# US 2021/0402155 A1 · Medical Component Insertion Device Including a Retractable Needle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0402155 A1 - Document ID: US20210402155A1 - Status: Published application - Kind: A1 - Application number: 17/471,051 - Filed: 2021-09-09 - Published: 2021-12-30 - Earliest claimed: 2011-02-25 - Assignees: C. R. Bard, Inc. - Applicants: C. R. Bard, Inc. - Inventors: John W. Hall; Ryan C. Patterson; Charles L. Farnworth - Web page: https://patentgrep.com/patent/US20210402155A1 ## CPC - A61M 25/0631: {having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle} - A61M 25/0606: {"Over-the-needle" catheter assemblies, e.g. I.V. catheters} - A61M 25/09: Guide wires - A61M 29/00: Dilators with or without means for introducing media, e.g. remedies - A61M 2025/0656: {having a tip larger than the rest of the body} - A61M 2025/0681: {Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube} - A61M 2025/0687: {having means for atraumatic insertion in the body or protection of the tip of the sheath during insertion, e.g. special designs of dilators, needles or sheaths} - 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 medical insertion device includes an introducer assembly, a needle, and a housing. The introducer assembly includes a dilator coaxially disposed in a sheath, the dilator removably engaged to the sheath in an insertion configuration. The needle is coaxially disposed in the dilator, the needle having a distal tip and a proximal end coupled to a needle hub. The housing may be removably engaged to the dilator. The needle hub is movably disposed in the housing between a first locked position, a second locked position, and a third locked position. ## Claims ### Claim 1 A medical insertion device, comprising: an introducer assembly, including a dilator coaxially disposed in a sheath, the dilator removably engaged to the sheath in an insertion configuration; a needle coaxially disposed in the dilator, the needle having a distal tip and a proximal end coupled to a needle hub; a guidewire disposed in the dilator alongside of the needle; and a housing removably engaged to the dilator, the needle hub movably disposed in the housing between a first locked position, a second locked position, and a third locked position, wherein: in the first locked position, the distal tip of the needle extends from a distal end of the dilator and the guidewire is within the dilator; in the second locked position, the distal tip of the needle and the guidewire are within the dilator; and in the third locked position, the distal tip of the needle is within the dilator and the guidewire extends from the distal end of the dilator. ### Claim 2 (depends on 1) The medical insertion device according to claim 1, wherein the dilator includes a dilator hub and the sheath includes a sheath hub, the dilator hub threadably engaged to the sheath hub in the insertion configuration. ### Claim 3 (depends on 2) The medical insertion device according to claim 2, wherein the dilator hub is threadably engaged to the sheath hub in the first, second, and third locked positions. ### Claim 4 (depends on 2) The medical insertion device according to claim 2, wherein the housing is threadably engaged to the dilator hub. ### Claim 5 (depends on 1) The medical insertion device according to claim 1, further comprising a handle coupled to the needle hub through a wall of the housing. ### Claim 6 (depends on 5) The medical insertion device according to claim 5, wherein the housing includes a track, the needle hub coupled to the track such that movement of the handle with respect to the housing correspondingly moves the needle hub along the track. ### Claim 7 (depends on 6) The medical insertion device according to claim 6, wherein the track is curved such that movement of the needle hub from the first locked position to the second locked position rotates the needle tip from a first orientation to a second orientation different from the first orientation. ### Claim 8 (depends on 6) The medical insertion device according to claim 6, wherein the track defines a spiral path. ### Claim 9 (depends on 1) The medical insertion device according to claim 1, wherein the needle hub includes at least one protrusion and the housing includes at least one recess for receiving the at least one protrusion at each of the first, second, and third locked positions. ### Claim 10 (depends on 1) The medical insertion device according to claim 1, wherein the needle hub includes a distally extending handle to enable one-handed grasping of the insertion device and movement of the needle hub between the first, second, and third locked positions. ### Claim 11 (depends on 1) The medical insertion device according to claim 1, further comprising a biasing element coupled to the needle hub. ### Claim 12 (depends on 1) The medical insertion device according to claim 1, wherein the guidewire is coupled to a guidewire handle.