Prosthetic occlusive device for an internal passageway

• US 4,408,597 A
• Filed: 04/23/1982
• Issued: 10/11/1983
• Est. Priority Date: 04/23/1982
• Status: Expired due to Term

• Current Assignee: United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration
• Original Assignee: United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration
• Inventors: Tenney, John B. Jr.
• Primary Examiner(s): Cohen, Lee S.
• Assistant Examiner(s): Fukushima, Christine A.
• Application Number:
  US06/371,352
• Time in Patent Office: 536 Days
• Field of Search: 128/1 R, 128/DIG. 25, 128/325, 128/344, 128/346, 128/686, 128/24 R, 128/327, 128/DIG. 20, 604/101
• US Class Current: 600/31
• CPC Class Codes: A61F 2/004 inflatable
• CPC Class Codes: Y10S 128/25 Artificial sphincters and devices for controlling urinary incontinence

Abstract

An occlusive device is disclosed for surgical implant to occlude the lumen of an internal organ. The device includes a cuff A having a backing collar (10) and two isolated cuff chambers B and C. The fluid pressure of chamber B is regulated by a pump/valve reservoir unit E. Chamber C is unregulated in pressure but its fluid volume is adjusted by removing or adding fluid to a septum/reservoir D by means of a hypodermic needle. Pressure changes are transmitted between the two cuff chambers via faying surfaces (12) and (14) which are sufficiently large in contact area and thin as to transmit pressure generally without attenuation. By adjusting the fluid volume of septum D, the operating pressure of the device may be adjusted to accommodate tubular organs of different diameter sizes as well as to compensate for changes in the organ following implant without re-operation.

Claims

1. An occlusive cuff device for surgical implantation in the human body for the purpose of opening and closing an internal passageway in a tubular organ and the like comprising:

cuff means including a first and second isolated cuff pressure chamber;

said first cuff chamber being regulated and pressurizable for effectively occluding said passageway of said tubular organ;

said second cuff chamber being unregulated during normal operation of said device;

each said cuff chamber including a faying surface in which said passageway is receivably fitted;

a deformation resistant cuff collar encircling said two cuff chambers; and

a fluid containing septum means in fluid communication with said second cuff chamber adapted for subcutaneous placement so that the fluid volume of said septum means and hence said second chamber may be adjusted accordingly by means penetrating the skin to accommodate use on organs of different diameter sizes and to compensate for changing organ conditions without re-operation.

2. The device of claim 1 wherein said collar is split having free ends accommodating placement thereof over said organ and including latch means for securing said ends of said cuff collar together.

3. The device of claim 1 including pump/valve means connected to said first cuff chamber for selectively regulating and pressurizing said first cuff chamber for occluding said passageway.

4. The device of claim 1 wherein said first and second cuff chambers comprise thin wall flexible material.

5. The device of claim 1 wherein said faying surfaces are of sufficient dimension and contact with one another as to cause the pressure changes to be transmitted across said faying surfaces from either cuff chamber without significant attenuation of said pressure.

6. The device of claim 1 wherein said faying surfaces are in contact over an area generally equivalent to the area defined by the diameter of said cuff collar and its width.