Surgery – Instruments – Orthopedic instrumentation
Patent
1997-02-27
1998-06-23
Lucchesi, Nicholas D.
Surgery
Instruments
Orthopedic instrumentation
433229, 606 79, A61B 1756
Patent
active
057698538
ABSTRACT:
The bone rasp (10) is provided with a rotatable drum-shaped rasp tool (36) with a cylinder wall (62) and a housing (12) provided with a cylindrical reception chamber (20) for the rasp tool (36) and a supply well (34) for bone pieces, extending radially from the reception chamber (20). The cylinder wall (62) of the rasp tool (36) is provided with a plurality of through bores (60) arranged adjacent to each other in several axially extending rows (58). The cylinder wall (62) comprises several teeth (68) respectively arranged between two adjacent through bores (60) and projecting beyond the portions (80) of the cylinder wall (62) located in front of them when viewed in radial extension of the rasp tool (36). The teeth (68), in plan view of the cylinder wall (62), are substantially tapered in V-shape, the tip pointing in rotational direction (70) of the rasp tool (36), and the tips of adjacent teeth (68) are connected, forming a cutting edge (72) with arcuate and pointed sections. The arcuate sections (74) are arranged directly behind the through bores (60) when viewed in rotational direction of the rasp tool (36). The cutting edges (72) of through bore rows (58) succeeding each other in rotational direction (70) of the rasp tool (36) radially project in different lengths beyond the cylinder wall (62).
REFERENCES:
patent: 5342362 (1994-08-01), Kenyon et al.
patent: 5417693 (1995-05-01), Sowden et al.
patent: 5601561 (1997-02-01), Terry et al.
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