78 results about "Internal Fixation Devices" patented technology

The invention discloses a bionic lantern frame composite internal fixing device and a preparation method, and relates to the technical field of orthopedic medical instruments, the bionic lantern frame composite internal fixing device comprises an implant and a multi-rod bridging structure, the multi-rod bridging structure is composed of a plurality of longitudinal connecting rods and transverse locking nails, and the implant is composed of a plurality of multi-level bionic structures; the multi-layer bionic structure comprises two hexagonal upper and lower layer structures which are symmetrically arranged and a middle spiral layer structure arranged between the two hexagonal upper and lower layer structures. According to the invention, inspired from honeycomb and ox horn macro-microstructure, the multi-level bionic structure prepared by adopting a coupling bionic technology has excellent mechanical properties and strong buffering and vibration absorbing capabilities, can be effectively matched with the mechanical properties of natural bones, and can effectively avoid secondary injury and stress shielding effect after implantation of a patient; the composite coating introduced through an electrochemical deposition method solves the problems that a single implant structure is insufficient in biocompatibility, insufficient in antibacterial property and weak in osteogenic differentiation capacity.

The invention provides a postoperative monitoring device based on an implant and a system thereof, which adopt an injectable, wireless and completely degradable ultrasonic sensor to realize real-time, continuous and non-invasive monitoring of a physiological environment (pressure, temperature and pH) around a metal internal fixture (such as a bone lamella and an intramedullary nail). The size of the sensor is 2 * 2 * 2mm < 3 >, and the sensor adopts a dual-network hydrogel matrix and a periodically arranged air column structure, is implanted into a body in a minimally invasive manner, and is naturally degraded within 4-5 weeks after an operation. The system further comprises a data processing unit and a user interface which are used for displaying monitoring data and early warning information. According to the method, the limitation of a traditional monitoring method is overcome, the monitoring accuracy and reliability are improved, the medical cost and the pain of a patient are reduced, and the method has wide clinical application prospects and social and economic values.

The application discloses a spinal anterior structural bone grafting internal fixation device, which comprises a fixing sheath and a steel nail group, the steel nail group is arranged in the fixing sheath, the steel nail group comprises a first fixing nail, a second fixing nail and a third fixing nail, the top of the first fixing nail is connected with a bent first connecting arm, and the top of the second fixing nail is connected with a bent second connecting arm; an adjusting part for adjusting the telescopic length of the first connecting arm and the second connecting arm is arranged on a convex ring of the inner wall of the fixing sheath in a clearance fit mode, and a locking part is arranged above the convex ring; the third fixing nail is arranged in a through hole of the fixing sheath, the top surface of the third fixing nail is provided with a pressing block, and the pressing block presses the locking part into the space between the convex ring and the adjusting part. The device has good stability after the overall structure is combined, and the bone grafting block is fixed firmly; in addition, the device is light and thin, has a small volume, and thus needs a small wound to be formed, has less bleeding, has less damage to the bone, and reduces trauma during and after the operation.

The present invention relates to a split steel plate end-fixed and embracing spinal canal shaping internal fixation device, comprising a straight-edge steel plate and a beveled steel plate distributed on the left and right sides of the spinous process, wherein the straight-edge steel plate has a decompression groove straight edge extending from one side close to the spinous process, a straight-edge guide rail in contact with the spinous process is provided on the outer side of the decompression groove straight edge, and a plurality of positioning screws are provided on the straight-edge steel plate; the beveled steel plate has a decompression groove bevel extending from one side close to the spinous process, a beveled guide rail in contact with the spinous process is provided on the outer side of the beveled steel plate, and a plurality of positioning screws are provided on the beveled steel plate. Thus, the reliability of use and coordination can be effectively improved, the difficulty of use can be reduced, and the labor intensity of medical staff can be reduced. The overall structure is simple and easy to manufacture. A corresponding accommodating cavity can be added to achieve drug delivery, further reducing the number of operating steps.

The present invention provides a combined fracture internal fixation device, which includes a fixing rod and a plurality of sliding fixing members slidably mounted on the fixing rod. A torsion locking member is rotatably mounted above each of the plurality of sliding fixing members. A upper half clamping cover is slidably mounted on one side of the torsion locking member. The torsion locking member is used to twist the using direction of the upper half clamping cover, and the upper half clamping cover is used to cooperate to eliminate the installation deviation of the surgical screw. The present invention can adapt to more surgical plans and can match the differences caused by some bone difference factors, so as to solve the problem that the existing screw installation holes are often pre-fixed and non-adjustable. Due to factors such as the fracture site, type and individual bone differences of different patients, this design of fixed holes is often difficult to accurately adapt, and even requires a second operation to adjust the fixation method.

This application relates to a limiting type internal fixation device for femoral neck fractures, which includes a first fixing plate, a second fixing plate provided on the first fixing plate, positioning screws provided on the first fixing plate, compression screw holes provided on the first fixing plate, and positioning holes provided on the second fixing plate. The second fixing plate is not parallel to the first fixing plate. The positioning screws include a base and a screw body provided on the base. The screw body has telescopic movement in the axial direction and swinging movement in the circumferential direction. The number of positioning screws is two. The limiting type internal fixation device for femoral neck fractures disclosed in this application promotes fracture healing by providing slight sliding in the axial direction and ensures the accuracy of the healing position through micro-displacement and automatic reset in the circumferential direction, so as to avoid excessive shortening of the femoral neck and achieve accurate position healing, thereby obtaining high-quality fracture healing and functional recovery.

This invention relates to the field of orthopedic surgical risk assessment, and in particular to a method and system for orthopedic surgical risk assessment. By acquiring preoperative and intraoperative data of a patient's orthopedic surgery, the method preprocesses the preoperative and intraoperative data, extracts the spatial features of bone microstructure from the initial orthopedic surgical data using a cascaded feature extraction network, calculates the correlation weights between imaging data and biological signals through a cross-modal attention mechanism, and constructs a patient-specific bone model based on finite element analysis to simulate the characteristic orthopedic surgical data in real time. The method simulates the distribution of joint contact stress at different osteotomy angles, the impact of micromotion thresholds at the bone implant interface and hemodynamic changes on the bone healing microenvironment after internal fixation device implantation, significantly reducing complications caused by improper operation and improving the surgical success rate.

The present invention discloses a precise positioning fracture docking robot, which relates to the technical field of medical devices and includes: a workbench and a first linear module installed on the top of the workbench. A first slider is installed on the top of the first linear module, and a second linear module is installed on the top of the first slider. An auxiliary docking device for assisting bone docking is arranged on one side of the second linear module. By setting an expansion auxiliary device, the expansion airbag generates uniform pressure after expansion, which can keep the two docked bones in a relatively stable position and prevent displacement. At the same time, the uniform pressing force provided by the expansion airbag can increase the contact area between the fracture ends, thereby improving the healing conditions of osteocytes. Before installing internal fixation devices such as steel plates and nails or external fixation devices at the fracture site, the expansion airbag can provide short-term stable support, simplifying the operation process of doctors, and thus improving the overall practicality of the device.

A design method of an anatomical plate for treating a tibial plateau fracture and an internal fixation device are provided. The design method includes: obtaining a high-precision three-dimensional model of a fractured bone of a patient; obtaining a post-reduction bone model; extracting point arrays of a cross section and a sagittal plane and obtaining solid body designs of a lateral plate body and a medial plate body; and adjusting thicknesses of proximal ends of the lateral plate body and the medial plate body, adjusting thicknesses of main bodies of the lateral plate body and the medial plate body, cutting the lateral plate body and the medial plate body from a sagittal plane according to a fit condition of the lateral plate body and the medial plate body, and determining a position and a direction of a screw hole to obtain a lateral anatomical plate and a medial anatomical plate.

The air bubble film with the self-adhesion function comprises a main body and a fixing device, the main body comprises a protective layer, a plurality of protective air bubbles and a buffer layer, one end of each protective air bubble is fixedly connected to one side of the protective layer, the buffer layer is fixedly installed in the protective layer, and the fixing device is arranged on the main body. The fixing device comprises two first adhesion layers and two first shielding layers, the two first adhesion layers are fixedly installed on one side of the protection layer, and the two first shielding layers are arranged on one sides of the two first adhesion layers correspondingly. According to the air bubble film with the self-adhesion function, the buffering layer is matched with the protection air bubbles, the protection effect of the main body is improved, meanwhile, one side of the main body is a plane through the protection layer, and therefore after a protection object is wrapped by the main body, the main body is conveniently limited when the protection object is limited through a fixing device.

