Apparatus for dosed continuous simultaneous infusion of a plurality of infusion solutions or medicaments

• US 4,966,579 A
• Filed: 05/22/1989
• Issued: 10/30/1990
• Est. Priority Date: 05/21/1988
• Status: Expired due to Fees

• Current Assignee: Fresenius AG Gluckensteinweg
• Original Assignee: Fresenius AG (Fresenius SE & Co. KGaA)
• Inventors: Polaschegg, Hans-Dietrich
• Primary Examiner(s): YASKO JR, JOHN D
• Application Number:
  US07/355,151
• Time in Patent Office: 526 Days
• Field of Search: 604/131, 604/65, 604/66, 604/67, 604/191, 604/410, 604/132, 604/154
• US Class Current: 604/65
• CPC Class Codes: A61M 2205/6072 Bar codes
• CPC Class Codes: A61M 5/1408 in parallel, e.g. manifolds, sequencing valves access sites A61M39/02; tube connectors A61M39/10
• CPC Class Codes: A61M 5/1456 with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir
• CPC Class Codes: A61M 5/16827 controlling delivery of multiple fluids, e.g. sequencing, mixing or via separate flow-paths infusion of multiple fluids without using a controller A61M5/1407
• CPC Class Codes: A61M 5/16831 Monitoring, detecting, signalling or eliminating infusion flow anomalies low-level float-valves causing cut-off A61M5/40; indicating or recording presence, absence or direction of flow in general G01P13/0066

Abstract

An apparatus is described for dosed continuous simultaneous infusion of several solutions or medicaments which are arranged in a plurality of containers (25, 26) or syringes (3, 4). From said containers (25, 26) or syringes (3, 4) connecting conduits or tubes (18-21) lead which are connected via a junction piece (27) to a patient conduit (23). In each of the connecting conduits (18-21) a pump (1-4) and a clamp (5-8) are provided which are each controlled via a central processing unit (17). Downstream of said actuating means in the patient conduit (23) a flow element (14) is provided which on detection of a flow stop causes the control means (17) to deactivate the entire apparatus.

Claims

1. Apparatus for dosed continuous simultaneous infusion of a plurality of infusion or medicaments solutions comprising at least one pump, delivery conduits which lead from containers containing the infusion or medicaments solutions and are connected via a junction piece to a common patient conduit, valve which are provided in each delivery conduit, a flow sensor detecting the flow in the patient conduit and a control unit which is operatively connected to the valves, the pump and the flow sensor, characterized in that the flow sensor (14) is arranged downstream of the pump (1-4) and that the control unit (17) causes the valves (5-8) to close on detection of a fluid stop by the flow sensor.

2. Apparatus according to claim 1, characterized in that the flow sensor (14) is a drip detector.

3. Apparatus according to claim 1 or 2, characterized in that a vent means (22) is connected to the junction piece (27).

4. Apparatus according to claim 3, characterized in that the vent means (22) is formed as tube piece on which a valve (9) engages.

5. Apparatus according to claim 3, characterized in that the vent means (22) is closed with a hydrophobic sterile filter (28).

6. Apparatus according to any one of claims 1 to 5, characterized in that in the patient conduit (23) upstream of the flow sensor (14) an air detector (13) is arranged which is connected to the control unit (17) which in response to the signal of the air detector (13) in the vent phase controls the valves (5, 8, 9, 11) and the pump (1-4) in accordance with a predetermined program.

7. Apparatus according to any one of claims 1 to 6 characterized in that downstream of the flow sensor (14) in the patient conduit (23) a further shutoff valve (12) is arranged which on detection of a fluid stop by the flow sensor (14) closes the patient conduit (23) with the aid of the control unit (17).

8. Apparatus according to any one of claims 1 to 7 characterized in that to the junction piece (27) a gravity infusion means (16) is connected via a connecting conduit (36) into which a valve (11) is inserted.

9. Apparatus according to any one of claims 1 to 8, characterized in that to the junction piece (27) a CVD measuring means (15) is connected via a further connecting conduit (35) which can be shut off by a valve (10).