US4253457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urological endoscopic irrigation system
Assignee: Individual
•
Filing: 1979-08-03
•
Granted: 1981-03-03
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Expires: 1999-08-03
Abstract
Abstract A urological endoscopic irrigation system which consists of a reverse osmosis unit adapted for connection to an available hospital supply to produce at its output an available supply of nonpyrogenic water. The water is fed through a dionization chamber and final sterile filter into a reservoir bag which is supported on a weight switch so that the bag will be filled with a predetermined amount of filtered and nonpyrogenic fluid for use by a cystoscope. A reservoir and pump may be provided in the output line of the reverse osmosis unit to provide additional fluid capacity for the cystoscope.
Inventors
- 👤 Harold P. McDonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:36
CPC Classifications
A; A61; A61M; A61M3/00; A61M3/02; A61M3/0233; A61M3/025; A61B; A61B1/00; A61B1/12; A61M3/0204; A61M3/0208; A61M3/022; B; B01; B01D; B01D61/00; B01D61/02; B01D61/025; A61M2210/00; A61M2210/10; A61M2210/1078; A61M2210/1085; A61M2210/1089; B01D2311/00; B01D2311/06; B01D2313/00; B01D2313/50; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7339
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
95 words
An irrigation apparatus for dispensing fluid comprising: a reverse osmosis unit for connection to a conventional water supply for producing a substantially pyrogen-free fluid; final filter means coupled to the output of the reverse osmosis unit for filtering the fluid supply collected by the osmosis unit; reservoir container means coupled to the output of said filter means for holding a measured quantity of the fluid; and weight sensitive switch means supporting said reservoir container means whereby actuation of said switch means transfers quantities of fluid from said reverse osmosis unit to said reservoir container means
Claim 2
Dependent Claim
95 words
An irrigation apparatus for dispensing fluid comprising: a reverse osmosis unit for connection to a conventional water supply for producing a substantially pyrogen-free fluid; final filter means coupled to the output of the reverse osmosis unit for filtering the fluid supply collected by the osmosis unit; reservoir container means coupled to the output of said filter means for holding a measured quantity of the fluid; and weight sensitive switch means supporting said reservoir container means whereby actuation of said switch means transfers quantities of fluid from said reverse osmosis unit to said reservoir container means
Claim 3
Dependent Claim
30 words
The irrigation apparatus as recited in claim 1 wherein said filter means comprises a dionization chamber connected to the output of said reverse osmosis unit and a sterilizing Millipore filter.
Claim 4
Dependent Claim
28 words
The irrigation apparatus as recited in claim 1 additionally comprising a reservoir connected to the output of said first osmosis unit for storing a quantity of nonpyrogenic fluid.
Claim 5
Dependent Claim
32 words
The irrigation apparatus as recited in claim 1 additionally comprising an additive cup coupled to the output of said reservoir container means to permit the addition of chemicals to the endoscopic fluid.
Claim 6
Dependent Claim
22 words
The irrigation apparatus as recited in claim 4 additionally comprising a one-way valve coupled to the output of said reservoir container means.
Claim 7
Dependent Claim
27 words
The irrigation apparatus as recited in claim 3 wherein said reverse osmosis unit additionally comprises a drain valve coupled to its output for draining the nonpyrogenic fluid.
Claim 8
Dependent Claim
51 words
The irrigation apparatus as recited in claim 1 additionally comprising pump means connected to a source of power with said switch means interposed between said pump and said source of power whereby actuation of said switch means transfers quantities of fluid from said reverse osmosis unit to said reservoir container means.
References Cited (Backward Citations)
US3578774A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |