# US 10,765,839 B2 · Inflation device with detachable housing and related methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,765,839 B2 - Document ID: US10765839B2 - Status: Granted - Kind: B2 - Application number: 15/469,082 - Filed: 2017-03-24 - Published: 2017-09-28 - Granted: 2020-09-08 - Earliest claimed: 2016-03-28 - Assignees: Merit Medical Systems, Inc. - Applicants: Merit Medical Systems, Inc. - Inventors: Jon Davis; Prasad Weerakoon; Russell D. Heyborne - Web page: https://patentgrep.com/patent/US10765839B2 ## CPC - A61M 25/10182: {Injector syringes} - A61M 25/10188: {Inflation or deflation data displays} - A61M 16/044: {External cuff pressure control or supply, e.g. synchronisation with respiration} - A61M 2016/0027: {pressure meter} - A61M 2205/073: Syringe, piston type - A61M 2205/3331: Pressure; Flow - A61M 2205/502: User interfaces, e.g. screens or keyboards - A61M 2205/8206: battery-operated - 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 syringe assembly or inflation device that includes a detachable housing. A pressure-sensing syringe assembly or inflation device can include both a syringe barrel and a housing that is coupled to the syringe barrel in a locked configuration. The inflation device can transition from the locked configuration to the unlocked configuration in which the housing is separable from the syringe barrel. Related methods are also disclosed. ## Claims ### Claim 1 A syringe assembly comprising: an elongate syringe barrel defining a fluid reservoir; an adaptor coupled to the elongate syringe barrel; a housing coupled to the adaptor; a lock coupled to the housing; a pressure transducer; an aperture that extends through a wall of the elongate syringe barrel such that the fluid reservoir of the elongate syringe barrel is in fluid communication with the pressure transducer; and a key, wherein the syringe assembly is configured to transition from a locked configuration in which the lock prevents movement of the adaptor relative to the housing to an unlocked configuration in which the adaptor is free to move relative to the housing, and wherein the key is configured to extend through an orifice in the housing to displace the lock, thereby transitioning the syringe assembly from the locked configuration to the unlocked configuration. ### Claim 2 (depends on 1) The syringe assembly of claim 1, wherein the syringe assembly is configured to prevent complete withdrawal of the key from the housing. ### Claim 3 (depends on 1) The syringe assembly of claim 1, wherein the key comprises an elongate shaft, the elongate shaft comprising a tip configured to displace the lock. ### Claim 4 (depends on 3) The syringe assembly of claim 3, wherein: the key further comprises a hub and a plurality of arms; the elongate shaft extends in a first direction from the hub; and each arm of the plurality of arms extends in a second direction from the hub toward a display screen within the housing, wherein the second direction differs from the first direction. ### Claim 5 (depends on 4) The syringe assembly of claim 4, wherein the housing comprises one or more catches that are configured to: allow at least partial insertion of the key into the housing such that the plurality of arms are disposed proximal of the one or more catches; and prevent complete withdrawal of the key from the housing once the plurality of arms are disposed proximal of the one or more catches. ### Claim 6 (depends on 1) The syringe assembly of claim 1, wherein the housing comprises one or more barrier walls that are configured to limit movement of the key in a proximal direction. ### Claim 7 (depends on 1) The syringe assembly of claim 1, wherein the lock comprises a protrusion having a surface that is angled such that proximal displacement of the key causes the key to contact the surface of the protrusion, thereby displacing the lock to transition the syringe assembly from the locked configuration to the unlocked configuration. ### Claim 8 (depends on 1) The syringe assembly of claim 1, wherein: the adaptor comprises a channel; and the key extends through at least a portion of the channel of the adaptor. ### Claim 9 (depends on 1) The syringe assembly of claim 1, wherein the lock is disposed inside of the housing. ### Claim 10 (depends on 1) The syringe assembly of claim 1, wherein the adaptor comprises a plurality of flanges, wherein each flange of the plurality of flanges is in contact with the housing. ### Claim 11 (depends on 1) The syringe assembly of claim 1, further comprising a circuit board and a display screen, wherein the circuit board and the display screen are each disposed within the housing. ### Claim 12 (depends on 1) The syringe assembly of claim 1, wherein the pressure transducer is disposed between the adaptor and the lock. ### Claim 13 A method of separating components of a pressure-sensing inflation device, the method comprising: obtaining an inflation device comprising: an elongate syringe barrel defining a fluid reservoir; an adaptor coupled to the elongate syringe barrel; a housing coupled to the adaptor, wherein the housing at least partially encloses one or more of a circuit board and a display screen; a lock coupled to the housing; a pressure transducer; an aperture that extends through a wall of the elongate syringe barrel such that the fluid reservoir of the elongate syringe barrel is in fluid communication with the pressure transducer; and a key, wherein the inflation device is configured to transition from a locked configuration in which the lock prevents movement of the adaptor relative to the housing to an unlocked configuration in which the adaptor is free to move relative to the housing, and wherein the key is configured to extend through an orifice in the housing to displace the lock, thereby transitioning the syringe assembly from the locked configuration to the unlocked configuration, moving the key toward the lock such that the key displaces the lock; and separating the housing from the syringe barrel. ### Claim 14 (depends on 13) The method of claim 13, wherein moving the key toward the lock comprises at least partially inserting the key into the housing. ### Claim 15 (depends on 13) The method of claim 13, wherein the lock is coupled to and at least partially disposed within the housing. ### Claim 16 (depends on 13) The method of claim 13, wherein: the key comprises a hub and an elongate shaft that extends from the hub; and moving the key toward the lock comprises pushing directly onto the hub of the key. ### Claim 17 (depends on 13) The method of claim 13, further comprising sending one or more of the circuit board, the display screen, and the housing to a refurbisher after the syringe barrel has been separated from the housing. ### Claim 18 (depends on 13) The method of claim 13, further comprising removing one or more of the circuit board and the display screen from the housing after the housing has been separated from the syringe barrel. ### Claim 19 (depends on 13) The method of claim 13, wherein the lock comprises a surface that is angled such that moving the key toward the lock causes the key to contact the surface and displace the lock.