Surgery – Instruments – Orthopedic instrumentation
Reexamination Certificate
2000-08-24
2003-09-16
Philogene, Pedro (Department: 3731)
Surgery
Instruments
Orthopedic instrumentation
C606S094000
Reexamination Certificate
active
06620169
ABSTRACT:
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not Applicable.
BACKGROUND OF THE INVENTION
This invention relates to a tool for preparing bone graft material by loading it into multiple tubes that may then be injected into a site needing bone graft material.
Bone graft material is typically harvested from a portion of a patient's body, such as a hip, and are used in repair procedures in another site, such as in fusing adjacent vertebra. Cheung et al, in the British Journal of Oral & Maxillofacial Surgery, Volume 35, pages 267-270 (1997) describe a bone graft condensing syringe system which uses a metal syringe, a plugger and a screw on cap along with a metal filling funnel to provide bone graft. Marx & Wong describe the use of a plastic syringe in J. Oral Maxillofacial Surgery, Volume 45, at pages 988-989 (1987) which compacts the bone graft material. A scalpel is required to cut off the needle end of the syringe to extrude out the graft material. Lambert et al., in Journal of Oral Maxillofacial Surg., pages 773-774 (1994) describe a syringe system employing a vented steel disc at the hub end of the syringe. The syringe is filled with bone, compressed with a plunger and extruded out with a steel rod through the hub which pushes out the disc and bone.
A series of Bonutti patents, U.S. Pat. Nos. 5,329,846; 5,545,222; 5,662,710 and 5,888,219 deal with a bone preparation system that uses a press to remove fluid from human tissue and insert the human tissue back into the person. The tissue may be bone.
The art described in this section is not intended to constitute an admission that any patent, publication or other information referred to herein is “prior art” with respect to this invention, unless specifically designated as such. In addition, this section should not be construed to mean that a search has been made or that no other pertinent information as defined in 37 C.F.R. §1.56(a) exists.
BRIEF SUMMARY OF THE INVENTION
The invention provides a tool into which bone graft material is inserted. A ram in the tool fills tubes with the bone graft material. The filled tubes are then used to deploy bone graft material where needed with a second tool pressing the graft material out of the tubes. The tool and fill tubes provide the surgeon with prefilled tubes of known volume for surgical procedures which may be readily extruded into the surgical site.
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Cheung et al., “A bone graft condensing syringe system for maxillofacial reconstructive surgery”, vol. 35, pp. 267-270 (1997).
Robert E. Marx, and Marke E. Wong, “A Technique for the Compression and Carriage of Autogenous Bone During Bone Grafting Procedures”, vol. 45, at p. 988-989 (1987).
Lambert et al., “Modified Technique for Removal of a Compressed Particulate Bone Graft From a Syringe”, pp. 773-774 (1994).
R. Bilie and K. Korzinek, “Results of Scaphoid Non-Union Treatment by the Matti-Russe Procedure Using Compressed Cancellous Bone,” pp. 134-138, (1987).
Kuslich Stephen D.
Peterson Francis C.
Philogene Pedro
Spineology Group, LLC.
Vidas, Arrett & Steinkraus PA
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