# US 2021/0330481 A1 · Guiding sheath system and method of delivering an endovascular device using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0330481 A1 - Document ID: US20210330481A1 - Status: Published application - Kind: A1 - Application number: 17/242,989 - Filed: 2021-04-28 - Published: 2021-10-28 - Earliest claimed: 2020-04-28 - Assignees: University of Kentucky Research Foundation - Applicants: University of Kentucky Research Foundation - Inventors: David J. Minion - Web page: https://patentgrep.com/patent/US20210330481A1 ## CPC - A61F 2/966: with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod - A61M 25/0147: {with movable mechanical means, e.g. pull wires} - A61M 25/0662: {Guide tubes} - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - 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 guiding sheath system includes a first sheath having a proximal end and a distal end, an extension member connected to the distal end of the first sheath, the extension member terminating in a distal end, a second sheath extending through the first sheath, the second sheath having a proximal end and a distal end, and a cap connected to the distal end of the extension member and the distal end of the second sheath. Upon advancing the second sheath through the first sheath, the cap restrains the distal end of the second sheath and the cap deflects relative to the first sheath thereby causing a portion of the second sheath protruding from the first sheath to bend into a curve with the distal end of the second sheath at a vector different from a vector of the first sheath. ## Claims ### Claim 1 A guiding sheath system, comprising: a first sheath having a proximal end and a distal end; an extension member connected to the distal end of the first sheath, the extension member terminating in a distal end; a second sheath extending through the first sheath, the second sheath having a proximal end and a distal end; and a cap connected to the distal end of the extension member and the distal end of the second sheath; wherein, upon advancing the second sheath through the first sheath, the cap restrains the distal end of the second sheath and the cap deflects relative to the first sheath thereby causing a portion of the second sheath protruding from the first sheath to bend into a curve with the distal end of the second sheath at a vector different from a vector of the first sheath. ### Claim 2 (depends on 1) The guiding sheath system of claim 1, wherein the extension member is fixedly connected to the distal end of the first sheath with the extension member extending away from the distal end of the first sheath at a vector the same as the vector of the first sheath. ### Claim 3 (depends on 1) The guiding sheath system of claim 1, wherein the extension member is configured to deflect relative to the first sheath, such that, upon advancing the second sheath through the first sheath, the extension member extends at a vector different from the vector of the first sheath. ### Claim 4 (depends on 1) The guiding sheath system of claim 1, further comprising a second extension member connected to the distal end of the first sheath, the second extension member terminating in a distal end. ### Claim 5 (depends on 4) The guiding sheath system of claim 4, wherein the second extension member is shorter than the first extension member. ### Claim 6 (depends on 4) The guiding sheath system of claim 4, wherein the second extension member is the same length as the first extension member. ### Claim 7 (depends on 4) The guiding sheath system of claim 4, wherein the second extension member is configured to deflect relative to the first sheath, such that, upon advancing the second sheath through the first sheath, the second extension member extends at a vector different from the vector of the first sheath. ### Claim 8 (depends on 1) The guiding sheath system of claim 1, wherein the extension member is pivotally connected to the distal end of the first sheath. ### Claim 9 (depends on 4) The guiding sheath system of claim 4, wherein the second extension member is pivotally connected to the distal end of the first sheath. ### Claim 10 (depends on 8) The guiding sheath system of claim 8, wherein the second extension member is pivotally connected to the distal end of the first sheath. ### Claim 11 (depends on 1) The guiding sheath system of claim 1, wherein the extension member is slidably connected to the distal end of the first sheath such that, when the extension member is in a retracted position, the cap is positioned adjacent to the distal end of the first sheath and when the extension member is in an extended position, the extension member extends from the distal end of the first sheath such that the cap is positioned a distance away from the distal end of the first sheath. ### Claim 12 (depends on 11) The guiding sheath system of claim 11, wherein, upon advancing the second sheath through the first sheath, the extension member is moved into the extended position and the extension member deflects relative to the first sheath, thereby causing the extension member to extend at the vector different from the vector of the first sheath. ### Claim 13 (depends on 11) The guiding sheath system of claim 11, wherein the distal end of the first sheath, the cap, or both the distal end of the first sheath and the cap define a cutout, wherein the extension member passes through the cutout when the extension member deflects relative to the first sheath. ### Claim 14 A method of delivering an endovascular device within the vasculature of a patient, comprising: providing a guiding sheath system including a first sheath having a proximal end and a distal end, an extension member connected to the distal end of the first sheath, the extension member terminating in a distal end, a second sheath extending through the first sheath, the second sheath having a proximal end and a distal end, and a cap connected to the distal end of the extension member and the distal end of the second sheath; inserting the guiding sheath system within the vasculature of a patient such that the cap is at a predetermined location within the vasculature; advancing the second sheath through the first sheath such that the cap restrains the distal end of the second sheath and the cap deflects relative to the first sheath thereby causing a portion of the second sheath protruding from the first sheath to bend into a curve with the distal end of the second sheath at a vector different from a vector of the first sheath; and advancing an endovascular device through the second sheath to a position forward of the distal end of the second sheath along the vector of the distal end of the second sheath.