Medical fixation devices with improved torsional drive head
First Claim
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1. A medical fixation device installation kit, comprising:
- at least one medical fixation device having an elongate shank comprising a proximal end and a distal end and defining a longitudinal axis and comprising at least one engaging member formed thereon; and
a solid drive head comprising a proximal end, a distal end mated to said elongate shank, a radial cross-sectional geometry, and at least one anti-rotational member comprising a longitudinal cross-sectional geometry integral with said drive head; and
a cylindrical driver tool having a distal end comprising a socket formed therein having a cutout extending through a sidewall of the driver tool and adapted to receive and engage said anti-rotational member of said drive head of said medical fixation device such that the driver tool is prevented from rotating in any direction relative to the drive head,wherein said drive head has a maximum width that is not greater than a major diameter of the elongate shank.
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Abstract
The present invention provides a fixation device that includes an elongate shank defining a longitudinal axis and having at least one engaging member for applying the fixation device within tissue and securing the fixation device in the tissue once implanted formed thereon, and a drive head having a proximal end, a distal end and a radial cross-sectional geometry, where the drive head is mated to the elongate shank, and includes at least one anti-rotational member integral therewith. Fixation device kits utilizing the fixation device, and methods of fixation in tissue are also provided.
127 Citations
18 Claims
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1. A medical fixation device installation kit, comprising:
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at least one medical fixation device having an elongate shank comprising a proximal end and a distal end and defining a longitudinal axis and comprising at least one engaging member formed thereon; and
a solid drive head comprising a proximal end, a distal end mated to said elongate shank, a radial cross-sectional geometry, and at least one anti-rotational member comprising a longitudinal cross-sectional geometry integral with said drive head; anda cylindrical driver tool having a distal end comprising a socket formed therein having a cutout extending through a sidewall of the driver tool and adapted to receive and engage said anti-rotational member of said drive head of said medical fixation device such that the driver tool is prevented from rotating in any direction relative to the drive head, wherein said drive head has a maximum width that is not greater than a major diameter of the elongate shank. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification