinder 507 are both provided with an insulation layer 113 on the outside.

[0077] In a further embodiment, Figure 4 , 11As shown in Figures 12, 13, 14, and 15, the cutting assembly 600 includes two third gears 601 located on both sides of the wire 110 and staggered front and back, the two third gears 601 are arranged in the support seat 102 at the end of the first cylinder shell 502, and two fourth gears 602 are meshed between the two third gears 601. A horizontally telescopic telescopic rod 900 is fixed on the third gear 601, and a first electric push rod 603 is hinged between one of the telescopic rods 900 and the inner wall of the support seat 102. A vertical round rod 604 is arranged at the end of the telescopic rod 900, and the round rod 604 slides in the guide groove 103 at the top of the support seat 102 and extends upward from the support seat 102. A cutter 607 is installed on the round rod 604, and the guide groove 103 guides the cutter 607 to cut the wire 110 at a small angle around the axis of the third gear 601 to form a barb 112 or guide the cutter 607 to radially disengage from the barb 112 along the wire 110.

[0078] In a further embodiment, Fig.16 As shown, a limiting ring 605 supporting a limiting cutter 607 is provided on the round rod 604, and a clamping block 606 cooperating with a clamping groove 609 at the lower end of the cutter 607 is provided at the upper end of the limiting ring 605. A locking nut 610 for locking the cutter 607 is threadedly connected to the upper end of the round rod 604. In a further embodiment, as Fig.14 , 15 As shown in Figures 16, 21 and 22, the curved surfaces on both sides of the blade of the cutter 607 are a first arc surface 608 and a second arc surface 611 intersecting at the edge of the blade, the first arc surface 608 is located on the inner side of the cutter 607 and is coaxial with the corresponding third gear 601, the second arc surface 611 is located on the outer side of the cutter 607, and the end of the guide groove 103 is a guide arc portion 104 that guides the cutter 607 to cut the wire 110 around the axis of the corresponding third gear 601.

[0079] In a further embodiment, Figure 4 , 11, 12, 17, 18, 19, and 20, the shaping assembly 700 includes three clamping blocks 701 for clamping and deforming the wire 110, the three clamping blocks 701 slide horizontally on the upper end of the support seat 102 in a direction perpendicular to the movement of the wire 110, one clamping block 701 is located on one side of the wire 110, and the remaining two clamping blocks 701 are located on the other side of the wire 110, and the inner side of the clamping block 701 is provided with a semicircular groove 702 for radially squeezing the portion between adjacent barbs 112 on the same side of the wire 110, one end of the semicircular groove 702 is a shaping arc portion 703 that makes the connection between the barb 112 and the wire 110 an arc, and the bottom of the clamping block 701 is provided with a trapezoidal guide rail 10 on the support seat 102 6 cooperates with the trapezoidal guide groove 704, a slide seat 705 is provided at the bottom of the clamping block 701, and the slide seat 705 slides in the slide groove 105 on the support seat 102, and a rack 706 is provided at the lower end of the slide seat 705, and the rack 706 corresponding to the clamping block 701 located alone on one side is simultaneously meshed with two fifth gears 707 located in the support seat 102 and on both sides thereof, and the two fifth gears 707 are respectively meshed with the racks 706 corresponding to the two clamping blocks 701 on the other side, and a second electric push rod 708 is connected between the slide seat 705 accompanying the clamping block 701 located alone on one side and the inner wall of the support seat 102, and a limit bar 107 is provided on the support seat 102 to limit the distance of the clamping block 701 from the wire 110.

[0080] In a further embodiment, Figure 1 , 2 , 4, 9, 10, and 14, the support seat 102 is provided with a double-layer glass cover 108 for covering the position of the cutting assembly 600 and the shaping assembly 700, and the heat recovery assembly 800 includes a second cylinder shell 801, which is fixed to the fixing seat 109 at the end of the support seat 102 and is tightly attached to the end of the glass cover 108. In a further embodiment, as Figure 8 , 10 As shown, the wire inlet 804 at the end of the second cylindrical shell 801 is connected to the first wire outlet 114 at one end of the glass cover 108, and the second wire outlet 805 is opened at the other end of the second cylindrical shell 801. The wall surface of the second cylindrical shell 801 is provided with an air outlet 803 connected to the first air inlet pipe 503 and a second air inlet pipe 802, and the air outlet 803 is 180 degrees away from the second air inlet pipe 802 in the circumferential direction. A plurality of spoilers 806 distributed circumferentially around the suture line are provided in the second cylindrical shell 801, and a thermal insulation layer 113 is provided on the outer side of the second cylindrical shell 801.

[0081] In a further embodiment, Figure 6As shown, the telescopic rod 900 is composed of a rod sleeve 901 and an inner rod 902 which are sleeved with each other. A pressure spring 903 for retracting and resetting the telescopic rod 900 is located in the rod sleeve 901. The two ends of the pressure spring 903 are respectively connected to the inner wall of the rod sleeve 901 and the end of the inner rod 902.

[0082] The present invention heats and softens the flat wire 110 through the softening component 500, so that the cutter 607 in the cutting component 600 can more easily cut the barbs 112 on the wire 110, and the strength requirement of the cutter 607 is relatively low. At the same time, because the cutter 607 cuts the barbs 112 on the softened wire 110, the first electric push rod 603 driving the cutter 607 only needs to consume less electrical energy and provide less power to achieve effective cutting of the wire 110 by the cutter 607, thereby minimizing the volume of the first electric push rod 603 as a driving structure, and effectively reducing the equipment cost on the basis of ensuring the demand. The present invention uses a shaping component 700 to approximately round the flat wire 110 that has been processed with barbs 112 by the cut component 600 and is still in a softened state, so that the cross-section of the suture finally formed is close to a circle, thereby making the bending resistance in any direction of the finally formed suture with barbs 112 uniform, so that the suture can be flexibly routed as needed to suture the wound during use, thereby improving the user experience of the suture and avoiding or reducing the secondary trauma to the wound caused by the suture being pulled during the suture process. The heat recovery component 800 in the present invention can recover the heat carried by the barbed suture 112 after being rounded and shaped into the first cylinder shell 502 of the softening component 500. The recovered heat entering the first cylinder shell 502 moves slowly and heats the outer side of the electric heating cylinder 507 to the maximum extent, thereby reducing the temperature difference between the inside and outside of the electric heating cylinder 507, improving the heating efficiency of the electric heating cylinder 507 for effectively heating the wire 110 moving from the inside thereof, and reducing the energy consumption of the electric heating cylinder 507 in the process of heating and softening the wire 110. The second cylinder shell 801 of the heat recovery component 800 in the present invention has a small volume and two groups of spoilers 806 are symmetrically distributed therein, so that the air entering from the second air inlet pipe 802 is effectively disturbed by the spoilers 806 to form turbulence. The air forming turbulence has a higher and faster temperature rise under the conduction of the heat carried by the suture moving in the second cylinder shell 801, thereby improving its efficiency in recovering heat from the softening component 500.

[0083] The operation process of the present invention is as follows:

[0084] In the initial state, the flat wire 110 is wound on the winding wheel 203 of the winding assembly 200 on the side of the softening assembly 500. The flat wire 110 is successively wound on the winding wheel 203 of the winding assembly 200 through the traction assembly 300, the soft exchange assembly, the cutting assembly 600, the shaping assembly 700, and the shaping side traction assembly 300 on the corresponding side. The first clamping wheel 303 in the two traction assemblies 300 presses the wire 110 into the groove on the rim of the corresponding second clamping wheel 305 under the action of the corresponding pressure spring 903, and the pressure spring 903 in the telescopic rod 900 In a compressed state, the horizontal distance between the two cutters 607 in the cutting assembly 600 along the radial direction of the first cylinder shell 502 is the largest and the cutters 607 in this state do not interfere with the barbs 112 formed on the wire 110, the round rod 604 in the cutting assembly 600 is located at the end of the corresponding guide groove 103 farthest from the wire 110, the pressure spring 903 in the telescopic rod 900 connected to the third gear 601 is in a compressed state, and the three clamping blocks 701 in the shaping assembly 700 have sufficient spacing from the wire 110 and do not interfere with the barbs 112 on the wire 110.

[0085] When the flat wire 110 needs to be processed with barbs 112, the electric heating tube 507 in the softening component 500 is started, the electric heating tube 507 generates heat and quickly heats the wire 110. When the wire 110 in the electric heating tube 507 is added to a certain temperature and softens, the first motor 204 in the two winding and placing components 200 and the second motor 306 in the two traction components 300 are started. The two first motors 204 in the two winding and placing components 200 respectively drive the corresponding winding wheels 203 to rotate through the corresponding first rotating shafts 202. The winding wheel 203 in the winding and placing component 200 on the softening component 500 side loosens the flat wire 110 wound thereon, while the winding wheel 203 in the winding and placing component 200 on the heat recovery component 800 side winds the wire 110.

[0086] The second motor 306 in the conveying assembly 300 on the softening assembly 500 side drives the corresponding second clamping wheel 305 to rotate through the corresponding second rotating shaft 304, and the second clamping wheel 305 drives the corresponding first clamping wheel 303 to rotate through the flat wire 110. The first clamping wheel 303 and the second clamping wheel 305 clamp the wire 110 together and move the wire 110 into the softening assembly 500. At the same time, the second rotating shaft 304 in the conveying assembly 300 on the softening assembly 500 side 04 The second clamping wheel 305 and the first clamping wheel 303 in the traction assembly 300 on the side of the heat recovery assembly 800 are driven to rotate through the corresponding first gear 401, the second gear 402, the third rotating shaft 403, the second gear 402 and the first gear 401, and the rotation linear speeds of the first clamping wheel 303 and the second clamping wheel 305 in the two traction assemblies 300 are equal, and the traction assembly 300 on the side of the heat recovery assembly 800 pulls the wire 110 to the corresponding side winding assembly 200.

[0087] The two traction assemblies 300 clamp the softened portion of the wire 110 at both ends and pull the wire 110 toward the shaping assembly 700 at a constant speed, thereby ensuring that the softened portion of the wire 110 will not be pulled and deformed, thereby ensuring that the diameter of the wire 110 after the suture is finally formed is uniform.

[0088] During the heating process of the electric heating tube 507 heating the wire 110, the insulation layer 113 on the outside of the electric heating tube 507 can effectively ensure that the temperature change of the wire 110 is minimal.

[0089] like Fig.15 As shown, when the softened portion of the wire 110 moves into the glass cover 108 and reaches between the two cutters 607 in the cutting assembly 600 under the drive of the two traction assemblies 300, the operation of the first motor 204 and the second motor 306 is stopped, so that the movement and winding of the wire 110 stops, and then the first electric push rod 603 in the cutting assembly 600 is started, and the first electric push rod 603 drives the third gear 601 on the corresponding side to rotate through the corresponding telescopic rod 900, and the third gear 601 drives the third gear 601 on the other side through the two fourth gears 602. The wheel 601 rotates, the two third gears 601 rotate in opposite directions, the two telescopic rods 900 swing in opposite directions, the two telescopic rods 900 respectively drive the corresponding round rods 604 to move toward the wire 110 in the guide groove 103, the round rods 604 drive the corresponding cutters 607 to move to the end of the guide arc 104 of the wire 110 at the limit of the guide groove 103, and the two cutters 607 cut grooves 111 and form barbs 112 on both sides of the softened flat wire 110 at a small angle to the axial direction of the wire 110.

