Barbed suture cutting device and barb cutting process

Abstract

The present application relates to suture processing equipment technical field, specifically disclose a kind of cutting device and barb cutting process for barbed suture, cutting device includes base, the both ends of base are respectively provided with thread guide mechanism, barb cutting mechanism and thread guide mechanism, barb cutting mechanism includes carrier plate, carrier plate is opened with for through suture central hole, two cutting clamping seats are symmetrically arranged on the carrier plate located at the both sides of central hole, linear slot is opened on the side of mutual approach of two cutting clamping seats, and cutting knife assembly is arranged on cutting clamping seat, and one end of cutting knife assembly is arranged in linear slot by the recess groove opened on cutting clamping seat stretches;The cutting device for barbed suture disclosed in the present application realizes the continuous, high-speed barb cutting of suture, significantly improves production efficiency, and can make the barb after cutting forming keep larger opening angle outward, enhances the holding force and connection stability of barb in use process.

Description

Technical Field

[0001] This invention relates to the field of suture processing equipment technology, and specifically discloses a cutting device for barbed sutures and a barb cutting process. Background Technology

[0002] Sutures are special types of thread used in surgery for hemostasis and tissue closure. To avoid knotting the sutures during surgery, multiple barbs are added to them. These barbs connect the sutures to the tissue, eliminating the need for knotting and shortening the operation time.

[0003] The current method for creating barbs on sutures typically involves using a cylinder to move a cutter at an angle, causing the blade to cut into the suture. The cylinder then shortens to remove the cutter from the incision, thus forming the barb (see reference). Figure 12 For example, utility model patent application number 202023140124.X discloses a barbed suture flipping and cutting mechanism. It uses an inlet tube, a tensioning block, and an outlet tube to determine the suture's travel path. A flipping blade holder, driven by a hollow rotating platform, is set between the inlet and outlet outer plates, rotating around the suture. A pair of barbed cutting components are symmetrically arranged within the flipping blade holder. A pair of inclined, symmetrical, and adjustable-angle circular blades in the barbed cutting components are driven at high speed by a cutting motor and continuously fed and withdrawn by a cylinder slide. This allows for the cutting of barbs on the suture surface in a specified direction, with a specified adjacent spacing, a specified distribution pattern, and a specified upturn angle, achieving automated cutting and forming of barbs on the suture surface.

[0004] The device disclosed in this utility model patent utilizes a blade that is angled to cut into the suture and then withdrawn from the suture to form a barb, thus automating the processing of barbs on the suture surface. However, this type of barb cutting equipment suffers from low processing efficiency and poor barb unfolding. Regarding processing efficiency, each barb cut requires a cylinder to push the blade forward and backward, resulting in a long overall operation time. As for barb unfolding, the angled entry and exit of the blade does not provide an outward push for the cut barb, resulting in a small outward opening angle and unstable hooking effect on tissue blocks during subsequent suturing. Therefore, to address the aforementioned shortcomings of existing barb suture flipping and cutting mechanisms, this application proposes a newly designed barb-cutting device and barb cutting process to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a cutting device and a barbed suture cutting process to solve the problems and shortcomings of existing barbed suture flipping and cutting mechanisms in the barbed suture cutting process, such as low efficiency and poor barb unfolding.

[0006] This invention is achieved through the following technical solution:

[0007] A cutting device for barbed sutures includes a base, with an inlet guide mechanism and an outlet guide mechanism respectively provided at both ends of the base, and a barbed cutting mechanism provided between the inlet guide mechanism and the outlet guide mechanism. The barbed cutting mechanism includes a carrier plate with a central hole for the suture to pass through. Two cutting clamps that can move closer to or further away from each other are symmetrically arranged on the carrier plate on both sides of the central hole. A straight groove parallel to the central axis of the central hole is provided on the side of the two cutting clamps that are close to each other. At least one of the cutting clamps is provided with a cutting blade assembly, and one end of the cutting blade assembly extends into the straight groove through a groove on the cutting clamp.

[0008] The cutting blade assembly includes a rotating seat fixed on a cutting clamping base. A blade wheel seat is rotatably mounted in the rotating seat, and one end of the blade wheel seat is connected to a cutting motor. Multiple inclined blade handles are rotatably arranged in the blade wheel seat, and each blade handle is equipped with a blade. A pressing strip corresponding to each blade handle is provided on one side of the blade wheel seat, and the pressing strip is connected to the rotating end of the blade handle through an end shaft. A torsion spring is sleeved on the end shaft, with its two ends connected to the pressing strip and the blade wheel seat respectively. A guide member is connected to the movable end of the pressing strip, and a guide ring groove is formed on the rotating seat to interact with the guide member.

[0009] As a further feature of the above scheme, the guide ring groove includes a small circular arc segment, a large circular arc segment, and a transition connecting segment. The large circular arc segment is located at the lower end of the rotating seat, and the small circular arc segment is located at the upper end of the rotating seat. The two ends of the transition connecting segment are respectively connected to the small circular arc segment and the large circular arc segment, and are connected to the other end of the small circular arc segment and the large circular arc segment by a radial straight line segment.

[0010] As a further feature of the above solution, each of the two cutting clamps is provided with a cutting blade assembly, and the two cutting blade assemblies are staggered along the suture traction direction.

[0011] As a further provision of the above solution, a support plate is fixed on the upper surface of the base, an end ring is provided on the support plate that coincides with the traction direction of the suture line, an extension ring is provided on the support plate that is concentrically arranged with the central hole, and the extension ring is rotatably mounted on the end ring through a bearing ring, and a rotary power assembly for driving the extension ring to rotate is provided on the support plate.

[0012] As a further provision of the above scheme, the rotary power assembly includes a rotary motor fixed on the support plate, a gear is provided on the motor shaft of the rotary motor, and a gear ring meshing with the gear is provided on the outer circumference of the extension ring.

[0013] As a further feature of the above scheme, slide rails are provided on both sides of the carrier plate located at the center hole, and slide grooves that interact with the slide rails are provided on both sides of the two cutting clamps. Telescopic drive members are provided on both sides of the carrier plate, and the telescopic ends of the telescopic drive members are connected to the corresponding cutting clamps.

[0014] As a further feature of the above solution, both ends of the cutting clamp are provided with notches located at the ends of the straight grooves, and each notch is rotatably connected to a guide wheel.

[0015] As a further provision of the above scheme, a rotating seat is provided on each of the cutting clamping seats on both sides of the groove. The blade wheel seat is installed in the rotating seat, and a cutting motor is installed on the rotating seat through a motor seat. The motor shaft of the cutting motor and the wheel shaft of the blade wheel seat are connected by a synchronous belt.

[0016] As a further feature of the above scheme, both the infeed guide mechanism and the outfeed guide mechanism include a vertical plate, and a clamping pair of wheels is connected to the side end of the vertical plate near the barb cutting mechanism. The vertical plate in the infeed guide mechanism is also connected to a pair of guide wheels that are vertically aligned with the unloading assembly on the side end away from the barb cutting mechanism.

[0017] The present invention also discloses a barb cutting process using the above-mentioned barb-tightening suture cutting device, comprising the following steps:

[0018] Adjust the infeed guide mechanism, the outfeed guide mechanism, and the barb cutting mechanism, and then load the sewing thread roll;

[0019] The suture thread is guided by the infeed guide mechanism and the outfeed guide mechanism, so that it passes straight through the barb cutting mechanism under the traction action;

[0020] (2) Drive the two cutting clamps close together so that the two cutting clamps close together, and then the two straight grooves form a straight channel for the suture to pass through, so that the suture moves along the straight channel during the barb cutting process;

[0021] (3) Start the cutting motor to make the blade wheel seat rotate at the set speed. During the rotation of the blade wheel seat, each blade handle will rotate synchronously, so that the blade will extend into the straight groove through the groove to cut the suture. When the blade rotates to the bottom, due to the cooperation between the guide and the guide ring groove, plus the elastic force of the torsion spring, the pressure bar will swing, so that the blade handle and the blade will move away from the suture. During this process, the blade will push the cut barbs outward, so that the barbs will spread outward at a certain angle and separate from the blade.

[0022] (4) Subsequently, the handle and the blade will rotate outward from the groove as the blade wheel seat continues to rotate, and will be reset again under the cooperation of the guide and the guide ring groove. After reset, wait for the next barbed cutting process of the suture line.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The barbed suture cutting device disclosed in this invention adopts a rotary cutting blade assembly design. The blade wheel seat can rotate continuously, and with multiple blades and handles evenly distributed around the circumference, it can achieve continuous and high-speed barbed cutting of the suture. Compared with the intermittent "one forward and one backward" action required for each barb in the traditional cylinder-driven cutting device, this device greatly reduces the single cutting cycle and significantly improves production efficiency.

[0025] In the present invention, the cutting blade assembly utilizes a guide ring groove and a torsion spring to control the movement trajectory of the blade during the barbed cutting process of the suture. This allows the blade to make an inclined cut to form a barb when it first contacts the suture, and then swing away from the suture momentarily when the blade is at its deepest point. During this process, the blade can apply an outward pushing force to the barb, so that the final cut barb can maintain a large outward unfolding angle. This enhances the gripping force and connection stability of the barb during use and solves the problem of insufficient barb unfolding in traditional oblique cutting methods.

[0026] This invention also incorporates two staggered cutting blade assemblies, allowing for the separate cutting of barbs at different positions along the suture axis, thus avoiding the risk of reduced suture strength or breakage due to overly concentrated cutting positions. Furthermore, the rotary drive mechanism design enables the entire barb cutting mechanism to rotate cyclically, achieving uniform barb processing around the suture circumference and ensuring the uniformity of the finished suture's mechanical properties and its reliability. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a three-dimensional structural diagram of the present invention from a first angle;

[0029] Figure 2 This is a schematic diagram of the second-angle three-dimensional structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the three-dimensional assembly structure of the barb cutting mechanism, support plate, etc. in this invention;

[0031] Figure 4 This is a three-dimensional structural diagram of the barb cutting mechanism in this invention;

[0032] Figure 5 This is a schematic diagram of the three-dimensional structure of the carrier plate, slide rail, etc. in this invention;

[0033] Figure 6 This is a three-dimensional structural diagram of the cutting clamp and cutting blade assembly in this invention;

[0034] Figure 7 This is a schematic diagram of the internal planar structure of the cutting clamp and cutting blade assembly when they are in contact.

[0035] Figure 8 This is a three-dimensional structural diagram of the cutting clamp, blade wheel seat, cutting motor, etc. in this invention;

[0036] Figure 9 This is a three-dimensional assembly structure diagram of the cutting blade assembly in this invention;

[0037] Figure 10 This is a three-dimensional structural diagram of the internal structure of the cutting blade assembly in this invention;

[0038] Figure 11 This is a planar schematic diagram of the interaction between the pressure bar, guide member, etc., and the guide ring groove in this invention.

[0039] Figure 12 This is a schematic diagram of the planar processing of existing oblique-cut suture barbs. Detailed Implementation

[0040] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The following will refer to the appendix... Figures 1-12 This application will be described in detail with reference to the embodiments. Example 1

[0042] Example 1 discloses a cutting device for barbed sutures, see attached drawing. Figure 1 and attached Figure 2 The main body of the cutting device includes a base 1 and an electrical control box 2, with the electrical control box 2 mounted on the front side of the base 1. An infeed guide mechanism 3 and an outfeed guide mechanism 4 are respectively provided at the left and right ends of the upper surface of the base 1. A barb cutting mechanism 5 is located on the upper surface of the base 1 between the infeed guide mechanism 3 and the outfeed guide mechanism 4, and a material unloading assembly 6 is provided on the left end face of the base 1. During the barb cutting process of the suture 100, the suture 100 on the material unloading assembly 6 is guided in by the infeed guide mechanism 3, processed by the barb cutting mechanism 5, and then discharged from the outfeed guide mechanism 4. Specifically, the forward propulsion of the suture 100 is provided by the traction of the next process equipment (in the figure), enabling the suture to pass through the barb cutting mechanism 5 at a set traction speed.

[0043] Reference Appendix Figure 4 and attached Figure 5 The barb cutting mechanism 5 includes a carrier plate 50 fixed to the upper surface of the base 1. A central hole 51 for the suture thread to pass through is formed at the center of the carrier plate 50. Two parallel slide rails 52 are arranged on the left side of the carrier plate 50 on both sides of the central hole 51. An L-shaped cutting clamp 53 is provided on each slide rail 52 above and below the central hole 51, and the right end of the cutting clamp 53 has a groove adapted to the slide rail 52. A telescopic drive member 54 is also provided at both the upper and lower ends of the carrier plate 50, and the telescopic end of the telescopic drive member 54 is connected to the corresponding cutting clamp 53. Specifically, the telescopic drive member 54 can be a cylinder or an electric push rod. By controlling the simultaneous extension or retraction of the two telescopic drive members 54, the two cutting clamps 53 can move closer or further apart.

[0044] Reference Appendix Figures 6-8Each of the two cutting clamping seats 53 has a straight groove 531 parallel to the central axis of the central hole 51 at the center of its adjacent side. When the two cutting clamping seats 53 are closed, the two straight grooves 531 form a straight channel coinciding with the central axis of the central hole 51, which effectively restricts and guides the suture 100 as it moves along the straight channel. In addition, notches 532 are provided at both ends of the two cutting clamping seats 53, and a guide wheel 55 is rotatably connected to each notch 532. When the two cutting clamping seats 53 are closed, the upper and lower guide wheels 55 also effectively clamp and guide the suture 100, thus ensuring that the suture remains straight during the barbed cutting process.

[0045] Reference Appendix Figures 6-11 A cutting blade assembly 60 is installed on the back of each of the two cutting clamps 53, which are far apart from each other. The two cutting blade assemblies 60 are staggered along the traction direction of the suture line 100. At the same time, each cutting clamp 53 is provided with a groove 533 that communicates with the corresponding straight groove 531, so that the blade in the cutting blade assembly 60 can extend to a certain depth of the straight groove 531 through the groove 533, thereby barbing the suture line that has been pulled through.

[0046] The cutting blade assembly 60 includes two symmetrically arranged rotating seats 61 on the cutting clamping base 53. A blade wheel seat 62 is rotatably connected between the two rotating seats 61. A cutting motor 63 is mounted on the cutting clamping base 53 via a motor mount. The output shaft of the cutting motor 63 is driven by a synchronous belt 64 to the wheel axle of the blade wheel seat 62. Four to eight bearings 621 are arranged in a circular array on both the front and rear end faces of the blade wheel seat 62, and the bearings 621 on the front and rear end faces are aligned one by one. A blade holder 65 is rotatably mounted between each pair of aligned bearings 621. A blade 66 is inserted into the movable end of each blade holder 65, and an arc-shaped opening 622 is provided on the outer circumference of the blade wheel seat 62 for the blade holder 65 and the blade 66 to extend at an angle. Each tool holder 65 has an end shaft 651 extending from a bearing 621 at its rotatable connection. The outer end of the end shaft 651 is connected to a radially arranged pressing bar 652, and a guide 654 is provided at the end of the pressing bar 652. A torsion spring 653 is sleeved on the end shaft 651, and the two ends of the torsion spring 653 are respectively connected to the blade wheel seat 62 and the pressing bar 652.

[0047] Furthermore, a guide ring groove 67, concentrically arranged with the bearing 621, is provided on the rotating seat 61 corresponding to the pressure bar 652. This guide ring groove 67 includes a small arc segment 671, a large arc segment 672, and a transition connecting section 673. The large arc segment 672 is located at the lower end of the rotating seat 61, and the small arc segment 671 is located at the upper end of the rotating seat 61. The two ends of the transition connecting section 673 are connected to the small arc segment 671 and the large arc segment 672 respectively, and are connected at the other ends of the small arc segment 671 and the large arc segment 672 by a radial straight section 674. When the guide member 654 interacts with the small arc segment 671, the blade 66 is at the outermost radial position, and when it rotates to the lowermost position, it can contact the suture line 100 to complete the cut. When the guide member 654 interacts with the large arc segment 672, the blade 66 is at the innermost radial position, and it will not contact the suture line 100 during rotation.

[0048] Finally, the infeed guide mechanism 3 and the outfeed guide mechanism 4 in this embodiment 1 are basically the same. Both include a vertical plate 301. A clamping pair of wheels 302 is connected to the side end of the vertical plate 301 near the barb cutting mechanism 5. At the same time, the infeed guide mechanism 3 is also connected to a pair of guide wheels 303 that are vertically aligned with the unloading assembly 6 on the side end away from the barb cutting mechanism 5.

[0049] In the operation of the barbed suture cutting device disclosed in Embodiment 1, the suture 100 is unwound by the unloading assembly 6 and horizontally passes through the infeed guide mechanism 3, the barbed cutting mechanism 5 and the outfeed guide mechanism 4 under the guidance of the guide wheel pair 303. It is also connected to the traction device of the subsequent process equipment, so that the suture 100 can pass through the barbed cutting mechanism 5 at a uniform speed in a straight state during the barbed cutting process.

[0050] During operation, the barb cutting mechanism 5 first extends the two telescopic drive members 54 simultaneously, causing the two cutting clamps 53 to move closer to each other, thereby clamping and restricting the suture 100 in the straight channel after the two straight grooves 531 are closed.

[0051] Next, the cutting motor 63 is started, and the blade wheel seat 62 rotates at a set speed under the drive of the synchronous belt 64. During the rotation of the blade wheel seat 62, the blade shank 65 located outside the groove 533, due to the cooperation between the pressure bar 652, the guide member 654, and the small arc segment 671, will cause the blade 66 on the blade shank 65 to be at the outermost radial position. After it rotates into the groove 533, it will act on the suture 100 in the straight channel, thus cutting laterally into the suture 100. Then, before the blade 66 rotates to the bottom, the guide member 654 will move to the position of the radial straight segment 674. At this time, under the force of the torsion spring 653, the pressure bar 652 will rotate rapidly, thus causing the guide member 654 to move to the end of the large arc segment 672. During this process, the blade shank 65 will carry the blade 66 to rotate rapidly radially inward until it disengages from the suture 100. At the same time, the blade 66 will push the cut outward, thus forming an outwardly spreading barb. Finally, the blade wheel holder 62, carrying the tool holder 65 and the blade 66, rotates out of the groove 533. After rotating out, it will be reset again to the outermost radial position through the action between the transition connecting section 673 and the guide member 654.

[0052] Because of the seating arrangement between the upper and lower cutting blade assemblies 60 in this embodiment 1, the blade wheel seat 62 can cut a barb on the suture line 100 every time it rotates a certain angle, and the upper and lower barbs are misaligned with each other in the axial direction, so as to avoid the suture line 100 from breaking due to its small cross-sectional area in the middle during the barb cutting process. Example 2

[0053] Example 2 discloses a cutting device for barbed sutures that is further improved based on the technical solution in Example 1. The similarities between it and Example 1 will not be described again.

[0054] Reference Appendix Figures 1-3 In this embodiment 2, the barb cutting mechanism 5 also includes a support plate 56 fixed to the upper surface of the base 1. An end ring 561 coinciding with the traction direction of the suture 100 is provided at the center of the support plate 56. An extension ring 57 concentrically arranged with the central hole 51 is provided on the carrier plate 50, and the end ring 561 and the extension ring 57 are rotatably connected by an intermediate bearing ring 58.

[0055] Meanwhile, a gear ring 571 is provided on the outer circular surface of the extension ring 57, and a rotary motor 59 is installed on the support plate 56. Specifically, the rotary motor 59 can be a servo motor. The rotation angle and speed of the rotary motor 59 can be precisely controlled by servo control. Then, a gear 591 that meshes with the gear ring 571 is provided on the output shaft of the rotary motor 59. The precise rotation of the entire carrier plate 50 and its auxiliary components is controlled by the meshing transmission between the gear and the gear ring.

[0056] In this embodiment 2, through the above-mentioned improved design, during the barb cutting process of the suture, after the upper and lower ends of a taut suture section are cut with barbs by the two cutting blade assemblies 60, the rotary motor 59 immediately rotates at a certain angle. Then, under the transmission of the gear ring, the barb cutting mechanism 5 rotates 90°. After rotation, the two cutting blade assemblies 60 cut the lower end of the suture section with barbs again. This reciprocating rotational cutting process can evenly cut barbs in the circumference of the suture 100, avoiding the problem of uneven mechanical properties caused by cutting the suture in a single direction. This effectively ensures the mechanical properties of the suture after barb cutting and avoids the suture being easily pulled and broken during surgery.

[0057] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cutting device for barbed sutures, comprising a base, wherein an infeed guide mechanism and an outfeed guide mechanism are respectively provided at both ends of the base, and a barbed cutting mechanism is provided between the infeed guide mechanism and the outfeed guide mechanism, characterized in that, The barb cutting mechanism includes a carrier plate with a central hole for the suture to pass through. Two cutting clamps that can move closer to or further away from each other are symmetrically arranged on the carrier plate on both sides of the central hole. The two cutting clamps have straight grooves parallel to the central axis of the central hole on their sides that are close to each other. At least one of the cutting clamps is provided with a cutting blade assembly, and one end of the cutting blade assembly extends into the straight groove through a groove on the cutting clamp. The cutting blade assembly includes a rotating seat fixed on a cutting clamping base. A blade wheel seat is rotatably mounted in the rotating seat, and a cutting motor is connected to one end of the blade wheel seat. Multiple inclined blade handles are rotatably arranged in the blade wheel seat, and a blade is mounted on each blade handle. A pressing strip corresponding to each blade handle is provided on one side of the blade wheel seat, and the pressing strip is connected to the rotating end of the blade handle through an end shaft. A torsion spring is sleeved on the end shaft, with its two ends connected to the pressing strip and the blade wheel seat respectively. A guide member is connected to the movable end of the pressing strip, and a guide ring groove is formed on the rotating seat to interact with the guide member. The guide ring groove includes a small circular arc segment, a large circular arc segment, and a transition connecting segment. The large circular arc segment is located at the lower end of the rotating seat, and the small circular arc segment is located at the upper end of the rotating seat. The two ends of the transition connecting segment are respectively connected to the small circular arc segment and the large circular arc segment, and the other ends of the small circular arc segment and the large circular arc segment are connected by a radial straight segment. When the guide interacts with the small arc segment, the blade is at the outermost radial position; when the guide interacts with the large arc segment, the blade is at the innermost radial position; before the blade rotates to the bottom, the guide moves to the position of the radial straight segment.

