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11 results about "Bone Lengthening" patented technology
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Increase in the longest dimension of a bone to correct anatomical deficiencies, congenital, traumatic, or as a result of disease. The lengthening is not restricted to long bones. The usual surgical methods are internal fixation and distraction.
Electric intramedullary nails for bone lengthening or repositioning
An electrically powered intramedullary nail (1) for bone lengthening or transport comprises: a tubular portion (2) extending along the main axial direction (x) of the intramedullary nail (1); a rod-shaped portion (3) sliding within the tubular portion (2) and along the longitudinal axis (x), including an abutment element (31); an electric motor (4) for driving the rod-shaped portion (3); characterized in that it further comprises: a sleeve (5) inserted into the tubular portion (2) and spaced proximally along the longitudinal axis (x), adapted to form an inner shoulder, which serves as the end of the stroke of the abutment element (31).
Owner:ORTHOFIX SRL
An intramedullary nail system for real-time monitoring of bone lengthening healing status
This invention discloses an intramedullary nail system for real-time monitoring of bone lengthening and healing status, comprising an extendable intramedullary nail body, a signal processing module, a sensing module, and a mobile APP module. The intramedullary nail body includes a hollow proximal main nail and a distal traction nail, which are coaxially sleeved with a clearance fit. The intramedullary nail body contains a power module and a transmission module for driving the distal traction nail to extend and retract axially. The sensing module includes an axial pressure sensor and a callus multimodal sensor. The axial pressure sensor is arranged on the load transmission path inside the proximal main nail to monitor axial tensile load and weight-bearing. The callus multimodal sensor is attached to the outer surface of the proximal main nail at the fracture site to acquire external normal pressure and shear force. The signal processing module is connected to the sensing module to collect and process the signals transmitted by the sensing module and transmit them wirelessly to the APP module. The APP module is used to decouple and visualize the received signals.
Owner:TIANJIN UNIV
An implantable bone lengthening intramedullary nail
The utility model relates to intramedullary nail technical field, especially place formula bone lengthening intramedullary nail, including fixed part and moving part, the inside of fixed part is equipped with accommodating cavity, is equipped with with the in-vivo driven element of in-vitro driving element cooperation use in accommodating cavity, in-vivo driven element is connected transmission rod to one end of moving part close, transmission rod one side close moving part is equipped with at least one speed reducer assembly, speed reducer assembly includes the rotation cylinder of screw connection in the inner wall of accommodating cavity, transmission rod one end is connected drive gear and penetrates into the rotation cylinder inside, drive gear engages several driven gears with the diameter greater than drive gear, the inner tooth ring that is equipped with with driven gear cooperation on the inner wall of rotation cylinder, rotation cylinder is connected in moving part to one end rotation far from in-vivo driven element. By this, the utility model can reduce the wound area on the patient's limbs under the premise of promoting the normal growth of the patient's broken bone, and the operation is simple, convenient to use.
Owner:SHANDONG JUNTAI ANDE MEDICAL TECH CO LTD
Limb orthopedic outer frame
The utility model relates to the technical field of limb orthopedics, in particular to a limb orthopedics outer frame which comprises mounting rings which are symmetrically arranged at intervals, avoiding holes which can penetrate through limbs of a patient are formed in the mounting rings, a plurality of mounting holes used for fixing bone nails are formed in the mounting rings, and a plurality of connecting parts are arranged on the mounting rings in the circumferential direction. A plurality of connecting grooves are formed in the connecting parts, a plurality of telescopic bone extension assemblies connected to the connecting grooves are rotationally connected between the two mounting rings, a protrusion is arranged between every two adjacent connecting grooves in each connecting part, a limiting rod used for limiting the fixing position of the connecting piece is arranged in each connecting groove, and the limiting rods are elastically connected to the protrusions. Therefore, the bone lengthening component can be quickly adjusted, the adjusting efficiency is improved, the bone lengthening component is convenient to install, and the installation time is saved.
Owner:SHANDONG JUNTAI ANDE MEDICAL TECH CO LTD
Powered improved intramedullary nail for bone lengthening or transport
An intramedullary nail (1) for bone lengthening or transport, comprising: a first tubular portion (2) extending along the main axis of the nail (1); a second rod-shaped portion (3) sliding in itself and axially within the first tubular portion (2); an electric motor device (4) for driving the rod-shaped portion (3), inserted within the first tubular portion (2) and comprising electric terminals (48, 49) accessible through a proximal portion of the nail (1); a covering element (9) for covering and protecting the electric terminals (48, 49), through which respective ends (24, 26) of electric wires (18, 19) pass; a spacer (8) for supporting the covering element (9) at a preset distance from the electric terminals.
