# US 2022/0032016 A1 · Enhanced Balloon Bonding For Balloon Guide Catheters While Minimizing Outer Profiles > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0032016 A1 - Document ID: US20220032016A1 - Status: Published application - Kind: A1 - Application number: 16/942,699 - Filed: 2020-07-29 - Published: 2022-02-03 - Earliest claimed: 2020-07-29 - Assignees: Neuravi Limited - Applicants: Neuravi Limited - Inventors: Patrick CONNOLLY - Web page: https://patentgrep.com/patent/US20220032016A1 ## CPC - A61M 25/1034: {Joining of shaft and balloon} - A61M 25/005: {with embedded materials for reinforcement, e.g. wires, coils, braids} - 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 25/1018: {Balloon inflating or inflation-control devices} - A61M 25/104: {used for angioplasty} - A61B 2017/22067: {Blocking; Occlusion (A61B2017/22054 takes precedence)} - A61M 25/1002: {characterised by balloon shape (A61M25/1006, A61M25/1009 take precedence)} - A61M 2025/1065: {having a balloon which is inversely attached to the shaft at the distal or proximal end} - A61M 2025/109: {having balloons for removing solid matters, e.g. by grasping or scraping plaque, thrombus or other matters that obstruct the flow} - 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) ## Abstract Balloon guide catheter with a balloon bonded thereto maximizing bonding strength and integrity while minimizing outer profile. Reflow jacket(s) is melted to/embedded within a braid supporting structure of the catheter securing beneath the balloon. Radially arranged apertures and/or recesses may be defined in the balloon through which adhesive is seepable upwards when secured about the catheter shaft. Proximal and distal bond interface areas of the balloon may be skived at right angles into two sections each extending radially 180°. Proximal and/or distal edges of the balloon may be flipped inwards prior to securing to the catheter shaft to form respective proximal and/or inverted bonds. During prepping of the catheter, residual air may be purged from the balloon via an exhaust hole defined in the compliant balloon or an exhaust tube secured between the exterior surface of the catheter shaft and the balloon. ## Claims ### Claim 1 A balloon guide catheter comprising: a catheter shaft having defined longitudinally therein a central lumen and an inflation lumen substantially parallel to the central lumen; the catheter shaft having a braid supporting the central lumen and the inflation lumen; a balloon disposed about the braid; and at least one reflow jacket disposed about the balloon; the reflow jacket made of a material reflowable into the braid securing the balloon to the catheter shaft; wherein an exposed portion of the balloon is not covered by the at least one reflow jacket. ### Claim 2 (depends on 1) The balloon guide catheter of claim 1, wherein the braid encompasses the central lumen as well as being woven below and above the inflation lumen in a FIG. 8 configuration. ### Claim 3 (depends on 1) The balloon guide catheter of claim 1, wherein the balloon has a distal edge and an opposite proximal edge; and wherein the balloon guide catheter has two reflow jackets including: (i) a proximal reflow jacket overlapping the proximal edge of the balloon; and (ii) a distal reflow jacket overlapping the distal edge of the balloon; wherein the proximal and distal reflow jackets extend radially 360° about a circumference of the catheter shaft and are separated from one another in an axial direction forming a 360° radial gap therebetween revealing the exposed portion of the balloon; and wherein in an inflated state the exposed portion of the balloon protrudes radially outward in the 360° radial gap. ### Claim 4 (depends on 1) The balloon guide catheter of claim 1, wherein the balloon guide catheter has a single reflow jacket extending radially 360° about a circumference of the catheter shaft; the single reflow jacket having an opening that coincides with but smaller in dimension than a perimeter of the balloon revealing therethrough the exposed portion of the balloon. ### Claim 5 (depends on 1) The balloon guide catheter of claim 1, wherein a distal portion of the inflation lumen coinciding with the at least one reflow jacket is not supported by the braid. ### Claim 6 (depends on 1) The balloon guide catheter of claim 1, wherein a distal portion of the inflation lumen coinciding with the at least one reflow jacket is supported by the braid. ### Claim 7 A balloon guide catheter comprising: a catheter shaft; a balloon disposed about the catheter shaft, the balloon being secured to the catheter shaft at a distal bond interface area and an opposite proximal bond interface area; wherein the