# US 11,305,061 B2 · Medicament delivery devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,305,061 B2 - Document ID: US11305061B2 - Status: Granted - Kind: B2 - Application number: 15/757,159 - Filed: 2016-09-02 - Published: 2018-09-06 - Granted: 2022-04-19 - Earliest claimed: 2015-09-03 - Assignees: Owen Mumford Limited - Applicants: Owen Mumford Limited - Inventors: James Grimoldby; Oliver Gareth Hyde; Matthew Watts; Lee Pearson - Web page: https://patentgrep.com/patent/US11305061B2 ## CPC - A61M 5/2033: {Spring-loaded one-shot injectors with or without automatic needle insertion (multishot dosing syringes A61M5/31525, needle insertion only A61M5/3287)} - A61M 5/31553: {without axial movement of dose setting member} - A61M 5/3204: {Needle cap removers, i.e. devices to dislodge protection cover from needle or needle hub, e.g. deshielding devices} - A61M 5/206: {with automatic needle insertion} - A61M 5/3146: {Priming, e.g. purging, reducing backlash or clearance} - A61M 5/3156: {using volume steps only adjustable in discrete intervals, i.e. individually distinct intervals} - A61M 5/3157: {Means providing feedback signals when administration is completed (A61M5/20 takes precedence)} - A61M 5/31585: {the component being manually operated or triggered by an axially moving actuator operated by user, e.g. an axially movable injection button} - A61M 5/3257: {Semi-automatic sleeve extension, i.e. in which triggering of the sleeve extension requires a deliberate action by the user, e.g. manual release of spring-biased extension means} - A61M 5/3287: {Accessories for bringing the needle into the body; Automatic needle insertion (A61M5/20, A61M5/31525 take precedence)} - A61M 2005/2073: {preventing premature release, e.g. by making use of a safety lock} - A61M 2005/208: {Release is possible only when device is pushed against the skin, e.g. using a trigger which is blocked or inactive when the device is not pushed against the skin} - A61M 2205/582: by tactile feedback - A61M 2205/583: by visual feedback - 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 device for delivery of a medicament from a container (10) having an outlet (16) at a distal end of the container (10) and a stopper (22) for containing the medicament in the container (10). The device comprises a housing (110, 140), a drive element (300) arranged to move in the distal direction to cooperate with the container (10), a drive mechanism comprising a trigger component (200), the drive mechanism being arranged to hold the drive element (300) in a starting position and to move the drive element (300) in the distal direction from the starting position upon displacement of the trigger component (200) from a working position to a firing position, an interlock component (250) received in the housing (110, 140) and arranged for movement with respect to the housing (110, 140) from a first position to a second position, and at least one flexible locking member (214) arranged to cooperate with a stop face (160) associated with the housing (110, 140) to prevent displacement of the trigger component (200) to the firing position when the interlock component (250) is in the first position. Movement of the interlock component (250) towards the second position causes bending of the flexible locking member (214) away from the stop face (160) to allow displacement of the trigger component (200) to the firing position. ## Claims ### Claim 1 A device for delivery of a medicament from a container having an outlet at a distal end of the container and a stopper for containing the medicament in the container, the device comprising: a housing; a plunger arranged to move in a distal direction to cooperate with the container; a drive mechanism comprising a trigger button, the drive mechanism being arranged to hold the plunger in a starting position and to move the plunger in the distal direction from the starting position upon displacement of the trigger button from a working position to a firing position; an interlock component received in the housing and arranged for movement with respect to the housing from a first position to a second position; and at least one flexible locking member arranged to cooperate with a stop face associated with the housing to prevent displacement of the trigger button to the firing position when the interlock component is in the first position, wherein the at least one flexible locking member is located on the trigger button, wherein the interlock component is not in contact with the at least one flexible locking member in the first position, wherein the interlock component is arranged to contact the at least one flexible locking member upon movement of the interlock component towards the second position, and wherein movement of the interlock component towards the second position causes bending of the flexible locking member away from the stop face to allow displacement of the trigger button to the firing position. ### Claim 2 (depends on 1) The device according to claim 1, wherein the flexible locking member is arranged to abut the stop face when the interlock component is in the first position, and wherein bending of the flexible locking member upon movement of the interlock component towards the second position causes the flexible locking member to move clear of the stop face. ### Claim 3 (depends on 1) The device according to claim 1, wherein the stop face prevents distal movement of the flexible locking member when the interlock component is in the first position. ### Claim 4 (depends on 1) The device according to claim 1, wherein a proximal part of the interlock component contacts the flexible locking member upon movement of the interlock component towards the second position. ### Claim 5 (depends on 1) The device according to claim 1, wherein the flexible locking member is associated with the interlock component, and comprises a blocking face arranged to block distal movement of the trigger button when the flexible locking member cooperates with the stop face. ### Claim 6 (depends on 1) The device according to claim 1, comprising a guide formation arranged to cooperate with the flexible locking member to cause further bending of the flexible locking member upon movement of the trigger button to the firing position. ### Claim 7 (depends on 6) The device according to claim 6, wherein the guide formation is associated with the housing. ### Claim 8 (depends on 1) The device according to claim 1, wherein a firing mechanism comprises a latching arrangement for latching the plunger in the starting position, and wherein the trigger button comprises a latch release member for releasing the latching arrangement upon movement of the trigger button to the fired position. ### Claim 9 (depends on 8) The device according to claim 8, wherein the interlock component cooperates with the latching arrangement to block the release of the latching arrangement when the interlock component is in the first position. ### Claim 10 (depends on 8) The device according to claim 8, wherein the latching arrangement comprises at least one latching arm associated with the plunger, wherein the latching arm is arranged to engage with the housing to latch the plunger in the starting position and the latch release member is arranged to disengage the latching arm from the housing upon movement of the trigger button to the firing position, and wherein the interlock component cooperates with the latching arm to prevent disengagement of the latching arm from the housing when the interlock component is in its first position, and the interlock component moves to release the latching arm upon movement of the interlock component towards its second position. ### Claim 11 (depends on 1) The device according to claim 1, comprising a securing mechanism for securing the interlock component in the first position, wherein the securing mechanism is releasable upon movement of an operating member of the device to allow movement of the interlock component to the second position. ### Claim 12 (depends on 11) The device according to claim 11, wherein movement of the operating member causes turning movement of the interlock component relative to the housing thereby to release the securing mechanism. ### Claim 13 (depends on 11) The device according to claim 11, wherein the operating member comprises a dose selector of the device, and wherein the securing mechanism releases the interlock component when a non-zero dose is selected. ### Claim 14 (depends on 11) The device according to claim 11, wherein the securing mechanism comprises a securing formation positioned for engagement with a stop formation to prevent movement of the interlock component out of the first position and movable out of engagement with the stop formation to release the securing mechanism upon movement of the operating member. ### Claim 15 (depends on 1) The device according to claim 1, wherein movement of the interlock component towards the second position causes axial movement of the flexible locking member relative to the housing. ### Claim 16 (depends on 15) The device according to claim 15, comprising a ramp formation arranged to cooperate with a control formation to bend the flexible locking member upon axial movement of the flexible locking member relative to the housing. ### Claim 17 (depends on 16) The device according to claim 16, wherein the ramp formation is disposed on the flexible locking member and wherein the control formation is associated with the housing. ### Claim 18 (depends on 16) The device according to claim 16, wherein the flexible locking member comprises a guide surface disposed on a distal side of the ramp formation, the guide surface being arranged to cooperate with the control formation upon further axial movement of the flexible locking member relative to the housing. ### Claim 19 (depends on 1) The device according to claim 1, wherein movement of the interlock component towards the second position causes movement of the trigger button relative to the housing from a stowed position to the working position. ### Claim 20 (depends on 19) The device according to claim 19, wherein the working position is proximal to the stowed position and a trigger position. ### Claim 21 (depends on 1) The device according to claim 1, wherein the interlock component is arranged for axial movement with respect to the housing. ### Claim 22 (depends on 21) The device according to claim 21, wherein a distal part of the interlock component protrudes from a distal end of the housing when the interlock component is in the first position, and wherein the second position is disposed proximally with respect to the first position. ### Claim 23 An injection device for delivery of a medicament from a container having an outlet at a distal end of the container and a stopper for containing the medicament in the container, the device comprising: a housing for receiving the container; a drive mechanism arranged to move a drive element in a distal direction to cooperate with the container upon operation of the drive mechanism; an interlock component received in the housing and arranged for movement with respect to the housing from a first position to a second position to switch the drive mechanism from a locked state to an operating state; and a securing mechanism for securing the interlock component in the first position, wherein the securing mechanism is releasable upon movement of an operating member of the device to allow movement of the interlock component to the second position, wherein movement of the operating member causes turning movement of the interlock component relative to the housing thereby to release the securing mechanism. ### Claim 24 (depends on 23) The injection device according to claim 23, wherein the operating member comprises a dose selector of the device, and wherein the securing mechanism releases the interlock component when a non-zero dose is selected. ### Claim 25 (depends on 23) The injection device according to claim 23, wherein the securing mechanism comprises a securing formation positioned for engagement with a stop formation to prevent movement of the interlock component out of the first position and movable out of engagement with the stop formation to release the securing mechanism upon movement of the operating member. ### Claim 26 A device for delivery of a medicament from a container having an outlet at a distal end of the container and a stopper for containing the medicament in the container, the device comprising: a housing; a plunger arranged to move in a distal direction to cooperate with the container; a drive mechanism comprising a trigger button, the drive mechanism being arranged to hold the plunger in a starting position and to move the plunger in the distal direction from the starting position upon displacement of the trigger button from a working position to a firing position; an interlock component received in the housing and arranged for movement with respect to the housing from a first position to a second position; and at least one flexible locking member arranged to cooperate with a stop face associated with the housing to prevent displacement of the trigger button to the firing position when the interlock component is in the first position, wherein the at least one flexible locking member is located on the interlock component and comprises a blocking face arranged to block distal movement of the trigger button when the flexible locking member cooperates with the stop face, wherein movement of the interlock component towards the second position causes bending of the flexible locking member away from the stop face to allow displacement of the trigger button to the firing position, and wherein the at least one flexible locking member further comprises a proximal end face abutting the trigger button to block distal movement of the trigger button when the flexible locking member cooperates with the proximal end face.