Patent US3598124A successfully refreshed from Google Patents.
US3598124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drainage control
Assignee: HW Andersen Products Inc
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Filing: 1968-02-01
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Granted: 1971-08-10
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Expires: 1988-02-01
Abstract
Abstract A method and apparatus for urinary drainage in which the normally closed system includes an adjustable upward course between the bladder and the downward course leading to a drainage receptacle, with the provision of venting means in the form of a one-way valve (e.g., flutter valve) in the upper portion of the system designated to admit atmospheric air cyclically when the flow of liquid in the downward course causes negative pressure in the upward course, whereby the system is periodically emptied and permitted to refill in a simulation of normal physiological filling and emptying of the bladder.
Inventors
- 👤 Harold Willids Andersen
- 👤 Charles Harvey Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:08
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/44; A61F5/441
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
245 words
The method of draining a body cavity of liquid to which the body normally supplies said liquid comprising providing a conduit means leading from said body cavity, said conduit comprising a length of tubing, supporting an intermediate section of said drainage tube at an elevated disposition to define a pinnacle in which an upstream side of said tubing leads from said body cavity generally upwardly to said pinnacle and a downstream side of said drainage tubing leads generally downwardly from said pinnacle to said receptacle, providing an air vent valve operable when open to admit air to said upstream side and when closed to preclude communication between the atmosphere and said upstream side, draining the liquid from said cavity to said upstream side of said tubing while maintaining said air vent valve in a closed position, allowing the liquid to fill said upstream side and thereafter to flow beyond said pinnacle into said downstream side, inducing a syphoning action in said Tubing by said flow, opening said air vent valve in response to the reduction of pressure in said upstream side of said tubing resulting from the syphoning action, introducing air at a controlled restricted rate into said upstream side through said air vent valve to overcome said reduction in pressure, and restoring said tubing to atmospheric pressure upon completion of the syphoning action, emptying said tubing and said body cavity by said syphoning action, and repeating the above cyclically to periodically drain said cavity.
Claim 2
Independent Claim
245 words
The method of draining a body cavity of liquid to which the body normally supplies said liquid comprising providing a conduit means leading from said body cavity, said conduit comprising a length of tubing, supporting an intermediate section of said drainage tube at an elevated disposition to define a pinnacle in which an upstream side of said tubing leads from said body cavity generally upwardly to said pinnacle and a downstream side of said drainage tubing leads generally downwardly from said pinnacle to said receptacle, providing an air vent valve operable when open to admit air to said upstream side and when closed to preclude communication between the atmosphere and said upstream side, draining the liquid from said cavity to said upstream side of said tubing while maintaining said air vent valve in a closed position, allowing the liquid to fill said upstream side and thereafter to flow beyond said pinnacle into said downstream side, inducing a syphoning action in said Tubing by said flow, opening said air vent valve in response to the reduction of pressure in said upstream side of said tubing resulting from the syphoning action, introducing air at a controlled restricted rate into said upstream side through said air vent valve to overcome said reduction in pressure, and restoring said tubing to atmospheric pressure upon completion of the syphoning action, emptying said tubing and said body cavity by said syphoning action, and repeating the above cyclically to periodically drain said cavity.
Claim 3
Dependent Claim
225 words
Apparatus for draining a body cavity of liquid to which the body normally supplies said liquid comprising conduit means leading from said body cavity to a receptacle, said conduit comprising a length of drainage tubing, means supporting an intermediate portion of said drainage tubing at an elevated disposition to define a pinnacle in which an upstream section of said tubing leads from said body cavity generally upwardly to said pinnacle and downstream section of said drainage tubing leads generally downwardly from said pinnacle to said receptacle, an air vent valve in said upstream section operable when open to admit air to said upstream section and when closed to preclude communication between the atmosphere and said upstream section, said valve closing upon an increase in pressure in said upstream section above atmosphere and opening upon a decrease in pressure in said upstream section below atmosphere, said valve being in said closed position while liquid drains from said cavity to said upstream section and opening in response to the reduction of pressure below atmosphere in said upstream section resulting from the syphoning action as the liquid fills said upstream section and flows past said pinnacle to said downstream section, whereby said valve admits air into said upstream section to overcome said reduction in pressure and restore said tubing to atmospheric pressure upon completion of the syphoning action.
Claim 4
Dependent Claim
225 words
Apparatus for draining a body cavity of liquid to which the body normally supplies said liquid comprising conduit means leading from said body cavity to a receptacle, said conduit comprising a length of drainage tubing, means supporting an intermediate portion of said drainage tubing at an elevated disposition to define a pinnacle in which an upstream section of said tubing leads from said body cavity generally upwardly to said pinnacle and downstream section of said drainage tubing leads generally downwardly from said pinnacle to said receptacle, an air vent valve in said upstream section operable when open to admit air to said upstream section and when closed to preclude communication between the atmosphere and said upstream section, said valve closing upon an increase in pressure in said upstream section above atmosphere and opening upon a decrease in pressure in said upstream section below atmosphere, said valve being in said closed position while liquid drains from said cavity to said upstream section and opening in response to the reduction of pressure below atmosphere in said upstream section resulting from the syphoning action as the liquid fills said upstream section and flows past said pinnacle to said downstream section, whereby said valve admits air into said upstream section to overcome said reduction in pressure and restore said tubing to atmospheric pressure upon completion of the syphoning action.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |