Device for treating chronic total occlusion

• US 20070265563A1
• Filed: 05/11/2006
• Published: 11/15/2007
• Est. Priority Date: 05/11/2006
• Status: Abandoned Application

• Current Assignee: Richard Heuser
• Original Assignee: Richard Heuser
• Inventors: Heuser, Richard
• Application Number:
  US11/433,198
• Publication Number:
  US 20070265563A1
• Time in Patent Office: Days
• US Class Current: 604/96.10
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 18/201 with beam delivery through a hollow tube, e.g. forming an articulated arm through a flexible conduit A61B18/22; Hand-pieces therefor
• CPC Class Codes: A61B 2017/00261 Discectomy
• CPC Class Codes: A61B 2018/0041 Removal of thrombosis
• CPC Class Codes: A61M 2025/0089 Single injection needle protruding axially, i.e. along the longitudinal axis of the catheter, from the distal tip
• CPC Class Codes: A61M 2025/105 having a balloon suitable for drug delivery, e.g. by using holes for delivery, drug coating or membranes
• CPC Class Codes: A61M 2025/1052 for temporarily occluding a vessel for isolating a sector
• CPC Class Codes: A61M 2025/1063 having only one lumen used for guide wire and inflation, e.g. to minimise the diameter
• CPC Class Codes: A61M 2205/054 with electrotherapy
• CPC Class Codes: A61M 2210/12 Blood circulatory system
• CPC Class Codes: A61M 25/0067 characterised by the distal end, e.g. tips A61M25/0054, A61M25/04 take precedence; balloon catheters A61M25/10
• CPC Class Codes: A61M 25/007 Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
• CPC Class Codes: A61M 25/0084 being one or more injection needles
• 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
• CPC Class Codes: A61M 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body

Abstract

A catheterization system for treatment of a condition within a blood vessel is provided with a catheter, a balloon immediately adjacent to the distal end of the catheter, an inflation device for expanding the balloon, and a fluid injection device for injecting a treatment fluid through the central lumen of the catheter and out of the aperture at the distal end of the catheter into the treatment area. The system may include an RF wire, a hollow needle wire, a dissection tool, or a laser wire insertable through the central lumen of the catheter and selectively operable adjacent the proximal end of the catheter to apply treatment within the blood vessel.

Claims

1. A catheterization system for treatment of a condition within a blood vessel, the system comprising:

a catheter defining a proximal end, a distal end, a central lumen interconnecting the ends, and an aperture at the distal end, the catheter insertable into the blood vessel to a treatment area that is substantially distal of the distal end of the catheter;

a flexible membrane mounted on the catheter and disposed immediately adjacent to the aperture at the distal end of the catheter, the flexible membrane including a proximal end and an opposite distal end;

an inflation device selectively operable adjacent the proximal end of the catheter and coupled to the flexible membrane to be capable of expanding the membrane under pressure to substantially close off the blood vessel; and

a fluid injection device selectively operable adjacent the proximal end of the catheter to inject a treatment fluid through the central lumen of the catheter and out of the aperture at the distal end of the catheter into the treatment area.

2. The catheterization system of claim 1, further wherein the aperture at the distal end of the catheter is defined by a distal edge of the catheter, and further wherein the distal end of the flexible membrane is no more than about 2-mm from the distal edge of the catheter.

3. The catheterization system of claim 1, further wherein the aperture at the distal end of the catheter is defined by a distal edge of the catheter, and further wherein the distal end of the flexible membrane is no more than about 1-mm from the distal edge of the catheter.

4. The catheterization system of claim 1, further wherein the aperture at the distal end of the catheter is defined by a distal edge of the catheter, and further wherein the distal end of the flexible membrane is no more than about 0.5-mm from the distal edge of the catheter.

5. The catheterization system of claim 1 wherein the catheter defines an outer diameter, and further wherein the aperture at the distal end of the catheter is defined by a distal edge of the catheter, and further wherein the distal end of the flexible membrane is a distance from the distal edge of the catheter that is no more than about one half of the outer diameter of the catheter.

6. The catheterization system of claim 1, further comprising an RF wire insertable through the central lumen of the catheter and selectively operable adjacent the proximal end of the catheter to apply RF energy to the treatment area.

7. The catheterization system of claim 1, further comprising a hollow wire insertable through the central lumen of the catheter and selectively operable adjacent the proximal end of the catheter to apply a fluid to the treatment area.

8. The catheterization system of claim 7, wherein the hollow wire further includes a distal needle tip.

9. The catheterization system of claim 1, further comprising a wire including a dissection tool adjacent a distal end, the wire insertable through the central lumen of the catheter and selectively operable adjacent the proximal end of the catheter to dissect plaque in the treatment area.

10. The catheterization system of claim 1, further comprising a wire including a laser delivery device adjacent a distal end, the wire insertable through the central lumen of the catheter and selectively operable adjacent the proximal end of the catheter to apply laser energy to the treatment area.