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1. 发明公开

EP2501829A1 IMPROVED FATIGUE-RESISTANT NITINOL INSTRUMENT 失效转让
标题翻译：改进的抗疲劳NITINOLINSTRUMENT
公开(公告)号：EP2501829A1
公开(公告)日：2012-09-26
申请号：EP10832092.0
申请日：2010-11-17
申请人： Johnson, William B.
发明人： Johnson, William B.
IPC分类号： C21D9/08
CPC分类号： B21K5/02 , A61C5/42 , A61C2201/007 , C21D1/26 , C21D9/0068 , C21D9/56 , C21D2201/01 , C21D2211/001 , C21D2211/008 , C22C19/03 , C22F1/006 , C22F1/10 , Y10T29/49567
摘要： A fatigue-resistant Nitinol instrument has a working portion in the deformed monoclinic martensitic state and an austenite finish temperature in the range of 40° to 60° C. Because the operating environment of the instrument is about 37° C., the working portion remains in the monoclinic martensitic state during its use. The relatively high austenite finish temperature and fatigue resistance is achieved by subjecting the nickel-titanium alloy to a final thermal heat treat in a temperature range of about 410° to 440° C. while the nickel-titanium alloy is under constant strain of about 3 to 15 kg. Further, the high austenite finish temperature is achieved without subjecting the alloy to thermal cycling to produce shape memory. Additionally, there are no intermediate processing steps occurring between obtaining a finished diameter of the wire or blank through cold working and the final thermal heat treat under constant strain.

2. 发明公开

EP2140828A3 Dental file with improved tip configuration 有权
标题翻译：一种具有改进的尖端配置牙科文件
公开(公告)号：EP2140828A3
公开(公告)日：2011-01-19
申请号：EP09251717.6
申请日：2009-07-03
申请人： Johnson, William B.
发明人： Johnson, William B.
IPC分类号： A61C5/02
CPC分类号： A61C5/42
摘要： A dental instrument for cleaning and shaping a root canal of a tooth includes a working portion having three helical flutes and a guide tip with a first, second, and third face surface. A portion of the guide tip is removed so that each of the first and second surfaces are contiguous to a lateral surface of a conical-shaped envelope defining the original tip but a portion of the third surface is not contiguous to a lateral surface of the conical-shaped envelope. The intersection of the first and second surfaces, however, remains at the center point of the guide tip. The removed portion of the guide tip may result in an arcuate-shaped face surface, an angular-shaped face surface, or some combination of the two.

3. 发明授权

EP1752109B1 Endodontic file combining active and passive cutting edges 有权转让
标题翻译：根管锉具有主动和被动的切削刃
公开(公告)号：EP1752109B1
公开(公告)日：2010-10-13
申请号：EP06254101.6
申请日：2006-08-04
申请人： Johnson, William B.
发明人： Jaunberzins, Andris
IPC分类号： A61C5/02
CPC分类号： A61C5/42

4. 发明授权

EP1829497B1 An endodontic file having a taper defined by a continously changing concavity 有权
标题翻译：具有由连续变化的锥形空腔中定义的根管锉
公开(公告)号：EP1829497B1
公开(公告)日：2010-04-14
申请号：EP07250839.3
申请日：2007-02-28
申请人： Johnson, William B.
发明人： Lynch, Robert P.
IPC分类号： A61C5/02
CPC分类号： A61C5/42

5. 发明公开

EP2100571A1 A longitudinally ground file having increased resistance to torsional and cyclic fatigue failure 审中-公开
标题翻译： LängsbodenfeilemiterhöhterFestigkeit gegen Torsion und zyklischenErmüdungsfehlern
公开(公告)号：EP2100571A1
公开(公告)日：2009-09-16
申请号：EP09250717.7
申请日：2009-03-13
申请人： Johnson, William B.
发明人： Johnson, William B.
IPC分类号： A61C5/02 , B24B19/02
CPC分类号： A61C5/023 , A61C5/42 , B24B1/00 , B24B19/022 , Y10T29/49 , Y10T29/49567 , Y10T29/49568
摘要： A method of producing an endodontic file that involves grinding in a plane substantially parallel to the longitudinal axis of a rotating dental instrument blank. By grinding the dental instrument blank in this manner, the torsional strength of the resulting endodontic file is not eroded during its production, thereby providing a file that is less susceptible to breakage during its use.
摘要翻译：一种生产牙髓锉的方法，其涉及在基本上平行于旋转牙科仪器坯件的纵向轴线的平面内研磨。通过以这种方式研磨牙科仪器坯料，所得到的根管锉的扭转强度在其生产期间不会被侵蚀，从而提供在其使用期间不易破裂的文件。

6. 发明公开

EP1752109A1 Endodontic file combining active and passive cutting edges 有权转让
标题翻译： Zahnwurzelkanalfeile mit aktiven und passiven Schneidkanten
公开(公告)号：EP1752109A1
公开(公告)日：2007-02-14
申请号：EP06254101.6
申请日：2006-08-04
申请人： Johnson, William B.
发明人： Jaunberzins, Andris
IPC分类号： A61C5/02
CPC分类号： A61C5/42
摘要： An endodontic reamer/file for cleaning/shaping a tooth root canal having an elongated shank with a proximal end portion (12), a distal end (14) and a tapered working portion (16) having a longitudinal axis, the external surface of the shank working portion (16) being defined by a plurality of at least two equally spaced apart continuous concaved helical flutes (20) providing concave flute surfaces (22), the flute surfaces having therebetween an equal number of spiraled, spaced apart flanges (24), each flange having in a plane perpendicular the longitudinal axis a single outer end surface having opposed first and second ends, each first end forming an active spiraled leading scraping/cutting edge and each second end forming a passive spiraled edge.
摘要翻译：用于清洁/整形牙根管的根管扩牙器/文件，其具有带有近端部分（12），远端（14）和具有纵向轴线的锥形工作部分（16）的细长柄，所述牙根管的外表面柄工作部分（16）由多个至少两个等间隔开的连续的凹形螺旋槽（20）限定，提供凹槽（40）表面（22），槽表面之间具有相等数量的螺旋形间隔的凸缘（24）每个凸缘在垂直于纵向轴线的平面中具有单个外端表面，该单个外端表面具有相对的第一和第二端部，每个第一端部形成有源螺旋的前刮/切割边缘，并且每个第二端形成无源螺旋边缘。

7. 发明授权

EP2501829B1 IMPROVED FATIGUE-RESISTANT NITINOL INSTRUMENT 失效转让
公开(公告)号：EP2501829B1
公开(公告)日：2018-06-20
申请号：EP10832092.0
申请日：2010-11-17
申请人： Johnson, William B.
发明人： Johnson, William B.
IPC分类号： C21D9/08 , C22C19/03 , C22F1/00 , C22F1/10 , C21D9/56 , B21K5/02 , A61C5/42 , C21D9/06 , C21D9/00 , C21D1/26
CPC分类号： B21K5/02 , A61C5/42 , A61C2201/007 , C21D1/26 , C21D9/0068 , C21D9/56 , C21D2201/01 , C21D2211/001 , C21D2211/008 , C22C19/03 , C22F1/006 , C22F1/10 , Y10T29/49567
摘要： A fatigue-resistant Nitinol instrument has a working portion in the deformed monoclinic martensitic state and an austenite finish temperature in the range of 40° to 60° C. Because the operating environment of the instrument is about 37° C., the working portion remains in the monoclinic martensitic state during its use. The relatively high austenite finish temperature and fatigue resistance is achieved by subjecting the nickel-titanium alloy to a final thermal heat treat in a temperature range of about 410° to 440° C. while the nickel-titanium alloy is under constant strain of about 3 to 15 kg. Further, the high austenite finish temperature is achieved without subjecting the alloy to thermal cycling to produce shape memory. Additionally, there are no intermediate processing steps occurring between obtaining a finished diameter of the wire or blank through cold working and the final thermal heat treat under constant strain.

8. 发明授权

EP2140828B1 Dental file with improved tip configuration 有权
标题翻译：一种具有改进的尖端配置牙科文件
公开(公告)号：EP2140828B1
公开(公告)日：2016-08-31
申请号：EP09251717.6
申请日：2009-07-03
申请人： Johnson, William B.
发明人： Johnson, William B.
IPC分类号： A61C5/02
CPC分类号： A61C5/42

9. 发明公开

EP2804558A1 MULTI-PLANAR PRE-CURVED ROTARY ENDODONTIC FILE 有权转让
标题翻译： MULTIPLANAREVORGEKRÜMMTEROTIERENDE WURZELKANALFEILE
公开(公告)号：EP2804558A1
公开(公告)日：2014-11-26
申请号：EP13705615.6
申请日：2013-01-18
申请人： Johnson, William B.
发明人： Johnson, William B.
IPC分类号： A61C5/02
CPC分类号： A61C5/023 , A61C5/42
摘要： An improved rotary endodontic file includes a multi-planar pre-curved apical portion having a first and a second curvature. The pre-curved apical portion begins at about one-third to one-quarter of the working length as measured from the tip end of the endodontic instrument. The first and second curvature permit the file to continually search and engage the walls of a tooth root canal in a forced inside-forced outside manner. As the file works its way down, it breaks free of any ledges encountered, probes lateral- and delta-type openings, and does not allow the file to stray from the curvature of the canal.
摘要翻译：改进的旋转牙根管文件包括具有第一和第二曲率的多平面预弯曲顶端部分。预弯曲的顶端部分从根牙髓器的尖端测量的工作长度的大约三分之一到四分之一开始。第一和第二曲率允许文件以强制的内部强制外部方式不断地搜索和啮合牙根管的壁。随着文件的工作方式下降，它不会遇到任何突起，探测横向和三角形开口，并且不允许文件偏离运河曲率。

10. 发明公开

EP1829497A3 An endodontic file having a taper defined by a continously changing concavity 有权
标题翻译：具有由连续变化的锥形空腔中定义的根管锉
公开(公告)号：EP1829497A3
公开(公告)日：2008-01-02
申请号：EP07250839.3
申请日：2007-02-28
申请人： Johnson, William B.
发明人： Lynch, Robert P.
IPC分类号： A61C5/02
CPC分类号： A61C5/42
摘要： A dental instrument for endodontic applications comprising an elongated shaft having a proximal end (12) and a reduced diameter distal end (16) and a tapered working portion (14) extending from the proximal to the distal end, the working portion having at least one helicoidal cutting / scraping edge (38), the taper of the shaft working portion being defined by an initial relatively large radius of concavity at the distal end (16) and of continually reduced radius of concavity terminating in a final relatively small radius of concavity at the proximal end (12). In one embodiment the radii of concavity varies with substantial elliptical conformity.

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