A continuous, uninterrupted two-step treatment process capable of forming nanometer scale physical structures on the surface of articles fabricated from metallic, ceramic, glass, or plastic materials, and then depositing a thin conformal coating on the nanostructured surface such that the physical structures previously produced are neither masked nor are the dimensions of the physical structures substantially altered. In an additional embodiment, a thicker coating can be grown from the thin conformal coating which itself can be nanostructured as it is deposited. In this case adhesion of the thicker coating is not dependent upon the use of conventional surface pretreatments such as machining, chemical etching, or abrasive blasting. Surface texturing may be performed by ion beam sputtering, and ion assisted coating forms the thin conformal coating, and thicker coating if desired. The treatment process is useful for improving the mechanical, catalytic, chemical, or biological activity of the surfaces so treated.
Bioactive Device Having Surface With Alloyed Layer Of Calcium Phosphate Compounds And Method Of Making
Thomas Driskell - Westerville OH, US Arnold Deutchman - Columbus OH, US
International Classification:
A61C008/00 C23C014/32
US Classification:
204/192300, 204/192110, 433/201100
Abstract:
A dental or orthopedic implantable prosthetic device () which has a bioactive surface of an alloyed layer of material having calcium phosphate compounds. The device is formed by placing a suitable substrate of biocompatible material in a vacuum chamber (), the substrate is cleaned by ion beam sputtering () and then ion beam sputtering () evolves and deposits () bioactive material onto the surface of the device. The bioactive layer is mixed into the surface forming an alloyed zone by augmenting ion beam () and is grown out to a selected thickness while being continuously bombarded by the augmenting ion beam.
Bioactive Device Having Surface With Alloyed Layer Of Calcium Phosphate Compounds And Method Of Making
Thomas Driskell - Westerville OH, US Arnold Deutchman - Columbus OH, US
International Classification:
A61F002/02
US Classification:
623/011110
Abstract:
A dental or orthopedic implantable prosthetic device () which has a bioactive surface of an alloyed layer of material having calcium phosphate compounds. The device is formed by placing a suitable substrate of biocompatible material in a vacuum chamber (), the substrate is cleaned by ion beam sputtering () and then ion beam sputtering () evolves and deposits () bioactive material onto the surface of the device. The bioactive layer is mixed into the surface forming an alloyed zone by augmenting ion beam () and is grown out to a selected thickness while being continuously bombarded by the augmenting ion beam.
Orthopaedic Implants Having Self-Lubricated Articulating Surfaces Designed To Reduce Wear, Corrosion, And Ion Leaching
Arnold H. DEUTCHMAN - Columbus OH, US Robert J. PARTYKA - Columbus OH, US Robert J. BOREL - Naples FL, US
International Classification:
A61F 2/02 A61F 2/28
US Classification:
623 1111, 623 1611
Abstract:
Mechanical devices such as prosthetic knees, hips, shoulders, fingers, elbows, wrists, ankles, fingers and spinal elements when implanted in the body and used as articulating elements are subjected to wear and corrosion. These prosthetic implants are usually fabricated in modular form from combinations of metallic materials such as stainless steels, Co—Cr—Mo alloys, and Ti—Al—V alloys; plastics such as ultra high molecular weight polyethylene (UHMWPE); and ceramics such as alumina and zirconia. As the articulating surfaces of these materials wear and corrode, products including plastic wear debris, metallic wear particles, and metallic ions will be released into the body, transported to and absorbed by bone, blood, the lymphatic tissue, and other organ systems. The polyethylene wear particles have been shown to produce long term bone loss and loosening of the implant. And, even very low concentrations of metallic wear particles and metallic ions are suspect in causing adverse toxic, inflammatory, and immunologic tissue reactions. This invention provides prosthetic implants having articulating surfaces that exhibit a reduced rate of release of wear debris and metal ions into the body and a method of producing such prosthetic implants.
Arnold H. Deutchman - Columbus OH Robert J. Partyka - Columbus OH
Assignee:
BeamAlloy Corporation - Dublin OH
International Classification:
B05D 306 C23C 1400
US Classification:
427 38
Abstract:
The invention relates to a low temperature, dual beam vacuum deposition process for forming a hard, stress reduced, ballistically alloyed film such as diamond onto a substrate.
Laser Device With Intermediate Refraction Index Layer For Reduced Fresnel Losses
Gary Long - Cincinnati OH Arnold H. Deutchman - Columbus OH
Assignee:
Laser Centers of America, Inc. - Cincinnati OH
International Classification:
H01S 330
US Classification:
372 6
Abstract:
A thin layer of a material having a refractive index that varies non-abruptly between the refractive indices of an optic fiber and a tip element in a laser device significantly reduces Fresnel losses where the optic fiber meets the tip element. The layer is readily created by either an ion beam mixing process or by an ion beam enhanced deposition (IBED) process for forming a layer of varying refractive index and comprising a ceramic material such as silica, very securely bonded into the laser light energy receiving end of the tip element which may conveniently be made of a ceramic material such as YAG, silica or sapphire. Greater utility of such a tip element is realized by providing an ohmic heating layer over a part of the tip element. In another aspect of this invention, the tip element is provided with an additional layer comprising a high temperature melting point material at an energy delivery end, applied either by the ion mixing process or the IBED process, to absorb and convert laser light into thermal energy for localized heating, e. g. , to vaporize, cauterize, or coagulate tissues in a surgical procedure.
Laser Surgical Device With Blunt Flat-Sided Energy-Delivery Element
Gary Long - Cincinnati OH Arnold H. Deutchman - Columbus OH
Assignee:
Laser Centers of America - Cincinnati OH
International Classification:
A61N 506
US Classification:
606 28
Abstract:
A laser light energy powered device for providing directed emission of laser light energy has a blunt, i. e. , non-sharp, laser light emitting tip element. The tip element is preferably formed as a slab defined by two pairs of parallel sides, a proximal end face for receiving laser light energy conveyed thereto through an optic fiber, and a laser light energy emitting curved-sided distal end surface. The curved side surface is contiguous at one end with one of the elongate parallel sides defining the tip element. All surfaces are smooth and polished in one embodiment and laser light energy is emitted therefrom in a first portion focused generally forwardly of the distal end of the tip element and in a second portion emitted laterally of the end portion of the tip element. In other aspects of the invention, the distal end surface portions of the tip element are provided with a smooth thin layer of a high temperature melting point material ballistically bonded to the tip element material by an ion beam mixing process or an ion beam enhanced deposition process with sufficient energy to form a secure metallic-ceramic bond with the material of the tip element. This securely bonded layer totally absorbs all laser light energy reaching it through the tip element material and converts it into heat applicable by contact with tissue for surgical purposes.
Arnold H. Deutchman - Columbus OH Robert J. Partyka - Columbus OH
Assignee:
BeamAlloy Corporation - Dublin OH
International Classification:
B05D 306 C23C 1400
US Classification:
427 38
Abstract:
The invention discloses a dual ion beam ballistic alloying process for forming a film such as diamond onto a substrate, which comprises the steps of: (a) cleaning the surface of the substrate with a first energy beam of inert atoms; (b) depositing a layer of a desired non-hydrocarbon substance on the substrate with a low energy, sputtered atomic beam; (c) simultaneously exposing the substrate to said first energy beam of inert atoms with a high energy to grow a ballistically alloyed layer having a thickness of about 10-2000. ANG. ; and (d) reducing the energy level of the first, high energy beam to cause the growth of the layer of said substance on said substrate to a final desired thickness.