Surgery – Instruments – Orthopedic instrumentation
Patent
1996-02-21
1998-04-21
Buiz, Michael
Surgery
Instruments
Orthopedic instrumentation
606 92, 606 93, A61F 228
Patent
active
057412650
ABSTRACT:
A bone canal pressurizer is disclosed which comprises a body made out of a soft foam material. This body has a planar proximal surface and a planar distal surface, with the proximal surface having a greater surface area than the distal surface, and with an inclined side wall extending between the proximal surface and the distal surface. A bore extends through the body, opening on both the proximal surface and the distal surface. This bore is sized so as to have a diameter smaller than the outer diameter of a cement dispenser's nozzle. The entryway to the bore is preferably chamfered about the proximal surface. A rigid plate is fixed to the proximal surface of the soft foam body, and includes a hole extending therethrough. This hole is aligned with the bore extending through the pressurizer's soft foam body, and is sized so as to have a diameter larger than the outer diameter of a cement dispenser's nozzle. The distal surface of the body is sized so as to be small enough to fit within the bone canal of a bone, and the rigid plate is sized so as to be larger than the bone canal of that same bone. A method of using the bone canal pressurizer to deploy cement into a bone canal is also disclosed.
REFERENCES:
patent: 4274163 (1981-06-01), Malcom et al.
patent: 4488549 (1984-12-01), Lee et al.
patent: 4815454 (1989-03-01), Dozier et al.
patent: 4896662 (1990-01-01), Noble
patent: 5061287 (1991-10-01), Feiler
patent: 5501687 (1996-03-01), Willert et al.
patent: 5507749 (1996-04-01), Draenert
Buiz Michael
Woo Julian W.
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