Angioplasty apparatus facilitating rapid exchanges

• US 6,585,657 B2
• Filed: 07/16/2001
• Issued: 07/01/2003
• Est. Priority Date: 04/15/1986
• Status: Expired due to Fees

• Current Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Yock, Paul G.
• Primary Examiner(s): Thaler, Michael H.
• Application Number:
  US09/906,912
• Publication Number:
  US 20010041905A1
• Time in Patent Office: 715 Days
• Field of Search: 600/466, 600/467, 600/468, 600/469, 600/470, 600/471, 606/194, 606/192, 604/130.04
• US Class Current: 600/467
• CPC Class Codes: A61B 18/245 for removing obstructions in blood vessels or calculi
• CPC Class Codes: A61M 2025/0034 characterized by elements which are assembled, connected or fused, e.g. splittable tubes, outer sheaths creating lumina or separate cores making of catheters A61M25/0009
• CPC Class Codes: A61M 2025/0183 Rapid exchange or monorail catheters
• CPC Class Codes: A61M 2025/1093 having particular tip characteristics
• CPC Class Codes: A61M 25/0021 characterised by the form of the tubing A61M25/0054 takes precedence
• CPC Class Codes: A61M 25/0029 characterized by features relating to least one lumen located at the middle part of the catheter, e.g. slots, flaps, valves, cuffs, apertures, notches, grooves or rapid exchange ports catheter shaft surface irregularities A61M2025/006
• CPC Class Codes: A61M 25/0032 characterized by at least one unconventionally shaped lumen, e.g. polygons, ellipsoids, wedges or shapes comprising concave and convex parts
• CPC Class Codes: A61M 25/0045 multi-layered, e.g. coated coating materials A61L29/08
• CPC Class Codes: A61M 25/0071 Multiple separate lumens multiple separate lumens throughout the catheter A61M25/0026
• CPC Class Codes: A61M 25/104 used for angioplasty

Abstract

The invention provides a nested tubing cannula which comprises outer and inner elongate tubular members, both having a proximal end, a distal end, and a lumen therebetween. The inner tubular member is sealed at its distal end and is nested substantially coaxially within the lumen of the outer tubular member, so that the gap between the inner and the outer tubular member defines a second lumen whereas the first lumen is the lumen of the inner tubular member. A tubular sleeve is disposed coaxially between the inner and outer tubular members. A balloon is mounted on a distal region of the outer tubular member and is in communication with the first lumen. The cannula further comprises a port proximal or distal the balloon occluder and is in communication with the second lumen. Methods for making the devices herein are disclosed.

Claims

1. A catheter assembly for performing intraluminal ultrasound procedures within a patient'"'"'s coronary artery, comprising:

a) a guiding catheter having proximal and distal ends which is adapted to be disposed within a patient'"'"'s cardiovascular system with the distal end seated within an ostium of the patient'"'"'s coronary artery and the proximal end extending out of the patient;

b) a guidewire with proximal and distal ends which is adapted to be disposed within the guiding catheter with the distal end of the guidewire extending out the distal end of the guiding catheter into the coronary artery of the patient and the proximal end of the guidewire extending out the proximal end of the guiding catheter which extends out of the patient; and

c) an elongated ultrasound imaging catheter having an elongated catheter body with a proximal end adapted to extend out of the patient, a distal end, a first elongated inner lumen within the catheter body extending from the proximal end to the distal end, and a second much shorter inner lumen which is fixed with respect to said catheter body and which is defined at least in part by a tubular member extending substantially within the catheter body which is adapted to slideably receive the guidewire, the second inner lumen having a distal port located in the distal end of the catheter body and a proximal port extending through the catheter body, the proximal port of the imaging catheter being located at least 10 centimeters from the distal end of the catheter body.

2. A catheter assembly for performing intraluminal ultrasound procedures within a patient'"'"'s cardiovascular system, comprising:

a) a guiding catheter having proximal and distal ends, the distal end adapted to seat within an ostium of an artery and the proximal end adapted to extend out of the patient;

b) a guidewire with proximal and distal ends slideably insertable in the guiding catheter, the distal end of the guidewire extending out the distal end of the guiding catheter and adapted to extend into the artery and the proximal end of the guidewire extending out the proximal end of the guiding catheter; and

c) an elongated ultrasound imaging catheter having an elongated catheter body with a proximal end, a distal end, a first elongated inner lumen within the catheter body extending from the proximal end to the distal end, and a second shorter inner lumen which is fixed with respect to said catheter body and which is defined at least in part by a tubular member extending substantially within the catheter body which is adapted to slideably receive the guidewire, the second inner lumen having a distal port located in the distal end of the catheter body and a proximal port extending through the catheter body, the proximal port of the imaging catheter being located at least 10 centimeters from the distal end of the catheter body.