Stent Delivery and Deployment System

• US 20090198317A1
• Filed: 02/02/2009
• Published: 08/06/2009
• Est. Priority Date: 10/10/2002
• Status: Active Grant

• Current Assignee: Sam Ciamacco Jr
• Original Assignee: Sam Ciamacco Jr
• Inventors: Ciamacco, Sam JR.
• Granted Patent: US 8,936,632 B2
• Time in Patent Office: Days
• US Class Current: 623/1.11
• CPC Class Codes: A61F 2/844 folded prior to deployment
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/86 Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/826 more than one stent being applied sequentially
• CPC Class Codes: A61M 2025/0183 Rapid exchange or monorail catheters

Abstract

A stent delivery and deployment system for placement of vascular stents having apertures therein for deployment at intersecting blood vessels. The device employs a guide wire having an angled distal end which is threaded into position at the intersection of a first blood vessel and second blood vessel. With the angled portion of the guide wire threaded into the intersecting blood vessel, the stent may be translated along the guide wire to easily position the aperture in line with the intersecting blood vessel.

Claims

1. A method of placing a stent into a blood vessel of a patient, said stent having a passage formed axially on a sidewall, said sidewall defining the interior of said stent, said passage sized for slidable engagement on a guide wire therethrough, said guide wire having a distal end and a proximal end, comprising the steps of:

inserting a guide wire into a blood vessel of a patient and translating said guide wire such that said distal end of said guide wire is placed in a determined position in the circulatory system of said patient and said proximal end of said guide wire extends from said patient;

engaging said passage onto said distal end of said wire;

sliding said stent with said passage engaged on said guide wire, to a positioning point at said distal end of said guide wire;

employing a means of expanding said stent to seat it into permanent engagement with said blood vessel at said positioning point; and

repeating said steps if necessary before removing said guide wire from said patient.

2. A method of placing multiple stents into a blood vessel of a patient, said stents having a passage formed axially on a sidewall, said sidewall defining the interior of said stent, said passage sized for slidable engagement on a guide wire therethrough, the ends of said stents engageable with the ends of any adjacent stents to form a gapless engagement, said guide wire having a distal end and a proximal end, comprising the steps of:

inserting a guide wire into a blood vessel of a patient and translating said guide wire such that said distal end of said guide wire is placed in a determined position in the circulatory system of said patient and said proximal end of said guide wire extends from said patient;

engaging said passage onto said distal end of said wire;

sliding said stent with said passage engaged on said guide wire, to a positioning point at said distal end of said guide wire;

repeating said steps to place one or a plurality of stents adjacent to each other with their ends engaged;

employing a means of expanding all of said stents with their respective ends engaged at once, to thereby seat them into permanent engagement with said blood vessel at said positioning point; and

removing said guide wire from said patient.

3. An improved stent for implanting in a blood vessel comprising:

an elongated stent, said sent having a first end and a second end, said stent having a sidewall defining a central cavity communicating between said first end and said second end;

said central cavity having a center axis therethrough;

a passageway formed axially along said sidewall, said passageway having a diameter therethrough sized to accommodate lateral translation upon a guide wire engaged therein and communicating through a blood vessel;

means to laterally translate said stent with said guide wire engaged through said passageway, to a determined position in a blood vessel of a patient;

an aperture communicating through said sidewall adjacent to a termination point of said passageway between said first end and said second end;

said guide wire having an angled portion at a distal end extending at an angle from an axis of said guide wire at an intersecting point on said guidewire;

said angle of said angled portion formed to extend away from and align with, said aperture, when said intersecting point of said guide wire is positioned adjacent to said termination point; and

said angled portion, engaged within an intersecting blood vessel, thereby providing visual means to align said aperture with said intersecting blood vessel, whereby said guide wire may be threaded into the blood vessel of a patient with said angled portion engaged in said intersecting blood vessel, and said stent can be slid to said determined position with said aperture aligned with said intersecting blood vessel by said angled portion.

4. An improved stent for implanting in a blood vessel wherein said means to align said aperture with said intersecting blood vessel additionally comprises:

a pair of radiopaque markers positioned on said stent with said aperture centered therebetween.

5. An improved stent for implanting in a blood vessel wherein said means to align said aperture with said intersecting blood vessel additionally comprises:

said means to translate said stent along said guide wire being a balloon catheter; and

a distal end of said balloon catheter having a fixed wire extending axially therefrom.