 |
|
|
|
|
|
 Title: |
US4892524:
Intravenous administration system
[ Derwent Title ]
|
| Country: |
US United States of America
|
| |
| Inventor: |
Smith, Gordon; Jefferson, TX 75657
|
| Assignee: |
None
|
| Published / Filed: |
1990-01-09
/ 1987-10-30
|
| Application Number: |
US1987000115424
|
| IPC Code: |
Advanced:
A61M 5/14;
A61M 5/40;
Core:
A61M 5/36;
more...
IPC-7:
A61M 5/00;
|
| U.S. Class: |
Current:
604/246;
604/245;
604/257;
Original:
604/246;
604/245;
604/257;
|
| Field of Search: |
604/246,245,254,256,257,122,83
|
| Priority Number: |
| 1987-10-30 |
US1987000115424 |
|
| Abstract: |
An apparatus for administering a volumetric flow of parenteral liquids into a patient's system, in which the quantity of liquid flowing into the system may be easily adjusted, is disclosed. The apparatus includes two separate hydrostatic head pressure systems. The first head pressure is from a container, through a metering device with an adjustable fixed orifice to a regulator located a fixed distance below the container. The second head is from the regulator, which is designed to prevent air flow through it, to the patient. Several embodiments of the metering device and of the regulator are disclosed.
|
| Attorney, Agent or Firm: |
Quarles & Brady ;
|
| Primary / Asst. Examiners: |
Pellegrino, Stephen C.;
|
| Maintenance Status: |
E2 Expired Check current status
|
| INPADOC Legal Status: |
Show legal status actions
|
| Family: |
None
|
First Claim:
Show all 16 claims |
What is claimed is:
1. An apparatus for administering a liquid to a patient comprising:
- (a) at least one container for holding liquid suspended elevated above the patient;
- (b) a passive metering device located a sufficient distance from the container to effect a substantial hydrostatic head pressure, the passive metering device containing at least one restricted orifice through which fluid may flow, the metering device located below the container;
- (c) a regulator having a fluid chamber and an air-tight exit valve comprising means to obstruct air flow therethrough, the regulator located a pre-selected distance below the container;
- (d) first flexible tubing connecting the container to the regulator with the metering device located therebetween so that constant volumetric flow from the container to the regulator is assured by the combination of constant hydrostatic pressure drop from the container to the regulator and the restricted flow through the metering device; and
- (e) second flexible tubing connecting the output of the regulator to the patient so that instantaneous fluid flow to the patient is determined by the head pressure from the regulator to the patient.
|
| Background / Summary: |
Show background / summary
|
| Drawing Descriptions: |
Show drawing descriptions
|
| Description: |
Show description
|
| Forward References: |
Show 10 U.S. patent(s) that reference this one
|
