41 results about "Pointed tooth" patented technology

Described are surgical clamping devices, which may include a pair of shaft members, each of which may include a jaw member extending from a proximal end of the shaft member and a finger grip extending from an opposing distal end of the shaft member. In addition, each jaw member may include a tip means for holding and clamping a patient's skin along an edge of a wound. The tip means may include at least two pointed teeth that are angled inward and downward from the shaft member. The surgical clamping device may be removed and applied for multiple stages of Mohs micrographic surgery.

The invention provides an adjustable lower die for a bending machine, which relates to the technical field of metal plate plastic processing and forming, and comprises a die outer shell, a module spacing adjusting mechanism, two groups of adjusting module single blocks, a first adjusting module, a second adjusting module, a third adjusting module, a fourth adjusting module and a fourth adjusting module, the electric telescopic rod is used for controlling the toothed plate to ascend and descend so that the pointed tooth block and the tooth groove can be clamped in a self-adaptive mode, independent rigid locking is provided to protect the transmission lead screw from being laterally pressed and abraded, moving fine adjustment is achieved through the hole diameter difference between the round rod and the through hole, accumulated tolerance is thoroughly eliminated, and the bending precision is ensured. And meanwhile, the air cylinder drives the trapezoidal block to jack so that the bottom height can be flexibly adjusted to adapt to plates with different thicknesses, the flexible supporting mechanism is introduced between the supporting table and the lower die cushion block, vertical downward pressing impact is effectively absorbed and buffered through deformation of the elastic piece and rotation of the damping rod, and therefore the overall service life of the die is greatly prolonged, and the system safety and stability are improved.

The present invention discloses a facial absorbable soft tissue lifting device, comprising a thin belt body and a wide belt body, wherein the wide belt body is integrally formed at the end of the thin belt body, and a plurality of fixing blocks corresponding to sharp teeth are arranged at the bottom of the wide belt body, wherein the fixing blocks are threadedly mounted on a connecting column, and the sharp teeth are fixedly mounted on the top of the wide belt body through the connecting column and the fixing blocks; the present invention adopts the design of the fixing blocks, the connecting column and the mounting hole structure, so that when the number of sharp teeth needs to be increased, the annular block is taken out from the wide belt body, and the connecting column at the bottom of the sharp teeth to be increased is inserted into the mounting hole, and the fixing block is threadedly mounted in the connecting column, so that the sharp teeth can be fixedly mounted on the wide belt body, thereby the number of sharp teeth can be actively increased according to the needs, so that the implanted sharp teeth can play a role in lifting tissues in a large range in the deep layer of facial soft tissue, and the problem of facial sagging can be well solved.

The olivary nucleus scissors comprise a first scissor handle and a second scissor handle which are hinged to each other, the head portion of the first scissor handle is a shearing portion with a blade, the head portion of the second scissor handle is an annular limiting portion used for being arranged on an olivary nucleus in a sleeved mode, and sharp teeth are arranged on the inner ring of the annular limiting portion. Steps are arranged between the sharp teeth and the side face, away from the shearing part, of the annular limiting part, and the sharp teeth with the thickness smaller than that of the annular limiting part can be closer to the shearing part through the steps. According to the utility model, the step is arranged, so that when the olivary nucleus is sheared, the stress point of the sharp teeth on the olivary nucleus is closer to the shearing part, the shearing is more stable, and the olivary nucleus is not easy to pop out during shearing.

The utility model discloses a spine endoscope minimally invasive surgery embracing type spike tooth bone grasping forceps, which comprises a first clamping jaw, a second clamping jaw, a fixing rod and a handle, the first clamping jaw is rotatably connected with the second clamping jaw, the second clamping jaw is fixedly arranged at one end of the fixing rod, the handle is arranged at the other end of the fixing rod, and the handle is fixedly connected with the first clamping jaw. The handle is used for controlling the rotating angle of the first clamping jaw relative to the second clamping jaw. According to the embracing type spike tooth bone grasping forceps for the spine endoscope minimally invasive surgery, the opening angle is increased through the first clamping jaw and the second clamping jaw, meanwhile, when a broken bone is grasped, the second clamping jaw is matched with the arched first clamping jaw, the first sharp teeth and the second sharp teeth can stretch into the side face of the broken bone to embrace the bone block, and the broken bone is convenient to grasp.

