33 results about "Calcaneal fracture" patented technology

The invention provides a design method of a personalized 3D printing calcaneal plate based on topological optimization. The design method comprises the steps that firstly, three-dimensional reconstruction of a calcaneal model is conducted; then, a calcaneal outer side curved surface contour is extracted and constructed, construction of a calcaneal curved surface plate prototype and configuration of screws are conducted, and finite element analysis and topological optimization redesigning of a calcaneal prototype plate are conducted; and finally, 3D printing forming is conducted. According to the design method, based on the personalized treatment principle, limitation of traditional design and manufacturing technologies is broken through, the calcaneal height and reposition flatness of thearticular surface are effectively recovered, anatomic form matching and maximization of the fixation rigidity are achieved through combination of 3D printing and personalized manufacturing, and accordingly, the effect of calcaneal fracture plate internal fixation treatment is improved. According to the calcaneal plate designed through the design method, the problems of personalized anatomical compatibility difficult to achieve in a traditional calcaneus internal fixation plate, insufficient fixation stability and complications of related soft tissue of implantation materials are solved, shaping is easy, incisures are lower, biomechanical stability is better, and the risk of post-operation skin flap necrosis is lower.

The invention belongs to the technical field of orthopedic surgical instruments and relates to a width restorer for calcaneal fractures. The width restorer for the calcaneal fractures is used for carrying out width restoration on fractured calcaneus. According to the technical scheme, the width restorer comprises calcaneus splints and a lead screw. The plate faces of the two calcaneus splints are parallel and opposite. A splint handle is arranged on the lower portion of each calcaneus splint. The lead screw is arranged in threaded holes of the two calcaneus splints in a penetration mode. One end of the lead screw is provided with a rocker handle. The calcaneus splints are clamped on the two sides of the calcaneus, and a person can rotate the lead screw, softly apply pressure on the two sides of the calcaneus and enable a bony defect gap of a calcaneus body to disappear so that the original width of the calcaneus can be restored and the satisfactory effect can be achieved. The width restorer for the calcaneal fractures is scientific and reasonable in structure, convenient to use, good in restoration effect and capable of accurately and quantificationally restore the normal width of the calcaneus in a personalized mode, preventing soft tissue injury and facture exacerbation, shortening the surgical time and ensuring that an operation has an ideal effect, solves the long-term unsolved problems that the restoration difficulty of the calcaneus is great, the surgical time is long and the radiation dosage is large, and is suitable for being applied and popularized in primary hospitals and large hospitals.

The invention discloses a novel combined-type calcaneal-fracture internal fixation steel plate which comprises a first fixation wing, a second fixation wing, a connecting bolt and six locking screws. Both the first fixation wing and the second fixation wing are of strip structures, and the tail of the first fixation wing and the tail of the second fixation wing are overlapped and fixedly connected through the connecting bolts; the first fixation wing and the second fixation wing form an abtuse angle. When the fixation steel plate is used, the first fixation and the second fixation wing are fixed on the corresponding calcaneal positions step by step and then connected, so that a doctor can more conveniently perform calcaneal-fracture internal fixation surgery, stripping to bone tissue and periosteum is decreased, quality of the surgery and healing of fracture are benefited, and possibility of infection is lowered.

The invention relates to an osteosynthesis pin, in particular for a fracture of a calcaneum, made up of a generally cylindrical hollow body comprising an axial bore extending over the entire length thereof, a plurality of through-holes staggered longitudinally relative to one another and intended for attachment screws to pass therethrough, and at least one oblong opening suitable for an ancillary instrument to pass therethrough for repositioning fractured bone fragments.

The invention relates to a heel bone anatomical form plastic reset bone fracture plate for heel bone fractures, which comprises a hind limb plate for fixing a heel bone on one side of a heel and a forelimb plate for fixing the heel bone on one side of a dorsum pedis, wherein a steel plate is 1.5-2.2 mm in thickness, the hind limb plate is in a bending structure and is 24-30mm in length, and the upper part of the hind limb is a bending bent towards the left along the middle part in an angle of 5-15 degrees; the bone fracture plate further comprises an upper limb plate and a lower limb plate, the upper limb plate and the lower limb plate are respectively fixedly connected with the upper part and the lower part of the hind limb plate, the upper limb plate is 24-28mm in length, the lower limb plate is 48-52mm in length, the front end of the lower limb plate is further fixedly connected with the bottom end of the forelimb plate, an included angle of 90-110 degrees is formed between the front end of the lower limb plate and the bottom end of the forelimb plate, and the forelimb plate is 18-22mm in length; locating holes for locating the specified points of the heel bone are respectively formed at the upper end of the forelimb plate, the front end of the upper limb plate, the upper and the lower ends of the hind limb plate, screw holes are formed on the hind limb plate, the forelimb plate, the upper limb plate and the lower limb plate, and the locating holes and fixing nail pilot holes are round or elliptical holes. The bone fracture plate achieves the optimal effects of reset and internal fixation for various types of heel bone fractures, and has the advantages of being little in damage, convenient to operate and firm for fixation.

The invention discloses a closed pressurized resetter for calcaneal fractures. The closed pressurized resetter for calcaneal fractures comprises an "凵"-shaped bracket, a transverse reset device for the width of the calcaneus fixed on the left and right sides of the "凵"-shaped bracket, and a " The calcaneus height correction device at the bottom of the "shaped bracket; the calcaneus height correction device includes a longitudinal adjustment screw, a longitudinal pressure assembly and a longitudinal fixation assembly; the calcaneus height correction includes a longitudinal adjustment screw, a longitudinal compression Components and longitudinal fixation components; the technical solution of the present invention adopts a three-point relative pressurization structure, and the left and right two calcaneus width transverse reset devices are parallel and relatively pressurized on both sides of the calcaneus waist to correct the calcaneus width. The bone height correction device is placed on the subcalcaneal tubercle of the plantar bone to correct the height of the calcaneus and the articular surface under the talus. The structure is scientific and reasonable, and it can simultaneously reset and correct the width deformity and height dislocation of the calcaneus according to the patient's calcaneus fracture. , convenient adjustment and control, safe and reliable, making the closed reset operation more standardized.

The invention relates to a calcaneal intramedullary fixation system and auxiliary placement instruments of the calcaneal intramedullary fixation system. The calcaneal intramedullary fixation system comprises a calcaneal intramedullary nail and fixing screws, wherein a clamping groove extending radially and an inner threaded hole extending axially are formed in the tail end of the calcaneal intramedullary nail, at least two through holes are further formed in the calcaneal intramedullary nail, the through holes are used for accommodating the fixing screws, the auxiliary placement instruments are used for locating and placing the calcaneal intramedullary nail and the fixing screws, and the auxiliary placement instruments comprise a connecting rod, a locking rod, a locating guide bracket, a fastening nut and a guide sleeve. The auxiliary placement instruments can be used for locating and placing the calcaneal intramedullary nail and the fixing screws used for treating calcaneal fracture, the defect that the wound is large in the traditional treatment for calcaneal fracture is overcome, and the minimally invasive treatment is realized.

The invention relates to a locking and external fixing device for calcaneal fracture treatment and belongs to the technical field of medical instruments. The locking and external fixing device is an L-shaped hollow flat plate; and thread holes, in which screw nails can be screwed, are formed in the side frame of the L-shaped hollow flat plate. The locking and external fixing device for calcaneal fracture treatment belongs to external fixation, so small trauma and less bleeding can be caused; incision can be shortened by times and is only 4cm; incision complication can be obviously reduced when the external fixing device is along a limb body direction; due to external fixation, secondary operation can be unnecessary for calcaneus removal; secondary operation risk can be avoided and medical expanses can be reduced for patients; the external fixing device can be made from light material such as stainless steel, titanium alloy or aluminum alloy; the locking and external fixing device has small size, light weight and causes small pain for patients, thereby facilitating patient recovery; the locking and external fixing device has small damages, small nail path complications; and operation safety can be improved.

The invention discloses a bionic fixing device for treating calcaneal fractures and belongs to the technical field of medical apparatus and instruments for orthopedics. The bionic fixing device is used for treating the calcaneal fractures. The technical scheme provided by the invention is that two intramedullary nails are embedded into calcaneus and are connected in a cross way for resetting the injured calcaneus; bionic pores are respectively formed in the two intramedullary nails; the directions of the pores are consistent with that of bone trabecula at the pore positions; the pores can guide the bone trabecula to be grown into; the intramedullary nails are made of degradable medical magnesium alloys, do not need to perform secondary surgery to be taken out after being planted, and can be autonomously degraded. The bionic fixing device disclosed by the invention is an initiation in calcaneal surgery of the orthopedics; by adopting a bionic principle, the reconstruction of the bone trabecula is realized and the continuousness of the bone trabecula is restored according to the anatomy and biomechanics characteristics of the bone trabecula as well as the degradability of the intramedullary nails, thereby achieving the aim of effectively restoring local normal structures and mechanical conductivity of bone. The bionic fixing device also has the characteristics of improving a fixing effect, facilitating surgical procedures and the like, and is beneficial for restoration of normal functions of patients; an ideal therapeutic effect is realized.

The invention relates to the technical field of medical apparatuses and instruments, in particular to an automatically opening internal fixator made of a nickel titanium shape memory alloy and used for treating the reduction of calcaneal fracture. The fixator is in a hollow spindle shape and is wound by a nickel titanium shape memory alloy wire. The fixator comprises two parts, namely the spindle (1) and fixing ends (2) at two ends of the spindle; and the flexibility of the spindle (1) is matched with that of normal tubercle joint angle. The fixator has the advantages of simple structure, convenient operation, short operation time, and capacity of reducing radiation injury of X rays to patients and medical care personnel, does not need bone graft, really realizes minimally invasive, is favorable for wound healing, relieves the pain of the patients, has high support strength of the nickel titanium alloy and good tissue compatibility, and can play a role in continuously supporting.

A plate for treating calcaneal fractures comprises a first portion extending along a first longitudinal axis from a first end to a second end and including a plurality of first openings extending therethrough extending along a second longitudinal axis from the a first end connected to the second end of the first portion to a second end, the first and second portions being angled relative to one another such that, when the plate is positioned along a desired portion of a calcaneus bone, the first and second portions extend parallel to a superior surface of the bone bordering a subtalar joint, the second portion including a plurality of second openings extending therethrough, wherein each of the first and second openings are configured to receive a bone fixation element therein at a user-selected angle relative to a central axis thereof.

The invention discloses a calcaneal fracture repositor. The calcaneal fracture repositor comprises a boot-shaped block, a front side plate connected to the front side of the boot-shaped block, a skinpull rod connected to the front side plate, a traction device arranged at the bottom of the boot-shaped block, a jacking device rotationally connected to the bottom of the boot-shaped block and a pressurizing device arranged on the boot-shaped block. Traction, opening, squeezing, resetting and fixing operation of the repositor are conducted at the same time, and the repositor can be operated underdirection vision, so that grafted bone, a steel plate and other implants in a surgery are convenient to fix. The calcaneal fracture repositor is scientific and reasonable in structure, good in reseteffect, convenient to use, capable of accurately and individually recovering the calcaneus anatomic form and ensuring that the surgery achieves an ideal effect, saving surgery time, reducing bleedingand radiation and saving labor and suitable for application and popularization in primary hospitals and all major hospitals, and avoids fluoroscopy.

The invention discloses an internal fixing device for calcaneal fracture, a fixing steel plate is bent smoothly in an arc shape and is attached to the surface of the calcaneal tuberosity, a plurality of threaded holes are formed in the fixing steel plate, one threaded hole is formed in the center of the arc-shaped bend, and a bone penetrating fixing assembly penetrates through the threaded holes and then penetrates into the calcaneus to be matched with the fixing steel plate to fix the calcaneus. Screws penetrate through the threaded holes and then penetrate through the calcaneus to be matched with the fixing steel plate to fix the calcaneus. The connecting plate is L-shaped, one end of the connecting plate is arranged at the top of the bent position of the fixing steel plate, the screw penetrates through threaded holes in the center of the connecting plate and the center of the bent position and then vertically extends downwards to pierce the calcaneus, the other end of the connecting plate extends downwards, a puncture hole is formed in the connecting plate, and the fixing needle penetrates through the puncture hole and then horizontally extends to pierce the calcaneus. The calcaneus is fixed in the fixing mode that the micro steel plate is combined with the screws, minimally invasive surgery imbedding can be achieved, firm fixing can be achieved, and early movement of a patient is facilitated.

The invention discloses a calcaneal fracture reduction device including a plantar flexion, wherein a supporting frame is fixedly mounted on the outer surface of the bottom end of the plantar flexion,a top rod is fixedly mounted on one side of the outer surface of the supporting frame, a Steinmann pin is fixedly mounted on the other side of the outer surface of the supporting frame, and a pair oftowel clips is fixedly mounted on the outer surface of the upper end of the supporting frame. According to the calcaneal fracture reduction device, the problem of how to perform calcaneal fracture reduction and temporary fixation during a calcaneal fracture operation can be solved through a plurality of parts. The supporting frame abuts against the lisfranc position to achieve an effect of a supporting point, the pair of towel clips pulls the device to recover the calcaneal height, a Steinmann pin prying extractor recovers a angle of the calcaneus, a combination of a few devices is used forcalcaneal fracture closed reduction or open reduction, the fracture reduction can be temporarily fixed after the reduction, so that the most complete calcaneal fracture reduction effect is reached, the use by people is facilitated, and the calcaneal fracture reduction device has better use prospect.

The invention discloses a calcaneal-fracture-closed-reduction-internal-fixation assisting method based on a digitized 3D printing tool. The method includes the steps of modeling and analyzing an illness state; simulating fracture reduction; determining the position of an internal fixation device; determining positions of reduction kirschner wires after fracture reduction; determining positions ofthe reduction kirschner wires before fracture reduction; designing a steering tool before fracture reduction; designing a fracture internal fixator implantation guide plate; preparing and testing allsteering tools through 3D printing.

A plate for treating calcaneal fractures comprises a first portion extending along a first longitudinal axis from a first end to a second end and including a plurality of first openings extending therethrough extending along a second longitudinal axis from the a first end connected to the second end of the first portion to a second end, the first and second portions being angled relative to one another such that, when the plate is positioned along a desired portion of a calcaneus bone, the first and second portions extend parallel to a superior surface of the bone bordering a subtalar joint, the second portion including a plurality of second openings extending therethrough, wherein each of the first and second openings are configured to receive a bone fixation element therein at a user-selected angle relative to a central axis thereof.

The invention discloses an intraoperative device for exposure of a comminuted calcaneal fracture. The device comprises a base, wherein a frame body is fixed on the base; a longitudinally arranged bar is arranged on the frame body; the bar comprises a group of cylindrical blocks which are longitudinally distributed and are provided with through holes; rolling bearings are arranged at the upper end and the lower end of each cylindrical block; outer rings of all rolling bearings are fixed to the cylindrical blocks; inserting blocks are fixed on inner rings of the cylindrical blocks; column tubes are arranged on the inserting blocks; the inserting blocks all are fixed in the corresponding through holes of the column tubes; a fixed block is fixed on the outer contour surface of each column tube; each fixed block is in threaded connection with a bolt; guide rods are fixed on the contour surfaces of all cylindrical blocks; a channel I communicating with the through hole of the corresponding cylindrical block is formed in each guide rod; the through holes of the cylindrical blocks communicate with the through holes of the column tubes; a channel II is formed in a connecting rod at the topmost end; a guide ring frame is fixed on the connecting rod at the topmost end; the channels I, the channel II and the guide ring frame are provided with pulling ropes; and a latch needle is fixed at the outer end of each pulling rope. The intraoperative device is ingenious and reasonable in structure and worthy of popularization and application.

The invention provides a calcaneal fracture combined repositor, and belongs to the technical field of orthopedic medical devices. The calcaneal fracture combined repository is used for repositioning acalcaneal fracture. The technical scheme is that a left tong rod and a right tong rod are placed crosswise, and the tong heads and tong handles of the left tong rod and right tong rod are laterally opposite to each other, shaft holes of the left tong rod and right tong rod are vertically opposite to each other, the upper portion of a repositioning combined shaft is a vertical shaft rod, the lowerportions of the repositioning combined shaft are two vertical plates parallelly opposite to each other, the two vertical plates are respectively provided with opposite horizontal shaft holes, the shaft holes of the left tong rod and right tong rod sleeve the shaft rod of the upper portion of the repositioning combined shaft, the shaft holes and the shaft rod cooperatively rotate, horizontal shafts are arranged in the horizontal shaft holes in the lower portions of the repositioning combined shaft, the front end of a lower push rod is a push plate, the back portion of the lower push rod is a pressing rod, a shaft hole is formed between the push plate and the pressing rod, the horizontal shafts of the lower portions of the repositioning combined shaft are in rotatable and cooperative connection with a shaft of the lower push rod. The calcaneal fracture combined repositor has the advantages that reposition orthotics can be performed by enlarging the calcaneus width and reducing the calcaneus height, the operating difficulty is reduced, the operation time is shortened, and the effect of the reposition orthotics is improved.

The invention discloses an intraoperative device for exposure of a comminuted calcaneal fracture. The device comprises a base, wherein a frame body is fixed on the base; a longitudinally arranged bar is arranged on the frame body; the bar comprises a group of cylindrical blocks which are longitudinally distributed and are provided with through holes; rolling bearings are arranged at the upper end and the lower end of each cylindrical block; outer rings of all rolling bearings are fixed to the cylindrical blocks; inserting blocks are fixed on inner rings of the cylindrical blocks; column tubes are arranged on the inserting blocks; the inserting blocks all are fixed in the corresponding through holes of the column tubes; a fixed block is fixed on the outer contour surface of each column tube; each fixed block is in threaded connection with a bolt; guide rods are fixed on the contour surfaces of all cylindrical blocks; a channel I communicating with the through hole of the corresponding cylindrical block is formed in each guide rod; the through holes of the cylindrical blocks communicate with the through holes of the column tubes; a channel II is formed in a connecting rod at the topmost end; a guide ring frame is fixed on the connecting rod at the topmost end; the channels I, the channel II and the guide ring frame are provided with pulling ropes; and a latch needle is fixed at the outer end of each pulling rope. The intraoperative device is ingenious and reasonable in structure and worthy of popularization and application.

The invention relates to a pressure-adjustable balloon calcaneus clamp which is characterized by comprising an ankle restraint ring, a balloon and a liquid injection device, wherein the ankle restraint ring is used for being hooped at the ankle joint so as to prevent the calcaneus clamp from dropping when the balloon is subjected to liquid injection and pressurized; the balloon is stirrup-shaped; the bottom of the balloon is used for coating the lower part of the calcaneus; two sides of the balloon are used for coating the side faces of the calcaneus; the upper ends of the two sides of the balloon are connected onto the ankle restraint ring; medial and lateral malleolus exposure holes are formed in the two sides; a liquid injection joint used for being connected with a liquid injection device is formed in the balloon; the liquid injection device is used for filling liquid into the balloon so as to expand the balloon. The pressure-adjustable balloon calcaneus clamp disclosed by the invention is ingenious in structure, reasonable in design and uniform in pressurization and can assist in restoration of calcaneal fracture blocks or prevent further displacement of the fracture blocks in the process of treating calcaneal fracture, and bruise and necrosis of local skin and other soft tissues can be avoided.

The invention relates to a heel bone anatomical form plastic reset bone fracture plate for heel bone fractures, which comprises a hind limb plate for fixing a heel bone on one side of a heel and a forelimb plate for fixing the heel bone on one side of a dorsum pedis, wherein a steel plate is 1.5-2.2 mm in thickness, the hind limb plate is in a bending structure and is 24-30mm in length, and the upper part of the hind limb is a bending bent towards the left along the middle part in an angle of 5-15 degrees; the bone fracture plate further comprises an upper limb plate and a lower limb plate, the upper limb plate and the lower limb plate are respectively fixedly connected with the upper part and the lower part of the hind limb plate, the upper limb plate is 24-28mm in length, the lower limb plate is 48-52mm in length, the front end of the lower limb plate is further fixedly connected with the bottom end of the forelimb plate, an included angle of 90-110 degrees is formed between the front end of the lower limb plate and the bottom end of the forelimb plate, and the forelimb plate is 18-22mm in length; locating holes for locating the specified points of the heel bone are respectively formed at the upper end of the forelimb plate, the front end of the upper limb plate, the upper and the lower ends of the hind limb plate, screw holes are formed on the hind limb plate, the forelimb plate, the upper limb plate and the lower limb plate, and the locating holes and fixing nail pilot holes are round or elliptical holes. The bone fracture plate achieves the optimal effects of reset and internal fixation for various types of heel bone fractures, and has the advantages of being little in damage, convenient to operate and firm for fixation.

