Method and apparatus for treating critical limb ischemia

• US 20180071120A1
• Filed: 09/11/2017
• Published: 03/15/2018
• Est. Priority Date: 09/09/2016
• Status: Active Grant

• Current Assignee: Micro Medical Solutions, Inc.
• Original Assignee: Micro Medical Solutions, Inc.
• Inventors: Sullivan, Gregory
• Granted Patent: US 11,547,583 B2
• Time in Patent Office: Days
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2230/0069 cylindrical
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers

Abstract

A system and method for treating critical limb ischemia (CLI) including a radiopaque micro stent disposed for cross ankle stenting as well as retrograde pedal/tibial artery access, in conjunction with antegrade access for the recanalization of impaired tibial vessels. A radiopaque medical device is constructed from a tubular-shaped body having a thin wall defining a specific strut pattern. In an additional aspect, the present apparatus introduces a new radiopaque medical device, such as a stent, wherein the tubular body includes a super elastic, nickel-titanium (nitinol) alloy.

Claims

1. A method of treating critical limb ischemia (CLI) comprising the steps of:

utilizing a radiopaque micro stent;

utilizing below-the-knee revascularization method by entering the body of the patient in a region below the knee;

entering the body through a pedal access point;

utilizing an ultrasound machine in conjunction with the radiopaque micro stent for guidance and delivery of the radiopaque micro stent;

proceeding retrograde through a tibial artery to deliver the radiopaque micro stent;

delivering and seating the stent via an image from the ultrasound machine; and

unblocking tibial artery occlusions.

2. The method of treating critical limb ischemia (CLI) of claim 1 further comprising the steps of:

reutilizing the pedal access point;

proceeding antegrade around the ankle to reach legions and occlusions on the opposing side of the pedal access point; and

,

utilizing a continuous medical X-ray image for positioning and guidance.

3. A micro stent comprising:

a Nitinol and Platinum composite comprising 90 percent Nitinol and 10 percent Platinum; and

,

a structure comprising forty eight strands.