The utility model discloses a cutting saw blade special for a PVC integrated wallboard, and relates to the field of plastic cutting. The cutting saw blade special for the PVC integrated wallboard comprises a saw blade body and tool bits which are integrally formed and arranged on the outer ring of the saw blade body in an annular arrangement mode, the front tool face of each tool bit is in an arc shape, and the cutting edge inclination angle lambda of each front tool face is 32 degrees; the teeth of the tool bit are sharp and flat teeth, the sharp and flat teeth comprise sharp teeth and flat teeth, and the sharp teeth and the flat teeth are distributed in a staggered mode. According to the cutting saw blade special for the PVC integrated wallboard, the sharpness of the tooth tops of the tool bits is greatly improved through the concave-surface arc teeth, the pressure of the tooth tops of the tool bits on the surface of the PVC integrated wallboard is remarkably reduced during cutting, meanwhile, the sharp teeth can form two pieces of cuttings, the flat teeth can also form four pieces of cuttings, and therefore the pressure of the tooth tops of the tool bits on the surface of the PVC integrated wallboard is further reduced; therefore, edge breakage and corner falling are avoided or obviously reduced, and tearing and breaking are avoided.

The utility model discloses a tooth tip chain transmission mechanism with a material pressing wheel. And a pressing wheel mechanism is arranged on a chain bracket of the tooth tip chain transmission mechanism. The material pressing wheel mechanism comprises a material pressing frame and a material pressing wheel arranged on the material pressing frame. The material pressing frame is arranged on the chain bracket through a spring guide column mechanism. The wheel face of the material pressing wheel is provided with tooth tip grooves allowing sharp teeth of the tooth tip chain to penetrate through. And the wheel surface of the pressing wheel is made of an elastic material. Sheet materials conveyed on the tooth tip chain are clamped through the pressing wheel, the situation that the sheet materials are pulled and fall off due to the gravity is avoided, and friction force caused by clamping can be reduced through friction rolling of the pressing wheel when the pressing wheel clamps the sheet materials through the spring and elastic materials of the pressing wheel.

The invention relates to an anastomosis clip (100; 200), the anastomosis clip (100; 200) for connecting the first vessel to the side wall of the second vessel. The clip comprises: a double tines fork (2) having a fork base (3) and two tines (4, 5) extending from the fork base (3) to a tapered end portion (6) with a sharp tip (7); a ring (1); and a clamping structure (10; 60), the clamping structure (10; 60) grips the fork towards the ring. The ring and the fork are movable relative to each other from an open position to a closed position. In the closed position, the tines extend along the ring plane. For each of the tines, the ring has an associated bearing region (21, 22). In the closed position, the tapered portion of the tines is supported by its associated support region such that the sharp tips are occluded by the associated support region.

The utility model relates to the technical field of channel obstacle clearing, in particular to a novel channel obstacle clearing bucket which comprises a rake tooth body, two connecting ear pieces used for connection are arranged at the top of the rake tooth body, an upper bucket ear sleeve and a lower bucket ear sleeve are arranged on the surfaces of the two connecting ear pieces, reinforcing sharp teeth are arranged at the front end of the rake tooth body, and the upper bucket ear sleeve and the lower bucket ear sleeve are connected through the reinforcing sharp teeth. A check block and a reinforcing cross rod are arranged at the tooth seam of the rake tooth body, and the arc-shaped slender rod is arranged on the reinforcing cross rod. According to the novel channel obstacle clearing bucket, through the hollowed-out arrangement of the rake tooth bodies, water can directly flow out when sundries are dug out, trouble and labor are saved, energy consumption of an excavator is effectively reduced, meanwhile, the arc-shaped thin rods are arranged in a matched mode, the multiple rods and the multiple rake tooth-shaped structures of the arc-shaped thin rods are used for combined action, and the working efficiency is improved. Impurities such as waste fishing nets, oyster columns and oyster rows which hinder engineering construction in a channel are hooked and cleared out of a water body, the obstacle clearing efficiency is greatly improved, and the operation period is shortened.

1. The name of this design product: sharp-toothed cutter disc. 2. Purpose of this design product: This design product is used for grinding coffee beans. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the key points of the design: Design 1 Stereoscopic Drawing 1. 5. Designate Design 1 as the base design.

