48 results about "Internal Fixation Devices" patented technology

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.

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.

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.

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.

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 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 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 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.

The invention discloses a two-way fracture internal fixing device, and relates to the technical field of medical instruments, the two-way fracture internal fixing device comprises a fixing plate and fixing nails, the fixing plate is attached to the surface of a broken bone in the axial direction of the broken bone, two sets of fixing nails are arranged on the fixing plate, each set of fixing nails is connected with one broken bone, and a micro-motion gap is formed in the middle of the fixing plate; the micro-motion gap corresponds to the joint of the two broken bones, and the micro-motion gap enables the fixing plate to generate micro-motion deformation. The fixing plate can achieve variable rigidity in a micro-motion gap, then gap micro-motion adjustment at the joint of two broken bones is achieved, rigid fixation is converted into biological adaptation, anatomical structure adaptation and mechanical healing rule adaptation are achieved, enough micro-motion stimulation can be generated, the fracture healing cycle is met, bone reconstruction and development are promoted, and the fracture healing effect is improved. The structure is simple and exquisite, and carrying is convenient.

The present application relates to the technical field of femoral distal fracture fixation, in particular to a femoral distal fracture plate screw combination internal fixation device and a fixing method, the femoral distal fracture plate screw combination internal fixation device comprises: an outer locking plate arranged on the outer side of the distal end of the femur; an inner screw arranged from the inner side of the distal end of the femur; a distal locking hole, a first proximal locking hole and a second proximal locking hole are sequentially arranged on the outer locking plate from the distal end to the proximal end; the number of the first proximal locking hole is multiple, and the multiple first proximal locking holes are staggered arranged on the two side edges of the outer locking plate; and a sighting adjusting frame is used for adjusting and limiting the position and angle of the inner screw. The present application greatly reduces the operation difficulty of implantation, makes the implantation of the inner hollow screw more efficient and safe, and has strong technical repeatability.

The invention discloses a micro-movement fracture internal fixation instrument, and relates to the technical field of medical instruments. The instrument comprises a first strip plate and a second strip plate which can be in sliding fit in the long axis direction of a bone. Each strip plate is locked to the corresponding bone block through a screw with a degradable coating, and the outer diameter of the coating is not smaller than the inner diameter of a plate hole in the initial stage of implantation, so that initial rigid fixation is achieved. The two long strip plates are further fixed to the bone blocks on the opposite sides through middle screws. After implantation, along with gradual degradation of the coating, a gap is generated between the screw and a plate hole, and rigid locking is relieved, so that the two plates can generate controllable relative micro motion along the long axis direction of the bone under physiological load. According to the design, the stability in the early stage of fracture healing is guaranteed, beneficial axial mechanical stimulation can be provided in the middle and later stages, callus formation and fracture healing are effectively promoted, and meanwhile the adverse effect of non-axial micro motion is avoided.

The utility model belongs to the technical field of medical apparatus and instruments, concretely relates to a minimally invasive atlas and axis internal fixation device, including base, the outside fixed connection of base has the mounting panel, the inside sliding connection of mounting panel has the bolt, the upper end contact of base has the connecting plate, the upper end fixed connection of connecting plate has the clamping plate, the inside clamping of clamping plate has the connecting rod, the lower fixed connection of connecting plate has the sliding block, the sliding block is connected with base. This minimally invasive atlas and axis internal fixation device is clamped connecting rod through a plurality of even distribution's clamping plate, can steady connecting rod from multiple directions, greatly enhanced the stability of fixed. The sliding connection of cooperation guide rod and sliding block and the adjusting effect of threaded rod, can accurate adjustment position. In operation, the doctor can more conveniently install the device to the position, ensure the fixed effect, help the patient postoperative recovery, reduce the risk because of the fixed instability brings.

The invention discloses a clavicle intramedullary nail. The clavicle intramedullary nail sequentially comprises an implantation fixing section (12) and an implantation positioning section (14). The implantation fixing section is provided with an elastic needle body structure matched with the physiological curve of the clavicle, the implantation positioning section linearly extends in the implantation direction, the implantation positioning section is provided with an operation connecting channel (15), and the operation connecting channel is formed in the end of the implantation positioning section in the implantation direction; at least two clamping notches (13) are further formed in the side wall forming the operation connecting channel in the implanting direction, and an operation device is externally connected through the operation connecting channel and the clamping notches; the implantation positioning section is further provided with a lock nail connecting channel (16), the lock nail connecting channel penetrates through the implantation positioning section and the operation connecting channel in the locking direction inclined to the implantation direction, and after the lock intramedullary nail is nailed, skin tissue irritation can be avoided, skin inflammation is avoided, surgical wounds are reduced, and the minimally invasive requirement is met. The invention further discloses an internal fixing device with the intramedullary clavicle nail and a mounting assembly.

The application discloses a kind of bionic lantern frame composite internal fixation device and preparation method, it is related to the technical field of orthopedic medical instruments, including implant and multi-bar bridging structure, multi-bar bridging structure is made of multiple longitudinal connecting rods and horizontal locking nail, implant is made of multiple multilevel bionic structures, multilevel bionic structure includes two symmetrically arranged hexagonal upper and lower layer structures and intermediate spiral layer structure arranged between two hexagonal upper and lower layer structures.The application is inspired from macro-micro structure of honeycomb and spent horn, the multilevel bionic structure prepared by coupling bionic technology has excellent mechanical properties, strong shock absorption capacity, can effectively match the mechanical properties of natural bone, can effectively avoid secondary damage and "stress shielding" effect after implantation of patients, and the composite coating introduced by electrochemical deposition method makes up for the problems of insufficient biocompatibility, insufficient antibacterial property and weak osteogenic differentiation ability of single implant structure.

A spine internal fixing device with a fusion function comprises a pedicle screw, the pedicle screw comprises a screw body, a screw tail is arranged at the upper end of the screw body, a nut is connected to the screw tail through internal threads, the screw body and the screw tail are of a honeycomb structure simulating cancellous bone, and solid external threads are arranged on the outer surface of the screw body. According to the spinal internal fixation device with the fusion function, a full-assembly simulation cancellous bone honeycomb structure of a pedicle screw rod nut and a matched connecting piece is prepared by adopting a 3D printing technology, and meanwhile, solid structures of key stress parts such as an external thread tip threaded connection surface are reserved so as to guarantee early mechanical fixation strength; after the components are assembled, a continuous bone ingrowth channel is formed, so that the transformation of internal fixation of the spine from temporary mechanical support to permanent osseous fusion is realized, and various intervertebral, intervertebral, posterior lateral and transverse process bone grafting fusion steps in a traditional spine fusion operation can be omitted.

The application discloses an artificial lamina, which comprises a lamina body and a lamina fixing device; at least two fixing holes are formed on both sides of the lamina body, and the fixing holes on the two sides are correspondingly arranged; an internal thread is arranged in the fixing hole; a receiving groove is formed at each corner of the lamina body; the lamina fixing device comprises a fixing block, a screw rod, a nut and a jackscrew, the fixing block is provided with a transverse through hole, a longitudinal hole formed on the upper surface and a groove capable of engaging with a titanium rod, the transverse through hole and the longitudinal hole are communicated, and internal threads are arranged in the transverse through hole and the longitudinal hole; an external thread on the screw rod is matched with the internal thread of the transverse through hole and can pass through the transverse through hole; an external thread of the jackscrew is matched with the internal thread of the longitudinal hole and can be screwed into the longitudinal hole; an external thread of the screw rod is matched with the internal thread of the nut and can pass through the nut; the external thread on the screw rod is matched with the internal thread of the fixing hole, and the screw rod passes through the corresponding fixing hole. The application further discloses a spinal internal fixation device comprising the artificial lamina.

The utility model discloses a novel metacarpal and phalangeal bone, toe and metatarsal bone fracture reduction instrument, which relates to the technical field of medical instruments and comprises a forceps handle, a forceps head and a limiting device, the forceps head is arranged on the forceps handle, a plurality of forceps claws are arranged on the forceps head, an anti-skidding structure is arranged on the grabbing surface of each forceps claw, and the limiting device is arranged on the forceps handle and can lock the forceps handle. In order to solve the problem of difficulty in metacarpal and phalanx reduction due to lack of special reduction forceps in metacarpal, phalanx, toe and metatarsal bone fracture surgery, the utility model designs the utility model, through the scheme that a plurality of forceps claws are arranged on the forceps head, the metacarpal, phalanx, toe and metatarsal bone reduction forceps can more easily clamp and clamp small, long and narrow bones such as metacarpal, phalanx and toe and metatarsal bones, so that the metacarpal, phalanx, toe and metatarsal bones can be effectively reduced. The reduction effect of a fracture reduction operation is better, fracture in the operation is not prone to being caused, the limiting devices arranged on the forceps handles can lock the forceps handles, the excellent reduction maintaining capacity can be kept under the condition that no external force is used, and a surgeon can conveniently implant an internal fixing device to complete the operation.

The application discloses a clavicle intramedullary nail which comprises an implantation fixing section (12) and an implantation positioning section (14) in sequence. The implantation fixing section has an elastic needle body structure matching the physiological curve of the clavicle, and the implantation positioning section extends linearly along an implantation direction. The implantation positioning section is provided with an operation connecting channel (15) which is arranged at the end of the implantation positioning section along the implantation direction. The side wall of the operation connecting channel is further provided with at least two clamping notches (13) along the implantation direction. An operation device is connected to the operation connecting channel and the clamping notches. The implantation positioning section is further provided with a locking nail connecting channel (16) which penetrates the implantation positioning section and the operation connecting channel along a locking direction which is inclined to the implantation direction. After the clavicle intramedullary nail is implanted, the skin tissue irritation and the skin inflammation can be avoided, the surgical wound is reduced, and the minimally invasive requirement is met. The application further discloses an internal fixation device and an installation assembly with the clavicle intramedullary nail.

The invention relates to the technical field of biomedical composite materials, and particularly discloses a high-strength absorbable intraosseous fixation instrument and a preparation method thereof, the high-strength absorbable intraosseous fixation instrument comprises the following raw materials: 100 parts of polylactic acid base material, and 10-30 parts of barb fiber A / netted braided wire belt A; the instrument is obtained through injection molding or compression molding after barb fibers A / net-shaped braided wire belts A are dispersed in a polylactic acid base material; the polylactic acid base material and the polylactic acid barb fiber A / net-shaped braided wire belt A are jointly used as main raw materials, the biocompatibility is high, the strength can be remarkably improved, meanwhile, the full-degradation characteristic is kept, the barb fiber A can remarkably improve the interface bonding force with the polylactic acid base material, and the strength of the polylactic acid base material is improved. Therefore, the balance between high strength and biocompatibility of the intraosseous fixing instrument is realized; the netted braided wire belts A are uniformly dispersed in the polylactic acid base material, so that a reinforcing steel bar-concrete type reinforced structure can be formed, and the overall rigidity of the material is remarkably improved.

The utility model discloses an enteric hollow capsule, which relates to the technical field of hollow capsules and comprises a first capsule shell, a second capsule shell and a fixing device. The second capsule shell is slidably mounted in the first capsule shell, the fixing device comprises four cylindrical blocks, a cross-shaped supporting rod and six fixing clamping blocks, the four cylindrical blocks are circularly and fixedly connected to the inner wall of the second capsule shell at equal intervals, and the cross-shaped supporting rod is fixedly connected to the surfaces of the four cylindrical blocks; the six fixing clamping blocks are circularly and fixedly connected to the outer surface of the second capsule shell at equal intervals, a fixing clamping groove is formed in the inner wall of the first capsule shell, and the four fixing clamping blocks are slidably clamped into the fixing clamping groove and supported through the cross-shaped supporting rod, so that the connecting position between the first capsule shell and the second capsule shell is prevented from deforming; the connection tightness between the two is ensured, the situation that the internal powdery medicine overflows is avoided, and the normal use of the enteric hollow capsule is ensured.

The invention discloses an internal fixation device for treating hallux valgus. The internal fixation device for treating hallux valgus comprises a working sleeve provided with a working threaded hole; the working piece comprises a threaded rod capable of being in threaded connection with the working threaded hole and a fixed rod with the outer diameter larger than that of the threaded rod in the axial direction, and the fixed rod and the threaded rod are coaxially arranged; the end face of the near end of the nail head is an inclined face, the far end of the nail head is connected with the end of the fixing rod through a ball hinge structure, the ball center of the ball hinge structure coincides with the axis of the workpiece, the nail head is provided with a first tool channel, and a ball head in the ball hinge structure is provided with a second tool channel. The first tool channel and the second tool channel are coaxially arranged and communicate with each other, and the torsion tool can be in torque transmission connection with the threaded rod through the first tool channel and the second tool channel, so that the threaded rod is in threaded connection with the working threaded hole, the deflection angle of the nail head can be controlled, and the metatarsal bone surface of the nail head is flush. The gap between the two broken metatarsal bones can be controlled, and the postoperation metatarsal bone shortening degree is reduced.