Medical suction system

1. A suction system, comprising:

a canister;

a liner receivable within the canister and having an outwardly extending flange; and

a lid positionable on the liner and the canister when the liner is received within the canister, the lid having a peripheral snap ring having one or more surfaces configured to engage portions of the canister in a snap-fit relationship, a peripheral seal member spaced interiorly apart from the snap ring and extending from an interior surface of the lid and positionable to engage and bear against an upstanding portion of the canister to provide a seal between the atmosphere and exterior portions of the liner located within the canister, and a peripheral adhesive material adhered to the interior surface of the lid adjacent the peripheral seal member and positionable to adhere to the flange of the liner when the lid is installed on the liner to provide a seal between the interior of the liner and locations exterior the liner.

2. The system of claim 1 , wherein the liner includes a plurality of alignment tabs extending outwardly from the flange for aligning the lid with the liner.

3. The system of claim 1 , wherein the canister has an open upper end that includes a first peripheral upstanding member adjacent the upper end and a second peripheral upstanding member adjacent the upper end and located radially outwardly of the first peripheral upstanding member and having a height greater than the height of the first peripheral upstanding member.

4. The system of claim 3 , wherein the liner has an upper open end that includes an outwardly extending peripheral flange, the flange being supported by the first peripheral upstanding member of the canister when the lid is installed.

5. The system of claim 4 , wherein the peripheral snap ring matingly engages the second peripheral upstanding member when the lid is installed.

6. The system of claim 1 , wherein the lid further includes a pilot ring configured to extend interior a sidewall of the liner for aligning the lid with the liner.

7. The system of claim 1 , further comprising a source of negative pressure, a first port extending through the lid for placing the interior of the liner in flow communication with the source of negative pressure, a second port extending through the lid for entry of fluids from a patient as a result of negative pressure being applied to the interior of the liner.

8. The system of claim 1 , wherein the liner includes a chevron-shaped flange and an interior surface of the peripheral seal member of the lid includes a stop configured to engage the chevron-shaped flange to inhibit separation of the lid from the adhesive when the lid is installed.

9. The system of claim 1 , wherein the adhesive comprises a pressure sensitive adhesive.

10. A suction system, comprising:

a canister;

a liner receivable within the canister and having an outwardly extending flange; and

a lid positionable on the liner and the canister when the liner is received within the canister, the lid having a peripheral snap ring having one or more surfaces configured to engage portions of the canister in a snap-fit relationship, a peripheral seal member spaced interiorly apart from the snap ring and extending from an interior surface of the lid and positionable to bear against a portion of the canister to provide a seal between the atmosphere and exterior portions of the liner located within the canister, a pilot ring configured to extend interior a sidewall of the liner for aligning the lid with the liner, and a peripheral adhesive material adhered to the interior surface of the lid adjacent the peripheral seal member and positionable to adhere to the flange of the liner when the lid is installed on the liner to provide a seal between the interior of the liner and locations exterior the liner.