COMPENSATION DEVICE FOR SETTING FLOW RATE OF INFUSION SOLUTION, DEVICE FOR AUTOMATICALLY CONTROLLING FLOW RATE OF INFUSION SOLUTION, AND METHOD FOR CONTROLLING OPTIMAL TARGET FLOW RATE USING FLOW RATE COEFFICIENT OF FLOW RATE CONTROLLER

• US 20160256628A1
• Filed: 02/27/2014
• Published: 09/08/2016
• Est. Priority Date: 08/16/2013
• Status: Active Application

• Current Assignee: Hanvit Md Co., Ltd.
• Original Assignee: Dooyong Lee, Hanvit Md Co., Ltd.
• Inventors: LEE, DOOYONG, PARK, Poomin
• Granted Patent: US 10,265,469 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61M 2205/3306 Optical measuring means
• CPC Class Codes: A61M 2205/52 with memories providing a history of measured variating parameters of apparatus or patient
• CPC Class Codes: A61M 2205/70 with testing or calibration facilities
• CPC Class Codes: A61M 5/16877 Adjusting flow; Devices for setting a flow rate
• CPC Class Codes: A61M 5/16881 Regulating valves on-off valves, e.g. clamps A61M39/28
• CPC Class Codes: A61M 5/16886 for measuring fluid flow rate, i.e. flowmeters
• CPC Class Codes: A61M 5/172 electrical or electronic A61M5/16804, A61M5/16831 take precedence
• CPC Class Codes: G05D 7/0617 specially adapted for fluid materials
• CPC Class Codes: G05D 7/0635 by action on throttling means G05D7/0688, G05D7/0694 take precedence

Abstract

The present invention relates to a compensation device for setting a flow rate of an infusion solution, a device for automatically controlling the flow rate of the infusion solution, and a method for controlling an optimal target flow rate using a flow rate coefficient of a flow rate controller, the compensation device adjusting a display scale of an infusion solution flow rate controller corresponding to a target flow rate on the basis of a one-time actually measured flow rate in setting the target flow rate by controlling an infusion solution flow rate controller of an infusion solution. More particularly, the present invention relates to a compensation device for setting a flow rate of an infusion solution, a device for automatically controlling the flow rate of the infusion solution, and a method for controlling an optimal target flow rate using a flow rate coefficient of a flow rate controller, the compensation device obtaining a display scale of an infusion solution flow rate controller for a target flow rate after estimating the installation condition of an infusion solution, set through a one-time actually measured flow rate, on the basis of fluctuation information of the flow rate according to change in the installation condition of the infusion solution set and the position of the display scale of the infusion solution flow rate controller, by classifying a factor affecting the flow rate as the position of the display scale of the infusion solution flow rate controller and the installation condition of the infusion solution set.

Claims

1. A compensation device for setting a flow rate of an infusion solution, obtaining a display gradation to be indicated by a manipulating unit 41 to administer a target flow rate of the infusion solution according to a prescription of infusion solution treatment in an infusion solution set 2 including an infusion solution flow rate controller 40 having display gradations marked within a manipulation range of the manipulating unit 41 to allow for adjustment of the flow rate of the infusion solution as a display gradation indicated by the manipulating unit 41 is varied, the compensation device comprising:

an input unit 110 for obtaining an initial gradation indicated by the manipulating unit 41 and an actually measured flow rate obtained by performing measurement while the manipulating unit 41 indicates the initial gradation;

a memory 130 storing a value for a coefficient C for each display gradation obtained by putting measured values of a contextual variable X and a flow rate Q in a preset equation among a measurable contextual variable X varying depending on an installation state of the infusion solution set 2, a coefficient C varying the display gradation indicated by the manipulating unit 41, and a flow rate Q of the infusion solution administered through the infusion solution set 2;

a set value calculator 150 putting a value C₁ of the coefficient C corresponding to the initial gradation and the actually measured flow rate in the equation to obtain a value X₁ of the contextual variable X and then putting the obtained value X₁ of the contextual variable X and the target flow rate in the equation to obtain a value C₂ of the coefficient C; and

an output unit 120 outputting a display gradation corresponding to the value C₂ of the coefficient C obtained by the set value calculator 150.

2. The compensation device of claim 1, wherein the equation is Q=CX which indicates that the flow rate Q is proportional to each of the contextual variable X and the coefficient C.

3. The compensation device of claim 2, wherein the contextual variable X is a difference in water level between an infusion solution bottle 1 and an injection needle 30 determined depending on the installation state of the infusion solution set 2.

4. The compensation device of claim 2, wherein the contextual variable X is a difference in height between an infusion solution bottle 1 and an injection needle 30 determined depending on the installation state of the infusion solution set 2.

5. The compensation device of claim 3, wherein the input unit 110 may omit the input of the initial gradation by allowing the initial gradation to be the same as the target flow rate.

6. The compensation device of claim 3, wherein the input unit 110 is configured to include a flow rate calculator 140 configured to receive count inputs for drops falling in a dropping container of the infusion solution set 2 and to obtain an actually measured flow rate by multiplying the number of drops per unit time according to a time difference of the count inputs by a preset drop volume, wherein the preset drop volume is set per magnitude of the number of drops per unit time, and wherein the flow rate calculator 140 obtains the actually measured flow rate by multiplying the drop volume corresponding to the magnitude of the number of drops per unit time by the number of drops per unit time.

18. The compensation device of claim 4, wherein the input unit 110 may omit the input of the initial gradation by allowing the initial gradation to be the same as the target flow rate.

19. The compensation device of claim 4, wherein the input unit 110 is configured to include a flow rate calculator 140 configured to receive count inputs for drops falling in a dropping container of the infusion solution set 2 and to obtain an actually measured flow rate by multiplying the number of drops per unit time according to a time difference of the count inputs by a preset drop volume, wherein the preset drop volume is set per magnitude of the number of drops per unit time, and wherein the flow rate calculator 140 obtains the actually measured flow rate by multiplying the drop volume corresponding to the magnitude of the number of drops per unit time by the number of drops per unit time.

7. A method for adjusting an optimal target flow rate using a flow rate coefficient of a flow rate controller to adjust a flow rate of an infusion solution using a compensation device for setting the flow rate of the infusion solution, the compensation device storing a value for a coefficient C for each display gradation obtained by putting measured values of a contextual variable X and a flow rate Q in a preset equation among a measurable contextual variable X varying depending on an installation state of the infusion solution set 2, a coefficient C varying the display gradation indicated by the manipulating unit 41, and a flow rate Q of the infusion solution administered through the infusion solution set 2 in an infusion solution set 2 including an infusion solution flow rate controller 40 having display gradations marked within a manipulation range of the manipulating unit 41 to allow for adjustment of the flow rate of the infusion solution as a display gradation indicated by the manipulating unit 41 is varied, the method comprising:

a target flow rate input step receiving a target flow rate determined according to a prescription of infusion solution treatment;

an initial gradation input step receiving an initial gradation indicated by the manipulating unit 41;

an actually measured flow rate obtaining step obtaining an actually measured flow rate obtained by performing measurement while the manipulating unit 41 indicates the initial gradation;

a contextual variable obtaining value obtaining a value X₁ of the contextual variable X by putting a value C₁ of the coefficient C corresponding to the initial gradation and the actually measured flow rate in the equation;

a coefficient obtaining step obtaining a value C₂ of the coefficient C by putting the value X₁ of the contextual variable X obtained in the contextual variable obtaining step and the target flow rate in the equation; and

an infusion solution flow rate setting step outputting a display gradation corresponding to the value C₂ of the coefficient C obtained in the coefficient obtaining step and allowing the manipulating unit 41 to indicate the output display gradation.

8. The method of claim 7, wherein the equation is Q=CX which indicates that the flow rate Q is proportional to each of the contextual variable X and the coefficient C.

