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WO1994000167A1 - Cuves de retention pour dechets liquides - Google Patents

Cuves de retention pour dechets liquides Download PDF

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Publication number
WO1994000167A1
WO1994000167A1 PCT/US1993/005970 US9305970W WO9400167A1 WO 1994000167 A1 WO1994000167 A1 WO 1994000167A1 US 9305970 W US9305970 W US 9305970W WO 9400167 A1 WO9400167 A1 WO 9400167A1
Authority
WO
WIPO (PCT)
Prior art keywords
vessel
container
ball
rod
liquid waste
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US1993/005970
Other languages
English (en)
Inventor
Robert E. Gunya
Otto V. Jackson
Diane M. Gunya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Milieu Systems Corp
Original Assignee
Milieu Systems Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US07/906,942 external-priority patent/US5380308A/en
Priority claimed from US07/906,206 external-priority patent/US5401261A/en
Application filed by Milieu Systems Corp filed Critical Milieu Systems Corp
Priority to CA002138968A priority Critical patent/CA2138968A1/fr
Priority to AU46462/93A priority patent/AU4646293A/en
Publication of WO1994000167A1 publication Critical patent/WO1994000167A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/69—Drainage containers not being adapted for subjection to vacuum, e.g. bags
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/88—Draining devices having means for processing the drained fluid, e.g. an absorber
    • A61M1/882—Draining devices provided with means for releasing antimicrobial or gelation agents in the drained fluid

