| 摘要 |
In a bilumen catheter (101), one lumen (202) carries an electrical conductor (204) terminating as a cathode of an electrochemical gas sensor. Potting material (206) such as epoxy seals off both lumens(201,202), encloses and holds the end of the conductor (204), and exposes a tip (207) thereof of predetermined cross-section, which defines the cathode electrode. The tip (207) is dip-coated to form a selectively permeable membrane (208), and an opening (205) is provided into the second lumen (201) for withdrawal of samples of blood or the like. |
