Injection system for suspension and solutions

• US 4,207,889 A
• Filed: 10/27/1978
• Issued: 06/17/1980
• Est. Priority Date: 10/27/1978
• Status: Expired due to Term

• Current Assignee: United States Of America As Represented By The Secretary Of The Air Force
• Original Assignee: United States Of America As Represented By The Secretary Of The Air Force
• Inventors: Oloff, Clarence M., Buehring, Willi J., Greenlees, Kevin J.
• Primary Examiner(s): Yasko, John D.
• Application Number:
  US05/955,296
• Time in Patent Office: 599 Days
• Field of Search: 128/213 R, 128/214 R, 128/214 A, 128/214 F, 128/215, 128/216, 128/224, 128/230, 128/234, 128/218 A, 128/DIG. 1, 128/DIG. 12, 222/145
• US Class Current: 604/152
• CPC Class Codes: A61B 5/0275 using tracers, e.g. dye dilution
• CPC Class Codes: Y10S 128/01 Motorized syringe

Abstract

An injection system for suspensions and solutions having five cartridges supported on a cartridge support. The cartridges are connected to a coalescing disc with five inlet passages and a single output passage with a feed line connected to the single passage. Suspensions and solutions supplied to the cartridges are selectively injected into a test subject by supplying a saline solution to the cartridge from a syringe pump through a selector which selects the cartridge to which the saline solution is supplied.

Claims

1. An apparatus for injecting suspensions and solutions into a test subject supply line, comprising:

a cartridge support member;

a plurality of cartridges secured to said support member;

a coalescing disc having a single outlet passage connected to a plurality of inlet passages;

means for connecting said test subject supply line to the single outlet passage of the coalescing disc;

means for connecting each of said cartridges to one inlet of said coalescing disc;

means for selectively supplying a measured amount of carrier solution sequentially to said cartridges to carry the suspension and solutions therein through the coalescing disc into the test subject supply line;

said means for supplying carrier solution sequentially to the cartridges includes a sequencer having a cylinder block with one inlet passage and a plurality of outlet passages;

means for connecting said outlet passages to said cartridges;

means for sequentially connecting said inlet passage to said outlet passages and means for supplying measured amounts of solution to said inlet passage;

said means for sequentially connecting said inlet passage to said outlet passages including a cylinder positioned within said cylinder block;

said cylinder including a passage adapted to sequentially connect said inlet passage to said outlet passages;

means for stepping the passage within said cylinder sequentially into alignment with said outlet passages.

2. The device as recited in claim 1 wherein said means for sequentially stepping the passage within the cylinder into alignment with the outlet passages includes a rachet wheel connected to said cylinder;

an electric motor;

means, connected to said electric motor for stepping said rachet wheel to move the passage within said cylinder from one outlet passage to the next for each revolution of said motor;

means for stopping said motor after each revolution.

3. The device as recited in claim 2 wherein said means for stopping said motor after each revolution includes a cam wheel connected to said electric motor;

a microswitch positioned adjacent said cam wheel;

means for energizing said electric motor;

said means for energizing said electric motor including a power supply;

a relay, including switch contacts connected between said power supply and said motor;

means, connected in parallel with said microswitch for energizing said relay to start said motor;

said cam including means for closing the microswitch contacts for maintaining the energization of the motor for one revolution of the motor.

4. The device as recited in claim 3 wherein said means for supplying measured amounts of solution to the inlet passage of the cylinder block includes a syringe pump;

a three way connector having a first port connected to the syringe pump;

a solution supply;

said three way connector having a second port connected to the solution supply;

means, connected between the solution supply and the three way connector, for permitting only one way flow from the solution supply to the syringe pump;

said three way connector having a third port connected to the inlet passage in said cylinder block;

means, connected between the three way connector and said cylinder block inlet passage for permitting only one way flow from the syringe pump to the cylinder block inlet passage.