Direct stream hydrodynamic catheter system

• US 10,321,932 B2
• Filed: 03/07/2017
• Issued: 06/18/2019
• Est. Priority Date: 02/06/1998
• Status: Active Grant

• Current Assignee: Boston Scientific Medical Device Limited (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Limited (Boston Scientific Corporation)
• Inventors: Bonnette, Michael J., Thor, Eric J., Kozak, Debra M., Ball, Douglas J., Weisel, Stephen E., Morris, David B., Prather, Richard R.
• Primary Examiner(s): Farrar, Lauren P
• Application Number:
  US15/452,328
• Publication Number:
  US 20170172603A1
• Time in Patent Office: 833 Days
• CPC Class Codes: A61B 17/32037 for removing obstructions from inner organs or blood vessels, e.g. for atherectomy
• CPC Class Codes: A61B 2017/22068 Centering
• CPC Class Codes: A61B 2017/22079 with suction of debris
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 2217/007 with irrigation system
• CPC Class Codes: A61M 2025/0004 having two or more concentrically arranged tubes for forming a concentric catheter system
• CPC Class Codes: A61M 2025/0073 Tip designed for influencing the flow or the flow velocity of the fluid, e.g. inserts for twisted or vortex flow general flow characteristics A61M2206/10
• CPC Class Codes: 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
• CPC Class Codes: A61M 25/0068 Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
• CPC Class Codes: A61M 25/007 Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
• CPC Class Codes: 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

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

1. A medical catheter, comprising:

a catheter body having a proximal portion, a distal portion and a lumen extending therein;

a tubular member positioned within the lumen of the catheter body;

a fluid jet emanator positioned within the lumen of the catheter body;

an inflow orifice formed through a wall of the catheter body in the proximal portion,

wherein the inflow orifice is located proximally from the fluid jet emanator;

an outflow orifice formed through a wall of the catheter body in the distal portion,

wherein the outflow orifice is located distally from the fluid jet emanator;

wherein the catheter body distal of the fluid jet emanator is free of an inflow orifice;

wherein the fluid jet emanator is attached to a distal portion of the tubular member;

wherein the fluid jet emanator includes a plurality of fluid jet openings, the plurality of openings include a first opening configured to direct fluid in a proximal direction and a second opening configured to direct fluid in a distal direction.

2. The catheter of claim 1, wherein the first opening and the second opening are configured to direct fluid simultaneously.

3. The catheter of claim 1 wherein the plurality of fluid jet openings includes a first set of fluid jet openings positioned on a proximal face of the emanator and a second set of fluid jet openings positioned on a distal face of the emanator.

4. The catheter of claim 3, wherein the first set of fluid jet openings are configured to direct a plurality of fluid jets proximally toward the inflow orifice and wherein the second set of fluid jet openings are configured to direct a plurality of fluid jets distally toward the outflow orifice.

5. The catheter of claim 4, wherein the distally directed jets are configured to exit the lumen of the catheter body through the outflow orifice and enter the lumen of the catheter body through the inflow orifice.

6. The catheter of claim 1, wherein the tubular member includes a high pressure tube.

7. The catheter of claim 1, wherein the tubular member is off-center within the catheter lumen.

8. The catheter of claim 1, wherein the tubular member is configured to connect to a fluid source.

9. A hydrodynamic catheter, comprising:

a catheter body including a proximal portion, a distal portion and a lumen extending therein;

an inflow orifice positioned in the sidewall of the proximal portion of the catheter body;

an outflow orifice positioned in the sidewall of the distal portion of the catheter body;

a high pressure tube positioned within a lumen of the catheter body; and

a fluid jet emanator positioned within the lumen of the catheter body, wherein the fluid jet emanator is positioned between the inflow orifice and the outflow orifice;

wherein the catheter body distal of the fluid jet emanator is free of an inflow orifice;

wherein the fluid jet emanator includes a first opening configured to direct fluid in a proximal direction and a second opening configured to direct fluid in a distal direction.

10. The catheter of claim 9, wherein the first opening and the second opening are configured to direct fluid simultaneously.

11. The catheter of claim 9, wherein the fluid jet emanator is attached to a distal portion of the high pressure tube.

12. The catheter of claim 9, wherein the fluid jet emanator includes a plurality of fluid jet openings, the plurality of fluid jet openings including a first set of fluid jet openings positioned on a proximal face of the emanator and a second set of fluid jet openings positioned on a distal face of the emanator.

13. The catheter of claim 12, wherein the first set of fluid jet openings are configured to direct a plurality of fluid jets proximally toward the inflow orifice and wherein the second set of fluid jet openings are configured to direct a plurality of fluid jets distally toward the outflow orifice.

14. The catheter of claim 13, wherein the distally directed jets are configured to exit the lumen of the catheter body through the outflow orifice and enter the lumen of the catheter body through the inflow orifice.

15. The catheter of claim 9, wherein the high pressure tube is off-center within the catheter lumen.

16. The catheter of claim 9, wherein the high pressure tube is configured to connect to a fluid source.

17. A hydrodynamic catheter, comprising:

a catheter body including a proximal portion, a distal portion and a lumen extending therein;

an inflow orifice positioned in the sidewall of the proximal portion of the catheter body;

an outflow orifice positioned in the sidewall of the distal portion of the catheter body;

a high pressure tube positioned within a lumen of the catheter body; and

a fluid jet emanator positioned within the lumen of the catheter body, wherein the fluid jet emanator is positioned between the inflow orifice and the outflow orifice;

wherein the catheter body distal of the fluid jet emanator is free of an inflow orifice;

wherein the fluid jet emanator includes a first set of proximally-directed fluid jet openings positioned on a proximal face of the fluid jet emanator;

wherein the fluid jet emanator includes a second set of distally-directed fluid jet openings positioned on a distal face of the fluid jet emanator;

wherein the fluid jet emanator is designed to distribute fluid through the proximally-directed openings and the distally-directed openings simultaneously.