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 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 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.

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 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 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 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 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 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.