Method of forming an intravascular radially expandable stent
First Claim
1. A method of forming a radially expandable stent for transluminal implantation comprising the steps offorming a continuous length of fine wire into a flat rectangular shaped ribbon containing alternately inverted oval shaped loops with each loop having an opening situated at one edge of the ribbon and an expanded base lying along an opposed edge of said ribbon;
- closing the opening of each loop;
winding the ribbon into a tight spiral sleeve with the edges of the ribbon being in close relation to each other and,performing said wire prior to forming into a sinusoidal shape having a series of waves, each half wave of the sinusoidal being triangular shaped and having a flat planar surface at its apex and an open base section.
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Accused Products
Abstract
An improved radially expandable stent formed from a fine wire bent into a serpentine flat ribbon which is wound around a mandrel into a cylindrical sleeve for mounting on a balloon catheter for transluminal insertion in a vessel such as a blood vessel is provided. A very small diameter fine platinum wire is used to form the basic cylindrical sleeve and it is welded to a pigtail of the wire forming the sleeve to provide longitudinal stablility.
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Citations
5 Claims
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1. A method of forming a radially expandable stent for transluminal implantation comprising the steps of
forming a continuous length of fine wire into a flat rectangular shaped ribbon containing alternately inverted oval shaped loops with each loop having an opening situated at one edge of the ribbon and an expanded base lying along an opposed edge of said ribbon; -
closing the opening of each loop; winding the ribbon into a tight spiral sleeve with the edges of the ribbon being in close relation to each other and, performing said wire prior to forming into a sinusoidal shape having a series of waves, each half wave of the sinusoidal being triangular shaped and having a flat planar surface at its apex and an open base section. - View Dependent Claims (2, 3, 4, 5)
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Specification
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- Resources
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Current AssigneeNumed LLC
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Original AssigneeNumed LLC
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InventorsTower, Allen J.
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Primary Examiner(s)Thaler, Michael H.
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Application NumberUS07/619,010Time in Patent Office713 DaysField of Search606/108, 606/198, 606/191, 623/1, 128/898US Class Current128/898CPC Class CodesA61F 2/88 the wire-like elements form...