9. The method of claim 8, wherein the contextual variable X is a difference in water level between an infusion solution bottle 1 and an injection needle 30 determined depending on the installation state of the infusion solution set 2.

10. The method of claim 8, wherein the contextual variable X is a difference in height between an infusion solution bottle 1 and an injection needle 30 determined depending on the installation state of the infusion solution set 2.

11. The method of claim 9, wherein the initial gradation input step is omitted by allowing the initial gradation to be the same as the target flow rate.

20. The method of claim 10, wherein the initial gradation input step is omitted by allowing the initial gradation to be the same as the target flow rate.

12. An automatic infusion solution flow rate controller, comprising:

a flow rate sensor 320 mounted in an infusion solution set 2 in which an infusion solution flow rate controller 40 varying a flowpath according to a manipulation position of a manipulating unit 41 to adjust a flow rate of an infusion solution is provided in a tube 20, the flow rate sensor 320 detecting a flow rate of the infusion solution;

an electromotive device 330 adjusting the manipulation position of the manipulating unit 41; and

a control device 310 controlling the electromotive device 330 to adjust the flow rate, wherein the control device 310 includes;

an input unit 311 receiving a target flow rate;

a memory 313 storing, per manipulation position of the manipulating unit 41, a value of a coefficient C obtained by putting measured values of a contextual variable X and a flow rate Q in a preset equation among a measurable contextual variable X varying according to an installation state of the infusion solution set 2, a coefficient C varying depending on the manipulation position of the manipulating unit 41, and a flow rate Q of the infusion solution administered through the infusion solution set 2; and

a controller 314, when receiving a target flow rate, controlling the electromotive device 330 to obtain an actually measured flow rate using the flow rate sensor 320 while the manipulating unit 41 is adjusted to a preset initial manipulation position, obtaining a value C₁ of the coefficient C corresponding to the initial manipulation position and the actually measured flow rate in the equation to obtain a value X₁ of the contextual variable X and then putting the value X₁ of the contextual variable X and the target flow rate in the equation to obtain a value C₂ of the coefficient C, and controlling the electromotive device 330 to adjust the manipulating unit 41 to a manipulation position corresponding to the value C₂ of the coefficient C.

13. The automatic infusion solution flow rate controller of claim 12, wherein the equation is Q=CX which indicates that the flow rate Q is proportional to each of the contextual variable X and the coefficient C.

14. The automatic infusion solution flow rate controller of claim 13, wherein the contextual variable X is a difference in water level between an infusion solution bottle 1 and an injection needle 30 determined depending on the installation state of the infusion solution set 2.

15. The automatic infusion solution flow rate controller of claim 13, wherein the contextual variable X is a difference in height between an infusion solution bottle 1 and an injection needle 30 determined depending on the installation state of the infusion solution set 2.

16. The automatic infusion solution flow rate controller of claim 12, wherein the controller 314, after adjusting the manipulating unit 41 to the manipulation position corresponding to the value C₂ of the coefficient C, checks a variation in flow rate detected by the flow rate sensor 320, and if a difference from the target flow rate becomes larger than a preset allowable difference, puts the detected flow rate and the value C₂ of the coefficient C in the equation to obtain a value X₂ of the contextual variable X and then puts the value X₂ of the contextual variable X and the target flow rate in the equation to obtain a value C₃ of the coefficient C, and controls the electromotive device 330 to adjust the manipulating unit 41 to a manipulation position corresponding to the value C₃ of the coefficient C.

17. The automatic infusion solution flow rate controller of claim 12, wherein the flow rate sensor 320 detachably holds a dropping container 10 of the infusion solution set 2, allows light from a light emitting device to pass through the dropping container 10 and to be received by a light receiving device, and counts drops according to whether the light is disturbed by the drops, wherein the controller 314 calculates a flow rate based on the counted drops, and wherein the electromotive device 330 includes a means to detachably hold the infusion solution flow rate controller 40 and adjusts the manipulation position of the manipulating unit 41 under control of the controller 314 while holding the infusion solution flow rate controller 40.

