Intramedullary systems, expandable intramedullary nails, expandable anchors, and methods of using the same. The intramedullary system may include an expandable intramedullary nail configured to extend into an intramedullary canal of a long bone and/or one or more expandable anchors configured to extend at an angle transverse to the intramedullary nail. The intramedullary nails and/or anchors may include one or more integrated expansion mechanisms that allow for insertion in a contracted configuration and expansion into a deployed configuration to lock the relative position and prevent axial rotation and translation of the system.

Disclosed are a method for limiting diffusion of wear debris of an in vivo implant and an in vivo implant apparatus with a function of limiting wear debris. An elastomer seal is arranged at a wearing part between implant components that can move relatively and generate wear, such that an outlet for wear debris of the implant is always sealed within a sealing area formed by the seal and the implant components, thereby preventing the wear debris from diffusing outwards. The elastomer seal includes at least one flexible buffer part for reducing or completely offsetting relative motion between the implant components, thereby further reducing wear of a sealing part of the elastomer seal due to the relative motion between the parts. The seal is tightly attached to in vivo implant components, and the in vivo implant is smaller than a force for driving the components to generate relative motion.

The present disclosure provides implantable bone distraction devices and methods of using same to elongate a bone.

An extension drive mechanism which enables the intramedullary nails used in the orthopedic surgery in the bone extension nail systems to extend and shorten in the application area and enables the bone to extend or shorten in a controlled manner.

The present disclosure broadly provides applications of communication at ultrasound frequencies to establish transcutaneous data communication between medical devices located on and/or within a body of a patient, including inter alia: features for adjustable implants including data communication, hermetic containment, and torque amplification features.

The present invention is about an intra-corporal telescopic osteo-distraction device for locking the length of the bone and for providing axial, torsional and bending stability; an extra-corporal force producing device for producing a force for extension causing a lengthening of the intra-corporal device and the bone; a method for bone lengthening and a bone lengthening arrangement utilizing the devices of the invention.

A method of treating scoliosis in a subject includes securing a scoliosis treatment device to first and second locations on the subject's skeletal system, the scoliosis treatment device including a first portion, a second portion moveably mounted relative to the first portion, and an adjustment device disposed on the device and configured to change a distraction force between the first location and the second location, the adjustment device including a rotationally mounted magnetic element configured to move the second portion relative to the first portion in response to rotation of the magnetic element. An external adjustment device is provided external to the subject and is able to adjust the distraction force between the first location and second location.

An intramedullary bone transport nail configured for axial bone segment transport by an externally applied magnetic field includes a nail body defining an internal chamber; locking portions for locking respective ends of the nail body in first and second bone fragments of a long bone, respectively; and a transport carriage assembly that is arranged in an axially movable manner within the internal chamber of the nail body and has an aperture for accommodating a transport bone segment screw for fixing a middle bone segment of the long bone to the bone transport carriage. The nail body defines an elongated longitudinal opening to allow axial motion of the transport bone segment screw as the transport carriage assembly moves axially by rotation of a threaded rod affixed to a magnetic driver. Rotation of the threaded rod is achieved by application of torque to the magnetic driver by a rotating external magnetic field.

A method of changing a bone angle includes creating an osteotomy between a first portion and a second portion of a tibia of a patient; creating a cavity in the tibia by removing bone material along an axis extending in a substantially longitudinal direction from a first point at the tibial plateau to a second point; placing a non-invasively adjustable implant into the cavity, the non-invasively adjustable implant comprising an adjustable actuator having an outer housing and an inner shaft, telescopically disposed in the outer housing, and a driving element configured to be remotely operable to telescopically displace the inner shaft in relation to the outer housing; coupling one of the outer housing or the inner shaft to the first portion of the tibia; coupling the other of the outer housing or the inner shaft to the second portion of the tibia; and remotely operating the driving element to telescopically displace the inner shaft in relation to the outer housing, thus changing an angle between the first portion and second portion of the tibia.

The present invention is about an intra-corporal telescopic osteodistraction device 1 for locking the length of the bone 3 and for providing axial, torsional and bending stability; an extra-corporal force producing device 4a, 4b for producing a force for extension causing a lengthening of the intra-corporal device 1 and the bone 3; a method for bone lengthening and a bone lengthening arrangement utilizing the devices 1 and 4a, 4b of the invention.