# US 8,784,470 B2 · Balloon catheter with stent and method for manufacturing it > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,784,470 B2 - Document ID: US8784470B2 - Status: Granted - Kind: B2 - Application number: 13/600,342 - Filed: 2012-08-31 - Published: 2012-12-27 - Granted: 2014-07-22 - Earliest claimed: 2001-05-08 - Assignees: C.R. Bard, Inc. - Applicants: Hendrik Jozef Maria Meens; Derk Trip - Inventors: Hendrik Jozef Maria Meens; Derk Trip - Web page: https://patentgrep.com/patent/US8784470B2 ## CPC - A61F 2/958: Inflatable balloons for placing stents or stent-grafts - 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) - A61M 25/1027: {Making of balloon catheters} - A61M 25/1038: {Wrapping or folding devices for use with balloon catheters} - A61F 2002/9583: {Means for holding the stent on the balloon, e.g. using protrusions, adhesives or an outer sleeve} - A61M 25/1002: {characterised by balloon shape (A61M25/1006, A61M25/1009 take precedence)} - A61M 2025/1031: {Surface processing of balloon members, e.g. coating or deposition; Mounting additional parts onto the balloon member's surface} - A61M 2025/1086: {having a special balloon surface topography, e.g. pores, protuberances, spikes or grooves} - Y10T 29/49826: Assembling or joining - 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)} - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The invention relates to a balloon catheter comprising a catheter tube, an inflatable balloon, the ends of which are attached to the catheter tube, and a stent attached around the balloon. The stent extends at least partly along the length of the balloon. In an uninflated state, at least the outside surface of the balloon not covered by the stent is provided with a relief structure which is substantially disappeared in an inflated state of the balloon. The invention also relates to a method for manufacturing such a balloon catheter. ## Claims ### Claim 1 Method for producing a balloon catheter comprising attaching opposite ends of an inflatable balloon to a catheter tube, attaching a stent around the balloon in an uninflated state, and providing at least the outside surface of the balloon not covered by the stent with a relief structure which is substantially disappeared when the balloon is in an inflated state, whereby the relief structure is applied to the outside surface of the balloon by winding a wire helically around the balloon. ### Claim 2 (depends on 1) Method according to claim 1, whereby first the outside surface of the balloon is provided with the relief structure, and then the stent is attached around the balloon. ### Claim 3 (depends on 1) Method according to claim 1, whereby first the stent is attached around the balloon, and then the outside surface of the balloon is provided with the relief structure. ### Claim 4 (depends on 1) Method according to claim 1, whereby before the outside surface of the balloon is provided with the relief structure, obliquely to the stent, padding is applied over the balloon and the stent. ### Claim 5 (depends on 1) Method according to claim 1, whereby the relief structure is applied to the surface of the balloon under the application of heat. ### Claim 6 (depends on 1) Method according to claim 1, whereby the relief structure is applied to the outside surface of the balloon under the application of raised pressure to the inside of the balloon. ### Claim 7 Method for producing a balloon catheter for use in combination with a stent, the method comprising: folding a balloon in an uninflated state in a manner which reduces a profile of the balloon; and forming at least one helical groove in an outside surface of the balloon including by winding a wire about at least a portion of the outside surface of the folded balloon in a direction having a component transverse to a longitudinal axis of the balloon and removing the wire prior to use of the balloon in a subject. ### Claim 8 (depends on 7) Method according to claim 7, wherein the forming step further comprises: raising an internal pressure of the balloon to a selected pressure; and heating the resulting balloon structure. ### Claim 9 (depends on 7) Method according to claim 7, wherein the wire is made of a material which contracts when heated. ### Claim 10 (depends on 7) Method according to claim 7, wherein the material is nylon. ### Claim 11 (depends on 7) Method according to claim 7, further comprising positioning the stent over the balloon prior to winding the wire about the balloon. ### Claim 12 (depends on 11) Method according to claim 11, further comprising placing a filler material adjacent the ends of the stent prior to winding the wire about the balloon. ### Claim 13 (depends on 8) Method according to claim 8, further comprising positioning the stent over the balloon after heating the balloon structure.