# US 11,896,246 B2 · Systems and methods for removing undesirable material within a circulatory system utilizing a balloon catheter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,896,246 B2 - Document ID: US11896246B2 - Status: Granted - Kind: B2 - Application number: 16/667,060 - Filed: 2019-10-29 - Published: 2020-04-23 - Granted: 2024-02-13 - Earliest claimed: 2007-12-20 - Assignees: AngioDynamics, Inc. - Applicants: AngioDynamics, Inc. - Inventors: Lishan Aklog; Michael Glennon - Web page: https://patentgrep.com/patent/US11896246B2 ## CPC - A61B 17/22: Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for - A61B 17/22032: {having inflatable gripping elements (balloon catheters A61M25/10)} - A61B 17/3207: Atherectomy devices {working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions (A61B17/32037 takes precedence; endoscopic cutting instruments A61B17/320016)} - A61M 1/3621: {Extra-corporeal blood circuits (single-needle circuits A61M1/30)} - A61B 2017/22034: {for gripping the obstruction or the tissue part from inside} - A61B 2017/22079: {with suction of debris} - A61B 2017/22094: {for crossing total occlusions, i.e. piercing} - A61M 1/77: {Suction-irrigation systems (aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463)} - A61M 1/79: {Filters for solid matter (specially adapted for dental use A61C17/065)} - A61M 1/804: {using Laval or Venturi jet pumps} - A61M 1/84: {Drainage tubes; Aspiration tips (for negative pressure wound therapy A61M1/90; for surgical cutting instruments A61B17/32)} - A61M 2205/7545: for solid matter, e.g. microaggregates - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - 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 A system for removing an undesirable material from within a vessel is provided. The system includes a cannula designed for maneuvering within a blood vessel to a site of interest and applying a suction force, such that the undesirable material can be captured and removed along the cannula away from the site. The system also may include a catheter having a balloon at its distal end. The balloon may be designed to be positioned adjacent to the undesirable material such that the undesirable material is situated between the balloon and the cannula. The catheter may also be designed to subsequently impart a force onto the undesirable material for removal of the undesirable material. A method for removing an undesirable material from within a vessel is also provided. ## Claims ### Claim 1 A system for capturing an undesirable material, the system comprising: a suction cannula comprising an expandable distal end comprising at least two expandable strips and an impermeable membrane; wherein each of the at least two expandable strips are configured to comprise a strip base and a strip distal most end, and a space extending between the at least two expandable strips; wherein the impermeable membrane is configured to extend from the strip base to the strip distal most end and across the space between the at least two expandable strips; and a pump capable of creating a suction force through the suction cannula and a driving force into either a second cannula or a reservoir. ### Claim 2 (depends on 1) The system of claim 1, wherein the pump is configured to be manually operated. ### Claim 3 (depends on 1) The system of claim 1, wherein the expandable distal end is configured to be an expandable funnel shape. ### Claim 4 (depends on 1) The system of claim 1, further comprising an outer sheath; wherein the outer sheath is configured to be coaxially moveable relative to the suction cannula. ### Claim 5 (depends on 4) The system of claim 4, wherein the expandable distal end is in a collapsed position when the expandable distal end is substantially covered by the outer sheath. ### Claim 6 (depends on 4) The system of claim 4, wherein the expandable distal end is in an expanded position when the expandable distal end is substantially uncovered by the outer sheath. ### Claim 7 (depends on 1) The system of claim 1, further comprising a filter in fluid communication with the suction cannula and the pump. ### Claim 8 (depends on 1) The system of claim 1, wherein the impermeable membrane is configured to enhance the suction force. ### Claim 9 (depends on 1) The system of claim 1, wherein a rate of the suction force through the suction cannula is the same as a rate of the driving force into either the second cannula or the reservoir. ### Claim 10 (depends on 1) The system of claim 1, wherein a rate of the suction force through the suction cannula is different from a rate of the driving force into either the second cannula or the reservoir. ### Claim 11 A system for capturing an undesirable material, the system comprising: a suction cannula having an expandable distal end comprising at least two expandable strips and an impermeable membrane; wherein each of the at least two expandable strips are configured to comprise a strip base and a strip distal most end, and a space extending between the at least two expandable strips; wherein the impermeable membrane is configured to extend from the strip base to the strip distal most end and across the space between the at least two expandable strips; a reservoir; and a manually operated pump capable of creating a suction force through the suction cannula and a driving force into the reservoir. ### Claim 12 (depends on 11) The system of claim 11, wherein the reservoir is configured to collect the undesirable material. ### Claim 13 (depends on 11) The system of claim 11, wherein the manually operated pump is configured to be activated intermittently. ### Claim 14 (depends on 11) The system of claim 11, wherein the reservoir is configured to accommodate both fluid and air. ### Claim 15 A system for capturing an undesirable material, the system comprising: a suction cannula having an expandable distal end comprising at least two expandable strips and an impermeable membrane; wherein each of the at least two expandable strips are configured to comprise a strip base and a strip distal most end, and a space extending between the at least two expandable strips; wherein the impermeable membrane is configured to extend from the strip base to the strip distal most end and across the space between the at least two expandable strips; a reservoir; and a manually operated pump capable of creating a suction force through the suction cannula; and wherein the manually operated pump is configured to be activated intermittently. ### Claim 16 (depends on 15) The system of claim 15, further comprising a filter. ### Claim 17 (depends on 16) The system of claim 16, wherein the pump and the filter are configured to be combined into a single unit. ### Claim 18 (depends on 15) The system of claim 15, wherein the reservoir is configured to be closed to atmosphere. ### Claim 19 (depends on 15) The system of claim 15, wherein the system is configured to be closed to atmosphere. ### Claim 20 (depends on 15) The system of claim 15, wherein a rate of the suction force through the suction cannula is the same as a rate of a driving force into the reservoir.