The utility model provides a controllable micro-motion elastic internal fixation device with a bidirectional locking pressing plate structure, and belongs to the technical field of orthopedic medical instruments. Comprising a plurality of bridging rods; and the two end blocks are arranged at the two ends of the bridging rod. A stable frame structure is constructed through the combination of the bridging rod, the end block and the fixing screw, a fracture part is effectively connected and fixed in the axial direction, then a bidirectional locking mechanism is formed through the upper pressing plate, the lower pressing plate, the adjusting lead screw and the locknut, and the fracture part is locked by screwing the locknut. The distance and pressure between the pressing plates can be accurately adjusted and locked, dynamic force generated by factors such as muscle contraction and limb movement can be effectively resisted in the long-term use process, the pressing plates are prevented from loosening or displacing, and it is ensured that the fixing device always keeps the stable fixing effect; and the problems of poor fracture healing or malformation healing and the like caused by fixation failure are avoided.

The invention discloses a titanium-magnesium nail plate system capable of promoting fracture healing and a manufacturing and forming method. The manufacturing and forming method comprises the steps that a bone fracture plate digital model containing a bone trabecula simulation porous area and a partition filling cavity is established according to a bone anatomical structure, and a titanium-based workpiece of a porous structure is manufactured through selective laser melting forming; a titanium-zinc-calcium component gradient transition layer is constructed layer by layer on the surface of the porous inner wall of the titanium-based workpiece through a directional deposition process, interface bonding is strengthened through low-temperature heat treatment, and the titanium-based workpiece with a gradient interface is obtained; the titanium-based workpiece with the gradient interface is placed in an inert atmosphere, after heating is conducted, molten magnesium or magnesium alloy is injected into all the cavities through a partitioned vacuum pressure injection technology, and after cooling is conducted, a titanium-magnesium composite workpiece is formed; through a customized and interface-controllable manufacturing method, a high-strength titanium skeleton and a degradable healing-promoting magnesium material are firmly combined, and integrated design and manufacturing of mechanical support and biological activity of the internal fixation device are achieved.

The present invention discloses an internal fixation device for patellar fractures, which includes a knee-holding ring, patellar nails, adjustment straps and an adjustment mechanism. The edge of the knee-holding ring is connected to the adjustment straps and / or fixing straps, and the ends of the adjustment straps and / or fixing straps are sleeved on the two end parts of the corresponding patellar nails. Among them, the length of the two ends or the middle part of the adjustment straps can be adjusted to tighten each fixing strap and each adjustment strap. The straps in the present invention can be adjusted both radially and rotate moderately along the knee-holding ring, so as to adapt to the selection of nail insertion at different positions. When inserting the nails, there is no need to consider the constraints of the strap length and the hole positions at the strap ends, and the best position for nail insertion can be found without the aid of positioning instruments. After the nails are inserted, only the tension adjustment of the straps needs to be operated. The operation process during the surgery is simple and efficient.

The utility model provides a femoral neck fracture internal fixation device. The femoral neck fracture internal fixation device comprises a main nail, a first auxiliary nail and an anti-skid assembly. A matching through hole is formed in the main nail; the first auxiliary nail is arranged at the matching through hole of the main nail in a penetrating manner, and the first auxiliary nail is arranged in the direction perpendicular to the gravity; the anti-skid assembly is used for limiting displacement of the first auxiliary nail and the main nail. The first auxiliary nail is arranged in the direction perpendicular to the gravity, the first auxiliary nail can provide support for the second bone block, when the first auxiliary nail bears the gravity of the second bone block, the first auxiliary nail cannot move axially, and the first auxiliary nail can further apply counter-acting force to the second bone block with the first bone block as the fulcrum. The first bone block and the second bone block are limited to move beyond an allowable range, and the stability of fracture healing is improved.

This invention provides an internal fixation device for cancellous bone, belonging to the field of medical device technology. It includes a fixation plate with a plurality of screw holes and positioning holes arranged in a linear array on its top outer wall; and a guide assembly connected to the fixation plate, used to guide the hollow self-drilling screws. By incorporating the guide assembly, this invention not only guides the hollow self-drilling screws, preventing them from deviating from their pre-operatively assessed position during insertion, thus affecting their fixation effect on the fracture site, but also holds the screws during the guiding process, preventing the screw head from tilting and protruding, which could cause skin irritation and affect postoperative recovery.

