| 摘要 |
The inventors provide a device and method for use to obtain multiple bone grafts using a technically easy, one-step method is provided. The primary site(s) for harvesting these bone grafts, as described herein, is the spinous process. However, any donor site to provide bone graft for any recipient fusion site is conceivable. The principal use disclosed herein would be in fusion procedures of the spine. The device includes a single or double action instrument, which can be manually deployed, or deployed with the assistance of any source of power. The surgeon would deploy the instrument by interfacing the trailing end of the device. the leading end of the device is comprised of a dual arms; one contains a chamber which contains multiple bone cutting edges, and the other arm provides a flattened surface against which the bone cutting edges can be brought. After the instrument is seated at the base of the spinous process, or the selected donor site, it is then deployed as the result of the engagement of the multiple bone cutting edges. The resultant effect is the division of the donor site such as the spinous process into multiple sections. These can then be removed and packed into the selected site of fusion. The inventors contemplate both the use of the device to harvest bone from other locations, as well as the use of the grafts obtained for fusions elsewhere.
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