25 results about "Silk sutures" patented technology

The utility model relates to a simple minimally invasive fascia stitching instrument. Comprising a sleeve with a tip at the front end, a telescopic inner rod is arranged in the sleeve, and an elastic lantern ring used for being connected with a silk thread is arranged at the front end of the telescopic inner rod; an operating handle is arranged at the rear end of the sleeve, a fixed seat is arranged behind the operating handle through a neck part, a threaded hole is formed in the center of the fixed seat, a central hole for communicating an inner cavity of the sleeve with the threaded hole is formed in the center of the operating handle and the center of the neck part, and a pushing handle is arranged at the rear end of the telescopic inner rod; an external thread part is further arranged at the root of the telescopic inner rod and located in the threaded hole, and when the telescopic inner rod is operated by pushing the handle to move forwards or backwards in the axial direction, the elastic lantern ring moves out of or retracts into the front end of the sleeve. The utility model provides a simple minimally invasive fascia stitching instrument, which improves the convenience of operation, reduces the range of injury to fascia tissues, can effectively pull out a silk thread in an abdominal cavity, and ensures the stitching effect of fascia.

The utility model relates to the technical field of medical instruments, in particular to an incision protection sleeve for thyroid surgery. The notch protection sleeve is made of an elastic strip-shaped material with a circular-arc-shaped section, a connecting structure (10) and a matching structure (20) are arranged at the two ends of the notch protection sleeve respectively, the two ends of the notch protection sleeve are connected to form a circular cylinder, the connecting structure (10) is two through holes formed side by side, and the matching structure (20) is two axial through grooves formed side by side; when the two ends of the protective sleeve coincide and are aligned, the two through holes are located in the inner sides of the two axial through grooves. According to the utility model, a simple structure is adopted, an operation silk thread and scissors are matched, an annular cylinder body which strictly corresponds to an incision in size can be formed, the ring diameter is continuously adjustable, the production cost is low, the use is convenient, the flaring function is realized, and the improvement of the operation adaptability is facilitated.

The utility model relates to the technical field of five-thread overedgers, and discloses a five-thread overedger with an adjustable tailstock, which comprises a mounting panel, a first adjusting component, a second adjusting component, a third adjusting component and a fourth adjusting component, and the first locking assembly is arranged on the outer side of the annular sleeve and used for increasing the dismounting speed of the pay-off assembly and the pay-off assembly. Height adjustment and angle adjustment are conducted on the thread stand through the first adjusting assembly and the second adjusting assembly according to actual conditions, so that a silk thread is driven to be in a tightened state all the time, the silk thread has a more suitable thread inlet angle, sewing work of an overedger body at different heights and different angles is facilitated, and the sewing efficiency is improved. The functionality of the overedger in a special scene and the practicability of the thread stand are expanded; and by arranging the first locking assembly and the second locking assembly, disassembly and assembly of the pay-off assembly, the wire outlet assembly and the wire guide assembly are facilitated, and quick disassembly and quick assembly between the wire frame assemblies are facilitated.

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.

The anti-falling umbilical vein catheter comprises an umbilical vein catheter body with the inner end inserted into the body, a first buckle is embedded in the portion, located outside the body and close to the umbilical region, of the umbilical vein catheter body in a clamped mode, the first buckle is attached to the surface of the skin, and the first buckle and the skin are connected and fixed through a silk thread. A sterile gauze covering the umbilical vein catheter and the first buckle is laid on the abdomen of the child patient, a circle of wide bellyband is wound around the abdomen of the child patient and attached to the sterile gauze, a second buckle located on one side of the abdomen of the child patient is attached to the bottom of the wide bellyband in a pressing mode, and meanwhile the outer end of the umbilical vein catheter sequentially penetrates through the first buckle and the second buckle. When the wide-body bellyband is used, in order to prevent the umbilical vein catheter from falling off when the wide-body bellyband is loosened, the two connecting bands are arranged at the connecting end of the bellyband, in the dressing changing process, the half-winding section of the catheter can be temporarily transferred to the bottom of the connecting band which is not loosened, and the wide-body bellyband can further position and stabilize the sterile gauze.

The utility model discloses a transvaginal sacrospinous ligament puncture outfit which comprises a needle box, a transmission rod mechanism, a fixed handle and a movable handle, one end of the transmission rod mechanism is connected with the needle box, and the other end of the transmission rod mechanism is connected with the fixed handle; an arc-shaped guide channel used for containing a puncture needle is arranged in the needle box, and a needle unloading groove is obliquely formed in the lower portion of the needle box. A silk thread is drawn on the puncture needle; the movable handle is hinged to the fixed handle and connected with the fixed handle through an elastic piece, and the movable handle can rotate relative to the fixed handle under the action of external force so as to drive the transmission rod mechanism to drive the puncture needle to do reciprocating arc motion along the arc-shaped guide channel to complete puncture or needle withdrawing. According to the transvaginal sacrospinous ligament puncture outfit, sacrospinous ligament puncture suture in a narrow space can be achieved, the puncture success rate is effectively increased, the tissue gap separation range is reduced, the damage risk of tissues such as blood vessels and nerves in an operation is effectively reduced, and the minimally invasive effect of transvaginal sacrospinous ligament suspension operation is further improved.

The present invention relates to a body cavity regulating device, comprising: an adjustable curved catheter, the catheter comprising an axial tube wall and an axial tube cavity surrounded by the tube wall; an expandable mechanism fixedly sleeved on the catheter; and a cable, the cable is movably arranged in the tube cavity, and the tube wall arranged on one side of the expandable mechanism passes through the tube cavity, so that the catheter is bent relative to the expandable mechanism and then passes back into the tube cavity from the tube wall. During operation, it is only necessary to change the expansion state of the expandable mechanism and lock the adjustable curved catheter through the cable, which is simple to operate and highly safe. The use of an expandable mechanism with a larger contact area will not cause excessive stimulation to the local body cavity. The limitation of the body cavity can be released by controlling the cable, and the release process is convenient. Compared with the traditional silk thread winding method, it can still perform unlocking, blood flow regulation and reflow operations after wound suturing, without the need to unlock and remove in a visual environment, and there is no risk of entanglement and knotting.

The utility model relates to the technical field of medical equipment, and discloses a surgical suture fixing box which comprises a box body, a disinfection box is arranged in the box body, and a cover plate is connected to the outer side of the box body in a sliding mode. A wire bunching assembly is rotatably connected in the box, a wire pressing assembly is slidably connected to the outer side wall of the box, the wire pressing assembly comprises a bracket, a pressing rod is further slidably connected to the box, a pressing block is arranged at the bottom end of the pressing rod, and the bracket is further slidably connected with a protective sleeve matched with a wire; during use, the pressing block can be controlled to move downwards by pressing the pressing rod, silk threads are fixed through the dragging seat, when the silk threads need to be used again, the protective sleeve can be pushed to lift the pressing block through the inclined face on the pressing block, and then thread ends can be taken out. The fixing box has the advantage that the bevel gear set drives the rotating rod to control the movement of the operation line in the line guide tube, and the problem that after the operation line is cut off by a traditional fixing box, the line end is inconvenient to find again is solved.

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 present application is about a preparation method of silk suture based on enzymatic grafting of chitosan oligosaccharide-protocatechuic acid, and relates to the field of medical antibacterial textile materials. In the present application, the chitosan oligosaccharide modified with protocatechuic acid is coupled with the degummed silk fiber by laccase promotion, and then the modified silk fiber is formed into a braided wire using a braiding machine, and finally the silver nanoparticles are stably deposited on the silk braided wire by amino-mediated reduction of silver ions, thereby achieving the excellent antibacterial properties of the silk braided wire. In this case, the antibacterial properties of the silk suture are improved by protocatechuic acid and chitosan oligosaccharide, and more silver nanoparticle deposition sites are provided; it is achieved that a suture can be completed on a medical braiding machine, the process adjustment is convenient, the thickness and length of the product are highly adjustable, no toxic chemical reagents are used, personal health is guaranteed, and it can be safely and widely used in medical, health and other fields.