The invention provides an internal fixation device for long bone fracture, and belongs to the technical field of intramedullary fixation. Comprising an integral assembly, and the integral assembly comprises a connecting cylinder. A first circular shaft is pressed to descend, so that a first fixing clamping shaft and a second fixing clamping shaft are shrunk into a connecting cylinder, then the connecting cylinder is inserted into a bone needing to be connected, the broken bone can be effectively and preliminarily fixed through the connecting cylinder, and the first circular shaft is loosened; a first fixing clamping shaft and a second fixing clamping shaft are unfolded under the counter-acting force of a spring, and a first movable circular plate and a second movable circular plate are driven to ascend through a rotating shaft, so that the first fixing clamping shaft and the second fixing clamping shaft can be embedded into holes reserved in bones, and the fixing effect between the fractured bones is further enhanced; and through movement of the second circular shaft, two fractured bones can be effectively attached, meanwhile, the connecting effect of the fractured position is effectively enhanced, and the healing speed after fracture is increased.

A self-fastening plate device is described. The device includes a composite body formed in part from one or more pieces of shape-memory material. The body includes a longitudinal spine with lengths that could be selected by the surgeon extending from end to end. Wings straightened from preformed circular shapes may be integrated along the length of the spine in a transverse manner. These circularly bent wings are straightened partially or in full to a more flat / open configuration and returns back to a circular configuration when a temperature of the device is raised above a transition temperature of the shape-memory material, thereby generating a gripping force against the fractured bones to a reduced position.

The utility model relates to the field of medical instruments, and discloses an internal fixing device for hallux valgus orthopedic surgery, which comprises an adjusting plate, a limiting plate is arranged at one end of the adjusting plate, the other end of the adjusting plate is fixedly connected with a connecting block, an arc-shaped plate is arranged at one end of the connecting block, a first fastening screw is arranged in the middle of the arc-shaped plate, and a second fastening screw is arranged in the middle of the arc-shaped plate. A rotating rod is rotatably connected to the interior of the connecting block, a winding block is fixedly connected to the middle of the rotating rod, a pull rope is fixedly connected to the middle of the winding block, a connecting plate is fixedly connected to one end of the pull rope, and a spring is fixedly connected to one side of the connecting plate. According to the metatarsal bone fixing device, under the mutual cooperation of the spring, the connecting plate, the winding block, the pull rope, the first clamping block and other structures, the arc-shaped plate can be replaced according to different patients, and therefore the metatarsal bone can be conveniently positioned, and meanwhile a doctor can conveniently operate the metatarsal bone fixing device.

The present application relates to a high-strength absorbable composite active internal fixation device and a preparation method thereof. Specifically, the present application discloses the internal fixation device and a preparation method thereof, and the internal fixation device has excellent biological activity and mechanical properties.

The femoral multi-dimensional interlocking intramedullary nail structure comprises an aiming support, the top of the aiming support is connected to one end of a connecting handle, the other end of the connecting handle is connected to an intramedullary nail, and the two sides of the top of the aiming support are connected to one end of a left support and one end of a right support respectively; a left sleeve is inserted into the other end of the left support, a right sleeve is inserted into the other end of the right support, a left cross nail is connected to the end of the left sleeve, a right cross nail is connected to the end of the right sleeve, an aiming tube is inserted into the bottom of the aiming support, and a blade nail is connected to the end of the aiming tube. According to the internal fixation device, proximal femur fracture accompanied by split fracture of the outer side wall of greater trochanter of femur and small fracture blocks around the greater trochanter are held, so that firmer internal fixation is achieved, and internal fixation failures such as nail withdrawing and nail breaking caused by poor holding can be effectively prevented.

The present invention relates to a special internal fixation device for proximal tibial combined osteotomy, including a support plate and a plurality of locking screws. The support plate is composed of a proximal head, an intermediate connecting part and a distal tail which are sequentially connected and integrally formed. Locking screw holes are respectively provided on the proximal head and the distal tail. A locking / pressurizing combination hole is also provided on the intermediate connecting part. The locking screws are respectively and correspondingly inserted into the locking screw holes and the locking / pressurizing combination holes. The locking screw holes on the proximal head include a first screw hole, a second screw hole and a third screw hole which are arranged horizontally, and an additional screw hole located at the lower corner position of the proximal head. The installation angle of the additional screw hole satisfies that the direction of the locking screw inserted into the additional screw hole is perpendicular to the osteotomy surface at the intercondylar eminence of the tibia. The present invention can provide a more stable knee joint biomechanical environment for the treatment of varus knee osteoarthritis by proximal tibial combined osteotomy, and is more firm and reliable than the existing plate internal fixation.

The present invention relates to an automatic upward-moving steel plate internal fixation device suitable for minimally invasive spinal surgery, which includes a machine head connecting seat. An XY two-way adjustment mechanism and an X-direction adjustment mechanism are respectively arranged on the machine head connecting seat. A main eccentric steel plate clamping device is arranged on the XY two-way adjustment mechanism, and a secondary eccentric steel plate clamping device is arranged on the X-direction adjustment mechanism. The main eccentric steel plate clamping device and the secondary eccentric steel plate clamping device are symmetrically distributed, and a matching structure is distributed between the main steel plate and the secondary steel plate. Thus, two-way adjustment in the X and Y directions can be achieved, enabling the main and secondary steel plates to fit more closely to the bone. The two steel plate clamps are of eccentric structure, which is beneficial for delivering the steel plate along the subcutaneous tunnel to an ideal position. The upward-moving screw assembly is composed of an external thread sleeve and an ordinary screw. Screwing the external thread sleeve into the threaded positioning hole of the steel plate can drive the steel plate and the spinous process to move upward by a certain height and be firmly fixed. The overall structure is relatively simple, easy to manufacture, and the use and implementation are also relatively convenient.

The invention discloses a length-adjustable spinal internal fixing device, and particularly relates to the field of medical instruments. Comprising a connecting pipe; the two connecting pieces are connected to the two sides of the connecting pipe in a sliding mode respectively; the two positioning sleeves are respectively connected to the free ends of the corresponding connecting pieces in a sliding manner; the two flexible casing pipes are arranged in the corresponding positioning sleeves respectively, the inner diameter of the flexible casing pipes is the same as that of the openings in the positioning sleeves, and the flexible casing pipes are connected with the corresponding connecting pieces in a sliding and sealing mode; the two positioning rings are connected to the outer walls of the corresponding positioning sleeves in a sliding mode, and each positioning ring is provided with a limiting hole; the two bone nails are arranged in the limiting holes of the corresponding positioning rings in a penetrating manner; and the driving piece can drive the two connecting pieces to move towards the interior of the positioning sleeve. By the adoption of the technical scheme, the problem that the length of an existing spine internal fixing device cannot be adjusted is solved, and self-adaptive adjustment of the length can be achieved.

The present invention provides a detachable screw and internal fixation device for fixing the anterior pelvic ring. The screw includes a main nail, a nail barrel, a fixing member, and an internal screw. The through hole in the nail barrel is stepped, including a first through hole connected to the main nail and a second through hole with a diameter larger than the first through hole. The first and second through holes are respectively away from and close to the main nail. The main nail includes a nail tail and a nail rod and is integrally formed. The nail tail can pass through the second through hole. The inner wall of the first through hole in the nail barrel is provided with an internal thread, and the internal screw is connected to the nail barrel via the internal thread. The fixing member is disposed in the nail barrel and located between the nail tail and the internal screw. The fixing member retains the nail tail in the nail barrel through the fixing member. The fixing member includes a support portion and a plurality of arc-shaped spring pieces fixed to one end of the support portion near the nail tail and arranged circumferentially along the support portion. The arc center of the arc faces the nail tail, and the plurality of spring pieces tighten or loosen the nail tail. The internal fixation device includes a connecting crossbar and at least two of the above-mentioned screws. The screws are connected by the connecting crossbar, thereby reducing postoperative discomfort.

The invention discloses an internal fixation device for total laminectomy, which belongs to the technical field of medical instruments for orthopedics department and comprises two bases, the two bases are an upper base and a lower base, the top end of the lower base is connected with the bottom end of the upper base through an elastic body, so that the upper base can deflect relative to the lower base, and the elastic body is arranged on the upper base; the axial distance between the upper base and the lower base can be changed; an upper spinous process connecting part is arranged at the top end of the upper base, a first fastening piece is arranged on the upper spinous process connecting part, and the first fastening piece extends in the left side direction and the right side direction of the upper base and is connected with the upper spinous process connecting part; by the adoption of the structure, vertebrae subjected to a total laminectomy and adjacent upper and lower vertebrae can be effectively connected, the stability of the spine is guaranteed while the activity degree of the spine is guaranteed, the vertebral plate connecting device adapts to the physiological structure of the vertebrae after the operation, and the vertebral plate connecting device has the advantages that the vertebral plate connecting device is simple in structure, convenient to use and high in practicability. And the damage to the surrounding physiological structure is small.

