43 results about "Non fusion" patented technology

A growing rod for mounting between attachment mechanisms that are secured to anatomical structures of a patient having scoliosis. The growing rod includes a base rod having an attachment end, an extendable rod that is translatable relative to the base rod along a longitudinal axis and a housing enclosing at least a portion of the extendable rod therein. A magnet is rotatably mounted within the housing and is enclosed by a top magnet cover and a bottom magnet cover. The magnet includes a first pole and a second pole. A gear reduction mechanism is associated with the magnet and the extendable rod. The gear reduction mechanism reduces an output rotation to the extendable rod relative to an input rotation from the magnet.

A growing rod for mounting between attachment mechanisms that are secured to anatomical structures of a patient having scoliosis. The growing rod includes a base rod having an attachment end, an extendable rod that is translatable relative to the base rod along a longitudinal axis and a housing enclosing at least a portion of the extendable rod therein. A magnet is rotatably mounted within the housing and is enclosed by a top magnet cover and a bottom magnet cover. The magnet includes a first pole and a second pole. A gear reduction mechanism is associated with the magnet and the extendable rod. The gear reduction mechanism reduces an output rotation to the extendable rod relative to an input rotation from the magnet.

Methods and devices that utilize segmental fixation between several adjacent vertebrae, thus allowing each vertebrae to be adjusted independently, are provided. In general, the device includes a spinal anchoring element that is adapted to seat at least one spinal fixation element, and a closure mechanism that is adapted to mate to the spinal anchoring element to lock the at least one spinal fixation element in a fixed position relative to the spinal anchoring element.

A unitary intervertebral device, having no moving components is provided for non-fusion articulation applications. The interbody articulating device allows for limited flexion and rotation between adjacent vertebrae, helping to preserve or restore near-normal motion between adjacent vertebrae. Rotational motion is achieved through one or more protrusions incorporated into the spinal interbody device. In one articulating form, a first protrusion extends perpendicularly from the superior aspect of the disc-shaped interbody device to form a spike or rotational protrusion, while a second protrusion extends axially from the inferior aspect of the interbody device to form a second spike or rotational protrusion. Protrusions preferably extend perpendicular from the apex of both the first and second arcuate articulating surfaces. In another form, a single protrusion extends axially from the superior aspect of a circular-shape of the interbody device to form a spike or anchoring protrusion, while the inferior surface may be slightly rounded and / or comprising a bone-ingrowth promoting surface. In another form, one or both of the first and / or second arcuate surfaces may be highly polished. Numerous planar geometries are described to define various profiles of the disc replacement implant which may be utilized, including irregular Reuleaux polygons. Numerous variations of the disc replacement and methods of use are described. Similarly configured fusion salvage devices are also described.

A spinal interbody or intravertebral device is provided for fusion and non-fusion spinal applications. The spinal interbody device allows for limited motion between adjacent vertebrae to help preserve normal motion between adjacent vertebrae (superior / inferior vertebrae) relative to the implanted spinal interbody device and limited rotational motion of the spinal interbody device, once implanted. Limitation of motion is achieved through one or more protrusions incorporated into the spinal interbody device. The protrusions preferably, but not necessarily, extend radially from a hub or ball-shaped body of the interbody device. In one form, a single protrusion extends radially about the hub of the interbody device to form a continuous band, ring or base about the hub. In this form, portions of the band may extend radially further from the hub than other portions of the band. Preferably, but not necessarily, in this form the band extends radially a greater distance from the hub in the posterior and anterior directions. In another form, a first protrusion extends radially from one side of the hub while a second protrusion extends radially from another side of the hub. Anchoring means may also be provided for attachment to upper and lower vertebrae.

The invention relates to a dynamic non-fusion connector which belongs to the field of medical apparatuses. The dynamic non-fusion connector is matched with spinal screws and used for treating diseases of spinal instability, deformity, spondylolisthesis, spinal canal stenosis, fracture, and the like. The dynamic non-fusion connector comprises a spring shaft (1), a limit sleeve (2), a limit core (3), a stud (4) and a fixed shaft (5) and is characterized in that the left end of the spring shaft (1) adopts a polished rod design and is provided with an internal thread through hole, and the right end of the spring shaft (1) adopts an annular spring structure and is provided with a step hole, and gaps and small circular holes are arranged among rings of the annular spring structure; and a tapered face, a step cylinder surface and a notch are arranged on the outer surface of the limit sleeve (2), and a step through-hole is arranged in the center of the limit sleeve (2). An application method of the dynamic on-fusion connector comprises the following steps of: firstly determining the embedded depth and orientation of the spinal screws and the length of the dynamic non-fusion connector, drilling a hole, holding the spinal screw, embedding into a vertebral body, embedding other spinal screws, then embedding the dynamic non-fusion connector, screwing a top thread in, and compressing the dynamic non-fusion connector to a final locking position so as to realize the dynamic non-fusion fixing of a system.

The invention discloses a non-penetrating laser welding method and a non-penetrating laser welding system. The non-penetrating laser welding method comprises the following steps: firstly, providing a first parent material and a second parent material which are required to be overlapped and welded; secondly, vertically overlapping and clamping the first parent material and the second parent material; thirdly, providing a laser welding system, wherein the laser welding system is provided with a first laser head and a second laser head, and the laser beams which are focused and emitted by the first laser head and the second laser head are arranged side by side in a welding direction and are distributed symmetrically; fourthly, starting the laser welding system, wherein a dual-laser beam which is formed by respectively focusing the first laser head and the second laser head is inclined to radiate the surface of the first parent material to complete a welding process. The invention also discloses a non-penetrating laser welding system. Compared with the prior art, the non-penetrating laser welding method and the non-penetrating laser welding system have a good welding effect, and are simple in process, easy to control and low in cost.