Method for opening a lumen in an occluded blood vessel

• US 7,367,982 B2
• Filed: 11/01/2004
• Issued: 05/06/2008
• Est. Priority Date: 07/26/1996
• Status: Expired due to Fees

• Current Assignee: Kensey Nash Corporation (DSM-Firmenich AG)
• Original Assignee: Kensey Nash Corporation (DSM-Firmenich AG)
• Inventors: Dodson, Charles W. Jr., Nash, John E., Fisher, William T.
• Primary Examiner(s): TRUONG, KEVIN THAO
• Application Number:
  US10/978,984
• Publication Number:
  US 20050096723A1
• Time in Patent Office: 1,282 Days
• Field of Search: 606/159, 606/192, 606/194, 606/198, 604/22, 604 9601-10105, 604/164.01, 623/1.11
• US Class Current: 606/159
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• CPC Class Codes: A61B 17/3203 Fluid jet cutting instruments
• CPC Class Codes: A61B 17/32037 for removing obstructions from inner organs or blood vessels, e.g. for atherectomy
• 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 2017/22048 Balloons
• CPC Class Codes: A61B 2017/22067 Blocking; Occlusion A61B2017/22054 takes precedence
• CPC Class Codes: A61B 2017/320775 Morcellators, impeller or propeller like means
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 2217/007 with irrigation system
• CPC Class Codes: A61M 1/77 Suction-irrigation systems aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463
• CPC Class Codes: A61M 1/85 with gas or fluid supply means, e.g. for supplying rinsing fluids or anticoagulants for negative pressure wound therapy A61M1/92, A61M1/94; combined with tracheal tubes A61M16/0463; dental instruments with combined rinsing and aspirating A61C17/0208
• CPC Class Codes: A61M 2025/1095 with perfusion means for enabling blood circulation while the balloon is in an inflated state or in a deflated state, e.g. permanent by-pass within catheter shaft
• CPC Class Codes: A61M 2205/05 combined with other kinds of therapy
• CPC Class Codes: A61M 5/14232 Roller pumps

Abstract

A method for opening a lumen in an occluded blood vessel, e.g., a coronary bypass graft, of a living being. The method entails using an instrument to deploy the stent at occlusive material within the blood vessel to open the lumen, whereupon some debris may be produced. Operating a debris extraction system for removing debris during deployment of the stent.

Claims

1. A method for opening a lumen in an occluded blood vessel portion of a living being'"'"'s vascular system, the occluded blood vessel portion being occluded by an occlusive material, said method comprising:

A. providing a stent, an instrument for deploying said stent and a debris extraction system,

B. extending said instrument into the being'"'"'s vascular system to deploy said stent to the occlusive material in the interior of the occluded blood vessel portion to open a lumen therein for the flow of blood therethrough, whereupon some debris may be produced, and

C. operating said debris extraction system to introduce an infusate liquid at a first flow rate adjacent the occlusive material and to withdraw said liquid at a second and higher flow rate to create a differential flow adjacent the occlusive material, whereupon the debris is withdrawn by said differential flow from the occluded vessel portion during the deployment of said stent.

2. The method of claim 1 additionally comprising:

D. providing a catheter into the vascular system of the being through which said instrument extends to form a passageway between said catheter and said instrument, and

E. withdrawing the debris through said passageway for collection remote from the occluded blood vessel.

3. The method of claim 2 additionally comprising:

F. providing a blocking member for preventing the debris from flowing into an upstream blood vessel.

4. The method of claim 1 wherein said first and second flow rates are adjustable.