60 results about "Skin sutures" patented technology

A medical device for installing sutures to close an incision in tissue or human skin is disclosed. The suturing device may provide first and second arcuate needles. Once properly positioned, the first and second arcuate needles are driven through the sub-dermal layer, or alternatively through a superficial surface, of two sections of skin to be joined. This is done in arcuate fashion and at identical and symmetrical rates of angular displacement. During the driving or retraction process of the first and second arcuate needles, a suture is positioned within both the first and second sections of skin and transformed from a planar or a multi-planar serpentine orientation to a helical orientation. The resulting suturing process is thus much faster than conventional or manual suturing and results in superior wound approximation / alignment that will lead to decreased scarring compared to prior art devices.

The present invention discloses a skin wound stapler, which is characterized in that the both sides of a skin wound (1) are provided with strip-shaped base cloth (2), the base cloth is connected with a plurality of locking devices, each locking device is composed of a support strip (4), latches (5) and a tension belt (3), the upper surface of the support strip is provided with latches (5) at intervals, the lower surface of the support strip is connected with the base cloth, the latches consist of upper latches (9) and lower latches (8), the upper surfaces of the lower latches and the lower surfaces of the upper latches are respectively provided with convex slots and concave slots which are matched mutually, the tension belt penetrates the latches at the both sides of the wound, and the tension belt is regulated and fixed by the locking function of the upper latches and the lower latches, so as to provide the proper suturing force to the wound, further to constitute the skin stapler. The invention is used for suturing the linear or curved wounds, which can effectively shorten the surgical suture time, facilitate the nursing of the post-operative wounds, provide the smooth degree of the wound healing and reduce the scar residues.

The invention discloses a non-removing antibacterial skin suture for cosmetic surgery. The suture comprises a suture body. The suture is characterized in that: the suture body is made of human absorbable material; and when the suture body is made, a medicament with an inflammation diminishing effect and / or a medicament with a pain easing effect are added, and the added medicament is 0.01 to 10 percent based on the weight of the suture body. The suture for suturing the wound eliminates infection, avoids frequently changing the medicament, can reduce suture knot response and reduce scars, and can be automatically absorbed in tissues; the suture can promote wound healing, prevent infection and reduce scars; a large amount of clinical application proves that the suture has a satisfying effect, reduces the subsequent visit times of a patient, and avoids the pain of removing the suture; and the suture has a sterilization effect, realizes sterilization in an incision, and has a better antibacterial effect.

The invention discloses a skin suturing device allowing fine adjustment, and belongs to the technical field of medical apparatus and instruments. The skin suturing device includes basic fabrics sticking to a skin, and locking devices which are arranged in the length directions of the basic fabrics at two sides; each locking device includes a fixing base arranged on a fabric at one side, a fixing clamping base arranged on a fabric at the other side, an adjustable pull rod for connecting the fixing base and the fixing clamping base, and a rotary nut for locking the adjustable pull rod, wherein one end of the adjustable pull rod is arranged on the fixing base, and the other end of the adjustable pull rod passes through the fixing clamping base and is detachably connected to the rotary nut; and the locking devices can achieve continuous fine adjustment of a wound suturing force through the rotary nuts and the adjustable pull rods. The skin suturing device can achieve continuous fine adjustment of the wound suturing force, can effectively avoid the problem that wound healing is seriously impacted by over-tightening and uneven forces acted on different parts of an nonlinear wound during suturing, and can shorten the time of wound healing.

The invention discloses a novel making method of a skinned specimen of fish. The method comprises steps as follows: (1), the fish is anesthetized and killed, and mucus is cleaned; (2), dimensions of the fish are measured and photographed; (3), the posture of a fish body is set, and a skeleton diagram is drawn; (4), cutting as well as peeling and carving of prosthesis is performed; (5), a proper notch is selected and skin is peeled off; (6), the fish skin is subjected to degreasing and preservative treatment; (7), the prosthesis is smeared with dextrin, skin suture is performed, and natural drying is performed after shaping; (8), repair and inlaying of ocular prosthesis are performed; (9), water-based acrylic acid modified polyurethane dispersion is adopted for coloring, and wood lacquer issprayed after coloring. The method has the advantages as follows: preparation is simple, and cost is low; fish postures can be adjusted according to requirements in the preparation process; a morphological structure is measured scientifically and systematically; the prepared fish skinned specimen is environmentally friendly, non-toxic, resistant to high temperature, acid and alkali, anti-aging and easy to store; the structure is complete and attractive, detailed parts are vivid and lifelike, and the specimen is widely applied to teaching, scientific research, collection and ornamentation.

The invention discloses an absorbable skin suturing nail. The material of the absorbable skin suturing nail is a random copolymer of L-lactide and glycolide, wherein the molar ratio of L-lactide in the random copolymer is 50-70%, and the molar content of glycolide is 30-50%. In the manner, the absorbable skin suturing nail disclosed by the invention is high in mechanical strength, has certain mechanical strength retention within three weeks, is disintegrated after four weeks, and does not affect tissue healing. The absorbable skin suturing nail has good size stability during in-vivo mechanical strength retention. The random copolymer has good melt rheological properties, has excellent processing performance, and is convenient to be processed into the absorbable skin suturing nail.

The invention provides an absorbable magnesium alloy skin suture nail and a preparing method thereof. The appearance of the skin suture nail is similar to a U shape, and the skin suture nail is prepared through smelting, casting, extrusion, wiredrawing, brake forming, heat treatment, acid pickling, surface fluoridation treatment and washing. The absorbable magnesium alloy skin suture nail and thepreparing method thereof have the advantages that the magnesium alloy skin suture nail has good biocompatibility and biodegradablity, high mechanical strength and good ductility and toughness, a transitional design of a nail shoulder can effectively reduce stress concentration caused by large deformation when the magnesium alloy skin suture nail is closed, and meanwhile effective adjustment of thedegrading efficiency can be achieved through the surface fluoridation treatment; the magnesium alloy skin suture nail has clamping performance and ductility and toughness, the service life of the absorbable magnesium alloy skin suture nail is prolonged, and thus the skin suture nail can meet the requirement of clinic use, automatically shed when used for epidermis suture and achieve complete degrading and absorption when used for subcutaneous suture.

The invention belongs to the field of medical devices, and specifically relates to a drug-coated titanium nail with chitosan gelatin as a carrier, which is characterized in that: the thickness of the coating on the titanium nail is 0.001-10 mm; Titanium nails are used for open and endoscopic anastomotic staplers, skin sutures, linear staplers, and clip applicators. The diameter of the titanium nails is 0.1-5.0. The titanium nails are made of TA1, TA2 and the metal nails are made of 316LVM stainless steel, self-reinforced poly-L A coating of lactide SR-PLLA12 nails and self-reinforced poly-L-polyglycolide SR-PGA nails, the chitosan gelatin titanium nails can perform chitosan for human implants, artificial organs, catheters Sugar gelatin coating treatment or coating treatment using chitosan gelatin as drug controlled release carrier, the method is simple and easy, the prepared chitosan gelatin coated titanium nail meets the clinical application requirements, chitosan gelatin coated titanium nail can It promotes tissue healing, has good stability, is not easy to wash off, is safe to use, is suitable for large-scale industrial production, and is simple to operate and low in cost.

The invention provides a Velcro skin stapler without a needle or a cord, belonging to surgical instruments. The Velcro skin stapler comprises a fixing plate, an adjoining plate matched to the fixing plate, a locking plate matched to the fixing plate and the adjoining plate, an elastic connecting plate with two edges embedded into the edges of the adjoining plate and the locking plate, and rigid fixing blocks uniformly embedded into the adjoining edge parts of the fixing plate and the adjoining plate in an ordered and spacing manner; the fixing plate is composed of fixing plate double-sided rubberized fabric and a rough-surface Velcro through adhesion, the adjoining plate is composed of adjoining plate double-sided rubberized fabric and adjoining plate non-woven fabric through adhesion; the locking plate is composed of a hook-side Velcro and locking plate non-woven fabric through compounding; the elastic connecting plate is composed of an adjoining plate connecting bar, a locking plate connecting bar and an elastic connecting bar; and the rigid fixing blocks comprise locking plate rigid fixing blocks and adjoining plate rigid fixing blocks. Compared with the prior art, the surgical needle and the surgical cord are eliminated, the healing of the skin wound is facilitated, the wound heal time is shortened by 1-2 days, scars left after the wound healing are obviously alleviated, and the Velcro skin stapler is easy to manufacture and use.

The invention belongs to the field of medical devices, and specifically relates to a drug-coated titanium nail with calcium alginate fiber as a carrier. Human implants, artificial organs and catheters can be coated with calcium alginate fibers or coated with calcium alginate fibers as drug-controlled release carriers. The titanium nails are used for open and laparoscopic anastomotic staplers , skin suture, linear stapler, clip applier, titanium nails with a diameter of 0.1-0.5, titanium nails made of TA1, TA2 and metal nails made of 316LVM stainless steel, self-reinforced poly-L-lactide SR-PLLAl2 nails and self-reinforced poly The coating of L-polyglycolide SR-PGA nails can effectively improve the use of surgical stomach, lung and other tissues and digestive tract surgical tissues, reduce the incidence of complications of patients, improve the survival rate and quality of life of patients, and the process is simple. The cost is low, the coating of the titanium nail is uniform, and the loading capacity of the drug and the controlled release carrier is also greatly increased.

The invention discloses a pair of skin suturing pliers, which comprises clamping handles, first pliers arms and second pliers arms, wherein one end of each of the two groups of clamping handles is hinged and connected; the first pliers arms and the second pliers arms are independently rigid extension segments of two groups of clamping handles on the other side of a hinging point, and rigid extension segments of the free ends of two groups of clamping handles; the free ends of the first pliers arms can form clamping pliers heads; two groups of first pliers arms are independently provided with aneedle entering guide hole and a needle leaving guide hole, which are used for conventional suturing; the needle entering guide hole and the needle leaving guide hole are through in an alignment wayunder a state that the first pliers arms are clamped; the inner side of each second pliers arm is a clamping surface; the upper side surfaces of one group of second pliers arms are convexly provided with two groups of needle guiding seats used for beatification suturing; and each needle guiding seat is provided with a needle guiding hole used for a suturing needle to pass. According to the pair ofskin suturing pliers, conventional skin suturing and intracutaneous beatification suturing can be realized, a surgeon can independently finish a suturing and thread shearing operation and the accurate needling entering of intracutaneous suturing during operation wound suturing, suturing time is greatly shortened, and suturing quality is improved.

The invention discloses a preparation method of collagen fibers, belonging to the tissue engineering and regenerative medicine fields. According to the preparation method, a collagen solution is prepared from animal collagen through the dissolving of ionic liquid and is coagulated and assembled into three strands of spiral-structure collagen fibers by a wet spinning device in an organic coagulating bath, the collagen fibers can be rolled without being broken after being spun through a spinning device, and continuous and non-adhesive collagen yarns are obtained. The collagen fibers prepared byvirtue of the preparation method are not subjected to any chemical cross-linking treatment and are I-type collagen fibers, collagen has good nutrition and restoration functions and is capable of effectively restoring damaged cells of a wound in a decomposition absorption process after being implanted into a human body, and tissues at the wound can be restored to a pre-operation state as far as possible. The collagen fibers can be applied to skin suture or plastic surgery wound flatting and scars are not remained.

The invention discloses a skin expander and an application method thereof. The skin expander structurally comprises a double-reverse traction device, suture fixation devices, steel cables and hooks, wherein the suture fixation devices arranged symmetrically are fixedly stitched to skin on both sides of a wound; the steel cables are mounted in a sleeve mode onto the suture fixation devices; both sides of the double-reverse traction device are connected with the steel cables symmetrically arranged. The double-reverse traction device enables the two arc steel cables symmetrically arranged to tendto move close each other, namely, to produce double-reverse traction force, which indirectly draw skin on both sides of the wound to gradually stretch towards the central line, and then symmetric skin flaps can slowly move close to each other and finally close the wound.

The invention provides a zipper-type skin suture apparatus. The zipper-type skin suture apparatus comprises a zipper device and several skin bonding patches; the zipper device comprises a zipper, a zipper pull, two zipper teeth, a lower stop part, two upper stop parts, two antibacterial lining fibers, two elastic fiber belts, two pull wires and two pull wire fiber sheaths. After the elastic fiberbelts are closed in the suture apparatus, certain uniform pull force can be generated, and healing of an incision is promoted; through the good flexibility of the zipper device and the elastic fibers,the suture apparatus can be suitable for incisions in different shapes; the antibacterial lining fiber strips can reduce the occurrence of infection of the incision after an operation. By means of the zipper-type skin suture apparatus, the suture time of the operation can be shortened, a patient is prevented from removing a suture wire, the formation of scars of the incision is reduced, and meanwhile, the apparatus is easy to operate and has a reliable effect.

