Screws of cortical bone and method of manufacture thereof
First Claim
1. An apparatus for locking bone screws formed of cortical bone for use in the human body to an implant having a screw hole for receiving at least a portion of a screw therethrough, said apparatus comprising:
- at least one bone screw formed substantially of cortical bone of a single cortical thickness, said screw having a leading end, a trailing end opposite said leading end, and a shaft therebetween, said shaft having a mid-longitudinal axis and a length, a thread extending from said shaft along at least a portion of its length, said thread having an outer diameter dimensioned to pass through the screw hole in the implant, said screw having an enlarged portion proximate said trailing end with a dimension transverse to the mid-longitudinal axis of said shaft greater than said outer diameter of said thread, said enlarged portion configured to prevent said head from passing through the screw hole in the implant; and
a screw lock formed substantially of cortical bone configured to cooperatively engage at least a portion of the implant so as to prevent said screw from linear motion along the mid-longitudinal axis of said shaft in a direction opposite to the direction of insertion when said screw is inserted through the screw hole to attach the implant to a bone portion of the human body.
2 Assignments
0 Petitions
Accused Products
Abstract
A screw formed of cortical bone for use in the human body with an implant having a screw hole for receiving at least a portion of a screw therethrough, includes a shaft with a thread along at least a portion of its length. The thread has an outer diameter dimensioned to pass through the screw hole in the implant. The trailing end of the screw is configured to cooperatively engage at least a portion of the screw hole of the implant so as to prevent the screw from linear motion along the mid-longitudinal axis of the shaft in a direction opposite to the direction of insertion when the screw is threaded through the screw hole to attach the implant to a bone portion of the human body. The screw is formed substantially of cortical bone of a single cortical thickness.
284 Citations
97 Claims
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1. An apparatus for locking bone screws formed of cortical bone for use in the human body to an implant having a screw hole for receiving at least a portion of a screw therethrough, said apparatus comprising:
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at least one bone screw formed substantially of cortical bone of a single cortical thickness, said screw having a leading end, a trailing end opposite said leading end, and a shaft therebetween, said shaft having a mid-longitudinal axis and a length, a thread extending from said shaft along at least a portion of its length, said thread having an outer diameter dimensioned to pass through the screw hole in the implant, said screw having an enlarged portion proximate said trailing end with a dimension transverse to the mid-longitudinal axis of said shaft greater than said outer diameter of said thread, said enlarged portion configured to prevent said head from passing through the screw hole in the implant; and
a screw lock formed substantially of cortical bone configured to cooperatively engage at least a portion of the implant so as to prevent said screw from linear motion along the mid-longitudinal axis of said shaft in a direction opposite to the direction of insertion when said screw is inserted through the screw hole to attach the implant to a bone portion of the human body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. An apparatus for locking bone screws formed of cortical bone for use in the human body to an implant having a screw hole for receiving at least a portion of a screw therethrough, said screw comprising:
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at least one bone screw formed substantially of cortical bone of a single cortical thickness, said screw having a leading end, a trailing end opposite said leading end, and a shaft therebetween, said shaft having a mid-longitudinal axis and a length, a thread extending form said shaft along at least a portion of its length, said thread having an outer diameter dimensioned to pass through the screw hole in the implant, said screw having an enlarged portion proximate said trailing end with a dimension transverse to the mid-longitudinal axis of said shaft greater than said outer diameter of said thread, said enlarged portion configured to prevent said enlarged portion from passing through the screw hole in the implant; and
a screw lock formed substantially of cortical bone configured to cooperatively engage at least a portion of the implant so as to prevent said screw from linear motion along the mid-longitudinal axis of said shaft in a direction opposite to the direction of insertion when said screw is inserted through the screw hole to attach the implant to a bone portion of the human body, said lock having a bottom surface configured for cooperating with at least one of said screws. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57, 58, 59)
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60. An apparatus for locking bone screws formed of cortical bone for use in the human body to an implant having a screw hole for receiving at least a portion of a screw therethrough, said screw comprising:
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at least one bone screw formed substantially of cortical bone of a single cortical thickness, said screw having a leading end, a trailing end opposite said leading end, and a shaft therebetween, said shaft having a mid-longitudinal axis and a length, a thread extending from said shaft alonge at least a portion of its lenght, said thred having an outer diameter dimensioned to pass through the screw hole in the implant, said screw having an enlarged portion proximate said trailing end with a dimension transverse to the mid-longitudinal axis of said shaft greater than said outer diameter of said thread, said enlarged portion configured to prevent said enlarged portion from passing through the screw hole in the implant; and
a screw lock formed substanitally of cortical bone configured to cooperatively engage at least a portion of the implant so as to prevent said screw from linear motion along the mid-longitudinal axis shaft in a direction opposite to the direction of insertion when said screw is inserted through the screw hole to attach the implant to a bone portion of the human body, said lock having at least one removed portion to permit insertion of at least one of said screws into a bone screw receiving hole when said lock is attached to the implant when said lock is in a first position, said lock being adapted to lock at least one of said screws to the implant when moved to a second position. - View Dependent Claims (61, 62, 63, 64, 65, 66, 67, 68, 69)
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70. An apparatus for locking bone screws formed of cortical bone for use in the human body to an implant having a screw hole for receiving at least a portion of a screw therethrough, said screw comprising:
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at least one bone screw formed substantially of cortical bone of a single cortical thickness, said screw having a leading end, a trailing end opposite said leading end, and a shaft therebetween, said shaft having a mid-longitudinal axis and a length, a thread extending from said shaft along at least a portion of its length, said thread having an outer diameter dimensioned to pass through the screw hole in the implant, said screw having an enlarged portion proximate said trailing end with a dimension transverse to the mid-longitudinal axis of said shaft greater than said outer diameter of said thread, and enlarged portion configured to prevent said enlarged portion form passing through the screw hole in the implant, at least a portion of said trailing end of said bone screw being expandable; and
a screw lock formed substantially of cortical bone configured to cooperatively engage at least a portion of the implant so as to prevent said screw from linear motion along the mid-longitudinal axis of said shaft in a direction opposite to the direction of insertion when said screw is inserted through the screw hole to attach the implant to a bone portion of the human body. - View Dependent Claims (71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85)
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86. An appartus for locking bone screws formed of cortical bone for use in the human body to an implant having a screw for receiving at least a portion of a screw therethrough, said screw comprising:
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at least one bone screw formed substantially of cortical bone of a single cortical thickness, said screw having a leading end, a trailing end opposite said leading end, and a shaft therebetween, said shaft having a mid-longitudinal axis and a length, a thread extending from said shaft along at least a portion of its length, said thread having an outer diameter dimensioned to pass through the screw hole in the implant said screw having an enlarged portion proximate said trailing end with a dimension transverse to the mid-longitudinal axis of said shaft greater than said outer diameter of said thread, said enlarged portion configured to prevent said enlarged portion from passing through the screw hole in the implant;
a screw lock formed substantially of cortical bone configured to cooperatively engage at least a portion of the implant so as to prevent said screw from linear motion along the mid-longitudinal axis of said shaft in a direction opposite to the direction of insertion when said screw is inserted through the screw hole to attach the implant to a bone portion of the human body; and
a bioreasorbable material other than cortical bone. - View Dependent Claims (87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97)
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Specification