# US 2014/0155820 A1 · Medicament Delivery Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0155820 A1 - Document ID: US20140155820A1 - Status: Published application - Kind: A1 - Application number: 13/819,542 - Filed: 2011-08-23 - Published: 2014-06-05 - Earliest claimed: 2010-08-31 - Assignees: SHL Group AB - Inventors: Anders Holmqvist; Sebastian Karlsson - Web page: https://patentgrep.com/patent/US20140155820A1 ## CPC - A61M 5/31571: {Means preventing accidental administration (for automatic syringes A61M5/20)} - 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 5/2066: {comprising means for injection of two or more media, e.g. by mixing} - A61M 5/2448: {comprising means for injection of two or more media, e.g. by mixing} - A61M 5/3146: {Priming, e.g. purging, reducing backlash or clearance} - A61M 5/31596: {comprising means for injection of two or more media, e.g. by mixing} - A61M 5/315: Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod {or piston}; Appliances on the rod for facilitating dosing {; Dosing mechanisms} - A61M 2005/202: {cocking means, e.g. to bias the main drive spring of an injector} - A61M 2005/2073: {preventing premature release, e.g. by making use of a safety lock} - 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 medicament delivery device includes a housing having a proximal housing part and a distal housing part movable relative each other, a drive force mechanism accommodated in the distal housing part, a container filled with medicament arranged within the proximal housing part, a holding member for holding the drive force mechanism in a loaded state, and an actuation member arranged to interact with the holding member for releasing the drive force mechanism from its loaded state. The holding member is arranged to be moved from a disengaged position, in which the holding member is disengaged from the actuation member, to an engaged position, in which the holding member is engaged to the actuation member by moving the housing parts in relation to each other. ## Claims ### Claim at position 1 -12. (canceled) ### Claim 13 A medicament delivery device, comprising: a housing, comprising a proximal housing part and a distal housing part movable relative each other; a drive force mechanism accommodated in the distal housing part and comprising a counter-connecting device; a container filled with medicament within the proximal housing part; a holding member operably connected to the drive force mechanism for holding the drive force mechanism in a loaded state, wherein the holding member comprises a connecting device and an engagement device; and an actuation member arranged to interact with the holding member for releasing the drive force mechanism from its loaded state, wherein the actuation member comprises a counter-engagement device; wherein the holding member is arranged to be moved by the proximal housing part when the proximal and distal housing parts are moved toward each other from a disengaged position, in which the holding member is disengaged from the actuation member, to an engaged position, in which the holding member is engaged to the actuation member, such that the engagement device and the counter-engagement device interact for engaging the connecting device to the counter-connecting device. ### Claim 14 (depends on 13) The medicament delivery device of claim 13, wherein the proximal housing part comprises a co-acting device and the holding member comprises a counter-co-acting device that interact together for moving the holding member from the disengaged position to the engaged position. ### Claim 15 (depends on 13) The medicament delivery device of claim 13, wherein the actuation member comprises a touchable part that protrudes from the distal housing part, and the actuation member is resiliently arranged to the distal housing part such that the actuation member in the disengaged position of the holding member is movable relative to the distal housing part without acting on the drive force mechanism. ### Claim 16 (depends on 13) The medicament delivery device of claim 13, wherein the drive force mechanism comprises a plunger rod, a drive force spring, and a drive member. ### Claim 17 (depends on 16) The medicament delivery device of claim 16, wherein the drive member comprises a releasable device and the plunger rod comprises a counter-releasable device that interact together for releasably engaging the plunger rod to the drive member. ### Claim 18 (depends on 17) The medicament delivery device of claim 17, wherein the releasable device includes radially flexing arms provided with inwardly extending ledges, the counter-releasable device includes a groove on its circumferential outer surface, the inwardly extending ledges fit into the groove, and the holding member completely surrounds the radially flexing arms when the holding member is in the disengaged position. ### Claim 19 (depends on 14) The medicament delivery device of claim 14, wherein the co-acting device includes a distal-end annular surface of the proximal housing part, and the counter co-acting device includes an annular ledge on an outer circumference of the holding member. ### Claim 20 (depends on 13) The medicament delivery device of claim 13, wherein the engagement device includes distally extending tongues and the counter-engagement device includes proximally extending flexible tongues. ### Claim 21 (depends on 13) The medicament delivery device of claim 13, wherein the connecting device includes radial inwardly extending protrusions on the proximally extending flexible tongues of the actuation member, and the counter-connecting device includes recesses on a distal outer surface of the drive member, such that the recesses are configured to receive the radial inwardly extending protrusions. ### Claim 22 (depends on 18) The medicament delivery device of the claim 18, wherein the holding member is moved by the proximal housing part from the disengaged position to the engaged position, in which the holding member partially surrounds the radially flexing arms and is engaged to the actuation member. ### Claim 23 (depends on 13) The medicament delivery device of claim 13, wherein the container is a multi-chamber medicament container, and materials in the multi-chamber are mixed by moving the proximal and distal housing parts toward each other. ### Claim 24 (depends on 23) The medicament delivery device of claim 23, wherein the engaged position of the holding member corresponds to a position of the multi-chamber in which the materials are mixed.