This invention discloses a polyglycolic acid (PGA) suture-silk suture composite braided surgical suture and its preparation method. The suture is composed of two absorbable surgical sutures (PGA) and two non-absorbable surgical sutures (silk threads) in a multi-strand braided structure. The silk threads are black in color, and their main component is silk fibroin with a molecular weight greater than 30,000. The PGA sutures are pre-dyed with D&C Violet No. 2 dye before braiding, and then heat-set and sterilized with ethylene oxide after braiding. This invention utilizes the dense structure formed by the multi-strand braid to effectively prevent wound exudate from seeping into the suture interior, reducing the corrosive effect of liquid on the internal materials. Simultaneously, through the synergistic composite of PGA sutures and silk threads, a coordinated match is achieved between the suture's mechanical strength and degradation characteristics, resulting in a suture that combines stable support with suitable degradability, better meeting the needs of general soft tissue suturing and ligation in clinical practice.

The invention belongs to the technical field of fabrics, and particularly relates to an antibacterial pure silk fabric and a preparation process thereof. The preparation process comprises the following steps: (1) mixing nano TiO and water, carrying out ultrasonic treatment, continuously adding dioctadecyl dimethyl ammonium chloride, carrying out ultrasonic treatment, adding a penetrant, and carrying out ultrasonic treatment to obtain an antibacterial finishing solution; (2) firstly performing network compounding on mulberry silk and milk protein fibers, and then completing twisting to obtain silk yarns; (3) weaving the silk threads on an air-jet loom to obtain a fabric; (4) immersing the fabric into the antibacterial finishing liquid, and immersing twice and rolling twice; then pre-drying, baking, washing with water, and airing; (5) immersing the fabric into the secondary finishing liquid; soaking twice and rolling twice, then pre-drying, re-baking, washing after baking, and drying to obtain the antibacterial silk broadcloth fabric. According to the invention, through twice finishing, good antibacterial water resistance, high softness and good air permeability of the fabric can be realized.

The trocar protective paste comprises a main fixing paste, a first auxiliary paste is arranged on one side of one end of the main fixing paste and extends to the middle of one end of the main fixing paste, a needle handle gasket is arranged on the portion, corresponding to the middle of one side of the main fixing paste, of one side of the first auxiliary paste, and a second auxiliary paste is arranged on the other side of one end of the main fixing paste. The second auxiliary sticker extends to the side end of one side of one end of the main fixing sticker and is partially overlapped on one face of the first auxiliary sticker, a first sterile release film is attached to the surface of the needle handle liner, the other face of the main fixing sticker, the other face of the first auxiliary sticker and the other face of the second auxiliary sticker are each provided with an adhesive layer, and second sterile release films are attached to the surfaces of the adhesive layers respectively. The trocar has the advantages that the needle handle of the trocar can be isolated from the skin of a patient through the needle handle liner when the trocar is used, the skin of the patient is protected against pressure sores, the unhygienic phenomenon caused by cotton fiber silk threads due to the fact that torn cotton balls are used as liners clinically is improved, the needle handle of the trocar can be fixed through the second auxiliary sticker, and the trocar is convenient to use. And the use is very convenient and safe.

