41 results about "External fixator bar" patented technology

A protractor for use with an external fixation frame is provided. The protractor may include a face having angle designations thereon and a set of opposed and extending flanges projecting from said face. The flanges may connect to a portion of an external fixation frame, such as a ring (or other component) of the frame. The face may also include a post member to which a rotatable dial is mounted. An elongate member may be pivotally connected to a portion of the post member and may include a clamp. The clamp may be used to connect to an alternate portion of an external fixation frame, such as a strut of the frame. Thus, the protractor may be connected to two points on an external fixation frame so as to measure the angle between such points. Related methods of using the aforementioned protractor are also disclosed.

The invention relates to the technical field of medical apparatus and instruments, and discloses an external fixing frame for postoperative nursing of the bone traumatology department, the external fixing frame comprises a nursing bed, a side plate is fixedly mounted at the edge of the nursing bed, a U-shaped frame is slidably arranged on the outer wall of the side plate, and a driving device is arranged on the U-shaped frame and is used for driving the U-shaped frame to slide back and forth on the side plate. The legs of a patient are placed in the lower clamping sleeve, when the upper clamping sleeve gradually gets close to the lower clamping sleeve, magnetism of a magnetic block is utilized to push a piston, the piston moves along an arc-shaped cavity, the piston moves along the arc-shaped cavity so that air in the arc-shaped cavity can be inflated into an air bag through a communication opening, the air bag is inflated and swelled to be attached to the legs of the patient, and fixing is firmer and more comfortable; certain buffering and damping functions are also achieved, and the legs of the patient are prevented from being secondarily hurt. The external fixing frame is novel in design and simple in structure, and has the advantages that stretching traction and knee bending exercise can be achieved at the same time, legs are firmly and comfortably fixed, and limbs can be conveniently kept warm.

The present invention discloses a freely-connectable three-strut parallel orthopedic external fixator including two fixation rings and three struts, connecting holes are circumferentially and uniformly distributed on the ring surfaces of each fixation ring, each strut provides with two driving translational pairs, a revolute pair and a spherical pair. Two fixation rings are respectively fixedly connected with the bone segments of the fracture site by using medical metal bone pins; adjusting the driving translational pairs of the six struts can achieve six DoF relative movement of the two fixation rings, thereby achieving fracture reduction. The external fixator of the present invention realizes freely connection between the two fixation rings, which facilitates fixator installment; number of struts is less than the existing external fixators, thus the present invention has light weight and less interference on the observation of fluoroscopic images.

The invention relates to an external fixing frame gradual traction device for remedying knee joint stiffness and a method thereof. The invention uses the action theory of a lever, a cable and a pulley for slow and gradual retrenching traction on the far end of a crus by an external fixing frame and a cable to ensure that the crus bends gradually by taking the knee joint as a shaft along with the time, so as to achieve the goal that the bending action range of the knee joint is increased gradually. The method comprises the concrete steps as follows: 1) the external fixing frames are arranged on the thigh and the crus; 2) the external fixing frame of the thigh is fixed on a wedge bracket to hang the crus; 3) a steel cable system is arranged to draw the far end of the external fixing frame of the crus; 4) the steel cable is retrenched for multiple times every day to ensure that the steel cable pulls the crus to bend passively by taking the knee joint as the shaft, so as to increase the bending degree of the knee joint gradually; and 5) when the bending degree of the knee joint is increased by 15 to 30 degrees, the cable is released to carry out the active action and the passive action of the knee joint, solidify the action degree of the knee joint and avoid the bending stiffness of the knee joint. The method overcomes the disadvantage that the knee joint lysis has large injury and bad effect, and the method is the ideal method for improving the knee joint function practically.

The invention discloses an arc-shaped external fixator for soft tissue traction. The arc-shaped external fixator for soft tissue traction is characterized by comprising a pair of arc-shaped guide rails, an arc-shaped rack, a sliding bar pin clip, a fixed bar pin clip, a worm, a clamp spring and multiple Z-shaped bone pins, wherein the sliding bar pin clip and the fixed bar pin clip are arranged on the two sides of the arc-shaped guide rails respectively in a sleeving mode, the worm is screwed to one end of the arc-shaped rack and the fixed bar pin clip, the clamp spring is arranged at the tail end of the worm in a sleeving mode, the Z-shaped bone pins are arranged on the sliding bar pin clip and the fixed bar pin clip, and the worm meshes with the arc-shaped rack through threads on the worm. In use, soft tissue can be pulled along an arc-shaped track, so that the arc-shaped external fixator for soft tissue traction is suitable for traction of soft tissue of cylindrical muscle or body, cutting of skin or soft tissue is avoided, and secondary injury is avoided.

