US3626959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intravenous flow control
Assignee: Deseret Pharmaceutical Co Inc
•
Filing: 1970-02-04
•
Granted: 1971-12-14
•
Expires: 1990-02-04
Abstract
Abstract A valve for controlling the flow of intravenous fluid through a flexible tube either alone or in association with a reservoir, the valve including an exterior flexible sleeve disposed over an aperture or separation in the tube and a spool which is displaceable within and along the axis of the tube by squeezing the exterior of the sleeve and/or tube near one end of the spool. The spool has a tortuous fluid passageway which is obstructed so that fluid flow is prevented except when the obstruction is disposed opposite the aperture. The method includes adjusting the position of the spool along the axis of the tube to control the rate at which the fluid flows through the tube.
Inventors
- 👤 Louis S Santomieri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:59
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0146; A; A61; A61M; A61M39/00; A61M39/22; A61M5/00; A61M5/14; A61M5/168; A61M5/16877; A61M5/16881; F; F16; F16K; F16K31/00; F16K31/44; F16K31/445; Y; Y10; Y10T; Y10T137/00; Y10T137/0318
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
167 words
Valve structure for controlling the flow of fluid comprising: a flexible tube having a hollow interior which hollow interior comprises an internal bypass chamber at a predetermined site; and an axially displaceable plug disposed within the tube proximate the bypass chamber of the hollow interior, the plug defining influent and effluent fluid passageway means on opposite sides of a barrier of the plug, which barrier prohibits at all times axial flow when the plug is manually squeezed along the axis of the tube to a position axially remote from the bypass chamber, the influent and effluent fluid passageway means respectively accommodating fluid flow to and from the barrier only when the plug has been manually squeezed along the axis of the tube to a position where the fluid passageway means are to some degree in registry with the bypass chamber of the interior of the tube whereby fluid flows through the bypass chamber around the barrier between the two passageway means to the extent of said registry.
Claim 2
Dependent Claim
187 words
A valve for controlling the flow of fluid comprising: a fluid-conducting tube having at least one bypass opening therein; an enclosure surmounting the tube adjacent the bypass opening so that the bypass opening is covered by the enclosure; and a spool axially displaceable within the tube and normally forming an obstruction to fluid flow with the inner periphery of the tube when remote from the enclosure, the spool being contoured to define separate influent and effluent flow paths and an obstruction therebetween which prevents fluid flow across the spool between the flow paths except when the obstruction is disposed opposite the bypass opening in the tube so that the influent path communicates to the effluent flow path from the bypass opening, the obstruction comprising a generally annular disk having a cross-sectional dimension essentially the same as the inside cross-sectional dimension of the tube, and wherein the flow paths comprise annular recesses at the surface of the spool adjacent the disk, each recess being connected with an axially directed passageway disposed in the periphery of the spool from the annular recess to respective opposite ends of the spool.
Claim 3
Dependent Claim
175 words
A valve for controlling the flow of fluid comprising: a fluid-conducting tube having at least one bypass opening therein; an enclosure surmounting the tube adjacent the bypass opening so that the opening is covered by the enclosure; and a spool axially displaceable within the tube and normally forming an obstruction to fluid flow with the inner periphery of the tube when remote from the enclosure, the spoOl being contoured to define separate influent and effluent flow paths and an obstruction therebetween which prevents fluid flow across the spool between the flow paths except when the obstruction is disposed opposite the bypass opening in the tube so that the influent flow path communicates to the effluent flow path from the bypass opening, the enclosure comprising a fluid reservoir in communication with the bypass opening in the fluid-conducting tube, the spool being selectively positionable within the tube relative to the bypass opening to (a) conduct fluid into the reservoir, (b) conduct fluid out of the reservoir and (c) bypass the reservoir at the election of the user.
Claim 4
Dependent Claim
35 words
A valve as defined in claim 4 wherein the spool comprises a contoured cross-sectionally enlarged portion to identify the position of the spool within the tube and to accommodate facile finger displacement of the spool.
References Cited (Backward Citations)
US2692751A
Cited
US2964292A
Cited
US2829922A
Cited
US2946555A
Cited
US3022743A
Cited
US3270756A
Cited
US3425664A
Cited
US3527441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |