Stent having a multiplicity of undulating longitudinals
First Claim
1. A post-deployment stent structure for maintaining patency of a vessel of a human body comprising:
- a multiplicity of closed, generally circular rings, the plane of each ring being generally parallel to the plane of each adjacent ring, the rings having a common longitudinal axis which is perpendicular to the plane of each ring and which longitudinal axis passes through the geometric center of each ring; and
a multiplicity of elongated wire structures forming longitudinals which longitudinals are fixedly attached to the rings so as to be generally parallel to the longitudinal axis of the rings.
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Accused Products
Abstract
A method for implanting a balloon expandable stent at a site within a passageway of a curved coronary article. The stent includes at least two longitudinally spaced apart circumferential rings. At least one longitudinally extending connector extends between adjacent rings. The connector has at least one turn back portion that can expand or contract in length while being passed through a curved passageway. The stent is disposed on a stent delivery catheter having an inflatable balloon. The stent delivery catheter and the stent is delivered through the passageway to the site of implementation with the connector member expanding or contracting in length to facilitate delivery and placement of the stent. The stent is expanded at the site of implantation by inflating the balloon to force the stent radially outward against the wall of the coronary artery.
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Citations
20 Claims
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1. A post-deployment stent structure for maintaining patency of a vessel of a human body comprising:
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a multiplicity of closed, generally circular rings, the plane of each ring being generally parallel to the plane of each adjacent ring, the rings having a common longitudinal axis which is perpendicular to the plane of each ring and which longitudinal axis passes through the geometric center of each ring; and
a multiplicity of elongated wire structures forming longitudinals which longitudinals are fixedly attached to the rings so as to be generally parallel to the longitudinal axis of the rings. - View Dependent Claims (7, 8, 9, 10, 11, 12, 14)
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- 2. The stent of claim 2 wherein the rings have a multiplicity of cutouts for the placement therethrough of the longitudinals.
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13. An initial structure that is capable of being formed into a pre-deployment stent structure which in turn is capable of being deployed into a post-deployment stent structure for placement within a vessel of the human body, the initial structure comprising:
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a multiplicity of flat ovals, the plane of each oval being generally parallel to the plane of all other ovals, the ovals having a common longitudinal axis which is perpendicular to the plane of each oval and which longitudinal axis passes through the geometric center of the ovals; and
a multiplicity of longitudinals which are fixedly attached to the ovals, the longitudinals being positioned onto the ovals so as to be generally parallel to the longitudinal axis of the ovals.
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15. A generally cylindrical pre-deployment stent structure which is capable of being deployed into a post-deployment stent structure for placement within a vessel of the human body, the pre-deployment structure being formed from an initial structure which consists of a multiplicity of flat ovals, the plane of each oval being generally parallel to the plane of all other ovals, the ovals also having a minor axis and a major axis and a minor axis dimension and a major axis dimension;
- the ovals having a common longitudinal axis which is perpendicular to the plane of each oval and which longitudinal axis passes through the geometric center of the ovals; and
a multiplicity of longitudinals which are fixedly attached to the ovals, the longitudinals being positioned onto the ovals so as to be generally parallel to the longitudinal axis of the ovals;
the pre-deployment stent structure being formed by folding the ovals around a distal portion of a stent delivery catheter, the pre-deployment stent structure being adapted to form a post-deployment stent structure having a multiplicity of generally circular rings that are formed from the ovals, the circular rings being joined together by the longitudinals. - View Dependent Claims (16, 17, 18, 19, 20)
- the ovals having a common longitudinal axis which is perpendicular to the plane of each oval and which longitudinal axis passes through the geometric center of the ovals; and
Specification