Spinal implant device
OwnerDaniel Dongwahn Leeinventor
Life of this patent
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Abstract
The present specification contemplates a spinal implant device that goes into, for example, a corpectomy defect in any part of the spine. In one aspect, the device is substantially tubular and is comprised of two hollow rods that coaxially slide on one another. The device can thus then expand in length and can be locked or fixed at a particular length. The device is hollow to configure a malleable trocar to be placed into the device. With this trocar, polymethymethacrylate (PMMA) can be injected and packed into the vertebral body cephlad and caudad. Finally the device can be locked at a desired length by crimping it or locking it using other fastening means.
Claims15
A spinal implant device for implanting at a site of a target vertebral body between a first adjacent vertebral body and a second adjacent vertebral body comprising:
- a first rod;
- a first tip connected to said first rod, said first tip having a proximal end having a width substantially the same as a width of said first rod where said first tip proximal end connects to said first rod, said first tip having a distal end having a width narrower than the first tip proximal end width, the first tip distal end being configured for piercing into the first adjacent vertebral body;
- a first port in the first rod and configured to pass a bone cement to a channel of the first rod;
- a second rod coaxially slidable within and in relation to said first rod;
- a second tip connected to said second rod, said second tip having a proximal end having a width substantially the same as a width of said second rod where said second tip proximal end connects to said second rod, said second tip having a distal end having a width narrower than the second tip proximal end width, the second tip distal end being configured for piercing into the second adjacent vertebral body;
- a second port in the second rod and configured to pass the bone cement to a channel of the second rod, when the first and second ports are in registration;
- and
- the first and second rod channels each being configured for flowing the bone cement through at least one of said tips.
A spinal implant for implantation between a first adjacent vertebral body and a second adjacent vertebral body, comprising:
- a first rigid rod;
- a first tip connected to said first rigid rod, a width of said first tip being the same as a width of said first rigid rod where said first tip connects to said first rod, said first tip configured for piercing into the first adjacent vertebral body;
- a second rigid rod coaxially slidable within and in relation to said first rigid rod;
- a second tip connected to said second rigid rod, a width of said second tip being the same as a width of said second rigid rod where said second tip connects to said second rigid rod, said second tip configured for piercing into the second adjacent vertebral body;
- at least one of said rods comprising a channel in communication with said tip of said at least one of said rods;
- and
- a bone cement disposed between (i) said first tip where it pierces into said first adjacent vertebral body and (ii) said tip where it pierces into said second adjacent vertebral body, the bone cement surrounding at least a portion of said first rigid rod and said second rigid rod, said rods providing reinforcement to said bone cement between said first tip and said second tip;
- wherein said first rod and second rod have a diameter smaller than a length of said spinal implant.
Dependencies are inferred from the claim text.