Reprogrammable fluid delivery system and method of use

• US 20060184121A1
• Filed: 02/10/2006
• Published: 08/17/2006
• Est. Priority Date: 02/11/2005
• Status: Active Grant

• Current Assignee: Stryker Corporation
• Original Assignee: Stryker Corporation
• Inventors: Brockman, Christopher S., Foor, Jacob C., Strickler, Michael, Wasserman, Mark A., Hershberger, David E., Toman, Jason D.
• Granted Patent: US 8,147,451 B2
• Time in Patent Office: Days
• US Class Current: 604/151
• CPC Class Codes: A61M 2205/505 Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches
• CPC Class Codes: A61M 2209/045 for filling, e.g. for filling reservoirs
• CPC Class Codes: A61M 5/14216 Reciprocating piston type
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/172 electrical or electronic A61M5/16804, A61M5/16831 take precedence

Abstract

A fluid delivery system is provided for delivering fluid to a patient. The system comprises a reservoir for storing the fluid to be delivered to the patient and a fluid discharge device operatively coupled to the reservoir for delivering the fluid from the reservoir to the patient. A controller is configured to operate the fluid discharge device. An input device is in electronic communication with the controller and configured for setting at least one operating parameter of the system. The controller operates the fluid discharge device based on the at least one operating parameter and locks the system after the at least one operating parameter is set such that the at least one operating parameter is unable to be modified. A display is in electronic communication with the controller to at least periodically display a code for resetting the at least one operating parameter. The code is altered at least once during use. The controller is further configured to unlock the system upon receiving the code thereby allowing a user to reset the at least one operating parameter.

Claims

1. A system for delivering fluid to a patient, comprising:

a reservoir for storing the fluid to be delivered to the patient;

a fluid discharge device operatively coupled to said reservoir for delivering the fluid from said reservoir to the patient;

a controller configured for operating said fluid discharge device;

an input device in electronic communication with said controller and configured for setting at least one operating parameter of said system wherein said controller operates said fluid discharge device based on said at least one operating parameter and locks said system after said at least one operating parameter is set such that said at least one operating parameter is unable to be modified; and

a display in electronic communication with said controller and configured for at least periodically displaying a code wherein said code is altered on said display at least once during use of said system,

said controller being further configured for unlocking said system upon receiving said code thereby allowing a user to reset said at least one operating parameter.

2. A system as set forth in claim 1 wherein said code is associated with said at least one operating parameter.

3. A system as set forth in claim 2 wherein said at least one operating parameter includes a value and said code comprises at least a portion of said value.

4. A system as set forth in claim 1 wherein said input device is configured for setting a plurality of operating parameters, each of said plurality of operating parameters having a value and said code comprising at least a portion of each of said values.

5. A system as set forth in claim 4 wherein said plurality of operating parameters includes concentration, flow rate, bolus amount, and bolus lockout time.

6. A system as set forth in claim 5 including a countdown timer for counting down said bolus lockout time wherein said code is based on said countdown timer and is altered as said countdown timer changes time.

7. A system as set forth in claim 1 wherein said code is continuously displayed on said display.

8. A system as set forth in claim 7 wherein said code is altered at predetermined time intervals.

9. A system as set forth in claim 1 including a housing for supporting said reservoir, said fluid discharge device, said controller, and said input device.

10. A system as set forth in claim 1 wherein said input device includes at least one touch sensitive element for entering said code into said controller using said input device.

11. A system as set forth in claim 1 wherein said system is portable and configured to be carried by a patient.

12. A system as set forth in claim 1 wherein said input device is configured for setting a plurality of operating parameters, each of said plurality of operating parameters having a value and said code being displayed on said display in a predetermined pattern that includes at least a portion of each of said values.

13. A method of delivering fluid to a patient from a fluid delivery system, said method comprising the steps of:

setting at least one operating parameter of the system;

locking the system after setting the at least one operating parameter such that the at least one operating parameter is unable to be modified;

delivering the fluid from the fluid delivery system to the patient based on the setting of the at least one operating parameter and while the system is locked;

displaying a code at least periodically on the system;

altering the code displayed at least once while delivering the fluid to the patient;

inputting the code into the system after the code has been displayed; and

unlocking the system upon inputting the code into the system thereby allowing a user to reset the at least one operating parameter.

14. A method as set forth in claim 13 wherein inputting the code into the system includes entering the code using an input device and transmitting the entered code to a controller.

15. A method as set forth in claim 13 wherein displaying the code at least periodically on the system is further defined as continuously displaying the code on a display of the system.

16. A method as set forth in claim 13 including setting a plurality of operating parameters of the system and associating the code with each of the plurality of operating parameters.

17. A method as set forth in claim 13 including relocking the system after the user has reset the at least one operating parameter.

18. A system for delivering fluid to a patient, comprising:

a reservoir for storing the fluid to be delivered to the patient;

a fluid discharge device including a fluid conduit for delivering the fluid from said reservoir and through said fluid conduit to the patient;

a controller configured for operating said fluid discharge device; and

a detection circuit including at least one thermal element thermally coupled to said fluid conduit wherein said controller measures a first value of a measurable parameter of said detection circuit in a first condition and a second value of said measurable parameter in a second condition and said controller is configured for determining the presence of fluid moving through said fluid conduit based on said first and second values.

19. A system as set forth in claim 18 wherein measurable parameter is a voltage of said detection circuit and said controller measures said first value of said voltage when said fluid discharge device is not operating to deliver the fluid through said fluid conduit and said controller measures said second value of said voltage when said fluid discharge device is operating to deliver the fluid through said fluid conduit such that said controller can determine a drop in voltage between said first and second conditions and correlate said drop in voltage to the amount of fluid moving through said fluid conduit.

20. A system for delivering fluid to a patient, comprising:

a housing;

a reservoir supported by said housing for storing the fluid to be delivered to the patient;

a fluid discharge device operatively coupled to said reservoir for delivering the fluid from said reservoir to the patient;

a delivery port in fluid communication with said fluid discharge device for receiving the fluid from said fluid discharge device and directing the fluid to the patient; and

a refill valve in fluid communication with said reservoir and including a valve body snap-locked to said housing and a septum member for receiving a fluid filling device to refill said reservoir with fluid.