[0090] When the depth of the cutting groove 111 reaches the requirement, the first motor 204 and the second motor 306 are started to drive the two traction components 300 and the two winding components 200 to run a small amplitude, so that the wire 110 moves a small amplitude, and the barb 112 that has just been cut swings in the opposite direction a small amplitude under the action of the second arc surface 611 on the outer side of the cutter 607 that has not separated from the cutting groove 111, so that the barb 112 is out of the more protruding line of the part of the surface of the wire 110 and forms a substantially effective barb 112.

[0091] Then, the first electric push rod 603 is started, and the first electric push rod 603 drives the telescopic rods 900 on the two third gears 601 to swing back and reset through some transmission. The two telescopic rods 900 drive the two cutters 607 to swing back and reset and disengage from the cutting groove 111 and the wire 110. The reset cutters 607 do not interfere with the barbs 112 on the moving wire 110.

[0092] During the swinging of the two telescopic rods 900 in the cutting assembly 600 , due to the cooperation between the round rod 604 and the guide groove 103 , the two telescopic rods 900 will be extended and retracted to a corresponding extent, and the first electric push rod 603 will be adaptively swung to a corresponding extent.

[0093] After the two cutters 607 are reset to be separated from the cutting grooves 111 on the wire 110 and away from the barbs 112, the two first motors 204 in the two winding and releasing components 200 and the second motor 306 in the traction component 300 are started. The two winding and releasing components 200 and the two traction components 300 drive the wire 110 to continue to move a certain amplitude, and the movement amplitude is twice the distance between adjacent barbs 112, so that the three clamping blocks 701 in the shaping component 700 are respectively opposite to the parts between the adjacent cutting grooves 111 on both sides of the wire 110.

[0094] Then, if Fig.17 , 20 As shown, the second electric push rod 708 is started, and the second electric push rod 708 drives the clamping block 701 located alone on one side to move radially toward the wire 110 along the wire 110 through the slide seat 705 connected thereto, and the clamping block 701 located alone on one side drives the two clamping blocks 701 on the other side to move radially toward the wire 110 at a constant speed through the corresponding rack 706 and two fifth gears 707 and the racks 706 corresponding to the two clamping blocks 701 on the other side. When the clamping blocks 701 on both sides are radially butted, the semicircular grooves 702 on the inner walls of the clamping blocks 701 on both sides form a complete circular groove and clamp the area between adjacent cutting grooves 111 on the flat wire 110 with barbs 112 to be close to a circle.

[0095] When the softened portion of the wire 110 moves from the softening component 500 to the shaping component 700, the heat loss of the softened portion is effectively reduced and the softened state is maintained due to the wrapping of the double-layer glass cover 108, which is beneficial for the cutting component 600 to cut the wire 110 and the shaping component 700 to shape the wire 110 from a flat shape to a round shape.

[0096] After the softened flat wire 110 has passed through the shaping assembly 700, the second electric push rod 708 is started, and the second electric push rod 708 drives the three clamping blocks to slide back and reset through a series of transmissions and separate from the wire 110.

[0097] Then, the two winding and releasing components 200 and the pulling component 300 are started again to drive the wire 110 to continue to move a certain amplitude. The suture thread that has completed rounding and shaping and formed still carries a lot of heat to the heat recovery component 800. When the shaped wire 110 partially enters the second cylinder shell 801, air is blown into the second cylinder shell 801 through the second air inlet pipe 802. The air entering the second cylinder shell 801 forms turbulence under the action of the spoiler 806. The formed turbulence sends the heat carried on the suture thread into the first cylinder shell 502 of the softening component 500 through the first air inlet pipe 503. Due to the existence of the air outlet pipe 504, the air flow in the first cylinder shell 502 flows slowly, and the flow speed is less than 0.1m / s, so that the temperature rise of the outer environment of the electric heating tube 507 increases, thereby reducing the temperature difference between the inside and outside of the electric heating tube 507, effectively improving the heating efficiency of the electric heating tube 507 on the wire 110 therein, and reducing energy consumption.

