| 摘要 |
CANADIAN PATENT APPLICATION OF OF CONNY ERLINGSSON FOR PUMP ARRANGEMENT AND MONITORING APPARATUS FOR USE IN PLEURA DRAINAGE A pump arrangement for use in pleura drainage to establish a predetermined subpressure in a patient's pleural cavity comprises a means to connect the arrangement to a drainage tube attached to the patient and extending into the patient's pleural cavity. The arrangement further comprises a subpressure chamber and a pump which is connected with the subpressure chamber to maintain a subpressure therein. A first means is adapted to sense the subpressure in the subpressure chamber, to activate the pump in order to increase the subpressure in the subpressure chamber when the sensed subpressure falls below a given first value which is higher than the value of said predetermined subpressure, and to inactivate the pump when the sensed subpressure reaches a given second value which is higher than said first value. A second means is adapted to sense the subpressure in the drainage tube, to provide a connection between the subpressure chamber and the drainage tube when the sensed subpressure in the drainage tube falls below said predetermined subpressure, and to interrupt said connection when the sensed subpressure in the drainage tube reaches the value of said predetermined subpressure. An apparatus for monitoring the patient s state comprises an indicator having an impulse generator and an actuator for acuation thereof during the intervals when the pump arrangement is in operation. The indicator is adapted to indicate the time during which the intermittently operating pump arrangment is in operation, and comprises a display means for displaying a value which is dependent on the said time. |