21. The automatic infusion solution flow rate controller of claim 13, wherein the controller 314, after adjusting the manipulating unit 41 to the manipulation position corresponding to the value C₂ of the coefficient C, checks a variation in flow rate detected by the flow rate sensor 320, and if a difference from the target flow rate becomes larger than a preset allowable difference, puts the detected flow rate and the value C₂ of the coefficient C in the equation to obtain a value X₂ of the contextual variable X and then puts the value X₂ of the contextual variable X and the target flow rate in the equation to obtain a value C₃ of the coefficient C, and controls the electromotive device 330 to adjust the manipulating unit 41 to a manipulation position corresponding to the value C₃ of the coefficient C.

22. The automatic infusion solution flow rate controller of claim 14, wherein the controller 314, after adjusting the manipulating unit 41 to the manipulation position corresponding to the value C₂ of the coefficient C, checks a variation in flow rate detected by the flow rate sensor 320, and if a difference from the target flow rate becomes larger than a preset allowable difference, puts the detected flow rate and the value C₂ of the coefficient C in the equation to obtain a value X₂ of the contextual variable X and then puts the value X₂ of the contextual variable X and the target flow rate in the equation to obtain a value C₃ of the coefficient C, and controls the electromotive device 330 to adjust the manipulating unit 41 to a manipulation position corresponding to the value C₃ of the coefficient C.

23. The automatic infusion solution flow rate controller of claim 15, wherein the controller 314, after adjusting the manipulating unit 41 to the manipulation position corresponding to the value C₂ of the coefficient C, checks a variation in flow rate detected by the flow rate sensor 320, and if a difference from the target flow rate becomes larger than a preset allowable difference, puts the detected flow rate and the value C₂ of the coefficient C in the equation to obtain a value X₂ of the contextual variable X and then puts the value X₂ of the contextual variable X and the target flow rate in the equation to obtain a value C₃ of the coefficient C, and controls the electromotive device 330 to adjust the manipulating unit 41 to a manipulation position corresponding to the value C₃ of the coefficient C.

24. The automatic infusion solution flow rate controller of claim 13, wherein the flow rate sensor 320 detachably holds a dropping container 10 of the infusion solution set 2, allows light from a light emitting device to pass through the dropping container 10 and to be received by a light receiving device, and counts drops according to whether the light is disturbed by the drops, wherein the controller 314 calculates a flow rate based on the counted drops, and wherein the electromotive device 330 includes a means to detachably hold the infusion solution flow rate controller 40 and adjusts the manipulation position of the manipulating unit 41 under control of the controller 314 while holding the infusion solution flow rate controller 40.

25. The automatic infusion solution flow rate controller of claim 14, wherein the flow rate sensor 320 detachably holds a dropping container 10 of the infusion solution set 2, allows light from a light emitting device to pass through the dropping container 10 and to be received by a light receiving device, and counts drops according to whether the light is disturbed by the drops, wherein the controller 314 calculates a flow rate based on the counted drops, and wherein the electromotive device 330 includes a means to detachably hold the infusion solution flow rate controller 40 and adjusts the manipulation position of the manipulating unit 41 under control of the controller 314 while holding the infusion solution flow rate controller 40.

26. The automatic infusion solution flow rate controller of claim 15, wherein the flow rate sensor 320 detachably holds a dropping container 10 of the infusion solution set 2, allows light from a light emitting device to pass through the dropping container 10 and to be received by a light receiving device, and counts drops according to whether the light is disturbed by the drops, wherein the controller 314 calculates a flow rate based on the counted drops, and wherein the electromotive device 330 includes a means to detachably hold the infusion solution flow rate controller 40 and adjusts the manipulation position of the manipulating unit 41 under control of the controller 314 while holding the infusion solution flow rate controller 40.