The invention belongs to the technical field of medical materials, and relates to an antibacterial suture line for surgical suture and a preparation method thereof. The preparation method comprises the following steps: dissolving 2-amino-5-acetylpyridine in a hydrobromic acid glacial acetic acid solution, adding a bromine-containing acetic acid solution, and reacting to obtain an intermediate 1; adding the intermediate 1 into tetrahydrofuran, adding triethylamine and acetic anhydride, and reacting to obtain an intermediate 2; adding the intermediate 2 and thiourea into absolute ethyl alcohol to react to obtain an intermediate 3; adding the intermediate 3 and p-nitrobenzaldehyde into absolute methanol, and adding glacial acetic acid to react to obtain an intermediate 4; adding phosphorus oxychloride into N, N-dimethylformamide, and adding the intermediate 4 to react to obtain an intermediate 5; dissolving the intermediate 5 in a mixed solvent, and adding cystamine to react to obtain an antibacterial agent; the medical silk suture line is soaked in dimethyl sulfoxide dissolved with the antibacterial agent, and the medical silk suture line is obtained through ultrasonic treatment, soaking, rinsing and drying. The antibacterial suture line disclosed by the invention has multi-mechanism synergistic enhanced antibacterial performance, an environment response type active release mechanism and excellent interface affinity.

The application belongs to the technical field of medical materials and relates to a bacteriostatic suture for surgical suturing and a preparation method thereof. The preparation method comprises the following steps: 2-amino-5-acetylpyridine is dissolved in a hydrobromic acid glacial acetic acid solution, an acetic acid solution containing bromine is added, and an intermediate 1 is obtained through reaction; the intermediate 1 is added to tetrahydrofuran, triethylamine and acetic anhydride are added, and an intermediate 2 is obtained through reaction; the intermediate 2 and thiourea are added to anhydrous ethanol, and an intermediate 3 is obtained through reaction; the intermediate 3 and p-nitrobenzaldehyde are added to anhydrous methanol, and an intermediate 4 is obtained through reaction; phosphorus oxychloride is added to N,N-dimethylformamide, and the intermediate 4 is added to obtain an intermediate 5 through reaction; the intermediate 5 is dissolved in a mixed solvent, and cystamine is added to obtain an antibacterial agent; and the medical silk suture is immersed in dimethyl sulfoxide containing the antibacterial agent, and is subjected to ultrasonic treatment, soaking, rinsing and drying to obtain the bacteriostatic suture. The bacteriostatic suture has the advantages of multi-mechanism synergistic enhanced bacteriostatic performance, an environment-responsive active release mechanism and excellent interface affinity.

The utility model relates to a snare for local traction exposure of a laparoscope. Comprising a sleeve, a silk thread is contained in the sleeve, a puncture needle used for puncturing the abdominal cavity wall to lead the silk thread out is installed at one end of the silk thread, a through thread hole is formed in the tightening fastener, the other end of the silk thread penetrates through the thread hole of the tightening fastener, and then the end of the silk thread is fixedly connected with the tightening fastener. And a lantern ring required for binding a pulled object in the abdominal cavity is formed. According to the snare for local traction exposure of the laparoscope, the convenience of surgical operation is improved, the operation difficulty of traction exposure in the abdominal cavity is reduced, and potential damage to visceral organs in the abdominal cavity in the traction exposure operation process is reduced or avoided.

The application provides antibacterial and anti-inflammatory silk sutures loaded with natural active ingredients of clove and a preparation method thereof, and belongs to the technical field of silk suture materials. The antibacterial and anti-inflammatory silk suture comprises a silk suture base and an interface layer, a cross-linking anchoring layer, an active ingredient control layer of clove and a hydrophilic protective layer which are sequentially constructed from inside to outside on the surface of the silk suture base. The cross-linking anchoring layer is formed by cross-linking tannic acid on the surface of the silk suture base. Eugenol in the active ingredient control layer of clove is modified by microcapsule embedding, and gallic acid is cross-linked and grafted on the surface of the silk fiber through the cross-linking anchoring layer. The hydrophilic protective layer is a hyaluronic acid modified chitosan film layer. The antibacterial and anti-inflammatory silk suture realizes stable storage, firm loading and time-controllable release of plant active ingredients, and has mechanical properties, biocompatibility and triple synergistic effects of antibacterial, anti-inflammatory and promotion of wound repair.

The utility model provides an intrauterine device placer which comprises a handle, a push rod, a sleeve, a fixing assembly and an intrauterine device. The sleeve and the silk thread are fixed at the same time through the fixing assembly, and the plug on the limiting rod is clamped in the corresponding limiting hole in the sleeve, so that the sleeve is fixed; the button is provided with a threading hole for a silk thread to penetrate through, the button is limited through the lower fixing ring, the fixing ring is blocked at the threading hole when the spring naturally stretches out and draws back, at the moment, the silk thread is clamped between the upper fixing ring and the button, the function of fixing the silk thread is achieved, and when the spring is pressed down, the threading hole is located below the upper fixing ring, and the threading hole and the lower fixing ring are staggered. And the silk thread is not fixed any more, so that the intrauterine device can be placed. The degradation cone of the intrauterine device is inserted into the insertion column of the solid body and is in surface contact with the bottom of the degradation cone, so that the contact area is increased, the stress in the implanting process is reduced and dispersed, and the problem that the degradation cone is broken due to concentrated stress in the product implanting process is solved.

The utility model relates to the field of surgical suture needles and threads, and discloses a needle and thread assembly based on cervical cerclage surgical suture, which comprises a suture line and a suture needle, the cross section of the suture line is circular, the suture line comprises a main line section, and two ends of the main line section are respectively connected with a transition section. The diameter of the transition section is gradually reduced along the extension direction; the large-diameter end of the transition section is connected with the main line section; the small-diameter end of the transition section is connected with the needle threading section; according to the scheme, the main line section serves as a main body of the suture line, the diameter of the main line section is relatively large, the section of the main line section is round, and the problem that due to the fact that the suture line is thin, tension is large, and cutting wounds of the thin line to cervical tissue are likely to happen can be solved, and particularly under the condition that suture and binding retention time is long, the thin line is likely to damage the tissue and cause infection; the needle threading section is used for being connected with a suture needle, the diameter of the needle threading section is relatively small, the needle threading section can more conveniently penetrate into a needle eye of the suture needle, and compared with a thick thread, the thin thread is easier to knot.

A cavity suture channel expanding and guiding device is provided with a handle part and an expanding part used for forming an arc-shaped channel and expanding, and the expanding part and the handle part are integrally connected. A containing cavity used for containing suture lines or linear suture materials is formed in the expansion part. The expansion part is in an arc shape, the central angle of the arc shape is defined as A, and A is larger than or equal to 180 degrees and smaller than or equal to 270 degrees. The cavity suturing channel expanding and guiding device is simple in structure and low in cost, the arc-shaped channel is formed by the cavity suturing channel expanding and guiding device, the arc-shaped channel can be expanded, and therefore thick silk threads or linear suturing materials can penetrate through the arc-shaped channel conveniently.

The invention discloses a preparation method of a tussah silk medical suture with glucose response and healing promotion functions. The preparation method comprises the following steps: synthesizing 3-APBA and HA to prepare HA / 3-APBA; hA / 3-APBA, PVA and insulin are mixed to prepare hydrogel, a phenylboronic acid group is stably combined with a homeopathic glycol structure, so that an insulin drug is loaded in a hydrogel coating, glucose and PVA compete for the phenylboronic acid group in a hyperglycemia environment, the crosslinking degree of the hydrogel is reduced, and finally the hydrogel is degraded to release the drug. The preparation method comprises the following steps: weaving tussah silk to obtain a tussah silk suture line, degumming the tussah silk suture line, carrying out surface modification treatment on the suture line by using DA, and grafting drug-loaded hydrogel on the surface of the tussah silk suture line to form a uniform and stable coating on the surface of the suture line, thereby preparing the glucose-responsive and healing-promoting medical suture line.

The utility model discloses a disposable blood vessel ligator with a thread, which comprises a silk thread, a hollow bent metal piece and an operating rod, the hollow bent metal piece is fixedly connected to the front end of the operating rod, the silk thread is fixedly clamped and inserted in the front end of the hollow bent metal piece, the operating rod is arranged in a conical shape, the length of the operating rod is 169.33 mm, and the operating rod is connected with the hollow bent metal piece. The distance between the front end of the operating rod and the front end of the hollow bent metal piece is 28.17 mm, the hollow bent metal piece is arranged in an arc shape, the silk thread is an absorbable silk thread, and anti-skid lines are arranged on the outer wall of the operating rod. The ligator is convenient, accurate and time-saving to use by a nurse, an operation table top is clean, tidy, fresh and clear at a glance, the ligator is more favorable for accelerating an operation process, the ligator can be easily pulled and separated to ligature blood vessels by utilizing the principle that the absorbable section is used for installing a suture broken end, and the ligator can be divided into various types such as 0 #, 1 #, 4 # and the like as traditional suture types, so that the ligator is convenient to use. And great convenience is brought to surgeons and nurses.

The utility model provides a small incision skin traction hook which solves the problem that a special instrument used for a small incision of an ophthalmologic operation is lacked at present. A small incision skin traction hook is formed by sequentially connecting a ring part, a connecting part and a traction part, the front end of the traction part is provided with two hook claws bent towards the lower left, the traction hook is pulled through a silk thread fixed to the ring part, and the silk thread is fixed through hemostatic forceps or a fixing part.

The invention provides a rat periodontitis model and a construction method and application thereof, on the basis of ligating a tooth neck of a first molar of an SD (Sprague Dawley) rat by a traditional silk thread, light-cured composite resin is bonded in the occlusion direction of the silk thread to manufacture an appearance high point, the silk thread is fixed, a tartar is simulated, and an occlusion high point is formed; meanwhile, the gingival sulcus of the first molar of the upper jaw is cooperatively inoculated with human periodontitis pathogenic bacteria, the implementation method is simple, the repeatability is good, the stability is high, the silk thread loosening rate is reduced to 3.13% when modeling is carried out for 28 days, the loosening rate is greatly reduced compared with 34.38% of a traditional silk thread ligation model, subsequent experiment steps are simplified, lasting gingivitis cell infiltration is caused, and the method is suitable for popularization and application. The number of inflammatory cells is 63.27 + / -7.07% when modeling is carried out for 28 days, experimental periodontitis models of different degrees can be constructed within 2-4 weeks, compared with a traditional model, forming is faster, the model is closer to periodontitis clinical characteristics, and a model basis is provided for researching intervention strategies of different stages.

The invention discloses a flat type multi-fiber-thread dental floss at least comprising a first silk thread body and a second silk thread body, a second wire body; and a third thread body; wherein the first silk thread body, the second silk thread body and the third silk thread body are of a flat structure formed by interweaving the first silk thread body, the second silk thread body and the third silk thread body together along the same plane, and meanwhile, the invention further discloses a tooth cleaning device applying the flat type multi-fiber-thread dental floss. The plurality of silk thread bodies are mutually interwoven together along the same plane to form the flat structure, so that the whole surface area of the flat type multi-fiber-thread dental floss is larger than that of a traditional cylindrical dental floss, the contact with the tooth surface is closer to surface contact, the friction area is increased, and the friction resistance of the dental floss is improved. And residues or dental plaque on teeth and in slits between the teeth can be better cleaned, so that the teeth are better protected. The contact area is increased, so that the local pressure between the dental floss and the teeth can be reduced, the teeth are prevented from being worn, and the teeth are better protected. Compared with a traditional flat dental floss with a single fiber yarn, due to the fact that the concave portions and the convex portions which are formed in an interwoven mode are formed, residues on the surfaces of teeth can be better cleaned and scraped away through the concave portions and the convex portions.