The present invention belongs to the field of cable recovery, in particular to a cable recovery device for a single-core cable, comprising a rotating wheel assembly provided with sharp teeth, wherein the rotating wheel assembly is formed with a cable passing channel, and tooth holes corresponding to each other in the vertical direction are formed on the upper and lower sides of the cable when the cable passes through the rotating wheel assembly, and after the holes are opened, the cable is transmitted between an upper cutting wheel and a lower cutting wheel with adjustable spacing and opposite rotation directions, and the upper cutting wheel and the lower cutting wheel cut the sheath layer on the upper and lower sides of the cable along the midline position, and the cut cable is divided into a left sheath, a cable core and a right sheath, and the left sheath and the right sheath are tensioned by a transmission roller assembly at the rear, and a shearing assembly is arranged at the transmission roller assembly, and a sliding member capable of reciprocating sliding is arranged on the shearing assembly, and a clamping member and a shearing member are arranged on the sliding member, and the present application can increase the service life of the cutting wheel assembly and the service life of the segmentation mechanism to reduce the maintenance interval.

A serrated panel for a wind turbine rotor blade, comprising: • at least two teeth, each having a tip, a base, a length measured in a chordwise direction, a pressure side, a suction side and two edges having an edge height measured between the suction side and the pressure side, and • a plurality of tines arranged in a chordwise direction, the tines extending rearwards from an edge of a tooth and having a tine width and a tine height, wherein • the tines have a cross-section with a first straight section forming a suction side of the tine and defining the tine width, and an opposite section forming a pressure side of the tine, • the suction side of the tine transfers smoothly into the suction side of the tooth, • the tine height is larger than the edge height, and • the pressure side of the tine extends in a forward direction beyond the edge of the tooth.

A serrated panel for a trailing edge of a wind turbine rotor blade comprising: • at least two teeth, each tooth having a tip, a base, a length measured in a chordwise direction between the base and the tip, a width measured at the base, wherein the length is larger than the width, and two edges running from the tip to the base, each edge having a tip end-section extending from the tip to an intermediate point of the edge, and a main section extending from the intermediate point towards the base, and • a plurality of tines arranged side by side in a chordwise direction, each tine beginning at one of said edges and extending rearwards, • all tines beginning in one of said main sections have the same, first length, which is between 20 % and 60 % of the length of the respective tooth, and all tines beginning in one of said tip end-sections are shorter than the first length.

The utility model discloses a vertical type self-absorption straw smashing device which comprises a support, a smashing roller and a smashing fixed cutter, the device can be used for a straw smashing and returning single body and can also be fixedly installed behind an existing straw smashing and returning machine, six U-shaped pointed tooth smashing movable cutters are connected to the wall of a smashing cylinder in a screwed mode, and the smashing roller comprises a self-absorption smashing component and a straight smashing component. The crushing roller rotates clockwise to drive airflow to generate downward wind power, during working, straw subjected to primary crushing enters the device from a straw inlet under the action of inertia force, wind power and a flow guide plate to be subjected to secondary vertical crushing operation, and a self-suction crushing cutter and a crushing fixed cutter of the self-suction crushing component cut and tear the straw, so that the straw is subjected to secondary vertical crushing operation. Meanwhile, airflow generated by the self-suction smashing component blows the straw downwards, a straight smashing cutter and a smashing fixed cutter of the straight smashing component continue to cut and tear the straw, finally, the straw is sent out from the lower portion through wind power, the straw smashing fineness is improved, the straw decomposition time is shortened, the structure is simple, and popularization is easy.

A fence grass guard device is disclosed for easily preventing the growth of grass in unwanted areas (i.e., under a fence) without the use of harmful chemicals or sprays. The grass guard device comprises a body component that is configured in a rectangular shape (i.e., rectilinear) and comprised of interlocking dimples and teeth. The body component comprises a plurality of interlocking dimples that snap or snag together for seamless coverage. Further, the body component has a notch cut out to accommodate and fit around a fence pole or post. The body component is secured to the ground with a plurality of sharp or pointed teeth designed to grip the ground. Further, the device can be manufactured in a plurality of colors to match the landscape design or the user's preference.

The utility model discloses a belt sander sharp-tooth rubber wheel for polishing, which belongs to the technical field of gears and comprises a hub, rubber sharp teeth are detachably sleeved on the periphery of the hub, and each rubber sharp tooth comprises a tooth tip portion and a pressing portion. A boss is integrally formed on the inner side wall of the tooth tip part, one side of the hub is inserted into the boss, the other side of the hub is connected with a pressing part through a quick release assembly, and the outer side wall of the pressing part abuts against the inner side wall of the tooth tip part. And a plurality of anti-rotation blocks are arranged between the tooth tip part and the hub. According to the sharp-tooth rubber wheel of the belt sander for polishing, the sharp-tooth rubber which is abraded unevenly or damaged can be replaced conveniently, so that the service life of the sharp-tooth rubber wheel is prolonged, and the using effect of the sharp-tooth rubber wheel is guaranteed.

The invention relates to the technical field of agricultural breeding equipment, in particular to a sharp-tooth-shaped small special-shaped seed clamping device and a design method and an integration method.The sharp-tooth-shaped small special-shaped seed clamping device structurally comprises a steering engine, an electric clamping jaw, a seed collection camera, a clamping arm and a blade, the shape, thickness and size of an end effector are designed, active control is not needed, and the design method is simple. In the clamping process, the tail end deforms to generate clamping force, so that the sharp teeth at the tail end can be slightly embedded into seed coats, the clamping stability is improved, full-automatic low-loss clamping and transportation of miniaturized seeds are realized, the clamping efficiency and precision are improved, manpower is liberated, and the cost is greatly reduced.

The orthopedic reduction forceps comprise two single-blade forceps fixed by a fixing bolt, each single-blade forceps is composed of a forceps head, a forceps body and a forceps handle from head to tail, the thickness of the forceps head of each single single-blade forceps is larger than 4 mm, the thickness of a cutting edge of each single single-blade forceps is larger than 1 mm, a clamping opening of each forceps head is provided with a plurality of reduction teeth, and the top end of each forceps head is further provided with tip teeth; according to the invention, the tip teeth can be easily inserted between fracture blocks, tightly attached to the fracture blocks and stably grasp the fracture blocks, the fracture broken ends can be fixed by matching with the reduction teeth, the fracture broken ends can be kept in a good alignment relationship, and meanwhile, some small tubular bones can be clamped; the forceps body is widened and thickened, the forceps body is short and thick, the fracture broken end can be better held, inconvenience caused by narrow operation space is reduced, and the situation that the fracture broken end cannot be stably held due to the fact that bent forceps and tissue forceps are too long and too thin, and effective reduction is difficult occurs.

A serrated panel for a trailing edge of a wind turbine rotor blade comprising: • at least two teeth, each tooth having a tip, a base, a length measured in a chordwise direction between the base and the tip, a width measured at the base, wherein the length is larger than the width, and two edges running from the tip to the base, each edge having a tip end-section extending from the tip to an intermediate point of the edge, and a main section extending from the intermediate point towards the base, and • a plurality of tines arranged side by side in a chordwise direction, each tine beginning at one of said edges and extending rearwards, • all tines beginning in one of said main sections have the same, first length, which is between 20 % and 60 % of the length of the respective tooth, and all tines beginning in one of said tip end-sections are shorter than the first length.

The wind power cylindrical nut convenient to disassemble and fixed in a tooth tightening mode comprises a wind power nut body, an auxiliary assembly is arranged outside the wind power nut body, and a plurality of locking assemblies are evenly arranged inside the wind power nut body in an annular mode. The locking assembly comprises a limiting groove, the limiting groove is formed in the wind power nut body, the exposed part of the clamping ball is effectively and slowly squeezed into the limiting groove through downward movement of the auxiliary assembly, at the moment, the clamping ball drives the sharp-tooth locking rod to move, the sharp-tooth part of the sharp-tooth locking rod is moved out and embedded into the surface of a bolt, and therefore the wind power nut can be firmly locked. Locking between the wind power nut body and the bolt is effectively achieved, the connection tightness is improved, when the wind power nut body needs to be disassembled, the auxiliary assembly is moved upwards, the clamping ball is gradually free of external force limitation, at the moment, the clamping ball is gradually reset due to the resilience force of the spring, and meanwhile the sharp tooth locking rod is integrally moved into the limiting groove; locking between the wind power nut body and the bolt is relieved, and follow-up dismounting of the wind power nut body is facilitated.

The invention belongs to the field of underground operation engineering of petroleum engineering, particularly relates to a back-up wrench device and a manufacturing method thereof, and aims to solve the problem that an existing sucker rod hydraulic wrench cannot bite a corroded sucker rod when the sucker rod is pulled down. A back-up wrench device comprises a back-up wrench body and a wrench tooth block detachably connected to the back-up wrench body. The back-up tong body comprises a circular plate part and a long handle part, a tong groove used for containing a tong tooth block is formed in the circular plate part, the tong tooth block is installed in the tong groove, a tong tooth head is arranged on one side of the tong tooth block, meshing teeth are arranged on the tong tooth head, and the meshing teeth are longitudinal sharp teeth with angles; when the clamp tooth block is installed in the clamp groove, the clamp tooth head and the meshing teeth on the clamp tooth block are exposed out of the clamp groove. The conical groove formed by the two meshing teeth is firmly meshed with the square edge of the sucker rod, and the action of screwing on and screwing off threads is completed; and the occluded square edge part of the sucker rod can be firmly occluded under the condition of certain corrosion.

