公开(公告)号：US20070255387A1

公开(公告)日：2007-11-01

申请号：US11771889

申请日：2007-06-29

申请人： PAMELA KRAMER ,  JOHN MORRIS

发明人： PAMELA KRAMER ,  JOHN MORRIS

IPC分类号： A61F2/06 ,  B21D31/00

CPC分类号： A61L29/02 ,  A61F2/01 ,  A61F2/91 ,  A61F2/915 ,  A61F2002/075 ,  A61F2002/91533 ,  A61F2002/91575 ,  A61F2230/005 ,  A61F2230/0054 ,  A61F2230/0067 ,  A61L31/022 ,  A61L31/14

摘要： Medical devices are manufactured from fine grained materials, processed from of a variety of metals and alloys, such as stainless steel, cobalt-chromium and nickel-titanium alloys. A fine grained metal or alloy is formed from a specimen rapidly heated to its recrystallization temperature, and then subjected to high temperature, multi-axial deformation, for example, by heavy cross-forging or swaging. The deformed specimen may be cooled and reheated to a second recrystallization temperature. The metal or alloy in the specimen is then allowed to recrystallize, such that the grain size is controlled by quenching the specimen to room temperature. A desired medical device is then configured from the fine grained material. Decreasing the average grain size of a substrate material and increasing the number of grains across a thickness of a strut or similar component of the medical device increases the strength of the device and imparts other beneficial properties into the device.

摘要翻译： 医疗器械由细粒材料制成，由各种金属和合金（如不锈钢，钴铬和镍钛合金）加工而成。 由快速加热到其再结晶温度的试样形成细粒状金属或合金，然后例如通过重交叉锻造或模锻进行高温多轴变形。 变形的试样可以冷却并再次加热至第二再结晶温度。 然后将样品中的金属或合金重结晶，使得通过将样品淬火至室温来控制晶粒尺寸。 然后从细粒材料配置期望的医疗装置。 降低衬底材料的平均晶粒尺寸并增加穿过医疗装置的支柱或类似部件的厚度的晶粒数增加了装置的强度并赋予装置其它有益特性。