Intravertebral widening device, injection device, and kit and method for kyphoplasty

Abstract

An intravertebral widening device (4) extends from a proximal end (8) to a distal end (10) along an extension axis (X), said distal end (10) having an elastically deformable element (56) suitable to pass from a relaxed configuration for placing the distal end (10) within a vertebral body (6) to a deformed configuration for forming a cavity within said vertebral body (6). The elastically deformable element (56) comprises at least one tab (60) having, along the longitudinal extension thereof, a varying thickness relative to a radial direction incident with said extension axis (X) and contained in a perpendicular plane to said extension axis (X), such as to vary the stiffness of at least one tab (60) along the extension thereof.

Description

technical field

[0001] The invention relates to an expansion device of the spinal cavity, especially an expansion device suitable for Kyphoplasty.

[0002] The invention also relates to an injection device for kyphoplasty, which is suitable for injecting liquid cement into the vertebral body for repairing the vertebral body.

[0003] The invention also relates to a kit of equipment for kyphoplasty and related methods of use. Background technique

[0004] Expansion devices known for use in spinal lumens are inserted into the vertebral body in a relaxed configuration and then expanded to an expanded configuration to restore the shape of the vertebral body to create a suitable cavity within the vertebral body, followed by Inject into this cavity, for example, various glues, small pieces of bone, or bone fillers.

[0005] Known expansion devices do not ensure controlled expansion within the vertebral body, ie they are not suitable for providing a three-dimensional cavity of co...

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