42 results about "Barbed suture" patented technology

The invention discloses barb suture production equipment, and relates to the technical field of surgical suture production. The equipment comprises a feeding mechanism, at least two clamping and rotating mechanisms, a suture cutting mechanism and a barb cutting mechanism. The feeding mechanism conveys a surgical suture, the surgical suture passes through the suture cutting-off mechanism and then is conveyed to the clamping and rotating mechanisms, so that the two ends of the surgical suture are clamped by the different clamping and rotating mechanisms respectively, and the surgical suture is kept in a tightened state. At the moment, the suture cutting-off mechanism cuts off the surgical suture located between the feeding mechanism and the clamping and rotating mechanism. The barb cutting mechanism is used for conducting barb cutting operation on the surgical suture to form barbs on the surgical suture, and after the barbs are formed on one side of the surgical suture, the clamping and rotating mechanism rotates the surgical suture so that the barb cutting mechanism can conveniently form barbs on the other side of the surgical suture. In this way, barbs can be formed on the two sides of the surgical suture respectively only through one barb cutting mechanism, and the production cost can be reduced.

The invention relates to the technical field of suture line processing equipment, and particularly discloses a cutting device for a barb suture line and a barb cutting technology.The cutting device comprises a base, a line inlet guide mechanism, a barb cutting mechanism and a line outlet guide mechanism are arranged at the two ends of the base respectively, and the barb cutting mechanism comprises a carrier plate; a center hole for a suture line to pass through is formed in the carrier plate, two cutting clamping seats are symmetrically arranged on the carrier plate located on the two sides of the center hole, linear grooves are formed in the side faces, close to each other, of the two cutting clamping seats, and cutting knife assemblies are arranged on the cutting clamping seats. One end of the cutting knife assembly extends into the linear groove through a groove formed in the cutting clamping seat; according to the cutting device for the suture line with the barbs, continuous and high-speed barb cutting of the suture line is achieved, the production efficiency is remarkably improved, the barbs formed after cutting can be outwards kept at a large unfolding angle, and the grabbing force and the connecting stability of the barbs in the using process are enhanced.

This invention belongs to the field of medical device technology and discloses a barbed suture and its preparation method. The barbed suture includes a suture body and barbs formed on the suture body. The preparation method involves irradiating the horizontally arranged suture body with a laser beam emitted from a laser, the temperature of which is higher than the melting temperature of the suture body. T m At the same time, it is lower than the thermal decomposition temperature of the suture body. T d The laser is positioned directly above or slightly above the suture body. The laser beam is decomposed into horizontal and vertical components. The horizontal component is parallel to the length of the suture body, and the vertical component points downwards. During irradiation, the laser reciprocates along a horizontal direction perpendicular to the length of the suture body, causing the laser beam to cut the suture body and form barbs. This invention allows the barbs to bend and curl upwards, achieving high-curvature barbs, and the resulting barbed sutures do not suffer from insufficient strength due to a reduction in suture diameter.

The utility model discloses a barb suture line tail end welding device which comprises a welding device body, the welding device body comprises a base, two line clamping plates are arranged on the upper surface of the base, a barb suture line body is clamped at the connecting position of the two line clamping plates, and a convenient adjusting mechanism is further arranged on the welding device body. By designing a convenient adjusting mechanism, when a bidirectional lead screw rotates, two moving frames can be driven to oppositely move on the outer surface of the bidirectional lead screw, two wire clamping plates are driven to stably and oppositely move to clamp and fix the tail end of a barb suture line body, accurate and corresponding clamping is convenient to adjust, the wire clamping plates are not prone to loosening when the barb suture line body is loosened after being clamped, and the working efficiency of the barb suture line body is improved. The tail end of the barbed suture line body is more firmly clamped and accurately welded, and the convenience of adjusting the line clamping plate and the welding accuracy are improved when the welding device main body performs welding operation on the tail end of the barbed suture line body.

