Patent US5722932A successfully refreshed from Google Patents.
US5722932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonsurgical intraurethral bladder control device
Assignee: Feelsure Health Corp
•
Filing: 1996-04-23
•
Granted: 1998-03-03
•
Expires: 2016-04-23
Abstract
Abstract An improved self contained automatic bladder control device includes a valve assembly mount for releasibly receiving a valve assembly. The preferably cylindrical mount has a textured outer surface designed to interact with urethral tissue. Thus the mount can be placed nonsurgically into a urethra and in time it will be held against movement by the tissue interaction with the textured outer surface, yet the mount will still be removable without surgery. Two embodiments of valve assemblies are disclosed, each of which provides a sphincter-like operation of the bladder control apparatus. A first embodiment is designed to use Bernoulli's law to hold open the valve apparatus after a short period of muscle contraction. The second embodiment is designed to use the fact that the force generated by hydrostatic pressure is directly related to the area on which it impinges, to accomplish the desired valve holding period.
Inventors
- 👤 Andre A. Kulisz
- 👤 Valery Migachyov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:57
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/0004; A61F2/0022; A61B; A61B90/00; A61B90/06; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7738; Y10T137/7781; Y10T137/7832; Y10T137/7837; Y10T137/7838; Y10T137/7846; Y10T137/8593; Y10T137/87917; Y10T137/87981; Y10T137/87989
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
149 words
In a method of controlling fluid flow with a bladder control apparatus adapted to be placed in a urethra including a valve block having a valve with open and closed positions and a fluid flow path through the valve block, and further including adjustment control means for setting the pressures at which the valve will open and close, the method of controlling fluid flow comprising the steps of: normally biasing the valve in the closed position; setting the valve opening and closing pressures; moving the valve to the open position when the hydrostatic pressure in the urethra exceeds the opening pressure set level; inducing a negative pressure from means in the fluid flow path according to Bernoulli's principle; holding the valve in the open position with the negative pressure; and moving the valve to the closed position when the induced negative pressure falls below the closing pressure set level.
Claim 2
Dependent Claim
149 words
In a method of controlling fluid flow with a bladder control apparatus adapted to be placed in a urethra including a valve block having a valve with open and closed positions and a fluid flow path through the valve block, and further including adjustment control means for setting the pressures at which the valve will open and close, the method of controlling fluid flow comprising the steps of: normally biasing the valve in the closed position; setting the valve opening and closing pressures; moving the valve to the open position when the hydrostatic pressure in the urethra exceeds the opening pressure set level; inducing a negative pressure from means in the fluid flow path according to Bernoulli's principle; holding the valve in the open position with the negative pressure; and moving the valve to the closed position when the induced negative pressure falls below the closing pressure set level.
Claim 3
Dependent Claim
33 words
The method of claim 1 including operating the adjustment control means from a point external to the body by setting the valve opening and closing pressures from a point external to the body.
Claim 4
Dependent Claim
26 words
The method of claim 2 including the step of preventing movement of the normally closed valve due to an abrupt change in the urethral hydrostatic pressure.
Claim 5
Dependent Claim
26 words
The method of claim 1 including the step of preventing movement of the normally closed valve due to an abrupt change in the urethral hydrostatic pressure.
Claim 6
Dependent Claim
32 words
The method of claim 1 including the steps of opening the valve for increasing the area of fluid flow impingement, and holding the valve open responsive to pressure from fluid flow impingement.
References Cited (Backward Citations)
US3731670A
Cited
US3812841A
Cited
US4553533A
Cited
US4679546A
Cited
US5112306A
Cited
US4934999A
Cited
US5007898A
Cited
US5097848A
Cited
US4969474A
Cited
US5012822A
Cited
US5123428A
Cited
US4955858A
Cited
US4968294A
Cited
US5007894A
Cited
US5041092A
Cited
US5078676A
Cited
US5114398A
Cited
US5088980A
Cited
US5090424A
Cited
US5140999A
Cited
US5512032A
Cited
WO1996018431A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-03-02 | 2001-09-01 | 2002-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-02 | 2005-09-01 | 2006-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-02 | 2009-09-01 | 2010-03-03 | $7700.00 | Window Closed / Lapsed |