balloon has a plurality of radially arranged apertures and/or recesses defined in each of the distal and proximal bond interface areas of the balloon; and adhesive disposed about the exterior surface of the catheter shaft and seepable upwards into the plural radially arranged apertures and/or recesses in the balloon. ### Claim 8 (depends on 7) The balloon guide catheter according to claim 7, wherein each of the radially arranged apertures is a radial slit or hole extending through the balloon from an interior surface through to an exterior surface; or wherein each of the radially arranged recesses is defined along the interior surface of the balloon without penetrating the exterior surface. ### Claim 9 A balloon guide catheter comprising: a catheter shaft having an exterior surface; a balloon disposed about the exterior surface of the catheter shaft, the balloon having an inverted distal bonding interface area including an inverted distal edge and/or an opposite inverted proximal bonding interface area including a proximal edge; the inverted distal bonding interface area and/or the inverted proximal bonding interface area of the balloon being secured via an adhesive to the exterior surface of the catheter shaft. ### Claim 10 (depends on 9) The balloon guide catheter according to claim 9, wherein the balloon has the inverted distal bonding interface area including the inverted distal edge and the opposite inverted proximal bonding interface area including the proximal edge; and each of the inverted distal bonding interface area and the inverted proximal bonding interface area being secured via the adhesive to the exterior surface of the catheter shaft. ### Claim 11 A balloon guide catheter comprising: a catheter shaft; a balloon disposed about the catheter shaft, the balloon being secured to the catheter shaft at a skived distal bond interface area and/or an opposite skived proximal bond interface area; and wherein the skived distal bond interface area and/or the skived proximal bond interface area of the balloon is secured to the catheter shaft via an adhesive. ### Claim 12 (depends on 11) The balloon guide catheter according to claim 11, wherein the skived proximal bond interface area and/or the skived distal bond interface area each includes: a skived bond first radial section extending 180° radially about a circumference of the catheter shaft and a skived bond second radial section extending 180° radially about the circumference of the catheter shaft. ### Claim 13 (depends on 12) The balloon guide catheter according to claim 12, wherein the skived proximal bond interface area and/or the skived distal bond interface area each includes a non-skived bond third radial section extending 360° radially about a circumference of the catheter shaft. ### Claim 14 (depends on 13) The balloon guide catheter according to claim 13, wherein the non-skived bond third radial section is disposed in an axial direction between the skived bond first and second radial sections. ### Claim 15 (depends on 13) The balloon guide catheter according to claim 13, wherein the skived first and second radial sections are contiguous to one another, with the non-skived third radial section arranged contiguous with a free edge of either one of the skived first or second radial sections. ### Claim 16 A balloon guide catheter comprising: a catheter shaft having an exterior surface; a balloon disposed about the catheter shaft, the balloon being secured to the catheter shaft; and a vent tube secured between the balloon and the exterior surface of the catheter shaft. ### Claim 17 A balloon guide catheter comprising: a catheter shaft; and a balloon disposed about the catheter shaft, the balloon being secured to the catheter shaft at a distal bond interface area and an opposite proximal bond interface area; wherein the balloon has an exhaust hole defined therein between the proximal and distal bond interface areas; the balloon being transitionable to an expanded state with a portion of the balloon extendible over at least one of the respective proximal and distal bond interface areas in physical contact with an exterior surface of the catheter shaft sealing the exhaust hole. ### Claim 18 (depends on 17) The balloon guide catheter according to claim 17, wherein at least one of the proximal and distal bond interface areas is secured to the catheter shaft forming a non-inverted bond. ### Claim 19 (depends on 17) The balloon guide catheter according to claim 17, wherein at least one of the proximal and distal bond interface areas includes an edge of the balloon tucked inwards; and that portion of the balloon tucked inwards is secured to the catheter shaft forming an inverted bond.