# US 11,433,180 B2 · Vented reservoir for medical pump > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,433,180 B2 - Document ID: US11433180B2 - Status: Granted - Kind: B2 - Application number: 16/673,280 - Filed: 2019-11-04 - Published: 2020-02-27 - Granted: 2022-09-06 - Earliest claimed: 2011-06-23 - Assignees: Debiotech S.A. - Applicants: Debiotech S.A. - Inventors: Eric Chappel; Ricardo Allendes; Frédéric Neftel - Web page: https://patentgrep.com/patent/US11433180B2 ## CPC - A61M 5/14244: {adapted to be carried by the patient, e.g. portable on the body} - A61M 5/14593: {the diaphragm being actuated by fluid pressure} - A61M 5/16859: {Evaluation of pressure response, e.g. to an applied pulse} - A61M 5/16881: {Regulating valves} - A61M 5/5086: {for indicating if defective, used, tampered with or unsterile} - F04D 15/0005: {by using valves} - 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)} - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) ## Abstract The present invention concerns a medical pump comprising: a. A hard housing comprising a top (24) and bottom (1) hard shells, within which a rigid wall (3) and a movable membrane (2) create three distinct chambers; wherein i. said movable membrane tightly separates said second (29) and third (22) chambers ii. said first and third chambers have a watertight interface iii. said second chamber (29) is designed to contain a fluid iv. said first chamber (23) comprises a first venting mean (20) which is arranged to provide a fluidic communication between said first chamber (23) and the external environment; v. said third chamber (22) comprises a second venting mean which is arranged to provide a fluidic communication between said third chamber (22) and the external environment b. A pumping element (4) located in the first chamber (23) c. A least one pressure sensor which measure the pressure gradient between the first chamber (23) and the second chamber (29) d. A fluid pathway which permits: i. a first fluid connection (27) between said second chamber (29) and said pumping element ii. a second fluid connection (28) between said pumping element and a patient line (30). ## Claims ### Claim 1 A delivery medical device comprising: a hard housing having a bottom hard shell and a top hard shell, the hard shell housing including a first chamber, a second chamber intended to store a fluid to be delivered to a patient, and a third chamber separated by at least a movable membrane and a rigid wall, wherein the second chamber and the third chamber are tightly separated by the movable membrane and the first chamber and the third chamber have a watertight interface; a fluid pathway configured to provide a fluid communication between the second chamber and the patient; a pumping device configured to convey the fluid through the fluid pathway to the patient; a vent device configured to vent at least one of the first chamber and the third chamber to the external environment of the delivery medical device; and an energy source for the pumping device located in the first chamber. ### Claim 2 (depends on 1) The device according to claim 1, wherein the energy source requires communication with ambient air. ### Claim 3 (depends on 1) The device according to claim 1, wherein the vent device is configured to vent at least one of the first chamber and the third chamber to provide a fluidic communication or a pressure equilibration between the first chamber and the air ambient or between the third chamber and the air ambient. ### Claim 4 (depends on 1) The device according to claim 1, wherein the vent device includes a first vent configured to vent the first chamber to the external environment of the delivery medical device. ### Claim 5 (depends on 4) The device according to claim 4, wherein the first vent includes a hydrophobic vent. ### Claim 6 (depends on 1) The device according to claim 1, wherein the vent device includes a second vent configured to vent the third chamber to the external environment of the delivery medical device. ### Claim 7 (depends on 6) The device according to claim 6, wherein the second vent provides an air communication and a liquid communication between the external environment and the third chamber. ### Claim 8 (depends on 1) The device according to claim 1, wherein the vent device includes a passage which extends toward inside the delivery medical device up to a baffle. ### Claim 9 (depends on 8) The device according to claim 8, wherein the baffle includes two opposite holes. ### Claim 10 (depends on 8) The device according to claim 8, wherein the baffle provides a mechanical protection against a tip object from the external environment. ### Claim 11 (depends on 1) The device according to claim 1 further comprising: a pressure transducer requiring a pressure equilibration with ambient air at least partly to operate. ### Claim 12 (depends on 11) The device according to claim 11, wherein the pressure transducer includes a gauge pressure sensor. ### Claim 13 (depends on 11) The device according to claim 11, wherein the pressure transducer is configured to measure the pressure gradient between the first chamber and the second chamber. ### Claim 14 (depends on 1) The device according to claim 1, further comprising: a processing device configured to detect an underpressure or overpressure in the first chamber and/or the third chamber. ### Claim 15 A delivery medical device comprising: a movable wall and a rigid wall arranged into a hard housing having a bottom hard shell and a top hard shell; a first chamber, a second chamber intended to store a fluid to be delivered to a patient, and a third chamber, the second chamber and the third chamber