# US 2013/0158487 A1 · Safety intravenous needle set > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0158487 A1 - Document ID: US20130158487A1 - Status: Published application - Kind: A1 - Application number: 13/693,168 - Filed: 2012-12-04 - Published: 2013-06-20 - Earliest claimed: 2011-12-20 - Assignees: Sunwell Global Limited - Inventors: ZHI-YUN LI - Web page: https://patentgrep.com/patent/US20130158487A1 ## CPC - A61M 5/321: {Means for protection against accidental injuries by used needles} - A61M 5/158: Needles {for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body} - A61M 5/3216: {Caps placed transversally onto the needle, e.g. pivotally attached to the needle base} - A61M 25/0631: {having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle} - A61M 25/0637: {Butterfly or winged devices, e.g. for facilitating handling or for attachment to the skin} - A61M 2005/1586: {Holding accessories for holding infusion needles on the body} - A61M 2005/3217: {Means to impede repositioning of protection cap from needle covering to needle uncovering position, e.g. catch mechanisms} - 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 intravenous needle set includes needle hub holding a needle and an infusion tube at two opposite ends thereof, and a safety device, which includes a base block affixed to the needle hub, a recessed guard pivoted to the base block and having a retaining lug located on one of two opposing inner wall thereof. The recessed guard is biasable relative to the needle hub toward the medical needle to let the medical needle be forced over the retaining lug into the inside of the recessed guard and then retaining inside the recessed guard by the retaining lug, avoiding accidental needle stick injury after the service of the safety intravenous needle set. ## Claims ### Claim 1 A safety intravenous needle set, comprising: a needle hub holding a medical needle at one end thereof and an infusion tube at an opposite end thereof; and a safety device, said safety device comprising a base block, a recessed guard and a pivot, said recessed guard comprises two opposing inner walls, an outer wall and at least one pair of retaining lugs located on said two opposing inner walls, each said pair of retaining lugs defining therebetween a constraint gap, said base block being fixedly mounted at said needle hub, said recessed guard being pivotally connected to said base block by said pivot for allowing said recessed guard to be biased relative to said base block and said needle hub toward said medical needle to let said medical needle be forced through said constraint gap into the inside of said recessed guard. ### Claim 2 (depends on 1) The safety intravenous needle set as claimed in claim 1, wherein said recessed guard has a relatively wider top side and a relatively narrower bottom side so that said outer wall defines a bevel face at each of two opposite lateral sides thereof. ### Claim 3 (depends on 1) The safety intravenous needle set as claimed in claim 1, wherein said recessed guard comprises an anti-slip structure located on said outer wall. ### Claim 4 (depends on 3) The safety intravenous needle set as claimed in claim 3, wherein said anti-slip structure comprises at least one longitudinal rib, at least one transverse rib, at least one raised portion, at least one recessed portion, at least one finger notch and/or at least one finger retaining means. ### Claim 5 (depends on 1) The safety intravenous needle set as claimed in claim 1, wherein said needle hub comprises a wing located on at least one of two opposite lateral sides thereof. ### Claim 6 (depends on 1) The safety intravenous needle set as claimed in claim 1, wherein each said retaining lug is configured to provide a bevel face, or in the shape of a planar thin sheet member. ### Claim 7 (depends on 1) The safety intravenous needle set as claimed in claim 1, wherein said retaining lugs of said safety device are arranged in a staggered manner, defining a longitudinal pitch between each two adjacent said retaining lugs. ### Claim 8 (depends on 1) The safety intravenous needle set as claimed in claim 1, wherein said constraint gap has a width equal to or smaller than the diameter of said medical needle. ### Claim 9 (depends on 1) The safety intravenous needle set as claimed in claim 1, wherein the other end of said infusion tube is connected to a connector. ### Claim 10 (depends on 9) The safety intravenous needle set as claimed in claim 9, wherein the connector is provided with a transfixion needle connected to the infusion tube, wherein the length of the connector is longer than the length of the transfixion needle. ### Claim 11 A safety intravenous needle set, comprising: a needle hub holding a medical needle at one end thereof and an infusion tube at an opposite end thereof; and a safety device, said safety device comprising a base block, a recessed guard and a pivot, said recessed guard comprises two opposing inner walls, an outer wall and at least one retaining lug located on one said inner wall, said base block being fixedly mounted at said needle hub, said recessed guard being pivotally connected to said base block by said pivot for allowing said recessed guard to be biased relative to said base block and said needle hub toward said medical needle to let said medical needle be forced over said at least one retaining lug into the inside of said recessed guard and then retaining inside said recessed guard by said at least one retaining lug. ### Claim 12 (depends on 11) The safety intravenous needle set as claimed in claim 11, wherein said recessed guard has a relatively wider top side and a relatively narrower bottom side so that said outer wall defines a bevel face at each of two opposite lateral sides thereof. ### Claim 13 (depends on 11) The safety intravenous needle set as claimed in claim 11, wherein said recessed guard comprises an anti-slip structure located on said outer wall. ### Claim 14 (depends on 13) The safety intravenous needle set as claimed in claim 13, wherein said anti-slip structure comprises at least one longitudinal rib, at least one transverse rib, at least one raised portion, at least one recessed portion, at least one finger notch and/or at least one finger retaining means. ### Claim 15 (depends on 11) The safety intravenous needle set as claimed in claim 11, wherein said needle hub comprises a wing located on at least one of two opposite lateral sides thereof. ### Claim 16 (depends on 11) The safety intravenous needle set as claimed in claim 11, wherein each said retaining lug is configured to provide a bevel face, or in the shape of a planar thin sheet member. ### Claim 17 (depends on 11) The safety intravenous needle set as claimed in claim 11, wherein each said retaining lug has a length greater than one half of the internal width of said recessed guard. ### Claim 18 (depends on 11) The safety intravenous needle set as claimed in claim 11, wherein the other end of said infusion tube is connected to a connector. ### Claim 19 (depends on 18) The safety intravenous needle set as claimed in claim 18, wherein the connector is provided with a transfixion needle connected to the infusion tube, wherein the length of the connector is longer than the length of the transfixion needle.