109 results about "LONG BONE FRACTURE" patented technology

An intramedullary nail for treating long bone fractures. The nail includes a proximal portion that may have a plurality of segments. The segments may be rotatable 360 degrees about a longitudinal axis of the nail such that the position of bone screw openings in the segments can be adjusted to a desired orientation. Locking rings or other locking mechanisms may be provided between the segments to lock the segments in place and allow the segments to be unlocked for readjustment of the position of the segments. The bone screw openings may be configured to allow further angular adjustment of the bone screws with respect to the longitudinal axis of the nail. Inserts may be placed within the bone screw openings to support the bone screws in position.

A universal modular external fixation system for immobilizing bone fragments in long bone fractures. The universal modular external fixation system includes a frame assembly comprising a plurality of pins designed to be coupled to various portions of a fractured bone. The external sections of the pins are fixated to a variety of different coupling devices designed to attach to a series of connecting bars along the length of the fractured bone. A plurality of connecting members interconnect the connecting bars thereby securing the pins and thus the bone sections to aid in proper healing of the fracture(s).

This invention relates generally to devices, systems and methods for the internal fixation of bone fractures, and particularly, to intramedullary fracture fixation devices such as those used in, for example, the treatment of long bone fractures. An IM rod preferably is provided with multiple curved sections in different planes preferably designed to conform with the long bones of a patient, both during insertion and in the rod's final position in the long bone. In addition, the overlap of portions of the curved sections results in a co-planar curvature of portions of the IM rod which assist in the insertion process by guiding the proper rotation of the IM rod as it is inserted into the bone. Spiraling flutes extending down the distal portion of the rod also assist in properly guiding and orienting the rod about its longitudinal axis during insertion such that the appropriate segment of the curved rod conforms with the appropriate portion of the long bone at the appropriate place.

An implant assembly of flexible nails (19) for fractures of long bones comprises of a straight universal length flexible nails having properties of ductility as 15% to 25% of elongation of nail and ultimate tensile strength of 600 to 800 Mega Pascal on testing, having an identical pathfinder blunt conical tip (20) at both ends, an optional proximal fixation device (27) with optional plural holes for interlocking screws (28) to be used in combination with said flexible nails having peripheral equally spaced plural grooves deep less than diameter of one said flexible nail, a end cap with plural holes to be used in combination with said proximal fixation device to anchor cut hooked ends of said flexible nails and a tool plier_knurler cum cutter temporarily applied when said flexible nails are alone in use.

An intramedullary nail has a proximal part for engagement with a proximal bone fragment and a distal part for engagement with a distal bone fragment. A motion assembly interconnects the parts and allows limited axial relative motion of the proximal and distal parts. This limited axial motion provides micromotion and in some embodiments also dynamization. The nail may comprise a stem for fastening to one bone fragment and an insert within the stem for fastening to the other bone fragment, the insert being adapted to guide insertion of a bone screw through the stem and to prevent relative rotation of the distal and proximal bone fragments. The motion assembly may include spring bias and / or damping means between the parts, possibly including one or more Belleville washers.

This invention is directed to methods for treating conditions which present with low bone mass in a patient in need thereof using continuous combination therapy with a synergistically effective combination of an EP4 receptor selective agonist or a pharmaceutically acceptable salt thereof, such as 5-(3-{2S-[3R-hydroxy-4-(3-trifluoromethyl-phenyl)-butyl]-5-oxo-pyrrolidin-1-yl}-propyl)-thiophene-2-carboxylic acid or a pharmaceutically acceptable salt thereof; and an estrogen or a pharmaceutically effective salt thereof, The present methods are useful for treating conditions that present with low bone mass including osteoporosis, osteotomy, osteoporotic fracture, childhood idiopathic bone loss, periodontitis and low bone mass and for enhancing bone healing following facial reconstruction, maxillary reconstruction or mandibular reconstruction, inducing vertebral synostosis, enhancing long bone extension, enhancing the healing rate of a bone graft or a long bone fracture or enhancing prosthetic ingrowth in a patient in need thereof.

This invention relates generally to systems for the internal fixation of bone fractures, and particularly, to equipment associated with the insertion of intramedullary fracture fixation devices such as those used in the treatment of long bone fractures, such as for example fractures of the femur, tibia, humerus, etc. An implant assembly device of the present invention may comprise a handle, a shaft with a first end and a second end, and an elongated rod extending from the shaft. The first end of the shaft is connected to the handle and the second end of the shaft is configured to engage the head of a connecting screw. The device can be held with one hand while the various components are placed one by one into their proper position onto the rod, leaving the other hand free to manipulate the other components.

This invention relates generally to devices, systems and methods for the internal fixation of bone fractures, and particularly, to intramedullary fracture fixation devices such as those used in, for example, the treatment of long bone fractures. An IM rod preferably is provided with multiple curved sections in different planes preferably designed to conform with the long bones of a patient, both during insertion and in the rod's final position in the long bone. In addition, the overlap of portions of the curved sections results in a co-planar curvature of portions of the IM rod which assist in the insertion process by guiding the proper rotation of the IM rod as it is inserted into the bone. Spiraling flutes extending down the distal portion of the rod also assist in properly guiding and orienting the rod about its longitudinal axis during insertion such that the appropriate segment of the curved rod conforms with the appropriate portion of the long bone at the appropriate place.

An apparatus and method for treating a long bone fracture in the limb of an animal wherein a non-invasive technique is provided for intermittently inducing a shortening in length of the skeletal musculature surrounding the long bone, whereby a compressive force may be intermittently applied to the fractured bone. Suitably a radial inward force is applied substantially fully around the circumference to the limb, by an inflatable cuff or sleeve, that is transmitted to the surrounding muscles. Alternatively, electrical signals cause active contraction of the musculature. The treatment may include the application of about 55 to 65 compressions each day for at least 10 days, and commencing within about 7 days of the fracture being sustained. The compressions, applied with frequency in the range of 0.05 Hz to 2 Hz, are desirably just short of that which produces fracture site pain and the intensity of the compressions may be increased between treatment sessions, consistent with heating.

An intramedullary nail for treating long bone fractures. The nail includes a proximal portion that may have a plurality of segments. The segments may be rotatable 360 degrees about a longitudinal axis of the nail such that the position of bone screw openings in the segments can be adjusted to a desired orientation. Locking rings or other locking mechanisms may be provided between the segments to lock the segments in place and allow the segments to be unlocked for readjustment of the position of the segments. The bone screw openings may be configured to allow further angular adjustment of the bone screws with respect to the longitudinal axis of the nail. Inserts may be placed within the bone screw openings to support the bone screws in position.

An intramedullary nail for fixation and stabilization of a fractured bone that also allows for a controlled amount of longitudinal motion at the fracture site to encourage bone remodeling and healing is described. The intramedullary nail has a proximal portion and a distal portion that are coupled together in a manner by a biasing assembly that provides for a controlled movement of the proximal and distal portions relative to each other so that when a patient puts pressure on the bone, such as when walking, the fracture site compresses and the bone ends move together, and when the pressure is released from the bone, the bone ends are biased apart by a controlled amount.

The invention discloses a detachable long bone reduction robot. The detachable long bone reduction robot comprises a fixing mechanism and a reduction mechanism which are connected with or separated from each other, wherein the fixing mechanism comprises two groups of same fixing units which are connected with or separated from each other via two same connecting plates (1); the reduction mechanism is provided with a small annular platform (11), a large annular platform (12), twelve universal hinges (13) and six driving rods (14); the small annular platform (11) is connected with a bottom plate (2) and the universal hinges (13); the universal hinges (13) are connected with the driving rods (14); the universal hinges (13) are connected with the large annular platform (12); the large annular platform (12) is connected with the bottom plate (2). Due to the adoption of a parallel mechanism of six degrees of freedom, the detachable long bone reduction robot has the advantages of high accuracy, high loading capacity, high rigidity, compact structure and the like; the detachable long bone reduction robot is applied to long bone fracture reduction, is used for replacing doctor operation, and contributes to increasing the reduction accuracy, reducing operation wounds and lowering the probability of operative infection.

A computer assisted surgery system is described for assisting a surgeon in aligning a drill with the interlocking holes of an implanted intramedullary (IM) rod used for fixation of long bone fractures. With the IM rod inserted, a localizing device measures the pose of a tracked adapter attached to the rod's exposed end. Approximate AP and lateral fluoroscopic x-ray images are acquired of the end of the rod with the interlocking holes. Image processing algorithms determine the actual position of the rod and calculate an adjustment to the pose of the tracked adapter and IM rod. Using the adjusted pose information, the system displays, in three roughly orthogonal views, a representation of the drill trajectory relative to the images of the IM rod and relative to a graphic representation of the IM rod.

A device is provided for the treatment of long bone fractures. The device is affixable to the long bone, providing structural stability to the long bone and the bone fracture. Upon fixation to the long bone, the device substantial prevents movement of the bone fracture when the long bone is subjected to compressive and tensile forces. Additionally, the device substantially prevents movement of the bone fracture when the long bone is subjected to torsional forces.

