Surgery – Instruments – Orthopedic instrumentation
Reexamination Certificate
2001-09-28
2003-06-24
Philogene, Pedro (Department: 3732)
Surgery
Instruments
Orthopedic instrumentation
C606S094000
Reexamination Certificate
active
06582438
ABSTRACT:
BACKGROUND OF THE INVENTION
Various surgical bone insert tools are currently available to insert bone graft material within open fractures and large wounds within bones during orthopedic surgery to induce bone formation in fractures and fusions.
One method for delivering bone graft to a receptor site utilizing a hollow cylindrical cutter and a solid inner cylindrical plunger is found in U.S. Pat. No. 5,152,763 entitled “Method for Grafting Bone”.
A more recent method is found in U.S. Pat. No. 6,045,555 entitled “Bone Graft Delivery System and Method”. This patent discloses a hollow cylindrical cutter and a solid inner cylindrical plunger. The cutter has a cutting end and a grasping end, with the cutter having a cutting end being tapered to a sharp edge for cutting the bone graft from the donor site.
The use of bone graft insert materials in the form of thick putty-like demineralized bone, such as Grafton, which is a registered trademark of Osteotech Inc. for human bone processed into liquid gels and pastes for use in musculoskeletal surgery, impedes the use of such cylindrical insert tools because of the difficulty involved in loading the gels and pastes into the cylinders.
One purpose of the instant invention, accordingly, is to describe a simple effective means for loading the bone graft insert paste material into a cylindrical insert tool for use in bone graft insert surgery.
SUMMARY OF THE INVENTION
A surgical bone graft outer tool in the form of a three piece bone graft inserter includes a pair of concentric cylinders having elongated apertures formed in the side walls of the cylinders and a plunger. The bone graft material is introduced through the apertures then one of the cylinders is rotated to retain the graft material within the cylinders. The plunger is advanced to force the graft material through the cylinders to within the graft insert site.
REFERENCES:
patent: 4751921 (1988-06-01), Park
patent: 6093170 (2000-07-01), Hsu et al.
patent: 6142998 (2000-11-01), Smith et al.
patent: 6319233 (2001-11-01), Jansen et al.
patent: 6383190 (2002-05-01), Preissman
patent: 6423033 (2002-07-01), Tsai
IMP Inc.
Philogene Pedro
LandOfFree
Bone graft inserter device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bone graft inserter device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bone graft inserter device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3152020