A kind of barbed medical suture production equipment

Abstract

The present invention belongs to the technical field of medical suture production, and in particular, relates to a barbed medical suture production device, including a plurality of cladding components and a cutting component. The cladding component is used to wrap the outer skin layer on the surface of the wire material by extrusion and form two convex strips 180 degrees apart in the circumferential direction on the outer skin layer. The cutting component is used to cut the convex strips to form barbs. The present invention extrude the cladding component on the surface of the wire material to wrap the outer skin layer and form a suture. The present invention forms barbs on the two convex strips on the outside of the suture that are still in a soft state by staggered movement of the first cutter and the second cutter on the symmetrically distributed cutting component. The cutting process of the barbs on the suture can be completed without the need for the cutting component to have a large cutting force and a high cutting accuracy. The present invention is desktop-level and small in size.

Description

Technical Field

[0001] The invention belongs to the technical field of medical suture production, and in particular relates to a barbed medical suture production device. Background Art

[0002] Barbed sutures, also known as knot-free barbed sutures, are a special type of surgical sutures. They are characterized by barbs cut on a single strand of thread. These barbs can firmly grasp the tissue during suturing, thus achieving the effect of no need to tie knots. The design of the barbed suture can reduce surgical time, improve suturing efficiency, and has significant advantages in situations where it is inconvenient to tie knots, such as laparoscopic surgery. Barbed sutures are usually divided into unidirectional and bidirectional types. Bidirectional barbed sutures have barbs added to the main body of the single fiber thread to ensure the tensile strength of the suture itself.

[0003] The current method for manufacturing barbed sutures, such as the patent application number 202410752866.1, first extrude a wire with a circular cross-section, and then process the barbs through the reciprocating motion of a cutting knife. Due to the characteristics of the wire for medical use, the strength and toughness of the wire are relatively high, which requires the cutting knife to have a strong cutting force and cutting accuracy, so the general barb processing equipment is relatively large in size.

[0004] Another current processing method is to flatten the wire before cutting the barbs for ease of cutting, and then cut the barbs on the flattened wire. The wire produced in this way has an elliptical cross-section, and the bendability of the wire will be different due to its bending direction, which affects the suturing operation during surgery.

[0005] The present invention designs an extrusion type barb adding technology, which reduces the volume of the cutting equipment and solves the problem of needing to flatten the wire for barb cutting processing. Summary of the invention

[0006] Based on this, it is necessary to provide a barbed medical suture production device to address the problems existing in the current production of medical barbed sutures. The present invention uses a cladding component to extrude and wrap the outer cortex on the surface of the wire to form a suture. The present invention uses the staggered movement of the first cutter and the second cutter on the symmetrically distributed cutting component to shear and form barbs on the two convex strips on the outside of the suture that are still in a soft state. The cutting process of the barbs on the suture can be completed without the need for the cutting component to have a large cutting force and a high cutting accuracy. The present invention is desktop-level and has a small size. The present invention can process barbs on the sewing thread while keeping the cross-section of the suture in a circular state, thereby ensuring that the suture has the same use bendability in all directions, and does not affect the suture operation of the suture during use.

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

[0008] A barbed medical suture production device, used for cutting and processing barbs on sutures, comprising:

[0009] A plurality of cladding components are used to wrap the outer skin layer on the surface of the wire material in an extrusion manner and form two convex strips 180 degrees apart in the circumferential direction on the outer skin layer.

[0010] A cutting assembly is used for cutting and forming barbs on the convex strips. The cutting assembly includes a rotating seat, a second ring sleeve driven by a fourth motor is rotatably arranged in the rotating seat, a first rotating shell with an end opening is arranged at one end of the second ring sleeve, an end cover forming an annular gap with the first rotating shell is arranged at the end opening of the first rotating shell, a plurality of first discharge ports are evenly arranged on the cylindrical surface of the first rotating shell, a first cutter integrally connected to the first rotating shell and the end cover is arranged at one circumferential end of the first discharge port, a baffle is hinged at one end of the first cutter, a vortex spring for driving the baffle to close is arranged between the baffle and the first cutter, a third ring sleeve connected to the second ring sleeve is rotatably arranged in the second ring sleeve, the third ring sleeve rotates in the same speed and in the opposite direction with the second ring sleeve, a second rotating shell is arranged at one end of the third ring sleeve, and second discharge ports equal in number to the first discharge ports are evenly arranged on the cylindrical surface of the second rotating shell, a second cutter cooperating with the first cutter is connected at one circumferential end of the second discharge port through a connecting block, and the connecting block and the second cutter slide in the annular gap and the first cutter respectively.