[0098] During the movement of the wire 110, the gap between the wire 110 and the inlet sleeve 505 is extremely small because the wire 110 is not softened and is in a relatively hard state, while the gap between the wire 110 and the outlet sleeve 506 is larger because the wire 110 is in a softened state, thereby preventing the wire 110 from being scratched and deformed due to the small gap with the outlet sleeve 506. During the process of the wire 110 passing through the first outlet port 114 at the end of the glass cover 108 and the inlet port 804 of the second cylindrical shell 801, the gap between the wire 110 and the first outlet port 114 at the end of the glass cover 108 and the inlet port 804 of the second cylindrical shell 801 is larger because the wire 110 is in a high-temperature softened state, thereby preventing the wire 110 from being scratched and deformed by the first outlet port 114 and the second cylindrical shell 801.

Claims

1. An integrated injection molding device for barbed medical sutures, used for the production and processing of barbed medical sutures, characterized in that: include: Softening component, used for softening flat wire; A cutting assembly for staggered barbs on both sides of the softened flat wire; A shaping component is used to round the flat wire that has been processed with barbs; A heat recovery assembly for conducting heat carried by the formed suture to the outside of the electrically heated environment in the softening assembly; Two winding and releasing components, used for conveying wires into the softening component and winding and collecting the formed suture wires that have completed heat recovery; Two pulling assemblies are used to assist the winding assembly to horizontally move the wire from both ends of the softened part of the wire and prevent the softened part of the wire from being deformed due to pulling; The shaping assembly includes three clamping blocks for clamping and deforming the wire, and the three clamping blocks slide horizontally on the upper end of the support seat in a direction perpendicular to the movement of the wire. One clamping block is located on one side of the wire, and the remaining two clamping blocks are located on the other side of the wire. A semicircular groove is provided on the inner side of the clamping block for radially squeezing the area between adjacent barbs on the same side of the wire, and one end of the semicircular groove is a shaping arc portion that makes the connection between the barb and the wire an arc.

2. The integrated injection molding device for barbed medical suture according to claim 1, characterized in that: The winding assembly includes a first bracket fixed to the base, a winding wheel is installed on the first bracket through a first rotating shaft, the first rotating shaft is drivingly connected to the output shaft of the first motor on the first bracket, and a flat wire or a barbed suture thread used for winding and forming is wound on the winding wheel.

3. The integrated injection molding device for barbed medical suture according to claim 1, characterized in that: The two traction assemblies are respectively located between the softening assembly and the corresponding side winding assembly and between the heat recovery assembly and the corresponding side winding assembly, and a transmission assembly for moving the two ends of the wire softening part at a constant speed is connected between the two traction assemblies, and the traction assembly includes a second bracket fixed to the base, a vertically retractable telescopic rod is installed on the top of the second bracket, a wheel seat is provided at the lower end of the telescopic rod, a first clamping wheel with a groove on the wheel rim is installed in the wheel seat, a second clamping wheel with a groove on the wheel rim is installed in the second bracket through a second rotating shaft, the second clamping wheel is located below the first clamping wheel, a pressure spring is provided in the telescopic rod for driving the first clamping wheel to press the flat wire or the formed suture line down to the groove on the wheel rim of the second clamping wheel, and the second rotating shaft in the traction assembly on the softening assembly side is transmission-connected to the output shaft of the second motor on the corresponding second bracket.

4. The integrated injection molding device for barbed medical suture according to claim 3, characterized in that: The transmission assembly includes a third rotating shaft, which is rotatably arranged on the second brackets of the two traction assemblies. Second gears are arranged at both ends of the third rotating shaft. The second gears are meshed with the first gears on the second rotating shaft in the corresponding side traction assembly, and the two first gears have the same rotation direction.