Owner:ORTHOFIX SRL
Flat plate mechanisms for bone lengthening
Provided herein is an adjustable implant configured to non-invasively guide bone growth in a patient. The adjustable implant includes a first portion configured to couple to a first bone segment and a second portion at least partially disposed within the first portion and configured to couple to a second bone segment. The adjustable implant includes a drive assembly configured to be transcutaneously actuated, and to drive rotation of a gear assembly configured to rotate about a first axis, and drive axial translation of the second portion along a second axis. Non-invasive actuation of the drive assembly therefore causes the adjustable implant to distract or retract along the second axis.
Owner:NUVASIVE SPECIALIZED ORTHOPEDICS INC
Wirelessly operable implant system for providing controlled lengthening of a bone
The present invention discloses a wirelessly operable implant system for providing controlled lengthening of a bone. The wirelessly operable implant system (100) comprises a bone lengthening intramedullary nail (110), an extracorporeal wireless controller (130), and an implantable drive unit (120). The bone lengthening intramedullary nail (110) fixes in intramedullary cavity (16) and its extending elements (111) and (112) fix with different bone segments (14) and (15). The bone lengthening intramedullary nail (110) distracts the bone segments (14) and (15) when provided with input rotational motion to the unit (113) fitted within. This input rotational motion is given with physical connection by extramedullary implant (120) which is intracorporal and extramedullary. The extramedullary implant (120) is operated by an extracorporeal wireless controller (130).
Owner:RAYCURA MEDICAL TECH PTE LTD
High-stability bone extension bridging combined internal fixation device
The utility model provides a high-stability bone extension bridging combined internal fixing device, and belongs to the technical field of bone extension. Comprising a first bone block and a second bone block, the plurality of fixing blocks are respectively arranged on the first bone block and the second bone block; the plurality of guide rods are arranged on the fixed block and are symmetrically arranged at the two ends of the fixed block; the fixing screw is arranged on the fixing block and is used for fixing the fixing block and a bone block; the fixing screw is provided with a screw body and a nut. By arranging the fixing screw, the fine threads at the bottom are beneficial to entering relatively loose sclerotin initially, the contact area and anchoring force with bone tissue can be increased along with the gradual thickening of the threads, and compared with a traditional single-thread screw, the fixing stability in an osteoporotic bone block can be effectively improved; and the loosening risk caused by insufficient friction force is reduced.
Owner:TIANJIN WALKMAN BIOMATERIAL CO LTD
Flat plate mechanisms for bone lengthening
Provided herein is an adjustable implant configured to non-invasively guide bone growth in a patient. The adjustable implant includes a first portion configured to couple to a first bone segment and a second portion at least partially disposed within the first portion and configured to couple to a second bone segment. The adjustable implant includes a drive assembly configured to be transcutaneously actuated, and to drive rotation of a gear assembly configured to rotate about a first axis, and drive axial translation of the second portion along a second axis. Non-invasive actuation of the drive assembly therefore causes the adjustable implant to distract or retract along the second axis.
Owner:NUVASIVE SPECIALIZED ORTHOPEDICS INC
External fixing frame for orthopedics department
Owner:BETTA MEDICAL TECH (WUXI) CO LTD
Bone lengthening device and method of use thereof
ActiveJP7855820B2Internal osteosythesisMechanical/radiation/invasive therapiesBone LengtheningSurgery
The present invention relates to an implantable bone distraction device. The implantable bone distraction device includes an inner rod defining an internal cavity that houses a rotation actuator. The rotation actuator has an output shaft that is disposed at the end of the inner rod and connected to a lead screw that threadably engages a threaded inner surface of the outer rod. Rotating the lead screw converts the rotational motion into linear motion, resulting in telescoping motion of the outer rod relative to the inner rod. The rotational motion is converted into linear motion by components arranged in a parallel configuration, thereby minimizing the overall length of the bone distraction device while maintaining a maximum stroke length. In various embodiments, additional components, such as an electronic circuit board, an electrical or battery power source, may be housed within the internal cavity defined by the inner rod.
Owner:NUVASIVE INC