# US 9,867,726 B2 · Device for inserting an implant > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,867,726 B2 - Document ID: US9867726B2 - Status: Granted - Kind: B2 - Application number: 13/700,376 - Filed: 2011-05-25 - Published: 2013-05-30 - Granted: 2018-01-16 - Earliest claimed: 2010-05-28 - Assignees: Phenox GmbH - Applicants: Carsten Aporta; Jörg Ascherfeld; Ralf Hannes; Hermann Monstadt - Inventors: Carsten Aporta; Jörg Ascherfeld; Ralf Hannes; Hermann Monstadt - Web page: https://patentgrep.com/patent/US9867726B2 ## CPC - A61F 2/95: Instruments specially adapted for placement or removal of stents or stent-grafts - A61B 17/12113: {within an aneurysm} - A61B 17/1214: {Coils or wires} - A61B 17/12022: {Occluding by internal devices, e.g. balloons or releasable wires (plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20)} - A61B 2017/12063: {electrolytically detachable} - A61B 2017/12072: {the heat created by laser light} - A61B 2017/12086: {magnetically detachable} - A61F 2002/9505: {having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument} - 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) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract The invention relates to a device having an endovascular implant (1) for the introduction into blood vessels or body cavities of the human or animal body and an insertion aid (2), wherein the implant (1) and the insertion aid (2) being connected to each other via a detachment element (3) designed to be electrolytically corrodible so that after the implant (1) has been inserted into the body and a voltage has been applied an at least partial dissolution of the detachment element (3) takes place causing the implant (1) to be separated from its the insertion aid (3), with the detachment element (3) being made of a cobalt-chrome alloy containing at least 20% w/w cobalt and 10 to 40% w/w chrome. ## Claims ### Claim 1 Device comprising an endovascular implant (1) for the introduction into blood vessels or body cavities of the human or animal body and an insertion aid (2), wherein the implant (1) and the insertion aid (2) are connected to each other via a detachment element (3) made of a metal less noble than the implant or the insertion aid metal and designed to be electrolytically corrodible and severed so that after the implant (1) has been inserted into the body and a voltage has been applied, severance by dissolution of the detachment element (3) takes place causing the implant (1) to be separated from the insertion aid (2), wherein the detachment element (3) is made of a cobalt-chrome alloy containing at least 20% w/w cobalt and 10 to 40% w/w chrome. ### Claim 2 (depends on 1) Device according to claim 1, wherein the cobalt-chrome alloy contains up to 70% w/w of cobalt. ### Claim 3 (depends on 2) Device according to claim 2, wherein the cobalt-chrome alloy contains between 30 and 60% w/w of cobalt. ### Claim 4 (depends on 1) Device according to claim 1, wherein the cobalt-chrome alloy contains between 15 and 30% w/w of chrome. ### Claim 5 (depends on 1) Device according to claim 1 wherein the cobalt-chrome alloy contains between 4 and 12% w/w of molybdenum. ### Claim 6 (depends on 1) Device according to claim 1, wherein the cobalt-chrome alloy contains between 8 and 40% w/w of nickel. ### Claim 7 (depends on 1) Device according to claim 1, wherein the cobalt-chrome alloy contains between 5 and 20% w/w of tungsten. ### Claim 8 (depends on 1) Device according to any one of claim 1, wherein the cobalt-chrome alloy contains up to 30% w/w of manganese. ### Claim 9 (depends on 1) Device according to claim 1, wherein the cobalt-chrome alloy contains up to 30% w/w of iron. ### Claim 10 (depends on 1) Device according to claim 1, wherein the insertion aid is a guide wire (2). ### Claim 11 (depends on 1) Device according to claim 1, wherein the implant (1) is an occlusion helix, a stent, a detachable stent retrieval system or a stent-like system devised so as to influence the flow of blood. ### Claim 12 (depends on 1) Device according to claim 1, wherein the detachment element (3) consists of one or several wires. ### Claim 13 (depends on 12) Device according to claim 12, wherein the one or several wires have a round, square, oval and/or tubular cross section. ### Claim 14 (depends on 1) Device according to claim 1, wherein the detachment element (3) has a rough surface. ### Claim 15 (depends on 1) Device according to claim 1, wherein the detachment element (3) is pre-corroded. ### Claim 16 (depends on 1) Device according to claim 1, wherein the detachment element (3) or the alloy of which the detachment element (3) is to be manufactured is subjected to a heat treatment. ### Claim 17 (depends on 1) Device according to claim 1, wherein said device is provided in combination with a micro-catheter. ### Claim 18 Device comprising an endovascular implant (1) for the introduction into blood vessels or body cavities of the human or animal body and an insertion aid (2), wherein the implant (1) and the insertion aid (2) are connected to each other via a detachment element (3) designed to be electrolytically corrodible and severed so that after the implant (1) has been inserted into the body and a voltage has been applied, severance by dissolution of the detachment element (3) takes place causing the implant (1) to be separated from the insertion aid (2), wherein the detachment element (3) is made of a cobalt-chrome alloy containing at least 20% w/w cobalt and 10 to 40% w/w chrome and does not form a local corrosion element. ### Claim 19 Device comprising an endovascular implant (1) for the introduction into blood vessels or body cavities of the human or animal body and an insertion aid (2), wherein the implant (1) and the insertion aid (2) are connected to each other via a detachment element (3) designed to be electrolytically corrodible and severed so that after the implant (1) has been inserted into the body and a voltage has been applied, severance by dissolution of the detachment element (3) takes place causing the implant (1) to be separated from the insertion aid (2), wherein the detachment element (3) is made of a cobalt-chrome alloy containing at least 20% w/w cobalt and 10 to 40% w/w chrome and is insulated against the implant.