TREATMENT OF STENOTIC REGIONS

• US 20070233173A1
• Filed: 06/04/2007
• Published: 10/04/2007
• Est. Priority Date: 05/23/2003
• Status: Active Grant

• Current Assignee: Balbir Brar, Harvinder Sahota
• Original Assignee: Balbir Brar, Harvinder Sahota
• Inventors: Sahota, Harvinder, Brar, Balbir
• Granted Patent: US 7,468,052 B2
• Time in Patent Office: Days
• US Class Current: 606/194
• CPC Class Codes: A61B 17/12045 double occlusion, e.g. during anastomosis
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 17/2202 the ultrasound transducer being inside patient's body at the distal end of the catheter
• CPC Class Codes: A61B 17/320758 with a rotating cutting instrument, e.g. motor driven A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002
• CPC Class Codes: A61B 2017/1205 Introduction devices
• CPC Class Codes: A61B 2017/22001 Angioplasty, e.g. PCTA
• CPC Class Codes: A61B 2017/22051 with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation A61B2017/22048, A61B2017/3486 take precedence
• CPC Class Codes: A61B 2017/22054 with two balloons
• CPC Class Codes: A61B 2017/22061 for spreading elements apart
• CPC Class Codes: A61F 2/88 the wire-like elements formed as helical or spiral coils forming a net-like or mesh-like structure A61F2/90
• CPC Class Codes: A61F 2/885 comprising a coil including a plurality of spiral or helical sections with alternate directions around a central axis
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/9583 Means for holding the stent on the balloon, e.g. using protrusions, adhesives or an outer sleeve
• CPC Class Codes: A61F 2220/005 using adhesives
• CPC Class Codes: A61F 2220/0066 stapled
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: A61F 2250/0067 : Means for introducing or releasing pharmaceutical products into the body
• CPC Class Codes: A61M 2025/0096 : being laterally outward extensions or tools, e.g. hooks or fibres
• 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: Y10S 623/903 : Blood vessel
• CPC Class Codes: Y10S 623/921 : Blood vessel

Abstract

An improved method and devices for preventing restenosis are provided. The method may include delivering a stent configured to contain a stenosis to a body vessel. The method may also include using atherectomy at the site prior to stent delivery. In one embodiment, the stent has a proximal end, a distal end, and a center portion arranged such that the diameters of the proximal and distal ends are greater than the diameter of the center portion. In one embodiment, the atherectomy device includes a housing to prevent injury to the unaffected areas of the body vessels but the cutter is extendible beyond the housing. In one embodiment, the stent may be impregnated with at least one drug after stent deployment.

Claims

1. A method of mapping a vascular lesion comprising:

delivering a thin membrane balloon comprised of a radiopaque material to the vascular lesion; and

inflating the balloon such that the balloon conforms to a topography of the lesion for mapping the lesion.

2. The method of claim 1, further comprising taking an X-ray of the vascular lesion.

3. The method of claim 1, wherein inflating the balloon comprises inflating at a low pressure.

4. The method of claim 1, wherein the balloon is configured such that blood can flow past the balloon.

5. A lesion mapping catheter comprising:

an elongate tubular shaft having a proximal end and a distal end;

a thin membrane balloon comprised of a radiopaque material, the balloon positioned inside the tubular shaft;

wherein the balloon is configured such that when inflated inside a vascular lesion the membrane conforms to a topography of the vascular lesions.

6. The method of claim 5, wherein the balloon is configured to be inflated at a low pressure.

7. The method of claim 5, wherein the balloon is configured such that blood can flow past the balloon.