| 摘要 |
1,240,411. Local dental anaesthetic device. G. WEINZ. 27 May, 1969 [31 May, 1968], No. 26726/69. Heading A5R. A device for anaesthetising a gum prior to an anaesthetic injection for dental operation comprises a tab saturated, or coated, with at least one anaesthetic agent, disinfectant agent and dye agent. The tab may be of paper, textile material, plastics material, or a mixture thereof, and is capable of adhering to a mucous membrane by moisture. |