The invention belongs to the technical field of orthopedic surgical instruments and relates to a width restorer for calcaneal fractures. The width restorer for the calcaneal fractures is used for carrying out width restoration on fractured calcaneus. According to the technical scheme, the width restorer comprises calcaneus splints and a lead screw. The plate faces of the two calcaneus splints are parallel and opposite. A splint handle is arranged on the lower portion of each calcaneus splint. The lead screw is arranged in threaded holes of the two calcaneus splints in a penetration mode. One end of the lead screw is provided with a rocker handle. The calcaneus splints are clamped on the two sides of the calcaneus, and a person can rotate the lead screw, softly apply pressure on the two sides of the calcaneus and enable a bony defect gap of a calcaneus body to disappear so that the original width of the calcaneus can be restored and the satisfactory effect can be achieved. The width restorer for the calcaneal fractures is scientific and reasonable in structure, convenient to use, good in restoration effect and capable of accurately and quantificationally restore the normal width of the calcaneus in a personalized mode, preventing soft tissue injury and facture exacerbation, shortening the surgical time and ensuring that an operation has an ideal effect, solves the long-term unsolved problems that the restoration difficulty of the calcaneus is great, the surgical time is long and the radiation dosage is large, and is suitable for being applied and popularized in primary hospitals and large hospitals.

The invention discloses a calcaneal-fracture-closed-reduction-internal-fixation assisting method based on a digitized 3D printing tool. The method includes the steps of modeling and analyzing an illness state; simulating fracture reduction; determining the position of an internal fixation device; determining positions of reduction kirschner wires after fracture reduction; determining positions ofthe reduction kirschner wires before fracture reduction; designing a steering tool before fracture reduction; designing a fracture internal fixator implantation guide plate; preparing and testing allsteering tools through 3D printing.

The invention discloses a fixation plate for calcaneal fracture. The fixation plate comprises a fixation plate main body, a kirschner wire threading-in hole movable mechanism and foldable fixed side wings; the top part of the fixation plate main body is movably connected with the kirschner wire threading-in hole movable mechanism; two ends of the fixation plate main body are movably connected withthe foldable fixed side wings; the top part of the interior of the fixation plate main body is fixedly connected with a screw hole diameter adjustable mechanism; a compression attaching layer is tightly attached to the bottom end of the fixation plate main body; the top end of each foldable fixed side wing is fixedly connected with side wing equidistant scales; the side wing equidistant scales can facilitate a medical worker to obtain partial data; anti-wear soft pads can very well prevent corners from damaging a patient; the screw hole diameter adjustable mechanism reflects adjustability ofthe fixation plate very well; the foldable fixed side wings reflect the fit fixity of the fixation plate very well; the kirschner wire threading-in hole very well completes threading in and fixation of a kirschner wire; and the fixation plate is suitable for the technical field of medical devices, and has broad development prospects in future.

The invention provides an auxiliary device for treating calcaneal fracture under an arthroscope. The auxiliary device includes a simple retractor, a first auxiliary mechanism and a second auxiliary mechanism. The first auxiliary mechanism includes a first guide needle, a first inner core and a Y-shaped sleeve pipe, and the second auxiliary mechanism includes a second guide needle, a second inner core and a positioning sleeve pipe. The invention further provides positioning operation methods of the first auxiliary mechanism and the second auxiliary mechanism. By using the operation method, theY-shaped sleeve pipe and the positioning sleeve pipe can be smoothly fixed, the operation of the subtalar arthroscope and a manipulator can be conveniently realized by using the Y-shaped sleeve pipe and the positioning sleeve pipe, and then the smooth operation of a surgery is facilitated; and meanwhile, the Y-shaped sleeve pipe and the positioning sleeve pipe can prevent soft tissue from being damaged when the subtalar arthroscope and the manipulator descend repeatedly, and then the surgical effect can be guaranteed.

The invention provides an extracutaneous reduction fixation device and a reduction method for calcaneal fracture, comprising a bottom plate, a lateral plate and a medial plate. The outer surface of the outer plate and the inner surface of the inner plate are respectively provided with annular sliding paths, the annular sliding paths are provided with sliding blocks, the sliding blocks are also hinged with telescopic rods, and the free ends of the telescopic rods are provided with connection structures for connecting with bone screws or Swipes implanted in the calcaneus. The outer side plate comprises a restoring plate and a bone plate. The restoring plate is provided with an annular sliding path, the inner ring of the annular sliding path is provided with an annular through hole, and the bone plate is connected with the peripheral edge of the annular through hole. The bone plate is provided with a plurality of locking threads for penetrating the bone screw. The calcaneal fracture external reduction fixation device provided by the invention adjusts the bone screw or the Steinmann pin to the proper position by moving the length of the slider and the telescopic rod, reduces the calcaneal fracture, implants the locking screw through the suitable locking screw hole on the bone plate connected with the lateral plate after the fracture reduction is satisfactory, and percutaneous fixates the calcaneal fracture.

The invention discloses a calcaneal traction restorer which comprises a sliding rod, a sleeve, symmetrical arms, a pull rod, a supporting rod and positioning holes, wherein one end of the sliding rod is connected with one symmetrical arm to which one end of the pull rod is connected movably, the other end of the sliding rod is sleeved in the sleeve, the middle part of the pull rod is connected with the supporting rod moveably, the other end of the supporting rod is connected with one end of the sleeve, the other end of the sleeve is connected with the other symmetrical arm, and the outer endsof the symmetrical arms are provided with the positioning holes or grooves. The calcaneal traction restorer has the advantages of convenient operation, accurate positioning, good treatment effect, low cost and little discomfort of patients and can be used for position maintenance after traction reduction and fracture reduction in a calcaneal fracture operation for facilitating the traction in thecalcaneal fracture operation, providing stable traction force, and improving the fracture reduction accuracy and the operation treatment effect. The calcaneal traction restorer can stably maintain positions after traction and fracture reduction, reduce iatrogenic injury and lighten the treatment burden of patients and is an ideal special fracture reduction medical appliance.

The invention discloses a calcaneal fracture electric traction poking reduction device comprising a first kirschner wire, a first kirschner wire kit, a driving mechanism, a second kirschner wire, a second kirschner wire kit and a third kirschner wire. The first kirschner wire kit includes a first fixed end and an inner sliding end. The first fixed end is hollow inside, and the hollow position is fitted with the first kirschner wire. The driving mechanism comprises a driving rod assembly and a power assembly. The driving rod assembly comprises an external sliding end, a retaining ring, a rack end and a poking fixed end. The poking reduction device can better achieve traction and poking reduction of the fractured calcaneus.

The invention relates to a calcaneus bone fracture compression restoration device, which belongs to the technical field of orthopedic medical appliances and is used for compression restoration on the calcaneus bone fracture. The calcaneus bone fracture compression restoration device has the technical scheme that a clamp type structure is used; the splint surfaces of two splints are parallel and opposite; the splints are clamped at two sides of the calcaneus to be restored; two handles are tightly held; the two splints exert the pressure to the middle from the two sides of the calcaneus for performing; the calcaneus bone fracture restoration operation is performed; and the goal of correcting the calcaneus widening malformation is achieved. Press balls and springs arranged on the two splints can achieve high fitness on the bone fracture part; the integral uniform flexible compression is performed along with different heights of the bone fracture position; and a good compression restoration effect is achieved. The calcaneus bone fracture compression restoration device belongs to the initiate of the a calcaneus bone fracture restoration appliance, and has the advantages that the structure is simple; the use is convenient; the pressurization is uniform and reliable; and the restoration effect is good. The calcaneus bone fracture can be subjected to restoration operation in the soft closed state of skin, muscles and the like; the calcaneus widening malformation is corrected; the defects of a conventional operation method is are avoided; and adverse conditions are created for performing minimally invasive surgery.