Infusion control device

• US 9,132,233 B2
• Filed: 08/26/2010
• Issued: 09/15/2015
• Est. Priority Date: 08/26/2010
• Status: Active Grant

• Current Assignee: B Braun Melsungen AG (B. Braun Holding GmbH & Co. KG)
• Original Assignee: B Braun Melsungen AG (B. Braun Holding GmbH & Co. KG)
• Inventors: Lee, Freddie Eng Hwee
• Primary Examiner(s): Sirmons, Kevin C
• Assistant Examiner(s): PATEL, SHEFALI DILIP
• Application Number:
  US12/869,316
• Publication Number:
  US 20120053556A1
• Time in Patent Office: 1,846 Days
• Field of Search: 604/500, 604/506, 604/513, 604/131, 604/151, 604/246, 604/247, 604/248, 604/249, 604/250, 604/256, 604/257, 604/258, 604/533, 604/534, 604/535, 604/537, 604/538, 604/539, 604/905
• US Class Current: 1/1
• CPC Class Codes: A61M 2005/1402 Priming
• CPC Class Codes: A61M 2005/1403 Flushing or purging
• CPC Class Codes: A61M 2005/1405 Patient controlled analgesia [PCA]
• CPC Class Codes: A61M 2039/0009 Assemblies therefor designed for particular applications, e.g. contrast or saline injection, suction or irrigation
• CPC Class Codes: A61M 2205/273 preventing reuse, e.g. of disposables
• CPC Class Codes: A61M 39/284 Lever clamps
• CPC Class Codes: A61M 5/141 with capillaries for restricting fluid flow
• CPC Class Codes: A61M 5/16809 by repeated filling and emptying of an intermediate volume pressure infusion using positive displacement pumps A61M5/142
• CPC Class Codes: A61M 5/16877 Adjusting flow; Devices for setting a flow rate

Abstract

A medical fluid control device includes an actuator that is selectively operable to cause a fluid to be delivered from a fluid source to a patient at a basal rate of flow via a first flow path, or cause a bolus dose of the fluid to be delivered from a bolus reservoir to the patient via a second flow path.

Claims

1. A device for controlling delivery of a fluid from a fluid source to a patient, the device comprising:

a first flow path between the fluid source and the patient, the first flow path for delivering the fluid from the fluid source to the patient at a basal rate of flow;

a second flow path between the fluid source and the patient, the second flow path including;

a first branch and a second branch;

a bolus reservoir distal to the first branch and the second branch in the second flow path;

a bolus valve disposed between the bolus reservoir and the patient;

the first branch including a bolus restrictor tubing in which the fluid source is in fluid communication at a bolus filling rate with the bolus reservoir and the bolus valve; and

the second branch including a branch valve in which the fluid source is in fluid communication with the branch valve, the bolus reservoir and the bolus valve; and

a single actuator that actuates the bolus valve and the branch valve to operably select each of at least three modes of operation, the at least three modes of operation including a priming mode, a fill mode, and a standby mode;

the priming mode selected by the actuator opening the bolus valve and the branch valve such that the fluid flows through the first flow path, the first branch of the second flow path, and the second branch of the second flow path;

the fill mode selected by the actuator closing the bolus valve and opening the branch valve such that the fluid flows from the fluid source to the bolus reservoir via the second branch of the second flow path; and

the standby mode selected by the actuator closing the bolus valve and the branch valve such that the fluid flows between the fluid source and the patient via the first flow path.

2. The device of claim 1, wherein, in the standby mode, the actuator is selectively further operable to open the bolus valve and apply a pressure to the bolus reservoir to cause the fluid stored in the bolus reservoir to flow to the patient.

3. The device of claim 1, wherein, in the standby mode, the actuator is selectively further operable to be depressed responsive to a user action.

4. The device of claim 1, wherein the first flow path includes a basal restrictor tube.

5. The device of claim 4, wherein the basal restrictor tube is dimensioned to allow a fluid flow through the first flow path at the basal rate of flow.

