| 摘要 |
A lockable drainage catheter is disclosed for percutaneous insertion into a patient and drainage of fluid therefrom. The drainage catheter includes a flexible tube that is preformed for retaining the distal end of the catheter in the patient. For insertion, the distal end is straightened with the use of a stiffening cannula that is inserted through the hollow passageway of the catheter. When the catheter is inserted in the patient, the stiffening cannula is removed, and a thin cable positioned within the passageway of the catheter is drawn to position the end of the flexible tube to a desired retention configuration. A twisting lock device positioned at the proximal end of the catheter draws the cable through the passageway of the elongated member tube to position the end of the flexible tube to a retention configuration. By twisting the proximal member relative to the distal member of the twisting lock device, the cable wraps around a reel within the device. When the device is twisted to the locked position, a rubber O-ring is compressed resulting in a fluid tight connection. The compressed O-ring provides enough friction to maintain the device in the locked position. A Luer lock connector is affixed to the proximal end of the twisting lock device for connection to a drainage collection system.
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