# US 8,539,951 B1 · Oscillating positive respiratory pressure device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,539,951 B1 - Document ID: US8539951B1 - Status: Granted - Kind: B1 - Application number: 12/472,215 - Filed: 2009-05-26 - Granted: 2013-09-24 - Earliest claimed: 2008-05-27 - Assignees: Trudell Medical International - Applicants: Adam Meyer; Dan Engelbreth - Inventors: Adam Meyer; Dan Engelbreth - Web page: https://patentgrep.com/patent/US8539951B1 ## CPC - A61M 16/0006: {with means for creating vibrations in patients' airways} - A61M 16/0057: {Pumps therefor} - A61M 16/0066: {Blowers or centrifugal pumps} - A61M 16/0096: {High frequency jet ventilation} - A61M 16/0866: {Passive resistors therefor} - A61M 16/14: by mixing different fluids, one of them being in a liquid phase - A61M 16/20: Valves specially adapted to medical respiratory devices - A61M 16/208: {Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves} - A61M 11/06: of the injector type - A61M 16/0816: {Joints or 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 oscillating positive respiratory pressure apparatus and a method of performing oscillating positive respiratory pressure therapy. The apparatus includes a housing having an interior chamber, a chamber inlet, a chamber outlet, an exhalation flow path defined between the inlet and the outlet, and a restrictor member rotatably mounted within the interior chamber. The restrictor member has an axis of rotation that is substantially perpendicular to the flow path at the inlet, and includes at least one blocking segment. Rotation of the restrictor member moves the at least one blocking segment between an open position and a closed position. Respiratory pressure at the chamber inlet oscillates between a minimum when the at least one blocking segment is in the open position and a maximum when the at least one blocking segment is in the closed position. By exhaling into the apparatus, oscillating positive expiratory pressure therapy is administered. ## Claims ### Claim 1 An oscillating positive respiratory pressure apparatus comprising: a housing having an interior chamber; a chamber inlet in communication with the chamber; a chamber outlet in communication with the chamber; an exhalation flow path defined between the inlet and the outlet; and, a restrictor member rotatably mounted within the interior chamber, the restrictor member having an axis of rotation substantially perpendicular to the exhalation flow path at the inlet or the outlet and being rotatable through a complete revolution, the restrictor member having at least one blocking segment; wherein the restrictor member is movably positioned with respect to one of the inlet or the outlet such that rotation of the restrictor member moves the at least one blocking segment between an open position where the exhalation flow path at the one of the inlet or the outlet is unrestricted and a closed position where the exhalation flow path at the one of the inlet or the outlet is restricted, and wherein exhalation pressure at the inlet oscillates between a minimum when the at least one blocking segment is in the open position and a maximum when the at least one blocking segment is in the closed position. ### Claim 2 (depends on 1) The oscillating positive respiratory pressure apparatus of claim 1, further comprising a shaft connecting a source of rotational energy to the restrictor member. ### Claim 3 (depends on 2) The oscillating positive respiratory pressure apparatus of claim 2, wherein the source of rotational energy comprises a motor adapted to rotate the shaft. ### Claim 4 (depends on 1) The oscillating positive respiratory pressure apparatus of claim 1, further comprising a second restrictor member rotatably mounted within the interior chamber and operatively connected to the shaft, the second restrictor member having at least one blocking segment, wherein the shaft is moveable along its axis of rotation to position the second restrictor member with respect to the one of the inlet or the outlet such that rotation of the shaft moves the second restrictor member between the open position and the closed position. ### Claim 5 (depends on 4) The oscillating positive respiratory pressure apparatus of claim 4, wherein a number of blocking segments on the restrictor member and a number of blocking segments on the second restrictor member are different. ### Claim 6 (depends on 1) The oscillating positive respiratory pressure apparatus of claim 1, further comprising a turbine operatively connected to the restrictor member and adapted to rotate the restrictor member in response to receiving a flow of air. ### Claim 7 (depends on 6) The oscillating positive respiratory pressure apparatus of claim 6, further comprising a turbine housing surrounding the turbine, the turbine housing having a compressed air inlet configured to receive compressed air from a compressed air source and an exhaust outlet. ### Claim 8 (depends on 1) The oscillating positive respiratory pressure apparatus of claim 1, further comprising a respiratory portal in fluid communication with the inlet, the respiratory portal including a mouthpiece and a nebulizer port. ### Claim 9 (depends on 8) The oscillating positive respiratory pressure apparatus of claim 8, further comprising an inhalation flow path defined between the mouthpiece and the nebulizer port, wherein the inhalation flow path does not traverse the exhalation flow path defined between the inlet and the outlet. ### Claim 10 (depends on 1) The oscillating positive respiratory pressure apparatus of claim 1, wherein the restrictor member is configured to rotate in response to exhaled air traversing the exhalation flow path. ### Claim 11 (depends on 1) The oscillating positive respiratory pressure apparatus of claim 1, wherein the restrictor member is configured to move between the open position and the closed position independent of the exhalation pressure at the inlet. ### Claim 12 (depends on 1) The oscillating positive respiratory pressure apparatus of claim 1, wherein the restrictor member is removably mounted within the interior chamber. ### Claim 13 (depends on 1) The oscillating positive respiratory pressure apparatus of claim 1, wherein the restrictor member further comprises a plurality of vanes configured to rotate the restrictor member in response to exhaled air traversing the exhalation flow path. ### Claim 14 (depends on 1) The oscillating positive respiratory pressure apparatus of claim 1, wherein the at least one blocking segment has a cross-sectional area greater than a cross-sectional area of the one of the inlet or the outlet. ### Claim 15 (depends on 1) The oscillating positive respiratory pressure apparatus of claim 1, wherein the housing includes a one-way valve configured to allow air to enter the interior chamber through a valve opening. ### Claim 16 (depends on 1) The oscillating positive respiratory pressure apparatus of claim 1, wherein a center of gravity of the restrictor member is radially offset from an axis of rotation of the restrictor member. ### Claim 17 (depends on 1) The oscillating positive respiratory pressure apparatus of claim 1, wherein the at least one blocking segment is configured to move between the open position and the closed position independent of the exhalation pressure at the inlet.