EP0466659A2
Expired / Lapsed
EP
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Apparatus for resecting the femoral and tibial bones for fitting knee articulation prostheses
Assignee: G CREMASCOLI Srl
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Filing: 1991-05-28
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Granted: —
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Expires: 2011-05-28
Abstract
Abstract An apparatus for resecting the femoral and tibial bones for fitting knee articulation prostheses comprises a slide supporting central body (1), therewith a sliding guide (10) for the distal resection of the femoral condyles and a top body (21) for the front femoral resection cooperate. The apparatus further comprises a dihedral body (27) for forming guide slots for the rear femoral resection and for required tapering subsidiary resections. <IMAGE>
Inventors
- 👤 Franco c/o G. CREMASCOLI S.r.l. Ghisellini
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 23:32
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/14; A61B17/15; A61B17/154; A61B17/155; A61B17/157
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
69 words
1- An apparatus for resecting the femoral and tibial bones for fitting knee articulation prostheses to the resected bone,characterized in that said apparatus comprises a slide bearing central body,therewith a sliding guide,for distally resecting the femoral condyles, and a top body,for performing the front femoral resections cooperate,there being moreover provided a dihedral body adapted to form guide slots for making a rear femoral resecting operation and subsidiary tapering resections.
Claim 2
Dependent Claim
69 words
1- An apparatus for resecting the femoral and tibial bones for fitting knee articulation prostheses to the resected bone,characterized in that said apparatus comprises a slide bearing central body,therewith a sliding guide,for distally resecting the femoral condyles, and a top body,for performing the front femoral resections cooperate,there being moreover provided a dihedral body adapted to form guide slots for making a rear femoral resecting operation and subsidiary tapering resections.
Claim 3
Dependent Claim
85 words
2- An apparatus according to claim 1,characterized in that said central body has a substantially parallelepipedal shape and is provided with a transversal throughgoing slot encompassed by a projecting frame,which is open at the bottom thereof and is adapted to define sliding guides for a slide element comprising a rectangular plate forming a base element for a square or rectangular cross-section rod,a hole being formed along said plate and rod extending along an axis slightly slanted with respect to the longitudinal axis of said rod.
Claim 4
Dependent Claim
40 words
3- An apparatus,according to claims 1 and 2,characterized in that on the two sides of said projecting frame there are formed diagonal throughgoing holes and that, on the top wall of said central body,there are formed corresponding end threaded counterbores.
Claim 5
Dependent Claim
94 words
4- An apparatus according to one or more of the preceding claims,characterized in that said sliding guide is provided with a trapezoidal front portion provided with cross throughgoing holes and comprising a plate cantilever wise arranged with respect to a square cross-section rod provided with two longitudinal slots perpendicular to said plate and oppositedly extending with respect to said plate,two side sliding pins as well as a rectangular cross-section central ridge on the axis of which there is provided a counterbore adapted to restrain one end of the stem of an operating screw element.
Claim 6
Dependent Claim
90 words
5- An apparatus according to one or more of the preceding claims,characterized in that with the front portion of said sliding guide a rear portion cooperates,said rear portion also substantially comprising a square cross-section rod provided,at the rear thereof,with a central ridge including a threaded throughgoing hole and mating with a frontal gap adapted to slidably house said ridge of said front portion,said rod,forming said rear portion being moreover provided with corresponding end throughgoing holes extended by bush elements as well as with cross holes therein locking screws are engaged.
Claim 7
Dependent Claim
95 words
6- An apparatus,according to one or more of the preceding claims,characterized in that said top body is provided with a base plate and an abutment lug,including a right angle bent end portion,from said base plate centering pins extending which can be engaged in corresponding seats formed on the top wall of said central body, as well as throughgoing holes for engaging therein corresponding screws engaging in threaded holes formed in said central body,said base plate being moreover provided,at the ends thereof,with bottom ridges adapted to define,with the bearing wall of said central body,a middle slot.
Claim 8
Dependent Claim
74 words
7- An apparatus,according to one or more of the preceding claims,characterized in that said dihedral body comprises a substantially rectangular plate on the top of which there is provided a cantilever perpendicular wall having a beveled edge,through the thickness of said plate,at the central portion whereof there is formed a perimetrical gap,there being provided two throughgoing holes,a middle top slot,upward sloped,two side slots,downward sloped,and two bottom side slots which are perpendicular to said plate.
Claim 9
Dependent Claim
24 words
8- An apparatus,according to one or more of the preceding claims,characterized in that said central body and dihedral body are provided with side handles.
Claim 10
Dependent Claim
57 words
9- An apparatus according to one or more of the preceding claims,characterized in that said apparatus further comprises an endomedullar tibial resection guide having a substantially C shaped guide body and provided,on the bottom leg thereof,with means for coupling a resecting guide and,on the top leg thereof,with a side rod for coupling and guiding an endomedullar nail.
Claim 11
Dependent Claim
44 words
10- An apparatus according to one or more of the preceding claims,characterized in that said bottom leg defines a dovetail guide element therein a resecting guide can be engaged,a bottom screw being moreover provided for locking said resecting guide in said dovetail guide element.
Claim 12
Dependent Claim
59 words
11- An apparatus according to one or more of the preceding claims,characterized in that said side rod is coupled to said top leg by a horizontal and cross pin associated with a driving screw adapted to lock said side rod and drive said side rod in a front-rear direction with respect to the head portion of the tibial bone.
Claim 13
Dependent Claim
41 words
12- An apparatus according to one or more of the preceding claims,characterized in that said apparatus further comprises a top screw associated with said side rod and engaging with said pin for preventing said side rod from turning about said pin.
Claim 14
Dependent Claim
58 words
13- An apparatus according to one or more of the preceding claims,characterized in that said side rod is provided with a throughgoing hole for engaging said endomedullar nail,in said hole a further screw engaging for locking said side rod with respect to said endomedullar nail and preventing said side rod from rotating with respect to said endomedullar nail.
References Cited (Backward Citations)
No citation records indexed.
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