5. The integrated injection molding device for barbed medical suture according to claim 1, characterized in that: The softening component includes two third brackets fixed to the base, and a first cylinder shell is installed on the two third brackets. An inlet sleeve for allowing the flat wire to enter and an outlet sleeve for allowing the softened flat wire to go out are respectively arranged in the middle of the two ends of the first cylinder shell, and an insulation layer is arranged on the outside of the first cylinder shell and the outlet sleeve. A coaxial electric heating cylinder is arranged in the first cylinder shell, and an annular space is formed between the electric heating cylinder and the first cylinder shell. An outlet pipe and a first inlet pipe connected to the heat recovery component are respectively arranged at both ends of the annular space. The first inlet pipe and the outlet pipe are 180 degrees apart in the circumferential direction, and an insulation layer is arranged on the outside of the first inlet pipe and the electric heating cylinder.

6. The integrated injection molding device for barbed medical suture according to claim 3, characterized in that: The cutting assembly includes two third gears located on both sides of the wire and staggered front and back, the two third gears are arranged in the support seat at the end of the first cylinder shell, and two fourth gears are meshed between the two third gears, and a horizontally retractable telescopic rod is fixed on the third gear, and a first electric push rod is hinged between one of the telescopic rods and the inner wall of the support seat, and a vertical round rod is arranged at the end of the telescopic rod, and the round rod slides in the guide groove at the top of the support seat and extends upward from the support seat, and a cutter is installed on the round rod, and the guide groove guides the cutter to cut the wire at a small angle around the axis of the third gear to form a barb or guides the cutter to radially disengage from the barb along the wire.

7. The integrated injection molding device for barbed medical suture according to claim 6, characterized in that: A limiting ring for supporting the limiting cutter is arranged on the round rod, a clamping block cooperating with a clamping groove at the lower end of the cutter is arranged at the upper end of the limiting ring, a locking nut for locking the cutter is threadedly connected to the upper end of the round rod, and the curved surfaces on both sides of the blade of the cutter are a first arc surface and a second arc surface intersecting at the edge of the blade, the first arc surface is located on the inner side of the cutter and is coaxial with the corresponding third gear, the second arc surface is located on the outer side of the cutter, and the end of the guide groove is a guiding arc portion for guiding the cutter to cut the wire around the axis of the corresponding third gear.

8. The integrated injection molding device for barbed medical suture according to claim 6, characterized in that: The bottom of the clamping block is provided with a trapezoidal guide groove that cooperates with the trapezoidal guide rail on the support seat, and a slide is provided at the bottom of the clamping block, and the slide slides in the slide groove on the support seat, and a rack is provided at the lower end of the slide, and the rack corresponding to the clamping block located alone on one side is simultaneously meshed with two fifth gears located in the support seat and on both sides thereof, and the two fifth gears are respectively meshed with the racks corresponding to the two clamping blocks on the other side, and a second electric push rod is connected between the slide accompanying the clamping block located alone on one side and the inner wall of the support seat, and a limit bar is provided on the support seat to limit the distance that the clamping block is separated from the wire.

9. The integrated injection molding device for barbed medical suture according to claim 8, characterized in that: The support seat is provided with a double-layer glass cover for covering the positions of the cutting assembly and the shaping assembly. The heat recovery assembly includes a second cylinder shell, which is fixed to a fixing seat at the end of the support seat and is tightly attached to the end of the glass cover. The line inlet at the end of the second cylinder shell is connected to the first line outlet at one end of the glass cover. A second line outlet is provided at the other end of the second cylinder shell. An air outlet and a second air inlet pipe connected to the first air inlet pipe are provided on the wall surface of the second cylinder shell. The air outlet and the second air inlet pipe are 180 degrees apart in the circumferential direction. A plurality of spoilers circumferentially distributed around the suture line are provided in the second cylinder shell, and an insulation layer is provided on the outer side of the second cylinder shell.

10. The integrated injection molding device for barbed medical suture according to claim 6, characterized in that: The telescopic rod is composed of a rod sleeve and an inner rod which are sleeved with each other. A pressure spring for retracting and resetting the telescopic rod is located in the rod sleeve. Two ends of the pressure spring are respectively connected to the inner wall of the rod sleeve and the end of the inner rod.

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