The invention provides a fibula transverse bone carrying external fixing frame device which comprises a fibula carrying device, a tibia fixing device and a connecting device, the fibula carrying device drives a fibula carrying frame to move synchronously through movement of an adjusting device, position deviation of bone blocks of a fibula osteotomy section is achieved, the tibia fixing device comprises a tibia fixing frame and a deviation rectifying adjusting device, the deviation rectifying adjusting device can adjust the fixing positions of the tibia fixing frame and the connecting device, and the fibula carrying device and the tibia fixing device are connected through the connecting device. The invention further provides a using method of the fibula transverse bone carrying external fixing frame device. Only the fixing fulcrum is arranged on the tibia; the number of wounds on the tibia side is reduced; the bearing capacity of the tibia after operation is not affected, meanwhile; bone carrying operation is conducted on the fibula side; transverse fibula carrying is achieved; the fibula is located in the deep layer of skin fascia; muscle groups in front of and behind the fibula are wrapped; and a richer capillary basis is provided for bone carrying at the fibula end; and the blood supply repairing effect is better.

A fracture reduction method and a parallel external fixator for fracture reduction for realizing the method, the fracture reduction method being used for existing six-chain ring-shaped parallel external fixators in minimally invasive fracture reduction or osteotomy of limbs. The parallel external fixator comprises two fixation rings, six struts and six markers, the fixation rings are arranged with a plurality of connecting holes, the struts are arranged with a spherical hinge, a driving joint (1302), a quick-mounting component and a universal hinge, the markers comprise marker balls and a pin shaft. The parallel external fixator can improve the treatment accuracy, reliability and operation convenience.

The invention discloses a tibia locking nail plate external fixator and a using method thereof. The tibia locking nail plate external fixator comprises a fixing plate and locking screws, wherein screwholes and threads are evenly formed in the fixing plate; the locking screws are installed in the screw holes, and the locking screws can be screwed into the screw holes for locking and fixing; the surface, directly facing and parallel to the front inner side of the tibia, of the fixing plate is an inner bottom arc surface; and the side surface, parallel to the front edge of the tibia, of the fixing plate is a peripheral arc surface consistent with the radian of the tibial axis. The external fixator has the advantages of serving as both an external fixator (external fracture fixation) and a locking bone fracture plate (internal fracture fixation), the tibia locking nail plate external fixator is used for treatment of a tibial distal fracture operation, closed reduction or minimally invasive incision reduction, the minimally invasive concept is embodied, the rapid rehabilitation surgery concept is embodied, and the fixator has high biomechanical stability through biomechanical measurement.

External fixator assemblies, systems, and methods thereof. An external fixator system may include a plurality of fixator assemblies configured to connect a plurality of pins, for example, positioned on opposite sides of a fractured bone, with one more rods. The fixator assemblies may include a plurality of clamp assemblies that are configured to clamp onto the rods. A distractor / compression instrument is used to adjust the location of a clamp assembly along the length of its rod.

The invention discloses a femoral head external fixation drilling support. The drilling support comprises an outer fixed mount, a guide adjusting mechanism, a drill bit and a crossing rack, wherein the crossing rack is supported on the bearing surface outside the femoral head; the outer fixed mount is arranged on the crossing rack in a sliding mode; the guide adjusting mechanism is arranged on theouter fixed mount in a sliding mode; the drill bit is arranged on the guide adjusting mechanism; the drill bit is driven by the guide adjusting mechanism to be adjusted to a preset position and a preset angle on the outer fixed mount to form locking; the outer fixed mount is arranged on the crossing rack in a sliding mode, so that the position, relative to the surgical site, of the outer fixed mount can be adjusted conveniently; the outer fixed mount is locked with the crossing rack after being adjusted in place, and the stability of the outer fixed mount is maintained; and the guide adjusting mechanism has an effect of guiding and adjusting the drill bit, so that the drill bit is ensured at the optimized position and optimized angle, and can precisely drill to the locus part. The femoralhead external fixation drilling support also has the advantages of reliability in use, simplicity in operation and easiness in maintenance.

The invention discloses a single-rod four-nail fracture outer fixing frame. The outer fixing frame comprises two head end fixing structures and corresponding fixing nails. And at least two end multi-dimensional fixing pieces and corresponding fixing nails. The outer sides of the two fixing nails at the head end fix the head end of the connecting rod through head end fixing structures, and the outer sides of the fixing nails at the tail end fix the tail end of the connecting rod through tail end multi-dimensional fixing pieces. The external support is simple in structure, traumaticity caused byan operation to a patient can be reduced as much as possible, the size and the weight of the external support in the rehabilitation period of the patient can be reduced, action flexibility of the patient in the rehabilitation period is improved, compression of the external support to a fracture part is reduced, and recovery is facilitated.

The invention discloses a tibia whole-segment anatomical locking plate type external fixing frame which is an integral steel plate. The outer fixing frame is similar to the inner side of the tibia far end and the inner side of the tibia plateau in anatomical form, the middle section of the plate-type structure is consistent with the front inner side of the tibia shaft in shape, and multi-angle adjustable locking nail holes are formed in the two ends. The device accords with medical AO and BO theories, can be used by domestic adults with the height of 160-175cm, can comprehensively consider various types of fractures of tibia, can replace internal fixation, avoids secondary operation of taking out internal fixation, and prevents complications of internal fixation of tibia fractures. And the problem troubled by people who are not suitable for internal fixation of patients can also be solved. Meanwhile, the defects that a traditional single-arm outer frame is tedious, heavy, poor in stability and incapable of effectively fixing fractures at the far end and the near end of the tibia are overcome, time and labor are saved during operation, social benefits are economical and practical, pain of a patient lying for a long time after an operation is reduced, and the rehabilitation time of the patient is shortened.

Provided is an apparatus and component parts of a system for the external fixation of bones. The component parts include fixation plates such as a C-shaped Plate, an N-shaped Plate, a J-shaped Plate, a K-shaped Plate, an I-shaped Plate, a Foot Plate, a Z-shaped Plate and a T-shaped Plate. Two or more fixation plates are configured along an axis, the two or more fixation plates; a plurality of telescoping adjustable struts that connect a first fixation plate along the axis with a second fixation plate of the plurality of fixation plates along the axis, wherein the first and second fixation plates are adjacent plates along the axis; and a plurality of posts, each post connecting two adjacent fixation plates of the plurality of fixation plates along the axis.

The invention relates to an external fixator for limb fractures, and belongs to the field of medical apparatuses. The external fixator comprises reducing fixators, bone needles, telescopic rods, boneneedle fixing rods, bend rod pillars and a jack screw, wherein the bone needle fixing rods are mounted on the reducing fixators; fixing holes are respectively formed in two ends of each of the bone needle fixing rods and are used for allowing the bone needles to be placed and fixed; the bend rod pillars are respectively mounted on the left sides and the right sides of the reducing fixators; the two telescopic rods are respectively connected with the bend rod pillars on the two adjacent reducing fixators; and the telescopic rods are regulated to regulate the relative position of the two adjacent reducing fixators. The external fixator solves the problem that a conventional unilateral external fixation frame system is limited in functions when being used for an orthopedic surgery, and besides, also solves the problems that an annular external fixation frame system is single in functions, complex in structure, high in price and difficult for nursing. Further, the invention provides an orthopaedics unilateral external fixation device which is complete in functions, low in price and easy tor nursing.

The present invention relates to an orthopaedic external fixation needle and particularly to a sleeve external fixation needle for a bone transverse bone moving operation, belongs to orthopaedic external fixation devices, and solves problems that existing operation devices (needing uses of 4-6 external fixation needles and a pair of an external fixation frame) are large in size, large in trauma, low in patient compliance, difficult in later nursing and the like. The sleeve external fixation needle for bone transverse moving operation is characterized in that a main body part of the sleeve external fixation needle is characterized by comprising an inside inner core and an outside sleeve, the inner core inserts into the sleeve to form a sleeve structure, an outer wall of a head end of the sleeve and a head end of the inner core are provided with threads, the sleeve external fixation needle is used for fixing bones, a tail end of the main body part of the sleeve external fixation needle is provided with an adjusting device, the adjusting device is composed of a transmission frame, threads on the outer wall of the sleeve and corresponding nuts, one end of the transmission frame is semi-fixed between the two nuts on the outer wall of the sleeve, the other end of the transmission frame is semi-fixed at a tail end of the inner core, the inner core and the sleeve are driven to move relatively by rotating the nuts on the outer wall of the sleeve, so that a relative position between bone blocks is adjusted. The sleeve external fixation needle is used for fracture fixation, a transverse bone movement can be achieved through 1-2 sleeve external fixation needles, surgical operations are simplified, surgical wounds are reduced, a fear of a patient is relieved, compliance is improved,and postoperative care is simplified.

The invention relates to a tibia fracture reduction external fixing system with a looseness monitoring function, which comprises a fixing needle group and an external fixing frame, the fixing needle group comprises a main fixing needle and at least one side fixing needle, and the external fixing frame comprises a main fixing clamp, a main connecting rod, an adjustable fixing clamp, a side connecting rod and a connecting rod fastening nail. The outer end of each main fixing needle is provided with a main fixing clamp, and all the main fixing clamps are jointly fixed to the main connecting rod through connecting rod fastening nails. One side fixing needle is provided with an adjustable fixing clamp, one main fixing needle is provided with the other adjustable fixing clamp, and the two adjustable fixing clamps are jointly fixed to the side connecting rod through connecting rod fastening nails respectively; and a displacement monitoring alarm mechanism is arranged in the connecting rod fastening nail. According to the invention, higher precision of fracture reduction can be ensured, and the adjustment is also very convenient; when the outer fixing frame looses and accidentally moves, the displacement monitoring and alarming mechanism can sense and send out an alarming signal.

The invention discloses a universal joint device for an Ilizarov hip proximal femur osteotomy external fixing frame, which belongs to the technical field of medical equipment and comprises a rotating shaft, a connecting rod connected with a steel needle fixing rod, a plurality of adjusting bases arranged on the rotating shaft in a sleeving manner and a locking mechanism capable of locking the adjusting bases on the rotating shaft, the connecting rods are hinged to the two ends of the adjusting base through spherical hinge assemblies, and each spherical hinge assembly comprises a universal ball fixedly connected with the corresponding connecting rod and a spherical hinge locking mechanism capable of locking the universal ball to the adjusting base. The universal joint device can serve as a connecting pivot of a steel needle fixing rod in the Ilizarov hip femoral proximal osteotomy external fixing frame, the angle and the deflection direction of the steel needle fixing rod can be flexibly changed, and therefore the universal joint device can actively adapt to the position of a steel needle, the arrangement requirement for the steel needle is lowered, unstressed installation can be achieved, and the safety of the steel needle is improved. The arrangement difficulty of the Ilizarov hip femoral proximal osteotomy external fixing frame is greatly reduced, and the development of related medical operations is promoted.

An external fixation device for fractures of extremities, belonging to the field of medical equipment, the invention includes a reduction fixer, a bone needle, a telescopic rod, a bone needle fixation rod, a curved rod pillar and a top wire, and the bone spicule fixation rod is installed on the reduction fixer On the top, there is a fixing hole at both ends of the bone needle fixing rod. The fixing holes are used to place and fix the bone needle. A curved rod pillar is respectively installed on the left and right sides of the reset fixer, and the two telescopic rods are respectively connected to two adjacent reset fixing rods. The bent rod pillar on the device can adjust the relative position of two adjacent reset fixers by adjusting the telescopic rod. The present invention solves the problem of the limited function of the existing unilateral external fixator system in orthopedic surgery, and also solves the problems of single function, complex structure, high price and difficult nursing care of the annular external fixator system, and further provides a A functional, inexpensive, and easy-care orthopedic unilateral external fixation device.

Disclosed herein are external fixation frames for correcting bone deformities. The external fixation frames include a top fixation ring and a bottom fixation ring coupled to one another by at least two struts. A half ring is coupled to bottom fixation ring. The bottom fixation ring is u-shaped. One or more rocker members may be coupled to the bottom fixation ring. The half ring may be hingedly coupled to the bottom fixation ring such that it can rotate with respect to the bottom fixation ring from a first position to a second position.

The invention discloses a fracture external fixing frame system. The fracture external fixing frame system comprises a fracture external fixing frame which comprises a fixing frame left arm, a fixingframe right arm, a fixed rod and a jackscrew device, wherein one end of the fixing frame left arm and one end of the fixing frame right arm are in sleeved connection and can rotate relatively; the fixed rod is in sleeved connection with the sleeved connection position of the fixing frame left arm and the fixing frame right arm; the other end of the fixing frame left arm and the other end of the fixing frame right arm are hook-shaped and are respectively provided with a fixed sharp claw; the jackscrew device is screwed at the sleeved connection position of the fixing frame left arm and the fixing frame right arm and used for adjusting the relative angle of the fixing frame left arm and the fixing frame right arm; and the fixed rod penetrates through the connecting end of the fixing frame left arm and the fixing frame right arm to be connected with the fixing frame left arm and the fixing frame right arm. The fracture external fixing frame system provided by the invention is small in size, convenient to operate, flexible in fixing mode and fixed position and stable in fixing effect.