Definitions

  • This invention relates generally to containment vessels for use in the safe handling and disposal of liquid waste products including but not limited to blood and body fluids and embalming fluid from embalming procedures performed by morticians.
  • the present invention provides for the safe handling and disposal of liquid waste utilizing holding vessels to capture and contain the liquid waste and convert the liquid waste within the vessels into a non-pourable substance to eliminate any possibility of spillage during transport of the vessels to a location for safe disposal without exposing anyone to the waste materials.
  • one or more layers of a suitable gelling agent are adhered to the interior of the vessels using an adhesive that dissolves when contacted by the liquid waste entering the vessels to release the gelling agent into the liquid waste and thereby transform the liquid waste into a non- pourable substance.
  • the vessels are desirably made of a material having a virtually unlimited life when exposed to the environment, whereby the vessels and their non-pourable contents may be disposed of in conventional landfills where permitted. Also, the vessels and their contents may be incinerated in high temperature incinerating plants.
  • the inlet to each vessel includes a one-way check valve preventing any possibility of spillage or backflow of liquid waste through the inlet.
  • the vessels may be provided with a tip indicator for indicating if the vessels have been tipped after the vessels have been put into service.
  • the vessels may be provided with an in-service indicator to indicate when the vessels have been put into service.
  • the vessels are desirably provided with a full indicator for indicating when the contents of the vessels reach a predetermined level of fullness and for closing off a vent through which air is vented from the interior of the vessels during filling of the vessels through the inlet.
  • a cam lock is desirably provided for drawing a cover into airtight sealing engagement with the container portion of the vessels during attachment of the cover to the container portion.
  • an expandable fill tube is desirably used to connect the inlet to the vessels to a drain opening in an embalming table and the like that permits raising and lowering of the table relative to the vessels without having to disconnect the vessels from the table.
  • a cradle may be used to provide an in-place holding unit for the vessels and a stop preventing downward movement of the embalming table into engagement with the vessels, protecting the vessels against damage. Also, the cradle provides for ease of movement of the vessels from one location to another and eliminates the need for having to lift the vessels when clearing an area.
  • Fig. 1 is a side elevation view of a preferred form of vessel in accordance with this invention, shown supported in place by a cradle beneath an embalming table, with an expandable fill tube extending between the table drain opening and vessel inlet for permitting the table to be raised and lowered relative to the vessel without having to disconnect the vessel from the table;
  • Fig. 2 is an enlarged fragmentary vertical section through the vessel of Fig. 1 showing the condition of the vessel just prior to placing the vessel into service;
  • Fig. 2A is a fragmentary enlarged vertical section through a side wall portion of the vessel of Fig. 2 showing two layers of a gelling material adhered to the interior surface thereof;
  • Fig. 3 is a further enlarged fragmentary longitudinal section through the vessel of Fig. 1 showing the vessel after the vessel has been put into service and the vessel has been partially filled with liquid waste material and the liquid waste material has been transformed into a non-pourable gel; and
  • Fig. 4 is an enlarged fragmentary longitudinal section through the vessel, similar to Fig. 3, but showing the vessel filled to a predetermined level of fullness and the air vent to the interior of the vessel closed off.
  • FIG. 1 there is shown a preferred form of holding vessel 1 in accordance with this invention for use in the safe handling and disposal of various types of contaminated liquid waste, including but not limited to body fluids and other types of liquid wastes such as chemicals which are waste products in the embalming process.
  • holding vessels can be used wherever there is a need to collect and dispose of liquid waste materials such as in private embalming rooms, morgues, hospitals, veterinary clinics, medical centers, and various industrial and commercial facilities.
  • the vessel 1 is shown in Fig. 1 with its inlet 2 connected to the drain opening 3 of an embalming table 4 by means of an expandable corrugated plastic fill tube 5 which automatically expands or contracts to different lengths allowing the table to be raised or lowered as desired.
  • a cradle 6 is provided for supporting the vessel 1 in place off the floor. Swivel and lock type casters 7 on the cradle allow the cradle and thus the vessel supported thereby to be moved about freely from one location to another, thereby eliminating the need for having to lift the vessel when cleaning an area.
  • the cradle 6 is made of a suitably strong material such as stainless steel.
  • a handle 10 Extending vertically upwardly from the cradle at an angle is a handle 10 including a h ⁇ rizontal handle portion 11 which is vertically adjustable between the raised and lower positions shown in phantom and solid lines, respectively, in Fig. 1.
  • the handle portion 11 When in the raised position, the handle portion 11 is at a suitable height for ease of grasping by an operator for moving the cradle from one location to another.
  • the handle portion 11 When in the lower position, the handle portion 11 overlies a portion of the top of the vessel acting as a table stop preventing the table 4 from being lowered into engagement with the vessel and causing damage thereto.
  • Suitable rubber grips 12 may be provided on the ends of the handle for ease in grasping the handle by the operator.
  • the vessel 1 includes an open head container body 15 which is preferably injection molded out of a suitably strong, long lasting plastic such as high density polyethylene, with integral handles 16 on the exterior sides of the container for lifting.
  • a screw-on cover 17 Secured to the open top of the container is a screw-on cover 17 which may be made of the same material as the container. Turning the cover a part turn in the tightening direction actuates a cam lock 18 between the cover and container causing the cover to be drawn down against the top of the container compressing an O-ring seal 19 therebetween thus forming an airtight seal around the periphery of the container.
  • a wire 20 is preferably inserted through generally vertically aligned holes 21 and 22 in an exterior flange 23 on the cover and in one of the container handles 16 and the ends of the wire attached together as by means of a tamper-proof seal 24 (see Fig. 2) to prevent unauthorized opening of the vessel.
  • an identification tag 25 having a serial number for that particular vessel is desirably attached to the ends of the wire.
  • the serial number is desirably recorded and a permanent record kept to account for the vessel throughout its existence, keeping track of such information as the date of manufacture of the vessel, the date and time the yessel is delivered to a user, the date and time the vessel is picked up from a user, and the date and method of disposal of the vessel.
  • the inlet 2 to the vessel 1 is formed by suitably attaching a tubular fitting 30 within an opening 31 in the cover 17. Both ends of the fitting 30 are desirably threaded to facilitate attachment of the expandable fill tube 5 to the exterior side of the inlet and a one-way check valve 32 to the interior side of the inlet.
  • the one-way check valve 32 keeps the vessel inlet 2 closed except when liquid waste is entering the vessel thus preventing any possibility of spillage or backflow out through the inlet.
  • the air vent 35 is desirably incorporated in the cover 17 as part of a full indicator 36 (see Figs. 3 and 4) which performs the dual function of indicating when the contents within the vessel have reached a predetermined desired level of fullness and closing off the vent when such desired level of fullness is reached.
  • the level indicator 36 comprises an indicator rod 37 axially slidably received within a rod guide 38 suitably mounted within another opening 39 in the vessel cover and extending part way into the interior of the vessel.
  • a ball float 40 At the inner end of the indicator rod 37 is a ball float 40 which is forced upwardly by the contents within the container when the contents reach a certain level.
  • the indicator rod 37 is suspended within the rod guide 38 by engagement of a stop 41 adjacent the outer end of the indicator rod against the outer end of the rod guide as schematically shown in Fig. 3.
  • the vent 35 for venting air from the interior of the vessel 1 during filling of the vessel through the inlet 2 is formed by the clearance space 42 between the indicator rod 37 and rod guide 38 and vent holes 43 and 44 adjacent opposite ends of the rod guide.
  • the outermost vent holes 43 are exterior of the cover, whereas the innermost vent holes 44 are interior of the cover.
  • Adjacent the inner end of the rod guide 38 immediately above the innermost vent holes 44 is a valve seat 45 for a purpose to be subsequently described.
  • a suitable gelling material 50 for transforming the liquid waste W inside the vessel into a relatively solid, non-pourable substance W' , making it both safer to transport and dispose of without any risk of spillage.
  • one or more layers of the correct amount of gelling material are adhered to the interior surface 51 of the container using a suitable liquid soluble adhesive 52.
  • Fig. 2a shows two such layers 53 and 54 of gelling material 50 adhesively bonded to the interior surface 51 of the container using a liquid soluble adhesive 52.
  • any number of layers of gelling material may be adhesively applied to such interior surface as needed to provide the correct amount of gelling material for -10- continues to rise, the newly added liquid waste will come into contact with a previously undisturbed portion of the gel coating, thus dissolving the adhesive and releasing additional gelling material into the newly added liquid waste to transform the newly added liquid waste into a non-pourable substance.
  • a tip indicator 60 is desirably provided. As shown in detail in Fig. 3, the tip indicator 60 comprises an outwardly facing socket 61 on the top surface 62 of the cover and a ball 63 loosely received within the socket.
  • a transparent dome 64 provides an enclosure for the ball 63 and socket 61 while permitting viewing of the ball and socket through the dome.
  • an in-service indicator 65 is desirably provided for preventing the ball 63 from becoming accidentally dislodged from the socket 61 during transporting and storage of the vessel prior to placing the vessel in service and for releasing the ball so that the ball is free to roll out of the socket whenever the vessel is tipped after the vessel has been put into service.
  • the in-service indicator 65 comprises a rod 66 extending axially through an opening 67 in the dome, and a ball holder 68 on the inner end of the rod. When the rod 66 is in its innermost position shown in Fig. 2, the ball holder 68 presses up against the ball 63 thus -9- gelling the liquid contents.
  • the coating of gelling material initially desirably extends over the entire interior surface of the side wall 55 of the container from the bottom 56 substantially all the way up to the top 57 (see Fig. 2) .
  • the bottom interior surface of the container may but need not be initially coated with the gelling material as shown in Fig. 2 if desired.
  • To coat the interior surface with gelling material first the interior surface is sprayed with a suitable liquid soluble adhesive 52. Then, before the adhesive dries, the adhesive coating is sprayed or otherwise dusted with a suitable gelling material 50. If more than one layer is desired, the process is repeated until the desired number of layers of gelling material is built up on such interior surface.
  • gelling materials may be used depending on the different types of liquid waste being collected.
  • An example of a gelling material that can be used to gel blood and body fluid and embalming fluid is a 50/50 mixture of starch-g-poly (2-propenamide-CO-2-propenoic acid, potassium salt) and poly (2-propenamide-CO-2- propenoic acid, sodium salt) .
  • the mixture is applied to the interior surface in powder form.
  • An example of an adhesive that can be used to adhere the gelling material to the interior surface is a conventional water soluble adhesive.
  • Coating substantially the entire interior side wall 55 of the container with the gelling material has the advantage that any time any quantity of liquid waste is introduced into the vessel, the liquid waste will be substantially instantaneously converted into a solid waste, thereby virtually eliminating any possibility of spillage. As the content level within the vessel preventing the ball from becoming accidentally dislodged from the socket 61 before the vessel has been placed in, service.
  • a plurality of flexible barbs 69 along a portion of the length of the rod 66 just beneath the rod opening 67 in the dome 64 provide some resistance to outward movement of the rod from the ball engaging position.
  • this resistance can easily be overcome by pulling on a pull ring 70 at the outer end of the rod 66 to pull a portion of the rod and some of the barbs 69 thereon out through the rod hole 67 in the dome 64 to release the ball so the ball is free to roll out of the socket as shown in phantom lines in Fig. 3 whenever the vessel is tipped after the vessel has been put into service.
  • the outward extension of the rod 66 above the dome 64 as shown in Figs. 3 and 4 provides a visual indication that the vessel has been put into service.
  • the flat end faces 71 on the barbs 69 prevent the in-service indicator rod 66 from being pushed back into the dome once the rod has been pulled out as in Figs. 3 and 4.
  • Figs. 3 and 4 show the vessel filled to different levels and the coating of gelling material released up to the level of the liquid waste within the vessel which has been converted to a solid waste W' by the released gelling material. Also, Fig. 4 shows the full indicator rod 37 raised upwardly to its full height indicating that the contents within the vessel have reached a predetermined level of fullness.
  • a desired level of fullness of a vessel having a total capacity of approximately ten and one-half gallons would be approximately eight gallons, leaving an air space of approximately two and one-half gallons above the solid waste within the vessel.
  • the full indicator rod 37 will start to rise above the top of the vessel as soon as the waste material within the vessel reaches the unsupported level of the float 40 at the inner end of the rod 37, for example, approximately one gallon below the desired maximum level of fullness of vessel. Accordingly, when the full indicator rod 37 first starts to move upwardly, the operator will know that the vessel still has the capacity to receive approximately another gallon of waste material before the full indicator rod reaches its uppermost position.
  • the full indicator rod may be brightly colored, for example, red, making it easily detectable as it starts to rise above the top of the cover.
  • the upper end of the rod may have graduations thereon indicating the level of fullness if desired.

