Intramedullary cavity nail and kit for the treatment of fractures of the hip
First Claim
1. Intramedullary cavity nail for the treatment of femoral fractures, comprising a solid elongate body having a proximal portion (2) with at least one transverse bore for accommodating at least one corresponding screw (9, 10) for stabilizing the femoral neck, joined to a distal portion (3) with at least one distal transverse bore (16) for accommodating at least one diaphysis screw (17) for stabilizing the distal part of the femur, characterized by the fact that said proximal portion (2) has a substantially constant diameter (φ
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p) adapted to be stably anchored in a relatively limited length bore of the femur for reducing blood losses, while said distal portion (3) has a substantially constant diameter (φ
d) which is less than that of said proximal portion (2) for ease of insertion without drilling in the medullary canal of the femur,wherein said proximal and distal portions (2,
3) are substantially rectilinear and form between themselves a predetermined deviation angle (β
) in a lateral plane.
2 Assignments
0 Petitions
Accused Products
Abstract
An intramedullary cavity nail for the treatment of proximal femoral fractures, comprises a solid elongate body with a proximal portion (2) having at least one transverse bore for accommodating a corresponding screw (9, 10) for stabilizing the femoral neck, the proximal portion being joined to a distal portion (3) having at least one distal bore (16) for accommodating at least one diaphysis screw for stabilizing the distal part of the femur. The proximal portion (2) has a substantially constant diameter (φp) adapted to be stably anchored in a relatively limited length bore of the femur for reducing blood losses, while said distal portion (3) has a substantially constant diameter (φd) which is less than that of said proximal portion, for ease of insertion in the medullary canal of the femur without any drilling. The proximal and distal portions (2, 3) are substantially rectilinear and form between themselves a predetermined deviation angle (β) in a lateral plane. The proximal portion (2) has a pair of inclined bores (7, 8) adapted for accommodating respective cephalic screws (9, 10) for the fixing of the femoral head.
A template (20) with provision for angularly keyed engagement to the proximal end of the nail, has alignment bores for stabilized guidance of drill bits with each of the respective transverse bores of the intramedullary nail.
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Citations
19 Claims
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1. Intramedullary cavity nail for the treatment of femoral fractures, comprising a solid elongate body having a proximal portion (2) with at least one transverse bore for accommodating at least one corresponding screw (9, 10) for stabilizing the femoral neck, joined to a distal portion (3) with at least one distal transverse bore (16) for accommodating at least one diaphysis screw (17) for stabilizing the distal part of the femur, characterized by the fact that said proximal portion (2) has a substantially constant diameter (φ
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p) adapted to be stably anchored in a relatively limited length bore of the femur for reducing blood losses, while said distal portion (3) has a substantially constant diameter (φ
d) which is less than that of said proximal portion (2) for ease of insertion without drilling in the medullary canal of the femur,wherein said proximal and distal portions (2,
3) are substantially rectilinear and form between themselves a predetermined deviation angle (β
) in a lateral plane. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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p) adapted to be stably anchored in a relatively limited length bore of the femur for reducing blood losses, while said distal portion (3) has a substantially constant diameter (φ
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8. Intramedullary cavity nail for the treatment of femoral fractures, comprising a solid elongate body having a proximal portion (2) with at least one transverse bore for accommodating at least one corresponding screw (9, 10) for stabilizing the femoral neck, joined to a distal portion (3) with at least one distal transverse bore (16) for accommodating at least one diaphysis screw (17) for stabilizing the distal part of the femur, characterized by the fact that said proximal portion (2) has a substantially constant diameter (φ
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p) adapted to be stably anchored in a relatively limited length bore of the femur for reducing blood losses, while said distal portion (3) has a substantially constant diameter (φ
d) which is less than that of said proximal portion (2) for ease of insertion without drilling in the medullary canal of the femur,wherein said proximal portion (2) has at least two axially spaced transverse bores (7,
8) which are inclined to the axis (α
p) of said proximal portion (2), and which are adapted for accommodating respective cephalic screws (9,
10) for fixation in the femoral head. - View Dependent Claims (9, 10, 11)
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p) adapted to be stably anchored in a relatively limited length bore of the femur for reducing blood losses, while said distal portion (3) has a substantially constant diameter (φ
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12. Intramedullary cavity nail for the treatment of femoral fractures, comprising a solid elongate body having a proximal portion (2) with at least one transverse bore for accommodating at least one corresponding screw (9, 10) for stabilizing the femoral neck, joined to a distal portion (3) with at least one distal transverse bore (16) for accommodating at least one diaphysis screw (17) for stabilizing the distal part of the femur, characterized by the fact that said proximal portion (2) has a substantially constant diameter (φ
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p) adapted to be stably anchored in a relatively limited length bore of the femur for reducing blood losses, while said distal portion (3) has a substantially constant diameter (φ
d) which is less than that of said proximal portion (2) for ease of insertion without drilling in the medullary canal of the femur,wherein a single diaphysis screw (17) for counteracting torsional stresses of the nail is accommodated in a single bore (16) substantially perpendicular to the axis (α
d) of the distal portion (3) at a location of axial offset from said proximal portion (2). - View Dependent Claims (13, 14)
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p) adapted to be stably anchored in a relatively limited length bore of the femur for reducing blood losses, while said distal portion (3) has a substantially constant diameter (φ
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15. Intramedullary cavity nail for the treatment of femoral fractures, comprising a solid elongate body having a proximal portion (2) with at least one transverse bore for accommodating at least one corresponding screw (9, 10) for stabilizing the femoral neck, coined to a distal portion (3) with at least one distal transverse bore (16) for accommodating at least one diaphysis screw (17) for stabilizing the distal part of the femur, characterized by the fact that said proximal portion (2) has a substantially constant diameter (φ
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p) adapted to be stably anchored in a relatively limited length bore of the femur for reducing blood losses, while said distal portion (3) has a substantially constant diameter (φ
d) which is less than that of said proximal portion (2) for ease of insertion without drilling in the medullary canal of the femur,wherein said proximal portion (2) has, near its free end, a threaded seat (5) for a connection pin (26) for connection to a drilling template (20) arranged in the principal plane of the nail. - View Dependent Claims (16, 17, 18, 19)
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p) adapted to be stably anchored in a relatively limited length bore of the femur for reducing blood losses, while said distal portion (3) has a substantially constant diameter (φ
Specification