Bone screw with fluid delivery structure
First Claim
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1. A device for entering an area of a host'"'"'s bone matrix to mechanically strengthen the matrix and deliver tissue reinforcement material comprising:
- a shaft with a first external threaded portion, said shaft having a distal end, a middle portion and a proximal end;
said shaft'"'"'s proximal end configured to receive a fluid supply of tissue reinforcement material within walls of said shaft forming a lumen extending therethrough;
walls forming at least one directional non-radial channel extending from said lumen to at least one aperture formed by shaft walls on an outer surface of said device to deliver tissue reinforcement material distally from the device.
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Abstract
A device and method to mechanically strengthen bone matrix and deliver tissue reinforcement material to weakened areas in skeletal structures. A preferred embodiment is an orthopedic screw configured to receive and directionally disperse a therapeutic fluid through the screw'"'"'s channels and apertures.
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Citations
14 Claims
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1. A device for entering an area of a host'"'"'s bone matrix to mechanically strengthen the matrix and deliver tissue reinforcement material comprising:
a shaft with a first external threaded portion, said shaft having a distal end, a middle portion and a proximal end;
said shaft'"'"'s proximal end configured to receive a fluid supply of tissue reinforcement material within walls of said shaft forming a lumen extending therethrough;
walls forming at least one directional non-radial channel extending from said lumen to at least one aperture formed by shaft walls on an outer surface of said device to deliver tissue reinforcement material distally from the device.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 12)
- 10. The device of claim 10 wherein the diameter of the non-threaded portion is at least equal to the outside diameter of the threaded portion.
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13. A method of fixating a bone screw comprising:
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selecting an insertion site in a host patient;
selecting a bone matrix reinforcement screw;
inserting the screw into a host'"'"'s damaged bone matrix so as to cross trabeculae and adjacent zones;
connecting a fluid supply to the proximal end of said screw;
transporting said fluid into a lumen of the screw for distributing through directional channels extending between said lumen and an outer surface of the screw extending as directional apertures to disperse the material distally and proximally from distal and proximal apertures respectively. - View Dependent Claims (14)
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Specification