Peritoneal dialysis apparatus
First Claim
1. A method for the periodic rinsing of the abdominal cavity of a patient, comprising the following steps:
- (a) supporting a filling vessel (4) and a discharge vessel (11) at opposite ends of a comparing balancing means;
(b) operatively connecting both vessels through first and second valves (5,
8) to said abdominal cavity;
(c) filling said filling vessel while said first valve is closed;
(c) opening the first valve (5) for emptying the filling vessel (4) through said first valve (5) into said abdominal cavity;
(e) closing the first valve (5), opening the second valve (8) and draining the abdominal cavity into said discharge vessel (11) while simultaneously refilling said filling vessel (4);
(f) closing the second valve (8) in response to a balanced condition as sensed from said comparing balancing means when the filling vessel and the discharge vessel hold the same quantity of liquid;
(g) continuing the draining into a measuring vessel; and
(h) emptying the discharge vessel, wherein said measuring vessel provides a measure for any liquid excess being drained from said cavity in addition to the liquid supplied through said filling vessel.
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Accused Products
Abstract
In peritoneal dialysis apparatus, flushing liquid is pumped into a supply vessel (4) which is then emptied into the body cavity through a valve (5) and a catheter (6). The supply vessel is then refilled while the cavity is drained back through the catheter into a receptacle (11) of the same weight and dimensions as the supply vessel. The supply vessel and receptacle are suspended at opposite ends of a balance beam (12) and when they are in balance after the receptacle has been filled, a valve (8) isolates the receptacle from the catheter and surplus fluid from the cavity is collected in a measuring vessel (15) through a valve (9), the receptacle being emptied through a valve (10).
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Citations
3 Claims
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1. A method for the periodic rinsing of the abdominal cavity of a patient, comprising the following steps:
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(a) supporting a filling vessel (4) and a discharge vessel (11) at opposite ends of a comparing balancing means; (b) operatively connecting both vessels through first and second valves (5,
8) to said abdominal cavity;(c) filling said filling vessel while said first valve is closed; (c) opening the first valve (5) for emptying the filling vessel (4) through said first valve (5) into said abdominal cavity; (e) closing the first valve (5), opening the second valve (8) and draining the abdominal cavity into said discharge vessel (11) while simultaneously refilling said filling vessel (4); (f) closing the second valve (8) in response to a balanced condition as sensed from said comparing balancing means when the filling vessel and the discharge vessel hold the same quantity of liquid; (g) continuing the draining into a measuring vessel; and (h) emptying the discharge vessel, wherein said measuring vessel provides a measure for any liquid excess being drained from said cavity in addition to the liquid supplied through said filling vessel. - View Dependent Claims (2, 3)
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Specification