The application discloses a preparation method of barbed silk suture, which comprises the following steps: after degumming and activation, the silk suture is immersed in a ginsenoside finishing liquid for padding treatment, and then is baked and dried; the drug-loaded silk suture is put into a mold, a silk fibroin solution is poured into the mold, and after removing bubbles, the silk suture is dried; the dried silk suture is taken out and subjected to wet heat treatment to obtain the barbed silk suture; during the degumming process, an alkali solution with a mass concentration of 0.02-0.08% is used for degumming; and during the activation process, a strong alkali solution with a concentration of 5g / L-50g / L is used for activation. The preparation method of the barbed silk suture applies ginsenoside and silk fibroin to the production and formation of the barbed suture; the polysaccharide chain in the ginsenoside can form stable hydrogen bonds with the silk fibroin, so that the ginsenoside can act on a wound for a long time (long-term sustained release), the drug effect is prolonged, the inflammation of the wound is effectively improved, and the wound healing is promoted.

This utility model discloses a highly stable medical barbed suture, belonging to the field of medical devices. The medical barbed suture of this utility model includes a suture body and a plurality of barbs spaced apart along the length of the suture body. The barbs are cut by removing material. The outer side of each barb has an insertion surface and an outer edge surface sequentially from front to back. The insertion surface extends obliquely outward from the front side of the barb's root to the outer edge surface. The outer edge surface is parallel or approximately parallel to the centerline of the suture body. The inner surface of the barb extends obliquely outward from the rear side of the barb's root, and the outer edge surface intersects with the inner surface to form a barb tip. The barbs of this utility model have a stable shape and good inner support, balancing tissue damage and tissue holding power. Furthermore, the outer edge surface of the barb is parallel or approximately parallel to the centerline of the suture body, allowing for maximum width cutting to form the barbs, reducing raw material waste. Larger barbed sutures can be made from the same diameter round suture, reducing the manufacturing cost of the barbed suture.

The utility model discloses a surgical suture line forming device which comprises a male die assembly and a female die assembly, the male die assembly comprises a male die installation plate and at least two sets of male dies, the female die assembly comprises a female die installation plate and at least two sets of female dies, and the section of each female die is in a barb line shape; a first inserting groove extending in the first direction is formed in the male mold mounting plate, and at least two groups of male molds are fixedly embedded in the first inserting groove in sequence; a second inserting groove extending in the first direction is formed in the female die mounting plate, the at least two sets of female dies are sequentially embedded in the second inserting groove, an elastic piece is further arranged in the second inserting groove, and in the initial state, under the action of the elastic piece, part of the area of the female dies is located on the outer side of the forming face of the female die mounting plate; a first limiting part is arranged on the forming surface of the male mold mounting plate and / or the female mold mounting plate, the first limiting part is suitable for being matched with the surface, oppositely arranged in the second direction, of the to-be-machined suture line so as to limit the position of the to-be-machined suture line in the second direction, and the second direction is perpendicular to the first direction. The barbed suture line forming device can achieve one-time forming of barbed suture lines.

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.

A wound closure device includes a filamentary element having a proximal end and a distal end, and a plurality of barbs extending outwardly from the filamentary element. Each barb has a base connected with the filamentary element, a tip spaced from the base, and an outer edge that extends between the base and the tip. The outer edge includes a first section having a concave surface that extends between the base and a transition point of the barb and a second section having a convex surface that extends between the transition point of the barb and the tip of the barb. The outer edge transforms from the concave surface of the first section to the convex curve of the second section at the transition point of the barb. The tip of the barb has a convexly curved surface facing the distal end of the filamentary element. The unique dual radius shape of the outer edge of the barbs and the tips of the barbs minimizes resistance when the filamentary element is pulled in a first direction through tissue and maximizes resistance to movement when the filamentary element is pulled in an opposite, second direction through tissue for holding the wound closure device stationary.

The invention provides a barb suture line and a preparation method thereof, and relates to the field of surgery and medical cosmetology, the preparation method of the barb suture line comprises the following steps: S1, extruding a thin-wall hollow tube through an extruder; s2, hot cutting is conducted on the pipe wall of the hollow pipe, and barbs are formed; and S3, cutting is conducted in the axis direction of the hollow pipe, and a kerf belt which does not penetrate through the pipe wall is formed. According to the preparation method of the barbed suture line, the thin-wall hollow pipe is obtained through extrusion molding, then thermal cutting is performed to form the barbs on the pipe wall, and the kerf belt is formed through non-through cutting in the axis direction, so that the suture line has better flexibility, the barbs generated by thermal cutting enhance the anchoring force, and the suture line is more flexible. The stability of the suture line in tissues is ensured; in addition, due to the non-through design of the kerf belt, the ductility of the suture line is improved, the suture line can adapt to tissue activity, the possibility of breakage is reduced, and therefore the reliability and the clinical effect of the suture line are improved.

A single-armed suture assembly includes a needle, a flexible suture, and a flexible sheath. The flexible suture is coupled with the needle. The flexible suture includes first and second portions. The first portion includes a plurality of first barbs having first tips extending away from the longitudinal path in either an insertion direction or in a counter insertion direction that is opposite to the insertion direction. The second portion includes a plurality of second barbs having second tips extending opposite to the first tips. The flexible sheath is configured to prevent one of the first or second tips that extend in the insertion direction from contacting tissue as the flexible sheath is being advanced in the insertion direction. The other of the first or second tips that extend in the counter insertion direction is configured to contact tissue as the flexible sheath is being advanced in the insertion direction.

A barbed suture may include a body and a plurality of barbs. The body may include a substantially flat surface extending along a longitudinal axis of the body, and the plurality of barbs may be formed on a surface of the body that is not the substantially flat surface. The body may have a non-circular cross-sectional shape, and the plurality of barbs may be formed along a longitudinal axis of the body on a corner of the cross-sectional shape. A tissue repair device may include a base membrane and a plurality of barbed sutures attached to the base membrane.

The intracorporeal suture device is intended to provide users with a medical device that may be used to retract intraabdominal organs and tissue for better exposure during minimally invasive procedures (laparoscopic and robotic surgical procedures). More specifically, the device allows for retraction without the need for needle extraction through the abdominal wall, thereby avoiding risk for infection, contamination, bleeding and iatrogenic vessels or nerves injuries. Accordingly, the single device includes differently shaped needle structures integrated onto a barbed suture that allows for safe and reliable retraction of organs during MIS procedures. Further, the device includes a flat area for easy handling of needles during intracorporeal manipulation avoiding the needs of a needle holder. Furthermore, the device includes additional drainage structures that helps with retraction of larger organs as well as collection of fluids during the procedures.

The invention discloses a medical barb suture line giving consideration to tissue puncture injury and anti-sliding performance, and belongs to the field of medical instruments. The medical barb suture line comprises a line body and a plurality of barb units arranged at intervals in the length direction of the line body, each barb unit comprises a flexible barb and a rigid barb, the flexible barbs obliquely extend outwards from the line body, the rigid barbs extend outwards from the line body, and the rigid barbs are located on the oblique extending sides of the flexible barbs. The free end of the flexible barb extends to the outer side of the rigid barb, and a containing gap is formed between the flexible barb and the rigid barb. The flexible barbs and the rigid barbs cooperate with each other, so that when the suture line punctures a tissue, the flexible barbs can contract inwards under inward extrusion of the tissue, and damage to the tissue is reduced; when the suture line is subjected to reverse pulling force, the rigid barbs can hook the tissue, the tissue grasping force is further increased through the deformation and opening effect of the flexible barbs, and the anti-sliding capacity of the suture line is improved.

The utility model discloses a barb suture line pressing device which comprises a base table and an auxiliary table connected to one side of the base table. The placing assembly comprises a placing piece which is mounted on the top surface of the base table and has one end extending out of the base table, and an inserting groove which is formed in one end of the placing piece and is of an arc-shaped structure; the clamping assembly comprises an L-shaped fixing frame fixed to the top face of the base table, a threaded rod B connected to the end of the fixing frame in a threaded mode, and a rubber extrusion block fixedly connected to the bottom end of the threaded rod B; through the designed placing assembly and clamping assembly, a suture needle of an arc-shaped structure can be clamped and fixed, an inserting groove in a placing piece can be matched with the shape of the suture needle, the suture needle is right inserted into the inserting groove, the tail end of the suture needle extends out of the placing piece, and then a rubber extrusion block is used for extruding and fixing the suture needle; through cooperation of the structure, the suture needle can be accurately and stably clamped and fixed, and subsequent connection operation with a barb suture line is facilitated.

The invention discloses a preparation method of a PPDO composite material and an absorbable suture line with barbs, and belongs to the technical field of medical biomaterials.Silica-based Janus particles are prepared through a one-pot method and serve as active interfaces after being coated with polydopamine, ZIF-8 crystal shells are guided to grow in situ, epigallocatechin gallate is synchronously encapsulated, and the absorbable suture line with the barbs is prepared. The preparation method comprises the following steps: preparing antibacterial composite particles, compounding the antibacterial composite particles, poly (p-dioxanone), polylactic acid, quinazarin and acetyl tributyl citrate through a melt blending process to obtain a PPDO composite material, carrying out melt spinning and stretching heat setting on the PPDO composite material to prepare the antibacterial absorbable suture line, and carrying out mechanical cutting and eversion process processing to obtain the antibacterial absorbable suture line. The absorbable suture line with the barbs, which has excellent mechanical strength and long-acting antibacterial property, is obtained.

The application discloses a barbed silk suture, which comprises a thread body in the inside, a silk surface body wrapped on the surface of the thread body, and a plurality of barbs protruding outward from the silk surface body; the barbed silk suture is prepared by the following method: after degumming and activation, the silk suture is immersed into a ginsenoside finishing liquid for padding treatment, and then baked and dried; the drug-loaded silk suture is put into a mold, a silk fibroin solution is poured into the mold, and after removing bubbles, the silk suture is dried; the dried suture is taken out and subjected to wet heat treatment to obtain the barbed silk suture. The barbed silk suture of the application applies ginsenoside and silk fibroin to the preparation and formation of the barbed suture; the polysaccharide chain in the ginsenoside can form stable hydrogen bonds with the silk fibroin, so that the ginsenoside can act on the wound persistently (long-term sustained release), prolong the drug effect, effectively improve the inflammation of the wound, and promote the wound healing.

The invention relates to barb suture line multi-line multi-angle machining and cutting equipment. The barb suture line multi-line multi-angle machining and cutting equipment comprises a rack, a feeding device, a multi-shaft line pressing and rotating device, a multi-line cutting table, a cutting device, a multi-shaft clamping and rotating device and a traction device. The multi-shaft line pressing rotating device comprises a plurality of rotating shafts arranged side by side, a plurality of suture lines penetrate through different rotating shaft center holes respectively, and roller sets used for clamping the suture lines are arranged at the ends of the rotating shafts. The first driving element drives the multiple rotating shafts to rotate synchronously so as to drive the multiple suture lines to rotate synchronously around the axes of the suture lines. The multi-shaft clamping and rotating device comprises a plurality of thread pulling clamping jaws arranged side by side, and the second driving element drives the thread pulling clamping jaws to synchronously rotate so as to be matched with the multi-shaft thread pressing and rotating device to drive the multiple suture threads to synchronously rotate around the axes of the suture threads. Synchronous processing of a plurality of suture lines is achieved, the processing efficiency of the suture lines is improved, and the size of the whole machine is small.

The utility model discloses barbed suture line processing and positioning equipment which comprises a driving assembly for driving a barbed suture line bobbin, a fixed seat and a driving motor which are fixedly connected through a screw, and a driving shaft fixed with the driving motor through a screw, and a fixed plate is fixed on the side of the fixed seat through a screw. A laser sensor is fixed on the fixed plate through a screw; the lifting assembly comprises an electric push rod fixed to the fixing base through a screw, a fixing block fixed to the top of the electric push rod through a screw, a rotating cylinder rotationally connected with the fixing block, and a clamping piece penetrating through the rotating cylinder in a sliding mode. The adjusting assembly comprises a motor linear guide rail fixed to the outer surface of the fixing base through a screw and a connecting plate fixed to a sliding block on the motor linear guide rail through a screw. Through the designed guide assembly, the stretched barb suture line is limited by the rotating wheel on the first guide rod and the alternately distributed second guide rods, and the barb suture line close to the bobbin is prevented from shaking.

The utility model discloses a barb suture cutting device, and relates to the technical field of medical sutures, the barb suture cutting device comprises a positioning mechanism and a cutting mechanism, the positioning mechanism is used for positioning a suture to be cut; the cutting mechanism is arranged beside the positioning mechanism and comprises a rotary driving structure and a cutter driving structure, the driving end of the rotary driving structure is connected with the cutter driving structure and used for adjusting the angle of the cutter driving structure relative to the sewing thread, and the cutter driving structure is used for cutting the sewing thread. The production efficiency and the sewing quality of the sewing thread can be improved.

This invention belongs to the field of online inspection technology, specifically a multi-parameter visual online inspection method and device suitable for barbed sutures. The method includes: defining suture inspection parameters; obtaining parameter adjustment data based on material reflectivity and morphological characteristics; adjusting the suture inspection parameters according to the parameter adjustment data to obtain target inspection parameters; acquiring multi-view image data of the current barbed suture; processing the data using a multi-view inspection method to obtain multi-dimensional inspection data; determining whether the multi-dimensional inspection data meets a preset threshold based on the target inspection parameters; outputting a pass / fail result if yes, otherwise marking the defect location type; analyzing the correlation between the defect location type and the suture inspection parameters to obtain defect detection correlation correction data; and adjusting the target inspection parameters to obtain accurate inspection parameters. This invention can adapt to the inspection needs of barbed sutures of various materials and specifications, reducing equipment investment costs and improving inspection accuracy and stability.

This application relates to the field of medical suture technology, specifically disclosing a PDO barbed suture with an antibacterial coating and its preparation method. The PDO barbed suture with an antibacterial coating is prepared by blending and spinning a PDO mixed suture matrix with polylactic acid (PLA) and polydioxanone (PD-dioxanone) in a certain proportion to obtain a PDO mixed suture matrix with good mechanical properties. Then, using hyaluronic acid as a gel matrix, 4-(ethylene oxide-2-ylmethoxy)butyl acrylate is grafted onto the hyaluronic acid for alkenyl modification. Next, it is mixed with quercetin-3-O-glucoside and TCS@ZIF-8 loaded with oridonin to obtain an antibacterial gel coating. Finally, the PDO mixed suture matrix is ​​impregnated in the antibacterial gel coating and prepared by ultraviolet light irradiation under a photoinitiator. The suture obtained by this application has the advantages of a smooth coating, highly efficient and durable antibacterial properties, high strength, good flexibility, low friction, and high operability.

The invention belongs to the technical field of medical supplies, and discloses a barb suture line and a preparation method thereof.The barb suture line comprises a suture line body and barbs formed on the suture line body; according to the preparation method, a laser device is adopted to emit a laser beam to irradiate a horizontally-arranged suture line body, and the temperature of the laser beam is higher than the melting temperature Tm of the suture line body and lower than the thermal decomposition temperature Td of the suture line body; the laser is located right above or laterally above the suture line body, a laser beam is decomposed into a horizontal component and a vertical component, the horizontal component is parallel to the length direction of the suture line body, and the vertical component is downward; in the irradiation process, the laser reciprocates in the horizontal direction perpendicular to the length direction of the suture line body, so that the suture line body is cut by a laser beam, and barbs are formed. The barbs can be bent and tilted, high-tilting-degree barbs are achieved, and the situation that the strength of the manufactured barb suture line is not enough due to the fact that the diameter of the suture line is reduced is avoided.

The invention relates to the technical field of medical surgery, in particular to a deformable barb type anchor with a thread, and adopts the technical scheme that the deformable barb type anchor comprises an anchor main body; one end of the anchor main body is fixedly connected with a tip end, the other end of the anchor main body is provided with a line hole, the periphery of the surface of the anchor main body is provided with mounting holes, the surfaces of the mounting holes are fixedly connected with degradable protective sheaths, the inner walls of the mounting holes are rotatably connected with rotating shafts, and the surfaces of the rotating shafts are fixedly connected with barbs. The anchor main body is made of the high-strength biocompatible material, and is matched with the conical design of the tip end and the structure that the suture line penetrates through the line hole, so that the anchor can smoothly penetrate through soft tissue or bone tissue when being implanted, and meanwhile, a reliable connection point is provided for subsequent soft tissue fixation; therefore, the stable implanting and multifunctional fixing effects of the anchor are achieved.

The application relates to a kind of absorbable surgical barbed suture assembly, belonging to the technical field of surgical medical supplies.The application includes a take-up box, the outer wall of the take-up box is fixedly connected with a delivery box, the inner wall of the delivery box is rotatably connected with a bidirectional screw, the outer wall of the bidirectional screw is threadedly connected with a moving plate, the inner wall of the delivery box is provided with a cutting mechanism to cut the suture obliquely when taking the suture, and the outer wall of the take-up box is provided with a clamping mechanism to clamp and fix the suture when cutting the suture.The rotation of the bidirectional screw drives the two moving plates to displace towards each other, so that the two cutters relatively displace, and the outer wall of the suture is extruded and cut by the cutting edge of the cutter.Because of the inclined design, the cutter cuts obliquely, which can avoid cutting the barbed suture tissue, ensure the function and quality of the cut suture, and prevent the barbed tissue from falling as debris after being cut.

The utility model relates to the field of wound suture, in particular to an interval type barb suture line and an interval type barb suture assembly. The interval type barb suture line comprises a plurality of barb sections and a plurality of smooth sections which are arranged at intervals in the extending direction. Wherein the lengths of the barb section and the smooth section are configured as follows: at least the middle part of the barb section is buried under the skin after the wound is sutured, and at least the middle part of the smooth section is exposed outside the skin. According to the utility model, at least most of the part of the barb suture line exposed outside the skin is smooth, so that the damage to the skin at the sutured part is weakened.

The application discloses a tension-reducing skin suture thread feeding method. The tension-reducing skin suture thread feeding method shoots a suture needle through a suture device, and then feeds a barbed suture thread for skin suture; a plurality of suture needles are arranged on the suture device, and an independently arranged barbed suture thread is arranged on each suture needle, and the barbed suture thread can be separated from the suture needle; the suture device comprises a needle changing mechanism for switching the suture needle to be shot; and the suture device comprises a firing mechanism for firing the suture needle to be shot.

The invention discloses an absorbable surgical barb suture assembly, and belongs to the technical field of surgical medical supplies. The device comprises a take-up box, the outer wall of the take-up box is fixedly connected with a conveying box in a penetrating mode, the inner wall of the conveying box is rotatably connected with a two-way screw in a penetrating mode, the outer wall of the two-way screw is in threaded connection with a moving plate, and a cutting mechanism is arranged on the inner wall of the conveying box and used for obliquely cutting off sewing threads during thread taking. A clamping mechanism is arranged on the outer wall of the take-up box, so that the sewing thread can be clamped and fixed when the sewing thread is cut off. The two moving plates are driven to move towards each other through rotation of the two-way screw rod, so that the two cutters move relatively, the outer wall of a suture is extruded and cut through the knife edges of the cutters, and due to the inclined design and inclined cutting of the cutters, barb tissue of the suture can be prevented from being cut off, the function and quality of the cut suture are guaranteed, and the suture cutting efficiency is improved. And the barbed tissues are prevented from falling in a chipping form after being cut off.

The single-arm suture assembly includes a needle, a flexible suture, and a flexible sheath. The flexible suture is coupled to the needle. The flexible suture includes a first portion and a second portion. The first portion includes a plurality of first barbs having a first tip extending away from the longitudinal path in either an insertion direction or a reverse insertion direction opposite the insertion direction. The second portion includes a plurality of second barbs having a second tip extending opposite the first tip. The flexible sheath is configured to prevent one of the first tip or the second tip extending in the insertion direction from contacting tissue when the flexible sheath is advanced in the insertion direction. The other of the first tip or the second tip extending in the reverse insertion direction is configured to contact tissue when the flexible sheath is advanced in the insertion direction.