Landscapes

  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Refuse Receptacles (AREA)

Abstract

Une cuve de rétention (1) pour déchets liquides comporte une conduite d'entrée qui permet d'introduire les déchets liquides dans le récipient (1), lequel contient un agent gélifiant (50) qui, en entrant en contact avec les déchets liquides (w), transforme ces derniers en un gel non coulant (w'). On applique de préférence une couche de cet agent gélifiant (50) sur la surface interne (51) du récipient (1). Un indicateur de basculement (60) indique si la cuve (1) a été basculée après avoir été mise en service. De plus, un indicateur de fonctionnement (65) indique que la cuve (1) est en service et que l'indicateur de basculement (60) a été libéré. Un indicateur de remplissage indique le moment où le contenu de la cuve atteint un niveau prédéterminé. La conduite d'entrée (2) de la cuve (1) peut être raccordée à l'orifice d'un drain (3) provenant d'une table d'embaumement (4) grâce à un tube extensible (5) qui permet de régler la hauteur de cette table (4).
PCT/US1993/005970 1992-06-25 1993-06-22 Cuves de retention pour dechets liquides Ceased WO1994000167A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002138968A CA2138968A1 (fr) 1992-06-25 1993-06-22 Recipients de confinement destines a des dechets liquides
AU46462/93A AU4646293A (en) 1992-06-25 1993-06-22 Containment vessels for liquid waste

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US07/906,942 1992-06-25
US07/906,942 US5380308A (en) 1992-06-25 1992-06-25 Containment vessels for liquid waste
US07/906,206 US5401261A (en) 1992-06-25 1992-06-25 Containment vessels for handling and disposing of liquid waste
US07/906,206 1992-06-25

Publications (1)

Publication Number Publication Date
WO1994000167A1 true WO1994000167A1 (fr) 1994-01-06

Family

ID=27129453

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1993/005970 Ceased WO1994000167A1 (fr) 1992-06-25 1993-06-22 Cuves de retention pour dechets liquides

Country Status (3)

Country Link
AU (1) AU4646293A (fr)
CA (1) CA2138968A1 (fr)
WO (1) WO1994000167A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4505218A (en) * 1982-08-13 1985-03-19 United States Of America As Represented By The United States Department Of Energy Tamper-indicating seal
US5242434A (en) * 1990-12-20 1993-09-07 Terry William M Medical waste handling system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4505218A (en) * 1982-08-13 1985-03-19 United States Of America As Represented By The United States Department Of Energy Tamper-indicating seal
US5242434A (en) * 1990-12-20 1993-09-07 Terry William M Medical waste handling system

Also Published As

Publication number Publication date
AU4646293A (en) 1994-01-24
CA2138968A1 (fr) 1994-01-06

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