Patent US4846637A successfully refreshed from Google Patents.
US4846637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infusion pump system and conduit therefor
Assignee: ALDERSON RICHARD KINNEY
•
Filing: 1988-07-14
•
Granted: 1989-07-11
•
Expires: 2008-07-14
Abstract
Abstract A modular infusion pump system utilizes a positive displacement pump for pumping a known quantity of fluid for each stroke. A plurality of longitudinally spaced apart fixed combs cooperate with a resilient tube to define a known pumping volume. A plurality of movable combs are interdigitated with the fixed combs and are periodically linearly directed to cause the pump volume to be compressed, and therefore the fluid expelled. A rotary to linear drive system is connected with the movable combs and a ratchet system prevents counterrotation when the motor is in the off position. Valves are disposed above and below the pumping unit to appropriately seal off the pumping volume. The valves and the movable combs are operated by means of cams carried by a common shaft.
Inventors
- 👤 Richard K. Alderson
- 👤 Ronald D. Sleater
- 👤 James R. Talley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:00
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/08; F04B43/082; A; A61; A61M; A61M5/00; A61M5/14; A61M5/142; A61M5/168; A61M5/16831; A61M5/16836
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
209 words
An administration set for an infusion system, comprising: (a) a longitudianlly extending body comprised of an elastomeric material; (b) said body including a first substantially nondeformable portion of substantial thickness having an arcuate first surface of substantially constant radius extending between opposite terminal ends and said first portion for providing strength and support during compression of said body; (c) said body further including a second relatively thin deformable portion extending in uninterrupted manner from said terminal ends, said second portion being arcuate and of substantially constant radius and the mirror image of said first surface; (d) said first surface and said second position forming a substantially elliptical fluid conduit when said second portion is in the non-deformed state. (e) a drip chamber extends from a first end of said body and is integral therewith and has an end element; (f) valve means are disposed between said drip chamber and said fluid conduit for regulating the flow of fluid therebetween; (g) a fluid orifice is disposed in said end element and includes means for connection with a fluid source, said orifice having at least a coating of a non-wetting material for controlling the size of the fluid drops exiting said orifice; and, (h) a vent communicates with said drip chamber.
Claim 2
Dependent Claim
209 words
An administration set for an infusion system, comprising: (a) a longitudianlly extending body comprised of an elastomeric material; (b) said body including a first substantially nondeformable portion of substantial thickness having an arcuate first surface of substantially constant radius extending between opposite terminal ends and said first portion for providing strength and support during compression of said body; (c) said body further including a second relatively thin deformable portion extending in uninterrupted manner from said terminal ends, said second portion being arcuate and of substantially constant radius and the mirror image of said first surface; (d) said first surface and said second position forming a substantially elliptical fluid conduit when said second portion is in the non-deformed state. (e) a drip chamber extends from a first end of said body and is integral therewith and has an end element; (f) valve means are disposed between said drip chamber and said fluid conduit for regulating the flow of fluid therebetween; (g) a fluid orifice is disposed in said end element and includes means for connection with a fluid source, said orifice having at least a coating of a non-wetting material for controlling the size of the fluid drops exiting said orifice; and, (h) a vent communicates with said drip chamber.
Claim 3
Dependent Claim
17 words
An administration set as in claim 1, wherein: (a) said valve means including a variable orifice valve.
Claim 4
Dependent Claim
29 words
An administration set as in claim 1, wherein: (a) said body including an outlet spaced from said valve means, said outlet being circular for connection with a medicant tube.
Claim 5
Dependent Claim
179 words
An administration set for pumped and gravity feed infusion systems, comprising: (a) a longitudinally extending body comprised of a transparent, polymeric compressible material; (b) said body having upper, middle and lower portions, each of said portions being apertured in longitudinal relation for defining in each portion a chamber and with said chambers being interconnected for providing a flow path for fluids; (c) said lower portion includes a pumping section and said pumping section is defined by a base portion of substantial thickness having an arcuate surface from opposite ends of which a relatively thin wall portion extends and said wall portion is arcuate and the mirror image of said base portion, and said lower portion chamber terminates in a fluid outlet; (d) said upper portion includes means for connection to a source of fluid and means for venting said upper portion chamber as fluid fills said upper portion chamber; and, (e) valve means are operably associated with said middle portion for selectively blocking said middle portion chamber and therefore for regulating fluid flow between said upper and lower chambers.
Claim 6
Dependent Claim
179 words
An administration set for pumped and gravity feed infusion systems, comprising: (a) a longitudinally extending body comprised of a transparent, polymeric compressible material; (b) said body having upper, middle and lower portions, each of said portions being apertured in longitudinal relation for defining in each portion a chamber and with said chambers being interconnected for providing a flow path for fluids; (c) said lower portion includes a pumping section and said pumping section is defined by a base portion of substantial thickness having an arcuate surface from opposite ends of which a relatively thin wall portion extends and said wall portion is arcuate and the mirror image of said base portion, and said lower portion chamber terminates in a fluid outlet; (d) said upper portion includes means for connection to a source of fluid and means for venting said upper portion chamber as fluid fills said upper portion chamber; and, (e) valve means are operably associated with said middle portion for selectively blocking said middle portion chamber and therefore for regulating fluid flow between said upper and lower chambers.
Claim 7
Dependent Claim
15 words
The set of claim 4 wherein: (a) said valve means includes a variable orifice valve.
Claim 8
Dependent Claim
15 words
The set of claim 5, wherein: (a) said valve extends generally transverse to said body.
Claim 9
Dependent Claim
18 words
The set of claim 5, wherein: (a) said valve includes a logarithmic opening through which the fluid flows.
Claim 10
Dependent Claim
40 words
The set of claim 4, wherein: (a) the internal diameter of said upper chamber exceeds the internal diameter of said middle chamber, and the internal diameter of said middle chamber is less than the internal diameter of said lower chamber.
Claim 11
Dependent Claim
31 words
The set of claim 4, wherein: (a) said means for connection and said means for venting each include a longitudinally disposed opening, and said openings are disposed in spaced parallel relation.
Claim 12
Dependent Claim
42 words
The set of claim 9, wherein said means for venting opening comprises: (a) a chamber proximate the upper terminus thereof; and, (b) longitudinally displaceable valve means positioned in said means for venting opening chamber for selectively blocking said means for venting opening.
Claim 13
Dependent Claim
32 words
The set of claim 9, wherein: (a) said means for connection includes a lower terminal position communicating with said upper portion chamber, and said lower terminal portion comprised of a non-wetting material.
Claim 14
Dependent Claim
17 words
The set of claim 5, wherein: (a) said valve includes a handle disposed exteriorly of said body.
References Cited (Backward Citations)
US2917002A
Cited
DE1503614A1
Cited
US3518033A
Cited
US3565554A
Cited
US4302854A
Cited
US4519792A
Cited
US4553532A
Cited
US4576594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |