Mixing chamber for use in plural medical liquid intravenous administration set

• US 4,191,183 A
• Filed: 10/31/1977
• Issued: 03/04/1980
• Est. Priority Date: 10/31/1977
• Status: Expired due to Term

• Current Assignee: Barry Mendelson
• Original Assignee: Barry Mendelson
• Inventors: Mendelson, Barry
• Primary Examiner(s): Truluck, Dalton L.
• Application Number:
  US05/847,263
• Time in Patent Office: 855 Days
• Field of Search: 128/214 R, 128/214 A, 128/214 C, 128/214 D, 128/214.2, 128/227, 128/272, 128/276, 128/215, 141/107, 141/286, 222/145, 366/165, 137/602
• US Class Current: 604/80
• CPC Class Codes: A61M 5/1408 in parallel, e.g. manifolds, sequencing valves access sites A61M39/02; tube connectors A61M39/10

Abstract

A mixing chamber for use in an intravenous administration set wherein plural medical liquids are delivered to a patient comprising a pair of opposed, parallely extending front and rear walls which are closely spaced to each other relative to their transverse dimension, a top wall extending between and interconnecting the top peripheral edges of the front and rear walls and a side wall extending between and interconnecting the side peripheral edges of the front and rear walls, the front, rear, top and side walls defining a relatively shallow interior chamber. A plurality of entrance ports are formed in the top wall and an exit port is formed in the side wall. A transparent, magnifying window is provided in the front wall to provide a magnified view of the interior of the chamber. Inwardly extending shoulders are formed on the side walls to promote mixing of the plurality of medical liquids being administered to the patient. By virtue of the liquids being mixed and the improved visual access to the interior of the chamber, any precipitation resulting from mixing incompatible medical liquids is easily observed so that corrective measures may be taken.

Claims

1. A mixing chamber for use in an intravenous administration set wherein plural medical liquids are delivered to a patient comprising a pair of opposed, substantially parallely extending front and rear walls, said walls being closely spaced to each other relative to their transverse dimensions, said walls each having top and side peripheral edges;

a top wall extending between and interconnecting the top peripheral edges of said front and rear walls, said top wall having a plurality of entry ports formed therethrough, each port communicating with the space defined between said front and rear walls; and

a side wall extending between and interconnecting the side peripheral edges of said front and rear walls, said side wall having an exit port formed therethrough, said exit port communicating with the space defined between said front and rear walls, whereby said front, rear, top and side walls define a relatively shallow interior chamber, said mixing chamber further including a bypass bore having upper and lower ends formed in said sidewall, the upper end of said bypass bore communicating with an entry port and the lower end of said bypass bore communicating with said exit port.

2. A mixing chamber as recited in claim 1 wherein said entry ports are provided with screw threads for connection to a threaded stopper member.

3. A mixing chamber comprising side and top walls defining an interior chamber, a plurality of entry ports formed in said top wall, an exit port formed in the lower region of said sidewall, and a bypass bore formed in said sidewall having upper and lower ends, the upper end communicating with one of said entry ports and the lower end communicating with said exit port.

4. A mixing chamber for use in an intravenous administration set wherein plural medical liquids are delivered to a patient comprising a pair of opposed, substantially parallely extending front and rear walls, said walls being closely spaced to each other relative to their transverse dimensions, said walls each having top and side peripheral edges;

a top wall extending between and interconnecting the top peripheral edges of said front and rear walls, said top wall having a plurality of entry ports formed therethrough, each port communicating with the space defined between said front and rear walls; and

a side wall extending between and interconnecting the side peripheral edges of said front and rear walls, said side wall having an exit port formed therethrough, said exit port communicating with the space defined between said front and rear walls, whereby said front, rear, top and side walls define a relatively shallow interior chamber and further including means within said chamber for promoting mixing of said plural medical liquids.

5. A mixing chamber as recited in claim 4 wherein said mixing promoting means includes a pair of opposed side portions and a bottom portion defining said side wall, each of said side wall side portions having a shoulder extending inwardly into the chamber.

6. A mixing chamber as recited in claim 4 wherein said mixing promoting means includes a pair of opposed side portions and a bottom portion defining said side wall, each of said side wall portions gradually increasing in its inward dimension in the downward direction.

7. A mixing chamber as recited in claim 4 wherein said mixing promoting means includes a pair of opposed side portions and a bottom portion defining said side wall, each of said side wall side portions having a substantially convex inner surface.