[0011] In one embodiment, the swivel seat is disposed on the electric control cabinet, the fourth motor is disposed on the swivel seat, a seventh gear is disposed on the output shaft of the fourth motor, and the seventh gear is meshed with the sixth gear on the second ring sleeve.

[0012] In one of the embodiments, the baffle is hinged to the first cutter through a round pin fixed thereon, the two ends of the vortex spring are respectively connected to the round pin and the first cutter, and the other end of the third ring sleeve is rotatably provided with a first negative pressure tube, which is connected to the second negative pressure tube on the negative pressure device.

[0013] In one embodiment, an eighth gear is provided on the second ring sleeve, two fixed seats 180 degrees apart in the circumferential direction are provided on the rotating seat, a ninth gear meshing with the eighth gear is provided on the fixed seat, the ninth gear meshes with the tenth gear on the corresponding fixed seat, an eleventh gear is provided on the shaft where the tenth gear is located, the eleventh gear meshes with the twelfth gear on the corresponding fixed seat, and the twelfth gear meshes with the thirteenth gear on the third ring sleeve.

[0014] In one embodiment, the rotational linear speeds of the tenth gear and the eleventh gear are equal.

[0015] In one embodiment, the cladding assembly includes a first cylinder, which is arranged on an electric control cabinet through a bracket, a cone head is arranged at one end of the first cylinder, a coaxial second cylinder is arranged inside the first cylinder, both ends of the second cylinder are fixedly connected to the first cylinder by three circumferentially evenly distributed connecting rods, a first ring sleeve driven by a first motor is rotatably arranged on the outer side of the second cylinder, a first spiral sheet is arranged on the first ring sleeve, a first feed port is arranged on the wall surface of the non-conical head end of the first cylinder, a feeding assembly is arranged at the first feed port, and an electric heating layer is arranged on the outer side of the first cylinder.

[0016] In one embodiment, the first ring sleeve seal rotates in the annular gap between the first cylinder and the second cylinder, a first gear is provided on the first ring sleeve, the first gear is meshed with a second gear installed on the bracket, the second gear is meshed with a third gear installed on the output shaft of the first motor, and the first motor is installed on the electric control cabinet.

[0017] In one embodiment, the inner wall of the entry end of the second cylinder is provided with a flared groove for facilitating the entry of the wire.

[0018] In one embodiment, the feeding assembly includes a third cylinder, the third cylinder is connected to the first feed port of the first cylinder, a rotating shaft is rotatably arranged inside the third cylinder, a second spiral sheet is arranged on the rotating shaft, a fourth gear is arranged on the rotating shaft, the fourth gear is meshed with a fifth gear on the output shaft of the second motor, the second motor is installed on the outside of the third cylinder, a second feed port is arranged on the wall surface of the third cylinder, and a hopper is arranged on the second feed port.

[0019] In one of the embodiments, the electric control cabinet is provided with a traction component for pulling the wire to move in the second cylinder toward the cone head, the traction component includes a gantry, a first pressure wheel is arranged in the gantry through a wheel axle, the wheel axle is drivingly connected to the output shaft of the third motor, the third motor is installed on the electric control cabinet, a vertically retractable telescopic rod is arranged on the top of the gantry, the telescopic rod is composed of a rod sleeve fixed to the gantry and an inner rod sliding in the rod sleeve, an extrusion spring is arranged in the rod sleeve, the two ends of the extrusion spring are respectively connected to the inner wall of the rod sleeve and the upper end of the inner rod, a wheel seat is arranged at the lower end of the inner rod, a second pressure wheel is arranged in the wheel seat for radially pressing the wire against the wheel groove on the wheel rim of the first pressure wheel.

[0020] The beneficial effects of the present invention are:

[0021] 1. The present invention extrudes a cladding component on the surface of the wire material to wrap the outer skin layer and form a suture. The present invention forms barbs on two convex strips on the outside of the suture that are still in a soft state by staggered movement of the first cutter and the second cutter on the symmetrically distributed cutting component. The cutting process of the barbs on the suture can be completed without the need for the cutting component to have a large cutting force and a high cutting accuracy. The present invention is desktop-level and has a small size.

[0022] 2. The present invention can process barbs on the sewing thread while keeping the cross section of the suture thread circular, thereby ensuring that the suture thread has the same usability and flexibility in all directions, without affecting the suturing operation of the suture thread during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an overall schematic diagram of the present invention;

[0024] Figure 2 is an overall cross-sectional view of the present invention;

[0025] Figure 3 is a cross-sectional view of the cladding component and the suture line in the present invention;

[0026] Figure 4 It is a cross-sectional view of the cooperation between the traction assembly and the suture thread in the present invention;

[0027] Figure 5 It is a cross-sectional view of the coordination of the feeding assembly and all the cladding assemblies in the present invention;

[0028] Figure 6 is a schematic diagram of a cutting assembly in the present invention;

[0029] Figure 7 is an overall cross-sectional view of the cutting assembly of the present invention;

[0030] Figure 8 is a cross-sectional view of the suture line and the corresponding two cutting components;

[0031] Fig. 9 It is a partial cross-sectional view of the cutting assembly and suture line;

[0032] Fig.10 is a schematic diagram of the structure on the first rotating shell;

[0033] Fig.11 are two cross-sectional views of the structure on the first rotating shell;

[0034] Fig.12 is a cross-sectional view of the first cutter structure;

[0035] Fig.13 is a schematic diagram of the structure on the second rotating shell;

[0036] Fig.14are two cross-sectional views of the structure on the second rotating shell;

[0037] Fig.15 is a suture structure and a cross-sectional view thereof after being processed by a cladding assembly and a cutting assembly;

[0038] Fig.16 It is a schematic diagram of three states of the cutting assembly processing barbs on the suture line;

[0039] Name of the label in the figure:

[0040] 100, cladding assembly; 101, first cylinder; 102, cone head; 103, first feed port; 104, second cylinder; 105, expansion groove; 106, first ring sleeve; 107, first spiral sheet; 108, electric heating layer; 109, connecting rod; 110, first gear; 111, second gear; 112, third gear; 113, first motor;

[0041] 200, feeding assembly; 201, third cylinder; 202, rotating shaft; 203, second spiral sheet; 204, fourth gear; 205, fifth gear; 206, second motor; 207, second feed port; 208, hopper;

[0042] 300, traction assembly; 301, door frame; 302, first pressure wheel; 303, wheel axle; 304, third motor; 305, telescopic rod; 306, rod sleeve; 307, inner rod; 308, wheel seat; 309, second pressure wheel; 310, extrusion spring;

[0043] 400, cutting assembly; 401, rotating seat; 402, second ring sleeve; 403, first rotary shell; 404, first discharge port; 405, end cover; 406, annular seam; 407, first cutter; 408, baffle; 409, round pin; 410, vortex spring; 411, third ring sleeve; 412, second rotary shell; 413, second discharge port; 414, connecting block; 415, second cutter; 416, sixth gear; 417, seventh gear; 418, fourth motor; 419, eighth gear; 420, fixed seat; 421, ninth gear; 422, tenth gear; 423, eleventh gear; 424, twelve gear; 425, thirteenth gear; 426, first negative pressure pipe;

[0044] 501, electric control cabinet; 502, second negative pressure tube; 503, negative pressure equipment; 504, wire; 505, outer skin; 506, convex strip; 507, barb; 508, groove. DETAILED DESCRIPTION

[0045] 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.

[0046] 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.

[0047] 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.

[0048] like Figure 1-15 As shown, a barbed 507 medical suture production device is used to cut and process the barbs 507 on the suture, comprising:

[0049] A plurality of cladding components 100 are used to wrap the outer skin layer 505 on the surface of the wire 504 in an extrusion manner and form two convex strips 506 on the outer skin layer 505 with a circumferential distance of 180 degrees.

[0050] The cutting assembly 400 is used for cutting the convex strip 506 to form the barb 507. The cutting assembly 400 includes a rotating seat 401. A second ring sleeve 402 driven by a fourth motor 418 is rotatably arranged in the rotating seat 401. A first rotating shell 403 with an end opening is arranged at one end of the second ring sleeve 402. An end cover 405 forming a ring gap 406 with the first rotating shell 403 is arranged at the end opening of the first rotating shell 403. A plurality of first discharge ports 404 are evenly arranged on the cylindrical surface of the first rotating shell 403. A first cutter 407 integrally connected to the first rotating shell 403 and the end cover 405 is arranged at one circumferential end of the first discharge port 404. A baffle 408 is hinged at one end of the first cutter 407. A vortex spring 410 for driving the baffle 408 to close is arranged between the baffle 408 and the first cutter 407, a third ring sleeve 411 is rotatably arranged in the second ring sleeve 402 and is transmission-connected thereto, the third ring sleeve 411 and the second ring sleeve 402 rotate in opposite directions at the same speed, a second rotating shell 412 is arranged at one end of the third ring sleeve 411, and second discharge openings 413 equal in number to the first discharge openings 404 are evenly opened on the cylindrical surface of the second rotating shell 412, a second cutter 415 cooperating with the first cutter 407 is connected at one circumferential end of the second discharge opening 413 through a connecting block 414, and the connecting block 414 and the second cutter 415 slide in the annular gap 406 and the first cutter 407 respectively.

[0051] In a further embodiment, Figure 1 , 3 As shown, the rotating seat 401 is arranged on the electric control cabinet 501 , the fourth motor 418 is arranged on the rotating seat 401 , and a seventh gear 417 is arranged on the output shaft of the fourth motor 418 , and the seventh gear 417 is meshed with the sixth gear 416 on the second ring sleeve 402 .

[0052] In a further embodiment, Figure 1 , 7 As shown in FIG. 12 , the baffle 408 is hinged to the first cutter 407 via a round pin 409 fixed thereon, the two ends of the vortex spring 410 are respectively connected to the round pin 409 and the first cutter 407 , and the other end of the third ring sleeve 411 is rotatably provided with a first negative pressure tube 426 , which is connected to the second negative pressure tube 502 on the negative pressure device 503 .

[0053] In a further embodiment, Figure 7As shown, an eighth gear 419 is provided on the second ring sleeve 402, and two fixed seats 420 with a circumferential distance of 180 degrees are provided on the rotating seat 401, and a ninth gear 421 meshing with the eighth gear 419 is provided on the fixed seat 420, and the ninth gear 421 meshes with the tenth gear 422 on the corresponding fixed seat 420, and an eleventh gear 423 is provided on the shaft where the tenth gear 422 is located, and the eleventh gear 423 meshes with the twelfth gear 424 on the corresponding fixed seat 420, and the twelve gear 424 meshes with the thirteenth gear 425 on the third ring sleeve 411.

[0054] In a further embodiment, Figure 7 As shown, the rotation linear speeds of the tenth gear 422 and the eleventh gear 423 are equal.

[0055] In a further embodiment, Figure 3 As shown, the cladding component 100 includes a first cylinder 101, which is arranged on the electric control cabinet 501 through a bracket, a cone head 102 is arranged at one end of the first cylinder 101, a coaxial second cylinder 104 is arranged inside the first cylinder 101, and both ends of the second cylinder 104 are respectively fixedly connected to the first cylinder 101 through three circumferentially evenly distributed connecting rods 109, a first ring sleeve 106 driven by a first motor 113 is rotatably arranged on the outer side of the second cylinder 104, a first spiral sheet 107 is arranged on the first ring sleeve 106, a first feed port 103 is arranged on the wall surface of the non-conical head 102 end of the first cylinder 101, a feeding component 200 is arranged at the first feed port 103, and an electric heating layer 108 is arranged on the outer side of the first cylinder 101.

[0056] In a further embodiment, Figure 3 As shown, the first ring sleeve 106 is sealed and rotated in the annular gap between the first cylinder 101 and the second cylinder 104. A first gear 110 is provided on the first ring sleeve 106. The first gear 110 is meshed with a second gear 111 installed on the bracket. The second gear 111 is meshed with a third gear 112 installed on the output shaft of the first motor 113. The first motor 113 is installed on the electric control cabinet 501.

[0057] In a further embodiment, Figure 3 As shown, the inner wall of the entry end of the second cylinder 104 is provided with an expansion groove 105 for facilitating the entry of the wire 504 .