are tightly separated by the movable wall and at least one of the first chamber and the third chamber are configured to be watertight; a fluid pathway configured to provide a fluid communication between the second chamber and the patient; a pumping device configured to convey the fluid through the fluid pathway to the patient; a vent device configured to vent at least one of the first chamber and the third chamber to the external environment of the delivery medical device; a pressure transducer configured to measure the fluid pressure in the fluid pathway; and an energy source for the pumping device located in the first chamber. ### Claim 16 (depends on 15) The device according to claim 15, wherein the energy source requires communication with ambient air. ### Claim 17 (depends on 15) The device according to claim 15, wherein the vent device is configured to vent at least one of the first chamber and the third chamber to provide a fluidic communication or a pressure equilibration between the first chamber and the air ambient or between the third chamber and the air ambient. ### Claim 18 (depends on 15) The device according to claim 15, wherein the vent device includes a first vent configured to vent the first chamber to the external environment of the delivery medical device. ### Claim 19 (depends on 18) The device according to claim 18, wherein the first vent includes a hydrophobic vent. ### Claim 20 (depends on 15) The device according to claim 15, wherein the vent device includes a second vent configured to vent the third chamber to the external environment of the delivery medical device. ### Claim 21 (depends on 20) The device according to claim 20, wherein the second vent provides an air communication and a liquid communication between the external environment and the third chamber. ### Claim 22 (depends on 15) The device according to claim 15, wherein the vent device includes a passage which extends toward inside the delivery medical device up to a baffle. ### Claim 23 (depends on 22) The device according to claim 22, wherein the baffle includes two opposite holes. ### Claim 24 (depends on 22) The device according to claim 22, wherein the baffle provides a mechanical protection against a tip object from the external environment. ### Claim 25 (depends on 15) The device according to claim 15, wherein the pressure transducer includes a gauge pressure sensor. ### Claim 26 (depends on 15) The device according to claim 15, wherein the pressure transducer is configured to measure the pressure gradient between the first chamber and the second chamber. ### Claim 27 (depends on 15) The device according to claim 15, further comprising: a processing device configured to detect an underpressure or overpressure in the first chamber and/or the third chamber. ### Claim 28 A delivery medical device comprising: a movable membrane and a rigid wall arranged into a hard housing having a bottom hard shell and a top hard shell; a first chamber, a second chamber intended to store a fluid to be delivered to a patient, and a third chamber defined by at least the flexible membrane and the rigid wall, the second chamber and the third chamber are tightly separated by the movable membrane and at least one of the first chamber and the third chamber have a watertight interface; a fluid pathway configured to provide a fluid communication between the second chamber and the patient; a pumping device configured to convey the fluid through the fluid pathway to the patient; at least one unit, located in the first chamber, requiring communication with ambient air, the at least one unit requiring communication with the ambient air including at least one of an energy source and a pressure transducer; and a vent device configured to vent at least one of the first chamber and the third chamber to provide a fluidic communication or a pressure equilibration between the first chamber and the air ambient or between the third chamber and the air ambient. ### Claim 29 (depends on 28) The device according to claim 28, wherein the vent device includes a first vent configured to vent the first chamber to the external environment of the delivery medical device. ### Claim 30 (depends on 29) The device according to claim 29, wherein the first vent includes a hydrophobic vent. ### Claim 31 (depends on 28) The device according to claim 28, wherein the vent device includes a second vent configured to vent the third chamber to the external environment of the delivery medical device. ### Claim 32 (depends on 31) The device according to claim 31, wherein the second vent provides an air communication and a liquid communication between the external environment and the third chamber. ### Claim 33 (depends on 28) The device according to claim 28, wherein the vent device includes a passage which extends toward inside the delivery medical device up to a baffle. ### Claim 34 (depends on 33) The device according to claim 33, wherein the baffle includes two opposite holes. ### Claim 35 (depends on 33) The device according to claim 33, wherein the baffle is configured to provide a mechanical protection against a tip object from the external environment. ### Claim 36 (depends on 28) The device according to claim 28, wherein the pressure transducer includes a gauge pressure sensor. ### Claim 37 (depends on 28) The device according to claim 28, wherein the pressure transducer is configured to measure the pressure gradient between the first chamber and the second chamber. ### Claim 38 (depends on 28) The device according to claim 28, further comprising: a processing device configured to detect an underpressure or overpressure in the first chamber and/or the third chamber.