# US 4,397,643 A · Drainage collection device with disposable liner > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,397,643 A - Document ID: US4397643A - Status: Granted - Kind: A - Application number: 06/259,886 - Filed: 1981-05-04 - Granted: 1983-08-09 - Earliest claimed: 1981-05-04 - Assignees: Sherwood Medical Company - Inventors: Sharon A. Rygiel - Web page: https://patentgrep.com/patent/US4397643A ## CPC - A61M 1/602: {Mechanical means for preventing flexible containers from collapsing when vacuum is applied inside, e.g. stents} - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract A drainage collection device is provided which includes a relatively rigid reusable canister and a collapsible drainage collection liner. The lid and upper wall of the liner have cooperating connectors for holding the upper end of the liner in place. The canister has an abutment adjacent the lower end for holding the lower end portion of the liner adjacent the lower end of the canister. The liner has a bellows-like sidewall so that the liner can be stored in a collapsed condition. ## Claims ### Claim 1 A body fluid drainage collection device comprising a relatively rigid canister including a hollow container having a bottom wall and sidewalls connected to said bottom wall, and a lid connected to said sidewalls and having an opening therethrough, a flexible, collapsible drainage collection liner means removably insertable into said canister and having a lower portion with a bottom wall, sidewalls, and an upper portion with an upper wall integrally connected with said liner means bottom wall and sidewalls forming a drainage collection chamber, said liner means being collapsible to reduce the height thereof when free of said canister, suction outlet and drainage inlet conduits fixedly connected directly to said liner means upper wall and communicating with said chamber for communicating said chamber respectively with a source of vacuum and a source of body fluid drainage, both of said outlet and inlet conduits extending through said opening in said lid, and means connecting said liner means within said canister to maintain said liner means expanded during the application of vacuum to said outlet conduit including first connector means having securing abutment means on the walls of said opening of said lid, second connector means including a neck with abutment means on said upper wall of said liner means releaseably engageable with said abutment means on said walls of said opening of said first connector means to secure the upper portion of said liner to said lid, and holding means on said canister engageable with the lower portion of said liner means to circumferentially hold the lower portion in place, said sidewalls of said liner means being structured to prevent lateral collapse thereof without countervailing for the negative pressure on the inside of the liner means when said outlet is connected with a source of vacuum. ### Claim 2 (depends on 1) The device of claim 1 wherein said sidewalls of said liner means are in the form of bellows to resist lateral collapse thereof when said outlet is connected with a source of vacuum. ### Claim 3 (depends on 1, 2) The device of claims 1 or 2 wherein said first connector means includes a first threaded connector on said lid, and said second connector means includes a second threaded connector on said upper wall of said liner means threadedly engageable with said first threaded connector. ### Claim 4 (depends on 3) The device of claim 3 wherein said first threaded connector includes an upwardly extending collar integral with said lid, and said second threaded connector includes an upwardly extending neck integral with said upper wall of said liner means threadedly engageable with said first threaded connector. ### Claim 5 (depends on 3) The device of claim 3 wherein said lid is removably connectable to said container sidewalls. ### Claim 6 (depends on 1, 2) The device of claim 1 or 2 wherein said holding means includes an annular peripheral abutment on the interior of said container adjacent the lower end thereof engageable with the lower end portion of said liner means to hold it in place. ### Claim 7 (depends on 1) The device of claim 1 wherein said bottom wall of said liner includes means for providing a discharge opening therethrough for discharging drainage therefrom. ### Claim 8 (depends on 7) The device of claim 7 wherein said bottom wall of said canister includes an opening therethrough in registration with said means for providing said discharge opening. ### Claim 9 (depends on 1, 2) The device of claim 1 or 2 wherein said liner is made of a material including plastic. ### Claim 10 A body fluid drainage collection device comprising a relatively rigid canister including a hollow container having a bottom wall and sidewalls connected to said bottom wall, and a lid connected to said sidewalls, a flexible, collapsible drainage collection liner removably insertable into said canister and having a lower portion with a bottom wall, sidewalls, and an upper portion with an upper wall integrally connected with said liner bottom and sidewalls forming a drainage collection chamber, suction outlet and drainage inlet conduits connected directly to said liner and communicating with said chamber for communicating said chamber respectively with a source of vacuum and a source of body fluid drainage, and means connecting said liner within said canister to maintain said liner expanded during the application of vacuum to said outlet conduit including first connector means on said lid, second connector means on said upper wall of said liner releaseably engageable with said first connector means to secure the upper portion of said liner to said lid, and circumferential holding means on the interior walls of said canister engageable with the lower portion of said liner to hold the same in place, said lid including an upwardly extending integral collar, said liner being a substantially single-piece member, said upper wall of said liner including an upwardly extending integral neck receivable in said collar in concentric relation therewith, said neck having an upper wall portion, and said inlet and outlet conduits being connected to said upper wall portion in sealing connection therewith. ### Claim 11 (depends on 8) The device of claim 8 wherein said outlet and inlet conduits extend through said collar. ### Claim 12 (depends on 10) The device of claim 10 wherein said first and second connector means respectively include complementary threads on said collar and neck for threadedly connecting them together. ### Claim 13 A body fluid drainage collection device comprising a relatively rigid canister including a hollow container having a bottom wall and sidewalls connected to said bottom wall, and a lid connected to said sidewalls, a flexible, collapsible drainage collection liner removably insertable into said canister and having a lower portion with a bottom wall, sidewalls, and an upper portion with an upper wall integrally connected with said liner bottom and sidewalls forming a drainage collection chamber, suction outlet and drainage inlet conduits connected directly to said liner and communicating with said chamber for communicating said chamber respectively with a source of vacuum and a source of body fluid drainage, and means connecting said liner within said canister to maintain said liner expanded during the application of vacuum to said outlet conduit including first connector means on said lid, second connector means on said upper wall of said liner releaseably engageable with said first connector means to secure the upper portion of said liner to said lid, and circumferential holding means on said canister interior walls engageable with the lower portion of said liner to hold the same in place, said first connector means including a collar on said lid with first peripherally extending abutment means thereon, said second connector means including a neck on said upper wall with second peripherally extending abutment means thereon engageable with said first abutment means to secure said upper portion of said liner relative to said canister. ### Claim 14 (depends on 1, 13) The device of claim 1 or 13 wherein said canister is spilt into a pair of parts whereby said liner can be inserted between said parts, said parts being movable toward each other to effect engagement between said first and second abutment means. ### Claim 15 (depends on 14) The device of claim 14 wherein said canister is of plastic and further includes hinge means connecting said parts together for movement relative to each other. ### Claim 16 (depends on 15) The device of claim 15 wherein said canister is formed as an integral single-piece plastic member with said hinge means an integral portion of said member. ### Claim 17 (depends on 14) The device of claim 14 wherein said lid is integral with said sidewalls of said canister and said bottom wall, said sidewalls, and said lid of said canister are divided into two parts to permit said canister to be opened and closed. ### Claim 18 (depends on 14) The device of claim 14 wherein said sidewall of said liner is pleated to form a bellows-like configuration. ### Claim 19 (depends on 10, 13) The apparatus of claim 10 or 13 wherein said liner is formed of a material including a plastic, said material being flexible and corrugated to permit collapse of said liner but rigid enough to prevent collapse of said liner while in said canister with suction applied to said suction outlet port at vacuum levels normally used for body fluid drainage.