# US 10,765,591 B2 · Pulmonary expansion therapy (PXT) devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,765,591 B2 - Document ID: US10765591B2 - Status: Granted - Kind: B2 - Application number: 15/472,886 - Filed: 2017-03-29 - Published: 2017-07-13 - Granted: 2020-09-08 - Earliest claimed: 2015-09-25 - Assignees: Delta Dynamics LLC - Applicants: Delta Dynamics LLC - Inventors: Peter Antros - Web page: https://patentgrep.com/patent/US10765591B2 ## CPC - A61H 31/02: Iron lungs - A61B 5/087: Measuring breath flow - A61H 9/0057: {Suction (suction kneading A61H7/008)} - A61H 23/004: {With mechanical drive, e.g. spring mechanism or vibrating unit being hit for starting vibration and then applied to the body of a patient} - A61H 23/02: with electric or magnetic drive - A61B 5/1072: {measuring distances on the body, e.g. measuring length, height or thickness (A61B5/1076 takes precedence)} - A61B 2505/01: Emergency care - A61H 23/006: {Percussion or tapping massage (hand percussion A61H23/06)} - A61H 31/00: Artificial respiration by a force applied to the chest; Heart stimulation, e.g. heart massage (applying electric currents by contact electrodes for stimulation, e.g. heart pace-makers, A61N1/36 {; teaching or training models, demonstration models for medical purposes G09B23/288}) - A61H 2031/025: {using the same pump for pressure and vacuum, not being driven at the respiratory rate, e.g. blowers} - A61H 2201/0103: inflatable - A61H 2201/013: Suction cups - A61H 2201/0153: hand-held - A61H 2201/0157: portable - A61H 2201/1207: with electric or magnetic drive - A61H 2201/1604: Head - A61H 2201/1619: Thorax - A61H 2201/1635: Hand or arm, e.g. handle - A61H 2201/5007: computer controlled - A61H 2201/5025: Activation means - A61H 2201/5071: Pressure sensors - A61H 2201/5076: Frequency sensors - A61H 2205/084: Chest - A61M 16/0006: {with means for creating vibrations in patients' airways} - A61H: PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY (electrotherapy, magnetotherapy, radiation therapy or ultrasound therapy A61N) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - 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 pulmonary expansion therapy (PXT) device may be a handheld device that covers specific lung fields and may generate negative pressure fields locally. The device also may provide vibratory/percussion therapy for airway clearance. The PXT may generate a localized negative pressure field non-invasively to the exterior of the chest wall, thereby increasing the functional residual capacity in underlying lung fields. As a result, increased ventilation and perfusion to the targeted internal lung field may be achieved by creating a decrease in the external barometric pressure relative to the more positive intrinsic airway pressures. The PXT device also may improve lung compliance by enabling a medical professional to grab and elevate the chest wall to compensate for the dysfunction of the respiratory musculature responsible for lifting the chest wall. In some embodiments, once a targeted functional residual capacity (FRC) has been established, vibration or percussion may be applied. ## Claims ### Claim 1 A medical device comprising: a body including an outflow channel; a motor operable to generate a force, the force being either a vibrational force, a percussive force, or both; an adaptor coupled to the motor and the outflow channel; and a shell operatively coupled to the outflow channel via the adaptor to create a negative pressure field within the shell via negative gas flow, the shell selectively couplable to the motor via the adaptor to transfer the force to a patient, where the adaptor is movable between a first position in which the adaptor is operatively coupled to the motor to directly transfer the force from the motor to the shell and a second position in which the shell is substantially disengaged from the motor. ### Claim 2 (depends on 1) The medical device of claim 1, where the shell is an anesthetic mask. ### Claim 3 (depends on 1) The medical device of claim 1, further comprising a locking mechanism operable to lock the adaptor in the first position. ### Claim 4 (depends on 1) The medical device of claim 1, further comprising an activation mechanism movable between a first position in which ambient air is introduced into the outflow channel to interrupt negative gas flow into the shell and a second position in which the negative pressure field is generated within the shell via negative gas flow. ### Claim 5 (depends on 1) The medical device of claim 1, further comprising a handle attached to the body. ### Claim 6 (depends on 1) The medical device of claim 1, further comprising a manometer operatively coupled to the outflow channel. ### Claim 7 (depends on 1) The medical device of claim 1, further comprising a negative pressure relief valve for regulating the negative pressure generated in the outflow channel. ### Claim 8 A medical device comprising: a body including an outflow channel; a manometer operatively coupled to the outflow channel; a motor operable to generate a force, the force being either a vibrational force, a percussive force, or both; an adaptor coupled to the motor and the outflow channel; an anesthetic mask operatively coupled to the outflow channel via the adaptor to create a negative pressure field within the shell via negative gas flow, the anesthetic mask selectively couplable to the motor via the adaptor to transfer the force to a patient; and an activation mechanism movable between a first position in which ambient air is introduced into the outflow channel to interrupt negative gas flow into the anesthetic mask and a second position in which the negative pressure field is generated within the anesthetic mask via negative gas flow, where the adaptor is movable between a first position in which the adaptor is operatively coupled to the motor to directly transfer the force from the motor to the anesthetic mask and a second position in which the anesthetic mask is substantially disengaged from the motor. ### Claim 9 (depends on 8) The medical device of claim 8, further comprising a negative pressure relief valve for regulating the negative pressure generated in the outflow channel. ### Claim 10 (depends on 8) The medical device of claim 8, further comprising a handle attached to the body.