# US 2016/0354585 A1 · Balloon catheter having a retractable sheath and locking mechanism with balloon recapture element > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0354585 A1 - Document ID: US20160354585A1 - Status: Published application - Kind: A1 - Application number: 15/241,606 - Filed: 2016-08-19 - Published: 2016-12-08 - Earliest claimed: 2013-07-15 - Inventors: John P. Pigott - Web page: https://patentgrep.com/patent/US20160354585A1 ## CPC - A61M 25/10: Balloon catheters ({A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02;} inflatable balloons for placing stents or stent-grafts A61F2/958 {; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00}) - A61M 2025/105: {having a balloon suitable for drug delivery, e.g. by using holes for delivery, drug coating or membranes} - A61M 2025/1068: {having means for varying the length or diameter of the deployed balloon, this variations could be caused by excess pressure} - A61M 2025/1081: {having sheaths or the like for covering the balloon but not forming a permanent part of the balloon, e.g. retractable, dissolvable or tearable sheaths} - A61M 2025/1088: {having special surface characteristics depending on material properties or added substances, e.g. for reducing friction} - 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 An intravascular balloon catheter device is disclosed having an inner member, an outer member disposed about the inner member and further comprising a balloon. A sheath is disposed about the outer member that moves relative to the balloon so as to selectively expose some or all of the balloon for inflation. A clamp may be used to selectively secure the sheath at a desired position relative to the balloon. A balloon recapture element may permit incremental adjustment to the balloon length and facilitate balloon recapture. ## Claims ### Claim 1 An intravascular balloon catheter device comprising: an inner member; an outer member disposed about the inner member and comprising a balloon; a sheath disposed about the outer member adapted for movement relative to the balloon so as to selectively expose some or all of the balloon for inflation; a clamp configured to selectively secure the sheath at a desired position relative to the balloon; and a balloon recapture element. ### Claim 2 (depends on 1) The device of claim 1 wherein: the balloon recapture element comprises a tapered edge on the distal end of the sheath. ### Claim 3 (depends on 1) The device of claim 1 wherein: the balloon recapture element comprises a smoothed edge on the distal end of the sheath. ### Claim 4 (depends on 1) The device of claim 1 wherein: the balloon recapture element comprises a funnel-shaped tip located on the distal end of the sheath. ### Claim 5 (depends on 1) The device of claim 1 wherein: the balloon recapture element comprises a diametrically enlarged section located on the distal end of the sheath. ### Claim 6 (depends on 1) The device of claim 1 wherein: the balloon recapture element comprises rifling located on the inner surface of the sheath. ### Claim 7 (depends on 6) The device of claim 6 wherein: the balloon recapture element further comprises at least one pleat located on the outer surface of the balloon; and the pleats are configured to mate with the rifling. ### Claim 8 (depends on 7) The device of claim 7 wherein: the rifling is spiral shaped. ### Claim 9 (depends on 7) The device of claim 7 wherein: the rifling extends in straight lines parallel with the center line of the sheath. ### Claim 10 (depends on 6) The device of claim 6 further comprising: a mechanical stop configured to prevent the balloon from fully escaping the sheath. ### Claim 11 (depends on 10) The device of claim 10 wherein: the rifling is configured to mate with the mechanical stop. ### Claim 12 An intravascular balloon catheter device comprising: an outer member; a balloon affixed to a distal end of the outer member and configured to move between an inflated and a deflated state; an inner member disposed within the outer member; a sheath disposed about the outer member configured for movement relative to the balloon so as to selectively expose some or all of the balloon for inflation; a mechanical stop configured to prevent the balloon from fully escaping the sheath; and a balloon recapture element. ### Claim 13 (depends on 12) The device of claim 12 wherein: the balloon recapture element comprises a tapered edge on the distal end of the sheath. ### Claim 14 (depends on 12) The device of claim 12 wherein: the balloon recapture element comprises a smoothed edge on the distal end of the sheath. ### Claim 15 (depends on 12) The device of claim 12 wherein: the balloon recapture element comprises a funnel-shaped tip located on the distal end of the sheath. ### Claim 16 (depends on 12) The device of claim 12 wherein: the balloon recapture element comprises a diametrically enlarged section located on the distal end of the sheath. ### Claim 17 (depends on 12) The device of claim 12 wherein: the balloon recapture element comprises rifling located on the inner surface of the sheath. ### Claim 18 (depends on 17) The device of claim 17 wherein: the balloon recapture element further comprises at least one pleat located on the outer surface of the balloon; and the pleats are configured to mate with the rifling. ### Claim 19 (depends on 12) The device of claim 12 wherein: the rifling is configured to mate with the mechanical stop. ### Claim 20 An intravascular balloon catheter device comprising: an inner member; an outer member disposed about the inner member and comprising a balloon having a plurality of pleats located on the outer surface thereof; a sheath disposed about the outer member adapted for movement relative to the balloon so as to selectively expose some or all of the balloon for inflation, wherein said sheath comprises rifling on the inner surface of said sheath configured to mate with the pleats, and a funnel-shaped tip on the distal end of the sheath, said funnel-shaped tip having a smoothed or tapered distal edge configured to facilitate resheathing of the balloon; a clamp configured to selectively secure the sheath at a desired position relative to the balloon; a tapered insertion tip disposed about an end of the balloon configured to provide a substantially watertight seal between said tip and said sheath when said tip is abutted to said sheath; a drug coating provided on the outer surface of the balloon; and a lubricious coating provided between the inner surface of the sheath and the outer surface of the balloon.