# US 2014/0155830 A1 · Direct stream hydrodynamic catheter system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0155830 A1 - Document ID: US20140155830A1 - Status: Published application - Kind: A1 - Application number: 14/176,814 - Filed: 2014-02-10 - Published: 2014-06-05 - Earliest claimed: 2008-03-20 - Assignees: Boston Scientific Corporation - Applicants: Bayer Medical Care Inc. - Inventors: MICHAEL J. BONNETTE; ERIC J. THOR; DEBRA M. KOZAK; DOUGLAS J. BALL; RICHARD PRATHER; DAVID MORRIS; STEPHEN E. WEISEL - Web page: https://patentgrep.com/patent/US20140155830A1 ## CPC - A61B 17/32037: {for removing obstructions from inner organs or blood vessels, e.g. for atherectomy} - A61M 25/0026: {Multi-lumen catheters with stationary elements (catheter assemblies comprising a catheter in combination with a guide tube, sheath or sleeve A61M2025/0681; catheters comprising telescoping coaxial elements A61M2025/0175)} - A61M 25/0068: {Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure} - A61M 25/007: {Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked} - A61B 2017/22068: {Centering} - A61B 2017/22079: {with suction of debris} - A61B 2217/005: with suction drainage system - A61B 2217/007: with irrigation system - 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 2025/0004: {having two or more concentrically arranged tubes for forming a concentric catheter system} - A61M 2025/0073: {Tip designed for influencing the flow or the flow velocity of the fluid, e.g. inserts for twisted or vortex flow} - 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 direct stream hydrodynamic catheter system is provided for the removal of thrombus, lesions and the like including provisions for the infusion of drugs, lysing fluids and the like into a blood vessel. Physician controlled powered direct fluid jet streams emanate from a fluid jet emanatory in the form of robust radially directed fluid jet streams to impinge upon and ablate difficult and strong thrombus and lesions within a blood vessel. Effluent aspiration is controlled by an exhaust regulator in the form of a roller pump, but effluent removal can be assistingly influenced by the fluid pressure associated with the radially directed fluid jet streams. ## Claims ### Claim 1 A direct stream hydrodynamic catheter system comprising a manifold having a central elongated tubular body with a proximal end and a distal end, an elongated flexible catheter tube having a proximal end and a distal end, said proximal end of said catheter tube extending into and distally from said distal end of said central tubular body of said manifold, a tapered flexible tip having a proximal end and a distal end, said tapered flexible tip having a central passageway extending therethrough, said elongated flexible catheter tube having an elongated distal section, said elongated distal section of said catheter tube having a proximal end and a distal end, said distal end of said elongated distal section being attached to said proximal end of said tapered flexible tip, a tubular fluid jet emanator positioned within said elongated distal section proximal to said proximal end of said tapered flexible tip, one or more inflow orifices in said distal section proximal to said tubular fluid jet emanator, said tubular fluid jet emanator having a proximal end and a distal end, a plurality of spaced, radially directed, fluid jet orifices around a peripheral surface of said tubular fluid jet emanator, said spaced, radially directed, fluid jet orifices being adjacent said proximal end of said tubular fluid jet emanator, a plurality of holes in said elongated distal section and in corresponding alignment with said plurality of spaced, radially directed, fluid jet orifices, an elongated, flexible, high pressure tube having a proximal end and a distal end, said elongated, flexible, high pressure tube extending from said manifold, through said elongated flexible catheter tube, and terminating within said tubular fluid jet emanator, and a high pressure fluid source delivering pressurized fluid into said proximal end of said elongated, flexible, high pressure tube. ### Claim 2 (depends on 1) The direct stream hydrodynamic catheter system of claim 1, wherein said tubular fluid jet emanator is fixed within said elongated distal section of said elongated flexible catheter tube. ### Claim 3 (depends on 2) The direct stream hydrodynamic catheter system of claim 2, wherein said tubular fluid jet emanator has a central passageway therethrough and an internal manifold communicating with said distal end of said elongated, flexible, high pressure tube, said plurality of spaced, radially directed, fluid jet orifices and said central passageway. ### Claim 4 (depends on 3) The direct stream hydrodynamic catheter system of claim 3, wherein said tubular fluid jet emanator has an outer annular groove therein, said distal section of said elongated flexible catheter tube has a first circular marker band surrounding an outer surface of said distal section and opposite said annular groove of said tubular fluid jet emanator, said first circular marker band compressing said outer surface within said annular groove of said tubular fluid jet emanator. ### Claim 5 (depends on 4) The direct stream hydrodynamic catheter system of claim 4, wherein an internal support ring is positioned within said proximal end of said elongated distal section and said elongated, flexible, high pressure tube is fixed thereto. ### Claim 6 (depends on 5) The direct stream hydrodynamic catheter system of claim 5, wherein a second circular marker band surrounds an outer surface near said proximal end of said elongated distal section, said second circular marker band being opposite to said internal support ring, said second circular marker band clamping said outer surface to said internal support ring. ### Claim 7 (depends on 6) The direct stream hydrodynamic catheter system of claim 6, wherein said first and second circular marker bands are radiopaque marker bands. ### Claim 8 (depends on 1) The direct stream hydrodynamic catheter system of claim 1, wherein said central elongated tubular body has a tubular connection branch attached thereto at an angle facing towards said proximal end of said central elongated tubular body, a Luer connector connected to the free end of said tubular connection branch, a high pressure fluid connection port having a proximal end and a distal end, said Luer connector being connected to said distal end of said high pressure fluid connection port, a high pressure fluid pump connected to said proximal end of said high pressure connection port, a high pressure fluid source connected to said high pressure fluid pump and said proximal end of said elongated flexible high pressure tube being in fluid communication with said distal end of said high pressure fluid connection port through said Luer connector. ### Claim 9 (canceled) ### Claim 10 (depends on 8) The direct stream hydrodynamic catheter system of claim 8, wherein a tubular exhaust branch is connected to a side of said tubular connection branch, an exhaust regulator is connected to said tubular exhaust branch and a collection chamber is connected to said exhaust regulator. ### Claim 11 (depends on 8) The direct stream hydrodynamic catheter system of claim 8, wherein said manifold includes a self-sealing hemostasis valve positioned internally of said central elongated tubular body near said proximal end thereof, a hemostasis nut having a proximal end and a distal end, said distal end of said hemostasis nut being connected to said proximal end of said central elongated tubular body and fixing said hemostasis valve within said central elongated tubular body. ### Claim 12 (depends on 8) The direct stream hydrodynamic catheter system of claim 8, wherein said distal end of said central elongated tubular body has a strain relief tube connected thereto by means of a Luer fitting and wherein said proximal end of said elongated flexible catheter tube passes into said strain relief tube and is fixed therein. ### Claim 13 (depends on 8) The direct stream hydrodynamic catheter system of claim 8, wherein said elongated flexible high pressure tube is made from stainless steel or another suitable flexible material. ### Claim 14 (depends on 8) The direct stream hydrodynamic catheter system of claim 8, wherein said elongated flexible catheter tube is made from a flexible plastic material and has a hydrophilic coating along its outer surface. ### Claim 15 (depends on 1) The direct stream hydrodynamic catheter system of claim 1, wherein said pressurized fluid has a velocity between 1 m/s and 250 m/s and a pressure between 50 psi and 20,000 psi. ### Claim 16 (depends on 1) The direct stream hydrodynamic catheter system of claim 1, wherein said catheter system is used in conjunction with an elongated flexible guidewire passing through said central elongated tubular body of said manifold, through said elongated flexible catheter tube, and through said passageway of said tapered flexible tip. ### Claim 17 (depends on 1) The direct stream hydrodynamic catheter system of claim 1, wherein a solution of one or more drugs is delivered into said proximal end of said elongated flexible high pressure tube. ### Claim 18 (canceled) ### Claim 19 (depends on 2) The direct stream hydrodynamic catheter system of claim 2, wherein said tubular fluid jet emanator has a proximal face and a plurality of spaced, proximally directed, fluid jet orifices in said proximal face. ### Claim 20 (depends on 19) The direct stream hydrodynamic catheter system of claim 19, wherein the diameter of each of said plurality of spaced, radially directed, fluid jet orifices is smaller than the diameter of each of said plurality of spaced, proximally directed, fluid jet orifices. ### Claim 21 (depends on 20) The direct stream hydrodynamic catheter system of claim 20, wherein said tubular fluid jet emanator has a central passageway therethrough and an internal manifold communicating with said distal end of said elongated, flexible, high pressure tube, said plurality of spaced, radially directed, fluid jet orifices, said plurality of spaced, proximally directed, fluid jet orifices, and said central passageway. ### Claim 22 (canceled) ### Claim 23 (depends on 21) The direct stream hydrodynamic catheter system of claim 21, wherein said pressurized fluid has a velocity of between 1 m/s and 250 m/s and a pressure of between 50 psi and 20,000 psi. ### Claim at position 24 24-59. (canceled)