Transdermal intraosseous device
First Claim
Patent Images
1. A transdermal intraosseous device comprising:
- a transdermal adapter configured for connection to an external prosthetic device and configured for use with a bone, the transdermal adapter including;
a metal dome-shaped portion configured for transcutaneous implantation;
a polished metal external shaft having a longitudinal axis and extending from the metal dome-shaped portion; and
a dermal transition structure defining a controlled roughness gradient from the dome-shaped portion of the transdermal adapter to the polished metal external shaft and configured for engagement with a dermis layer of a patient for infection control, the dermal transition structure including;
a porous metal dome-shaped structure surrounding and overlaying the dome-shaped portion of the transdermal adapter;
a first transitional surface treatment layer and a second transitional surface treatment layer both between a sidewall of the polished external shaft and the porous metal dome-shaped structure, the first and second layers aligned along the longitudinal axis of the polished metal external shaft;
the first transitional surface treatment layer roughened by blasting and configured for direct engagement with the dermis layer upon implantation of the device; and
the second transitional surface treatment layer roughened by a combination of blasting treatment and acid-etching treatment and configured for direct engagement with the dermis layer upon implantation of the device; and
a bone fixator including a tapered distal portion received into a tapered bore of the dome-shaped portion of the transdermal adapter via a taper-to-taper connection, a proximal portion configured for anchoring into the bone and a skirt-shaped collar between the distal portion and the proximal portion;
wherein the first transitional surface treatment layer is contiguous with the porous metal dome-shaped structure and is between the porous metal dome-shaped structure and the second transitional surface treatment layer, which abuts the sidewall of the polished metal external shaft; and
wherein the first and the second transitional surface treatment layers provide a gradual transition from the polished metal external shaft to a rough surface of the porous metal dome-shaped structure through the first and the second transitional surface treatment layers, the first transitional surface treatment layer has a greater roughness than the second transitional surface treatment layer.
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Abstract
A transdermal intraosseous device includes a transdermal adapter for an external prosthetic device for a bone of a patient and a bone fixator including a distal portion coupled to the transdermal adapter and a proximal portion for anchoring into the bone. The transdermal adapter includes a dome-shaped portion for transcutaneous implantation and an external shaft extending from the dome-shaped portion. A dermal transition structure is configured to include a controlled roughness gradient from the external shaft to the dome-shaped portion and configured for use in infection control at a dermis layer of the patient.
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Citations
11 Claims
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1. A transdermal intraosseous device comprising:
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a transdermal adapter configured for connection to an external prosthetic device and configured for use with a bone, the transdermal adapter including; a metal dome-shaped portion configured for transcutaneous implantation; a polished metal external shaft having a longitudinal axis and extending from the metal dome-shaped portion; and a dermal transition structure defining a controlled roughness gradient from the dome-shaped portion of the transdermal adapter to the polished metal external shaft and configured for engagement with a dermis layer of a patient for infection control, the dermal transition structure including; a porous metal dome-shaped structure surrounding and overlaying the dome-shaped portion of the transdermal adapter; a first transitional surface treatment layer and a second transitional surface treatment layer both between a sidewall of the polished external shaft and the porous metal dome-shaped structure, the first and second layers aligned along the longitudinal axis of the polished metal external shaft; the first transitional surface treatment layer roughened by blasting and configured for direct engagement with the dermis layer upon implantation of the device; and the second transitional surface treatment layer roughened by a combination of blasting treatment and acid-etching treatment and configured for direct engagement with the dermis layer upon implantation of the device; and a bone fixator including a tapered distal portion received into a tapered bore of the dome-shaped portion of the transdermal adapter via a taper-to-taper connection, a proximal portion configured for anchoring into the bone and a skirt-shaped collar between the distal portion and the proximal portion; wherein the first transitional surface treatment layer is contiguous with the porous metal dome-shaped structure and is between the porous metal dome-shaped structure and the second transitional surface treatment layer, which abuts the sidewall of the polished metal external shaft; and wherein the first and the second transitional surface treatment layers provide a gradual transition from the polished metal external shaft to a rough surface of the porous metal dome-shaped structure through the first and the second transitional surface treatment layers, the first transitional surface treatment layer has a greater roughness than the second transitional surface treatment layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification