公开(公告)号：EP1119310A1

公开(公告)日：2001-08-01

申请号：EP99949967.6

申请日：1999-09-30

申请人： Tulsa Dental Products Inc.

发明人： JOHNSON, William, B.

IPC分类号： A61C5/02

CPC分类号： A61C5/44 ,  A61C5/42

摘要： An improved file for use in the endodontic preparation of a root canal, the file having a handle portion at one end and an active working portion tapering toward the distal end, the active portion having an external surface with at least one helical flute forming a helical scraping edge and, preferably, an axially adjacent land, the working portion having areas or zones of reduced surfaces that contact root canal surfaces during use. Preferably the zones are a plurality of axially spaced zones of reduced diameter so that the total length of file working portion in contact with canal wall surfaces during use is reduced. In manufacturing the improved file, a plurality of axially spaced zones of reduced diameter are formed on the working portion of a conventional file, including helical flutes and lands as desired, wherein the file of the invention includes an undulating external working portion profile.

公开(公告)号：EP1001728A4

公开(公告)日：2006-06-14

申请号：EP98917953

申请日：1998-03-11

申请人： TULSA DENTAL PRODUCTS INC

发明人： JOHNSON WILLIAM B

IPC分类号： A61C5/04 ,  A61C5/02 ,  A61C13/30

CPC分类号： A61C13/30 ,  A61C5/40 ,  A61C5/50

摘要： This invention is an obturator for use in filling an endodontically prepared root canal in a tooth formed as an elongated body having a handle portion (10) and a shaft (12), the handle portion (10) being configured for grasping by a practitioner whereby the shaft (12) may be inserted into a root canal, the shaft tapering from the handle (10) to the shaft distal end (14), the shaft having an exterior surface having a generally linear groove (22) therein extending from near the handle to the shaft distal end, or at least adjacent the shaft distal end, the groove providing a channel for flow of excess filler material as the shaft is positioned into a prepared root canal, increased flexibility of the shaft, and a passageway that will accept a slender, tapered metallic retrieval tool, such as a typical endodontic file, to assist in the removal of the shaft from a root canal.

公开(公告)号：EP0902661B1

公开(公告)日：2004-05-12

申请号：EP97922591.9

申请日：1997-05-01

申请人： Tulsa Dental Products Inc.

发明人： HEATH, Derek, E. ,  MOONEYHAN, Jerry, A.

IPC分类号： A61C5/02

CPC分类号： A61C5/42 ,  Y10T408/9097

摘要： An endodontic instrument which comprises an elongate shank which has a tapered working length adjacent the pilot end, and at least two continuous helical flutes formed along the tapered working length. The flutes are non-uniformly separated in the axial direction, and they define a relatively broad helical land and at least one relatively narrow helical surface. In one embodiment, the helical surface is a relatively narrow helical land and in another embodiment, the helical surface is a sharp helical edge.

公开(公告)号：EP1001728A1

公开(公告)日：2000-05-24

申请号：EP98917953.6

申请日：1998-03-11

申请人： Tulsa Dental Products Inc.

发明人： JOHNSON, William, B.

IPC分类号： A61G5/02

CPC分类号： A61C13/30 ,  A61C5/40 ,  A61C5/50

摘要： This invention is an obturator for use in filling an endodontically prepared root canal in a tooth formed as an elongated body having a handle portion (10) and a shaft (12), the handle portion (10) being configured for grasping by a practitioner whereby the shaft (12) may be inserted into a root canal, the shaft tapering from the handle (10) to the shaft distal end (14), the shaft having an exterior surface having a generally linear groove (22) therein extending from near the handle to the shaft distal end, or at least adjacent the shaft distal end, the groove providing a channel for flow of excess filler material as the shaft is positioned into a prepared root canal, increased flexibility of the shaft, and a passageway that will accept a slender, tapered metallic retrieval tool, such as a typical endodontic file, to assist in the removal of the shaft from a root canal.

摘要翻译： 一种用于填充形成为具有手柄部分和轴的细长主体的牙齿中的牙根管制备的根管的闭孔器，所述手柄部分构造成用于由从业者抓握，从而所述轴可插入根管中，所述轴 所述轴具有从所述手柄到所述轴远端的锥形，所述轴的外表面具有大致线性的凹槽，所述外表面从所述手柄附近延伸到所述轴远端，或者至少邻近所述轴远端，所述凹槽提供：（a） 当轴被定位成准备的根管时，用于流过多余填充材料的通道; （b）提高轴的灵活性，以及​​（c）通道，其将接纳细长的锥形金属回收工具，例如典型的牙髓锉，以帮助从根管中移除轴。

公开(公告)号：EP0619987B1

公开(公告)日：1999-09-01

申请号：EP94302556.9

申请日：1994-04-12

申请人： Tulsa Dental Products Inc.

发明人： Johnson, Wiliam B.

IPC分类号： A61C5/04

CPC分类号： A61C5/50 ,  A61C5/55 ,  A61C13/0028

公开(公告)号：EP1001728B1

公开(公告)日：2008-02-13

申请号：EP98917953.6

申请日：1998-03-11

申请人： Tulsa Dental Products Inc.

发明人： JOHNSON, William, B.

