-
公开(公告)号：USRE28841E
公开(公告)日：1976-06-08
申请号：US277816
申请日：1972-08-03
CPC分类号： A61B17/8014 , A61B2017/00526
摘要： An osteosynthetic pressure plate includes a slot formation for receiving a bone-fixing screw which is adapted to be secured to a bone part which is to be mended. The slot is formed with an edge which includes an oblique portion or ramp having an inclination such that when it is engaged by the underside of a head portion of a bone-fixing screw there will be a displacement of the pressure plate in a direction to move the ramp portion away from the fixing screw and to cause the plate to apply a pressure to hold the bone parts in tight engagement. The plate is advantageously useable with screws having heads of spherical form or conical form, for example. The inclination of the ramp and the configuration of the walls bounding the slot of the pressure plate are such that there will be a uniform and even shifting of the plate having the slot when the ramp of the walls bounding the slot is engaged by the screw head to cause the desired displacement of the pressure plate in order to displace the bone fragment toward tighter engagement with the adjacent bone fragment and into pressure engagement therewith.
-
公开(公告)号：USRE31628E
公开(公告)日：1984-07-10
申请号：US27921
申请日：1979-04-06
CPC分类号： A61B17/8014 , A61B2017/00526
摘要： An osteosynthetic pressure plate includes a slot formation for receiving a bone-fixing screw which is adapted to be secured to a bone part which is to be mended. The slot is formed with an edge which includes an oblique portion or ramp having an inclination such that when it is engaged by the underside of a head portion of a bone-fixing screw there will be a displacement of the pressure plate in a direction to move the ramp portion away from the fixing screw and to cause the plate to apply a pressure to hold the bone parts in tight engagement. The plate is advantageously useable with screws having heads of spherical form or conical form, for example. The inclination of the ramp and the configuration of the walls bounding the slot of the pressure plate are such that there will be a uniform and even shifting of the plate having the slot when the ramp of the walls bounding the slot is engaged by the screw head to cause the desired displacement of the pressure plate in order to displace the bone fragment toward tighter engagement with the adjacent bone fragment and into pressure engagement therewith.
-
公开(公告)号：US5180382A
公开(公告)日：1993-01-19
申请号：US808594
申请日：1991-12-17
申请人： Robert Frigg , Stephan Perren , Martin Allgower , Paul Gisin
发明人： Robert Frigg , Stephan Perren , Martin Allgower , Paul Gisin
CPC分类号： A61B17/863
摘要： A bone screw (1) has a screw head (2), a screw tip (11), and a shaft (5) with a thread (8,14). The threaded segment (6,7) of the shaft (5) has a head-end, essentially cylindrical first shaft section (6) with minor diameter d.sub.1 (16), and a tip-end second shaft segment (7) that is connected with the first shaft segment (6) and which has a smaller minor diameter d.sub.2 (17). The thread (8,14) in the two shaft segments (6,7) has the same pitch (10,12).
摘要翻译： 骨螺钉（1）具有螺钉头（2），螺钉头（11）和具有螺纹（8,14）的轴（5）。 轴（5）的螺纹部分（6,7）具有前端，具有小直径d1（16）的基本上圆柱形的第一轴部分（6）和连接的尖端端第二轴部分（7） 与第一轴段（6）并且具有较小的小直径d2（17）。 两个轴段（6,7）中的螺纹（8,14）具有相同的间距（10,12）。
-
公开(公告)号：US3668972A
公开(公告)日：1972-06-13
申请号：US3668972D
申请日：1969-04-30
CPC分类号： A61B17/8014 , A61B2017/00526 , Y10T409/303808
摘要： An osteosynthetic pressure plate includes a slot formation for receiving a bone fixing screw which is adapted to be secured to a bone part which is to be mended. The slot is formed with an edge which includes an oblique portion or ramp having an inclination such that when it is engaged by the underside of a head portion of a bone fixing screw there will be a displacement of the pressure plate in a direction to move the ramp portion away from the fixing screw and to cause the plate to apply a pressure to hold the bone parts in tight engagement. The plate is advantageously useable with screws having heads of spherical form or conical form, for example. The inclination of the ramp and the configuration of the walls bounding the slot of the pressure plate are such that there will be a uniform and even shifting of the plate having the slot when the ramp portion of the walls bounding the slot is engaged by the screw head to cause the desired displacement of the pressure plate in order to displace the bone fragment toward tighter engagement with the adjacent bone fragment and into pressure engagement therewith.
-
-
-
搜索结果
4 条记录 (耗时 0.009 秒)
