Symmetrical rubber dam having a tooth gripping orifice
- 申请公布号：
- US2004229189(A1)
- 申请号：
- US20030437649
- 申请日期：
- 2003.05.13
- 申请公布日期：
- 2004.11.18
- 申请人：
- ZIRC COMPANY
- 发明人：
- COX DUANE EDWARD
- 分类号：
- A61C5/14;(IPC1-7):A61C5/14
- 主分类号：
- A61C5/14
- 摘要：
- A rubber dam (1) used for protecting a patient (2) during dental procedures. The dam (1) includes a symmetrical round frame (3) which supports a flexible membrane (11). A prepunched hole (19) located approximately 0.5 inch from the membrane center (18) permits rotation of the frame (3) in order to position the hole (19) over the desired tooth (13) without causing the relative position of the frame (3) with respect to the patient's face to be substantially altered.
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