The invention discloses a digital control system of an electronic external bone fixator, which mainly comprises a control end and an external bone fixator, an operator part is also connected with the control end, and the control end is mainly connected with the external skeletal fixator through a driving wire. And the control end mainly realizes various control functions by matching a control operation circuit with HMI man-machine interaction. The digital external bone fixator has the beneficial effects that the direct current motor matched with the encoder is used as a control object, the PLC motion controller is used as a control core, the touch screen is matched, automatic adjustment of the length of each electric telescopic rod of the digital external bone fixator is achieved, the tedious operation of manual adjustment during fixation of the external bone fixator is effectively avoided, and the adjusting and using efficiency of the external bone fixing frame is greatly improved, so that the practicability of the system is better, and the intelligent degree is higher.

The invention discloses an external fixator for bone rehabilitation. According to the main points of the technical scheme, the external fixator comprises fixing ring members and telescopic link members, wherein rotational corner connectors are arranged on the circumferential outer side walls of the fixing ring members; each rotational corner connector comprises a fixing ring connecting rod and a link connecting rod; one end of each fixing ring connecting rod is used for being axially and rotationally connected with one corresponding fixing ring member; the other end of each link connecting rodis used for being connected with one corresponding telescopic link member; the rotation axis of rotational connection of each fixing ring connecting rod and the corresponding fixing ring member is kept consistent with the length direction of the fixing ring connecting rod; the length direction of each link connecting rod is set in perpendicular to that of the corresponding fixing ring connectingrod; each telescopic link member comprises link mounting elements which are used for being detachably and fixedly connected with the corresponding link connecting rods; each link mounting element andthe corresponding link connecting rod are in slipping detachable and fixed connection; and the slipping direction between each link mounting element and the corresponding link connecting rod is the length direction of the link connecting rod. The fixator can effectively improve the flexibility when mounted.

The invention discloses a top end one-way adjusting type elastic outer fixing support fixing arm, an outer fixing support comprises an adjusting rod, a stress guide rod, a sliding fit thread sleeve, an elastic device, a fixing rod and a fixing structure for fixing the adjusting rod, the outer fixing support further comprises an adjusting device, and the adjusting device pushes the stress guide rod to move in the axial direction of the stress guide rod. The stress guide rod is located in the adjusting rod, one end of the adjusting rod is in sliding connection with the sliding-fit threaded sleeve, the other end of the adjusting rod is provided with an adjusting device in threaded connection with the adjusting rod, and the sliding-fit threaded sleeve is arranged at one end of the fixing rod in a sleeving mode. When a fractured bone is subjected to axial stress, the bone fracture healing device can stimulate generation of callus at a fractured end, avoid osteoporosis caused by stress shielding of the external fixing frame, accelerate fracture healing, increase the strength of healing sclerotin and effectively prevent delayed healing or non-healing of the fracture.

The invention discloses a multi-angle fixed length-adjustable wartime simple unilateral external fixation frame. The frame comprises intra-bone implantation half needles, an extra-bone external fixation frame rod and a traction extension screw rod, wherein the two ends of the traction extension screw rod are in threaded connection with the extra-bone external fixation frame rod; and a long-strip-shaped hole is formed in the external fixation frame rod in the length direction, the intra-bone implantation half needles are connected with the extra-bone external fixation frame rod at the long-strip-shaped hole, the included angle alpha between at least two intra-bone implantation half needles ranges from 0 degree to 30 degrees, and the included angle is located in the transverse section of the extra-bone external fixation frame rod. The overall length of the length-adjustable multi-angle fixed wartime simple unilateral external fixation frame is adjustable, and the intra-bone implantation half needles can be used for battlefield first aid; operation is easy, carrying is convenient, wound care is facilitated, shortening and angulation malformation of an affected limb can be reduced as much as possible in the early stage of injury, and secondary injury of the broken bone end to peripheral vascular nerves in the carrying process is reduced.