Bone fixation screw system
First Claim
1. A bone fixation screw system for a bone having first and second sections with an interface there between, the bone fixation screw system comprising comprising:
- a side plate having a first part for placement adjacent the bone second section and a second part angled from the first part providing a barrel, the barrel being adapted for insertion into a transsectionally extending bore into the bone in at least the second section of the bone; and
a lag screw for positional retention of the first section of the bone with respect to the second section of the bone, the lag screw having a first part of a resorbable material for threaded connection of the lag screw within the bore of the bone in at least the first section of the bone, the lag screw having a second part connected with the first part made from a stronger nonresorbable material.
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Accused Products
Abstract
A bone fixation screw system and method of utilization thereof is provided for a bone having first and second sections with a fracture interface there between. A preferred embodiment of the bone fixation screw system includes a side plate having a first part for placement adjacent the bone second section and a second part angled from the first part providing a barrel. The barrel is adapted for insertion into a transsectionally extending bore into the bone in at least the second section of the bone. A lag screw is also provided for positional retention of the first section of the bone with respect to the second section of the bone. The lag screw also has a first part of a resorbable material for threaded connection of the lag screw within the bore of the bone in at least the first section of the bone, the lag screw having a second part connected with the first part made from a stronger nonresorbable material. The present invention also provides a bone screw having a resorbable material for a threaded first part. The bone screw first part is connected to a nonresorbable bone screw second part.
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Citations
20 Claims
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1. A bone fixation screw system for a bone having first and second sections with an interface there between, the bone fixation screw system comprising comprising:
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a side plate having a first part for placement adjacent the bone second section and a second part angled from the first part providing a barrel, the barrel being adapted for insertion into a transsectionally extending bore into the bone in at least the second section of the bone; and a lag screw for positional retention of the first section of the bone with respect to the second section of the bone, the lag screw having a first part of a resorbable material for threaded connection of the lag screw within the bore of the bone in at least the first section of the bone, the lag screw having a second part connected with the first part made from a stronger nonresorbable material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A bone fixation screw system for a bone having first and second sections with an interface there between, the screw system comprising:
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a side plate having a first part for placement adjacent the bone second section and a second part angled from the first part providing a barrel, the barrel being adapted for insertion into a transsectionally extending bore of the bone in at least the second section of the bone; and a lag screw for positional retention of a bone having first and second sections with an interface there between, the lag screw including a first part of a resorbable material for threaded connection of the lag screw within the transsectionally extending bore of the bone in at least the first section of the bone, and the lag screw also having a second part made from a stronger nonresorbable metallic material, the lag screw second part having an elongated shank with a reduced diameter stud at an extreme end surrounded and connected with the first part, the stud having a torsional tongue and groove connection with the lag screw first part for impartation of torque to the lag screw first part, and the stud having a generally annular tongue and groove connection with the lag screw first part to aid axial retention of the lag screw first part and wherein the lag screw shank has an exterior longitudinal flat and the shank can be translated through the side plate barrel.
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16. A method of treating a bone with first and second sections separated by an interface there between with a fixation screw system comprising:
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drilling a transsectionally extending bore through the bone penetrating into the first and second sections; threadingly connecting within the transsectionally extending bore of the first bone section, a lag screw with a first part having a male thread of resorbable material and a lag screw second part connected with the first part of a second stronger nonresorbable material; encircling the lag screw with a barrel of a side plate, the barrel being inserted into the bore of the bone in at least the second section of the bone; and locationally attaching the side plate with the second section of the bone. - View Dependent Claims (17, 18, 19, 20)
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Specification