Programmable flexible-tube flow regulator and use methods

• US 20020139419A1
• Filed: 04/02/2002
• Published: 10/03/2002
• Est. Priority Date: 04/02/2001
• Status: Abandoned Application

• Current Assignee: The Hook Research Foundation
• Original Assignee: The Hook Research Foundation
• Inventors: Flinchbaugh, David E.
• Application Number:
  US10/114,792
• Publication Number:
  US 20020139419A1
• Time in Patent Office: Days
• US Class Current: 137/557
• CPC Class Codes: A61M 2025/0056 provided with an antibacterial agent, e.g. by coating, residing in the polymer matrix or releasing an agent out of a reservoir
• CPC Class Codes: A61M 2205/04 implanted
• CPC Class Codes: A61M 2205/3331 Pressure; Flow
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: A61M 2210/1085 Bladder
• CPC Class Codes: A61M 25/0075 Valve means
• CPC Class Codes: A61M 25/04 in the body, e.g. expansible A61M25/10, A61M16/0488 take precedence
• CPC Class Codes: A61M 39/28 Clamping means for squeezing flexible tubes, e.g. roller clamps tube strippers A61M1/83
• CPC Class Codes: A61M 5/16813 by controlling the degree of opening of the flow line
• CPC Class Codes: A61M 5/16881 Regulating valves on-off valves, e.g. clamps A61M39/28
• CPC Class Codes: F16K 31/04 using a motor
• CPC Class Codes: F16K 37/0091 by measuring fluid parameters
• CPC Class Codes: F16K 7/06 by means of a screw-spindle, cam, or other mechanical means F16K7/045 takes precedence
• CPC Class Codes: Y10T 137/7758 Pilot or servo controlled
• CPC Class Codes: Y10T 137/8326 Fluid pressure responsive indicator, recorder or alarm

Abstract

Programmable methods and apparatus for providing flow control in valves. In a preferred embodiment flow control occurs by pressing opposite sides of a very flexible tube section together to selectively, and programmably, closing and opening the flow pathway. Linear or rotary cam electrically motorized members provide valve function without requiring fluid flow through the valve. Alternatively, micro-fluidic amplifiers and fluidic logic circuits can be used to sense and control fluid pressure in a pre-calculated proportional flow regulation pattern. The invention can be used in medical, hospital, clinic and home-care units for bladder cycling a patient whose urinary tracts have an indwelling catheter, utilizing a pressure transducer that opens and closes the valve in accordance with preprogrammed pressure buildup or time intervals. Other uses include a medical infusion subsystem by regulating flow of fluid from a medication reservoir into the blood or into a digestive system. Electromechanical and electrochemical sensors coupled by tubing to reservoirs can collect electromechanical data. Additional uses can include industrial and consumer applications can include kidney dialysis, heart catheters, and neutral or cranial stents, and the like, can be additional medical areas for specific computer-chip controlled flow regulation units. Displays and/or parameter warning indicators can also be used.

Claims

1. A method of controlling fluid flow through tubes, comprising the steps of:

clamping a continuous longitudinal pliable tube to a side of a measuring unit;

sensing fluid flowing through the continuous longitudinal tube by sensing an exterior side wall portion of the tube; and

regulating the fluid flowing through the tube by exerting pressure on another exterior side wall portion of the tube to form an opening and closing valve, wherein the steps of clamping, sensing and regulating the fluid occur without removing portions of fluid from the fluid flow pathway passing through the tube.

2. The method of claim 1, further comprising the steps of:

connecting an upper end of the tube to a bladder; and

connecting a lower end of the tube to a disposition coupling, wherein the fluid includes urine.

3. The method of claim 1, further comprising the steps of:

connecting an upper end of the tube to a medication reservoir; and

connecting a lower end of the tube to a body insertion coupling, wherein the fluid includes medications.

4. The method of claim 1, further comprising the step of at least one of:

emitting a warning alarm when a selected pressure threshold has been sensed in the tube, and

displaying status information on the fluid flow through the tube.

5. The method of claim 1, further comprising the step of:

programmably opening and closing the valve with a timer.

6. The method of claim 1, further comprising the step of:

programmably opening and closing the valve with a selective pressure threshold.

7. The method of claim 1, wherein the step of sensing the fluid flowing includes the step of:

sensing pressure on the exterior side wall portion of the tube.

8. The method of claim 1, wherein the step of sensing the fluid flowing includes the step of:

chemically sensing the fluid through the exterior side wall portion of the tube.

9. The method of claim 1, wherein the step of sensing the fluid flowing includes the step of:

electrometrically sensing the fluid through the exterior side wall portion of the tube.

10. The method of claim 1, wherein the step of sensing the fluid flowing includes the step of:

optically sensing the fluid through the exterior side wall portion of the tube.

11. A programmable flexible-tube flow regulator, comprising:

means for clamping an exterior side portion of a continuous longitudinal flexible tube to a measuring unit;

means for sensing fluid flowing through the continuous longitudinal portion of the tube by sensing an exterior side wall portion of the tube in the unit; and

means for regulating fluid flowing through the tube by exerting pressure on another exterior side wall portion of the tube to form an opening and closing valve that controls the fluid flowing therethrough, wherein the clamping means, the sensing means and the regulating means occur without removing any portions of the fluid flowing through the tube.

12. The programmable regulator of claim 11, further comprising:

a bladder source connected to an upper end of the tube; and

a disposition coupling connected to a lower end of the tube.

13. The programmable regulator of claim 11, further comprising:

a medication reservoir connected to an upper end of the tube; and

a body insertion coupling connected to a lower end of the tube.

14. The programmable regulator of claim 11, further comprising at least one of:

means for emitting a warning alarm when a selected pressure threshold has been sensed in the tube, and

means for displaying status information on fluid flowing through the tube.

15. The programmable regulator of claim 11, further comprising:

a timer means for programmably opening and closing the valve.

16. The programmable regulator of claim 11, further comprising:

a pressure adjustment means selectively programming a selective pressure threshold for the opening and the closing of the valve.

17. The programmable regulator of claim 11, wherein the sensing means includes:

means for sensing pressure on the exterior side wall portion of the tube.

18. The programmable regulator of claim 11, wherein the sensing means includes:

means for chemically sensing the fluid through the exterior side wall portion of the tube.

19. The programmable regulator of claim 11, wherein the sensing means includes:

means for electrometrically sensing the fluid through the exterior side wall portion of the tube.

20. The programmable regulator of claim 11, wherein the sensing means includes:

means for optically sensing the fluid through the exterior side wall portion of the tube.