[0058] In a further embodiment, Figure 3 , 5As shown, the feeding assembly 200 includes a third cylinder 201, and the third cylinder 201 is connected to the first feed port 103 of the first cylinder 101. A rotating shaft 202 is rotatably arranged inside the third cylinder 201, and a second spiral sheet 203 is arranged on the rotating shaft 202. A fourth gear 204 is arranged on the rotating shaft 202, and the fourth gear 204 is meshed with a fifth gear 205 on the output shaft of the second motor 206. The second motor 206 is installed on the outside of the third cylinder 201, and a second feed port 207 is arranged on the wall surface of the third cylinder 201, and a hopper 208 is arranged on the second feed port 207.

[0059] In a further embodiment, Figure 1 , 2 4, the electric control cabinet 501 is provided with a traction assembly 300 for pulling the wire 504 to move in the second cylinder 104 toward the cone head 102, the traction assembly 300 includes a gantry 301, a first pressing wheel 302 is provided in the gantry 301 through an axle 303, the axle 303 is connected to the output shaft of the third motor 304, the third motor 304 is installed on the electric control cabinet 501, and a vertically retractable telescopic rod 30 is provided on the top of the gantry 301 5. The telescopic rod 305 is composed of a rod sleeve 306 fixed to the door frame 301 and an inner rod 307 sliding in the rod sleeve 306. A compression spring 310 is arranged in the rod sleeve 306. The two ends of the compression spring 310 are respectively connected to the inner wall of the rod sleeve 306 and the upper end of the inner rod 307. A wheel seat 308 is arranged at the lower end of the inner rod 307. A second pressure wheel 309 is arranged in the wheel seat 308 for radially pressing the wire 504 against the wheel groove on the wheel rim of the first pressure wheel 302.

[0060] The present invention extrude and wrap the outer skin layer 505 on the surface of the wire 504 through the cladding component 100 to form a suture. The present invention forms barbs 507 on the two convex strips 506 on the outside of the suture, which are still in a soft state, by the staggered movement of the first cutter 407 and the second cutter 415 on the symmetrically distributed cutting component 400. The cutting process of the barbs 507 on the suture can be completed without the cutting component 400 having a large cutting force and a high cutting accuracy. The present invention is desktop-level and has a small volume. The present invention can process the barbs 507 on the sewing line while keeping the cross section of the suture line circular, thereby ensuring that the suture line has the same use bendability in all directions, and does not affect the suture operation of the suture line during use.

[0061] The operation process of the present invention is as follows:

[0062] When the present invention is needed to process a suture with barbs 507, the wire 504 is first pressed between the first pressing wheel 302 and the second pressing wheel 309 and introduced into the second cylinder 104 through the flaring groove 105 at the end of the second cylinder 104 and passes through the second cylinder 104. Then, the third motor 304 is started to drive the first pressing wheel 302 to rotate, and the first pressing wheel 302 drives the wire 504 pressed by the second pressing wheel 309 to move toward the end of the cone head 102.

[0063] Next, the first motor 113 and the second motor 206 are started. The first motor 113 drives the first ring sleeve 106 to rotate through the third gear 112, the second gear 111 and the first gear 110. The first ring sleeve 106 drives the first spiral piece 107 to rotate synchronously. The second motor 206 drives the second spiral piece 203 to rotate through the fifth gear 205, the fourth gear 204 and the rotating shaft 202.

[0064] Raw materials are added into the funnel. The raw materials entering the funnel enter the third cylinder 201 through the second feed port 207. The raw materials entering the third cylinder 201 are driven by the second spiral sheet 203 to enter the first cylinder 101 through the first feed port 103. The raw materials entering the first cylinder 101 are driven by the first spiral sheet 107 to be extruded through the cone head 102. In the process of the raw materials moving toward the cone head 102, the electric heating layer 108 on the outside of the first cylinder 101 heats the raw materials and melts the raw materials, so that the raw materials have better fluidity in the process of moving toward the cone head 102.

[0065] When the molten raw material is extruded in a cylindrical state through the cone head 102 , the cylindrical raw material is wrapped around the wire 504 under the guidance of the cone head 102 to form an outer skin layer 505 and two convex strips 506 circumferentially spaced 180 degrees apart are formed on the outer skin layer 505 .

[0066] like Fig.16As shown in (a), during the movement of the wire 504 and the wrapping of the outer skin layer 505, the fourth motor 418 in the cutting assembly 400 is started, and the fourth motor 418 drives the second ring sleeve 402 to rotate through the seventh gear 417 and the sixth gear 416, and the second ring sleeve 402 drives the first rotary shell 403 and the end cover 405 to rotate synchronously, and the second ring sleeve 402 drives the third ring sleeve 411 to rotate through the eighth gear 419, the ninth gear 421, the tenth gear 422, the eleventh gear 423, the twelfth gear 424, and the thirteenth gear 425. The rotation speed of the third ring sleeve 411 is equal and the direction is opposite, and the third ring sleeve 411 drives the second rotary shell 403 and the end cover 405 to rotate synchronously. 12 rotate synchronously, the second rotating shell 412 drives all the second cutters 415 to move around the axis of the second ring sleeve 402 in the first cutter 407, and the first rotating body drives all the first cutters 407 to move synchronously around the axis of the second ring sleeve 402. When the first cutter 407 and the second cutter 415 reach both sides of the convex strip 506 at the same time, the first discharge port 404 on the first rotating shell 403 is opposite to the second discharge port 413 on the second rotating shell 412, and the baffle 408 at the end of the first cutter 407 closes the end of the first cutter 407 under the action of the vortex spring 410, so that a relatively closed space is formed between the first cutter 407 and the second cutter 415.

[0067] like Fig.16 As shown in (b), as the first cutter 407 and the second cutter 415 continue to move relative to each other, the first cutter 407 and the second cutter 415 cut a groove 508 on the convex strip 506, and the particles cut off from the convex strip 506 enter the second ring sleeve 402 through the first discharge port 404 and the second discharge port 413. The negative pressure device 503 generates negative pressure in the first rotating shell 403 through the second negative pressure pipe 502 and the first negative pressure pipe 426. The particles entering the first rotating shell 403 are discharged through the first negative pressure pipe 426 and the second negative pressure pipe 502 under the action of the negative pressure.

[0068] As the wire 504 , the first rotating shell 403 and the second rotating shell 412 move, the first cutter 407 and the second cutter 415 in the cutting assembly 400 cut grooves 508 axially distributed on the convex strips 506 of the outer skin layer 505 of the wire groove surface layer, and barbs 507 are formed between adjacent grooves 508 .

[0069] like Fig.16As shown in (c), after the first cutter 407 and the second cutter 415 shear on the convex strip 506 to form the groove 508, the first rotary shell 403 and the second rotary shell 412 are locked to continue rotating, the first cutter 407 and the second cutter 415 are staggered, the second cutter 415 enters the first cutter 407 and finally pushes open the baffle 408 at the end of the first cutter 407 to move to the next first cutter 407, and the vortex spring 410 corresponding to the baffle 408 is further compressed to store energy. When the second cutter 415 is separated from the baffle 408, the baffle 408 at the end of the first cutter 407 is in an open state and is about to reach the groove 508 on the convex strip 506. When the second cutter 415 is separated from the baffle 408, the baffle 408 swings back and resets under the action of the vortex spring 410 and closes the end of the first cutter 407 again and does not interfere with the first cutter 407 passing through the groove 508.

[0070] Since the convex strip 506 is still in a soft state when the first cutter 407 and the second cutter 415 shear the convex strip 506 to form the barb 507, the shearing force of the first cutter 407 and the second cutter 415 is small and the barb 507 can be processed more easily, the overall structure of the equipment is small, and the cost is saved.

Claims

1. A barbed medical suture production device, used for cutting and processing barbs on sutures, characterized in that: include: A plurality of cladding components, used for wrapping the outer skin layer on the surface of the wire by extrusion and forming two convex strips 180 degrees apart in the circumferential direction on the outer skin layer; A cutting assembly is used for cutting and forming barbs on the convex strips. The cutting assembly includes a rotating seat, a second ring sleeve driven by a fourth motor is rotatably arranged in the rotating seat, a first rotating shell with an end opening is arranged at one end of the second ring sleeve, an end cover forming an annular gap with the first rotating shell is arranged at the end opening of the first rotating shell, a plurality of first discharge ports are evenly arranged on the cylindrical surface of the first rotating shell, a first cutter integrally connected to the first rotating shell and the end cover is arranged at one circumferential end of the first discharge port, a baffle is hinged at one end of the first cutter, a vortex spring for driving the baffle to close is arranged between the baffle and the first cutter, a third ring sleeve connected to the second ring sleeve is rotatably arranged in the second ring sleeve, the third ring sleeve rotates in the same speed and in the opposite direction with the second ring sleeve, a second rotating shell is arranged at one end of the third ring sleeve, and second discharge ports equal in number to the first discharge ports are evenly arranged on the cylindrical surface of the second rotating shell, a second cutter cooperating with the first cutter is connected at one circumferential end of the second discharge port through a connecting block, and the connecting block and the second cutter slide in the annular gap and the first cutter respectively.

