Liquid waste disposal and canister flushing system and method

A liquid waste disposal and canister flushing system for a canister including a lid with an accessory port, a base with a drain opening and a frusto-conical sidewall connected to the lid and the base, which system is connected to water and cleansing solution sources and comprises:

• (a) a cabinet including:
• 1) a sink receiving the canister and having a sink floor;
• 2) a subsink having a mouth open at the sink floor and a subsink bottom positioned below the level of said sink floor;
• and
• 3) said subsink at least partially receiving the canister with the subsink mouth engaging the canister sidewall;
• (b) a plunger subassembly including:
• 1) a stopper having a closed position in said drain opening closing same and an open position in said subsink below said container base;
• and
• 2) a rod having a lower end connected to said stopper and an upper end positioned within said accessory port with said stopper in its open position;
• (c) a water inlet line connected to the water source;
• (d) a cleaning solution line connected to the cleaning solution source;
• (e) an injection jet including:
• 1) a body with upper and lower ends;
• 2) a longitudinal axis;
• 3) a water inlet port located at said upper end off-center with respect to said longitudinal axis;
• 4) a cleaning solution inlet port located at said upper end off-center with respect to said longitudinal axis;
• 5) a discharge orifice located at said lower end off-center with respect to said longitudinal axis;
• 6) a jet passage extending between and open at said water inlet port and said discharge orifice, said jet passage being angularly skewed with respect to said longitudinal axis;
• and
• 7) a cleaning solution inlet passage extending from said cleaning solution inlet port to said jet passage;
• and
• (f) a control system including:
• 1) a microprocessor;
• 2) a valve in said water inlet line, said microprocessor being connected to said valve for actuating same;
• and
• 3) said microprocessor including flush cycle duration control means for controlling a duration of said flush cycle by means of said water valve.

A method of disposing liquid waste from a canister having a lid with an accessory port, a base with a drain opening and a canister sidewall connected to the canister lid and canister base, which comprises the steps of:

• (a) providing the canister with a drain valve closing the drain opening and a drain valve opening mechanism;
• (b) inserting an injection jet into the accessory port and simultaneously operating the drain valve opening mechanism to open the drain valve;
• (c) draining the canister waste contents;
• and
• (d) flushing the canister via the injection jet.

A method of disposing of liquid waste from a canister having a lid with a accessory port, a base with a drain opening and a sidewall connected to the lid and the base, which includes the steps of:

• a) providing a cabinet with a sink having a sink floor;
• b) providing a subsink with a mouth open at the sink floor and a subsink bottom having a subsink drain opening in spaced relation below the sink mouth;
• c) providing a plunger subassembly with a stopper in said canister drain opening and a rod with a lower end connected to the stopper and an upper end in the canister lid discharge opening;
• d) connecting a drain line to the subsink drain opening;
• e) placing a lower portion of the canister within the subsink with the subsink mouth engaging the canister sidewall and the canister base in spaced relation above the subsink bottom;
• f) providing a water source;
• g) providing a cleaning solution source;
• h) providing an injection jet with a body having an upper end with a water inlet port connected to said water source and a cleaning solution inlet port connected to said cleaning solution source and a lower end with a discharge orifice;
• i) providing a jet passage within said body from said water inlet port to said discharge orifice;
• j) providing a cleaning solution passage within said body from said cleaning solution inlet port to said jet passage;
• k) inserting said injection jet body into said discharge opening;
• l) engaging said rod upper end with said injection jet body lower end;
• m) ejecting said stopper from said canister drain opening and into said subsink;
• n) draining said liquid waste from said canister into said subsink and into said drain line;
• o) injecting water from said water source into said injection jet;
• p) drawing cleaning solution from said cleaning solution passage into said jet passage by venturi action;
• q) discharging diluted cleaning solution from said discharge orifice into said canister;
• r) draining said diluted cleaning solution from said canister into said subsink and into said drain line;
• s) providing a control system with a microprocessor;
• and
• t) delaying said flush cycle until said drain cycle is complete.

A liquid waste disposal and canister flushing system for a canister having a lid with an accessory port, a base and a drain opening, which system comprises:

• (a) a cabinet including a receptacle means for receiving at least a lower portion of the canister and the liquid waste contents thereof;
• (b) drain valve means associated with said drain opening and having open and closed positions respectively opening and closing said drain opening;
• (c) drain valve actuating means for opening said drain valve;
• (d) an injection jet selectively received in said accessory port and including an upper end with an inlet port, a lower end with a discharge orifice and a jet passage extending between said inlet port and said discharge orifice, said discharge orifice being directed into said canister;
• (e) said cabinet having a sink for receiving the canister and the sink having a subsink including said receptacle means;
• (f) said sink having a sink floor;
• (g) said subsink having a mouth open at said sink floor and a subsink bottom;
• and
• (h) a drain communicating with said subsink bottom.

A liquid waste disposal and canister flushing system for a canister having a lid with an accessory port, a base and a drain opening, which system comprises:

• (a) a cabinet including a receptacle means for receiving at least a lower portion of the canister and the liquid waste contents thereof;
• (b) drain valve means associated with said drain opening and having open and closed positions respectively opening and closing said drain opening;
• (c) drain valve actuating means for opening said drain valve;
• (d) an injection jet selectively received in said accessory port and including an upper end with an inlet port, a lower end with a discharge orifice and a jet passage extending between said inlet port and said discharge orifice, said discharge orifice being directed into said canister;
• (e) a body with upper and lower ends;
• (f) a water inlet port at said upper end;
• (g) a cleaning solution inlet port at said upper end;
• (h) a discharge orifice at said lower end;
• (i) a jet passage extending from said water inlet port to said discharge orifice;
• and
• (j) a cleaning solution passage extending from said cleaning solution inlet port to said jet passage and forming an intersection therewith.

A liquid waste disposal and canister flushing system for a canister having a lid with an accessory port, a base and a drain opening, which system comprises:

• (a) a cabinet including a receptacle means for receiving at least a lower portion of the canister and the liquid waste contents thereof;
• (b) drain valve means associated with said drain opening and having open and closed positions respectively opening and closing said drain opening;
• (c) drain valve actuating means for opening said drain valve;
• (d) an injection jet selectively received in said accessory port and including an upper end with an inlet port, a lower end with a discharge orifice and a jet passage extending between said inlet port and said discharge orifice, said discharge orifice being directed into said canister;
• (e) a control system including means for supplying water to said injection jet water inlet port for a flush cycle comprising a predetermined duration;
• and
• (f) means for delaying the commencement of said flush cycle for a predetermined delay interval after the opening of said drain valve means.

A liquid waste disposal and canister flushing system for a canister having a lid with an accessory port, a base and a drain opening, which system comprises:

• (a) a cabinet including a receptacle means for receiving at least a lower portion of the canister and the liquid waste contents thereof;
• (b) drain valve means associated with said drain opening and having open and closed positions respectively opening and closing said drain opening;
• (c) drain valve actuating means for opening said drain valve;
• (d) an injection jet selectively received in said accessory port and including an upper end with an inlet port, a lower end with a discharge orifice and a jet passage extending between said inlet port and said discharge orifice, said discharge orifice being directed into said canister;
• (e) said canister base has a configuration which is concave from an interior of said canister and includes said drain opening therein;
• (f) said canister includes an annular lip projecting downwardly from said base;
• (g) said lip includes a lower edge;
• and
• (h) said lip includes a drain notch extending from its lower edge to said canister base.

A method of disposing liquid waste from a canister having a lid with an accessory port, a base with a drain opening and a canister sidewall connected to the canister lid and canister base, which comprises the steps of:

• a) providing the canister with a drain valve closing the drain opening;
• b) opening the drain valve;
• c) draining the canister liquid waste contents;
• d) flushing the canister;
• e) delaying the step of flushing the canister a predetermined length of time after commencing the step of draining the canister;
• f) providing a cabinet with a receptacle;
• g) placing at least a lower portion of the canister in the receptacle;
• h) draining the canister liquid waste contents into the receptacle;
• i) providing the cabinet with a sink having a sink floor;
• j) providing the cabinet with a subsink having a mouth open at the sink floor and a subsink bottom positioned in spaced relation below the sink floor;
• k) providing a drain line from said subsink bottom;
• l) placing a lower portion of said canister in said subsink with said canister base positioned in spaced relation above said subsink bottom;
• m) draining the canister liquid waste contents into the subsink;
• and
• n) draining the canister liquid waste contents from the subsink into the drain line.

