Controller valve device and method

• US 5,509,888 A
• Filed: 07/26/1994
• Issued: 04/23/1996
• Est. Priority Date: 07/26/1994
• Status: Expired due to Fees

• Current Assignee: Paul Leonard Miller
• Original Assignee: Conceptek Corporation
• Inventors: Miller, Paul L.
• Primary Examiner(s): Sykes, Angela D.
• Assistant Examiner(s): Lacyk, John P.
• Application Number:
  US08/281,226
• Time in Patent Office: 637 Days
• Field of Search: 600/29-32, 600/38-41, 128/DIG. 25
• US Class Current: 600/29
• CPC Class Codes: A61B 17/12 for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord specially adapted for vas deferens or fallopian tubes A61F6/20; materials for ligaturing blood vessels A61L17/00
• CPC Class Codes: A61B 2017/00017 Electrical control of surgical instruments
• CPC Class Codes: A61F 2/0036 implantable A61F2/0018 takes precedence
• CPC Class Codes: Y10S 128/25 Artificial sphincters and devices for controlling urinary incontinence

Abstract

Device and method for regulating fluid flow within the human body includes small electromagnetic devices embedded in an inner housing of the present device that function under the control of a programmable control unit to create small magnetic fields which cause an artificial increase in the viscosity and apparent density of a magnetorheological fluid located in a compartment surrounding the structure through which fluid flow is to be controlled.

Claims

1. A controllable valve apparatus for operation about a constrictable passageway, comprising:

A. a flexible, formable, tubular housing adapted to be positioned around the passageway, including;

(i) an extensible inner chamber extending at least partially along an outer surface of the housing, and

(ii) at least one magnetic flux inductor device proximal to the inner chamber;

B. a control device in communication with the magnetic flux inductor device for selectively activating the magnetic flux inductor device; and

C. a quantity of a magnetorheological material responsive to activation of the magnetic flux inductor and contained within the inner chamber to cause the magnetorheological material to outwardly extend the inner chamber and constrict the passageway.

2. The valve apparatus of claim 1, wherein the tubular housing of predetermined length forms an open circle adapted to position the tubular housing around the passageway to be constricted.

3. The valve apparatus of claim 1, wherein the magnetorheological material further comprises a suspension of magnetic material.

4. The valve apparatus of claim 3, wherein the magnetorheological material further comprises an inert liquid suspension medium.

5. The valve apparatus of claim 3, wherein the magnetorheological material further comprises a quantity of ferrous microspheres.

6. The valve apparatus of claim 5, wherein the magnetorheological material further comprises an inert paraffinic suspension medium.

7. The valve apparatus of claim 1, wherein the magnetic flux inductor device comprises a magnetic material.

8. The valve apparatus of claim 1, further comprising a plurality of magnetic flux inductor devices proximal to the inner chamber.

9. The valve apparatus of claim 1, wherein the control device further comprises a programmable element for selectively controlling the magnetic flux inductor.

10. A prosthetic urinary incontinence apparatus for controllably constricting the urethra, comprising:

A. a flexible, formable, tubular housing adapted to be positioned around the urethra, including;

(i) an extensible inner chamber extending at least partially along an outer surface of the housing, and

(ii) at least one magnetic flux inductor device proximal to the inner chamber;

B. a control device in communication with the magnetic flux inductor device, for selectively activating the magnetic flux inductor device; and

C. a quantity of a magnetorheological material responsive to activation of the magnetic flux inductor and contained within the inner chamber to cause the magnetorheological material to outwardly extend the inner chamber about the urethra for controllable constriction thereof.

11. The valve apparatus of claim 10, wherein the tubular housing forms an open circle adapted to position the tubular housing around the urethra.

12. The valve apparatus of claim 10, wherein the magnetorheological material further comprises a suspension of magnetic material.

13. The valve apparatus of claim 12, wherein the magnetorheological material further comprises an inert liquid suspension medium.

14. The valve apparatus of claim 12, wherein the magnetorheological material further comprises a quantity of ferrous microspheres.

15. The valve apparatus of claim 14, wherein the magnetorheological material further comprises an inert paraffinic suspension medium.

16. The valve apparatus of claim 10, wherein the magnetic flux inductor device comprises a magnetic material.

17. The valve apparatus of claim 10, further comprising a plurality of magnetic flux inductor devices proximal to the inner chamber.

18. The valve apparatus of claim 10, wherein the control device further comprises a programmable element for selectively controlling the magnetic flux inductor.

19. A controllable valve apparatus for operation within an expandable passageway, comprising:

A. a flexible, formable, tubular housing adapted to be positioned within the passageway, including;

(i) an extensible chamber extending at least partially along an outer surface of the housing, and

(ii) at least one magnetic flux inductor device proximal to the chamber;

B. a control device in communication with the magnetic flux inductor device for selectively activating the magnetic flux inductor device; and

C. a quantity of a magnetorheological material responsive to activation of the magnetic flux inductor and contained within the chamber to cause the magnetorheological material to outwardly extend the chamber and expand the passageway.

20. The valve apparatus of claim 19, wherein the tubular housing forms an open circle adapted to position the tubular housing within a structure to be expanded.

21. The valve apparatus of claim 20, wherein the magnetorheological material further comprises a suspension of magnetic material.

22. The valve apparatus of claim 21, wherein the magnetorheological material further comprises an inert liquid suspension medium.

23. The valve apparatus of claim 21, wherein the magnetorheological material further comprises a quantity of ferrous microspheres.

24. The valve apparatus of claim 23, wherein the magnetorheological material further comprises an inert paraffinic suspension medium.

25. The valve apparatus of claim 19, wherein the magnetic flux inductor device comprises a magnetic material.

26. The valve apparatus of claim 19, further comprising a plurality of magnetic flux inductor devices proximal to the outer chamber.

27. The valve apparatus of claim 19, wherein the control device further comprises a programmable element for selectively Controlling the magnetic flux inductor.

28. A method of selectively controlling fluid flow through a constrictable structure using a flexible tubular housing, wherein the housing comprises:

an inner chamber, containing a quantity of magnetorheological material, extending at least partially along an outer surface of the housing; and

at least one magnetic flux inductor device proximal to the chamber;

the method comprising the steps of;

A. at least partially surrounding a selected portion of the structure with the flexible tubular housing; and

then

B. selectively expanding the housing by activating the inductor device to maintain the magnetorheological material in a first, expanded state to constrict the portion of the structure surrounded by the housing.

29. The method of claim 28, further comprising selectively contracting the housing by deactivating the inductor device to maintain the magnetorheological material in a second, relaxed state to allow the fluid flow through the constrictable structure.

30. A method of selectively controlling fluid flow through a constrictable structure using a flexible tubular housing, wherein the housing comprises:

an inner chamber, containing a quantity of a magnetorheological material, extending at least partially along the length of the housing; and

at least one magnetic flux inductor device, proximal to the chamber;

the method comprising the steps of;

A. at least partially surrounding a selected portion of the structure with the housing;

B. activating the magnetic flux inductor device to expand the magnetorheological material in the housing to constrict the portion of the structure surrounded by the housing; and

then

C. selectively deactivating the magnetic flux inductor device to release the constricted portion of the structure and to allow fluid flow through the structure.