Device for and method of treating waste liquid

• US 5,156,823 A
• Filed: 12/04/1989
• Issued: 10/20/1992
• Est. Priority Date: 12/06/1988
• Status: Expired due to Term

• Current Assignee: Daikin Industries Ltd
• Original Assignee: Daikin Industries Ltd
• Inventors: Hori, Shoji, Tokuhisa, Koichi
• Primary Examiner(s): Warden, Robert J.
• Assistant Examiner(s): EDWARDS, LAURA ESTELLE
• Application Number:
  US07/445,768
• Time in Patent Office: 1,051 Days
• Field of Search: 422/292, 422/295, 422/73, 422/102, 422/103, 422/104, 422/256, 210/198.1, 210/206, 210/207, 222/129.2, 141/363, 141/364, 141/365, 141/366, 4/222-232
• US Class Current: 422/292
• CPC Class Codes: A61K 35/14 Blood; Artificial blood perfluorocarbons A61K31/02; umbilical cord blood A61K35/51; haemoglobin A61K38/42
• CPC Class Codes: A61L 11/00 Methods specially adapted for refuse disintegrating medical waste B02C19/0075; disposal of medical waste B09B3/00
• CPC Class Codes: A61L 2/16 using chemical substances
• CPC Class Codes: A61M 1/882 Draining devices provided with means for releasing antimicrobial or gelation agents in the drained fluid

Abstract

A waste liquid treating device is provided above a waste container or in the upper portion thereof with a container, suspender or the like for holding a waste liquid treating chemical agent. The chemical agent is preferably a coagulant for the waste liquid to be treated or an agent for killing bacteria, viruses or the like present in the liquid. A waste liquid treating method is practiced using the device. The waste liquid collected in the waste container is treated with the chemical agent held above or in the upper portion of the waste container and thereafter discarded along with the waste container.

Claims

1. An apparatus for coagulating body fluids which have been released from live bodies and solutions of said body fluids, said apparatus comprising:

(a) waste a container for storing body fluids and body fluid solutions;

(b) an aspiration port at an upper portion of said waste container for aspirating the body fluids and body fluid solutions;

(c) a discharge port at an upper portion of said waste container;

(d) means for holding a chemical agent in an inner upper portion of said waste container; and

(e) a chemical agent comprising a coagulant for coagulating body fluids and body fluid solutions in said waste container.

2. A device as defined in claim 1 wherein the chemical agent holding means comprises a container for accommodating the chemical agent, and the chemical agent container communicates with the waste container through a shutoff valve.

3. A device as defined in claim 1 wherein the chemical agent holding means comprises a container for accommodating the chemical agent, and the chemical agent container communicates with the waste container through a shutoff valve, the shutoff valve serving also as a shutoff valve for a waste liquid inlet port of the waste container, the shutoff valve being operable to hold the inlet port closed while holding the chemical agent container in communication with the waste container, the shutoff valve being operable to hold the inlet port open while holding the chemical agent container out of communication with the waste container.

4. A device as defined in claim 1 wherein the chemical agent holding means comprises a container for accommodating the chemical agent, and the chemical agent container is so held as to fall inside the waste container and is permeable to aqueous solutions.

5. A device as defined in claim 1 wherein the chemical agent holding means comprises a container for accommodating the chemical agent, and the chemical agent container is so held as to fall inside the waste container and is soluble in water.

6. A device as defined claim 1 wherein the chemical agent holding means comprises a suspender for holding the chemical agent, and the suspender is held suspended within the waste container and is permeable to aqueous solutions.

7. A device as defined in claim 2 wherein the chemical agent holding means comprises a container for accommodating the chemical agent, and the chemical agent container has a chemical agent delivery opening and is so supported as to make the delivery opening changeable selectively to an upwardly directed position or to a downwardly directed position.

8. A device as defined in claim 7 wherein the chemical agent container is supported rotatably.

9. A device as defined in claim 8 wherein a center of rotation of the chemical agent container is at a position away from the center of gravity thereof so that the delivery opening is in the downwardly directed position when the chemical agent container is in a stable state, the device further having means for releasably holding the chemical agent container in a position in which the delivery opening is directed upward.

10. A device as defined in claim 9, wherein the chemical agent container is made movable from outside the waste container to change the delivery opening from the upwardly directed position to the downwardly directed position.

11. A device as defined in claim 9 wherein the means for releasably holding the chemical agent container serves also as means for openably closing the delivery opening.

12. A device as claimed in claim 11, wherein the chemical agent container is made movable from outside the waste container to change the delivery opening from the upwardly directed position to the downwardly directed position.

13. A device as defined in claim 8, wherein the chemical agent container is made movable from outside the waste container to change the delivery opening from the upwardly directed position to the downwardly directed position.

14. A device as defined in claim 7 wherein the chemical agent container is made movable from outside the waste container to change the delivery opening from the upwardly directed position to the downwardly directed position.

15. A device as defined in claim 14 wherein the chemical agent holding means comprises a hollow closure for closing an upper opening of the waste container, the hollow closure being formed with a release opening located above the delivery opening as directed upward, the release opening being closed with a stopper for closing the delivery opening.

16. A device as defined in claim 15 wherein the stopper is in screw-thread engagement with respective threaded portions of the delivery opening and the release opening, and the threaded portions are in oppositehanded screw relationship with each other, the chemical agent container being so supported as to be movable upward or downward relative to the hollow closure.