The invention relates to the technical field of medical equipment, in particular to a damping structure and an injection pen, the damping structure comprises a jumping ring, a knob, a force applying piece and a fixing buckle, and a through hole is formed in the rear side face of the knob around the axis of the knob and penetrates through the knob in the front-back direction; the end, relative to the first direction, of the penetrating hole is a first end, the end, relative to the second direction, of the penetrating hole is a second end, the first end is provided with a first abutting part, the front side face of the jumping ring is provided with first abutting teeth around the axis of the jumping ring, the front end of each first abutting tooth is provided with a sharp tooth part and a flat tooth part, and the tooth face, relative to the second direction, of each flat tooth part is provided with a first tooth abutting part. The sharp tooth part is provided with a second tooth abutting part, the rear side face of the fixing buckle is provided with a plurality of second abutting teeth around the axis of the fixing buckle, the knob is rotationally arranged at the rear end of the fixing buckle, the jumping ring is rotationally arranged at the rear end of the knob, the first abutting teeth penetrate through the penetrating hole, and the force applying piece is arranged at the rear end of the jumping ring. In conclusion, the damping structure has the effect of effectively improving the use experience and the operation comfort of a user.

The utility model belongs to the technical field of laser cutting, and particularly relates to a laser cutting workbench which comprises a workbench body, a blanking opening is formed in the upper side face of the workbench body in a penetrating mode, rack mechanisms are arranged on the upper side of the blanking opening of the workbench body at equal intervals, side rails are symmetrically arranged on the two sides of the upper side face of the workbench body, and electric sliding tables are arranged on the upper sides of the side rails in a sliding mode. A transverse rail is arranged on the upper sides of the sides, close to each other, of the electric sliding tables, and a laser generator is slidably arranged on the upper side of the transverse rail. When upward sharp teeth of the triangular tooth pieces of the rack mechanism are damaged, only the nut needs to be screwed off, the screw rod is pulled out, the intact sharp teeth of the triangular tooth pieces face upwards, then the screw rod is inserted back again, and the fixing nut is screwed down, the rack mechanism does not need to be wholly replaced, the single triangular tooth piece can be rapidly detached to be replaced, and each triangular tooth piece is provided with three sharp teeth, so that the replacement is convenient. The rack mechanism can be replaced and used three times, replacement and maintenance convenience of the rack mechanism is improved, and the use effect of the rack mechanism is greatly improved.

The utility model relates to the technical field of cutting tools, in particular to a tapper, the tapper comprises a metal matrix and a diamond coating layer, the metal matrix comprises a cylindrical cover body, a connecting body and a connecting shaft, the cylindrical cover body comprises a shell at the upper end and a cutting part at the lower end, a scrap outlet is formed in the shell, and the connecting body is connected with the cutting part. The cutting part is in a sharp tooth shape, the sharp tooth shape is sharper, the cutting effect can be enhanced, the cutting part comprises a set of high sharp teeth and a set of low sharp teeth, and the high sharp teeth are higher than the low sharp teeth. The tapper has the advantages that the tapper has two efficient cutting periods, and the problem that the cutting capacity of the tapper becomes weaker and weaker is solved.

A medium-pitch large wood conveying chain with a sharp tooth structure formed by two-stage accessories belongs to the technical field of chain transmission, comprises a sharp tooth type wood conveying chain body, and is characterized in that the sharp tooth type wood conveying chain body comprises sharp tooth outer chain plates and sharp tooth inner chain plates. Transverse second-level accessories are welded to the top ends of the oppositely-arranged sharp-tooth outer chain plates, the adjacent second-level accessories form an additionally-arranged sharp-tooth structure, the large wood is clamped between the two second-level accessories through the additionally-arranged sharp-tooth structures, and conveying of the large wood is achieved under the condition that the small pitch is kept. Stable conveying of large wood is guaranteed, the tensile strength and the wear resistance of the chain are considered, the functionality and the service life of the chain are guaranteed, and meanwhile, compared with an existing large wood sharp-tooth wood conveying chain, the pitch is remarkably reduced, the conveying efficiency can be improved, the size of the chain wheel can be reduced, and installation convenience is improved.

The utility model discloses a hard alloy circular saw blade for a trephine, which relates to the technical field of cutting and comprises a trephine body, a plurality of groups of saw teeth arranged circumferentially at equal intervals are arranged on the trephine body, each saw tooth consists of a left helical tooth, a right helical tooth and a sharp tooth, the right helical tooth is positioned between the left helical tooth and the sharp tooth, and the cutting edge angle epsilon of the left helical tooth and the right helical tooth is 5 degrees. The tool cutting edge angle epsilon of the sharp teeth is 15 degrees, the sharp teeth are in left-right inclined symmetrical design, centripetal angles with Tp being 1 degree are designed on the side faces of the left inclined teeth, the right inclined teeth and the sharp teeth, and circumferential angles with Tr being 3 degrees are designed on the side faces of the left inclined teeth, the side faces of the right inclined teeth and the side faces of the sharp teeth. Due to the design of the tool cutting edge angle, the cutting amount can be uniformly distributed during cutting, the cutting efficiency is improved, meanwhile, tipping during cutting is avoided to the greatest extent, and the service life of a product is prolonged; due to the design of the centripetal angle and the circumferential angle, the friction of the tooth side face to the workpiece is reduced, the cutting resistance is remarkably reduced, the temperature of the workpiece is reduced, and it is guaranteed that the cutting face of the workpiece such as wood, aluminum and plastic is smooth and free of focal marks.

The novel tile ash flattening device comprises a supporting assembly, a scraping plate and an auxiliary assembly, the supporting assembly comprises a supporting plate and two handles installed on one side of the supporting plate, a sliding groove is formed in the supporting plate, the scraping plate is installed at the end, away from the handles, of the supporting plate, square teeth are arranged on the upper side of the scraping plate, and sharp teeth are arranged on the lower side of the scraping plate. The auxiliary assembly comprises two mounting plates mounted at the end, away from the handle, of the supporting plate and three rolling wheels arranged on the side wall of each mounting plate. According to the novel ceramic tile ash flattening device, the whole ceramic tile ash flattening device can move on a ceramic tile through a mounting plate and rolling wheels in an arranged auxiliary assembly, so that square teeth and sharp teeth of a scraping plate can drag and flatten ash and tighten and flatten slurry, and the probability of hollowing of the ceramic tile is reduced.

The invention provides an automatic crushing device for rare earth oxide production, and relates to the technical field of rare earth oxide production, the automatic crushing device comprises a crushing cylinder, the lower side of the crushing cylinder is provided with a filter plate, the inner side of the crushing cylinder is rotatably connected with a square pipe through a driving mechanism, and a plurality of crushing rods with sharp teeth are rotatably inserted in the two sides of the square pipe; the device further comprises a linkage mechanism for driving the multiple crushing rods to rotate. The square pipe is driven by the driving mechanism to rotate, the square pipe drives the two crushing mechanisms to rotate, meanwhile, through the clutch mechanism, when large materials exist at any position on the hollow shovel plate, the cam and the main shaft can be combined through the clutch mechanism, meanwhile, the main shaft is driven to rotate through the meshing effect of a small gear and a large gear in the crushing mechanisms, and the crushing efficiency is improved. The main shaft drives the cam to rotate, the cam drives the rotating arm to swing forwards and backwards, the rotating arm can knock the firing pin, the firing pin transmits impact force to large materials, and the large materials can be quickly crushed.

The utility model relates to a cervical cerclage device which comprises a plurality of sheet-shaped cerclage bodies, supporting lugs are arranged on the outer side faces of the cerclage bodies, connecting holes are formed in the supporting lugs in a penetrating mode so that operation lines can penetrate through the supporting lugs conveniently, and the axial direction of the connecting holes is consistent with the length direction of the cerclage bodies. A plurality of sharp teeth are arranged on the inner side face of the cerclage body in a protruding mode, and the cerclage body can be bent towards the side where the inner side face is located to form an arc shape. The cerclage bodies are used for being arranged in the circumferential direction of the cervix uteri at intervals, the inner side faces of the cerclage bodies are attached to the cervix uteri, the sharp teeth penetrate through the cervix uteri, and an operation line sequentially penetrates through the connecting holes in the corresponding supporting lugs and then is tightened so that the cerclage bodies can be tightened inwards to complete cerclage. Due to the split type design, the cervical cerclage device is higher in applicability, and due to the sheet-shaped structure, the stress area can be increased so as to reduce tension, and the situation of tissue cutting is avoided.