| 摘要 |
A tracheal tube for artificial ventilation employs a primary sealant cuff and a tonometry cuff for monitoring the degree of local tracheal mucosal ischemia resulting from the pressure exerted by the primary cuff. The tonometry cuff employs a balloon sleeve of silicone elastomer membrane which is permeable to free gas but not liquid. The tonometry cuff is located on the primary sealant cuff so that during tonometry it is in full contact with the tracheal wall under the pressure of the primary cuff. The tonometry balloon sleeve is sealed against the primary cuff in a reverse folded configuration. The tube wall includes a number of lumens which may be employed for various auxiliary functions. |
