# US 10,441,726 B2 · Needle shield with specific roughness > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,441,726 B2 - Document ID: US10441726B2 - Status: Granted - Kind: B2 - Application number: 14/604,911 - Filed: 2015-01-26 - Published: 2015-07-23 - Granted: 2019-10-15 - Earliest claimed: 2015-01-26 - Assignees: Becton Dickinson France - Applicants: Becton Dickinson France - Inventors: Jean-Claude Thibault; Julien Bernard - Web page: https://patentgrep.com/patent/US10441726B2 ## CPC - A61M 5/3202: {Devices for protection of the needle before use, e.g. caps (A61M5/50 takes precedence; protectors for sharps A61B50/3001)} - 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 The present invention relates to a shield (10) for the distal extremity of an administration device (3) comprising a hub (2) on which said shield (10) is to be removably engaged, said shield (10) having a wall (13) the internal face (14) of which defining an interior cavity (15) for receiving the extremity of the administration device (3), at least a portion (14a) of said internal face (14) being intended to be in contact with said hub (2) when said shield (10) is engaged on the extremity of said administration device (3), whereby said portion (14a) has, distributed over a major portion of said portion (14a), a surface feature (16, 17) that defines the amount of contact between said portion (14a) and said hub (2). ## Claims ### Claim 1 An administration device, comprising: a shield for covering at least part of a distal extremity of the administration device, and a hub on which the shield may be removably engaged, wherein the hub is configured to be received within the shield, wherein the shield comprises: an open proximal end, a closed distal end, and a longitudinal wall formed of an elastomeric material extending from the proximal end to the distal end, an internal face of the longitudinal wall defining an interior cavity for receiving at least a portion of the distal extremity of the administration device therein, the internal face defining a securement portion which contacts the hub when the shield is secured on the administration device, wherein the hub is received in the shield such that an outer surface of the hub contacts the securement portion defined on the internal face of the shield, and wherein the securement portion has distributed thereover a surface feature that defines a contact ratio between the securement portion and the hub of less than 90%, when the shield is secured on the hub. ### Claim 2 (depends on 1) The administration device according to claim 1, wherein the contact ratio between the securement portion and the hub is less than 80%, when the shield is secured on the hub. ### Claim 3 (depends on 1) The administration device according to claim 1, wherein the contact ratio between the securement portion and the hub is more than 10%, when the shield is secured on the hub. ### Claim 4 (depends on 1) The administration device according to claim 1, wherein the contact ratio between the securement portion and the hub is more than 20%, when the shield is secured on the hub. ### Claim 5 (depends on 1) The administration device according to claim 1, wherein the surface feature is distributed about a circumference of the securement portion. ### Claim 6 (depends on 1) The administration device according to claim 1, wherein the surface feature is a plurality of microreliefs defining the contact ratio. ### Claim 7 (depends on 6) The administration device according to claim 6, wherein the plurality of microreliefs are distributed about a circumference of the securement portion. ### Claim 8 (depends on 7) The administration device according to claim 7, wherein the microreliefs are distributed regularly about the circumference of the securement portion. ### Claim 9 (depends on 7) The administration device according to claim 7, wherein the microreliefs are distributed randomly about the circumference of the securement portion. ### Claim 10 (depends on 1) The administration device according to claim 1, wherein, with the shield secured to the hub, air may pass through the surface feature from a space external to the shield into the interior cavity. ### Claim 11 (depends on 1) The administration device according to claim 1, wherein the shield defines a longitudinal axis and the surface feature comprises a plurality of grooves that are inclined with respect to the longitudinal axis. ### Claim 12 (depends on 11) The administration device according to claim 11, wherein the plurality of grooves are distributed regularly about a circumference of the securement portion. ### Claim 13 (depends on 11) The administration device according to claim 11, wherein the plurality of grooves are distributed randomly about a circumference of the securement portion. ### Claim 14 (depends on 11) The administration device according to claim 11, wherein, with the shield secured to the hub, air may pass through the plurality of grooves from a space external to the shield into the interior cavity. ### Claim 15 (depends on 1) The administration device according to claim 1, wherein the surface feature defines a plurality of bulges extending radially therefrom and distributed about a circumference of the securement portion. ### Claim 16 (depends on 15) The administration device according to claim 15, wherein the plurality of bulges are distributed regularly about the circumference of the securement portion. ### Claim 17 (depends on 15) The administration device according to claim 15, wherein the plurality of bulges are distributed randomly about the circumference of the securement portion. ### Claim 18 (depends on 1) The administration device according to claim 1, wherein the surface feature defines a plurality of ridges extending radially therefrom and distributed about a circumference of the securement portion. ### Claim 19 (depends on 18) The administration device according to claim 18, wherein the plurality of ridges are distributed regularly about the circumference of the securement portion. ### Claim 20 (depends on 18) The administration device according to claim 18, wherein the plurality of ridges are distributed randomly about the circumference of the securement portion.