# US 2019/0167913 A1 · Pen needle magazine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0167913 A1 - Document ID: US20190167913A1 - Status: Published application - Kind: A1 - Application number: 16/094,382 - Filed: 2017-03-31 - Published: 2019-06-06 - Earliest claimed: 2016-04-28 - Assignees: Becton, Dickinson and Company - Applicants: Becton, Dickinson and Company - Inventors: Sudarsan Srinivasan; Cole Constantineau; Michel Bruehwiler; Tyson Montidoro; Jeffrey Chagnon - Web page: https://patentgrep.com/patent/US20190167913A1 ## CPC - A61M 5/345: {Adaptors positioned between needle hub and syringe nozzle} - A61B 5/15: Devices for taking samples of blood - A61M 5/00: Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm rests (tube connectors, tube couplings, valves or branch units, specially adapted for medical use A61M39/00; containers specially adapted for medical or pharmaceutical purposes A61J1/00) - A61M 5/002: {Packages specially adapted therefor, e.g. packages for syringes or needles or kits for diabetics} - A61M 5/24: Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or cartridges, e.g. automatic - A61M 5/31: Details - A61M 5/32: Needles; Details of needles pertaining to their connection with syringe or hub (infusion needles A61M5/158); Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles - A61M 5/2466: {by piercing without internal pressure increase (A61M5/2429 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 2005/004: {Magazines with multiple needles directly inserted into an injection or infusion device, e.g. revolver-like magazines} - 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)} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract An attachable needle assembly (2) for use on a medication delivery pen (4), the needle assembly (2) comprising a spike housing (8) that is configured to engage the medication delivery pen (4) and pierce a reservoir septum (6) of the medication delivery pen (4), a needle assembly housing (22) secured to the spike housing (8), the needle assembly housing (22) enclosing a septum (40) with a cavity (42) that is in continuous fluid communication with the spike housing (8), and a plurality of needles (44) configured to pierce the needle assembly septum (40), wherein when the needle assembly housing (22) is in a first position, the plurality of needles (44) are disengaged from the needle assembly septum (40), and when the needle assembly housing (22) is in a second position, one of the plurality of needles (46) enters into fluid communication with the septum cavity (42) and is exposed for medicament delivery. ## Claims ### Claim 1 An attachable needle assembly for use on a medication delivery pen, the needle assembly comprising: a spike housing that is configured to engage the medication delivery pen and pierce a reservoir septum of the medication delivery pen; a needle assembly housing secured to the spike housing, the needle assembly housing enclosing: a needle assembly septum having a septum cavity, the septum cavity being in continuous fluid communication with the spike housing; and a plurality of needles configured to pierce the needle assembly septum, wherein when the needle assembly housing is in a first position, the plurality of needles are disengaged from the needle assembly septum, and when the needle assembly housing is in a second position, one of the plurality of needles enters into fluid communication with the septum cavity and is exposed for medicament delivery. ### Claim 2 (depends on 1) The attachable needle assembly of claim 1, further comprising a spring applying a compression force to the needle assembly septum, wherein when the needle assembly housing is released from the second position, the spring returns the needle assembly housing to the first position. ### Claim 3 (depends on 2) The attachable needle assembly of claim 2, further comprising a needle retriever including a flange, the needle retriever enclosing the plurality of needles, wherein the spring causes the flange to contact the needle assembly housing in the first position to maintain constant compression of the spring. ### Claim 4 (depends on 1) The attachable needle assembly of claim 1, further comprising a rotating ratchet that houses the needle assembly septum of the needle assembly, the rotating ratchet includes a follower being an angled surface; and a main housing disposed in the needle assembly housing, the main housing includes a first curvilinear path, wherein the follower travels along the first curvilinear path to rotate the rotating ratchet as the needle assembly housing is moved between the first position and the second position so that a different needle of the plurality of needles pierces the septum cavity each time the needle assembly housing is in the second position. ### Claim 5 (depends on 4) The attachable needle assembly of claim 4, wherein the needle assembly housing moves axially relative to the main housing. ### Claim 6 (depends on 4) The attachable needle assembly of claim 4, wherein the needle assembly housing includes a second curvilinear path that cooperates with the first curvilinear path and guides the follower of the rotating ratchet to rotate. ### Claim 7 (depends on 1) The attachable needle assembly of claim 1, wherein when the needle assembly housing is in the second position, a remainder of the plurality of needles enters into a hollow opening in a rotating ratchet. ### Claim 8 (depends on 1) The attachable needle assembly of claim 1, wherein when the one needle of the plurality of needles returns from the second position to the first position, the one needle of the plurality of needles is unable to be reused. ### Claim 9 (depends on 1) The attachable needle assembly of claim 1, further comprising a plurality of needle posts that each secures one of the plurality of needles; and a needle housing that stores each of the plurality of needle posts, wherein the plurality of needle posts is engaged to the needle housing in the first and second positions of the needle assembly housing. ### Claim 10 (depends on 1) The attachable needle assembly of claim 1, wherein each needle of the plurality of needles is secured in a respective needle post, and when the needle assembly housing moves from the first position to the second position, the needle post of the one needle moves from a top position to a bottom position in a needle housing to expose the needle for medicament delivery. ### Claim 11 (depends on 10) The attachable needle assembly of claim 10, wherein when the needle assembly housing moves from the first position to the second position, remaining needles of the plurality of needles extend further into a hollow opening of a rotating ratchet. ### Claim 12 (depends on 1) The attachable needle assembly of claim 1, wherein a proximal end of the plurality of needles is each enclosed by a first sterility boot when the needle assembly housing is in the first position, wherein when the needle assembly housing is in the second position, the first sterility boot of the one needle of the plurality of needles is pierced to establish fluid communication between the one needle and the septum cavity of the needle assembly septum. ### Claim 13 (depends on 1) The attachable needle assembly of claim 1, wherein a distal end of the plurality of needles is each enclosed by a second sterility boot when the needle assembly housing is in the first position, wherein when the needle assembly housing is in the second position, the second sterility boot of the one needle of the plurality of needles is pierced to expose the one needle for medicament delivery. ### Claim 14 (depends on 13) The attachable needle assembly of claim 13, wherein the second sterility boot lies at a bottom interior surface of a needle housing. ### Claim 15 (depends on 1) The attachable needle assembly of claim 1, wherein the plurality of needles do not pierce the reservoir septum of the medication delivery pen. ### Claim 16 (depends on 1) The attachable needle assembly of claim 1, wherein the plurality of needles does not substantially rotate or substantially move radially. ### Claim 17 (depends on 1) The attachable needle assembly of claim 1, wherein the plurality of needles includes eight needles. ### Claim 18 (depends on 1) The attachable needle assembly of claim 1, wherein the needle assembly housing moves from the first position to the second position by traveling away from the medication delivery pen. ### Claim 19 (depends on 1) The attachable needle assembly of claim 1, further including a cover enclosing the needle assembly; and a label sealing the needle assembly in the cover and maintaining sterility prior to operating with the medication delivery pen. ### Claim 20 A method of operating an attachable needle assembly on a medication delivery pen, the method comprising: securing the medication delivery pen to a spike housing; piercing a reservoir septum of the medication delivery pen by the spike housing, the spike housing secured by a needle assembly housing; and establishing fluid communication between a septum cavity of a needle assembly septum and the spike housing, wherein when the needle assembly housing is in a first position, the plurality of needles are disengaged from the needle assembly septum and when the needle assembly housing is in a second position, one of the plurality of needles enters into fluid communication with the septum cavity and is exposed for medicament delivery.