2. The barbed medical suture production equipment according to claim 1, characterized in that: The rotating seat is arranged on the electric control cabinet, the fourth motor is arranged on the rotating seat, a seventh gear is arranged on the output shaft of the fourth motor, and the seventh gear is meshed with the sixth gear on the second ring sleeve.

3. The barbed medical suture production equipment according to claim 1, characterized in that: The baffle is hinged to the first cutter through a round pin fixed thereon, the two ends of the vortex spring are respectively connected to the round pin and the first cutter, and the other end of the third ring sleeve is rotatably provided with a first negative pressure tube, which is connected to the second negative pressure tube on the negative pressure device.

4. The barbed medical suture production equipment according to claim 1, characterized in that: An eighth gear is arranged on the second ring sleeve, two fixed seats which are 180 degrees apart in the circumferential direction are arranged on the rotating seat, a ninth gear which meshes with the eighth gear is arranged on the fixed seat, the ninth gear meshes with the tenth gear on the corresponding fixed seat, an eleventh gear is arranged on the shaft where the tenth gear is located, the eleventh gear meshes with the twelfth gear on the corresponding fixed seat, and the twelfth gear meshes with the thirteenth gear on the third ring sleeve.

5. The barbed medical suture production equipment according to claim 4, characterized in that: The rotational linear speeds of the tenth gear and the eleventh gear are equal.

6. The barbed medical suture production equipment according to claim 1, characterized in that: The cladding component includes a first cylinder, which is arranged on the electric control cabinet through a bracket, a cone head is arranged at one end of the first cylinder, a coaxial second cylinder is arranged inside the first cylinder, both ends of the second cylinder are fixedly connected to the first cylinder through three circumferentially evenly distributed connecting rods, a first ring sleeve driven by a first motor is rotatably arranged on the outer side of the second cylinder, a first spiral sheet is arranged on the first ring sleeve, a first feed port is arranged on the wall surface of the non-conical head end of the first cylinder, a feeding assembly is arranged at the first feed port, and an electric heating layer is arranged on the outer side of the first cylinder.

7. The barbed medical suture production equipment according to claim 6, characterized in that: The first ring sleeve seal rotates in the annular gap between the first cylinder and the second cylinder. The first ring sleeve is provided with a first gear, the first gear is meshed with a second gear installed on the bracket, the second gear is meshed with a third gear installed on the output shaft of the first motor, and the first motor is installed on the electric control cabinet.

8. The barbed medical suture production equipment according to claim 6, characterized in that: The inner wall of the entrance end of the second cylinder is provided with a flaring groove for facilitating the entry of the wire.

9. The barbed medical suture production equipment according to claim 6, characterized in that: The feeding assembly includes a third cylinder, which is connected to the first feed port of the first cylinder. A rotating shaft is rotatably arranged inside the third cylinder, a second spiral sheet is arranged on the rotating shaft, a fourth gear is arranged on the rotating shaft, the fourth gear is meshed with a fifth gear on the output shaft of the second motor, the second motor is installed on the outside of the third cylinder, a second feed port is arranged on the wall surface of the third cylinder, and a hopper is arranged on the second feed port.

10. The barbed medical suture production equipment according to claim 6, characterized in that: The electric control cabinet is provided with a traction component for pulling the wire to move in the second cylinder toward the cone head, the traction component includes a door frame, a first pressure wheel is arranged in the door frame through a wheel axle, the wheel axle is drivingly connected to the output shaft of the third motor, the third motor is installed on the electric control cabinet, a vertically retractable telescopic rod is arranged on the top of the door frame, the telescopic rod is composed of a rod sleeve fixed to the door frame and an inner rod sliding in the rod sleeve, an extrusion spring is arranged in the rod sleeve, the two ends of the extrusion spring are respectively connected to the inner wall of the rod sleeve and the upper end of the inner rod, the lower end of the inner rod is provided with a wheel seat, and a second pressure wheel is arranged in the wheel seat for radially pressing the wire against the wheel groove on the wheel rim of the first pressure wheel.

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