摘要:
A cannula assembly for providing percutaneous access in minimally invasive spinal surgeries, includes an outer cannula, a nerve probe dilator and a multistage dilator system comprising a first dilator, a second dilator, a third dilator and a fourth dilator. The outer cannula and the dilators are slidable relative to each other and are arranged sequentially so that the fourth dilator surrounds the nerve probe dilator, the third dilator slides over a surface of the fourth dilator, the second dilator slides over a surface of the third dilator, the first dilator slides over a surface of the second dilator, and the outer cannula surrounds the first dilator.
摘要:
A cannula assembly for providing percutaneous access in minimally invasive spinal surgeries, includes an outer cannula, a nerve probe dilator and a multistage dilator system comprising a first dilator, a second dilator, a third dilator and a fourth dilator. The outer cannula and the dilators are slidable relative to each other and are arranged sequentially so that the fourth dilator surrounds the nerve probe dilator, the third dilator slides over a surface of the fourth dilator, the second dilator slides over a surface of the third dilator, the first dilator slides over a surface of the second dilator, and the outer cannula surrounds the first dilator.
摘要:
A spinal fixation and fusion assembly includes a bone anchoring member, a cylindrical rod and a cap. The bone anchoring member comprises an elongated body that is made entirely of bone type material. The elongated body includes a main shaft, a conical shaped distal end, a flared out proximal end, and a through-opening extending along an axis from the proximal end to the distal end. The cylindrical rod is shaped and dimensioned to be received within the through-opening and is made entirely of metal. The cap is made entirely of metal and is attached to a proximal end of the cylindrical rod.
摘要:
A spinal stabilization implant assembly includes a first cervical stabilization plate comprising an elongated body having a top portion and a bottom portion, and a second cervical stabilization plate comprising an elongated body having a top portion and a bottom portion. The bottom portion of the first cervical stabilization plate is attached to a first vertebra and the top portion of the second stabilization plate is stacked end-to-end below the bottom portion of the first cervical stabilization plate and is attached to the same first vertebra. The top portion of the first cervical stabilization plate is attached to a second vertebra, and the bottom portion of the second stabilization plate is attached to a third vertebra. The second vertebra is superior to the first vertebra, and the third vertebra is inferior to the first vertebra.
摘要:
An implantable assembly for stabilization of two adjacent spinous processes in a spinal column includes an elongated first component extending along a first axis, an elongated second component extending along a second axis, a hub spacer, means for inserting and securing the hub spacer transversely through the interspinous ligament separating the first and second spinous processes and means for clamping and securing first and second spinous processes of first and second adjacent vertebras, respectively, between the first and second components. The first and second components are arranged opposite and parallel to each other and are separated by the hub spacer.
摘要:
An improved spinous process fixation implant assembly 50 includes a spinous process fixation implant 100 and an interspinous spacer implant 200. The spinous process fixation implant 100 includes elongated first and second components 110, 120, that are arranged opposite and parallel to each other. First and second spinous processes 90a, 90b of first and second adjacent vertebrae 80a, 80b are clamped between the first and second components 110, 120, respectively, and are separated by the interspinous spacer implant 200. The interspinous spacer implant 200 may be inserted between the spinous processes of adjacent vertebrae from two different directions.
摘要:
An implantable assembly for stabilization of two adjacent spinous processes in a spinal column includes an elongated first component extending along a first axis, an elongated second component extending along a second axis, a hub spacer, means for inserting and securing the hub spacer transversely through the interspinous ligament separating the first and second spinous processes and means for clamping and securing first and second spinous processes of first and second adjacent vertebras, respectively, between the first and second components. The first and second components are arranged opposite and parallel to each other and are separated by the hub spacer.
摘要:
An improved spinous process fixation implant assembly 50 includes a spinous process fixation implant 100 and an interspinous spacer implant 200. The spinous process fixation implant 100 includes elongated first and second components 110, 120, that are arranged opposite and parallel to each other. First and second spinous processes 90a, 90b of first and second adjacent vertebrae 80a, 80b are clamped between the first and second components 110, 120, respectively, and are separated by the interspinous spacer implant 200. The interspinous spacer implant 200 may be inserted between the spinous processes of adjacent vertebrae from two different directions.
摘要:
A system for attaching first and second fixation elements at a predetermined angle relative to each other to first and second locations of a vertebra, respectively includes a first guide wire configured to be inserted into the first location of the vertebra, an angular guide system comprising first and second guide arms configured to be set at the predetermined angle relative to each other and the first guide arm is configured to be inserted over the first guide wire and a second guide wire configured to be inserted through the second guide arm into the second location of the vertebra. The second guide wire includes first and second members configured to pivot relative to each other.