The invention discloses an absorbable skin suture nail which is made of biodegradable materials. The absorbable skin suture nail comprises two nail legs, a nail crown and two barbs, wherein the nail legs are arranged side by side at intervals with each other, the nail crown is connected between the nail legs, and the barbs are respectively arranged on the nail legs in a manner of protruding to each other. By the above mode, sutured tissue can be prevented from slipping, stability of operative wound suture can be improved, good biocompatibility of the absorbable skin suture nail can be achieved, inflammatory responses and corresponding post-operation maintenance cost during would healing are reduced, the absorbable skin suture nail can be absorbed by a human body, trouble of nail removal is omitted, and the pain of a patient is relieved.

The invention relates to the technical field of medical apparatus and instruments, in particular to an electric skin suturing instrument. The electric skin suturing instrument comprises a base plate,a motor, a retarding mechanism, a suture driving mechanism, a nail storage box component, a nail storage box fixing component, a battery, a battery fixing component, a switch and a shell, the batteryprovides power supply to the motor, the motor outputs rotary motion, the retarding mechanism converts high-speed rotation of the motor into the low-speed rotation of a driving link, the suture drivingmechanism converts low-speed rotation of the driving link into reciprocating linear motion of a blade, and the reciprocating linear motion of the blade acts on suturing nails in the nail storage boxcomponent and enables the suturing nails to deform to complete suturing. The electric skin suturing instrument has the advantages that an automatic skin suturing function is realized, skin suturing efficiency is improved, repeated usage of the instrument is realized by modular design of the nail storage box component, occurrences of nail blockage can be reduced effectively by the designed scheme,a wireless design is adopted, and the electric skin suturing instrument is compact in integral structure.

The invention discloses a single-hole multichannel rotatable operating device of a laparoscope. The single-hole multichannel rotatable operating device comprises an expansion cylinder and is characterized in that a surgery channel is formed in the middle of the expansion cylinder, the front portion of the expansion cylinder is small, the rear portion of the expansion cylinder is large, the external circle of the expansion cylinder is in arc-shaped transition from front to rear, the front end of the external circle of the expansion cylinder is provided with clamping lugs used for preventing the retreating of the expansion cylinder, and the upper end of the external circle of the expansion cylinder is provided with a fixing lug which is sewn with the skin of a patient to fix expansion cylinder to the patient; the top of the expansion cylinder is provided with an inner cover which can rotate around the peripheral direction of the central axis of the expansion cylinder in a reciprocating manner, and the inner cover is provided with a plurality of puncture bayonets communicated with the surgery channel; the lateral wall of the expansion cylinder is provided with an air inlet and an air outlet. The single-hole multichannel rotatable operating device has the advantages that the rotation of a surgical tool is facilitated so as to perform surgery on an affected part from different angles, and the device is simple and convenient to operate, capable of avoiding secondary injury of the patient and capable of guaranteeing fast recovery; the passing ability and sealing performance of the puncture bayonets can be increased favorably by a sealing component, and surgery operating efficiency is increased favorably.

The invention provides a chest cavity drainage tube with a side wing fixing sheet. The two sides of a tube body of the drainage tube are provided with symmetrical fixing sheets with tying holes. When being used, after the chest cavity drainage tube is arranged in the chest cavity, the side wing fixing sheet is tightly attached to the chest wall, and a skin suture penetrates through the tying holes of the fixing sheets to be knotted and fixed, so that the chest cavity drainage tube is fixed more firmly and is prevented from slipping, and negative effects are avoided.

The invention relates to the technical field of medical auxiliary devices, in particular to a novel occlusion type suture-free wound patch. The novel occlusion type suture-free wound patch comprises a left wound patch body and a right wound patch body, ends of the two sides of the left wound patch body and the right wound patch body are connected through an upper connecting belt and a lower connecting belt, a plurality of occlusion buckle assemblies are evenly distributed at a port of a side face of the left wound patch body, and clamping groove buckle assemblies corresponding to the occlusion buckle assemblies are arranged at a port of a side face of the right wound patch body. The left wound patch body and the right wound patch body are attached to two sides of a wound of a patient respectively, when the wound needs to be sutured, a medical worker controls the occlusion buckle assemblies on the left wound patch to be buckled on the clamping groove buckle assemblies, closing of the skin wound below the left wound patch body and the right wound patch body, suture-free wound is closed, and problems that an existing skin suture method causes secondary trauma to the skin, infection and suture allergy are likely to happen, new scars are left after healing, and pain and inconvenience are caused during suture removal or nail removal.

The invention discloses a body surface suturing auxiliary unit, and belongs to the technical field of medical supplies. The body surface suturing auxiliary unit is characterized by comprising a moduleA (1) and a module B (2) which are separately arranged, adhesives are arranged on the bottom surfaces of the module A (1) and the module B (2), the the module A (1) and the module B (2) are adhered to the skin of a patient through the adhesives, and the module A (1) and the module B (2) are respectively provided with a thread passage (4). The invention provides a novel skin incision suturing method which can be used for noninvasively closing a skin incision while protecting the skin. The novel skin incision suturing method is simple and convenient to operate, the suturing efficiency of doctors is improved, the pain of patients suffering traditional skin suturing is eliminated, the medical cost is saved, multiple advantages are achieved compared with the existing suturing instrument, and the social significance and application value are great. Non-invasive incision suturing is achieved, the requirements of doctors are met, the suturing difficulty is greatly reduced, the operation efficiency is greatly improved, and the wound infection probability is reduced; and the requirements of patients are met, the skin suture pain is eliminated, centipede scars of pinholes are eliminated, theincision healing time is shortened, and the problems of low incision involution accuracy, troublesome suture removal and the like are solved.

The invention discloses a reusable and intensity-adjustable medical skin stitcher. The reusable and intensity-adjustable medical skin stitcher comprises double sticky tapes, a first base, a second base, a rack, a locking fastener, a tensioner and a fine adjustment nut, wherein the locking fastener has a locked state and an unlocked state, when the locking fastener is in the locked state, the firstbase and the base can be close to each other, and when the locking fastener is in the unlocked state, the first base and the second base can be conveniently disconnected. The reusable and intensity-adjustable medical skin stitcher achieves unlocked separation of the first base and the second base as well as fine adjustment of the fine adjustment nut by changing the double sticky tapes to furtherachieve reusability and force adjustability and controllability, thereby solving the problem that medical skin stitchers in the prior art cannot be disconnected and are non-reusable after being closedonce.

The invention relates to the field of medical apparatuses and instruments, in particular to a disposable skin suturing instrument. The disposable skin suturing instrument comprises a shell body, a handle and a nail storage box, wherein the handle is connected with the rear end of the nail storage box, and the nail storage box is fixedly installed on the shell body. The disposable skin suturing instrument has the advantages that the machining process of parts is simple, quality is easy to control, nail feeding is smooth, a nail retreating device can timely push out suturing nails through which suturing forming is finished, the phenomenon of nail clamping is avoided, and the surgical skin suturing is easy, convenient and smooth.

A scald-preventing silicon rubber case for a medical retractor is characterized in that the silicon rubber case is made of medical silicon rubber raw materials, the surface of the silicon rubber case adopts the design of a lattice, and the silicon rubber case is shaped like a square or an arc or a claw or a hook. The scald-preventing silicon rubber case can be applied to thyroid retractors, skin retractors, muscle retractors, and abdominal retractor sets. According to the scald-preventing silicon rubber case for the medical retractor, scalds of skin and visceral organs caused by the contact between high-temperature cutting equipment such as an electric knife and an electric hook and the retractor in an operation can be effectively prevented, subsidiary-injuries of the skin and the visceral organs in the operation are reduced, operative complications are further reduced, and the attractiveness of skin suture after the operation is enhanced. The scald-preventing silicon rubber case for the medical retractor is made of the medical silicon rubber raw materials, so that the features of innocuity, odorlessness, high temperature and low temperature resistance, chemical reagent resistance, repeated high temperature and pressure sterilization and the like are achieved, and the scald-preventing silicon rubber case for the medical retractor is durable in use and harmless to human bodies.

The invention discloses a novel skin stitching instrument, and relates to the technical field of skin stitching instruments, the novel skin stitching instrument comprises a shell, the left side of the lower side surface of the shell is provided with a groove, the front side and the rear side of the inner wall of the groove are jointly and rotatably connected with a threaded rod, the rod wall of the threaded rod is in threaded connection with a moving block, and the upper side of the inner wall of the groove is provided with a sliding groove; the inner wall of the sliding groove is slidably connected with the upper side surface of a moving block through a sliding block, the front side surface of the moving block on the rear side is fixedly connected with a needle inserting block, the front side surface of the needle inserting block is fixedly connected with a needle head, the left side surface of the needle head is provided with a wire inlet hole, and the rear side surface of the moving block on the front side is fixedly connected with a pressing shell. In the wound suturing process, secondary damage to a wound caused by a traditional suturing nail is reduced, meanwhile, the difficulty that an operator uses a suturing line for suturing is facilitated, and the wound is sutured more closely.

The invention discloses a medical skin stitching instrument. The medical skin stitching instrument comprises bonding mechanisms, wherein the two bonding mechanisms are symmetrically arranged front andback; a connecting mechanism is arranged at the upper side of each bonding mechanism; a movable mechanism is arranged between the connecting mechanisms on the bonding mechanisms; an adjusting mechanism is arranged at the upper end of the movable mechanism; a stitching mechanism is arranged at the front end of the adjusting mechanism; the connecting mechanisms and the movable mechanism are connected with the bonding mechanisms; the movable mechanism is connected with the adjusting mechanism; and the adjusting mechanism is connected with the stitching mechanism. With the adoption of the manner,the medical skin stitching instrument provided by the invention is convenient for aligning an operation opening through the bonding mechanisms and the connecting mechanisms, and manual operation is avoided; a hinging seat at the lower end of a second electric retractable rod of the stitching mechanism is fixed with a connecting plate so that an auxiliary supporting mechanism and a threading mechanism are arranged in a balanced manner; and after a supporting disc of the auxiliary supporting mechanism abuts against skin, the lower end of a framework is leveled with the skin, the threading depthis kept consistent and the stitching quality is improved.

The invention discloses a medical instrument, in particular a medical skin suturing needle, which comprises a needle tip, a needle body and a needle tail, and is characterized in that: the edge of a small hole of the needle tail is provided with an opening; and a unidirectional cover opened inwards is arranged on the opening. The medical skin suturing needle is simple in structure, convenient to use and easy to thread, ensures that a suture line cannot fall off and tissue strain is avoided during suture, effectively reduces the pain of the patient and improves operation efficiency.

The invention relates to the technical field of medical instruments, in particular to a novel electric skin suturing instrument. The novel electric skin suturing instrument comprises a main machine assembly, a shell and a nail bin suturing assembly, wherein the shell comprises a first shell body and a second shell body, and the main machine assembly is arranged in a cavity formed by the first shell body and the second shell body. The novel electric skin suturing instrument is characterized in that the lower portion of the shell is provided with the nail bin suturing assembly capable of being rapidly disassembled, the bottom of the shell is provided with a clamping groove, the nail bin suturing assembly is provided with a buckle, the nail bin suturing assembly is installed on the lower portion of the shell through cooperation between the buckle and the clamping groove in the shell, and the main machine assembly is used for driving the nail bin suturing assembly to suture the skin. The novel electric skin suturing instrument is simple and compact in structure and convenient to operate.

The invention discloses a skin suture retainer convenient for fixing a drainage tube, and a skin wound suture retainer. The skin suture retainer comprises a plurality of pieces of isolation paper which are connected together in sequence and can be prevented from being adhered to the skin; a block-shaped adhesive tape A and a block-shaped adhesive tape B which can be used for being pasted to the skin on the two sides of a wound needing to be sutured respectively are pasted to the isolation paper, a first fixing piece is arranged on the adhesive tape A, a second fixing piece is arranged on the adhesive tape B, a fixing block is arranged on the first fixing piece, and a buckling device is arranged on the second fixing piece in the length direction of the adhesive tape B; and a pulling and buckling device capable of being buckled on the buckling device (7) in an overturning manner is hinged to the fixing block, and a fixing mechanism capable of being used for fixing the drainage tube is arranged on the pulling and buckling device. The skin suture retainer has the advantages that a drainage tube can be fixed while a wound is sutured without using a needle and a suture, the use is simpleand convenient, scars can be reduced, and the infection risk is reduced.