A method of disposing liquid waste from a canister having a lid with an accessory port, a base with a drain opening and a canister sidewall connected to the canister lid and canister base, which comprises the steps of:

• a) providing the canister with a drain valve closing the drain opening;
• b) opening the drain valve;
• c) draining the canister liquid waste contents;
• d) flushing the canister;
• e) delaying the step of flushing the canister a predetermined length of time after commencing the step of draining the canister;
• f) providing a water source;
• g) providing an injection jet with a water inlet port and a discharge orifice;
• h) providing a water inlet line;
• i) connecting the water inlet line to the water source and to the injection jet water inlet port;
• j) inserting the injection jet into the canister accessory opening;
• k) providing a water stream from said water source through said water line, through said injection jet and out of said discharge orifice into said canister;
• l) providing the drain valve with a stopper positioned in the drain opening with the drain valve closed;
• m) providing a plunger rod with a lower end connected to the stopper and an upper end positioned in the accessory opening with the drain valve closed;
• and
• n) engaging said rod upper end with said injection jet, pushing said rod downwardly and ejecting said stopper from said drain opening as said injection jet is inserted in said accessory opening.

A method of disposing liquid waste from a canister having a lid with an accessory port, a base with a drain opening and a canister sidewall connected to the canister lid and canister base, which comprises the steps of:

• a) providing the canister with a drain valve closing the drain opening;
• b) opening the drain valve;
• c) draining the canister liquid waste contents;
• d) flushing the canister;
• e) delaying the step of flushing the canister a predetermined length of time after commencing the step of draining the canister;
• f) providing a water source;
• g) providing an injection jet with a water inlet port and a discharge orifice;
• h) providing a water inlet line;
• i) connecting the water inlet line to the water source and to the injection jet water inlet port;
• j) inserting the injection jet into the canister accessory opening;
• k) providing a water stream from said water source through said water line, through said injection jet and out of said discharge orifice into said canister;
• l) providing a cleaning solution source;
• m) providing a cleaning solution inlet port in said injection jet;
• n) providing a jet passage extending from said water inlet port to said discharge orifice;
• o) providing a cleaning solution passage in said injection jet from said cleaning solution inlet port to said jet passage;
• p) providing a cleaning solution line;
• q) connecting said cleaning solution line to said cleaning solution source and to said cleaning solution inlet port;
• r) drawing cleaning solution through said cleaning solution passage and into said jet passage by venturi action during a flush cycle;
• and
• s) discharging from said discharge orifice a diluted solution mixture of cleaning solution and water.

A method of disposing liquid waste from a canister having a lid with an accessory port, a base with a drain opening and a canister sidewall connected to the canister lid and canister base, which comprises the steps of:

• a) providing the canister with a drain valve closing the drain opening;
• b) opening the drain valve;
• c) draining the canister liquid waste contents;
• d) flushing the canister;
• e) delaying the step of flushing the canister a predetermined length of time after commencing the step of draining the canister;
• f) providing a water source;
• g) providing an injection jet with a water inlet port and a discharge orifice;
• h) providing a water inlet line;
• i) connecting the water inlet line to the water source and to the injection jet water inlet port;
• j) inserting the injection jet into the canister accessory opening;
• k) providing a water stream from said water source through said water line, through said injection jet and out of said discharge orifice into said canister;
• l) providing a control system with a microprocessor;
• and
• m) programming the microprocessor with a delay interval corresponding to a drain cycle with said drain valve open for a predetermined time limit prior to commencing the flush cycle.

A method of disposing liquid waste from a canister having a lid with an accessory port, a base with a drain opening and a canister sidewall connected to the canister lid and canister base, which comprises the steps of:

• a) providing the canister with a drain valve closing the drain opening;
• b) opening the drain valve;
• c) draining the canister liquid waste contents;
• d) flushing the canister;
• e) delaying the step of flushing the canister a predetermined length of time after commencing the step of draining the canister;
• f) providing a water source;
• g) providing an injection jet with a water inlet port and a discharge orifice;
• h) providing a water inlet line;
• i) connecting the water inlet line to the water source and to the injection jet water inlet port;
• j) inserting the injection jet into the canister accessory opening;
• k) providing a water stream from said water source through said water line, through said injection jet and out of said discharge orifice into said canister;
• l) reusing said canister;
• and
• m) discarding said canister lid and said drain valve.

A liquid medical waste disposal and canister flushing system for a canister having a lid with an accessory port, a base and a drain opening, which system comprises:

• (a) a cabinet including a receptacle sized to receive at least a lower portion of the canister and the liquid waste contents thereof;
• (b) a plunger subassembly comprising:
• (i) a drain valve stopper associated with said drain opening and having open and closed positions respectively opening and closing said drain opening;
• and
• (ii) a plunger subassembly rod having a lower end connected to said stopper and an upper end extending into said accessory port;
• and
• (c) an injection jet selectively received in said accessory port and including an upper end with an inlet port, a lower end with a discharge orifice and a jet passage extending between said inlet port and said discharge orifice, said discharge orifice being directed into said canister.