2. The cutting device for barbed sutures according to claim 1, characterized in that, Both cutting clamps are equipped with cutting blade assemblies, and the two cutting blade assemblies are staggered along the suture traction direction.

3. The cutting device for barbed sutures according to claim 1, characterized in that, A support plate is fixed on the upper surface of the base. An end ring is provided on the support plate, which is aligned with the traction direction of the suture line. An extension ring is provided on the support plate, which is concentrically arranged with the central hole. The extension ring is rotatably mounted on the end ring via a bearing ring. A rotary power assembly for driving the extension ring to rotate is provided on the support plate.

4. The cutting device for barbed sutures according to claim 3, characterized in that, The rotary power assembly includes a rotary motor fixed on a support plate, a gear on the motor shaft of the rotary motor, and a gear ring meshing with the gear on the outer circumference of the extension ring.

5. The cutting device for barbed sutures according to claim 1, characterized in that, The carrier plates located on both sides of the central hole are provided with slide rails, and the two cutting clamps are provided with sliding grooves that interact with the slide rails. The two pairs of side ends of the carrier plates are provided with telescopic drive members, and the telescopic ends of the telescopic drive members are connected to the corresponding cutting clamps.

6. The cutting device for barbed sutures according to claim 5, characterized in that, Both ends of the cutting clamp are provided with notches located at the ends of the straight grooves, and each notch is rotatably connected to a guide wheel.

7. The cutting device for barbed sutures according to claim 1, characterized in that, Rotary seats are provided on both sides of the cutting clamping seats located in the groove. The blade wheel seat is installed in the rotating seat, and a cutting motor is installed on the rotating seat through a motor seat. The motor shaft of the cutting motor and the wheel shaft of the blade wheel seat are connected by a synchronous belt.

8. The cutting device for barbed sutures according to claim 1, characterized in that, Both the infeed guide mechanism and the outfeed guide mechanism include a vertical plate, and a pair of clamping wheels are connected to the side end of the vertical plate near the barbed cutting mechanism. The vertical plate in the infeed guide mechanism is also connected to a pair of guide wheels that are vertically aligned with the unloading assembly on the side end away from the barbed cutting mechanism.

9. A barb cutting process using the barbed suture cutting device according to any one of claims 1 to 8, characterized in that, Includes the following steps: (1) Adjust the infeed guide mechanism, the outfeed guide mechanism and the barb cutting mechanism, and then load the sewing thread roll; (2) The suture thread is guided by the infeed guide mechanism and the outfeed guide mechanism so that it passes through the barb cutting mechanism in a straight line under the traction action; (3) Drive the two cutting clamps close together so that the two cutting clamps close together, and then the two straight grooves form a straight channel for the suture to pass through, so that the suture moves along the straight channel during the barb cutting process; (4) Start the cutting motor to make the blade wheel seat rotate at the set speed. During the rotation of the blade wheel seat, each blade handle will rotate synchronously, so that the blade will extend into the straight groove through the groove to cut the suture. When the blade rotates to the bottom, due to the cooperation between the guide and the guide ring groove, plus the elastic force of the torsion spring, the pressure bar will swing, so that the blade handle and the blade will move away from the suture. During this process, the blade will push the cut barbs outward, so that the barbs will spread outward at a certain angle and separate from the blade. (5) Then the handle and blade will rotate outward from the groove and reset again under the action of the guide and the guide ring groove. After resetting, wait for the next barbed cutting process of the suture line.

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