IPC分类号： A61C5/04

CPC分类号： A61C13/30 ,  A61C5/40 ,  A61C5/50

摘要： This invention is an obturator for use in filling an endodontically prepared root canal in a tooth formed as an elongated body having a handle portion (10) and a shaft (12), the handle portion (10) being configured for grasping by a practitioner whereby the shaft (12) may be inserted into a root canal, the shaft tapering from the handle (10) to the shaft distal end (14), the shaft having an exterior surface having a generally linear groove (22) therein extending from near the handle to the shaft distal end, or at least adjacent the shaft distal end, the groove providing a channel for flow of excess filler material as the shaft is positioned into a prepared root canal, increased flexibility of the shaft, and a passageway that will accept a slender, tapered metallic retrieval tool, such as a typical endodontic file, to assist in the removal of the shaft from a root canal.

公开(公告)号：EP1119310B1

公开(公告)日：2006-11-22

申请号：EP99949967.6

申请日：1999-09-30

申请人： Tulsa Dental Products Inc.

发明人： JOHNSON, William, B.

IPC分类号： A61C5/02

CPC分类号： A61C5/44 ,  A61C5/42

摘要： An improved file for use in the endodontic preparation of a root canal, the file having a handle portion at one end and an active working portion tapering toward the distal end, the active portion having an external surface with at least one helical flute forming a helical scraping edge and, preferably, an axially adjacent land, the working portion having areas or zones of reduced surfaces that contact root canal surfaces during use. Preferably the zones are a plurality of axially spaced zones of reduced diameter so that the total length of file working portion in contact with canal wall surfaces during use is reduced. In manufacturing the improved file, a plurality of axially spaced zones of reduced diameter are formed on the working portion of a conventional file, including helical flutes and lands as desired, wherein the file of the invention includes an undulating external working portion profile.

摘要翻译： 一种用于根管根管制剂的改进文件，所述文件具有在一端的手柄部分和朝向所述远端渐缩的主动工作部分，所述活动部分具有外表面，所述外表面具有形成螺旋形的螺旋槽 刮削边缘，优选地，沿轴向相邻的平台，所述工作部分具有在使用期间接触根管表面的减小表面的区域或区域。 优选地，这些区域是直径减小的多个轴向间隔的多个区域，使得在使用期间与管道壁表面接触的文件工作部分的总长度减小。 在制造改进的文件中，在传统文件的工作部分上形成多个轴向间隔开的小直径的区域，包括螺旋槽纹和焊盘，其中本发明的文件包括起伏的外部工作部分轮廓。

公开(公告)号：EP0822787B1

公开(公告)日：2000-07-05

申请号：EP96912799.2

申请日：1996-04-16

申请人： Tulsa Dental Products Inc.

发明人： Heath, Derek, E. ,  Mooneyhan, Jerry

IPC分类号： A61C5/04

CPC分类号： A61C5/50

摘要： A kit of endodontic instruments for use in root canal therapy wherein each instrument comprises an elongate blade having a proximate end and an opposite distal end, and with the blades of the instruments in the kit respectiely having progressively increasing tapers. The kit is employed to fill an extirpated root canal with gutta percha, and instruments of progressively increasing taper are used in sequence during the obturation procedure so as to control the compaction of the gutta percha points in the canal.

公开(公告)号：EP0831749B1

公开(公告)日：2000-05-03

申请号：EP96916963.0

申请日：1996-06-03

申请人： Tulsa Dental Products Inc.

发明人： Heath, Derek E. ,  Mooneyhan, Jerry A.

IPC分类号： A61C5/02

CPC分类号： A61C5/42

摘要： A kit of endodontic instruments which are adapted for use in performing root canal therapy, and wherein the instruments in the kit have increasing diameters and differing tapers. The instruments are designed to be used sequentially in root canal therapy, and the difference of the tapers serves to prevent the whole working length of the instruments from being engaged with the wall of the tapered canal being formed, to thereby reduce the frictional loading of the instruments and the risk of breakage.

摘要翻译： 一种适用于进行根管治疗的根管器具，其中套件中的仪器具有增加的直径和不同的锥度。 仪器被设计为在根管治疗中顺序使用，并且锥度的差异用于防止器械的整个工作长度与形成的锥形管的壁接合，从而降低了 仪器和破损的风险。

公开(公告)号：EP0944363A1

公开(公告)日：1999-09-29

申请号：EP97935339.0

申请日：1997-07-24

申请人： Tulsa Dental Products Inc.

发明人： HEATH, Derek, E.

IPC分类号： A61C5 ,  B21K5

CPC分类号： B21K5/04 ,  A61C5/42

摘要： A method of fabricating an endodontic instrument (10), wherein a cylindrical metal blank (B) is first cold forged in a rotary swaging machine (26) to form a tapered end portion (35). Thereafter, the tapered end portion (35) is machined to form at least one helical flute (21, 22) along its length, with the helical flute (21, 22) defining a cutting edge (24) along each side edge thereof. The combination of the cold forging and machining operations has been found to produce instruments which are stronger than instruments produced by conventional practices. Also, the instruments may be produced more quickly and thus at less expense, and they may be produced without loss of raw material.

摘要翻译： 在牙髓器械（10）的制造方法，worin圆柱形金属坯件（B）的方法是在一个旋锻机（26）锻造第一冷以形成锥形端部（35）。 那里之后，锥形端部（35）被加工成沿其长度的至少一个螺旋槽（21，22），与所述螺旋槽（21，22） - 定义沿其各侧缘的切削刃（24）。 冷锻和加工操作的组合已经发现产生仪器哪些是比传统方式生产出来的仪器更强。 因此，该仪器可更迅速，从而产生以更低的成本，他们可能没有原料损失的情况下产生的。