6. The device of claim 1, wherein the device is configured to allow filling of the bolus reservoir while the fluid is being delivered to the patient via the first flow path.

7. The device of claim 1, wherein the bolus filling rate is preselected based on a desired amount of time needed to fill the bolus reservoir with the fluid from the fluid source via the first branch of the second flow path.

8. The device of claim 1, wherein, in the standby mode, the fluid flows between the fluid source and the bolus reservoir via the first branch of the second flow path until the bolus reservoir is filled.

9. The device of claim 1, wherein the actuator is selectively rotatable to place the device in each of the at least three modes.

10. The device of claim 1, wherein the bolus valve and the branch valve are pinch tubes.

11. The device of claim 1, wherein the actuator is a knob operable by the patient.

12. The device of claim 1, wherein the fluid source is an infusion pump.

13. The device of claim 1, wherein the actuator is operable by the patient and restrains an ability of the patient to induce an overdose.

14. The device of claim 1, wherein after a bolus dose is delivered, the device provides for a lock-out period before a next bolus dose can be delivered.

15. A method for controlling delivery of a fluid from a fluid source to a patient using a device having a first flow path and a second flow path parallel to the first flow path, the method comprising:

providing the fluid at a basal rate of flow to the patient via the first flow path;

providing the fluid at a bolus filling rate of flow to a bolus reservoir via a bolus restrictor tube located within a first branch of the second flow path;

actuating a bolus valve and a branch valve with a single actuator to operably select each of at least three modes of operation, the at least three modes of operation including a priming mode, a fill mode, and a standby mode;

the priming mode selected by the actuator opening the bolus valve and the branch valve such that the fluid flows through the first flow path, the first branch of the second flow path, and a second branch of the second flow path;

the fill mode selected by the actuator closing the bolus valve and opening the branch valve such that the fluid flows from the fluid source to the bolus reservoir via the second branch of the second flow path;

the standby mode selected by the actuator closing the bolus valve and the branch valve such that the fluid flows between the fluid source and the patient via the first flow path; and

in response to actuation of the bolus valve by the actuator, delivering a bolus dose of the fluid to the patient via the second flow path, the bolus dose being provided by opening with the actuator the bolus valve to release the bolus dose from the bolus reservoir, the bolus valve disposed along the second flow path.

16. The method of claim 15, wherein allowing the delivery of the fluid stored in the bolus reservoir includes opening the bolus valve disposed along the second flow path, wherein the bolus valve disposed along the second flow path is positioned between the bolus reservoir and the patient.

17. The method of claim 15, further comprising filling the bolus reservoir with the fluid from the fluid source while the fluid is being provided to the patient via the first flow path.

18. A device for controlling delivery of a fluid from a fluid source to a patient, the device comprising:

a first flow path between the fluid source and the patient, the first flow path for delivering the fluid from the fluid source to the patient at a basal rate of flow;

a second flow path between the fluid source and the patient, the second flow path including;

a bolus reservoir;

a bolus valve disposed between the bolus reservoir and the patient;

a first branch including a bolus restrictor tubing in which the fluid source is in fluid communication at a bolus filling rate with the bolus reservoir and the bolus valve; and

a second branch including a branch valve, and not including the bolus restrictor tubing, in which the fluid source is in fluid communication with the bolus reservoir and the bolus valve; and

an actuator that is selectively rotatable to place the device in each of the following modes;

a priming mode in which, when selected by the actuator, the actuator opens the bolus valve and the branch valve and the fluid flows through the first flow path, the first branch of the second flow path, and the second branch of the second flow path;

a fill mode in which, when selected by the actuator, the actuator closes the bolus valve, opens the branch valve, and the fluid flows from the fluid source to the bolus reservoir via the second branch of the second flow path; and

a standby mode in which, when selected by the actuator, the actuator closes the bolus valve and the branch valve and the fluid flows between the fluid source and the patient via the first flow path.