Patent US3625211A successfully refreshed from Google Patents.
US3625211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Failsafe apparatus for administering a parenteral solution
Assignee: Bayer Corp
•
Filing: 1969-06-06
•
Granted: 1971-12-07
•
Expires: 1989-06-06
Abstract
Abstract A set for administering a premeasured volume of parenteral solution from a prime fluid supply, utilizing a valve arrangement which prevents the possibility of the prime fluid supply being connected directly to the patient and enables repeat administration without manipulation of an antiair-entrainment valve.
Inventors
- 👤 William F Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:38
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/1412
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
152 words
An apparatus for administering a parenteral solution, including in combination: a fluid supply container, a measuring chamber below said container and having a lower end, a drip barrel below the lower end of said chamber, a conduit connected at an upper end to said fluid supply container and having a lower end connected to a point below said chamber and above said barrel, two-position valve means connected to the lower end of said measuring chamber and having a first position in which and only in which it connects said chamber to said conduit and having a second position in which and only in which it connects said measuring chamber to said drip barrel, said valve means having means positively preventing flow of fluid from said conduit to said drip barrel at any time, said apparatus having means connected to the drip barrel for attaching to and supplying parenteral solution to a patient.
Claim 2
Independent Claim
152 words
An apparatus for administering a parenteral solution, including in combination: a fluid supply container, a measuring chamber below said container and having a lower end, a drip barrel below the lower end of said chamber, a conduit connected at an upper end to said fluid supply container and having a lower end connected to a point below said chamber and above said barrel, two-position valve means connected to the lower end of said measuring chamber and having a first position in which and only in which it connects said chamber to said conduit and having a second position in which and only in which it connects said measuring chamber to said drip barrel, said valve means having means positively preventing flow of fluid from said conduit to said drip barrel at any time, said apparatus having means connected to the drip barrel for attaching to and supplying parenteral solution to a patient.
Claim 3
Independent Claim
230 words
An apparatus for administering a parenteral solution comprising: a fluid supply container, a measuring chamber below said container and having a lower end, a drip barrel below the lower end of said chamber, a first conduit leading from said fluid supply container connected to a point between the chamber and barrel, two-position valve means connected to the lower end of said measuring chamber and having a first position in which and only in which it connects said chamber to said first conduit and having a second position in which and only in which it connects said measuring chamber to said drip barrel, said valve means having means positively preventing flow of fluid from said first conduit to said drip barrel at any time; check valve means inside said measuring chamber at said lower end just above said two-position valve means, passageway means leading to said two-position valve means and closed by said check valve means when said measuring chamber is empty, said passage means leading from said measuring chamber via said two-position valve means when it is in its said second position to said drip barrel through an orifice drip; a second conduit connected to said drip barrel at one end, said second conduit adapted to be connected to a patient at its other end; and a control valve on said second conduit to regulate fluid flow to the patient.
Claim 4
Independent Claim
230 words
An apparatus for administering a parenteral solution comprising: a fluid supply container, a measuring chamber below said container and having a lower end, a drip barrel below the lower end of said chamber, a first conduit leading from said fluid supply container connected to a point between the chamber and barrel, two-position valve means connected to the lower end of said measuring chamber and having a first position in which and only in which it connects said chamber to said first conduit and having a second position in which and only in which it connects said measuring chamber to said drip barrel, said valve means having means positively preventing flow of fluid from said first conduit to said drip barrel at any time; check valve means inside said measuring chamber at said lower end just above said two-position valve means, passageway means leading to said two-position valve means and closed by said check valve means when said measuring chamber is empty, said passage means leading from said measuring chamber via said two-position valve means when it is in its said second position to said drip barrel through an orifice drip; a second conduit connected to said drip barrel at one end, said second conduit adapted to be connected to a patient at its other end; and a control valve on said second conduit to regulate fluid flow to the patient.
Claim 5
Dependent Claim
102 words
The apparatus of claim 2 wherein said check valve means comprises a retainer cage at the lower end of said chamber above the upper end of said passageway means and having an upper wall spaced above said upper end, a float retained in said cage and forced upwardly toward said upper wall when fluid flows into said chamber from said first conduit via said two-position valve, and means provided by incomplete seating of said float on said upper end for allowing slow drop-by-drop passage of fluid from said chamber into said passage means when said two-position valve is in said second position.
Claim 6
Independent Claim
150 words
An apparatus for administering a parenteral solution, including in combination: a fluid supply container having a first conduit leading from a lower end thereof, a measuring chamber below said container and having a lower end with a second conduit connected thereto, a drip barrel below the lower end of said chamber with a third conduit leading to the upper end thereof, two-position valve means connected to said second conduit and having a first position in which and only in which it connects said second conduit to said first conduit and having a second position in which and only in which it connects said second conduit to said third conduit, said valve means having means positively preventing flow of fluid from said first conduit to said third conduit at any time said drip barrel having means extending from the lower end thereof for attaching and supplying parenteral solution to a patient.
Claim 7
Independent Claim
150 words
An apparatus for administering a parenteral solution, including in combination: a fluid supply container having a first conduit leading from a lower end thereof, a measuring chamber below said container and having a lower end with a second conduit connected thereto, a drip barrel below the lower end of said chamber with a third conduit leading to the upper end thereof, two-position valve means connected to said second conduit and having a first position in which and only in which it connects said second conduit to said first conduit and having a second position in which and only in which it connects said second conduit to said third conduit, said valve means having means positively preventing flow of fluid from said first conduit to said third conduit at any time said drip barrel having means extending from the lower end thereof for attaching and supplying parenteral solution to a patient.
References Cited (Backward Citations)
GB438611A
Cited
US2565045A
Cited
US2783920A
Cited
US3056403A
Cited
US3216419A
Cited
US3465784A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |