公开(公告)号：US3901246A

公开(公告)日：1975-08-26

申请号：US43631474

申请日：1974-01-24

申请人： AIRCO INC

发明人： WALLACE DEAN R

IPC分类号： A61M16/04 ,  A61M25/00

CPC分类号： A61M16/044 ,  A61M2025/1054

摘要： A disposable balloon type catheter or endotracheal tube is provided in which an improved valve is utilized and which is operable by the insertion of a syringe to the valve inlet passage to open the valve and allow gas to be forced from the syringe into the main and pilot balloons for inflation thereof. The valve itself is of a resilient plastic material having a main passageway with a plug normally blocking the flow of gas through the passageway. At least one radially inwardly directed projection is formed on the interior surface of the passageway and which is engaged by the inserted syringe to distend the passageway internal surface outwardly to allow gas from the syringe to bypass around the periphery of the plug. The disposable catheter also includes a novel design of pilot balloon having a molded plastic tubular extension extending throughout the length of the pilot balloon. The thin balloon material surrounds the tubular extension and is pre-stretched along the extension so that the pilot balloon configuration takes on a shriveled appearance in its non-inflated state.