公开(公告)号：US5823774A

公开(公告)日：1998-10-20

申请号：US594581

申请日：1996-01-31

Applicant: Dwight E. Abbott ,  Kenneth L. Brown

Inventor： Dwight E. Abbott ,  Kenneth L. Brown

IPC: A61B17/16 ,  A61C1/08 ,  A61C1/02

CPC classification number: A61C1/057 ,  A61B17/16 ,  A61C1/08 ,  A61B17/1646 ,  A61B2017/1653 ,  A61B2217/005 ,  A61B2217/007

Abstract: A device is disclosed that dynamically seals the collet of a high-speed surgical or dental drill from the ingress of contaminating substances with which the tool or collet of the drill comes into contact, such as blood, saliva, saline, tissue, bone chips, and tooth particles. The dynamic seal comprises an impeller and a bearing that rotatably supports both the impeller and a surgical tool; furthermore, the seal may be disposed within a burguard that is mounted on the distal end of a surgical drill. The spinning impeller has a disc portion that imparts a centrifugal force to the flow of contaminating substances and thereby pumps the flow entering through the tool opening radially outward through discharge holes in the burguard housing. The dynamic seal further includes an O-ring for sealing against the tool shaft and blocking the contaminating substances from continuing up the tool bore and into the collet of the surgical drill. A backring retains the O-ring in place.

Abstract translation: 公开了一种装置，其将高速手术或牙钻的夹头从钻孔的工具或夹头接触的污染物质的入口（例如血液，唾液，盐水，组织，骨碎片， 和牙颗粒。 动态密封包括叶轮和可旋转地支撑叶轮和外科手术工具的轴承; 此外，密封件可以设置在安装在外科手术钻头的远端上的保护套内。 旋转叶轮具有向污染物质的流动赋予离心力的圆盘部分，从而通过工具开口径向向外进入穿过保ard壳体中的排放孔的流动。 动态密封件还包括用于密封工具轴的O形环，并阻止污染物质继续工具孔并进入外科手术钻头的夹头。 后背保持O形圈就位。