The invention relates to an intramedullary linkage device for treatment of peri-prosthetic long bone fractures, system for long bone fracture treatment in the setting of pre-existing intramedullary implant using an intramedullary linkage device and intramedullary fracture fixation device, and methods of treating peri-prosthetic long bone fracture in the setting of pre-existing intramedullary implant using an intramedullary linkage device and intramedullary fracture fixation device.

The invention discloses a long bone resetting robot in series-parallel connection, which comprises a serial connection part and a parallel connection part, wherein the serial connection part comprises a near-end fixing mechanism and a far-end fixing mechanism which are connected or disconnected through a positioning rod; each of the near-end fixing mechanism and the far-end fixing mechanism comprises a fixing plate, a locking bolt, a connecting rod, a connecting rod mounting base, a bracket rod and a latch clamping mechanism; the latch clamping mechanism comprises a connecting bolt and a latch; the parallel connection part comprises a far-end platform panel, a far-end platform connecting plate, a far-end platform pressing plate, a near-end platform panel, a near-end platform connecting plate, a near-end platform pressing plate and a stretching rod mechanism; and the stretching rod mechanism comprises a connecting hinge, a sleeve and a connecting rod. The long bone resetting robot in series-parallel connection is mainly used for realizing a function of assisting the resetting of long bone fracture by the robot under a closed condition. The long bone resetting robot in series-parallel connection has the characteristics of flexible mechanism, large work space, convenience in operation, and the like, and has an excellent application prospect.

The invention relates to a robot-assistance reduction system for the long bone fracture. The system is composed of a surgical bed, a broken bone near-end fixing mechanism, a broken bone far-end clamping mechanism, a reduction robot and a control box; the bottom face of a static platform of the reduction robot is in threaded connection with a lifting table of the control box, a connection plate ofthe broken bone far-end clamping mechanism is in threaded connection with a dynamic platform of the reduction robot, the broken bone far-end clamping mechanism fixes the broken bone far end through two steel needles, the broken bone near-end fixing mechanism is firmly fixed to the surgical bed through bolts, the broken bone near end is placed on the surgical bed, and the broken bone near-end fixing mechanism fixes the broken bone near end through two steel needles. According to the robot-assistance reduction system, the broken bone near end of a patient can be fixed, the broken bone far end ofthe patient can be clamped, precise reduction operation can be achieved, operation is intelligentized, the contact part is easy to disassemble, the structural design is compact, the system is suitable for the long bone fracture reduction operation, and the fracture reduction precision and working efficiency of doctors can be improved.

The invention relates generally to orthopaedic implants, and more particularly to orthopaedic implants having data acquisition capabilities and their use in monitoring and diagnosing fracture healing. RSA is also disclosed as a method for measuring inter-fragmentary movement in long bone fractures in order to confirm whether the fracture is reduced and for detecting changes in stiffness of the healing callus.

The invention discloses a simulation system for long bone fracture healing based on tissue differentiation, and relates to the field of biomedical engineering. The simulation system is used for predicting the complicated process of the fracture healing and searching for the optimal scheme for the fracture healing. The system comprises a fracture area geometric modeling module, a fracture area biomechanics finite element analysis module, a callus unit tissue differentiation module and a program determination judging module. The fracture area geometric modeling module is used for establishing a three-dimensional geometric model of the fracture area; the fracture area biomechanics finite element analysis module is used for conducting finite element analysis on the established three-dimensional geometric model to obtain unit mechanical stimulation; the unit tissue differentiation module is used for simulating tissue differentiation and making the content of each tissue in the unit be updated; the program determination judging module is used for judging whether the program is determined or not. According to the simulation system for the long bone fracture healing based on the tissue differentiation, the fracture area is regarded as a diphasic porous elastic model, the fracture healing process can be more accurately simulated, and the system provides beneficial help for searching for the optimal scheme for the fracture healing.

The invention discloses a long bone fracture repositioning device, which comprises a proximal end support frame, a distal end support frame, quick drawing extension rods, steel needle fixing clamps and steel needles, wherein the quick drawing extension rods are connected between the proximal end support frame and the distal end support frame, the steel needle fixing clamps are connected to the proximal end support frame and the distal end support frame, the steel needles are clamped by the steel needle fixing clamps, the proximal end support frame and the distal end support frame are same in structure and respectively comprise a transverse chute type repositioning slide plate and two fixed gliding hole plates which are connected to the chute type repositioning slide plate, one surface of each chute type repositioning slide plate is provided with a transverse guide sliding chute, a transverse guide long hole is formed between the bottom of the guide sliding chute and the other surface of the chute type repositioning slide plate, the fixed gliding hole plates are provided with holes for connecting the steel needle fixing clamps, the fixed gliding hole plates are further provided with positioning bulges which are matched with the guide sliding chutes and can slide along the guide sliding chutes. The long bone fracture repositioning device disclosed by the invention is simple in structure, the minimally invasive idea is enhanced, the excellent rate of repositioning is improved, and requirements of fracture repositioning and various malformation correcting can be met to the maximum extent.

The invention relates to an ectosteal reduction device, in particular to a combined ectosteal reduction device. The purpose is to solve the problems that as existing four limb long bone fracture portions are manually handled, labor intensity is high, handling time is long, the alignment line is inaccurate and short of standards, the fracture setting effect is poor, postoperation fracture is prone to be unaligned, and bones are prone to nonunion. Multiple sliding bases (B) are installed at the outer side of a first rotating ring (5) and the outer side of a second rotating ring (6) respectively, the sliding bases (B) located at the outer side of the first rotating ring (5) and the outer side of the second rotating ring (6) are arranged oppositely, and multiple mechanical hands (C) are oppositely symmetrically installed on two slide-up rods (7) and two slide-down rods (8). A lifting support plate (A), the sliding bases (B) and the mechanical hands (C) are used for positioning and clamping the fracture portion. The combined ectosteal reduction device is suitable for ectosteal reduction and alignment for four limb long bones.

The invention relates to a route planning method for robot assisted fracture reduction. A reduction route planning method of remote fracture end posture adjustment and double-plane collision prevention based on an A* algorithm is employed. In software mimics and Geomagic studio, fracture deviation parameters are confirmed based on an uninjured side image matching method, and fracture reduction route planning based on the A* algorithm is implemented in two different coordinate planes respectively. By adopting the fracture reduction route planning method provided by the invention, large-amplitude traction of a remote end and collision of the remote fracture end with surrounding tissue in reduction can be effectively avoided, and fracture reduction operation which is short in time, high in precision and safe in collision prevention can be achieved. The method has the advantages of being simple, safe, effective and the like, is applicable to robot assisted fracture reduction operations oflong bone such as thighbone and tibiae, and is capable of improving precision and security of fracture reduction operation, improving reduction efficiency and alleviating the working intensity of doctors.

A device is provided for the treatment of long bone fractures. The device is affixable to the long bone, providing structural stability to the long bone and the bone fracture. Upon fixation to the long bone, the device substantial prevents movement of the bone fracture when the long bone is subjected to compressive and tensile forces. Additionally, the device substantially prevents movement of the bone fracture when the long bone is subjected to torsional forces.

The invention relates to the fracture restorer technical field, and specifically relates to a combined type fracture restorer; the left cavity of a nut is screwed with a forward spinning screw rod; the right cavity of the nut is screwed with a backward spinning screw rod; a compaction rod is plugged in a second through hole; the top and bottom of a first press block are respectively connected with a boss; one side, far away from the second through hole, of the boss is connected with a third straight rod; the first press block and a second press block are arranged on two sides of a Kirschner wire. The combined type fracture restorer can be freely mounted / dismounted according to needs, can restore long bone fractures and arms and legs surrounding fractures, and different parts can be combined so as to realize long bone linear mode restoration and joint surrounding fracture right angle mode restoration; the combined type fracture restorer is simple and easy to operate, and needs no special training; the parts are simple in design and easy to use, and no special training is needed; the combined type fracture restorer is low in cost, and suitable for primary hospitals.

A compression splint is provided for reduction, compression and stabilization of spinal, pelvic, and long bone fractures. The compression splint includes a plurality of plates selectively disposed at a plurality of positions of a fracture site; a plurality of inflatable cushions, each cushion positioned between respective plates of the plurality of plates and the fracture site; and a support means for supporting the plurality of plates and plurality of cushions compressively against the fracture site in three dimensions, Additionally, the plates of the compression splint can be adjusted, removed or additional plates added to further customize the compressive force applied to the fracture site.

An intramedullary nail for fixation and stabilization of a fractured bone that also allows for a controlled amount of longitudinal motion at the fracture site to encourage bone remodeling and healing is described. The intramedullary nail has a proximal portion and a distal portion that are coupled together in a manner by a biasing assembly that provides for a controlled movement of the proximal and distal portions relative to each other so that when a patient puts pressure on the bone, such as when walking, the fracture site compresses and the bone ends move together, and when the pressure is released from the bone, the bone ends are biased apart by a controlled amount.