# US 11,305,069 B2 · Safety device for a medicament container > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,305,069 B2 - Document ID: US11305069B2 - Status: Granted - Kind: B2 - Application number: 16/446,755 - Filed: 2019-06-20 - Published: 2019-10-03 - Granted: 2022-04-19 - Earliest claimed: 2013-08-29 - Assignees: Sanofi - Applicants: Sanofi - Inventors: David Darras; Fabien Canepa; Bruno Serre; Jacky Mazzolini - Web page: https://patentgrep.com/patent/US11305069B2 ## CPC - A61M 5/3204: {Needle cap removers, i.e. devices to dislodge protection cover from needle or needle hub, e.g. deshielding devices} - A61M 5/3243: {being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel (devices for protecting guide needles in combination with catheters A61M25/0612)} - A61M 5/3137: {with finger grip means, e.g. for easy manipulation of the syringe rod} - 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 5/3202: {Devices for protection of the needle before use, e.g. caps (A61M5/50 takes precedence; protectors for sharps A61B50/3001)} - A61M 2005/3139: {Finger grips not integrally formed with the syringe barrel, e.g. using adapter with finger grips} - A61M 2005/3247: {Means to impede repositioning of protection sleeve from needle covering to needle uncovering position} - A61M 2005/3261: {triggered by radial deflection of the anchoring parts between sleeve and syringe barrel, e.g. spreading of sleeve retaining hooks having slanted surfaces by engagement with conically shaped collet of the piston rod during the last portion of the injection stroke of the plunger} - A61M 2005/3264: {Trigger provided at the proximal end, i.e. syringe end opposite to needle mounting end} - A61M 2205/586: Ergonomic details therefor, e.g. specific ergonomics for left or right-handed users - 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 safety device for a medicament container includes a first sheath having a first ledge and a second ledge, a second sheath telescopically arranged with the first sheath and releasably coupled to the first ledge, and a finger flange having at least one resilient clip adapted to engage the second ledge first sheath. ## Claims ### Claim 1 A safety device for a medicament container, the safety device comprising: a first sheath comprising a first ledge and a second ledge; a second sheath telescopically arranged with the first sheath and releasably coupled to the first ledge; and a finger flange comprising: a resilient clip adapted to engage the second ledge of the first sheath, a central portion comprising a substantially flat proximal surface and a distal surface that is concave or substantially flat, and a support portion extending radially from the central portion; wherein the resilient clip comprises a transverse beam extending in a radial inward direction and a longitudinal beam extending from the transverse beam in a proximal direction, and wherein the transverse beam comprises a hinge in the shape of a section with a reduced thickness compared to a remaining portion of the transverse beam. ### Claim 2 (depends on 1) The safety device of claim 1, wherein the resilient clip comprises: a hook comprising a slope surface and a block surface extending from the longitudinal beam in the radial inward direction, wherein during insertion of the second ledge in a distal direction, the second ledge engages the slope surface and increasingly deflects the resilient clip in a radial outward direction, and wherein after the second ledge has passed the slope surface, the resilient clip relaxes and the second ledge engages the block surface to prevent the second ledge from returning in the proximal direction. ### Claim 3 (depends on 1) The safety device of claim 1, wherein the hinge has a thickness of approximately 30% to 70% of a thickness of the remaining portion of the transverse beam. ### Claim 4 (depends on 1) The safety device of claim 1, wherein a protrusion is arranged on one of the finger flange and the first sheath, and wherein the protrusion is arranged to engage a recess in the other one of the finger flange and the first sheath so as to limit relative rotation between the first sheath and the finger flange. ### Claim 5 (depends on 1) The safety device of claim 1, wherein the finger flange comprises: a hole adapted to receive the first sheath; and a central recess disposed adjacent to the hole adapted to receive the second ledge. ### Claim 6 (depends on 1) The safety device of claim 1, wherein the finger flange comprises a retaining wall adapted to abut the second ledge. ### Claim 7 (depends on 6) The safety device of claim 6, wherein the retaining wall abuts an entire periphery of the second ledge. ### Claim 8 (depends on 1) The safety device of claim 1, wherein the finger flange comprises: a hole adapted to receive the first sheath; and a lateral recess disposed adjacent the hole. ### Claim 9 (depends on 1) The safety device of claim 1, wherein the support portion comprises a support surface, wherein the support surface is made of a first material, wherein the support portion is made of a second material, and wherein the first material has a lower durometer than the second material. ### Claim 10 (depends on 9) The safety device of claim 9, wherein the support surface comprises one or more frictional features. ### Claim 11 (depends on 10) The safety device of claim 10, wherein the support surface is formed by overmolding or by two-shot injection molding. ### Claim 12 (depends on 1) The safety device of claim 1, wherein the finger flange comprises a hole adapted to receive the first sheath, and wherein a radial distance between an outer radial surface and an outer diameter of the hole is approximately 20 mm. ### Claim 13 (depends on 1) The safety device of claim 1, wherein the support portion comprises a substantially flat proximal surface and a concave distal surface or a concave proximal surface and a concave distal surface. ### Claim 14 A medicament delivery device, comprising: a medicament container; and a safety device for the medicament container, the safety device comprising: a first sheath comprising a first ledge and a second ledge, a second sheath telescopically arranged with the first sheath and releasably coupled to the first ledge, and a finger flange comprising: a resilient clip adapted to engage the second ledge of the first sheath, a central portion comprising a substantially flat proximal surface and a distal surface that is concave or substantially flat, and a support portion extending radially from the central portion, wherein the resilient clip comprises a transverse beam extending in a radial inward direction and a longitudinal beam extending from the transverse beam in a proximal direction, and wherein the transverse beam comprises a hinge in the shape of a section with a reduced thickness compared to a remaining portion of the transverse beam. ### Claim 15 A safety device for a medicament container, the safety device comprising: a first sheath comprising a first ledge and a second ledge; a second sheath telescopically arranged with the first sheath and releasably coupled to the first ledge; a finger flange comprising a resilient clip adapted to engage the second ledge of the first sheath; and a cap comprising a cylindrical portion having a first outer diameter and a disc portion having a second outer diameter larger than the first outer diameter, wherein the resilient clip comprises a transverse beam extending in a radial inward direction and a longitudinal beam extending from the transverse beam in a proximal direction, and wherein the transverse beam comprises a hinge in the shape of a section with a reduced thickness compared to a remaining portion of the transverse beam. ### Claim 16 (depends on 15) The safety device of claim 15, wherein the cylindrical portion comprises a through hole adapted to accommodate a needle shield.