# US 2014/0194910 A1 · Vessel shaping devices and methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0194910 A1 - Document ID: US20140194910A1 - Status: Published application - Kind: A1 - Application number: 14/236,635 - Filed: 2012-08-01 - Published: 2014-07-10 - Earliest claimed: 2011-08-01 - Assignees: Laminate Medical Technologies Ltd. - Inventors: Eyal Orion; Tamar Gilon - Web page: https://patentgrep.com/patent/US20140194910A1 ## CPC - A61M 1/3655: {Arterio-venous shunts or fistulae} - A61B 17/11: for performing anastomosis; Buttons for anastomosis - A61F 2/82: Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents (stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07) - A61F 2002/068: {Modifying the blood flow model, e.g. by diffuser or deflector} - 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) - 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) ## Abstract Disclosed is a medical device for shaping a vessel accommodated therein in a predetermined form, wherein said vessel includes a vein and an artery which are connected at a artifactual vascular junction thereof. The device includes an external vascular support (100) having at least one vascular support wall for accommodating an exterior vessel wall of a vessel therein when implanted. The support includes an arterial portion (1304) for apposition with said artery when accommodated therein, and/or a venous portion (1302) for apposition with said vein when accommodated therein. The venous portion (1302) and/or said arterial portion (1304) are shaped at a junction thereof to provide a vessel rounding to at least a portion of said vessel junction when in apposition with the latter upon implantation of said device for said vessel shaping. Corresponding methods are also disclosed. Thus dysfunction or failure of a vessel of the artifactual vascular junction may be reduced, minimized, or eliminated. ## Claims ### Claim 1 An external vascular support for shaping a junction between an artery and a vein anastomosed to the artery the support comprising: an arterial portion that couples to the artery, and a venous portion that couples to the vein to form a filleted junction between the vein and the artery and maintain the vein at an acute angle to the artery. ### Claim at position 2 2-4. (canceled) ### Claim 5 (depends on 1) The external vascular support of claim 1, wherein the filleted junction has a radius of curvature in the range of 0.25 mm to 4 mm. ### Claim at position 4 6-9. (canceled) ### Claim 10 (depends on 1) The external vascular support of claim 1, wherein said acute angle is in the range of 20 to 60 degrees. ### Claim 11 (depends on 1) The external vascular support of claim 1, wherein said venous portion is configured to embrace said vein, and has a truncated conical shape, with a smallest diameter adjacent said junction. ### Claim at position 7 12-28. (canceled) ### Claim 29 (depends on 1) The external vascular support of claim 1, wherein said junction is an end-to-side anastomosis of said artery and said vein. ### Claim at position 9 30-52. (canceled) ### Claim 53 (depends on 5) The external vascular support of claim 5, wherein that the fillet has a radius of curvature in the range of 0.5 mm to 2.5 mm. ### Claim 54 An external vascular support for shaping a junction between an artery and a vein anastomosed to the artery, the support comprising: an arterial portion that couples to the artery, and a venous portion that couples to the vein; wherein said arterial portion and/or said venous portion comprises at least one protrusion that presses onto the exterior vessel wall of the artery and/or the vein. ### Claim 55 (depends on 54) The external vascular support of claim 54, wherein the vein is maintained at an acute angle to the artery. ### Claim 56 (depends on 55) The external vascular support of claim 55, wherein the at least one protrusion is located along the venous portion on a side having the acute angle and near the arterial portion. ### Claim 57 (depends on 55) The external vascular support of claim 55, wherein the at least one protrusion is located along the arterial portion in a region substantially opposite from the junction between the artery and the vein. ### Claim 58 (depends on 57) The external vascular support of claim 57, wherein the at least one protrusion is located closer to a downstream side of the region than an upstream side of the region. ### Claim 59 (depends on 55) The external vascular support of claim 55, wherein the at least one protrusion is operable to form a fillet at the acute angle of the junction between the vein and the artery. ### Claim 60 (depends on 54) The external vascular support of claim 54, wherein the at least one protrusion is attachable at a desired location on the external vascular support. ### Claim 61 (depends on 54) The external vascular support of claim 54, wherein the at least one protrusion is integral to the external vascular support. ### Claim 62 (depends on 54) The external vascular support of claim 54, wherein the protrusion is expandable. ### Claim 63 (depends on 62) The external vascular support of claim 62, wherein the size and/or shape of the protrusion is adjustable. ### Claim 64 (depends on 59) The external vascular support of claim 59, wherein the fillet has a radius of curvature in the range of 0.25 mm to 4 mm. ### Claim 65 (depends on 64) The external vascular support of claim 64, wherein the fillet has a radius of curvature in the range of 0.5 mm to 2.5 mm. ### Claim 66 (depends on 55) The external vascular support of claim 55, wherein said acute angle is in the range of 20 to 60 degrees. ### Claim 67 (depends on 54) The external vascular support of claim 54, wherein said venous portion is configured to embrace said vein, and has a truncated conical shape, with a smallest diameter adjacent said junction. ### Claim 68 (depends on 54) The external vascular support of claim 54, wherein said junction is an end-to-side anastomosis of said artery and said vein.