# US 12,594,412 B2 · Flush syringe with multiple scrubbing devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,594,412 B2 - Document ID: US12594412B2 - Status: Granted - Kind: B2 - Application number: 18/047,735 - Filed: 2022-10-19 - Published: 2024-04-25 - Granted: 2026-04-07 - Earliest claimed: 2022-10-19 - Assignees: Becton, Dickinson and Company - Applicants: Becton, Dickinson and Company - Inventors: Alban Yee; Shishir Prasad; Manish Kumar; Narasinha C. Parasnis - Web page: https://patentgrep.com/patent/US12594412B2 ## CPC - A61M 5/001: {Apparatus specially adapted for cleaning or sterilising syringes or needles} - A61M 39/16: having provision for disinfection or sterilisation {(A61M39/143 takes precedence)} - A61M 39/162: {with antiseptic agent incorporated within the connector} - A61M 39/20: Closure caps or plugs for connectors or open ends of tubes - A61M 39/1033: {Swivel nut connectors, e.g. threaded connectors or bayonet-connectors} - 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 An integrated disinfection device is described syringe assembly having two integrated disinfection units assembled to a syringe for disinfecting and sterilizing corresponding medical connectors, specifically access ports of corresponding medical connectors. The integrated disinfection unit includes a first cup and a second cup. The first cup having a chamber containing a first absorbent material, a first disinfectant or an antimicrobial agent in the first cup, and a first peelable seal. The second cup having a chamber containing a second absorbent material, a second disinfectant or an antimicrobial agent in the second cup, and a second peelable seal. A threaded connection is disposed on the bottom exterior surface of the first cup having threads that are sized and pitched to engage threads of a luer lock collar on the distal end of the syringe barrel to allow the first cup to be connected to the syringe assembly. The second cup and the syringe assembly are interlocked through interference fit or snap fit of the thumb press of the syringe and ledge of the second cup. ## Claims ### Claim 1 A disinfection device comprising: a scrubbing device having a first cup, a second cup, and a bottom wall spanning an entirety of the first cup and the second cup, wherein the first cup and the second cup are bounded by a dividing wall, the first cup including a first integral body, a first closed end, a first annular wall having a length LC extending from the first closed end to a first open end and defining a first chamber containing a first absorbent material and a first disinfectant, the first open end having a peripheral ledge extending radially inward from the first open end defining an end face and an engagement surface; a first peelable seal disposed on the end face of the first cup to prevent the first disinfectant from exiting the first chamber; a connection element is disposed on the bottom wall of the first cup of the scrubbing device, wherein the connection element is a threaded post; the second cup including a second integral body, a second closed end, a second annular wall having a length LC extending from the second closed end to a second open end and defining a second chamber containing a second absorbent material and a second disinfectant, the second open end having a peripheral ledge extending radially inward from the second open end defining a second end face and a second engagement surface; and a second peelable seal disposed on the second end face of the second cup to prevent the second disinfectant from exiting the second chamber. ### Claim 2 (depends on 1) The disinfection device of claim 1, wherein the connection element is a luer lock collar. ### Claim 3 (depends on 1) The disinfection device of claim 1, wherein the threaded post mates with a luer lock collar of a flush syringe. ### Claim 4 (depends on 1) The disinfection device of claim 1, wherein the peripheral ledge is sized and adapted to receive a thumb press of a plunger rod. ### Claim 5 (depends on 1) The disinfection device of claim 1, wherein the first cup and the second cup comprise a polypropylene or polyethylene material. ### Claim 6 (depends on 1) The disinfection device of claim 1, wherein the first absorbent material and second absorbent material is a foam. ### Claim 7 (depends on 6) The disinfection device of claim 6, wherein the first absorbent material and second absorbent material is a polyurethane foam. ### Claim 8 (depends on 1) The disinfection device of claim 1, wherein the first absorbent material and second absorbent material is a sponge. ### Claim 9 (depends on 1) The disinfection device of claim 1, wherein the first absorbent material and second absorbent material has slits. ### Claim 10 (depends on 1) The disinfection device of claim 1, wherein a compression of the first absorbent material and second absorbent material toward the first closed end of the first chamber and second chamber occurs upon connection to a medical connector. ### Claim 11 (depends on 10) The disinfection device of claim 10, wherein contact with the first absorbent material and second absorbent material disinfects the medical connector. ### Claim 12 (depends on 1) The disinfection device of claim 1, wherein the first disinfectant and second disinfectant is selected from a group consisting essentially of isopropyl alcohol, ethanol, 2-propanol, butanol, methylparaben, ethylparaben, propylparaben, propyl gallate, butylated hydroxyanisole (BHA), butylated hydroxytoluene, t-butyl-hydroquinone, chloroxylenol, chlorohexidine, chlorhexidine diacetate, chlorohexidine gluconate, povidone iodine, alcohol, dichlorobenzyl alcohol, dehydroacetic acid, hexetidine, triclosan, hydrogen peroxide, colloidal silver, benzethonium chloride, benzalkonium chloride, octenidine, antibiotic, and mixtures thereof. ### Claim 13 (depends on 12) The disinfection device of claim 12, wherein the first disinfectant and second disinfectant comprises at least one of chlorhexidine gluconate and chlorhexidine diacetate. ### Claim 14 (depends on 12) The disinfection device of claim 12, wherein the first disinfectant and second disinfectant is a fluid or a gel. ### Claim 15 (depends on 1) The disinfection device of claim 1, wherein the first peelable seal and second peelable seal comprises an aluminum or multi-layer polymer film peel back top. ### Claim 16 (depends on 1) The disinfection device of claim 1, wherein the first peelable seal and second peelable seal is heat-sealed or induction sealed to the engagement surface. ### Claim 17 (depends on 1) The disinfection device of claim 1, wherein the threaded post is disposed in the center of the bottom wall of the scrubbing device, adjoining the dividing wall. ### Claim 18 (depends on 1) An assembly comprising: a disinfection unit of claim 1 connected with a syringe assembly including a syringe barrel having an elongate body defining a chamber, an open proximal end having a flange and a distal end having a tip having a passageway therethrough in fluid communication with the chamber, a stopper connected to an elongate plunger rod having a thumb press at its proximal end, and a locking luer-type collar on the distal end of the syringe barrel; the first cup connected to the locking luer-type collar on the distal end of the syringe barrel; and the second cup of the scrubbing device is snap fit to the thumb press of the elongate plunger rod of the syringe assembly. ### Claim 19 (depends on 18) A method of disinfecting a medical connector comprising: connecting the assembly of claim 18 to a medical connector, wherein connecting includes removing the second cup from the syringe assembly, peeling a top web of the first peelable seal from the first cup; inserting a NFC into the chamber of the first cup and contacting the NFC with the first absorbent material soaked with a first disinfectant; removing first cup of the scrubbing device from the syringe barrel by applying a torque on the assembly thus unthreading first cup from the locking luer-type collar at the distal end of barrel; attaching a flush syringe to an IV catheter line by engages threads of the luer lock collar on the distal end of the syringe barrel to connect the NFC to the flush syringe and flushing the IV catheter line; unthreading the flush syringe from the NFC and peeling the top web from the second cup to expose the second absorbent material soaked in the second disinfectant; and inserting the NFC into the chamber of the second cup and contacting the NFC with the first absorbent material soaked with the first disinfectant.