公开(公告)号：EP2958510A1

公开(公告)日：2015-12-30

申请号：EP14711629.7

申请日：2014-02-21

Applicant: Li, Nathan Y.

Inventor： LI, Nathan, Y. ,  WU, DaQing

IPC: A61C5/04

Abstract: The present invention provides an improved root canal filling point/cone having a structure that can be manufactured precisely to result in better obturation with less micro-leakage. One aspect of the present invention is directed to a molded root canal filling point having progressively decreasing tapers from the smaller tip end to the larger end. Another aspect of the present invention is directed to a thermo-pressure molding process for manufacturing root canal filling appliances (e.g., Gutta Percha points). A further aspect of the present invention is directed to the structure of the mold for undertaking thermo-injection molding.

Abstract translation: 本发明提供了一种改进的根管填充点/锥体，其具有可精确制造的结构，导致更少的微渗漏的更好的闭塞。 本发明的一个方面涉及一种模制根管填充点，其具有从较小尖端到较大端逐渐减小的锥形。 本发明的另一方面涉及用于制造根管灌装装置的热压成型方法（例如，Gutta Percha点）。 本发明的另一方面涉及用于进行热注射成型的模具的结构。

公开(公告)号：EP3316849A1

公开(公告)日：2018-05-09

申请号：EP16745565.8

申请日：2016-07-01

Applicant: Li, Nathan Y.

Inventor： Li, Nathan Y.

IPC: A61K6/00 ,  A61K6/02

Abstract: A root canal filling cone made of a material having a composition that can maintain its physical and chemical characteristics and shelf life after sterilization, and a process of sterilizing the point/cone prior to shipment to a user. In one aspect, the cone is made of a composition that includes a plurality of base polymers of substantially equal amounts, and nanoparticles, which can withstand sterilization by gamma irradiation. In one embodiment, the compound includes Gutta Percha based polymers. In another aspect, the Gutta Percha based cone is packaged and sterilized by irradiation prior to shipment to a user. In one embodiment of the present invention, the irradiation is gamma irradiation.

公开(公告)号：EP3500207A1

公开(公告)日：2019-06-26

申请号：EP17772141.2

申请日：2017-08-21

Applicant: Li, Nathan Y.

Inventor： Li, Nathan Y.

IPC: A61C5/50 ,  A61C5/55

公开(公告)号：EP2852368A1

公开(公告)日：2015-04-01

申请号：EP13734533.6

申请日：2013-05-21

Applicant: Li, Nathan Y.

Inventor： Li, Nathan Y.

IPC: A61K6/00

CPC classification number: A61K6/0038 ,  A61K6/0002 ,  A61K6/0008 ,  A61K6/0041 ,  A61K6/0255 ,  A61K6/027 ,  A61K6/04 ,  A61K6/046 ,  C08L7/00

Abstract: A root canal filling material incorporates heat conductive particles of sub-micron size dispersed in a heat flowable matrix of endodontic filling material. The particle size is 1 micron or less (e.g., 0.5 to 1 micron, or nanoparticles of 100 nm or less). The addition of high heat conductive particles in the heat flowable matrix material improves the overall heat conductivity of the root canal filling material. During root canal treatment procedure, the filling material softens more thoroughly to fill the root canal apex and to form a seal of higher integrity at the root canal apex area, at a significantly lower operating temperature. The inventive filling material may be provided in bulk (e.g., pellet form) for use with an injection tool that heats and injects softened filling material into root canal cavities, or pre-shaped in the form of dental root canal filling cones (or points).

公开(公告)号：EP2956082A2

公开(公告)日：2015-12-23

申请号：EP14751896.3

申请日：2014-02-14

Applicant: Li, Nathan Y.

Inventor： LI, Nathan, Y. ,  WU, DaQing

IPC: A61C5/04 ,  A61C13/20

CPC classification number: A61C5/04 ,  A61C5/50 ,  A61C13/20 ,  A61C13/206

Abstract: The present invention provides an improved root canal filling point/cone that can be manufactured precisely to result in better obturation with less micro-leakage. One aspect of the present invention is directed to a molded root canal filling point/cone. Another aspect of the present invention is directed to a thermo-pressure molding process for manufacturing root canal filing appliances (e.g., Gutta Percha points). Another aspect of the present invention is directed to the structure of the mold for undertaking thermo-injection molding. A further aspect of the present invention is directed to a production line comprising the thermo-injection process.

Abstract translation: 本发明提供了改进的根管填充点/锥体也能够精确地制造导致具有较少微漏更好充填。 本发明的一个方面涉及一种模制的根管填充点/锥。 本发明的另一个方面涉及到一种热压模塑方法用于制造根管锉电器（例如，杜仲胶点）。 本发明的另一个方面涉及到模具为开展热注塑的结构。 本发明的进一步的方面涉及一生产线，其包括在热喷射过程。