# US 10,307,539 B2 · 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 10,307,539 B2 - Document ID: US10307539B2 - Status: Granted - Kind: B2 - Application number: 15/286,874 - Filed: 2016-10-06 - Published: 2017-01-26 - Granted: 2019-06-04 - Earliest claimed: 2009-10-08 - Assignees: Shl Medical AG - Applicants: SHL Group AB - Inventors: Oscar Alexandersson - Web page: https://patentgrep.com/patent/US10307539B2 ## CPC - A61M 5/20: Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically (A61M5/142 takes precedence) - 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 5/3157: {Means providing feedback signals when administration is completed (A61M5/20 takes precedence)} - A61M 5/3202: {Devices for protection of the needle before use, e.g. caps (A61M5/50 takes precedence; protectors for sharps A61B50/3001)} - A61M 5/326: {Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user} - A61M 5/206: {with automatic needle insertion} - A61M 2005/2013: {triggering of discharging means by contact of injector with patient body} - A61M 2005/2026: {Semi-automatic, e.g. user activated piston is assisted by additional source of energy} - A61M 2205/581: by audible feedback - A61M 2205/582: by tactile feedback - A61M 2205/583: by visual feedback - A61M 2205/584: having a color code - 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 generally elongated tubular housing having opposite proximal and distal parts; a needle shield sleeve slidably and coaxially arranged inside the housing with a proximal part of the sleeve protruding a distance outside the proximal part of the housing; a syringe carrier mechanism having a syringe carrier slidably and coaxially arranged within the needle shield sleeve, a syringe having a stopper, a medicament, and a needle, the syringe being coaxially arranged within the syringe carrier; and a holding member connected to the syringe carrier; a first activator member an a second activator member; a drive mechanism adapted to accumulate a drive force for moving the syringe carrier mechanism in a first step and a second step. The second activator member is arranged within an information device for producing audible, visual, and/or tactile feedback to a user about a completed injection. ## Claims ### Claim 1 An injection device, comprising: a tubular housing, a syringe carrier arranged within the tubular housing, the syringe carrier configured to carry a syringe, the syringe comprising a stopper, a medicament, and a needle, a needle shield sleeve slidably arranged with respect to the tubular housing and protruding a distance outside a front end of the tubular housing, a plunger rod arranged to act on the stopper of the syringe, a first compression spring arranged to drive the plunger rod, a first activator member connected to the needle shield sleeve, a second activator member capable of releasably holding the plunger rod, and an information member attached to the second activator member, the information member arranged to provide information indicating that an injection of the medicament contained within the syringe has been completed, wherein the second activator member is capable of releasably holding the first activator member and the needle shield sleeve. ### Claim 2 (depends on 1) The device according to claim 1, wherein the second activator member releasably holds the first activator member and the needle shield sleeve, after the needle shield sleeve and the first activator member have moved distally a certain distance. ### Claim 3 (depends on 2) The device according to claim 2, wherein the second activator member releases the first activator member and the needle shield sleeve, after an injection has taken place. ### Claim 4 (depends on 3) The device according to claim 3, wherein the second activator member releases the first activator member and the needle shield sleeve, after the plunger rod moves the stopper and the medicament is injected after the stopper reaches an inner proximal end of the syringe. ### Claim 5 (depends on 1) The device according to claim 1, further comprising a second compression spring having an annular proximal end resting on the first activator member and an annular distal end resting on a proximal surface of the second activator member. ### Claim 6 (depends on 5) The device according to claim 5, wherein when the needle shield sleeve and the first activator member are moved in a distal direction in relation to the tubular housing, the needle shield sleeve and the first activator member move against a force of the second compression spring which is pre-tensioned. ### Claim 7 (depends on 1) The device according to claim 1, wherein the information member is arranged to provide tactile information that an injection has been completed. ### Claim 8 (depends on 1) The device according to claim 1, wherein the information member is arranged to provide visual information that an injection has been completed. ### Claim 9 (depends on 1) The device according to claim 1, wherein the second activator member is slidably and coaxially arranged with the first activator member. ### Claim 10 (depends on 1) The device according to claim 1, wherein the second activator member further comprises a tubular shape. ### Claim 11 (depends on 10) The device according to claim 10, wherein the second activator member further comprises a plurality of longitudinally directed cut-outs arranged along a proximal outer surface of the tubular shape of the second activator member. ### Claim 12 (depends on 11) The device according to claim 11, wherein the plurality of longitudinally directed cut-outs form a plurality of flexible tongues. ### Claim 13 (depends on 12) The device according to claim 12, wherein a proximal end of each of the plurality of flexible tongues comprises an inclined transition surface. ### Claim 14 (depends on 13) The device according to claim 13, wherein the inclined transition surface meets with a band shaped part with an enlarged diameter. ### Claim 15 (depends on 14) The device according to claim 14, wherein the inclined transition surface is configured to releasably hold the first activator member and the needle shield sleeve after the first activator member and the needle shield sleeve move in a distal direction. ### Claim 16 (depends on 1) The device according to claim 1, wherein the second activator member comprises at least one radially extending inwards directed ledge and that the plunger rod comprises a groove, wherein the at least one radially extending inwards directed ledges is configured to fit into the groove. ### Claim 17 (depends on 16) The device according to claim 16, wherein the at least one radially extending inwards directed ledge is arranged at an end of at least one flexible tongue. ### Claim 18 (depends on 1) The device according to claim 1, wherein the syringe carrier is slidably and coaxially arranged within the needle shield sleeve. ### Claim 19 (depends on 1) The device according to claim 1, wherein the plunger rod defines an inner cavity. ### Claim 20 (depends on 19) The device according to claim 19, wherein the first compression spring is coaxially arranged within the inner cavity of the plunger rod.