The invention discloses a novel intelligent steel plate screw internal fixing device and method.The novel intelligent steel plate screw internal fixing device comprises connecting steel plates, the connecting steel plates comprise straight plates and different plates, the connecting steel plates are provided with at least two screw holes in the length direction, concave-convex textures are arranged in the circumferential directions of the screw holes, and the two connecting steel plates are matched with each other through the concave-convex textures to limit relative rotation; the connecting screws comprise locking screws and lag screws, connecting holes are formed between adjacent screw holes, connecting parts are arranged on the supporting pieces and used for connecting the connecting holes, the supporting pieces are made of degradable materials, the modularized connecting steel plates are matched with the connecting screws to achieve an internal fixing system, and splicing type dynamic fine adjustment of the connecting steel plates and the connecting screws is achieved. The internal fixation shape and size can be flexibly adjusted according to different actual fracture conditions, so that the internal fixation device is suitable for various fracture types, especially complex or irregular fractures, and more accurate fixation force is provided for fracture parts.

The invention relates to the field of lumbar vertebra internal fixing mechanisms, and discloses a lumbar spondylolysis internal fixing device which comprises a pedicle screw, a vertebral plate hook and a connecting rod, a top block is arranged on the top of the pedicle screw in a universal rotating mode, the vertebral plate hook is mainly composed of a hook body and a tail block, the tail block is arranged on the top of the hook body in a rotating mode, and the connecting rod is connected with the top block and the tail block. The device is reasonable in structure and easy to operate, linear step-by-step pressurization on the isthmus is facilitated, and effectiveness of internal fixation is guaranteed.

This invention discloses an orthognathic internal fixation device, comprising: an auxiliary guide plate body having an inner surface for conforming to the jawbone surface, and its two sides for conforming to a distal bone segment and a proximal bone segment, respectively; a first fixation component, at least one of which is used to fix the distal bone segment and the proximal bone segment to the auxiliary guide plate body, respectively; and a second fixation component, at least one of which is used to fix the distal bone segment and the proximal bone segment. This invention provides basic fixation of the distal and proximal bone segments through the first fixation component and the auxiliary guide plate body, providing resistance support for the second fixation component when fixing the distal and proximal bone segments, ensuring that the gap between the two bone segments remains unchanged.

The utility model provides a fracture bridging internal fixing device with a multidirectional self-adaptive fixing structure, and belongs to the technical field of orthopedic fixing instruments. Comprising a bridging part used for fixing a femoral body fracture of a patient; the guide block is used for assisting treatment of the femoral neck fracture of the patient; the connecting block is mounted on the bridging part; the transmission block is mounted at the bottom end of the guide block. According to the fracture fixing device, the connecting block and the transmission block are arranged, the inclination angle of the fracture fixing device can be changed according to the fracture injury condition, and then an anti-spiral screw is guided to enter the fracture fixing device so as to fix the fracture position; the limiting block is clamped with any set of limiting pieces to fix the transmission block in the rotating process of the transmission block, then multi-directional self-adaptive angle adjustment and effective fixation are achieved, and compared with the prior art, the angle adjusting and fixing device has the obvious advantages in the aspects of flexibility and diversity of angle adjustment and fixation.

The invention discloses an internal fixing device with a titanium alloy silk woven belt. The internal fixing device comprises the titanium alloy silk woven belt, a nail-shaped bone needle with an arm, a pressurizing fixing block, a pressurizing fixing screw and a locking buckle, the locking buckles are used for locking the two ends of the titanium alloy silk woven belt; the locking buckle comprises an outer shell, end covers are arranged at the two ends of the outer shell, a first belt hole and a second belt hole are formed in the end covers, an elastic inner shell is arranged in the outer shell and comprises a pair of elastic arc pieces located on the two sides and a transverse piece connected with the elastic arc pieces, the transverse piece is provided with a plurality of puncture limiting heads, and the end covers are provided with a plurality of inner fixing pieces inserted into the inner shell. A plurality of puncture holes are formed in the inner fixing piece, and sliding pieces capable of sliding off are connected to the side walls of the puncture holes through a plurality of connecting pieces. The oval locking buckle is flattened, the inner shell deforms, the resistance strip deforms and then is tightly attached to the titanium alloy silk woven belt, the puncture limiting head of the transverse piece penetrates into the puncture hole, the puncture limiting head is clamped through the clamping groove, the resistance strip increases the movement resistance of the titanium alloy silk woven belt, and the titanium alloy silk woven belt is not prone to sliding off.